CN217248977U - Adsorbent desorption regeneration system - Google Patents
Adsorbent desorption regeneration system Download PDFInfo
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- CN217248977U CN217248977U CN202220958156.0U CN202220958156U CN217248977U CN 217248977 U CN217248977 U CN 217248977U CN 202220958156 U CN202220958156 U CN 202220958156U CN 217248977 U CN217248977 U CN 217248977U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to the technical field of adsorbent regeneration, and discloses an adsorbent desorption regeneration system, which comprises a regeneration device; the regeneration device comprises a desorption device and a nitrogen generator; the regeneration device also comprises a circulating gas heating device and a waste heat heating device; the exhaust port of the desorption device is communicated with a circulating gas pipeline A through a circulating gas outlet valve; the air inlet of the desorption device is communicated with a circulating air pipeline B through a circulating air inlet valve; the end part of the circulating gas pipeline A is communicated with the residual heat heating device and the circulating gas heating device in sequence and then is communicated with the circulating gas pipeline B. The utility model adopts hot nitrogen gas for cyclic heating, adopts nitrogen gas replacement and pressure stabilization, and the desorbed gas forms high-concentration organic gas which is then incinerated and purified; the desorption rate is high, the anaerobic desorption is realized, and the operation is safe; the concentration of desorbed organic matters is high, and the burning process is energy-saving; just the utility model discloses repeated recycle burns the high-temperature gas that the back obtained, further saving the resource.
Description
Technical Field
The utility model belongs to the technical field of adsorbent regeneration, in particular to an adsorbent desorption regeneration system.
Background
An adsorbent, also called an absorbent, is a solid substance that can effectively adsorb some of its components from a gas or liquid. Has large specific surface, proper pore structure and surface structure; strong adsorption capacity to adsorbates; generally do not chemically react with the adsorbate and the media; the manufacturing is convenient and the regeneration is easy; has excellent adsorbability and mechanical property. Commonly used adsorbents include silica gel, activated carbon, zeolite molecular sieves, and the like.
In industrial production and air pollution control, it is necessary to use adsorbents (activated carbon, zeolite molecular sieves, etc.) to adsorb volatile organic compounds in the gas to purify the gas. After the adsorbent is saturated, the desorption and regeneration device is used, the method of heating by hot air flow is adopted, the adsorbed substance is desorbed, and the adsorbent is regenerated and recycled. The desorbed organic matter is discharged along with hot air flow, can be recycled by condensation, and can not be used for incineration treatment. However, in the prior art, the temperature cannot be too high when air is used for desorption, fire is easy to occur when the temperature is too high, and the desorption is not clean at low temperature, so that the regeneration effect is influenced; the desorption of steam produces organic condensed wastewater, which brings secondary pollution. And the desorption regeneration device in the prior art also has the defects of low desorption rate and high desorption energy consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming current technical problem, providing an adsorbent desorption regeneration system.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
an adsorbent desorption regeneration system comprises a regeneration device; the regeneration device comprises a desorption device and a nitrogen generator; the regeneration device also comprises a circulating gas heating device and a waste heat heating device;
the exhaust port of the desorption device is communicated with a circulating gas pipeline A through a circulating gas outlet valve; the air inlet of the desorption device is communicated with a circulating air pipeline B through a circulating air inlet valve; the end part of the circulating gas pipeline A is communicated with the residual heat heating device and the circulating gas heating device in sequence and then is communicated with the circulating gas pipeline B;
a dust remover and a circulating fan are sequentially arranged on the circulating gas pipeline A on the right side of the circulating gas outlet valve; a nitrogen generator is connected to the circulating gas pipeline A on the right side of the circulating fan through a nitrogen pipe; a nitrogen valve is arranged on the nitrogen pipe;
a desorption gas discharge pipeline is communicated with the circulating gas pipeline A between the circulating fan and the nitrogen pipe.
Preferably, the regeneration device further comprises a cooling device; the cooling device is a heat exchanger;
a heat medium inlet of the cooling device is communicated with a circulating gas pipeline A on the left side of the waste heat heating device through a pipeline; the heat medium outlet of the cooling device is communicated with a circulating gas pipeline B on the left side of the circulating gas heating device through a pipeline; and a cooling valve is also arranged on a pipeline communicated with the heat medium outlet of the cooling device.
Preferably, the left side of the cooling device is also provided with a connecting branch pipe; two ends of the connecting branch pipe are respectively communicated with a circulating gas pipeline A and a circulating gas pipeline B; the connecting branch pipe is also provided with a pay-line valve.
Preferably, a temperature adjusting valve is arranged on the circulating gas pipeline B between the cooling device and the circulating gas heating device.
Preferably, the adsorbent desorption regeneration system further comprises a thermal incineration device;
the thermal incineration device comprises an air heating device, a mixed gas heating device and a heating combustion chamber; the air heating device and the mixed gas heating device are both heat exchangers;
the cold medium inlet of the air heating device is communicated with an air source; the cold medium outlet of the air heating device is communicated with the cold medium inlet of the mixed gas heating device through a mixed connecting pipe; a flame arrester is arranged on the mixed connecting pipe;
a cold medium outlet of the mixed gas heating device is communicated with an air inlet of the heating combustion chamber; the gas outlet of the heating combustion chamber is communicated with the heat medium inlet of the mixed gas heating device; the heat medium outlet of the mixed gas heating device is communicated with the heat medium inlet of the air heating device;
the desorption gas discharge pipeline is communicated with the mixed connecting pipe through a flame arrester; an exhaust valve is arranged on the desorption gas discharge pipeline.
Preferably, the waste heat heating device is a heat exchanger; a heat medium inlet of the waste heat heating device is communicated with a heat medium outlet of the air heating device;
the hot medium outlet of the waste heat heating device is communicated with the incineration fan.
The utility model discloses an action principle:
the saturated adsorbent (the adsorbent refers to activated carbon, zeolite molecular sieve and the like) adsorbing organic matters is placed in a desorption device, a circulating gas inlet valve, a circulating gas outlet valve, a nitrogen valve and an exhaust valve are opened when desorption is started, a circulating fan and a nitrogen generator are started, nitrogen enters a system through the nitrogen valve and is discharged from a desorption gas discharge pipeline, gas replacement is carried out on each pipeline and each device passing through the nitrogen valve, when the oxygen content in the discharged gas is less than 5%, the replacement is completed, and heating desorption can be started.
In the desorption process, the circulating nitrogen is heated by a waste heat heating device and a circulating gas heating device, the waste heat heating device heats the circulating nitrogen by using high-temperature gas from the thermal incineration device, and the circulating gas heating device heats the circulating gas by using electricity or other heating mediums such as steam. When the temperature of the circulating nitrogen is high, the temperature can be adjusted by using a temperature adjusting valve, for example, the temperature adjusting valve is closed or turned down, so that the circulating nitrogen does not pass through or passes through the circulating gas heating device and the waste heat heating device in a small amount, and the circulation is completed by connecting the branch pipes. During desorption, the nitrogen valve is kept opened, nitrogen is filled, the pressure of the whole system is stabilized, and desorption gas is formed and discharged from the desorption gas discharge pipeline.
Desorbed gas (hereinafter referred to as desorption gas) sequentially passes through a desorption gas discharge pipeline, an exhaust valve and a flame arrester, enters a mixed connecting pipe, is mixed with air which enters from a cold medium inlet of an air heating device and is heated by the air heating device, and then enters a heating combustion chamber after being heated by a mixed gas heating device; the heating combustion chamber is controlled at the temperature of 720-810 ℃ under the auxiliary action of electricity or fuel oil and fuel gas, so that organic matters in the desorption gas are oxidized into water, carbon dioxide and other easily-treated substances, and pollution is eliminated. High-temperature gas obtained after incineration is extracted by an incineration fan and sequentially passes through a mixed gas heating device, an air heating device and a waste heat heating device for heat exchange, so that the effect of heat recovery is achieved. Wherein, the gas mixture heating device heats the gas mixture of air and desorption gas, and air heating device heats the air, and waste heat heating device heats circulation nitrogen gas.
When the organic matter in the circulating nitrogen is reduced to 100mg/m 3 The desorption is completed as follows; at the moment, closing the auxiliary line valve and the temperature adjusting valve, opening the cooling valve, cooling the adsorbent in the desorption device after the circulating nitrogen is cooled by the cooling device, and finishing the regeneration of the adsorbent after the temperature is reduced to below 50 ℃. In order to remove dust brought out during desorption, a dust remover is adopted to filter and remove dust from the circulating nitrogen.
The saturated adsorbent can be desorbed in three ways: firstly, the adsorbent is desorbed in situ, and after the adsorbent is saturated, the adsorbent is desorbed in the original adsorber in situ, and more than two adsorbers can be used alternatively. The adsorber in this kind of mode is equal to the utility model provides a desorption ware. And secondly, taking out the adsorbent for desorption. After the adsorbent is saturated, the adsorbent is taken out from the original adsorber, placed into a special desorber for desorption, and then placed into the original adsorber. Thirdly, the adsorbent in-situ adsorber shifts for desorption. And after the adsorbent is saturated, transferring the adsorber to a fixed desorption site, and after desorption, transferring the adsorber to a system needing adsorption again. The adsorber in this kind of mode is equal to the utility model provides a desorption ware.
The undefined components in the present invention all adopt the conventional means in the field, for example, the desorption device, the nitrogen generator, the heat exchanger, the dust remover, the flame arrester, the heating combustion chamber, etc. all select the ones commonly used in the field, and those skilled in the art can select the model and the installation mode according to the actual use requirement, and clearly know how to install and control the components, and are not described in detail herein.
The utility model discloses following beneficial effect has been reached:
the utility model has simple structure and convenient operation; the utility model adopts hot nitrogen gas for cyclic heating, adopts nitrogen gas replacement and pressure stabilization, and the desorbed gas forms high-concentration organic gas which is then incinerated and purified; the desorption rate is high, the anaerobic desorption is realized, and the operation is safe; the concentration of desorbed organic matters is high, and the burning process is energy-saving; just the utility model discloses repeated recycle burns the high-temperature gas that the back obtained, further saving the resource.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a desorption device; 2. a nitrogen generator; 3. a circulating gas heating device; 4. a waste heat heating device; 5. a circulating gas outlet valve; 6. a circulating gas pipeline A; 7. a recycle gas inlet valve; 8. a recycle gas line B; 9. an incineration fan; 10. an exhaust valve; 11. a dust remover; 12. a circulating fan; 13. a nitrogen gas pipe; 14. a nitrogen gas valve; 15. a desorption gas discharge pipeline; 16. a cooling device; 17. a cooling valve; 18. connecting branch pipes; 19. a service valve; 20. a temperature regulating valve; 21. an air heating device; 22. a mixed gas heating device; 23. heating the combustion chamber; 24. a mixing connection pipe; 25. a flame arrestor; 26. activated carbon; 27. an explosion-proof plate.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.
Examples
As shown in fig. 1, an adsorbent desorption regeneration system includes a regeneration device; the regeneration device comprises a desorption device 1 and a nitrogen generator 2; the regeneration device also comprises a circulating gas heating device 3 and a waste heat heating device 4;
the exhaust port of the desorption device 1 is communicated with a circulating gas pipeline A6 through a circulating gas outlet valve 5; the air inlet of the desorption device 1 is communicated with a circulating air pipeline B8 through a circulating air inlet valve 7; the end part of the circulating gas pipeline A6 is communicated with the residual heat heating device 4 and the circulating gas heating device 3 in sequence and then communicated with the circulating gas pipeline B8;
a dust remover 11 and a circulating fan 12 are sequentially arranged on a circulating gas pipeline A6 on the right side of the circulating gas outlet valve 5; a nitrogen generator 2 is connected to the circulating gas pipeline A on the right side of the circulating fan 12 through a nitrogen pipe 13; a nitrogen valve 14 is arranged on the nitrogen pipe 13;
a desorption gas discharge pipeline 15 is communicated with the circulating gas pipeline A between the circulating fan 12 and the nitrogen pipe 13.
The regeneration device also includes a cooling device 16; the cooling device 16 is a heat exchanger;
a heat medium inlet of the cooling device 16 is communicated with a circulating gas pipeline A on the left side of the waste heat heating device 4 through a pipeline; the heat medium outlet of the cooling device 16 is communicated with a circulating gas pipeline B on the left side of the circulating gas heating device 3 through a pipeline; a cooling valve 17 is also provided on the pipe communicating with the heat medium outlet of the cooling device 16.
The left side of the cooling device 16 is also provided with a connecting branch pipe 18; two ends of the connecting branch pipe 18 are respectively communicated with the circulating gas pipeline A and the circulating gas pipeline B; the connecting branch pipe 18 is also provided with a secondary line valve 19.
A temperature control valve 20 is provided in the circulating gas line B between the cooling device 16 and the circulating gas heating device 3.
The adsorbent desorption regeneration system also comprises a thermal power incineration device;
the thermal incineration device comprises an air heating device 21, a mixed gas heating device 22 and a heating combustion chamber 23; the air heating device 21 and the mixed gas heating device 22 are both heat exchangers;
the cold medium inlet of the air heating device 21 is communicated with an air source; the cold medium outlet of the air heating device 21 is communicated with the cold medium inlet of the mixed gas heating device 22 through a mixed connecting pipe 24; a flame arrester 25 is arranged on the mixing connecting pipe 24;
the cold medium outlet of the mixed gas heating device 22 is communicated with the air inlet of the heating combustion chamber 23; the gas outlet of the heating combustion chamber 23 is communicated with the heat medium inlet of the mixed gas heating device 22; the heat medium outlet of the mixed gas heating device 22 is communicated with the heat medium inlet of the air heating device 21;
the desorption gas discharge pipeline 15 is communicated with a mixed connecting pipe 24 through a flame arrester 25; the desorption gas discharge pipeline 15 is provided with an exhaust valve 10.
The waste heat heating device 4 is a heat exchanger; a heat medium inlet of the waste heat heating device 4 is communicated with a heat medium outlet of the air heating device 21; the heat medium outlet of the residual heat heating device 4 is communicated with the incineration fan 9.
In this embodiment, the activated carbon 26 to be desorbed is placed in the desorber. The desorber in this embodiment is a closed container provided with a feed inlet for facilitating the entry of activated carbon, a discharge outlet for facilitating the discharge of activated carbon, and related components for supporting activated carbon, and other components, which are not shown in the drawings. The desorber is a device commonly used in the art, and the structure and the using method thereof are well known to those skilled in the art, and those skilled in the art can select the desired desorber according to the actual using requirement.
The cooling device of the embodiment is provided with a corresponding cold medium inlet and a corresponding cold medium outlet, and the cold medium used here is cooling water. The top of the heating combustion chamber of the embodiment is provided with an explosion-proof plate 27, so that the heating combustion chamber is safer to use. The circulating gas heating device of the embodiment adopts an electric heating device for heating the brickwork.
The technical scheme of the utility model is not restricted to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (6)
1. An adsorbent desorption regeneration system comprises a regeneration device; the regeneration device comprises a desorption device and a nitrogen generator; the method is characterized in that: the regeneration device also comprises a circulating gas heating device and a waste heat heating device;
the exhaust port of the desorption device is communicated with a circulating gas pipeline A through a circulating gas outlet valve; the air inlet of the desorption device is communicated with a circulating air pipeline B through a circulating air inlet valve; the end part of the circulating gas pipeline A is communicated with the residual heat heating device and the circulating gas heating device in sequence and then is communicated with the circulating gas pipeline B;
a dust remover and a circulating fan are sequentially arranged on the circulating gas pipeline A on the right side of the circulating gas outlet valve; a nitrogen generator is connected to the circulating gas pipeline A on the right side of the circulating fan through a nitrogen pipe; a nitrogen valve is arranged on the nitrogen pipe;
a desorption gas discharge pipeline is communicated with the circulating gas pipeline A between the circulating fan and the nitrogen pipe.
2. The adsorbent desorption regeneration system of claim 1 wherein: the regeneration device also comprises a cooling device; the cooling device is a heat exchanger;
a heat medium inlet of the cooling device is communicated with a circulating gas pipeline A on the left side of the waste heat heating device through a pipeline; the heat medium outlet of the cooling device is communicated with a circulating gas pipeline B on the left side of the circulating gas heating device through a pipeline; and a cooling valve is also arranged on a pipeline communicated with the heat medium outlet of the cooling device.
3. The adsorbent desorption regeneration system of claim 2 wherein: the left side of the cooling device is also provided with a connecting branch pipe; two ends of the connecting branch pipe are respectively communicated with a circulating gas pipeline A and a circulating gas pipeline B; the connecting branch pipe is also provided with a paying valve.
4. The adsorbent desorption regeneration system of claim 3 wherein: and a temperature regulating valve is arranged on a circulating gas pipeline B between the cooling device and the circulating gas heating device.
5. The adsorbent desorption regeneration system of claim 4 wherein: the adsorbent desorption regeneration system also comprises a thermal power incineration device;
the thermal incineration device comprises an air heating device, a mixed gas heating device and a heating combustion chamber; the air heating device and the mixed gas heating device are both heat exchangers;
the cold medium inlet of the air heating device is communicated with an air source; the cold medium outlet of the air heating device is communicated with the cold medium inlet of the mixed gas heating device through a mixed connecting pipe; a flame arrester is arranged on the mixed connecting pipe;
a cold medium outlet of the mixed gas heating device is communicated with an air inlet of the heating combustion chamber; the gas outlet of the heating combustion chamber is communicated with the heat medium inlet of the mixed gas heating device; the heat medium outlet of the mixed gas heating device is communicated with the heat medium inlet of the air heating device;
the desorption gas discharge pipeline is communicated with the mixed connecting pipe through a flame arrester; an exhaust valve is arranged on the desorption gas discharge pipeline.
6. An adsorbent desorption regeneration system as set forth in claim 5 wherein: the waste heat heating device is a heat exchanger; a heat medium inlet of the waste heat heating device is communicated with a heat medium outlet of the air heating device;
the hot medium outlet of the waste heat heating device is communicated with the incineration fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958156.0U CN217248977U (en) | 2022-04-20 | 2022-04-20 | Adsorbent desorption regeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958156.0U CN217248977U (en) | 2022-04-20 | 2022-04-20 | Adsorbent desorption regeneration system |
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| Publication Number | Publication Date |
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| CN217248977U true CN217248977U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220958156.0U Active CN217248977U (en) | 2022-04-20 | 2022-04-20 | Adsorbent desorption regeneration system |
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| CN (1) | CN217248977U (en) |
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- 2022-04-20 CN CN202220958156.0U patent/CN217248977U/en active Active
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