9 MW Szl Industrial Coal Fired Industrial Hot Water Boiler

9 MW Szl Industrial Coal Fired Industrial Hot Water Boiler

Exhaust gas has been plagued by sewage paper industry, paper industry pollution problems of the country very seriously. Fujian Heng paper packaging company has been committed to the use of clean-type boiler paper processing. October 22, 2016, David Carse, the paper with my company, signed a 6 tons of steam an integral condensing steam boiler for the production of corrugated cardboard and other paper products. I provided the boiler greatly solve the problem of sewage wastewater Heng paper. After the boiler operation, both to meet local environmental requirements, but also reduce operating costs for the constant boiler paper products.

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.

Details of operation of the boiler details chemical energy chemical energy Note 1 Note that operation of the boiler, fuel delivery is controlled with respect to the thickness of the layer of coal-fired boilers, the actual operation, the particles of different sizes on the same coal seam, unreasonable distribution, uneven ventilation, combustion is not uniform. The method can be employed uniformly stratified combustion to coal, to improve seam incomplete combustion: first administration of large particles of coal in the lower layer, the upper layer after administration minimal, large particle surface area of ​​small particles of coal, the need to burn a long time, this time is in the air the highest concentration of oxygen lower position; the other hand, small particles of coal on top, large surface area, a low oxygen concentration, full use of excess air. 2, the flow regulating damper excess air ratio is too large, a large loss of smoke; excess air ratio is too small, incomplete combustion loss is large, and therefore need to properly regulate the air flow to minimize loss of two or more. Usually in the flue gas analyzer backpass smoke, the control amount of wind of carbon monoxide is reduced to a reasonable value. For unconditional for gas analysis, empirical judgment by the naked eye can see the flame in the furnace, the flame pale described excess air amount; brown opaque flame, smoke black smoke indicates incomplete combustion. 3, there is a 1mm thick scale surface water quality management experiment boiler heating surface, waste of fuel from about 3% to 5%, in the presence of 3mm thick scale, waste of fuel of about 5% to 10% [3]. Water two general steps: pre-treatment, ion exchange or reverse osmosis. 4, cleaning blowdown gray scale or fouling deposition in the heating surface, increased heat resistance, reduced heat absorption wall, to improve the furnace exit gas temperature, boiler output decreased, but to increase the amount of cast coal, causing furnace exit gas temperature further improve a vicious circle. Therefore, timely cleaning clear dirt is particularly important. 5, the energy efficiency of the heat insulation testing industrial importance boiler showed small boiler in the case of good thermal heat radiation loss is about 3%, if the wrong selection insulation material, the thickness is too small, or even damage, does not include local heat, heat losses will be higher, the boiler has been running, has been caused by waste heat into the air. When the shutdown check whether the furnace wall insulation bricks off; isolated brick flue check is complete, to avoid shorting the flue gas; outer portion boiler, steam pipes and other insulation damage to be repaired; when heat insulation, low thermal conductivity of the material ( i.e., materials with good thermal insulating properties) on the inner layer having a better thermal insulation effect; respond to the economizer outer insulating layer for laying under conditions permitting. 6, to solve the problem of air leakage air leakage boiler boiler unit during operation is a common problem, the need to ensure the tightness of the boiler, furnace air leakage above all, do not close the site to check the furnace wall, door, inspection holes, etc., can be candles law, candles near these places, to observe whether the candle flame inward deflection to judge. Second leakage tail heating surface, the flue stack leakage mostly welding cracks, elbow bend, the expansion joints wear wear; mostly air superheater corrosion or wear leading to leakage through the pipe, the boiler shutdown should focus an examination.

Horizontal steam boiler with a boiler boiler you know take you through a horizontal steam boiler Generally speaking, we use boilers have very many models, according to their different fuels of different works, there are different, the boiler itself institutions, divided into many, the Take the steam boiler, there are still sub-ordinary boilers and steam boilers of it, for this horizontal steam boiler, his characteristics is not the same. Boiler fire resistant concrete arch from ramming. After the arch low and long, and therefore good combustion, flue wings and side wall refractory material sintered brick. Boiler front wall, back wall using a common bricks. Grate air distribution reasonable, the combustion chamber is large, strong coal applicability. Adapt to all types of bituminous coal or anthracite, mixed coal. Full combustion. Since the high temperature flue gas enters the first settling chamber, and then into the wings on both sides of the stack, before the smoke box, smoke and dust so good effect. Water circulation simple, reasonable structure and components under pressure, in the case to ensure water quality, completely safe operation. Combustion equipment for the quick grate, combustion apparatus installed in the manufacturing plant, transported to the site can be directly mounted on a foundation. With a reasonable structure, compact, low consumption of steel, the boiler performance, weight, frame size and capacity of the domestic product has obvious advantages compared. It is a horizontal type boiler quick fire tube boiler, refrigerant natural circulation. The boiler drum from the heat exchange system, the left and right header, composed of the water wall, the main furnace wall with a heating surface, convection tube inner drum portion and the drum.

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