CN201513927U

CN201513927U - Straw direct-fired gasification furnace

Info

Publication number: CN201513927U
Application number: CN200920101058XU
Authority: CN
Inventors: 吕朝曦
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-12
Filing date: 2009-10-12
Publication date: 2010-06-23
Anticipated expiration: 2019-10-12

Abstract

The utility model discloses a straw direct-fired gasification furnace which comprises a furnace body, a flue and a water storage tank or a heating system, wherein a furnace cover (1) is arranged at the upper part of the furnace body, a furnace pipe (2) is arranged in the furnace body, a furnace grate (3) is arranged at the lower part, a water inlet (10) and a water outlet (11) are formed on the furnace body, the furnace pipe (2) consists of an inner wall and an outer wall and is conical as a whole, an annular cavity (5) is formed between the inner wall and the outer wall, and a secondary combustion chamber (6) is formed at the upper part; an ash receiving box (4) is arranged at the lower part of the furnace grate (3); and a water pipe (8) is arranged in the flue (7), the annular cavity (9) is arranged outside the flue (7), and the water pipe (8) and the annular cavity (9) are communicated with the annular cavity (5) of the furnace pipe (2). The straw direct-fired gasification furnace uses the conical furnace pipe, thereby leading straw to produce swirl gasification and release heat during the combustion process; and the annular cavity between the inner wall and the outer wall can effectively utilize the heat produced by fuel combustion and flue gas, thereby realizing good gasification during the combustion of the straw and high utilization rate of heat efficiency, and being used for cooking and bathing while heating.

Description

Stalk direct combustion gasification furnace

One, technical field

The utility model relates to gasification furnace, specifically is a kind of stalk direct combustion gasification furnace.

Two, background technology

Along with the raising of people's living standard, variation has also taken place with fuel structure in peasant household's life, and agricultural crop straw no longer is the main fuel of farmers' family.It is estimated that national agricultural crop straw just has about 800,000,000 tons every year, but the straw utilization rate only accounts for 30%, other part is used for papermaking, feed, chopping and returning, and another part is all burned or be discarded, both contaminated air, not only destroy ecological environment, also wasted valuable recycling resource.Use gasification furnace with discarded straw burning, and the heat energy of straw burning generation is utilized, be undoubtedly a comparatively reasonable use method.At present, the type of stalk gasifier is a lot, but most complex structure, and simple in structure be the mode that the single utilization combustion product gases heats, the efficiency of heating surface is not good enough; It is bad to gasify during straw burning, and the plant tar that produces in the combustion process is discharged contaminated environment with flue gas.

Three, summary of the invention

The purpose of this utility model provides a kind of stalk direct combustion gasification furnace, the bad problem of gasification when solving straw burning, and the utilization rate of the raising thermal efficiency reduces tar content in the discharged flue gas, environment purification.

The utility model is achieved through the following technical solutions: stalk direct combustion gasification furnace comprises body of heater, flue and storage tank or heating system, upper of furnace body has bell, inside is provided with flue, the bottom is provided with fire grate, body of heater is provided with entery and delivery port, and described flue is made of inside and outside wall, and whole is taper, be toroidal cavity between the inside and outside wall, top is provided with secondary combustion chamber; The fire grate bottom is provided with ash accepting box; Water pipe is arranged in the flue, toroidal cavity and communicate with the toroidal cavity of flue arranged outward.

The beneficial effect that the utility model is had compared with the prior art is:

1, the utility model uses the cone flue, and it is whirl wind gasified that stalk is produced in combustion process, discharges heat energy, and the heat that the toroidal cavity between the inside and outside wall can produce fuel combustion and flue gas effectively utilizes, and can cook when heating, bathing.

2, the utility model has kept the traditional habit of direct burning when igniting, and fuel source makes things convenient for, is easy to get, and the flue gas of discharge is a white, and tar content is low, environmental protection, safe, practical.

Four, description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model;

Fig. 2 is the vertical view of Fig. 1.

Among the figure: 1 bell, 2 flues, 3 fire grates, 4 ash accepting box, 5 toroidal cavities, 6 secondary combustion chambers, 7 flues, 8 water pipes, 9 toroidal cavities, 10 water inlets, 11 delivery ports, 12 fuel inlets, 13 supports, 14 baffle plates, 15 pull bars.

Five, the specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 provides structural representation of the present utility model, and Fig. 2 is the vertical view of Fig. 1, in conjunction with Fig. 1, shown in Figure 2, the utility model comprises body of heater and heating system, and bell 1 is housed above the body of heater, and inside is provided with flue 2, the bottom is provided with fire grate 3, and ash accepting box 4 is arranged at the bottom of fire grate 3.Better for the combustion efficiency that makes stalk, can 4 times blower fan be set at fire grate, from 4 times blowing-in and combustion-supportings of fire grate.Flue 2 is made of inside and outside wall, and is whole for taper, is toroidal cavity 5 between the inside and outside wall.Water pipe 8 is arranged in the flue 7, toroidal cavity 9 is arranged outward, water pipe 8 communicates with toroidal cavity 9, and water pipe 8, toroidal cavity 9 communicate with flue 2, as aquaporin.In order to prevent that the excessive heat of flue gas flow runs off, baffle plate 14 can be set at the inlet of flue 7, baffle plate 14 connects a pull bar 15, drives baffle plate 14 by pull bar 15, makes it to open or close the flow of controlling flue gas.The top of flue 2 is secondary combustion chamber 6, and secondary combustion chamber 6 tops are circular, and the bottom is a tubular, and fresh air inlet is circumferentially arranged, secondary combustion chamber 6 be installed at the fixing support 13 that constitutes by transverse slat and column of flue 2 on.Bell 1 on the body of heater is to cover suitable for reading at secondary combustion chamber 6.The delivery port 11 of body of heater is arranged in the flue 7, and passes in the flue 7 with outside hot water storage tank or heating system and be connected.The delivery port 11 of body of heater can directly connect heating system or hot water storage tank, also can connect hot water storage tank and heating system simultaneously respectively, by the heating system heating that connects, provide bath water by the hot water storage tank that connects, the kitchen range top is directly cooked on the body of heater, realizes heating, bathing, cooks and carry out simultaneously.In order effectively to prevent thermal loss, can outside body of heater, install heat-insulation layer additional.

During use, feed cold water, send into stalk, after lighting, as blower fan is installed, by the blower fan blowing-in and combustion-supporting of 3 times settings of fire grate by the fuel inlet 12 of flue 2 bottoms by water inlet 10.Stalk burns from bottom to top, circles round at chance flue 2 tapered courage walls suitable for reading in the uphill process, and is the Scroll-tupe burning within it, and heating flue 2 is directly with the heating of the water in the toroidal cavity between the flue inside and outside wall 5.The flame of rotary combustion is in the process that rises, through secondary combustion chamber 6, it is combustion-supporting that the wind that is entered by secondary combustion chamber 6 circumferential holes carries out second gasification, will tie to gather at secondary combustion chamber 6 inside and outside tar in secondary combustion chamber 6 and burn, and reduces the content of discharging tar in the flue gas.Fully the flue gas of burning back formation is in the process of discharging, and the water pipe 8 in the flue 6 of will flowing through again, the water of toroidal cavity 9 heat once more.Ash behind the straw burning directly falls into the ash accepting box 4 below the fire grate 3.Heated water enters hot water storage tank or heating system by delivery port 11, and confession is warmed oneself or cooked, heats up water, bathing is used.

The utility model is except that using straw to do the fuel, and other is as rice husk, shell, cavings, branch, sawdust, wood shavings, weeds; The rattan class of various plants, stem class, leaf class, root class; The residue of the pharmaceutical factory of traditional Chinese medicine, press for extracting juice sugar refinery, cigarette factory; Disposable lunch box, foam, polybag, waste paper the like waste all can be used as combustion material.

(as stalk, bavin standing grain, stalk compression blocks etc.) the 2 kilograms of sustainable burnings that at every turn feed intake were finished meal about 1 hour, also can then heat up water.Through repetition test, boiled water flask ratio with volume used liquefied gas cooker short 2-3 minute.

Claims

1. stalk direct combustion gasification furnace, comprise body of heater, flue and storage tank or heating system, upper of furnace body has bell (1), inside is provided with flue (2), and the bottom is provided with fire grate (3), and body of heater is provided with water inlet (10), delivery port (11), it is characterized in that: described flue (2) is made of inside and outside wall, whole is toroidal cavity (5) between the inside and outside wall for taper, and top is provided with secondary combustion chamber (6); Fire grate (3) bottom is provided with ash accepting box (4); Water pipe (8) is arranged in the flue (7), toroidal cavity (9) is arranged outward, water pipe (8), toroidal cavity (9) communicate with the toroidal cavity (5) of flue (2).

2. stalk direct combustion gasification furnace according to claim 1 is characterized in that: secondary combustion chamber (6) top is for circular, and the bottom is a tubular, and air inlet is circumferentially arranged.

3. stalk direct combustion gasification furnace according to claim 1 is characterized in that: water inlet (10) is located at the bottom of flue (2), and delivery port (11) passes with storage tank or heating system from flue (7) and is connected.