Ash discharge system of biomass gasification furnace

Abstract

The invention discloses an ash discharge system of a biomass gasification furnace, which sequentially comprises an ash channel system, an ash falling system, an ash collecting system and an ash outputsystem from top to bottom. The ash channel system is arranged in a furnace body, and the ash falling system, the ash collecting system and the ash output system are arranged at the bottom of the furnace body. The ash channel system is a dish-shaped grate. The ash falling system is arranged on the lower side of the ash channel system and can rotate to open and block the ash falling channel to enable ash to fall. The ash collecting system is arranged below the ash falling system, and the ash output system is connected with the ash collecting system. The dish-shaped grate is uniform in air outlet, the number of ash falling channels is increased, the ash falling section is increased, ash falling is more uniform, collapse of a fixed carbon combustion layer is more uniform, the probability thatthe grate bar body is burnt out by non-uniformly collapsed scorching carbon is reduced, the ignition loss rate is reduced, and the physical and chemical properties of ash slag are more stable. The combustion speed and the gasification speed of the RDF can be effectively increased, so that the unit consumption of the biomass waste is increased.

Description

technical field [0001] The invention relates to a gasification furnace, in particular to an ash discharge system of a biomass gasification furnace. Background technique [0002] Biomass waste gasification application technology has been developed in my country for nearly 30 years, but it has not been commercialized for two reasons: low calorific value and miscellaneous properties. For the gasification application technology, the combustible gas has low calorific value and poor pyrolysis gasification performance. [0003] Biomass waste includes municipal solid waste, urban sludge, agricultural and forestry waste, medical waste, industrial organic waste, etc., and its equivalent is more than 8 times the energy used by all human beings. The above-mentioned waste is subjected to multi-stage crushing-wind separation-magnetic separation-screening to a particle size below 1 cm, and then adding a biothermal deodorant (the core technology of this additive is to improve the pyrolysis...

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Problems solved by technology

[0014] The purpose of the present invention is to overcome the disadvantages of the background technology, such as the small ash fall cross-sectional area and the single ash fall channel, which cause the ash fall to be crowded, and the ash fall to be locally fast and locally slow; Overcome the problem of excessive heavy metal content in the ash and slag in the background technology; overcome the problem that the ash production in the background technology is difficult to be observed, and the combustion situation of the furnace cannot be judged from the ash production; The shortcoming that the dried dust has a great impact on the human body is to provide a new type of biomass gasifier ash and grate system

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