Two kinds of new carbon capture technology by ammonia based on reinforced crystallization

ZHANG Yu; GAO Jianmin; HE Mingyue; FENG Dongdong; QIAN Juan; DU Qian; YANG Jianguo; WU Shaohua

doi:10.11949/j.issn.0438-1157.20141684

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Two kinds of new carbon capture technology by ammonia based on reinforced crystallization

更新时间：2025-12-10

- Two kinds of new carbon capture technology by ammonia based on reinforced crystallization
- CIESC Journal Issue 6, Pages: 2123-2130(2015)
- 作者机构：
  
  哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141684
  CLC： K16
- Online First：25 March 2015，
  
  Published：25 March 2015
- 稿件说明：
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ZHANG Yu, GAO Jianmin, HE Mingyue, et al. Two kinds of new carbon capture technology by ammonia based on reinforced crystallization[J]. CIESC Journal, 2015, (6): 2123-2130.
DOI：

ZHANG Yu, GAO Jianmin, HE Mingyue, et al. Two kinds of new carbon capture technology by ammonia based on reinforced crystallization[J]. CIESC Journal, 2015, (6): 2123-2130. DOI： 10.11949/j.issn.0438-1157.20141684.

摘要

针对目前氨法二氧化碳捕集技术中存在的氨逃逸、再生能耗高、反应后期吸收率低等问题

提出了两种基于溶析法强化结晶的工艺

分别为混合吸收剂法以及溶析法强化低碳化度氨水结晶工艺。低碳化度氨水结晶可以使吸收过程维持在较高的吸收速率

采用晶体产物解析既可以实现再生能耗的降低又可以解除再生能耗对于氨水浓度的限制

因此可选低浓度氨水作为吸收剂

在一定程度上解决当前氨法脱碳中存在的问题。两种工艺均采用以晶体产物再生代替富液循环的再生方法

大大降低再生过程中的能耗。两种新工艺均是采用半连续鼓泡反应系统进行的基础研究

并从工艺路线、吸收效率、结晶收率、晶体产物特性等方面进行对比。

Abstract

In response of such problems as ammonia escape

high regeneration energy

low absorption rate in the late stage of carbon capture by ammonia

this paper presents two kinds of reinforced crystallization technologies based on solventing-out

respectively called mixed absorbent process and reinforced crystallization of carbonized aqueous ammonia. Reinforcing crystallization of aqueous ammonia of low carbonization degree can maintain average absorption rate at a high level and regeneration by desorbing crystal product can save regeneration energy. Ammonia of low carbonization degree is chosen as absorbent

which can solve the ammonia escape problem to some extent. In the two kinds of processes

the common point is that regeneration by desorbing crystal product replaces recycling of carbonized aqueous ammonia and consequently saves regeneration energy. These two new processes all adopt semi-continuous bubbling reactor

and their process route

absorption rate

crystallization yield

characteristics of crystal product are compared.

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