油页岩炼油低温余热回收利用技术应用研究  

Low temperature waste heat recovery and utilization technology of oil shale refining applied research

作　　者：辛海 杨勇 闫玉麟 徐振宇 XIN Hai;YANG Yong;YAN Yulin;XU Zhenyu(Shale Refinery,Fushun Mining Group Co.,Ltd.,Fushun 113115,China)

机构地区：[1]抚顺矿业集团有限责任公司页岩炼油厂,辽宁抚顺113115

出　　处：《中国高新科技》2025年第3期60-62,65,共4页

摘　　要：油页岩炼油过程产物包含低温瓦斯,因其温度较低未予以回收利用,与循环水间接换热后利用空冷器进行降温造成热量损失。文章采用吸收式热泵、间冷塔及干湿结合空冷器相结合的方式回收FG部装置低温瓦斯余热,主要研究了在不同余热水流量下供热、回水温度对余热回收量的影响。研究结果表明,在余热水流量为2000m^(3)条件下,余热水流量增加200m^(3)/h,热泵可将余热水温度从56℃降至46℃,余热水温差10℃,增加取热量8.4×10^(6)kJ/h,可减少蒸汽消耗3.1t/h;按供热面积为134万m^(2),供暖151天计算,可降低蒸汽费用和电费共计418.57万元/年。该余热回收系统的投资回收期为2年,吸收式热泵烟气余热回收系统节能效果显著。The product of oil shale refining process contains low-temperature gas,which is not recovered because of its low temperature.After indirect heat exchange with circulating water,it is cooled by air cooler,resulting in heat loss.In this paper,absorption heat pump,intercooling tower and dry and wet combined air cooler are used to recover the low temperature gas waste heat of FG unit.The influence of heat supply and return water temperature on waste heat recovery under different waste heat water flow was studied.The results show that when the flow rate of waste heat water is 2000m^(3) and the flow rate of waste heat water is increased by 200m^(3)/h,the heat pump can reduce the temperature of residual hot water from 56℃to 46℃,the temperature difference of residual hot water is 10℃,the heat extraction is increased by 8.4×10^(6)kJ/h,and the steam consumption can be reduced by 3.1t/h.According to the heating area of 1.34 million m^(2),heating for 151 days,reducing the steam cost and electricity cost of 4.1857 million yuan/year;the investment recovery period of the waste heat recovery system is 2 years,and the energy saving effect of the flue gas waste heat recovery system of the absorption heat pump is remarkable.

关 键 词：油页岩 瓦斯 干馏 低温余热 吸收式热泵机组 

分 类 号：TB66[一般工业技术—制冷工程]