qxl 29mw 1 6mpindustrial coal fired high quality water boiler

qxl 29mw 1 6mpindustrial coal fired high quality water boiler

Why horizontal gas steam boiler to run under negative pressure? Horizontal Gas-fired steam boilers are generally negative pressure operation, if the pressure is running high temperature flue gas will cause the furnace to burn jet furnace walls and insulation, but also endanger the safety of operating personnel , the negative pressure is not too large, generally -10 ~ -30Pa, small oil-fired boiler is generally because there is no draft fan for the combustion positive pressure. For improving the thermal efficiency of the boiler has the following methods: a low pressure industrial boiler manufacturers has been designed in consideration of the problem of overheating efficiency, device, or change from the flue gas energy aspects is not possible and thus the best energy boiler operation starting from the (here not On the recovered water of vapor condensation). According to statistics survey, the current design of the thermal efficiency of domestic low-voltage industrial boilers is generally 70 to 90%, generally the actual operation of the thermal efficiency of about 60 to 80%, some even below 50%, a small low pressure industrial boilers as long as the operation, maintenance properly, design can achieve the thermal efficiency of the boiler manufacturers. I think the management and operation of the boiler should pay attention to the following points: First, to monitor the boiler exhaust gas temperature. Usually the largest boiler flue gas heat loss is a loss, so control the boiler flue gas temperature is very important, general industrial boilers low pressure gas (mainly refers to less than 10 tons of boiler and pressure of 1.6MPa, the same below) of the exhaust gas temperature is 150 ~ 180 ℃, oil-fired boiler exhaust gas temperature is 210 ~ 240 ℃, when the exhaust gas temperature is too high to find the cause and timely elimination. Causes of high temperature exhaust gas boiler are: a chamber negative pressure is too high, short-circuiting flue gases, the heat pipe 3 soot is too thick, too thick scale pan 4, etc., oil-fired boiler exhaust gas temperature is too high reasons : 1 air not adjusted oil, the oil is not completely burned in the chimney secondary combustion occurs aft, 2 soot too, the need for timely cleaning, the flue gas short circuit 3, 4 is too thick scale, etc. second, the control of boiler blowdown rate. General industrial boiler blowdown rate controlled at 5 to 10%, in the pot of water to ensure that qualified (mainly total alkalinity and pH) under the premise of boiler blowdown rate as low as possible, the sewage to adhere to the "ground row, row less, uniform discharge "principle. Third, the maintenance of good boiler furnace wall insulation. Boiler heat loss is also a relatively large heat losses, now the boiler manufacturers in the manufacturing and design has been well thought out, so we do not need to change, we just trying to be difficult to maintain. Outsourcing surface temperature generally does not exceed the boiler 50 ℃, such as too high will have to find out the reasons, timely elimination. Boiler insulation should always be kept dry for gas boilers, pressure must not run long, or easy to damage the coal furnace wall and gate and so on. Fourth, adjust the ratio of fuel and air volume, complete combustion of the fuel as possible. Small boilers generally do not have the amount of wind testing instruments, we can only go by experience adjustment. For oil-fired boiler, the normal combustion flame was yellow-white, non-glare, flame stability, no visible smoke chimney; for gas boiler, the normal combustion flame as a light yellow, no visible smoke stack, substantially cinder burn coal particles as uniform as possible. Fifth, there must be complete boiler water treatment. Complete boiler water treatment and water quality testing can maximize prevent boiler scaling and correct guidance of the sewage, but it did not do a lot of small boilers, companies usually do not pay attention.

The boiler is capable of utilizing coal, oil, gas, electricity can be transmitted to the chemical medium, the pressure vessel is converted to thermal energy or mechanical energy, has been widely used, hot qxl 29mw 1 6mpindustrial coal fired high quality water boilers and heating in industrial production is common to provide power type. Hot water boiler fuel can be utilized to heat the water to a certain temperature, or for heating domestic hot water.

Recently, in Jiaxing City in Zhejiang Province Nanhu District, officially launched a comprehensive investigation and action on gas boilers and biomass boilers urban built-up areas, and actively promote the transformation of low nitrogen emission gas-fired boiler, Zhejiang Province, determined to win the Battle of the sky made own contribution.

According to the requirements of the investigation, the South Lake district towns, streets, parks within the jurisdiction of the respective gas boilers and biomass boilers urban area to take home from house to house visits Paimo way, the ecological environment Branch area combined with market regulators issuing a list a verification form inventory management. After the statistics were found in the region with gas boiler 35 units, built-up area of ​​biomass boiler Taiwan.

Meanwhile, Nanhu District will be in more than 500,000 cubic meters of natural gas consumption in the four on-site visits to enterprises as a pilot enterprise low nitrogen transformation operations boilers, ecological environment Branch area of ​​personnel, publicity reform provinces, municipalities and low nitrogen emissions on gas-fired boiler requirement that the premise of ensuring safety in production, natural gas boiler NOx emission after the transformation shall not exceed 50 mg / cubic meter, and listened carefully to the enterprise raised about the difficulties of combustion gas boiler low nitrogen transformation exists.

To speed up the investigation and major renovation large boilers, Nanhu District definite time node, before the end of 2019 business model will complete the transformation of low nitrogen gas boiler, at the same time, the city built-up area of ​​biomass boilers implement ultra-low emissions transformation. Nanhu District will adhere to routine inspections and investigation focused on the combination of concentration and control checks and unannounced visits to combine law enforcement when combined with the daily supervision and wrong, and the law enforcement inspection report from the masses combine to ensure long-term monitoring of boiler regulation implemented.

About six tons of steam boiler shutdown of a temporary shutdown: It is planned, therefore slow cooling during shutdown protection device, it should also pay attention to safety, pause furnace according to the rules in Chapter IV Fenghuo (pressure fire) get on. 2, safety shutdown: care should be completely stopped even on normal operation plan for 1 to 3 months to be a shutdown, shutdown should maintain more safety injection apparatus, after the shutdown, and other water-cooled furnace to below 70 ℃ when they let go of the gas, open manholes, hand holes, rinse the pot with water scale. 3, emergency shutdown: the boiler operation, when the case of the following circumstances, should an emergency shutdown, and notify the relevant authorities. (1) expanding the cease-fire should first see if the water table level is called to take water law. If Inception water table, water cock side, and then close the steam cock, and then turn on the water faucet open and close repeatedly called after water, still can not see the water. (2) All water supply equipment failure. (3) All water gauge, pressure gauge, safety one of all the failures. (4) a boiler or furnace wall element damage, serious threat to the safe operation of the boiler, emergency shutdown, should focus on preventing the stop of the accident and the specific steps as follows: ① first blowing off; ② the coal on the grate red raking; ③ Close induced draft fan.

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