CN210229575U

CN210229575U - Desulfurization and filtration integrated device

Info

Publication number: CN210229575U
Application number: CN201920865321.6U
Authority: CN
Inventors: Long Yan; 闫龙; Cui Zhang; 张翠
Original assignee: China Chemical Engineering Second Construction Corp
Current assignee: China Chemical Engineering Second Construction Corp
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-03
Anticipated expiration: 2029-06-11

Abstract

The utility model relates to a desulfurization filters integrated device, including the desulfurizing tower body, desulfurizing tower body side is provided with flue gas inlet and exhanst gas outlet, the inside removal bed that is provided with of desulfurizing tower, the flue gas gets into the desulfurizing tower body from flue gas inlet, discharge from exhanst gas outlet after moving the bed through, remove the double mobile bed that the bed is independent layout, the one-level that is "V" shape including the cross-section removes bed and second grade and removes the bed, the throat portion that one-level removed bed and second grade removed the bed is close to or meets, and set up first baffle near or department of meeting, the both sides that one-level removed bed and second grade removed the bed are provided with the venetian blind formula one-level that is used for placing. The utility model discloses in, through arranging "V" shape double-bed independently for device area is less, and has improved filtration efficiency greatly.

Description

Desulfurization and filtration integrated device

Technical Field

The utility model belongs to the environmental engineering field, in particular to desulfurization filters integrated device.

Background

The method can be used for discharging a large amount of flue gas containing pollutants such as sulfur dioxide (SO 2), particulate matters and the like while consuming energy in the industries such as thermal power, coking, steel and other industrial kilns. At present, the flue gas purification technology also makes great progress, and effectively inhibits the deterioration of atmospheric environment. The removal of sulfur dioxide mainly comprises wet method, semi-dry method, dry method and other technologies; the particulate matter removing method mainly comprises the technologies of electric dust removal, cloth bag dust removal or electric bag compounding and the like.

The wet desulphurization process is mainly applied to the thermal power industry, is usually matched with a cloth bag or electric bag composite dust removal process, has high sulfur dioxide and particulate matter content in flue gas discharged by the industry, has high pollution removal efficiency, but can generate large desulphurization waste water which is difficult to treat by wet desulphurization, occupies large area and is complicated to operate.

The dry and semi-dry desulfurization process can effectively solve the problem that the wet desulfurization waste water is difficult to treat, and save a large amount of water resources. Meanwhile, the method can be placed in front of an SCR denitration device, poisoning of the SCR denitration catalyst caused by ammonium bisulfate, tar and the like is avoided, and the method is widely applied to industries such as coking, steel and the like.

The typical semi-dry method is mainly rotary spraying, and the rear end of the semi-dry method is provided with a cloth bag for dust removal, the semi-dry method is mainly applied to the condition that the flue gas temperature is lower than 250 ℃, otherwise, the cloth bag filter material for the rear end of the dust removal needs to be a special inorganic material filter material, and the inorganic material filter material has poor toughness and short service life. The whole occupied area is large, and the investment and the operating cost are high.

The dry desulfurization is mostly applied by circulating fluidized bed and flue spraying desulfurizer superfine powder, both methods need to be used by matching with cloth bag dust removal at the rear end, and the requirements on dust removal filter materials are high. The flue spraying desulfurizer superfine powder technology has small floor area and small first investment; however, the desulfurized powder needs to be captured by a rear-end dust collector, which causes a large dust removal pressure.

The moving bed dry desulfurization adopts a granular desulfurizer, the desulfurizer moves by gravity to form a moving bed, and the flue gas contacts with the moving bed in a cross flow manner to realize flue gas desulfurization; meanwhile, the moving bed particle layer has a certain dust removal function, and can realize the simultaneous removal of flue gas sulfur dioxide, particulate matters, tar and the like. However, the currently applied moving bed desulfurization devices occupy a large area, are all single moving beds, still use desulfurization as a main function within a certain resistance range, and have poor dust removal compatibility, so that the currently used moving bed desulfurization devices have low dust removal efficiency and a small application range of flue gas.

Disclosure of Invention

The utility model provides a desulfurization filters integrated device aims at solving current removal bed dry process desulfurization area great, and desulfurization dust collection efficiency is low, the poor technical problem of suitability.

In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a desulfurization filters integrated device, including the desulfurizing tower body, desulfurizing tower body side is provided with flue gas inlet and exhanst gas outlet, the inside removal bed that is provided with of desulfurizing tower, the flue gas gets into the desulfurizing tower body from flue gas inlet, discharge from exhanst gas outlet after moving the bed through flowing through, it is the double mobile bed of independent arrangement to move the bed, the one-level including the cross-section be "V" shape moves bed and second grade and removes the bed, the throat portion that one-level moved bed and second grade moved the bed is close to or meets, and be close to or meet the department and set up first baffle, the both sides that one-level moved bed and second grade moved the bed are provided with the louver formula one.

Furthermore, at least one second clapboard is arranged along the height direction of the desulfurizing tower body, the second clapboard divides the desulfurizing tower body into two sections or more than two sections, a double moving bed is arranged in each section, and a flue gas channel for flue gas between the two adjacent sections to pass through is arranged on the second clapboard.

Furthermore, a transition section is arranged between the two sections of the desulfurizing tower, a double-moving bed is arranged in the transition section, and two sides of each moving bed are provided with an unvented sealing plate for placing filter materials.

Furthermore, the height H of the transition section is more than or equal to 3 (L1 + L2), L1 is the thickness of the first-stage moving bed, and L2 is the thickness of the second-stage moving bed.

Furthermore, the horizontal included angle of the louver of the primary material blocking wall ranges from 30 degrees to 60 degrees, and the horizontal included angle of the louver of the secondary material blocking wall ranges from 45 degrees to 80 degrees.

Furthermore, the outer sides of the first-stage material blocking wall and the second-stage material blocking wall are provided with leakage-proof nets, and the leakage-proof nets are metal wire nets with the aperture being 0.5-0.75 times of the diameter of the desulfurizer filter material.

Furthermore, a first-stage filter material feeding port and a second-stage filter material feeding port are respectively arranged at the top of the desulfurizing tower body, the first-stage filter material feeding port is connected with a first-stage filter material discharging bin, the second-stage filter material feeding port is connected with a second-stage filter material discharging bin, and the first-stage filter material discharging bin and the second-stage filter material discharging bin are separated by a third partition plate; the first-stage filter material discharging bin is communicated with the first-stage moving bed, and the second-stage filter material discharging bin is communicated with the second-stage moving bed; the bottom of the desulfurization tower is provided with a primary filter material feed opening and a secondary filter material feed opening which are respectively communicated with the primary moving bed and the secondary moving bed.

Furthermore, inclined plates convenient for discharging are arranged in the first-stage filter material discharging bin and the second-stage filter material discharging bin.

Furthermore, the primary filter material feed opening and the secondary filter material feed opening are conical.

The utility model provides an among the two removal bed doublestage desulfurizer filter material desulfurization filtration integrated device, through independently arranging the two beds of v-arrangement for device area is less, and has improved its filtration efficiency, and through the desulfurizer filter material that adopts different particle diameters, can also satisfy the dust removal requirement when satisfying the desulfurization.

Drawings

Fig. 1 is a front view provided by the present invention.

Fig. 2 is a top view of the lower section provided by the present invention.

Fig. 3 is a top view of the upper section provided by the present invention.

Fig. 4 is a schematic structural diagram of a moving bed provided by the present invention.

1-a desulfurizing tower body, 2-a flue gas inlet, 3-a flue gas outlet, 4-a first-stage moving bed, 5-a second-stage moving bed, 6-a first partition plate, 7-a first-stage material blocking wall, 8-a second-stage material blocking wall, 9-a second partition plate, 10-an unvented sealing plate, 11-an anti-leakage net, 12-a first-stage filter material feeding port, 13-a second-stage filter material feeding port, 14-a first-stage filter material discharging bin, 15-a second-stage filter material discharging bin, 16-a third partition plate, 17-a first-stage filter material discharging port, 18-a second-stage filter material discharging port and 19-a desulfurizing tower.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, according to the utility model discloses a typical embodiment provides a desulfurization and filtration integrated device, including desulfurizing tower body 1, desulfurizing tower body 1 side is provided with flue gas inlet 2 and exhanst gas outlet 3, the inside removal bed that is provided with of desulfurizing tower, flue gas gets into desulfurizing tower body 1 from flue gas inlet 2, discharge from exhanst gas outlet 3 behind the removal bed is moved in the flow, remove the double mobile bed that the bed is independent layout, the one-level including the cross-section be "V" shape removes bed 4 and second grade and removes bed 5, the throat portion that the one-level removed bed 4 and second grade removed bed 5 is close to or meets, and set up first baffle 6 near or meeting the department, the one-level removes the both sides of bed 4 and second grade window formula removal bed 5 and is provided with shutter one-level material retaining wall 7 and second grade material retaining. In this embodiment, the shape of the desulfurizing tower body 1 is rectangular or other similar shapes, the material blocking wall is made of air permeable louver type, a first-stage moving bed 4 is formed according to the shape design of "<", a second-stage moving bed 5 is formed according to the shape design of ">", the necking parts of the two moving beds are close to or connected, a vertical first partition plate 6 is arranged in the middle of the material blocking wall to separate the two moving beds, so that two moving beds are formed in an independent arrangement mode, a desulfurizing agent filter material is filled in the moving beds, and the flue gas passes through the two moving beds respectively to achieve the desulfurizing and filtering effects. The adoption of the independent arrangement of the V-shaped double moving beds can greatly improve the utilization rate of the internal space of the desulphurization device and reduce the occupied area of the device. On the other hand, the shutter type material blocking wall can reduce the flowing resistance of the smoke. If the dedusting filter material is filled in one of the moving beds, the device can filter dust in the flue gas during flue gas desulfurization so as to be suitable for various flue gases and improve the applicability of the equipment.

In a preferred embodiment, at least one second partition board 9 is arranged along the height direction of the desulfurization tower body 1, the second partition board 9 divides the desulfurization tower body 1 into two or more sections, a double moving bed is arranged in each section, and a flue gas channel for flue gas between the two adjacent sections to pass through is arranged on the second partition board 9. The second partition plate 9 is used for dividing the desulfurizing tower into two sections and more than two ends along the height, so that the flue gas can be filtered for many times under the condition of not increasing the volume of the device, and the filtering efficiency of the device is greatly improved.

In a preferred embodiment, a transition section is arranged between two sections of the desulfurizing tower, a double moving bed is arranged in the transition section, and two sides of each moving bed are provided with an unvented sealing plate 10 for placing filter materials. By increasing the airflow resistance in the transition section, the flue gas can completely pass through each moving bed, so that the overall purification efficiency of the device is improved.

In a preferred embodiment, the height H of the transition section is not less than 3 (L1 + L2), L1 is the thickness of the primary moving bed 4, and L2 is the thickness of the secondary moving bed 5. The gas flow resistance in the transition section can be improved by increasing the height of the transition section, and the preferred height H of the transition section is more than or equal to 3 (L1 + L2), wherein L1 is the thickness of the primary moving bed 4, and L2 is the thickness of the secondary moving bed 5.

In the preferred embodiment, the horizontal included angle of the louver of the primary material blocking wall 7 ranges from 30 degrees to 60 degrees, and the horizontal included angle of the louver of the secondary material blocking wall 8 ranges from 45 degrees to 80 degrees. The horizontal included angle of the louver of the general first-stage material blocking wall 7 is not more than the horizontal included angle of the louver of the second-stage material blocking wall 8. The filter material particle size is the same, and the horizontal contained angle of the shutter of two dam walls is the same.

In a preferred embodiment, the outer sides of the first-stage material blocking wall 7 and the second-stage material blocking wall 8 are provided with a leakage-proof net 11, and the leakage-proof net 11 is a metal wire net with the aperture being 0.5-0.75 times of the diameter of a desulfurizer filter material. The anti-leakage net 11 can prevent the small-particle-size filter material in the moving vehicle from falling out of the gap of the material blocking wall, reduce the waste of the filter material and greatly save the energy.

In a preferred embodiment, a first-stage filter material feeding port 12 and a second-stage filter material feeding port 13 are respectively arranged at the top of the desulfurizing tower body 1, the first-stage filter material feeding port 12 is connected with a first-stage filter material discharging bin 14, the second-stage filter material feeding port 13 is connected with a second-stage filter material discharging bin 15, and the first-stage filter material discharging bin 14 and the second-stage filter material discharging bin 15 are separated by a third partition plate 16; the primary filter material discharging bin 14 is communicated with the primary moving bed 4, and the secondary filter material discharging bin 15 is communicated with the secondary moving bed 5; the bottom of the desulfurization tower is provided with a primary filter material feed opening and a secondary filter material feed opening 18 which are respectively communicated with the primary moving bed 4 and the secondary moving bed 5. Through feed inlet and lower feed bin can be convenient add the interpolation filter material toward moving the bed, remove desulfurization tower bottom baffle 19 can conveniently control the state that opens and shuts of each removal bed feed opening, can conveniently change the filter material through the above setting, make the device operation more simple and convenient, promoted work efficiency.

In a preferred embodiment, inclined plates for facilitating blanking are arranged in the first-stage filter material blanking bin 14 and the second-stage filter material blanking bin 15. The angle of the inclined plate is at least larger than the repose angle of the desulfurizer, so that the blanking is convenient.

In the preferred embodiment, the primary filter media feed opening and the secondary filter media feed opening 18 are configured in a conical shape. The feed opening is conical, and the angle of the inclined plate with the horizontal included angle is at least larger than the repose angle of the desulfurizer. The embodiment can discharge waste materials more easily, and make the device more convenient to operate

According to a specific exemplary aspect of the present invention, there is now provided the following embodiments:

as shown in fig. 1, the dual moving bed adopts desulfurizer filter materials with the same or different particle sizes, the desulfurizer filter material of the first-stage moving bed 4 is selected to have a particle diameter of 0.5 mm-6 mm, a thickness L1 of 200 mm-600 mm, the desulfurizer filter material of the second-stage moving bed 5 is selected to have a particle diameter of 2 mm-8 mm, and a thickness L2 of 400 mm-800 mm; the horizontal included angle of the louver type material blocking wall louver of the primary moving bed 4 is 30-60 degrees, and the horizontal included angle of the louver type material blocking wall louver of the secondary moving bed 5 is 45-80 degrees.

The desulfurizing tower has upper and lower sections separated by the second partition board 9, and one transition section with height H not less than 3 (L1 + L2) and no louver and no ventilating sealing plate 10 is set between the moving beds.

In this embodiment, the flue gas divides both sides entering desulfurizing tower hypomere one-level to remove bed 4 through the import, divides both sides entering hypomere second grade to remove bed 5 and carries out the secondary desulfurization dust removal after preliminary desulfurization dust removal, and the flue gas after the secondary desulfurization dust removal rises and moves bed 5 through the fresh second grade of upper segment, carries out the cubic desulfurization dust removal, and last fresh one-level of upper segment moves bed 4, carries out final desulfurization essence and strains, and clean gas is discharged through exhanst gas outlet 3. When the desulfurizing tower is larger than two sections, the final moving bed through which the flue gas passes should be a small-particle-size desulfurizing agent filter material.

The test data of this example are as follows:

data 1 temperature 250 ℃, SO2 content 600mg/Nm3, dust content 800mg/Nm3, and dust average particle size 10 μm. A CaO-based desulfurizer is adopted, the grain size of a primary desulfurizer is 0.5mm, and the grain size of a secondary desulfurizer is 6 mm; the apparent gas velocity is 0.3 m/s; the thickness L1=200mm is selected for the first-stage moving bed 4, and the thickness L2=400mm is selected for the second-stage moving bed 5; the airspeed of the primary moving bed 4 is 800h < -1 >, and the airspeed of the secondary moving bed 5 is 400h < -1 >; the moving speed of the first-stage moving bed 4 is 2m/h, and the moving speed of the second-stage moving bed 5 is 4 m/h; as a result, the SO2 removal was 96% and the soot removal was 99%, with a pressure drop of 1740Pa.

Data 2. temperature 250 ℃, SO2 content 600mg/Nm3, dust content 800mg/Nm3, and dust average particle size 10 μm. A CaO-based desulfurizer is adopted, the grain size of a primary desulfurizer is 2mm, and the grain size of a secondary desulfurizer is 6 mm; the apparent gas velocity is 0.3 m/s; the thickness L1=200mm is selected for the first-stage moving bed 4, and the thickness L2=400mm is selected for the second-stage moving bed 5; the airspeed of the primary moving bed 4 is 800h < -1 >, and the airspeed of the secondary moving bed 5 is 400h < -1 >; the moving speed of the first-stage moving bed 4 is 2m/h, and the moving speed of the second-stage moving bed 5 is 4 m/h; as a result, the SO2 removal rate was 93% and the soot removal rate was 96%, and the pressure drop was 1020Pa.

Data 3. temperature 250 ℃, SO2 content 600mg/Nm3, dust content 800mg/Nm3, and dust average particle size 10 μm. A CaO-based desulfurizer is adopted, the grain size of a primary desulfurizer is 6mm, and the grain size of a secondary desulfurizer is 6 mm; the apparent gas velocity is 0.3 m/s; the thickness L1=200mm is selected for the first-stage moving bed 4, and the thickness L2=400mm is selected for the second-stage moving bed 5; the airspeed of the primary moving bed 4 is 800h < -1 >, and the airspeed of the secondary moving bed 5 is 400h < -1 >; the moving speed of the first-stage moving bed 4 is 2m/h, and the moving speed of the second-stage moving bed 5 is 4 m/h; as a result, the SO2 removal was 87% and the soot removal was 82%, with a pressure drop of 410Pa.

Data 4. temperature 250 ℃, SO2 content 600mg/Nm3, dust content 800mg/Nm3, and dust average particle size 10 μm. A CaO-based desulfurizer is adopted, the grain size of a primary desulfurizer is 6mm, and the grain size of a secondary desulfurizer is 6 mm; the apparent gas velocity is 0.3 m/s; the thickness L1=400mm is selected for the first-stage moving bed 4, and the thickness L2=400mm is selected for the second-stage moving bed 5; the airspeed of the two-stage desulfurizer filter material moving bed is 400h < -1 >; the moving speed of the two-stage desulfurizer filter material moving bed is 2 m/h; as a result, the SO2 removal rate was 91%, the soot removal rate was 85%, and the pressure drop was 690Pa.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a desulfurization filters integrated device, includes the desulfurizing tower body, and desulfurizing tower body side is provided with exhanst gas inlet and exhanst gas outlet, and the inside removal bed that is provided with of desulfurizing tower, flue gas follow the exhanst gas inlet gets into the desulfurizing tower body, flows through and discharges its characterized in that from exhanst gas outlet after removing the bed: the moving bed is an independently arranged double-moving bed and comprises a first-stage moving bed and a second-stage moving bed, the cross sections of the first-stage moving bed and the second-stage moving bed are V-shaped, the necking parts of the first-stage moving bed and the second-stage moving bed are close to or connected, a first partition plate is arranged at the close or connected part, and a louver type first-stage material blocking wall and a second-stage material blocking wall for placing filter materials are respectively arranged on two sides of the first-stage moving bed and the second-.

2. The integrated desulfurization and filtration device of claim 1, wherein: at least one second clapboard is arranged along the height direction of the desulfurizing tower body, the desulfurizing tower body is divided into two sections or more than two sections by the second clapboard, the double moving beds are arranged in each section, and a flue gas channel for flue gas between the two adjacent sections to pass through is arranged on the second clapboard.

3. The integrated desulfurization and filtration device according to claim 2, wherein: a transition section is arranged between two sections of the desulfurizing tower, a double-moving bed is arranged in the transition section, and two sides of each moving bed are provided with an unvented sealing plate for placing filter materials.

4. The integrated desulfurization and filtration device of claim 3, wherein: the height H of the transition section is more than or equal to 3 (L1 + L2), L1 is the thickness of the first-stage moving bed, and L2 is the thickness of the second-stage moving bed.

5. The integrated desulfurization and filtration apparatus according to claim 1, 2, or 3, wherein: the horizontal included angle range of the louver of the primary material blocking wall is 30-60 degrees, and the horizontal included angle range of the louver of the secondary material blocking wall is 45-80 degrees.

6. The integrated desulfurization and filtration device of claim 4, wherein: the outer sides of the first-stage material blocking wall and the second-stage material blocking wall are provided with leakage-proof nets, and the leakage-proof nets are metal wire nets with the aperture being 0.5-0.75 times of the diameter of the desulfurizer filter material.

7. The integrated desulfurization and filtration device of claim 5, wherein: the top of the desulfurizing tower body is respectively provided with a first-stage filter material feeding port and a second-stage filter material feeding port, the first-stage filter material feeding port is connected with a first-stage filter material discharging bin, the second-stage filter material feeding port is connected with a second-stage filter material discharging bin, and the first-stage filter material discharging bin and the second-stage filter material discharging bin are separated by a third partition plate; the first-stage filter material discharging bin is communicated with the first-stage moving bed, and the second-stage filter material discharging bin is communicated with the second-stage moving bed; and a primary filter material feed opening and a secondary filter material feed opening which are respectively communicated with the primary moving bed and the secondary moving bed are arranged at the bottom of the desulfurization tower.

8. The integrated desulfurization and filtration device of claim 6, wherein: the inclined plates convenient for blanking are arranged in the first-stage filter material blanking bin and the second-stage filter material blanking bin.

9. The integrated desulfurization and filtration device of claim 7, wherein: the first-stage filter material feed opening and the second-stage filter material feed opening are conical.