small fixed grate coal fired boiler

Boiler equipment belongs to special, complicated structure design, operating environment is more severe, during use, is often influenced by temperature and pressure stresses and alternating. If long-term use down, inspection and maintenance neglect small fixed grate coal fired boilers, boiler operation will likely cause reduced efficiency and security risks. Once accidents, often fatal. But many companies and personal security awareness is not strong, it is still a long time to run the boiler inspection, inability to control the operation of the law of the boiler, there is a big security risk.

Recently, Gaoyou City, Jiangsu Province for coal-fired boilers Market Authority has embarked on a comprehensive inspection operations, according to "comprehensive coverage, thorough investigation, replicability, results-oriented" principle, the use of coal-fired boiler business diagnostic investigation, and effectively eliminate security risks.

City Supervisor Bureau focus on verification of the actual use of coal-fired boiler units, using the address, use, heating, technical parameters, test status, filing one by one, do on-site inspection records strict accordance with relevant provisions, retained image data. To phase out coal-fired boilers to be found in the inspection, and urge the relevant units to implement the safety responsibility, and return in time for retirement procedures using the registration certificate. So far, the council has issued eight safety supervision instructions to complete the verification of the use of 14 units of 45 coal-fired boilers and filing, of which three units have been deregistered 15 piece of equipment.

Generally,the firing type coal dust fire with biomass for CFB small fixed grate coal fired boiler is usually used to generate power in power plant.CFB boiler technology is a new type clean coal technology,while co-firing of biomass and certain types of waste with coal can be a good environmental and economic solution.

Chemical plant small fixed grate coal fired boiler combustion efficiency improvement measures which are not high chemical plant boiler combustion efficiency is not high improvement measures what? The low-temperature exhaust gas boiler combustion efficiency test, a higher excess air ratio, suggestions for improvement higher problems: 1, the excess air ratio due to lower general, industrial boilers was 1.4. Due to the different internal structure of each of the boilers, excess air coefficient can be adjusted according to the actual operation, there are sufficient coke burn time in the boiler. Additionally, secondary air may be suitably provided, coke sufficient oxygen for complete combustion, reducing the incomplete loss of solids. 2, due to lower exhaust gas temperature of the boiler exhaust gas temperature account for a large proportion of the boiler heat loss, so the loss of the boiler must be minimized. In one aspect, the dew point should be to prevent corrosion; the other hand, the exhaust gas temperature is not so high. 3, to improve the uniform distribution of air to the boiler furnace combustion efficiency, so as not to cause incomplete combustion of the coal formation dead. As the pilot were grate boiler, the moving speed of the chain should be controlled within a reasonable range of coal on the grate have enough time to complete combustion, but not too long so as not to waste grate. In addition, high-volatile coal, the coal should be possible to improve the quality, to shorten the combustion time, reduce the loss of solids of incomplete combustion.

The Advanced Bio CFB technology further improves the well-known benefits of CFB technology's superior fuel flexibility, inherently low emissions, and high availability. Today, the Advanced Bio CFB technology offers efficient sub-critical small fixed grate coal fired boilers up to 600 MWe for 100 % biomass firing. This technology also offers supercritical steam parameters for biomass and coal co-firing applications up to 800 MWe. This is the result of continuous development work, building on experience and data from over 400 CFB reference boilers.

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