【Ten Years of Rapid Development in Chemical Equipment】The First Furnace for Anhui Linquan Chemical’s 200,000-ton/year Methanol Project from 1968 to 2008

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This post was last edited by Desert Fish on 2022-12-21 at 08:44. Watch the ten-year development of chemical processing equipment; praise the prosperity and strength of modern China. Replies are rewarded – discussions are welcome. ------------------------------------------- Anhui Linquan Chemical’s 200,000-ton/year methanol project: the true first furnace for aerospace use. Anhui Jinmei Zhongneng Chemical Co., Ltd., formerly known as Linquan Fertilizer Factory, is headquartered in Linquan County, Anhui Province. The company was founded in 1970. At the beginning of 2007, it formed a joint venture with Shanxi Jincheng Coal Industry Group, one of the world’s top 500 companies, and was renamed \"Anhui Jinmei Zhongneng Chemical Co., Ltd.\". It is now a comprehensive coal chemical enterprise that engages in the production of fertilizers, chemicals, combined heat and power generation, equipment processing and installation, as well as the manufacture of pressure vessels. It ranks among the top 20 nitrogen fertilizer producers in China. The company covers an area of 3,800 mu and has more than 2,500 employees. The plant’s annual production capacity is 1.5 million tons of ammonia alcohol and 1.8 million tons of urea, among other products. The products are exported to international markets such as India, Vietnam, Malaysia, and Australia. Anhui Linquan Chemical’s 200,000 tons per year methanol project includes construction elements such as gasification units, air separation systems, shift reactors, purification equipment, compression systems, synthesis units, distillation units, and utility systems. The gasification unit utilizes a space furnace demonstration unit with a daily coal feeding capacity of 750 tons. Project construction progress (construction period: 24 months): Construction began in October 2006; civil engineering work was completed in October 2007; mechanical installation was finished in August 2008; successful commissioning with the first feed was achieved at 9:08 on October 31, 2008. After two rounds of rectification, the gasification unit achieved stable operation on April 15, 2009. The on-site calibration of the HT-L space coal gasification unit, which is part of Anhui Linquan Chemical Co., Ltd.’s project to upgrade its CO+H2 feedstock production capacity to 1 million Nm3 per day, was carried out from October 23 to October 26, 2009. The space furnace in Anhui Linquan is truly the first of its kind in the field of space technology, as it was the first unit of this type to be built; it operated continuously after being started up until qualified products were produced, with only a few interruptions due to valve replacements or brief shutdowns. On August 24, 2009, the plant had to be shut down for over 6 days for maintenance due to the inability to build pressure in the pulverized coal hopper; after it was restarted, there was one instance of a shutdown ； From April 15, 2009, to April 15, 2010, the gasifier was in operation for a total of 326 days (out of 365 calendar days), resulting in an operational rate of 89.3%. From January 2, 2010, to April 1, 2010, the gasification unit and subsequent processes were in continuous operation (24 hours a day) for 91 days ； The longest recorded continuous operation time for the gasifier burner is 125 days. In 2010, the gasification unit was in operation for a total of 338 days, achieving an operational rate of 92.58%; the gasification furnace operated continuously for 24 hours a day for 91 days ； The longest cumulative operating time for the gasifier burner is 125 days. A total of 183,026 tons of methanol have been produced, with 1,392 kg of raw coal required per ton of methanol produced ； Steam 2080kg ； Power consumption: 327 kW·h. The plant was shut down at 0:27 on October 11, 2011 due to air separation issues. It has been in operation since then for 156 days, and maintenance is planned for 10–15 days. The shutdown was originally scheduled as part of the preparations for connecting it to the second phase of the system, but it stopped operating due to a minor fault. The single system of the space furnace has stopped working, but the noise from the old factory persists as before. Maintenance. Previously, the coal used in space furnace production included: Shenmu coal, a mixture of Shenmu and Xinzheng coal, Xinjiang coal, mixtures of Xinjiang and Xinzheng coal as well as mixtures with Jincheng coal, Gansu coal, Xinjiang Baoli coal, a combination of Shenmu coal and Jincheng anthracite powder, and Shenmu coal mixed with high-sulfur Jincheng coal (with a sulfur content of 2.35% in the raw coal), among others. Single combustion of 5 different coal types and mixed combustion of multiple coal blends were carried out back to front. Currently, the coal used is mainly Shenmu coal, accounting for about 60% of the total. The reaction temperature is around 1500 degrees Celsius, as the melting point of the mixed ash is approximately 1300 degrees Celsius; the conversion rate of C is around 95%. 　　 In 2010, Linquan Chemical’s HT-L pressurized coal gasification project won the Special Prize from the China Nitrogen Fertilizer Industry Association, the Award for Outstanding Contributions to Science and Technology in Fuyang City, and the Special Prize for Scientific and Technological Progress in Linquan County. Throughout the year, the company received **11.76 million in project funding. In particular, the efficient operation of the coal gasification project provided solid technical support for the company’s sustainable development, enabling it to earn the title of Innovative Enterprise in Anhui Province. 　　 As of November 2010, the space furnace installation in Linquan had been in operation for nearly three years, and the various performance metrics were quite satisfactory at that time. Since factories are focused on efficiency, sometimes bituminous coal powder and coal with a low ash melting point are mixed in, while it is also necessary to take into account the conditions of the furnace, striving to optimize its operation to ensure long-term operation. The intelligent upgrade project for the 600,000-ton ammonia synthesis plant at Jinmei Zhongneng in Linquan, Anhui, which began construction in June 2017, used space furnaces as the gasification units.