CN201059608Y

CN201059608Y - Tar self-heating catalyze cleavage biomass gas producing furnace

Info

Publication number: CN201059608Y
Application number: CNU2007200637477U
Authority: CN
Inventors: 周松林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-02
Filing date: 2007-07-02
Publication date: 2008-05-14
Anticipated expiration: 2017-07-02

Abstract

The utility model relates to a tar self-heating catalytic pyrolysis biomass gas fabricating furnace, wherein, a lytic response pipe (2) is arranged on the lower part of a furnace cavity (1); one end of the lytic response pipe (2) is communicated with a gas mixture outlet (5) arranged on the upper part of the furnace cavity through a gas-guide tube (3) arranged inside the furnace wall; an air outlet (11) of the lytic response pipe (2) is communicated with the outside of the furnace; an annular sink (4) is arranged on the periphery of the upper part of the furnace cavity (1); the gas mixture outlet (5) is arranged inside the annular sink (4). By utilization of heat energy generated by biomass during the process of transforming gas and matching with tar and water content in catalytic pyrolysis gas, tar and water content in biomass gas mixture can be transformed into burnable gas, thereby the utility model has the advantages of simple operation, no existence of secondary pollution, and low cost.

Description

A kind of tar self-heating catalytic pyrolysis biomass gas-making furnace

Technical field

The utility model relates to a kind of stove and accessory, specifically, is a kind of biomass gas-making furnace tool.

Background technology

Biomass gas-making furnace is a kind of device that biomass fuel is converted into imflammable gas, the fuel gas that it transformed is a kind of air mixture, mainly contain carbon monoxide, hydrogen, methane, ethane, propane etc., be widely used in cooking, heating, shower and energy consumption of industry.In recent years, because energy problem becomes increasingly conspicuous, the exploitation of living beings regenerative resource more and more causes people's attention, and country has listed biomass energy in medium-term and long-term great exploration project, and the research and development of biological fuel gas reforming unit have more and more caused people's attention and attention.Only the disclosed relevant biomass gas-making furnace tool of Chinese patent just has the hundreds of kind, has also occurred a variety of biomass-making device of air on the market.But for a long time, because the tar in the biological fuel gas is difficult to handle, the popularization of biomass furnace is subjected to serious restriction.

Tar exist (according to interrelated data, the energy of tar generally accounts for the 5-15% of combustion gas total amount) unfavorable to utilizing of biological fuel gas, it not only reduces living beings gasifications benefit, and can cause energy waste.In the biomass gasifying furnace application process, tar is transported to clarifier with combustion gas from wireway, and clarifier is transported to gas-cooker by pipeline again, is condensed into liquid when tar is progressively turned cold by heat in the meantime, and combine with elements such as water and carbon, cause gasification furnace to stop up gas pipeline.Just because of this, the biomass gasifying furnace tool fails extensively to be promoted.In order to solve the tar problem in the living beings air mixture, people have launched a lot of researchs, have obtained certain effect.Method, centrifugal separation, recoil method etc. are exhaled in have WATER-WASHING METHOD, the suction of now having used.And the Pintsch process technology of possible in theory, also have no talent in the biomass gas-making furnace industry at present and in actual product, use, only in laboratory applications, laboratory applications need be replenished other energy just can reach a high temperature cracking condition and effect, no actual application value.

Generally speaking, the tar processing method of existing biological fuel gas reforming unit all exists tar separation and lytic effect poor, and there are defectives such as secondary pollution and cost height in technical sophistication, does not fit into the application of family with the biomass gas-making furnace tool especially.

Summary of the invention

The purpose of this utility model is to provide a kind of biological fuel gas reforming unit, it utilizes this heat energy that produces of living beings in transforming gas process, and tar and moisture content in the combustion gas of cooperation cracking catalyst, make tar and moisture content in the living beings air mixture be converted into fuel gas, but and automatic water supplement, simple to operate, there is not secondary pollution.

For achieving the above object, a kind of tar self-heating catalytic pyrolysis biomass gas-making furnace that the utility model provides, have burner hearth, bell, air mixture outlet and air intake passage, the air mixture outlet is communicated with upper furnace, air intake passage is communicated with lower furnace portion, it is characterized in that, be provided with the cracking reaction pipe in the bottom of burner hearth, one end of cracking reaction pipe is connected the air mixture outlet of upper furnace by wireway, outside the logical stove of the gas outlet termination of cracking reaction pipe, be provided with annular water tank around the upper furnace, the air mixture outlet is located in the annular water tank.

For increasing feeding quantity, also have additional barrel at roof of the furnace, increase barrel and place annular water tank, increase the barrel top and be provided with sealed cistern, when bell covered, the lid of bell was along being arranged in sealed cistern.The described diameter that increases the barrel bottom increases barrel and is provided with snap ring less than empty diameter in the burner hearth, increases barrel and places annular water tank by snap ring, and the air mixture outlet is positioned at the snap ring inboard, increases and leaves the airway that burner hearth communicates with annular water tank outside the barrel bottom.

Described cracking reaction pipe laterally or gas outlet one end be inclined upwardly and be arranged at the Lu Tang bottom, make by the heat conduction temperature resistant pipe.

The outer surface of described cracking reaction pipe is provided with heat absorbing sheet, to increase the heating surface area of cracking reaction pipe.

The two ends of described cracking reaction pipe are respectively equipped with removable cover, so that the packing into and remove the gred of catalyst, the sidepiece at cracking reaction pipe two ends is located in the air inlet of cracking reaction pipe and gas outlet.

The utility model utilizes this heat energy that produces of living beings in transforming gas process, and tar and moisture content in the combustion gas of cooperation cracking catalyst, make tar and moisture content in the living beings air mixture be converted into fuel gas, and do not need other thermal source to realize coke tar cracking, coke tar cracking is abundant, there is not secondary pollution, can improves the quality of the combustion gas of producing.And carry out moisturizing automatically, simple to operate, with low cost.

Description of drawings

Accompanying drawing is the utility model structural representation;

Among the figure, 1-burner hearth, 2-cracking reaction pipe, 3-wireway, the 4-annular water tank, 5-air mixture outlet, 6-escape pipe, 7, the 8-removable cover, the 9-heat absorbing sheet, 10-air inlet, 11-gas outlet, 12-catalyst for cracking, the 13-air inlet, the 14-bell, 15-oxidation high-temperature region, 16-increases barrel, 17-sealed cistern, 18-increase the barrel bottom, the 19-handle, the 20-air intake passage, 21-snap ring, 22-airway

The specific embodiment

As shown in the figure, tar self-heating catalytic pyrolysis biomass gas-making furnace has burner hearth 1, bell 14, air mixture outlet 5 and air intake passage 20, and air mixture outlet 5 is communicated with burner hearth 1 top, air intake passage 20 is communicated with burner hearth 1 bottom, and the air inlet 13 of air intake passage 20 communicates with atmosphere.Oxidation high-temperature region 15 in burner hearth 1 bottom is provided with cracking reaction pipe 2, and the outer surface of cracking reaction pipe 2 is provided with heat absorbing sheet 9, and heat absorbing sheet 9 can increase the heating surface area of cracking reaction pipe.The air inlet 10 of cracking reaction pipe 2 is communicated with air mixture outlet 5 by the wireway 3 that is located at the inboard, furnace wall, is provided with annular water tank 4 in burner hearth 1 upper inner, and air mixture outlet 5 is located in the annular water tank 4.The air inlet 10 of cracking reaction pipe 2 and gas outlet 11 are located at the sidepiece at cracking reaction pipe 2 two ends respectively, and gas outlet 11 is provided with combustion gas escape pipe 6 and stretches out outside the stove.Gas outlet 11 1 ends of cracking reaction pipe 2 are inclined upwardly slightly, and the termination, two ends of cracking reaction pipe 2 is respectively equipped with

removable cover

7,8, open

removable cover

7,8 and can put into catalyst for cracking 12 such as charcoal and remove reacted residue.For increasing the feeding quantity of burner hearth, be provided with at roof of the furnace and increase barrel 16, the diameter that increases barrel bottom 18 is less than empty diameter in the burner hearth 1, increase barrel 16 and be provided with snap ring 21, increase barrel 16 and place annular water tank 4 by snap ring 21, air mixture outlet 5 is provided with and is in the annular water tank 4, and is positioned at snap ring 21 inboards.Increase outside the barrel bottom 18 and leave the airway 22 that communicates with annular water tank 4, increase barrel 16 tops and be provided with sealed cistern 17, when bell 14 covered, the lid of bell 14 was along being arranged in annular water tank 4.

In the use, at first put into the catalyst for cracking of charcoal or lime stone and so in cracking reaction pipe 2, the granularity of catalyst for cracking is 0.5～5cm.After biomass fuel in the burner hearth 1 is lit a fire from lower furnace portion, after after a while, begin to produce air mixture, and make the temperature of oxidizing fire pipe rise to 700-900 ℃.Except that containing fuel gas, also contain tar and moisture in the air mixture, in the process of the annular water tank 4 that passes through burner hearth 1 top, further keep the skin wet.The air mixture outlet 5 of air mixture from annular water tank 4 enters cracking reaction pipe 2 through wireway 3, and tar in the air mixture and moisture under the effect of catalyst for cracking cracking take place cracking reaction pipe 2 in, generation CO and H ₂And so on fuel gas, derive from the escape pipe 6 of cracking reaction pipe 2.

Claims

1. tar self-heating catalytic pyrolysis biomass gas-making furnace, has burner hearth (1), bell (14), air mixture outlet (5) and air intake passage (20), air mixture outlet (5) is communicated with burner hearth (1) top, air intake passage (20) is communicated with burner hearth (1) bottom, it is characterized in that, be provided with cracking reaction pipe (2) in burner hearth (1) bottom, one end of cracking reaction pipe (2) is connected the air mixture outlet (6) of upper furnace by wireway (3), the gas outlet (11) of cracking reaction pipe (2) is connected outside the stove, be provided with annular water tank (4) around burner hearth (1) top, air mixture outlet (5) is located in the annular water tank (4).

2. tar self-heating catalytic pyrolysis biomass gas-making furnace according to claim 1, it is characterized in that, have additional barrel (16) at burner hearth (1) top, increase barrel (16) and place annular water tank (4), increase barrel (16) top and be provided with sealed cistern (17), bell (14) is when covering, and the lid of bell (14) is along being arranged in sealing water (17) groove.

3. tar self-heating catalytic pyrolysis biomass gas-making furnace according to claim 2, it is characterized in that, the diameter of the described bottom (18) that increases barrel (16) is less than empty diameter in the burner hearth (1), increase barrel (16) and be provided with snap ring (21), increase barrel (16) and place annular water tank (4) by snap ring (21), air mixture outlet (5) is positioned at snap ring (21) inboard, increases and leaves the airway (22) that burner hearth (1) communicates with annular water tank (4) outside barrel (16) bottom.

4. tar self-heating catalytic pyrolysis biomass gas-making furnace according to claim 1 is characterized in that, the high-temperature oxydation district (15) that described cracking reaction pipe (2) is horizontal or gas outlet one end is inclined upwardly and is arranged at lower furnace portion.

5. tar self-heating catalytic pyrolysis biomass gas-making furnace according to claim 1 is characterized in that the outer surface of described cracking reaction pipe (2) is provided with heat absorbing sheet (9).

6. tar self-heating catalytic pyrolysis biomass gas-making furnace according to claim 1, it is characterized in that, the two ends of cracking reaction pipe (2) are respectively equipped with removable cover (7), (8), and the sidepiece at cracking reaction pipe (2) two ends is located in the air inlet (10) of cracking reaction pipe (2) and gas outlet (11).