The invention discloses a method for automatically switching hydrogen sources, which is characterized by that the hydrogen sources are mainly recycled hydrogen in dehydrogenation process, supplemented by purchased hydrogen supplement, in which the amount of recovered hydrogen is 80% and the amount of purchased hydrogen is 20%. The hydrogen pressure in the recovered dehydrogenation process is 0.8 MPa, which is directly used in the hydrogenation process after buffer tank is buffered, and the bottled hydrogen or long tube car hydrogen is purchased. The pressure is 15 MPa, and the pressure after pressurization is 0.8 MPa for the hydrogenation process. The invention achieves the goal of reducing cost by maximizing the utilization and recovery of hydrogen by automatic control, and realizes automatic switching through the control of PLC system, which can not only reduce a large number of manpower, but also solve the situation that the production capacity of the device is too low due to the untimely inspection by human; Compared with the existing technology, it has the characteristics of saving resources, reducing manpower and reducing cost.
【技术实现步骤摘要】
一种自动切换加氢气源的方法
本专利技术涉及切换加氢气源
,更具体的说是涉及一种自动切换加氢气源的方法。
技术介绍
现在异丙甲草胺工业化生产主要包括以下三个工序:(1)丙二醇单甲醚脱氢制甲氧基丙酮(2)甲氧基丙酮与2-乙基-6-甲基苯胺通过加氢缩合生成2-乙基-6-甲基-N-(1′-甲氧基-2′-丙基)苯胺(简称胺醚),反应条件t=50℃,p=0.5-0.8MPa胺醚与氯乙酰氯反应生成异丙甲草胺。其中胺醚的制备是生产异丙甲草胺的关键步骤。目前加氢过程中的氢气来源主要有以下三个方面:(1)购买瓶装氢气或长管车氢气。(2)自建制氢站,用甲醇转化或氨裂解制氢。甲醇转化制氢:CH3OH→CO+2H2CO+H2O→CO2+H2氨裂解制氢:2NH3-3H2+N2(3)回收脱氢工序的氢气和外购氢气相结合因此,如何提供一种具有节约资源、减少人力、降低成本特点的自动切换加氢气源的方法是本领域技术人员亟需解决的问题。
技术实现思路
有鉴于此,本专利技术提供了一种具有节约资源、减少人力、降低成本特点的自动切换加氢气源的方法。为实现上述目的,本专利技术提供如下技术方案:一种自动切换加氢气源的方法,其特征在于,所述氢气源以回收脱氢工序的氢气为主,外购氢气补充为辅;其中,回收氢气用量为80%,外购氢气用量20%;所述回收氢气压力为0.8MPa;所述外购氢气压力为15MPa。优选的,在上述一种自动切换加氢气源的方法中,回收脱氢工序的回收氢气和外购氢气相之间的相互切换;回收脱氢工序和自建氢气站供氢之间的相互切换;其他两种或两种以上气源供应同一装置的气源之间的相互切换。经由上述的技术方案可 ...
【技术保护点】
1.一种自动切换加氢气源的方法,其特征在于,所述氢气源以回收脱氢工序的氢气为主,外购氢气补充为辅;其中,回收氢气用量为80%,外购氢气用量20%;所述回收氢气压力为0.8MPa;所述外购氢气压力为15MPa。
【技术特征摘要】
1.一种自动切换加氢气源的方法,其特征在于,所述氢气源以回收脱氢工序的氢气为主,外购氢气补充为辅;其中,回收氢气用量为80%,外购氢气用量20%;所述回收氢气压力为0.8MPa;所述外购氢气压力为15MPa。2.根据...
【专利技术属性】
技术研发人员:任立生,孙守福,侯江涛,徐遵船,董洪波,赵伟,
申请(专利权)人:山东侨昌化学有限公司,
类型:发明
国别省市:山东,37
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