CN215388500U - Biomass boiler flue gas dust removal equipment for sulfide - Google Patents

Abstract

The utility model discloses a biomass boiler flue gas dust removal device for sulfide-containing materials, which comprises a base, and a first filter box, a heat exchanger, a second filter box and a desulfurizing tower which are arranged on the base, wherein an air inlet of the first filter box is connected with a flue gas inlet pipe, the lower ends of the first filter box and the second filter box are respectively connected with a first discharge pipe and a second discharge pipe, the lower openings of the first discharge pipe and the second discharge pipe are respectively covered with a first discharge bin and a second discharge bin, the first discharge bin and the second discharge bin are communicated with an ash collection bin arranged at the upper end of the base, and the upper end of the ash collection bin is provided with a shaking mechanism for pushing the first discharge bin and the second discharge bin to shake; this flue gas dust collecting equipment adopts the filter plate to filter and the electric precipitation mode, carries out double-deck processing to granule in the flue gas, improves smoke and dust filter effect, and the ash outlet that is located dust collecting equipment in addition adopts movable heating cover body design, can heat the intraoral impurity of cover in the vibration, makes the dust can not glue, improves discharge efficiency simultaneously.

Description

Biomass boiler flue gas dust removal equipment for sulfide

Technical Field

The utility model relates to the technical field of flue gas treatment, in particular to a biomass boiler flue gas dust removal device for sulfide.

Background

The biomass boiler is a kind of boiler, namely a boiler using biomass energy as fuel is called a biomass boiler and is divided into a biomass steam boiler, a biomass hot water boiler, a biomass hot air furnace, a biomass heat-conducting oil furnace, a vertical biomass boiler, a horizontal biomass boiler and the like. The boiler can produce a large amount of waste gas when burning, need handle through dust collecting equipment to reach compound emission standard.

Publication No. CN112007465B discloses a flue gas desulfurization, denitrification and dust removal purification device of a biomass boiler, which comprises a straight flue, a primary heat exchanger, a transverse flue, a dust removal mechanism, a dehydrator and a desulfurization tower which are connected in sequence; the top of the transverse flue is provided with a nozzle assembly which sprays a denitrification reagent to remove smoke nitrogen oxides; the dust removal mechanism comprises a dust removal cylinder, and two refrigeration dust removal pipes which are symmetrically distributed are arranged on the inner wall of the dust removal cylinder. This equipment is through reducing flue gas temperature, electric precipitation and SOx/NOx control's mode, handles the flue gas, and electric precipitation mode is when handling the boiler flue gas that has a lot of carbon black granules, can't obtain guaranteeing in the treatment effect, and the impurity after filtering and collecting in addition when the business turn over material, glues easily and causes the jam at the discharge gate pipe wall to influence flue gas treatment efficiency and the maintenance degree of difficulty. In this regard, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a biomass boiler flue gas dust removal device containing sulfide, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a biomass boiler flue gas dust removal device for sulfide-containing materials comprises a base, and a first filter box, a heat exchanger, a second filter box and a desulfurizing tower which are arranged on the base, wherein an air inlet of the first filter box is connected with a flue gas inlet pipe, and an air outlet of the first filter box is communicated with the second filter box through a flue gas exhaust pipe;

the lower ends of the first filter box and the second filter box are respectively connected with a first discharging pipe and a second discharging pipe, the lower openings of the first discharging pipe and the second discharging pipe are respectively covered with a first discharging bin and a second discharging bin, the first discharging bin and the second discharging bin are communicated with an ash collecting bin arranged at the upper end of the base, and the upper end of the ash collecting bin is provided with a shaking mechanism used for pushing the first discharging bin and the second discharging bin to shake;

the heat exchanger is arranged at the joint of the smoke inlet pipe and the first filter box, is connected with the first discharge bin and the second discharge bin through a waste heat recovery pipeline, and is used for cooling the smoke entering the first filter box and heating the first discharge bin and the second discharge bin;

and the desulfurizing tower is arranged on one side of the second filter box, is communicated with an air outlet of the second filter box through a guide pipe and is used for desulfurizing the filtered flue gas.

Preferably, first feed bin and second feed bin all establish the heating mantle outside first discharging pipe and the second discharging pipe including the cover, are equipped with the toper cover in the heating mantle lower port, and the port cover is established outside first discharging pipe and second discharging pipe lower port and through shell fragment and heating mantle inner wall connection on the toper cover, and the toper cover lower extreme passes the punishment in advance mouth that the collection ash storehouse upper end was seted up and extends to in the collection ash storehouse.

Preferably, the waste heat recovery pipeline comprises a cooling pipe arranged at the upper end of the heat exchanger, one end of the cooling pipe is connected with the output end of the heat exchanger, the other end of the cooling pipe is wound outside the smoke inlet pipe and is communicated with a return pipe arranged below the first filter box, and one end of the return pipe, far away from the cooling pipe, sequentially penetrates through a heat conduction cavity formed in the end wall of the heating cover and is connected with the input end of the circulator.

Preferably, the first filter box comprises a main box body, a plurality of filter cloths are arranged in the main box body, a filter gas cavity is reserved in the middle of each filter cloth, the lower end opening of the filter gas cavity is communicated with the first discharge pipe, and the upper end part of the filter gas cavity is provided with a nozzle which is connected with a pulse valve arranged at the upper end of the main box body.

Preferably, the second filter box comprises a barrel body, positive and negative electrode plates are arranged in the barrel body, and the positive and negative electrode plates are arranged above the smoke exhaust pipe.

Preferably, the shaking mechanism comprises a plurality of mounting seats, the mounting seats are arranged at the upper end of the ash collecting bin and correspond to the conical cover, an eccentric wheel is arranged at the center of each mounting seat, a driving assembly is connected onto the eccentric wheel, a fixing groove seat is arranged on the surface of each mounting seat facing one side of the conical cover, a floating top pin penetrates through the fixing groove seat, one end of the floating top pin is matched with the eccentric wheel, and the other end of the floating top pin is matched with the conical cover.

Preferably, the driving assembly comprises a driving motor installed at the upper end of the dust collecting bin, a transmission shaft is arranged at the output end of the driving motor, and the transmission shaft sequentially penetrates through each mounting seat and is fixedly connected with an eccentric wheel on the mounting seat.

Preferably, the floating knock pin comprises a movable pin, the movable pin is arranged in a movable groove formed in the fixed groove seat and matched with the movable groove, and a spring part used for resetting the movable pin is arranged in the movable groove.

Preferably, the discharge port of the first filter box is a conical cover body, the inner wall of the conical cover body is provided with a plurality of annularly arranged anti-abrasion angle irons, and one side of each anti-abrasion angle iron facing the filter cloth is an arc curved surface.

Compared with the prior art, the utility model has the beneficial effects that: this flue gas dust collecting equipment adopts the filter plate to filter and the electric precipitation mode, carries out double-deck processing to granule in the flue gas, improves smoke and dust filter effect, and the ash outlet that is located dust collecting equipment in addition adopts movable heating cover body design, can heat the intraoral impurity of cover in the vibration, makes the dust can not glue, improves discharge efficiency simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of a flue gas dust removal device for a sulfide-containing biomass boiler.

FIG. 2 is a schematic diagram of a desulfurizing tower used in a sulfide-containing biomass boiler flue gas dust removal device.

FIG. 3 is a schematic structural diagram of a filter cloth used in a sulfide-containing biomass boiler flue gas dust removal device.

FIG. 4 is a schematic diagram of a heating mantle used in a sulfide-containing biomass boiler flue gas dust removal apparatus.

FIG. 5 is a schematic diagram of a conical hood for use in a sulfide-containing biomass boiler flue gas dust removal apparatus.

FIG. 6 is a schematic structural diagram of an angle iron for preventing abrasion in a flue gas dust removing device of a biomass boiler containing sulfide.

In the figure: 1. a base; 2. an ash collecting bin; 3. a first filter box; 4. a heat exchanger; 5. a smoke inlet pipe; 6. a cooling tube; 7. a smoke exhaust pipe; 8. a second filter box; 9. a desulfurizing tower; 10. a pulse valve; 11. a nozzle; 12. filtering cloth; 13. a first discharge pipe; 14. a first discharging bin; 15. a second discharge pipe; 16. a second discharging bin; 17. wear-resistant angle iron; 18. a return pipe; 19. a heating mantle; 20. a heat conducting cavity; 21. a conical cover; 22. a spring plate; 23. a mounting seat; 24. an eccentric wheel; 25. fixing the groove seat; 26. a movable pin; 27. a spring member; 28. a drive shaft; 29. the motor is driven.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 to 5, in embodiment 1 of the present invention, a flue gas dust removal apparatus for a biomass boiler containing sulfides includes a base 1, and a first filter box 3, a heat exchanger 4, a second filter box 8 and a desulfurizing tower 9 which are arranged on the base 1, an air inlet of the first filter box 3 is connected with a flue gas inlet pipe 5, and an air outlet of the first filter box 3 is communicated with the second filter box 8 through a smoke exhaust pipe 7;

the lower ends of the first filter box 3 and the second filter box 8 are respectively connected with a first discharge pipe 13 and a second discharge pipe 15, the lower openings of the first discharge pipe 13 and the second discharge pipe 15 are respectively covered with a first discharge bin 14 and a second discharge bin 16, the first discharge bin 14 and the second discharge bin 16 are communicated with an ash collection bin 2 arranged at the upper end of the base 1, and the upper end of the ash collection bin 2 is provided with a shaking mechanism for pushing the first discharge bin 14 and the second discharge bin 16 to shake; the shaking mechanism comprises a plurality of mounting seats 23, the mounting seats 23 are arranged at the upper end of the ash collecting bin 2 and correspond to the conical cover 21, an eccentric wheel 24 is arranged at the center of the mounting seat 23, a driving assembly is connected onto the eccentric wheel 24, a fixed groove seat 25 is arranged on one side, facing the conical cover 21, of the mounting seat 23, a floating top pin penetrates through the fixed groove seat 25, one end of the floating top pin is matched with the eccentric wheel 24, and the other end of the floating top pin is matched with the conical cover 21.

The heat exchanger 4 is arranged at the joint of the smoke inlet pipe 5 and the first filter box 3, is connected with the first discharge bin 14 and the second discharge bin 16 through a waste heat recovery pipeline, and is used for cooling the smoke entering the first filter box 3 and heating the first discharge bin 14 and the second discharge bin 16; and the desulfurizing tower 9 is arranged on one side of the second filtering box 8, is communicated with an air outlet of the second filtering box 8 through a guide pipe and is used for desulfurizing the filtered flue gas.

First feed bin 14 and second feed bin 16 all establish heating mantle 19 outside first discharging pipe 13 and second discharging pipe 15 including the cover, are equipped with toper cover 21 in the 19 lower ports of heating mantle, and toper cover 21 upper end gauze mask is established outside first discharging pipe 13 and second discharging pipe 15 lower port and is passed through shell fragment 22 and 19 interior wall connections of heating mantle, and toper cover 21 lower extreme passes the punishment in advance mouth that the ash collecting bin 2 upper end was seted up and extends to in the ash collecting bin 2. The conical cover 21 is a conical cover body, and is wide at the top and narrow at the bottom. A gap is reserved between the material passing opening and the lower end of the conical cover 21, so that the conical cover 21 can rock at the material passing opening.

The waste heat recovery pipeline comprises a cooling pipe 6 arranged at the upper end of the heat exchanger 4, one end of the cooling pipe 6 is connected with the output end of the heat exchanger, the other end of the cooling pipe 6 is wound outside the smoke inlet pipe 5 and is communicated with a return pipe 18 arranged below the first filter box 3, and one end of the return pipe 18, which is far away from the cooling pipe 6, sequentially penetrates through a heat conduction cavity 20 formed in the end wall of the heating cover 19 and is connected with the input end of the winding device; the cooling tube 6 encircles and meets with advancing the pipe shaft of tobacco pipe 5 outside advancing the pipe shaft of tobacco pipe 5, carry coolant liquid, heat exchanger 4 work, cooling tube 6 carries coolant liquid, to advancing tobacco pipe 5 and advance the preliminary cooling of flue gas in the tobacco pipe 5, coolant liquid after the heat rise gets into in the back flow 18, coolant liquid gets into the heat conduction chamber 20 of seting up in each heating mantle 19 and heats heating mantle 19 through the back flow 18, heating mantle 19 is through heat-conduction mode, the dust that falls down in first discharging pipe 13 and the second discharging pipe 15 heats, guarantee that the dust is in dry state can not glue on first discharging pipe 13 and second discharging pipe 15 pipe wall.

The first filter box 3 comprises a main box body, a plurality of filter cloths 12 are arranged in the main box body, a filter gas cavity is reserved in the middle of each filter cloth 12, the lower end of the filter gas cavity is communicated with a first discharge pipe 13, a nozzle 11 is arranged at the upper end of the filter gas cavity, and the nozzle 11 is connected with a pulse valve 10 arranged at the upper end of the main box body. The pulse valve 10 is connected to a pressurizing line. Dust-containing gas enters the main box body through the smoke inlet pipe 5, dust particles with fine particle size and small density enter each dust filtering cavity, the dust is settled on the surface of the filter cloth 12 through the combined effects of Brown diffusion, screening and the like, and the purified gas is conveyed into the second filtering box 8 through the smoke exhaust pipe 7. The resistance of the filter chamber increases with the thickness of the dust layer on the surface of the filter cloth 12. When the resistance reaches a certain set value, ash is removed. At this time, the PLC program of the dust collector controls the pulse valves 10 to be opened one by one, and the compressed air is flushed into the filter air chamber through the nozzle 11 in a very short time, so that the dust attached to the outer surface of the filter cloth 12 is stripped off and falls into the first discharge pipe 13.

The second filter box 8 comprises a barrel body, wherein positive and negative electrode plates are arranged in the barrel body and are arranged above the smoke exhaust pipe 7. The second filter box 8 is a vertical electrostatic precipitator. The positive and negative motor pieces are connected with current to generate a high-voltage electrostatic field, dust-containing gas is electrically separated when passing through the high-voltage electrostatic field, dust particles and negative ions are combined to be charged negatively and then tend to be discharged from the surface of an anode to be deposited, the deposited dust falls into the dust collecting bin 2 through the second discharge pipe 15 and the second discharge bin 16 to be collected, and meanwhile, the filter bag is arranged to collect dust and remove electrostatic dust, so that the defect that carbon black particles in boiler smoke are difficult to remove in a single electrostatic dust collection mode is solved.

The driving component comprises a driving motor 29 arranged at the upper end of the dust collecting bin 2, the output end of the driving motor 29 is provided with a transmission shaft 28, and the transmission shaft 28 sequentially penetrates through each mounting seat 23 and is fixedly connected with the eccentric wheel 24 on the mounting seat 23. The floating knock pin comprises a movable pin 26, the movable pin 26 is arranged in a movable groove formed in the fixed groove seat 25 and matched with the movable groove, and a spring part 27 for resetting the movable pin 26 is arranged in the movable groove. The driving motor 29 is started to drive the transmission shaft 28 to rotate, the transmission shaft 28 drives the eccentric wheels 24 on the installation bases 23 to rotate, when the eccentric wheels 24 pass through the rotation, the movable pins 26 are matched with the spring pieces 27 to make the movable pins 26 do reciprocating linear motion in the movable grooves, and the movable pins 26 beat the lower end portions of the conical covers 21 in the motion, so that the conical covers 21 shake, and dust can conveniently fall off.

Referring to fig. 6, in embodiment 2 of the present invention, the difference from embodiment 1 is that the discharge port of the first filtering box 3 is a conical cover body, the inner wall of the conical cover body is provided with a plurality of annularly disposed anti-wear angle irons 17, and one side of each anti-wear angle iron 17 facing the filtering cloth 12 is an arc curved surface. Because the discharge gate inner wall of abrasionproof angle 17 is more outstanding, in long-time the use, the fenestrate condition of wearing and tearing can appear in the internal wall of conical cover, through install a plurality of abrasionproof angle 17 additional in the window department of the conical cover body, abrasionproof angle 17 can shunt the flue gas through the circular arc curved surface, reduces the impact that the internal wall of conical cover received, plays the effect of abrasionproof loss.

Utility model's theory of operation: the dust-containing gas enters the main box body through the smoke inlet pipe 5, dust particles with fine particle size and small density enter each dust filtering cavity, the dust is settled on the surface of the filter cloth 12 through the combined effects of Brown diffusion, screening and the like, the purified gas is conveyed to the second filter box 8 through the smoke exhaust pipe 7, the pulse valves 10 are opened one by one, the compressed air is flushed into the dust filtering cavities through the nozzles 11 in a very short time, and the dust attached to the outer surface of the filter cloth 12 is stripped and falls into the first discharge pipe 13. The positive and negative motor pieces are connected with current to generate a high-voltage electrostatic field, dust-containing gas is electrically separated when passing through the high-voltage electrostatic field, dust particles and negative ions are combined to be charged negatively and then tend to be discharged from the surface of the anode to be deposited, and the deposited dust falls into the dust collecting bin 2 through the second discharge pipe 15 and the second discharge bin 16 to be collected. The filtered smoke dust enters the desulfurizing tower 9 through a guide pipe for desulfurizing. The driving motor 29 is started to drive the transmission shaft 28 to rotate, the transmission shaft 28 drives the eccentric wheels 24 on each mounting seat 23 to rotate, when the eccentric wheels 24 pass through the rotation, the movable pins 26 are matched with the spring pieces 27 in the movable grooves to do reciprocating linear motion, the movable pins 26 beat the lower end parts of the conical covers 21 in the motion, the conical covers 21 shake, and dust attached to the inner walls of the conical covers 21 falls into the dust collecting bin 2; this flue gas dust collecting equipment adopts the filter plate to filter and the electric precipitation mode, carries out double-deck processing to granule in the flue gas, improves smoke and dust filter effect, and the ash outlet that is located dust collecting equipment in addition adopts movable heating cover body design, can heat the intraoral impurity of cover in the vibration, makes the dust can not glue, improves discharge efficiency simultaneously.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims (9)

1. The biomass boiler flue gas dust removal equipment for the sulfide-containing biomass boiler comprises a base (1), and a first filter box (3), a heat exchanger (4), a second filter box (8) and a desulfurizing tower (9) which are arranged on the base (1), and is characterized in that an air inlet of the first filter box (3) is connected with a flue gas inlet pipe (5), and an air outlet of the first filter box (3) is communicated with the second filter box (8) through a flue gas exhaust pipe (7);

the lower ends of the first filter box (3) and the second filter box (8) are respectively connected with a first discharge pipe (13) and a second discharge pipe (15), the lower openings of the first discharge pipe (13) and the second discharge pipe (15) are respectively covered with a first discharge bin (14) and a second discharge bin (16), the first discharge bin (14) and the second discharge bin (16) are communicated with an ash collection bin (2) arranged at the upper end of the base (1), and the upper end of the ash collection bin (2) is provided with a shaking mechanism for pushing the first discharge bin (14) and the second discharge bin (16) to shake;

the heat exchanger (4) is arranged at the joint of the smoke inlet pipe (5) and the first filter box (3), is connected with the first discharge bin (14) and the second discharge bin (16) through a waste heat recovery pipeline, and is used for cooling the smoke entering the first filter box (3) and heating the first discharge bin (14) and the second discharge bin (16);

and the desulfurizing tower (9) is arranged on one side of the second filtering box (8), is communicated with an air outlet of the second filtering box (8) through a guide pipe and is used for desulfurizing the filtered flue gas.

2. The biomass boiler flue gas dust removal equipment for containing sulfide of claim 1, wherein the first discharging bin (14) and the second discharging bin (16) comprise heating covers (19) sleeved outside the first discharging pipe (13) and the second discharging pipe (15), a conical cover (21) is arranged in a lower port of each heating cover (19), an upper end of each conical cover (21) is covered outside the lower ports of the first discharging pipe (13) and the second discharging pipe (15) and is connected with the inner wall of each heating cover (19) through an elastic sheet (22), and the lower end of each conical cover (21) penetrates through a material passing port formed in the upper end of the ash collecting bin (2) and extends into the ash collecting bin (2).

3. The dust removing device for the sulfur-containing biomass boiler flue gas is characterized in that the waste heat recovery pipeline comprises a cooling pipe (6) arranged at the upper end of a heat exchanger (4), one end of the cooling pipe (6) is connected with the output end of the heat exchanger, the other end of the cooling pipe (6) is wound outside a smoke inlet pipe (5) and is communicated with a return pipe (18) arranged below a first filter box (3), and one end, far away from the cooling pipe (6), of the return pipe (18) is sequentially connected with the input end of the winding device through a heat conduction cavity (20) formed in the end wall of a heating cover (19).

4. The dust removing device for the sulfur-containing biomass boiler flue gas is characterized in that the first filter box (3) comprises a main box body, a plurality of filter cloths (12) are arranged in the main box body, a filter gas cavity is reserved in the middle of each filter cloth (12), the lower end of the filter gas cavity is communicated with a first discharge pipe (13), the upper end of the filter gas cavity is provided with a nozzle (11), and the nozzle (11) is connected with a pulse valve (10) arranged at the upper end of the main box body.

5. The dust removing equipment for the sulfide-containing biomass boiler flue gas as recited in claim 1, wherein the second filter box (8) comprises a barrel body, and positive and negative electrode plates are arranged in the barrel body and are arranged above the smoke exhaust pipe (7).

6. The device for removing the dust in the flue gas of the biomass boiler containing the sulfide as claimed in claim 2, wherein the shaking mechanism comprises a plurality of installation seats (23), the installation seats (23) are arranged at the upper end of the ash collecting bin (2) and correspond to the conical cover (21), an eccentric wheel (24) is arranged at the center of the installation seat (23), a driving component is connected onto the eccentric wheel (24), a fixed groove seat (25) is arranged on one side, facing the conical cover (21), of the installation seat (23), a floating top pin penetrates through the fixed groove seat (25), one end of the floating top pin is matched with the eccentric wheel (24), and the other end of the floating top pin is matched with the conical cover (21).

7. The dust removing device for the sulfur-containing biomass boiler flue gas is characterized in that the driving assembly comprises a driving motor (29) installed at the upper end of the ash collecting bin (2), the output end of the driving motor (29) is provided with a transmission shaft (28), and the transmission shaft (28) sequentially penetrates through each mounting seat (23) and is fixedly connected with an eccentric wheel (24) on the mounting seat (23).

8. The flue gas dust removal apparatus for biomass boilers containing sulfides according to claim 6, characterized in that the floating knock pin comprises a movable pin (26), the movable pin (26) is disposed in and matched with a movable groove formed in the fixed groove seat (25), and a spring member (27) for resetting the movable pin (26) is disposed in the movable groove.

9. The dust removing equipment for the sulfur-containing biomass boiler flue gas is characterized in that the discharge port of the first filter box (3) is a conical cover body, the inner wall of the conical cover body is provided with a plurality of annularly-arranged anti-abrasion angle irons (17), and one side of each anti-abrasion angle iron (17) facing the filter cloth (12) is a circular arc curved surface.

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