水泥熟料生产线SNCR烟气脱硝工艺设计

摘要：根据某1000 t/d水泥熟料生产线的现状和工艺要求，完成烟气脱硝工程中水泥窑选择性非催化还原（SNCR）脱硝系统设计，制定相应的SNCR烟气脱硝系统配置方案，还原剂采用20~25%氨水（质量分数）。针对每条水泥窑生产线分解炉型号，燃烧性质和工况特点进行仿真模拟，理论结合工程实际经验，确保为以项目量身定制最优的设计，最终满足水泥窑尾烟囱处氮氧化物排放初始浓度范围为600-1100 mg/Nm3（标况、10%O2、以NO2计），最大脱硝效率不低于60%，脱硝后水泥窑尾烟卤排放小于400 mg/Nm3（标况、10%O2、以NO计）。

关键词：水泥窑；选择性非催化还原；脱硝；氮氧化物

Design of SNCR flue gas denitrification process in cement clinker production line

Abstract

According to the status and process requirements of the 1000 t/d cement clinker production line, selective non-catalytic reduction (SNCR) denitrification system for cement kiln in flue gas denitrification project was designed. A corresponding SNCR flue gas denitration system configuration scheme was made by using reducing agent of 20~25% ammonia (mass fraction). Simulation model for each cement kiln production line decomposer model, combustion characteristics and working conditions characteristics, theory combined with practical engineering experience to ensure that the optimal design is tailored to the project. Finally, the initial concentration range of nitrogen oxides emitted from the chimney at the cement kiln is 600-1100 mg/Nm3 (standard condition, 10% O2, and NO2). Maximum denitrification efficiency is not less than 60%. After the denitrification, the smoke emission from the cement kiln was less than 400mg/Nm3 (standard condition, 10% O2, NO).

Key words: Cement kiln; Selective non-catalytic reduction; Denitrification; Nitrogen oxides

摘要 Ⅰ

Abstract Ⅱ

第一章绪论 1

1.1项目概况 1

1.2设计依据 1

第二章水泥工业研究现状 3

2.1水泥生产线中烟气NOX生成 3

2.2水泥窑NOX控制技术 3

第三章水泥熟料生产线SNCR脱硝设计 5

3.1SNCR脱硝系统设计参数确定 5

3.2工艺设计说明 6

3.3SNCR脱硝系统设计关键技术 7

3.4SNCR工艺模块说明 8

3.5监测系统部分（CEMS） 10

3.6SNCR系统控制部分 10

3.7脱硝系统用水、电、气 11

3.8SNCR脱硝系统保护条件 12

第四章主要设备选型 14

4.1选型依据 14

4.2设备表 14

4.3其他部分报价 16

第五章 SNCR烟气脱硝工艺设计计算 18

5.1设计基础参数 18

5.2还原剂计算 18

第六章劳动定员 20

6.1生产组织 20

6.2人员编制 20

6.3人员培训水泥熟料生产线SNCR烟气脱硝工艺设计:http://www.chuibin.com/huaxue/lunwen_206342.html