In early November, Luyi County, Henan Province Quality Supervision Bureau organized a safety inspection activities on the boiler in the area, ensure the safe use within the jurisdiction of the boiler in winter.

The main focus of inspection units use boilers to see through the following points:

First, the use of registration, maintenance, periodic testing situation.

Second, the establishment and implementation of the system and the rescue plan.

Third, if the boiler worker certificates.

Fourth, the operation of the boiler water treatment facilities.

To date, Luyi County Quality Supervision Bureau has complete supervision and inspection work on 11 units in the boiler, the inspection found problems and risks, monitor the instruction issued according to the law, clearly boiler rectification matter and time.

The coal fired 6 ton h city coal fired steam boiler consists of two large boiler drum out of factory , up major possession including boiler body , upper steel frame and furnace wall ,lower bulk including coal bucket ,chain grate ,lower furnace wall, and internal ventilation tube. Fuel: Bituminous Coal, dry-burning coal, hard coal, ligneous coal, etc.

1.Combustion and both sides of the furnace chamber adopt membrane water-cooling wall structure. With this kind of structure, the boiler has a high heat transmission coefficient, low heat loss, good air tightness, no distortion for furnace wall and no ash leakage.

2.Furnace front and rear water wall tube extend down to the upper portion of the grate and form the front and back arch, which extends the span of arch.

3. Inverted “α” arch furnace technology makes the front arch high and short, rear arch low and long. This structure increases the burning time of the flue gas in the furnace so as to improve the combustion efficiency. Besides, the streamline shape of back arch can throw the left carbon grains from the back furnace grate into the front so that the coal is easier to get ignited. Finally, many types of coal can be applied in the boiler.

4.The length of the front and back shaft is longer than the other domestic ones, which prolongs the time of fuel combustion in the furnace and lower the carbon content in the furnace slag. Thus, the overload ability of the boiler is strengthened with the increased effect area of furnace grate.

Coal-fired 6 ton h city coal fired steam boiler auxiliary equipment which is the result of burning coal-fired steam boiler fuel coal fired boilers to provide steam for industrial production, with the rapid development of the national industrial production, market demand for coal-fired steam boiler gradually increased, boiler in addition to the main components, further include other auxiliary devices, such as coal feeder, induced draft fan and the like. As a supporting auxiliary equipment coal-fired steam boilers, related to an important indicator of whether the normal operation of the boiler, auxiliary equipment and its role following is a small series of analyzes and summarizes the coal-fired steam boiler: 1, fuel supply equipment: Storage and transportation fuels. 2, coal grinding and milling equipment: Pulverized coal milled to a pulverized coal burning and enter the combustion boiler combustion apparatus. 3, the wind blowing apparatus: the air blowing device is defined by the air into the blower means exports coal furnace air preheater after heating and milling. Blower device refers to the boiler flue gas discharged from the chimney draft fan and sent to atmosphere. 4, water supply equipment: water through the water treatment device processing into fired steam from the feed pump. 5, slag, dust removal equipment: Cleaner Equipment refers to the removal of ash from the boiler and carry away equipment, dust removal equipment refers to the removal of fly ash in the boiler flue gas, improved sanitation. 6, the automatic control device: automatic detection, process control, automatic protection and automatic adjustment. Advanced coal-fired steam boiler in a programmable logic controller (PLC) is the central processor of the control system. The control system via the touch screen operation, the boiler automatic control and degree of operational reliability is greatly improved, easier to use and intuitive.

Why horizontal gas 6 ton h city coal fired 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.