CN203629009U - Normal pressure hot water boiler for half-gasification of biomass - Google Patents

Normal pressure hot water boiler for half-gasification of biomass Download PDF

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Publication number
CN203629009U
CN203629009U CN201320832170.7U CN201320832170U CN203629009U CN 203629009 U CN203629009 U CN 203629009U CN 201320832170 U CN201320832170 U CN 201320832170U CN 203629009 U CN203629009 U CN 203629009U
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China
Prior art keywords
combustion chamber
air
water
vaporizer
pressure hot
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Expired - Fee Related
Application number
CN201320832170.7U
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Chinese (zh)
Inventor
伍斌强
郭聪颖
李和平
刘建军
冯暑斌
伍奕
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HUBEI XUNDA SCIENCE AND TECHNOLOGY Co Ltd XUNDA GROUP
Xunda Technology Group Co Ltd
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HUBEI XUNDA SCIENCE AND TECHNOLOGY Co Ltd XUNDA GROUP
Xunda Technology Group Co Ltd
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Priority to CN201320832170.7U priority Critical patent/CN203629009U/en
Application granted granted Critical
Publication of CN203629009U publication Critical patent/CN203629009U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a normal pressure hot water boiler for half-gasification of biomass. The boiler comprises a combustion chamber, air inlet cavities and a water jacket and is characterized by further comprising a half-gasification chamber, and the half-gasification chamber is located above the combustion chamber and communicated with the combustion chamber through a spraying nozzle; the primary air inlet cavity is communicated with the half-gasification chamber through a primary air hole, the second air inlet cavity is communicated with the combustion chamber through a secondary air hole, the half-gasification chamber and the combustion chamber are surrounded by the water jacket, and the combustion chamber is connected with a smoke channel through a smoke exhaust hole of the combustion chamber. The normal pressure hot water boiler for half-gasification of biomass has the advantages of being high in heat efficiency, low in smoke exhaust temperature, stable in running, high in adaptability to loads, low in smoke exhaust, free of tar pollution, wide in fuel adaptability and the like.

Description

Biomass semi-gasification burning normal-pressure hot-water boiler
Technical field
The utility model belongs to biomass fuel hot-water boiler technical field, particularly a kind of efficient biomass half gasification, and combustion normal-pressure hot-water boiler.
Background technology
China is being faced with the environmental problem that energy supply is nervous and use primary energy to bring, and the task of energy-saving and emission-reduction, exploitation regenerative resource is day by day arduous.Along with a large amount of consumption of fossil fuel, energy shortage will become the key factor that hinders the sustainable high speed development of China's economy and environment, and therefore, exploitation biomass energy, reduces the dependence to fossil fuel, is the important energy strategy of China.
Existing biomass boiler is in direct combustion mode as main, and structure is mainly improved by traditional cooking stove and coal-burning boiler.This type of boiler is not strong to the combustion characteristics specific aim of biomass fuel, has the technical problems such as burning is insufficient, efficiency of combustion is low, alkali metal burn into fouling of heating surface is serious, smoke content is high, flue gas exceeds standard.
Current domestic biomass gasification boiler, can improve the efficiency of combustion of biomass fuel to a certain extent.But because stove fuel in gasification easily causes slagging scorification because of high temperature, produce the problems such as tar, and along with combustion gas stroke is longer, the tar deposition in passage is more, larger to corrosive pipeline, affect service life of product.
Summary of the invention
The utility model provides a kind of biomass semi-gasification burning normal-pressure hot-water boiler, for biomass fuel combustion characteristic, combines advantage biomass direct-fired and gasification, efficiently solves the above-mentioned technical problem that existing biomass boiler exists.Adopt the biomass boiler of this process structure design have that the thermal efficiency is high, exhaust gas temperature is low, stable, workload-adaptability is strong, fume emission is low, without features such as tar pollution, fuel tolerance are wide.
For achieving the above object, the utility model is taked following technical scheme:
A kind of biomass semi-gasification burning normal-pressure hot-water boiler, comprises combustion chamber, air-inlet cavity and water jacket, characterized by further comprising half vaporizer, half vaporizer is positioned at top, combustion chamber, half vaporizer is communicated with by nozzle with combustion chamber, and half vaporizer has feeding gate, and combustion chamber has shoot door; Described air-inlet cavity is divided into air-inlet cavity and secondary air chamber, one time air-inlet cavity is communicated with half vaporizer by a wind hole, secondary air chamber is communicated with combustion chamber by secondary air hole, and described water jacket is round half vaporizer and combustion chamber, and water jacket upper and lower is separately installed with outlet pipe and water inlet pipe; Combustion chamber connects exhaust gases passes by combustion chamber smoke hole.
The utility model can also further be implemented by following technical solution.
Half vaporizer exhaust smoke hole is arranged at described half vaporizer top, has the open and close valve adapting that carries out opening and closing operations by leverage on half vaporizer exhaust smoke hole.
Described secondary air hole is communicated with combustion chamber by nozzle.
Outside described combustion chamber, have smoke chamber, described smoke chamber front end is communicated with combustion chamber, and rear end connects combustion chamber smoke hole.
Described exhaust gases passes is the rectangular body cavity of five face closures, and top and rear portion backboard have ash removing opening.
The air inlet in a described air-inlet cavity and secondary air chamber goes out respectively once air inlet adjustment plate and secondary air adjustable plate.
Biomass semi-gasification burning normal-pressure hot-water boiler of the present utility model, characterized by further comprising a total air-inlet cavity, there is fender plate at the air inlet place of total air-inlet cavity, and described total air-inlet cavity is arranged in exhaust gases passes, is communicated with respectively air-inlet cavity and secondary air chamber.
Water tank is also housed in described exhaust gases passes, and described water tank is the five face closure cuboids that connect water jacket.
The flue gas overcurrent heat exchanger tube that described water tank belt is vertically placed, places spirality flow spoiler in heat exchanger tube.
Described water jacket inner top is penetrated with a cooling water pipe, and described pipe inlet connects running water, and pipe outlet place is connected with temperature detect switch (TDS), can open and close according to the temperature signal of boiler water outlet.
A kind of efficient biomass half gasification, and combustion normal-pressure hot-water boiler of the utility model has sufficient combustion, air distribution is reasonable, heat exchange is reasonable, without features such as tar pollutions, efficiency of combustion is high, boiler heat exchange efficiency is high, exhaust gas temperature is low, flue dust is few, flue gas meets environmental requirement, and boiler power can be configured as required.
Accompanying drawing explanation
Fig. 1 is the structural representation of biomass semi-gasification burning normal-pressure hot-water boiler of the present utility model.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is that the C of Fig. 1 is to view.
Description of reference numerals:
1-half vaporizer, 2-combustion chamber, 3-nozzle, 4-water jacket, 5-ash removing opening, 6-exhaust gases passes, 7-air-introduced machine, fresh air inlet of 8-, 9-half vaporizer exhaust smoke hole, 10-chimney interface, 11-open and close valve, 12-secondary air inlet, 13-secondary intake opening, 14-smoke chamber, 15-combustion chamber smoke hole, air-inlet cavity of 16-, 17-feeding gate, 18-shoot door, 19-secondary air chamber, 20-water inlet pipe, 21-water tank, air inlet of 22-, 23-outlet pipe, 24-sewage draining exit, 25-cooling water pipe, air-inlet cavity connection chamber of 26-, the total air inlet of 27-, 28-temperature control regulator, 29-controllable register, air inlet adjustment plate of 30-, 31-secondary air adjustable plate.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model content is described further.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of biomass semi-gasification burning of the utility model normal-pressure hot-water boiler is made up of half vaporizer 1, combustion chamber 2, water jacket 4, cooling system, air inlet system and flue gas heat-exchange unit.Half vaporizer 1 Lower Half is placed refractory brick, sidewall and side lower part refractory brick have wind fresh air inlet 8 one time, refractory brick nozzle 3 is placed in half vaporizer 1 bottom, half vaporizer 1 communicates with combustion chamber 2 by bottom nozzle 3, the half vaporizer exhaust smoke hole 9 by backboard top is directly connected with chimney interface 10, has the open and close valve adapting 11 that carries out opening and closing operations by leverage on half vaporizer exhaust smoke hole 9.Nozzle 3 upper stratas have certain thickness red carbon-coating 12, biomass fuel is through high-temperature gasification, gasification product is under draft effect, during by nozzle 3, lighted by red carbon-coating 12, on nozzle 3, there is the secondary air hole 13 of vertical body of heater direction offset, make sufficient combustion, flame is encountered after 2 bottom refractory bricks of combustion chamber, the interior generation flow-disturbing in combustion chamber 2, flue gas flows to afterbody from combustion chamber 2 front ends via the smoke chamber 14 of sidewall, passes into exhaust gases passes 6 through combustion chamber smoke hole 15, through air-introduced machine 7 draft effects, discharge from chimney interface 10.Half vaporizer 1 outside is top down followed successively by top water jacket layer, wind chamber 16, side water jacket layer, and 2 outsides, combustion chamber are water jacket layer.On boiler front console, between feeding gate 17 and combustion chamber shoot door 18, there is water jacket layer, communicate with furnace water jacket layer by the perforate on panel.Boiler body backboard nozzle 3 horizontal levels are opened secondary intake opening 13, are communicated with nozzle 3 and secondary air chamber 19.Body of heater backboard rear portion welding backboard water jacket layer, increases heat-absorbent surface.Backboard water jacket layer afterbody has exhaust gases passes 6, in exhaust gases passes 6, there is the water tank 21 that carries out flue gas heat exchange, flue gas passes through from water tank 21 peripheries and water tank internal heat exchange tubes, exhaust gases passes 6 afterbody intermediate hanging air-introduced machine 7 and chimney interfaces 10, and heat-insulation layer is placed at all the other positions.
Described half vaporizer 1 is polygonized structure (or columnar structured), upper lateral part is wind hole 8 once, and middle part has mounting hole, and air-inlet cavity 16 of these Kong Junyu communicates, lower wall is placed refractory brick, on refractory brick, have a circular wind hole 8, primary air is introduced to internal cavities, bottom is to place the prefabricated nozzle 3 of refractory brick, internal cavities is biomass fuel rest area, fuel tolerance is wide, can be bulk, bar-shaped, can use log directly to burn.Half vaporizer 1 front end is charging aperture, back is water jacket 4, back has a hole up and down, upper hole is half vaporizer exhaust smoke hole 9, directly communicates with exhaust gases passes top, in the time that open and close valve 11 is opened, flue gas directly drains into exhaust gases passes 6 tops from this hole, directly discharge in stove via air-introduced machine 7, in the time that open and close valve 11 is closed, the gasification product of generation enters combustion chamber 2 via nozzle 3.Backboard bottom hole is auxiliary air air inlet 13, connecting secondary air chamber (19) and the interior secondary air of exhaust gases passes chamber 19.
Described nozzle 3 is refractory brick prefabricated component, in the middle of body of heater length direction, has bar shaped square hole, passes through for gasification product, has the secondary intake opening 13 staggering on square hole length direction sidewall, and nozzle 3 Lower Halves form secondary air chamber 19 with the locular wall that partly gasifies.
Described water jacket 4 is for surrounding furnace water jacket, front panel water jacket, backboard water jacket and the water tank 21 of half vaporizer 1, combustion chamber 2, and these water jackets, for being interconnected structure, are the circulating area of boiler WATER AS FLOW MEDIUM.Water jacket water inlet pipe 20 and outlet pipe 23 are opened respectively on backboard water jacket bottom and backboard water jacket top, and backboard water jacket below has sewage draining exit 24.
Described cooling system is the cooling water pipe 25 that runs through a coil arrangement in half vaporizer 1 top water jacket, import is communicated with running water, and outlet is by temperature detect switch (TDS) control, in the time that the interior water of cooling water pipe 25 is warmed to temperature alarm by top water jacket, temperature detect switch (TDS) is opened automatically, completes cooling effect.
Described air inlet system is made up of air inlet system and secondary air system.One time air inlet system is made up of air inlet 22, one time, left and right air-inlet cavity 16, half vaporizer sidewall fresh air inlet and one time, a left and right air-inlet cavity connection chamber 26.Secondary air system is made up of the secondary intake opening 13 on secondary air inlet 12, secondary air chamber 19 and nozzle 3.Air inlet system and total air inlet 27 of secondary air system share, air enters from total air inlet 27, in total air-inlet cavity, be subject to the preheating of flue gas, enter respectively air-inlet cavity and secondary air chamber, the air inlet in air-inlet cavity and secondary air chamber goes out respectively once air inlet adjustment plate 30 and secondary air adjustable plate 31, can regulate intake by pull bar, regulate the aperture of adjustable plate according to different fuel.Total air inlet 27 arranges fender plate 29, by automatic controllable register 29 apertures of temperature control regulator 28, controls total intake according to boiler leaving water temperature.
Described exhaust gases passes 6 is the rectangular body cavity of five face closures, and top and rear portion backboard have ash removing opening 5, and water tank 21 and secondary air chamber 19 are placed in inside, and has the open and close valve 11 of half vaporizer 1 backboard top half vaporizer exhaust smoke hole 9.
Described water tank 21 is the heat-exchanger rig of five face closure cuboids, the flue gas overcurrent heat exchanger tube that band is vertically placed, in heat exchanger tube, place spirality flow spoiler, water tank opening one side and backboard water jacket wall welded seal, connect as one water jacket by the perforate in backboard water jacket wall.Three of water tank short transverses all have certain distance with flue gas heat exchange passage, can pass through for flue gas.
A kind of biomass semi-gasification burning normal-pressure hot-water boiler of the present utility model, whole use procedure can be divided into three states: fired state, running status, cleaning state.
Before use, need in whole furnace water jacket, to be all full of water.
Fired state: top feeding gate 17, bottom shoot door 18 are opened, opened air-introduced machine 7, pull open front panel pull bar the open and close valve of half vaporizer exhaust smoke hole 9 11 is opened, now air-flow will directly directly be discharged from this exhanst gas outlet.Do fire-lighter with the thing such as the scraps of paper or wood shavings, be placed on nozzle 3 and light, cover kindling thereon, the size of kindling strengthens gradually from bottom to up, close feeding gate 17, now biomass fuel is direct combustion mode, one time wind hole 8 changes with secondary air hole 13 functions, the wind that now discharge in wind hole 8 is as Secondary Air, the wind that the wind that secondary air hole 13 is discharged and combustion chamber 2 enter is as a wind, now kindling is lighted rapidly and to normal combustion, open feeding gate 17, biomass fuel is inserted in half vaporizer 1, close feeding gate 17, continue to adopt direct combustion mode can expand the intensity of a fire of half vaporizer interior 1, in the time that there is certain red carbon-coating nozzle 3 tops, fired state completes.
Running status: after having lighted a fire, close shoot door 18, promote the at high temperature generating gasification of open and close valve 11, half vaporizer 1 fuels of front panel pull bar half vaporizer exhaust smoke hole 9, gasification product is under air-introduced machine 7 draft effects, during through red carbon-coating, lighted, by nozzle 3, and mixed with auxiliary air, enter combustion chamber 2, mixture runs into combustion chamber 2 bottom refractory bricks and produces convolution, mixture is mixed more abundant, has guaranteed gasification product burning completing combustion.High-temperature flue gas flows to afterbody by refractory brick and the reserved smoke chamber 14 of sidewall from front end, and carries out heat exchange with the water jacket of combustion chamber expoeridium, and the flue gas after heat exchange flows to tail flue gas passage 6 after the combustion chamber smoke hole 15 of combustor tail is converged.Enter after exhaust gases passes 6, flue gas, after water tank 21 heat exchange, is acted on down from chimney interface and being discharged by air-introduced machine 7.
In running, can regulate and cooling system assurance effluent temperature constancy by total air inlet, simultaneously can continuous operation, in the time of filling, need first open half vaporizer exhaust smoke hole open and close valve 11, allow gasification product directly discharge from this outlet, and then open feeding gate, fill after fuel, close feeding gate, half vaporizer exhaust smoke hole open and close valve 11 is closed simultaneously.
Cleaning state: in the time that ash content on refractory brick in combustion chamber reaches a certain amount of, can clear up ash content, now can not need blowing out, after half vaporizer exhaust smoke hole 9 is opened, open shoot door 18, interior combustion chamber 2 ash content is cleared up.The cleaning of exhaust gases passes, dust stratification is less, can regularly clear up from ash removing opening 5.

Claims (10)

1. a biomass semi-gasification burning normal-pressure hot-water boiler, comprises combustion chamber, air-inlet cavity and water jacket, characterized by further comprising half vaporizer, half vaporizer is positioned at top, combustion chamber, half vaporizer is communicated with by nozzle with combustion chamber, and half vaporizer has feeding gate, and combustion chamber has shoot door; Described air-inlet cavity is divided into air-inlet cavity and secondary air chamber, one time air-inlet cavity is communicated with half vaporizer by a wind hole, secondary air chamber is communicated with combustion chamber by secondary air hole, and described water jacket is round half vaporizer and combustion chamber, and water jacket upper and lower is separately installed with outlet pipe and water inlet pipe; Combustion chamber connects exhaust gases passes by combustion chamber smoke hole.
2. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that half vaporizer exhaust smoke hole is arranged at described half vaporizer top, has the open and close valve adapting that carries out opening and closing operations by leverage on half vaporizer exhaust smoke hole.
3. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that described secondary air hole is communicated with combustion chamber by nozzle.
4. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that there is smoke chamber outside described combustion chamber, and described smoke chamber front end is communicated with combustion chamber, and rear end connects combustion chamber smoke hole.
5. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that described exhaust gases passes is the rectangular body cavity of five face closures, and top and rear portion backboard have ash removing opening.
6. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that the air inlet in a described air-inlet cavity and secondary air chamber goes out respectively once air inlet adjustment plate and secondary air adjustable plate.
7. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, characterized by further comprising a total air-inlet cavity, there is fender plate at the air inlet place of total air-inlet cavity, and described total air-inlet cavity is arranged in exhaust gases passes, is communicated with respectively air-inlet cavity and secondary air chamber.
8. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, is characterized in that, in described exhaust gases passes, water tank is also housed, and described water tank is the five face closure cuboids that connect water jacket.
9. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 7, is characterized in that the flue gas overcurrent heat exchanger tube that described water tank belt is vertically placed, and places spirality flow spoiler in heat exchanger tube.
10. biomass semi-gasification burning normal-pressure hot-water boiler according to claim 1, it is characterized in that described water jacket inner top is penetrated with a cooling water pipe, described cooling water pipe entrance connects running water, exit is connected with temperature detect switch (TDS), can open and close according to the temperature signal of boiler water outlet.
CN201320832170.7U 2013-12-17 2013-12-17 Normal pressure hot water boiler for half-gasification of biomass Expired - Fee Related CN203629009U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ307820B6 (en) * 2015-05-13 2019-05-29 Ls Kamna S.R.O. Solid fuel stove with two combustion chambers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ307820B6 (en) * 2015-05-13 2019-05-29 Ls Kamna S.R.O. Solid fuel stove with two combustion chambers

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140604

Termination date: 20181217

CF01 Termination of patent right due to non-payment of annual fee