可再生脱硫吸收液沉淀法除硫酸根离子和氟离子

Sulfate and Fluoride Ions Were Removed by Precipitation of Renewable Desulfurization Absorbent Solution

对于可再生胺法脱硫吸收液净化系统,采用沉淀法将吸收液中的硫酸根离子和氟离子除去,实现吸收液品控的目的。沉淀法采用氢氧化钙和氟化氢溶液将吸收液中的硫酸根和氟离子除去,通过化学制衡的方式,严格控制吸收液中钙离子和氟离子含量。吸收液沉淀法净化技术可将脱硫吸收液中的硫酸根离子和氟离子分别降至17000 mg/L和200 mg/L,能够满足脱硫系统要求。

For the regenerable amine desulfurization absorption liquid purif ication system,the sulfate ion and the fluoride ion in the absorption liquid are removed by a precipitation method,thereby achieving the purpose of quality control of the absorption liquid.The precipitation method uses calcium hydroxide and hydrogen fluoride solution to remove the sulfate and fluoride ions in the absorption liquid,strictly control the content of calcium and fluoride in the absorption liquid by means of chemical checks and balances.The absorption liquid precipitation purif ication technology can reduce the sulfate ion and fluoride ion in the desulfurization absorption liquid to 17000 mg/L and 200 mg/L,respectively,which can meet the requirements of the desulfurization system.