Slurry bubble columun reactor having internal circulation and external heat-exchanging and the application

A slurry bed, internal circulation technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of uneven solid suspension, space velocity can not be too large, catalyst separation, etc., to achieve convenient removal of reaction heat, The effect of low energy consumption and high space-time yield

Active Publication Date: 2009-07-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a certain limit to the amount of catalyst loaded in this slurry reactor, so the space velocity in operation should not be too large
[0005] At the same time, the bottleneck of the current three-phase slurry bed lies in the uneven suspension of solids and the separation of catalysts.
When the amount of catalyst suspension in the slurry bed reactor is too large, catalyst sedimentation and agglomeration will occur

Method used

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  • Slurry bubble columun reactor having internal circulation and external heat-exchanging and the application
  • Slurry bubble columun reactor having internal circulation and external heat-exchanging and the application
  • Slurry bubble columun reactor having internal circulation and external heat-exchanging and the application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] use figure 1 the reactor and figure 2 orifice gas distributor.

[0047] The effective diameter of the three-phase slurry bed reactor is 3.2m, the effective height is 10m, the orifice diameter of the orifice gas distributor is 10mm, the gas velocity at the orifice outlet is 180m / s, and there are 3 layers of filters built in.

[0048] The diameter of the orifice 7 is 3mm, and the opening ratio is 0.33%;

[0049]The distance H from the bottom of the reactor to the impact plate 3 1 200mm;

[0050] The diameter of the gas inlet pipe 1 is 80 mm; the distance H from the bottom of the reactor to the impact plate 3 1 200mm;

[0051] The shape of the impact bottom plate 3 is arc-shaped, and the arc is 135°;

[0052] The diameter of air guide tube 4 is 80mm;

[0053] Said filter is a metal mesh with a pore size of 0.01mm.

[0054] Taking methanol synthesis with an annual output of 300,000 tons as an example, the raw material gas consists of H 2 = 68%, CO = 27%, CO 2 = 3...

Embodiment 2

[0057] use figure 1 the reactor and Figure 4 The orifice gas distributor is used to obtain related hydrocarbon products from the synthesis gas through Fischer-Tropsch synthesis.

[0058] The effective diameter of the three-phase slurry bed reactor is 3m, the effective height is 12m, the orifice diameter of the orifice gas distributor is 2mm, the gas velocity at the orifice outlet is 150m / s, and 4 layers of filters are built in.

[0059] The diameter of the orifice (7) is 2mm, and the opening rate is 0.13%; the distance H from the bottom of the reactor to the impact base plate (3) 1 is 150mm; the diameter of the gas inlet pipe (1) is 60mm; the distance H from the bottom of the reactor to the impact bottom plate (3) 1 The impact base plate (3) is arc-shaped in shape with a radian of 150°; the diameter of the air duct (4) is 60mm; said filter is a metal mesh with an aperture of 0.001mm. Raw gas composition CO / H 2 =3 / 2, the pressure of the synthesis gas entering the three-pha...

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Abstract

The invention discloses a slurry bed reaction device with internal circulation and external heat exchange and its application. Comprising a tower-type gas-liquid-solid three-phase slurry bed reactor (12) with a cylindrical shell, a tubular filter (11) vertically arranged in said reactor (12), an orifice gas distributor, a heat exchange device (107) and circulation pump (106). The device of the invention can be used for the reaction of synthesis gas to generate gas or liquid fuel in the presence of catalyst and liquid inert medium. In the present invention, there is an internal gas circulation at the bottom of the reactor, the catalyst is separated on-line inside the reactor, and the fluid carrying effect is used to form internal circulation and external heat exchange inside and outside the reactor, which can effectively prevent the catalyst from settling and promote The catalyst is evenly distributed in the axial direction of the reactor and the temperature distribution in the tower is improved, the space-time yield is high, the reaction heat is conveniently removed, the energy consumption is low, and it is easy to realize large-scale.

Description

technical field [0001] The invention relates to a three-phase slurry bed reactor, in particular to a three-phase slurry bed reactor type with internal circulation of gas and external heat exchange of slurry for preparing hydrocarbons by using syngas as raw material. Background technique [0002] Said synthesis gas is produced from hydrocarbons such as coal, natural gas and petroleum, and is represented by H 2 , CO, CO 2 As the main component, it is widely used in national economic sectors such as chemical industry, pharmaceutical industry, light textile civil industry and transportation industry. [0003] The production of gas or liquid fuel from syngas is usually carried out in the presence of a catalyst in a three-phase slurry bed, and the heat generated by the reaction is absorbed by the inert liquid medium, so the reaction can be carried out isothermally. [0004] The three-phase slurry bed reactor is widely used in the chemical process. There are many reports in exis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00B01J8/22
Inventor 王亦飞于遵宏苏宜丰于广锁龚欣王辅臣刘海峰周志杰代正华王兴军李建辉
Owner EAST CHINA UNIV OF SCI & TECH
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