CN220090925U - Tail gas treatment device is used in stevioside production - Google Patents
Tail gas treatment device is used in stevioside production Download PDFInfo
- Publication number
- CN220090925U CN220090925U CN202321651930.4U CN202321651930U CN220090925U CN 220090925 U CN220090925 U CN 220090925U CN 202321651930 U CN202321651930 U CN 202321651930U CN 220090925 U CN220090925 U CN 220090925U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- tail gas
- outlet
- regulating valve
- ethanol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- UEDUENGHJMELGK-HYDKPPNVSA-N Stevioside Chemical compound O([C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@]12C(=C)C[C@@]3(C1)CC[C@@H]1[C@@](C)(CCC[C@]1([C@@H]3CC2)C)C(=O)O[C@H]1[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O1)O)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O UEDUENGHJMELGK-HYDKPPNVSA-N 0.000 title claims abstract description 23
- 229940013618 stevioside Drugs 0.000 title claims abstract description 23
- OHHNJQXIOPOJSC-UHFFFAOYSA-N stevioside Natural products CC1(CCCC2(C)C3(C)CCC4(CC3(CCC12C)CC4=C)OC5OC(CO)C(O)C(O)C5OC6OC(CO)C(O)C(O)C6O)C(=O)OC7OC(CO)C(O)C(O)C7O OHHNJQXIOPOJSC-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 235000019202 steviosides Nutrition 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002904 solvent Substances 0.000 claims abstract description 35
- 238000011084 recovery Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007791 liquid phase Substances 0.000 claims abstract description 11
- 239000012071 phase Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 51
- 239000000498 cooling water Substances 0.000 claims description 33
- 238000005406 washing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 108
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 244000228451 Stevia rebaudiana Species 0.000 description 2
- 235000006092 Stevia rebaudiana Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000208838 Asteraceae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000021096 natural sweeteners Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a tail gas treatment device for stevioside production, which relates to the technical field of tail gas treatment devices, wherein tail gas containing ethanol is pumped to a plate heat exchanger from a tail gas inlet pipeline through a vacuum system, is cooled to about 70 ℃ through the plate heat exchanger and then enters an evaporator, is cooled to about 50 ℃ again through heat exchange of a cold water machine, noncondensable gas is discharged from a gas phase outlet of the evaporator, and condensed ethanol enters a solvent recovery storage tank from a liquid phase outlet of the evaporator, so that recovery of ethanol solvent is realized, the purity of the recovered ethanol is above 70%, the recovered ethanol can be directly used for stevioside reproduction, the purification cost is saved, the amount of residual ethanol in the noncondensable gas after secondary condensation is small, the tail gas treatment effect is good, and the national specified emission standard is reached.
Description
Technical Field
The utility model relates to the technical field of tail gas treatment devices, in particular to a tail gas treatment device for stevioside production.
Background
Stevioside is a novel natural sweetener extracted from stevia rebaudiana Bertoni (or stevia rebaudiana bertoni leaf), a herbal plant of the family Compositae.
The extraction of stevioside mostly adopts ethanol as a solvent, a large amount of ethanol is contained in tail gas generated in the later purification process, the tail gas is led into a spray tower for recycling the ethanol by water at present in conventional operation, but the recycled ethanol has low purity and cannot be directly used for production, and meanwhile, the tail gas has higher residual temperature after treatment and poorer treatment effect.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: aiming at the defects existing in the prior art, the tail gas treatment device for stevioside production is provided, the tail gas treatment effect is good, and the purity of the obtained ethanol is high.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the tail gas treatment device for stevioside production comprises a vacuum system communicated with a tail gas inlet pipeline, wherein an outlet of the vacuum system is communicated with a plate heat exchanger through a pipeline, an outlet of the plate heat exchanger is communicated with an evaporator through a pipeline, the evaporator is communicated with a cold water machine through a pipeline, and a lower end liquid phase outlet of the evaporator is communicated with a solvent recovery storage tank through a pipeline;
the inlet and outlet of the plate heat exchanger and the water chiller are respectively communicated with a cooling water return pipeline and a cooling water inlet pipeline.
As an improved technical scheme, a gas phase outlet of the evaporator is communicated with a lower end inlet of a noncondensable gas washing tower through a pipeline, the solvent recovery storage tank is communicated to an upper end inlet of the noncondensable gas washing tower through a circulating pump, and a lower outlet of the noncondensable gas washing tower is communicated to the solvent recovery storage tank through a pipeline.
As an improved technical scheme, the outlet of the circulating pump is provided with a condenser, and the inlet and outlet of the condenser are respectively communicated with the cooling water return pipeline and the cooling water inlet pipeline.
As an improved technical scheme, the outlet of the circulating pump is communicated to the solvent recovery storage tank through a pipeline.
As an improved technical scheme, a first regulating valve and a first flow sensor are arranged on an outlet pipeline of the circulating pump, and the first regulating valve and the first flow sensor are interlocked to a control system.
As an improved technical scheme, a sand filter layer is arranged in the noncondensable gas washing tower.
As the preferable technical scheme, a second regulating valve is arranged on a cooling water inlet pipeline of the condenser, a first temperature sensor is arranged on a material outlet pipeline of the condenser, and the second regulating valve and the first temperature sensor are interlocked to a control system.
As an optimized technical scheme, a third regulating valve is arranged on a cooling water inlet pipeline of the water chiller, a second temperature sensor is arranged on a lower liquid phase outlet pipeline of the evaporator, and the third regulating valve and the second temperature sensor are interlocked to a control system.
As an optimized technical scheme, a fourth regulating valve is arranged on a cooling water inlet pipeline of the plate heat exchanger, a third temperature sensor is arranged on a material outlet pipeline of the plate heat exchanger, and the fourth regulating valve and the third temperature sensor are interlocked to a control system.
As the preferable technical scheme, a fifth regulating valve is arranged on the tail gas inlet pipeline, a second flow sensor is arranged on the outlet pipeline of the vacuum system, and the fifth regulating valve and the second flow sensor are interlocked to the control system.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that:
the utility model relates to a tail gas treatment device for stevioside production, which comprises a vacuum system communicated with a tail gas inlet pipeline, wherein an outlet of the vacuum system is communicated with a plate heat exchanger through a pipeline, an outlet of the plate heat exchanger is communicated with an evaporator through a pipeline, the evaporator is communicated with a cold water machine through a pipeline, and a lower liquid phase outlet of the evaporator is communicated with a solvent recovery storage tank through a pipeline; the inlet and outlet of the plate heat exchanger and the water chiller are respectively communicated with a cooling water return pipeline and a cooling water inlet pipeline. The tail gas containing ethanol is pumped to the plate heat exchanger from the tail gas inlet pipeline through the vacuum system, is cooled to about 70 ℃ through the plate heat exchanger and then enters the evaporator, is cooled to about 50 ℃ again through heat exchange of the cold water machine, noncondensable gas is discharged from a gas phase outlet of the evaporator, and condensed ethanol enters the solvent recovery storage tank from a liquid phase outlet of the evaporator, so that recovery of ethanol solvent is realized, the purity of the recovered ethanol is more than 70%, the recovered ethanol can be directly used for stevioside reproduction, the purification cost is saved, the residual ethanol amount in noncondensable gas after secondary condensation is small, the tail gas treatment effect is good, and the national specified emission standard is reached.
The gas phase outlet of the evaporator is communicated with the lower end inlet of the noncondensable gas washing tower through a pipeline, the solvent recovery storage tank is communicated with the upper end inlet of the noncondensable gas washing tower through a circulating pump, and the lower outlet of the noncondensable gas washing tower is communicated with the solvent recovery storage tank through a pipeline. The solvent in the solvent recovery storage tank is conveyed to the upper end inlet of the noncondensable gas washing tower through the circulating pump, a small amount of residual ethanol in the noncondensable gas is absorbed again, waste of raw materials is avoided, and meanwhile, the discharged noncondensable gas is better in treatment effect and environment-friendly.
The outlet of the circulating pump is provided with a condenser, and the inlet and outlet of the condenser are respectively communicated with the cooling water return pipeline and the cooling water inlet pipeline. Through cooling the ethanol that the circulating pump flows out, the absorption effect of low temperature ethanol to residual ethanol in the noncondensable gas is better, the export of circulating pump pass through the pipeline intercommunication extremely solvent recovery storage tank, through cooling the ethanol, it is volatilized to reduce that the ethanol is heated, and the ethanol is more stable in solvent recovery storage tank.
And a first regulating valve and a first flow sensor are arranged on an outlet pipeline of the circulating pump and are interlocked to a control system. The control system adjusts the opening of the first regulating valve according to the value of the first flow sensor so as to keep the flow of the ethanol entering the noncondensable gas washing tower stable.
The inside of noncondensable gas scrubbing tower is equipped with the grit filter layer, and the grit filter layer can carry out the filtration to the ethanol that gets into noncondensable gas scrubbing tower and remove impurity, makes the ethanol purity in the solvent recovery storage tank higher at last, and impurity reduces.
The cooling water inlet pipeline of the condenser is provided with a second regulating valve, the material outlet pipeline of the condenser is provided with a first temperature sensor, and the second regulating valve and the first temperature sensor are interlocked to a control system. The control system adjusts the flow of the cooling water entering the condenser according to the first temperature sensor, so that the temperature of the ethanol in the solvent recovery storage tank is maintained in a constant range, and meanwhile, the consumption of energy sources can be reduced, and the cost is saved.
The cooling water inlet pipeline of the water chiller is provided with a third regulating valve, the lower liquid phase outlet pipeline of the evaporator is provided with a second temperature sensor, and the third regulating valve and the second temperature sensor are interlocked to a control system. The control system adjusts the opening of the third regulating valve according to the value of the second temperature sensor, so that the temperature of the ethanol after secondary condensation is maintained at about 50 ℃, and meanwhile, the consumption of energy sources can be reduced, and the cost is saved.
The cooling water inlet pipeline of the plate heat exchanger is provided with a fourth regulating valve, the material outlet pipeline of the plate heat exchanger is provided with a third temperature sensor, and the fourth regulating valve and the third temperature sensor are interlocked to a control system. The control system adjusts the opening of the fourth regulating valve according to the numerical value of the third temperature sensor, so that the temperature of the ethanol of the plate-type heat exchanger is maintained at about 70 ℃, and meanwhile, the consumption of energy sources can be reduced, and the cost is saved.
And a fifth regulating valve is arranged on the tail gas inlet pipeline, a second flow sensor is arranged on the outlet pipeline of the vacuum system, and the fifth regulating valve and the second flow sensor are interlocked to the control system. The control system adjusts the opening of the fifth regulating valve according to the value of the second flow sensor, so that the flow of the tail gas entering the vacuum system is maintained in a constant range, and the good tail gas treatment effect is ensured.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an enlarged view at A in FIG. 1;
wherein: 1. a tail gas inlet pipe; 2. a vacuum system; 3. a plate heat exchanger; 4. an evaporator; 5. a water chiller; 6. a solvent recovery storage tank; 7. a cooling water return line; 8. a cooling water inlet pipe; 9. a noncondensable gas washing tower; 10. a circulation pump; 11. a condenser; 12. a first regulating valve; 13. a first flow sensor; 14. a sand filter layer; 15. a second regulating valve; 16. a first temperature sensor; 17. a third regulating valve; 18. a second temperature sensor; 19. a fourth regulating valve; 20. a third temperature sensor; 21. a fifth regulating valve; 22. a second flow sensor; 23. a buffer tank; 24. a compressor; 25. a tube array; 26. a feed pipe; 27. and a through hole.
Detailed Description
The utility model is further illustrated in the following, in conjunction with the accompanying drawings and examples.
As shown in fig. 1 and 2, a tail gas treatment device for stevioside production comprises a vacuum system 2 communicated with a tail gas inlet pipeline 1, wherein an outlet of the vacuum system 2 is communicated with a plate heat exchanger 3 through a pipeline, the vacuum system in the embodiment comprises two vacuum pumps which are arranged in parallel, a buffer tank 23 is arranged at the front end of each vacuum pump, tail gas can be temporarily stored and decompressed in the buffer tank 23 to avoid directly impacting the vacuum pumps, an outlet of the plate heat exchanger 3 is communicated with an evaporator 4 through a pipeline, the evaporator 4 is communicated with a cold water machine 5 through a pipeline, and a liquid phase outlet at the lower end of the evaporator 4 is communicated with a solvent recovery storage tank 6 through a pipeline; the inlet and outlet of the plate heat exchanger 3 and the water chiller 5 are respectively communicated with a cooling water return pipeline 7 and a cooling water inlet pipeline 8, and cooling water enters the water chiller 5 and enters the tube array 25 in the evaporator 4 again after being cooled by the compressor 24. The tail gas containing ethanol is pumped to the plate heat exchanger 3 from the tail gas inlet pipeline 1 through the vacuum system 2, a small amount of mixed gas of liquid ethanol, gaseous ethanol and noncondensable gas is obtained after the temperature is reduced to about 70 ℃ through the plate heat exchanger 3, the liquid ethanol and the mixed gas enter the feed pipe 26 of the evaporator 4, the liquid ethanol flows down through the through hole 27 of the feed pipe 26 and is discharged to the solvent recovery storage tank 6, gaseous ethanol in the mixed gas overflows from the through hole 27 to about 50 ℃ through the heat exchange of the tube 25, is condensed into liquid and flows down, the noncondensable gas overflows from the through hole 27 and is discharged from the gas phase outlet of the evaporator 4, the condensed ethanol enters the solvent recovery storage tank 6 from the liquid phase outlet of the evaporator 4, the recovery of ethanol solvent is realized, the purity of the recovered ethanol is above 70%, the ethanol can be directly used for stevioside reproduction, the purification cost is saved, the residual ethanol amount in the noncondensable gas after secondary condensation is less, the treatment effect is good, and the national specified emission standard is reached.
The gas phase outlet of the evaporator 4 is communicated with the lower end inlet of a noncondensable gas washing tower 9 through a pipeline, the solvent recovery storage tank 6 is communicated with the upper end inlet of the noncondensable gas washing tower 9 through a circulating pump 10, and the lower outlet of the noncondensable gas washing tower 9 is communicated with the solvent recovery storage tank 6 through a pipeline. The solvent in the solvent recovery storage tank 6 is conveyed to the upper end inlet of the noncondensable gas washing tower 9 through the circulating pump 10, a small amount of residual ethanol in the noncondensable gas is absorbed again, the waste of raw materials is avoided, and meanwhile, the discharged noncondensable gas is better in treatment effect and is environment-friendly.
The outlet of the circulating pump 10 is provided with a condenser 11, and the inlet and outlet of the condenser 11 are respectively communicated with the cooling water return pipeline 7 and the cooling water inlet pipeline 8. Through cooling the ethanol that circulating pump 10 flows out, the absorption effect of low temperature ethanol to residual ethanol in the noncondensable gas is better, the export of circulating pump 10 is through the pipeline intercommunication extremely solvent recovery storage tank 6, through cooling the ethanol, reduces the ethanol and is heated and volatilizes, and the ethanol is more stable in solvent recovery storage tank 6.
The outlet pipe of the circulation pump 10 is provided with a first regulating valve 12 and a first flow sensor 13, and the first regulating valve 12 and the first flow sensor 13 are interlocked to a control system. The control system adjusts the opening of the first regulating valve 12 according to the value of the first flow sensor 13, so that the flow of the ethanol entering the noncondensable gas washing tower 9 is kept stable.
The inside of noncondensable gas washing tower 9 is equipped with grit filter layer 14, and grit filter layer 14 can carry out the filtration impurity to the ethanol that gets into noncondensable gas washing tower 9, makes the ethanol purity in the solvent recovery storage tank 6 higher finally, and the impurity reduces.
A second regulating valve 15 is arranged on a cooling water inlet pipeline of the condenser 11, a first temperature sensor 16 is arranged on a material outlet pipeline of the condenser 11, and the second regulating valve 15 and the first temperature sensor 16 are interlocked to a control system. The control system adjusts the flow of the cooling water entering the condenser 11 according to the first temperature sensor 16, so that the temperature of the ethanol in the solvent recovery storage tank 6 is maintained in a constant range, and meanwhile, the consumption of energy sources can be reduced, and the cost is saved.
A third regulating valve 17 is arranged on a cooling water inlet pipeline of the water chiller 5, a second temperature sensor 18 is arranged on a liquid phase outlet pipeline at the lower end of the evaporator 4, and the third regulating valve 17 and the second temperature sensor 18 are interlocked to a control system. The control system adjusts the opening of the third regulating valve 17 according to the value of the second temperature sensor 18, so that the temperature of the ethanol after secondary condensation is maintained at about 50 ℃, and meanwhile, the energy consumption can be reduced, and the cost is saved.
A fourth regulating valve 19 is arranged on the cooling water inlet pipeline of the plate heat exchanger 3, a third temperature sensor 20 is arranged on the material outlet pipeline of the plate heat exchanger 3, and the fourth regulating valve 19 and the third temperature sensor 20 are interlocked to a control system. The control system adjusts the opening of the fourth regulating valve 19 according to the numerical value of the third temperature sensor 20, so that the temperature of the ethanol discharged from the plate heat exchanger 3 is maintained at about 70 ℃, and meanwhile, the energy consumption can be reduced, and the cost is saved.
A fifth regulating valve 21 is arranged on the tail gas inlet pipeline 1, a second flow sensor 22 is arranged on the outlet pipeline of the vacuum system 2, and the fifth regulating valve 21 and the second flow sensor 22 are interlocked to a control system. The control system adjusts the opening of the fifth regulating valve 21 according to the value of the second flow sensor 22, so that the flow of the tail gas entering the vacuum system 2 is maintained in a constant range, and the good tail gas treatment effect is ensured.
It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the utility model as defined in the appended claims.
Claims (10)
1. A tail gas treatment device for stevioside production is characterized in that: the device comprises a vacuum system communicated with a tail gas inlet pipeline, wherein an outlet of the vacuum system is communicated with a plate heat exchanger through a pipeline, an outlet of the plate heat exchanger is communicated with an evaporator through a pipeline, the evaporator is communicated with a water chiller through a pipeline, and a liquid phase outlet at the lower end of the evaporator is communicated with a solvent recovery storage tank through a pipeline;
the inlet and outlet of the plate heat exchanger and the water chiller are respectively communicated with a cooling water return pipeline and a cooling water inlet pipeline.
2. The tail gas treatment device for stevioside production according to claim 1, wherein: the gas phase outlet of the evaporator is communicated with the lower end inlet of the noncondensable gas washing tower through a pipeline, the solvent recovery storage tank is communicated to the upper end inlet of the noncondensable gas washing tower through a circulating pump, and the lower outlet of the noncondensable gas washing tower is communicated to the solvent recovery storage tank through a pipeline.
3. The tail gas treatment device for stevioside production according to claim 2, wherein: the outlet of the circulating pump is provided with a condenser, and the inlet and outlet of the condenser are respectively communicated with the cooling water return pipeline and the cooling water inlet pipeline.
4. A tail gas treatment device for stevioside production as claimed in claim 3, wherein: and the outlet of the circulating pump is communicated to the solvent recovery storage tank through a pipeline.
5. The tail gas treatment device for stevioside production according to claim 2, wherein: and a first regulating valve and a first flow sensor are arranged on an outlet pipeline of the circulating pump and are interlocked to a control system.
6. The tail gas treatment device for stevioside production according to claim 2, wherein: and a sand filtering layer is arranged in the noncondensable gas washing tower.
7. The tail gas treatment device for stevioside production according to claim 4, wherein: the cooling water inlet pipeline of the condenser is provided with a second regulating valve, the material outlet pipeline of the condenser is provided with a first temperature sensor, and the second regulating valve and the first temperature sensor are interlocked to a control system.
8. The tail gas treatment device for stevioside production according to claim 1, wherein: the cooling water inlet pipeline of the water chiller is provided with a third regulating valve, the lower liquid phase outlet pipeline of the evaporator is provided with a second temperature sensor, and the third regulating valve and the second temperature sensor are interlocked to a control system.
9. The tail gas treatment device for stevioside production according to claim 1, wherein: the cooling water inlet pipeline of the plate heat exchanger is provided with a fourth regulating valve, the material outlet pipeline of the plate heat exchanger is provided with a third temperature sensor, and the fourth regulating valve and the third temperature sensor are interlocked to a control system.
10. The tail gas treatment device for stevioside production according to claim 1, wherein: and a fifth regulating valve is arranged on the tail gas inlet pipeline, a second flow sensor is arranged on the outlet pipeline of the vacuum system, and the fifth regulating valve and the second flow sensor are interlocked to the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321651930.4U CN220090925U (en) | 2023-06-27 | 2023-06-27 | Tail gas treatment device is used in stevioside production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321651930.4U CN220090925U (en) | 2023-06-27 | 2023-06-27 | Tail gas treatment device is used in stevioside production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220090925U true CN220090925U (en) | 2023-11-28 |
Family
ID=88882048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321651930.4U Active CN220090925U (en) | 2023-06-27 | 2023-06-27 | Tail gas treatment device is used in stevioside production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220090925U (en) |
-
2023
- 2023-06-27 CN CN202321651930.4U patent/CN220090925U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201737726U (en) | Solar seawater-desalinating device adopting passive flash evaporation technique | |
| US11353242B2 (en) | Semi-open high-temperature heat pump system and working method thereof | |
| WO2021213552A1 (en) | Multi-column differential pressure energy-saving anhydrous alcohol distillation system and anhydrous alcohol energy-saving production method | |
| CN102107119B (en) | Multiple-effect membrane distillation device and method | |
| CN110723756A (en) | New process and device for preparing ferrous sulfate heptahydrate by continuous vacuum crystallization of titanium liquid | |
| CN105056565A (en) | Device and method for evaporation and crystallization of sodium gluconate solution | |
| CN220090925U (en) | Tail gas treatment device is used in stevioside production | |
| CN213232192U (en) | Wine brewing cooling circulation system with waste heat grading recovery function | |
| CN210419611U (en) | Ammonium sulfate waste water MVR evaporation deamination processing system | |
| CN216378008U (en) | System for producing low-residual alcohol monoalkyl fatty tertiary amine | |
| CN103185362A (en) | Low-position straight heating machine | |
| CN101935078B (en) | Sea water desalination device and method | |
| CN1049460A (en) | Utilize the method for last evaporator indirect steam preheating vaporizing raw liquor | |
| CN212532809U (en) | Pre-concentration device of urea low-pressure system | |
| CN211198664U (en) | Skid-mounted solar seawater desalination device | |
| CN113198193A (en) | Sodium hyaluronate low-temperature concentration extraction system and method | |
| CN210314061U (en) | Rectification and purification device for synthesizing dimethyl oxalate by carbonylation of coal-made ethylene glycol | |
| CN205917031U (en) | Phosphoric acid refrigeration cycle water vacuum device | |
| CN105110399B (en) | A kind of Trans-critical cycle air-conditioning and flat flow desalinization co-generation system | |
| CN215310246U (en) | Sodium hyaluronate cryoconcentration extraction system | |
| CN218740270U (en) | Energy-saving weak liquor distillation device | |
| CN220182855U (en) | Hydrogen production device by waste water | |
| CN213285699U (en) | Evaporation concentration device of cellulose solvent NMMO aqueous solution | |
| CN217676881U (en) | Two-stage heat pump vacuum evaporation sewage concentration system | |
| CN220736235U (en) | Evaporation system with wet vacuum suction device for urea production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |