Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for improving pressure-swing-adsorption gas separation yield and purity

A pressure swing adsorption and gas separation technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc. Small investment and small footprint, wide application effect

Inactive Publication Date: 2004-09-01
王玉
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution can increase the yield of difficult-to-adsorb components by 3-10%, and increase the purity of easily-adsorbed components by 5-10%, the recovery system requires more equipment, so the energy consumption is large, and the investment and The area is also larger

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for improving pressure-swing-adsorption gas separation yield and purity
  • Method and device for improving pressure-swing-adsorption gas separation yield and purity
  • Method and device for improving pressure-swing-adsorption gas separation yield and purity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This example is an example of using pressure swing adsorption to separate shift gas in methanol production.

[0023] Such as Figure 4 As shown, the conventional pressure swing adsorption system of the device in this embodiment is composed of 8 parallel-connected adsorption towers A1-A8 and two pressure equalization towers J1, J2, and the recovery system is composed of a compression mechanism 12. In the recovery system, the inlet of the compression mechanism 12 is directly connected to the recovery pipeline 10 at the top of each adsorption tower in the conventional pressure swing adsorption system, and the gas outlet of the compression mechanism 12 is directly connected to the product gas of the difficult-to-adsorb component of the conventional pressure swing adsorption system. 1 output pipeline 9 is connected.

[0024] A1

adsorption

A2

an average drop

Second to fourth average pressure drop

five average drop

Recycle

A3

Re...

Embodiment 2

[0037] This embodiment is an example of separating semi-water gas by pressure swing adsorption.

[0038] Such as Figure 5 As shown, the pressure swing adsorption system of the device in this embodiment is composed of five parallel-connected adsorption towers A1-A5, a vacuum buffer tank C, and four pressure equalizing towers J1, J2, J3, and J4, and the recovery system is composed of recovery The regulating valve V and the compression mechanism 12 are composed. In the recovery system, the inlet of the compression mechanism 12 is connected to the recovery pipeline 10 at the top of each adsorption tower in the conventional pressure swing adsorption system through the recovery regulating valve V, and the gas outlet of the compression mechanism 12 is directly connected to the pipeline 9 of the product gas 1 .

[0039] The raw material semi-water gas pressure of the present embodiment is gauge pressure 1.6MPa, and the pressure swing adsorption flow process that adopts is 5-1112-41...

Embodiment 3

[0052] This embodiment is an example of separating water gas by pressure swing adsorption.

[0053] Such as Figure 6 As shown, the pressure swing adsorption system of the device in this embodiment is composed of five parallel-connected adsorption towers A1-A5, a vacuum buffer tank C, and four pressure equalizing towers J1, J2, J3, and J4, and the recovery system is composed of recovery Regulating valve V is composed of sequentially connected compression mechanism 12 and air storage tank 13 . In the recovery system, the air inlet of the compression mechanism 12 is connected to the recovery pipeline 10 at the top of each adsorption tower in the conventional pressure swing adsorption system through the recovery regulating valve V, and the gas outlet of the compression mechanism 12 is connected to the air inlet of the gas storage tank 13. The gas outlet of the gas storage tank 13 is directly connected with the forward pressure pipeline 11 at the bottom of each adsorption tower i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and device to heighten gas separation yield and purity by variable-pressure absorption. After one absorbing tower in routine variable- pressure absorbing system completes final equal-pressure buck procedure, it directly outputs remaining gas in the absorbing tower as product through recovery system or compresses the remaining gas in gas-storage holder of the recovery system, when another absorbing tower completes equal-pressure boost procedure for the first time, it uses the remaining gas as forward pressurizing gas to return in the absorbing tower, making the remain gas as gas product output from the top of the absorbing tower at once when the next absorbing process begins, thus going round and round to complete recovery process and heightening easy-absorbing component purity exhausted of the absorbing tower. It can not only raise the yield of difficult-absorbing component by 3-10% and that of east-absorbing component by 5-10%, but also omit some device in existing recovery systems. It can be applied in the variable-pressure field of separating various gases.

Description

1. Technical field [0001] The invention belongs to the technical field of pressure swing adsorption gas separation, and in particular relates to a method and a device for improving the separation yield and purity of pressure swing adsorption gas. 2. Background technology [0002] At present, in the relatively mature field of pressure swing adsorption gas separation technology, the pursuit of higher product gas yield and purity has always been the goal of scientific research and engineering technicians, including manufacturers. The existing pressure swing adsorption gas separation technology usually adopts comprehensive means such as vacuum desorption, canceling flushing with product gas 1 and multiple pressure equalization to improve the yield and purity of pressure swing adsorption gas separation, such as Chinese patent ZL 97 1 07640.5, 88105938.2. However, due to the limited number of pressure equalization times, when the adsorption pressure is high, even after multiple p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047
Inventor 王玉
Owner 王玉