CN211011343U

CN211011343U - Circulating fluidized bed boiler bottom ash desulphurization unit

Info

Publication number: CN211011343U
Application number: CN201922167782.9U
Authority: CN
Inventors: 赵义学; 黄亚洲; 王开晶
Original assignee: Datang Yuncheng Power Generation Co Ltd
Current assignee: Datang Yuncheng Power Generation Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-07-14
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a circulating fluidized bed boiler bottom ash desulfurization device, which comprises a feed pipe, a water pipe, a cooling box, a shell, a crushing box, a crushing roller and a motor, wherein the cooling box is fixedly connected in the shell, the water pipe is arranged at the top end inside the shell, a plurality of spray heads are evenly arranged on the water pipe, one end of the feed pipe is communicated with the inside of the cooling box, the other end of the cooling box is connected with the inside of the boiler body, the bottom end of the inside of the cooling box is connected with the inside of the crushing box through a conveying pipe, two crushing rollers are arranged, the two crushing rollers are connected with the position close to the top end inside the crushing box in a parallel rotating mode, the crushing rollers are matched with a motor to crush the blocks in the bottom ash, then the water vapor enters the activation box and is conveyed to the activation box through the water vapor in the shell, and the water vapor can be used as an activating agent to activate the unreacted desulfurizer product components of the bottom ash into a secondary desulfurizer to be recycled.

Description

Circulating fluidized bed boiler bottom ash desulphurization unit

Technical Field

The utility model relates to a circulating fluidized bed boiler desulfurization equipment technical field specifically is a circulating fluidized bed boiler bottom ash desulphurization unit.

Background

The circulating fluidized bed boiler adopts a clean coal combustion technology with the highest industrialization degree, adopts fluidized combustion, has the main structure comprising two parts of a combustion chamber (comprising a dense-phase zone and a dilute-phase zone) and a circulating return furnace (comprising a high-temperature gas-solid separator and a return system), has the biggest difference with the bubbling fluidized bed combustion technology that the running wind speed is high, strengthens heterogeneous reaction processes such as combustion, desulfurization and the like, can expand the boiler capacity to a large capacity (600MW or above grade) acceptable by the power industry, well solves the basic problems such as heat, mechanics, materials and the like and the engineering problems such as expansion, abrasion, over temperature and the like, and becomes an advanced technology for utilizing energy sources of difficult-to-burn solid fuels (such as coal gangue, oil shale, municipal refuse, sludge and other wastes);

the circulating fluidized bed has the advantages that the pollutant removal can be realized by adding a desulfurizer into the boiler, and a large amount of unreacted desulfurizer products exist in the boiler bottom ash, so that the manufacturing cost and the operation cost are increased;

in summary, the present application provides a circulating fluidized bed boiler bottom ash desulfurization device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circulating fluidized bed boiler bottom ash desulphurization unit to solve the problem that proposes in the above-mentioned background art, the utility model discloses convenient to use, easy operation, systematic height, the practicality is strong.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a circulating fluidized bed boiler bottom ash desulphurization unit, includes inlet pipe, water pipe, cooler bin, casing, broken case, crushing roller and motor, fixedly connected with cooler bin in the casing, the water pipe sets up in the inside top of casing, evenly be provided with a plurality of shower nozzle on the water pipe, the one end of inlet pipe communicates with each other with the inside of cooler bin, and the other end and this internal connection of boiler, the inside bottom of cooler bin is through conveying pipe through broken incasement connection, crushing roller is equipped with two, two crushing roller rotates side by side and connects in the inside of broken case and be close to the position on top, the one end of crushing roller all is provided with the gear, and two gear intermeshing, motor fixed mounting and broken incasement are outer, just the output shaft of motor passes through bull stick and crushing roller fixed connection.

Preferably, the crushing device further comprises an activation tank which is communicated with the interior of the crushing tank through a conveying pipe.

Preferably, still include filter plate, slide rail, draw runner, worm wheel and worm, worm fixed connection is in the output shaft of motor, worm wheel and worm phase-match, the bottom fixedly connected with rotary column of worm wheel, the one end fixedly connected with carousel of rotary column, the eccentric department fixedly connected with round pin axle of carousel, round pin axle rotates with the one end of connecting rod to be connected, the other end of connecting rod is articulated with the filter plate through lug and pivot, the both sides of filter plate are provided with the draw runner, the inside of broken case is close to the position both sides of bottom and is provided with the slide rail, the filter plate passes through draw runner and slide rail sliding connection in the inside of broken case.

Preferably, the shell is communicated with the inside of the activation box through a gas pipe.

Preferably, a valve is arranged on the conveying pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up the inlet pipe, a water pipe, the cooler bin, a housing, broken case, the activation case, smash mutually supporting of roller and motor, at first with fuel and desulfurizer respectively or mix and add the burning in the circulating fluidized bed boiler, make fuel carry out the interior desulfurization reaction with the desulfurizer simultaneously of burning in the circulating fluidized bed boiler, then cool off the end ash that reacts out through the cooler bin, cooperation through smashing roller and motor can smash through the bulk with in the end ash, then carry out the filtering through the impurity of filter plate in with the end ash, then get into the activation case, vapor conveying in the activation case through the casing, vapor can regard as the activator to the complete desulfurizer composition of non-reaction of end ash by the activation become secondary desulfurizer and can circulate and utilize.

Drawings

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

FIG. 2 is a schematic structural view of a crushing box according to the present invention;

fig. 3 is a schematic structural diagram of the middle filter plate of the present invention.

Reference numerals: 1. a feed pipe; 2. a water pipe; 3. a spray head; 4. a cooling tank; 5. a housing; 6. a transfer tube; 7. a crushing box; 8. a valve; 9. an activation tank; 10. a crushing roller; 11. a gear; 12. a motor; 13. a worm; 14. a worm gear; 15. a rotating rod; 16. turning the column; 17. a turntable; 18. a pin shaft; 19. a connecting rod; 20. filtering the plate; 21. a slide rail; 22. and (4) a slide bar.

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 efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a circulating fluidized bed boiler bottom ash desulphurization unit comprises an inlet pipe 1, a water pipe 2, a cooling box 4, a shell 5, a crushing box 7, crushing rollers 10 and a motor 12, wherein the cooling box 4 is fixedly connected in the shell 5, the water pipe 2 is arranged at the inner top end of the shell 5, a plurality of spray heads 3 are evenly arranged on the water pipe 2, one end of the inlet pipe 1 is communicated with the inside of the cooling box 4, the other end of the inlet pipe is connected with the boiler body, the inner bottom end of the cooling box 4 is connected with the crushing box 7 through a conveying pipe 6, the crushing rollers 10 are provided with two crushing rollers 10 which are connected with the position close to the top end inside the crushing box 7 in a parallel rotating manner, one end of each crushing roller 10 is provided with a gear 11 and two gears 11 are mutually meshed, the motor 12 is fixedly arranged outside the crushing box 7, and the output shaft of the motor 12 is fixedly connected with the crushing rollers 10 through a rotating rod 15, the grinding roller 10 is driven to rotate by the rotation of an output shaft of the motor 12;

the device also comprises an activation box 9, wherein the activation box 9 is communicated with the interior of the crushing box 7 through a conveying pipe 6 and is used for conveying the treated bottom ash into the activation box 9;

the device comprises a crushing box 7 and is characterized by further comprising a filter plate 20, slide rails 21, a slide bar 22, a worm wheel 14 and a worm 13, wherein the worm 13 is fixedly connected to an output shaft of a motor 12, the worm wheel 14 is matched with the worm 13, the bottom end of the worm wheel is fixedly connected with a rotary column 16, one end of the rotary column 16 is fixedly connected with a rotary disc 17, an eccentric part of the rotary disc 17 is fixedly connected with a pin shaft 18, the pin shaft 18 is rotatably connected with one end of a connecting rod 19, the other end of the connecting rod 19 is hinged with the filter plate 20 through a lifting lug and a rotating shaft, the slide bars 22 are arranged on two sides of the filter plate 20, the slide rails 21 are arranged on two sides of the position, close to the bottom end, in the crushing box 7, the filter plate 20 is slidably connected with the;

the inside of the shell 5 is communicated with the inside of the activation box 9 through a gas pipe, and the water vapor in the shell 5 is conveyed into the activation box 9 through the gas pipe;

a valve 8 is arranged on the conveying pipe 6;

the working process is as follows: when the device is used, fuel and a desulfurizer are added into a circulating fluidized bed boiler respectively or in a mixed manner for combustion, so that the fuel and the desulfurizer perform in-boiler desulfurization reaction while being combusted in the circulating fluidized bed boiler, bottom ash after combustion returns to the bottom end inside the circulating fluidized bed boiler and then enters a cooling tank 4 through a feed pipe 1, then an external water source is pumped into a water pipe 2 through a water pump and then is sprayed out from a spray head 3, a large amount of cooling water sprayed out of the spray head 3 cools the bottom ash inside the cooling tank 4, after the cooling is finished, a valve 8 is opened, and the bottom ash is conveyed into a crushing tank 7 through a conveying pipe 6;

then starting a motor 12, rotating an output shaft of the motor 12 to drive a worm 13 and a rotating rod 15 to rotate, rotating the rotating rod 15 to drive a gear 11 to rotate, mutually meshing the two gears 11 to drive two crushing rollers 10 to rotate oppositely to crush larger blocks in bottom ash, feeding the crushed bottom ash onto a filter plate 20, driving a worm wheel 14 to rotate by the worm 13, driving a rotary table 17 to rotate by the worm wheel 14 through a rotary column 16, driving a pin shaft 18 to rotate by the rotary table 17, driving a connecting rod 19 to reciprocate by the pin shaft 18, and driving the filter plate 20 to sieve and filter out impurities by reciprocating the filter plate 19 in a crushing box 7 through a sliding strip 22 and a sliding chute;

because the desulfurizer is selected as a calcium desulfurizer, the bottom ash often contains incompletely reacted CaO, CaCO3, CaS and the like;

the screened bottom ash enters an activation box 9, water vapor used for cooling in the shell 5 is conveyed to the activation box 9 through a gas conveying pipe to be fully reacted with the bottom ash, the water vapor can be used as an activating agent, and the desulfurizer component of the bottom ash is activated into a secondary desulfurizer under the action of the activating agent to be recycled.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

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 circulating fluidized bed boiler bottom ash desulphurization unit which characterized in that: comprises an inlet pipe (1), a water pipe (2), a cooling box (4), a shell (5), a crushing box (7), crushing rollers (10) and a motor (12), wherein the cooling box (4) is fixedly connected in the shell (5), the water pipe (2) is arranged on the top end of the shell (5), a plurality of spray heads (3) are uniformly arranged on the water pipe (2), one end of the inlet pipe (1) is communicated with the inside of the cooling box (4), the other end of the inlet pipe is connected with the inside of a boiler body, the bottom end of the inside of the cooling box (4) is connected with the inside of the crushing box (7) through a conveying pipe (6), the crushing rollers (10) are provided with two crushing rollers (10) which are connected with the inside of the crushing box (7) in a parallel rotating manner and are close to the top end, one end of each crushing roller (10) is provided with a gear (11), and the gears (11) are mutually meshed, the motor (12) is fixedly arranged outside the crushing box (7), and an output shaft of the motor (12) is fixedly connected with the crushing roller (10) through a rotating rod (15).

2. The circulating fluidized bed boiler bottom ash desulfurization device according to claim 1, characterized in that: the crushing device also comprises an activation box (9), wherein the activation box (9) is communicated with the interior of the crushing box (7) through a conveying pipe (6).

3. The circulating fluidized bed boiler bottom ash desulfurization device according to claim 1, characterized in that: also comprises a filter plate (20), a slide rail (21), a slide bar (22), a worm wheel (14) and a worm (13), the worm (13) is fixedly connected with an output shaft of the motor (12), the worm wheel (14) is matched with the worm (13), the bottom end of the worm wheel is fixedly connected with a rotary column (16), one end of the rotary column (16) is fixedly connected with a rotary table (17), a pin shaft (18) is fixedly connected at the eccentric position of the turntable (17), the pin shaft (18) is rotatably connected with one end of a connecting rod (19), the other end of the connecting rod (19) is hinged with the filter plate (20) through a lifting lug and a rotating shaft, sliding strips (22) are arranged on two sides of the filter plate (20), sliding rails (21) are arranged on two sides of the position, close to the bottom end, inside the crushing box (7), the filter plate (20) is connected to the inside of the crushing box (7) in a sliding mode through a sliding strip (22) and a sliding rail (21).

4. The circulating fluidized bed boiler bottom ash desulfurization device according to claim 1, characterized in that: the interior of the shell (5) is communicated with the interior of the activation box (9) through a gas transmission pipe.

5. The circulating fluidized bed boiler bottom ash desulfurization device according to claim 1, characterized in that: and a valve (8) is arranged on the conveying pipe (6).