CO<sub>2</sub> carbonation of calcium acetate derived from acidolysis of natural CaCO<sub>3</sub> for recycling of acetic acid and production of precipitated calcium carbonate

YANG Zheng; YUE Hairong; ZHOU Xiangge; LIANG Bin; XIE Heping

doi:10.3969/j.issn.0438-1157.2014.09.058

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CO₂ carbonation of calcium acetate derived from acidolysis of natural CaCO₃ for recycling of acetic acid and production of precipitated calcium carbonate

更新时间：2025-12-10

- CO₂ carbonation of calcium acetate derived from acidolysis of natural CaCO₃ for recycling of acetic acid and production of precipitated calcium carbonate
- CIESC Journal Issue 9, Pages: 3724-3731(2014)
- 作者机构：
  
  1. 四川大学化学工程学院,四川,成都,610065
  2. 四川大学CCUS与CO
  3. 四川大学化学学院,四川,成都,610065
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.09.058
  CLC： Q028.8
- Online First：05 September 2014，
  
  Published：05 September 2014
- 稿件说明：
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YANG Zheng, YUE Hairong, ZHOU Xiangge, et al. CO₂ carbonation of calcium acetate derived from acidolysis of natural CaCO₃ for recycling of acetic acid and production of precipitated calcium carbonate[J]. CIESC Journal, 2014, (9): 3724-3731. DOI: 10.3969/j.issn.0438-1157.2014.09.058.
DOI：

YANG Zheng, YUE Hairong, ZHOU Xiangge, et al. CO₂ carbonation of calcium acetate derived from acidolysis of natural CaCO₃ for recycling of acetic acid and production of precipitated calcium carbonate[J]. CIESC Journal, 2014, (9): 3724-3731. DOI: 10.3969/j.issn.0438-1157.2014.09.058. DOI：

摘要

乙酸酸解石灰石造腔是一种建造地下储库同时环保地开采石灰岩制备沉淀碳酸钙的新方法。通过耦合乙酸酸解石灰石及酸解产物乙酸钙CO2碳酸化的工艺过程，研究了乙酸酸解石灰岩的表面反应动力学和乙酸钙CO2碳酸化的工艺技术条件。采用正交实验分析法，研究了CO2碳酸化反应中乙酸钙浓度、反应温度、CO2压力、反应时间对乙酸钙碳酸化反应制沉淀碳酸钙的影响，并通过正交实验确定了最优化操作条件。实验结果表明，乙酸酸解反应速率主要受乙酸浓度控制。CO2碳酸化反应在当乙酸钙溶液浓度为0.631 mol·L-1，CO2压力为5.0 MPa，温度为80℃，反应时间为50 min时CO2碳酸化效率达到最高（23.13%），生成的沉淀碳酸钙产品各项指标均符合中国国标优级要求。

Abstract

Acetic acid dissolution of limestone for formation of cavity is a kind of environmental approach to fabricating underground storage and preparing precipitated calcium carbonate. This process is an integrated technology consisting of acetic acid dissolution of limestone and CO2 carbonation of calcium acetate. The kinetics of limestone acidolysis with acetic acid was investigated. Orthogonal experiments were conducted with emphasis on operation conditions (i.e.

concentration of calcium acetate

pressure of CO2

reaction temperature

and reaction time) of the carbonation reaction. The highest conversion of calcium acetate (23.13%) was achieved at the calcium acetate concentration of 0.631 mol·L-1

CO2 pressure of 5 MPa

reaction temperature of 80℃ and reaction for 50 min. The product of calcium carbonate was analyzed and could meet the requirements of Chinese national standard.

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CO2 carbonation of calcium acetate derived from acidolysis of natural CaCO3 for recycling of acetic acid and production of precipitated calcium carbonate

DOI：10.3969/j.issn.0438-1157.2014.09.058

摘要

Abstract

关键词

Keywords

references

CO₂ carbonation of calcium acetate derived from acidolysis of natural CaCO₃ for recycling of acetic acid and production of precipitated calcium carbonate