CN213060757U

CN213060757U - New forms of energy circulating fluidized bed gasifier

Info

Publication number: CN213060757U
Application number: CN202021895775.7U
Authority: CN
Inventors: 何豹
Original assignee: Hubei Yixiang New Energy Development Co ltd
Current assignee: Hubei Yixiang New Energy Development Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-27
Anticipated expiration: 2030-09-03

Abstract

The utility model relates to a circulating fluidized bed gasifier technical field just discloses a new forms of energy circulating fluidized bed gasifier, including the bunker, the fixed intercommunication in bottom of bunker has an inlet pipe, the fixed intercommunication of right-hand member of an inlet pipe has furnace, the fixed intercommunication in left top of furnace has cyclone. This new forms of energy circulating fluidized bed gasifier, discharge the slag that finishes through burning in the furnace thorax within the disintegration device, blade in the disintegration device can carry out the breakage to the end sediment when high-speed rotation, because end sediment ash density is less, and it is comparatively loose, end sediment ash wrapping up recoverable fuel granule outside is smashed, break up the formula and peel off, make inside fuel granule expose, and separate to both, collect inside fuel granule alone, the realization is retrieved the fuel granule for abundant burning, can put into and continue to use in the next burning, the waste of fuel has been saved.

Description

New forms of energy circulating fluidized bed gasifier

Technical Field

The utility model relates to a circulating fluidized bed gasifier technical field specifically is a new forms of energy circulating fluidized bed gasifier.

Background

The new energy circulating fluidized bed gasification furnace adopts a clean combustion technology with the highest industrialization degree, and the circulating fluidized bed boiler which is used most widely in the market at present is a technology for combusting coal, but along with the increasing environmental protection importance degree of the country, and the coal belongs to the less and less non-renewable resources, so that the fuel prepared by utilizing straws and the like becomes an indispensable part of renewable new energy, the reasonable application of the new energy circulating fluidized bed gasification furnace not only can reduce the environmental pollution caused by direct burning, but also can further reduce the pressure caused by energy demand.

The existing circulating fluidized bed gasification furnace has certain defects that fuel is combusted in a hearth and cannot be combusted by one hundred percent, so that the discharged bottom slag still contains less than 5 percent of unused part, the internal fuel cannot be fully contacted with oxygen and a catalyst due to the externally wrapped bottom slag ash, the combustion is insufficient, if the external bottom slag ash can be stripped, the internal residual fuel can be continuously extracted and generally is discharged after being industrially refrigerated, but the internal energy is undoubtedly wasted.

And the bottom slag ash still carries higher heat after discharging, the utility model discloses will provide a reasonable scheme and go on further retrieving this part of heat.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a new forms of energy circulating fluidized bed gasifier possesses the advantage of end sediment recovery and recycle and heat recovery and recycle, has solved the problem that above-mentioned background art provided.

The utility model provides a following technical scheme: the utility model provides a new forms of energy circulating fluidized bed gasifier, includes bunker 1, the fixed intercommunication in bottom of bunker 1 has inlet pipe 3 No. one, the fixed intercommunication of the right-hand member of inlet pipe 3 has furnace 2, the fixed intercommunication in left top of furnace 2 has cyclone 4 No. one, the fixed intercommunication in bottom of cyclone 4 has inlet pipe 5 No. two, inlet pipe 5 and the fixed intercommunication of inlet pipe 3 No. two, the fixed intercommunication in cracker 8 in bottom of furnace 2, cracker 8's inside from the top down fixed mounting has screen cloth 12 and baffle 13 in proper order, cracker 8's bottom fixed mounting has motor 11, motor 11's output shaft fixedly connected with dwang 9, the fixed surface of dwang 9 installs blade 7, vent 21 has all been seted up to the left and right sides on cracker 8 upper portion, the ash discharging port 10 is formed in the lower portion of the disintegrating device 8, the fan 6 is arranged on the left side of the disintegrating device 8, the fan 6 is communicated with the air port 21 in the left side of the disintegrating device 8, the discharging pipe 14 is fixedly communicated with the middle lower portion of the right side of the disintegrating device 8, and the collecting box 15 is fixedly communicated with the right end of the discharging pipe 14.

Preferably, the right air port 21 is fixedly communicated with a first air duct 16, the right end of the first air duct 16 is fixedly communicated with a second cyclone separator 17, the top of the second cyclone separator 17 is fixedly communicated with a second air duct 18, the bottom of the second air duct 18 is fixedly communicated with a heat exchange box 19, and a preheating pipe 20 is arranged inside the heat exchange box 19.

Preferably, the blades 7 have three groups, each group of blades 7 is provided with twelve blades, three groups of blades 7 are vertically arranged from top to bottom, the twisting direction of the lowest group of blades 7 is opposite to the twisting direction of the upper two groups of blades 7, the output shaft of the motor 11 rotates anticlockwise, the twisting direction of the upper two groups of blades 7 can hit fallen bottom slag upwards, the bottom slag is smashed and bounced upwards, the bottom slag can be hit upwards again if colliding with the uppermost group of blades 7 again after falling, the bottom slag can fall above the middle group of blades 7 in the gap of the blades 7 if not colliding with the bottom slag, the process can be repeated again if colliding with the middle group of blades 7 until the bottom slag passes through the middle group of blades 7, the passing bottom slag is located above the lowest group of blades 7, the twisting direction of the lowest group of blades 7 can hit the bottom slag downwards onto the screen 12, from this just, carried out the tricycle breakage to the end sediment, beat the end sediment ash that its outside is wrapped up, and flow away through vent 21 or screen cloth 12, but because retrieve the great unable screen cloth 12 that passes through of granule, just follow screen cloth 12 and get into in discharging pipe 14, and the process of beating the end sediment upwards when rotating is twisted to blade 7 in the top and middle is in order to improve the time length that the end sediment is detained in vent 21 centre, so that the air current that fan 6 blew out can take away the heat as much as possible, and blade 7 can carry out the multistage breakage to the end sediment, with the purity that improves the recovery granule.

Preferably, the screen 12 is installed in the inside of the disintegrator device 8 in an inclined manner in a left-high-right-low manner, the relative position of the material discharge pipe 14 is located below the screen 12, the bottom of the inner wall of the material discharge pipe 14 is located below the right side of the screen 12, and the recovered particles sliding down along the screen 12 enter the material discharge pipe 14 and enter the collection tank 15 along the material discharge pipe 14 due to the fact that the material discharge pipe 14 is low in vertical height.

Preferably, the two air vents 21 are aligned at the opening positions on the surface of the disintegrating device 8 and are positioned on the same horizontal plane, the rotating speed of the fan 6 is not too high, that is, the flow rate of the air flow blown into the disintegrating device 8 by the fan 6 is not too high, if the flow rate is too high, the recovered particles with larger gravity originally are blown into the first air duct 16 together, therefore, only the part of the bottom slag ash is required to be blown to the first air duct 16, the bottom slag ash along with the heated airflow enters the second cyclone separator 17 along the first air duct 16, if larger recycled particles enter the second cyclone 17, dust and air flow are difficult to separate, and the larger particles are difficult to pass through the first air duct 16, excessive accumulation in airway one 16 may result in an obstructed or poorly ventilated airway one 16.

Preferably, the shape of the preheating pipe 20 is a serpentine arrangement, the lower end of the preheating pipe 20 is a water inlet, the upper end of the preheating pipe 20 is a water outlet, after the hot air flows into the heat exchange box 19 from the second air duct 18, the direction of the air flow is from top to bottom, the direction of the water flow in the preheating pipe 20 is from bottom to top, the hot air flow and the water flow are opposite, and the heat exchange rate can be improved by the reverse flow of the hot air flow and the water flow, so that the water flow heating efficiency is ensured.

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

1. this new forms of energy circulating fluidized bed gasifier, discharge the slag that finishes through burning in the furnace thorax within the disintegration device, blade in the disintegration device can carry out the breakage to the end sediment when high-speed rotation, because end sediment ash density is less, and it is comparatively loose, end sediment ash wrapping up recoverable fuel granule outside is smashed, break up the formula and peel off, make inside fuel granule expose, and separate to both, collect inside fuel granule alone, the realization is retrieved the fuel granule for abundant burning, can put into and continue to use in the next burning, the waste of fuel has been saved.

2. This new forms of energy circulating fluidized bed gasifier blows in the air current in to the fragmentation device through the fan, lets the air current walk the heat of end sediment in with the fragmentation device, through an air duct, No. two cyclone, No. two air ducts and heat transfer case again, with heat conduction on water in advancing the preheater tube, preheats the water in the preheater tube, be convenient for in letting in follow-up each process that needs water, for example in boiler or the over heater, improved heat utilization efficiency, reduce the heat waste.

Drawings

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

FIG. 2 is a top view of the blade of the present invention;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 1 according to the present invention;

FIG. 4 is a schematic structural view of the screen and the discharge pipe of the present invention.

In the figure: 1. a fuel bunker; 2. a hearth; 3. a first feeding pipe; 4. a first cyclone separator; 5. a second feeding pipe; 6. a fan; 7. a blade; 8. a disintegrating device; 9. rotating the rod; 10. an ash discharge port; 11. a motor; 12. screening a screen; 13. a partition plate; 14. a discharge pipe; 15. a collection box; 16. a first gas guide tube; 17. a second cyclone separator; 18. a second air duct; 19. a heat exchange box; 20. a preheating pipe; 21. and (4) a vent.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a new energy circulating fluidized bed gasification furnace comprises a fuel bin 1, a first feeding pipe 3 is fixedly communicated with the bottom of the fuel bin 1, a hearth 2 is fixedly communicated with the right end of the first feeding pipe 3, a first cyclone separator 4 is fixedly communicated with the top of the left side of the hearth 2, a second feeding pipe 5 is fixedly communicated with the bottom of the first cyclone separator 4, the second feeding pipe 5 is fixedly communicated with the first feeding pipe 3, the bottom of the hearth 2 is fixedly communicated with a disintegrating device 8, a screen 12 and a partition plate 13 are fixedly installed in the disintegrating device 8 from top to bottom in sequence, a motor 11 is fixedly installed at the bottom of the disintegrating device 8, a rotating rod 9 is fixedly connected with an output shaft of the motor 11, blades 7 are fixedly installed on the outer surface of the rotating rod 9, vent holes 21 are formed in the left side and the right side of the upper portion of the disintegrating device 8, the ash discharging port 10 is formed in the lower portion of the disintegrating device 8, the fan 6 is arranged on the left side of the disintegrating device 8, the fan 6 is communicated with the air port 21 in the left side of the disintegrating device 8, the discharging pipe 14 is fixedly communicated with the middle lower portion of the right side of the disintegrating device 8, and the collecting box 15 is fixedly communicated with the right end of the discharging pipe 14.

The right side air vent 21 is fixedly communicated with a first air duct 16, the right end of the first air duct 16 is fixedly communicated with a second cyclone separator 17, the top of the second cyclone separator 17 is fixedly communicated with a second air duct 18, the bottom of the second air duct 18 is fixedly communicated with a heat exchange box 19, and a preheating pipe 20 is arranged inside the heat exchange box 19.

Wherein, the blades 7 have three groups, each group of blades 7 is provided with twelve blades, the three groups of blades 7 are vertically arranged from top to bottom, the twisting direction of the blades 7 of the lowest group is opposite to the twisting direction of the blades 7 of the upper two groups, the output shaft of the motor 11 rotates anticlockwise, the twisting direction of the blades 7 of the upper two groups can hit fallen bottom slag upwards, the bottom slag is smashed and bounced upwards, the bottom slag can be hit upwards again if colliding with the blades 7 of the uppermost group after falling, the bottom slag can fall to the upper part of the blades 7 of the middle group in the gap of the blades 7 if not colliding with the blades 7 of the middle group, the process can be repeated again if colliding with the blades 7 of the middle group until the bottom slag passes through the blades 7 of the middle group, the twisting direction of the blades 7 of the lowest group can drop the bottom slag downwards onto the screen 12, from this just, carried out the tricycle breakage to the end sediment, beat the end sediment ash that its outside is wrapped up, and flow away through vent 21 or screen cloth 12, but because retrieve the great unable screen cloth 12 that passes through of granule, just follow screen cloth 12 and get into in discharging pipe 14, and the process of beating the end sediment upwards when rotating is twisted to blade 7 in the top and middle is in order to improve the time length that the end sediment is detained in vent 21 centre, so that the air current that fan 6 blew out can take away the heat as much as possible, and blade 7 can carry out the multistage breakage to the end sediment, with the purity that improves the recovery granule.

The screen 12 is obliquely arranged inside the disintegrator 8 in a left-high-right inclined mode, the relative position of the discharge pipe 14 is located below the screen 12, the bottom of the inner wall of the discharge pipe 14 is located below the right side of the screen 12, and as the vertical height of the discharge pipe 14 is lower, recovered particles sliding down the screen 12 enter the discharge pipe 14 and enter the collection box 15 along the discharge pipe 14.

Wherein, the two air vents 21 are aligned at the opening positions on the surface of the disintegration device 8 and are positioned on the same horizontal plane, the rotating speed of the fan 6 is not too fast, that is, the flow rate of the air flow blown into the disintegrating device 8 by the fan 6 is not too high, if the flow rate is too high, the recovered particles with larger gravity originally are blown into the first air duct 16 together, therefore, only the part of the bottom ash is required to be blown to the first air duct 16, the bottom ash along with the heated air flow enters the second cyclone separator 17 along the first air duct 16, if larger recycled particles enter the second cyclone 17, dust and air flow are difficult to separate, and the larger particles are difficult to pass through the first air duct 16, excessive accumulation in airway one 16 may result in an obstructed or poorly ventilated airway one 16.

The shape of the preheating pipe 20 is a serpentine arrangement, the lower end of the preheating pipe 20 is a water inlet, the upper end of the preheating pipe 20 is a water outlet, after the hot air flows into the heat exchange box 19 from the second air duct 18, the direction of the air flow is from top to bottom, the direction of the water flow in the preheating pipe 20 is from bottom to top, the directions of the hot air flow and the water flow are opposite, and the heat exchange rate can be improved by the reverse flow of the hot air flow and the water flow, so that the water flow heating efficiency is ensured.

The working principle is as follows:

the fuel raw material falls from the fuel bin 1 and falls into the hearth 2 along with the first feeding pipe 3, the bed material falls in the first cyclone separator 4 and enters the hearth 2 along with the fuel raw material, then the bed material and the bed material are fully mixed and combusted in the hearth 2, the hot airflow discharged after the combustion moves upwards along the hearth 2 and finally enters the first cyclone separator 4, the first cyclone separator 4 is used for separation, after the flue gas is separated from the bed material, the flue gas can continuously drift upwards to enter the next process, but the bed material sinks and is continuously introduced into the first feeding pipe 3, then the first feeding pipe 2 continuously reacts, after the fuel raw material is combusted for a period of time, the bottom slag needs to be discharged, the bottom slag discharged to the outside enters the disintegrating device 8 for disintegrating and separating, and finally high-purity recovered fuel particles capable of further combustion are obtained, the heat brought out by the airflow introduced into the disintegrating device 8 by the fan 6 and the bottom slag enters the heat exchange box 19 along the first air duct 16, the second cyclone 17 and the second air duct 18 to heat the water in the preheating pipe 20.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a new forms of energy circulating fluidized bed gasifier, includes bunker (1), its characterized in that: the fixed intercommunication in bottom of bunker (1) has inlet pipe (3) No. one, the fixed intercommunication of right-hand member of inlet pipe (3) has furnace (2), the fixed intercommunication in left top of furnace (2) has cyclone (4) No. one, the fixed intercommunication in bottom of cyclone (4) has inlet pipe (5) No. two, inlet pipe (5) and inlet pipe (3) fixed intercommunication No. two, the fixed intercommunication in fragmentation device (8) in bottom of furnace (2), the inside from the top down of fragmentation device (8) fixed mounting have screen cloth (12) and baffle (13) in proper order, the bottom fixed mounting of fragmentation device (8) has motor (11), the output shaft fixedly connected with dwang (9) of motor (11), the fixed surface of dwang (9) installs blade (7), air vent (21) have all been seted up to the left and right sides on fragmentation device (8) upper portion, ash discharge mouth (10) have been seted up to fragmentation device (8) lower part, the left side of fragmentation device (8) is provided with fan (6), fan (6) and left side air vent (21) intercommunication of fragmentation device (8), the fixed intercommunication of well lower part on fragmentation device (8) right side has discharging pipe (14), the fixed intercommunication of right-hand member of discharging pipe (14) has collecting box (15).

2. The new energy circulating fluidized bed gasification furnace according to claim 1, characterized in that: the right side air vent (21) is fixed to be communicated with a first air duct (16), the right end of the first air duct (16) is fixed to be communicated with a second cyclone separator (17), the top of the second cyclone separator (17) is fixed to be communicated with a second air duct (18), the bottom of the second air duct (18) is fixed to be communicated with a heat exchange box (19), and a preheating pipe (20) is arranged inside the heat exchange box (19).

3. The new energy circulating fluidized bed gasification furnace according to claim 1, characterized in that: the blade (7) has three groups, each group of the blades (7) is provided with twelve blades, the three groups of the blades (7) are vertically arranged from top to bottom, and the twisting direction of the blade (7) of the lowest group is opposite to that of the two groups of the blades (7) at the upper part.

4. The new energy circulating fluidized bed gasification furnace according to claim 1, characterized in that: the screen cloth (12) is installed in the interior of the disintegrating device (8) in an inclined mode, the inclined mode is high left and low right, the relative position of the discharge pipe (14) is located below the screen cloth (12), and the bottom of the inner wall of the discharge pipe (14) is located below the right side of the screen cloth (12).

5. The new energy circulating fluidized bed gasification furnace according to claim 1, characterized in that: the two air vents (21) are aligned at the opening positions on the surface of the disintegrating device (8) and are positioned on the same horizontal plane.

6. The new energy circulating fluidized bed gasification furnace according to claim 2, characterized in that: the shape of the preheating pipe (20) is arranged in a snake shape, the lower end of the preheating pipe (20) is a water inlet, and the upper end of the preheating pipe is a water outlet.