【Ten Years of Rapid Development in Chemical Equipment】969–2023: The First Domestic Coal Slurry Feeding Pump for Coal-to-Oil Production
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Ten years of rapid development in chemical processing equipment – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. HaiChuan becomes even better with your involvement; we welcome everyone to join in the forum discussions. Everyone should pay attention to safety and know how to handle emergencies. ********************************************* On May 6, 2020, the first domestically produced coal slurry feed pump for coal-to-oil production at **Energy Group’s Chemical Company was successfully tested for oil feeding, with all relevant parameters meeting the required standards, marking a successful first trial run of the feed pump. The high-pressure coal slurry feed pump is one of the key equipment in the direct coal liquefaction process. Considering the harsh conditions of this process during the initial design phase, six Uralak five-plunger high-pressure reciprocating pumps imported from abroad were selected. During normal operation, all six feed pumps are in use; there are no backup pumps. If a feed pump fails, it will directly affect the load on the plant, making it difficult for the plant to operate at high loads continuously. Furthermore, the procurement cycle for the vulnerable components of feed pumps is long, and the cost of equipment maintenance is extremely high; as a result, chemical companies have joined forces with qualified domestic manufacturers to carry out research projects aimed at developing domestically produced feed pumps. The research project on domestically produced coal slurry feed pumps was officially launched in 2017, with on-site construction beginning in April 2019. Through the diligent efforts of the project team, the challenges associated with carrying out both production activities and construction simultaneously were overcome, and the project was completed successfully. On May 6, a trial run was carried out successfully, during which relevant data was collected; at the same time, improvements were made to address the issues identified during the trial run. During this test run using oil-coal slurry as the medium, the relevant personnel followed the established plan strictly. By comparing the operation under the conditions of the two different media, they adjusted various parameters gradually, carefully recorded any issues that arose, and successfully completed the test run with oil-coal slurry. Additionally, thorough verification and performance testing were carried out on the modified domestic feed pumps. The results show that the commissioning of the domestically produced coal slurry feed pump under normal medium conditions was a complete success. The trial operation of the company’s first domestically produced coal slurry feed pump under oil-coal slurry conditions was completed successfully, providing a reliable reference for the localization of key equipment as well as the adjustment of coal liquefaction processes in secondary and tertiary plants.
In March 2023, the prototypes of the \"three-plunger high-temperature and high-pressure slurry transfer pump\" and the \"five-plunger high-temperature and high-pressure slurry transfer pump\", developed jointly by **Energy Group Chemical Company and Shanghai Fost Fluid Machinery Co., Ltd., successfully passed the product appraisal organized by the China Machinery Industry Federation and the China General Machinery Industry Association. The expert group unanimously agreed that the project outcomes have generally reached an internationally advanced level, marking the successful full entry of high-pressure coal slurry plunger pumps in China into the \"domestic production era\". The high-pressure slurry feed pump for direct coal liquefaction is a high-viscosity, high-pressure reciprocating plunger pump, and it represents the core equipment in coal direct liquefaction projects on a million-ton scale; originally, imported products were used for this purpose. **Since 2015, the Coal-to-Oil division of the Energy Group Chemical Company has established a specialized technical task force to work on the development of \"three-plunger high-temperature and high-pressure slurry transfer pumps.\" Technical research and development efforts were carried out in areas such as structural design, material selection, sealing and flushing systems, as well as equipment manufacturing; the development of these pumps was completed in July 2020. The industrial prototype was installed and put into operation at the site of the pilot project for direct coal liquefaction. To date, it has been operating steadily for over 12,000 hours, with all performance indicators meeting the design requirements. This has led to the successful development and application of domestically produced high-viscosity, high-pressure reciprocating piston pumps, thereby ensuring technological independence and control. To further achieve larger-scale equipment for high-flow conditions, building on the research and development of three-plunger high-temperature and high-pressure slurry pumps, the company collaborated with Shanghai Fost Fluid Machinery Company to develop a high-flow five-plunger high-temperature and high-pressure slurry pump. The five-plunger high-temperature and high-pressure slurry transfer pump introduces a pioneering combined flushing system of synchronous backflow injection flushing and seal lubrication, which solves the problem of particles entering the plunger sealing area. “The successful development of the \"three-plunger high-temperature and high-pressure slurry transfer pump\" and the \"five-plunger high-temperature and high-pressure slurry transfer pump\" has filled a gap in related fields in China. It has effectively addressed the issue of local production of key equipment for direct coal liquefaction, enabling significant reductions in project investment and equipment maintenance costs. This advancement provides a solid technical foundation for the practical application of second-generation direct coal liquefaction technologies, and it offers important support for the selection of equipment for large-scale coal chemical projects in China.
【Ten Years of Rapid Development in Chemical Engineering Equipment】970–2021: Acceleration toward domestic production of high-temperature, high-pressure forced-circulation hot water pumps for heavy-duty equipment https://bbs.hcbbs.com/thread-3909693-1-1.html (Source: Huahai Chuanliu – Haichuan Network)