Fluidized bed boiler feeding and deslagging structure and method suitable for biomass and garbage incineration
A fluidized bed boiler and waste incineration technology, which is applied in the fields of waste treatment and biomass utilization, can solve the problems of unstable combustion, short operation period, and easy backflow of flue gas, so as to achieve easy removal of debris, stable boiler operation, and The long-term effect
Pending Publication Date: 2020-09-08
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology
[0004] The object of the present invention is to provide a fluidized bed boiler feeding and slagging structure and method suitable for biomass and waste incineration, which solves the problem of unstable combustion and poor operation of existing circulating fluidized bed boilers due to difficulty in slagging. Problems such as short cycle time and easy backflow of flue gas
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] Such as figure 1 As shown, the feeding and slagging structure of a fluidized bed boiler suitable for biomass and waste incineration provided by the present invention includes an air cannon 1, an air chamber 2, a furnace 3, a feeding port 4, a feeding device 5, and a separator 6. Flue gas outlet 7, material protection eaves 8, silo 9, feeder 10, screw feeder 11, sowing wind 12, slag drop pipe 13, slag discharge valve 14 and cooling and screening device 15, among which A wind chamber 2 is arranged below the furnace 3 of the fluidized bed boiler; the flue gas outlet of the furnace 3 is connected to the separator 6, and the gas outlet of the separator 6 is connected to the flue gas outlet 7, and the circulation of the separator 6 The ash outlet is connected to the feeding port of the feeder 5 ; the circulating ash outlet of the feeding port 5 is connected...
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The invention provides a fluidized bed boiler feeding and deslagging structure and method suitable for biomass and garbage incineration. The fluidized bed boiler feeding and deslagging structure comprises a stock bin, a screw feeder, a slag falling pipe and a cooling and screening device, wherein a discharging port of the stock bin is connected with a feeding port of the screw feeder; a discharging port of the screw feeder is connected with a feeding port formed in the wall of a fluidized bed hearth; material spreading air is arranged at the discharging port of the screw feeder; the slag falling pipe is arranged at the feeding port in the bottom of the fluidized bed hearth, penetrates an air chamber arranged below the hearth and is arranged on the outer side of the hearth; a deslagging port of the slag falling pipe is connected with a feeding port of the cooling and screening device; and an undersize outlet of the cooling and screening device is connected with the feeding port in the bottom of the hearth. The fluidized bed boiler feeding and deslagging structure and method have the beneficial effects that feeding is uniform, impurities are easy to discharge, bed materials are cyclically utilized, and the boiler running period is long.
Description
technical field [0001] The invention belongs to the technical field of biomass utilization and garbage treatment, and in particular relates to a fluidized bed boiler feeding and slag discharge structure and method suitable for biomass and garbage incineration. Background technique [0002] Circulating fluidized bed boiler has wide fuel adaptability, high combustion efficiency, efficient desulfurization, NO X Low emissions, simple structure, convenient operation and many other advantages, in addition to conventional coal-fired utilization, fluidized bed boilers are also widely used in biomass utilization, waste treatment and other aspects. However, in the actual application process, users of biomass boilers and garbage boilers cannot guarantee stable feeding due to complex fuels and other reasons. Too many impurities in the fuel make it difficult to discharge slag, resulting in unstable combustion, short operating cycles, and easy backflow of flue gas And other issues. [0...
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IPC IPC(8): F23C10/22F23C10/24F23C10/26F23G5/30F23G5/44
CPCF23C10/22F23C10/24F23C10/26F23G5/30F23G5/44
Inventor 张世鑫刘海峰李楠袁野史磊茹宇王海涛高洪培
Owner HUANENG CLEAN ENERGY RES INST