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"Four gas" refers to coalbed methane, coke oven gas, natural gas, and coal gas. At present, Shanxi Province produces about 19 billion cubic meters of coalbed methane per year, with a utilization rate of only 27.43%. The annual output of coke oven gas is about 40 billion cubic meters, of which 60% is hydrogen, and the purification cost is very low. At the same time, the coke oven Gas can also synthesize natural gas. Mao Zongqiang, a professor at Tsinghua University and chairman of the China Hydrogen Power Professional Committee, recently pointed out in Shanxi that the use of low-carbon energy sources in Shanxi should be used first for low-carbonization of fossil fuels, which boils down to “four gasesâ€. He believes that Shanxi is fully qualified to take the lead in the country and even the world to achieve "four gas" large-scale application, to create a world-class low-carbon energy demonstration base.
Shanxi Province has accumulated rich experience in the comprehensive utilization of “Four Gasâ€. In 2008, Yangmei Coal Group utilized 345 million cubic meters of coalbed methane and sales revenue of 189 million yuan. At present, there are seven coalbed methane gas storage tanks, total gas storage capacity of 180,000 cubic meters, and 120,000 households for urban residents. The Yangmei Coal Group also launched a coalbed methane roasting alumina project. The first phase of the project has been officially put into production. The annual output of alumina is 400,000 tons, and the daily consumption of coalbed methane is 360,000 cubic meters. The annual use of coalbed methane is 120 million cubic meters. In addition, the Yangmei Coal Group has carried out CBM power generation. The CBM power plant invested and constructed has three power stations, and consumes 0.574 billion cubic meters of pure CBM annually. In order to accelerate the development of the coalbed methane industry and broaden the industrial chain, Yangmei Group is planning to build an annual production capacity of 20,000 tons in Shihgang, 50,000 tons of liquefied coalbed gas in Sijiazhuang, and purification of low-concentration coalbed methane.
Shanxi's other large-scale coal companies, such as coking coal, Tongji, Shanxi Coal, Chunan, etc., have combined their own characteristics to carry out comprehensive utilization of coalbed methane. The south of the Qinshui Basin in Shanxi Province has been identified as a national CBM industrialization base, and Shanxi will use this to maximize the clean and efficient utilization of coalbed methane.
There are also many methods for the application of coke oven gas, including direct combustion, power generation, urea production, methanol production, natural gas, and steelmaking. Shanxi Fengxi Huarui Coal Chemical Industry Co., Ltd. used coke oven gas, coal gas (semi-water gas), natural gas to produce synthetic ammonia, and co-produced urea. The 18/30 project created a nationwide triad of gas, which has now become the coal of Shanxi Province. The landmark project of chemical development. The project produced a total of 185,900 tons of synthetic ammonia and 329,600 tons of urea in 2009. In the case of a general loss in the nitrogen fertilizer industry in the country, Fengxi Huarui profited at a profit of RMB 44.88 million, nearly three times the annual plan target. The company plans to start construction of the second phase of the 18/30 project this year. It is expected to be completed and put into production in June 2011. At that time, Fengxi Huarui will form an annual production capacity of 360,000 tons of synthetic ammonia and 600,000 tons of urea. In the next five years, Shanxi Province will learn from the Fengxi Huarui Company model and build three sets of 18/30 projects in three regions across the province.
Methanol, as a new type of fuel and chemical raw material, has a significant low-carbon effect, while coke oven gas can produce methanol, and the cost can compete with methanol produced in the Middle East with the lowest production cost in the world. Since the birth of the first coke oven gas to produce methanol in 2005, Shanxi has produced methanol in almost all coking parks for several years. On May 25th, 2009, Shanxi Tianji Yu'an Chemical Co., Ltd. successfully produced 300,000 tons of coke oven gas to produce methanol. The annual recycling of coke oven gas was 400 million cubic meters. The project adopted a number of patents with domestic independent intellectual property rights. The technology is the largest methanol plant for coke oven gas produced and put into operation in China. It has laid a technological foundation for the clean and highly efficient use of coke oven gas in the "Twelfth Five-Year Plan" in Shanxi.
In contrast, coke oven gas makes liquefied natural gas can produce better economic benefits, in the initial investment scale is not higher than the coke oven gas to methanol, and post-production project profit rate of up to 40%. Hexin City, Shanxi Province, Taicun Taigong coke oven gas comprehensive utilization of new technology demonstration project (a phase of the project), using coke oven gas as raw material, the use of physical separation and cryogenic liquefaction technology to produce hydrogen and liquefied natural gas clean energy. The project has a total investment of 800 million yuan, of which the first phase of the investment of 400 million yuan has been put into production. It can produce liquefied natural gas of 076 million cubic meters and 186 million cubic meters of hydrogen per year, and realizes an output value of 400 million yuan and profits of nearly 40 million yuan. Both liquefied natural gas and hydrogen are clean energy. If the equivalent heat is calculated, the recovered liquefied natural gas and hydrogen are equivalent to 109,000 tons of refined oil. Industry experts have frankly stated that the success of this process will enable the Shanxi coke industry to obtain “redemption†in the context of a low-carbon economy and will soon be promoted in the coking industry in the province in the next few years.
In the next five years, Shanxi Province Guoxin Energy Development Group Co., Ltd. will invest 10 billion yuan to fully promote the “four-air-one†strategy, vigorously implement the “four-gas†mixed combustion, and build five liquefaction projects in five regions across the province. To carry out demonstrations of hydrogen-energy compressed natural gas fuels in automotive and industrial applications.
Nielian Ren, vice governor of Shanxi Province, pointed out recently that the construction of “Four Gas†industry integration is of great significance for improving the safety management level of coal mines, developing a low-carbon economy, and promoting energy conservation and emission reduction. The province must strengthen gas source development and achieve clean and efficient use. And strive for the support of the relevant state departments. It is predicted that by 2015, the annual supply of “four gases†in Shanxi Province will reach 14.8 billion cubic meters; by 2020, the annual supply of “four gases†will reach 31 billion cubic meters. By then, Shanxi's economic development mode will shift from a resource-dependent model to an innovation-driven model, and will create a model for the effective use of low-carbon energy throughout the country and even around the world.
Shanxi vigorously promotes the integration of "four gases" industry
At the Shanxi Provincial Development and Reform Working Conference held on January 18th, Shanxi Province has accelerated the implementation of the “Four Gas†industry integration project as the main promoter of energy conservation and emission reduction and the development of low-carbon economy during this year and the “Twelfth Five-Year Plan†period. The use of emerging strategic industries to promote the development of Shanxi's economy and efforts to build a world-class low-carbon energy demonstration base.