CN117258525A

CN117258525A - Desulfurizing tower with adjustable multilayer

Info

Publication number: CN117258525A
Application number: CN202311552769.XA
Authority: CN
Inventors: 郭辉群
Original assignee: Fujian Yinghui New Material Technology Co ltd
Current assignee: Fujian Yinghui New Material Technology Co ltd
Priority date: 2023-11-21
Filing date: 2023-11-21
Publication date: 2023-12-22
Anticipated expiration: 2043-11-21
Also published as: CN117258525B

Abstract

The invention relates to the technical field of desulfurizing towers, in particular to a multilayer adjustable desulfurizing tower. The desulfurizing tower comprises a tower body, a separating piece vertically arranged in the tower body and used for separating the tower body into a reaction cavity and a dehumidification cavity, a flue gas input pipe connected with the reaction cavity, a flue gas output pipe connected with the dehumidification cavity, a water spraying component arranged above the reaction cavity, a circulating pump, a side wall connected with the tower body, a circulating pipe connected with the circulating pump and the water spraying component and a reaction plate. The reaction plates are arranged in the reaction cavity in parallel, overflow channels are reserved on one side of each reaction plate, the positions of the overflow channels on the adjacent reaction plates are staggered, each reaction plate is connected with an air pipeline, an exchange channel is arranged on each reaction plate, and an air outlet is formed in the side wall of each exchange channel. The invention is provided with the reaction plate, so that the flue gas enters the desulfurizing agent from the exchange channel, and the flue gas and the desulfurizing agent react more thoroughly; the air inflow of air is controlled, the flue gas throughput of the exchange channel is controlled, the reaction speed of flue gas is further controlled, and more complete vulcanization is promoted.

Description

Desulfurizing tower with adjustable multilayer

Technical Field

The invention relates to the technical field of desulfurizing towers, in particular to a multilayer adjustable desulfurizing tower.

Background

The desulfurizing tower is tower equipment for desulfurizing industrial waste gas and is used mainly in eliminating sulfur dioxide from flue gas stream. Most of the existing manufacturers select wet desulfurization, which uses limestone slurry as a vulcanizing agent, and the limestone slurry reacts with sulfur dioxide in the flue gas and is further oxidized to form calcium sulfate precipitate for output; the top of the tower is provided with the spraying component, so that the vulcanizing agent contacts with the flue gas in opposite directions and reacts, the contact area of the reaction mode is often insufficient, sulfur dioxide in the flue gas is not completely absorbed, and a plurality of large desulfurizing towers are mostly in vertical high-rise structures, basically reach more than 50m, and are easy to generate vibration accidents under the condition of bearing pressure, temperature and gravity load simultaneously, and the smoke outlet mode at the top of the tower is also unfavorable for the connection of subsequent equipment.

Disclosure of Invention

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings hereof.

The invention aims to overcome the defects and provide the multi-layer adjustable desulfurizing tower which has the advantages of gradual desulfurization, more complete absorption reaction, adjustable reaction speed and high energy utilization rate.

In order to achieve the above object, the technical solution of the present invention is: the utility model provides a desulfurizing tower with adjustable multilayer, includes the tower body, vertically locates in this tower body divide into the communicating reaction chamber in top with this tower body and falls the separator in wet chamber, with the flue gas input tube that this reaction chamber is connected, with the flue gas output tube that this wet chamber is connected falls, locate water spray assembly, circulating pump, the lateral wall of connecting this tower body, circulation pipe and the reaction plate of this circulating pump and this water spray assembly of this reaction chamber. The reaction plates are arranged in the reaction cavity in parallel and are positioned above the flue gas input pipe, overflow channels are reserved on one side of each reaction plate, the positions of the overflow channels on the adjacent reaction plates are staggered, each reaction plate is of a hollow structure and is connected with an air pipeline, a plurality of exchange channels are arranged on each reaction plate, air outlets are arranged on the side walls of the exchange channels, and air is discharged from the air outlets through the reaction plates.

In some embodiments, a baffle is provided on the reaction plate on a side proximate to the overflow channel.

In some embodiments, the desulfurizing tower further comprises a heat exchange member, the heat exchange member is arranged in the dehumidifying cavity, the heat exchange member is provided with a plurality of heat exchange channels in the vertical direction, the shell of the heat exchange member interacts with the heat exchange channels to form an S-shaped cooling water channel, and two ends of the cooling water channel are respectively connected with the water inlet pipe and the water outlet pipe.

In some embodiments, the desulfurizing tower further comprises a demisting piece, the demisting piece is arranged below the heat exchange piece, a plurality of bending plates are vertically arranged in the demisting piece, and the side wall of the demisting piece is connected with the flue gas output pipe.

In some embodiments, the water spraying assembly comprises a connecting pipe and a spray head, the connecting pipe is connected with the circulating pipe and the spray heads in series, a water outlet of the spray head is provided with a first water diversion sheet, and a second water diversion sheet is arranged below the first water diversion sheet.

In some embodiments, the first water diversion sheet and the second water diversion sheet are both arc-shaped sheets which are convex upwards, and the area of the first water diversion sheet is smaller than that of the second water diversion sheet.

In some embodiments, the bottoms of the reaction chamber and the dehumidification chamber are provided with a discharge port.

In some embodiments, the partition is provided with a plurality of continuous holes, and the continuous holes enable the bottom of the reaction cavity and the bottom of the dehumidifying cavity to be communicated.

In some embodiments, the cross-sectional area of the exchange channels on different reaction plates decreases with increasing height.

In some embodiments, the side walls of the tower are provided with second discharge openings at positions above the single reaction plate.

By adopting the technical scheme, the invention has the beneficial effects that:

according to the invention, the interior of the desulfurizing tower is divided into two parts by arranging the separating piece, so that the height of the desulfurizing tower is effectively shortened, the flue gas deflects in the tower under the continuous driving force, the time of the flue gas in the tower is prolonged, and the desulfurizing is more complete indirectly; by arranging the reaction plate, the sprayed desulfurizing agent generates dispersion flow in the vertical direction and the horizontal direction on the reaction plate, and at the moment, the flue gas enters into the desulfurizing agent solution from the exchange channel, so that the flue gas is in more complete contact with the desulfurizing agent, and the reaction is more complete; an air outlet is arranged on the exchange channel, air enters the reaction plate through an air pipeline and then is discharged from the air outlet to react with calcium sulfite to form more stable calcium sulfate output, the multi-layer reaction plate absorbs and precipitates the flue gas step by step, so that the reaction is more complete, and meanwhile, the step by step output of calcium sulfate can avoid waste of raw materials caused by mixing and sinking of a large amount of calcium sulfate and limestone; the air inflow of air is controlled, the flue gas throughput of the exchange channel on the single-layer reaction plate is controlled, the reaction speed of flue gas is further controlled, gradual vulcanization is realized, and more complete vulcanization is promoted.

According to the invention, the height of the desulfurizing agent layer on the single-layer reaction plate is determined by arranging the baffle plate, so that the whole coverage of the desulfurizing agent on the exchange channel is realized, and the desulfurizing agent is thoroughly contacted with the flue gas.

According to the invention, the heat exchange piece is arranged, the flue gas exchanges heat with the circulating water in the heat exchange piece through the heat exchange piece, the circulating water with the increased temperature can be used for heating and the like, and the flue gas passes through the desulfurizing agent layer for many times and contains a large amount of water, so that the temperature is reduced to enable the water in the flue gas to be primarily separated out, the heat circulation is realized, and the dehydration of the flue gas is promoted.

According to the invention, the demisting piece is arranged to carry out secondary dehydration demisting on the flue gas, and fine gas-liquid separation is realized by utilizing different movement directions of water and the flue gas, so that the separation is finer.

According to the invention, the nozzle with the double-layer water diversion plates is arranged, so that the slurry at the bottom of the circulating pump is pumped, the part of solid impurities are unavoidably doped, the second water diversion plate is used as a main hydrophobic part, the first water diversion plate is used for assisting in slowing down the impact force of the second water diversion plate, the solid impurities are prevented from being adhered to the second water diversion plate due to collision, and the upwardly convex water diversion plate enables the dispersion range of the desulfurizing agent to be wider.

According to the invention, the second discharge port and the first discharge port are arranged step by step, so that the timely output of calcium sulfate is realized; the arrangement of the coherent holes realizes the air pressure balance in the two cavities, so that the slurry can flow in a mixing way; according to the characteristic that the content of sulfur oxide in the flue gas is gradually reduced along with the height improvement, the size of the exchange channels with different heights is set, so that the flue gas can be desulfurized step by step.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

It is apparent that these and other objects of the present invention will become more apparent from the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings and figures.

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of the preferred embodiments, as illustrated in the accompanying drawings.

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 the invention and together with the embodiments of the invention, serve to explain the invention, without limitation to the invention.

In the drawings, like parts are designated with like reference numerals and are illustrated schematically and are not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only one or several embodiments of the invention, and that other drawings can be obtained according to such drawings without inventive effort to a person skilled in the art.

FIG. 1 is an internal structural view of a multi-layer adjustable desulfurizing tower of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a front cross-sectional view of a multi-layered adjustable desulfurization tower of the present invention;

FIG. 4 is a schematic view showing the internal structure of a heat exchange member of a multi-layered adjustable desulfurizing tower according to the present invention;

FIG. 5 is a schematic view showing the internal structure of a demister of a multi-layer adjustable desulfurizing tower according to the present invention;

FIG. 6 is a schematic diagram of a spray head of a multi-layer adjustable desulfurizing tower according to the present invention;

FIG. 7 is a front view of a spray head of a multi-layer adjustable desulfurizing tower of the present invention.

The main reference numerals illustrate:

10. a tower body;

101. the reaction chamber, 102, a dehumidification chamber, 103, an overflow channel, 104, a first discharge port, 105 and a second discharge port;

20. a partition;

201. a coherent hole;

30. a flue gas input pipe;

40. a flue gas output pipe;

50. a water spray assembly;

501. the spray head comprises a connecting pipe, a spray head and a first water diversion sheet, wherein the spray head comprises a connecting pipe, a spray head and a first water diversion sheet, and the spray head comprises a first water diversion sheet, a second water diversion sheet, and a second water diversion sheet;

60. a circulation pipe;

70. a circulation pump;

80. a reaction plate;

801. air duct, 802. Exchange channel, 803, air outlet, 804. Baffle;

90. a heat exchange member;

901. heat exchanging channel 902, cooling water channel 903, water inlet pipe 904, water outlet pipe;

11. a defogging member;

111. a bending plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following detailed description. It should be understood that the detailed description is presented merely to illustrate the invention, and is not intended to limit the invention.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that the two bodies connected together do not form a connection relationship through a transition structure, but are connected together to form a whole through a connection structure. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, the present invention provides a technical solution: a multi-layer adjustable desulfurizing tower comprises a tower body 10, a partition member 20, a flue gas input pipe 30, a flue gas output pipe 40, a water spraying assembly 50, a circulating pipe 60, a circulating pump 70, a reaction plate 80, a heat exchange member 90 and a demisting member 11.

Referring to fig. 3, the partition 20 is vertically disposed in the tower 10 to divide the tower 10 into a reaction chamber 101 and a dehumidifying chamber 102, which are communicated at the top, and a plurality of consecutive holes 201 are disposed at the lower portion of the partition 20, and the consecutive holes 201 enable the bottoms of the reaction chamber 101 and the dehumidifying chamber 102 to be communicated. The bottom of the reaction cavity 101 and the bottom of the dehumidification cavity 102 are provided with a first discharge hole 104, and the discharge hole can be connected with a calcium sulfate collecting box to collect calcium sulfate.

The flue gas input pipe 30 is connected with the reaction cavity 101, the flue gas output pipe 40 is connected with the dehumidification cavity 102, and the flue gas input pipe 30 and the flue gas output pipe 40 are respectively connected with upper and lower equipment of the desulfurizing tower.

The water spraying assembly 50 is disposed above the reaction chamber 101, and the water spraying assembly 50 includes a connection pipe 501 and a showerhead 502. The connection pipe 501 is connected in series with the circulation pipe 60 and the plurality of spray heads 502, referring to fig. 6, a water outlet of the spray head 502 is provided with a first water dividing plate 503, and a second water dividing plate 504 is arranged below the first water dividing plate 503. Referring to fig. 7, the first water diversion sheet 503 and the second water diversion sheet 504 are both protruding arc-shaped sheets, the area of the first water diversion sheet 503 is smaller than that of the second water diversion sheet 504, and a plurality of water-repellent grooves and other structures beneficial to water dispersion can be arranged on the water diversion sheets.

The circulating pipe 60 is connected with the side wall of the tower body 10, the circulating pump 70 and the water spraying assembly 50, the bottom of the tower is provided with a desulfurizing agent solid-liquid mixture, and the circulating pipe 60 is connected with desulfurizing agent upper layer liquid.

The three reaction plates 80 are arranged in parallel in the reaction chamber 101 and above the flue gas input pipe 30, and the side wall of the tower body 10 is provided with a second discharge hole 105 above the single reaction plate 80. The reaction plate 80 has an overflow channel 103 on one side, the positions of the overflow channels 103 on adjacent reaction plates 80 are staggered, a baffle 804 is arranged on one side of the reaction plate 80 close to the overflow channel 103, and the reaction plate 80 can be connected with a vibration device, such as an ultrasonic vibration rod, so as to realize self vibration of the reaction plate 80. The reaction plate 80 is hollow and is connected with an air pipeline 801, the air pipeline 801 is connected with an air compression pump, and the air flow in the reaction plate 80 is controlled through a single valve. Referring to fig. 2, the reaction plate 80 is provided with a plurality of exchange channels 802, and cross-sectional areas of the exchange channels 802 on different reaction plates 80 become smaller step by step with increasing heights. The side wall of the exchange passage 802 is provided with an air outlet 803, and air is discharged from the air outlet 803 through the reaction plate 80.

The heat exchanging element 90 is disposed in the dehumidifying chamber 102, referring to fig. 4, the heat exchanging element 90 is provided with a plurality of heat exchanging channels 901 in a vertical direction, the shell of the heat exchanging element 90 interacts with the heat exchanging channels 901 to form S-shaped cooling water channels 902, and two ends of the cooling water channels 902 are respectively connected with a water inlet pipe 903 and a water outlet pipe 904.

The demister 11 is disposed below the heat exchange member 90, and can be directly connected to the heat exchange channel 901 on the heat exchange member 90 correspondingly, or can be kept at a distance from the heat exchange member 90. Referring to fig. 5, a plurality of bending plates 111 are vertically disposed in the demister 11, and a sidewall of the demister 11 is connected to the flue gas outlet pipe 40.

Working principle: when the desulfurizing tower works, the upper-level equipment inputs the flue gas with temperature into the reaction cavity 101 through the flue gas input pipe 30, the flue gas moves upwards under the action of the flue gas input pipe, the circulating pump 70 conveys the desulfurizing agent at the bottom of the tower body 10 to the water spraying assembly 50 for spraying, the desulfurizing agent from top to bottom forms desulfurizing agent layers with the height of a baffle on each single reaction plate 80, the flue gas is in contact reaction with the desulfurizing agent layers through the exchange channels 802 on the reaction plates 80 to form calcium sulfite, then the reaction plates 80 release air to enable the calcium sulfite on the single reaction plates 80 to react to form calcium sulfate, part of the calcium sulfate and part of the desulfurizing agent drop from the reaction plates 80 to the bottom of the tower to output the calcium sulfate, and the residual calcium sulfate is output from the reaction plates 80 on each layer. The flue gas is desulfurized after passing through the multi-layer reaction plate 80, the movement direction of the desulfurized flue gas is changed in the tower under the pushing of the subsequent flue gas, the first bending process realizes the first separation of gas and liquid, then the temperature of the flue gas is further reduced through the heat exchange piece 90 to realize the second separation of gas and liquid, and finally the flue gas dehumidification is completed through the demisting piece 11 to realize the diversion separation of gas and liquid phases on the turning plate. By controlling the amount of air in and out during operation, precipitation is prevented from clogging the crossover passage 802 and the flue gas flow is controlled.

It is to be understood that the disclosed embodiments are not limited to the specific process steps or materials disclosed herein, but are intended to extend to equivalents of such features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic, described in connection with the embodiment is included in at least one embodiment of the invention. Thus, appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, numbers, etc., to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention can be practiced without one or more of the specific details, or with other methods, components, materials, etc.

Claims

1. The utility model provides a desulfurizing tower with adjustable multilayer, a serial communication port, including tower body (10), separating element (20), flue gas input tube (30), flue gas output tube (40), water spray subassembly (50), circulating pipe (60), circulating pump (70) and reaction plate (80), this separating element (20) are located vertically in this tower body (10) and divide into the communicating reaction chamber (101) in top and dehumidification chamber (102) with this tower body (10), this flue gas input tube (30) are connected with this reaction chamber (101), this flue gas output tube (40) are connected with this dehumidification chamber (102), this water spray subassembly (50) are located the top of this reaction chamber (101), the lateral wall of this tower body (10) is connected to this circulating pipe (60), this circulating pump (70) and this water spray subassembly (50), a plurality of this reaction plate (80) are located in parallel this reaction chamber (101) and are located the top of this flue gas input tube (30), this reaction plate (80) leave overflow channel (103) in one side, this overflow channel (103) on this adjacent reaction plate (80) are located on this overflow channel (80), this overflow channel (802) staggers each other, this reaction plate (80) are equipped with air exchange channel (802) and these air outlet (802) are equipped with on this air exchange structure, air is discharged from the air outlet (803) through the reaction plate (80).

2. The multi-layer adjustable desulfurizing tower according to claim 1, wherein a baffle (804) is provided on the side of the reaction plate (80) close to the overflow path (103).

3. The multi-layer adjustable desulfurizing tower according to claim 1, further comprising a heat exchange member (90), wherein the heat exchange member (90) is arranged in the dehumidifying chamber (102), the heat exchange member (90) is provided with a plurality of heat exchange channels (901) in the vertical direction, the shell of the heat exchange member (90) interacts with the heat exchange channels (901) to form an S-shaped cooling water channel (902), and two ends of the cooling water channel (902) are respectively connected with a water inlet pipe (903) and a water outlet pipe (904).

4. A multi-layer adjustable desulfurizing tower according to claim 3, further comprising a demister (11), wherein the demister (11) is arranged below the heat exchange member (90), a plurality of bending plates (111) are vertically arranged in the demister (11), and the side wall of the demister (11) is connected with the flue gas output pipe (40).

5. The multi-layer adjustable desulfurizing tower according to claim 1, wherein the water spraying assembly (50) comprises a connecting pipe (501) and a spray head (502), the connecting pipe (501) is connected with the circulating pipe (60) and a plurality of spray heads (502) in series, a first water diversion sheet (503) is arranged at a water outlet of the spray head (502), and a second water diversion sheet (504) is arranged below the first water diversion sheet (503).

6. The multi-layered adjustable desulfurization tower according to claim 5, wherein the first water dividing plate (503) and the second water dividing plate (504) are both protruding arc-shaped plates, and the area of the first water dividing plate (503) is smaller than that of the second water dividing plate (504).

7. The multi-layer adjustable desulfurizing tower according to claim 1, wherein the bottoms of the reaction chamber (101) and the dehumidifying chamber (102) are provided with a first discharge port (104).

8. The multi-layer adjustable desulfurizing tower according to claim 1, wherein the partition (20) is provided with a plurality of continuous holes (201), and the continuous holes (201) allow the bottoms of the reaction chamber (101) and the dehumidifying chamber (102) to be communicated.

9. A multi-layered adjustable desulfurization tower according to claim 1, wherein the cross-sectional area of the exchanging channel (802) on the different reaction plates (80) becomes smaller with increasing height.

10. The multi-layer adjustable desulfurizing tower according to claim 1, wherein the side walls of the tower body (10) are provided with second discharge openings (105) at positions above the single reaction plate (80).