CN209848668U - Desulfurization absorption tower - Google Patents
Desulfurization absorption tower Download PDFInfo
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- CN209848668U CN209848668U CN201920003217.6U CN201920003217U CN209848668U CN 209848668 U CN209848668 U CN 209848668U CN 201920003217 U CN201920003217 U CN 201920003217U CN 209848668 U CN209848668 U CN 209848668U
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Abstract
The utility model discloses a desulfurization absorption tower, supply thick liquid device including absorption tower, chimney and lime stone, the absorption tower includes one-level absorption tower and second grade absorption tower, the lime stone supplies thick liquid device respectively with one-level absorption tower and second grade absorption tower intercommunication, one-level absorption tower and second grade absorption tower are through first flue gas discharge pipe and back flow intercommunication, the second grade absorption tower passes through second flue gas discharge pipe and chimney intercommunication, the one-level absorption tower includes one-level absorption tower main part and first slurry circulation system, first slurry circulation system sets up in the one-level absorption tower main part, the second grade absorption tower includes second grade absorption tower main part and second slurry circulation system, second slurry circulation system sets up in the second grade absorption tower main part. Compared with the prior art, the utility model the advantage lie in: high desulfurization efficiency, simple process flow and stable and reliable equipment operation.
Description
Technical Field
The utility model relates to a flue gas purification technical field specifically indicates a desulfurization absorption tower.
Background
With the increasing environmental protection requirement, the concentration of sulfur dioxide discharged from a boiler chimney is required to be less than 35mg/Nm3, the conventional single-tower single-circulation empty tower spraying process in the prior art is difficult to meet the requirement of high desulfurization efficiency, particularly when the coal-fired ratio is high and the concentration of sulfur dioxide discharged from boiler combustion is high, the desulfurization efficiency of a desulfurization system is required to be more than 98.5 percent, even the desulfurization efficiency is required to be more than 99 percent, so a new desulfurization technical route is required to achieve high efficiency so as to meet the new requirements of environmental protection and regulations. Solves the problems of low desulfurization efficiency, complex process flow, unstable equipment operation and the like in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the deficiency in the background art, providing a desulfurization absorption tower, it has characteristics such as desulfurization efficiency height, process flow are simple, equipment operation is reliable and stable.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a desulfurization absorption tower, supplies the thick liquid device including absorption tower, chimney and lime stone, the absorption tower includes one-level absorption tower and second grade absorption tower, the lime stone supplies the thick liquid device respectively with one-level absorption tower and second grade absorption tower intercommunication, one-level absorption tower and second grade absorption tower are through first flue gas discharge pipe and back flow intercommunication, the second grade absorption tower passes through second flue gas discharge pipe and chimney intercommunication, the one-level absorption tower includes one-level absorption tower main part and first thick liquid circulation system, first thick liquid circulation system sets up in the one-level absorption tower main part, the second grade absorption tower includes second grade absorption tower main part and second thick liquid circulation system, second thick liquid circulation system sets up in the second grade absorption tower main part.
Compared with the prior art, the utility model the advantage lie in: the utility model upgrades and expands the process route of the conventional single-tower single-circulation empty tower spraying, adopts the configuration of the two-stage absorption towers in series, and has the desulfurization efficiency of over 99 percent after the flue gas passes through the two absorption towers; each stage of absorption tower is provided with an independent slurry circulating system, an oxidizing air system and a limestone slurry supply system, so that the stable operation of the equipment is ensured without mutual influence; the circulation amount of the two-stage absorption tower, the amount of the supplied oxidizing air and the limestone slurry amount are controlled to be different, the pH values of the two-stage absorption tower are different, and the partition tower control is carried out, so that the desulfurization rate and the gypsum crystallization are improved.
As an improvement, a first-stage absorption tower inlet and a first-stage absorption tower outlet are formed in the first-stage absorption tower main body, the first-stage absorption tower inlet is formed in the middle of the first-stage absorption tower main body, a rotational flow rectification partition plate is arranged in the first-stage absorption tower main body on the upper portion of the first-stage absorption tower inlet, the first-stage absorption tower outlet is formed in the top of the first-stage absorption tower main body, and the first-stage absorption tower main body is communicated with a gypsum dehydration system.
As an improvement, a secondary absorption tower inlet and a secondary absorption tower outlet are arranged on the secondary absorption tower main body, the secondary absorption tower inlet is arranged in the middle of the secondary absorption tower main body, the secondary absorption tower outlet is arranged at the top of the secondary absorption tower main body, the secondary absorption tower inlet is communicated with the primary absorption tower outlet through a first flue gas discharge pipeline, the secondary absorption tower outlet is communicated with a chimney through a second flue gas discharge pipeline, and a demister is arranged at the upper part of a second slurry conveying pipeline in the secondary absorption tower main body.
As an improvement, the first slurry circulating system comprises a first slurry circulating pump and a first slurry conveying pipeline, the first slurry circulating pump is arranged on the first slurry conveying pipeline, one end of the first slurry conveying pipeline is connected with the tower wall of the lower half part of the main body of the first-stage absorption tower, and the other end of the first slurry conveying pipeline is arranged in the main body of the first-stage absorption tower on the upper part of the rotational flow rectification partition plate.
As an improvement, the second slurry circulating system comprises a second slurry circulating pump and a second slurry conveying pipeline, the second slurry circulating pump is arranged on the second slurry conveying pipeline, one end of the second slurry conveying pipeline is connected with the lower half tower wall of the main body of the second-stage absorption tower, and the other end of the second slurry conveying pipeline is arranged in the main body of the second-stage absorption tower at the upper end of the inlet of the second-stage absorption tower.
As an improvement, a plurality of first nozzles are arranged on the first slurry conveying pipeline, and a plurality of second nozzles are arranged on the second slurry conveying pipeline.
As an improvement, the limestone slurry supply device is communicated with the primary absorption tower main body and the secondary absorption tower main body through a third slurry conveying pipeline and a fourth slurry conveying pipeline respectively.
Drawings
Fig. 1 is a schematic structural diagram of a desulfurization absorption tower of the present invention.
Fig. 2 is the main structure schematic diagram of the primary absorption tower of the desulfurization absorption tower of the present invention.
Fig. 3 is a schematic view of the main structure of the second-stage absorption tower of the desulfurization absorption tower of the present invention.
As shown in the figure: 1. the device comprises a primary absorption tower, 2, a secondary absorption tower, 3, a chimney, 4, a first flue gas discharge pipeline, 5, a second flue gas discharge pipeline, 6, a return pipe, 7, a limestone slurry supply device, 10, a primary absorption tower body, 20, a secondary absorption tower body, 11, a first slurry circulating system, 21, a second slurry circulating system, 30, a third slurry conveying pipeline, 31, a fourth slurry conveying pipeline, 100, a primary absorption tower inlet, 101, a primary absorption tower outlet, 102, a cyclone rectifying partition plate, 103, a gypsum dewatering system, 200, a secondary absorption tower inlet, 201, a secondary absorption tower outlet, 202, a demister, 110, a first slurry circulating pump, 111, a first slurry conveying pipeline, 210, a second slurry circulating pump, 211, a second slurry conveying pipeline, a first nozzle, 2110 and a second nozzle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to the drawings, a desulfurization absorption tower comprises an absorption tower, a chimney 3 and a limestone slurry supply device 7, wherein the absorption tower comprises a first-stage absorption tower 1 and a second-stage absorption tower 2, the limestone slurry supply device 7 is respectively communicated with the first-stage absorption tower 1 and the second-stage absorption tower 2, the first-stage absorption tower 1 and the second-stage absorption tower 2 are communicated through a first flue gas discharge pipeline 4 and a return pipe 6, the second-stage absorption tower 2 is communicated with the chimney 3 through a second flue gas discharge pipeline 5, the first-stage absorption tower 1 comprises a first-stage absorption tower main body 10 and a first slurry circulation system 11, the first slurry circulation system 11 is arranged in the first-stage absorption tower main body 10, the second-stage absorption tower 2 comprises a second-stage absorption tower main body 20 and a second slurry circulation system 21, and the second slurry circulation system 21 is arranged in the second-stage absorption tower main body 20.
The gypsum dehydration tower is characterized in that a primary absorption tower inlet 100 and a primary absorption tower outlet 101 are arranged on the primary absorption tower main body 10, the primary absorption tower inlet 100 is arranged in the middle of the primary absorption tower main body 10, a cyclone rectification partition plate 102 is arranged in the primary absorption tower main body 10 on the upper portion of the primary absorption tower inlet 100, the primary absorption tower outlet 101 is arranged at the top of the primary absorption tower main body 10, and the primary absorption tower main body 10 is communicated with a gypsum dehydration system 103.
The secondary absorption tower comprises a secondary absorption tower main body 20, and is characterized in that a secondary absorption tower inlet 200 and a secondary absorption tower outlet 201 are arranged on the secondary absorption tower main body 20, the secondary absorption tower inlet 200 is arranged in the middle of the secondary absorption tower main body 20, the secondary absorption tower outlet 201 is arranged at the top of the secondary absorption tower main body 20, the secondary absorption tower inlet 200 is communicated with a primary absorption tower outlet 101 through a first flue gas discharge pipeline 4, the secondary absorption tower outlet 201 is communicated with a chimney 3 through a second flue gas discharge pipeline 5, and a demister 202 is arranged on the upper portion of a second slurry conveying pipeline 211 in the secondary absorption tower main body 20.
The first slurry circulation system 11 includes a first slurry circulation pump 110 and a first slurry delivery pipe 111, the first slurry circulation pump 110 is disposed on the first slurry delivery pipe 111, one end of the first slurry delivery pipe 111 is connected to the lower half of the first absorption tower body 10, and the other end is disposed in the first absorption tower body 10 above the cyclone rectification partition plate 102.
The second slurry circulating system 21 includes a second slurry circulating pump 210 and a second slurry conveying pipe 211, the second slurry circulating pump 210 is disposed on the second slurry conveying pipe 211, one end of the second slurry conveying pipe 211 is connected to the lower half portion of the tower wall of the second-stage absorption tower main body 20, and the other end is disposed in the second-stage absorption tower main body 20 at the upper end of the second-stage absorption tower inlet 200.
The first slurry transport pipe 111 is provided with a plurality of first nozzles 1110, and the second slurry transport pipe 211 is provided with a plurality of second nozzles 2110.
The limestone slurry supply device 7 is communicated with the primary absorption tower main body 10 and the secondary absorption tower main body 20 through a third slurry conveying pipeline 30 and a fourth slurry conveying pipeline 31 respectively.
The utility model discloses a theory of operation: the number of the slurry conveying pipelines of the desulfurization absorption tower is determined according to the processing capacity of the absorption tower, for example, a first-stage absorption tower 1 is provided with two first slurry conveying pipelines 111, a second-stage absorption tower 2 is provided with three second slurry conveying pipelines 211, the two-stage absorption tower is configured in series, the flue gas passes through the first-stage absorption tower 1 and the second-stage absorption tower 2 in sequence for desulfurization, a first slurry circulating system 11 extracts the slurry at the bottom of the first-stage absorption tower 1 through a first slurry circulating pump 110, the slurry is sprayed out from a first nozzle 1110 through the first slurry conveying pipelines 111, so that the purpose of desulfurization of the flue gas is achieved, a second slurry circulating system 21 extracts the slurry at the bottom of the second-stage absorption tower 2 through a second slurry circulating pump 210, the slurry is sprayed out from a second nozzle 2110 through the second slurry conveying pipelines 211, so that the purpose of thorough desulfurization of the flue gas is achieved, the flue gas and the circulating slurry, the efficiency reaches 70-90%, then the flue gas enters the secondary absorption tower 2, the flue gas and the circulating slurry are subjected to countercurrent circulating contact reaction to reach 70-95%, and the desulfurization efficiency reaches over 99% after passing through the two towers. Each stage of absorption tower is provided with an independent slurry circulating system, an oxidation air system and a limestone slurry supply system, and the circulating amount, the amount of the oxidation air and the limestone slurry supply amount of the two stages of absorption towers are controlled to be different, so that the pH values of the two stages of absorption towers are different, and the desulfurization rate and the gypsum crystallization are improved.
The present invention has been described in connection with the embodiments thereof, and the description is not intended to be limiting, and the embodiments shown in the drawings are only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (7)
1. The utility model provides a desulfurization absorption tower, includes absorption tower, chimney (3) and limestone supply thick liquid device (7), its characterized in that: the absorption tower comprises a primary absorption tower (1) and a secondary absorption tower (2), the limestone slurry supply device (7) is respectively communicated with the primary absorption tower (1) and the secondary absorption tower (2), the primary absorption tower (1) and the secondary absorption tower (2) are communicated with each other through a first flue gas discharge pipeline (4) and a return pipe (6), the secondary absorption tower (2) is communicated with a chimney (3) through a second flue gas discharge pipeline (5), the primary absorption tower (1) comprises a primary absorption tower main body (10) and a first slurry circulating system (11), the first slurry circulating system (11) is arranged in the primary absorption tower main body (10), the secondary absorption tower (2) comprises a secondary absorption tower main body (20) and a second slurry circulating system (21), the second slurry circulating system (21) is arranged in the main body (20) of the secondary absorption tower.
2. The desulfurization absorption tower according to claim 1, wherein: be provided with one-level absorption tower entry (100) and one-level absorption tower export (101) on one-level absorption tower main part (10), one-level absorption tower entry (100) set up in one-level absorption tower main part (10) middle part, be equipped with whirl rectification baffle (102) in one-level absorption tower main part (10) on one-level absorption tower entry (100) upper portion, one-level absorption tower export (101) set up at one-level absorption tower main part (10) top, one-level absorption tower main part (10) and gypsum dewatering system (103) intercommunication.
3. The desulfurization absorption tower according to claim 1, wherein: be provided with second grade absorption tower entry (200) and second grade absorption tower export (201) on second grade absorption tower main part (20), second grade absorption tower entry (200) set up in second grade absorption tower main part (20) middle part, second grade absorption tower export (201) set up at second grade absorption tower main part (20) top, second grade absorption tower entry (200) and first grade absorption tower export (101) are through first flue gas discharge pipe (4) intercommunication, second grade absorption tower export (201) and chimney (3) are through second flue gas discharge pipe (5) intercommunication, the upper portion of second thick liquid pipeline (211) is equipped with defroster (202) in second grade absorption tower main part (20).
4. The desulfurization absorption tower according to claim 1, wherein: the first slurry circulating system (11) comprises a first slurry circulating pump (110) and a first slurry conveying pipeline (111), wherein the first slurry circulating pump (110) is arranged on the first slurry conveying pipeline (111), one end of the first slurry conveying pipeline (111) is connected with the tower wall of the lower half part of the first-stage absorption tower main body (10), and the other end of the first slurry conveying pipeline is arranged in the first-stage absorption tower main body (10) on the upper part of the cyclone rectifying partition plate (102).
5. The desulfurization absorption tower according to claim 1, wherein: the second slurry circulating system (21) comprises a second slurry circulating pump (210) and a second slurry conveying pipeline (211), the second slurry circulating pump (210) is arranged on the second slurry conveying pipeline (211), one end of the second slurry conveying pipeline (211) is connected with the lower half part of the tower wall of the second-stage absorption tower main body (20), and the other end of the second slurry circulating pump is arranged in the second-stage absorption tower main body (20) at the upper end of the second-stage absorption tower inlet (200).
6. The desulfurization absorption tower according to claim 4 or 5, wherein: the first slurry transport pipe (111) is provided with a plurality of first nozzles (1110), and the second slurry transport pipe (211) is provided with a plurality of second nozzles (2110).
7. The desulfurization absorption tower according to claim 1, wherein: the limestone slurry supply device (7) is communicated with the primary absorption tower main body (10) and the secondary absorption tower main body (20) through a third slurry conveying pipeline (30) and a fourth slurry conveying pipeline (31) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920003217.6U CN209848668U (en) | 2019-01-02 | 2019-01-02 | Desulfurization absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920003217.6U CN209848668U (en) | 2019-01-02 | 2019-01-02 | Desulfurization absorption tower |
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| CN209848668U true CN209848668U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920003217.6U Active CN209848668U (en) | 2019-01-02 | 2019-01-02 | Desulfurization absorption tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691533A (en) * | 2021-03-23 | 2021-04-23 | 山东金宜善新材料有限公司 | Sodium sulfite absorption tower device |
-
2019
- 2019-01-02 CN CN201920003217.6U patent/CN209848668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691533A (en) * | 2021-03-23 | 2021-04-23 | 山东金宜善新材料有限公司 | Sodium sulfite absorption tower device |
| CN112691533B (en) * | 2021-03-23 | 2021-06-18 | 山东金宜善新材料有限公司 | Sodium sulfite absorption tower device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: Room 1101, building 1, block a, Zhonghai Jingyang mansion, Luyuan District, Changchun City, Jilin Province Patentee after: Jilin Longhua Environmental Protection Group Co.,Ltd. Address before: 130062 building 6, Wuhuan golf community, No.7 Xingyang street, Luyuan District, Changchun City, Jilin Province Patentee before: JILIN PROVINCE LONGHUA ENVIRONMENTAL PROTECTION EQUIPMENT ENGINEERING Co.,Ltd. |
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| CP03 | "change of name, title or address" |