Theory analysis and application of two kinds of technologies for ammonia production by urea hydrolysis

HUA Licun; WU Chunhua; MA Wenjie; ZHU Wenyu; ZHENG Wei

doi:10.19666/j.rlfd.201903056

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Theory analysis and application of two kinds of technologies for ammonia production by urea hydrolysis

更新时间：2025-09-28

- Theory analysis and application of two kinds of technologies for ammonia production by urea hydrolysis
- Thermal Power Generation Vol. 48, Issue 11, Pages: 135-140(2019)
- 作者机构：
  
  1. 中国电力工程顾问集团西北电力设计院有限公司
  2. 上海电力大学环境与化学工程学院
  3. 成都锐思环保技术股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201903056
  CLC： X511;TM621
- Published Online：29 October 2019，
  
  Published：2019
- 稿件说明：
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HUA Licun, WU Chunhua, MA Wenjie, et al. Theory analysis and application of two kinds of technologies for ammonia production by urea hydrolysis[J]. Thermal power generation, 2019, 48(11): 135-140.
DOI：

HUA Licun, WU Chunhua, MA Wenjie, et al. Theory analysis and application of two kinds of technologies for ammonia production by urea hydrolysis[J]. Thermal power generation, 2019, 48(11): 135-140. DOI： 10.19666/j.rlfd.201903056.

摘要

本文介绍和比较了不添加催化剂和添加催化剂2种烟气脱硝用尿素水解制氨技术

对比2种制氨工艺的反应机理、反应速率、能耗、跟随机组负荷变化等情况发现:2种制氨工艺的设计温度为160℃

且该温度下2种制氨工艺的反应速率相同;但加入催化剂—磷酸二氢铵和磷酸氢二铵后

易导致尿素水解反应体系的pH值降低

对反应设备的腐蚀风险性增加;2种制氨工艺的能耗相同

且均能及时响应随机组负荷变化。目前

在电厂制氨工艺中

主要以不添加催化剂的尿素水解工艺为主。

Abstract

Two types of ammonia production technologies by urea hydrolysis for flue gas denitrification were introduced and compared

which include adding catalyst and without adding catalyst. The reaction mechanism

reaction rate

energy consumption and capacity of following the unit load change of the above two ammonia production technologies were theoretically analyzed and practically compared. The results show that

at the designed reaction temperature 160 ℃ for both the two technologies

the reaction rate of them were the same. However

after the catalysts

the ammonium dihydrogen phosphate and diammonium hydrogen phosphate

were added

the p H value of the urea hydrolysis reaction system decreased

which increased the corrosion risk of the hydrolytic equipment. The two technologies had the same energy consumption

and both can meet the demand of load respond. At present

power plants mainly apply the technology of ammonia production without catalyst addition.

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