CN210186812U - Flue gas reaction tower - Google Patents
Flue gas reaction tower Download PDFInfo
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- CN210186812U CN210186812U CN201920534559.0U CN201920534559U CN210186812U CN 210186812 U CN210186812 U CN 210186812U CN 201920534559 U CN201920534559 U CN 201920534559U CN 210186812 U CN210186812 U CN 210186812U
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Abstract
The utility model discloses a flue gas reaction tower, which comprises a flue gas inlet and a flue gas outlet which are arranged at the top of the flue gas reaction tower, a rotary atomizer which is arranged at the center of the top of the flue gas reaction tower, and a discharge hole which is arranged at the bottom of the flue gas reaction tower; the inner side wall of the flue gas reaction tower is provided with at least one inflatable flat plate, and the flue gas reaction tower also comprises an inflation and deflation device which is arranged on the outer wall and communicated with the inflatable flat plate; the surface of the inflatable flat plate exposed to the smoke reaction space is made of high-temperature-resistant and elastic rubber materials; the inflation and deflation device inflates and deflates the inflatable flat plate through a communicated pipeline. Through the utility model discloses, solve the reaction tower that can't in time clear up the flue gas reaction and cause among the prior art in the reaction tower and tie up the condition of wall to reduce hardening in the reaction tower and hang grey phenomenon, guarantee the continuous and stable work of msw incineration power plant.
Description
Technical Field
The utility model relates to a msw incineration technical field especially relates to a flue gas reaction tower.
Background
With the development of economy, the increasing population and the increasing living standard of people, the generation amount of municipal waste is increased. The pollution of the garbage to the environment becomes an increasingly serious problem, and how to economically and effectively treat the garbage is one of the effective ways for treating the solid waste at present by garbage incineration.
The acid gas generated by the incineration of garbage has three common treatment methods, namely a dry method, a wet method and a semi-dry method. The dry method has simple process, less investment and low operation cost, but the pollutant removal rate is relatively low; the wet process is complex, the investment is high, the operation cost is high, the pollutant removal rate is high, but waste water needs to be treated; the semi-dry method is between the dry method and the wet method, the process treatment effect is better than that of the dry method, and the investment is lower than that of the wet method. Therefore, the technical policy of municipal solid waste treatment and pollution control released in 2000 clearly indicates that: the flue gas treatment is preferably carried out by adopting a semidry method and cloth bag dust removal process.
Referring to fig. 1, a prior art flue gas cleaning system is shown. Each flue gas purification system is provided with a semi-dry reaction tower, and lime slurry or sodium hydroxide is sprayed into flue gas by using a rotary sprayer. The water in the lime slurry is evaporated to lower the temperature of the flue gas, while the slaked lime in the later stage reduces the acid gas content. After the reaction tower, powdered activated carbon is sprayed into the flue gas as an adsorbent to adsorb mercury and dioxin/furan, etc. therein. And then the clean gas filtered by the dust remover is discharged from a chimney through a draught fan. A semi-dry reaction tower (hereinafter referred to as a reaction tower) in flue gas treatment equipment is core equipment of a semi-dry flue gas purification process, and comprises a flue gas inlet flue, a rotary sprayer (spray gun), a cylinder, a flue gas outlet flue with an activated carbon nozzle and a bottom cone hopper with a crusher and a rotary valve. The function of the reaction tower is to perform a first step of purification after the flue gas leaves the boiler. In the reaction tower, heavy metal and harmful gas components (HCl, SOx) in the flue gas are subjected to neutralization reaction at a proper temperature by contacting with sprayed lime slurry or sodium hydroxide solution to reduce the content. The atomized lime slurry is mixed with hot flue gas in a rotary spray drying deacidification reaction tower to carry out heat and mass transfer exchange and carry out the following chemical reactions:
Ca(OH)2+2HCl＝CaCl2+2H2O
Ca(OH)2+SO2＝CaSO3+H2O
Ca(OH)2+SO3+＝CaSO4+H2O
thereby effectively removing harmful HCl, SO2 and SO3 in the flue gas.
In the reaction tower in the prior art, flue gas with the temperature of about 220 ℃ coming out of a waste heat boiler firstly enters from the top of the reaction tower and moves downwards, and is discharged from the bottom after reacting with lime slurry or sodium hydroxide solution in the reaction tower. In this process the lime slurry is in direct contact with the flue gas and the height of the reaction tower needs to be set high enough to ensure that the sprayed atomized water can be completely evaporated. After the temperature of the reaction tower is reduced to about 170 ℃, the flue gas leaves from the bottom of the tower and enters a bag-type dust collector. However, lime slurry in the reaction tower is atomized and then reacts with flue gas in a contact manner, so that the reaction tower is easy to form a wall, if the lime slurry is not removed in time, the production of a desulfurization system is easily affected, the frequency opening of an induced draft fan is increased continuously, the negative pressure of two measuring points at the inlet and the outlet of the reaction tower is reduced continuously, the negative pressure in front of the induced draft fan is increased continuously until an alarm is given, if the negative pressure is increased continuously, the barrel of the reaction tower is blocked, and if the negative pressure is increased continuously, the reaction tower is.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flue gas reaction tower to can't in time clear up the flue gas reaction and the reaction tower that causes in solving prior art in the reaction tower knot wall's the condition, with reduce hardening in the reaction tower and hang grey phenomenon, guarantee the continuous and stable work of msw incineration power plant.
In order to solve the technical problem, the utility model discloses a technical scheme be: providing a flue gas reaction tower, which comprises a flue gas inlet and a flue gas outlet arranged at the top of the flue gas reaction tower, a rotary atomizer arranged at the center of the top of the flue gas reaction tower, and a discharge hole arranged at the bottom of the flue gas reaction tower; the inner side wall of the flue gas reaction tower is provided with at least one inflatable flat plate, and the flue gas reaction tower also comprises an inflation and deflation device which is arranged on the outer wall and communicated with the inflatable flat plate; the surface of the inflatable flat plate exposed to the smoke reaction space is made of high-temperature-resistant and elastic rubber materials; the inflation and deflation device inflates and deflates the inflatable flat plate through a communicated pipeline.
The middle part of the flue gas reaction tower is of a cylindrical tower body structure and comprises an outer layer cylinder body and an inner layer cylinder body; the inflatable flat plate is arranged on the inner-layer cylinder body.
Wherein, the flat plates are arranged one per square meter and fixed on the inner-layer cylinder body through welding or bolts.
The outer-layer cylinder body is made of carbon steel materials, and the inner-layer cylinder body is made of wear-resistant and corrosion-resistant stainless steel materials.
The lower part of the flue gas reaction tower is a conical structure which is narrowed from top to bottom, the upper part of the conical structure is connected with the lower part of the cylindrical tower body structure, and the conical structure comprises an outer cone and an inner cone; at least one inflatable flat plate is also arranged on the inner vertebral body.
Wherein, the inflatable flat plates are arranged one per square meter and are fixed on the inner vertebral body through welding or bolts.
The outer cone is made of carbon steel material, and the inner cone is made of wear-resistant and corrosion-resistant stainless steel material.
The conical structure and the connection part of the cylindrical tower body structure are further provided with a support, and the support extends downwards along the cylindrical tower body structure.
Wherein, the surface of the aeration flat plate exposed in the smoke reaction space is made of high molecular polymer material which can resist the high temperature of 300 ℃.
The utility model has the advantages that: different from the prior art, the utility model provides a flue gas reaction tower, the inner wall of the flue gas reaction tower is provided with at least one aeration flat plate, and is communicated with an aeration control device through a pipeline; the air charging and discharging control device can charge air to the air charging flat plate according to the ash deposition condition of the reaction tower, and utilizes the principle that the expansion deformation of an object leads lime or fly ash deposited on the wall to peel off, when the air charging flat plate is charged with air, the high-temperature rubber on the surface expands to push away and peel off lime or fly ash hardened objects which are just generated on the barrel wall, and then the lime or fly ash hardened objects are conveyed to the ash bin by integrating the scraper so as to solve the problem that the reaction tower is deposited on the wall due to the fact that flue gas reaction cannot be cleaned in time in the reaction tower, and reduce the phenomena of hardening and; furthermore, the air charging and discharging period of the air charging and discharging control device is set, the air charging and discharging flat plate is periodically and repeatedly operated to regularly control the air charging and discharging of the air charging flat plate to clean the plate knots, the automatic online ash removal effect is achieved, and better conditions are created for continuous and stable production of the existing waste incineration power plant.
Drawings
FIG. 1 is a schematic diagram of a prior art flue gas cleaning system;
fig. 2 is a schematic structural diagram of a flue gas reaction tower in an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and embodiments.
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. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 2 is a schematic structural diagram of a flue gas reaction tower according to an embodiment of the present invention. The utility model discloses flue gas reaction tower among the embodiment is used for waste incineration's gas cleaning system, is half dry reaction tower.
The flue gas reaction tower 10 comprises a flue gas inlet 11 arranged at the top, a rotary atomizer 12 arranged at the center of the top, a discharge hole 13 arranged at the bottom and a gas outlet 14 arranged at the top.
Further, the middle part of the flue gas reaction tower 10 is a cylindrical tower body structure 20, which comprises an outer layer cylinder 21 and an inner layer cylinder 22; the interior of the inner cylinder 22 forms a space for the flue gas reaction. The rotary atomizer 12 sprays the lime slurry into the inside of the semi-dry reaction tower 10 together with the acid gas (So) in the flue gasxHCl, etc.) to achieve the purpose of deacidification.
Further, the lower part of the flue gas reaction tower 10 is a conical structure 30 which narrows from top to bottom, the upper part of the conical structure 30 is connected with the lower part of the cylindrical tower body structure 20, and the conical structure 30 comprises an outer cone 31 and an inner cone 32.
In this embodiment, the outer cylinder 21 and the outer cone 31 are made of carbon steel to bear the weight load of the relevant equipment at the top of the reaction tower.
Further, the junction of the conical structure 30 and the cylindrical tower structure 20 is provided with a support 15, and the support 15 extends downwards along the cylindrical tower structure 20 to bear the weight load of the equipment associated with the top of the reaction tower.
The larger particle fly ash after deacidification reaction is settled to the bottom of the conical structure 30 and discharged through the discharge hole 13, and the flue gas after reaction is discharged through the gas outlet 14 for subsequent purification treatment.
In the embodiment, the inner cylinder 22 and the inner cone 32 are made of wear-resistant and corrosion-resistant stainless steel, so that the problem of corrosion of the inner wall of the reaction tower is solved, and the service life and the in-service safety of the equipment are greatly improved.
Further, at least one aeration flat plate 16 is arranged on the inner-layer cylinder 22 of the cylindrical tower body structure 20, and the flue gas reaction tower 10 further comprises an aeration device 17 which is arranged on the outer wall and communicated with the aeration flat plate 16. Specifically, the surface of the inflatable flat plate 16 exposed to the flue gas reaction space is made of a high-temperature resistant and elastic rubber material; the inflation/deflation device 17 is connected to the inflatable flat plate 16 through a connecting pipe, and can inflate the inflatable flat plate 16 to expand the surface thereof, or suck air from the inflatable flat plate 16 to restore the surface thereof to be flat or to be concave to some extent.
In the present embodiment, a plurality of inflatable flat plates 16 are disposed on the inner-layer cylinder 22 of the cylindrical tower structure 20, and specifically, the inflatable flat plates 16 are disposed one per square meter, either continuously or distributively, and are mounted on the inner-layer cylinder 22 of the cylindrical tower structure 20 by welding or bolting.
In this embodiment, the surface of the gas-filled flat plate 16 exposed to the flue gas reaction space is made of a high molecular polymer material resistant to high temperature of 300 ℃, which can satisfy the requirements of high temperature in the reaction tower and the scouring of corrosive flue gas.
Further, at least one inflatable plate 16 is disposed on the inner vertebral body 32 of the conical structure 30. Specifically, the distribution and installation of the inflatable flat plates 16 are the same as those of the inner-layer cylinders 22 of the cylindrical tower structure 20, and are not described herein again.
The ash removal working principle of the flue gas reaction tower is as follows: when the air charging and discharging device 17 charges air to the air charging flat plate 16, the high-temperature rubber on the surface expands to push away lime or fly ash plate which is just generated on the barrel wall to peel off. The falling hardened objects are discharged through a discharge hole 13 at the bottom end and conveyed to an ash bin.
Further, the aeration and deflation device 17 controls the aeration and deflation period of each aeration plate 16 at regular time, the control period can be determined according to the ash deposition thickness speed of the barrel wall of the reaction tower, for example, the aeration and deflation device 17 is preset to control the aeration of the aeration plates 16 once per week.
Specifically, the inflation time: taking an inflation pressure of 2PSI as an example, about 20 seconds are required for an inflation time per square meter of the inflatable panel, and a deflation time per square meter of the inflatable panel is 30 seconds. This operating condition is such that the central bulging height of the plate is 10 cm.
In the flue gas reaction tower provided in the embodiment of the present invention, at least one aeration flat plate is disposed on the inner wall of the flue gas reaction tower, and is communicated with the aeration control device through a pipeline; the air charging and discharging control device can charge air to the air charging flat plate according to the ash deposition condition of the reaction tower, and utilizes the principle that the expansion deformation of an object leads lime or fly ash deposited on the wall to peel off, when the air charging flat plate is charged with air, the high-temperature rubber on the surface expands to push away and peel off lime or fly ash hardened objects which are just generated on the barrel wall, and then the lime or fly ash hardened objects are conveyed to the ash bin by integrating the scraper so as to solve the problem that the reaction tower is deposited on the wall due to the fact that flue gas reaction cannot be cleaned in time in the reaction tower, and reduce the phenomena of hardening and; furthermore, the air charging and discharging period of the air charging and discharging control device is set, the air charging and discharging flat plate is periodically and repeatedly operated to regularly control the air charging and discharging of the air charging flat plate to clean the plate knots, the automatic online ash removal effect is achieved, and better conditions are created for continuous and stable production of the existing waste incineration power plant.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above features are combined with each other to form various embodiments not listed above, and all of them are considered as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A flue gas reaction tower comprises a flue gas inlet and a flue gas outlet which are arranged at the top of the flue gas reaction tower, a rotary atomizer which is arranged at the center of the top of the flue gas reaction tower, and a discharge hole which is arranged at the bottom of the flue gas reaction tower; the device is characterized in that at least one inflatable flat plate is arranged on the side wall of the inner layer of the flue gas reaction tower, and the flue gas reaction tower also comprises an inflation and deflation device which is arranged on the outer wall and communicated with the inflatable flat plate; the surface of the inflatable flat plate exposed to the smoke reaction space is made of high-temperature-resistant and elastic rubber materials; the inflation and deflation device inflates and deflates the inflatable flat plate through a communicated pipeline.
2. The flue gas reaction tower of claim 1, wherein the middle part of the flue gas reaction tower is of a cylindrical tower body structure and comprises an outer layer cylinder body and an inner layer cylinder body; the inflatable flat plate is arranged on the inner-layer cylinder body.
3. The flue gas reaction column of claim 2, wherein the gas-filled flat plates are arranged one per square meter and fixed on the inner-layer cylinder by welding or bolts.
4. The flue gas reaction tower of claim 2, wherein the outer layer cylinder is made of carbon steel material, and the inner layer cylinder is made of wear-resistant and corrosion-resistant stainless steel material.
5. The flue gas reaction tower of claim 2, wherein the lower part of the flue gas reaction tower is a conical structure which is narrowed from top to bottom, the upper part of the conical structure is connected with the lower part of the cylindrical tower body structure, and the conical structure comprises an outer cone and an inner cone; at least one inflatable flat plate is also arranged on the inner vertebral body.
6. The flue gas reaction column of claim 5, wherein the gas filled flat plates are arranged one per square meter and fixed on the inner vertebral body by welding or bolts.
7. The flue gas reaction tower of claim 5, wherein the outer cone is made of carbon steel material and the inner cone is made of wear-resistant and corrosion-resistant stainless steel material.
8. The flue gas reaction tower of claim 5, wherein a support is further disposed at a junction of the conical structure and the cylindrical tower body structure, and the support extends downward along the cylindrical tower body structure.
9. The flue gas reaction tower of claim 1, wherein the surface of the aeration flat plate exposed to the flue gas reaction space is made of a high molecular polymer material resistant to a high temperature of 300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920534559.0U CN210186812U (en) | 2019-04-19 | 2019-04-19 | Flue gas reaction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920534559.0U CN210186812U (en) | 2019-04-19 | 2019-04-19 | Flue gas reaction tower |
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| Publication Number | Publication Date |
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| CN210186812U true CN210186812U (en) | 2020-03-27 |
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| CN201920534559.0U Active CN210186812U (en) | 2019-04-19 | 2019-04-19 | Flue gas reaction tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026058A (en) * | 2019-04-19 | 2019-07-19 | 漳州环境再生能源有限公司 | A kind of smoke reaction tower |
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2019
- 2019-04-19 CN CN201920534559.0U patent/CN210186812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026058A (en) * | 2019-04-19 | 2019-07-19 | 漳州环境再生能源有限公司 | A kind of smoke reaction tower |
| CN110026058B (en) * | 2019-04-19 | 2024-09-24 | 漳州环境再生能源有限公司 | Flue gas reaction tower |
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