A Primary Technological Transformation Scheme Of Semi-water Gas Organic Sulfur Removal

In the process of synthetic ammonia production, the crude feed gas can be obtained by a variety of processes, but the obtained crude feed gas contain a certain amount of sulfides. The presence of sulfides has a great impact on the production of synthetic ammonia, in order to ensure a long-term stable running of the system, it should be removed to meet the technical requirements.By keeping track of the synthetic ammonia desulfurization section of semi-water gas system of Gansu xx Chemical Co., LTD., consulting and learning from operation workers and technicians, semi-water gas system desulfurization section’s technological process had been acquainted and some information about the process parameters of the company had been also obtained.The company applied wet desulfurization tandem dry desulfurization process in the desulfurization section of semi-water gas system. After wet desulfurization of semi-water gas, organic sulfur content was higher and the removal of organic sulfur depended totally on zinc oxide leading to zinc oxide frequent replacement.Therefore, considering the situation, on the basis of the existing desulfurization equipment, a technological transformation scheme about the company’s desulfurization section of semi-water gas system is proposed in this paper by refering to relevant information and consulting technical personnel. Its aim is to improve manipulate and increase operation time.A set of room temperature organic sulfur hydrolysis device between the low pressure primary export separator and secondary import buffer is designed in the scheme. At the same time, the device and its supporting ancillary equipments were designed and calculated. Calculation results show that the technological transformation scheme can extend the current zinc oxide desulfurizer’s use cycle to 4.26 times of the original.