CN113828139A - Flue gas desulfurization dust removal complete sets - Google Patents
Flue gas desulfurization dust removal complete sets Download PDFInfo
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- CN113828139A CN113828139A CN202111311331.3A CN202111311331A CN113828139A CN 113828139 A CN113828139 A CN 113828139A CN 202111311331 A CN202111311331 A CN 202111311331A CN 113828139 A CN113828139 A CN 113828139A
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- tower
- desulfurization
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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- 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
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a complete set of equipment for flue gas desulfurization and dust removal, which relates to the technical field of desulfurization and comprises a desulfurization tower arranged at the tail end of a flue, a clear water circulating system and a lime water circulating system, wherein the clear water circulating system and the lime water circulating system are arranged outside the desulfurization tower, the tail end of the flue is communicated with an air inlet of a flue gas fan, an air outlet of the flue gas fan is communicated with the side surface of the lower part of the desulfurization tower, and the top of the desulfurization tower is provided with a chimney. The desulfurization tower is divided into an upper part and a lower part for layered desulfurization and dust removal, the lower part is used as a core desulfurization layer, gas exchange neutralization reaction is carried out on the desulfurization water and the flue gas of the lower layer, the upper layer of the tower is used as a core dust removal layer, gas and liquid delivery is carried out by filtering clean water through the upper layer, and the escaping particles in the lower layer thick slurry desulfurization are washed, filtered and dedusted again.
Description
Technical Field
The invention relates to the technical field of desulfurization, in particular to complete equipment for flue gas desulfurization and dust removal.
Background
The kiln desulfurizing tower adopts a lime/gypsum method in a wet method: the wet desulphurization efficiency is highest and can reach 98 percent at most. The wet flue gas desulfurization technology is characterized in that the whole desulfurization system is positioned at the tail end of a flue, the desulfurization process is carried out in solution, a desulfurizing agent and a desulfurization product are both in a wet state, the reaction of the desulfurization process is a chemical reaction, the more sufficient the gas-liquid contact is, the higher the utilization rate of the desulfurizing agent is, and the higher the desulfurization efficiency is.
Lime/gypsum desulfurization is one of the most commonly used wet desulfurization methods, and has the main advantages that: the applicable coal range is wide, the desulfurization efficiency is high (when some devices Ca/S are equal to 1, the desulfurization efficiency is more than 90%), the utilization rate of the absorbent is high (can be more than 90%), the operation rate of equipment is high (can reach more than 90%), the working reliability is high (the most mature flue gas desulfurization process at present), and the desulfurizer is rich in limestone source and is cheap.
Desulfurizing tower among the prior art adopts integration sweetener, only can play desulfurated effect, can't detach the dust particle that contains in the flue gas at the desulfurization in-process, leads to still to carry out subsequent processing after the flue gas is discharged, and simultaneously, current desulfurizing tower adopts the mode of direct moisturizing to add water, and the water waste is serious, has increased the desulfurization cost.
Disclosure of Invention
The invention aims to provide a complete set of equipment for flue gas desulfurization and dust removal, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a complete set of equipment for desulfurization and dust removal of flue gas comprises a desulfurization tower arranged at the tail end of a flue, a clear water circulating system and a lime water circulating system, wherein the clear water circulating system and the lime water circulating system are arranged outside the desulfurization tower;
the desulfurizing tower is divided into an upper part and a lower part and comprises an upper tower and a lower tower which are integrally formed and are communicated with each other; multiple air distribution water-gas reactors are distributed and installed in the lower-layer tower; a multi-surface ball high-efficiency water-gas reactor and a double dehydrator are arranged in the upper tower;
the lime water circulating system comprises a lime water circulating pool, a lower-layer tower spray water pump and a gypsum concentrated slurry discharge pump, wherein the water inlet end of the lower-layer tower spray water pump is communicated with the inside of the lime water circulating pool, and the water discharge end of the lower-layer tower spray water pump is communicated with the multiple air distribution water-gas reactor;
the clean water circulating system comprises a clean water circulating pool, a filter and an upper tower filtering and spraying water pump, wherein the liquid inlet end of the upper tower filtering and spraying water pump is communicated with the clean water circulating pool, the liquid discharge end of the upper tower filtering and spraying water pump is communicated with the filter, and the liquid discharge end of the filter is communicated with the multi-surface ball high-efficiency water-gas reactor; the bottom of the upper tower is communicated with the interior of the clear water circulating pool through a pipeline.
As a further scheme of the invention: the clear water circulating system also comprises a dosing tank which is communicated with the clear water circulating pool, and alkaline solution is stored in the dosing tank.
As a still further scheme of the invention: the liquid inlet end of the gypsum thick slurry discharge pump is communicated with the inside of the lime water circulation tank, the liquid discharge end of the gypsum thick slurry discharge pump is communicated with a concentration tank, a pumping-out pump is arranged outside the concentration tank, the liquid inlet end of the pumping-out pump is communicated with the inside of the concentration tank, and the liquid discharge end of the pumping-out pump is communicated with a filter press.
As a still further scheme of the invention: the lime water circulation tank also comprises a lime bin for providing lime and a lime milk adding tank for adding lime milk into the lime water circulation tank.
As a still further scheme of the invention: the desulfurizing tower is made of glass fiber reinforced plastic materials.
As a still further scheme of the invention: the tower is characterized by further comprising a bag-type dust remover, wherein an air inlet end of the bag-type dust remover is communicated with an air exhaust end of the flue gas fan, and an air exhaust end of the bag-type dust remover is communicated with the side face of the lower part of the lower-layer tower.
Compared with the prior art, the invention has the beneficial effects that:
1. the desulfurization tower is made of glass fiber reinforced plastic materials, has corrosion resistance, wear resistance and temperature resistance, and greatly prolongs the service life of equipment;
2. the desulfurization tower is divided into an upper part and a lower part for layered desulfurization and dust removal, the lower layer is used as a core desulfurization layer, gas exchange neutralization reaction is carried out on the desulfurization water and the flue gas of the lower layer, the upper layer of the tower is used as a core dust removal layer, gas-liquid delivery is carried out by filtering clean water through the upper layer, and the escaping particles in the lower layer thick slurry desulfurization are washed, filtered and dedusted again;
3. the filter is added in the clear water circulating system, so that the upper water can be recycled, water resources are saved, and the energy consumption of the desulfurizing tower is reduced.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 in a flue gas desulfurization and dust removal plant.
FIG. 2 is a schematic structural diagram of embodiment 2 in a flue gas desulfurization and dust removal plant.
In the figure: 1-a desulfurizing tower, 101-an upper tower, 102-a lower tower, 103-a chimney, 2-a clear water circulating tank, 201-a filter, 202-a dosing tank, 203-an upper tower filtering spray water pump, 3-a lime water circulating tank, 301-a lower tower spraying water pump, 302-a gypsum concentrated slurry discharging pump, 4-a concentrating tank, 401-a pumping-out pump, 402-a filter press, 5-a lime bin, 501-a lime milk adding tank, a 6-a flue gas fan and a 7-a bag dust collector.
Detailed Description
The technical solutions in 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 obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, in the embodiment of the present invention, a flue gas desulfurization and dust removal complete equipment includes a desulfurization tower 1 disposed at a tail end of a flue, and a clear water circulation system and a lime water circulation system disposed outside the desulfurization tower 1, where the tail end of the flue is communicated with an air inlet of a flue gas blower 6, an air outlet of the flue gas blower 6 is communicated with a side surface of a lower portion of the desulfurization tower 1, the flue gas blower 6 pumps kiln interior gas to be desulfurized in the flue into the desulfurization tower 1, the kiln interior gas moves from bottom to top inside the desulfurization tower 1, and a chimney 103 is disposed at a top of the desulfurization tower 1 and is used for discharging desulfurized flue gas;
the desulfurization tower 1 is divided into an upper part and a lower part, and comprises an upper tower 101 and a lower tower 102, wherein the upper tower 101 and the lower tower 102 are integrally formed and are communicated with each other; the multiple air distribution water-gas reactors are arranged in the lower tower 102, and it can be understood that the multiple air distribution water-gas reactors are uniformly arranged in the lower tower 102 from top to bottom, lime water is pumped into the lower tower 102 and then sprayed from top to bottom by the multiple air distribution water-gas reactors, flue gas entering the desulfurizing tower 1 from the side surface is formed by spraying in the upward flowing process, and is in countercurrent contact with atomized liquid in the rising process to generate absorption reaction, and the absorption liquid is Ca (OH)2To remove SO from gas2Adsorbing acidic substances into the liquid; a multi-surface ball efficient water-gas reactor and a double dehydrator are arranged in the upper tower 101, clean water is pumped into the upper tower 101 and sprayed from top to bottom by the multi-surface ball efficient water-gas reactor to absorb residual dust particles in flue gas and the lower tower 102 treats the rest small part of SO2And the like, and simultaneously, the double dehydrator removes the water mist in the flue gas into the tower, so that the moisture content in the flue gas is the lowest;
the lime water circulating system comprises a lime water circulating pool 3, a lower-layer tower spray water pump 301 and a gypsum concentrated slurry discharge pump 302, wherein the water inlet end of the lower-layer tower spray water pump 301 is communicated with the inside of the lime water circulating pool 3, the water discharge end of the lower-layer tower spray water pump 301 is communicated with the multiple air distribution water-gas reactor, when the lower-layer tower spray water pump 301 works, lime water in the lime water circulating pool 3 is pumped into the multiple air distribution water-gas reactor, and the multiple air distribution water-gas reactor sprays the lime water from top to bottom in the lower-layer tower 102; the bottom of the lower layer tower 102 is communicated with the lime water circulating pool 3 through a pipeline, liquid flows into the lime water circulating pool 3 after absorption reaction in the lower layer tower 102, and the liquid is rich in SO2When the pH value of the acidic substance in the lime water circulating pool 3 is lowered, Ca (OH) is continuously added into the lime water circulating pool 32Neutralizing and maintaining lime water circulating pool3, pumping the liquid after the neutralization reaction into the lower-layer tower 102 by a lower-layer tower spray water pump 301 again for spraying;
the clear water circulating system comprises a clear water circulating pool 2, a filter 201 and an upper-layer tower filtering and spraying water pump 203, wherein the liquid inlet end of the upper-layer tower filtering and spraying water pump 203 is communicated with the clear water circulating pool 2, the liquid discharge end of the upper-layer tower filtering and spraying water pump 203 is communicated with the filter 201, the liquid discharge end of the filter 201 is communicated with the multi-surface ball high-efficiency water-gas reactor, the upper-layer tower filtering and spraying water pump 203 pumps out clear water in the clear water circulating pool 2, the clear water is filtered by the filter 201 and then is introduced into the upper-layer tower 101, so that the spray water in the upper-layer tower 101 is clean clear water filtered by a precision filter, and the clean clear water has a better dust particle adsorption effect on smoke; the bottom of the upper tower 101 is communicated with the interior of the clean water circulating pool 2 through a pipeline, dust particles in the flue gas are adsorbed by clean water and then flow into the clean water circulating pool 2, and water in the clean water circulating pool 2 is continuously filtered by the filter 201 and then is sprayed for use, so that the purpose of water circulation is achieved;
in the embodiment of the present invention, it should be noted that the clean water circulating system further includes a chemical feeding tank 202, the chemical feeding tank 202 is communicated with the clean water circulating pool 2, an alkaline solution is stored in the chemical feeding tank 202, and the clean water in the upper tower 101 also absorbs the residual SO when the clean water absorbs the flue gas2When acidic substances are used, clean water is introduced into the clean water circulating pool 2 to reduce the pH value of the solution in the clean water circulating pool 2, and an alkaline solution is added into the clean water circulating pool 2 through the chemical adding tank 202 to adjust the pH value of the clean water circulating pool 2.
In the embodiment of the present invention, it should be noted that a liquid inlet end of the gypsum concentrated slurry discharge pump 302 is communicated with the inside of the lime water circulation tank 3, a liquid discharge end of the gypsum concentrated slurry discharge pump 302 is communicated with the concentration tank 4, a pump 401 is disposed outside the concentration tank 4, a liquid inlet end of the pump 401 is communicated with the inside of the concentration tank 4, a liquid discharge end of the pump 401 is communicated with the filter press 402, and when the slurry concentration inside the lime water circulation tank 3 reaches a certain concentration, the gypsum concentrated slurry discharge pump 302 periodically pumps a part of the concentrated slurry to the concentration tank 4 for precipitation, and pumps the concentrated slurry to the filter press 402 for recycling through the pump 401.
In another embodiment of the present invention, it should be noted that the lime slurry storage bin 5 for providing lime and the lime slurry adding tank 501 for adding lime slurry into the lime water circulation tank 3 are further included.
In the embodiment of the invention, it is noted that the desulfurization tower 1 is made of glass fiber reinforced plastic material, has corrosion resistance, wear resistance and temperature resistance, and greatly prolongs the service life of equipment; the spraying system, namely, the multiple air distribution water-gas reactor, the multi-surface ball high-efficiency water-gas reactor and the double dehydrator are detachably manufactured, and spray guns or nozzles can be replaced and cleaned under the conditions of no influence on production and no shutdown, so that the operation effect is ensured; the circulating water adopts glass fiber reinforced plastic filtering equipment (a filter 201), so that the water quality is ensured to be recycled, the water supplementing quantity of the water is reduced, and the operating cost is reduced.
Example 2
Referring to fig. 2, the difference between the present embodiment and embodiment 1 is:
still including sack cleaner 7, the air inlet end of sack cleaner 7 and flue gas fan 6 exhaust the end intercommunication, and the end of airing exhaust of sack cleaner 7 and the side intercommunication of lower floor's tower 102 lower part through set up sack cleaner 7 between lower floor's tower 102 and flue gas fan 6, carry out the preliminary treatment that removes dust to the inside flue gas that lets in desulfurizing tower 1, effectively reduce the dust particle in the flue gas to reduce desulfurizing pressure of desulfurizing tower 1, improve desulfurizing efficiency of desulfurizing tower 1.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A flue gas desulfurization and dust removal complete equipment comprises a desulfurization tower (1) arranged at the tail end of a flue, and a clear water circulating system and a lime water circulating system which are arranged outside the desulfurization tower (1), wherein the tail end of the flue is communicated with an air inlet of a flue gas fan (6), an air outlet of the flue gas fan (6) is communicated with the side surface of the lower part of the desulfurization tower (1), the top of the desulfurization tower (1) is provided with a chimney (103), and the flue gas desulfurization and dust removal complete equipment is characterized in that,
the desulfurization tower (1) is divided into an upper part and a lower part and comprises an upper tower (101) and a lower tower (102), wherein a multiple air and water-gas distribution reactor is arranged in the lower tower (102); a multi-surface ball high-efficiency water-gas reactor and a double dehydrator are arranged in the upper tower (101);
the lime water circulating system comprises a lime water circulating pool (3), a lower-layer tower spray water pump (301) and a gypsum concentrated slurry discharging pump (302), wherein the water inlet end of the lower-layer tower spray water pump (301) is communicated with the inside of the lime water circulating pool (3), and the water discharging end of the lower-layer tower spray water pump (301) is communicated with the multiple air distribution water-gas reactor;
the clean water circulating system comprises a clean water circulating pool (2), a filter (201) and an upper tower filtering spray water pump (203), wherein the liquid inlet end of the upper tower filtering spray water pump (203) is communicated with the clean water circulating pool (2), the liquid discharge end of the upper tower filtering spray water pump (203) is communicated with the filter (201), and the liquid discharge end of the filter (201) is communicated with the multi-surface ball high-efficiency water-gas reactor; the bottom of the upper tower (101) is communicated with the interior of the clear water circulating pool (2) through a pipeline.
2. The complete set of equipment for flue gas desulfurization and dust removal according to claim 1, wherein the clean water circulating system further comprises a dosing tank (202), the dosing tank (202) is communicated with the clean water circulating pool (2), and an alkaline solution is stored in the dosing tank (202).
3. The flue gas desulfurization and dust removal complete equipment according to claim 1, wherein the liquid inlet end of the gypsum concentrated slurry discharge pump (302) is communicated with the interior of the lime water circulation tank (3), the liquid discharge end of the gypsum concentrated slurry discharge pump (302) is communicated with the concentration tank (4), a pumping-out pump (401) is arranged outside the concentration tank (4), the liquid inlet end of the pumping-out pump (401) is communicated with the interior of the concentration tank (4), and the liquid discharge end of the pumping-out pump (401) is communicated with the pressure filter (402).
4. The complete set of equipment for flue gas desulfurization and dust removal according to claim 1, further comprising a lime bin (5) for supplying lime and a lime milk adding tank (501) for adding lime milk into the lime water circulation tank (3).
5. The flue gas desulfurization dust removal kit of claim 1, wherein the desulfurization tower (1) is made of fiberglass reinforced plastic material.
6. The flue gas desulfurization dust removal complete equipment according to claim 1, characterized by further comprising a bag-type dust remover (7), wherein an air inlet end of the bag-type dust remover (7) is communicated with an air exhaust end of the flue gas fan (6), and an air exhaust end of the bag-type dust remover (7) is communicated with the side surface of the lower part of the lower tower (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311331.3A CN113828139A (en) | 2021-11-08 | 2021-11-08 | Flue gas desulfurization dust removal complete sets |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311331.3A CN113828139A (en) | 2021-11-08 | 2021-11-08 | Flue gas desulfurization dust removal complete sets |
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| Publication Number | Publication Date |
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| CN113828139A true CN113828139A (en) | 2021-12-24 |
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| CN202111311331.3A Pending CN113828139A (en) | 2021-11-08 | 2021-11-08 | Flue gas desulfurization dust removal complete sets |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138038A (en) * | 2017-07-11 | 2017-09-08 | 毕伟新 | A kind of wet desulphurization denitration dust collecting integrated technique and device |
| CN207856557U (en) * | 2017-11-30 | 2018-09-14 | 湖北加德科技股份有限公司 | Efficient desulfurizing and dust collecting integrated complex absorption tower |
| CN211216155U (en) * | 2019-10-31 | 2020-08-11 | 山东国舜建设集团有限公司 | Lime wet flue gas desulfurization tower |
-
2021
- 2021-11-08 CN CN202111311331.3A patent/CN113828139A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138038A (en) * | 2017-07-11 | 2017-09-08 | 毕伟新 | A kind of wet desulphurization denitration dust collecting integrated technique and device |
| CN207856557U (en) * | 2017-11-30 | 2018-09-14 | 湖北加德科技股份有限公司 | Efficient desulfurizing and dust collecting integrated complex absorption tower |
| CN211216155U (en) * | 2019-10-31 | 2020-08-11 | 山东国舜建设集团有限公司 | Lime wet flue gas desulfurization tower |
Non-Patent Citations (2)
| Title |
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| 于培霞等: "《大型浮法玻璃生产装置及其施工》", 31 May 2010, 中国轻工业出版社 * |
| 牛春良: "《工业烟囱设计手册》", 31 July 2017, 冶金工业出版社 * |
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Address after: 528000 7 of workshop (F1) of Jinheng metal products Co., Ltd., Longzhou village, southwest Street, Sanshui District, Foshan City, Guangdong Province (residence declaration) Applicant after: Guangdong yuechen Xintai Intelligent Manufacturing Co.,Ltd. Address before: 528000 7 of workshop (F1) of Jinheng metal products Co., Ltd., Longzhou village, southwest Street, Sanshui District, Foshan City, Guangdong Province (residence declaration) Applicant before: Foshan yuechen Xintai mechanical equipment Co.,Ltd. |
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Application publication date: 20211224 |