低温余热回收技术在芳烃联合装置中应用

发布时间：2018-06-23 22:13

  本文选题：芳烃联合装置 + 低温热回收利用技术　； 参考：《华南理工大学》2014年硕士论文

【摘要】：本文论述了低温余热回收在当今提倡绿色低碳社会的重要性，以及低温余热回收技术的应用现状。芳烃联合装置是炼化企业中典型的高耗能装置，在海南炼化60万吨/年芳烃装置投产以前，世界上所有的芳烃装置均被美国UOP、法国IFP技术垄断，这些装置中大量的塔顶低温热量和反应物料余热均采用常规的空冷冷却方式，不仅浪费塔顶低温余热，而且空冷风机也同时消耗大量电能。中国石化海南炼油化工有限公司（简称海南炼化）芳烃联合装置采用中国石化自主知识产权的工艺包技术，在节能降耗方面有很大突破，一方面对于传统工艺中塔顶温度稍高的塔，通过适当提高塔顶压力、温度，使其能够产生0.45MPa蒸汽，发出的蒸汽经过加热炉对流段过热后，推动汽轮机发电；另一方面对于塔顶温度相对较低的塔，塔顶设置热水换热器，将热水换热至120℃后，送至卡琳娜循环热水发电系统和ORC热水发电系统发电。通过此项技术回收利用装置内绝大部分低温热量。目前，，整个装置的发电量已超过装置的用电量，实现了芳烃联合装置不耗电，还向外输出电的良好效果，并通过能耗对比进一步验证了低温余热回收技术的先进性。此项技术的成功应用，对有大量低温热存在的炼油化工、冶金、钢铁、火电等行业进行节能优化具有重要的指导意义，且具有广阔的应用前景。
[Abstract]:This paper discusses the importance of low temperature waste heat recovery in green and low carbon society, and the application status of low temperature waste heat recovery technology. The aromatics combination unit is a typical high energy consumption unit in refinery and chemical enterprises. Before the 600000 ton / year aromatics unit was put into production in Hainan, all aromatics units in the world were monopolized by UOPand French IFP technology. A large amount of low temperature heat at the top of the tower and residual heat of the reaction material are used in these devices, which not only waste the low temperature heat at the top of the tower, but also consume a lot of electric energy at the same time. Sinopec Hainan Refining and Chemical Co., Ltd (abbreviated as Hainan Refining and Chemical Co., Ltd.) uses the process package technology of Sinopec's independent intellectual property rights to make a great breakthrough in energy saving and consumption reduction. On the one hand, for the tower with slightly higher top temperature in the traditional process, the steam can be produced by properly increasing the top pressure and temperature, and the steam emitted by the tower can be superheated through the convection section of the heating furnace to promote the steam turbine to generate electricity. On the other hand, for the tower with relatively low temperature at the top of the tower, a hot water exchanger is installed on the top of the tower, and the hot water is transferred to the Karina circulating hot water generation system and the ORC hot water power generation system to generate electricity after heat transfer to 120 鈩

本文编号：2058627