阅读说明：本技术 一种用于湿法除尘净化的排气筒和方法 (Exhaust funnel and method for wet dust removal and purification ) 是由 郑运兴 吕炎 姜洋 王志远 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种用于湿法除尘净化的排气筒及方法,包括筒体、芯管、螺旋隔板、加热机构和集水漏斗,芯管安装于筒体内部,芯管顶端安装加热机构,加热机构用于加热脱水后的烟气,排气筒筒体底部安装集水漏斗,芯管和排气筒筒体之间具有间隙,螺旋隔板安装于筒体和芯管之间,形成连续的螺旋通道,螺旋通道用于脱水后的烟气加热升温后排放。(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.)

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.

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.