Air-locking feeding device and biomass gasification system using same

Abstract

The invention discloses an air-locking feeding device, which comprises: an electric motor and a reduction gear connected therewith; a rotating shaft which is driven by the electric motor and the reduction gear to rotate and which extends toward a feeding port of a fluidized bed gasification reactor; a helical blade fixedly sleeved on the rotating shaft; and a feeding tube sleeved outside the helical blade, wherein the feeding tube is provided with a feeding port, which is positioned below a discharging port of a front storage device, and a discharging port, which is connected with a feeding port of the fluidized bed gasification reactor; the air-locking feeding device is provided with one or a plurality of air-locking structures. As the air-locking structures arranged inside the feeding device can prevent the gas, generated by the fluidized bed gasification reactor, from leakage into the air and the front storage device through the feeding device, spontaneous combustion, explosion, poisoning of people and other dangers caused by gas leakage are avoided and equipment, raw materials and operating staff are safeguarded.

Description

Technical field [0001] The invention relates to a lock air feed device and a biomass gasification reaction system using the biomass gas dispersing device. Background technique [0002] Biomass gasification has a history of more than 100 years. The original gasification reactor was produced in 1883. It used charcoal as the raw material and the gas after gasification to drive the internal combustion engine. During the Second World War, Germany vigorously developed on-board vaporizers for civilian cars, and formed a complete technology for automobile engines. At that time, biomass gasification mainly used fixed-bed gasification reactors, and its technical level reached a fairly complete level. [0003] Biomass gasification refers to the processing of biomass raw materials, and then sending them into a gasifier, where they are gasified and cracked under oxygen-deficient conditions to obtain combustible gas. Sometimes, the produced gas needs to be purified according to application nee...

AI Technical Summary

Problems solved by technology

[0010] (1) The gasification efficiency of the gasifier is low

Biomass raw materials cannot be gasified well, the energy utilization rate is low, energy waste is serious, and it is easy to cause more ash and slagging in the gasifier;

[0011] (2) Gas calorific value is low

The lower calorific value not only increases the cost of gas storage, but also increases the gas consumption per household, which increases user expenditure and limits the enthusiasm of users for gas consumption;

[0012] (3) High impurity content

Tar and dust deposits are serious, and the centralized gas supply system cannot operate safely for a long time

Not only did it affect the continuity of production, but it also caused flames to rise up in the factory building, and the pipeline formed a negative pressure backfire explosion;

[0013] (4) Secondary pollution problem

They pose a hazard to the growth and safety of animals and plants, thus causing secondary pollution

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