CN211098428U

CN211098428U - Desulfurization absorption tower

Info

Publication number: CN211098428U
Application number: CN201921896478.1U
Authority: CN
Inventors: 袁世伟; 朱建华; 任加权
Original assignee: Hangzhou Zhixing Thermal Power Co ltd
Current assignee: Hangzhou Zhixing Thermal Power Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-28
Anticipated expiration: 2029-11-05

Abstract

The utility model belongs to the technical field of flue gas desulfurization technique and specifically relates to a desulfurization absorption tower is related to. There is impurity entering desulfurization absorption tower among the prior art, blocks up spray set easily, causes the damage to equipment and pipeline in the desulfurization absorption tower, and this scheme includes the tower body, is equipped with intake pipe and outlet duct on the tower body, and the tower body bottom is equipped with the reaction tank, is equipped with the reaction liquid in the reaction tank, during the intake pipe inserted the reaction liquid, the reaction tank bottom was equipped with the drain pipe, is equipped with the filter equipment who is used for filtering impurity on the drain pipe and provides the circulating pump of power of flowing, and the export of circulating pump is equipped with the back flow of being connected with the reaction tank, and filter equipment is equipped with coarse filtration net and thin filter screen including fixing the rose box on the drain pipe in the rose box, and coarse filtration net and thin filter screen arrange. This scheme can carry out filtration treatment to the impurity that gets into the desulfurization absorption tower, reduces equipment and pipeline that impurity caused the damage in to the desulfurization absorption tower.

Description

Desulfurization absorption tower

Technical Field

The utility model belongs to the technical field of flue gas desulfurization technique and specifically relates to a desulfurization absorption tower is related to.

Background

According to the requirements of the national environmental protection department, enterprises such as thermal power plants which do not reach the emission standard need to treat the emission system, a large amount of flue gas can be generated in the boiler combustion process of the thermal power plant, and the flue gas contains a large amount of oxysulfide which pollutes the environment, so that a desulfurizing device for absorbing the oxysulfide in the flue gas needs to be arranged, and the content of the oxysulfide when the flue gas is emitted to the atmosphere is reduced.

The current chinese patent with publication number CN208115487U discloses a desulfurization absorption tower, which comprises a tower body, tower body one side is equipped with the flue gas inlet, be equipped with spray set in advance in the flue gas inlet, the tower body top is equipped with exhanst gas outlet, from supreme guiding device that is equipped with down between flue gas inlet and the exhanst gas outlet in proper order, spray set and defogging device, guiding device is including setting up the first water conservancy diversion unit in flue gas inlet department to and set up the second water conservancy diversion unit in first water conservancy diversion unit top perpendicularly, the tower body bottom is equipped with the absorption cell, contain the absorption liquid in the absorption cell.

But not carry out impurity removal processing to the flue gas that gets into the desulfurizing tower among the above-mentioned prior art, make impurity such as dust that mix with in the flue gas get into the desulfurizing tower, even carry out the filtration treatment of flue gas in advance, also can not avoid having impurity entering desulfurization absorption tower, block up spray set easily, cause the damage to equipment and pipeline in the desulfurization absorption tower, the event needs to design a desulfurization absorption tower, can carry out filtration treatment to the impurity that gets into the desulfurization absorption tower, it causes the damage to equipment and the pipeline in the desulfurization absorption tower to reduce impurity.

Disclosure of Invention

The utility model aims at providing a desulfurization absorption tower can carry out filtration treatment to the impurity that gets into the desulfurization absorption tower, reduces equipment and pipeline that impurity caused the damage in to the desulfurization absorption tower.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a desulfurization absorption tower, includes the tower body, be equipped with intake pipe and outlet duct on the tower body, the tower body bottom is equipped with the reaction tank, be equipped with reaction liquid in the reaction tank, the intake pipe inserts in the reaction liquid, the reaction tank bottom is equipped with the drain pipe, be equipped with the circulating pump that is used for filtering impurity's filter equipment and provides the power of flow on the drain pipe, the export of circulating pump is equipped with the back flow of being connected with the reaction tank, filter equipment is including fixing the rose box on the drain pipe, be equipped with coarse filtration net and thin filter screen in the rose box, coarse filtration net and thin filter screen arrange the setting in proper order along the liquid flow direction in the rose box.

By adopting the technical scheme, the air inlet pipe is inserted into the reaction liquid, so that the flue gas firstly reacts with the reaction liquid in the reaction tank before entering the desulfurizing tower, thereby separating solid impurities such as dust and the like mixed in the flue gas through the reaction liquid, and washing the impurities in the flue gas out of the reaction liquid;

through starting the circulating pump, make the reaction liquid in the reaction tank get up through drain pipe and back flow circulation, coarse filtration net and thin filter screen carry out filtration treatment to the impurity in the reaction liquid, reduce equipment and pipeline that impurity caused the damage in to the desulfurization absorption tower.

The utility model discloses further set up to: the bottom of coarse filtration net and thin filter screen is the fixedly connected with bottom plate all, be fixed with two curb plates on the bottom plate, two the curb plate sets up between coarse filtration net and thin filter screen, coarse filtration net, thin filter screen, bottom plate and two curb plates enclose into the collection chamber that is used for collecting impurity, the one end that thin filter screen was kept away from to the bottom plate is fixed with the extension plate, the extension plate is parallel with the bottom plate plane, the marginal fixedly connected with baffle of extension plate, the top opening setting of rose box, the top of rose box is equipped with the lid, be equipped with between rose box and the lid and be used for locking the locking subassembly of lid locking on the rose box.

By adopting the technical scheme, the collecting cavity provides a space for temporarily storing impurities, the bottom plate provides a bearing surface for the impurities blocked by the fine filter screen, and the side plates are used for reducing the falling of the impurities from the bottom plate; the extension plate provides a bearing surface for impurities blocked by the coarse filter screen, so that the deposition of the impurities in the filter box is reduced, the impurities are more easily taken out of the filter box, and the situation that the impurities fall off from the extension plate in the cleaning process is reduced due to the arrangement of the baffle plate; the filter box top end opening sets up to the convenient impurity clearance that will collect goes out the filter box, and the lid is used for under normal work filtration state, provides a sealed safe environment of filter box, and the locking subassembly realizes the firm locking of lid on the filter box, and the reduction takes place at the condition that normal during operation lid breaks away from.

The utility model discloses further set up to: the locking assembly comprises a snapping block which is rotatably connected to the outer wall of the filter box, a lock catch is rotatably connected to the snapping block, and a lock hook which is matched and fastened with the lock catch is arranged on the cover body.

Through adopting above-mentioned technical scheme, the piece is broken off with the fingers and thumb in the operation and rotates, and the operation hasp rotates, makes the latch hook lock on hasp and the lid, will break off with the fingers and thumb the piece and rotate to initial position to make between hasp and the latch hook the straining, realize the locking between lid and the rose box, simple structure, convenient operation.

The utility model discloses further set up to: two be fixed with the spacing piece on the curb plate, the spacing groove has been seted up on the inner wall of rose box, spacing piece and spacing groove sliding fit.

Through adopting above-mentioned technical scheme, the setting of stopper and spacing groove makes the curb plate have a limiting displacement in the rose box, and the curb plate all has connected with coarse filtration net and thin filter screen, so have limiting displacement to coarse filtration net and thin filter screen, and coarse filtration net and thin filter screen can bear the impact force of liquid flow, and limiting displacement reduces the condition that coarse filtration net and thin filter screen took place to remove along the liquid flow direction in the rose box, make placing of coarse filtration net and thin filter screen in the rose box more stable.

The utility model discloses further set up to: and a sealing piece used for plugging a gap between the cover body and the filter box is arranged at the top end of the filter box.

Through adopting above-mentioned technical scheme, the sealing member is with the gap shutoff between lid and the rose box to improve the sealed effect of lid to the rose box, reduce the condition emergence that reaction liquid spilled from the gap, improve equipment's security.

The utility model discloses further set up to: and a lifting rod which is convenient for lifting the collecting cavity out of the filter box is arranged between the two side plates.

Through adopting above-mentioned technical scheme, carry the pull rod and make things convenient for personnel will collect the chamber and carry out from the rose box, make personnel have suitable application of force position, improve the high efficiency of operation.

The utility model discloses further set up to: the liquid outlet pipe is provided with a front stop valve, a rear stop valve is arranged between the filter box and the circulating pump, the bottom end of the filter box is provided with a liquid discharge pipe, and the liquid discharge pipe is provided with a liquid discharge valve.

Through adopting above-mentioned technical scheme, when the lid is opened to needs and the clearance of carrying out impurity in the rose box, need be with the reaction liquid evacuation in the rose box, through stop valve and back stop valve before closing, open the flowing back valve and carry out the evacuation of reaction liquid in the rose box, reaction liquid is strong alkaline liquid, and the evacuation can reduce personnel injured's condition when carrying out impurity clearance in advance and takes place, and the evacuation rose box also makes things convenient for personnel to carry out the clearance of impurity.

The utility model discloses further set up to: the reaction tank diapire sets up for conical slope, the least significant end and the drain pipe fixed connection of reaction tank diapire.

Through adopting above-mentioned technical scheme, the slope of reaction tank bottom wall sets up, makes the impurity that falls on the reaction tank bottom wall slide to the least significant end of diapire because of the action of gravity to discharge the reaction tank as early as possible through the drain pipe, reduce the bottom deposit of impurity at the reaction tank, improve the treatment effect of impurity in the reaction tank.

The utility model discloses further set up to: one end of the air inlet pipe inserted into the reaction liquid is provided with an air inlet head for preventing reverse suction, and the air inlet head is arranged in a funnel shape in an inverted mode.

Through adopting above-mentioned technical scheme, the head of admitting air can prevent that the intake pipe from carrying out the suck-back to the reaction liquid in the reaction tank, after to flue gas desulfurization, remaining flue gas can be because steam rises and reverse flow in the intake pipe, because the effect of pressure, pressure in the desulfurizing tower can be to the intake pipe with the reaction liquid in the reaction tank, reaction liquid in the inversion funnel rises and enters into the toper top, the liquid level decline of the outside reaction liquid of inversion funnel, when the outside reaction liquid level of inversion funnel reduces to the horizontal bottom with the inversion funnel and separates, the reaction liquid in the toper top of inversion funnel is by falling back to the reaction tank again because self gravity, thereby realize preventing suck-back function.

To sum up, the utility model discloses a beneficial technological effect does:

1. the gas inlet pipe is inserted into the reaction liquid, so that the flue gas firstly reacts with the reaction liquid in the reaction tank before entering the desulfurizing tower, thereby separating solid impurities such as dust and the like in the flue gas through the reaction liquid, and washing the impurities in the flue gas out of the reaction liquid;

2. by starting the circulating pump, the reaction liquid in the reaction tank circularly flows through the liquid outlet pipe and the return pipe, and the coarse filter screen and the fine filter screen filter impurities in the reaction liquid, so that the damage of the impurities to equipment and pipelines in the desulfurization absorption tower is reduced;

3. the collecting cavity provides a space for temporarily storing impurities, the bottom plate provides a bearing surface for the impurities blocked by the fine filter screen, and the side plates are used for reducing the falling of the impurities from the bottom plate; the extension plate provides a bearing surface for impurities blocked by the coarse filter screen, so that the deposition of the impurities in the filter box is reduced, the impurities are more easily taken out of the filter box, and the situation that the impurities fall off from the extension plate in the cleaning process is reduced due to the arrangement of the baffle plate; the filter box top end opening sets up to the convenient impurity clearance that will collect goes out the filter box, and the lid is used for under normal work filtration state, provides a sealed safe environment of filter box, and the locking subassembly realizes the firm locking of lid on the filter box, and the reduction takes place at the condition that normal during operation lid breaks away from.

Drawings

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

fig. 2 is a schematic sectional view of the tower body;

FIG. 3 is a schematic sectional view of the filter device;

FIG. 4 is a schematic view of the collection chamber configuration;

FIG. 5 is a schematic view of the structure of the filter device;

fig. 6 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a tower body; 2. an air inlet pipe; 3. an air outlet pipe; 4. a reaction tank; 5. an air inlet head; 6. a liquid outlet pipe; 7. a front stop valve; 8. a filtration device; 9. a rear stop valve; 10. a circulation pump; 11. a return pipe; 12. a filter box; 13. a base plate; 14. a coarse filter screen; 15. a fine filter screen; 16. a side plate; 17. a collection chamber; 18. an extension plate; 19. a baffle plate; 20. a cover body; 21. a locking assembly; 22. breaking off the blocks; 23. locking; 24. a latch hook; 25. a limiting block; 26. a limiting groove; 27. a seal member; 28. lifting a pull rod; 29. a liquid discharge pipe; 30. and a drain valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a desulfurization absorption tower comprises a tower body 1, wherein an air inlet pipe 2 and an air outlet pipe 3 are fixedly connected to the side wall of the tower body 1, the air inlet pipe 2 is arranged below the tower body 1, and the air outlet pipe 3 is arranged above the tower body 1. The bottom end in the tower body 1 is a reaction tank 4, and reaction liquid is placed in the reaction tank 4. One end fixedly connected with inlet head 5 of intake pipe 2 in tower body 1, inlet head 5 inserts in the reaction liquid, makes the flue gas before getting into the desulfurizing tower, earlier with the reaction liquid reaction in the reaction tank 4 to solid impurity such as the dust that mix with in the flue gas separates through the reaction liquid, makes impurity in the flue gas washed in the reaction liquid. The air inlet head 5 is arranged in an inverted funnel shape, so that the reaction liquid can be prevented from flowing back through the air inlet pipe 2.

The diapire of reaction tank 4 sets up for conical slope, makes the impurity that falls on 4 diapalls of reaction tank slide to the least significant end of diapire because of the action of gravity, and the least significant end fixedly connected with drain pipe 6 of 4 diapalls of reaction tank, so impurity passes through drain pipe 6 and discharges reaction tank 4 as early as possible, reduces the bottom deposit of impurity at reaction tank 4.

The liquid outlet pipe 6 is sequentially provided with a front stop valve 7, a filter device 8, a rear stop valve 9, a circulating pump 10 and a return pipe 11 along the liquid flowing direction, and the return pipe 11 is fixedly connected with one end of the reaction tank 4. The filtering device 8 is used for filtering impurities in the reaction liquid, and the circulating pump 10 is used for providing power for the flow of the reaction liquid.

As shown in fig. 1 and 3, the filtering device 8 includes a filtering box 12 fixed on the liquid outlet pipe 6, a bottom plate 13 is placed in the filtering box 12, a coarse filtering net 14 and a fine filtering net 15 are fixedly connected to an upper end wall of the bottom plate 13, and the coarse filtering net 14 and the fine filtering net 15 are sequentially arranged on the bottom plate 13 along a liquid flowing direction, so as to perform double filtering on the reaction liquid passing through the filtering box 12. Two side plates 16 (shown in fig. 4) are fixed on the upper end wall of the bottom plate 13, and the two side plates 16 are arranged between the coarse filter screen 14 and the fine filter screen 15. The coarse filter screen 14, the fine filter screen 15, the bottom plate 13 and the two side plates 16 enclose a collection chamber 17 (shown in fig. 4) for collecting impurities. An extension plate 18 is fixedly connected to one end, far away from the fine filter screen 15, of the base plate 13, the plane of the extension plate 18 is parallel to the plane of the base plate 13, and the extension plate 18 provides a bearing surface for impurities blocked by the coarse filter screen 14, so that deposition of the impurities in the filter box 12 is reduced. The edge of the extension plate 18 is fixedly connected with a baffle plate 19, and the baffle plate 19 is used for reducing the occurrence of the situation that impurities fall off from the extension plate 18 in the cleaning process.

The top end of the filter box 12 is provided with an opening, the top end of the filter box 12 is provided with a cover body 20, a locking assembly 21 is arranged between the filter box 12 and the cover body 20, and the locking assembly 21 is used for locking the cover body 20 on the filter box 12.

As shown in fig. 1 and 6, the locking assembly 21 includes two breaking-off blocks 22 rotatably connected to outer walls of two ends of the filter box 12, two locking hooks 23 rotatably connected to both breaking-off blocks 22, and two locking hooks 24 fixedly connected to side walls of two ends of the cover 20, respectively, wherein the locking hooks 24 are used for being engaged with the locking hooks 23. The wrestling block 22 is operated to rotate, the lock catch 23 is buckled with the lock hook 24 on the cover body 20, and the wrestling block 22 is rotated to the initial position, so that the lock catch 23 and the lock hook 24 are fastened, and the cover body 20 and the filter box 12 are locked.

As shown in fig. 4 and 5, the end walls of the two side plates 16 far away from the collecting cavity 17 are fixedly connected with limiting blocks 25, the inner wall of the filter box 12 is provided with two limiting grooves 26, and the limiting blocks 25 are in sliding fit with the limiting grooves 26. The side plate 16 has a limiting effect in the filter box 12, and the side plate 16 is connected with the coarse filter screen 14 and the fine filter screen 15, so that the coarse filter screen 14 and the fine filter screen 15 have the limiting effect, the coarse filter screen 14 and the fine filter screen 15 can bear the impact force of liquid flow, the limiting effect reduces the situation that the coarse filter screen 14 and the fine filter screen 15 move in the filter box 12 along the liquid flow direction, and the coarse filter screen 14 and the fine filter screen 15 are placed more stably in the filter box 12.

The sealing member 27 is fixedly connected to the top end of the filter box 12, and the sealing member 27 is used for sealing the gap between the cover body 20 and the filter box 12, so that the sealing effect of the cover body 20 on the filter box 12 is improved, the leakage of the reaction liquid from the gap is reduced, and the safety of the equipment is improved.

A lifting rod 28 is fixedly connected between the two side plates 16, and the lifting rod 28 enables personnel to have a proper force application part, so that the collecting cavity 17 is conveniently lifted out of the filter box 12, and the operation efficiency is improved.

As shown in fig. 1 and 5, a drain pipe 29 is fixedly connected to the bottom end of the filter box 12, and a drain valve 30 is mounted on the drain pipe 29. When the lid 20 is opened to the needs and the clearance of impurity in the rose box 12 is carried out, need with the reaction liquid evacuation in the rose box 12, through stop valve 7 before closing and back stop valve 9, open flowing back valve 30 and carry out the evacuation of reaction liquid in the rose box 12, reaction liquid is strong alkaline liquid, and the evacuation can reduce personnel and take place in the condition of being injured when carrying out the impurity clearance in advance, and evacuation rose box 12 also makes things convenient for personnel to carry out the clearance of impurity.

The working process is as follows:

opening the front stop valve 7 and the rear stop valve 9, closing the liquid discharge valve 30, introducing flue gas into the desulfurization tower to enable the flue gas to enter the reaction liquid, and starting the circulating pump 10 to filter impurities in the reaction liquid;

when the coarse filter screen 14 and the fine filter screen 15 need to be cleaned, the front stop valve 7 and the rear stop valve 9 are closed, the drain valve 30 is opened to drain the filter box 12 until no liquid flows out of the drain pipe 29, the snapping block 22 is rotated to enable the lock 23 to be separated from the locking hook 24 in a fastening state, the cover body 20 is removed from the top end of the filter screen, and the coarse filter screen 14 and the fine filter screen 15 are taken out of the filter box 12 through the lifting rod 28, so that impurities are cleaned.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a desulfurization absorption tower, includes tower body (1), be equipped with intake pipe (2) and outlet duct (3) on tower body (1), its characterized in that: tower body (1) bottom is equipped with reaction tank (4), be equipped with reaction liquid in reaction tank (4), intake pipe (2) insert in the reaction liquid, reaction tank (4) bottom is equipped with drain pipe (6), be equipped with filter equipment (8) that are used for filtering impurity on drain pipe (6) and provide circulating pump (10) of flow power, the export of circulating pump (10) is equipped with back flow (11) of being connected with reaction tank (4), filter equipment (8) are including fixing rose box (12) on drain pipe (6), be equipped with coarse filtration net (14) and thin filter screen (15) in rose box (12), coarse filtration net (14) and thin filter screen (15) are arranged the setting in proper order in rose box (12) along the liquid flow direction.

2. The desulfurization absorption tower according to claim 1, wherein: the bottom ends of the coarse filter screen (14) and the fine filter screen (15) are fixedly connected with a bottom plate (13), two side plates (16) are fixed on the bottom plate (13), the two side plates (16) are arranged between the coarse filter screen (14) and the fine filter screen (15), the coarse filter screen (14), the fine filter screen (15), the bottom plate (13) and the two side plates (16) enclose a collecting cavity (17) for collecting impurities, an extension plate (18) is fixed at one end of the bottom plate (13) far away from the fine filter screen (15), the extension plate (18) is parallel to the plane of the bottom plate (13), the edge of the extension plate (18) is fixedly connected with a baffle plate (19), the top end of the filter box (12) is provided with an opening, the top end of the filter box (12) is provided with a cover body (20), and a locking assembly (21) used for locking the cover body (20) on the filter box (12) is arranged between the filter box (12) and the cover body (20).

3. The desulfurization absorption tower according to claim 2, wherein: the locking assembly (21) comprises a snapping block (22) which is rotatably connected to the outer wall of the filter box (12), a lock catch (23) is rotatably connected to the snapping block (22), and a lock hook (24) which is matched and fastened with the lock catch (23) is arranged on the cover body (20).

4. The desulfurization absorption tower according to claim 2, wherein: limiting blocks (25) are fixed on the two side plates (16), limiting grooves (26) are formed in the inner wall of the filter box (12), and the limiting blocks (25) are in sliding fit with the limiting grooves (26).

5. The desulfurization absorption tower according to claim 2, wherein: and a sealing piece (27) used for sealing a gap between the cover body (20) and the filter box (12) is arranged at the top end of the filter box (12).

6. The desulfurization absorption tower according to claim 2, wherein: a lifting rod (28) which is convenient for lifting the collecting cavity (17) out of the filter box (12) is arranged between the two side plates (16).

7. The desulfurization absorption tower according to claim 1, wherein: the liquid outlet pipe (6) is provided with a front stop valve (7), a rear stop valve (9) is arranged between the filter box (12) and the circulating pump (10), the bottom end of the filter box (12) is provided with a liquid discharge pipe (29), and the liquid discharge pipe (29) is provided with a liquid discharge valve (30).

8. The desulfurization absorption tower according to claim 1, wherein: the reaction tank (4) diapire is conical slope setting, the least significant end and drain pipe (6) fixed connection of reaction tank (4) diapire.

9. The desulfurization absorption tower according to claim 1, wherein: one end of the air inlet pipe (2) inserted into the reaction liquid is provided with an air inlet head (5) for preventing reverse suction, and the air inlet head (5) is arranged like a funnel for inversion.