CN201615501U

CN201615501U - Direct-combustion type straw gasification furnace

Info

Publication number: CN201615501U
Application number: CN2009202785383U
Authority: CN
Inventors: 宋忠红
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-10
Filing date: 2009-11-10
Publication date: 2010-10-27
Anticipated expiration: 2019-11-10

Abstract

The utility model discloses a direct-combustion type straw gasification furnace. Biomass fuel is added in the furnace through a feeding opening or a combustor to be ignited; meanwhile, oxygen required for the biomass fuel is supplied by an ash receiving chamber and a secondary air inlet hole; the combustion state of the biomass can be controlled by adjusting the air supply amount, so that the biomass achieves the optimal gasification state. Combustible gas generated by cracking the biomass at high temperature drifts upward due to smaller specific gravity and is mixed with the air in a mixed chamber. The air in the mixed chamber can be supplied by the secondary air inlet hole; and the mixed amount of the air can be adjusted by adjusting the supply amount of the air. The mixed gas continuously drifts and moves upwards to the combustor and is remixed with the air and combusted in the combustor. The direct-combustion type straw gasification furnace has the advantages of low cost, simple structure, no power consumption and no tar and waste water; and in addition, the utility model is very popular among ordinary people during application, has high utilization rate for straws, achieves the aims of energy conservation, environmental protection and the recycle of renewable energy sources, and has higher popularization and application values.

Description

Direct-fired stalk gasifier

Technical field

The utility model relates to the preparation method of domestic direct-firing formula stalk gasifier.

Background technology

Domestic direct-firing formula stalk gasifier is to utilize living beings (as: agricultural waste material such as stalk, rice husk, branch, weeds or house refuse etc.) to burn under anaerobic condition, make most of combustible species be converted into fuel gas, for uses such as cooking, heatings.The full gasification furnace of common family expenses comprises updraft type fixed-bed gasification furnace and downdraft fixed-bed gasification furnace.Tar and waste water content in the combustion gas in use of this kind stove are higher, cause fuel gases calorific value lower, and the gas peculiar smell is big, consume electric power, contaminated environment, causes harmful effect in society, limited the domestic biomass gasification stove promotion and application.

The complicated cost height of existing domestic biomass half-gasification oven mechanism.As: number of patent application 200710078313.9 its stoves are at the manufacturing cost height, and structure is too complicated, has influenced the biomass half-gasification oven promotion and application.

Summary of the invention

For solving the high baroque drawback of existing domestic biomass half-gasification oven cost, the present invention simplifies the structure and has reduced cost, than the very big cost of existing stove saving, in popularization, be subjected to common people and welcome deeply, the utilization stalk is a raw material, improve the straw utilization rate, have higher promotional value, market prospects are wide.

The utility model relates to a kind of preparation method of direct-fired stalk gasifier.

The direct-fired stalk gasifier preparation method of the utility model directly links to each other the straw burning vaporizer with burner, and the gasification furnace lower furnace portion is that straw burning vaporizer, top are burner, and the intake method of employing secondary reaches the air supply of capacity.

The direct-fired stalk gasifier straw burning of the utility model vaporizer (abbreviating vaporizer as) directly links to each other with burner, the gasification furnace lower furnace portion is that high-temp combustion pyrolysis gasification chamber, top are burner, between vaporizer and burner, be provided with fuel gas and air mixing chamber (abbreviating mixing chamber as), be provided with two groups of inlet channels at the periphery of gasification furnace.

The up air inlet hole with vaporizer and mixing chamber of the direct-fired stalk gasifier burner hearth bottom of the utility model air is connected, and the air intlet of upper furnace is connected with the air inlet hole of burner.

The air inlet hole of the direct-fired stalk gasifier mixing chamber of the utility model is evenly distributed on conical mixing chamber and burner border.

There is steel plate kitchen range support border, the direct-fired gasifying stalk burner top of the utility model, and the top is the sky disk, and diameter empty in the disk is less than the kitchen range external diameter, and the end that kitchen range support has chimney.

On the direct-fired stalk gasifier vaporizer of the utility model burner hearth feed inlet and fire door are arranged.

The direct-fired gasifying stalk burner of the utility model is arranged on the gasification furnace roof of the furnace, and burner is that ironcasting and border are evenly distributed with the air inlet hole.

The direct-fired stalk gasifier vaporizer of the utility model air inlet passage is fire grate dreg discharge box place, and the air inlet passage of mixing chamber is the fresh air inlet on the wall of the body of heater left and right sides.

The direct-fired stalk gasifier of the utility model adds biomass fuel by feed inlet or burner in stove, light biomass fuel, at this moment, the required oxygen of biomass combustion can be supplied with by ash-accepting chamber and secondary air inlet hole, regulate the fired state that the air quantity delivered can be controlled living beings, make it reach best vaporized state.The fuel gas that the biomass high-temperature cracking produces mixes with air at mixing chamber because its proportion is less in upwards drift of furnace gas.The air of mixing chamber can be supplied with by the secondary air inlet hole, by regulating the air quantity delivered, can regulate the mixed volume of air.Mist continue to drift about and to be up to burner, and mixes once more with air and burn at burner.

The direct-fired stalk gasifier of the utility model does not need the fuel gas that the biomass combustion Pintsch process produces is collected, purified and transmits, there is not the handling problem of waste water and tar, there is not the power consumption problem, there is not gas peculiar smell problem, there is not the secondary pollution problem, overcome the deficiencies in the prior art and reduced cost, simplified furnace binding.Direct-fired gasifying stalk burner not exclusively is the burning of fuel gas, and living beings are also participated in burning directly, the flame of biomass combustion gasification is arranged, so be called direct-fired stalk gasifier in the time of burning.

Description of drawings

Accompanying drawing is a structural representation of the present utility model

1; Stove and accessory props up built on stilts disk, 2; Stove and accessory support, 3; Chimney and control valve, 4; Charge door and fire door, 5; Fire grate, 6 ash bins, 7; Vaporizer, 8 secondary intake openings, 9; Burner air air admission hole, 10; Mixing chamber, 11; Burner, A and B are sealing plates.

As shown in the figure, form fuel gas after the gasification of vaporizer (7) internal combustion, fuel gas proportion gentlier is up to mixing chamber (10), mix mutually with the air that enters by secondary intake opening (8) burner air air admission hole (9), and then again mix after-combustion to being up to burner (11) with air. The air master of vaporizer (7) enters by fire grate (5) ash bin (6), regulate control air influx by taking out out ash bin (6), the air gas pushing quantity of adjustable joint vaporizer reaches the combustion gasification state of adjusting living beings and generation and the firepower size of fuel gas. So that the burning of fuel gas reaches optimum state.

The A sealing plate prevents that the air that secondary intake opening (8) enters from flowing through burner, and the air that secondary intake opening (8) is entered is intensive directly to be entered mixing chamber (10) by burner air air admission hole (9) and fully mix with fuel gas.

The B sealing plate prevents that entering secondary intake opening by the air that ash bin enters affects gasification result.

The specific embodiment

Stalk fuel adds in the thorax by charge door and fire door (4), open chimney and control valve, draw back ash bin (6) a little, fire fuel, close charge door and fire door (4), the interior stalk fuel Pintsch process gasification of straw burning vaporizer (7) back formation fuel gas is up to mixing chamber (10) fully to be mixed with the air that burner air air admission hole (9) enters, fuel gas fully mixes after-combustion to being up to burner (11) with air more once more then, and stove and accessory props up built on stilts disk (1) and goes up the placement heating appliances.

Claims

1. direct-fired stalk gasifier, it is characterized in that: the straw burning vaporizer is directly linked to each other with burner, and the gasification furnace lower furnace portion is that straw burning vaporizer, top are burner.

2. direct-fired stalk gasifier, it is characterized in that: abbreviate the straw burning vaporizer as vaporizer (7) and directly link to each other with burner, the gasification furnace lower furnace portion is that high-temp combustion pyrolysis gasification chamber, top are burner, between vaporizer and burner, be provided with fuel gas and air mixing chamber and abbreviate mixing chamber (10) as, be provided with two groups of inlet channels at the periphery of gasification furnace.

3. according to the described direct-fired stalk gasifier of claim 2, it is characterized in that: the up air inlet hole with vaporizer and mixing chamber of burner hearth bottom air is connected, and the air intlet of upper furnace is connected with the air inlet hole of burner.

4. according to the described direct-fired stalk gasifier of claim 2, it is characterized in that: the air inlet hole of mixing chamber is evenly distributed on conical mixing chamber and burner border.

5. according to the described direct-fired stalk gasifier of claim 2, it is characterized in that: there is steel plate kitchen range support border, burner top, and the top is the sky disk, and diameter empty in the disk is less than the kitchen range external diameter, and the end that kitchen range support has chimney.

6. according to the described direct-fired stalk gasifier of claim 2, it is characterized in that: feed inlet is arranged on the vaporizer.

7. according to the described direct-fired stalk gasifier of claim 2, it is characterized in that: burner is arranged on the gasification furnace roof of the furnace, and burner is that ironcasting and border are evenly distributed with the air inlet hole.

8. according to the described direct-fired stalk gasifier of claim 2, its feature is being: there is secondary intake opening the furnace body outer wall left and right sides.