CN114163103B - Low-temperature material solidification drying device and processing system - Google Patents
Low-temperature material solidification drying device and processing system Download PDFInfo
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- CN114163103B CN114163103B CN202111393641.4A CN202111393641A CN114163103B CN 114163103 B CN114163103 B CN 114163103B CN 202111393641 A CN202111393641 A CN 202111393641A CN 114163103 B CN114163103 B CN 114163103B
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- 239000000463 material Substances 0.000 title claims abstract description 106
- 238000001035 drying Methods 0.000 title claims abstract description 100
- 238000007711 solidification Methods 0.000 title claims abstract description 18
- 230000008023 solidification Effects 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 11
- 238000007790 scraping Methods 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 13
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 13
- 241001330002 Bambuseae Species 0.000 abstract description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 13
- 239000011425 bamboo Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 239000011343 solid material Substances 0.000 abstract description 4
- 239000011344 liquid material Substances 0.000 abstract description 3
- 238000001704 evaporation Methods 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 208000028659 discharge Diseases 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
Abstract
The invention discloses a low-temperature material solidification drying device and a processing system, wherein a spiral conveying mechanism is arranged in a drying cylinder, a spiral blade of the spiral conveying mechanism comprises a separation section and a discharge section which are sequentially connected from a liquid outlet to a solidification material outlet, a liquid leakage hole is arranged on the separation section, and an auxiliary heating unit is used for heating materials in the drying cylinder. Through above-mentioned optimal design's low temperature material solidification drying device, through seting up the weeping hole on screw mechanism's blade, play solid-state and liquid material separation effect, auxiliary heating unit is used for drying the material in the dry section of thick bamboo simultaneously, improves the dry effect of solid material in the dry section of thick bamboo.
Description
Technical Field
The invention relates to the technical field of high-concentration concentrated waste liquid treatment, in particular to a low-temperature material solidification drying device and a treatment system.
Background
The final link of zero discharge treatment of the industrial waste liquid at present, the treatment of the industrial high-concentration waste liquid, is a great difficulty in the prior art. The main stream energy-saving evaporation equipment such as multi-effect evaporation and MVR evaporation equipment can carry out evaporation crystallization on part of specific salt-containing waste liquid to realize the purpose of zero emission, but inorganic salt waste liquid with complex components, waste liquid containing organic impurities and mixed waste liquid can still leave part of high-concentration concentrated waste liquid which cannot be treated finally through evaporation crystallization. Because of the characteristics of high viscosity, large increase of evaporation boiling point, easy scaling and the like, the aim of treatment cannot be fulfilled by conventional evaporation.
For the high-concentration concentrated waste liquid generated after industrial production, the pollution to the environment caused by external discharge is reduced, and enterprises usually use a direct combustion method for treatment. Because of the huge cost of the concentrated waste liquid, new gas pollutants can be generated.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a low-temperature material curing and drying device and a processing system.
The invention provides a low-temperature material curing and drying device, which comprises: a drying cylinder, a spiral conveying mechanism and an auxiliary heating unit;
the drying cylinder is transversely arranged, an inlet to be treated is formed in the drying cylinder, a liquid outlet and a solidified material outlet are respectively formed in two ends of the drying cylinder, the spiral conveying mechanism is positioned in the drying cylinder and used for conveying materials to the solidified material outlet, and the auxiliary heating unit is used for heating the materials in the drying cylinder;
the spiral conveying mechanism comprises a driving shaft positioned in the middle and a spiral blade arranged around the driving shaft, the spiral blade comprises a separation section and a discharge section which are sequentially connected from the liquid outlet to the direction of the solidified material outlet, and a liquid leakage hole is formed in the separation section.
Preferably, the screw conveyor further comprises a plurality of scrapers located in the screw blade gaps, the scrapers being arranged in the direction of the drive shaft and being arranged towards the inner wall of the drying cylinder.
Preferably, two ends of the scraping plate are respectively connected with the blade bodies at two adjacent sides through torsion springs.
Preferably, the screw conveying mechanism further comprises a mounting shaft, the mounting shaft sequentially penetrates through the plurality of blade bodies along the driving shaft direction and is fixedly connected with the screw blade, and one end, far away from the inner wall of the drying cylinder, of the scraping plate is rotatably mounted on the mounting shaft.
Preferably, the plurality of blade bodies are circumferentially distributed around the drive shaft.
Preferably, the drying machine further comprises a foam spraying mechanism, wherein the foam spraying mechanism is used for spraying and defoaming in the drying cylinder.
Preferably, the auxiliary heating unit comprises a microwave heating mechanism mounted on the drying drum for heating the material in the drying drum.
Preferably, a steam channel is arranged in the outer wall of the drying cylinder, and the auxiliary heating unit further comprises a steam heating mechanism which is used for heating steam in the steam channel.
According to the low-temperature material solidification and drying device, the spiral conveying mechanism is arranged in the drying cylinder, the spiral blades of the spiral conveying mechanism comprise the separation section and the discharge section which are sequentially connected from the liquid outlet to the solidification material outlet, the separation section is provided with the liquid leakage hole, and the auxiliary heating unit is used for heating materials in the drying cylinder. Through above-mentioned optimal design's low temperature material solidification drying device, through seting up the weeping hole on screw mechanism's blade, play solid-state and liquid material separation effect, auxiliary heating unit is used for drying the material in the dry section of thick bamboo simultaneously, improves the dry effect of solid material in the dry section of thick bamboo.
The invention also provides a low-temperature material curing treatment system which comprises the low-temperature material curing and drying device;
the condensing device is connected with the steam outlet and used for cooling the steam discharged from the steam outlet to form condensed water.
Preferably, the solidified material outlet switch of the drying cylinder is controlled by comparing the water content of the material entering the drying cylinder with the condensation water content of the condensation device.
In the invention, the technical effects of the low-temperature material curing treatment system are similar to those of the low-temperature material curing drying device, so that the description is omitted.
Drawings
Fig. 1 is a schematic structural diagram of a low-temperature material solidifying and drying device provided by the invention.
Fig. 2 is a schematic diagram of the internal structure of a low-temperature material solidifying and drying device according to the present invention.
Fig. 3 is a schematic structural diagram of a screw conveying mechanism of a low-temperature material solidifying and drying device.
Fig. 4 is a schematic view of a partial structure of a spiral blade of a low-temperature material solidifying and drying device according to the present invention.
Fig. 5 is a schematic structural diagram of a low-temperature material curing system according to the present invention.
Fig. 6 is a schematic diagram of the working principle of a low-temperature material curing system according to the present invention.
Detailed Description
As shown in fig. 1 to 6, fig. 1 is a schematic structural diagram of a low-temperature material curing and drying device according to the present invention, fig. 2 is a schematic structural diagram of an internal structure of a low-temperature material curing and drying device according to the present invention,
FIG. 3 is a schematic structural diagram of a screw conveying mechanism of a low-temperature material solidifying and drying device provided by the invention,
fig. 4 is a schematic view of a partial structure of a spiral blade of a low-temperature material curing and drying device according to the present invention, fig. 5 is a schematic view of a low-temperature material curing and processing system according to the present invention, and fig. 6 is a schematic view of an operating principle of a low-temperature material curing and processing system according to the present invention.
Referring to fig. 1 to 3, the low-temperature material solidifying and drying apparatus of the present embodiment includes: a drying cylinder 1, a spiral conveying mechanism and an auxiliary heating unit;
the drying cylinder 1 is transversely arranged, an inlet to be treated is formed in the drying cylinder 1, a liquid outlet and a solidified material outlet are respectively formed in two ends of the drying cylinder 1, the spiral conveying mechanism is positioned in the drying cylinder 1 and used for conveying materials to the solidified material outlet, and the auxiliary heating unit is used for heating the materials in the drying cylinder 1;
the screw conveying mechanism comprises a driving shaft 2 positioned in the middle and a screw blade 3 arranged around the driving shaft 2, wherein the screw blade 3 comprises a separation section and a discharge section which are sequentially connected from the liquid outlet to the direction of the solidified material outlet, and a liquid leakage hole 31 is formed in the separation section.
The drying cylinder 1 is also provided with a steam outlet, and the condensing device is connected with the steam outlet and used for cooling the steam discharged from the steam outlet to form condensed water.
In the specific drying process of the low-temperature material curing and drying device, the material to be dried is sent into a drying cylinder through an inlet to be processed, and is pushed to the outlet direction of the cured material under the action of a spiral conveying mechanism, and in the pushing process, extruded liquid in the material flows back through a liquid leakage hole due to the extrusion action of a spiral blade and is discharged through a liquid outlet; simultaneously, be used for heating the material in the dry section of thick bamboo 1 through auxiliary heating unit for the material is in the removal in-process to solidification material export, continuously is heated the evaporation, thereby guarantees the drying of ejection of compact material.
In this embodiment, the low temperature material solidification drying device that proposes is equipped with screw conveying mechanism in the drying cylinder, screw conveying mechanism's helical blade include follow the liquid export to the separation section and the ejection of compact section that solidification material export direction connects gradually, be equipped with the weeping hole on the separation section, auxiliary heating unit is used for heating the material in the drying cylinder. Through above-mentioned optimal design's low temperature material solidification drying device, through seting up the weeping hole on screw mechanism's blade, play solid-state and liquid material separation effect, auxiliary heating unit is used for drying the material in the dry section of thick bamboo simultaneously, improves the dry effect of solid material in the dry section of thick bamboo.
When the screw conveying mechanism is driven to work, the two-stage speed reduction motor set 8 can be adopted for direct driving, the speed reduction motor can be switched in forward and reverse rotation, the rotating speed is 1-2 revolutions per minute, the control is accurate, the materials are slowly turned over, and the materials are heated uniformly.
In the concrete heating mode of material drying, auxiliary heating unit includes microwave heating mechanism 12, and microwave heating mechanism 12 installs on dry section of thick bamboo 1 and is used for heating the material in the dry section of thick bamboo 1, through microwave heating, last low temperature heating in the transportation process to the solid material of separation in the dry section of thick bamboo, guarantees that it evaporates fast in low temperature low pressure environment, avoids the high temperature to cause the concentrated waste liquid to produce gaseous pollutant.
In addition, in order to improve the drying effect in the drying cylinder, a steam channel 6 is arranged in the outer wall of the drying cylinder 1, and the auxiliary heating unit further comprises a steam heating mechanism which is used for heating the steam in the steam channel 6; by matching the steam heating in the steam channel with the microwave heating. Preferably, the steam channel 6 has an S-shaped structure, which lengthens the steam accommodating time.
In order to avoid material adhering to the inner wall of the drying cylinder during drying, referring to fig. 4, in other embodiments, the screw conveyor mechanism further comprises a plurality of scrapers 4, wherein the scrapers 4 are positioned in the gaps of the screw blades 3, and the scrapers 4 are arranged along the direction of the driving shaft 2 and towards the inner wall of the drying cylinder 1; when the spiral conveying mechanism feeds materials, the scraping plate rotates along with the spiral blade, so that the materials in the drying cylinder are scraped in the circumferential direction.
In a further specific embodiment, two ends of the scraping plate 4 are respectively connected with the blade bodies at two adjacent sides through torsion springs 7; specifically, screw conveying mechanism still includes installation axle 5, and installation axle 5 runs through a plurality of blade bodies and with helical blade 3 fixed connection in proper order along drive shaft 2 direction, and scraper blade 4 is kept away from dry section of thick bamboo 1 inner wall one end rotatable mounting on installation axle 5.
The scraper blade is fixed on helical blade through the torsional spring, realizes with the elastic contact of dry section of thick bamboo inner wall, at the in-process of scale deposit on the clearance section of thick bamboo wall, when touching harder or abnormal conditions, warp protection scraper blade through the torsional spring. Preferably, the scraping plate and the cylinder wall can be arranged at a preset angle, and under the condition of abrasion of the scraping plate, the self-adjusting angle can be realized through the torsion spring, the gap between the self-adjusting angle and the cylinder wall is self-adjusted, and the scraping effect is ensured.
In order to ensure scraping efficiency, a plurality of blade bodies are circumferentially distributed around the drive shaft 2.
In addition, the low-temperature material curing and drying device of the embodiment further comprises a foam spraying mechanism, wherein the foam spraying mechanism is used for spraying and defoaming in the drying cylinder 1; when the material foams, spraying defoaming is carried out to prevent the material in the furnace from foaming and bumping.
Referring to fig. 5, the invention provides a low-temperature material solidification processing system, which comprises a low-temperature material solidification drying device and a condensing device, wherein the material to be processed is dried by utilizing microwave heating, and steam generated by heating is cooled by the condensing device to form condensed water.
In a specific design mode of the condensing device, the condensing device comprises a condensing exchanger 9, a vacuum tank 10 and a vacuum pump 11; the condensing exchanger 9, the vacuum tank 10 and the vacuum pump 11 are sequentially communicated with a steam outlet of the drying cylinder 1, and steam at the steam outlet firstly enters the condensing exchanger 9 for cooling under the action of the vacuum pump 11 and then enters the vacuum tank 10 for condensation to form condensed water.
In the specific working process, under the action of a vacuum pump, the vapor generated by heating in the drying cylinder firstly enters a condensation exchanger for heat exchange and cooling, and then enters a vacuum tank for condensation to form condensed water. Due to the moisture contained in the material before treatment, one part of the moisture is discharged through the liquid generated by solid-liquid separation in the drying cylinder, and the other part of the moisture is finally discharged in the form of condensed water in the vacuum tank through the vapor. Thus, in controlling the operation of the dryer cartridge, the solidified material outlet switch of the dryer cartridge 1 is controlled by comparing the water content of the material entering the dryer cartridge 1 with the amount of condensed water in the vacuum tank 10.
In order to describe the microwave low-temperature material curing processing system and processing method of the present embodiment in detail, the following describes the specific operation procedure of the system of the present embodiment in detail with reference to fig. 6:
s1, high-concentration waste liquid to be treated enters a drying cylinder from a feeding pipeline, and a flowmeter and a solenoid valve switch for controlling on-off of feeding are arranged on the feeding pipeline;
s2, when materials enter the drying cylinder, the vacuum pump is simultaneously started to vacuumize the vacuum tank, the vacuum tank is connected with the condensing exchanger, and the condensing exchanger is communicated with the drying cylinder, so that the whole equipment is stabilized in a pressure environment of-0.09 Mpa G;
s3, when the materials enter the microwave low-temperature drying unit furnace, steam auxiliary heating is started simultaneously, auxiliary heating is performed on the materials, and the temperature of the materials is controlled to be 40-60 ℃.
And S4, when the pressure in the drying cylinder reaches a preset condition, after the material in the drying cylinder reaches a proper material level, starting the microwave, and starting the evaporation and solidification of the material under the continuous overturning of the spiral conveying shaft.
S5, when the drying cylinder starts to work, the temperature sensor, the pressure sensor and the foam sensor continuously monitor the environment in the furnace. If the foaming phenomenon exists, the defoaming spraying is started, and the defoaming is performed; if the pressure or the temperature is abnormal, the control system timely adjusts the microwave source and the vacuum device to ensure normal operation.
S6, secondary steam generated during evaporation and solidification of the materials enters a condensation exchanger from an air outlet pipeline and is connected and conveyed to a vacuum tank, and a drainage pump is arranged at the bottom of the vacuum tank to regularly drain condensed water.
S7, comparing the water content and the entering amount of the entering materials with condensed water of a vacuum tank, judging the dryness of the materials, judging that the dryness of the materials reaches a preset dryness degree, opening a discharge valve, and discharging the solidified materials at the position.
S8, judging the material level in the drying cylinder through a material level sensor, and opening a feed valve to supplement materials when the material level is reduced, so that continuous feeding and discharging and material recycling are realized.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. A low temperature material solidification drying device, characterized by comprising: a drying cylinder (1), a spiral conveying mechanism and an auxiliary heating unit;
the drying cylinders (1) are transversely arranged, inlets to be treated are formed in the drying cylinders (1), liquid outlets and solidified material outlets are respectively formed in two ends of the drying cylinders (1), the spiral conveying mechanism is located in the drying cylinders (1) and used for conveying materials to the solidified material outlets, and the auxiliary heating unit is used for heating the materials in the drying cylinders (1);
the spiral conveying mechanism comprises a driving shaft (2) positioned in the middle and a spiral blade (3) arranged around the driving shaft (2), the spiral blade (3) comprises a separation section and a discharge section which are sequentially connected from the liquid outlet to the solidified material outlet, and the separation section is provided with a liquid leakage hole (31);
the spiral conveying mechanism further comprises a plurality of scrapers (4), the scrapers (4) are positioned in the gaps of the spiral blades (3), and the scrapers (4) are arranged along the direction of the driving shaft (2) and towards the inner wall of the drying cylinder (1);
two ends of the scraping plate (4) are respectively connected with the blade bodies at two adjacent sides through torsion springs (7);
the screw conveying mechanism further comprises a mounting shaft (5), the mounting shaft (5) sequentially penetrates through a plurality of blade bodies along the direction of the driving shaft (2) and is fixedly connected with the screw blade (3), and one end, far away from the inner wall of the drying cylinder (1), of the scraping plate (4) is rotatably mounted on the mounting shaft (5).
2. The cryogenic matter curing drying plant of claim 1, characterized in that a plurality of blade bodies are circumferentially distributed around the drive shaft (2).
3. The low-temperature material curing and drying device according to claim 1, further comprising a foam spraying mechanism (8), wherein the foam spraying mechanism (8) is used for spraying and defoaming in the drying cylinder (1).
4. The low-temperature material solidifying and drying device according to claim 1, wherein the auxiliary heating unit comprises a microwave heating mechanism (12), and the microwave heating mechanism (12) is arranged on the drying cylinder (1) and used for heating the material in the drying cylinder (1).
5. The low-temperature material solidifying and drying device according to claim 4, wherein a steam channel (6) is arranged in the outer wall of the drying cylinder (1), and the auxiliary heating unit further comprises a steam heating mechanism for heating steam in the steam channel (6).
6. A low-temperature material curing treatment system, characterized by comprising the low-temperature material curing drying device according to any one of claims 1 to 5;
the drying cylinder (1) is also provided with a steam outlet, and the condensing device is connected with the steam outlet and used for cooling the steam discharged from the steam outlet to form condensed water;
the solidified material outlet switch of the drying cylinder (1) is controlled by comparing the water content of the material entering the drying cylinder (1) with the condensation water content of the condensation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111393641.4A CN114163103B (en) | 2021-11-23 | 2021-11-23 | Low-temperature material solidification drying device and processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111393641.4A CN114163103B (en) | 2021-11-23 | 2021-11-23 | Low-temperature material solidification drying device and processing system |
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| Publication Number | Publication Date |
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| CN114163103A CN114163103A (en) | 2022-03-11 |
| CN114163103B true CN114163103B (en) | 2024-04-12 |
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| CN202111393641.4A Active CN114163103B (en) | 2021-11-23 | 2021-11-23 | Low-temperature material solidification drying device and processing system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1043890A (en) * | 1996-07-31 | 1998-02-17 | Erepon Kakoki Kk | Screw press type dewatering machine |
| CN105556230A (en) * | 2013-09-18 | 2016-05-04 | 阿里-杰克控股私人有限公司 | Process and apparatus for treating sludge |
| CN207708944U (en) * | 2017-11-30 | 2018-08-10 | 上海早苗食品有限公司 | A kind of Cooling or heating jar |
| JP2019132439A (en) * | 2018-01-29 | 2019-08-08 | 大河 澄男 | Apparatus and method for drying high-moisture biomass resource |
| KR102023080B1 (en) * | 2019-02-15 | 2019-09-19 | 이종원 | Drying device for food waste containing a large amount of water |
-
2021
- 2021-11-23 CN CN202111393641.4A patent/CN114163103B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1043890A (en) * | 1996-07-31 | 1998-02-17 | Erepon Kakoki Kk | Screw press type dewatering machine |
| CN105556230A (en) * | 2013-09-18 | 2016-05-04 | 阿里-杰克控股私人有限公司 | Process and apparatus for treating sludge |
| CN207708944U (en) * | 2017-11-30 | 2018-08-10 | 上海早苗食品有限公司 | A kind of Cooling or heating jar |
| JP2019132439A (en) * | 2018-01-29 | 2019-08-08 | 大河 澄男 | Apparatus and method for drying high-moisture biomass resource |
| KR102023080B1 (en) * | 2019-02-15 | 2019-09-19 | 이종원 | Drying device for food waste containing a large amount of water |
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| Publication number | Publication date |
|---|---|
| CN114163103A (en) | 2022-03-11 |
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