4 mw industrial coal fired hot water boiler

4 mw industrial coal fired hot water boiler

You have to know the energy consumption of boiler problems (flue gas oxygen content) 1, reasons 1.1 boiler leakage problems may increase the furnace exit of excess air ratio. 1.2 preheater leakage large. 1.3 or coal boiler load changes, wind, dust adjustment is not timely. 1.4 auxiliary burner throttle opening degree command deviations. 1.5 burner type, operation mode unreasonable. 1.6 determine the optimum boiler oxygen value is not accurate. 1.7 oxygen inaccurate measurements. 2, measures to address the problem of operational measures 2.1 2.1.1 Check to see if the fire door, be sure to close tight. 2.1.2 appropriate control the furnace pressure, amount of air leakage reduction furnace. 2.1.3 boiler load, when the quality variation, adjusting one, two air flow to maintain the optimal oxygen amount boiler control value. 2.1.4 maintain the normal water level in the water seal bottom, bottom to reduce the amount of air leakage. 2.2 carry out leakage test and damper characteristics before and after the test boiler maintenance routine maintenance and testing 2.2.1. 2.2.2 adjusted to optimize the combustion tests, the optimum value of oxygen boilers. 2.2.3 regularly test the air preheater leakage, provide the basis for air leakage control. 2.2.4 Periodic calibration of oxygen measuring devices to ensure the accuracy of measurement. 2.2.5 timely check and adjust the position of Flue Gas baffle system (such as: an auxiliary burner class inspection throttle opening degree, etc.), the identify problems in time. 2.3 2.3.1 downtime and a wear liner release duct, deformation, cracks, wear inspection process. 2.3.2 flue pressure test done to check the tightness of handling the leaking part. 2.3.3 flue damper position, the opening degree of chipping, deformation, loose seal, astringent card check process. 2.3.4 corrected assist air and the fuel damper flap opening position. 2.3.5 boiler, air preheater Leakage leak plugging. 2.3.5.1 boiler: furnace wall, roof sealing, see the fire holes, Manhole, bottom sealing plate is deformed, corrosion and tank leakage inspection process. 2.3.5.2 air preheater seal gap measurement adjustment, the deformation of the sector plate and curved plate, wear control check, the sealing gap adjustment mechanism inspection process. 2.4 2.4.1 transformation and a duct liner wear loose, deformation, cracks, wear inspection process, replacement, and a bluff body concentrator ceramic sheet, and silicon carbide wear measures. 2.4.2 boiler, air preheater, leakage leak plugging treatment. 2.4.3 the internal structure and the sealing means to transform the preheater, reducing air leakage. 2.4.4 boiler, flue joints and other advanced seal plastic material, to reduce leakage.

Flame center condensing gas boiler 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.

Recently, many users of the phone does not know how to shutdown after the steam boiler maintenance, boiler maintenance is very simple in fact, today we explain the steam boiler and 4 mw industrial coal fired hot water boiler shutdown after: After the steam boiler maintenance shutdown method how maintenance. Since the cause of boiler failure or power shutdown required boiler, a steam boiler before travel should stop combustion boiler, the boiler slowly lowering the temperature until no pressure boiler, should pump before shutdown, induced draft fan and turn off the blower. After the maintenance shutdown home for boiler, furnace divided into external corrosion and home for the pot. Pot corrosion enjoying, enjoying their home for two kinds of wet and dry selected based on the length of shutdown time. When long-term disabled boiler, furnace should be paid close attention to external corrosion problems take care of themselves. First, the boiler shutdown cooling is necessary as far as possible completely eliminate fouling and ash grate heating surface of the upper, the lower portion of the furnace. Then have to adhere to certain natural ventilation flue. Under normal conditions, should be placed to dry moisture-proof agent in the furnace, flue. The dry quicklime as used, the furnace or the flue gas per cubic meter of ordinary should be placed about 3kg. After placing all the ventilation should be tightly closed doors. Lime powder to change after change. Such as boiler rooms in low-lying position, the air during shutdown severe flood tide, the method should be used regularly and placed a small fire to dry dry agent phase separation. If the boiler boiler long time, in order to thoroughly clean the soot topcoat red lead oil furnace or other metal surfaces in the anti-corrosion paint. As for the way home for corrosion inside the furnace shutdown, the shutdown Yaoan the length of time to be. Under normal circumstances, no more than one month shutdown of the available wet home for a month or more should take care of themselves dry. Dry to pay attention when enjoying the following questions: Do not dry agent in direct contact with the metal outer boiler, can be housed in a container such as an iron plate; dry agent after standing, for shutting the hole and the other hand hole cover, the vapor, the water pipe necessary to cut off valve; variant lime powder should be replaced. While enjoying wet, to pay attention to boiler water condensate is preferably used, followed by the available existing boiler water, demineralized water again; after adding the base, with a slow fire boiler water is heated to 80 [deg.] C to 100 the pressure rose to 0.2 maintenance after 0.3MPa 2 to 3 hours, so that it reaches the furnace circulating water alkalinity balance, pressure is reduced, then fill the boiler water, a certain gauge, and continue to adhere to this pressure throughout the home for alkalinity should be regularly tests, decreases should be added at any time; in winter, wet enjoying pay attention to antifreeze, especially the local sewage channel and economizer; before re-use should release all the pot boiler lye, best prepared sump, in order to facilitate further use. At the same time should be rinsed with clean water. The performance characteristics of coal, oil, gas steam boiler

To speed up the transformation of coal-fired boiler project, the Tianjin Municipal Government were tender for coal-fired boiler products. In the bidding site, a number of boiler prosperity across the country have resorted to every means, come to bid on his own star product. Fang fast low nitrogen water tube boiler with its unique architecture and technology, will come to the fore in this bid, the successful bidder Tianjin Justice Drive surrounding district project.

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