Sectional type pyrolysis and gasification device

Abstract

The invention discloses a sectional type pyrolysis and gasification device, which comprises a first furnace body, a first feeding hole, a first discharging hole, a first main shaft, a second main shaft, a first groove-type air distribution board, a second groove-type air distribution board, a first driving speed controller, a second driving speed controller, a plurality of first blades, a plurality of second blades, a second discharge hole, a first clapboard and a first gasification agent inlet, wherein the plurality of first blades and the plurality of second blades which are distributed at equal intervals are respectively arranged on the first main shaft and the second main shaft; the second discharge hole is arranged on one side of the first groove-type air distribution board; the firstclapboard is arranged between the second groove-type air distribution board and the inner wall of the furnace body; the first gasification agent inlet is arranged on the furnace body of one side of the corresponding second groove-type air distribution board; the first furnace body is provided with a first fuel outlet. The sectional type pyrolysis and gasification device has high pyrolysis efficiency and stable and even reaction, heat exchange efficiency is improved, reaction remaining time is prolonged, handling capacity is improved, investment cost is saved, and an effect on greatly saving separation, refining and purification cost in a subsequent production utilization process can be realized.

Description

technical field [0001] The invention relates to the field of thermochemical conversion of biomass solid waste, in particular to a segmented pyrolysis gasification device. Background technique [0002] As one of the technical approaches of biomass thermochemical conversion, biomass pyrolysis gasification technology is a conversion method that is cleaner and more efficient than direct combustion. Under the condition of high temperature and oxygen deficiency, biomass is converted into combustible gas, liquid mixture and Solid carbon, the product is determined by different process conditions, and the product can be used for power generation and heat supply, synthetic fuel and chemicals, etc. The core equipment of this technology is a pyrolysis gasification reactor. At present, the mainstream equipment for engineering application is fixed bed and fluidized bed, each of which includes different forms. The fixed bed has the advantages of simple structure, low manufacturing cost, a...

AI Technical Summary

Problems solved by technology

Due to high energy consumption, low heat transfer efficiency and low biomass conversion rate, dry distillation process is generally used in charcoal production process

The fixed bed gasification process mainly includes updraft gasifier, downdraft gasifier, and mixed suction gasifier, etc. The material in the fixed bed naturally accumulates, and due to the inhomogeneity of the material and the inhomogeneity of the air distribution, resulting in Local over-burning and under-burning are prone to occur in the furnace, resulting in a series of problems such as low reaction rate and coking in the furnace, which seriously restrict the stable operation and large-scale development of the fixed-bed gasifier

Among them, the gas of the downdraft fixed bed gasifier passes through the high-temperature carbon layer, and the water vapor reacts with the carbon layer. The gasifier is relatively high, the calorific value of the gas is high, and the tar content is low. The efficiency of the material drying and pyrolysis process is low, which makes it difficult to increase the processing capacity of the downdraft gasifier; Lower conversion rate

Although the fluidized bed has a high reaction efficiency, it is limited by the low density of biomass, uneven particle size, and high volatile content. The design and operation of the biomass fluidized bed have not yet matured, and the market Application success stories are limited

Images