Deep utilization scheme of heat in flue gas from heating furnace in delayed coking facility and engineering practices
MENG Fan-rui1, WANG Sui-lin1, MU Lian-bo1, ZHANG Chi1, ZHANG Guan-bo1, ZHOU Ying-zheng2, ZHAI Hui-xing1
1. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2. Shandong Chambroad Petrochemicals Co., Ltd., Boxing 256500, China
Abstract: The flue gas from the heating furnace in petrochemical delayed coking facility exhibits high temperature,strong corrosion and difficult heat recovery.Taking a heating furnace in an 800,000 tons/year delayed coking facility of a Shandong petrochemical company as an example,this paper puts forward an energy-saving innovation scheme for deep utilization of flue gas heat,based on the study of flue gas characteristics.A flue gas condensation heat recovering facility that exhibits anti-corrosion,high efficient and low resistance is developed independently and used to perform engineering tracking and testing.It is shown that under rated operation conditions,the temperature of flue gas discharged from the heating furnace is reduced from 200℃ to 40℃,saving energy by 15.6%.Under the conditions of partial load,the temperature of flue gas discharged from the heating furnace is lowered from 150-180℃ to 40℃,saving energy by 13.5%-14.6% and recycling 33.1-46.4 t/d of condensate water.This scheme can obviously reduce mist discharge,save energy and water,and will bring about remarkable environmental and economic benefits.
孟繁瑞, 王随林, 穆连波, 张弛, 张冠博, 周英正, 翟慧星. 延迟焦化装置加热炉烟气余热深度回收利用方案与工程实测[J]. 现代化工, 2018, 38(3): 199-202,204.
MENG Fan-rui, WANG Sui-lin, MU Lian-bo, ZHANG Chi, ZHANG Guan-bo, ZHOU Ying-zheng, ZHAI Hui-xing. Deep utilization scheme of heat in flue gas from heating furnace in delayed coking facility and engineering practices. Modern Chemical Industry, 2018, 38(3): 199-202,204.