CN209222074U - A kind of gas distributor for Fischer-Tropsch synthesis device - Google Patents
A kind of gas distributor for Fischer-Tropsch synthesis device Download PDFInfo
- Publication number
- CN209222074U CN209222074U CN201821448944.5U CN201821448944U CN209222074U CN 209222074 U CN209222074 U CN 209222074U CN 201821448944 U CN201821448944 U CN 201821448944U CN 209222074 U CN209222074 U CN 209222074U
- Authority
- CN
- China
- Prior art keywords
- distributor
- gas
- fischer
- reactor
- tropsch synthesis
- 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
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a kind of gas distributors for Fischer-Tropsch synthesis device, the rebuilding of the gas distributor in vertical direction, upper layer distributor is pipe distributor, it is passed through low hydrogen-carbon ratio unstripped gas, underlying distributor form can use two kinds, a kind of board-like distributor for being furnished with pre-distributor for lower section, another kind are pipe distributor, are passed through hydrogen rich gas.Compared with prior art, the conversion ratio of effective gas (hydrogen and carbon monoxide) can be improved in the utility model, improves catalyst life, reduces ton product catalyst consumption.
Description
Technical field
The utility model relates to a kind of gas distributors, more particularly, to a kind of gas for Fischer-Tropsch synthesis device point
Cloth device.
Background technique
The key reaction of F- T synthesis technology is that carbon monoxide and hydrogen generate hydrocarbon under the effect of the catalyst,
Hydrocarbon generated is largely at normal temperatures and pressures liquid, and there are also be partially gaseous state.According to target product, catalyst
With the difference of reaction condition, F- T synthesis technology can be divided into high temperature fischer-tropsch synthesis and Low Temperature Fischer Tropsch synthetic technology.Low Temperature Fischer Tropsch closes
At fixed bed or paste state bed reactor is used, major product is diesel oil, naphtha and high-quality wax.High-temperature Fischer-Tropsch synthesis reaction temperature
Degree uses fluidized-bed reactor, and major product is gasoline, diesel oil, oxygen-containing organic chemicals and alkene.
The gas distributed mass and hydrogen-carbon ratio of art-recognized reactor inlet gas are to product selectivity and catalyst life
It influences significant.Fischer-Tropsch synthesis device enters implication generally by material synthesis gas, recycled offgas and from the hydrogen rich gas of other units
Composition, the prior art by gas distributor or distribution grid enter reactor after mixing above-mentioned gas, and there are effective gas shifts
The disadvantages of rate is lower, and catalyst life is shorter, and ton product catalyst consumption is higher.
Utility model content
It asks the purpose of the utility model is to overcome catalyst life of the existing technology is short low with olefine selective
Topic, provides a kind of Fischer-Tropsch synthesis device gas distributor that can be improved effective gas conversion ratio and catalyst life.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of gas distributor for Fischer-Tropsch synthesis device, rebuilding in vertical direction, upper layer distributor are logical
Enter low hydrogen-carbon ratio unstripped gas, underlying distributor is passed through hydrogen rich gas.
Fischer-Tropsch synthesis device use iron-based or cobalt-base catalyst, 200~400 DEG C of reaction temperature, reaction pressure 1.0~
6.0MPa, type of reactor are gas-solid fluidized bed or gas-liquid-solid slurry bed system.Upper layer distributor pressure drop is greater than 0.01MPa, is passed through
Hydrogen-carbon ratio 0.7~2 in low hydrogen-carbon ratio unstripped gas, is generally from the fresh synthesis gas of purification.Underlying distributor pressure drop is greater than
0.01MPa, hydrogen content is greater than 40vol% in the hydrogen rich gas being passed through, using circulating air or the gaseous mixture of circulating air and unstripped gas,
Preferred cycle gas.Hydrogen-carbon ratio is 3-6 after controlling the gas mixing that two distributors are passed through.
The upper layer distributor is pipe distributor, which is in be arranged concentrically with reactor, in its distributor pipe
The upper multiple nozzles of setting, jet expansion direction is downward, is in 0~60 degree of angle with vertical direction.
The form of the underlying distributor can be using two kinds, a kind of board-like distributor for being furnished with pre-distributor for lower section,
Another kind is pipe distributor.
Uniform making circular hole on the board-like distributor passes through solder joint, bolt, bracket between distributor and reactor shell
Etc. fixed forms one or more combinations connection, junction is installed on round hole by filling sealing material or welded seal
The nozzle or blast cap of perforated plate.
The gas vent of the pre-distributor is with reactor in being arranged concentrically, and direction is vertically downward.
When underlying distributor is pipe distributor, which is in be arranged concentrically with reactor, on its distributor pipe
Multiple nozzles are set, and jet expansion direction is downward, is in 0~60 degree of angle with vertical direction.Compared with prior art, this is practical
The gas distributor of novel offer can redistribute gas twice, significantly improve gas in reactor inside diameter to distribution
Uniformity reduces side reaction, improves effective gas conversion ratio.Firstly, the gas vent of pipe distributor (or pre-distributor) is downward
Gas is set to get on, get off baffling movement, baffling gas and exit gas reverse convection carry out first time redistribution.Then, two layers point
The gas that cloth device projects reverse convection between distributor carries out second and redistributes.
There are two the principal elements for influencing fischer-tropsch synthetic catalyst service life: (1) catalyst surface and duct knot carbon are led
Cause catalyst inactivation；(2) local gas velocity is too fast causes catalyst granules severe impact to lead to broken loss.The utility model is directed to
Above-mentioned two o'clock proposes the design scheme of optimization, increases catalyst life, reduces the consumption of ton product catalyst:
(1) unstripped gas of low hydrogen-carbon ratio and hydrogen rich gas enter Fischer-Tropsch synthesis device from upper layer and lower layer distributor respectively, low
The unstripped gas of hydrogen-carbon ratio reacts in catalyst active center generates hydrocarbon products, hydrogen rich gas by the hydro carbons fast eliminating of generation,
Activated centre is avoided to tie carbon；
(2) gas, which enters reactor from two layers of distributor, can be effectively reduced office near jet expansion and underlying distributor
Portion's gas velocity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model in embodiment 1；
Fig. 2 is the structural schematic diagram of the utility model in embodiment 2.
In figure, 1 is hydrogen rich gas, and 2 be low hydrogen-carbon ratio unstripped gas, and 3 be upper layer pipe distributor, and 4 be board-like distributor, and 5 are
Pre-distributor, 6 be lower layer's pipe distributor.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These are all within the protection scope of the present invention.
A kind of gas distributor for Fischer-Tropsch synthesis device, rebuilding in vertical direction, upper layer distributor are logical
Enter low hydrogen-carbon ratio unstripped gas, underlying distributor is passed through hydrogen rich gas.Fischer-Tropsch synthesis device uses iron-based or cobalt-base catalyst, reaction
200~400 DEG C of temperature, 1.0~6.0MPa of reaction pressure, type of reactor is gas-solid fluidized bed or gas-liquid-solid slurry bed system.Upper layer
Distributor pressure drop is greater than 0.01MPa, hydrogen-carbon ratio 0.7~5 in the low hydrogen-carbon ratio unstripped gas being passed through.Underlying distributor pressure drop is greater than
0.01MPa, hydrogen content is greater than 40vol% in the hydrogen rich gas being passed through, using circulating air or the gaseous mixture of circulating air and unstripped gas,
Preferred cycle gas, hydrogen-carbon ratio is in 3-6 after the gas mixing that two distributors are passed through.
Upper layer distributor is pipe distributor, which is in be arranged concentrically with reactor, on pipe distributor
It is uniformly arranged aperture, the aperture of aperture is downward, and nozzle is also equipped on aperture, and the export direction of nozzle is downward, with Vertical Square
To the angle for being in 0~60 degree.
The form of underlying distributor can use two kinds, and a kind of board-like distributor for being furnished with pre-distributor for lower section is another
Kind is pipe distributor.Uniform making circular hole on the board-like distributor used, between distributor and reactor shell by solder joint,
One or more combinations of the fixed forms such as bolt, bracket connect, and junction is round by filling sealing material or welded seal
The nozzle or blast cap of perforated plate are installed, the gas vent of pre-distributor is with reactor in being arranged concentrically, and direction is vertically downward on hole.
When underlying distributor is pipe distributor, which can be identical with upper layer distributor, can also be with
Difference is uniformly arranged aperture, aperture for example, the pipe distributor used is in be arranged concentrically with reactor on pipe distributor
Aperture it is downward, nozzle is also equipped on aperture, the export direction of the nozzle is downward, is in 0~60 degree of angle with vertical direction.
It is further embodiment below, is described further in conjunction with attached drawing.
Embodiment 1
A kind of gas distributor for Fischer-Tropsch synthesis device, structure are as shown in Figure 1.Reactor is diameter 10m high
Warm F- T synthesis fluidized-bed reactor, catalyst are ferrum-based catalyst, and loaded catalyst 700t, reacts by 345 DEG C of reaction temperature
Pressure 2.5MPa.Hydrogen rich gas 1 be recycled offgas, hydrogen content 50vol%, pass sequentially through pre-distributor 5 and board-like distributor 4 into
Enter reactor.Pre-distributor uses baffling tubular type pre-distributor, board-like distributor pressure drop 0.02MPa.Low hydrogen-carbon ratio unstripped gas 2 is
The synthesis gas that coal gas device provides, hydrogen-carbon ratio 1.6 enter reactor by upper layer pipe distributor 3.The distribution of upper layer tubular type
Device 3, in being arranged concentrically, is uniformly arranged aperture with reactor on pipe distributor, and the aperture of aperture is downward, in addition in tubular type point
Be also equipped with nozzle on the aperture of cloth device, jet expansion straight down, pressure drop 0.02MPa.
Use the reactor catalyst replacement frequency of pure gas distributor air inlet after mixing for 90t/ weeks, effective gas conversion
Rate 56%.Use the reactor catalyst replacement frequency of the utility model for 60t/ weeks, effective gas conversion ratio 58%.
Embodiment 2
A kind of gas distributor for Fischer-Tropsch synthesis device, structure are as shown in Figure 2.Reactor is that diameter 10m is low
Warm F- T synthesis paste state bed reactor, catalyst are ferrum-based catalyst, and loaded catalyst 220t, reacts by 240 DEG C of reaction temperature
Pressure 2.5MPa.Hydrogen rich gas 1 is recycled offgas and the gaseous mixture from PSA unit hydrogen, hydrogen content 50vol%, under
The synthesis gas that layer pipe distributor 6 is provided into reactor, low hydrogen-carbon ratio unstripped gas 2 for coal gas device, hydrogen-carbon ratio 1.6,
Enter reactor by upper layer pipe distributor 3.Above-mentioned pipe distributor jet expansion straight down, pressure drop 0.04MPa.
Use the reactor catalyst replacement frequency of pure gas distributor air inlet after mixing for 22t/ weeks, effective gas conversion
Rate 65%.Use the reactor catalyst replacement frequency of the utility model for 18t/ weeks, effective gas conversion ratio 68%.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on the substantive content of the utility model.
Claims (4)
1. a kind of gas distributor for Fischer-Tropsch synthesis device, which is characterized in that the gas distributor is in vertical direction
Rebuilding, upper layer distributor are the distributor for being passed through low hydrogen-carbon ratio unstripped gas, and underlying distributor is the distribution for being passed through hydrogen rich gas
Device；
The underlying distributor is board-like distributor, and the lower section of the board-like distributor is furnished with pre-distributor,
Alternatively, the underlying distributor is pipe distributor, which is in be arranged concentrically with reactor, in its distributor pipe
The upper multiple nozzles of setting, jet expansion direction is downward, is in 0~60 degree of angle with vertical direction.
2. a kind of gas distributor for Fischer-Tropsch synthesis device according to claim 1, which is characterized in that on described
Layer distributor is pipe distributor, which, in being arranged concentrically, is arranged multiple nozzles with reactor on its distributor pipe,
Jet expansion direction is downward, is in 0~60 degree of angle with vertical direction.
3. a kind of gas distributor for Fischer-Tropsch synthesis device according to claim 1, which is characterized in that the plate
Uniform making circular hole on formula distributor passes through the one or more of solder joint, bolt or bracket between distributor and reactor shell
Fixed form combination connection, junction by filling sealing material or welded seal, installed on round hole perforated plate nozzle or
Blast cap.
4. a kind of gas distributor for Fischer-Tropsch synthesis device according to claim 1, which is characterized in that described pre-
The gas vent of distributor is with reactor in being arranged concentrically, and direction is vertically downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821448944.5U CN209222074U (en) | 2018-09-05 | 2018-09-05 | A kind of gas distributor for Fischer-Tropsch synthesis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821448944.5U CN209222074U (en) | 2018-09-05 | 2018-09-05 | A kind of gas distributor for Fischer-Tropsch synthesis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209222074U true CN209222074U (en) | 2019-08-09 |
Family
ID=67498389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821448944.5U Active CN209222074U (en) | 2018-09-05 | 2018-09-05 | A kind of gas distributor for Fischer-Tropsch synthesis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209222074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905904A (en) * | 2018-09-05 | 2018-11-30 | 上海兖矿能源科技研发有限公司 | A kind of gas distributor for Fischer-Tropsch synthesis device |
-
2018
- 2018-09-05 CN CN201821448944.5U patent/CN209222074U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905904A (en) * | 2018-09-05 | 2018-11-30 | 上海兖矿能源科技研发有限公司 | A kind of gas distributor for Fischer-Tropsch synthesis device |
| CN108905904B (en) * | 2018-09-05 | 2024-05-28 | 上海兖矿能源科技研发有限公司 | Gas distribution method for Fischer-Tropsch synthesis reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102827629B (en) | Catalytic cracking reaction device fed with combination of light raw materials and heavy oil | |
| CN108017496B (en) | Apparatus for producing olefins and aromatic hydrocarbons and method thereof | |
| CN102600771B (en) | Fluidized bed reactor and method for methanation of gas mixture containing H2 and CO | |
| CN102671580A (en) | Axial bed-increased type quenching methanol-to-propylene (MTP) fixed bed reactor | |
| CN104107671A (en) | Fluidized bed reactor and method for carrying out methanol to olefin reaction by using the fluidized bed reactor | |
| CN101830769A (en) | Method for converting methanol into propylene | |
| CN104098419B (en) | Coal, natural gas combination preparing light olefins from methanol system and method | |
| CN209222074U (en) | A kind of gas distributor for Fischer-Tropsch synthesis device | |
| CN102504858A (en) | Method for directionally synthesizing gasoline or diesel oil through Fischer-Tropsch process | |
| CN100390132C (en) | Gas distributor in fluidized bed for aniline synthesis and aniline synthesis method | |
| CN101811072A (en) | Regeneration control method in methanol-to-olefins reaction process | |
| CN103341341A (en) | Fluidized bed reactor for preparing butadiene | |
| CN203355710U (en) | Rapid fluidized bed reactor for producing butadiene by butylene oxydehydrogenation | |
| CN202666813U (en) | Axially layer by layer progressively increased chilled methanol to propylene (MTP) fixed bed reactor | |
| CN105255532B (en) | The methanation process that a kind of fluid bed is combined with fixed bed | |
| CN102485840B (en) | Catalytic cracking method and device thereof | |
| CN105566023B (en) | The methanol to olefins reaction regenerating unit and its reaction method efficiently mixed | |
| CN206731079U (en) | A kind of alkane catalytic dehydrogenation vertical fixed-bed reactor | |
| CN108905904A (en) | A kind of gas distributor for Fischer-Tropsch synthesis device | |
| CN202962437U (en) | Fluidized bed reaction regeneration device | |
| CN102775261A (en) | Multifunctional methanol processing method and apparatus | |
| CN103772105B (en) | Improve the reaction unit of yield of light olefins | |
| CN105197888A (en) | Method for preparing synthetic gas through methane-carbon dioxide chemical-looping catalytic reforming | |
| CN106669552B (en) | Slurry bed reaction device for preparing liquid fuel from biomass synthesis gas and use method thereof | |
| CN103739428A (en) | Device for producing low-carbon olefins from methanol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |