A coke oven regenerator waste heat utilization and sncr/scr coupling denitrification method and device
A regenerator and SCR catalyst technology is applied in the field of coke oven regenerator waste heat utilization and SNCR/SCR coupling denitrification, which can solve the problems of energy consumption, high investment in SCR denitrification equipment operation, and high nitrogen oxide concentration emissions, reducing the The effect of energy consumption and operation investment cost, denitration efficiency improvement, and simple process structure
Active Publication Date: 2020-09-11
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0005] In order to solve the above-mentioned problems of high concentration of nitrogen oxides in coke oven flue gas, additional energy consumption of SCR denitrification process and high investment in operation of SCR denitrification equipment, the present invention provides a denitrification method for coke oven regenerator waste heat utilization and SNCR / SCR coupling With the device, the invention can effectively reduce the concentration of nitrogen oxides to meet the national emission standards, and reduce the cost of the denitrification system without adding heating equipment
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[0020] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0021] The invention provides a coke oven regenerator waste heat utilization and SNCR / SCR coupled denitrification method and device.
[0022] Such as figure 1 , figure 2 , image 3 As shown, the device includes checker brick channel 1, regenerator single wall 2, spray gun 3, ammonia injection pipe 4, ammonia injection space 5, checker brick hole wall 6, SCR catalyst section 7, and spray gun installation hole 8, among which checker brick Channel 1, ammonia injection space 5, checker brick hole wall 6 are arranged sequentially from top to bottom, regenerator single wall 2 is located outside checker brick channel 1, ammonia injection pipeline 4 is located in regenerator single wall 2, ammonia injection pipeline 4 The end of the nozzle is connected with ...
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The invention relates to a coke oven regenerative chamber waste heat utilization and SNCR / SCR coupling denitration method and device. The method comprises a waste heat utilization and SNCR coupling denitration method, waste heat utilization and SCR coupling denitration method and an SNCR denitration and SCR denitration coupling method, and the coke oven regenerative chamber waste heat utilizationand SNCR / SCR coupling denitration device is included. In a generative chamber, a proper temperature area is selected as an ammonia spraying space, ammonia is sprayed into the ammonia spraying space through a spray gun, an SNCR denitration reaction is performed, a proper temperature area is selected below the ammonia spraying space, an SCR catalyst is arranged in the temperature area, and residualammonia and nitric oxide in flue gas are subjected to an SCR denitration reaction. Accordingly, flue gas waste heat utilization and a denitration technology are coupled, the technological structure issimple, checker bricks are replaced easily, and equipment such as an SCR flue gas denitrating tower is not needed; compared with a traditional SCR denitration system, energy consumption and operationand investment capital are lowered, and the denitration efficiency is significantly improved.
Description
technical field [0001] The invention relates to the field of coke oven flue gas waste heat utilization and denitrification, in particular to a coke oven regenerator waste heat utilization and SNCR / SCR coupled denitrification method and device. Background technique [0002] Coking is a highly polluting industry, and the pollutants discharged into the atmosphere during the production process include particulate matter, SO 2 , NOx, CO, H 2 S, NH 3 , benzopyrene, phenol, etc., the harm caused by various pollutants has aroused widespread concern from all walks of life. According to statistics, in 2015 the national SO 2 The total emission is 18.591 million tons, and the total NOx emission is 18.518 million tons. Coal coking is one of the main sources of pollution in the field of industrial coal, coke oven flue gas is the most important source of exhaust gas pollution in coking enterprises, about 60% of SO 2 And 90% of NOx comes from this. According to the data of the China C...
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IPC IPC(8): B01D53/56B01D53/75B01D53/76B01D53/86
CPCB01D53/56B01D53/75B01D53/76B01D53/8625B01D2251/2062B01D2258/0283
Inventor 冯俊小赵玉杰徐钱
Owner UNIV OF SCI & TECH BEIJING