Self-heat-supply cracking device for tar in biomass fluidized bed gasification combustible gas
A fluidized bed gasification and cracking device technology, which is applied in the field of self-heating cracking devices, can solve the problems of internal combustion engine instability and high tar content, and achieve the effect of simple structure and reduced economic cost
Pending Publication Date: 2018-08-10
NANJING FORESTRY UNIV
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Problems solved by technology
[0005] The present invention proposes a self-heating cracking device for tar in biomass fluidized bed gasification combustible gas. External heating source, thereby solving the problems of high tar content in combustible gas of biomass fluidized bed gasification and unstable internal combustion engine in the prior art
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Embodiment 1
[0027] as attached Figure 4As shown, the main equipment of the 1Mw wood powder and bamboo powder fluidized bed gasification-internal combustion engine power generation co-produced material charcoal project is as follows: gasification reactor, subdivided separator, biomass fluidized bed gasification combustible gas automatic separation of tar Thermal cracking unit, heat exchanger 1, heat exchanger 2, dust collector, fan, internal combustion engine, etc. The 600-700°C combustible gas (calorific value is about 1200kcal) produced by the fluidized bed gasification reactor first passes through the subdivision separator to separate the biomass char, and then enters the biomass fluidized bed gasification for self-heating of the tar in the combustible gas Cracking device, the burner in the cracker is ignited first, and the heat storage body of the cracker is heated by combustible gas combustion. At this time, the remaining combustible gas gasified does not enter the cracker and is dir...
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The invention relates to self-heat-supply cracking device for tar in biomass fluidized bed gasification combustible gas. The self-heat-supply cracking device comprises a fuel gas inlet pipe, a cracking cavity, a gas distribution pipe, a heat accumulator, a combustor, a controller, three electric valves, a fuel gas outlet pipe and two thermocouples. The heat accumulator, the combustor, the controller, two of the electric valves and one of the thermocouple form a control system to control the temperature of the heat accumulator; the gas distribution pipe, the controller, the other thermocouple and the other electric valve form a control system to control the temperature of the cracking cavity. The self-heat-supply cracking device has advantages that 1) by combustion of self-produced combustible gas, the temperature of the heat accumulator is kept above 900 DEG C to provide a combustion high-temperature environment for combustion of the combustible gas; 2) by control uniform air sprayingquantity of an air distribution device, combustible gas combustion quantity is controlled, the cracking cavity is further controlled to be 850 DEG C above, and cracking of the tar in the combustible gas is guaranteed; 3) external heat sources are avoided, and simple structure and effectiveness in economic cost reduction are realized.
Description
technical field [0001] The invention relates to a self-heating cracking device for gasifying tar in combustible gas in a biomass fluidized bed, which belongs to the field of biomass energy. Background technique [0002] Under the dual pressure of energy and the environment, vigorously developing clean and renewable energy has become a very urgent worldwide issue before governments all over the world. Compared with other new energy sources, biomass energy has the characteristics of being renewable, less polluting, transportable and storing, and most compatible with the current energy industry, so it has attracted special attention. China is a large agricultural country with rich agricultural and forestry biomass resources, huge quantity and diverse varieties. Under the background of favorable policies, the utilization of biomass resources has achieved considerable development in China, but at the same time, many problems in technology and equipment have arisen. [0003] Bio...
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Login to View More IPC IPC(8): C10K3/00C10J3/84C10J3/56
CPCC10J3/56C10J3/84C10K3/003C10K3/008C10J2300/1603C10J2300/0916
Inventor 陈登宇章一蒙王恋刘新
Owner NANJING FORESTRY UNIV