CN201177281Y - A biomass gasifier - Google Patents

Abstract

The utility model discloses a biomass gasification furnace, which comprises a pyrolysis furnace, a furnace cover, a filter and an air outlet pipe composed of a furnace liner, an insulating layer, a furnace shell, a furnace grate and an air inlet pipe. The side wall of the furnace is closely attached to the side wall of the filter, and there are vent holes in the connection; a ring-shaped water tank is arranged on the furnace mouth of the pyrolysis furnace, and the edge of the furnace cover is covered in the ring-shaped water tank. There is a three-way pipe at the lower end of the filter, one end of the three-way pipe communicates with the filter, the other end communicates with the air inlet pipe to make it a return air pipe, and the other end is a waste water discharge pipe, and a control switch is installed on the three-way pipe . Compared with the prior art, the utility model has the advantages that the pyrolysis furnace and the filter are integrated, the structure is more compact, space is saved, and raw materials are saved in production; It will run smoke and leak gas, and the sealing performance is good, which improves the gas production efficiency; the gas return pipe is set up. When there is no need to use a large amount of gas, the switch of the gas return pipe can be turned on to let part of the gas flow back into the pyrolysis furnace, further saving energy.

Description

A biomass gasifier

technical field

The utility model relates to a cooking stove, in particular to a biomass gasification furnace.

Background technique

Biomass energy has always been an important energy source for human survival. It ranks fourth in the world's total energy consumption after coal, oil and natural gas, and occupies an important position in the entire energy system. Experts predict that biomass energy will become an important part of the sustainable energy system in the future. By the middle of this century, various biomass alternative fuels produced with new technologies will account for more than 40% of the total global energy consumption.

my country is a country with a large population and a country with rapid economic development. With the improvement of rural economic conditions, rural transportation, communication, housing and other infrastructure construction have achieved rapid development, but straw, firewood, etc. are still the main energy for cooking and heating for the majority of farmers. In order to change the backward way of using energy for cooking and heating by directly burning straw and firewood for thousands of years in rural areas, in recent years, scientific and technological achievements in researching, developing and utilizing biomass energy to make it renewable and clean energy continue to Emerging, of which the development and utilization of biomass gasification technology occupies a considerable proportion. Biomass gasification technology is an energy conversion process of burning and reducing biomass raw materials such as orange stalks, grasses, shells, and firewood under anoxic conditions. Cracking of carbohydrates and resynthesis of hydrocarbon combustible gases. There are many types of biomass gasifiers that have been disclosed so far, among which there are quite a few gasifiers whose pyrolysis furnace and filter are separated, and are connected by pipelines in the middle. It also wastes materials; in addition, there are quite a few gasifiers with poor sealing performance of the furnace cover, and the problem of leakage of smoke and gas occurs.

Contents of the invention

One of the technical problems to be solved by the utility model is to provide a biomass gasifier with a compact structure, and the pyrolysis furnace and the filter are integrated; the second technical problem to be solved is to provide a kind of airtight performance of the pyrolysis furnace cover Good biomass gasifier.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a biomass gasification furnace, including a pyrolysis furnace and a filter composed of a furnace liner, an insulating layer, a furnace shell, a furnace grate, a furnace cover, and an air inlet pipe 1. Outlet pipe, which is characterized in that the side wall of the pyrolysis furnace is closely attached to the side wall of the filter, and a vent hole is provided at the tight connection; a ring-shaped water tank is provided on the mouth of the pyrolysis furnace, and the edge of the furnace Covered in a ring sink.

The utility model also has the following features:

There is a three-way pipe at the lower end of the filter, one end of the three-way pipe communicates with the clean air storage room in the filter, the other end communicates with the air inlet pipe to make it a return air pipe, and the other end is a waste water discharge pipe. There is a control switch on the tube.

Compared with the prior art, the utility model has the advantage that the pyrolysis furnace and the filter are integrated into one body, the structure is more compact, space is saved, and raw materials are saved in production; It will run smoke and leak gas, and the sealing performance is good, which improves the gas production efficiency; the return gas pipeline is set up, and when a large amount of gas is not needed, the return gas switch can be turned on to allow part of the gas to flow back into the pyrolysis furnace, further saving energy.

Description of drawings

Fig. 1 is a schematic plan view of the utility model.

The figure is marked as: 1 is the pyrolysis furnace, 2 is the filter, 3 is the ventilation pipe, 4 is the air inlet pipe, 5 is the grate, 6 is the furnace cover, 7 is the ash outlet, 8 is the air inlet, 9 10 is the air return pipe, 11 is the air return pipe switch, 12 is the filter drain pipe, 13 is the air outlet pipe, 14 is the filter layer, 15 is the baffle plate of the filter layer, 16 is the clean air storage room, and 17 is the three-way pipe .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Accompanying drawing 1 is a schematic plan view of the utility model, clearly shows that the utility model comprises three parts of pyrolysis furnace 1, filter 2, outlet pipe 13 in the accompanying drawing, and is furnace gall in the pyrolysis furnace 1 (not shown in the figure marked), the outside is the furnace shell (not marked in the figure), the insulation layer (not marked in the figure) is between the furnace liner (not marked in the figure) and the furnace shell, and the lower end of the furnace liner is provided with a grate 5 and a pyrolysis furnace 1 The bottom is provided with an air inlet pipe 4 and an ash outlet 7, and the air inlet pipe 4 bends upwards through the grate 5 in the furnace, and an air inlet hole 8 is arranged on the pipe wall at the inner end of the furnace of the air inlet pipe 4. The outer end of pipe 4 is provided with air blower (not shown in the figure); On the furnace mouth of pyrolysis furnace 1, ring-shaped water tank 9 is arranged, and the furnace cover 6 edge of pyrolysis furnace 1 is placed in ring-shaped water tank 9; The lower end of the device 2 is provided with a three-way pipe 17, one end of the three-way pipe 17 communicates with the clean air storage room 16 in the filter, and the other end communicates with the air inlet pipe 4, making it a return air pipe 10, and the other end is a waste water discharge pipe 12. A control switch 11 is provided on the tee pipe 17 road. Filter 2 is made up of housing (not marked in the figure), filter layer 14, filter layer baffle plate 15, clean air storage room 15, filter material can be selected filter cotton, or corn pistil, or pine nut, or pine bark, Or charcoal is made, and the lower end side of filter 2 is provided with the air outlet pipe 13 that conveys combustible gas, and combustible gas is input on the gas stove and uses.

Claims (3)

1. A biomass gasification furnace, comprising a pyrolysis furnace (1) composed of a furnace liner, an insulating layer, a furnace shell, a furnace grate (5), a furnace cover (6), and an air inlet pipe (4), and a filter (2), gas outlet pipe (13), is characterized in that: the side wall of described pyrolysis furnace (1) and described filter (2) side wall are close together, make it become integral shape, Ventilation holes (3) are arranged at the tight joints to communicate with each other. 2. A biomass gasification furnace according to claim 1, characterized in that: a ring-shaped water tank (9) is arranged on the furnace mouth of the pyrolysis furnace (1), and the edge of the furnace cover (6) is covered In the annular tank (9). 3. A biomass gasifier according to claim 1 or 2, characterized in that: a three-way pipe (17) is provided at the lower end of the filter (2), and one end of the three-way pipe (17) It is communicated with the clean air storage room (16) in the filter, and the other end is communicated with the air inlet pipe (4), making it a return air pipe (10), and the other end is a waste water discharge pipe (12), on the tee pipe A control switch (11) is provided, and the air outlet pipe (13) is arranged beside the lower part of the filter (2) and connected with the clean air storage room (16).

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