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Disk-type assembled bagged catalytic distillation filler

A catalytic rectification, disc technology, applied in fractionation, distillation separation, chemical instruments and methods, etc., can solve the problems of complex processing technology, difficult to meet the requirements of catalytic rectification packing at the same time, etc., to increase the reaction flux and stitch size. Adjustable and improve the effect of utilization

Pending Publication Date: 2017-08-18
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the catalytic rectification filler in the existing reactive distillation technology is difficult to meet the requirements of the reaction process and the separation process at the same time, and the processing technology is complicated

Method used

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  • Disk-type assembled bagged catalytic distillation filler
  • Disk-type assembled bagged catalytic distillation filler
  • Disk-type assembled bagged catalytic distillation filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the process of synthesizing methyl acetate with dilute acetic acid under the action of NKC-9, the catalyst package is sewn with corrosion-resistant materials, the catalyst particle size is 1mm, and the stitching size between adjacent sutures of the catalyst package is 20mm. The rate of the catalytic distillation process is controlled by the surface reaction rate. The number ratio of the catalyst package to the structured packing sheet is 1:1. The component B in the catalytic rectification packing adopts window diversion packing, and the packing sheets are stacked in parallel under the catalyst package. , And curled into shape. The tower diameter is DN1000, no need to rotate when installing the upper and lower packing trays. The reaction section is equipped with 8 trays of packing. Compared with the use of ordinary strapping type catalytic distillation packing, the use of the catalytic rectification packing of the present invention has uniform radial distribution, red...

Embodiment 2

[0034] In the chlorosilane disproportionation reaction rectification device, the catalyst package is sewn with nylon cloth, the catalyst is the anti-disproportionation catalyst SA66, and the stitching size between adjacent sutures of the catalyst package is 50mm. This catalytic rectification process requires a high degree of coupling between the reaction process and the rectification process. In order to increase the liquid holding capacity of each disk packing, the ratio of the catalyst package to the structured packing is 1:2, and the component B in the catalytic rectification packing is adopted The window diversion packing, the packing sheet is evenly distributed on the upper and lower layers of the catalyst pack, stacked parallel to the catalyst pack and rolled into shape, as attached figure 1 with 2 Shown. The tower diameter is DN1200, the upper and lower packing trays do not need to be rotated when installing, the reaction section is equipped with 10 trays of packing, the ...

Embodiment 3

[0036] In the MTBE (Methyl Tertiary Butyl Ether) device, the catalyst package is sewn by nylon cloth, the catalyst particle size is 0.5mm, and the stitching size between adjacent sutures of the catalyst package is 15mm. This catalytic distillation process is controlled by the reaction rate and the mass transfer rate between the gas and liquid phases. The number ratio of the catalyst package and the structured packing is 1:5. The component B in the catalytic distillation packing adopts the window diversion packing. The number of the lower layer of the catalyst package is one more than the number of the upper layer. image 3 Shown. The diameter of the tower is DN800, and the upper and lower packing trays rotate 90° when installed. The reaction section is equipped with 10 trays of packing. In order to make the gas-liquid two-phase distribution in the tower more evenly, a 25cm-high ordinary packing is installed between the fifth and sixth trays. The use of the catalytic distillat...

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Abstract

The invention relates to a disk-type assembled bagged catalytic distillation filler, which structurally comprises an assembly A and an assembly B, wherein the assembly A is a rectangular catalyst bag formed through seaming and is filled with catalyst particles; the assembly B is a regular filler sheet; and the regular filler sheet of the assembly B and the catalyst bag of the assembly A are tightly stacked in parallel and are curled into a disk-type spiral structure and then fixed by using a banding sheet to form the catalytic distillation filler. The catalyst bag is adjustable in seaming size, the loading density of the catalyst is adjustable, the content of the catalyst is adjusted and the utilization rate of the catalyst is improved. The assembly A and the assembly B are alternately arranged, so that flowing of a liquid is improved by the regular filler sheet, uniform distribution of gas and liquid phases is ensured, a reactant and a product are continuously separated to the tower top and the tower bottom, the mass transfer process is promoted and the reaction rate is improved. The catalytic distillation filler is of the disk-type spiral structure and the catalyst bag and the regular filler sheet are arranged at an interval, so that uniform distribution of gas and liquid phases is improved, and meanwhile, the pressure drop can be reduced.

Description

Technical field [0001] The invention is a disc-assembled bagged catalytic distillation filler, belonging to the category of catalytic distillation technology in the chemical industry, and particularly relates to process optimization and strengthening in a catalytic distillation tower. Background technique [0002] The catalytic distillation process is a highly coupling of catalytic reaction and distillation process. It is to introduce catalyst into the distillation tower. In the catalytic distillation process, the solid catalyst not only acts as a catalyst to accelerate the chemical reaction, but also acts as a packing or tower internals to provide a mass transfer surface. Therefore, the packing in the tower must have both catalysis and gas-liquid mass transfer functions. After the raw material undergoes catalytic reaction in the tower, the product can be continuously removed to promote the reaction to continue, so that the catalytic distillation process has a higher production c...

Claims

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Application Information

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IPC IPC(8): B01J19/30B01J8/02B01D3/16B01D3/00
CPCB01D3/009B01D3/16B01J8/02B01J19/30B01J2219/302B01J2219/30219
Inventor 刘春江李丹王义成冷东斌吕晓东李玥郑龙云
Owner TIANJIN UNIV
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