CN220110752U

CN220110752U - Chlorine drying device

Info

Publication number: CN220110752U
Application number: CN202321500050.7U
Authority: CN
Inventors: 杨超松; 柳江峰; 王喜平; 冯斌; 姜禹; 高树斌; 孙健; 申文强; 王伟国; 鲍娜; 张文琴
Original assignee: Xinjiang Huatai Heavy Chemical Co ltd; Xinjiang Zhongtai Chemical Co Ltd
Current assignee: Xinjiang Huatai Heavy Chemical Co ltd; Xinjiang Zhongtai Chemical Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-12-01
Anticipated expiration: 2033-06-13

Abstract

The utility model relates to a chlorine drying device, which belongs to the field of chlorine drying and comprises a cooling system and a drying and regenerating system, wherein the cooling system comprises a first-stage cooler, a second-stage cooler, a third-stage cooler and a chlorine water catcher, the lower part of the first-stage cooler is communicated with the top of the second-stage cooler through a second pipeline, the lower part of the second-stage cooler is communicated with the top of the third-stage cooler through a third pipeline, the lower part of the third-stage cooler is communicated with the lower part of the chlorine water catcher through a fourth pipeline, the top of the chlorine water catcher is communicated with the top of the second-stage cooler through a fifth pipeline, the middle part of the second-stage cooler is communicated with a cold water pipe, and the cooling system is connected with the drying and regenerating system through a pipeline and is used for regenerating and drying the chlorine gas cooled by the cooling system.

Description

Chlorine drying device

Technical Field

The utility model relates to the field of chlorine drying, in particular to a chlorine drying device.

Background

In the production process of the existing chlor-alkali enterprises, the chlorine gas coming out of the electrolytic tank has moisture at the temperature of about 85 ℃, the drying is needed before compression, concentrated sulfuric acid is used as a drying agent in the drying process, the concentrated sulfuric acid is used as dangerous chemicals, the danger is high in the use process, and the dried dilute sulfuric acid is used as dangerous waste, so that the development of the chlor-alkali industry is plagued how to dispose.

The person skilled in the art therefore provides a chlorine drying installation to solve the problems set forth in the background art above.

Disclosure of Invention

The utility model provides a chlorine drying device for solving the technical problem, and aims to realize drying by recycling energy of a cooling system and a drying regeneration system, replace sulfuric acid as a drying agent, eliminate risks caused by using sulfuric acid, solve the problem of dilute sulfuric acid treatment of enterprises and improve site safety.

The technical scheme for solving the technical problems is as follows: the utility model provides a chlorine drying device, includes cooling system and dry regeneration system, cooling system includes one-level cooler, second grade cooler, tertiary cooler and chlorine water trap, the top of one-level cooler is provided with the intake pipe, there is the pre-heater upper portion at one-level cooler middle part through tenth pipeline intercommunication, there is at pre-heater upper portion through tenth pipeline intercommunication one-level cooler middle part, the lower part of one-level cooler has through the second pipeline intercommunication the top of second grade cooler, the lower part of second grade cooler has through the third pipeline intercommunication the top of tertiary cooler, the lower part of tertiary cooler has the lower part of chlorine water trap through the fourth pipeline intercommunication, the top of chlorine water trap has through fifth pipeline intercommunication the top of second grade cooler, the middle part intercommunication of second grade cooler has the cold water pipe, cooling system has through eleventh pipeline and sixth pipeline connection dry regeneration system for carry out regeneration drying to the chlorine after the cooling system cools down.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the chlorine from the electrolytic tank is cooled by the cooling system consisting of the plurality of coolers and the chlorine catcher to reach a certain preset temperature and then enters the drying regeneration system for drying, so that the drying efficiency can be improved, sulfuric acid is replaced as a drying agent, and the site safety is improved;

2. according to the utility model, the chlorine from the electrolytic tank is subjected to three-stage cooling and the chlorine catcher to realize stepped cooling, so that the cold quantity is fully utilized under the cold water by only using an external cold water pipe, and the energy consumption is saved;

3. in the utility model, chlorine water condensed by the three-stage cooling and chlorine catcher enters the chlorine water tank, so that the practicability is improved, and more economic benefits are created.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the bottoms of the primary cooler, the secondary cooler, the tertiary cooler and the chlorine water catcher are respectively communicated with a chlorine water pipeline through a first pipeline, a seventh pipeline, an eighth pipeline and a ninth pipeline.

Further, one end of the chlorine water pipeline far away from the chlorine water catcher is communicated with a chlorine water tank.

Further, the drying regeneration system comprises a first drying tower, a second drying tower and a third drying tower, wherein the first drying tower, the second drying tower and the third drying tower are connected in parallel through pipelines, the first drying tower is communicated with the secondary cooler through a sixth pipeline, and the second drying tower and the third drying tower are communicated with the primary cooler through an eleventh pipeline.

Further, one end of the eleventh pipeline is communicated with the upper part of the primary cooler, and the other end of the eleventh pipeline is communicated with the sixth pipeline.

Further, the bottoms of the first drying tower, the second drying tower and the third drying tower are respectively communicated with an outlet main pipeline through a first outlet pipeline, a second outlet pipeline and a third outlet pipeline.

Further, one end of the outlet main pipeline far away from the first drying tower is communicated with the top of the preheater.

Further, a fifteenth pipeline is arranged at the bottom of the preheater and used for conveying the dried chlorine to a chlorine turbine.

Further, one ends of a twelfth pipeline, a thirteenth pipeline and a fourteenth pipeline are respectively communicated with the first outlet pipeline, the second outlet pipeline and the third outlet pipeline, and sodium hypochlorite pipelines are respectively communicated with the other ends of the twelfth pipeline, the thirteenth pipeline and the fourteenth pipeline.

Further, the drying agents adopted by the first drying tower, the second drying tower and the third drying tower are modified silica gel.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a process flow diagram of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. an air inlet pipe; 2. a primary cooler; 3. a preheater; 4. a first pipe; 5. sodium hypochlorite pipelines; 6. a second pipe; 7. a secondary cooler; 8. a chlorine water catcher; 9. a three-stage cooler; 10. a cold water pipe; 11. a fourth conduit; 12. a sixth conduit; 13. a seventh pipe; 14. an eighth conduit; 15. a ninth conduit; 16. a third conduit; 17. a fifth pipe; 18. a chlorine water pipe; 19. a first drying tower; 20. a second drying tower; 21. a third drying tower; 22. a tenth pipe; 23. an eleventh conduit; 24. a first outlet line; 25. a second outlet line; 26. a third outlet line; 27. an outlet header line; 28. a twelfth duct; 29. a thirteenth conduit; 30. a fourteenth conduit; 31. a fifteenth conduit; 32. a first valve; 33. a second valve; 34. a sixteenth conduit; 35. seventeenth pipe; 36. an eighteenth pipe; 37. a third valve; 38. a fourth valve; 39. a fifth valve; 40. a fourteenth valve; 41. a fifteenth valve; 42. a sixth valve; 43. a seventh valve; 44. an eighth valve; 45. a ninth valve; 46. a tenth valve; 47. an eleventh valve; 48. a twelfth valve; 49. thirteenth valve.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Examples

As shown in fig. 1-2, this embodiment provides a chlorine drying device, the cooling system includes a primary cooler 2, the secondary cooler 7, the tertiary cooler 9 and the chlorine water catcher 8, the top of the primary cooler 2 is provided with an air inlet pipe 1, the upper part of the preheater 3 is connected with the middle part of the primary cooler 2 through a tenth pipeline 22, the lower part of the primary cooler 2 is connected with one end of the second pipeline 6, the other end of the second pipeline 6 is connected with the top of the secondary cooler 7, the lower part of the secondary cooler 7 is connected with one end of the third pipeline 16, the other end of the third pipeline 16 is connected with the top of the tertiary cooler 9, one end of the third pipeline 16 near the secondary cooler 7 is provided with a temperature detector for detecting the temperature of chlorine after being cooled by the secondary cooler 7, the lower part of the tertiary cooler 9 is connected with one end of the fourth pipeline 11, the other end of the fourth pipeline 11 is connected with the other end of the chlorine water catcher 11, the chlorine water is continuously connected with the top of the secondary cooler 9 through the third pipeline 17, the chlorine water catcher is continuously connected with the top of the chlorine water catcher 8 through the third pipeline 9 for regenerating device after being cooled by the secondary cooler 9, the chlorine temperature from the electrolytic tank is obviously reduced in a stepwise manner, and the chlorine water after each condensation flows into the chlorine water tank timely, so that the influence of the excessive chlorine temperature on the drying effect is avoided.

Preferably, in the embodiment, the device further includes a first stage cooler 2, a second stage cooler 7, a third stage cooler 9, and a chlorine water trap 8, where the bottoms of the first stage cooler, the second stage cooler, the third stage cooler, and the chlorine water trap 8 are respectively connected to a chlorine water pipe 18 through a first pipe 4, a seventh pipe 13, an eighth pipe 14, and a ninth pipe 15, so that chlorine water after condensation in each time flows into the chlorine water tank timely, and the influence of the excessive chlorine gas temperature on the drying effect is avoided.

Preferably, in the embodiment, the chlorine water tank is further connected to one end of the chlorine water pipe 18 far away from the chlorine water catcher 8, and the condensed chlorine water flows into the chlorine water tank, so that the device is simple in design and the production efficiency is effectively improved.

Preferably, in an embodiment, the drying and regenerating system further includes a first drying tower 19, a second drying tower 20 and a third drying tower 21, where the first drying tower 19, the second drying tower 20 and the third drying tower 21 are connected in parallel through a pipeline, the top of the first drying tower 19 is communicated with the top of the second drying tower 20 through a sixteenth pipeline 34, one end of the sixteenth pipeline 34 near the top of the second drying tower 20 is provided with a fourth valve 38, the sixteenth pipeline 34 is communicated with the outlet main pipeline 27 through a seventeenth pipeline 35, a third valve 37 is provided on the seventeenth pipeline 35, an eighteenth pipeline 36 is provided between the second drying tower 20 and the third drying tower 21, one end of the eighteenth pipeline 36 is communicated with the top of the third drying tower 21, the other end of the eighteenth pipeline 36 is communicated with the outlet main pipeline 27, according to the actual situation, one drying table can be used as a standby, the unexpected occurrence of the reduction of the production efficiency is avoided, a fifth valve 39 is arranged at one end of the eighteenth pipeline 36 close to the top of the third drying tower 21, the first drying tower 19 is communicated with the secondary cooler 7 through the sixth pipeline 12, a first valve 32 is arranged at one end of the sixth pipeline 12 close to the first drying tower 19, the first cooler 2 is communicated with both the second drying tower 20 and the third drying tower 21 through the eleventh pipeline 23, pipelines are respectively arranged at the tops of the second drying tower 20 and the third drying tower 21 and are communicated with the eleventh pipeline 23, a sixth valve 42 and a seventh valve 43 are respectively arranged on the pipelines, one end of the eleventh pipeline 23 is communicated with the upper part of the first cooler 2, the operator may start the first drying tower 19 and the second drying tower 20 to dry, and use the third drying tower 21 as a regeneration tower, or start the second drying tower 20 and the third drying tower 21 to dry, and use the first drying tower 19 as a regeneration tower, and dry and regenerate the cooled chlorine gas alternately to improve the drying effect.

Preferably, in an embodiment, the upper part of the primary cooler 2 is further connected to one end of the eleventh pipeline 23, the sixth pipeline 12 is connected to the other end of the eleventh pipeline 23, and a second valve 33 is disposed at one end of the eleventh pipeline 23 near the first drying tower 19.

Preferably, in an embodiment, the bottom of the first drying tower 19, the bottom of the second drying tower 20, and the bottom of the third drying tower 21 are respectively connected to one end of a first outlet pipeline 24, one end of a second outlet pipeline 25, and one end of a third outlet pipeline 26, the other ends of the first outlet pipeline 24, the second outlet pipeline 25, and the third outlet pipeline 26 are respectively connected to the outlet main pipeline 27, eighth valves 44, ninth valves 45, and tenth valves 46 are respectively disposed on the first outlet pipeline 24, the second outlet pipeline 25, and the third outlet pipeline 26, a fourteenth valve 40 is disposed between the third outlet pipeline 26 and the eighteenth pipeline 36, a fifteenth valve 41 is disposed between the second outlet pipeline 25 and the seventeenth pipeline 35, one end of the outlet main pipeline 27, which is close to the third outlet pipeline 26, is provided with a fifteenth valve 41, and the valves in the drying device are all electrically controlled by adopting automatic control, thereby avoiding the risk brought about by manual operation.

Preferably, in an embodiment, the end of the outlet header line 27 remote from the first drying tower 19 is connected to the top of the preheater 3.

Preferably, in an embodiment, a fifteenth pipeline 31 is arranged at the bottom of the preheater 3 to send the dried chlorine to a chlorine turbine.

Preferably, in the embodiment, the system further includes one ends of a twelfth pipeline 28, a thirteenth pipeline 29 and a fourteenth pipeline 30 respectively connected to the first outlet pipeline 24, the second outlet pipeline 25 and the third outlet pipeline 26, the other ends of the twelfth pipeline 28, the thirteenth pipeline 29 and the fourteenth pipeline 30 are all connected to a sodium hypochlorite pipeline 5, and an eleventh valve 47, a twelfth valve 48 and a thirteenth valve 49 are respectively arranged on the twelfth pipeline 28, the thirteenth pipeline 29 and the fourteenth pipeline 30, so that a small amount of chlorine gas carried out by the dry wind is sent to a sodium hypochlorite device through the sodium hypochlorite pipeline 5 for airtight recovery, thereby avoiding environmental pollution.

Preferably, in an embodiment, the drying agent adopted by the first drying tower 19, the second drying tower 20 and the third drying tower 21 is modified silica gel.

In this embodiment, when in use, firstly, chlorine (the temperature is about 85 ℃ in general) from the electrolytic tank enters the primary cooler 2 through the air inlet pipe 1, the blower is started to convey air quantity to the preheater 3, the air quantity is required to be kept at 30-40 ℃ to cool the chlorine for the first time, chlorine water condensed by the primary cooler 2 is discharged to the chlorine water pipeline 18 through the first pipeline 4 and is conveyed to the chlorine water tank to be stored, chlorine gas which is not cooled by the primary cooler 2 (detected by the temperature detector, at the moment, the temperature of the chlorine gas is 55-65 ℃) enters the secondary cooler 7 through the second pipeline 6 to be cooled again, chlorine water condensed by the secondary cooler 7 is discharged to the chlorine water pipeline 18 through the seventh pipeline 13 and is conveyed to be stored in the chlorine water tank, chlorine gas which is not condensed by the secondary cooler 7 (detected by the temperature detector), at this time, the temperature of chlorine is 20-30 ℃ and enters the tertiary cooler 9 through the third pipeline 16 for secondary cooling, at this time, a valve of a cold water pipe 10 is required to be started, 5-7 ℃ cold water is injected into the tertiary cooler 9, the third cooling of the chlorine is realized, chlorine water condensed by the tertiary cooler 9 is discharged to the chlorine water pipeline 18 through the eighth pipeline 14 and is sent to a chlorine water tank for storage, chlorine gas which is not cooled by the tertiary cooler 9 (detected by a temperature detector, at this time, the temperature of the chlorine gas is 10.5-12 ℃) enters the chlorine water catcher 8 through the fourth pipeline 11 for catching, liquid caught by the chlorine water catcher 8 is discharged to the chlorine water pipeline 18 through the ninth pipeline 15 and is sent to the chlorine water tank for storage, the gas caught by the chlorine water catcher 8 enters the secondary cooler 7 through the fifth pipeline 17 as cooling medium for heat exchange and temperature rise of the chlorine gas in the secondary cooler 7, when the temperature of the gas trapped by the chlorine water trap 8 is raised to 35-40 ℃ in the secondary cooler 7 by heat exchange, the first valve 32 on the sixth pipeline 12 can be started, and the chlorine gas cooled by the cooling system enters the drying regeneration system for drying;

starting a drying regeneration system, namely drying the first drying tower 19 and the second drying tower 20 as drying towers, regenerating the third drying tower 21 as regeneration towers, wherein the drying agent adopted by the drying towers is modified silica gel, the silica gel is non-dangerous chemicals, so that the safety risk is basically reduced, the drying regeneration systems can be reused, the first valve 32, the eighth valve 44, the fourth valve 38, the ninth valve 45 and the third valve 37 are opened, the fifteenth valve 41 is closed, cooled chlorine gas enters the first drying tower 19 and the second drying tower 20 through a sixth pipeline 12 and a sixteenth pipeline 34 respectively for drying, the dried chlorine gas enters the preheater 3 through a first outlet pipeline 24 and a second outlet pipeline 25 through an outlet total pipeline 27 and is sent to a chlorine turbine, finally, the fifth valve 39 and the tenth valve 46 are closed, the seventh valve 43 and the thirteenth valve 49 are started, hot air in the preheater 3 enters the third drying tower 21 through a tenth pipeline 22 and an eleventh pipeline 23 for regeneration treatment, and the regenerated gas enters a sodium production device through a twelfth pipeline 28 and a sodium production device for sodium recovery; when the second drying tower 20 and the third drying tower 21 are used as drying towers for drying, the first drying tower 19 is used as a regeneration tower for regeneration, the fifth valve 39, the tenth valve 46, the fourth valve 38 and the ninth valve 45 are opened, the first valve 32, the eighth valve 44 and the fourteenth valve 40 are closed, chlorine after being cooled by a cooling system enters the second drying tower 20 and the third drying tower 21 through the sixth pipeline 12 and the sixteenth pipeline 34 for drying, the chlorine after being dried enters the preheater 3 through the second outlet pipeline 25 and the third outlet pipeline 26 through the outlet total pipeline 27 and is sent to a chlorine turbine, finally, the second valve 33 and the eleventh valve 47 are started, hot air in the preheater 3 enters the first drying tower 19 for regeneration treatment, and the gas after regeneration treatment is sent to a sodium hypochlorite device through the twelfth pipeline 28 and the sodium hypochlorite pipeline 5 for producing sodium hypochlorite for airtight recovery.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The utility model provides a chlorine drying device, its characterized in that includes cooling system and dry regeneration system, cooling system includes one-level cooler (2), second grade cooler (7), tertiary cooler (9) and chlorine water trap (8), the top of one-level cooler (2) is provided with intake pipe (1), there is preheater (3) upper portion at one-level cooler (2) middle part through tenth pipeline (22) intercommunication, preheater (3) upper portion is through tenth pipeline (22) intercommunication has one-level cooler (2) middle part, the lower part of one-level cooler (2) is through second pipeline (6) intercommunication has the top of second grade cooler (7), the lower part of second grade cooler (7) is through third pipeline (16) intercommunication has the top of tertiary cooler (9), the lower part of tertiary cooler (9) is through fourth pipeline (11) intercommunication has the lower part of chlorine water trap (8), the top of chlorine water trap (8) is through fifth pipeline (17) intercommunication has second grade cooler (7) and the top of regenerating system (12), and the device is used for regenerating and drying the chlorine after being cooled by the cooling system.

2. Chlorine drying installation according to claim 1, characterized in that the bottoms of the primary cooler (2), the secondary cooler (7), the tertiary cooler (9) and the chlorine water trap (8) are respectively connected with a chlorine water pipe (18) through a first pipe (4), a seventh pipe (13), an eighth pipe (14) and a ninth pipe (15).

3. A chlorine drying installation according to claim 2, wherein the end of the chlorine water conduit (18) remote from the chlorine water trap (8) is connected to a chlorine water tank.

4. A chlorine drying installation according to claim 3, characterized in that the drying regeneration system comprises a first drying tower (19), a second drying tower (20) and a third drying tower (21), the first drying tower (19), the second drying tower (20) and the third drying tower (21) being connected in parallel by pipes, the first drying tower (19) being connected with the secondary cooler (7) by the sixth pipe (12), the second drying tower (20) and the third drying tower (21) being connected with the primary cooler (2) by the eleventh pipe (23).

5. The chlorine drying apparatus according to claim 4, wherein one end of said eleventh pipe (23) is connected to an upper portion of said primary cooler (2), and the other end of said eleventh pipe (23) is connected to said sixth pipe (12).

6. The chlorine drying installation according to claim 5, characterized in that the bottoms of the first drying tower (19), the second drying tower (20) and the third drying tower (21) are connected with an outlet main line (27) via a first outlet line (24), a second outlet line (25) and a third outlet line (26), respectively.

7. A chlorine drying installation according to claim 6, wherein the end of the outlet header line (27) remote from the first drying tower (19) is connected to the top of the preheater (3).

8. A chlorine drying installation according to claim 7, characterized in that the bottom of the preheater (3) is provided with a fifteenth conduit (31) for feeding dried chlorine to a chlorine turbine.

9. The chlorine drying apparatus according to claim 8, wherein one end of a twelfth pipe (28), a thirteenth pipe (29) and a fourteenth pipe (30) are respectively connected to the first outlet pipe (24), the second outlet pipe (25) and the third outlet pipe (26), and the other ends of the twelfth pipe (28), the thirteenth pipe (29) and the fourteenth pipe (30) are respectively connected to a sodium hypoid pipe (5).

10. The chlorine drying installation according to claim 9, characterized in that the drying agent employed in the first drying column (19), the second drying column (20) and the third drying column (21) is a modified silica gel.