The Clean and Efficient Gasification Gas Comprehensive Utilization Project of Gansu Jingyuan Coal and Electricity Co., Ltd. has been approved

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The environmental impact assessment for Jingyuan Coal and Electricity’s project on the comprehensive utilization of clean and efficient gasified gas was approved recently. Author/Source: Coal Chemical Engineering 114 Forum Date: 2020-04-13 Clicks: 44 Project Name: Jingyuan Coal and Electricity Co., Ltd. – Jingyuan Coal and Electricity Clean and Efficient Gasification Gas Comprehensive Utilization (Relocation and Transformation) Project
Location of Construction: Yindong Industrial Park, Baiyin High-Tech Industrial Development Zone, Baiyin City
Constructor: Jingyuan Coal and Electricity Co., Ltd., Gansu
Environmental Assessment Agency: Gansu Tianchen Environmental Engineering Co., Ltd.
Project Overview: The project uses coal from Jingyuan as raw material and employs pressurized coal gasification technology, along with domestically developed isothermal shift processes, low-temperature methanol washing for desulfurization and decarburization, liquid nitrogen washing for purification, and low-pressure ammonia synthesis to produce liquid ammonia. As by-products, liquid carbon dioxide and sulfur are generated. The liquid ammonia produced is then used as a raw material for the manufacture of urea and melamine. Relevant auxiliary facilities and utility systems are also constructed as part of this project. The project is implemented in two phases. In Phase 1, the production capacity is 300,000 tons per year of ammonia, 350,000 tons per year of urea, 20,000 Nm3/h of (H2+CO), 40,000 tons per year of methanol, 50,000 tons per year of liquid carbon dioxide, 60,000 tons per year of melamine, 50,000 tons per year of urea solution, 1,924 tons per year of sulfur, and 2,500 tons per year of catalysts. The gas production (H2+CO) unit uses a PSA purification process. In Phase 2, the production capacities are 300,000 tons per year of ammonia, 350,000 tons per year of urea, 10,000 Nm3/h of (H2+CO), and 60,000 tons per year of methanol. Upon completion of the two phases of construction, the production capacity will ultimately amount to 600,000 tons per year of synthetic ammonia, 700,000 tons per year of urea, 100,000 tons per year of methanol, 50,000 tons per year of liquid carbon dioxide, 60,000 tons per year of melamine, 50,000 tons per year of urea solution, and 30,000 Nm3/h of (H2+CO). The total investment for the project amounts to 5,286,406,800 yuan, of which 4,296,500,000 yuan is allocated to environmental protection measures, accounting for 8.1% of the total investment. The Clean and Efficient Coal-to-Gas Comprehensive Utilization Project of Gansu Jingyuan Coal and Electricity Co., Ltd. is located in the Yindong Industrial Park of the Baiyin High-Tech Industry Development Zone in Baiyin City, Gansu Province. It uses coal from Jingyuan as raw material to produce products such as synthetic ammonia, urea, methanol, melamine, and urea solutions. At the same time, high-quality raw materials such as hydrogen and carbon monoxide can be supplied to other enterprises located in the park, thereby creating a upstream and downstream industrial chain that maximizes resource utilization and minimizes pollutant emissions. For this project, the gasification technology recommended is the pulverized coal gasification unit developed by Changzheng Chemical Engineering Co., Ltd., which possesses domestic independent intellectual property rights. It is understood that the project will be implemented in two phases; the first phase is scheduled to be ready for construction by the end of 2019, with operation commencing by the end of 2021 ； The construction period for the second phase is planned to be two years. At present, the project has completed preliminary tasks such as registration, geological surveys, safety assessment reviews, and the preparation of environmental impact reports; other tasks such as land acquisition and water resource evaluations are currently in progress. Upon completion of the project, it will be able to convert approximately 1.8 million tons of raw coal annually on-site, enabling annual production of 700,000 tons of urea, 100,000 tons of methanol, 216 million Nm3 of (CO+H2), 60,000 tons of melamine, 50,000 tons of urea solution, and 50,000 tons of food-grade liquid CO2. Additionally, products such as liquid oxygen, liquid nitrogen, liquid argon, and catalysts will also be produced. Phase 1: Construct 1 new synthetic ammonia plant with an annual capacity of 300,000 tons. The gasification unit of this plant will include 1 pulverized coal gasifier, with an effective gas production capacity of 120,000 Nm3/h. Additionally, units for shift reaction, desulfurization and decarburization, liquid nitrogen washing, ammonia refrigeration, and ammonia synthesis will be built as part of this project ； One air separation unit is installed as a supporting facility, to supply oxygen and nitrogen to the gasification unit and the ammonia synthesis unit; the design capacity of this air separation unit is 40,000 m³/h (based on oxygen) ； Construct 1 set of sulfur recovery unit to recover 1,924 tons of sulfur per year ； Construct 1 methanol synthesis unit with an annual production capacity of 40,000 tons of methanol ； Construct 1 set of PSA gas generation unit, with a production capacity of 20,000 Nm3/h for (H2+CO) ； Construct 1 set of liquid carbon dioxide production facility with an annual output of 50,000 tons of liquid carbon dioxide ； Build 1 set of urea production plant, with an annual production capacity of 350,000 tons ； Construct 1 set of urea **solution production facility, with an annual output of 50,000 tons of urea **solution ； Construct 1 set of melamine production facility with an annual output of 60,000 tons of melamine ； Build 1 set of catalyst production facilities with an annual output of 2,500 tons of various catalysts, along with supporting utility facilities such as circulating water systems and boiler rooms ； Phase II project: Construct 1 new synthetic ammonia plant with an annual capacity of 300,000 tons. The gasification unit of this plant will include 1 pulverized coal gasifier, with an effective gas production capacity of 120,000 Nm3/h. In addition, units for shift reaction, desulfurization and decarburization, liquid nitrogen washing, ammonia refrigeration, and ammonia synthesis will also be built as part of this project ； One air separation unit is installed as a supporting facility, to supply oxygen and nitrogen to the gasification unit and the ammonia synthesis unit; the design capacity of this air separation unit is 40,000 m³/h (based on oxygen) ； An additional methanol production capacity of 60,000 tons per year will be added, bringing the total capacity of the methanol plant to 100,000 tons per year ； New capacity for (H2+CO) production: 10,000 Nm3/h; the PSA gas generation system can produce up to 30,000 Nm3/h ； One set of urea production plant will be constructed, with an annual production capacity of 350,000 tons.