CN114672344B - Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof - Google Patents
Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof Download PDFInfo
- Publication number
- CN114672344B CN114672344B CN202210131572.8A CN202210131572A CN114672344B CN 114672344 B CN114672344 B CN 114672344B CN 202210131572 A CN202210131572 A CN 202210131572A CN 114672344 B CN114672344 B CN 114672344B
- Authority
- CN
- China
- Prior art keywords
- heavy oil
- water
- temperature
- feeding
- cracking
- 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.)
- Active
Links
- 239000000295 fuel oil Substances 0.000 title claims abstract description 80
- 238000000926 separation method Methods 0.000 title claims abstract description 42
- 238000004230 steam cracking Methods 0.000 title claims abstract description 35
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005336 cracking Methods 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000443 aerosol Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000000047 product Substances 0.000 claims description 29
- 238000001179 sorption measurement Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000003209 petroleum derivative Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 238000004064 recycling Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- -1 ethylene, propylene, butylene Chemical group 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002352 steam pyrolysis Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G55/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process
- C10G55/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only
- C10G55/04—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only including at least one thermal cracking step
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/34—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert preheated fluids, e.g. with molten metals or salts
- C10G9/36—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert preheated fluids, e.g. with molten metals or salts with heated gases or vapours
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/20—C2-C4 olefins
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The application discloses a small test device for steam cracking of heavy oil and separation and recovery of products and a use method thereof. The device comprises a preheating furnace, a cracking furnace, a gas-liquid separation tank, a coiled water bath cooling tank, a washing tank, a condensing heat exchanger and an aerosol absorption tube which are connected in sequence; the preheating furnace is equipped with a plurality of temperature areas that connect gradually and can independently control the temperature, wherein: the temperature in the rear temperature zone is not lower than that in the front temperature zone, the forefront temperature zone is connected with the water feeding component, and the rest temperature zones are respectively connected with the heavy oil feeding component through control valves and heavy oil feeding pipes; a heating jacket is arranged on the heavy oil feeding pipe; the gas-liquid separation tank is internally provided with a water cooling coil pipe for cooling water to flow, and the water inlet end of the water cooling coil pipe is connected with a cooling water outlet of the coil pipe type water bath cooling tank. According to the application, the full cracking of petroleum hydrocarbon with high aromatic hydrocarbon content and high carbon number can be realized by adjusting the feeding flow of water and heavy oil and setting the temperature parameters of the preheating furnace and the cracking furnace.
Description
Technical Field
The application relates to the field of petrochemical industry, in particular to a small test device for steam cracking heavy oil and separating and recycling products and a use method thereof.
Background
The low-carbon olefin (namely, ethylene, propylene, butylene and butadiene) is an important chemical raw material, and the main production process is steam cracking.
Although steam pyrolysis processes have been well developed and suited for their intended purpose, the choice of raw materials is very limited, and at present light petroleum hydrocarbons such as ethane, propane, butane and naphtha are the main ones.
At present, the requirements of the heavy fuels such as aviation kerosene, diesel oil and the like are reduced, the productivity is seriously excessive, and the steam cracking of the heavy petroleum hydrocarbon to prepare the light olefins is considered as a new path for consuming the heavy petroleum hydrocarbon and producing the high-value light olefins.
The patent specification with publication number CN 110819384A discloses a fractional conversion device and method for cracking and gasifying heavy oil in a fluidized bed. Patent specification with publication number CN 110186806A discloses a test device and a method for preparing ethylene by steam cracking.
Heavy oils differ significantly in composition from light petroleum hydrocarbons, especially heavy oils have significantly higher aromatic content than light petroleum hydrocarbons and higher concentrations of sulfur, nitrogen, and other heteroatom compounds.
In order to smoothly carry out the steam cracking process of heavy oil, the phenomenon of frequent pipe blockage is avoided. The steam cracking of heavy oil requires a lower cracking temperature and a higher water-to-oil ratio than light oil. Meanwhile, the distribution of products obtained by steam cracking of heavy oil is greatly different from that of light oil. Under the same cracking condition, the tar produced by the heavy oil is more than that produced by the light oil, and the pressure on a product separation and recovery system is also higher.
The application is particularly provided for realizing smooth cracking of heavy oil and separating and recycling of the whole components of the product in the steam cracking process of heavy oil.
Disclosure of Invention
Aiming at the technical problems and the defects existing in the field, the application provides a small test device for steam cracking and product separation and recovery of heavy oil, which is used for preserving heat of a heavy oil conveying pipeline and preventing high-boiling-point heavy oil from solidifying in the oil conveying pipeline, and the liquefied heavy oil enters a preheating furnace for gasification and is fully mixed with water vapor. And (3) carrying out steam cracking reaction on heavy oil entering a cracking furnace to generate low-carbon olefin with high added value and tar. The low-carbon olefin and tar are cooled and recovered step by step, so that the fractional quality utilization of the cracking products is realized. The device has wide application range and high separation efficiency, and can stably operate for a long time.
A small test device for steam cracking of heavy oil and separation and recovery of products comprises a preheating furnace, a cracking furnace, a gas-liquid separation tank, a coiled water bath cooling tank, a water washing tank (used for washing low boiling tar which is not completely cooled), a condensing heat exchanger and an aerosol adsorption tube which are connected in sequence;
the preheating furnace is equipped with a plurality of temperature areas that connect gradually and can independently control the temperature, wherein: the temperature in the rear temperature zone is not lower than that in the front temperature zone, the forefront temperature zone is connected with the water feeding component, and the rest temperature zones are respectively connected with the heavy oil feeding component through control valves and heavy oil feeding pipes;
a heating jacket is arranged on the heavy oil feeding pipe;
the inside water-cooling coil that supplies cooling water to flow that is equipped with of gas-liquid separation jar, the water inlet end of water-cooling coil is connected with the cooling water outlet of coiled water bath cooling tank, realizes water-cooling ladder make full use of.
The foremost temperature zone of the preheating furnace is only used for gasifying inflow water, so that heavy oil can be heated and dispersed better later.
The heavy oil can enter and be distributed in different temperature areas by regulating and controlling the control valve.
In a preferred embodiment, the water feeding assembly comprises a water feeding storage tank and a water feeding pump which are connected in sequence, and the other end of the water feeding pump is connected with the foremost temperature zone of the preheating furnace.
In a preferred embodiment, the water feed pump has a feed range of 0.01 to 40mL/min.
In a preferred embodiment, the heavy oil feed assembly comprises a heavy oil feed storage tank and a heavy oil feed pump which are connected in sequence, and the other end of the heavy oil feed pump is connected with a heavy oil feed pipe.
In a preferred embodiment, the heavy oil feed pump has a feed range of 0.01 to 40mL/min.
In a preferred embodiment, the temperature of the heating jacket is controlled in the range of 60 to 140 ℃.
In a preferred embodiment, the temperature control range of the preheating furnace is room temperature to 650 ℃, and thermocouples are arranged in each temperature zone to measure the temperature in real time.
In a preferred embodiment, the preheating furnace is provided with 6 temperature zones in total.
In a preferred embodiment, the furnace tube material of the preheating furnace is stainless steel 316L.
In a preferred embodiment, the temperature control range of the cracking furnace is room temperature to 1000 ℃, the partition temperature control can be performed, and thermocouples are arranged in each temperature area to measure the temperature in real time.
In a preferred embodiment, the pyrolysis furnace is provided with 5 temperature zones in total.
In a preferred embodiment, the furnace tube material of the pyrolysis furnace is stainless steel 800H.
In a preferred embodiment, the bottom of the gas-liquid separation tank is provided with an exhaust valve for recycling tar.
In a preferred embodiment, the condensing heat exchanger is a tube type cooler, a plurality of tubes (for example, 21 tubes can be automatically increased or decreased according to the cooling capacity requirement) are arranged in the condensing heat exchanger, and the condensing heat exchanger is externally connected with low-temperature circulating water.
In a preferred embodiment, the low temperature circulating water cooling has a temperature control range of-20 to 0 ℃.
In a preferred embodiment, the aerosol adsorption tube houses a sand core for removing mist and aerosol impurities.
In a preferred embodiment, the sand core is 160 meshes, and the specific sand core model can be selected according to actual requirements.
The application also provides a use method of the small test device for steam cracking and product separation and recovery of heavy oil, which comprises the following steps:
s1, setting the temperature of a preheating furnace and a cracking furnace by referring to heavy oil components;
s2, after the preheating furnace and the cracking furnace are heated, starting water and heavy oil for feeding, and simultaneously starting cooling water and a condensing heat exchanger to cool and separate products step by step;
s3, after the steam cracking reaction is finished, suspending water and heavy oil feeding, and sequentially recovering reaction byproduct tar from the gas-liquid separation tank and the washing tank; the component analysis is carried out after the pyrolysis gas flows through the aerosol adsorption tube;
s4, respectively changing water and heavy oil feed into deionized water and ethanol, cleaning a feed assembly, then connecting an air purging pipeline, finally changing nitrogen into the purging pipeline, and waiting for the next heavy oil cracking.
Compared with the prior art, the application has the main advantages that:
the temperature parameters of the preheating furnace and the cracking furnace can be set by adjusting the feeding flow of water and heavy oil, so that the full cracking of petroleum hydrocarbon with high aromatic hydrocarbon content and high carbon number can be realized. The cooling modules such as a gas-liquid separation tank, a coiled water bath cooling tank, a washing tank, a condensing heat exchanger, an aerosol adsorption tube and the like are cascaded, so that the tar of each component is completely recovered on the basis of fully cooling pyrolysis gas. The device has wide application range and high separation efficiency, and can stably operate for a long time.
Drawings
FIG. 1 is a schematic diagram of a small sample apparatus for steam cracking of heavy oil and separation and recovery of products according to an embodiment;
in the figure: 1. a heavy oil feed storage tank; 2. a water feed storage tank; 3. a heavy oil feed pump; 4. a water feed pump; 5. a heating jacket; 6. a preheating furnace; 7. a pyrolysis furnace; 8. a gas-liquid separation tank; 9. coiled water bath cooling tank; 10. a washing tank; 11. a shell and tube heat exchanger; 12. an aerosol adsorption tube; 13. and (5) low-temperature circulating water cooling.
Detailed Description
The application will be further elucidated with reference to the drawings and to specific embodiments. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The methods of operation, under which specific conditions are not noted in the examples below, are generally in accordance with conventional conditions, or in accordance with the conditions recommended by the manufacturer.
As shown in fig. 1, the small sample device for steam cracking and product separation and recovery of heavy oil in this embodiment comprises a preheating furnace 6, a cracking furnace 7, a gas-liquid separation tank 8, a coiled water bath cooling tank 9, a water washing tank 10, a tubular heat exchanger 11 and an aerosol adsorption tube 12 which are connected in sequence.
The preheating furnace 6 is provided with 6 temperature areas which are connected in sequence and can be controlled in temperature independently, wherein: the temperature in the rear temperature zone is not lower than that in the front temperature zone, and the forefront temperature zone is sequentially connected with the water feeding pump 4 and the water feeding storage tank 2, and the rest temperature zones are respectively sequentially connected with the heavy oil feeding pump 3 and the heavy oil feeding storage tank 1 through control valves and heavy oil feeding pipes.
A heating jacket 5 is arranged on the heavy oil feeding pipe.
The gas-liquid separation tank 8 is internally provided with a water cooling coil pipe for cooling water to flow, and the water inlet end of the water cooling coil pipe is connected with a cooling water outlet of the coil pipe type water bath cooling tank 9.
The feeding range of the water feeding pump 4 is 0.01-40 mL/min.
The feeding range of the heavy oil feeding pump 3 is 0.01-40 mL/min.
The temperature control range of the heating jacket 5 is 60-140 ℃.
The temperature control range of the preheating furnace 6 is room temperature-650 ℃, and thermocouples are arranged in all temperature areas to measure the temperature in real time.
The furnace tube material of the preheating furnace 6 is stainless steel 316L.
The temperature control range of the cracking furnace 7 is room temperature-1000 ℃, the zonal temperature control can be executed, thermocouples are arranged in each temperature zone for real-time temperature measurement, and 5 temperature zones are arranged in total.
The furnace tube material of the cracking furnace 7 is stainless steel 800H.
An exhaust valve is arranged at the bottom of the gas-liquid separation tank 8 for recycling tar.
The condensing heat exchanger 11 is a tube type cooler, is internally provided with 21 tubes and is externally connected with the low-temperature circulating water cooling 13.
The temperature control range of the low-temperature circulating water 13 is-20 to 0 ℃.
The aerosol adsorption tube 12 is internally provided with two sand cores for removing mist and aerosol impurities.
The sand core is 160 meshes.
Application example 1
By using the small test device for heavy oil steam cracking and product separation and recovery in the embodiment, the diesel oil in a petrochemical plant is subjected to a small test for heavy oil steam cracking and product separation and recovery:
s1, the temperature settings of all areas of the preheating furnace are as follows in sequence: 200. 300, 400, 500, 600 ℃, and the temperature of the cracking furnace is set to 810 ℃.
S2, after the preheating furnace and the cracking furnace are heated, setting the flow of a water pump to be 2.8mL/min and the flow of an oil pump to be 4.2mL/min, and starting water and oil feeding. And simultaneously, starting cooling water and low-temperature circulating water to cool and separate the product step by step.
S3, after the steam cracking reaction is finished, stopping water and oil feeding. And recycling the reaction byproduct tar from the gas-liquid separation tank and the washing tank in sequence. The cracked gas flows through the aerosol adsorption tube and then is collected by an air bag for component analysis.
S4, respectively changing the water and oil feeding storage tanks into deionized water and ethanol, setting the feeding flow to be 2mL/min, and stopping after washing the pump for 30 min. Connect the air steel bottle, purge the pipeline for 90min. And finally, replacing the nitrogen steel cylinder, purging the pipeline for 10min, and waiting for the next heavy oil cracking.
The mass balance results show that the recovery rate of tar is above 98%.
Table 1 shows the PONA analysis results of diesel fuel.
TABLE 1 Diesel PONA analytical Table (C 12+ ：25.24％)
Application example 2
By using the heavy oil steam cracking and product separation and recovery pilot plant of the embodiment, the heavy oil steam cracking and product separation and recovery pilot plant test is carried out on the decompression tail oil of a petrochemical substation:
s1, the temperature settings of all areas of the preheating furnace are as follows in sequence: 300. 400, 500, 600 ℃, the temperature of the cracking furnace is set to 800 ℃.
S2, after the preheating furnace and the cracking furnace are heated, setting the flow of a water pump to be 2.8mL/min and the flow of an oil pump to be 4.0mL/min, and starting water and oil feeding. The heating jacket was set at 90 ℃. And simultaneously, starting cooling water and low-temperature circulating water to cool and separate the product step by step.
S3, after the steam cracking reaction is finished, stopping water and oil feeding. And recycling the reaction byproduct tar from the gas-liquid separation tank and the washing tank in sequence. The cracked gas flows through the aerosol adsorption tube and then is collected by an air bag for component analysis.
S4, respectively changing the water and oil feeding storage tanks into deionized water and ethanol, setting the feeding flow to be 2mL/min, and stopping after washing the pump for 60 min. Connect the air steel bottle, purge the pipeline 120min. And finally, replacing the nitrogen steel cylinder, purging the pipeline for 10min, and waiting for the next heavy oil cracking.
The mass balance results show that the recovery rate of tar is over 96 percent.
Table 2 shows the results of PONA analysis of the depressurized tail oil.
TABLE 2 PONA analysis Table of the vacuum tail oil (C) 12+ ：30.41％)
Further, it is to be understood that various changes and modifications of the present application may be made by those skilled in the art after reading the above description of the application, and that such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Claims (10)
1. The small-scale device for steam cracking of heavy oil and separation and recovery of products is characterized by comprising a preheating furnace (6), a cracking furnace (7), a gas-liquid separation tank (8), a coiled water bath cooling tank (9), a washing tank (10), a condensing heat exchanger (11) and an aerosol adsorption tube (12) which are connected in sequence;
the preheating furnace (6) is provided with a plurality of temperature areas which are connected in sequence and can be controlled in temperature independently, wherein: the temperature in the rear temperature zone is not lower than that in the front temperature zone, the forefront temperature zone is connected with the water feeding component, and the rest temperature zones are respectively connected with the heavy oil feeding component through control valves and heavy oil feeding pipes;
a heating jacket (5) is arranged on the heavy oil feeding pipe;
the temperature control range of the cracking furnace (7) is room temperature-1000 ℃, the zonal temperature control can be performed, thermocouples are arranged in each temperature zone for real-time temperature measurement, and 5 temperature zones are arranged in total;
the gas-liquid separation tank (8) is internally provided with a water cooling coil pipe for cooling water to flow, and the water inlet end of the water cooling coil pipe is connected with a cooling water outlet of the coil pipe type water bath cooling tank (9).
2. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the water feeding component comprises a water feeding storage tank (2) and a water feeding pump (4) which are connected in sequence, and the other end of the water feeding pump (4) is connected with the foremost temperature zone of the preheating furnace (6);
the feeding range of the water feeding pump (4) is 0.01-40 mL/min.
3. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the heavy oil feeding component comprises a heavy oil feeding storage tank (1) and a heavy oil feeding pump (3) which are connected in sequence, and the other end of the heavy oil feeding pump (3) is connected with a heavy oil feeding pipe;
the feeding range of the heavy oil feeding pump (3) is 0.01-40 mL/min.
4. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the temperature control range of the heating jacket (5) is 60-140 ℃.
5. The small test device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the temperature control range of the preheating furnace (6) is room temperature-650 ℃, thermocouples are arranged in each temperature zone for real-time temperature measurement, and 6 temperature zones are arranged in total;
the furnace tube material of the preheating furnace (6) is stainless steel 316L.
6. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the furnace tube material of the cracking furnace (7) is stainless steel 800H.
7. The small sample device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein an exhaust valve is arranged at the bottom of the gas-liquid separation tank (8) for recovering tar.
8. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein the condensing heat exchanger (11) is a tube type cooler, a plurality of tubes are arranged in the tube type cooler, and the tube type cooler is externally connected with low-temperature circulating water cooling (13);
the temperature control range of the low-temperature circulating water cooling (13) is-20-0 ℃.
9. The small-scale device for steam cracking and product separation and recovery of heavy oil according to claim 1, wherein a sand core is arranged in the aerosol adsorption tube (12) for removing foam and aerosol impurities;
the sand core is 160 meshes.
10. The method for using a small sample device for steam cracking and product separation and recovery of heavy oil according to claim 1, comprising the steps of:
s1, setting the temperatures of a preheating furnace (6) and a cracking furnace (7) by referring to heavy oil components;
s2, after the preheating furnace (6) and the cracking furnace (7) are heated, starting water and heavy oil for feeding, and simultaneously starting cooling water and a condensing heat exchanger (11) to cool and separate products step by step;
s3, after the steam cracking reaction is finished, suspending water and heavy oil feeding, and sequentially recovering reaction byproduct tar from the gas-liquid separation tank (8) and the water washing tank (10); the component analysis is carried out after the pyrolysis gas flows through the aerosol adsorption tube (12);
s4, respectively changing water and heavy oil feed into deionized water and ethanol, cleaning a feed assembly, then connecting an air purging pipeline, finally changing nitrogen into the purging pipeline, and waiting for the next heavy oil cracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131572.8A CN114672344B (en) | 2022-02-14 | 2022-02-14 | Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131572.8A CN114672344B (en) | 2022-02-14 | 2022-02-14 | Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114672344A CN114672344A (en) | 2022-06-28 |
| CN114672344B true CN114672344B (en) | 2023-10-03 |
Family
ID=82071488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210131572.8A Active CN114672344B (en) | 2022-02-14 | 2022-02-14 | Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114672344B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1233795A (en) * | 1967-10-07 | 1971-05-26 | ||
| WO2009022937A1 (en) * | 2007-08-07 | 2009-02-19 | Aleksandr Ivanovich Leonov | Method of thermal cracking of heavy-oil products |
| CN101517040A (en) * | 2006-09-28 | 2009-08-26 | 千代田化工建设株式会社 | Method of thermal cracking processing, thermal cracking reaction vessel and thermal cracking processing apparatus for petroleum heavy oil |
| CN107814675A (en) * | 2017-10-13 | 2018-03-20 | 浙江大学 | The method of hydrocarbon raw material steam thermal cracking |
| CN210127204U (en) * | 2019-07-17 | 2020-03-06 | 北京拓川科研设备股份有限公司 | Test device for preparing ethylene by steam cracking |
| CN215404036U (en) * | 2021-06-06 | 2022-01-04 | 青岛京润石化工程有限公司 | Petroleum hydrocarbon separation experimental device |
-
2022
- 2022-02-14 CN CN202210131572.8A patent/CN114672344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1233795A (en) * | 1967-10-07 | 1971-05-26 | ||
| CN101517040A (en) * | 2006-09-28 | 2009-08-26 | 千代田化工建设株式会社 | Method of thermal cracking processing, thermal cracking reaction vessel and thermal cracking processing apparatus for petroleum heavy oil |
| WO2009022937A1 (en) * | 2007-08-07 | 2009-02-19 | Aleksandr Ivanovich Leonov | Method of thermal cracking of heavy-oil products |
| CN107814675A (en) * | 2017-10-13 | 2018-03-20 | 浙江大学 | The method of hydrocarbon raw material steam thermal cracking |
| CN210127204U (en) * | 2019-07-17 | 2020-03-06 | 北京拓川科研设备股份有限公司 | Test device for preparing ethylene by steam cracking |
| CN215404036U (en) * | 2021-06-06 | 2022-01-04 | 青岛京润石化工程有限公司 | Petroleum hydrocarbon separation experimental device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114672344A (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11427770B2 (en) | Method for producing high-octane motor gasolines of low-octane hydrocarbon fractions, fractions of gaseous olefins and oxygenates and a plant for the method embodiment | |
| JP5690723B2 (en) | On-stream decoking method in hydrocarbon feedstock cracking furnace | |
| US20090012339A1 (en) | Catalytic Cracking Process Using Fast Fluidization for the Production of Light Olefins from Hydrocarbon Feedstock | |
| JP2018535280A (en) | Recovery and reuse of waste energy in industrial facilities | |
| CN101617028B (en) | Method and system for producing synthetic fuels | |
| CN104829436B (en) | The device and method of organic sulfur compound in a kind of deep removal methyl tertiary butyl ether(MTBE) | |
| JP2011525943A5 (en) | ||
| CN103787813B (en) | A kind of divinyl tail gas hydrogenation device and method | |
| CN114672344B (en) | Small sample device for steam cracking and product separation and recovery of heavy oil and use method thereof | |
| CN109012742B (en) | Catalyst for catalytic cracking of naphtha, preparation method and application | |
| CN109554189B (en) | Method for preparing low-carbon olefin by cracking petroleum hydrocarbon under reduced pressure | |
| RU2643366C1 (en) | Technological scheme of dehydration device of paraffin hydrocarbons c3-c5 (versions) | |
| US11753359B2 (en) | Online method for processing wax-containing crude methanol stream | |
| RU4746U1 (en) | INSTALLATION OF CATALYTIC PRODUCTION OF HIGH-OCTANE GASOLINE FROM HYDROCARBON RAW MATERIAL | |
| CN113563923A (en) | Gasoline hydrogenation method and gasoline hydrogenation device | |
| CN207749076U (en) | A kind of refinery product's upgrading synergy and hydrogen recovery system | |
| CN210825992U (en) | Device for preparing propylene and ethylene by coupling catalytic cracking of carbon four, light oil and methanol | |
| RU2815841C1 (en) | Plant for producing gasolines or concentrates of aromatic compounds with variable number of active reaction zones | |
| CN109957417B (en) | Modification treatment device and modification process for delayed coking stable gasoline | |
| CN210458013U (en) | Recovery system of ethylene in crude hydrogen | |
| CN111892470B (en) | Simulation test device and method for preparing olefin by steam cracking | |
| CN115992004B (en) | Reaction method and reactor for preparing low-carbon olefin and aromatic hydrocarbon by catalytic conversion of hydrocarbon raw material as reaction raw material | |
| CN110186806A (en) | A kind of experimental rig and method of preparing ethylene by steam cracking | |
| RU42825U1 (en) | INSTALLATION FOR JOINT THERMAL PYROLYSIS OF LIGHT HYDROCARBON C2-C4 ALKANES AND RECTIFIED GASOLINE IN LOW OLEFINS | |
| CN221601272U (en) | Hydrocracking reaction product fractionation device |
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 |