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目前控制烟气NOx排放的措施有哪些?

首页- 新闻资讯 > 行业资讯 > 2022-07-13

目前控制烟气NOx排放的措施大致分为3类:一类是低NOx燃烧技术,其技术的主要特征是采用燃烧优化、空气和燃料的分级燃烧、烟气

At present, the measures to control flue gas NOx emission are roughly divided into three categories: one is low NOx combustion technology, which is mainly characterized by combustion optimization, staged combustion of air and fuel, and flue gas
再循环以及低NOx燃烧器等多种型式,控制燃烧区域的温度、过剩空气量及燃料量,抑或还原燃烧过程中生成的NOx,从而降低NOx
Recirculation and low NOx burners control the temperature of the combustion area, the amount of excess air and fuel, or reduce NOx generated in the combustion process, so as to reduce NOx
排放,该技术措施一般可以降低NOx排放浓度的30%~60%:另一类是烟气净化技术,zui为典型的烟气净化是选择性催化剂脱硝法(即SCR),
Emission, this technical measure can generally reduce the NOx emission concentration by 30% - 60%. The other is flue gas purification technology. Zui is a typical flue gas purification method, namely selective catalyst denitration (SCR),
其脱硝效率可达80%~90%;第三类是炉膛喷射脱硝技术(即SNCR),其技术的主要特征是在炉膛上部的某一特定区域喷射还原剂,使
Its denitration efficiency can reach 80% - 90%; The third type is furnace spray denitration technology (SNCR), which is mainly characterized by spraying reductant in a specific area on the upper part of the furnace to make
其在一定的温度条件下还原已生成的NOx,较典型的喷射物质是炉膛喷氨.氨与烟气中的NOx在950~1050℃这一狭窄的温度
It reduces the generated NOx under certain temperature conditions, and the typical injection material is furnace ammonia injection Ammonia and NOx in flue gas are at a narrow temperature of 950 ~ 1050 ℃
范围内发生反应,生成氮气和水,NOx降低率一般为30%70%,该技术投资少,运行费用也低J。
The reaction takes place within the range to generate nitrogen and water, and the NOx reduction rate is generally 30% to 70%. The investment of this technology is small, and the operation cost is also low J.
如何选择适合于自己工程的脱硝工艺,应主要从以下几个方面综合考虑:
How to choose the denitration process suitable for your own project should be comprehensively considered from the following aspects:
(1)NOx排放浓度和排放量必*满足排放标准及有关环境保护的要求:
(1) NOx emission concentration and emission must * meet the emission standards and relevant environmental protection requirements:
(2)脱硝工艺要适用于本工程已确定的燃料条件,并考虑燃料来源的变化可能性;
(2) The denitration process shall be applicable to the determined fuel conditions of the project, and the possibility of changes in fuel sources shall be considered;
(3)脱硝丁艺技术成熟、设备运行可靠,并有较多成功的运行业绩:
(3) Denitration Dingyi has mature technology, reliable equipment operation, and more successful operation performance:
(4)脱硝装置占地面积小,投资费用省;
(4) The denitration device covers a small area and saves investment costs;
(5)脱硝剂要有稳定可靠的来源:
(5) The denitration agent should have a stable and reliable source:
(6)运行、检修和维护费用小。
(6) The operation, overhaul and maintenance costs are small.
以上就是为大家介绍的有关干法脱硫的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系海洋之神app.海洋之神app将以专业的态度,为您提供服务.http://www.hdtvorigin.com
The above is a detailed introduction about dry desulfurization, which I hope will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.hdtvorigin.com

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