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

CO2 capture system and method with low emission of volatile organic pollutants

A technology with organic pollutants and low volatility, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as increased investment costs, increased water consumption, and unrealized pollutant control, and achieve improved recovery rates. , the effect of reducing emission levels, reducing temperature

Active Publication Date: 2022-06-28
ZHEJIANG ZHENENG TECHN RES INST
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent (CN111203086A) discloses CO 2 The pollutant control unit of the capture system reduces pollutant emissions by setting the water balance device and the secondary water washing device in series, but the secondary water washing device of the system leads to increased investment costs, increased water consumption, and the transfer of volatile gas phase pollutants to liquid phase pollutants, basically no pollutant control

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
  • CO2 capture system and method with low emission of volatile organic pollutants
  • CO2 capture system and method with low emission of volatile organic pollutants
  • CO2 capture system and method with low emission of volatile organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 of the present application provides a CO with low volatile organic pollutant emissions 2 The capture system includes an absorption tower 2, a lean-rich liquid heat exchanger 4, a regeneration tower 5 and a water washing tower 10; the absorption tower 2 is divided into a low temperature section 201 of the absorption tower and a high temperature section 202 of the absorption tower from bottom to top, and the lower part of the absorption tower 2 There is an absorption tower flue gas inlet 101, and the absorption tower flue gas outlet 102 at the top of the absorption tower 2 is connected to the flue gas inlet of the water washing tower 10; the rich liquid outlet at the bottom of the absorption tower 2 is divided into two paths, one through the lean and rich liquid heat exchange The device 4 is connected to the absorbent inlet of the high temperature section 502 of the regeneration tower, and the other way is directly connected to the absorbent inlet of the low t...

Embodiment 2

[0036] On the basis of Embodiment 1, Embodiment 2 of the present application provides a more specific CO emission with low volatile organic pollutants 2 The specific structure of each component of the capture system is as follows:

[0037] The absorption tower is divided into a low temperature section and a high temperature section from bottom to top. The upper part and the middle part of the tower are provided with absorbent inlets, which correspond to the absorbent inlets of the high temperature section and the low temperature section of the absorption tower respectively; In the tower, it is in countercurrent contact with the flue gas, and is discharged from the bottom of the tower to absorb CO 2 The rich liquid discharged from the bottom of the absorption tower is divided into the rich liquid main flow and the rich liquid split flow, the rich liquid main flow is sent to the cold side inlet of the lean rich liquid heat exchanger, and the rich liquid split flow is directly se...

Embodiment 3

[0048] The third embodiment of the present application provides a low volatile organic pollutant emission CO 2 The working method of the capture system includes the following steps:

[0049] S1, the flue gas passes through the low temperature section 201 of the absorption tower, the high temperature section 202 of the absorption tower and the water washing tower 10 in sequence, and then is evacuated, and the water washing tower 10 is provided with a circulating water washing liquid to carry out circulating water washing of the flue gas;

[0050] S2. The organic amine absorbent absorbs CO in the absorption tower 2 2 , the rich liquid 3 at the outlet of the absorption tower discharged from the bottom of the absorption tower 2 is divided into the rich liquid main flow 301 and the rich liquid split flow 302. The rich liquid main flow 301 is heated by the lean and rich liquid heat exchanger 4 and then sent to the high temperature section 502 of the regeneration tower. The liquid s...

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 present invention relates to low VOC emissions of CO 2 The capture system includes an absorption tower, a lean-rich liquid heat exchanger, a regeneration tower and a water washing tower; the absorption tower is divided into a low-temperature section of the absorption tower and a high-temperature section of the absorption tower from bottom to top, and the lower part of the absorption tower is equipped with an absorption tower flue gas inlet, The flue gas outlet of the absorption tower at the top of the absorption tower is connected to the flue gas inlet of the water washing tower; the rich liquid outlet at the bottom of the absorption tower is divided into two paths, one path is connected to the absorbent inlet of the high temperature section of the regeneration tower through a lean-rich liquid heat exchanger, and the other path It is directly connected to the absorbent inlet of the low-temperature section of the regeneration tower; the regeneration tower is divided into a low-temperature section of the regeneration tower and a high-temperature section of the regeneration tower from top to bottom, and the lean liquid outlet at the bottom of the regeneration tower is divided into three routes. The beneficial effect of the present invention is that: while the water washing tower is used to maintain the water balance of the system, the high temperature section of the absorption tower is used to improve the recovery rate of organic amine in the water washing tower and reduce the discharge level of volatile organic amine.

Description

technical field [0001] The invention belongs to flue gas CO 2 The field of capture technology, in particular to a low volatile organic pollutant emission CO 2 Capture systems and methods. Background technique [0002] Under the current goal of carbon neutrality in my country, it is urgent to develop large-scale carbon capture technology, especially for the largest fixed CO 2 Emission source - coal-fired power plant flue gas and industrial flue gas. Existing CO 2 Capture technologies include chemical absorption, solid adsorption, membrane separation, etc. Among them, chemical absorption is currently the only large-scale capture of flue gas CO. 2 technical route. [0003] Weakly basic organic amine solution is the most mature CO chemical absorption technology 2 Absorbents, such as ethanolamine (MEA) aqueous solutions with a mass concentration of 20%-30%, have been applied to the flue gas CO of million-ton / year coal-fired power plants 2 Capture engineering device. Accor...

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 Patents(China)
IPC IPC(8): B01D53/18B01D53/14
CPCB01D53/18B01D53/1475B01D53/1418B01D53/1406B01D53/1412B01D53/1425Y02C20/40
Inventor 刘飞祁志福孙士恩申震厉宸希方梦祥
Owner ZHEJIANG ZHENENG TECHN RES INST