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Triphase slurry bed reactor for preparing liquid fuel with synthetic gas

A slurry bed reactor and liquid fuel technology, which is used in liquid hydrocarbon mixture recovery, petroleum industry and other directions, can solve the problems of difficult operation, high manufacturing cost, catalyst wear, etc., and achieves simple internal components, low manufacturing cost, and difficulty in manufacturing. inactive effect

Active Publication Date: 2009-08-19
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) There is an obvious scale-up problem in the mechanical stirred tank reactor, which can only be used in laboratory reactors;
[0005] (2) Circulating, jet or spouted bed reactors are unfavorable to the activity of the catalyst existing in the liquid phase due to the problem of the flow mode, and are easy to cause wear of the catalyst;
[0006] (3) In the general air flow bubbling suspension reactor, the liquid-solid suspension is discharged out of the reactor for treatment, which not only causes difficulty in catalyst recovery, but also easily leads to catalyst deactivation;
[0007] (4) Gas-liquid-solid three-phase slurry bed reactor with built-in heat exchanger and liquid-solid separation device, the internal components of the reactor are complex, the manufacturing cost is high, and the operation is difficult

Method used

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  • Triphase slurry bed reactor for preparing liquid fuel with synthetic gas
  • Triphase slurry bed reactor for preparing liquid fuel with synthetic gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] use figure 1 The three-phase slurry bed reactor and figure 2 gas distributor.

[0040] Among them: the diameter of the reaction part of the reactor is 1.45 meters, the height is 22 meters, the diameter of the separation part is 1.8 meters, and the height is 6 meters. degree angle, the diameter of the small hole is 1.0mm, y=1.2x, where x is the equivalent length of the reactor along the axial direction, and y is the equivalent heat transfer density of the heat exchanger along the axial direction;

[0041] Using synthesis gas as raw material, the one-step method can produce 30,000 tons of alcohol ether fuel per year. The average gas holdup of the reactor is 0.189, the mass of the catalyst is 12.38 tons, and the mass of the inert liquid-phase heat carrier is 23 tons. In the synthesis gas, the content of CO is 28%, H2 is 68%, and CO2 is 3% (volume). When the temperature is 250°C and the pressure is 5.0Mpa, the conversion rate of CO is 0.6667, and the annual output of dim...

Embodiment 2

[0045] use figure 1 The three-phase slurry bed reactor and figure 2 gas distributor.

[0046] in:

[0047] The diameter of the reaction part of the reactor is 3.25 meters, and the height is 23 meters. The diameter of the separation part is 3.9 meters, and the height is 7 meters. , the hole diameter is 1mm, y=2.5x, where x is the equivalent length of the reactor along the axial direction, and y is the equivalent heat transfer density of the heat exchanger along the axial direction;

[0048] Using synthesis gas as raw material, the one-step method can produce 300,000 tons of alcohol ether fuel per year. The average gas holdup of the reactor is 0.189, the mass of catalyst is 120 tons, and the mass of inert liquid-phase heat carrier is 230 tons. The CO content in the syngas is 28%, the H 2 68%, CO 2 When the temperature is 250°C and the pressure is 5.0Mpa, the conversion rate of CO is 0.67, the annual output of dimethyl ether is 280,000 tons, and the annual output of methano...

Embodiment 3

[0052] use figure 1 The three-phase slurry bed reactor and figure 2 gas distributor.

[0053]Among them: the diameter of the reaction part of the reactor is 1.45 meters, the height is 22 meters, the diameter of the separation part is 1.8 meters, and the height is 6 meters. degree angle, the diameter of the small hole is 1mm, y=2.0x, where x is the equivalent length of the reactor along the axial direction, and y is the equivalent heat transfer density of the heat exchanger along the axial direction;

[0054] Using syngas as raw material, F-T synthesis produces 30,000 tons of heavy hydrocarbon fuels per year, and the H in the syngas 2 / CO is 2.0, when the temperature is 220°C and the pressure is 2.5Mpa, the CO conversion rate reaches 84.88%, the selectivity of hydrocarbons, CH4 and CO2 are 99.63%, 5.47% and 0.37%, respectively, and the selectivity of heavy hydrocarbons is 88.16%.

[0055] Catalyst adopts self-made F-T synthesis catalyst, and the preparation method is as fo...

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Abstract

The invention discloses a three-phase slurry bed reactor for producing liquid fuel from syngas, which comprises: a reaction section with a cylindrical shell; The separation section of the shell-shaped shell, the ratio of the diameter of the separation section to the diameter of the reaction section is 1.5 to 1.2:1, and the ratio of the height is 0.2 to 0.5:1, and the heat exchange member arranged in the reaction section is arranged on The gas distributor connected to the gas inlet in the lower part of the reaction section is set at the liquid phase inlet on the cylindrical shell of the reaction section or the separation section, and the liquid phase product outlet is set on the cylindrical shell of the reaction section, and is set at the separation section Gas outlet on top. The three-phase slurry bed reactor of the present invention is easy to maintain the activity of the catalyst, has little wear of the catalyst, can be recycled for a long time, is not easy to cause catalyst deactivation, has simple internal components of the reactor, low manufacturing cost and easy operation.

Description

technical field [0001] The invention relates to a slurry bed reactor, in particular to a three-phase slurry bed reactor in which gas and liquid phases can continuously enter and exit oil products, and can also be used in other fields. Background technique [0002] With the large-scale production of F-T synthesis, dimethyl ether and alcohol ether fuels, the three-phase (gas-liquid-solid) slurry bed reactor has been developed unprecedentedly. Although there are many documents and patents to propose various types of three-phase slurry bed reactors, such as "A Continuously Operated Gas-Liquid-Solid Three-phase Slurry Bed Industrial Reactor" (authorized announcement number: CN 1233451C), "Three-phase chemical reactor" (authorized announcement number: CN 1174799C), etc., all there are various problems in the above-mentioned reactor. [0003] To sum up, the current three-phase slurry bed reactor has the following problems: [0004] (1) There is an obvious scale-up problem in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G5/00
Inventor 应卫勇李涛张海涛曹发海房鼎业
Owner EAST CHINA UNIV OF SCI & TECH
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