steam generator for sale with turbine

Combined heat and power (CHP) introduction

Cogeneration, refers to the heat and power plant in the same joint together, shorted as CHP (combined heat and power). CHP plants have been ordinary waste heat to be utilized to provide cheap heating heat for industrial and household use, which can greatly improve the thermal efficiency. Typically thermal power, its efficiency is about 30 to 35%. This means that for every 1 mega-joule energy output, there are two mega-joules of heat wasted. This part of the heat of re-used to heat water, fully meet the heating needs of the plant and the residential area near the plant. CHP usually drive a steam turbine generator, and the exhaust heat is used to complement the existing boiler plant, the total efficiency of up to 80%.

Shanxi Province is located in China's western areas north of the Loess Plateau, the terrain finished solid, rich products. Thanks to energy supply and price advantage of coal, coke, metallurgy, electric power and other coal industry, the rapid rise of the formation of Shanxi coal-based economies of resource-based industries.

Shanxi Province, but had coal and Xing, but also because of the coal and sleepy. According to the report, "2017, Shanxi Province, coal accounted for the proportion of energy consumption up to 84.6%, higher than the national average of 24 percent, it is 2.9 times as much as the global average of Shanxi to 1.6% of the national land area, consuming about 10% of national coal amount. for Shanxi, winning the battle of blue sky, coal pollution can be effectively controlled is the key.

According to the "Blue Sky Battle Shanxi three-year action plan," issued in July this year (hereinafter referred to as "" Shanxi three-year action plan '') planning requirements, by 2020, sulfur dioxide, total nitrogen oxide emissions are lower than in 2015 more than 20%, compared to strive average concentration of sulfur dioxide in 2015 fell about 50%. Among them, 2020, total coal consumption in 8 cities in key areas to achieve negative growth, the province's coal consumption in primary energy consumption share dropped to 80%, the proportion of the province's coal consumption of coal accounts for more than 55%.

According to Shanxi Province Bureau of Statistics latest data, as of the end of August this year, Shanxi Province, the outgoing power 50.67 billion kwh, up 21.1%; the first half of Shanxi new energy consumptive power grid to complete 15.6 billion kilowatts, an increase of 58.2%, new energy abandoned consumption fell 90.6% year on year, abandoned electricity rate fell 10.2 percentage points.

The past two years the province shut down 52 coal mines, quit production capacity 45.9 million tons, subtract coal production capacity of 9.25 million tons per year, the completion of energy-saving 18 million kilowatts of coal-fired power plants, coal-fired power plants province's average coal consumption of electricity of 320 grams per kilowatt-hour of standard coal. In the first half of this year, the province's above-scale industrial Shanxi coal industrial added value increased only 0.8%.

The steam generated by the boiler is generally measured in tonnage, but the steam turbine power generation is calculated by heat, and the two can be converted: generator electric power MW = boiler tonnage × steam per ton × steam turbine efficiency × generator efficiency. The steam enthalpy depends on the parameters of the steam. The pressure and temperature of the steam are different, and the enthalpy value is also different. It is generally considered to be 0.7. The coefficient of steam turbine efficiency and generator efficiency depends on the power station unit system.

About boiler, daily attention to ten o'clock analysis of its original meaning, it means the pot is heated in a water container on the fire place burning stove refers to fuel the boiler including the two most from the pot and stove included. Today, we say that the boiler is the use of fuel or other energy hot water heating can become mechanical equipment of hot water or steam. Generating hot water or steam boiler may provide heat directly to the required industrial production and the people's living, the steam power plant can also be converted into mechanical energy by the generator can convert the mechanical energy into electrical energy. Because the frequency of use of the boiler is high, so it's for routine repairs and maintenance is also very important, here are ten aspects regarding boiler need attention, we divided into two parts to illustrate: First, note the boiler: (1) boiler factory, should be accompanied by quality certification, safety instructions and other supporting information. (2) boiler installation, maintenance and renovation should be obtained qualifications in this area for the job, not blindly, to avoid problems. (3) boiler to be registered before the registration can be used, and to be performed by professional job. (4) the operator while operating the boiler, and eight systems should abide by the rules and six records. (5) boiler and its safety accessories to be tested on a regular basis, no test can not be used. Second, boiler routine maintenance: (1) Check the boiler pressure gauge, water gauge, safety valve, sewage plant, the steam supply valve and the valve and verify its compliance with the performance requirements. (2) Check the automatic control device system meets the requirements. (3) Check the boiler feedwater system meets the requirements. (4) on the blower, induced draft fan, damper, etc., to see if intact, is working. (5) boiler should be regularly checked once a problem is found to be in time, so as not to affect the normal operation.

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