低温煤焦油加氢精制-裂化工艺流程模拟

doi:10.3785/j.issn.1008-973X.2015.05.016

浙江大学学报(工学版)

能源工程与动力工程

低温煤焦油加氢精制-裂化工艺流程模拟

唐巍,夏芝香,夏良燕,方梦祥,王勤辉,骆仲泱

浙江大学能源清洁利用国家重点实验室,浙江杭州 310027

Simulation of low temperature coal tar hydrotreating-hyrocracking process

TANG Wei, XIA Zhi-xiang, XIA Liang-yan, FANG Meng-xiang, WANG Qin-hui, LUO Zhong-yang

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

全文: PDF(798 KB) HTML

摘要：

利用化工模拟软件Aspen Plus,建立低温煤焦油加氢精制-加氢裂化工艺流程.以低温煤焦油中主要化合物作为模拟焦油物流,计算低温煤焦油加氢精制-加氢裂化工艺的产品收率、性质和系统能耗,考察了加氢反应温度、压力对于产品品质和能耗的影响.结果表明,该模型可以较好地模拟煤焦油加氢精制-加氢裂化工艺,模拟结果与文献实验值较为接近.系统主要能耗为原料加热炉和氢气压缩机能耗,分别占总能耗的58.7%和24.3%.提高加氢反应温度和压力都可以提高汽油馏分的收率,降低柴油馏分收率和汽、柴油中的S、N含量,但温度的影响要更为明显.加氢裂化反应温度由345 ℃提高到420 ℃,系统总能耗将提高15%以上.提高反应压力会显著增大氢气压缩机能耗,但对系统总能耗影响不大.

Abstract:

A flowsheet of hydrotreating-hydrocracking system for the production of gasoline and diesel oil from low temperature coal tar was designed and simulated by Aspen Plus. Several typical compounds in low temperature coal tar were chosen as the simu-tar flow. The yield and property of product and energy consumption of the system were analysed. The effects of reaction temperature and pressure on product properties and energy consumption were evaluated as well. The results show the good concordance between the simulation and the experimental results in references, indicating that the process is well simulated. Heating furnace and hydrogen compressor cost most of system energy consumption with 58.7% and 24.3%, respectively, of the total. The increase of reaction temperature or pressure can enhance gasoline fraction yield, and decrease diesel oil pfaction yield and the content of S and N in all products. However, the effect of temperature is more significant than that of pressure. The system total energy consumption increases by more than 15% when hydrocracking temperature increases from 345 °C to 420 °C. Increasing reaction pressure leads to apparent increase of energy consumption of hydrogen compressor, while a little increase in total energy consumption．

出版日期: 2015-12-26

TQ 530.2

基金资助:

国家“863”高技术研究发展计划资助项目(2013AA051203);国际合作项目(2011DFR60190,2010DFA72730)

通讯作者: 方梦祥，男，博导 E-mail: mxfang@zju.edu.cn

作者简介: 唐巍（1986-)，男，博士生.从事煤焦催化加氢的研究.E-mall:tangwei1011@zju.edu.cn

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引用本文:

唐巍,夏芝香,夏良燕,方梦祥,王勤辉,骆仲泱. 低温煤焦油加氢精制-裂化工艺流程模拟[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.05.016.

TANG Wei, XIA Zhi-xiang, XIA Liang-yan, FANG Meng-xiang, WANG Qin-hui, LUO Zhong-yang. Simulation of low temperature coal tar hydrotreating-hyrocracking process. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.05.016.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.05.016 或 http://www.zjujournals.com/eng/CN/Y2015/V49/I5/924

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