"Challenge of Disasters" is the idea of ​​Shanxi Province to propose a new type of energy and industrial base. It will vigorously develop industrial chains and industrial clusters that focus on deep processing of coal, and convert the waste and pollutants generated during the coal production process into as much as possible. Available resources. Comprehensive utilization of coal gangue has become an important part of Shanxi's circular economy industrial chain.
Coal gangue is a kind of solid waste produced during coal mining and utilization. According to statistics, the current coal gangue reserves in Shanxi Province has reached 1 billion tons, accounting for 1/3 of the country's total stock, the province's large coal gangue hill has accumulated nearly 10,000 seats, covers an area of ​​about 250,000 mu, and is still 10% per year. The left and right speeds increase.
This has led to a series of environmental problems: Overflowing water from coal gangue has brought high salinity and high hardness to groundwater, resulting in salinization of the soil, which has reduced the yield of crops and even eliminated them. Coal gangue has also been dumped arbitrarily and has caused river blockage, desertification, and large scales. Soil erosion in the area; carbon monoxide, sulfur dioxide and other toxic and harmful gases generated from the spontaneous combustion of coal gangue have become the main culprit of atmospheric pollution in Shanxi.
In order to scientifically use coal gangue and reduce environmental pollution, Shanxi Province has successively introduced regulations for energy conservation in recent years, formulated plans for the development of circular economy, formulated and implemented local regulations such as certification measures for comprehensive utilization of resources, and increased investment. Guide enterprises through the development of circular economy, extending the industrial chain, greatly mobilized the enthusiasm of the company's comprehensive utilization of resources. The roads used by coal gangue are getting wider and wider.
Shanxi Province has actively increased its scientific and technological content, tapped the utilization value of coal gangue, and changed the “waste of money†as “a treasure that throws moneyâ€:
In 2004, the coal gangue composite microbial new fertilizer experiment jointly developed by Lu'an Vocational and Technical College and Beijing Forestry University was successful. The authoritative department detected that the use of coal gangue compound microbial fertilizer green pepper, corn, millet yield of 9.3%, 0.4% and 10.3%, respectively, than the use of common chemical fertilizers of the same type of crop; crude fiber, nitrate and other content greatly reduced. This gangue compound microbial fertilizer has the characteristics of non-toxic, harmless, non-polluting, high quality, and high efficiency.
Shanxi Jinyang Calcined Kaolin CO., Ltd. uses coal gangue to produce high-grade calcined kaolin. At present, it has formed 5 product series and annual sales income of 150 million yuan, making it the largest manufacturer of high-grade calcined kaolin in Asia.
In March of this year, the latest scientific and technological achievements in the use of coal gangue to produce LN-4A zeolite, which is a substitute for phosphorous, opened up new ways for the comprehensive utilization of coal gangue through expert appraisals organized by the Shanxi Science and Technology Department. According to sources from related parties, the related products produced by coal-based gangue additive LA-4A zeolite technology can be widely used in daily chemical, petrochemical, biochemical and other industries. The added value of products is high, and the economic and social benefits are very impressive. .
Change the sewage ash to clear water blue sky, Shanxi Province plans to build coal gangue power plant, using coal gangue power generation. Shanxi Jiaojiao Group Gujiao Power Plant, which integrates coal washing and power generation, can use 5 million tons of coal and coal gangue each year, and directly generate economic benefits of more than 300 million yuan. Coal-fired electricity production mode enables the power plant to generate 30% less water than the average power plant, smoke elimination rate of 99%, environmental protection and desulfurization of 93%, not only save energy, water, reduce pollution, but also reduce the cost of power generation.
At present, the comprehensive development and utilization of coal resources led by a group of national key enterprises such as the coal-gangue coal-fired power plant are gradually being formed in Shanxi, and the ecological and economic benefits of comprehensive utilization of coal gangue are increasingly highlighted. Coal gangue, which had been piled up and difficult to control in the past, has now become a hot resource.
In the practice of building coal gangue power plants, Shanxi Province has continuously absorbed and summarized domestic and foreign advanced technology and management experience, and put forward the main focus of combined heat and power generation in central cities, comprehensive utilization of coal gangue in craters, and urban sewage reuse, based on the adjustment of industrial structure, and Construct coal gangue power plants in industrial parks, central cities, and Hangkou, implement the coal-fired high-energy-consumption linkage strategy, develop a batch of thermal power units with stand-alone capacity of more than 50,000 kilowatts, and support circulating fluidized bed boilers.
The industrial chain of Shanxi Coking Co., Ltd. is taken as an example: One of the commodities produced from coal gangue is the power supply coking plant, and the coal gangue and coke oven gas, coke products of the coking plant, are used as raw materials for power plants. At the same time, the coking plant's coke-removing wastewater is cooled by the power plant's sewage treatment plant and can be supplied to the coking plant again as a coke-repelling water. In this way, a reusable closed loop is formed, which improves the overall utilization of resources.
According to the Shanxi provincial power plan, the construction of coal gangue power stations in Shanxi Province in 2008 will reach 1.57 million kilowatts, accounting for about one-third of the total size of the entire year's power station construction.
Coal gangue is a kind of solid waste produced during coal mining and utilization. According to statistics, the current coal gangue reserves in Shanxi Province has reached 1 billion tons, accounting for 1/3 of the country's total stock, the province's large coal gangue hill has accumulated nearly 10,000 seats, covers an area of ​​about 250,000 mu, and is still 10% per year. The left and right speeds increase.
This has led to a series of environmental problems: Overflowing water from coal gangue has brought high salinity and high hardness to groundwater, resulting in salinization of the soil, which has reduced the yield of crops and even eliminated them. Coal gangue has also been dumped arbitrarily and has caused river blockage, desertification, and large scales. Soil erosion in the area; carbon monoxide, sulfur dioxide and other toxic and harmful gases generated from the spontaneous combustion of coal gangue have become the main culprit of atmospheric pollution in Shanxi.
In order to scientifically use coal gangue and reduce environmental pollution, Shanxi Province has successively introduced regulations for energy conservation in recent years, formulated plans for the development of circular economy, formulated and implemented local regulations such as certification measures for comprehensive utilization of resources, and increased investment. Guide enterprises through the development of circular economy, extending the industrial chain, greatly mobilized the enthusiasm of the company's comprehensive utilization of resources. The roads used by coal gangue are getting wider and wider.
Shanxi Province has actively increased its scientific and technological content, tapped the utilization value of coal gangue, and changed the “waste of money†as “a treasure that throws moneyâ€:
In 2004, the coal gangue composite microbial new fertilizer experiment jointly developed by Lu'an Vocational and Technical College and Beijing Forestry University was successful. The authoritative department detected that the use of coal gangue compound microbial fertilizer green pepper, corn, millet yield of 9.3%, 0.4% and 10.3%, respectively, than the use of common chemical fertilizers of the same type of crop; crude fiber, nitrate and other content greatly reduced. This gangue compound microbial fertilizer has the characteristics of non-toxic, harmless, non-polluting, high quality, and high efficiency.
Shanxi Jinyang Calcined Kaolin CO., Ltd. uses coal gangue to produce high-grade calcined kaolin. At present, it has formed 5 product series and annual sales income of 150 million yuan, making it the largest manufacturer of high-grade calcined kaolin in Asia.
In March of this year, the latest scientific and technological achievements in the use of coal gangue to produce LN-4A zeolite, which is a substitute for phosphorous, opened up new ways for the comprehensive utilization of coal gangue through expert appraisals organized by the Shanxi Science and Technology Department. According to sources from related parties, the related products produced by coal-based gangue additive LA-4A zeolite technology can be widely used in daily chemical, petrochemical, biochemical and other industries. The added value of products is high, and the economic and social benefits are very impressive. .
Change the sewage ash to clear water blue sky, Shanxi Province plans to build coal gangue power plant, using coal gangue power generation. Shanxi Jiaojiao Group Gujiao Power Plant, which integrates coal washing and power generation, can use 5 million tons of coal and coal gangue each year, and directly generate economic benefits of more than 300 million yuan. Coal-fired electricity production mode enables the power plant to generate 30% less water than the average power plant, smoke elimination rate of 99%, environmental protection and desulfurization of 93%, not only save energy, water, reduce pollution, but also reduce the cost of power generation.
At present, the comprehensive development and utilization of coal resources led by a group of national key enterprises such as the coal-gangue coal-fired power plant are gradually being formed in Shanxi, and the ecological and economic benefits of comprehensive utilization of coal gangue are increasingly highlighted. Coal gangue, which had been piled up and difficult to control in the past, has now become a hot resource.
In the practice of building coal gangue power plants, Shanxi Province has continuously absorbed and summarized domestic and foreign advanced technology and management experience, and put forward the main focus of combined heat and power generation in central cities, comprehensive utilization of coal gangue in craters, and urban sewage reuse, based on the adjustment of industrial structure, and Construct coal gangue power plants in industrial parks, central cities, and Hangkou, implement the coal-fired high-energy-consumption linkage strategy, develop a batch of thermal power units with stand-alone capacity of more than 50,000 kilowatts, and support circulating fluidized bed boilers.
The industrial chain of Shanxi Coking Co., Ltd. is taken as an example: One of the commodities produced from coal gangue is the power supply coking plant, and the coal gangue and coke oven gas, coke products of the coking plant, are used as raw materials for power plants. At the same time, the coking plant's coke-removing wastewater is cooled by the power plant's sewage treatment plant and can be supplied to the coking plant again as a coke-repelling water. In this way, a reusable closed loop is formed, which improves the overall utilization of resources.
According to the Shanxi provincial power plan, the construction of coal gangue power stations in Shanxi Province in 2008 will reach 1.57 million kilowatts, accounting for about one-third of the total size of the entire year's power station construction.
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