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Petrochemical industry, referred to as petrochemical industry. Generally refers to the chemical industry with oil and natural gas as raw materials. It has a wide range of products. Crude oil is cracked (cracked), reformed and separated to provide basic raw materials such as ethylene, propylene, butene, butadiene, benzene, toluene, xylene, naphthalene, etc.
Natural gas refers to all natural gases existing in nature, including gas formed by various natural processes in the atmosphere, hydrosphere and lithosphere (including oilfield gas, gas field gas, mud volcanic gas, coal bed methane and biogenic gas, etc.).
Coal chemical industry refers to the process in which coal is converted into gas, liquid and solid fuel and chemicals by chemical processing. It mainly includes coal gasification, liquefaction, retorting, tar processing and calcium carbide acetylene chemical industry.
The electric power industry converts coal, oil, natural gas, nuclear fuel, water energy, marine energy, wind energy, solar energy, biomass energy and other primary energy into electric energy through power generation facilities, and then supplies them to users through transmission, transformation and distribution systems.
Sewage treatment the process of purifying sewage to meet the requirements of water quality discharged into a water body or reused. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and more and more into the daily life of ordinary people.
The paper industry is an industrial sector that makes all kinds of paper and paperboard. It includes the pulp manufacturing industry which uses wood, reed, bagasse, rice straw, wheat straw, cotton straw, hemp stalk, cotton and other raw materials to produce pulp, paper and paperboard industry, and processing paper manufacturing industry for coating, polishing, gluing, laminating and other processing paper and font plate.
Alumina: chemical formula: Al2O3. It is a kind of high hardness compound with melting point of 2054 ℃ and boiling point of 2980 ℃. It can be ionized at high temperature. It is commonly used to manufacture refractory materials.
Mineral resources are the products of the crust in its long-term formation, development and evolution. They are formed by the accumulation of natural minerals under certain geological conditions through certain geological processes. Different geological processes can form different types of minerals.