chinese factory oil fired hot water boiler

chinese factory oil fired hot water boiler

Gas-fired boilers are fueled by heavy oil, light oil or flammable liquids. It is a heat carrier. The circulating oil pump is used to force the liquid phase circulation. After the heat is transferred to the heat equipment. Then return to the reheated direct-flow special industrial furnace. Widely used as petrochemical. Textile. Printing and dyeing. Plastic。 Rubber. Food processing. Wood processing. Asphalt is heated. Cartons are produced. Vegetables are dehydrated. Baking paint. Foundry sand mold drying, etc., can also be used for ≤ 350oC baking, steaming, setting, melting, drying. At present, environmental protection has become everyone's talk, many factories do not adapt to the new environmental policy, some small enterprises have closed down. But environmental protection is a trend, we can only make industry more environmentally friendly in order to make the country better development, people better life. Gas-fired boilers are more environmentally friendly, the new gas-fired boilers are environmentally friendly compared to coal-fired boilers in the sky and underground. Gas-fired boiler is helpful to reduce the influence of harmful components and noise in flue gas on the surrounding environment. Year-round gas-fired boiler houses shall be located on the upwind side of the overall small frequency wind direction in residential areas and major environmental protected areas, and seasonal boiler rooms shall be located on the downwind side of the prevailing wind direction in that season. It should meet the requirements of environmental impact assessment report. Rules for the use of gas-fired boilers: strict The grid is operated according to the heating curve of the boiler. When the pressure difference of gas-fired boiler is unstable, it shall not be put into use. When the furnace is shut down, when the oil temperature drops below 80 degrees Celsius, the circulating pump can stop running. Ensure that the boiler circulates well at high temperatures. When the gas-fired boiler is working normally, the high-level tank should be kept in the high level, and the oil storage tank should be in the low-level. The allowable operating temperature of a gas-fired boiler shall not be exceeded. The furnace shall not be watered with water during emergency shutdown of the gas-fired boiler. Different varieties should not be mixed. The discharge port of the tank shall be connected to the safe area. The first heating rate of gas-fired boiler must be carried out according to the heating curve.

What impact have fuel moisture steam boiler? Most of the aqueous fuel when coal or heavy oil with steam atomization of entrained moisture in an amount not more than 5%, no effect on the coil and the inner shell boiler, the boiler because their materials are steel, steel are mainly: 20g, 16Mng, 15CrMoVg, 19Mng, 22Mng, with a strong antioxidant, water resistance. With more moisture, combustion performance worse, if the moisture up to 40% burn will be extinguished.

In recent years, Siyang County town chrysanthemum industry as part of the ecological projects to enrich the people in the choice of chrysanthemum drying equipment, the county Environmental Protection Agency proposed to replace coal-fired boilers to electric boilers idea. Part chrysanthemum growers is objected that the idea costly and cumbersome, but after analysis and explanation of the Environmental Protection Agency and the power company personnel, electrical boilers have a deeper understanding of the use of electric boiler can not only improve drying chrysanthemum chrysanthemum quality and product phase, it did clean, safe, and there are various government subsidies, while coal boiler if the government out of the use, post-investment costs will be higher. At present, the boiler "electricity for coal" action has been noticed.

In recent years, Siyang County uphold the "gold and silver mines that lies to" development concept, vigorously implement alternative energy projects, alternative energy gradually extended to grain drying, drying fruits and vegetables, herbal drying and bathroom, hotels, restaurants, businesses and other industries. Siyang county party secretary said: "Winning 'Battle of Blue Sky', shouting slogans alone are not shouting to the sky, or from the 'coal to electricity,' 'oil to electricity' these specific things to start, through the implementation of alternative energy engineering, elimination of high energy consumption, low-energy-efficient equipment, the progressive realization of ecological priority, green development goals. "

Since 2016, the county completed a total alternative energy companies, service unit 686, phase out coal boiler 1336 units, to complete alternative energy electricity 256.69 million kwh. Energy saving alternative to business spending, reduce production costs and improve their efficiency and realize a production of "zero emissions" to protect the party clear water and blue sky. In mid-November, Siyang County was selected as "the second batch of national ecological demonstration counties civilization."

Improve the thermal efficiency of the process wns gas boiler, oil-fired boiler which chemical incomplete combustion heat loss and mechanical incomplete combustion heat loss. Because almost no ash after combustion of the gas boiler, solid and liquid fuels without mechanical incomplete combustion, there is no need to consider the mechanical incomplete combustion of the gas boiler heat loss. In all heat losses, heat losses have tremendous proportions, when the high thermal efficiency of boilers, heat losses so the total loss of the main heat losses of fuel gas-fired boiler flue gas heat loss is the exhaust gas temperature and For air excess factor. When the exhaust gas temperature decreases, high thermal efficiency can be obtained, for example, a conventional three-pass steam boiler, furnace used in the past straight and smooth smoke tube, must increase the heating surface is arranged to make the exhaust gas to an acceptable degree, the theoretical discharge around the smoke heat loss. Potshell causing significantly increased diameter, wall thickness increased, greatly increased metal consumption, thus further reducing the exhaust gas temperature should be greatly restricted. From the aspect of heat transfer is not only now consider only the heated area, the use of new technology enables heat transfer performance significantly increased, the difference between the heat transfer overcomes the disadvantages of the past performance of the boiler, so that the exhaust gas temperature decreases, the structure is more compact. Center back boiler combustion boiler is preferably small foreign structure, although the two-pass boiler, the heated area is small, but the use of the turbulator charming, the purpose of enhancing the turbulence of the flue gas, disrupt laminar flow boundary wall, reducing the thermal resistance, increasing the heat transfer coefficient, a smaller heating area to achieve the same high thermal efficiency. Lower exhaust gas temperature limit in theory, the exhaust gas temperature can be reduced to very low or even close to the ambient temperature, for maximum thermal efficiency. However, in practice, due to the reduction of the exhaust gas temperature, low temperature corrosion will cause, therefore, the exhaust gas temperature can drop too low, in order to ensure that the wall temperature is higher than the main boiler heating surface flue gas dew point temperature. Therefore, low-temperature corrosion has become a major obstacle to reduce exhaust gas temperature and improve the thermal efficiency of the boiler. Tail auxiliary heating surface increases, further reducing the exhaust gas temperature, fuel gas wns improve thermal efficiency of the boiler as the oil, gas fuel burn easily wns type gas boiler air preheater generally not disposed. The economizer means is a common energy, which can be recycled flue gas was able to effectively reduce exhaust gas temperature. Separation type condensing gas boiler is out of the main boiler heating surface, the installation of the condensing heat exchanger. In one aspect of the flue gas absorption can significantly reduce the smoke temperature, reducing heat losses, on the one hand the absorption of part of the potential condensing water vapor released, increasing the effective use of heat of the fuel. Ash cleaning, to ensure that the heating surface of the scale wns boiler thermal efficiency of the boiler, the presence of soot fouling and heat transfer resistance increases, reducing the heat transfer effect. The thermal conductivity of the scale and soot is almost of the same order of magnitude, with the increase in scale, soot, the exhaust gas temperature rapidly increases, the thermal efficiency is significantly decreased. So, keep the boiler heating surface inside and outside clean, efficient heat transfer, thermal efficiency and to ensure the safe and economic operation of boilers, boiler fuel gas-fired boiler ash cleaning is required.

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