In many countries used edible oils from the catering sector are collected and burnt in conventional boilers with or without fossil fuels, or used as a substitute for diesel in cars and diesel power plants(reciprocating engine plants).Waste edible oils are also used as a highly productive feed in biomass anaerobic digesters or as a feed stock for production of animal feed.
In a biomass fired boiler, the fuel is fed mechanically to the furnace where it is burned on a grate. This type of technology is well proven with long track record and is usually used in small to medium-scale projects. A scheme of a water cooled viberating grate is shown in the following figure.
1) The structure DZL boiler horizontal fast-assembling fire tube boilers and natural circulation.
2) Advanced design: The main heating tube of the boiler uses low and medium pressure boiler seamless pipe and the boiler drum uses the special steel.
3) The front arch of the boiler use refractory brick. The back arch is low and long, so it has good combustion. Both blank flue and side wall use refractory bricks. Front wall and back wall of the boiler use common refractory bricks.
4) Reasonable air distribution in the grate, large combustion chamber, widely types of coal.
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