燃煤电厂造纸白泥替代石灰石脱硫案例研究

Case study on replacing limestone with white mud in desulfurization of coal-fired power plants

在我国部分白泥富产区建立以白泥脱硫为核心的燃煤电厂循环经济体系,能够有效推动我国电力环保产业和循环经济的发展。针对脱硫剂白泥应用过程中存在的脱硫浆液质量浓度控制困难、石膏含水率异常偏高等问题,通过理论研究和试验分析给出了根据溶解性固体总量(TDS)调整浆液质量浓度控制范围以及去除脱硫塔内杂质的措施。研究结果可为白泥脱硫实际运行提供参考,并为白泥脱硫的大规模应用提供实践依据。

Establishing a circular economy system taking white mud as its core in coal-fired power plants located in mudrich areas can effectively promote the environmental protection in electricity industry and circular economy in China.However,difficulty in desulfurization slurry mass concentration control and high water content in gypsum are the problems in using white mud as desulfurizer.After theoretical study and tests,the solution is regulating the slurry mass concentration range according to the total dissolved solids(TDS)and removing the impurities in the desulfurization slurry.The study can provide reference and practical basis for white mud desulfurization in engineering cases and its large-scale application.