Novel biomass gasification steam generator

Abstract

The invention provides a novel biomass gasification steam generator. The novel biomass gasification steam generator structurally comprises an automatic feeding system, a gasifier, a secondary combustion chamber, steam generation tube banks, a water preheating system and a bag-type dust collector, wherein the automatic feeding system is connected with a gasifier; the gasifier is connected with the secondary combustion chamber; the secondary combustion chamber is connected with the steam generation tube banks; the steam generation tube banks are connected with the water preheating system; and the water preheating system is connected with the bag-type dust collector. The novel biomass gasification steam generator has the following advantages: the provided novel biomass gasification steam generator is not a boiler, the tube banks are heated to produce steam for later use by virtue of combustion of a combustible gas generated after biomass gasification, and tail gas generated by combustion preheats cold water in inlets in the tube banks and is cooled down, so that the heat utilization ratio is high; bag-type pulse dust collection is performed to further reduce dust in the tail gas, so that the environmental emission demand is met; and the novel biomass gasification steam generator overcomes the adversity that enterprises need steam.

Description

technical field [0001] The invention relates to a novel biomass gasification steam generator, which belongs to steam equipment in the field of mechanical processing. Background technique [0002] In provinces and cities with strict environmental protection requirements, the use of boilers is prohibited due to high emissions of dust and harmful gases. For this reason, many enterprises have to use pipeline gas for combustion, or use steam provided by thermal power plants, which have increased production for enterprises. cost. [0003] However, wood and bamboo processing enterprises have a large amount of processing residues such as sawdust, shavings, and bamboo scraps. If the existing furnace body is used, most of them use normal burning, that is, the gas goes directly upwards, which will cause insufficient fuel combustion and blackening. The smoke also brings out a large amount of dust, which seriously pollutes the environment and threatens people's living environment. At p...

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Problems solved by technology

[0002] In provinces and cities with strict environmental protection requirements, the use of boilers is prohibited due to high emissions of dust and harmful gases. For this reason, many enterprises have to use pipeline gas for combustion, or use steam provided by thermal power plants, which have increased production for enterprises. cost

[0003] However, wood and bamboo processing enterprises have a large amount of processing residues such as sawdust, shavings, and bamboo scraps. If the existing furnace body is used, most of them use normal burning, that is, the gas goes directly upwards, which will cause insufficient fuel combustion and blackening. Smoke and bring out a large amount of dust, which seriously pollutes the environment and threatens people's living environment

At present, it is popular to extrude these scraps into granules and then burn them. To extrude these scraps first, you must first screen them, then crush the unqualified ones, and then dry these scraps to a moisture content below 16%. Otherwise, the particles cannot be formed or the particle shape is loose. It is unrealistic for these processing enterprises to introduce a complete set of extruding equipment, which will increase a large investment, and it is not the most environmentally friendly after extruding and burning, and the electric power of the extruding equipment is very high. Large, the minimum power of a small complete set of equipment for screening, drying, conveying, and extrusion is about 100 kilowatts. For small and medium-sized enterprises, this is a high-power equipment. Many enterprises cannot reach the spare power and must expand the capacity. , if expansion is required, the enterprise will have to invest a large amount of money. Many enterprises cannot afford it and choose to stop production or close down. Besides, burning and extruding particles increases the consumption of a lot of equipment, labor and electric energy, which adds a lot to the enterprise. Necessary expenditure, not the most economical and environmentally friendly

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