CN204901771U - Pyrolysis gasifier - Google Patents

Abstract

The utility model discloses a pyrolysis gasification furnace, which comprises a furnace body. The furnace body is composed of a gasification chamber, a second combustion chamber and a casing in sequence from the inside to the outside. A combustion cavity, the outer wall of the gasification chamber is made of high-temperature-resistant and heat-conducting materials, and several guide tubes are arranged on the outer wall, the guide tubes communicate with the combustion cavity, and the middle part of the gasification chamber is provided with A stirring device, the stirring shaft of the stirring device is a hollow structure, and an oxygen supply hole is arranged on the stirring shaft, and the bottom end of the stirring shaft is connected with the oxygen supply device. The utility model realizes the layered gasification and full decomposition of organic matter in garbage through the gasification chamber, realizes the full combustion and harmlessness of the gasification gas through the second combustion chamber, and finally realizes the harmless and reduction treatment and disposal of waste .

Description

A pyrolysis gasifier

technical field

The utility model relates to a pyrolysis gasification furnace, in particular to a pyrolysis gasification furnace.

Background technique

With the acceleration of new rural construction, the rural population has changed from relatively scattered to relatively concentrated. How to properly dispose of the generated garbage has become an urgent problem. Due to the relatively scattered points of rural garbage, it is difficult to collect, and the transportation distance is long, the overall coverage of rural garbage collection and transportation will lead to high transportation costs; at the same time, my country's rural areas lack relatively low investment costs and operating costs. Most of the technologies and equipment used to dispose of garbage are treated by original stacking, simple landfill, open-air incineration, etc., which directly threaten the production and life of farmers, and the harmless treatment of rural garbage is imminent.

Utility model content

The purpose of this utility model is to provide a pyrolysis gasifier to solve the problem of serious environmental pollution caused by the lack of harmless treatment equipment for rural garbage.

The purpose of this utility model is to realize through the following technical solutions:

A pyrolysis gasification furnace, including a furnace body, the furnace body is a gasification chamber, a second combustion chamber, and a shell in sequence from the inside to the outside, and the second combustion chamber is a plurality of combustion chambers arranged at intervals along the longitudinal direction , the outer wall of the gasification chamber is made of high-temperature-resistant and heat-conducting materials, and several guide tubes are arranged on the outer wall. The guide tubes communicate with the combustion chamber, and a stirring device is arranged in the middle of the gasification chamber. The stirring shaft of the stirring device has a hollow structure, and oxygen supply holes are arranged on the stirring shaft, and the bottom end of the stirring shaft is connected with the oxygen supply device.

As a preferred solution of the utility model, the gasification chamber includes a drying section, a pyrolysis gasification section, a combustion section, and an ash hopper in order from top to bottom.

As a preferred solution of the present utility model, the combustion cavity is a spiral baffle structure.

As a preferred solution of the present utility model, a honeycomb air intake device is provided at the baffle of the combustion cavity, and a vent hole is opened on the housing, and the honeycomb air intake device is connected with the air vent on the housing. The pores are connected.

The beneficial effect of the utility model is that the utility model realizes the layered gasification and full decomposition of organic matter in the garbage through the gasification chamber, realizes the full combustion and harmlessness of the gasification gas through the second combustion chamber, and finally realizes the non-toxic treatment of waste. Hazardous and reduction treatment and disposal.

Description of drawings

Fig. 1 is a schematic structural view of a pyrolysis gasification furnace of the present invention.

In the picture:

1. Support; 2. Combustion cavity; 3. Feed inlet; 4. Drying section; 5. Pyrolysis gasification section; 6. Combustion section; 7. Guide tube; 8. Refractory brick; 9. Stirring shaft ; 10. Oxygen supply device.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments. It can be understood that the embodiments described here are only used to explain the utility model, rather than limit the utility model.

Please refer to FIG. 1 , which is a schematic structural diagram of a pyrolysis gasifier of the present invention.

In this embodiment, a pyrolysis gasification furnace includes a support 1 and a furnace body supported by the support 1, and the furnace body is a gasification chamber, a second combustion chamber, and a shell in sequence from the inside to the outside. There are ventilation holes on the casing, and the second combustion chamber is a plurality of combustion chambers 2 arranged at intervals in the longitudinal direction. A honeycomb air intake device is provided, and the honeycomb air intake device communicates with the vent holes on the shell. The outer wall of the gasification chamber is made of refractory bricks 8, and several guide pipes are arranged on the outer wall 7. The guide pipe 7 is connected with the combustion chamber 2, and the gasification chamber is sequentially composed of the drying section 4, the pyrolysis gasification section 5, the combustion section 6, and the ash hopper from top to bottom. The middle part of the gasification chamber is provided with a stirring device, the stirring shaft 9 of the stirring device is a hollow structure, and an oxygen supply hole is arranged on the stirring shaft 9, and the bottom end of the stirring shaft 9 is connected with the oxygen supply device 10,

When working, the garbage enters the gasification chamber from the feed port 3 of the furnace body, and is first dried in the drying section 4 by wall radiation, high-temperature pyrolysis gasification flue gas, and pyrolysis gasification section 5. Moisture evaporates, and after drying, the garbage decomposes into combustibles such as carbon monoxide and gaseous hydrocarbons in the pyrolysis and gasification section 5 and enters the mixed flue gas. The residue after pyrolysis and gasification enters the combustion section 6 for full combustion, and the oxygen in the combustion section 6 Provided by the oxygen supply hole on the stirring shaft 8, the oxygen supply is effectively guaranteed. The combustion section 6 can be divided into a reduction zone and an oxidation zone from top to bottom. In the oxidation zone, carbon, tar and oxygen undergo violent oxidation reactions, and the combustion The heat generated is used to provide the heat required for the reduction zone, the pyrolysis gasification section 5, and the drying section 4. In the reduction zone, carbon dioxide and water are reduced by hot carbon to produce combustible gases such as carbon monoxide and hydrogen, which enter the mixed flue gas , the residue fully burned by the combustion section 6 falls into the ash hopper and is regularly discharged out of the furnace by the automatic slag remover. It is a spiral baffle structure, which prolongs the time of the mixed smoke in it, and can effectively ensure the full combustion of the mixed smoke, and the combustion chamber 2 adopts a baffle structure that can be used for sedimentation and dust removal, so that the combustibles can be fully burned while other The entrained dust settles during the deflection process and is discharged by the ash discharge device.

The guide pipe 7 of the utility model is arranged in the middle of the gasification chamber, so that the mixed flue gas enters the combustion chamber 2 of the secondary combustion chamber from the middle of the gasification chamber, which is different from the traditional smoke exhaust method. The traditional smoke exhaust arrangement is two Type: arranged at the upper or lower end of the furnace body, arranged at the upper end, because it is close to the drying section 4, the flue gas is easy to be mixed with moisture, arranged at the lower end, due to flowing through the ash hopper, a large amount of dust will be carried in the flue gas, this application will refer to it as Arranged in the middle of the gasification chamber and submerged in the material, the water vapor generated in the drying section 4 is not easy to pass through the pyrolysis gasification section 5 and the combustion section 6 and enter the draft tube 7, thereby reducing the moisture content of the flue gas and improving the heat of the flue gas value, and can make the upward high-temperature flue gas turn back, thereby reducing the dust concentration in the flue gas.

The above embodiments only set forth the basic principles and characteristics of the present utility model, and the present utility model is not limited by the above-mentioned embodiments. Under the premise of not departing from the spirit and scope of the present utility model, the present utility model also has various changes and changes. These Variations and changes are within the scope of the claimed invention. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A pyrolysis gasification furnace, characterized in that: it comprises a body of furnace, said body of furnace is successively a gasification chamber, a second combustion chamber, and a shell from the inside to the outside, and said second combustion chamber is arranged at intervals along the longitudinal direction The outer wall of the gasification chamber is made of heat-resistant and heat-conducting materials, and several guide tubes are arranged on the outer wall. The guide tubes communicate with the combustion chamber, and the middle part of the gasification chamber A stirring device is provided, the stirring shaft of the stirring device is a hollow structure, and oxygen supply holes are arranged on the stirring shaft, and the bottom end of the stirring shaft is connected with the oxygen supply device. 2. A pyrolysis gasification furnace according to claim 1, characterized in that: the gasification chamber is sequentially composed of a drying section, a pyrolysis gasification section, a combustion section, and an ash hopper from top to bottom. 3. A pyrolysis gasifier according to claim 1, characterized in that: the combustion chamber is a spiral baffle structure. 4. A kind of pyrolysis gasification furnace according to claim 3, it is characterized in that: the baffle of the combustion chamber is provided with a honeycomb air intake device, the housing is provided with ventilation holes, the The honeycomb air intake device communicates with the air hole on the housing.