Double-salt precipitation of Ca(NO<sub>2</sub>)<sub>2</sub> derived from multi-pollution control process by ozone

LIU Yingzu; ZHU Yanqun; MA Qiang; XU Chaoqun; WANG Zhihua; ZHOU Junhu; CEN Kefa

doi:10.3969/j.issn.0438-1157.2014.12.043

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Double-salt precipitation of Ca(NO₂)₂ derived from multi-pollution control process by ozone

更新时间：2025-12-10

- Double-salt precipitation of Ca(NO₂)₂ derived from multi-pollution control process by ozone
- CIESC Journal Issue 12, Pages: 4965-4970(2014)
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.12.043
  CLC： Q115
- Online First：05 December 2014，
  
  Published：05 December 2014
- 稿件说明：
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LIU Yingzu, ZHU Yanqun, MA Qiang, et al. Double-salt precipitation of Ca(NO₂)₂ derived from multi-pollution control process by ozone[J]. CIESC Journal, 2014, (12): 4965-4970. DOI: 10.3969/j.issn.0438-1157.2014.12.043.
DOI：

LIU Yingzu, ZHU Yanqun, MA Qiang, et al. Double-salt precipitation of Ca(NO₂)₂ derived from multi-pollution control process by ozone[J]. CIESC Journal, 2014, (12): 4965-4970. DOI: 10.3969/j.issn.0438-1157.2014.12.043. DOI：

摘要

针对复盐沉淀法(氢氧化钙与亚硝酸钙反应生成复盐沉淀)处理烟气中臭氧氧化氮氧化物的液相吸收产物亚硝酸钙

采用控制变量法对此反应的诸多影响因素(反应温度、反应物浓度、反应过程扰动和反应物形态等)进行了试验研究.结果表明:为提高复盐沉淀效率

需要选择合适的反应温度(80℃最佳)

同时反应物投药量的增加以及反应过程湍流度的增大都能够有效提高复盐共沉淀效率.复盐沉淀会伴随着氢氧化钙的析出而动态产生

构建氢氧化钙的析出条件能提高亚硝酸钙捕集效率.

Abstract

Based on the double-salt precipitation method

an experimental study on the precipitation of calcium nitrite derived from wastewater treatment by oxidation of NOx and SO2 with ozone was performed. The effects of reaction temperature

reactant concentration

turbulence intensity on calcium nitrite precipitation efficiency were investigated by the variable-controlled method. Reaction temperature strongly influenced precipitation efficiency and optimal temperature was 80℃. Both increasing reactant concentration and turbulence intensity in the reaction process could enhance precipitation efficiency. Because double-salt precipitation was accompanied by separation of calcium hydroxide

precipitation efficiency could be improved by altering the separation conditions of calcium hydroxide.

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Double-salt precipitation of Ca(NO2)2 derived from multi-pollution control process by ozone

DOI：10.3969/j.issn.0438-1157.2014.12.043

摘要

Abstract

关键词

Keywords

references

Double-salt precipitation of Ca(NO₂)₂ derived from multi-pollution control process by ozone