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2 Tons Of Oil Hot Water Boiler

2 Tons Of Oil Hot Water Boiler

The heat loss of exhaust smoke is the largest of all kinds of heat loss in boiler. Generally, the heat loss of exhaust smoke is 6% of the heat fed into the furnace, and the heat loss of exhaust gas increases 0.5% when the temperature of exhaust gas increases by 12 ℃ and 15 ℃. So the exhaust temperature is one of the most important indicators of boiler operation. The following are several possible causes of increased flue gas temperature in the furnace: (1) slagging and ash accumulation on the heated surface. No matter it is the slag accumulation in the water-cooled wall of the furnace, or the ash deposition in the superheater, convection tube bundle, economizer and preheater, the thermal resistance of the flue gas measurement will increase, the cooling effect of the flue gas will become worse due to the deterioration of the heat transfer, and the exhaust temperature will rise. (2) excess air coefficient Big. Under normal conditions, the exhaust temperature increases with the increase of excess air coefficient at furnace outlet. After the increase of excess air coefficient, although the amount of smoke increased, the rate of smoke increased, and the convection heat increased, the increase of heat transfer was not as much as that of the increase of flue gas. It can be understood that after the increase of smoke speed, the flue gas leaves the heating surface without time to transfer heat to the working fluid. (3) the air leakage coefficient is too large. The flue gas leakage in the furnace and rear shaft of a negative pressure boiler is inevitable and the leakage coefficient allowed by a certain heating surface is specified. When the air leakage coefficient increases, the effect on the exhaust temperature is similar to that of the superheated air coefficient. And the air leaks away. The closer the furnace is, the greater the influence on the rise in exhaust temperature. (4) Water supply temperature. When the steam turbine load is too low or the high pressure heater is out of line, the feed water temperature of the boiler will be lowered. Generally speaking, if the fuel quantity is kept constant, the heat transfer temperature difference of the economizer decreases and the heat absorption of the economizer decreases when the feed water temperature is increased, which makes the exhaust temperature increase. (5) moisture in the fuel. The increase of moisture in the fuel increases the amount of smoke, thus increasing the exhaust temperature. (6) Boiler load. Although the boiler load increases proportionally, the amount of smoke, the amount of steam, the amount of water supplied, and the volume of air increase proportionally, however, the flue gas temperature at the furnace outlet increases proportionally. Increase, so that the exhaust temperature increased. After increasing the load, the outlet temperature of the furnace increases, the heat transfer temperature difference of the convection heating surface increases and the heat absorption increases. Therefore, the more the convection heating surface is, the less the influence of the boiler load on the exhaust gas temperature is. (7) fuel varieties. When the low calorific value gas is fired, the radiative heat transfer in the furnace decreases due to the decrease of furnace temperature, and the non-combustible components in low calorific value gas, mainly N _ 2, CO _ 2 and H _ 2O, increase the amount of flue gas, so the exhaust temperature increases. Although the excess air coefficient of furnace outlet is lower than that of coal burning, the ash content in the fuel oil is very low after the pulverized coal furnace is changed to burn oil, although the excess air coefficient at the furnace outlet is lower when burning oil. There is no larger ash particle in flue gas, and there is no cleaning effect of larger ash particle on the heating surface, and the convection heating surface is polluted more seriously. Therefore, combustion is not good, often smoke-emitting boiler smoke temperature rise. When there is a steel ball dust removal device at the tail, the exhaust temperature is slightly lower than that of burning coal because the tail is cleaner. (8) the operation mode of pulverizing system. For a closed pulverizing system with a silo, when the pulverizing system is in operation, as a part of the water in the fuel enters the furnace, the furnace temperature decreases and the flue gas increases, and the cold air leaking into the pulverizing system enters the furnace as a primary air during the operation of the pulverizing system. Reduction of air flow through air preheater To raise the exhaust temperature. On the contrary, when the pulverizing system is shut down, the exhaust temperature decreases.

Boiler multiple protection: (1) the integration of boiler water level to protect water level and boiler design, the appearance of more compact appearance, accurately show the actual water level in the boiler body function. Coupled with dual independent electronic water level control system to achieve ultra-low water level in the boiler, low water level automatic adjustment function, the normal water level, high water level, ensure that the boiler in a variety of unforeseen circumstances foolproof, secure home. (2) steam pressure protection ☆ pressure controller: selection of high sensitivity of the pressure controller, the pressure is high, or low levels of signal to the electrical switch, other control lines or automatic control chain protection. Common pressure controller and pressure gauge, vapor pressure overpressure alarm can cut off the burner limit is reached; the pressure controller may be single or double fire burning fire the actual operating pressure regulator. ☆ safety valve: safety valve is the last line of defense to protect the boiler, the boiler pressure exceeds the limit, according to the set pressure relief valve design with the school, the exhaust steam pressure relief, to ensure the normal operation of the boiler. (3) having a burner flame protection flame protection inlet means, combustion function is to detect, when the ignition failure or extinguish combustion middle, immediately off the burner into the oil (gas) solenoid valve, the blower continues to operate at this time, the furnace was purged combustible residual gas, after 20 to 30 seconds purge, and various auxiliary blowers automatically cut off power, the boiler operation stops. (4) self-locking power failure protection case, the boiler shutdown immediately burst self-locking power interruption, if the current power is restored, the boiler will not start at any time, you must reset release self-locking, to re-start the ignition.

10 tons of horizontal gas 2 tons of hot water boiler safety features Henan party nearly 10 tons of gas hot water boiler can be divided according to the type of gas hot water boiler WNS and SZS gas hot water boiler, meaning both what is it? WNS means is a horizontal-type combustion chamber burner, meaning that double drum SZS vertical type burning furnace chamber, although the two different processes of different structures, but the fuel and the safety device are the same. This chapter focuses to introduce safety protection system of the two kinds of boiler: 1, interlock protection system ① As the two kinds of dual-use oil and gas boilers are in this together computing, once the fuel or air pressure below the minimum set when the standard, it will automatically cut off the fuel supply ② cold water delivery device event of a failure, will automatically cut off the fuel supply ③ water temperature is higher than the highest temperature setting, will automatically cut off the fuel supply 2, the most dangerous place is the ignition system boiler system , because many of these conditions could not be controlled once the ignition, so the first firing of the furnace should be purged to avoid residual combustible gas combustion furnace, after the purge, ignite pilot fuel (oil or gas) flame monitor reflects the flame existence, and it continues to burn about 10s. After 10s, the main fuel valve (oil or gas) driven i.e., ignite the main burner. If the normal main burner combustion, the ignition system is automatically shut down. 3, turn off the boiler system we know if it is to continue to provide fuel to the furnace in the flame will cause serious consequences of an explosion, this one so fast Henan party made a special detection device, or burn when the ignition fails halfway flameout, general in the 5S (ignition) or the 10s (runtime) off oil, gas solenoid valve, with sound and light alarm signal. 4, via the feedwater system to a steam cycle water injection drum seat, gall direct flame furnace, the flame furnace heat absorption, the heat absorption of smoke tube furnace high temperature flue gas discharged water, boiler water becomes progressively heated steam, by after separation water separation means leads from the main steam valve. Henan party fast as a professional gas boiler manufacturer, has 70 years of design and manufacturing experience, customers throughout the country, the most recent of several large cooperative enterprises and 10 tons of gas hot water boiler, Zhengzhou University, Zhengzhou Yutong Bus with 10 tons of gas hot water boiler, Gongyi aluminum plant with 10 tons of gas steam boiler, your trust is fast Henan party's power in the service of idealism Henan party fast, quality-oriented principle never live up to your commitment to your trust!

Our company attaches great importance to the quality of wine, winemaking process steam requirements provided very strict, party fast boiler provides fully meet our needs, give us a brewery to provide strong support. --customer feedback

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