chain grate coal fired industrial steam boiler manufacture

Works coal, gas boiler steam heating device (burner) to release heat, radiation heat transfer is first absorbed by the water wall, the Wall Boiling water, a lot of steam into the drum for generating steam separator (DC furnace out), separated into the steam superheater full, by radiation, convection method and continuous top horizontal flue furnace absorption, the flue gases heat the back pass, and the superheated steam temperature reached the requested work. Power generation boilers are generally provided with a reheater, steam is used to heat the work of the high-pressure cylinder, the reheater go out of the reheat steam, the low pressure cylinder continuously to generate power. Plain speaking, a chain grate coal fired industrial steam boiler manufacture the burning of the fuel absorbs heat energy must be water parameter (such as pressure, temperature, etc.) of the steam device. Boilers and boiler furnace divided into two parts, the pot is filled with water to the metal container, the fuel is burning furnace section heat absorb water pot furnace and burning the fuel to steam, with the basic principles of almost boiling water, the pot equivalent kettle, oven stove equivalent. A heating device (burner releases heat, radiation heat transfer is first absorbed by the water wall, the Wall Boiling water, a lot of steam into the drum for generating steam separator (DC out furnace), separated into the full steam superheater by radiation, convection method and continuous top horizontal flue furnace absorption, the flue gases heat the back pass, and the superheated steam temperature reached the requested work. power generating boilers are generally provided with a reheater for heating by high-pressure cylinder is after work steam reheater go out of the reheat steam, the low pressure cylinder continuously to generate power. plain speaking, thermal energy of the fuel steam boiler burning the water absorption becomes bound parameter (such as pressure, temperature, etc.) device steam boiler is divided into two parts and the furnace pot, the pot is filled with water to the metal container, the fuel is burning furnace section heat absorb water pot furnace and burning the fuel to steam, and the basic principles of burn almost boiling water, the pot equivalent kettle, equivalent furnace stoves. vertical coal-fired steam boiler is an energy conversion device, the energy input to the boiler with a fuel Chemical energy, electrical energy, thermal energy and other forms of high temperature flue gas, the boiler through the conversion of thermal energy must be output externally with steam, hot water or organic heat. Used for power plant, boats, locomotives and mining enterprises. Boiler the main reason of the original work is a thermal energy or heat using a fuel burning industrial production released after transfer to the water in the container, the water temperature reaches thermodynamic device necessarily needs or steam pressure in the boiler furnace pot with some two performed in conjunction with the water into the boiler in the future, the system heat soda boiler heating surface will absorb transferred to the water, the water must be heated to a temperature and pressure to generate steam or hot water, it is drawn applied. in some apparatus burning, the burning fuel may continue to evolve heat, high temperature flue gas occurs by thermal incineration convey the heat to the boiler heating surface, the temperature was gradually lowered itself, and finally discharged from the steam boiler chimney classification: First, according to the fuel is divided into: 1, coal-fired boilers, 2, oil-fired boiler, 3, gas boiler, 4, electric heating boilers, 5, nuclear boiler, 6, waste heat boiler, etc., before therebetween Up to four kinds, the most common, the lowest operating costs of coal-fired boilers, but a large area, environment pollution, the operator requested more; higher degree of fuel gas-fired boiler automation, operation cost is higher than coal, covers smaller, less operator request; electric heating boiler I have not had the operation, but the operation cost should be the highest, but a small boiler footprint, best environmental; other boiler is not introduced, due they do not understand. Second, by way of heat transfer into water tube boiler, fire tube boilers, water, fire-tube boiler fuel gas-fired boiler is usually fire tube boiler, typical model:. WNS series (horizontal combustion chamber burning boilers), such boiler features: simple structure, an additional amount of evaporation is generally small (typically ten tons or less, there are also large, but usually do not exceed 35 tons), Kai furnace boost rapid, relatively low boiler water quality request; coal-fired boilers are generally are water-tube boilers, water tube boilers high thermal efficiency, but messy configuration, the boiler high quality requested. Third, additional pressing pressure into the low-pressure boilers, medium-pressure boiler, high pressure boiler four, according to use For the day of boilers, industrial boilers, power generation, marine boilers.

The whole structure of normal pressure BoilerThe whole structure of atmospheric pressure boiler consists of boiler body and auxiliary equipment. The main components of boiler, such as furnace, boiler barrel, burner, water-cooled wall superheater, economizer, air preheater, frame and furnace wall, constitute the core part of steam production, which is called boiler body. The two main components of the boiler body are the furnace and the drum. The furnace, also known as the combustion chamber, is the space for fuel combustion. The furnace in which the solid fuel is placed on the grate is called a layer furnace, also known as a bed furnace; the liquid, gas or powdered solid fuel is injected into the furnace burning in the fire chamber, which is called a chamber furnace, or a fire chamber furnace; the air turns coal particles into the furnace, which is called a chamber furnace, or a fire chamber furnace; the air turns the coal particles into a chamber furnace, also known as a fire chamber furnace. It is called boiling furnace, also called fluidization bed furnace, in which the furnace with boiling state and suitable for burning inferior fuel is called boiling furnace, and the cylindrical furnace which uses air flow to make coal particles rotate at high speed and burns intensively is called whirlwind furnace. The furnace design needs to take fully into account the characteristics of the fuel used. Each boiler should burn the original fuel as far as possible. The economy and reliability of boiler operation may be reduced when the fuel with different characteristics is used.

Since March, Harbin City Bureau of ecological environment began to organize special supervision to carry out coal-fired boiler enforcement issues, 309 sets of unfinished mention boiler and marked the transformation of the city after the 2018 boiler to mention 409 logo revamping supervise enforcement actions taken joint law enforcement and the monitoring center the way, as has been completed, the list of Wuchang city, Bayan, Mulan, Tonghe County, Yilan County, Founder county business checks on double Harbin city.

After steering group went to Harbin City, district, county (city), by reporting to listen territorial ecological Environment Agency and the inspection unit, a preliminary understanding of corporate profiles, boilers, pollution control facilities and pollution-line monitoring equipment on-site supervision and inspection, found the three groups of coverage and is not completely blocked, businesses can not provide the proposed supervisory monitoring data reports or third-party monitoring data report corrections and comments, requirements of territorial ecological Bureau to investigate and punish.

The special supervision and inspection work time, heavy task, environmental inspectors and monitoring to front-line staff in site supervision, to overcome the difficulties, give full play to law enforcement officers proficient in professional knowledge and rich practical experience and other advantages, the successful completion of stage special inspection of law enforcement tasks.

The main characteristics of the indicators boiler What? To demonstrate configuration, capacity, parameter and economical operation of the boiler, etc., generally represented by the following indicators to the basic characteristics of the boiler. A) evaporation industrial boilers evaporation is generally 0.1 ~ 65t / h. For the hot water boiler with a nominal thermal power of its capacity to indicate the size, in units of MW. (Ii) pressure and temperature for saturated steam production boiler, just indicate steam pressure. For the production of superheated chain grate coal fired industrial steam boiler manufacture, the steam temperature of the steam must be marked at the outlet of the superheater, i.e., superheated steam temperature, the unit is deg.] C. For hot water boiler, the hot water temperature has rated outlet and rated the import of sub backwater temperature. With rated thermal power, rated water temperature and the return temperature corresponding to the rated nominal referred circulating water flow of water through the hot water boiler, the unit is t / h. Heating boiler (iii) an evaporator heating surface and the heating surface of the heat generation rate surface evaporation rate or heating rate is an indicator of the intensity of the boiler work, the greater the numerical value, the better the heat transfer, the smaller the amount of metal consumed boiler. Heating surface evaporation rate general industrial boiler is less than 40kg / (m · h); heating surface of the heating rate of hot water boiler is less than 83700kJ / (m · h) iv) the thermal efficiency of the boiler which is an index indicating economical boiler heat, general industrial combustion thermal coal boiler efficiency of around 60% to 82%. Sometimes, in order to measure the heat economy schematically steam boiler, are also commonly used coal or coal water vapor than the ratio expressed as the ratio of the amount of coal in the boiler per unit time over the period of time and the amount of steam production. Coal-water ratio of about the size and type of boiler, coal quality and operation management quality and other factors. Industrial boilers coal-water ratio is generally l: 6 ~ 1: 7.5. Description (a) Evaporation: desired amount of steam produced per hour steam boiler called evaporation, the unit is t / h steam boiler showed that the size of the rated capacity of evaporation, i.e. in boiler design parameters and ensure a certain efficiency. maximum continuous evaporation, also known as the rated output of the boiler (ii) pressure and temperature: the rated pressure steam boiler of the steam at the outlet of the steam or the hot water boiler rated working pressure rated pressure at the outlet of the hot water boiler is called, and He said maximum working pressure, in units of MPa (iii) an evaporator heating surface and the heating surface of the heat generation rate: refers to the heating surface of the pot soft drinks and other heat transfer medium and the flue gas heat exchange area of ​​the pressure receiving member, usually with smoke metal surface area of ​​the gas-side heating area is calculated, in units of square meters. the amount of steam per hour per square meter of the resulting heating surface, called boiler heating surface evaporation rate, in units of kg / (m · h) per hour hot water boiler m² heating surface of heat generated by the heat generation rate is referred to as heating surface, the unit is kJ / (m · h). (Iv) thermal efficiency: thermal efficiency of the boiler is a boiler effective utilization percentage of the heat input and heat boiler per unit time, also called boiler efficiency, [eta] is represented by the symbol.

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