| Product Description: | dzl coal fired boiler |
| Rated evaporation (t/h): | coal-fired boilers |
| Project boiler medium: | steam boiler |
| Equipment: | DZL6-1.25-A |
Design dzl coal fired boiler system
In order for the burning fuel and combustible gas to remain in the furnace for an appropriate length of time, there must be sufficient chamber dimensions, including sufficient height between the upper discharge pulverized coal nozzle and the furnace outlet. This will ensure that the final temperature of the furnace outlet at the inlet of the convection heating surface is lower than the melting point of the worst coal burned. The deposit of furnace wall ash below the smoke window of the furnace outlet will be removed by properly arranged furnace wall blowers.
The cross-sectional area of the furnace must be determined by a careful study of all the fuels intended to be used by the boiler and by the appropriate use of the net and heat load values. Another important aspect in determining the size of the furnace is the arrangement of the superheater, reheater and economizer heating surface in the upper part of the furnace and in the convection flue. When these different parts are arranged in the unit, a proper balance must be achieved between sufficient thermal pressure for the transfer of flue gas to steam and the temperature of the metal in the pipe, which must be kept below the temperature at which oxidation or damage occurs.
Concept of Design dzl coal fired boiler system
Turning solid waste and waste slurry into usable energy is an attractive approach from an environmental, as well as an economic and conservation perspective. Boilers have been used for years to burn off various types of industrial waste. As a stopgap measure, unprocessed municipal waste has been and is being burned, but the United States does not have any such heat recovery, while Europe has long used waste as a source of heat for industrial and power plant boilers.
However, the use of unprocessed waste for later purposes has obvious disadvantages. For some form of feeder, and to minimize tube damage and maintain unit availability without high maintenance costs, corrosion of the heating surface severely limits the operating pressure and temperature of the unit. Treated waste, if needed, can be burned on any coal-fired unit with a waste-fuel nozzle. We suggest that the amount of treated garbage burned in a pulverized coal boiler accounts for more than 10~20 of the total input heat.
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