The first start-up of the conversion unit in Shandong Runyin Biochemical Aerospace Super-large Scale Pulverized Coal Gasification Project Demonstration Project was successful

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The first commissioning of the shift converter unit for the aerospace-scale super-large powder coal gasification project demonstration project of Shandong Runyin Biochemical Co., Ltd. was successful. Author/Source: Gasification World. Date: October 15, 2021. Clicks: 21. On September 26, 2021, the first commissioning of the shift converter unit for the aerospace-scale super-large powder coal gasification project demonstration project (Phase 1), designed by Shandong Sanwei Chemical Group Co., Ltd. (hereinafter referred to as “Sanwei Chemical”), was successful. The shift unit is an important component of the overall process flow in this plant; it is a crucial device within the entire purification section. Whether the shift unit can be started up successfully and operate stably determines whether the other devices can be put into operation smoothly, as well as the balance of the plant’s heating system. The shift unit of this project is the first of its kind in China and abroad to be used in conjunction with a 6.5MPa(G) dry powder coal gasification unit. This unit adopts a more rational adiabatic water-added heat transfer temperature control shift process, and is equipped with 2 shift reactors, utilizing a new three-stage shift process that includes \"adiabatic shift + temperature-controlled shift + temperature-controlled shift\". The design work for this project began in January 2018. The gasification unit represents the first of its kind in China and abroad to utilize a 6.5MPa (G) powder coal gasification process; it is a large-scale facility. All the associated purification units were designed by 3D Chemistry, with new processes being employed for tasks such as shift conversion, low-temperature methanol washing, and refrigeration for low-temperature methanol washing. This single unit is capable of producing millions of tons of synthetic ammonia per year. The project was constructed on the reserved space within the existing plant area; space was limited and the challenges were significant. Throughout the project’s implementation, with the goal of ensuring that the installations were economical, safe, and environmentally friendly, as well as enabling their successful and smooth operation from the outset, the team working on the 3D Chemistry project collaborated closely with the client, patent holders, equipment manufacturers, etc. They conducted repeated discussions and consultations regarding the process plans, flowcharts, equipment types, layout of equipment, and overall site layout for all the processing units under the company’s responsibility. Design and construction were carried out in distinct phases, taking into account the client’s actual conditions and requirements. On September 26, the various units operated in coordination, enabling a successful first-time gas transfer from the gasification unit to the conversion unit. The entire process in the conversion unit was established successfully, and it started up without issues, with stable overall operation. Project Overview: Shandong Runyin Biochemical Co., Ltd. is located in the Ruixing Chemical Industrial Park within the Dongping Industrial Park. The company’s main products and production capacities include 1 million tons per year of synthetic ammonia, 1 million tons per year of urea, and 30,000 tons per year of urotropine. As a subsidiary of Ruixing Group, Runyin Chemical’s Phase III powder coal gasification and aerospace-scale ultra-large powder coal gasification demonstration project was included in the key research and development program at the **Ministry of Science and Technology** level. Construction of this project began in April 2018, with a total investment of 2 billion yuan. It features ultra-large powder coal gasifiers manufactured by Aerospace Changzheng Chemical Engineering Co., Ltd., along with an air separation unit capable of producing 86,000 Nm3/h of oxygen, as well as ammonia synthesis and purification systems. This project boasts advanced process technologies, energy-efficient equipment, and intelligent production operations. Once the project is brought online, it will produce 800,000 tons per year of synthetic ammonia, while adding an additional 1.4 million tons of capacity for urea production. In the two gasification projects that preceded Phase III of Runyin Chemical, Phase I, a pulverized coal gasification project, had a total investment of 1.6 billion yuan; it was completed and put into operation in 2012, with an annual production capacity of 400,000 tons of urea. It was equipped with an air separation unit with a capacity of 35,000 Nm3/h (from Tokyo), which enabled the production of high-quality oxygen and nitrogen products ； The second-phase powder coal gasification project was invested 2.6 billion yuan in; it came online in 2017, with an annual urea production capacity of 3 million tons. It is equipped with an air separation unit with a capacity of 60,000 Nm3/h (produced by Hangyang), which enables the production of high-quality oxygen and nitrogen products.