一种餐厨废水高温厌氧发酵沼气脱水工艺设计
王发生¹，王霞琴²
（1. 江苏派沃能源发展有限公司兰州分公司，甘肃 兰州 730050；2. 兰州石化职业技术学院机电工程学院，甘肃 兰州 730060）
摘要： 餐厨废水高温厌氧发酵产生大量高湿沼气，在管道输送过程中，对沼气中饱和水蒸气脱水尤为重要。所述工
艺利用水冷式冷水机组的工作原理，将湿热的沼气先进行冷冻脱水，成为干冷沼气，降低沼气露点，再进行加热，变成
干热沼气。工艺在工程中得到了验证，切实可行，是高温厌氧发酵沼气工艺系统中的必要环节，为北方地区餐厨项目高
温厌氧发酵产沼气工艺系统设计提供了一种新的思路和方法。
关键词： 餐厨废水；高温厌氧发酵；沼气脱水工艺
中图分类号： X703     文献标识码： A     文章编号： 2095-0802-(2021)02-0109-03
Design of Biogas Dehydration Process for High Temperature Anaerobic Fermentation of
Food Wastewater
WANG Fasheng¹, WANG Xiaqin²
(1. Lanzhou Branch Company, Jiangsu Power Energy Development Co., Ltd., Lanzhou 730050, Gansu, China; 2. School of
Mechanical and Electrical Engineering, Lanzhou Petrochemical College of Vocational Technology, Lanzhou 730060,
Gansu, China)
Abstract: A large amount of high humidity biogas is produced by high temperature anaerobic fermentation of food wastewater. In
the process of pipeline transportation, the dehydration of saturated steam in biogas is particularly important. Based on the working
principle of water-cooled chiller, the hot and humid biogas was frozen and dehydrated into dry and cold biogas, the dew point of
biogas was reduced, and then the biogas was heated to dry hot biogas. This process has been verified to be feasible in the project.
It is a necessary link in the high temperature anaerobic fermentation biogas process system, which provides a new idea and
method for the design of high temperature anaerobic fermentation biogas production process system in northern China.

Key words: food wastewater; high temperature anaerobic fermentation; biogas dehydration process