利用糠醛废水生产环保融雪剂的工艺研究

为解决目前糠醛废水产生的污染以及氯盐融雪剂对环境和公共设施造成的危害,提出采用新工艺,用石灰石、氧化镁等和糠醛塔底废水中的醋酸反应,直接制取环保型融雪剂醋酸钙镁(CMA)技术,并将中和后的废水经双效蒸发得到浓缩液,将浓缩液使用活性炭吸附得到纯度较高的醋酸钙镁,蒸发冷凝水回用糠醛生产,从而实现糠醛废水的资源化利用,达到污水的零排放。本论文通过实验研究确定利用糠醛废水生产环保融雪剂醋酸钙镁的工艺流程及参数,使生产的醋酸钙镁纯度达到92%,完全符合环保融雪剂的质量标准,既解决了制约糠醛生产的环保瓶颈问题,实现了糠醛废水的资源化高效利用,又使醋酸钙镁的生产成本大幅度降低,最终实现糠醛废水处理由完全投入变为赢利行业。

Research on the Process of Producing Environmentally-friendly Snowmelt Agent with Furfural Water

To protect environment and public facilities from damage of the pollution of furfural water and chlorate snowmelt agent,we come up with the new craft,which produce environmentally-friendly snowmelt agent—calcium magnesium acetate(CMA) from the acetic acid reaction of limestone,magnesium oxide and furfural water.First we make concentrate by double-effect evaporating neutralized furfural water,then produce calcium magnesium acetate in high concentration by adsorpting the concentrate with active carbon,and deliver the evaporated condensated water back to the furfural production,as a result the reusing of furfural water and zero discharge comes true.This article researches the process and parameters of producing environmentally-friendly snowmelt agent—calcium magnesium acetate with furfural water,which are based on experiments.The purity of the calcium magnesium acetate reached 92%,which well conforms to the quality specification of environmentally-friendly snowmelt agent.It accomplishes the efficient resources utilization of the furfural water by solving the bottleneck problem of non-environmentally-friendly producing the furfural,and lower the production cost by leaps and bounds.Finally the reusing of furfural water transfers from absolute investment to earning industry.