CN2924331Y

CN2924331Y - Biomass gas stalk gasifying stove

Info

Publication number: CN2924331Y
Application number: CN 200620051365
Authority: CN
Inventors: 田作夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-16
Filing date: 2006-06-16
Publication date: 2007-07-18
Anticipated expiration: 2016-06-16

Abstract

The utility model relates to a biological-substances gas and straw gasification-furnace. The utility model comprises a furnace-body and a fan. An anaerobic burning zone is arranged under the furnace and an air supply device is arranged at the bottom of the hearth in the anaerobic burning zone. The air supply device is a hidden air-supply device which is an inner-circle shape and has gaps, namely that a circle air-channel is arranged below the hearth outlet of the furnace and the inner circle of the circle air-channel is larger than the hearth outlet of the furnace. And the inner side wall of the circle air-channel and the bottom-face of the hearth are the structures with gaps. The gap partially or entirely used to provide air and oxygen for the anaerobic burning zone of the straw gasification-furnace is arranged on the inner side wall of the circle air-channel. An air-inlet is arranged on one side of the outer side-wall of the circle air-channel and the air-inlet is connected with the outlet of the fan. An ash-discharging vent is arranged on the other side of the outer side wall of the circle air-channel corresponding to the air-inlet, and when the ash is not to be discharged, a blocking-head or a valve used to jam the vent is arranged on the ash-discharging vent. The outer side of the circle air-channel clings to the furnace without any gap, and the inner side wall of the circle air-channel is a dust zone.

Description

A kind of biological fuel gas stalk gasifier

Technical field

The utility model belongs to a kind of combustion stove, is meant especially a kind ofly can be widely used in peasant household's type kitchen combustion furnace that use in the rural area, is mainly used in the rural area cooking needs in peasant household's daily life.

Background technology

Along with the sustainable fast development of China's economy, disposable resource supply and demand breach such as oil, natural gas, coal gas increase year by year, and people press for a kind of low price, energy-conservation, safe, clean New-type fuel comes into the market.New forms of energy are all actively being sought always by national departments concerned and R﹠D institution.The comprehensive utilization of straw resource is a special kind of skill of rising in recent years.At present, China can utilize about 700,000,000 tons of stalk every year, but its effective rate of utilization less than 50%, remainder is set fire to burning mostly commits to the flames.This has not only brought great pollution to environment, more it's a pity and has wasted valuable plant resources.How to convert low-calorie stalk resource to efficient, clean biological fuel gas, bring benefit to the people, be the vast rural area of China peasant household urgent wish the problem that solves.For this reason, many R﹠D institutions are all in the burning problem of solution stalk of making a decision, and the focus development project that stalk comprehensive utilization becoming country actively supports is enjoyed national multinomial support on policy and preferential tax revenue.The scientific research personnel finds that stalk can produce fuel gas under uniform temperature and secluding air condition, therefore developed a kind of straw gasification stove, the temperature of stalk gasifier obtains by lighting stalk self burning, but can not fully burn, that is to say that this stove is to produce fuel gas by imperfect combustion (being the anaerobism burning).The deficiency of succeeding in developing the life fuel that has solved vast rural area of stalk gasifier has been eliminated original rural area again and has been burned the straw produced pollution, and raw material sources are very abundant, become a kind of inexhaustible bio-energy resource.But the present straw gasification stove that develops remains in certain deficiency, mainly be that structure at the bottom of burner hearth air inlet is not quite reasonable, it all is the bottom of wind being sent into burner hearth by a central air hose, directly upwards blow by one or more tuyere tubes again from the bottom, this air-supply structure is found in actual use, be easy to stop up, and cause the anaerobism incomplete combustion, the combustible gas flow that is produced is fewer and feweri.And in the air-supply structure of existing bottom, lacking necessary ash exhauster, this has also greatly influenced the generation of fuel gas in the anaerobism burning, therefore necessary this is improved.

Summary of the invention

It is better that this practical purpose is that the deficiency at existing straw gasification stove proposes a kind of anaerobism combustion efficiency, and the bottom air outlet is difficult for stopping up, and the novel straw gasification furnace with ash discharge function.

Anaerobism combustion efficiency by discovery straw gasification stove in the practice mainly is to depend on to choose suitable air output.Straw gasification stove will guarantee that not only fire does not go out in the stove, simultaneously also to guarantee to produce naked light, this just need provide suitable oxygen supply condition, and the oxygen supply of anaerobism combustion zone mainly is that air-supply is supplied with by blower fan in the straw gasification stove, therefore provides reliable wind oxygen to become the key that improves straw gasification stove anaerobism combustion efficiency.According to implementer's case that the purpose of this utility model proposed be: a kind of straw gasification stove, comprise body of heater, blower fan, and the body of heater bottom is the anaerobism combustion zone, burner hearth bottom is provided with the air-supply apparatus of oxygen supply in the anaerobism combustion zone, it is characterized in that: described air-supply apparatus of oxygen supply is the hidden air-supply arrangement of interior annular gap type.The hidden air-supply arrangement of annular gap type is that an annular passage is set under the furnace outlet of body of heater in described, the annular passage madial wall is greater than the outlet of burner hearth of the furnace body, and the bottom surface of annular passage madial wall and burner hearth of the furnace body is for there being the clearance type structure, at the annular passage madial wall slit that partly or entirely is used for anaerobism combustion zone air-supply oxygen supply in straw gasification stove is arranged, and the slit is the slit of 3-4 millimeter.Described annular passage lateral wall is equal to or less than furnace diameter, side at the annular passage lateral wall is provided with air intake vent, air intake vent links to each other with the outlet of blower fan, opposite side at the corresponding annular passage lateral wall of air intake vent, be provided with ash discharging hole, ash discharging hole is provided with plug or the valve that is used for stopping up exhaust outlet when not ash discharge; The lateral wall of annular passage and the bottom surface of body of heater are seamless fitting tightly together, form closed cavity with burner hearth.In the annular passage madial wall is the dust district, and the dust district is provided with closed ash discharging hole.

Advantage of the present utility model is:

1, aerogenesis is stable.The utility model adopts the annular air supply mode of hidden, can be stable wind oxygen is provided, can not occur stopping up because of the air port, cause the phenomenon of air feed deficiency, so, just can guarantee normal air feed as long as guarantee that the anaerobism comburant is abundant in the body of heater;

2, sufficient combustion, the utilization efficiency of heat energy height.The utility model is owing to can guarantee suitable wind supply quantity, so the anaerobism burning is very abundant, the energy-saving gas cooker energy-saving effect is better than the gas-cooker of existing any spontaneous firing, fractional energy savings 3%～30% (deciding on new and old kitchen range) after tested

3, simple in structure, cost is low.Kitchen range is just done improvement slightly with material on the basis of existing kitchen range commonly used, the bottom air-supply arrangement is changed just passable, and structure is very simple, makes easily, changes also very convenient.

4, long service life is 3～5 times of existing commonly used gas kitchen ranges service life.

Accompanying drawing and explanation

Fig. 1 is the structural representation of an embodiment integral body of the utility model;

Fig. 2 is the bottom air-supply arrangement structural representation of an embodiment of the utility model.

Among the figure:

1, body of heater 2, blower fan 3, annular passage

4, dust district 5, air intake vent 6, ash discharging hole

7, burner hearth lid 8, steam line 9, gas kitchen ranges

10, the bottom surface of annular passage lateral wall 11, annular passage madial wall 12, body of heater

13, annular inferior pyramidal clinohedral 14, plug or valve 15, anaerobism combustion zone

16, the outlet of air-supply apparatus of oxygen supply 17, burner hearth

The specific embodiment

The utility model will be further described below in conjunction with drawings and Examples.

Embodiment one

Accompanying drawing 1 has provided an embodiment of the present utility model, can see that from accompanying drawing 1 this straw gasification stove comprises body of heater 1, blower fan 2, and body of heater 1 bottom is anaerobism combustion zone 15, be provided with air-supply apparatus of oxygen supply 16 at anaerobism combustion zone 15 burner hearth bottoms, it is characterized in that: described air-supply apparatus of oxygen supply 16 is the hidden air-supply arrangements of interior annular gap type.The hidden air-supply arrangement of annular gap type is that an annular passage 3 is set under the furnace outlet of body of heater in described, annular passage madial wall 11 is greater than the outlet 17 of burner hearth of the furnace body, and the bottom surface 12 of annular passage madial wall 10 and burner hearth of the furnace body is for there being the clearance type structure, at annular passage madial wall 11 slit that partly or entirely is used for anaerobism combustion zone air-supply oxygen supply in straw gasification stove is arranged, and the slit is the slit of 3-4 millimeter.Described annular passage lateral wall 10 is equal to or less than furnace diameter, side at annular passage lateral wall 10 is provided with air intake vent 5, air intake vent 5 links to each other with the outlet of blower fan 2, opposite side at air intake vent 5 corresponding annular passage lateral walls 10 is provided with ash discharging hole 6, and ash discharging hole 6 is provided with plug or the valve 14 that is used for stopping up exhaust outlet when not ash discharge; Annular passage lateral wall 10 is seamless fitting tightly together with the bottom surface 12 of body of heater, forms closed cavity with burner hearth.In the annular passage madial wall 11 is dust district 4, and dust district 4 is provided with closed ash discharging hole.For the stalk thing in the burner hearth is fully burnt, for the inclined-plane structure, be the annular inferior pyramidal clinohedral made from steel plate or refractory material 13 in the bottom of burner hearth, the outlet of lower pyramid mouth and burner hearth is joined.

The novel operation principle of this use is: earlier burner hearth lid 7 is opened, the stalk thing is filled it up with burner hearth, the stalk thing produces fuel gas by the anaerobism burning, delivers to gas kitchen ranges 9 burnings by steam line 8 again.The anaerobism burning of stalk thing is supplied with by the annular passage 3 of air-supply apparatus of oxygen supply 16, because annular passage 3 is the hidden air-supply arrangement of interior annular gap type, annular passage madial wall 11 is greater than the outlet 17 of burner hearth of the furnace body, so the stalk thing dust that is difficult for being fallen down by the outlet of burner hearth stops up, so can guarantee the stable supplying of air output, therefore improve factor of created gase.

Claims

1, a kind of biological fuel gas stalk gasifier comprises body of heater, blower fan, and the body of heater bottom is the anaerobism combustion zone, and burner hearth bottom is provided with the air-supply apparatus of oxygen supply in the anaerobism combustion zone, it is characterized in that: described air-supply apparatus of oxygen supply is the hidden air-supply arrangement of interior annular gap type.

2, a kind of biological fuel gas stalk gasifier as claimed in claim 1, it is characterized in that: the hidden air-supply arrangement of annular gap type is that an annular passage is set under the furnace outlet of body of heater in described, the interior ring in air channel is greater than the outlet of burner hearth of the furnace body, and the madial wall of annular passage and the bottom surface of burner hearth of the furnace body be for there being the clearance type structure, at the madial wall of annular passage the slit that partly or entirely is used for anaerobism combustion zone air-supply oxygen supply in straw gasification stove arranged.

3, a kind of biological fuel gas stalk gasifier as claimed in claim 1 or 2 is characterized in that: it is the slit of 3-4 millimeter that the madial wall of described annular passage has the slit that partly or entirely is used for anaerobism combustion zone air-supply oxygen supply in straw gasification stove.

4, a kind of biological fuel gas stalk gasifier as claimed in claim 1 or 2, it is characterized in that: the outer shroud of described annular passage is equal to or less than furnace diameter, side at the annular passage outer shroud is provided with air intake vent, air intake vent links to each other with the outlet of blower fan, opposite side at the corresponding annular passage of air intake vent, be provided with ash discharging hole, ash discharging hole is provided with plug or the valve that is used for stopping up exhaust outlet when not ash discharge, the lateral wall of annular passage and body of heater are seamless fitting tightly together, with the bottom surface formation closed cavity of burner hearth.

5, a kind of biological fuel gas stalk gasifier as claimed in claim 1 or 2 is characterized in that: be the dust district in the madial wall of described annular passage, the dust district is provided with closed ash discharging hole.

6, a kind of biological fuel gas stalk gasifier as claimed in claim 1 or 2 is characterized in that: the bottom of burner hearth is the inclined-plane structure, is the annular inferior pyramidal clinohedral made from steel plate or refractory material, and the outlet of lower pyramid mouth and burner hearth is joined.