CN210856010U - Sectional reciprocating type biomass gasification burning-out bed - Google Patents

Abstract

A sectional reciprocating type biomass gasification burn-out bed relates to the field of gasification furnaces, and comprises a biomass gasification furnace body, wherein the biomass gasification furnace body comprises a feeding pyrolysis gasification furnace box body and a reinforced burn-out furnace box body arranged at the discharge end of the feeding pyrolysis gasification furnace box body, a first discharge bed for pushing fuel and ash is arranged in the feeding pyrolysis gasification furnace box body, the upper surface of a second discharge bed is lower than the upper surface of the first discharge bed, the discharge end of the first discharge bed extends to the upper part of the second discharge bed, a slag hole is arranged at the position of the discharge end of the second discharge bed corresponding to the reinforced burn-out furnace box body, and ash is discharged from the outer side of the reinforced burn-out furnace box body from the slag hole, the failure rate of the biomass gasification furnace is reduced.

Description

Sectional reciprocating type biomass gasification burning-out bed

Technical Field

The utility model belongs to the technical field of the gasifier and specifically relates to a reciprocating type living beings gasification of segmentation fires ember bed.

Background

A biomass gasification furnace: the biomass briquette is mainly prepared by compressing waste straws, wood chips, wood shavings and other agricultural and forestry wastes into biomass briquette particles as fuel, combustible gases such as carbon monoxide, hydrogen, a small amount of methane and hydrocarbons are generated through pyrolysis and gasification, and are gasified and combusted through multi-stage segmentation reasonable air distribution, so that the heat efficiency is improved, more than 20% of energy is saved compared with the traditional layer combustion mode, and smoke dust and waste generated in the pyrolysis, gasification and combustion process meet the relevant national atmospheric emission standards. Therefore, the energy is effectively saved, the waste resources are efficiently and environmentally utilized, the atmospheric CO2 balance is favorably maintained, the global greenhouse effect is reduced, and the building of an economical society is obviously promoted.

The feeding and pyrolysis gasification of the existing biomass gasification furnace are carried out in a furnace chamber. The pyrolysis gasification degree of the raw materials is low, the temperature of a combustion area in a furnace cavity is uneven, local high temperature is easily caused, most of ash generated after the biomass fuel is combusted is melted into liquid state or presents a softening state through high temperature, and if the ash still keeps the softening state and touches a heated surface, the ash is bonded on the heated surface due to cooling to form coking ash deposit in a combustor, so that the pressure and load of a boiler are reduced, the boiler is forced to be stopped for maintenance, the normal operation of production is influenced, and economic loss is caused. The local high temperature also causes the generation of thermal nitrogen oxides, and pollutes the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve current biomass gasification stove because feeding and pyrolysis gasification all go on in same way furnace chamber, the deposition that produces keeps when the softened state meets the heating surface, owing to receive the cooling and bond on the heating surface, forms the inside coking deposition of combustor, leads to boiler pressure and load to descend, is compelled to shut down the stove and overhauls, influences the normal clear of production and causes economic loss's technical defect.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a sectional reciprocating type biomass gasification burn-out bed comprises a biomass gasification furnace body, wherein the biomass gasification furnace body comprises a feeding pyrolysis gasification furnace box body and a reinforced burn-out furnace box body arranged at the discharge end of the feeding pyrolysis gasification furnace box body, a first discharge bed used for pushing fuel and ash is arranged in the feeding pyrolysis gasification furnace box body, the first discharge bed is connected with a first driving device, a second discharge bed used for receiving the fuel and the ash pushed from the discharge end of the first discharge bed is arranged in the reinforced burn-out furnace box body, the height of the upper surface of the second discharge bed is lower than that of the upper surface of the first discharge bed, the discharge end of the first discharge bed extends to the position above the second discharge bed, the fuel and the ash drop to the second discharge bed from the discharge end of the first discharge bed, and the second discharge bed is connected with a second driving device, and a slag outlet is formed in the position, corresponding to the reinforced burning-out furnace box body, of the discharge end of the second discharge bed, and ash and slag are discharged from the slag outlet to the outer side of the reinforced burning-out furnace box body.

Further, the pushing direction of the first discharging bed is consistent with the pushing direction of the second discharging bed.

Further, still include scraper blade slagging-off machine and set up the sediment fill that falls in scraper blade slagging-off machine top, feeding pyrolysis gasification furnace box and intensive burn-out furnace box set up the sediment fill top that falls, the lime-ash of discharging from the slag notch falls into the scraper blade slagging-off machine of below.

Furthermore, slag discharging windows are arranged at the bottoms of the feeding pyrolysis gasification furnace box body and the strengthening burning furnace box body, ash falling from the first discharging bed and the second discharging bed falls into a lower slag falling hopper through the slag discharging windows, and the ash falls into a scraper slag remover below from the slag falling hopper.

Furthermore, the slag falling hopper is a slag falling hopper with an inverted trapezoidal side section.

Furthermore, a flue gas return input port is arranged on the box body of the feeding pyrolysis gasification furnace.

Further, the first driving device and the second driving device are both speed reduction motors.

Furthermore, water is filled between the slag falling hopper and the scraper slag remover.

Compared with the prior art, the utility model discloses there are following beneficial effect:

the utility model provides a reciprocating type biomass gasification after-combustion bed of segmentation when using is through placing the fuel on the input end of the first discharge bed in feeding pyrolysis gasifier box, the fuel is the pyrolysis gasification of feeding pyrolysis gasifier box, drive first discharge bed work through first drive arrangement, first discharge bed promotes the fuel and transports to the output, push the biomass carbon that produces after the pyrolysis gasification to strengthen on the second discharge bed in the after-combustion furnace box, after the biomass carbon passes the oxygen boosting burning on the second discharge bed in strengthening the after-combustion furnace box, through second drive arrangement, the second discharge bed work of drive, drive the ash residue after the complete combustion to transport to the slag notch, discharge the ash residue outside strengthening the after-combustion furnace box, the utility model provides a reciprocating type biomass gasification after-combustion bed of segmentation has solved current biomass gasifier because feeding and pyrolysis gasification all go on in same way furnace chamber, when the generated accumulated ash keeps a soft state and touches a heated surface, the generated accumulated ash is bonded on the heated surface due to cooling to form coking accumulated ash in a combustor, thereby causing the pressure and load of a boiler to be reduced, and forced to stop the furnace for maintenance, thereby influencing the normal operation of production and causing economic loss.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of fig. 1.

In the figure: 1. the device comprises a first driving device, a feeding pyrolysis gasification furnace box body, a 3. reinforced burning-out furnace box body, a 4. first discharging bed, a 5. second discharging bed, a 6. slag outlet, a 7. second driving device, a 8. flue gas return input port, a 9. slag falling hopper, a 10. scraper slag remover and a 11. slag discharging window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, a sectional reciprocating type biomass gasification burn-out bed comprises a biomass gasification furnace body, the biomass gasification furnace body comprises a feeding pyrolysis gasification furnace box body 2 and a reinforced burn-out furnace box body 3 arranged at the discharge end of the feeding pyrolysis gasification furnace box body 2, a first discharge bed 4 for pushing fuel and ash is arranged in the feeding pyrolysis gasification furnace box body 2, the first discharge bed 4 is connected with a first driving device 1, a second discharge bed 5 for receiving the fuel and ash pushed from the discharge end of the first discharge bed 4 is arranged in the reinforced burn-out furnace box body 3, the height of the upper surface of the second discharge bed 5 is lower than that of the upper surface of the first discharge bed 4, the discharge end of the first discharge bed 4 extends to the upper side of the second discharge bed 5, and the fuel and ash drop from the discharge end of the first discharge bed 4 to the second discharge bed 5, the second discharging bed 5 is connected with a second driving device 7, a slag outlet 6 is arranged at the position of the discharging end of the second discharging bed 5 corresponding to the reinforced burning-out furnace box body 3, and ash slag is discharged out of the reinforced burning-out furnace box body 3 from the slag outlet 6.

The utility model provides a reciprocating type biomass gasification after-combustion bed of segmentation is when using through placing the fuel on the input of the first discharge bed 4 in feeding pyrolysis gasifier box 2, the fuel is in feeding pyrolysis gasifier box 2 pyrolysis gasification, drive the work of first discharge bed 4 through first drive arrangement, first discharge bed 4 promotes the fuel and transports to the output, push the biomass carbon that produces after pyrolysis gasification to strengthen on the second discharge bed 5 in the after-combustion furnace box 3, biomass carbon passes through the oxygen boosting burning on the second discharge bed 5 in strengthening the after-combustion furnace box 3, through second drive arrangement, 7 second discharge bed 5 that drive works, drive the ash residue after the complete combustion to transport slag notch 6, discharge the ash residue and strengthen the after-combustion furnace box 3 outside, the utility model provides a reciprocating type biomass gasification after-combustion bed of segmentation has solved current biomass gasification stove because feeding and pyrolysis gasification all go on in same way furnace chamber, when the generated accumulated ash keeps a soft state and touches a heated surface, the generated accumulated ash is bonded on the heated surface due to cooling to form coking accumulated ash in a combustor, thereby causing the technical defects of reduction of boiler pressure and load, forced shutdown for maintenance, influence on normal production and economic loss.

It should be noted that the first discharge bed 4 and the second discharge bed 5 referred to in the present embodiment are prior art, and those skilled in the art can apply them to the present embodiment by directly combining the prior art. For example, the chinese granted patent CN105737138B discloses a "combined movable material bed with automatic slag removal and multi-directional air outlet", the structure and principle of which can be directly applied to the present application, and the present application does not make creative improvements, so the present application does not explain the details thereof.

Specifically, referring to fig. 1, the pushing direction of the first discharge bed 4 is the same as the pushing direction of the second discharge bed 5.

Specifically, referring to fig. 1, the gasification furnace further comprises a scraper slag remover 10 and a slag falling hopper 9 arranged above the scraper slag remover 10, the feeding pyrolysis gasification furnace box body 2 and the enhanced combustion furnace box body 3 are arranged above the slag falling hopper 9, and ash discharged from the slag outlet 6 falls into the scraper slag remover 10 below. The slag removing machine is provided with a scraper slag remover 10 and a slag falling hopper 9, ash falls into the scraper slag remover 10 through the slag falling hopper 9, and the scraper slag remover 10 carries out unified clearing treatment on the ash.

Specifically, referring to fig. 1, slag discharging windows 11 are arranged at the bottoms of the feeding pyrolysis gasification furnace box body 2 and the reinforced burning-out furnace box body 3, ash falling from the first discharging bed 4 and the second discharging bed 5 falls into a lower slag falling hopper 9 through the slag discharging windows 11, and the ash falls into a lower scraper slag remover 10 from the slag falling hopper 9. Because the utility model discloses a first row of material bed 4 and second row of material bed 5 arrange the material subassembly by the polylith and constitute, each is arranged and is to have certain space between the material subassembly, so there is the lime-ash can drop to feeding pyrolysis gasifier box 2 and reinforce the 3 bottoms of burn-out furnace box at the propelling movement in-process, has seted up row's sediment window 11 at feeding pyrolysis gasifier box 2 and the reinforcing burn-out furnace box 3, conveniently clears up the lime-ash that drops.

Specifically, referring to fig. 1, the slag falling hopper 9 is a slag falling hopper 9 with an inverted trapezoidal side cross section.

Specifically, referring to fig. 1, a flue gas return input port 8 is arranged on the feeding pyrolysis gasifier tank 2. The flue gas generated by oxygen-enriched combustion of the enhanced burnout furnace box body 3 is pumped to the flue gas return input port 8 on the feed thermal cracking furnace box body through the external draught fan to participate in thermal cracking gasification combustion, namely secondary combustion is carried out, the nitrogen oxide in the flue gas is decomposed, the emission purpose of reducing the nitrogen oxide is achieved, and meanwhile, the effects of energy conservation and emission reduction are achieved.

Specifically, referring to fig. 1, the first driving device 1 and the second driving device 7 are each a reduction motor.

Specifically, referring to fig. 1, water is filled between the slag falling hopper 9 and the scraper slag remover 10. The filling has water for the lime-ash can be immersed in the water very first time, avoids raising the ash, has protected environment and staff's healthy.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (8)

1. The utility model provides a reciprocating type biomass gasification after-combustion bed of segmentation, includes biomass gasification stove body, its characterized in that: the biomass gasification furnace body comprises a feeding pyrolysis gasification furnace box body (2) and a reinforced burning-out furnace box body (3) arranged at the discharge end of the feeding pyrolysis gasification furnace box body (2), a first discharging bed (4) used for pushing fuel and ash slag is arranged in the feeding pyrolysis gasification furnace box body (2), the first discharging bed (4) is connected with a first driving device (1), a second discharging bed (5) used for receiving the fuel and the ash slag pushed from the discharge end of the first discharging bed (4) is arranged in the reinforced burning-out furnace box body (3), the height of the upper surface of the second discharging bed (5) is lower than that of the upper surface of the first discharging bed (4), the discharge end of the first discharging bed (4) extends to the position above the second discharging bed (5), the fuel and the ash slag fall onto the second discharging bed (5) from the discharge end of the first discharging bed (4), the second discharging bed (5) is connected with a second driving device (7), a slag hole (6) is formed in the position, corresponding to the reinforced burning-out furnace box body (3), of the discharging end of the second discharging bed (5), and ash slag is discharged from the slag hole (6) to the outer side of the reinforced burning-out furnace box body (3).

2. The segmented reciprocating biomass gasification ember bed according to claim 1, wherein: the pushing direction of the first discharging bed (4) is consistent with that of the second discharging bed (5).

3. The segmented reciprocating biomass gasification ember bed according to claim 1, wherein: still include scraper blade slagging-off machine (10) and set up the sediment fill (9) that falls in scraper blade slagging-off machine (10) top, feeding pyrolysis gasifier box (2) and intensive burn-off stove box (3) set up fall sediment fill (9) top, fall into the scraper blade slagging-off machine (10) of below from slag notch (6) carminative lime-ash.

4. The segmented reciprocating biomass gasification ember bed according to claim 3, wherein: the bottom of the feeding pyrolysis gasification furnace box body (2) and the bottom of the reinforced burning-out furnace box body (3) are provided with slag discharging windows (11), ash falling from the first discharging bed (4) and the second discharging bed (5) falls into a lower slag falling hopper (9) through the slag discharging windows (11), and the ash falls into a lower scraper slag remover (10) from the slag falling hopper (9).

5. The segmented reciprocating biomass gasification ember bed according to claim 3, wherein: the slag falling hopper (9) is a slag falling hopper (9) with an inverted trapezoidal side section.

6. The segmented reciprocating biomass gasification ember bed according to claim 1, wherein: and a flue gas return input port (8) is arranged on the feeding pyrolysis gasification furnace box body (2).

7. The segmented reciprocating biomass gasification ember bed according to claim 1, wherein: the first driving device (1) and the second driving device (7) are both speed reducing motors.

8. The segmented reciprocating biomass gasification ember bed according to claim 4, wherein: and water is filled between the slag falling hopper (9) and the scraper slag remover (10).

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