CN219058591U - Evaporation device for treating fermentation filtrate - Google Patents
Evaporation device for treating fermentation filtrate Download PDFInfo
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- CN219058591U CN219058591U CN202223239371.4U CN202223239371U CN219058591U CN 219058591 U CN219058591 U CN 219058591U CN 202223239371 U CN202223239371 U CN 202223239371U CN 219058591 U CN219058591 U CN 219058591U
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Abstract
The utility model provides an evaporation device for treating fermentation filtrate, which comprises a fermentation filtrate storage tank, an evaporation separation unit and a condensation structure. The fermentation filtrate storage tank is provided with a feed inlet and a discharge outlet and is used for storing fermentation filtrate; the evaporation separation unit is communicated with the discharge port and is used for separating solids and liquid in the fermentation filtrate, evaporating the liquid in the fermentation filtrate and discharging the separated solids; the condensing structure is communicated with the evaporation separation unit and is used for condensing the water vapor guided out by the evaporation separation unit and guiding out the condensed water for recycling. The utility model provides an evaporation device for treating fermentation filtrate, which aims to solve the problem that the sludge amount in water is increased due to the degradation of organic matters in wastewater by using a micro-electrolysis process and a Fenton process in the prior art.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to an evaporation device for treating fermentation filtrate.
Background
The biological fermentation filtrate is one of the main types of wastewater, and the water quantity is relatively small in terms of water quantity, but the water quality is poor in terms of water quality. The biological fermentation filtrate contains a large amount of organic pollutants and inorganic salts such as chloride ions, sulfate radicals, calcium and magnesium ions and the like. The prior treatment process of enterprises for fermentation filtrate comprises the steps of pre-treating the fermentation filtrate by advanced oxidation, mixing the fermentation filtrate with low-concentration wastewater in a factory, and carrying out biochemical treatment and advanced oxidation, wherein the treatment meets the standard and is discharged or deeply treated and recycled.
In the prior art, a combined process of advanced oxidation pretreatment and biochemical treatment is adopted, wherein the advanced oxidation pretreatment process mainly reduces organic matters in water and improves the biodegradability of filtrate. The advanced oxidation pretreatment process generally selects micro-electrolysis, fenton and other processes, and the micro-electrolysis process and Fenton process need a large amount of chemical drugs to reduce organic matters in water, but the use of the drugs can increase the salt in the water to increase the sludge amount, so that the practicability is poor.
Disclosure of Invention
The utility model provides an evaporation device for treating fermentation filtrate, which aims to solve the problem that the sludge amount in water is increased due to the fact that organic matters in wastewater are degraded by a micro-electrolysis process and a Fenton process in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided an evaporation apparatus for treating fermentation filtrate, comprising:
the fermentation filtrate storage tank is provided with a feed inlet and a discharge outlet and is used for storing fermentation filtrate;
the evaporation separation unit is communicated with the discharge port and is used for separating solids and liquid in the fermentation filtrate, evaporating the liquid in the fermentation filtrate and discharging the separated solids; and
and the condensing structure is communicated with the evaporation separation unit and is used for condensing the water vapor guided out by the evaporation separation unit and guiding out the condensed water for recycling.
In one possible implementation, the evaporation separation unit includes a first separator, a first heater, a second separator, a second heater, a third separator, and a third heater; the first separator is connected with the discharge port and is used for carrying out preliminary solid-liquid separation on fermentation filtrate led out by the fermentation filtrate storage tank, the first heater is connected with the first separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the second separator, the second separator is connected with the discharge port of the first separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the first separator, the second heater is connected with the second separator and is used for carrying out liquid heating evaporation on the fermentation filtrate led in by the second separator, the third separator is connected with the discharge port of the second separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the third separator and is connected with the third separator and is used for carrying out liquid heating evaporation on the fermentation filtrate in the third separator.
In one possible implementation manner, the evaporation separation unit further comprises a fourth separator and a fourth heater, wherein the fourth separator is connected with a discharge hole of the third separator, the fourth separator is used for performing solid-liquid separation on fermentation filtrate led in by the third separator, and the fourth heater is connected with the fourth separator and is used for heating and evaporating liquid in the fourth separator.
In one possible implementation manner, the evaporation separation unit further includes a plurality of first circulation pumps, and each of the first circulation pumps is disposed between the first separator and the first heater, between the second separator and the second heater, between the third separator and the third heater, and between the fourth separator and the fourth heater, respectively.
In one possible implementation manner, the evaporation separation unit further includes a plurality of second circulation pumps, and each of the second circulation pumps is disposed between the first separator and the second separator, between the second separator and the third separator, and between the third separator and the fourth separator, respectively.
In one possible implementation, the evaporation separation unit further includes a dryer, and the dryer is connected to the discharge port of the fourth separator.
In one possible implementation manner, the condensation structure includes a condenser and a condensation water tank, an air inlet of the condenser is connected with an air outlet of the dryer, and a liquid inlet of the condensation water tank is communicated with the first heater, the second heater, the third heater, the fourth heater and the condenser.
In one possible implementation manner, the evaporation device for treating the fermentation filtrate further comprises a vacuum pump, wherein the first separator, the first heater, the third heater and the fourth heater are all provided with non-condensable gas exhaust holes, each non-condensable gas exhaust hole is connected with the air inlet of the condenser, the vacuum pump is connected with the air outlet of the condenser, and the vacuum pump is used for guiding out non-condensable gas in the condenser.
The evaporation device for treating fermentation filtrate provided by the utility model has the beneficial effects that: compared with the prior art, the fermentation filtrate storage tank is used for storing fermentation filtrate. The evaporation separation unit is communicated with a discharge hole of the fermentation filtrate storage tank, so that the fermentation filtrate led in by the fermentation filtrate storage tank is subjected to solid-liquid separation, liquid in the fermentation filtrate is evaporated, and solids obtained by separation after treatment of the evaporation separation unit are discharged, so that treatment of the fermentation filtrate is realized. And the condensing structure is used for condensing the water vapor led out by the evaporation separation unit, and guiding out the condensed water for recycling, so that the cost is saved, the medicine is not needed in the whole process of treating the fermentation filtrate, and the method is environment-friendly and has good practicability.
Drawings
Fig. 1 is a schematic structural diagram of an evaporation device for treating fermentation filtrate according to an embodiment of the present utility model.
Reference numerals illustrate:
10. a fermentation filtrate storage tank; 11. a feed inlet; 20. an evaporation separation unit; 21. a first separator; 22. a first heater; 23. a second separator; 24. a second heater; 25. a third separator; 26. a third heater; 27. a fourth separator; 28. a fourth heater; 29. a first circulation pump; 210. a second circulation pump; 220. a third circulation pump; 230. a dryer; 231. a dryer outlet; 30. a condensing structure; 31. a condenser; 311. a circulating water inlet; 312. a circulating water outlet; 32. a condensate water tank; 40. a vacuum pump; 50. a secondary steam preheater; 60. a raw steam condensate water tank; 70. a raw steam inlet.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements or interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, an evaporation apparatus for treating fermentation filtrate according to the present utility model will now be described. The evaporation device for treating fermentation filtrate comprises a fermentation filtrate storage tank 10, an evaporation separation unit 20 and a condensation structure 30. The fermentation filtrate tank 10 has a discharge port, and the fermentation filtrate tank 10 is used for storing fermentation filtrate. The evaporation and separation unit 20 is connected to the discharge port, and is used for separating solids and liquids in the fermentation filtrate, evaporating the liquids in the fermentation filtrate, and discharging the separated solids. The condensation structure 30 is communicated with the evaporation separation unit 20, and is used for condensing the water vapor led out by the evaporation separation unit 20 and leading out the condensed water for recycling.
Compared with the prior art, the evaporation device for treating fermentation filtrate provided by the embodiment of the utility model has the advantage that the fermentation filtrate storage tank 10 is used for storing fermentation filtrate. The evaporation separation unit 20 is communicated with a discharge port of the fermentation filtrate storage tank 10, so that the fermentation filtrate led in by the fermentation filtrate storage tank 10 is subjected to solid-liquid separation, liquid in the fermentation filtrate is evaporated, and solids obtained by separation after treatment by the evaporation separation unit 20 are discharged, so that treatment of the fermentation filtrate is realized. And the condensing structure 30 is further arranged in communication with the evaporation separation unit 20, the condensing structure 30 is used for condensing the water vapor led out by the evaporation separation unit 20, and guiding out the condensed water for recycling, so that the cost is saved, the medicine is not needed in the whole process of treating the fermentation filtrate, and the method is environment-friendly and has good practicability.
In some embodiments, referring to fig. 1, the evaporation separation unit 20 includes a first separator 21, a first heater 22, a second separator 23, a second heater 24, a third separator 25, and a third heater 26. The first separator 21 is connected with a discharge port for performing preliminary solid-liquid separation on the fermentation filtrate led out from the fermentation filtrate tank 10, the first heater 22 is connected with the first separator 21, and the first heater 22 is used for heating and evaporating the liquid in the first separator 21. The second separator 23 is connected to the discharge port of the first separator 21, the second separator 23 is used for solid-liquid separation of the fermentation filtrate introduced from the first separator 21, the second heater 24 is connected to the second separator 23, and the second heater 24 is used for heating and evaporating the liquid in the second separator 23. The third separator 25 is connected to the outlet of the second separator 23, and the third separator 25 is used for performing solid-liquid separation on the fermentation filtrate introduced from the second separator 23. The third heater 26 is connected to the third separator 25, and the third heater 26 is used for heating and evaporating the liquid in the third separator 25. In this embodiment, the fermentation filtrate is subjected to three-step solid-liquid separation and liquid heating evaporation by the first separator 21, the first heater 22, the second separator 23, the second heater 24, the third separator 25 and the third heater 26, so that the liquid is ensured to be fully evaporated, the organic matters in the fermentation filtrate are fully treated, the environmental pollution is avoided, and the practicability is enhanced.
In some embodiments, referring to fig. 1, the evaporation separation unit 20 further includes a fourth separator 27 and a fourth heater 28. The fourth separator 27 is connected to the outlet of the third separator 25, the fourth separator 27 is used for solid-liquid separation of the fermentation filtrate introduced from the third separator 25, the fourth heater 28 is connected to the fourth separator 27, and the fourth heater 28 is used for heating and evaporating the liquid in the fourth separator 27. In this embodiment, the fermentation filtrate is subjected to four-step evaporation treatment by the first separator 21, the first heater 22, the second separator 23, the second heater 24, the third separator 25, the third heater 26, the fourth separator 27 and the fourth heater 28, so that water in the fermentation filtrate is separated from organic matters and salts, and the treatment of the organic matters and salts in the fermentation filtrate is realized.
In some embodiments, referring to fig. 1, the evaporation separation unit 20 further includes a plurality of first circulation pumps 29, where each first circulation pump 29 is disposed between the first separator 21 and the first heater 22, between the second separator 23 and the second heater 24, between the third separator 25 and the third heater 26, and between the fourth separator 27 and the fourth heater 28, respectively. In this embodiment, a plurality of first circulation pumps 29 are provided, so as to realize the circulation evaporation process of the fermentation filtrate in the first separator 21, the second separator 23, the third separator 25 and the fourth separator 27, ensure the evaporation effect of the fermentation filtrate, and enhance the practicability.
In some embodiments, referring to fig. 1, the evaporation separation unit 20 further includes a second circulation pump 210, where the second circulation pump 210 is provided with a plurality of second circulation pumps. Each second circulation pump 210 is provided between the first separator 21 and the second separator 23, between the second separator 23 and the third separator 25, and between the third separator 25 and the fourth separator 27, respectively. In this embodiment, the second circulation pump 210 is provided between the first separator 21 and the second separator 23, between the second separator 23 and the third separator 25, and between the third separator 25 and the fourth separator 27, respectively, so that the fermentation filtrate in the second separator 23 can be returned to the first separator 21 for solid-liquid separation again, and in the same way, the fermentation filtrate in the third separator 25 and the fourth separator 27 can be returned to the second separator 23 and the third separator 25 for solid-liquid separation again, thereby ensuring sufficient solid-liquid separation of the fermentation filtrate.
In some embodiments, referring to fig. 1, the evaporation separation unit 20 further includes a dryer 230, and the dryer 230 is connected to the discharge port of the fourth separator 27. In this embodiment, the dryer 230 is connected to the outlet of the fourth separator 27, so that the solids discharged from the fourth separator 27 are dried and discharged for further treatment.
In the above embodiment, the dryer 230 may be a paddle dryer.
In some embodiments, referring to fig. 1, the condensing structure 30 includes a condenser 31 and a condensate water tank 32. The air inlet of the condenser 31 is connected to the air outlet of the dryer 230. The liquid inlet of the condensate tank 32 is communicated with the first heater 22, the second heater 24, the third heater 26, the fourth heater 28 and the condenser 31. In this embodiment, the air inlet of the condenser 31 is communicated with the air outlet of the dryer 230, so that the water vapor discharged from the dryer 230 is collected and condensed for recycling. The liquid inlet of the condensate water tank 32 is communicated with the liquid outlet of the first heater 22, the liquid outlet of the second heater 24, the liquid outlet of the third heater 26, the liquid outlet of the fourth heater 28 and the liquid outlet of the condenser 31, so that condensate water in the first heater 22, the second heater 24, the third heater 26, the fourth heater 28 and the condenser 31 is collected for recycling through the condensate water tank 32, and the cost is saved.
In the above embodiment, the condenser 31 has the circulating water inlet 311 and the circulating water outlet 312.
In some embodiments, referring to fig. 1, the evaporation apparatus for treating fermentation filtrate according to the embodiment of the present utility model further includes a vacuum pump 40. The first separator 21, the first heater 22, the third heater 26 and the fourth heater 28 are all provided with non-condensable gas exhaust holes, each non-condensable gas exhaust hole is connected with the air inlet of the condenser 31, the vacuum pump 40 is connected with the air outlet of the condenser 31, and the vacuum pump 40 is used for guiding out non-condensable gas in the condenser 31. In this embodiment, the non-condensable gas in the first separator 21, the first heater 22, the third heater 26 and the fourth heater 28 is introduced into the condenser 31 through the non-condensable gas exhaust hole, and then the non-condensable gas in the condenser 31 is led out through the vacuum pump 40, so that the non-condensable gas is periodically exhausted, and the heat transfer efficiency is improved.
In the above embodiment, the non-condensable gas exhaust holes of the first separator 21, the first heater 22, the third heater 26 and the fourth heater 28 are all provided with control valves, and the control valves are used for controlling the on-off of the non-condensable gas exhaust holes, so as to realize the periodic discharge of the non-condensable gas through the control valves.
In some embodiments, referring to fig. 1, the evaporation device for treating fermentation filtrate provided in the embodiment of the present utility model is further provided with a secondary steam preheater 50 and a raw steam inlet 70, wherein a feed inlet 11 of the secondary steam preheater 50 is communicated with a discharge outlet of the fermentation filtrate storage tank 10, and a discharge outlet of the secondary steam preheater 50 is communicated with a feed inlet 11 of the first separator 21. The raw steam inlet 70 is connected to the fourth heater 28 for introducing steam into the fourth heater 28. The trend of the raw steam is as follows: the raw steam enters the fourth heater 28 as a heat source, the secondary steam generated by the fourth separator 27 enters the third heater 26 as a heat source, the secondary steam generated by the third separator 25 enters the second heater 24 as a heat source, and the secondary steam generated by the second separator 23 enters the first heater 22 as a heat source. The secondary steam generated by the first heater 22 enters the secondary steam preheater and the condenser 31 and is condensed into water to be discharged. The pressures of the first separator 21, the first heater 22, the second separator 23, the second heater 24, the third separator 25, the third heater 26, the fourth separator 27, and the fourth heater 28 are controlled by the vacuum pump 40.
In the above embodiment, the evaporation apparatus for treating fermentation filtrate is further provided with a raw steam condensate water tank 60, and the fourth heater 28 and the dryer 230 are both in communication with the raw steam condensate water tank 60, so that condensed water in the fourth heater 28 and the dryer 230 can be collected in the raw steam condensate water tank 60 for recycling.
In some embodiments, the trend of the fermentation filtrate is: after entering the fermentation filtrate storage tank 10, the fermentation filtrate enters secondary steam through a feed pump to be preheated and then is transferred into the first separator 21, and then the materials are continuously circulated through the first circulating pump 29, so that the purpose of evaporation is achieved; the materials in the first separator 21 enter the second separator 23 through the second circulating pump 210, and then the materials are continuously circulated through the first circulating pump 29, so that the purpose of evaporation is achieved; the materials in the second separator 23 enter the third separator 25 through the second circulating pump 210, and then the materials are continuously circulated through the first circulating pump 29, so that the purpose of evaporation is achieved; the materials in the third separator 25 enter the fourth separator 27 through the second circulating pump 210, and then the materials are continuously circulated through the first circulating pump 29, so that the purpose of evaporation is achieved. The concentrated solution is discharged to the dryer 230 through the third circulation pump 220 to the outside, and the dryer 230 dries the concentrated solution into a solid substance and then discharges the solid substance through the dryer outlet 231.
The trend of the condensed water is as follows: the raw steam enters the fourth heater 28 to release heat and then is condensed into condensed water, and enters the raw steam condensate water tank 60 to be lifted by a pump and sent to a boiler water supplementing system. The condensed water generated in the jacket of the third heater 26, the condensed water generated in the jacket heated by the second heater 24, the condensed water generated in the jacket heated by the first heater 22, and the condensed water generated in the jacket heated by the condenser 31 are collected and enter the condensed water tank 32, and the biochemical system is lifted by the water pump.
In some embodiments, in consideration of the situation that the boiling point of the fermentation filtrate increases during steaming and the viscosity of the fermentation filtrate increases after concentration, the flow direction of the raw steam is opposite to the flow direction of the fermentation filtrate, and the flow rate of the fermentation filtrate in the heat exchange tubes in the first heater 22, the second heater 24, the third heater 26, and the fourth heater 28 is greater than 1.8m/s. An automatic valve is added at the feed inlet 11 of the second separator 23 to control the discharge amount of the first separator 21, an automatic valve is added at the feed inlet 11 of the third separator 25 to control the discharge amount of the second separator 23, an automatic valve is added at the feed inlet 11 of the fourth separator 27 to control the discharge amount of the third separator 25, and an automatic valve is added at the discharge outlet of the fourth separator 27 to control the discharge amount of the fourth separator 27 to the paddle dryer 230.
The heating steam temperature of the first heater 22 is 60-70 ℃, the heating steam temperature of the second heater 24 is 75-85 ℃, the heating steam temperature of the third heater 26 is 90-100 ℃, and the heating steam temperature of the fourth heater 28 is 120-130 ℃; the heating steam temperature of the secondary steam preheater is 50-60 ℃.
The temperature of the secondary steam generated by the first separator 21 is 50-60 ℃, the temperature of the secondary steam generated by the second separator 23 is 60-70 ℃, the temperature of the secondary steam generated by the third separator 25 is 75-85 ℃, and the temperature of the secondary steam generated by the fourth separator 27 is 90-100 ℃.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. An evaporation apparatus for treating fermentation filtrate, comprising:
the fermentation filtrate storage tank is provided with a feed inlet and a discharge outlet and is used for storing fermentation filtrate;
the evaporation separation unit is communicated with the discharge port and is used for separating solids and liquid in the fermentation filtrate, evaporating the liquid in the fermentation filtrate and discharging the separated solids; and
and the condensing structure is communicated with the evaporation separation unit and is used for condensing the water vapor guided out by the evaporation separation unit and guiding out the condensed water for recycling.
2. The evaporation apparatus for treating fermentation filtrate according to claim 1, wherein the evaporation separation unit comprises a first separator, a first heater, a second separator, a second heater, a third separator, and a third heater; the first separator is connected with the discharge port and is used for carrying out preliminary solid-liquid separation on fermentation filtrate led out by the fermentation filtrate storage tank, the first heater is connected with the first separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the second separator, the second separator is connected with the discharge port of the first separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the first separator, the second heater is connected with the second separator and is used for carrying out liquid heating evaporation on the fermentation filtrate led in by the second separator, the third separator is connected with the discharge port of the second separator and is used for carrying out solid-liquid separation on the fermentation filtrate led in by the third separator and is connected with the third separator and is used for carrying out liquid heating evaporation on the fermentation filtrate in the third separator.
3. The evaporation apparatus for treating fermentation filtrate according to claim 2, wherein the evaporation separation unit further comprises a fourth separator connected to a discharge port of the third separator, the fourth separator being for performing solid-liquid separation of the fermentation filtrate introduced from the third separator, and a fourth heater connected to the fourth separator, for heating and evaporating the liquid in the fourth separator.
4. The evaporation apparatus for treating fermentation filtrate according to claim 3, wherein the evaporation separation unit further comprises a plurality of first circulation pumps, each of the first circulation pumps being provided between the first separator and the first heater, between the second separator and the second heater, between the third separator and the third heater, and between the fourth separator and the fourth heater, respectively.
5. The evaporation apparatus for treating fermentation filtrate according to claim 3, wherein the evaporation separation unit further comprises a plurality of second circulation pumps, each of the second circulation pumps being provided between the first separator and the second separator, between the second separator and the third separator, and between the third separator and the fourth separator, respectively.
6. The evaporation apparatus for fermentation filtrate treatment according to claim 3, wherein the evaporation separation unit further comprises a dryer, and the dryer is connected to the discharge port of the fourth separator.
7. The evaporation apparatus for a fermentation filtrate treatment apparatus according to claim 6, wherein the condensation structure comprises a condenser and a condensation water tank, an air inlet of the condenser is connected to an air outlet of the dryer, and a liquid inlet of the condensation water tank is communicated with the first heater, the second heater, the third heater, the fourth heater and the condenser.
8. The evaporation apparatus for treating fermentation filtrate according to claim 7, further comprising a vacuum pump, wherein each of the first separator, the first heater, the third heater, and the fourth heater is provided with a non-condensable gas vent, each of the non-condensable gas vents is connected to the air inlet of the condenser, the vacuum pump is connected to the air outlet of the condenser, and the vacuum pump is configured to discharge the non-condensable gas in the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223239371.4U CN219058591U (en) | 2022-12-02 | 2022-12-02 | Evaporation device for treating fermentation filtrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223239371.4U CN219058591U (en) | 2022-12-02 | 2022-12-02 | Evaporation device for treating fermentation filtrate |
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| CN219058591U true CN219058591U (en) | 2023-05-23 |
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| CN202223239371.4U Active CN219058591U (en) | 2022-12-02 | 2022-12-02 | Evaporation device for treating fermentation filtrate |
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| CN (1) | CN219058591U (en) |
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2022
- 2022-12-02 CN CN202223239371.4U patent/CN219058591U/en active Active
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