Co-combustion utilization device and method of coal and biomass
A biomass and co-combustion technology, applied in the direction of combustion method, combustion type, combustion equipment, etc., can solve the problems of restricting the mixing of coal and biomass, lack of horizontal movement, and not conducive to full combustion, etc., to reduce the occurrence of slagging The probability of improving heating efficiency and the effect of improving energy utilization efficiency
Active Publication Date: 2017-11-17
SOUTHEAST UNIV
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Problems solved by technology
Under the action of fluidizing wind, the material mainly moves in the vertical direction, and lacks the movement in the horizontal direction, which limits the mixing of coal and biomass, which is not conducive to full combustion
Method used
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Embodiment Construction
[0036] The present invention will be further described below in conjunction with the accompanying drawings.
[0037] Such as figure 1 As shown, a coal and biomass co-combustion utilization device of the present invention includes a mechanical-air combined feeding system, a diesel combustion heating system, a biomass and coal return system, a fluidized bed system, a slagging system and a flue gas Monitoring System.
[0038]Wherein, the fluidized bed system includes a fluidized bed 16, the outer wall of the fluidized bed 16 is provided with a double helical heating pipe 19, and the inner wall is provided with a primary baffle 17 and a secondary baffle 18, the baffles on the one hand prevent fine materials from being The air flow is brought out, on the other hand, it restricts the vertical movement of the material, strengthens the horizontal flow, and promotes the mixing of coal and biomass; the bottom of the fluidized bed is connected to the slag discharge system.
[0039] The...
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The invention discloses a coal and biomass co-firing utilization device and method. The device utilizes a mechanical and air combined feeding system for sufficiently mixing coal and biomass, and then the mixed coal and biomass are conveyed into a fluidized bed; high-temperature fluidizing air passing through a heat exchange system enters the bottom of the fluidized bed, and the coal and the biomass are subjected to fluidized combustion under the heating effect of a diesel oil combustion heating system; residual slag generated by combustion is discharged through a deslagging system in time, fine materials which are not sufficiently combusted and smoke enter cyclone dust collectors together, and solid particles subjected to cyclone separation enter a material returning chamber and then return to the fluidized bed for secondary combustion; and smoke subjected to cyclone separation enters a bag-type dust collector and finally enters a smoke monitoring system, the smoke is directly discharged if reaching the standard, and the smoke which does not reach the standard returns to a diesel oil combustion chamber to be combusted again.
Description
technical field [0001] The invention belongs to the field of energy and environment, and in particular relates to the comprehensive utilization of coal and biomass, in particular to a coal and biomass co-combustion utilization device and method. Background technique [0002] China's energy structure is different from the world's energy structure, which has long been dominated by coal. At present, China's energy shortage and serious environmental pollution have restricted the development of the national economy and the improvement of people's living standards. The development and utilization of biomass energy, especially the power generation of biomass energy, has received great attention and strong support from governments at all levels. Biomass and coal mixed combustion power generation technology can make full use of existing technologies and equipment. It is an effective technical means for low-cost, low-risk, large-scale use of biomass power generation, which helps to r...
Claims
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IPC IPC(8): F23C10/00F23C10/22F23C10/18F23J15/00F23L17/00F28D7/02
CPCF23C10/00F23C10/18F23C10/22F23J15/006F23L17/005F28D7/024
Inventor 仲兆平郭飞宏张金薛则禹王泽宇王恒丁宽
Owner SOUTHEAST UNIV