CN112870961B - Fixed bed desulfurization reaction device and using method thereof - Google Patents
Fixed bed desulfurization reaction device and using method thereof Download PDFInfo
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- CN112870961B CN112870961B CN202011600622.XA CN202011600622A CN112870961B CN 112870961 B CN112870961 B CN 112870961B CN 202011600622 A CN202011600622 A CN 202011600622A CN 112870961 B CN112870961 B CN 112870961B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The disclosure relates to the field of flue gas treatment, in particular to a fixed bed desulfurization reaction device and a using method thereof. The fixed bed desulfurization reaction device comprises a desulfurization bin, wherein the interior of the desulfurization bin is divided into a plurality of desulfurization chambers which are connected in series in the horizontal direction by an inter-chamber grid diversion partition wall; a desulfurizer adding section is arranged at the top of the desulfurization bin, a plurality of desulfurizer adding sites are arranged in the desulfurizer adding section, at least one desulfurizer adding site corresponds to each desulfurization chamber, and each desulfurizer adding site corresponds to one butterfly-shaped buffer material guide and one blanking stabilizer; the two ends of the horizontal direction of the desulfurization bin are respectively provided with a flue gas inlet and a flue gas outlet, the flue gas inlet and the flue gas outlet are of a neck expanding structure, and a grid diversion partition wall for the inlet and the outlet is arranged at the joint of the neck expanding structure and the desulfurization bin. The method mainly aims at the defects of low smoothness of material feeding and discharging, lower utilization efficiency of the desulfurizer, large resistance consumption of the device, poorer dust removal performance and the like in the prior art.
Description
Technical Field
The disclosure relates to the field of flue gas treatment, in particular to a fixed bed desulfurization reaction device and a using method thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, common flue gas desulfurization methods include a wet method, a semi-dry method, a dry method and the like. The wet desulphurization is stable in operation and high in desulphurization efficiency, but the desulphurization waste water is difficult to treat, the white smoke phenomenon is serious, the system is complex, and the operation and maintenance workload is large; the semi-dry desulfurization process has more applications and higher desulfurization efficiency, but has the defects of large running resistance, difficult adaptation to high-humidity flue gas and the like. The dry desulfurization does not need water and has no white smoke phenomenon, mainly comprises in-furnace calcium injection, sodium-based dry desulfurization, fixed bed dry desulfurization and the like, has the advantages of strong working condition adaptability, small occupied area, simple operation and the like, and is increasingly applied. In particular, fixed bed dry desulfurization techniques are popular in some non-electric applications.
The fixed bed dry desulfurization technology adopts granular desulfurizer, and no dust removal device is arranged subsequently, so that the practicability is high in actual production, but the inventor finds that the fixed bed dry desulfurization technology is mainly the granular desulfurizer, the existing fixed bed dry desulfurization technology has the defects of low smoothness of added and discharged materials, low utilization efficiency of the desulfurizer, high system resistance consumption, poor dust removal performance and the like, and the improvement of the prior art is needed in order to further reduce the operation cost and improve the technical performance.
Disclosure of Invention
Aiming at the defects of low smoothness of material feeding and discharging, lower utilization efficiency of a desulfurizer, large resistance consumption of the device, poorer dust removal performance and the like in the prior art.
In one or some embodiments of the present disclosure, a fixed bed desulfurization reaction apparatus is provided, which includes a desulfurization bin, the interior of which is divided into two or more desulfurization chambers connected in series in a horizontal direction by an inter-chamber grid flow-guiding partition wall;
a desulfurizer adding section is arranged at the top of the desulfurization bin, a plurality of desulfurizer adding sites are arranged in the desulfurizer adding section, at least one desulfurizer adding site corresponds to each desulfurization chamber, and each desulfurizer adding site corresponds to one butterfly-shaped buffer material guide and one blanking stabilizer;
the two ends of the horizontal direction of the desulfurization bin are respectively provided with a flue gas inlet and a flue gas outlet, the flue gas inlet and the flue gas outlet are of a neck-expanding structure, and a grid diversion partition wall for the inlet and the outlet is arranged at the joint of the neck-expanding structure and the desulfurization bin.
In one or some embodiments of the present disclosure, there is provided a fixed bed desulfurization reaction process, which is performed in the above fixed bed desulfurization reaction apparatus, including the steps of: flue gas enters the neck-expanding structure from the flue gas inlet, enters the desulfurization chamber after passing through the inlet grid flow guide partition wall, enters the next-stage desulfurization chamber through the inter-chamber grid flow guide partition wall, then flows to the outlet grid flow guide partition wall, and is discharged through the flue gas outlet after passing through the outlet trough-shaped plate, so that the flue gas desulfurization and purification are realized.
One or some of the above technical solutions have the following advantages or beneficial effects:
1) this openly sets up a plurality of partition walls that form by the folded plate, specifically includes intercellular grid water conservancy diversion partition wall between the desulfurization room, unloading stabilizer, import grid water conservancy diversion partition wall, and the cooperation between partition wall or the partition wall has realized jointly that the flue gas evenly distributed in the desulfurization storehouse, and with desulfurizer homogeneous reaction, improve desulfurizer utilization ratio and flue gas desulfurization effect.
2) The utility model discloses an interventricular grid diversion partition wall between a plurality of desulfurization rooms sets up, concatenates a plurality of desulfurization rooms in flue gas flow direction, can satisfy high concentration SO2High removal rate, and simple construction and operation.
3) In order to improve the uniformity of the desulfurizer during filling, the butterfly-shaped buffer guide device is arranged on the upper part in the desulfurization chamber, can conduct diversion, step distribution and multi-angle blanking on the loaded material, and can also buffer the collision abrasion of material particles and the generation of flying dust.
4) For preventing because of the too big phenomenon of inhomogeneous unloading of appearance of reaction chamber horizontal cross-section, this disclosure sets up the unloading stabilizer, separates into a plurality of compartments with the desulfurization chamber, realizes even unloading, avoids the unloading in-process to form great swirl, eliminates the reloading dead angle, improves unloading smoothness nature and desulfurizer utilization ratio.
5) The desulfurizer filling area and the flue gas flow field are arranged separately, and the local raise dust in the material filling and discharging process cannot reach the flue gas outlet; the synergistic configuration of the fixed bed material layer, the outlet grid flow guide partition wall and the outlet trough plate can achieve high-efficiency dust removal capability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and, together with the description, serve to explain the disclosure and not to limit the disclosure.
Fig. 1 is a schematic elevation structure diagram of a fixed bed desulfurization reaction device according to an embodiment of the present disclosure.
Fig. 2 is a schematic plan view of a bin according to an embodiment of the disclosure.
Fig. 3 is a schematic structural view of an inter-chamber grid flow-guiding partition wall according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural view of a butterfly buffer material guide according to an embodiment of the disclosure.
Wherein: 1. a flue gas inlet; 2. an inlet grid flow guide partition wall; 3. the net grid diversion partition wall between the rooms; 4. an exit mesh grid flow-guiding partition wall; 5. an outlet trough plate; 6. a flue gas outlet; 7. a material feeding section in one chamber; 8. a butterfly buffer material guide; 9. a chamber blanking stabilizer; 10. a chamber discharge system; 11. a second chamber material feeding section; 12. a two-chamber butterfly buffer material guide; 13. a second chamber blanking stabilizer; 14. two-chamber discharge system.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making any creative effort, shall fall within the protection scope of the disclosure.
Aiming at the defects of low smoothness of material feeding and discharging, lower utilization efficiency of a desulfurizer, large resistance consumption of the device, poorer dust removal performance and the like in the prior art.
In one or some embodiments of the present disclosure, a fixed bed desulfurization reaction apparatus is provided, which includes a desulfurization bin, the interior of which is divided into two or more desulfurization chambers connected in series in a horizontal direction by an inter-chamber grid flow-guiding partition wall;
a desulfurizer adding section is arranged at the top of the desulfurization bin, a plurality of desulfurizer adding sites are arranged in the desulfurizer adding section, at least one desulfurizer adding site corresponds to each desulfurization chamber, and each desulfurizer adding site corresponds to one butterfly-shaped buffer material guide and one blanking stabilizer;
the two ends of the horizontal direction of the desulfurization bin are respectively provided with a flue gas inlet and a flue gas outlet, the flue gas inlet and the flue gas outlet are of a neck-expanding structure, and the joint of the neck-expanding structure and the desulfurization bin is provided with an inlet grid diversion partition wall and an outlet grid diversion partition wall.
The inlet grid diversion partition wall has the functions of diversion and air equalization.
The material in the import net bars water conservancy diversion partition wall can not pass, plays the effect of separation material, separates by a plurality of longitudinal baffles in the import net bars water conservancy diversion partition wall, still can make the import net bars water conservancy diversion partition wall possess the frame support effect.
Preferably, the grid diversion partition wall between the rooms comprises a plurality of partition plates which are distributed in parallel and protrude upwards, the highest positions of the partition plates which protrude upwards are fixedly connected with a vertical plate, and a gap is formed between the vertical plate and the partition plate which protrudes upwards above the vertical plate to form a channel for smoke to flow;
the two ends of the upwards convex partition plates are fixedly connected with the desulfurization bin, and the specific connection mode can be welding or fastening connection with bolts and the like.
The baffle plate protruding upwards can be in an inverted U shape or a wave shape, as long as the middle is high, and the two sides are low, the structure ensures that the desulfurizer cannot stay on the baffle plate, and the desulfurizer is prevented from being injected into the middle of the baffle plate.
The grid diversion partition wall between the chambers is used for dividing the desulfurization bin into a plurality of desulfurization chambers.
The specific structure of the grid diversion partition wall between rooms is shown in fig. 3, and besides the functions of diversion ventilation, isolation of the sub-bins and wall plate support, the grid diversion partition wall between rooms can also transversely divert flow through the through areas between the folded plate layers, so that the short circuit and bias flow of smoke can be corrected, and the flow field can be further uniform. Like the inlet grid diversion partition wall, the inter-chamber grid diversion partition wall also has the functions of ventilation, material impermeability and frame support.
Preferably, the partition board protruding upwards is in an inverted v shape,
theoretically, the inverted V shape is the most convenient structure for realizing wind equalization and preventing short circuit.
Preferably, the separator is a mesh grid separator.
Preferably, the desulfurizer feeding site comprises a feeding port, a material guide buffer is arranged below the feeding port,
the guide buffer enables the desulfurizer to be uniformly put in the spaces on two sides of the guide buffer, so that the phenomenon that the desulfurizer is completely gathered below the guide opening in the guide process to form accumulation and influence the desulfurization effect is avoided, and the guide buffer occupies an accumulation center to enable the blanking to be uniform.
Preferably, the material guide buffer is a butterfly-shaped material guide device, the butterfly-shaped material guide device is provided with a plurality of blanking slopes, and the plurality of blanking slopes are arranged in a circumferential shape;
as shown in fig. 4, the desulfurizer material enters from the material feeding section at the top, only one feeding port is arranged at the top to simplify the feeding operation, and a butterfly-shaped buffer material guide is designed to make the material layer uniform and shorten the height of the feeding section. The multi-angle blanking of material is divided to the step, also can cushion the production of collision wearing and tearing and raise dust of material granule.
The unloading stabilizer is equivalent to providing a plurality of wall that can supply to hang the material, prevents that the reactor wall from easily hanging the material when great and piling up at the reactor wall, even forms the windrow swirl, and the material can pass the unloading stabilizer, is about to the unloading stabilizer parcel in the material heap.
Preferably, the butterfly-shaped feeder is formed by fixedly connecting two conical pieces in an up-and-down structure, the conical piece at the upper part has a larger gradient, and the bottom radius is smaller;
it is further preferred that the lower located cone surface has a plurality of grooves, said grooves being along the generatrix.
The desulfurizer is uniformly distributed on the slope, and the desulfurizer entering the desulfurization bin approaches to the same plane.
Further preferably, a blanking stabilizer corresponds to the lower part of each material guide buffer.
Guide buffer and unloading stabilizer cooperation make the guide in-process avoid preventing because of the horizontal cross-section of reacting chamber is too big, and the desulfurizer is many along the wall unloading, and the material center forms the swirl, the phenomenon of inhomogeneous unloading appears, and is concrete, and the guide buffer has occupied and has piled up the center, avoids the material to pile up, and the unloading stabilizer falls into a plurality of parts with the desulfurizing chamber, avoids forming the pit in the middle of the reacting chamber horizontal interface process leads to the desulfurizer, and the two realizes in coordination that the unloading is even.
Preferably, the blanking stabilizer consists of a plurality of folded plates, each folded plate comprises a first folded plate, a second folded plate and a third folded plate which are sequentially connected, the first folded plate and the third folded plate are parallel and form a certain angle with the second folded plate, the second folded plate and a vertical line at the bottom of the desulfurization bin form an acute angle and are inclined downwards, the first folded plates of all the folded plates are positioned on the same line vertical to the bottom of the desulfurization bin, the second folded plates are distributed in a staggered manner, and gaps are formed among the folded plates for flue gas to circulate;
preferably, the angle formed is an obtuse angle;
the arrangement of the folded plates can prevent the desulfurizer from forming vortex in the blanking process, and gaps are formed among the folded plates to play a certain wind-balancing role.
Further preferably, the folded plates in the blanking stabilizer are Z-shaped folded plates with obtuse included angles.
Preferably, a plurality of air equalizing plates are longitudinally arranged on the diversion partition wall of the inlet grid, each air equalizing plate comprises three folded plates which are fixedly connected in sequence, two folded plates form a certain included angle, the included angle is upward, the position of the highest position of the included angle is positioned on the same vertical line, namely the separating line of the neck expanding structure and the desulfurization bin, the third folded plate of the air equalizing plate is a vertical plate, the vertical plate is positioned on one side of the desulfurization bin,
the folded plate on one side of the neck expanding structure forms a certain inclination angle with the vertical direction, and the inclination angle enables the flue gas in the neck expanding structure to be uniformly distributed in the inlet grid diversion partition wall.
Specifically, the angle of inclination of the middle flap is large, horizontal or nearly horizontal, and the angles of inclination of the flaps at the two ends are small and almost parallel to the edge of the neck-expanding structure.
Preferably, the fixed bed desulfurization reaction device further comprises an outlet grid flow guide partition wall, the outlet grid flow guide partition wall is composed of a plurality of folded plates which are parallel in the vertical direction, each folded plate is identical in shape and is composed of a plurality of secondary folded plates which are fixedly connected by a certain included angle, the heights of the secondary folded plates along the flow direction of flue gas are sequentially increased, and the secondary folded plate closest to the desulfurization bin is perpendicular to the bottom of the desulfurization bin;
similarly, the exit grid diaphragm may be provided with a frame support.
Preferably, the flue gas outlet is of a necking structure.
In essence, the inter-chamber grid flow guide partition wall, the blanking stabilizer, the inlet grid flow guide partition wall and the outlet grid flow guide partition wall between the desulfurization chambers can realize the uniform distribution of flue gas in the desulfurization chamber, and the cooperation of each partition wall or a plurality of partition walls has the functions of uniform flow field, separation and sub-chamber and frame support. Each partition wall comprises a plurality of folded plates of different shapes, and during specific application, the two ends of each folded plate can be welded on the bin walls on the two sides, and a plurality of connecting plates can also be vertically communicated among the folded plates, so that the partition wall has the advantages of high strength, light structure, small resistance and good material isolation and sealing effects.
Preferably, the desulfurization bin is provided with a plurality of desulfurization bins, wherein at least one of the desulfurization bins is a spare bin.
Preferably, the number of the desulfurization bins is three, and one of the desulfurization bins is a spare bin. At least three or more bins are typically provided in parallel, including a spare bin. Each bin is divided into two chambers which are arranged in series front and back along the flue gas direction and are used as an independent flue gas treatment area, and the aims of homogenizing the flow field and reducing the system resistance are fulfilled by arranging a grid flow guide partition wall; the desulfurizer filling area and the flue gas flow field are arranged separately, and the phenomenon that dust at the outlet exceeds the standard does not exist in the material filling and discharging process; trough plates arranged at the outlet of the fixed bed material layer matching device have high-efficiency dust removal capacity; the material guide device and the bin inner partition wall are arranged from the top filling area to the bottom discharging system, so that the material charging and discharging process is smoother.
The size of each bin is generally the same, and the bins are not suitable to be too large or too small, and the length and the width of each bin are about 2-4 m. According to different working conditions of flue gas, by combining with the characteristic parameters of the desulfurizer material, the flow area and the retention time of the device are reasonably designed so as to exert the maximum performance of the desulfurization device.
As shown in figure 2, a plurality of bins can be arranged in parallel according to the smoke quantity, the number of the bins is more than or equal to 3, the bins comprise a standby bin, and the standby bin is put into use when materials are replaced. Each bin is independent of the other. Each bin comprises 2 (or a plurality of) chambers which are connected in series from front to back, a grid diversion partition wall 3 between the chambers is arranged in the middle, smoke can pass through, and desulfurizing agents are isolated from each other.
Each working bin with the evenly distributed smoke is orderly and horizontally discharged into a clean smoke channel through an inlet mesh grid flow guide partition wall, an inter-chamber mesh grid flow guide partition wall, an outlet trough plate and a smoke outlet and then is converged into a chimney for discharging.
In one or some embodiments of the present disclosure, there is provided a fixed bed desulfurization reaction process, which is performed in the above fixed bed desulfurization reaction apparatus, including the steps of: flue gas enters the neck-expanding structure from the flue gas inlet, enters the desulfurization bin after passing through the inlet grid flow guide partition wall, and flows to the outlet through the multi-stage inlet grid flow guide partition wall in the desulfurization bin, so that the flue gas desulfurization purification is realized.
Preferably, the method also comprises a desulfurizing agent adding step: the desulfurizer enters the desulfurization chamber from the desulfurizer feeding section, and is horizontally distributed in the desulfurization chamber through the blanking stabilizer.
Preferably, the desulfurizing agent is a granular desulfurizing agent.
Example 1
As shown in FIG. 1, this example provides a fixed bed desulfurization process. The total process route is that the flue gas inlet 1 of each bin is firstly fed, the flue gas enters a reaction chamber through the inlet grid flow guide partition wall 2 to perform desulfurization reaction, then enters the next reaction chamber through the inter-chamber grid flow guide partition wall 3, and then the gas which reaches the standard after treatment is discharged through the outlet grid flow guide partition wall 4, the outlet trough plate 5 and the flue gas outlet 6 in sequence.
The specific process route comprises the following steps:
1) raw flue gas to be treated enters through a flue gas inlet 1 and then passes through an inlet grid flow guide partition wall 2. The guide plate at the front end of the module of the inlet grid flow guide partition wall 2 is in angle fit with a flue gas flow field, so that flue gas can smoothly pass through the guide plate, and closed materials are completely isolated in the reaction chamber.
2) Entering into a first reaction chamber to carry out desulfurization reaction. The reaction chamber is provided with a blanking stabilizer 9, and the middle part is also composed of a folded plate module.
3) Enters a second reaction chamber through the grid diversion partition wall 3 between the chambers. The net grid diversion partition wall 3 between the chambers divides a bin into two chambers and only allows smoke to pass through.
4) And after passing through the second reaction chamber, the treated gas is discharged. The flue gas passes through the outlet grid flow guide partition wall 4, the outlet trough plate 5 and the flue gas outlet 6 in sequence to be discharged, and finally the flue gas which reaches the standard is treated and discharged through a chimney. The outlet trough plate 5 catches minute particles that may be entrained at the end.
5) The materials are added through a top inlet and are uniformly distributed into the reaction chamber through a one-chamber butterfly buffer material guide 8. After a period of reaction, the desulfurization efficiency decreases, and at this time, part of the material can be discharged through the discharge system at the lower part. In order to prevent the phenomenon of uneven blanking caused by overlarge horizontal section of the reaction chamber, a blanking stabilizer 9 is arranged in the middle.
Example 2
The embodiment provides a blanking process, which comprises the following steps: the desulfurizer filling process is vertically arranged, the arrangement of the chambers 1 and 2 is the same, the chamber 1 is taken as an example for explanation, the material is fed from a material feeding section 7 at the top of the device, is uniformly distributed into the bin chamber through a butterfly-shaped buffer material guide 8, and can be discharged through a discharging system 10 at the lower part after the material is invalid. The discharging stabilizer 9 is arranged in the bin, so that smooth discharging is guaranteed, and the material layer is uniform.
The disclosure of the present invention is not limited to the specific embodiments, but rather to the specific embodiments, the disclosure is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (16)
1. The fixed bed desulfurization reaction device is characterized by comprising a desulfurization bin, wherein the interior of the desulfurization bin is divided into two or more desulfurization chambers which are connected in series in the horizontal direction by an interchamber grid diversion partition wall;
a desulfurizer adding section is arranged at the top of the desulfurization bin, a plurality of desulfurizer adding sites are arranged in the desulfurizer adding section, at least one desulfurizer adding site corresponds to each desulfurization chamber, and each desulfurizer adding site corresponds to one butterfly-shaped buffer material guide and one blanking stabilizer;
the two ends of the horizontal direction of the desulfurization bin are respectively provided with a flue gas inlet and a flue gas outlet, the flue gas inlet is of a neck-expanding structure, and the joint of the neck-expanding structure and the desulfurization bin is provided with an inlet grid diversion partition wall and an outlet grid diversion partition wall;
the grid diversion partition wall between the rooms comprises a plurality of partition plates which are distributed in parallel and protrude upwards, the highest positions of the partition plates which protrude upwards are fixedly connected with a vertical plate, and a gap is formed between the vertical plate and the partition plate which protrudes upwards above the vertical plate to form a channel for flue gas to flow;
the inlet grid diversion partition wall is longitudinally provided with a plurality of air equalizing plates, each air equalizing plate comprises three folded plates which are sequentially and fixedly connected, two folded plates form a certain included angle, the included angle is upward, the highest position of the included angle is positioned on the same vertical line, namely the separating line of the neck expanding structure and the desulfurization bin, the third folded plate of each air equalizing plate is a vertical plate, the vertical plate is positioned on one side of the desulfurization bin, the folded plate positioned on one side of the neck expanding structure forms a certain inclination angle with the vertical direction, and the inclination angle enables smoke in the neck expanding structure to be uniformly distributed in the inlet grid diversion partition wall;
the fixed bed desulfurization reaction device further comprises an outlet grid flow guide partition wall, the outlet grid flow guide partition wall is composed of a plurality of folded plates which are parallel in the vertical direction, each folded plate is identical in shape and is composed of a plurality of second-stage folded plates which are fixedly connected through a certain included angle, the heights of the second-stage folded plates in the smoke flowing direction rise in sequence, and the second-stage folded plate closest to the desulfurization bin is perpendicular to the bottom of the desulfurization bin.
2. The fixed bed desulfurization reaction apparatus of claim 1, wherein the upwardly convex partition plate has an inverted v-shape.
3. The fixed bed desulfurization reaction apparatus of claim 1, wherein the partition is a grid partition.
4. The fixed bed desulfurization reaction apparatus of claim 1, wherein the desulfurization agent feeding site comprises a feeding port, and a material guiding buffer is arranged below the feeding port.
5. The fixed bed desulfurization reaction device according to claim 4, wherein the material guiding buffer is a butterfly-shaped material guiding device, and the butterfly-shaped material guiding device has a plurality of material discharging slopes, and the plurality of material discharging slopes are arranged in a circumferential shape.
6. The fixed bed desulfurization reaction apparatus of claim 5, wherein the butterfly-shaped downer is composed of two conical members fixedly connected in an upper and lower configuration, the conical member positioned at the upper portion has a larger gradient and a smaller bottom radius.
7. The fixed bed desulfurization reaction apparatus according to claim 6, wherein the lower positioned conical member has a plurality of grooves on its surface, the grooves being along the generatrix direction.
8. The fixed bed desulfurization reaction device according to claim 4, wherein one blanking stabilizer is provided below each guide buffer.
9. The fixed bed desulfurization reaction device according to claim 1, wherein the blanking stabilizer is composed of a plurality of folded plates, each folded plate comprises a first folded plate, a second folded plate and a third folded plate which are connected in sequence, the first folded plate and the third folded plate are parallel and form a certain angle with the second folded plate, the second folded plate and a vertical line at the bottom of the desulfurization bin form an acute angle and are inclined downwards, the first folded plates of all the folded plates are positioned on the same line vertical to the bottom of the desulfurization bin, the second folded plates are distributed in a staggered manner, and gaps are formed among the folded plates for flue gas circulation.
10. The fixed bed desulfurization reaction device according to claim 9, wherein the angle is formed to be an obtuse angle.
11. The fixed bed desulfurization reaction apparatus of claim 9, wherein the folding plates in the blanking stabilizer are all "Z" shaped folding plates with an obtuse angle.
12. The fixed bed desulfurization reaction device of claim 1, wherein the flue gas outlet is of a constricted structure.
13. The fixed bed desulfurization reaction device of claim 1, wherein the desulfurization silo has three, one of which is a spare silo.
14. A fixed bed desulfurization reaction process carried out in the fixed bed desulfurization reaction apparatus of any one of claims 1 to 13, comprising the steps of: flue gas enters the neck-expanding structure from the flue gas inlet, enters the desulfurization bin after passing through the inlet grid flow guide partition wall, and flows to the outlet through the multi-stage inlet grid flow guide partition wall in the desulfurization bin, so that the flue gas desulfurization purification is realized.
15. The fixed bed desulfurization reaction process of claim 14, further comprising a desulfurizing agent addition step: the desulfurizer enters the desulfurization chamber from the desulfurizer feeding section, and is horizontally distributed and uniformly fed in the desulfurization chamber through the feeding stabilizer.
16. The fixed bed desulfurization reaction process of claim 14, wherein the desulfurizing agent is a particulate desulfurizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600622.XA CN112870961B (en) | 2020-12-29 | 2020-12-29 | Fixed bed desulfurization reaction device and using method thereof |
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| CN202011600622.XA CN112870961B (en) | 2020-12-29 | 2020-12-29 | Fixed bed desulfurization reaction device and using method thereof |
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| CN112870961A CN112870961A (en) | 2021-06-01 |
| CN112870961B true CN112870961B (en) | 2022-05-20 |
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