8 mw hot water coal fired boiler manufacturer

8 mw hot water coal fired boiler manufacturer

The partnership, fast 8 mw hot water coal fired boiler manufacturer for the user responsible attitude to have left a deep impression on our fireman boiler operation is not very skilled, fast deliberately sent a party of professional and technical personnel for our on-site supervision of installation, commissioning and training to ensure that the latter can operate our good boiler fireman. --customer feedback

Industrial 8 mw hot water coal fired boiler manufacturers and heating boilers What is the difference? Industrial boiler product in two ways, one steam used to generate electricity or gas, such as steam vaporized available fertilizer plant, coal as raw material, synthetic fertilizers, which is typical of industrial boilers, coal-fired industrial boilers still account for a large most gas is generally waste heat boiler for recovering waste heat. Industrial boilers commonly circulating fluidized bed boiler industrial boiler thermal power equipment is important, our country is today the world's largest production and use of boilers country. China's manufacturing industry is established and developed after the founding of New China. The term "industrial boiler" in the late 1930s, with the boiler thermal power generating units with capacity increasing, in order to distinguish high-capacity power plant boiler gradually adopted. Modern large-scale industrial boilers evaporation capacity has reached 100 to 200 tons / hour. Industrial boiler structure type in the structure can be divided into fire cartridge type, water and fire tube type 3 class. ① fire tube boilers; it is an early boilers, fire tube containing only water in the boiler twelve heating pot shell fire cylinder combustion means. Low thermal efficiency, large volume and steel consumption, since substantially no production 60s. ② fire tube boiler: it is in the vertical or horizontal potshell in addition to the fire tube, a plurality of means further smoke tube. The fuel in the combustion chamber high temperature flue gas produced after combustion smoke flows through these pipes heating pot of water, and then discharged into the chimney. Compared with fire tube boiler, since it is the number of multi-smoke tube, heated area increases, the exhaust gas temperature is low, high thermal efficiency, and the consumption of steel are relatively small volume of the boiler. FIG. 1 is a horizontal tempering tube boiler. When evaporation fire tube boiler is generally not more than 15 t /, working pressure not greater than 1.6 MPa, the thermal efficiency of coal is generally about 70%, of all oil-fired boiler automatic operation, the thermal efficiency can reach 85%. ③ water tube boilers: mostly used for larger capacity, higher pressure industrial boilers. Water tube boiler has a natural circulation type and DC two. Natural circulation water tube boiler with a single drum and double drum and other structures. Figure 2 is a double drum water tube boiler. Such boilers generally disposed in the convection tube economizer, an air preheater and sometimes, in order to reduce exhaust gas temperature. When coal efficiency up to 80% higher when the fuel. No drum DC industrial boilers, and the tubing coiled behind the inner wall of the furnace tubes of the convection heating surface composition. From the end of the tube into the water supply, the steam output from the other end. Industrial boilers small current, typically with separator and automatic control devices. The fuel and fuel combustion equipment is widely used in variety of industrial boilers, coal (bituminous coal, anthracite, lignite and coal waste, etc.), oil (heavy oil, residual oil and diesel, etc.), gas (natural gas or various industrial by-product gas) plant and urban waste (wood, bagasse, black liquor and waste, etc.) and so on. Therefore, industrial boiler combustion equipment is also varied. There layer belongs chain grate combustion apparatus, the feed grate, reciprocating grate, vibrating grate, chain grate stoker plus the like (see grate). Also useful way of fluidized bed combustion (see boiling furnace). In the evaporation of 65 t / h coal-fired industrial or larger capacity boilers generally use coal. Heating boilers boiler belongs to the category of civilian life, as people's safety awareness, and after 2000 are based on building heating hot water as heat medium, it does not allow the use of steam boilers, so in general we are talking about heating boilers often refers to pressure hot water boiler. There are many types of heating boilers, their classification is mainly divided in accordance with the fuel type, fuel heating boilers can be divided according to the different electric heating boiler, oil heating boiler, gas heating boilers, coal-fired heating boilers, biomass heating boilers. Which includes fuel: diesel, kerosene and heavy oil; which includes gas: Natural gas, LPG, city gas and biogas.

Fangkuai 8 mw hot water coal fired boiler manufacturers take you to know that horizontal steam boilers are usually used in a very large number of models, depending on the fuel, the working principle, and the different structures of the boiler itself, which are divided into many different types of boilers, and they are divided into many different types, depending on the fuel, the working principle, and the different structure of the boiler itself. In the case of steam boilers, there are also ordinary boilers and steam boilers, for this horizontal steam boiler, its characteristics are not the same. The boiler arch is made of refractory concrete. The rear arch is low and long, so it burns well. The two-wing flue and side wall brick are made of refractory brick. Boiler front wall, rear wall using universal refractory brick. The air distribution of the grate is reasonable, and the combustion chamber is larger. The applicability of coal is strong. Suitable for all kinds of bituminous coal or anthracite, mixed coal. It burns well. Because the high temperature flue gas first enters the settling chamber and then into the two-wing flue from both sides, and the front smoke box, so the smoke elimination and dust removal effect is good. The water circulation is simple, the compressed parts have reasonable structure and can run safely under the condition of ensuring water quality. The burning equipment is a fast-loading grate. The burning equipment is manufactured and installed in the factory and installed directly on the ground after transportation to the site. It has the advantages of reasonable structure, compact structure and low steel consumption, which makes the boiler's performance, weight and structure size obviously advanced compared with the domestic products with the same capacity. The boiler type is horizontal fast loading water Fire tube boiler, working fluid natural circulation. The boiler heat transfer system consists of a boiler drum, a left and right header, and a water wall. The heating surface is mainly composed of a furnace water wall, a part of the boiler drum and a convection tube bundle in the boiler tube.

Flame center condensing gas 8 mw hot water coal fired boiler manufacturer of low nitrogen adjust the Q & A Q: What is the center of the flame low nitrogen gas condensing boiler? A: a low nitrogen gas fuel enters the condensing boiler furnace, on the one hand due to the combustion of fuel to generate heat so that the flame temperature rising, on the other hand endothermic condensing boiler waterwall low nitrogen gas, the flame temperature decreases. When the heat generated by the combustion of the fuel is greater than the heat absorption of the water wall, the flame temperature is increased; when the amount of heat generated by fuel combustion equals waterwall heat absorption, the highest flame temperature. A low nitrogen gas condensing boiler furnace where the highest temperature is called the center of the flame. Highly flame kernel is not fixed, but changes in operating conditions with low nitrogen gas condensing boiler is changed. For example, when the burner is divided into two rows, the upper row cast much the center of the flame on the move, and vice versa down. Q: What is the center of the flame? What impact the level of the central flame furnaces, heat exchangers? A: After the combustion of the progressive development of pulverized coal ignition, combustion heat evolved is greater than heat transfer, so that the flue gas temperature rising, thus forming a fast combustion, higher temperature region. In this area the most heat is released. This area is often referred to as the center of the flame (or burn center). Under certain excess air factor, when the shift of the center of the flame, so that the total heat reduction furnace, the furnace exit gas temperature is raised; down position if the center of the flame, increase the heat transfer in the furnace, the furnace exit gas Temperature drop. Q: Why should adjust the flame center? A: The low-nitrogen gas condensing boiler operation, if the furnace flame center deflection, will flame entire condensing boiler furnace low nitrogen gas fullness worse. One hand the furnace, rear, left, and right there is a large temperature difference between the smoke, so that uneven heating water wall, it is possible to disrupt the normal circulation. On the other hand the temperature difference caused by smoke left and right sides of the furnace outlet, that the outlet side of the high temperature furnace, etc. causes the side superheater heating surface squib, so the operation is to be noted adjust the position of the center of the flame, to be located central hearth. Q: How to adjust the flame running in the center? A: For the four corners of the burner to be arranged in the same row of symmetrical operation, no chipping, uniform output. And try to keep each combustor exit gas stream velocity and uniform load. Or the center position of the flame is changed by changing the inclination or swing down the burner secondary air ratio.

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