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Coal Hot Water Boilers

Coal Hot Water Boilers

SZS structure which forms the water tube boiler described below common small water tube boiler: the boiler is mainly composed of vertical boiler tubes, water wall header, the downcomer, the convection tubes and other components (FIG. 3-12). It evaporation capacity is divided into 2t / h and 4t / h, which is the simplest structure water-tube boiler and a minimum capacity. In the furnace chamber, two horizontal drum of the drum water is not a vertical line in the center, minor drum forward, tubes convection expansion joint between two rollers. Seamless steel tube is curved convection bank of 51 mm formed by the outer diameter. It is arranged in a row, is provided a smoke screen between the tube wall folded, Z-shape so that smoke passes through the tube bundle. Wall and ceiling are arranged in the furnace front wall. Wall arrangement bow front lower portion of the side wall. Extracting two downcomer barrel from both ends of the boiler, through the lower wall of the header connector with the side walls of the water wall. Elbow boiler waterwall tubes and convection, readily expandable, unitary structure having a good elasticity, a large volume of the furnace, for burning various fuels. However, the use of coal workers' labor intensive; less heating surface arranged furnace surface, not the tail flue economizer, the exhaust gas temperature is high, the low efficiency; convection tubes easy to fouling. Two Longitudinal bend tube boiler drum (D-type boiler) D-type arrangement is very common in recent years, a small boiler tube arrangement, which is characterized essentially in the same vertical twin drum center line, parallel to the chamber axis double drum shaft furnace, boiler and the side of the water wall, the other side of the flues and convection heating surface tubes, D type boiler. D-type arrangement are also used in oil-fired boilers. Figure 3-13 shows a D-type boiler having a vibrating grate. Drum main ingredient is water, convection bank, Wall System, (water wall, the first downcomer), economizer , such as some boiler superheater. Slightly larger than the diameter of the cylinder barrel diameter of convection bank connected between two reels. Convection tubes of 51 mm outer diameter of a seamless steel composition, disposed in the convection pass convection pass, convection pass longitudinally along the refractory wall into two half-regions, the flue gas convection pass along a U-shaped flow. Fireplace decorative walls, all around the side walls and the downcomer is provided with fixed frame, form a closed water circulation system.

What type steam boiler type steam boiler of what we can from different angles on the boiler category:? 1, according to the working fluid can be divided into natural circulation boiler, forced circulation boilers, DC boiler. 2, according to the boiler flue gas flow tube, a shell boiler (fire tube boiler), combined fire tube boiler. 3, according to the installation package boilers, boiler assembly, bulk boilers. 4, according to the boiler drum placed vertical, horizontal boiler. 5, according to the purpose of life boilers, industrial boilers, utility boilers, boiler travel. 6. The medium steam boilers, coal hot water boilerss, soft drinks dual boiler, boiler organic heat carrier. 7. The water circulation natural circulation, forced circulation and once-through boiler, combined cycle. 8, the pressing force pressure boilers, low boilers, medium pressure, high pressure boiler, high pressure boiler. 9. The internal combustion boiler combustion, external combustion boilers. 10, according to the fuel fired boilers, oil-fired boiler, gas-fired boiler, pulverized coal boiler, waste heat boiler, electric heating boilers, biomass boilers. There are many types of steam boilers, the key is that you need which, because of the different classifications, so in different places, will be used to different steam boiler, so as to better ensure use.

It is reported that since December 2018, with the market in Hefei, Anhui Province Lujiang County prison within the jurisdiction of the range 15 "coal to gas" boiler unit in the course of a full range of checking the newly installed gas boiler, while ensuring the area range within the boiler unit making a smooth transition "from coal to gas," the process, but also to ensure the safe use of the newly installed boiler.

The boiler before proceeding with the installation, install the unit you want to inform the local boiler installation of special equipment safety supervision and management department, inspection units installed during the installation and installation personnel qualification documents related strictly require the installation of the unit perform the required safety specifications and related standards, strict Charles undocumented and undocumented installers to install the unit.

When commissioning the boiler, the gas company and do the docking unit installation and use of the tripartite unit personnel to ensure the safety of boiler commissioning and trial operation of the boiler installation inspection, and actively promote the boiler unit boiler handle registration certificate and make contingency plans .

Note the choice of industrial boilers from the first industrial revolution to develop microbial technology, and upgrading various products continue to emerge, led us to the development of human civilization from the original backward to technological civilization, to the boiler, for example, since the last century, there has been a cylinder since the boiler-shaped, with the needs of science and technology and production, from simple to complex, from single to serialization, boiler technology are developing rapidly, the good reputation of industrial boilers companies choose to share precautions industrial boilers; first, the coal use; the design of the cell structure based on coal boiler components as the design basis, select the boiler should pay attention to adjust to the type of coal in the region. It recommended new, high-efficiency, high-tech, high-quality, durable industrial boilers; second, parameter selection; industrial efficiency boiler work normally when approaching the highest efficiency rating, as the load decreases efficiency has declined. Boiler capacity is generally selected: it generates a large steam than the actual gas consumption, such as the required parameters and actual parameters difficult to match industrial boilers, high boilers in this case a gear selection parameter. Selection of auxiliary boiler should also refer to the above principles, to avoid the "big horse car"; third, the number of choices; normal maintenance of industrial boilers and boiler shutdown is a number of factors, but also pay attention to: the boiler room shall not exceed the number of boiler economizers work load, install boiler economizer device purpose is to avoid too much heat when the smoke away. Improve the thermal efficiency of the boiler, is provided in the back pass boiler economizer heating surfaces, the use of flue gas heating boiler feed water, to save energy, economizer after the installation, the boiler increases the thermal energy required for heating the feedwater, boiler water and so reducing the temperature difference between the water supply, reduce the burden of heating boiler feed water. Cause excessive number of boiler economizer can not play a role, resulting in waste of energy; These are high-quality industrial boiler company to share some notes selected industrial boilers; vast land of our country, many places are rich in coal, resulting in different types of coal , which has also become a basis for selection of parameters and select the number of boilers enable us to be more effective in energy conservation, to achieve a win-win.

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