CN218358449U

CN218358449U - Flue gas desulfurization device with waste heat utilization function

Info

Publication number: CN218358449U
Application number: CN202222852199.3U
Authority: CN
Inventors: 孟洁扬; 焦龙洋; 胡曦; 徐迎群; 李莉
Original assignee: Shanghai Boiler Works Co Ltd
Current assignee: Shanghai Boiler Works Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-01-24
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a flue gas desulfurization device with waste heat utilization function, including the reaction box, the top of reaction box is equipped with broken case, be equipped with two inlet pipes between broken case and the reaction box, the front end of reaction box is equipped with the heat conduction case, be equipped with the coiled pipe on the inner wall of heat conduction case, the both ends of coiled pipe are equipped with intake pipe and first outlet duct respectively, the upper end of first outlet duct is equipped with the rose box, the upper end of rose box is equipped with the second outlet duct, the reaction incasement is located to the one end of second outlet duct, be equipped with adsorption apparatus in the rose box. The utility model discloses both can be with the heat conduction in the flue gas to the reaction box in, and then preheat the water in the reaction box, increase the speed of reaction, avoid leading to thermal waste, can carry out broken back batch feed to alkaline material (like quick lime) again, greatly increased to the efficiency that the lime melts, and then greatly increased the efficiency to flue gas desulfurization processing.

Description

Flue gas desulfurization device with waste heat utilization function

Technical Field

The utility model relates to a tower boiler burning flue gas desulfurization technical field specifically is flue gas desulfurization device with waste heat utilization function.

Background

At present, most domestic power plants adopt a low-nitrogen staged combustion technology for reducing the emission of nitrogen oxides, wherein a combustion device comprises a tower boiler, and the tower boiler is a tower-type boiler with a hearth at the lower part and a convection flue at the upper part. A large-capacity (generally more than 300 MW) boiler rarely adopts a full-tower type, but only adopts a half-tower type, namely an air preheater and a draught fan are arranged on the ground of zero meter, when the tower boiler is used, a large amount of sulfur exists in tail gas after combustion due to coal burning, the condition of high-temperature corrosion of a water cooling wall in the boiler is easily caused by the large amount of sulfur, the phenomenon of pipe explosion in the boiler is frequent due to the problem of high-temperature corrosion, the safe and stable operation of the boiler is seriously influenced, and the sulfur-containing gas is discharged into the air and is very easy to cause air pollution, so the sulfur in the gas after combustion of the tower boiler needs to be removed, and a wet flue gas desulfurization method is needed when the sulfur in the gas is removed.

In wet flue gas desulfurization systems, the alkaline solution encounters the flue gas, S02 of which dissolves in the water to form a dilute acid solution, which then undergoes a neutralization reaction with alkaline substances dissolved in the water, the most commonly used alkaline substances for flue gas desulfurization being limestone, quicklime and slaked lime. Limestone is produced in a large quantity and is therefore relatively inexpensive, and both quicklime and slaked lime are produced from limestone by heating. Other basic substances such as sodium carbonate, magnesium carbonate and ammonia are sometimes used. The alkaline material used reacts with S02 in the flue gas to produce a mixture of sulphite and sulphate salts (which may be calcium, sodium, magnesium or ammonium salts depending on the alkaline material used).

At present, the high-temperature flue gas desulfurization device inputs sulfur-containing flue gas into a reaction solution, and then the sulfur-containing flue gas is stirred and mixed by a stirring rod, so that the efficiency of sulfur removal in the flue gas is increased, but the reaction speed is accelerated without utilizing the temperature of the discharged flue gas, and the energy is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flue gas desulfurization device with waste heat utilization function to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: flue gas desulfurization device with waste heat utilization function, including the reaction box, the top of reaction box is equipped with broken case, be equipped with the inlet pipe of two symmetric distributions between broken case and the reaction box, the front end of reaction box is equipped with the heat conduction case, be equipped with the coiled pipe on the inner wall of heat conduction case, the both ends of coiled pipe are equipped with intake pipe and first outlet duct respectively, the upper end of first outlet duct is equipped with the rose box, the upper end of rose box is equipped with the second outlet duct, the one end of second outlet duct is located in the reaction box, be equipped with adsorption equipment in the rose box, broken incasement is equipped with broken mechanism.

In a preferred embodiment: broken mechanism include with the fixed first motor of locating broken case lower extreme, the first pivot of first motor upper end output shaft fixedly connected with, be equipped with two first broken swoves on the outer wall of first pivot, be equipped with the broken sword of two seconds on the inner wall of broken case, be equipped with the commentaries on classics board on the outer wall of first pivot, be equipped with the discharge gate of two symmetric distributions on the wall body of commentaries on classics board, the discharge gate flushes with the upper end of inlet pipe.

In a preferred embodiment: the lower extreme output shaft fixedly connected with first stirring rod of first motor, the second stirring rod of two symmetric distributions of fixedly connected with on the inner wall of reaction box, equal fixedly connected with sprocket on the outer wall of first stirring rod and second stirring rod, two the sprocket passes through chain drive and connects, through the setting of first stirring rod, second stirring rod and chain, increases the speed of flue gas and alkaline liquid reaction, and further increase the efficiency of handling the flue gas.

In a preferred embodiment: the left side of reaction box is equipped with the inlet tube, the slip is equipped with the kickboard on the left side inner wall of reaction box, it is equipped with the second pivot to rotate on the left side inner wall of reaction box, be equipped with the baffle on the outer wall of second pivot, through the setting of inlet tube, kickboard, second pivot and baffle, can in time stop the water injection in the reaction box after the water of injection capacity, greatly increased the convenience of using the device.

In a preferred embodiment: the upper end of baffle is equipped with sealing rubber, be equipped with the torsional spring between second pivot and the reaction box inner wall, be equipped with the outlet duct on the right side wall body of reaction box, through the setting of torsional spring, made things convenient for the reset work of follow-up baffle.

In a preferred embodiment: the adsorption mechanism comprises an activated carbon net which is in sliding connection with the inner wall of the filter box, a bump is arranged at the lower end of the activated carbon net, a second motor is arranged on the outer wall of the filter box, an output shaft at one side of the second motor is rotatably arranged in the filter box, an eccentric wheel is fixedly connected to one side of an output shaft of the second motor, and the activated carbon net can be prevented from being blocked due to the arrangement of the second motor and the eccentric wheel.

In a preferred embodiment: two symmetrically-distributed springs are fixedly connected between the inner walls of the activated carbon net and the filter box, first pumping pumps are arranged on the outer walls of the air inlet pipe, the first air outlet pipe and the second air outlet pipe, and the vibration effect of the activated carbon net is improved through the arrangement of the springs.

In a preferred embodiment: the upper end fixedly connected with support column of two symmetric distributions of reaction box, the upper end of support column is equipped with broken case, the upper end of broken case is equipped with the feed inlet, through the setting of support column, has increased the support effect to broken case.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses a reaction box, broken case, the inlet pipe, the heat conduction case, the coiled pipe, an air inlet pipe, first outlet duct, the second outlet duct, first motor, first pivot, first broken sword, two broken swoves of second, the commentaries on classics board, the setting of discharge gate and outlet duct, both can be with heat conduction to the reaction box in the flue gas, and then preheat the water in the reaction box, increase the speed of reaction, avoid resulting in thermal waste, can carry out broken back batch feeding to alkaline material (like quick lime) again, greatly increased the efficiency that melts to lime, and then greatly increased the efficiency to flue gas desulfurization treatment, the practicality of device has been increased, again through the rose box, activated carbon net, the lug, the setting of second motor and eccentric wheel, both can adsorb the impurity in the flue gas, can avoid activated carbon net to take place to block up again after adsorbing impurity.

2. The utility model discloses a setting of inlet tube, kickboard, second pivot and baffle can be in time stop the water injection in time in the reaction box after the water of injection capacity, greatly increased to the convenience that the device used, through the setting of first stirring rod, second stirring rod and chain again, increase the speed of flue gas and alkaline liquid reaction, further increase the efficiency of handling the flue gas.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an overall front view structure diagram of the present invention;

FIG. 2 is a schematic sectional view of the whole front view of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;

FIG. 4 is a schematic view of the inside of the filtering box of the present invention;

FIG. 5 is a schematic view of the interior of the heat conduction box according to the present invention;

FIG. 6 is a schematic view of the structure of the rotating plate of the present invention;

FIG. 7 is a schematic cross-sectional view of the turntable of the present invention;

in the figure: 1. a reaction box; 2. a crushing box; 3. a feed pipe; 4. a heat conducting box; 5. a serpentine tube; 6. an air inlet pipe; 7. a first outlet pipe; 8. a filter box; 9. a second outlet pipe; 10. a first motor; 11. a first rotating shaft; 12. a first crushing cutter; 13. a second crushing cutter; 14. rotating the plate; 15. a discharge port; 16. a first stirring rod; 17. a second stirring rod; 18. a chain; 19. a water inlet pipe; 20. a floating plate; 21. a second rotating shaft; 22. a baffle plate; 23. an air outlet pipe; 24. an activated carbon mesh; 25. a bump; 26. a second motor; 27. an eccentric wheel.

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. 1-7, the present invention provides a technical solution: flue gas desulfurization device with waste heat utilization function, including reaction box 1, the top of reaction box 1 is equipped with broken case 2, be equipped with two symmetric distributions's inlet pipe 3 between broken case 2 and the reaction box 1, the front end of reaction box 1 is equipped with heat conduction box 4, be equipped with coiled pipe 5 on heat conduction box 4's the inner wall, the both ends of coiled pipe 5 are equipped with intake pipe 6 and first outlet duct 7 respectively, the upper end of first outlet duct 7 is equipped with rose box 8, rose box 8's upper end is equipped with second outlet duct 9, the one end of second outlet duct 9 is located in reaction box 1, be equipped with adsorption apparatus in rose box 8, be equipped with broken mechanism in broken case 2, broken mechanism includes with the first motor 10 of fixed locating broken case 2 lower extreme, first motor 10 upper end output shaft fixedly connected with first pivot 11, be equipped with two first broken sword 12 on first pivot 11's the outer wall, be equipped with two second broken sword 13 on broken case 2's the inner wall, be equipped with swivel plate 14 on the outer wall of first pivot 11, be equipped with two symmetrical distributions on the swivel plate 14 on the outer wall body 15 of the fixed distribution of the reaction box 15, the reaction rod 15 of the fixed bar of the reaction rod 15, the speed of the reaction rod 16 is connected with the reaction rod through the speed chain wheel 16, the reaction rod 16, the speed of the reaction rod is connected with the reaction rod on the inlet pipe 17, the speed chain wheel 16, the reaction rod 17, the speed of the first motor 16, the reaction rod is increased on the first motor 16, the stirring rod 16, the sliding of the left side inner wall of reaction box 1 is equipped with kickboard 20, it is equipped with second pivot 21 to rotate on the left side inner wall of reaction box 1, be equipped with baffle 22 on the outer wall of second pivot 21, through the setting of inlet tube 19, kickboard 20, second pivot 21 and baffle 22, can stop the water injection in time in the reaction box 1 automatic after the water of injection capacity in time, greatly increased the convenience to the device use, the upper end of baffle 22 is equipped with sealing rubber, be equipped with the torsional spring between second pivot 21 and the reaction box 1 inner wall, be equipped with outlet duct 23 on the right side wall body of reaction box 1, through the setting of torsional spring, made things convenient for follow-up baffle 22's reset work, adsorption apparatus includes the active carbon net 24 with 8 inner wall sliding connection of rose box, the lower extreme of active carbon net 24 is equipped with lug 25, be equipped with second motor 26 on the outer wall of rose box 8, in filter tank 8 is located in the rotation of one side output shaft of second motor 26, one side fixedly connected with eccentric wheel 27 of second motor 26 output shaft, through the setting of second motor 26 and eccentric wheel 27, can avoid causing the jam of active carbon net 24, the spring of two symmetric distributions of fixedly connected with between the inner wall of active carbon net 24 and filter tank 8, all be equipped with first pump on the outer wall of intake pipe 6, first outlet duct 7 and second outlet duct 9, through the setting of spring, increased the vibrations effect of active carbon net 24, the support column of two symmetric distributions of upper end fixedly connected with of reaction box 1, the upper end of support column is equipped with broken case 2, the upper end of broken case 2 is equipped with the feed inlet, through the setting of support column, has increased the supporting effect to broken case 2.

The utility model discloses a theory of operation: when the quick lime crusher is used, water is firstly injected into a reaction box 1 through a water inlet pipe 19, then the floating plate 20 moves upwards along with the increase of the water amount, then the baffle plate 22 closes the water inlet pipe 19 under the action of the floating plate 20, so that the continuous injection of water flow can be avoided, then quick lime is put into a crushing box 2 through a feed inlet, then a first motor 10 is started, a first rotating shaft 11 is driven to rotate along with the starting of the first motor 10, the first rotating shaft 11 rotates to drive a first crushing knife 12 to rotate, the quick lime is further crushed through a second crushing knife 13 to increase the speed of the quick lime melted in water, meanwhile, the first rotating shaft 11 drives a rotating plate 14 to rotate, when a discharge outlet 15 is aligned with the vertical position of the feed inlet pipe 3, the quick lime falls into the reaction box 1 through the feed inlet pipe 3, at the moment, the first stirring rod 16 is driven to rotate along with the starting of the first motor 10, and then drive the second stirring rod 17 to rotate through sprocket and chain 18, increased the reaction rate of follow-up alkaline liquid and flue gas, increased the desorption speed to sulphur in the flue gas, then start the suction pump of intake pipe 6, the flue gas pours into the coiled pipe 5 into through intake pipe 6, the heat is passed to the reaction box 1 in through coiled pipe 5 and heat conduction case 4, then preheat the alkaline liquid in the reaction box 1, later the flue gas gets into the rose box 8 through first outlet duct 7, after being adsorbed the impurity in the flue gas by activated carbon net 24, the flue gas gets into the reaction box 1 through second outlet duct 9 and is desulfurized, when activated carbon net 24 adsorbs impurity, start second motor 26, and then eccentric wheel 27 begins to rotate, thereby make activated carbon net 24 shake under the effect of lug 25 and spring from top to bottom, and then shake the impurity, avoid impurity to shake activated carbon net 24 jam.

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.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Flue gas desulfurization device with waste heat utilization function, including reaction box (1), its characterized in that: the top of reaction box (1) is equipped with broken case (2), be equipped with inlet pipe (3) of two symmetric distributions between broken case (2) and reaction box (1), the front end of reaction box (1) is equipped with heat conduction case (4), be equipped with coiled pipe (5) on the inner wall of heat conduction case (4), the both ends of coiled pipe (5) are equipped with intake pipe (6) and first outlet duct (7) respectively, the upper end of first outlet duct (7) is equipped with rose box (8), the upper end of rose box (8) is equipped with second outlet duct (9), the one end of second outlet duct (9) is located in reaction box (1), be equipped with adsorption apparatus in rose box (8), be equipped with broken mechanism in broken case (2).

2. The flue gas desulfurization device with a waste heat utilization function according to claim 1, characterized in that: broken mechanism includes and fixes first motor (10) of locating broken case (2) lower extreme, first motor (10) upper end output shaft fixedly connected with first pivot (11), be equipped with two first broken sword (12) on the outer wall of first pivot (11), be equipped with two broken sword of second (13) on the inner wall of broken case (2), be equipped with on the outer wall of first pivot (11) and change board (14), be equipped with discharge gate (15) of two symmetric distributions on the wall body of commentaries on classics board (14), discharge gate (15) flush with the upper end of inlet pipe (3).

3. The flue gas desulfurization device with a waste heat utilization function according to claim 2, characterized in that: the lower end output shaft of first motor (10) fixedly connected with first stirring rod (16), fixedly connected with two symmetric distribution's second stirring rod (17) on the inner wall of reaction box (1), equal fixedly connected with sprocket on the outer wall of first stirring rod (16) and second stirring rod (17), two the sprocket passes through chain (18) transmission and connects.

4. The flue gas desulfurization device with a waste heat utilization function according to claim 1, characterized in that: the left side of reaction box (1) is equipped with inlet tube (19), it is equipped with kickboard (20) to slide on the left side inner wall of reaction box (1), it is equipped with second pivot (21) to rotate on the left side inner wall of reaction box (1), be equipped with baffle (22) on the outer wall of second pivot (21).

5. The flue gas desulfurization device with a waste heat utilization function according to claim 4, characterized in that: the upper end of baffle (22) is equipped with sealing rubber, be equipped with the torsional spring between second pivot (21) and reaction box (1) inner wall, be equipped with outlet duct (23) on the right side wall body of reaction box (1).

6. The flue gas desulfurization device with a waste heat utilization function according to claim 1, characterized in that: adsorption equipment includes activated carbon net (24) with rose box (8) inner wall sliding connection, the lower extreme of activated carbon net (24) is equipped with lug (25), be equipped with second motor (26) on the outer wall of rose box (8), one side output shaft of second motor (26) rotates and locates in rose box (8), one side fixedly connected with eccentric wheel (27) of second motor (26) output shaft.

7. The flue gas desulfurization device with a waste heat utilization function according to claim 6, characterized in that: two symmetrically-distributed springs are fixedly connected between the inner walls of the activated carbon net (24) and the filter box (8), and first pumping pumps are arranged on the outer walls of the air inlet pipe (6), the first air outlet pipe (7) and the second air outlet pipe (9).

8. The flue gas desulfurization apparatus with a waste heat utilization function according to claim 7, characterized in that: the upper end fixedly connected with of reaction box (1) two symmetric distribution's support column, the upper end of support column is equipped with broken case (2), the upper end of broken case (2) is equipped with the feed inlet.