CN215373660U - A waste heat recovery device for caustic soda production - Google Patents
A waste heat recovery device for caustic soda production Download PDFInfo
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- CN215373660U CN215373660U CN202121444500.6U CN202121444500U CN215373660U CN 215373660 U CN215373660 U CN 215373660U CN 202121444500 U CN202121444500 U CN 202121444500U CN 215373660 U CN215373660 U CN 215373660U
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Abstract
The utility model discloses a waste heat recovery device for caustic soda production, which relates to the technical field of caustic soda production equipment and comprises a cyclone separator, a primary heat exchanger, a secondary heat exchanger and an electric dust remover, wherein an air inlet of the cyclone separator is connected with an input pipe through a flange, an air outlet of the cyclone separator is connected with an air inlet of the primary heat exchanger through a pipeline, an air outlet of the primary heat exchanger is connected with an air inlet of the secondary heat exchanger through a pipeline, the waste heat recovery device for caustic soda production adopts two groups of heat exchangers for cold and heat exchange, the primary heat exchanger is used for exchanging most of heat, the rest heat is continuously subjected to heat exchange with a cold medium through the secondary heat exchanger, the heat exchange efficiency is improved, meanwhile, a dust removal system is arranged at the front stage and the rear stage of waste heat recovery, the dust removal system is used for reducing the amount of impurities accumulated in the heat exchangers before recovery, and the thermal contact of heat exchange copper pipes in the heat exchangers is improved, the gas emission requirement can be met after the recovery.
Description
Technical Field
The utility model relates to the technical field of caustic soda production equipment, in particular to a waste heat recovery device for caustic soda production.
Background
Sodium hydroxide is commonly called caustic soda, caustic soda and caustic soda, is strong caustic soda with strong corrosivity, is generally in a sheet or particle form, is easy to dissolve in water and form an alkaline solution, has deliquescence, and is easy to absorb water vapor and carbon dioxide in air.
Whether the causticizing method or the electrolytic method generates a large amount of heat and gas in the process of producing caustic soda, the heat is generally neutralized by a cooling device and is wasted, and the daily life of an enterprise needs additional heat supply.
SUMMERY OF THE UTILITY MODEL
The utility model provides a waste heat recovery device for caustic soda production, which has the advantages of high heat exchange efficiency, energy utilization rate improvement and service life improvement and solves the problems in the prior art.
In order to realize the purposes of high heat exchange efficiency, energy utilization rate improvement and service life improvement, the utility model provides the following technical scheme: a waste heat recovery device for caustic soda production comprises a cyclone separator, a primary heat exchanger, a secondary heat exchanger and an electric dust remover, the air inlet of the cyclone separator is connected with an input pipe through a flange, the air outlet of the cyclone separator is connected with the air inlet of the first-stage heat exchanger through a pipeline, the air outlet of the first-stage heat exchanger is connected with the air inlet of the second-stage heat exchanger through a pipeline, the top of the first-stage heat exchanger is connected with a first water supply pipe through a flange, the bottom of the first-stage heat exchanger is connected with a first drainage pipe through a flange, the air outlet of the second-stage heat exchanger is connected with the air inlet of the electric dust collector through a pipeline, and the top of the second-stage heat exchanger is connected with a second water supply pipe through a flange, the bottom of the second-stage heat exchanger is connected with a second water drain pipe through a flange, and the gas outlet of the electric dust collector is connected with an output pipe through a flange.
As a preferred technical scheme of the utility model, heat exchange copper pipes are respectively arranged in the primary heat exchanger and the secondary heat exchanger, partition plates are respectively packaged at the head end and the tail end of each heat exchange copper pipe, and the spaces between the head end and the tail end of the primary heat exchanger and the space between the head end and the tail end of the secondary heat exchanger and the partition plates are respectively a gas passing chamber and a gas outlet chamber.
As a preferred technical scheme of the present invention, the air inlets and the air outlets of the primary heat exchanger and the secondary heat exchanger are respectively located at the air passing chamber and the air outlet chamber, and the first water supply pipe, the first water discharge pipe, the second water supply pipe and the second water discharge pipe are respectively located at the spaces where the heat exchange copper pipes are stored in the primary heat exchanger and the secondary heat exchanger.
As a preferred technical scheme of the utility model, stop valves are respectively arranged on the input pipe and the output pipe, and a first regulating valve is arranged on a pipeline connecting an air outlet of the cyclone separator and an air inlet of the primary heat exchanger.
As a preferred technical scheme of the utility model, a second regulating valve is arranged on a pipeline connecting an air outlet of the primary heat exchanger and an air inlet of the secondary heat exchanger, and a third regulating valve is arranged on a pipeline connecting an air outlet of the secondary heat exchanger and an air inlet of the electric dust collector.
As a preferred technical solution of the present invention, the first water supply pipe, the first drain pipe, the second water supply pipe and the second drain pipe are all installed with flow valves, and are both externally connected with a water supply system, and are both externally connected with a water recovery system.
Compared with the prior art, the utility model provides a waste heat recovery device for caustic soda production, which has the following beneficial effects:
this a waste heat recovery device for caustic soda production adopts two sets of heat exchangers to carry out the cold and heat exchange, and the one-level heat exchanger is used for exchanging most heat, and remaining heat continues to take place the heat exchange through second grade heat exchanger and cold medium, improves heat exchange efficiency, has all configured dust pelletizing system in waste heat recovery's front and back stage simultaneously, is used for reducing the impurity amount of accumulation in the heat exchanger before retrieving, improves the thermal contact nature of heat transfer copper pipe in the heat exchanger, can reach the gas emission requirement after retrieving.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a primary heat exchanger of the present invention;
fig. 3 is a cross-sectional view of a secondary heat exchanger of the present invention.
In the figure: 1. a cyclone separator; 2. a primary heat exchanger; 3. a secondary heat exchanger; 4. an electric dust collector; 5. an input tube; 6. a first water supply pipe; 7. a first drain pipe; 8. a second water supply pipe; 9. a second drain pipe; 10. an output pipe; 11. a heat exchange copper pipe; 12. a partition plate; 13. a gas passing chamber; 14. an air outlet chamber; 15. a stop valve; 16. a first regulating valve; 17. a second regulating valve; 18. a third regulating valve; 19. a flow valve.
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.
Referring to fig. 1-3, the utility model discloses a waste heat recovery device for caustic soda production, comprising a cyclone separator 1, a primary heat exchanger 2, a secondary heat exchanger 3 and an electric dust remover 4, wherein an air inlet of the cyclone separator 1 is connected with an input pipe 5 through a flange, an air outlet of the cyclone separator 1 is connected with an air inlet of the primary heat exchanger 2 through a pipeline, an air outlet of the primary heat exchanger 2 is connected with an air inlet of the secondary heat exchanger 3 through a pipeline, the top of the primary heat exchanger 2 is connected with a first water supply pipe 6 through a flange, the bottom of the primary heat exchanger 2 is connected with a first water discharge pipe 7 through a flange, an air outlet of the secondary heat exchanger 3 is connected with an air inlet of the electric dust remover 4 through a pipeline, the top of the secondary heat exchanger 3 is connected with a second water supply pipe 8 through a flange, the bottom of the secondary heat exchanger 3 is connected with a second water discharge pipe 9 through a flange, the gas outlet of electrostatic precipitator 4 has output tube 10 through flange joint, adopts two sets of heat exchangers to carry out the cold and heat exchange, and one-level heat exchanger 2 is used for exchanging most heat, and remaining heat continues to take place the heat exchange through second grade heat exchanger 3 and cold medium, improves heat exchange efficiency, has all configured dust pelletizing system in waste heat recovery's front and back stage simultaneously, is used for reducing the impurity volume of accumulation in the heat exchanger before retrieving, improves heat exchange copper pipe 11's in the heat exchanger thermal contact nature, can reach the gas emission requirement after retrieving.
Specifically, heat exchange copper pipes 11 are installed in the first-stage heat exchanger 2 and the second-stage heat exchanger 3, partition plates 12 are packaged at the head end and the tail end of each heat exchange copper pipe 11, and spaces between the head end and the tail end of the first-stage heat exchanger 2 and the tail end of the second-stage heat exchanger 3 and the partition plates 12 are respectively a gas passing chamber 13 and a gas outlet chamber 14.
In this embodiment, after the first-stage heat exchanger 2 and the second-stage heat exchanger 3 are filled with cold water medium, hot gas generated by caustic soda production is filled into the heat exchange copper pipe 11, and heat exchange can be performed.
Specifically, the air inlets and the air outlets of the first-stage heat exchanger 2 and the second-stage heat exchanger 3 are respectively located at the air passing chamber 13 and the air outlet chamber 14, and the first water supply pipe 6, the first water discharge pipe 7, the second water supply pipe 8 and the second water discharge pipe 9 are respectively located at the space where the first-stage heat exchanger 2 and the second-stage heat exchanger 3 store the heat exchange copper pipe 11.
In this embodiment, hot gas generated in caustic soda production is introduced into the gas chamber 13 through the gas inlets of the first-stage heat exchanger 2 and the second-stage heat exchanger 3, and then introduced into the heat exchange copper pipe 11, after heat exchange, gas generated in caustic soda production is discharged through the gas outlets of the gas outlet chamber 14 of the first-stage heat exchanger 2 and the second-stage heat exchanger 3, and cold water medium is introduced into the space where the heat exchange copper pipe 11 is stored in the first-stage heat exchanger 2 and the second-stage heat exchanger 3.
Specifically, stop valves 15 are installed on the input pipe 5 and the output pipe 10, and a first regulating valve 16 is installed on a pipeline connecting an air outlet of the cyclone separator 1 and an air inlet of the primary heat exchanger 2.
In the present embodiment, the shut-off valve 15 has a very reliable shut-off function for controlling the flow of the gas generated in the production of caustic soda, and the first regulating valve 16 functions as a variable resistance in the pipe to regulate parameters such as the pressure, flow rate, etc. of the gas generated in the production of caustic soda.
Specifically, install second governing valve 17 on the pipeline that the gas outlet of one-level heat exchanger 2 is connected with the air inlet of second grade heat exchanger 3, install third governing valve 18 on the pipeline that the gas outlet of second grade heat exchanger 3 is connected with the air inlet of electrostatic precipitator 4.
In the present embodiment, the second regulating valve 17 and the third regulating valve 18 both have the same working principle as the first regulating valve 16, and regulate parameters such as pressure and flow of the gas generated in the caustic soda production.
Specifically, all install flow valve 19 on first delivery pipe 6, first delivery pipe 7, second delivery pipe 8 and the second drain pipe 9, and first delivery pipe 6 and second delivery pipe 8 all external water supply system, first delivery pipe 7 and second drain pipe 9 all external water recovery system.
In this embodiment, the flow valve 19 is used for the flow control of water system, adopts two sets of heat exchangers to carry out cold and heat exchange, and one-level heat exchanger 2 is used for exchanging most heat, and remaining heat continues to take place the heat exchange through second grade heat exchanger 3 and cold medium, improves heat exchange efficiency.
The working principle and the using process of the utility model are as follows: when the heat exchanger is used, two groups of heat exchangers are used for exchanging cold and heat, the first-stage heat exchanger 2 is used for exchanging most of heat, the rest heat is continuously subjected to heat exchange with a cold medium through the second-stage heat exchanger 3, the heat exchange efficiency is improved, meanwhile, dust removal systems are arranged in the front stage and the rear stage of waste heat recovery, the accumulated impurity amount in the heat exchangers is reduced before recovery, the thermal contact of heat exchange copper pipes 11 in the heat exchangers is improved, and the gas emission requirement can be met after recovery.
To sum up, this a waste heat recovery device for caustic soda production adopts two sets of heat exchangers to carry out the cold and heat exchange, and one-level heat exchanger 2 is used for exchanging most heat, and remaining heat continues to take place the heat exchange through second grade heat exchanger 3 and cold medium, improves heat exchange efficiency, has all configured dust pelletizing system in waste heat recovery's front and back stage simultaneously, is used for reducing the impurity volume of accumulation in the heat exchanger before retrieving, improves the thermal contact of heat transfer copper pipe 11 in the heat exchanger, can reach the gas emission requirement after retrieving.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a waste heat recovery device for caustic soda production, includes cyclone (1), one-level heat exchanger (2), second grade heat exchanger (3) and electrostatic precipitator (4), its characterized in that: the air inlet of the cyclone separator (1) is connected with an input pipe (5) through a flange, the air outlet of the cyclone separator (1) is connected with the air inlet of the first-stage heat exchanger (2) through a pipeline, the air outlet of the primary heat exchanger (2) is connected with the air inlet of the secondary heat exchanger (3) through a pipeline, the top of the primary heat exchanger (2) is connected with a first water supply pipe (6) through a flange, the bottom of the primary heat exchanger (2) is connected with a first water drainage pipe (7) through a flange, the air outlet of the secondary heat exchanger (3) is connected with the air inlet of the electric dust collector (4) through a pipeline, the top of the secondary heat exchanger (3) is connected with a second water supply pipe (8) through a flange, the bottom of the secondary heat exchanger (3) is connected with a second water discharge pipe (9) through a flange, the air outlet of the electric dust collector (4) is connected with an output pipe (10) through a flange.
2. The waste heat recovery device for caustic soda production according to claim 1, characterized in that: heat exchange copper pipes (11) are installed in the first-stage heat exchanger (2) and the second-stage heat exchanger (3), partition plates (12) are packaged at the head end and the tail end of each heat exchange copper pipe (11), and spaces, between the head end and the tail end of the first-stage heat exchanger (2) and the tail end of the second-stage heat exchanger (3), of the partition plates (12) are respectively an air passing chamber (13) and an air outlet chamber (14).
3. The waste heat recovery device for caustic soda production according to claim 2, characterized in that: the air inlet and outlet of the first-stage heat exchanger (2) and the second-stage heat exchanger (3) are respectively located at the air passing chamber (13) and the air outlet chamber (14), and the first water supply pipe (6), the first water discharge pipe (7), the second water supply pipe (8) and the second water discharge pipe (9) are respectively located at the space where the heat exchange copper pipe (11) is stored in the first-stage heat exchanger (2) and the second-stage heat exchanger (3).
4. The waste heat recovery device for caustic soda production according to claim 1, characterized in that: stop valves (15) are installed on the input pipe (5) and the output pipe (10), and a first regulating valve (16) is installed on a pipeline where an air outlet of the cyclone separator (1) is connected with an air inlet of the first-stage heat exchanger (2).
5. The waste heat recovery device for caustic soda production according to claim 1, characterized in that: install second governing valve (17) on the pipeline that the gas outlet of one-level heat exchanger (2) is connected with the air inlet of second grade heat exchanger (3), install third governing valve (18) on the pipeline that the gas outlet of second grade heat exchanger (3) is connected with the air inlet of electrostatic precipitator (4).
6. The waste heat recovery device for caustic soda production according to claim 1, characterized in that: all install flow valve (19) on first delivery pipe (6), first delivery pipe (7), second delivery pipe (8) and second drain pipe (9), and first delivery pipe (6) and second delivery pipe (8) all external water supply system, first delivery pipe (7) and second drain pipe (9) all external water recovery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121444500.6U CN215373660U (en) | 2021-06-28 | 2021-06-28 | A waste heat recovery device for caustic soda production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121444500.6U CN215373660U (en) | 2021-06-28 | 2021-06-28 | A waste heat recovery device for caustic soda production |
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| Publication Number | Publication Date |
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| CN215373660U true CN215373660U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121444500.6U Active CN215373660U (en) | 2021-06-28 | 2021-06-28 | A waste heat recovery device for caustic soda production |
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| CN (1) | CN215373660U (en) |
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2021
- 2021-06-28 CN CN202121444500.6U patent/CN215373660U/en active Active
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