CN110639284A - Exhaust funnel and method for wet dust removal and purification - Google Patents
Exhaust funnel and method for wet dust removal and purification Download PDFInfo
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- CN110639284A CN110639284A CN201910924639.1A CN201910924639A CN110639284A CN 110639284 A CN110639284 A CN 110639284A CN 201910924639 A CN201910924639 A CN 201910924639A CN 110639284 A CN110639284 A CN 110639284A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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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
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- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention discloses an exhaust funnel and a method for wet dust removal and purification, and the exhaust funnel comprises a cylinder body, a core pipe, a spiral partition plate, a heating mechanism and a water collecting funnel, wherein the core pipe is arranged in the cylinder body, the heating mechanism is arranged at the top end of the core pipe and is used for heating dehydrated smoke, the water collecting funnel is arranged at the bottom of the cylinder body of the exhaust funnel, a gap is formed between the core pipe and the cylinder body of the exhaust funnel, the spiral partition plate is arranged between the cylinder body and the core pipe to form a continuous spiral channel, and the spiral channel is used for heating the dehydrated smoke and discharging the.
Description
Technical Field
The invention relates to the field of environmental protection machinery, in particular to an exhaust funnel for wet dust removal and purification.
Background
In a wet desulphurization system and other wet dedusting and purifying systems, a large amount of water is sprayed into the system for cooling and dedusting and purifying, and in the process, the flue gas often contains a large amount of water drops, so that a large amount of white smoke plume can be generated when the flue gas is discharged by an exhaust funnel, and a large amount of waste of water resources is caused. At present, along with the continuous improvement of the national environmental protection standard, the treatment of the smoke plume at the exhaust pipe gradually becomes an assessment item of the environmental protection requirement of the environmental protection department on the pollution enterprises.
At present, independent functional sections are generally arranged for dehydration, white elimination, emission and the like of wet flue gas to realize respective functions. The dehydration mode of wet flue gas containing water generally adopts a set of dehydration device which is additionally arranged behind dust removal and purification equipment, and the common dehydration modes mainly comprise a gravity type dehydrator, a wire mesh dehydrator and a cyclone dehydrator; the whitening method for the discharged wet flue gas containing water generally comprises the steps of firstly cooling the flue gas and then heating the flue gas; the common exhaust funnel is an empty funnel, and the purified flue gas is directly discharged into the exhaust funnel to be discharged. The inventor thinks that the way of respectively setting independent functional sections according to different functional requirements often causes large investment of the whole process system at one time, large occupied area of equipment and large system resistance.
Disclosure of Invention
Aiming at the technical problems of large one-time investment, large equipment occupation area and large system resistance of the whole process system caused by the independent setting of functional sections for dehydration, white elimination and emission of wet flue gas, the invention aims to provide the exhaust funnel and the method for wet dust removal and purification, which can realize the high-efficiency removal of mechanical water carried by the wet flue gas in various wet dust removal and purification systems, reduce the moisture content in the flue gas, simultaneously heat the flue gas by a heating means, keep the flue gas away from a saturated state and realize the white elimination and emission, have small resistance and small equipment occupation area and can simultaneously realize the dehydration and white elimination and emission.
In order to realize the purpose, the invention discloses the following technical scheme:
the utility model provides an aiutage for wet process dust removal purifies, includes barrel, core pipe, spiral baffle, heating mechanism and water collection funnel, and the core pipe is installed inside the barrel, and heating mechanism is installed on the core pipe top, and heating mechanism is used for heating the flue gas after the dehydration, and the funnel that catchments is installed to aiutage barrel bottom, has the clearance between core pipe and the aiutage barrel, and spiral baffle installs between barrel and core pipe, forms continuous helical channel, and helical channel is used for the flue gas after the dehydration to heat up the back and discharge.
Further, the exhaust funnel barrel is cylindrical, and the bottom end of the spiral channel is connected with the air inlet pipe.
Furthermore, the air inlet pipe is a rectangular pipeline, is arranged at the lower part of the cylinder body and is connected from the tangent plane direction of the cylinder body.
Furthermore, the water collecting funnel is installed at the bottom of the air inlet pipe, and the bottom of the water collecting funnel is also connected with a water drainage seal.
Further, the core pipe is a tapered core pipe, the core pipe is mounted at the lower end inside the exhaust funnel cylinder body, and the core pipe and the cylinder body are arranged concentrically.
Further, the diameter of the tapered core tube is gradually reduced from the inlet direction of the exhaust funnel to the outlet direction of the exhaust funnel.
Further, the heating mechanism is a torch head, and the torch head and the barrel are concentrically arranged.
Further, the flare tip is connected with a fuel gas supply source and a combustion-supporting gas supply source through a pipeline.
Furthermore, the outer wall of the exhaust funnel barrel is provided with an access hole for maintenance.
Secondly, the invention also discloses a dehydration and whitening integrated exhaust method, wherein external gas containing mechanical water enters the spiral channel from the gas inlet pipe, the gas containing the mechanical water rotates and flows in the spiral closed channel, and the mechanical water and the gas are separated out under the action of centrifugal force and then are discharged to a water collecting funnel at the bottom of the gas inlet along the inner wall of the exhaust funnel and the spiral partition plate under the action of gravity; the dehydrated gas enters the upper part of the exhaust funnel, is heated by the torch head and then is discharged through the upper outlet of the exhaust funnel, so that dehydration and white discharge are realized.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts a spiral channel, realizes the purpose of dehydration by a dehydration mode of centrifugal dehydration and gravity dehydration, combines the spiral channel with a heating device, heats the dehydrated gas, realizes the white discharge elimination, can realize multiple functions of dehydration, white discharge elimination and the like, and reduces the occupied area of a treatment system.
(2) In the invention, the core pipe is in a tapered shape, the large opening is arranged at the lower part, and the small opening is arranged at the upper part, so that a spiral channel formed by the inner wall of the exhaust funnel cylinder body, the outer wall of the core pipe and the spiral partition plate can increase the flow area along with the reduction of the pipe diameter of the core pipe. The interface of the spiral channel is small when the flue gas flows at the lower part, the flue gas can flow at a high flow velocity, sufficient centrifugal force is provided, gas-water separation is realized, the interface of the spiral channel is increased along with the ascending flow of the flue gas and the reduction of the pipe diameter of the core pipe, the flow velocity of the flue gas is relatively reduced, the sedimentation efficiency of water drops is improved, and therefore the dehydration efficiency is improved.
(3) According to the invention, the water collecting funnel is arranged at the bottom of the air inlet, mechanical water removed from the spiral channel is discharged into the water collecting funnel and then discharged into the water discharging water seal through the pipeline, and the water discharging water seal can ensure that the whole system is not contacted with the atmosphere, so that gas in the system is prevented from leaking into the atmosphere, and a good sealing effect is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of embodiment 1,
figure 2 is a cross-sectional view taken along a-a in figure 1,
in the figure, the burner comprises a gas inlet pipe 1, a gas inlet pipe 2, a cylinder body 3, a core pipe 4, a spiral partition plate 5, a torch head 6, a water collecting funnel 7, a water drainage seal 8, an overhaul platform 9, an overhaul hole 10, a gas supply system 11, a combustion-supporting gas supply system 12 and a control system.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, the present invention aims to provide an exhaust funnel and a method for wet dust removal and purification, which can efficiently remove mechanical water carried by wet flue gas in various wet dust removal and purification systems, reduce moisture content in the flue gas, heat the flue gas by a heating means, keep the flue gas away from a saturated state, and achieve the purpose of white discharge elimination, and the exhaust funnel has small resistance and small equipment occupation, and can simultaneously achieve the discharge of dehydration and white discharge elimination, and the present invention is further described with reference to the attached drawings and specific embodiments.
Example 1
It should be noted that the embodiment depends on the gas supply system 10 and the combustion-supporting gas supply system 11 which can be independently controlled.
The embodiment discloses an aiutage for wet dedusting and purifying, including barrel 2, core pipe 3, spiral baffle 4, heating mechanism and water collection funnel 6, core pipe 3 installs inside barrel 2, heating mechanism is installed on 3 tops of core pipe, heating mechanism is used for heating the flue gas after the dehydration, water collection funnel 6 is installed to aiutage barrel bottom, the clearance has between core pipe 3 and the aiutage barrel, spiral baffle 4 installs between barrel 2 and core pipe 3, form continuous spiral passage, spiral passage is used for providing a centrifugal force passageway and realizes gas-water separation among the wet flue gas.
It will be understood that the spiral channel is a continuous and closed spiral channel, closed here meaning that the channel of the spiral channel has no other openings than the inlet and the outlet.
The exhaust funnel barrel is cylindrical, and the bottom end of the spiral channel is connected with an air inlet pipe 1.
The wet flue gas containing water firstly enters from the air inlet pipe 1, the wet flue gas containing water enters into a spiral, continuous and closed spiral channel formed by the exhaust funnel cylinder 2, the spiral partition plate 4 and the core pipe 3 after passing through the air inlet pipe 1, the wet flue gas containing water flows in the spiral channel in a high-speed rotating manner, mechanical water in the flue gas is thrown to the inner wall of the exhaust funnel cylinder 2 due to the centrifugal effect in the flowing process, then the water removed by the gravity effect flows to the spiral partition plate 4 along the inner wall of the exhaust funnel cylinder 2 and then flows to the water collecting funnel 6 at the bottom of the air inlet pipe 1, and the water is discharged to the water discharging water seal 7 through the pipeline, so that the water-gas separation is realized, and the dehydration purpose is achieved. Dehydrated gas enters the middle part of the exhaust funnel barrel body 2 from the tail end of the spiral channel, the gas supply system 10 and the combustion-supporting gas supply system 11 are controlled by the control system 12 to be ignited and combusted, and a large amount of heat is released after combustion to heat and discharge the dehydrated gas entering the middle part of the exhaust funnel barrel body 2, so that white discharge is realized.
The air inlet pipe 1 is a rectangular pipeline, and the air inlet pipe 1 is installed at the lower part of the cylinder body 2 and is connected from the tangent plane direction of the cylinder body 2.
The water collecting funnel 6 is arranged at the bottom of the air inlet pipe 1, and the bottom of the water collecting funnel 6 is also connected with a water drainage seal 7.
The bottom of air inlet sets up catchment funnel 6, with the mechanical water drainage to catchment funnel 6 under the desorption in the helical passage in, then arrange to drainage water seal 7 through the pipeline, drainage water seal 7 can guarantee that entire system does not contact with the atmosphere, has avoided the gas leakage in the system to the atmosphere, has good sealing action.
The core tube 3 is a tapered core tube 3, the core tube 3 is mounted at the lower end inside the exhaust funnel cylinder body, and the core tube 3 and the cylinder body 2 are arranged concentrically.
The diameter of the tapered core tube 3 is gradually reduced from the inlet direction of the exhaust funnel to the outlet direction of the exhaust funnel.
It can be understood that the tapered core tube 3 has a large opening at the bottom and a small opening at the top, so that the spiral channel formed by the inner wall of the exhaust funnel cylinder 2, the outer wall of the core tube 3 and the spiral partition plate 4 increases the flow area as the pipe diameter of the core tube 3 becomes smaller. When the flue gas flows at the lower part, the interface of the spiral channel is small, the flue gas can flow at a high flow rate, sufficient centrifugal force is provided, gas-water separation is realized, the interface of the spiral channel is increased along with the ascending flow of the flue gas and the reduction of the pipe diameter of the core pipe 3, the flow rate of the flue gas is relatively reduced, the settling efficiency of water drops is improved, and therefore the dehydration efficiency is improved.
The heating mechanism is a torch head 5, and the torch head 5 and the barrel body 2 are arranged concentrically.
The torch head 5 is connected with a fuel gas supply source and a combustion-supporting gas supply source through pipelines.
It is understood that the gas supply system 10 is provided outside the exhaust funnel cylinder 2, supplying gas to the gas pipe interface of the torch head 5 through a gas pipe; the combustion-supporting gas system is arranged outside the exhaust cylinder body 2 and then connected into the core pipe 3 through a pipeline, and the combustion-supporting gas is supplied into the core pipe 3. The control system 12 controls the ignition gun on the torch head 5 to ignite the fuel gas under the action of the combustion-supporting gas, and the released heat heats the dehydrated gas at the upper part of the exhaust funnel barrel 2.
And the outer wall of the exhaust funnel barrel is provided with an access hole 9 for overhauling.
Example 2
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an aiutage for wet dedusting and purifying, which is characterized in that, including barrel, core pipe, spiral baffle, heating mechanism and water collection funnel, the core pipe is installed inside the barrel, heating mechanism is installed on the core pipe top, heating mechanism is used for heating the flue gas after the dehydration, water collection funnel is installed to aiutage barrel bottom, the clearance has between core pipe and the aiutage barrel, spiral baffle installs between barrel and core pipe, form continuous helical channel, helical channel is used for providing a centrifugal force passageway and realizes gas-water separation among the wet flue gas.
2. The exhaust funnel for wet dedusting and cleaning as recited in claim 1, wherein the exhaust funnel body is cylindrical, and the bottom end of the spiral channel is connected with an air inlet pipe.
3. The exhaust funnel for wet dedusting and cleaning as recited in claim 2, wherein the inlet pipe is a rectangular pipe, and the inlet pipe is installed at the lower part of the cylinder body and is connected from the tangential direction of the cylinder body.
4. The exhaust funnel for wet dedusting and purification as recited in claim 2, wherein the water collecting funnel is installed at the bottom of the air inlet pipe, and the bottom of the water collecting funnel is further connected with a water drain seal.
5. The exhaust funnel for wet dedusting and cleaning according to claim 1, wherein the core tube is a tapered core tube, the core tube is mounted at the lower end of the interior of the cylindrical body of the exhaust funnel, and the core tube is arranged concentrically with the cylindrical body.
6. The stack for wet scrubbing purification of claim 5, wherein said tapered core tube decreases in diameter from the direction of the inlet of said stack to the direction of the outlet of said stack.
7. The exhaust stack for wet scrubbing purification of claim 1, wherein said heating mechanism is a torch head, said torch head being concentrically disposed with said cartridge body.
8. The exhaust stack for wet scrubbing purification of claim 7, wherein said flare tip is connected to a fuel gas supply and a combustion gas supply by piping.
9. The exhaust funnel for wet dedusting and cleaning as recited in claim 1, wherein an access hole is opened on the outer wall of the exhaust funnel for access.
10. The exhaust method for wet dedusting and purification as recited in any one of claims 1 to 9, wherein external gas containing mechanical water enters the spiral channel from the gas inlet pipe, the gas containing mechanical water rotationally flows in the spiral closed channel, and the mechanical water is discharged to the water collecting funnel at the bottom of the gas inlet along the inner wall of the exhaust funnel and the spiral partition plate under the action of gravity after being separated from the gas under the action of centrifugal force; the dehydrated gas enters the upper part of the exhaust funnel, is heated by the heating mechanism and then is discharged through the upper outlet of the exhaust funnel, so that dehydration and white discharge are realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924639.1A CN110639284B (en) | 2019-09-27 | 2019-09-27 | Exhaust funnel and method for wet dust removal and purification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910924639.1A CN110639284B (en) | 2019-09-27 | 2019-09-27 | Exhaust funnel and method for wet dust removal and purification |
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| CN110639284A true CN110639284A (en) | 2020-01-03 |
| CN110639284B CN110639284B (en) | 2021-11-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111265939A (en) * | 2020-01-21 | 2020-06-12 | 张洋洋 | High-efficient vapour and liquid separator of desulfurization system |
| CN112090210A (en) * | 2020-08-24 | 2020-12-18 | 苏州恒境环保科技有限公司 | Self-cleaning rotational flow electromagnetic purification cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112090210A (en) * | 2020-08-24 | 2020-12-18 | 苏州恒境环保科技有限公司 | Self-cleaning rotational flow electromagnetic purification cylinder |
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