第二类吸收式热泵回收炼厂低温余热实例

Example of low temperature waste heat recycle by adsorption heat transformer in refining factory

介绍了采用两级第二类吸收式热泵代替原有锅炉,利用常减压、催化裂化和延迟焦化装置的低温余热产生0.35 MPa蒸汽作为气分装置脱乙烷塔再沸器热源的节能方案。设计了1台热负荷为5 000 kW的热泵,其性能指数为0.321 2。该热泵系统投用后每年可节约渣油4 013 t,同时减少CO2排放量6 947.50 t,投资回收期为0.848 a。

Using a two-stage absorption heat transformer(AHT) instead of old boiler,the steam of 0.35 MPa could be produced from the low temperature waste heat in the crude oil unit,catalytic cracking unit and delayed coking unit to supply heat for reboiler of deethanizer.A AHT with the thermal load of 5 000 kW was designed,and its coefficient of performance(COP) was 0.321 2.After the AHT systerm was applied to production,the residuum could be saved by 4 013 t/ a,the discharge of CO 2 could reduce 6 497.50 t/ a,and th...