CN220159253U - Device for continuously recycling ethanol from special chemical energy-containing waste liquid - Google Patents
Device for continuously recycling ethanol from special chemical energy-containing waste liquid Download PDFInfo
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- CN220159253U CN220159253U CN202321547087.5U CN202321547087U CN220159253U CN 220159253 U CN220159253 U CN 220159253U CN 202321547087 U CN202321547087 U CN 202321547087U CN 220159253 U CN220159253 U CN 220159253U
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title abstract description 6
- 238000003860 storage Methods 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 238000010992 reflux Methods 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 51
- 239000000523 sample Substances 0.000 claims description 34
- 239000012071 phase Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000007791 liquid phase Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000011084 recovery Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 239000002351 wastewater Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a device for continuously recycling ethanol from energy-containing waste liquid in special chemical industry. The device is equipped with raw materials respectively and advances pipe and nitrogen gas and advance the pipe at the top of raw materials storage tank, raw materials storage tank is linked together with delivery pump, pre-heater, rectifying column with pipeline and reboiler, raffinate slag drum are connected, rectifying column is linked together with first-level condenser with pipeline, second-level condenser, reflux drum, product storage tank is linked together with the delivery pump with the pipeline, the delivery pump is linked together with back flow and product output pipe respectively, the export of delivery pump divide into two way one and the delivery pipe is linked together, two and back flow are linked together, the tip is linked together with the upper portion of rectifying column. The device changes the internal circulation of the tower for recovering ethanol into the external circulation of the tower, so that the recovery operation can be continuously carried out when the ethanol is recovered, the process route is simple, the production operation is stable and controllable, the automation degree is high, the energy is saved, the production cost is low, and the working efficiency is high.
Description
Technical Field
The utility model relates to the technical field of chemical equipment and wastewater treatment, in particular to a device for continuously recovering ethanol from special chemical energy-containing waste liquid.
Background
Ethanol is an important chemical raw material solvent, and the waste water discharged from the special chemical energetic material contains more ethanol, so that if the waste water containing ethanol is directly discharged, the environment is greatly polluted, and meanwhile, the ethanol raw material is greatly wasted, so that the ethanol in the waste water can be recovered by chemical enterprises. In the prior art, ethanol is generally recovered by adopting a tower internal circulation operation mode of a packed tower and a sieve plate tower, and the operation is a batch rectification mode, and the recovery mode has the following defects: 1. the ethanol recovery operation cannot be continuously carried out, and when the temperature is at normal temperature (shutdown), the waste liquid can block equipment and pipelines, so that the safety accidents such as restarting or explosion are influenced; 2. ethanol and sundries in the waste liquid are easy to form a bonding object in a pipeline, so that the cleaning is difficult and frequent; 3. because the ethanol in the waste liquid contains more impurities, the recovery rate of the ethanol is lower, generally 50-60%; 4. when the internal circulation of the tower is adopted, the recovery operation cannot be continuously carried out, the production is unstable, and the operable range is small. Because of the special production process of the special chemical energetic material and the limitation of the used equipment, a device capable of continuously recovering ethanol in the waste liquid is urgently needed to be designed.
Disclosure of Invention
The utility model aims to provide a device for continuously recovering ethanol from energy-containing waste liquid in special chemical industry. The technical problems to be solved by the utility model are as follows: the equipment and the pipeline in the prior art are optimally combined, the cooling circulation in the tower for recovering the ethanol is changed into the cooling of adopting a two-stage condenser arranged outside the tower, and the technical problems that when the ethanol is recovered from the energy-containing waste liquid, continuous production cannot be realized, the ethanol and impurities in the waste liquid are easy to form a binder in the pipeline, the cleaning is difficult and frequent, the recovery rate of the ethanol is lower and the like are solved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an apparatus for continuously recovering ethanol from an energy-containing waste liquid in special chemical industry, comprising: the device is characterized in that a raw material inlet pipe and a nitrogen inlet pipe are respectively arranged at the top of the raw material storage tank, the bottom of the raw material storage tank is communicated with an inlet of the delivery pump through a connecting pipeline, an outlet of the delivery pump is communicated with the preheater through a pipeline, a first flowmeter and a first regulating control valve are arranged on the connecting pipeline, a condensed water outlet pipe and a steam inlet pipe are arranged on the preheater, a second regulating control valve is arranged on the steam inlet pipe, a preheater outlet pipe is communicated with the rectifying tower through a preheater, the preheater has a first temperature probe on the outlet pipe, a liquid level probe and a second temperature probe on the lower part of the rectifying tower, a rectifying liquid phase pipe on the bottom connected with the reboiler, a pipeline connected with the residual slag barrel, a fifth regulating control valve on the connecting pipeline, a condensed water outlet pipe and a steam inlet pipe on the reboiler, a second regulating control valve on the steam inlet pipe, a reboiling gas phase pipe connected with the rectifying tower, a rectifying gas phase pipe connected with the first condenser on the top of the rectifying tower, a condensing gas phase pipe connected with the second condenser, cooling water outlet pipe and cooling water inlet pipe on the first condenser and the second condenser, an exhaust pipe on the second condenser, a pipeline connected with the reflux tank, a pipeline connected with the condensate pipe between the first condenser and the reflux tank, a product storage tank connected with the condensate pipe, the product tank connecting pipe for the product storage tank is communicated with the inlet of the product conveying pump, and the outlet of the product conveying pump is respectively communicated with the return pipe and the product output pipe.
The outlet of the product delivery pump in the device is divided into two paths, one path is communicated with a product output pipe, a fourth adjusting control valve and a second flowmeter are arranged on the product output pipe, the second path is communicated with a return pipe, a third flowmeter and a third adjusting control valve are arranged on the return pipe, and the end part of the return pipe is communicated with the upper part of the rectifying tower.
The device comprises a first flowmeter, a first regulating control valve, a second regulating control valve, a first temperature probe, a third regulating control valve, a fourth regulating control valve, a second flowmeter, a product conveying pump, a third flowmeter, a fifth regulating control valve, a liquid level probe and a second temperature probe which are respectively connected with a control unit in a control room through wires.
The preheater, the condenser, the reboiler, the delivery pump, the product delivery pump, the raw material storage tank, the reflux tank, the product storage tank and the residual slag barrel in the device are chemical unit equipment in the prior art, the temperature probe, the liquid level probe, each adjusting control valve and the flowmeter are all monitoring, valve and metering components commonly used in chemical units in the prior art, and the rectifying tower is special ethanol recovery equipment.
Compared with the prior art, the utility model has the following positive effects:
1. the device optimizes and combines equipment and pipelines in the prior art, changes the cooling circulation in the tower for recovering ethanol into the external circulation of the tower with a two-stage condenser arranged outside the tower, and can continuously perform recovery operation when recovering ethanol from the energy-containing waste liquid;
2. the device organically combines a special rectifying tower with a preheater, a reboiler, a condenser, a conveying pump, a product conveying pump and a pipeline, so that the recovery rate of recovered ethanol is improved to more than 85%, and the concentration of the recovered ethanol reaches 95 (wt%;
3. the device monitors the temperature and the liquid level in the rectifying tower and the pipeline through different temperature detection liquid level probes, and ensures that the temperature in the rectifying tower and the pipeline is within a process set value;
4. in the production process of the device, the ethanol and impurities in the waste liquid can not form an adhesive in the pipeline, so that the blockage of a system is not easy to occur, the cleaning times of the pipeline of the system are reduced, the frequent cleaning problem is solved, and safety accidents such as burst, explosion and the like caused by the blockage of the pipeline are avoided;
5. the energy-containing waste liquid is treated by the device, so that the amount of the generated waste water and waste residue is very small, and the waste water and waste residue can be concentrated for treatment after collection, so that the environment is not polluted;
6. the device has the advantages of simple process route, stable and controllable production and operation, high operation elasticity and high automation degree, and simultaneously saves energy;
7. the device has low investment cost, reduces the production cost, improves the working efficiency, reduces the labor intensity of workers and has great market competitiveness.
Drawings
The drawings that are required to be used in the embodiments for more clearly explaining the technology of the present utility model are briefly described. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person of ordinary skill in the art.
The drawings described in the present specification are only for the purpose of combining the disclosure of the present specification, and are not intended to limit the applicable limitations of the present utility model, but are intended to cover any modifications of the structure, the changes of the ratio, or the adjustment of the size of the present utility model, without affecting the efficacy and achievement of the present utility model.
FIG. 1 is a schematic structural diagram of a device for continuously recovering ethanol from energy-containing waste liquid;
FIG. 2, schematic diagram of the connection of the transfer pump, product transfer pump, temperature probe, liquid level probe, flow meter, regulating control valve and control chamber.
In the figure: 1. the raw material storage tank, 2, raw material inlet pipe, 3, nitrogen inlet pipe, 4, a first flowmeter, 5, a first regulating control valve, 6, a condensed water outlet pipe, 7, a steam inlet pipe, 8, a second regulating control valve, 9, a preheater, 10, a first temperature probe, 11, a preheater outlet pipe, 12, a rectifying tower, 13, a return pipe, 14, a third regulating control valve, 15, a rectifying gas phase pipe, 16, a first condenser, 17, a condensed gas phase pipe, 18, a second condenser, 19, an exhaust pipe, 20, a cooling water outlet pipe, 21, a cooling water inlet pipe, 22, a reflux tank, 23, a condensate pipe, 24, a product outlet pipe, 25, a product storage tank, 26, a fourth regulating control valve, 27, a second flowmeter, 28, a product tank connecting pipe, 29, a product delivery pump, 30, a third flowmeter, 31, a residue barrel, 32, a fifth regulating control valve, 33, a liquid level probe, 34, a second temperature probe, 35, a rectifying liquid phase pipe, 36, 37, a reboiling gas phase pipe, 38, a delivery pump, 39 and a control chamber.
The direction indicated by the arrow in fig. 1 is the flow direction of the gas phase and the liquid phase in the pipeline.
Detailed Description
The technical scheme of the utility model is further clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1-2, the connection of equipment and pipelines and the input of process parameters in the device are that the process parameters set by the first flowmeter 4, the first regulating control valve 5, the second regulating control valve 8, the first temperature probe 10, the third regulating control valve 14, the fourth regulating control valve 26, the second flowmeter 27, the product conveying pump 29, the third flowmeter 30, the fifth regulating control valve 32, the liquid level probe 33 and the second temperature probe 34 are respectively input into a control unit of a control room (39).
The raw material inlet pipe 2 and the nitrogen inlet pipe 3 are respectively arranged at the top of the raw material storage tank 1, the bottom of the raw material storage tank 1 is communicated with the inlet of the delivery pump 38 by pipelines, the outlet of the delivery pump 38 is communicated with the preheater 9 by pipelines, the first flowmeter 4 and the first regulating control valve 5 are arranged on connecting pipelines, the condensed water outlet pipe 6 and the steam inlet pipe 7 are respectively arranged on the preheater 9 and the reboiler 36, and the second regulating control valve 8 is arranged on the steam inlet pipe 7. The preheater 9 is connected to the rectifying column 12 via a preheater outlet 11, and a first temperature probe 10 is mounted on the preheater outlet 11. The liquid level probe 33 and the second temperature probe 34 are arranged at the lower part of the rectifying tower 12, the rectifying liquid phase pipe 35 is arranged at the bottom of the rectifying tower 12, the rectifying liquid phase pipe 35 is communicated with the reboiler 36, the reboiler is communicated with the rectifying tower 12 by a reboiling gas phase pipe 37, and is communicated with the rectifying liquid phase pipe 35 and the residual slag barrel 31 by pipelines, and the fifth regulating control valve 32 is arranged on a connecting pipeline. The rectifying gas phase pipe 15 is arranged at the top of the rectifying tower 12, the rectifying gas phase pipe 15 is communicated with the primary condenser 16, the primary condenser 16 and the secondary condenser 18 are communicated by the condensing gas phase pipe 17, the cooling water outlet pipe 20 and the cooling water inlet pipe 21 are respectively arranged on the primary condenser 16 and the secondary condenser 18, and the exhaust pipe 19 is arranged on the secondary condenser 18. The secondary condenser 18 is connected with the reflux drum 22 by a pipeline, the primary condenser 16 and the reflux drum 22 are connected with a condensate pipe 23 by a pipeline, the end part of the condensate pipe 23 is connected with a product storage tank 25, the product storage tank 25 is connected with the inlet of a product delivery pump 19 by a product tank connecting pipe 28, and the outlet of the product delivery pump 29 is respectively connected with the reflux pipe 13 and the product output pipe 24.
The outlet of the product delivery pump 29 in the device is divided into two paths of output, one path of output is communicated with the product output pipe 24, a fourth regulating control valve 26 and a second flowmeter 27 are arranged on the product output pipe 24, the second path of output is communicated with the return pipe 13, a third flowmeter 30 and a third regulating control valve 14 are arranged on the return pipe 13, and the end part of the return pipe 13 is communicated with the upper part of the rectifying tower 12.
When in use, raw materials are conveyed into the raw material storage tank 1 through the raw material inlet pipe 2, and nitrogen is input into the raw material storage tank 1 through the nitrogen input pipe 3 to seal the raw materials in the raw material storage tank 1. An operator opens the first regulating control valve 5, the second regulating control valve 8, the third regulating control valve 14, the fourth regulating control valve and the fifth regulating control valve 32 in the control room 39 through a control unit, simultaneously opens the conveying pump 38, pumps raw materials into the preheater 9 through a pipeline, steam enters the preheater 9 through the steam inlet pipe 7 to heat the raw materials, monitors the temperature in the preheater outlet pipe 11 through the first temperature probe 10, adjusts the opening degree of the second regulating control valve 8 through the control unit according to the fed-back temperature parameter, and the condensed water is discharged and conveyed to the condensed water recovery system through the condensed water outlet pipe 6 for recycling. The heated raw material liquid is conveyed to the rectifying tower 12 for treatment through the preheater outlet pipe 11, the liquid formed in the rectifying tower 12 is collected at the bottom of the rectifying tower 12, most of the liquid is conveyed to the reboiler 36 through the rectifying liquid phase pipe 35, and the other part of the liquid is conveyed to the residual slag barrel 31 for further treatment through the pipeline and the fifth regulating control valve 32. The steam enters a reboiler 36 through a steam inlet pipe 7 to heat liquid, the temperature in the rectifying tower 12 is monitored through a second temperature probe 34, the opening degree of a second regulating control valve 8 is regulated by a control unit according to the fed-back temperature parameter, and condensed water is discharged through a condensed water outlet pipe 6 and conveyed to a condensed water recovery system for recycling. The heated liquid enters the rectifying column 12 through a reboiler gas phase pipe 37. The heated gas enters the primary condenser 16 through the rectification gas phase pipe 15, cooling water enters the primary condenser 16 through the cooling water inlet pipe 21, the entered gas is condensed, and the cooling water is discharged through the cooling water outlet pipe 20 and enters the circulating water system for recycling. The gas phase formed in the primary condenser 16 enters the secondary condenser 18 through the condensed gas phase pipe 17, and the condensation process is exactly the same as that of the primary condenser 16. Condensate formed in the secondary condenser 18 is transported through a pipeline to a reflux tank 22 for storage, and condensate in the primary condenser 16 and the reflux tank 22 is transported through a condensate pipe 23 to a product storage tank 25 for storage. Condensate in the product tank 25 is fed via a product tank connection pipe 28 to the inlet of a product transfer pump 29, and is pumped via the product transfer pump 29 into the return pipe 13 and the product outlet pipe 24. Part of the liquid flows back into the rectifying tower 12 through the return pipe 13 to maintain the balance of the rectifying system, and part of the liquid is taken out as a tower top product and is conveyed to a storage tank through a finished product conveying pipe 24, a second flowmeter 27 and a fourth regulating control valve 26 for storage or use by a user.
After the whole system is stable in operation, when the concentration of ethanol in the liquid phase extraction at the top of the tower reaches 95wt%, an operator closes the third regulating control valve 14 in the control chamber 39 through the control unit, and the ethanol liquid in the return pipe 13 is conveyed to an ethanol user through the finished product conveying pipe 24 for continuous use.
The first temperature probe 10, the second temperature probe 34 and the liquid level probe 33 which are arranged in the system pipeline and the rectifying tower 12 are used for monitoring the temperature and liquid level changes in the system pipeline and the rectifying tower 12, and the first flowmeter 4, the second flowmeter 27 and the third flowmeter 30 are used for monitoring the liquid flow in the system pipeline. The second regulating control valve 8 is used for controlling the steam inlet amount in the steam inlet pipe 7, and the first regulating control valve 5, the third regulating control valve 14, the fourth regulating control valve 24 and the fifth regulating control valve 32 are used for controlling the flow rate and the flow of liquid in a system pipeline.
The above description is only a non-limiting embodiment of the utility model, but numerous examples can be derived, which can be made by a person skilled in the art without departing from the inventive concept and without inventive effort, and which fall within the scope of protection of the utility model.
Claims (3)
1. An apparatus for continuously recovering ethanol from an energy-containing waste liquid in special chemical industry, comprising: raw materials storage tank (1), pre-heater (9), temperature probe (10), rectifying column (12), one-level condenser (16), second grade condenser (18), reflux drum (22), product storage tank (25), product delivery pump (29), raffinate slag drum (31), liquid level probe (33), temperature probe No. two (34), reboiler (36), delivery pump (38), control room (39), flowmeter No. 4 to flowmeter No. three (30), regulating control valve No. 5 to regulating control valve No. five (32) and each connecting line, its characterized in that: the device is characterized in that a raw material inlet pipe (2) and a nitrogen inlet pipe (3) are respectively arranged at the top of a raw material storage tank (1), the bottom of the raw material storage tank (1) is communicated with the inlet of a delivery pump (38) through a connecting pipeline, the outlet of the delivery pump (38) is communicated with a preheater (9) through a pipeline, a first flowmeter (4) and a first regulating control valve (5) are arranged on the connecting pipeline, a condensate water outlet pipe (6) and a steam inlet pipe (7) are arranged on the preheater (9), a second regulating control valve (8) is arranged on the steam inlet pipe (7), the preheater (9) is communicated with a rectifying tower (12) through a preheater outlet pipe (11), a first temperature probe (10) is arranged on the preheater outlet pipe (11), a liquid level probe (33) and a second temperature probe (34) are arranged at the lower part of the rectifying tower (12), a rectifying liquid phase pipe (35) is arranged at the bottom and communicated with a reboiler (36) through a pipeline, a fifth regulating control valve (32) is arranged on the preheater (9) and is simultaneously connected with a slag barrel (31), a reboiler (6) and a steam inlet pipe (7) is communicated with a second rectifying tower (37) through a condensate water inlet pipe (7), the top of the rectifying tower (12) is communicated with a first-stage condenser (16) through a rectifying gas-phase pipe (15), the first-stage condenser (16) is communicated with a second-stage condenser (18) through a condensing gas-phase pipe (17), cooling water outlet pipes (20) and cooling water inlet pipes (21) are arranged on the first-stage condenser (16) and the second-stage condenser (18), an exhaust pipe (19) is arranged on the second-stage condenser (18), the second-stage condenser (18) is communicated with a reflux tank (22) through a pipeline, the first-stage condenser (16) and the reflux tank (22) are communicated with a condensate pipe (23), the condensate pipe (23) is communicated with a product storage tank (25), a product storage tank (25) is communicated with an inlet of a product delivery pump (29) through a product tank connecting pipe (28), and an outlet of the product delivery pump (29) is respectively communicated with a reflux pipe (13) and a product output pipe (24).
2. The apparatus for continuously recovering ethanol from an energy-containing waste liquid in specialty chemical industry according to claim 1, wherein: the outlet of a product delivery pump (29) in the device is divided into two paths of output, one path of output is communicated with a product output pipe (24), a fourth adjusting control valve (26) and a second flowmeter (27) are arranged on the product output pipe (24), the second path of output is communicated with a return pipe (13), a third flowmeter (30) and a third adjusting control valve (14) are arranged on the return pipe (13), and the end part of the output is communicated with the upper part of the rectifying tower (12).
3. The apparatus for continuously recovering ethanol from an energy-containing waste liquid in specialty chemical industry according to claim 1, wherein: a first flowmeter (4), a first regulating control valve (5), a second regulating control valve (8), a first temperature probe (10), a third regulating control valve (14), a fourth regulating control valve (26), a second flowmeter (27), a product conveying pump (29), a third flowmeter (30), a fifth regulating control valve (32), a liquid level probe (33) and a second temperature probe (34) in the device are respectively connected with a control unit in a control room (39) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321547087.5U CN220159253U (en) | 2023-06-16 | 2023-06-16 | Device for continuously recycling ethanol from special chemical energy-containing waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321547087.5U CN220159253U (en) | 2023-06-16 | 2023-06-16 | Device for continuously recycling ethanol from special chemical energy-containing waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220159253U true CN220159253U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321547087.5U Active CN220159253U (en) | 2023-06-16 | 2023-06-16 | Device for continuously recycling ethanol from special chemical energy-containing waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220159253U (en) |
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2023
- 2023-06-16 CN CN202321547087.5U patent/CN220159253U/en active Active
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