半水煤气有机硫脱除技术改造的初步方案
发布时间：2018-08-16 12:42
【摘要】：在合成氨的生产过程中,可以采用多种工艺获得粗原料气,但所制得的粗原料气中均含有一定量的硫化物。硫化物的存在对合成氨生产的影响很大,为了保证系统长周期稳定运行,应将其脱除至符合工艺要求。通过对甘肃××化工有限公司合成氨半水煤气系统脱硫工段的现场跟踪了解,并向操作工人和技术人员咨询学习,熟悉了该公司半水煤气系统脱硫工段的工艺过程,获取了一些有关工艺参数。该公司在半水煤气系统脱硫工段采用湿法脱硫串联干法脱硫的工艺,经湿法脱硫后的半水煤气有机硫含量较高,有机硫的脱除完全依靠氧化锌,导致氧化锌更换频繁。因此,本论文以该公司在半水煤气系统脱硫工段运行过程中存在的问题为研究对象,通过查阅相关资料和咨询技术人员,在现有脱硫装置的基础上,针对该套半水煤气脱硫系统提出如下技术改造方案。本方案主要是在低压机的一级出口分离器与二级进口缓冲器之间设置一套常温有机硫水解装置,并对该装置及其配套附属设备进行了一定的工艺设计计算。核算结果表明本技术改造方案,可将现有氧化锌脱硫装置的使用周期延长至原来的4.26倍。
[Abstract]:In the production of synthetic ammonia, crude raw gas can be obtained by various processes, but the crude raw gas can contain a certain amount of sulfides. The existence of sulphide has a great influence on ammonia production. In order to ensure the long period and stable operation of the system, it should be removed to meet the requirements of the process. By following up the desulphurization section of ammonia semi-water gas system in Gansu 脳 脳 Chemical Co., Ltd., and consulting the operators and technicians, the author is familiar with the technological process of the desulfurization section of the semi-water gas system of Gansu 脳 脳 Chemical Co., Ltd. Some technological parameters are obtained. The wet desulfurization series dry desulfurization process is adopted in the desulfurization section of the semi-water gas system. The organic sulfur content of the half-water gas desulfurized by wet desulfurization is relatively high, and the removal of organic sulfur completely depends on zinc oxide, which leads to the frequent replacement of zinc oxide. Therefore, this paper takes the problems existing in the operation of the desulfurization section of the semi-water gas system as the research object, through consulting the relevant information and consulting the technicians, on the basis of the existing desulphurization equipment. According to the semi-water gas desulphurization system, the following technical retrofit scheme is put forward. In this scheme, a set of organic sulfur hydrolysis unit at room temperature is installed between the primary outlet separator and the secondary inlet buffer of the low-pressure machine, and the process design and calculation of the unit and its auxiliary equipment are carried out. The calculation results show that the existing zinc oxide desulphurization unit can be extended to 4.26 times as long as the original life cycle.
【学位授予单位】：西北师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ113.242
本文编号：2186017
[Abstract]:In the production of synthetic ammonia, crude raw gas can be obtained by various processes, but the crude raw gas can contain a certain amount of sulfides. The existence of sulphide has a great influence on ammonia production. In order to ensure the long period and stable operation of the system, it should be removed to meet the requirements of the process. By following up the desulphurization section of ammonia semi-water gas system in Gansu 脳 脳 Chemical Co., Ltd., and consulting the operators and technicians, the author is familiar with the technological process of the desulfurization section of the semi-water gas system of Gansu 脳 脳 Chemical Co., Ltd. Some technological parameters are obtained. The wet desulfurization series dry desulfurization process is adopted in the desulfurization section of the semi-water gas system. The organic sulfur content of the half-water gas desulfurized by wet desulfurization is relatively high, and the removal of organic sulfur completely depends on zinc oxide, which leads to the frequent replacement of zinc oxide. Therefore, this paper takes the problems existing in the operation of the desulfurization section of the semi-water gas system as the research object, through consulting the relevant information and consulting the technicians, on the basis of the existing desulphurization equipment. According to the semi-water gas desulphurization system, the following technical retrofit scheme is put forward. In this scheme, a set of organic sulfur hydrolysis unit at room temperature is installed between the primary outlet separator and the secondary inlet buffer of the low-pressure machine, and the process design and calculation of the unit and its auxiliary equipment are carried out. The calculation results show that the existing zinc oxide desulphurization unit can be extended to 4.26 times as long as the original life cycle.
【学位授予单位】：西北师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ113.242
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