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Integrated suspension bed inorganic membrane reactor

An inorganic membrane and suspended bed technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of reducing the effective space of the reactor, affecting the permeation efficiency of the membrane, and increasing the investment cost, so as to improve the membrane separation performance and reduce the Equipment investment and operating costs, and the effect of preventing deposition

Active Publication Date: 2006-12-13
NANJING TECH UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the suspended materials in the reactor are easy to deposit or stay around the membrane module, which affects the membrane permeation efficiency, the membrane flux is relatively small. Generally, it is necessary to increase the area of ​​the membrane to ensure the flow rate of the filtrate, which reduces the reactor capacity to a certain extent. The effective space also increases the investment cost

Method used

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  • Integrated suspension bed inorganic membrane reactor
  • Integrated suspension bed inorganic membrane reactor
  • Integrated suspension bed inorganic membrane reactor

Examples

Experimental program
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Effect test

example 1

[0012] figure 1 In the example, the integrated suspended bed inorganic membrane reactor has a reactor 6, a top cover 2, and a sealing gasket 4 is added therebetween. The reactor is provided with a material inlet pipe 5, a material outlet pipe 11, and a filtrate outlet pipe connected to a vacuum pump 21. 20. A set of inorganic membrane separation components consisting of two (or more) inorganic membrane tubes 12 and their support frames are installed in the kettle. The membrane tube support frames are formed by connecting upper and lower metal support plates 10 and 13 through bolts. The two ends of the membrane tube 12 are padded with graphite gaskets 15, which are fixed through the socket holes of the metal support plates 10 and 13. The lower end of the inorganic membrane tube is sealed by the circular metal plate 10, and the upper end is connected with the circular liquid collecting container 14. Pass. The circular collecting container 14 is connected with the filtrate outle...

example 2

[0015] figure 2 In the example, two groups of inorganic membrane modules are arranged in the reaction kettle 6, each group contains several membrane tubes 12, the upper end of the membrane tube is closed, and the lower end communicates with the liquid collecting container 14, and each liquid collecting container 14 is connected with the filtrate outlet pipe 20 ; In this example, the shafts 17 of the two turbulent flow promoters 16 are connected with the agitator 1 to engage the gear set 9 . Mesh gear set can be located outside the top cover, also can be located in the reactor 6.

[0016] image 3 It shows that the upper end of the cylindrical turbulence promoter 16 is provided with an internal thread port, and is connected with the rotating shaft 17 through it.

[0017] Figure 4 Represents a helical turbulence promoter 16, whose upper end can be connected with the rotating shaft 17 by welding.

Embodiment 2

[0019] Membrane flux test 1

[0020] On this device, the membrane filtration enhancement effect was investigated for the titanium-silicon molecular sieve catalyst suspension with an average particle size of 428nm. The basic filtration conditions are: an alumina ceramic membrane with an average pore size of 0.5 μm, a transmembrane pressure of 0.2 atm, a suspension temperature of 20 °C, and a suspension concentration of 5 g L -1 . The results show that for the titanium-silicon molecular sieve catalyst suspension, the membrane flux when the turbulent flow promoter rotates at 400 rpm is 2.5 times the membrane flux when the turbulence promoter rotates at 50 rpm.

[0021] Membrane flux test 2

[0022] On this device, the membrane filtration enhancement effect was investigated for the zirconia suspension with an average particle size of 475nm. The basic filtration conditions are: an alumina ceramic membrane with an average pore size of 0.5 μm, a transmembrane pressure of 0.2 atm, ...

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Abstract

An integrated suspension-bed reactor with inorganic membrane for the reaction between multiple phases of material and the solid-liquid separation features that its reaction still has internal stirrer and inorganic membrane as the separating unit with several membrane tubes which has a closed end and an open end communicated with filtrate outlet tube. A turbulence promoter with a rotary axle is arranged outside said separating unit.

Description

(1) Technical field [0001] The invention relates to an integrated suspended bed inorganic membrane reactor, which is used for the chemical reaction and solid-liquid separation process of suspended materials, and belongs to chemical equipment. (2) Background technology [0002] Suspended bed reactor is a common reaction equipment in chemical production. It is suitable for liquid-solid reaction, liquid-liquid-solid reaction, gas-liquid-solid reaction, where the solid-phase reactant or catalyst is fine suspended particles or the reaction generates fine suspended particles. , For example, the catalytic reaction of a suspended solid catalyst, the hydrolysis of titanium compounds to generate fine suspended particles of titanium dioxide, etc. are all suspended bed reactions. After the completion of these reaction processes, it is often necessary to follow the solid-liquid separation process of the material to separate the catalyst particles and continue to participate in the next r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/10
Inventor 徐南平张利雄陈日志
Owner NANJING TECH UNIV
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