Huaibei Mining's Green Coal Salt Integration

Anhui Huaibei Mining Group Co., Ltd. is one of the 13 large-scale coal bases planned and constructed by the state, and the largest coal production and processing and processing base in East China. When entering the booming coal city of Huaibei City, people are surprised by its clean and tidy. Now, Huaibei Mining Group is actively exploring coal-saltification integration projects.

The coking project is a leading project in the integrated coal-saltification project. Relying on the advantages of coking coal, limestone and salt rock resources in northern Anhui, Huaibei Mining Group has extended its industrial chain, developed coal chemical and salt chemical industry, realized green mining, built ecological mining areas, and will eventually upgrade its products and build Huaibei Mining Area into a national first-class coal. Coking electricity and coalification - salinization base. This project is the systematic industrial project with the largest scale, the highest degree of intensification, and the lowest production cost in China.

This project gives full play to the advantages of rich coking coal and complete coal types in the Huaibei coalfield. A central coal washing plant with an annual capacity of 12.5 million tons was built in the Linfen mining area, and a coking plant with an annual coking capacity of 4.4 million tons and an installed capacity of 1.2 million kilowatts were built. Coal slime gangue low calorific value fuel power plant project. On this basis, the company will form a coal coking and electricity industrial chain that integrates coal mining, washing and processing, coal coking and coal gangue power generation. At the same time, relying on limestone rock resources in northern Anhui, the project will simultaneously build an annual production capacity of 800,000 tons of caustic soda and an annual output of 1 million tons of polyvinyl chloride. Among them, the coking project started construction in June 2005 and is scheduled to be completed and put into operation by the end of this year. The preliminary work of the slime gangue power plant project was completed and is currently under construction.

In addition to this integrated coalification and salinization industry chain, Huaibei Mining Group also extends three coal chemical industry chains: First, coke oven gas can be used to produce 400,000 tons of methanol annually and some follow-up products; second, in coking The company can obtain 200,000 tons of coal tar annually, use coal tar to develop industrial naphthalene and other fine chemical products, and thirdly, it can refine and process crude benzene, a co-product of the coke project, and can annually produce 50,000 tons of pure benzene and 14,000 tons of toluene. In order to fill the gap in deep processing of large-scale coking benzene in Anhui.

At the same time of construction, the company adhered to the principle of “resource development, deep processing, efficient use, and cyclic development”, strictly controlled environmental pollution, and supported the construction of a coal ash brick plant and a cement plant that added calcium carbide slag, converting the waste into industrial raw materials. , eat dry squeezed to achieve waste residue, waste heat, steam closed-circuit utilization.

The company's integration project has formed a major cycle of comprehensive utilization of resources. For example, a large-scale coal gangue gangue comprehensive utilization power plant can digest more than 5 million tons of low calorific value coal, coal slime, and coal gangue generated from coal washing and processing in the new district of the Linfen Coal Preparation Plant, and it is also related to the coal preparation plant, coking plant, and calcium carbide plant. Assortment, arrange production according to the principle of comprehensive balance of water, electricity and gas. Coking plant waste heat, steam power plant reuse, power plant drainage first coking plant coking, and then for coal washing plant coal washing. The slag discharged from the power plant is used as a cement filler and fly ash is used to produce the fly ash bricks. The project has fully realized the closed-loop recycling of water resources and the comprehensive utilization of thermal energy, which not only saves a lot of water, but also reduces environmental pollution, reduces energy consumption, and achieves clean production. At the same time, due to the low fuel cost of the power plant and its stronger market competitiveness, it can not only achieve good economic benefits, but also provide low-cost electricity for downstream high-energy products such as calcium carbide and methanol. Production of caustic soda and polyvinyl chloride from brines in Dingyuan Salt Mine with a reserve of 1.7 billion tons is also a low-cost, large-scale, and highly-efficient production process.

Anhui Huaibei Mining Group Co., Ltd. actively develops the coal coking and chemical industry chain from coal mining, washing and processing, coal coking, coal gangue power generation to fly ash power generation, and the salt chemical industry chain that uses brine to produce caustic soda and polyvinyl chloride. It not only realizes the continuous transformation and appreciation of resources, but also forms a green project for the comprehensive utilization of resources.

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