[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN113266759A - Ethylene combined storage system and method - Google Patents

Ethylene combined storage system and method Download PDF

Info

Publication number
CN113266759A
CN113266759A CN202110509694.1A CN202110509694A CN113266759A CN 113266759 A CN113266759 A CN 113266759A CN 202110509694 A CN202110509694 A CN 202110509694A CN 113266759 A CN113266759 A CN 113266759A
Authority
CN
China
Prior art keywords
ethylene
temperature
low
storage tank
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110509694.1A
Other languages
Chinese (zh)
Other versions
CN113266759B (en
Inventor
张春方
李积杰
张晓东
胡中杰
童国宇
蔡荣飞
方其
屠长明
邵先胜
孟晋乐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Air Separation Engineering Co ltd
Original Assignee
China National Air Separation Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Air Separation Engineering Co ltd filed Critical China National Air Separation Engineering Co ltd
Priority to CN202110509694.1A priority Critical patent/CN113266759B/en
Publication of CN113266759A publication Critical patent/CN113266759A/en
Application granted granted Critical
Publication of CN113266759B publication Critical patent/CN113266759B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/14—Conveying liquids or viscous products by pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • F17C2227/0164—Compressors with specified compressor type, e.g. piston or impulsive type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0348—Water cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0353—Heat exchange with the fluid by cooling using another fluid using cryocooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/039—Localisation of heat exchange separate on the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0631—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention provides an ethylene combined storage system and an ethylene combined storage method. An ethylene combined storage system comprises a low-temperature ethylene storage tank, a reliquefaction recovery system, an ethylene spherical tank, a cascade refrigerator system, a pressurization system, a reheater and an external delivery pump; liquid at the temperature of minus 104 ℃ to minus 101 ℃ in the low-temperature ethylene storage tank is pressurized by the pressurization system and reheated by the reheater and then sent to an ethylene spherical tank or output; and the liquid in the ethylene spherical tank is conveyed to a cascade refrigerator through an outward conveying pump to be cooled to-75 to-60 ℃, the throttling is performed by 0.2 to 0.5barg, then the liquid is poured into a low-temperature ethylene storage tank, and the gas generated by throttling is recovered by the reliquefaction recovery system. The system adopts a supercooling process of a cascade refrigerator system for intercooling ethylene, reduces the number of low-temperature compressor units, simultaneously reduces energy consumption, can change the state of a storage medium at any time, realizes the mutual falling of low-pressure ethylene and ethylene at-102 ℃ and-29 ℃ and-18 barg, and has flexible operation and high market adaptability.

Description

Ethylene combined storage system and method
Technical Field
The invention relates to the field of low-temperature ethylene, in particular to low-temperature ethylene storage and transportation.
Background
Ethylene is one of the most basic raw materials in petrochemical industry as a raw material for many synthetic materials. As a large industrial country, the demand for ethylene is continuously increasing in China; the method mainly comprises two modes, wherein one mode is an atmospheric low-temperature storage tank close to the saturation temperature of the ethylene at the atmospheric pressure, the mode adopts a large atmospheric storage tank for storage, the ethylene raw material is mainly purchased abroad under the working condition, and then the ethylene raw material is transported to the interior by a low-temperature ship and then discharged into the low-temperature storage tank, or the ethylene produced by a domestic ethylene device is purchased and transported to a factory by a tanker and then introduced into the low-temperature storage tank by a tanker. The other mode is pressurized storage, and ethylene produced by the device is directly sent to a spherical tank of 18barg for storage; however, due to the limitation of the volume of the spherical tanks, when the device is large, the number of the spherical tanks needs to be built at the same time, and the occupied area is increased.
At present, a newly-built chemical device is mostly provided with a low-temperature storage tank and a spherical tank at the same time and is used for storing products with different specifications. However, most of them are single-direction conversion aimed at reheating or gasifying low-temperature ethylene, and when the price of market materials is greatly changed, the market adaptability is poor. And most of medium-pressure ethylene adopts a direct throttling and depressurization method to pour materials into the normal-pressure storage tank, so that the low-temperature compressor unit has more configurations, high energy consumption and large investment.
Disclosure of Invention
The invention aims to provide an ethylene combined storage system, which not only can realize the conversion from low-temperature ethylene to intercooled ethylene and normal-temperature ethylene, but also can supercool the intercooled ethylene in a spherical tank and then pour the intercooled ethylene to a low-temperature ethylene storage tank, and simultaneously simplifies the flow, and reduces the energy consumption and the investment cost of the system.
In order to achieve the purpose, the invention adopts the technical scheme that:
an ethylene combined storage system comprises a low-temperature ethylene storage tank (-104 ℃ to-101 ℃), a reliquefaction recovery system, an ethylene spherical tank (-35 ℃ to-29 ℃), a cascade refrigerator system, a pressurization system, a reheater and an external delivery pump.
The low-temperature ethylene storage tank has the working pressure of 5-20 kpa g and the working temperature of-104 ℃ to-101 ℃, is a vertical low-temperature normal-pressure storage tank, and is provided with a gas phase outlet connected with an inlet of the reliquefaction and recovery system and a control valve on a pipeline; the liquid inlet pipeline is connected with the outlet of the cascade freezer; the liquid outlet pipeline is connected with the pressurization system.
The integrated storage system for ethylene, wherein the reliquefaction recovery system:
the system comprises a low-temperature compressor unit, a refrigerating unit and a condensate receiving tank, and is mainly used for reliquefying and recycling the evaporated gas. The entry of low temperature compressor unit with low temperature ordinary pressure storage tank links to each other, compresses the vapor pressure of storage tank to 16 ~ 18barg, and the gas after the compression is equipped with two passageways:
the first channel is connected with the refrigerating unit, normal-temperature ethylene gas is condensed into liquid at the temperature of between 41 ℃ below zero and 38 ℃ below zero after passing through the refrigerating unit, and the liquid enters the condensate receiving tank for pressure stabilization;
the second channel is connected with a condensation evaporator arranged in the low-temperature circulation of the cascade refrigeration system, normal-temperature ethylene gas is condensed into liquid at minus 45 ℃ to minus 40 ℃ after heat exchange, and the liquid is throttled and cooled by a throttle valve and finally enters the low-temperature ethylene storage tank for storage.
Furthermore, the liquefied evaporation gas after passing through the reliquefaction recovery system is also provided with two channels, wherein the third channel is connected with the low-temperature ethylene storage tank, and the liquefied flash evaporation gas at about-41 to-38 ℃ is throttled by a throttle valve and then returns to the low-temperature ethylene storage tank for storage; the fourth channel is connected with the cascade refrigerator, liquefied flash steam at the temperature of between 41 ℃ below zero and 38 ℃ below zero can be further supercooled to between 75 ℃ below zero and 60 ℃ below zero, and then is throttled to between 0.2 and 0.5barg by a tank top throttle valve to enter the low-temperature ethylene storage tank, and the channel is particularly suitable for the driving working condition.
Furthermore, the evaporation gas (18-19 barg) of the ethylene spherical tank can also be sent to the refrigerating unit for supercooling through a pipeline, and the condensate receiving tank is sent to the low-temperature ethylene storage tank for storage after pressure stabilization.
The integrated storage system for ethylene, wherein the cascade chiller system:
the high-temperature cycle refrigerant is evaporated to condense the refrigerant in the low-temperature cycle, and the low-temperature cycle refrigerant is evaporated to condense the cooled medium. The high-temperature circulating evaporation temperature is-45 to-40 ℃, the refrigerant can be propylene, propane or Freon, the low-temperature circulating evaporation temperature is-79 to-75 ℃, the refrigerant is ethylene and ethane, the low-temperature circulating evaporation is connected with a heat-exchanged medium through a condensation evaporator, the temperature of the cooled liquid-phase ethylene can be supercooled from-35 to-29 ℃ to-75 to-60 ℃, and the temperature of the cooled gas-phase ethylene is heat exchanged from 35 to 40 ℃ and reaches-45 to-40 ℃;
the condensing evaporator of the cascade refrigerator system is a shell-and-tube or kettle-type heat exchanger, the high-temperature cycle is made of low-temperature steel or stainless steel, the low-temperature cycle is made of stainless steel, the refrigerant passes through the shell pass, and the heat-exchanged medium passes through the tube pass; the phase state of the refrigerant in the condensation evaporator is changed from liquid phase to gas phase, so that cold energy is provided for the high-temperature circulating refrigerant and the cooled medium;
and a throttling valve is arranged on a pipeline between the cascade refrigerator system and the low-temperature ethylene storage tank, the ethylene is throttled and flashed, the throttled liquid is stored in the low-temperature ethylene storage tank, and the flashed gas is treated by the reliquefaction recovery system.
Furthermore, the cascade refrigerator system is controlled by a PLC, the starting sequence is that high-temperature circulation is started firstly, low-temperature circulation is started after the high-temperature circulation runs stably, and the reverse is true when the cascade refrigerator system is stopped.
The ethylene combined storage system is composed of an in-tank immersed pump or an in-tank immersed pump and an out-tank booster pump, and is used for boosting normal-pressure liquid in the low-temperature ethylene storage tank to 6-23 barg and sending the normal-pressure liquid to the reheater or directly outputting the normal-pressure liquid.
The combined storage system for ethylene comprises a reheater, a pressurizing system, a methanol or ethanol condenser, a gas-liquid separator and a gas-liquid separator.
The ethylene combined storage system is characterized in that a pipeline between the outlet of the reheater and the ethylene spherical tank is provided with temperature, pressure and flow monitoring, and the monitoring numerical value is interlocked with heat source steam.
The ethylene combined storage system is characterized in that the working pressure of the ethylene spherical tank is 17-19 barg, the working temperature is-35 to-29 ℃, a gas phase outlet of the ethylene spherical tank is connected with the reliquefaction and recovery system, and a liquid phase outlet pipeline of the ethylene spherical tank is provided with an external delivery pump which can deliver ethylene in the spherical tank to the cascade refrigerator system or external delivery.
The ethylene combined storage system is characterized in that the output pump is a vertical multi-stage barrel belt type centrifugal pump.
There is also provided a combined storage process for ethylene, using the system as described above, comprising: 1) pouring the ethylene from the low-temperature ethylene storage tank to the ethylene spherical tank, wherein the liquid in the low-temperature ethylene storage tank is sequentially pressurized by a pressurization system, reheated by a reheater and poured into the ethylene spherical tank by a pipeline; 2) and pouring the materials from the ethylene spherical tank to the low-temperature ethylene storage tank, wherein the liquid in the ethylene spherical tank is pressurized by an external delivery pump, subcooled by a cascade refrigerator system, throttled and flashed, and then the materials are poured into the low-temperature ethylene storage tank.
According to the technical scheme, the compressor unit is simple in configuration, the cascade refrigerator system can be used as a standby machine of the refrigerator unit in the reliquefaction recovery system, the evaporated gas of the ethylene spherical tank is recovered through the reliquefaction recovery system configured by the low-temperature ethylene storage tank, the liquid in the normal-pressure storage tank can be poured into the ethylene spherical tank, the ethylene spherical tank can also be discharged into the normal-pressure storage tank, and compared with the conventional throttling, cooling and pouring scheme, the low-temperature compressor is less in configuration, low in energy consumption and low in investment; the device is started and stopped immediately, is convenient and simple to operate and can be operated independently.
Drawings
FIG. 1 is a schematic diagram of the structure of an ethylene combined storage system according to the present invention.
FIG. 2 is a schematic diagram of a cascade chiller system in an ethylene combined storage system according to the present invention
Reference description 1-low temperature ethylene storage tank; 2-reliquefaction recovery system; 3-a reheater; 4-ethylene spherical tank 5-external transportation pump; 6-cascade freezer system; 7-a pressurization system; 8-high temperature recycle compressor; 9-a low temperature recycle compressor; 10-high temperature circulating water cooler; 11-high temperature circulation throttle valve; 12-high temperature condensing evaporator; 13-low temperature circulation throttle valve; 14-a cryocondensation evaporator; 15-a control valve; 16-a throttle valve; 17-a low temperature compressor train; 18-a freezer unit; 19-condensate receiving tank.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to the attached drawing 1, the ethylene combined storage system of the embodiment of the invention comprises a low-temperature ethylene storage tank 1, a reliquefaction recovery system 2, a reheater 3, an ethylene spherical tank 4, an output pump 5, a cascade refrigerator system 6 and a pressurization system 7; 8. a high temperature recycle compressor; 9. a low temperature cycle compressor; 10. a high temperature circulating water cooler; 11. a high temperature circulating throttle valve; 12. a high temperature condensing evaporator; 13. a low temperature circulation throttle valve; 14. a low temperature condensing evaporator; 15. a control valve; 16. a throttle valve; 17. a low temperature compressor unit; 18. a refrigerating unit; 19. a condensate receiving tank.
A gas phase outlet of the low-temperature ethylene storage tank 1 is connected with an inlet of the reliquefaction recovery system 2, and an outlet of the reliquefaction recovery system 2 is connected with the low-temperature ethylene storage tank 1; the reliquefaction recovery system consists of a low-temperature compressor unit 17, a refrigerating unit 18 and a condensate receiving tank; the inlet of the pressurization system 7 is connected with the liquid phase outlet of the low-temperature ethylene storage tank 1, the outlet of the pressurization system 7 is connected with the ethylene spherical tank 4, the inlet of the cascade refrigerator system 6 is connected with the outlet of the output pump 5 and the outlet of the low-temperature compressor unit 17, and the outlet of the cascade refrigerator system 6 is connected with the low-temperature ethylene storage tank 1.
The using process of the invention is as follows:
pouring materials from the low-temperature ethylene storage tank to an ethylene spherical tank: starting an immersed pump or an external centrifugal pump of a pressurization system 7 under the condition that the liquid level of a storage tank is higher than the installation height requirement of the pump, pressurizing liquid (-104 ℃ to-101 ℃ and 5-20 kpa) sent out from a low-temperature ethylene storage tank 1 to 20-23 barg through the pressurization system 7, sending the liquid to a reheater 3 through a pipeline, reheating the liquid to-40 ℃ to-35 ℃, and then conveying the liquid to an ethylene spherical tank 4(-35 ℃ to-29 ℃ and 17-19 barg) through the pipeline for storage.
Pouring materials from the ethylene spherical tank to the low-temperature ethylene storage tank: starting an output pump 5 and a cascade refrigerator system 6, wherein a refrigerant of a high-temperature circulating system of the cascade refrigerator system is propylene, propane or Freon, the propylene, propane or Freon is sequentially compressed to 14-17 barg by a high-temperature circulating compressor 8, cooled to 35-40 ℃ by a high-temperature circulating water cooler 10, throttled and cooled to 0.1-0.2 barg by a high-temperature circulating throttle valve 11, and is-45-minus 40 ℃, cold energy is provided for low-temperature circulation in a high-temperature condensation evaporator to be evaporated into gas, and the evaporated high-temperature circulating refrigerant enters the high-temperature circulating compressor 8 again to be sequentially circulated; the low-temperature circulating refrigerant absorbing the cold energy of the high-temperature circulation in the high-temperature condensation evaporator is cooled into low-temperature liquid at the temperature of minus 40 to minus 35 ℃, the temperature is further reduced to minus 79 to minus 75 ℃ through the low-temperature circulating throttle valve 13, the heat of the heat-exchanged medium is continuously absorbed in the low-temperature condensation evaporator and evaporated into gas phase, and then the gas phase enters the low-temperature circulating compressor for compression and is sequentially circulated. The phase state of the refrigerant in the condensation evaporator is changed from liquid phase to gas phase, so that cold energy is provided for the high-temperature circulating refrigerant and the cooled medium; the liquid (35 ℃ below zero to 29 ℃ below zero and 17 to 19barg) sent out from the ethylene spherical tank 4 is pressurized to 20 to 23barg by an output pump 5 and then sent to a low-temperature condensation evaporator arranged in a cascade refrigerator system 6, in the low-temperature condensation evaporator, the ethylene exchanges heat with a refrigerant at a low-temperature section thereof, is subcooled to 75 ℃ below zero to 60 ℃ below zero, and is throttled to 0.2 to 0.5barg and then enters a low-temperature ethylene storage tank 1.
The evaporation gas treatment of the system: and (3) opening a control valve 15 on the reliquefaction recovery system, enabling 5-20 kpa g-90 to-80 ℃ low-temperature gas in the low-temperature ethylene storage tank to enter a low-temperature compressor unit 17 configured in the reliquefaction recovery system 2, enabling the low-temperature gas to be compressed and cooled to 16-18 barg and 35-40 ℃ by a compressor, enabling two channels to be selectable, enabling the first channel to exchange heat with the refrigerating unit 18, enabling the evaporated gas to be cooled to-41 to-38 ℃ and become low-temperature liquid, enabling the low-temperature liquid to enter a condensate receiving tank 19, flashing, not condensing and then returning to the low-temperature ethylene storage tank 1 through a third channel. The second channel enters a low-temperature condensation evaporator 14 arranged in the cascade refrigerator system 6, exchanges heat with the low-temperature circulating refrigerant, liquefies into liquid at minus 45 ℃ to minus 40 ℃, and then returns to the low-temperature ethylene storage tank 1.
Furthermore, the evaporated gas liquefied by the reliquefaction recovery system can be connected with the cascade refrigerator through a fourth channel, the liquefied flash evaporated gas at the temperature of between-41 and-38 ℃ can be further subcooled to between-75 and-60 ℃, and then is throttled to between 0.2 and 0.5barg by a low-temperature ethylene tank top throttle valve 16 to enter the low-temperature ethylene storage tank, and the channel is particularly suitable for the driving working condition, can reduce the system discharge and save resources.
Furthermore, the evaporated gas from the ethylene spherical tank 4 at a temperature of 18-19 barg and-29 ℃ can enter a refrigerating unit 18 configured in the reliquefaction recovery system 2 or a low-temperature condensation evaporator 14 configured in the cascade refrigerating system 6, is changed into liquid at a temperature of-41-38 ℃ after exchanging heat with the refrigerant, and is returned to the low-temperature ethylene storage tank 1 after further throttling and cooling.
The invention has the advantages that:
the system can realize the arbitrary conversion of two storage states of the medium, has high market adaptability,
the process reduces the number of equipment units, simplifies the operation and reduces the maintenance cost while realizing mutual inversion of two media.
The system has low energy consumption, and through calculation, when the low-temperature ethylene storage tank is used for realizing the low-temperature ethylene storage tank by using 1 ton of liquid in the ethylene spherical tank through a throttling method, the energy consumption is 128KW, and when the system and the method are adopted, the energy consumption is 100 KW.
By adopting the system, the amount of the evaporated gas is greatly reduced during the tank dumping, and the treatment capacity and the number of the low-temperature compressors in the reliquefaction recovery system are reduced. Compared with the prior art, the price of only one low-temperature compressor exceeds 1200 RMB, the price of the overlapping refrigerating machine system does not exceed 1000 ten thousand, and the low-temperature compressor unit is added and a matched refrigerating machine unit is also added, so the equipment investment is greatly reduced.
The cascade freezer system can be used as a backup for a freezer unit in a reliquefaction recovery system. When the liquid in the spherical tank is not required to be poured into the normal-pressure storage tank, the compressed evaporation gas can be sent to the cascade refrigerating machine for cooling and liquefaction, and the overhaul time is provided for the refrigerating unit.
The cascade refrigerator system can further liquefy the liquid in the reliquefaction recovery system and supercool the liquid, so that the evaporation capacity of throttling flash evaporation can be reduced, the discharge is reduced, the energy is saved, and the cascade refrigerator system is particularly suitable for the driving working condition.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the scope of the invention as defined in the claims.

Claims (15)

1. An ethylene combined storage system, comprising: comprises a low-temperature ethylene storage tank, a reliquefaction recovery system, an ethylene spherical tank, a cascade refrigerator system, a pressurization system, a reheater and an external delivery pump; the gas phase outlet of the low-temperature ethylene storage tank is connected with the inlet of the reliquefaction recovery system, and the outlet of the reliquefaction recovery system is connected with the low-temperature ethylene storage tank; the inlet of the pressurization system is connected with a liquid phase outlet of the low-temperature ethylene storage tank, the outlet of the pressurization system is connected with the ethylene spherical tank, the inlet of the cascade refrigerator system is connected with an outlet of the external transfer pump and an outlet of the low-temperature compressor unit of the reliquefaction recovery system, and the outlet of the cascade refrigerator system is connected with the low-temperature ethylene storage tank.
2. The system of claim 1, wherein the low-temperature ethylene storage tank has a working pressure of 5-20 kpa g, and a gas outlet of the low-temperature ethylene storage tank is provided with a control valve interlocked with the pressure of the storage tank.
3. The ethylene combined storage system according to claim 1, wherein the reliquefaction and recovery system comprises a low-temperature compressor unit, a refrigerating unit and a condensate receiving tank, an inlet of the low-temperature compressor unit is connected with a gas phase outlet of the low-temperature ethylene storage tank through a pipeline, and the compressed gas is provided with two channels: wherein the first passage is connected with the refrigerating unit inlet of the reliquefaction recovery system, and the second passage is connected with the overlapping refrigerating unit inlet.
4. The combined ethylene storage system of claim 1, wherein the outlet of said reliquefaction recovery system is provided with two passages, wherein the third passage is connected to said cryogenic ethylene storage tank for returning the liquefied boil-off gas to the storage tank for storage, and the fourth passage is connected to said cascade chiller system for further subcooling the liquefied boil-off gas.
5. An ethylene combined storage system as claimed in claim 1, wherein said cascade refrigerator system is composed of a high temperature cycle and a low temperature cycle, refrigerant with different properties is filled in each individual refrigeration system, the two parts are connected through a condensing evaporator, refrigerant in the high temperature cycle is evaporated to condense refrigerant in the low temperature cycle, refrigerant in the low temperature cycle is evaporated to condense cooled medium ethylene, refrigerant in the high temperature cycle is propylene, propane or freon, and refrigerant in the low temperature cycle is ethylene.
6. The system of claim 1, wherein a throttling valve is disposed in a conduit between the cascade chiller system and the cryogenic ethylene storage tank to throttle the ethylene for flash evaporation, the throttled liquid is stored in the cryogenic ethylene storage tank, and the flash vapor is processed by the reliquefaction recovery system.
7. The ethylene combined storage system according to claim 1, wherein the pressurization system is composed of an in-tank immersed pump or an in-tank immersed pump and an out-tank pressurization pump, and is used for pressurizing the liquid in the low-temperature ethylene storage tank to the reheater or directly transporting the liquid out.
8. The system of claim 1, wherein the recuperator is an indirect heater, and the methanol or ethanol is heated by steam, and the heated methanol or ethanol exchanges heat with the ethylene introduced by the pressurization system, and is reheated to a desired temperature and then sent to the spherical tank for storage or transportation.
9. The system of claim 1, wherein the piping between the outlet of the recuperator and the ethylene spherical tank is provided with temperature, pressure and flow monitoring values that are interlocked with the heat source steam.
10. The system of claim 1, wherein the liquid phase outlet piping of the ethylene spherical tank is provided with an output pump for sending the ethylene in the spherical tank to the cascade chiller system or to the output.
11. The system of claim 1, wherein the low temperature ethylene storage tank has a temperature of-104 ℃ to-101 ℃ and the ethylene spherical tank has a temperature of-35 ℃ to-29 ℃.
12. A method for the combined storage of ethylene, using a system according to any one of claims 1 to 11, comprising: 1) pouring the ethylene from the low-temperature ethylene storage tank to the ethylene spherical tank, wherein the liquid in the low-temperature ethylene storage tank is sequentially pressurized by a pressurization system, reheated by a reheater and poured into the ethylene spherical tank by a pipeline; 2) and pouring the materials from the ethylene spherical tank to the low-temperature ethylene storage tank, wherein the liquid in the ethylene spherical tank is pressurized by an external delivery pump, subcooled by a cascade refrigerator system, throttled and flashed, and then the materials are poured into the low-temperature ethylene storage tank.
13. The combined ethylene storage method as claimed in claim 12, wherein the cascade chiller system is used as a backup for the propylene chiller in the reliquefaction recovery system for start-up conditions.
14. The method for jointly storing the ethylene according to claim 12, wherein the parameters of the liquid in the low-temperature ethylene storage tank are-104 ℃ to-101 ℃ and 5-20 kpa g, the pressurization system is used for pressurizing to 6-23 barg, the reheating of the reheating device is used for reheating to-40 ℃ to-35 ℃, the parameters of the liquid in the ethylene spherical tank are-35 ℃ to-29 ℃ and 17-19 barg, the external conveying pump is used for pressurizing to 20-23 barg, the supercooling of the cascade refrigerator system is used for-75 ℃ to-60 ℃, and the throttling is carried out to 0.2-0.5 barg.
15. The combined storage method of ethylene according to claim 12, further comprising a boil-off gas treatment step of: 5-20 kpa g of low-temperature gas at-90 to-80 ℃ in the low-temperature ethylene storage tank enters a low-temperature compressor unit configured in a reliquefaction recovery system through a control valve to be compressed and cooled to 16-18 barg, and two channels are arranged at 35-40 ℃, wherein the first channel exchanges heat with a refrigerating unit, evaporated gas is condensed into low-temperature liquid at-41 to-38 ℃, and the low-temperature liquid enters a condensate receiving tank to be flashed out without condensing and then returns to the low-temperature ethylene storage tank through a third channel; the second channel enters a low-temperature condensation evaporator configured in a cascade refrigerator system, exchanges heat with the low-temperature circulating refrigerant, liquefies into liquid at minus 45 ℃ to minus 40 ℃, and then returns to the low-temperature ethylene storage tank.
CN202110509694.1A 2021-05-11 2021-05-11 Ethylene combined storage system and method Active CN113266759B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110509694.1A CN113266759B (en) 2021-05-11 2021-05-11 Ethylene combined storage system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110509694.1A CN113266759B (en) 2021-05-11 2021-05-11 Ethylene combined storage system and method

Publications (2)

Publication Number Publication Date
CN113266759A true CN113266759A (en) 2021-08-17
CN113266759B CN113266759B (en) 2022-06-03

Family

ID=77230321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110509694.1A Active CN113266759B (en) 2021-05-11 2021-05-11 Ethylene combined storage system and method

Country Status (1)

Country Link
CN (1) CN113266759B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113855211A (en) * 2021-10-28 2021-12-31 海杰亚（北京）医疗器械有限公司 Low-temperature freezing treatment system and control method thereof
CN114508692A (en) * 2022-02-23 2022-05-17 江苏中建工程设计研究院有限公司 Ethylene unloading system and unloading method
CN114893719A (en) * 2022-05-27 2022-08-12 正星氢电科技郑州有限公司 BOG gas recovery system and method for hydrogenation and liquefied natural gas combined station

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542319A (en) * 2003-11-04 2004-11-03 常州东昊科技开发有限公司 Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure
CN103062620A (en) * 2013-01-24 2013-04-24 成都深冷液化设备股份有限公司 Low-temperature BOG gas cold energy recovery device and process
CN103486441A (en) * 2013-09-25 2014-01-01 中国石油集团工程设计有限责任公司 LPG (liquefied petroleum gas) low-temperature normal-pressure storage system and method
CN205155544U (en) * 2015-11-19 2016-04-13 华陆工程科技有限责任公司 LPG ordinary pressure low temperature is stored and storage device is united to normal atmospheric temperature pressure
CN105715949A (en) * 2016-04-12 2016-06-29 浙江新锐空分设备有限公司 Low-temperature ethylene prestressed concrete full-container storage gasifying external transportation system
CN207112351U (en) * 2017-07-25 2018-03-16 辽宁同益石化有限公司 Ethene low temperature is from press mounting vehicle system
CN207112352U (en) * 2017-07-26 2018-03-16 辽宁同益石化有限公司 Ethene entrucking cryogenic system
CN109058758A (en) * 2018-08-27 2018-12-21 中国寰球工程有限公司 The comprehensive transportation system of ethylene and method
CN110005945A (en) * 2019-04-24 2019-07-12 南京扬子石油化工设计工程有限责任公司 Liquefied ammonia conversion equipment and liquefied ammonia conversion method
CN110296317A (en) * 2019-07-29 2019-10-01 中国天辰工程有限公司 A kind of low temperature receiving station cold energy, comprehensive utilization system for heat energy and method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542319A (en) * 2003-11-04 2004-11-03 常州东昊科技开发有限公司 Method for liquid phase ethylene storage by combination of ordinary pressure and medium pressure
CN103062620A (en) * 2013-01-24 2013-04-24 成都深冷液化设备股份有限公司 Low-temperature BOG gas cold energy recovery device and process
CN103486441A (en) * 2013-09-25 2014-01-01 中国石油集团工程设计有限责任公司 LPG (liquefied petroleum gas) low-temperature normal-pressure storage system and method
CN205155544U (en) * 2015-11-19 2016-04-13 华陆工程科技有限责任公司 LPG ordinary pressure low temperature is stored and storage device is united to normal atmospheric temperature pressure
CN105715949A (en) * 2016-04-12 2016-06-29 浙江新锐空分设备有限公司 Low-temperature ethylene prestressed concrete full-container storage gasifying external transportation system
CN207112351U (en) * 2017-07-25 2018-03-16 辽宁同益石化有限公司 Ethene low temperature is from press mounting vehicle system
CN207112352U (en) * 2017-07-26 2018-03-16 辽宁同益石化有限公司 Ethene entrucking cryogenic system
CN109058758A (en) * 2018-08-27 2018-12-21 中国寰球工程有限公司 The comprehensive transportation system of ethylene and method
CN110005945A (en) * 2019-04-24 2019-07-12 南京扬子石油化工设计工程有限责任公司 Liquefied ammonia conversion equipment and liquefied ammonia conversion method
CN110296317A (en) * 2019-07-29 2019-10-01 中国天辰工程有限公司 A kind of low temperature receiving station cold energy, comprehensive utilization system for heat energy and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113855211A (en) * 2021-10-28 2021-12-31 海杰亚（北京）医疗器械有限公司 Low-temperature freezing treatment system and control method thereof
CN114508692A (en) * 2022-02-23 2022-05-17 江苏中建工程设计研究院有限公司 Ethylene unloading system and unloading method
CN114508692B (en) * 2022-02-23 2023-09-26 江苏中建工程设计研究院有限公司 Ethylene unloading system and unloading method
CN114893719A (en) * 2022-05-27 2022-08-12 正星氢电科技郑州有限公司 BOG gas recovery system and method for hydrogenation and liquefied natural gas combined station
CN114893719B (en) * 2022-05-27 2023-11-21 正星氢电科技郑州有限公司 BOG gas recovery system and method for hydrogenation and liquefied natural gas combined building station

Also Published As

Publication number Publication date
CN113266759B (en) 2022-06-03

Similar Documents

Publication Publication Date Title
CN113266759B (en) Ethylene combined storage system and method
US9506690B2 (en) Process for the production of a subcooled liquefied natural gas stream from a natural gas feed stream, and associated installation
US20150204603A1 (en) System And Method For Natural Gas Liquefaction
EP1813889B1 (en) Cryogenic liquefying refrigerating method and device
RU2749931C2 (en) Natural gas liquefaction plant that uses mechanical cooling and liquid nitrogen cooling
AU2019268173B2 (en) Multiple pressure mixed refrigerant cooling process and system
JP6235467B2 (en) Condenser / evaporator for cooling device and method thereof
RU2750778C2 (en) System and method for liquefaction with a combined cooling agent
RU2748319C2 (en) Method for cooling the hydrocarbon feed stream and installation for cooling the hydrocarbon feed stream cooling the hydrocarbon stream
US10753676B2 (en) Multiple pressure mixed refrigerant cooling process
RU2724091C2 (en) Device for liquefaction of hydrocarbon feed stream (versions)
CN104019626B (en) The cold method and device preparing liquefied natural gas of a kind of azeotrope two-stage system
CN107345728A (en) A kind of cold energy of liquefied natural gas peculiar to vessel is used for the System and method for of freezer refrigerating
CN110186251A (en) It is a kind of to recycle natural gas liquefaction devices and method suitable for ultra-large three
CN107543368B (en) Residual BOG gas recycling system
CN203949440U (en) A kind of system of two-stage pre-cooling type azeotrope refrigeration liquefying natural gas
CN108072235B (en) Air separation system
AU2020327920B2 (en) Systems and methods for improving the efficiency of open-cycle cascade-based liquified natural gas systems
CN219415431U (en) Be used for industry CO 2 Cold source system of liquefying device
CN216868943U (en) Hydrogen liquefaction device
CN116734567A (en) Hydrogen liquefaction system
CN116772515A (en) Natural gas liquefaction denitrification process and device
CN118463500A (en) Liquid air energy storage system and method for coupling LNG cold energy
WO2024223856A1 (en) Energy efficient co2 recovery system for dry ice production plant
CN114413573A (en) Natural gas liquefaction system and process based on coiled tube heat exchanger

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant