Immersion fixed bed reactor intensified by liquid flow

Patent metadata

Field	Value
Publication number	US-9884304-B2
Application number	US-201214361572-A
Country	US
Kind code	B2
Filing date	May 25, 2012
Priority date	Dec 16, 2011
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

An immersion fixed bed reactor intensified by liquid flow contains a cylindrical tank internally installed with an annular cylindrical catalyst bed (ACCB) packed with solid catalysts is provided. The inner and outer walls of the ACCB are composed of two layers of stainless steel sheets with holes. The outer layer of stainless steel perforated with holes. The inner layer of catalyst contacting stainless steel is covered with stainless steel waved mesh in circumferential direction. The bottom of AACB is sealed with a steel plate by welding or a blind plate and the top of ACCB is fixed to cylindrical tank with a flange. The solid catalysts are packed in the ACCB.

First claim

The invention claimed is:

1. An immersion fixed bed reactor intensified by liquid flow, comprising:
a cylindrical tank internally installed with an annular cylindrical catalyst bed (ACCB) packed with solid catalysts, the ACCB including an inner wall and an outer wall that are composed of two layers of stainless steel sheets with a plurality of holes, the outer layer of stainless steel is 3-20 mm thick and is perforated with diameter of 3-10 mm holes, the inner layer of catalyst contacting stainless steel is 0.1-3 mm thick and is covered with a stainless steel waved mesh in a circumferential direction and a distance between peak and valley is 3-20 mm, a top and a bottom of the ACCB being sealed with circular blind plates, and the solid catalysts are packed in a space between the inner wall and outer walls of the ACCB,
wherein the cylindrical tank is equipped with a reaction mass inlet duct at a top and a mass outlet duct at a bottom and the mass outlet duct is connected with a liquid circulating pump, a liquid outlet duct valve, a flow meter, a heat exchanger and a normal tube inlet inserting into a central column space of the ACCB at an axial position through the top of the ACCB, and enables the liquid is pumped by the liquid circulating pump into the central column space of the ACCB and radically pass through the catalyst bed of the ACCB into a space between the cylindrical tank and the ACCB.

2. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the distance between peak and valley of the inner steel plate wave of the ACCB is 3-12 mm.

3. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the ACCB is connected with the inner wall of cylindrical tank via bolts and lugs, so as to be easily dismantled and removed from cylindrical tank for the alteration of catalyst.

4. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the distance of the inner wall and the outer walls of the ACCB is 10-10.00 mm.

5. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the distance of the inner wall and outer walls of the ACCB is 30-50 mm.

6. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the top blind plate of the ACCB is connected with flanges, and the bottom blind plate of the ACCB is connected with flanges or by welding.

7. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the area of the outer layer of the inner and outer walls of the ACCB is 50%-95%, and the layer of stainless-steel sheet supports the inner layer of stainless steel waved mesh, the whole area of the inner wavy stainless steel mesh is 60-90%, smaller than the outer layer area, and this layer is to block the leakage of solid catalyst particles.

8. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein if it is gas-liquid-solid reaction system, the normal tube inlet is substituted by a jet inlet, which has a vacuum inlet allowing the surrounding gas or mass vapor sucked and mixed with the liquid into the central column space of the ACCB, then radially flows together with liquid reactants through the catalyst bed of the ACCB into the annular space between the cylindrical tank and the ACCB.

9. The immersion fixed bed reactor intensified by liquid flow according to claim 8 , wherein the vacuum inlet of the jet inlet is connected to the outlet of the cylindrical tank and the gas reactant is added through the gas inlet and the gas distributor.

10. The immersion fixed bed reactor intensified by liquid flow according to claim 1 , wherein the distance between peak and valley is 5-12 mm.

11. The immersion fixed bed reactor intensified by liquid flow according to claim 4 , wherein the distance of the inner wall and the outer walls of the ACCB is 50-500 mm.

Assignees

• Zhou Zheng
• Zhang Zhibing
• Yang Gaodong
• Dai Yue
• Wu Pingkeng
• Liu Xiaojuan
• Nanjing University

Inventors

• Zhou Zheng
• Zhang Zhibing
• Yang Gaodong
• Dai Yue
• Wu Pingkeng
• Liu Xiaojuan

Classifications

• B01J2208/00176

  outside the reactor · CPC title

• B01J2219/0286

  Steel · CPC title

• B01J2208/00902

  Nozzle-type feeding elements · CPC title

• B01J8/008

  Details of the reactor or of the particulate material; Processes to increase or to retard the rate of reaction (B01J8/0285, B01J8/067, B01J8/087, B01J8/1836 take precedence) · CPC title

• B01J8/067 Primary

  Heating or cooling the reactor (B01J8/062 takes precedence) · CPC title