夹点技术优化改造蜡油加氢裂化装置换热网络及有效能分析

发布时间：2018-04-27 18:55

本文选题：加氢裂化 + 有效能分析　；参考：《化工进展》2017年04期

【摘要】：针对某炼厂150万吨蜡油加氢裂化装置,采用单段串联+冷高分+常压塔+减压塔+轻烃吸收塔工艺流程,基于生产数据利用Aspen Plus软件对装置中反应部分和分离部分的各个单元模块进行模拟,通过参数的调整,使得模拟结果与标定数据达到很好的吻合,进而获得各个流股的热力学参数。结合夹点技术对其换热网络进行能效分析,进而找到该工艺流程中的用能"瓶颈",在不改变装置主要设备的前提下,对现有换热网络调优并模拟计算得到节能方案,同时利用有效能分析方法对改造前后换热网络进行用能评价。调优后,热公用工程用量为25709k W,相比原工艺流程节约了42.20%,冷公用工程用量为29863k W,相比原工艺流程节约了38.50%;总体来看改造方案相比原工艺流程节约了17.19kg EO/t的能耗。换热网络的总?损失也由原来的13530k W降低到8477k W,总?损失降低了37.35%。
[Abstract]:For a 1.5 million ton waxy oil hydrocracking unit in a refinery, a single stage series cold high pressure column vacuum tower for light hydrocarbon absorption tower was adopted. Based on the production data, Aspen Plus software is used to simulate each unit module of the reaction part and the separation part of the device. Through adjusting the parameters, the simulation results are in good agreement with the calibration data. The thermodynamic parameters of each stream are obtained. The energy efficiency of the heat exchange network is analyzed by means of pinch technology, and the "bottleneck" of energy consumption in the process is found. Without changing the main equipment of the device, the existing heat exchange network is optimized and the energy saving scheme is obtained by simulation calculation. At the same time, the efficiency analysis method is used to evaluate the energy use of the heat transfer network before and after revamping. After the optimization, the consumption of hot utility is 25709kW, which saves 42.20 and 29863kW compared with the original process and 38.50kW compared with the original process, and the energy consumption of 17.19kg EO/t is saved compared with the original process. The total heat transfer network? The loss was also reduced from 13530kW to 8477 kW, total? The loss was reduced by 37.35.
【作者单位】：大连理工大学精细化工国家重点实验室膜科学与技术研究开发中心;中国石化抚顺石油化工研究院;北京沃利帕森工程技术有限公司;
【基金】：中国石油化工股份有限公司(X514001) 国家留学基金(201506060258) 长江学者奖励计划(T2012049) 辽宁省高等学校创新团队(LT2015007) 中央高校基本科研业务费专项基金(DUT16TD19)项目
【分类号】：TE624

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