Biomass gasification centralized safety and early warning air supplying system

Abstract

The invention relates to a biomass gasification concentrating safety and early-warning gas supply system, mainly comprising a feeding rack, a wind-controlled gasification furnace, grouped water spraytowers, a horizontal spray filtering purification can, a double-tank tar retriever, a surplus heat utilization device and an underground wet gas reservoir. The invention mainly has the characteristicsthat 1) the pyrolysis, oxidation and reducing reaction in the gasification furnace can be actively controlled by wind to improve the gasification efficiency; 2) the tar in the system can be recycled,and the energy utilization rate is improved; 3) the gas has a long technical process, high quality and high purity; 4) the components of the gasification machine are easy to maintain independently; 5) the early-warning function has four levels, i.e. blue, yellow, orange and red, and the alarming mechanism can be used to control the system safety automatically. Therefore, the invention is capableof supplying biomass gas in a high efficient and safe manner.

Description

Technical field: [0001] The invention belongs to the technical field of biomass pyrolysis and gasification, and is particularly suitable for application in systems requiring centralized gas supply and safer gas supply for straw gasification. Background technique: [0002] Straw gasification and centralized gas supply system now have national industry standards and various patents announced, all of which have the same basic principles. Biomass is controlled pyrolysis, gasification and reduction into combustible gas in the gasifier. The technological process is similar, there are more or less processes, and the specific structure is only different in design. They all start from the feeding mechanism, start from the gas generated by the gasifier, and perform water bathing, spraying, filtering, purification, and storage processes through pipelines, and then supply them to users. [0003] A batch of straw gas stations built during the drought period in our country, due to immat...

AI Technical Summary

Problems solved by technology

In some gasification units, in the negative pressure operation section, the furnace temperature is low, the raw materials are not fully burned, and the gasification efficiency is not high

Insufficient gas production per kilogram of fuel leads to high gas cost per cubic meter, and enterprises are prone to losses

[0008] 2. Many of the grates of the gasifier are designed as a whole and cannot be turned over

Especially in summer, the temperature is high, the dust is large, and it is difficult for workers to clean the dust; it is even more difficult to maintain and replace the grate

Replacing the furnace grate still has to rely on foreign aid, and the shutdown time is long

[0009] 3. When the gasifier is in operation, the surface of the furnace body and the main gas outlet pipe are too high in temperature to easily hurt people, and the sheer heat cannot be used

[0010] 4. The gasification gas supply system structure of the unit, from water bath, spray, filtration, purification facilities, disassembly, maintenance, maintenance is difficult

The cost of dry gas tank is the highest, and the investment is large. It is not easy to choose dry gas tank to build a gas station

[0012] 6. When there is a special situation in the gas station or the surrounding area, when it is urgent to empty the sheath gas in the gas storage tank. The gas is not ignited, and the valve is manually opened, and the surrounding area is full of gas. It is dangerous and unsafe to encounter sparks.

[0013] 7. The currently operating straw gas station units do not have active, early warning, and alarm systems to monitor the safe operation of the gas station

Enterprises can only deal with accident losses passively, with great potential hidden dangers

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