CN111569601B - Flue gas dust removal and adsorption desulfurization integrated device - Google Patents
Flue gas dust removal and adsorption desulfurization integrated device Download PDFInfo
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- CN111569601B CN111569601B CN202010372937.7A CN202010372937A CN111569601B CN 111569601 B CN111569601 B CN 111569601B CN 202010372937 A CN202010372937 A CN 202010372937A CN 111569601 B CN111569601 B CN 111569601B
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- flue gas
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- inlet pipe
- dust removal
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- 239000000428 dust Substances 0.000 title claims abstract description 151
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000003546 flue gas Substances 0.000 title claims abstract description 90
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 30
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 25
- 230000023556 desulfurization Effects 0.000 title claims abstract description 25
- 239000003463 adsorbent Substances 0.000 claims abstract description 92
- 238000003795 desorption Methods 0.000 claims abstract description 30
- 238000005507 spraying Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 38
- 239000007921 spray Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 15
- 238000000746 purification Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a flue gas dust removal and adsorption desulfurization integrated device, which comprises an outer shell, a central air inlet pipe, a louver grid dust removal body, a filtering dust removal plate net, an adsorbent supporting disc, an adsorbent, a desorption spraying component and an ash collecting pipe, wherein high-speed flue gas entering from the central air inlet pipe can impact the louver grid dust removal body, dust in high-speed flue gas flow stays on an inner baffle ring due to inertia effect, the flow of the air flow flows along the inner baffle ring to an outer baffle ring, the flow direction of the air flow is changed again when the air flow flows through the outer baffle ring, and the dust in the flue gas is separated again under the inertia effect; when the flue gas flowing out of the louver grid dust removing body flows upwards along the conical shell, in the upward flowing process, the flue gas firstly flows through the filtering dust removing plate net, dust in the flue gas is filtered and removed again, and the flue gas is equalized again when flowing through the adsorbent supporting disc, SO that the flue gas flows into the adsorbent uniformly at a low flow speed, SO 2 gas in the flue gas is adsorbed, and the integrated purification of particulate matters and gas pollutants is realized.
Description
Technical Field
The invention relates to the technical field of flue gas purification, in particular to a flue gas dust removal and adsorption desulfurization integrated device.
Background
At present, a large amount of industrial flue gas is easy to generate in the industrial production process, along with the development of technology, different types of industrial flue gas purifying treatment systems appear in the market, and the current industrial flue gas purification is usually performed by using independent units, such as a dust removing unit, a desulfurizing unit and the like, so that the environment-friendly technology chain length, high cost and complex system are caused by using the independent units to perform the purifying work respectively. Meanwhile, in the industrial flue gas dust removal and adsorption gas purification, the problems of large difference in requirements on dust removal and adsorption convection speed and difficult flow rate matching exist.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a device which can realize the functions of purifying dust in flue gas and adsorbing SO 2 in flue gas in the same equipment; and realize the dust removal under the high velocity of flow, carry out SO 2 adsorption purification under the low velocity of flow to the flue gas dust removal and the absorption desulfurization integrated device of desorption is adsorbed in succession to the flue gas.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in one general aspect, there is provided an integrated flue gas dust removal and adsorption desulfurization device, comprising an outer housing, a central air inlet pipe, a louver grid dust removal body, a filter dust removal plate mesh, an adsorbent support disc, an adsorbent, a desorption spray part and a dust collecting pipe, wherein:
the outer shell comprises a columnar shell and a conical shell, and one end of the columnar shell is communicated with the conical bottom of the conical shell to form an integrally closed accommodating space;
the central air inlet pipe is arranged in the center of the columnar shell, one end of the central air inlet pipe penetrates through the other end of the columnar shell and is communicated with the outside of the columnar shell, and the other end of the central air inlet pipe faces the conical shell;
The shutter grid dust removing body is arranged at the other end of the central air inlet pipe and comprises a plurality of corner plate rings and connecting rods, the corner plate rings are connected through the connecting rods and are arranged at intervals in a direction away from the central air inlet pipe in sequence, each corner plate ring comprises an outer baffle ring and an inner baffle ring, the outer baffle rings are identical in specification, one end of each outer baffle ring and one end of each inner baffle ring are connected to form an included angle, the other end of each outer baffle ring and the other end of each inner baffle ring extend in a direction away from the central air inlet pipe, and the section width of each inner baffle ring away from the central air inlet pipe is larger than that of an adjacent inner baffle ring close to the central air inlet pipe;
The ash collecting pipe is arranged at the cone top of the cone-shaped shell, one end of the ash collecting pipe penetrates through the cone top of the cone-shaped shell to be communicated with the outside, and the other end of the ash collecting pipe is connected with the bottom of the shutter grid dust removing body;
The filter dust removing plate net is annular, the inner annular edge of the filter dust removing plate net is arranged on the outer wall of the central air inlet pipe, and the outer annular edge of the filter dust removing plate net is arranged on the inner wall of the columnar shell;
The adsorbent support disc is arranged on one side of the filtering and dedusting plate net, which is far away from the louver grid dedusting body, the adsorbent support disc is annular, the inner annular edge of the adsorbent support disc is arranged on the outer wall of the central air inlet pipe, the outer annular edge of the adsorbent support disc is arranged on the inner wall of the columnar shell, and the adsorbent is arranged on one side of the adsorbent support disc, which is far away from the filtering and dedusting plate net;
The desorption spraying component is arranged on one side of the adsorbent, which is far away from the adsorbent supporting disc, and comprises a liquid supply pipe, an annular liquid spray pipe, a plurality of nozzles and a supporting rod, wherein one end of the liquid supply pipe is communicated with the annular liquid spray pipes, and the other end of the liquid supply pipe passes through the outer shell and is communicated with the outside; the annular liquid spraying pipe is arranged around the central air inlet pipe and is connected with the central air inlet pipe through the supporting rod; the nozzles are distributed at equal intervals on one side of the liquid supply pipe, which faces the adsorbent supporting disc;
the conical surface of the conical shell is provided with a liquid outlet for discharging spray desorption liquid.
The upper part of the columnar shell is provided with an exhaust port.
Optionally, the flue gas dust removal and adsorption desulfurization integrated device further comprises a demisting net, the demisting net is arranged on one side of the desorption spraying part, which is away from the adsorbent, the demisting net is annular, the inner annular edge of the demisting net is arranged on the outer wall of the central air inlet pipe, and the outer annular edge of the demisting net is arranged on the inner wall of the columnar shell.
Optionally, the demisting net is inclined from an outer ring edge of the demisting net to an inner ring edge of the demisting net in a direction close to the adsorbent.
Optionally, the columnar shell is provided with a loading opening and a discharging opening, the loading opening is arranged at the end part of the columnar shell far away from the conical shell, the discharging opening is arranged on the side wall of the columnar shell, and one side of the discharging opening is flush with the outer annular edge of the adsorbent supporting disc.
Optionally, the adsorbent supporting plate is divided into two layers, the lower layer of the adsorbent supporting plate is a perforated corrosion-proof plate, and the upper layer of the adsorbent supporting plate is a corrosion-proof wire mesh.
Optionally, the adsorbent supporting disk is inclined from the outer ring edge of the adsorbent supporting disk to the inner ring edge of the adsorbent supporting disk to the direction away from the filter dust removing plate net of the shutter grid dust removing body.
Optionally, the filter dust removing plate net is inclined from the outer ring edge of the filter dust removing plate net to the inner ring edge of the filter dust removing plate net to the direction close to the louver grid dust removing body.
Optionally, the flue gas dust removal and adsorption desulfurization integrated device further comprises a lower supporting and fixing rod and an upper supporting and fixing rod, wherein one end of the lower supporting and fixing rod is connected with the joint of one end of the columnar shell and the cone bottom of the cone-shaped shell, and the other end of the lower supporting and fixing rod is connected with the outer wall of the central air inlet pipe; one end of the upper supporting and fixing rod is connected to the inner wall of the columnar shell, and the other end of the upper supporting and fixing rod is connected to the outer wall of the central air inlet pipe.
The invention provides a flue gas dust removal and adsorption desulfurization integrated device, wherein a columnar shell and a conical shell form an integrally closed accommodating space, one end of a central air inlet pipe is communicated with the outside of the columnar shell, and a shutter grid dust removing body is arranged at the other end of the central air inlet pipe, so that high-speed flue gas entering from the central air inlet pipe can impact the shutter grid dust removing body; the flue gas firstly impacts the inner baffle ring, dust in the high-speed flue gas flow is separated under the action of collision and inertia force, and the dust stays on the inner baffle ring due to the inertia force; the bottom of the shutter grid dust removing body is sealed by the dust collecting pipe, so that air flows along the inner baffle ring and the outer baffle ring, and as the inner baffle ring and the outer baffle ring of the shutter grid dust removing body form an included angle, the air flow changes the flow direction again when flowing through the included angle, dust in the flue gas is separated again under the action of inertia force, and the removed dust is temporarily stored in the dust collecting pipe; when the airflow flows out from the louver grid dust removing body, the flow cross section is enlarged, the flow speed is reduced, and the turbulence of the two airflows enables the large dust formed by condensing the fine dust to be settled under the action of gravity, so that the louver grid dust removing body has the functions of dust removal and flow equalization. The flue gas that flows out shutter grid dust remover flows along the taper casing upwards, at the in-process that flows upwards, at first flows through the filtration dust removal expanded metal, the dust in the flue gas is filtered again and got rid of this moment, the flue gas is got rid of after three times and the air current flow are even, by the flow equalization again when flowing through the adsorbent supporting disk, the air current low-flow just gets into the adsorbent evenly, SO 2 gas in the flue gas is adsorbed when the air current flows through the adsorbent, the flue gas air current is got rid of dust and SO 2 gas wherein after the whole purification process all, the air current after the purification is discharged through the gas vent, possess fine practicality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a flue gas dust removal and adsorption desulfurization integrated device;
FIG. 2 is a schematic diagram of the front view structure of the shutter grid dust collector of the present invention;
FIG. 3 is a schematic top view of the louvered dust collector of the present invention;
FIG. 4 is a schematic elevational view of the desorption spray component of the present invention;
Fig. 5 is a schematic top view of the desorption shower member of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic cross-sectional structure of an integrated device for flue gas dust removal and adsorption desulfurization according to the present invention, as shown in fig. 1, the integrated device for flue gas dust removal and adsorption desulfurization according to an embodiment of the present invention includes an outer housing 1, a central air inlet pipe 2, a louver grid dust removing body 3, a filter dust removing plate net 4, an adsorbent supporting plate 5, an adsorbent 6, and an ash collecting pipe 9. In this embodiment, the flue gas dust removal and adsorption desulfurization integrated device is vertically arranged, so that the housing 1 can be divided into a cylindrical housing 11 and a conical housing 12, the cylindrical housing 11 is a cylindrical housing vertically arranged, the conical housing 12 is an inverted conical housing, and the diameter of the cylindrical housing 11 is the same as the diameter of the conical bottom of the conical housing 12. One end of the columnar housing 11 is thus communicated with the tapered bottom of the tapered housing 12 to form an integrally closed accommodation space. The central air inlet pipe 2 is cylindrical, the central air inlet pipe 2 is arranged in the center of the cylindrical shell 11, the central air inlet pipe 2 and the cylindrical shell 11 are coaxially arranged, and the diameter ratio of the diameter of the central air inlet pipe 2 to the diameter of the cylindrical shell 11 is 1: 2-1: 3; one end of the central air inlet pipe 2 passes through the other end of the columnar shell 11 upwards, namely, one end of the central air inlet pipe 2 passes through the top end of the columnar shell 11 upwards in the embodiment and then is communicated with the outside of the columnar shell 11, the other end of the central air inlet pipe 2 faces the conical shell 12, and the outside flue gas enters from one end of the central air inlet pipe 2 at a high speed and then can enter the inside of the outer shell 1 from the other end of the central air inlet pipe 2.
Fig. 2 is a schematic front view of the structure of the shutter grid dust collector of the present invention, fig. 3 is a schematic top view of the shutter grid dust collector of the present invention, and in combination with fig. 2 and 3, the shutter grid dust collector 3 is connected and disposed below the central air inlet pipe 2, specifically, the shutter grid dust collector 3 of the present embodiment includes four corner plates 31 and connecting rods 32, the four corner plates 31 are all connected in series by the connecting rods 32, the four corner plates 31 are all circular rings, each corner plate 31 includes an outer baffle ring 311 and an inner baffle ring 312, one end of the outer baffle ring 311 and one end of the inner baffle ring 312 are connected to form an included angle, the included angle is an acute angle and extends toward the central air inlet pipe 2, and the other end of the outer baffle ring 311 and the other end of the inner baffle ring 312 extend toward a direction away from the central air inlet pipe 2, and the diameter of the top layer, that is the included angle formed by the corner, is the same as the diameter of the tip of the central air inlet pipe 2, so that the tip of the corner plate ring 31 closest to the central air inlet pipe 2 is fixedly connected with the bottom of the central air inlet pipe 2, thereby making the other end of the high-speed flue gas flow from the central air inlet pipe 2 come out from the inner baffle ring 312, the inner baffle ring 312 is inclined relative to the inner baffle ring 312, and the flue gas flow is inclined relative to the inner baffle ring 312 due to the inertia of the flue gas and the inertia is changed, and the dust is separated from the inner baffle ring and the flue gas is disposed in the direction. The number of gusset rings 31 may be selected according to actual needs.
It is noted that the connecting rods 32 are vertically arranged, and the corners of the plurality of gusset rings 31 are provided with connecting holes, and the four gusset rings 31 are connected in series at equal intervals after the connecting rods 32 sequentially pass through the corresponding connecting holes. I.e. the four corner plate rings 31 are arranged at intervals in the direction away from the central air inlet pipe 2 in sequence from top to bottom. It should be noted that the number of the connecting rods 32 may be selected according to actual needs.
Further, the cross-sectional width of each inner baffle ring 312 far from the central air inlet pipe 2 is larger than that of the adjacent inner baffle ring 312 close to the central air inlet pipe 2, that is, the smaller the diameter of the inner ring edge of the inner baffle ring 312 is, the smoke firstly impacts the inner baffle ring 312, and dust in the high-speed smoke gas flow is separated under the action of collision and inertia force, and the dust stays on the inner baffle ring 312 due to the inertia effect; and the flue gas impacts the outer baffle ring 311 in the upward flowing process, so that the direction of the flue gas is changed again on the outer baffle ring 311, and dust in the flue gas is separated again under the action of inertia force, so that the dust is settled at the cone top part of the cone-shaped shell 12.
Further, the filter dust removing plate net 4 of the present embodiment is annular, the inner ring edge of the filter dust removing plate net 4 is disposed on the outer wall of the central air inlet pipe 2, the outer ring edge of the filter dust removing plate net 4 is disposed on the inner wall of the columnar shell 11, specifically, the filter dust removing plate net 4 is inclined from the outer ring edge of the filter dust removing plate net 4 to the inner ring edge of the filter dust removing plate net 4 in the direction close to the shutter grid dust removing body 3, that is, the outer side of the filter dust removing plate net 4 is high, the inner side of the filter dust removing plate net is low, that is, the filter dust removing plate net 4 looks like an inverted umbrella shape. Because the flow rate of flue gas is different, so when filtering dust removal board net 4 slope and arranging, the inboard flue gas is filtered by filtering dust removal board net 4 earlier, and then the unfiltered flue gas is filtered along filtering dust removal board net 4 from inside to outside continuously rising, and is crisscross with the lower flue gas of outside velocity of flow simultaneously, and the turbulent flow of air current makes the big dust that fine dust condensed into subsides under the effect of gravity. The filtering and dedusting plate net 4 can also filter fine dust, and is matched with the high-low flow velocity inertial sedimentation large dust action of the louver grid dedusting body to thoroughly purify dust in flue gas, so that the dust in the flue gas is prevented from being gathered to block micropores of the adsorption filter screen, the filter screen is prevented from being invalid, and a good dedusting effect is achieved. And the upper portion of the cylindrical housing 11 is provided with an exhaust port 16 for exhausting the filtered smoke. Notably, the filter dust removal plate net 4 is a ceramic filter plate, a polytetrafluoroethylene filter screen film or a pleated filter film which is corrosion-resistant.
Further, the ash collecting pipe 9 is arranged at the cone top of the cone-shaped shell 12, one end of the ash collecting pipe 9 penetrates through the cone top of the cone-shaped shell 12 and is communicated with the outside, the other end of the ash collecting pipe 9 is connected with the shutter grid dust removing body 3, and the diameter of the ash collecting pipe 9 is the same as that of the central air inlet pipe 2. And the bottom of the ash collecting pipe 9 can be closed, when the bottom of the ash collecting pipe 9 is closed, the ash collecting pipe 9 closes the bottom of the shutter grid dust removing body 3, so that the air flow can only flow along the inner baffle ring 312 to the outer baffle ring 311, and the dust settled in the shutter grid dust removing body 3 falls into the ash collecting pipe 9 and finally is discharged through the ash collecting pipe 9.
Further, the adsorbent supporting plate 5 is disposed on a side of the filter dust removing plate 4 away from the louver grid dust removing body 3, that is, above the filter dust removing plate 4 in this embodiment, and the adsorbent supporting plate 5 is annular, an inner annular edge of the adsorbent supporting plate 5 is disposed on an outer wall of the central air inlet pipe 2, an outer annular edge of the adsorbent supporting plate 5 is disposed on an inner wall of the cylindrical housing 11, the adsorbent 6 is disposed on a side of the adsorbent supporting plate 5 away from the filter dust removing plate 4, and in this embodiment, the adsorbent 6 is disposed on the adsorbent supporting plate 5, and the adsorbent supporting plate 5 is used for supporting the adsorbent 6. The outer ring edge of the adsorbent supporting disc 5 is inclined towards the shutter grid dust removing body 3 towards the direction away from the filter dust removing plate net 4, specifically, the appearance of the adsorbent supporting disc 5 is like an umbrella shape, and because the flue gas is long along the travel of the conical shell 12, the position of the inner ring edge of the central air inlet pipe 2 connected with the adsorbent supporting disc 5 is higher, so that the flue gas rising from the central air inlet pipe 2 is prolonged, the same flow velocity of the flue gas rising from each position to the adsorbent supporting disc 5 is ensured, the flue gas flows through the adsorbent supporting disc 5 again, the low flow velocity of the flue gas uniformly enters the adsorbent 6, the contact time and the flow velocity of the flue gas and the adsorbent 6 are also the same, and the adsorbent 6 is fully utilized. When the flue gas flows through the adsorbent 6, impurity gases such as SO 2 and the like in the flue gas are adsorbed, and the purified flue gas is discharged from the flue gas outlet 16. Through the flue gas dust removal and absorption desulfurization integrated device that this embodiment has set up adsorbent supporting disk 5 and adsorbent 6, flue gas air current is got rid of dust and SO 2 after whole process, has realized the integration purification of flue gas, is worth noting that adsorbent supporting disk 5 has two-layer structure, and the lower floor of adsorbent supporting disk 5 is perforation rate not less than 80%, and the aperture is at foraminiferous anticorrosive plate structure of 3-8mm, and the upper strata is 2 ~ 3 layers of anticorrosive wire mesh of staggered arrangement that the mesh is less than 2 mm. The umbrella-shaped outer edge of the adsorbent supporting disc 5 and the central air inlet pipe 2 are positioned on the same horizontal line, and the included angle between the umbrella-shaped generatrix of the adsorbent supporting disc 5 and the horizontal plane is 30 degrees.
Because the central air inlet pipe 2 and the columnar shell 11 are coaxially arranged, under the same flow, the mathematical relationship that the flow velocity is inversely proportional to the square of the radius exists, and the basis is v 1×r1 2＝v2×r2 2, (v and r are respectively the hydraulic equivalent radius and the flow velocity), so that the matching between the high flow velocity of inertial dust removal when air is introduced from the central air inlet pipe 2 and the low flow velocity required when gas adsorption is completed in the adsorbent 6 is realized, the dust removal and adsorption of the mixture ratio of the high flow velocity and the low flow velocity are integrated into one device, the purification of particulate matters and gas pollutants in the flue gas dust removal and adsorption desulfurization integrated device is realized, and under the condition of the low flow velocity, the contact between the flue gas and the adsorbent is more sufficient on the air flow path, and the service life of the adsorbent is prolonged.
Further, a loading opening 13 and a discharging opening 14 are arranged on the columnar shell 11, the loading opening 13 is arranged at the end part of the columnar shell 11 far away from the conical shell 12, the discharging opening 14 is arranged on the side wall of the columnar shell 11, one side of the discharging opening 14 is flush with the outer annular edge of the adsorbent supporting disc 5, the loading opening 13 is used for loading the adsorbent 6, and the discharging opening 14 is used for cleaning the spent adsorbent 6.
Fig. 4 is a schematic front view of the desorption spraying component of the present invention, and fig. 5 is a schematic top view of the desorption spraying component of the present invention, where the integrated device for flue gas dust removal and adsorption desulfurization further includes a desorption spraying component 7, and the desorption spraying component 7 is disposed above the adsorbent 6, i.e. on a side of the adsorbent 6 away from the adsorbent support disc 5. The desorption shower unit 7 includes a liquid supply pipe 71, an annular liquid spray pipe 72, a plurality of nozzles 73, and a support rod 74, and the difference between the diameter of the annular shape of the annular liquid spray pipe 72 and the diameter of the central air intake pipe 2 is the same as the difference between the diameter of the annular shape of the annular liquid spray pipe 72 and the diameter of the columnar casing 11. One end of the liquid supply pipe 71 is communicated with the annular liquid spray pipe 72, and the other end of the liquid supply pipe 71 passes through the outer shell 1 to be communicated with the outside; the annular liquid spraying pipe 72 is arranged around the central air inlet pipe 2, and the annular liquid spraying pipe 72 is connected with the central air inlet pipe 2 through a supporting rod 74. The nozzles 73 are equally spaced on the side of the liquid supply tube 71 facing the adsorbent support disk 5. The conical surface of the conical shell 12 is provided with a liquid outlet 15 for discharging spray liquid. The liquid sprayed by the annular spray pipe 72 can clean the adsorbent 6, when SO 2 adsorbed by the adsorbent 6 is close to saturation, the adsorbent 6 can be desorbed by spraying the desorption liquid, SO that the complexity of the traditional double-tower design for adsorption and desorption is reduced, and the desorption liquid can be discharged from the liquid outlet 15 after being used. It is worth noting that the desorption spraying component of this embodiment uses desorption liquid to desorb the adsorbent that has been adsorbed and saturated, and the normal ventilation of flue gas during desorption is not interrupted, and the desorption liquid may be clear water or dilute sulfuric acid. The embodiment simultaneously realizes the purification of dust and gas pollutants in the flue gas in one device, and the adsorption and desorption of the gas can be simultaneously carried out, thereby ensuring the continuity of continuous flue gas purification and reducing the process of arranging the purifying equipment by units independently and the occupied area of environmental protection equipment.
Furthermore, because spray desorption liquid can generate spray, the flue gas dust removal and adsorption desulfurization integrated device further comprises a demisting net 8, wherein the demisting net 8 is arranged on one side of the desorption spraying part 7, which is far away from the adsorbent 6, the demisting net 8 is annular, the inner ring edge of the demisting net 8 is arranged on the outer wall of the central air inlet pipe 2, the outer ring edge of the demisting net 8 is arranged on the inner wall of the columnar shell 11, the demisting net 8 is inclined from the outer ring edge of the demisting net 8 to the inner ring edge of the demisting net 8 towards the direction close to the adsorbent 6, that is, the appearance of the dust filtering plate net 4 is like an inverted umbrella shape, and the spray generated by spray desorption liquid is removed through the demisting net 8.
Furthermore, the integrated device for flue gas dust removal and adsorption desulfurization further comprises two groups of supporting and fixing rods 10, wherein the supporting and fixing rods 10 are respectively a lower supporting and fixing rod group and an upper supporting and fixing rod group, four lower supporting and fixing rods are arranged in each lower supporting and fixing rod group, one end of each lower supporting and fixing rod is connected with the joint of one end of the columnar shell and the cone bottom of the cone-shaped shell, and the other end of each lower supporting and fixing rod is connected with the outer wall of the central air inlet pipe 2; four upper supporting and fixing rods are arranged in each upper supporting and fixing rod group, one end of each upper supporting and fixing rod is connected to the inner wall of the columnar shell, the other end of each upper supporting and fixing rod is connected to the outer wall of the central air inlet pipe 2, and the lower supporting and fixing rods and the upper supporting and fixing rods are used for supporting the central air inlet pipe 2 and guaranteeing the stability of the central air inlet pipe 2. It should be noted that the number of the lower support fixing bars and the upper support fixing bars may be selected according to actual needs.
The embodiment of the specification provides a flue gas dust removal and adsorption desulfurization integrated device, because a columnar shell and a conical shell form an integrally closed accommodating space, one end of a central air inlet pipe is communicated with the outside of the columnar shell, and a shutter grid dust removing body is arranged at the other end of the central air inlet pipe, so that high-speed flue gas entering from the central air inlet pipe can impact the shutter grid dust removing body; the flue gas firstly impacts the inner baffle ring, dust in the high-speed flue gas flow is separated under the action of collision and inertia force, and the dust stays on the inner baffle ring due to the inertia force; the bottom of the shutter grid dust removing body is sealed by the dust collecting pipe, so that air flows along the inner baffle ring and the outer baffle ring, and as the inner baffle ring and the outer baffle ring of the shutter grid dust removing body form an included angle, the air flow changes the flow direction again when flowing through the included angle, dust in the flue gas is separated again under the action of inertia force, and the removed dust is temporarily stored in the dust collecting pipe; when the air flow flows out from the louver grid dust removing body, the flow cross section is enlarged, the flow speed is reduced, and the turbulence of the two air flows ensures that the large dust formed by condensing the fine dust is settled under the action of gravity, so that the louver grid dust removing body has the functions of removing dust and condensing the air flow. The flue gas that flows out shutter grid dust remover flows along the taper casing upwards, at the in-process that flows upwards, at first flows through the filtration dust removal expanded metal, the dust in the flue gas is filtered again and got rid of this moment, the flue gas is got rid of and is flowed through the adsorbent supporting disk after three times and the air current flow are flowed through again, the air current low-flow rate just gets into the adsorbent evenly, SO2 gas in the flue gas is adsorbed when the air current flows through the adsorbent, the flue gas air current is got rid of dust and SO2 gas wherein after whole purification process all, the air current after the purification is discharged through the gas vent, possess fine practicality.
It should be noted that the cross-sectional shapes of the outer casing 1 and the central air intake pipe 2 are not limited to the circular shape, the square shape or other positive polygon in the present embodiment, and may be selected according to practical needs.
The foregoing describes specific embodiments of the present disclosure. Other embodiments are within the scope of the following claims. It should be noted that modifications and adaptations to the present application may occur to one skilled in the art without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.
Claims (6)
1. The utility model provides a flue gas dust removal and absorption desulfurization integrated device, its characterized in that includes shell body, central intake pipe, tripe grid dust removal body, filtration dust removal expanded metal, adsorbent supporting disk, adsorbent, desorption spray part and album ash pipe, wherein:
the outer shell comprises a columnar shell and a conical shell, and one end of the columnar shell is communicated with the conical bottom of the conical shell to form an integrally closed accommodating space;
The central air inlet pipe is arranged in the center of the columnar shell, one end of the central air inlet pipe penetrates through the other end of the columnar shell to be communicated with the outside of the columnar shell, and the other end of the central air inlet pipe faces the conical shell;
The louver grid dust removing body is arranged at the other end of the central air inlet pipe and comprises a plurality of corner plate rings and connecting rods, the corner plate rings are connected through the connecting rods, the corner plate rings are sequentially arranged at intervals in the direction away from the central air inlet pipe, each corner plate ring comprises an outer baffle ring and an inner baffle ring, the specifications of each outer baffle ring are the same, one end of each outer baffle ring is connected with one end of each inner baffle ring to form an included angle, the other end of each outer baffle ring and the other end of each inner baffle ring extend in the direction away from the central air inlet pipe, and the section width of each inner baffle ring away from the central air inlet pipe is larger than that of an adjacent inner baffle ring close to the central air inlet pipe;
The ash collecting pipe is arranged at the cone top of the cone-shaped shell, one end of the ash collecting pipe penetrates through the cone top of the cone-shaped shell to be communicated with the outside, and the other end of the ash collecting pipe is connected with the bottom of the shutter grid dust removing body;
The filter dust removal plate net is annular, the inner annular edge of the filter dust removal plate net is arranged on the outer wall of the central air inlet pipe, and the outer annular edge of the filter dust removal plate net is arranged on the inner wall of the columnar shell;
The adsorbent support disc is arranged on one side of the filtering and dedusting plate net, which is far away from the shutter grid dedusting body, the adsorbent support disc is annular, the inner annular edge of the adsorbent support disc is arranged on the outer wall of the central air inlet pipe, the outer annular edge of the adsorbent support disc is arranged on the inner wall of the columnar shell, and the adsorbent is arranged on one side of the adsorbent support disc, which is far away from the filtering and dedusting plate net;
The desorption spraying component is arranged on one side of the adsorbent, which is far away from the adsorbent supporting disc, and comprises a liquid supply pipe, an annular liquid spraying pipe, a plurality of nozzles and a supporting rod, wherein one end of the liquid supply pipe is communicated with the annular liquid spraying pipes, and the other end of the liquid supply pipe is communicated with the outside through the outer shell; the annular liquid spraying pipe is arranged around the central air inlet pipe and is connected with the central air inlet pipe through the supporting rod; the nozzles are distributed at equal intervals on one side of the liquid supply pipe, which faces the adsorbent supporting disc;
a liquid outlet is arranged on the conical surface of the conical shell and is used for discharging spray desorption liquid;
the upper part of the columnar shell is provided with an exhaust port;
the desorption spraying component is arranged on one side of the central air inlet pipe, the desorption spraying component is arranged on the other side of the central air inlet pipe, and the desorption spraying component is arranged on the other side of the central air inlet pipe;
the adsorbent supporting plate is divided into two layers, the lower layer of the adsorbent supporting plate is provided with a perforated anti-corrosion plate, and the upper layer of the adsorbent supporting plate is provided with an anti-corrosion wire mesh.
2. The flue gas dust removal and adsorption desulfurization integrated device according to claim 1, wherein the demisting net is inclined from an outer ring edge of the demisting net to an inner ring edge of the demisting net in a direction approaching the adsorbent.
3. The integrated flue gas dust removal and adsorption desulfurization device according to any one of claims 1 to 2, wherein a charging port and a discharging port are arranged on the columnar shell, the charging port is arranged at the end part of the columnar shell far away from the conical shell, the discharging port is arranged on the side wall of the columnar shell, and one side of the discharging port is flush with the outer annular edge of the adsorbent supporting disc.
4. The integrated flue gas dust removal and adsorption desulfurization device according to any one of claims 1 to 2, wherein the adsorbent support plate is inclined from an outer circumferential edge of the adsorbent support plate to an inner circumferential edge of the adsorbent support plate toward the louver grid dust removal body in a direction away from the filter dust removal plate net.
5. The integrated flue gas dust removal and adsorption desulfurization device according to any one of claims 1 to 2, wherein the filter dust removal plate net is inclined from an outer ring edge of the filter dust removal plate net to an inner ring edge of the filter dust removal plate net in a direction approaching the louver grid dust removal body.
6. The integrated flue gas dust removal and adsorption desulfurization device according to any one of claims 1 to 2, further comprising a lower support fixing rod and an upper support fixing rod, wherein one end of the lower support fixing rod is connected to a junction between one end of the columnar housing and a cone bottom of the cone-shaped housing, and the other end of the lower support fixing rod is connected to an outer wall of the central air inlet pipe; one end of the upper supporting and fixing rod is connected to the inner wall of the columnar shell, and the other end of the upper supporting and fixing rod is connected to the outer wall of the central air inlet pipe.
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| CN112933848A (en) * | 2021-02-26 | 2021-06-11 | 常春振 | A glance coal clarification plant for highway engineering construction usefulness |
| CN116351200B (en) * | 2023-06-01 | 2023-09-05 | 中国华能集团清洁能源技术研究院有限公司 | Flue gas adsorption system and material changing method thereof |
| CN116832575B (en) * | 2023-07-31 | 2024-05-10 | 河南平煤神马聚碳材料有限责任公司 | PSA adsorption equipment for polycarbonate production |
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