安庆石化用氢优化分析与建议  

Methods of Optimizing Hydrogen Use for Sinopec Anqing Petrochemical Company and Suggestions

作　　者：肖兵[1] 

机构地区：[1]中国石化安庆分公司,安徽安庆246001

出　　处：《中外能源》2011年第2期86-89,共4页Sino-Global Energy

摘　　要：在对氢气需求量统计和各种加工方案分析的基础上,提出安庆石化用氢方案:新建装置制氢工艺应采用轻烃蒸汽转化法,制氢规模宜定为4.0×104t/a;顶出炼厂气作制氢原料;确定分级用氢原则,全厂设置高、低两个氢气管网,氢气提纯装置PSA-1出口供低压氢气管网,PSA-2和PSA-3出口供高压氢气管网,低压氢气管网压力按1.5～1.7MPa设置,高压氢气管网压力按2.0MPa设置,重整氢气进PSA-2。低压氢气管网满足蜡油加氢、柴油加氢Ⅲ和丁辛醇装置用氢需要,高压氢气管网供氢满足重油加氢装置需要,PSA-2重整尾气送制氢装置作原料。制氢装置原料选择和运转模式为:煤气化装置正常供氢期间,PSA-2重整尾气全部进制氢装置制氢;煤气化装置停工时,停苯乙烯装置,顶出焦化干气经原焦化干气制氢预处理设施加氢处理后,与PSA-2重整尾气共同作为制氢原料,以保证全厂氢气供应;制氢装置原料紧缺时,使用石脑油(或重整拔头油)作为补充原料。Based on the statistics of hydrogen demand and an analysis of various processing schemes ,this article presents a hydrogen use plan for Sinopec Anqing Petrochemical Company.New units should use the light hydrocarbon steam conversion method to generate hydrogen.The optimal scale of the hydrogen production is 2.0×10 4t/a.The process uses emitted refinery gas as feedstock for generating hydrogen.The use of hydrogen will he divided into stages.Two hydrogen pipeline grids will be established for the refinery-a high and a low-pressure pipeline grid.The PSA-1 outlet of the hydrogen purifying unit supplies gas to the low-pressure pipeline grid and the PSA-2 and PSA-3 outlets supply gas to the high-pressure pipeline grid.The pressure for the low-pressure pipeline grid is set at 1.5-1.TMPa and that for the high-pressure pipeline grid is set at 2.0MPa.Reformed hydrogen enters PSA-2.The low-pressure pipeline grid will supply hydrogen to the wax oil hydrogenation unit,the diesel hydrogenation unit III and the butyl octanol unit,while the high-pressure pipeline grid will supply hydrogen to the heavy oil hydrogenation unit.The reformed exhaust from PSA-2 will be supplied as feedstock to the hydrogen generator.The feedstock selection process for the hydrogen generator and the unit＇s operating mode are as follows：when hydrogen supply from the coal gasification unit is normal,all the reformed exhaust from PSA-2 will enter the hydrogen generator to produce hydrogen;when the coal gasifica tion unit stops,the styrene unit will be shut down and the coker dry gas emitted,after being hydrogenated by the existing coker dry gas-to-hydrogen pre-treating facility,will be used as feedstock for generating hydrogen together with reformed exhaust from PSA-2 to ensure a stable hydrogen supply to the entire refinery;when the hydrogen generator is short of feedstock ,naphtha（or reforming topped oil） will be used as an alternative.

关 键 词：油化一体化 氢气 氢烃转化法 炼厂气制氢 氢分压 

分 类 号：TQ116.2[化学工程—无机化工]