CN201358232Y

CN201358232Y - Biomass gasifier

Info

Publication number: CN201358232Y
Application number: CNU2009201057035U
Authority: CN
Inventors: 刘宏伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-02
Filing date: 2009-03-02
Publication date: 2009-12-09
Anticipated expiration: 2019-03-02

Abstract

The utility model relates to a biomass gasifier which belongs to environmental protection and energy saving field. The biomass gasifier comprises a gasifier body and a gasifier cover, wherein the upper end of the gasifier body is provided with an opening, the upper part of the lateral wall of the gasifier body is connected with a gas outlet pipe, the lower part of the lateral wall of the gasifier body is provided with an ash outlet; the biomass gasifier is characterized in that the opening edge on the upper end of the gasifier body is a circle of concave water trough, the cover edge of the gasifier cover is buckled in the water trough, a closed door is arranged on the exterior of the ash outlet. The biomass gasifier can efficiently convert and break down biomass into inflammable gas, is safe in operation and has simple structure and low manufacturing cost, and is widely applicable to rural households.

Description

Biomass gasifying furnace

Technical field

The utility model relates to the environmental protection and energy saving field, particularly relates to a kind of biomass gasifying furnace.

Background technology

Along with Nonrenewable energy resources such as coal, oil are more and more in short supply, so price is more and more expensive, and new replacement energy substance is also being sought in the recover petroleum coal equal energy source material energetically one after another by each country of the whole world.For China rural area, because development degree is short of relatively, natural gas line is difficult to spread all over, and price is more expensive, thereby generally adopt coal, timber is as domestic energy, but coal, the sulfide that timber produces in combustion processes, nitride dust impurity environmental pollution is very serious, and the very big wasting of resources has been caused in insufficient utilization ratio polar region of coal and timber that makes of burning, therefore be badly in need of seeking a kind of novel substitute energy, advocate the use biomass energy now one after another, plant relies on photosynthesis to grow continuously, the waste straw of its generation, if parts such as root stubble can be fully utilized, to significantly reduce the dependence of people for Nonrenewable resources, for the rural area, lowered life cost greatly, China is large agricultural country, the biological straw that produces in the annual agricultural production process is not used well, people studies have shown that straw burns and can resolve into inflammable gas under oxygen free condition in recent years, comprise methane, hydrogen, carbon monoxide, these burning of gas products mainly are water and carbonic acid gas, substantially there is not the gas of contaminate environment to produce, therefore how biological material being changed into inflammable gas expeditiously is the bottleneck that utilizes biomass energy at present, more existing biomass gasifying furnace principle of work all are combustion decomposition biological materials under anoxia condition, gained gas is exported by pipeline, and communicate with gas-cooker, though vapourizing furnace can reach the purpose of utilizing biological scrap feed material, but in use because the required anoxia condition of gasifying biomass is difficult to hold, oxygen gives too much to cause aerobic burning ratio excessive, the oxygen deficiency, the biomass decomposition gasification not exclusively, gasifying biomass efficient is difficult to improve in a word, and equipment for gasification poor sealing, cause using drawbacks such as gaseous combustion dangerous and that obtain is incomplete, though some equipment can address these problems, but design is complicated, make the manufacturing cost of equipment higher, for underdeveloped relatively rural households, be difficult to be affordable.

The utility model content

The problem that the utility model exists at present gasifying biomass equipment, a kind of biomass gasifying furnace is provided, biomass energy is transformed expeditiously resolve into inflammable gas, use safety, simple in equipment, low cost of manufacture is fit to vast rural households and uses.

Biomass gasifying furnace, comprise shaft, bell, described shaft upper end open, the shaft side wall upper part is connected with the combustion gas output tube, the shaft lower sidewall has ash output hole, it is characterized in that the shaft upper end open along being the recessed tank of a circle, the lid of bell is along being fastened in the tank, and described ash output hole is provided with sealed door outward.

Described combustion gas output tube is connected with a cleaner by a Y-junction.

Be connected with control valve between described combustion gas output tube and the cleaner.

The also airtight inlet pipe that is connected with of described shaft lower sidewall or low side, described inlet pipe is communicated with blower fan, is equipped with the air intake control valve between inlet pipe and the blower fan.

Described cleaner can also be connected with blower fan.

Described shaft comprises internal layer flue and outer furnace wall.

Interlayer is an enclosed space between described internal layer flue and the outer furnace wall, is connected with water inlet pipe and water shoot on the outer furnace wall.

Described internal layer flue is covered with flame retardant coating.

The biomass gasifying furnace that the utility model provides, comprise shaft, bell, described shaft upper end open, the shaft side wall upper part is connected with the combustion gas output tube, the shaft lower sidewall has ash output hole, it is characterized in that the shaft upper end open is the recessed tank of a circle, the bell lid is along being fastened in the tank, and described ash output hole is provided with sealed door outward.Furnace body structure is simple, good airproof performance, particularly by the upper end open edge being designed to the recessed tank of a circle, the bell lid is along being fastened in the tank, add the effect of playing gas-tight seal behind the water, gas is only exported from the combustion gas output tube, prevent that the toxic gas effusion that vapourizing furnace produces from causing injury to the people who uses, the shaft lower sidewall is provided with ash output hole, simultaneously can also be as the inlet mouth of oxygen supply, ash output hole is outside equipped with sealed door, and the stopping property of shaft inside when guaranteeing not need oxygen in the use prevents that the aerobic burning that continues from reducing the gasification efficiency of biomass.

Vapourizing furnace of the present utility model, a Y-junction is installed in combustion gas output tube exit, and then Y-junction wherein an end connect a cleaner, the ashes that produce in the biomass gasification process, materials such as tar and solubility toxic gas are stayed in the scavenging agent of cleaner after handling through cleaner, make the gas that obtains purer, use safer, when needs use relatively cleaner gas, then use the gas behind the purification utensil, the other end of Y-junction can directly connect gas-cooker or gas-holder, directly uses without the gas that purifies.

Be equipped with control valve between Y-junction and cleaner, when needing Purge gas, opening controlling valve gas just can enter in the cleaner.

The utility model also is provided with the inlet pipe of airtight connection in shaft lower sidewall or bottom, inlet pipe is communicated with blower fan, is equipped with the air intake control valve between inlet pipe and the blower fan.In the use, gasifying biomass is burning but be not to burn absolute oxygen free condition under under the anoxia condition, just reduce aerobic incendiary ratio as far as possible, so need certain amount of oxygen startup and maintain burning, when finding that gasification efficiency is too low or not producing gas, use blower fan to be easier to control air output than ventilating for the shaft inner ventilation by ash output hole, be unlikely to overdraft cause the aerobic burning excessively or deficiency in draught cause biomass combustion to decompose not exclusively.

Described cleaner can also be connected with blower fan, can the shared blower fan that is connected with shaft, drop into saving equipment, and the wind-force accelerating gas by blower fan purifies, and the perfect combustion of catalytic gas, avoids burning to cause waste not to the utmost.

The shaft of biomass gasifying furnace of the present utility model is preferably designed to two-layer, and internal layer is a flue, and skin is the furnace wall, and the interlayer between two-layer is preferably enclosed space, is connected with water inlet pipe on top, outer furnace wall, and water shoot is arranged at the bottom.Interlayer plays heat insulation effect, prevents that outer furnace wall temperature is too high, in order to make full use of the heat that producer produces, feeds cold water in interlayer, and cold water can be heated in the use, can be used for domestic water after the discharge.

The internal layer inboard wall of furnace of biomass gasifying furnace of the present utility model can be pasted one deck refractory materials over, increases the work-ing life of producer.

The biomass gasifying furnace that the utility model provides, as improvements over the prior art, on stopping property, biomass utilization ratio and the safety in utilization of shaft, be significantly improved, and this improvement does not increase the structural complexity and the manufacturing cost of vapourizing furnace, the purchasing power present situation that is fit to China rural area, suitable applying.

Description of drawings

Fig. 1 the utility model biomass gasifying furnace schematic perspective view

Fig. 2 the utility model biomass gasifying furnace connects the synoptic diagram of cleaner

1-shaft wherein, 1A-internal layer flue, the outer furnace wall of 1B-, the 2-bell, 2A-covers the edge, 3-combustion gas output tube, 3A-Y-junction, 3B-control valve, 4-ash output hole, 5-tank, 6-cleaner 7-inlet pipe, 7A-air intake control valve, 8-blower fan 9-water-in, 10-water port, 11-gas-cooker.

Embodiment

As shown in Figure 1 and Figure 2, the biomass gasifying furnace that the utility model provides, comprise shaft 1, bell 2, described shaft 1 upper end open, shaft 1 side wall upper part is connected with combustion gas output tube 3, and shaft 1 lower sidewall has ash output hole 4, it is characterized in that: the shaft upper end open is along being the recessed tank 5 of a circle, the lid of bell 2 is fastened in the tank 5 along 2A, the described ash output hole 4 outer sealed doors that are provided with.The upper end open edge is designed to the recessed tank 5 of a circle, bell 2 is fastened in the tank 5, add the effect of playing gas-tight seal behind the water in the tank, make gas only from 3 outputs of combustion gas output tube, prevent that the toxic gas effusion that vapourizing furnace produces from causing injury to the people who uses, the ash output hole 4 that shaft 1 lower sidewall is provided with, simultaneously can also be as the inlet mouth of oxygen supply, ash output hole 4 is outside equipped with sealed door, the stopping property of shaft 1 inside when guaranteeing not need oxygen in the use prevents the gasification efficiency that lasting aerobic burning reduces biomass.

Vapourizing furnace of the present utility model, a Y-junction 3A is installed in combustion gas output tube 3 exits, and then Y-junction 3A wherein an end connect a cleaner 6, the ashes that produce in the biomass gasification process, materials such as tar and solubility toxic gas are stayed in the scavenging agent after handling through cleaner 6, make the gas that obtains purer, use safer, when needs use relatively cleaner gas, then use cleaner 6 purified gases, the other end of Y-junction 3A can directly connect gas-cooker 11 or gas-holder, directly uses without the gas that purifies.

Be equipped with control valve 3B between Y-junction 3A and cleaner 6, when needing Purge gas, opening controlling valve 3B, gas just can enter in the cleaner 6.

The utility model also is provided with the inlet pipe 7 of airtight connection in shaft 1 lower sidewall or bottom, inlet pipe 7 is communicated with blower fan 8, is equipped with air intake control valve 7A between inlet pipe 7 and the blower fan 8.In the use, when finding that gasification efficiency is too low or not producing gas, use blower fan 8 to be easier to control air output than ventilating for shaft 1 inner ventilation by ash output hole 4.

Described cleaner 6 can also be connected with blower fan, can the shared blower fan 8 that is connected with shaft 1, and saving equipment cost, the wind-force accelerating gas by blower fan 8 purifies, and the perfect combustion of catalytic gas, avoids burning to cause waste not to the utmost.

The shaft 1 of biomass gasifying furnace of the present utility model is preferably designed to two-layer, and internal layer is flue 1A, and skin is furnace wall 1B, and the interlayer between two-layer is preferably enclosed space, is connected with water inlet pipe 9 on 1B top, outer furnace wall, and water shoot 10 is arranged at the bottom.Interlayer plays heat insulation effect, prevents that furnace wall 1B temperature is too high.In order to make full use of the heat that producer produces, in interlayer, feed cold water by being installed into water pipe 9, cold water can be heated in the use, can be used for domestic water after discharging by water shoot 10.

The inwall of described internal layer flue 1A can be pasted one deck refractory materials over, refractory cements, the work-ing life of increase producer.

Claims

1. biomass gasifying furnace, comprise shaft, bell, described shaft upper end open, the shaft side wall upper part is connected with the combustion gas output tube, the shaft lower sidewall has ash output hole, it is characterized in that: the shaft upper end open is along being the recessed tank of a circle, and the lid of bell is along being fastened in the tank, and described ash output hole is provided with sealed door outward.

2. biomass gasifying furnace according to claim 1 is characterized in that: described combustion gas output tube is connected with a cleaner by a Y-junction.

3. biomass gasifying furnace according to claim 2 is characterized in that: be connected with control valve between described combustion gas output tube and the cleaner.

4. biomass gasifying furnace according to claim 1 is characterized in that: the also airtight inlet pipe that is connected with of described shaft lower sidewall or low side, described inlet pipe is communicated with blower fan, is equipped with the air intake control valve between inlet pipe and the blower fan.

5. biomass gasifying furnace according to claim 2 is characterized in that: described cleaner also is connected with blower fan.

6. biomass gasifying furnace according to claim 1 is characterized in that: described shaft comprises internal layer flue and outer furnace wall.

7. biomass gasifying furnace according to claim 6 is characterized in that: interlayer is an enclosed space between described internal layer flue and the outer furnace wall, is connected with water inlet pipe and water shoot on the outer furnace wall.

8. biomass gasifying furnace according to claim 6 is characterized in that: described internal layer flue is covered with flame retardant coating.