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

Desulfurization and denitration method of pelletizing flue gas

A desulfurization, denitrification and pelletizing technology, which is applied in the field of pelletizing flue gas desulfurization and denitrification, can solve the problems of secondary pollution and high operating costs

Pending Publication Date: 2019-04-05
马广伟
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is the technical problem of high operating cost and secondary pollution in the existing coking plant pelletizing flue gas treatment process. A method for desulfurization and denitrification of pelletizing flue gas is provided. The processing method has a process flow Short, low equipment investment, simple regeneration, low energy consumption, no secondary pollution

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
  • Desulfurization and denitration method of pelletizing flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1.6 million cubic meters of flue gas at 145°C, with a nitrogen oxide content of 500mg / m 3 , the sulfide content is 200 mg / m 3 , enter the self-heat exchanger, and exchange heat with the cold flue gas entering the chimney, and the temperature is reduced to about 110°C; the flue gas at 110°C is cooled to 50°C by spraying, and the spray water is recycled, and after part of the waste water is neutralized, De-biochemical system; the cooled flue gas enters the adsorption tower after passing through the demisting equipment; three adsorption towers of 200m³ are used, two open and one standby, and each adsorption tower is filled with 120m 3 Microcrystalline material, total 360 m 3 Microcrystalline material mordenite; the adsorption tower has a diameter of 4.8 meters and a height of 12.0 meters; after the flue gas removes sulfides and nitrogen oxides, it enters the self-heat exchanger, and after heat exchange with the hot flue gas, it reaches above 100°C and enters the chimney ...

Embodiment 2

[0043] The specific implementation is as attached figure 1 The shown device process, 1.5 million cubic meters of flue gas at 180°C, the nitrogen oxide content is 400mg / m 3 , the sulfide content is 100 mg / m 3 , enter the self-heat exchanger, and exchange heat with the cold flue gas entering the chimney, and the temperature is reduced to about 120°C; the flue gas at 120°C is cooled to 40°C by spraying, and the spray water is recycled, and after part of the waste water is neutralized, Biochemical removal system; the cooled flue gas passes through the demisting equipment and enters the adsorption tower; three 200m 3 The adsorption tower, two open and one standby, each adsorption tower is filled with 120m 3 Microcrystalline material, total 360 m 3 Microcrystalline material ZSM-5 molecular sieve; the specification of the adsorption tower is 4.8 meters in diameter and 12.0 meters in height; after the flue gas removes sulfide and nitrogen oxides, it enters the self-heat exchanger, ...

Embodiment 3

[0045] The specific implementation is as attached figure 1 The shown device flow, 1.4 million cubic meters of flue gas at 140°C, the nitrogen oxide content is 450mg / m 3 , the sulfide content is 200 mg / m 3 , enter the self-heat exchanger, and exchange heat with the cold flue gas entering the chimney, and the temperature is reduced to about 110°C; the flue gas at 110°C is cooled to 50°C by spraying, and the spray water is recycled, and after part of the waste water is neutralized, Biochemical removal system; the cooled flue gas passes through the demisting equipment and enters the adsorption tower; three 200m 3 The adsorption tower, two open and one standby, each adsorption tower is filled with 120m 3 Microcrystalline material, total 360 m 3 Microcrystalline material ZSM-5 molecular sieve; the specification of the adsorption tower is 4.8 meters in diameter and 12.0 meters in height; after the flue gas removes sulfides and nitrogen oxides, it enters the self-heat exchanger, an...

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 relates to a desulfurization and denitration method of pelletizing flue gas and mainly solves the problem that existing pelletizing flue gas desulfurization and denitration are high in operation cost and generate secondary pollution. Nitrogen oxide and sulfide in the pelletizing flue gas are removed by adopting an adsorption method, and nitrogen oxide and sulfide in regenerated fluegas are used for salt production, in this way the above problem is solved well. The method can be used in industrial production of [1] desulfurization and denitration.

Description

technical field [0001] The invention belongs to the technical field of desulfurization and denitrification, and in particular relates to a technical method for desulfurization and denitrification treatment of pellet flue gas in the iron and steel industry, that is, a method for desulfurization and denitrification of pellet flue gas. Background technique [0002] SO 2 and NO X Both are important air pollutants in my country. Excessive emissions will cause smog, acid rain and photochemical smog, which seriously endanger the ecological environment and human health. The combustion of fossil fuels is SO 2 and NO X main source of . Coal is the most important natural energy in my country. As the second largest coal-consuming field in China, coal coking is one of the main pollution sources in the field of industrial coal use, and pellet flue gas is an important pollution source of the atmosphere. [0003] At present, wet desulfurization technology and semi-dry desulfurization t...

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
IPC IPC(8): B01D53/86B01D53/56B01D53/48B01D53/50B01D53/78B01D53/02B01D46/00F23J15/06F23J15/04F23J15/08
CPCB01D46/0036B01D53/02B01D53/48B01D53/502B01D53/78B01D53/8628B01D2251/102B01D2251/104B01D2251/106B01D2255/104B01D2255/2061B01D2255/2063B01D2255/2065B01D2255/20761B01D2255/502B01D2255/504B01D2257/206B01D2257/30B01D2257/40B01D2258/0283B01D2259/40092F23J15/04F23J15/06F23J15/08
Inventor 宋恩博张燎原马广伟
Owner 马广伟