OUWEI
Heating industry
Urban heating is a kind of heating mode that uses centralized heat source to supply heat energy for production or life to thermal energy users through heating pipe network and other facilities. The types of urban heat sources in China include thermal power plants centralized boiler rooms, decentralized boiler rooms,industrial waste heat, nuclear energy, geothermal energy, solar energy, heat pumps house hold electric heaters and small coal-fired (oil and gas) boilers. The heat sources widely used in central heating are mainly thermal power plants and centralized boiler rooms. Urban heating system is generally composed of three parts, namely heat source, heat supply network and heat user. Heat source also known as thermal production, mainly refers to the production and preparation of certain parameters (temperature, pressure) heat medium boiler room or thermal power plant. Heat supply network is an outdoor heating pipeline system for conveying heat medium hot water supply and production process heat system that directly uses or consumes heat energy.which is the link between heat source and heat user, and plays the role of conveying and distributing heat source. Heat user refers to the indoor heating, ventilation and air conditioning.
OUWEI
Water conservancy industry
Water conservancy project is used to control and allocate the surface water and groundwater in the nature, so as to achieve the purpose of eliminating harm and promoting benefit. Also known as water engineering, Water is an essential and precious resource for human production and life, but its natural existence does not fully meet the needs of human beings. Only by building water conservancy projects can water flow be controlled, flood disasters prevented, and water quantity regulation and distribution be carried out to meet the needs of people's life and production for water resources. Water conservancy projects need to build dams, dikes, spillways, sluices water intakes, channels, aqueduct, raft way, fish way and other different types of hydraulic structures to achieve their goals.
OUWEI
Coal mine gas industry
China is rich in coal resources. According to the mineral resources report of the Ministry of Land and Resources, China's total predicted coal resources amount is 5,569.7 billion tons, with proven resource reserves of 1,043 billion tons. Among China's total fossil energy reserves, 95.60% is coal. Traditional coal chemical industry (including coking, synthetic ammonia, calcium carbide and methanol) is an important pillar industry of China's national economy. lts products are widely used in agriculture, steel, light industry, building materials and other related industries, which play a decisive role in driving national economic growth and ensuring people's life. At present, China ranks first in the production scale of traditional coal chemical products in the world, with the output of synthetic ammonia, methanol calcium carbide and coke accounting for 32%, 28%, 93% and 58% respectively of the global output. Compared with traditional coal chemical technology, modern coal chemical technology (also known as new coal chemical technology)is a kind of clean production technology, is a safe, pollution-free or minimum pollution, coal utilization efficiency ofe highest series of technology. At present, China's key development of new coal chemical industry, mainly including coal to oil, coal to olefin, coal to dimethyl ether, coal to methane gas, coal to ethylene glycol five coal chemical industry. During the period of "twelfth five.year" national major demonstration project of the implementation of the coal chemical industry and the provinces will significantly improve coal chemical industry and the production of the coal chemical projects affiliated industry investment scale, with countries continue to increase the intensity of coal chemical technology and equipment localization, the future demand for high-end pipe fittings products in this field will presents the fast growth of the situation.
OUWEI
Coal coking industry
Coal coking is also called coal high temperature distillation. A coal conversion process in which coal is used as raw material, heated to about 950'c in isolation from air, and coke is produced by high temperature distillation, and gas and coal tar are obtained and other chemical products are recovered at the same time.The main use of coke is to make iron, a small amount of chemical raw materials for calcium carbide, electrode, etc. Coal tar is a black viscous oily liquid containing benzene, phenol, naphthalene, anthracene, phenanthrene and other important chemical raw materials, they are pharmaceutical, pesticide, explosives, dyes and other industrial raw materials, after appropriate treatment can be separated one by one.
OUWEI
Coal washing and dressing industry
Coal processing plants that separate the coal, remove mineral impurities from the raw cal, and divide it into products of different specifications are called coal preparation plants (or coal washing plants).The main products are clean coal and lump coal, in addition to coal and slime and other by-products.Coal preparation plant according to product use divided into :(1)coking coal preparation plant,the production of low ash clean coal, for coking.(2) Steam coal preparation plant, which produces fuel coal for thermal power generation,steam locomotives and boilers and raw coal for chemical industry.
OUWEI
Chemical industry
Chemical industry occupies an important position in the national economy of many countries and is the basic industry and pillar industry in many countries.The speed and scale of the development of the chemical industry have a direct impact on all sectors of the social economy and the annual output value of the world's chemical products has exceeded $15 trilion. The chemical industry is a large polluter because of its various types, complex processes, and diverse products, and the types, quantities and toxicity of pollutants discharged during production.At the same time, chemical products in processing, storage, use and waste disposal and other links are likely to produce a large number of toxic substances that affect the ecological environment and endanger human health. lt is of great practical significance for human economic and social development that chemical industry develops on the road of sustainable development.
OUWEI
Petroleum and petrochemical industry
The oil industry is divided into the upstream, the middle and the downstream. The upstream and downstream industrial chains are closely related with each other, and have a very distinct industrial chain structure and industrial chain information transmission effect. Among them, the upstream business includes the exploration and development of crude oil and natural gas, the middle business is mainly the storage and transportation of oil and gas, and the downstream business covers the process-based business of oil refining chemical industry, natural gas processing and other products distribution and sales of gas station retail. Under normal circumstances, the process in a industry that USES petroleum and natural gas as raw materials to produce petroleum products and petrochemical products is called the petrochemical industry (petrochemical industry for short), while the rest are collectively called the petroleum industry.The main production and operation activities of the petroleum industry include oil and gas exploration, oil and gas field development drilling engineering, ground construction, petrochemical industry, storage, transportation and sales, and operation and management.
OUWEI
Natural gas industry
Natural gas is a kind of high quality, efficient and clean energy. Natural gas is one of the most important energy sources in the world, buthe proportion of natural gas in China's energy consumption is small. However, China has abundant natural gas reserves. With the implementation of the west-east natural gas transmission project and the increase of LNG receiving stations, the proportion of naturalgas consumption in the national energy production will be higher and higher under the strong demand of the eastern region.As a clearefficient and high-quality energy, natural gas plays an increasingly important role in optimizing China's energy consumption structureimproving the atmospheric environment and controlling greenhouse gas emissions.The development of natural gas and LNG industrialplays a great role in promoting national economic development and social development. At present, the conditions for large-scaleexploitation and utilization of natural gas in China are ripe. ln the context of global natural gas development. the process of "gasification"of China's energy structure is also accelerating significantly.China's energy management departments and energy enterprises have realized the importance of developing natural gas and China has moved to a new stage of gas-oriented energy structure adjustment along with the peace of world. The consumption of natural gas will develop rapidly in the future.
OUWEI
Electric power application industry
Electric Power is a kind of energy which is powered by Electric energy,Power system is a power generation and consumption system composed of power generation, transmission, transformation, distribution and consumption.ts function is to convert the primary energy of nature into electric energy through power generation power and then supply electric energy to each user through transmission, transformation and distribution.Electric energy is mainly generated by hydroelectric power, thermal power, nuclear power and other power generation methods, such as wind energy, geothermal energy,solar energy, tidal energy and hydrogen energy.The electric power industry is related to the national economy and people's livelihood, and society also pays double attention to the electric power industry
OUWEI
Urban construction industry
The urban construction industry refers to the material production department engaged in the survey, design, construction and maintenance of the original buildings in the national economy.According to the national economy industry classification catalogue, as one of the 13 branches of the national economy, the construction industry consists of the following three categories: civil engineering construction industry,Wiring, piping and equipment installation, survey and design.The function of the construction industry is mainly to carry out construction and installation activities of various building materials and components, machinery and equipment, etc, to build productive and non-productive fixed assets for the national economy.The development of construction industry is closely related to the scale of fixed asset investment, which promotes and restricts each other
OUWEI
Water supply and drainage fire protection industry
According to the requirement of the fire water supply and drainage and characteristics, this paper briefly introduces the water supply and drainage pipes, accessories and basic knowledge of the pressure equipment,introduces the fire hydrant system, automatic water spray, the rain and water curtain, water spray. foam, gas, powder and intelligent fire extinguishing system basic composition, classification, working principle,design calculation,installation and maintenance and other relevant content. finally combined with the current development of large public buildings on engineering case are introduced. The outdoor heating pipeline system, which transports heat medium, is the link between heat source and heat user, and plays the role of transporting and distributing heat source.Thermal users refer to indoor heating, ventilation and air conditioning, hot water supply and thermal systems for production processes that directly use or consume thermal energy.
OUWEI
Steel smelting industry
iron and steel smelting it is the floorboard of the iron and steel metallurgy process industrial iron is divided into pig iron (with a carbon content of more than 2%) and steel (with a carbon content of less than 2%) according to its carbon content, Blast furnace iron making is used in most modern iron making, and direct reduction iron making and electric furnace iron making are used in some cases.Steel making is mainly made of pig iron from blast furnace and sponge iron and scrap steel from direct reduction smelting process as raw materials and is made into steel by different methods.The basic production process is to convert iron ore into pig iron in an iron smelting furnace and then use pig iron as raw material to make steel by different methods and then cast into ingots or continuous casting billets.
OUWEI
Food and pharmaceutical industry
Food and medicine industry is an important part of China's national economy, which mainly includes: food industry and medicine industry. The food and medicine industry plays a very important role in protecting and improving people's health and quality of life, in family planning, disaster relief and epidemic prevention, and in promoting economic development and social progress
OUWEI
Environmental Application industry
After more than 30 years of development, China's environmental protection industry has made great progress. From the initial stage of "three wastes treatment", it has developed into an industrial system covering environmental protection products,environmental infrastructure construction,environmental services, resource recycling and other fields. With the continuous increase of national environmental protection efforts and the improvement of environmental protection industry policies, the environmental protection industry has developed rapidly, the industrial fields have continuously expanded, the industrial structure, technology and product structure have been gradually optimized and updated, the development of operating service industry has been accelerated, making contributions to environmental protection and pollutant emission reduction.