"40000Nm3/h atmospheric pressure circulating fluidized bed coal gasification for clean industrial gas technology"

On November 13, the “400000Nm3/h atmospheric pressure circulating fluidized bed coal gasification to clean industrial gas technology” co-developed by the Institute of Engineering Thermophysics of the Chinese Academy of Sciences and Jinan Huangtai Gas Furnace Co., Ltd. was organized by the China Petroleum and Chemical Industry Federation. The identification of scientific and technological achievements.

An appraisal committee composed of authoritative experts in this field from well-known universities, research institutes, design institutes, and companies in China, who is the director of the Chinese Academy of Engineering, Qin Yuxi, heard reports on the project's work reports, technical reports, on-site test reports, and application reports. Submitted technical information. After questioning and discussion, the appraisal committee believed that the technology had independent intellectual property rights, excellent performance, clean and environmental protection, and reached the international advanced level, and they all agreed to pass scientific and technological achievements appraisal.

This technology is the world's first set of 40000Nm3/h atmospheric circulating fluidized bed coal gasification to clean industrial gas technology, which has been put into industrial operation. It integrates multi-stage self-balanced material return technology, non-wind chamber air distribution technology, central coal supply technology, and high temperature Air preheating technology, dust pre-separation and cooling technology, and a number of patents and proprietary technologies such as static material layer sealing and countercurrent slagging technology. The circulating fluidized bed gas stove developed by using this technology has stable operation, wide adaptability of coal type, stable gas and heat value, no tar in gas, no discharge of waste gas, high efficiency of cold gas, low carbon content of ash residue, and continuous With the advantages of high availability, it can be widely applied to industrial gas production in industries such as chemical, building materials and non-ferrous metal smelting.

Demonstration project user Xinping Xinfa Huayu Alumina Co., Ltd., subordinate to Xinfa Group, has three 40,000 Nm3/h circulating fluidized bed coal gasifiers in the first phase and the second phase of the replacement of the two-stage fixed bed gas furnace. Operation to provide industrial gas for alumina roasters. Since the demonstration project has been running, the system has been operating stably. Under the condition that there is no spare furnace, the continuous operation rate reaches 92%, and the single furnace continuously and stably runs for more than 140 days; the performance test shows that when the full load operation is performed, the low calorific value of gas reaches 1430 kcal/ Nm3, the cold gas efficiency reached 78.6%, the gas yield reached 2.99Nm3/kg, the carbon conversion rate reached 82.9%, and the outbound gas dust content was less than 25mg/Nm3. After replacing the fixed-bed gas furnace with the circulating fluidized bed coal gasifier adopting this technology, the cost of gas production is reduced to half, and tar separation and transport are not required, and the economic and environmental benefits are significant.

Zhu Junqiang, director of the Institute of Engineering Thermophysics, Chinese Academy of Sciences, Ji Jianguo, chairman of Jinan Huangtai Gas Furnace Co., Ltd., and Pan Shigang, deputy general manager of Xinfa Group attended the meeting and delivered speeches.

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