horizontal coal boiler efficiency

horizontal coal boiler efficiency

Several countries because of pressure cast iron horizontal coal boiler efficiency efficiency indicators have been carried out in a blaze of glory roaring coal to gas work, use cast iron boiler, greatly minus the dust of the infected, and dangerous gases such as nitric oxide smoke It has been suppressed. Efficiency index is a measure of the key rules of cast iron boilers, here we come to discuss under pressure cast iron boiler efficiency indicators of several reasons. After research stakeholders, cast iron boilers heat loss stems from two main places: the loss of full combustion air ratio unreasonable and smoke exhaust heat. Heat loss can be reduced smoke emission can be converted flue gas heat recovery boiler of cast iron fitted in the tail, or selection of more excellent function FGR boiler. Fully air combustion ratio does not meet the criteria unreasonable Summary: ordinary cast iron boilers ejector burner, resulting in air-fuel ratio can not be motorized mobility. Many cast iron boilers are mechanical draft burners, resulting in an unreasonable fuel ratio because of the following: the main air-fuel ratio unreasonable case two types: when too much air, not having excessively low temperature air is heated , resulting in cast iron boiler energy costs rising, cast iron boiler efficiency index weakened; when there is insufficient air, insufficient burning situation occurs, resulting in cast iron boiler efficiency indicators weakened.

BOILERS deposited combustible material, such as carbon black, oils idle, coal, etc., it is mainly due to incomplete combustion of the tail into the horizontal coal boiler efficiency. Especially when the ignition and shutdown, most likely to cause incomplete combustion, the rear of the boiler deposited a large amount of combustible material. These deposits reduce the heat transfer surface of the tail heating the exhaust gas temperature rises. When the exhaust gas temperature rises to a certain value, there is sufficient oxygen combustion condition occurs at the secondary combustion, secondary combustion is in the shutdown some minutes or hours after the occurrence, which is the ignition point of combustible material and heat conditions. Running faster flow of the flue boiler, heat of the combustible substances produced smoke away quickly, only a slow oxidative, ignition combustion can not be achieved. After the shutdown, the gas flue, the flow is stopped, the heat generated by the oxidation of combustible material not easily lost, the temperature will rise. If the door or flue damper closed tightly, leakage into the fresh air for combustion, causing secondary combustion after shutdown.

First, to improve the fuel will be coal into gas in principle, more in line with the relevant environmental standards, coal as fuel for the horizontal coal boiler efficiency has been subject to the authorities to stop, that there is often a company will be coal-fired boilers on the boiler rehabilitation programs into gas boiler embodiment, may use natural gas or alcohol as a fuel after passing through this transformation, the raw coal to reduce all kinds of pollution caused by the fuel, thus using not only environmentally friendly but also improvement in the fuel cost. Second, improve coal-fired furnace boiler furnace to transform into a blast furnace gas fired boiler is the use of auxiliary heating furnace, and then to improve the use of gas for heating, if not exactly when or poor fuel atomization in the combustion furnace gas gathering or tail, it is very prone to catch fire or explode, then the need for means to improve the furnace blast doors, while adding automation and control ignition and flame failure protection devices to ensure safe operation of the furnace process. Third, improve the pre-attached devices did not improve during the coal-fired furnace operation requires a lot of ancillary equipment to carry out normal operations, ancillary equipment commonly used in general including the coal, Cleaner, dust collector and grate and so on, after adoption of these boiler ancillary equipment gas furnaces do not need to use so that you can save and invest more of boiler equipment. Fourth, improve environmental protection degree We all know that coal-fired furnace has been impermissible environmental policy, coal is a serious source of pollution not only pollutes the environment but also cause a variety of effects on the body, after making use of the boiler gas furnace, greatly reducing soot and various soot emissions can effectively improve air quality, more environmentally better protect the cleanliness of the air, but also more in line with the standards of environment protection and energy policy.

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