清香型白酒酿造过程节能减排方案设计

Design of Energy Saving and Emission Reduction Scheme in the Brewing Process of Light-flavor Liquor

白酒属于传统产业,其酿造过程将消耗大量的水资源和排放大量的污水废热。为了降低清香型白酒酿造过程的耗水量和排污量,设计了一种清香型白酒酿造工艺水资源循环利用和余热再利用的方案,即从冷酒器出来的高温水,通过换热器与泡粮水、焖粮水和清洁水进行热交换,既可提高冷酒水的热能利用率、实现废热的回收再循环利用,又能够降低水资源的消耗量和污水排放量。与传统清香型白酒酿造工艺对比,结果显示,清香型白酒吨酒耗水资源由原来的19.3 t降低到11.5 t,降幅达到41%,且水重复利用率达到80%。该方案符合当下经济社会节能减排、绿色发展的要求。

Liquor is a traditional industry,and its brewing process will consume a lot of water resources and emit a lot of sewage and waste heat.In order to reduce the water consumption and sewage discharge in the brewing process of light-flavor liquor,this paper designs a scheme of water recycling and waste heat reuse in the brewing process of light-flavor liquor.That is,the high-temperature water from the wine cooler exchanges heat with the soaked grain water,stewed grain water and clean water through the heat exchanger,which can not only increase the heat energy utilization rate of cold wine water,realize the recovery and recycling of waste heat,but also reduce water consumption and sewage discharge.Compared with the traditional brewing process of light-flavor,the results show that the water consumption per ton of light-flavor is reduced from 19.3 tons to11.5 tons,a decrease of 41%,and the water reuse rate reaches 80%.This plan meets the current economic and social requirements for energy conservation,emission reduction,and green development.