重整C_9芳烃分馏塔冷凝潜热综合利用新工艺  

Integrated utilizing process for condensation latent heat of reforming C_9 arene fractionating column

作　　者：赵永祥 侯敏 杜颖 

机构地区：[1]中石油东北炼化工程有限公司锦州设计院,辽宁锦州121001

出　　处：《化学工程》2011年第12期100-102,共3页Chemical Engineering(China)

摘　　要：基于重整C9芳烃分离装置塔顶油气冷凝潜热的特点,分析对比现有换热工艺及几种新的节能新工艺,研究发现,利用二塔塔顶油气生产0.4 MPa饱和水蒸气,二塔塔釜分别设加热热源工艺和分馏塔热集成与塔顶油气生产0.4 MPa水蒸气联合运用工艺,二者节能效果相当,但是后者装置外提供的一次能量较前者小,因此分馏塔热集成与塔顶油气生产0.4 MPa水蒸气联合运用工艺更好。文中提出对于新建的重整C9芳烃分离装置可以采用分馏塔热集成与塔顶油气冷凝潜热生产水蒸气联合节能工艺,可以直接利用其分馏塔顶油气冷凝潜热生产水蒸气,以降低能耗,由重整C9芳烃塔顶油气潜热所生产的0.4 MPa水蒸气可以直接使用,也可以通过压缩机进行提温提压后,并入低压蒸汽管网;对于现有装置可以通过改造,直接利用分馏塔顶油气生产水蒸气,其节能效果也十分明显。Based on the condensation latent heat characteristics of fractionating column top oil gas in C9 arenes separating unit, the existing heat transfer technologies and several new energy-saving technologies were analyzed and compared. The research shows that the technology with 0.4 MPa saturated steam produced from two-column top oil gas and two-column bottom heated with different heat sources and the technology with 0.4 MPa saturated steam produced from two-column top oil gas and utilizing integrated heat from fractionating column both are obviously agreed in energy saving. But, the latter needs less primary power provided from outside apparatus. So this technology is better. Both heat-integrated distillation technology and steam production technology by using latent heat energy can be used in new C9 arenes distillation plant, from which the vapor can be produced directly from condensation latent heat to decrease energy consumption. The produced 0.4 MPa steam can be directly used in the plant or sent into the low pressure steam system after elevating temperature and pressure via compressor. The technology can be applied in the existing plant through technical revamping to produce vapor by using latent heat to save energy.

关 键 词：C9芳烃 冷凝潜热 综合利用 

分 类 号：TQ051.5[化学工程]