CN114477704A - Explosion-proof type coal slime steam waste heat type drying machine - Google Patents
Explosion-proof type coal slime steam waste heat type drying machine Download PDFInfo
- Publication number
- CN114477704A CN114477704A CN202210014048.2A CN202210014048A CN114477704A CN 114477704 A CN114477704 A CN 114477704A CN 202210014048 A CN202210014048 A CN 202210014048A CN 114477704 A CN114477704 A CN 114477704A
- Authority
- CN
- China
- Prior art keywords
- drying machine
- heat exchanger
- explosion
- communicated
- coal slime
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 31
- 239000002918 waste heat Substances 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 13
- 238000004880 explosion Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract 2
- 239000010802 sludge Substances 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000002817 coal dust Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009834 vaporization Methods 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the technical field of washing equipment, in particular to an explosion-proof coal slime steam waste heat type drying machine.A circulating fan is communicated with a cooling heat exchanger and an air outlet of a high-temperature heat exchanger arranged in a drying machine body; the air outlet of the steam buffer tank is communicated with the air inlet of a high-temperature heat exchanger arranged in the drier body; the water outlet of the cooling tower is communicated with the water inlet of a cooling heat exchanger arranged in the drying machine body, and the water outlet of the cooling heat exchanger is communicated with the water return port of the cooling tower; the nitrogen gas source is communicated with the interior of the drier body; the oxygen sensor is connected on the side wall of the drier body in a run-through manner and is electrically connected with a control valve on the nitrogen gas source pipeline through a controller. It effectively avoids the explosion phenomenon that takes place in the washing and selecting process through multiple explosion-proof measures, improves production safety, personal safety.
Description
Technical Field
The invention relates to the technical field of washing and selecting equipment, in particular to an explosion-proof sludge steam waste heat type drying machine.
Background
The safety production is always the first key of a washing plant, when the coal slime is dried, a large amount of fine coal dust with the particle size of less than 100 mu m is raised, and the concentration of the coal dust raised is accumulated to the lowest limit value of deflagration of 1200-2000g/m3Then, any small spark generated by the collision between the friction metals will cause the explosion phenomenon. Directly endanger production safety, personal safety, cause huge economic loss for washing and dressing factory.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provides an explosion-proof type coal slime steam waste heat type drying machine which effectively solves the problems through multiple explosion-proof measures.
In order to achieve the purpose, the invention adopts the following technical scheme: it comprises a drier body; a sludge distributor is arranged on a feeding port of the drying machine body; a plurality of layers of conveying mesh belts are arranged inside the drying machine body; the side wall of the drier body is in through connection with a wet film dedusting and purifying system, and an air outlet of the wet film dedusting and purifying system is in through connection with a cooling heat exchanger arranged in the drier body; a sludge discharge bucket elevator is arranged at the bottom of the drying machine body and below the lowest layer of the conveying mesh belt; it also includes:
the circulating fan is communicated with the cooling heat exchanger and an air outlet of a high-temperature heat exchanger arranged in the drier body;
the air outlet of the steam buffer tank is communicated with the air inlet of a high-temperature heat exchanger arranged in the drying machine body;
the water outlet of the cooling tower is communicated with the water inlet of a cooling heat exchanger arranged in the drying machine body, and the water outlet of the cooling heat exchanger is communicated with the water return port of the cooling tower;
the nitrogen gas source is communicated with the inside of the drying machine body;
and the oxygen sensor is connected on the side wall of the drying machine body in a through manner and is electrically controlled and connected with a control valve on a nitrogen gas source pipeline through a controller.
By adopting the design of the technical scheme, coal slime with the water content of 26-30% enters the drier body through the sludge distributor to form a humidity gradient, water vapor in the coal slime is brought out layer by layer through steam partial pressure and is gradually humidified, after the water vapor reaches the upper layer, the relative humidity reaches 90%, the drying temperature is 60-65 ℃, at the moment, the humid air contains more coal dust particles with different particle sizes, the coal dust particles are changed into clean humid air through a wet film dust removal and purification system, condensed water is condensed out through the cooling heat exchanger, the drier body is discharged through a water pipe, latent heat of vaporization is released during condensation, the coal slime enters the drier body again through the circulating fan, and the coal slime drying effect is realized through the circulating reciprocation; the oxygen sensor on the side face of the drying machine body detects the oxygen concentration in the internal space of the drying machine body in real time, and when the concentration is higher than 10%, nitrogen is automatically filled into the equipment from a nitrogen source, so that the oxygen content in the equipment is ensured to be lower than 10%, and the explosion possibility is inhibited.
Preferably, a sludge outlet of the sludge distributor is provided with an explosion venting door for improving the integral explosion-proof capacity.
Preferably, the outer wall package of desiccator body is equipped with the heated board for improve the heat preservation effect of desiccator body.
Preferably, the pipelines of the air inlet and the air outlet of the steam buffer tank are respectively provided with a regulating valve for controlling the steam entering and exiting the steam buffer tank.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an explosion-proof coal slime steam waste heat type drying machine which effectively avoids explosion phenomena in a washing process through a plurality of explosion-proof measures and improves production safety and personal safety.
Drawings
FIG. 1 is a schematic diagram of the structure and flow of the present invention.
Description of reference numerals:
the system comprises a drier body 1, a cooling heat exchanger 2, a high-temperature heat exchanger 3, a circulating fan 4, a sludge discharging bucket elevator 5, a sludge distributor 6, a regulating valve 7, a steam buffer tank 8, a venting explosion door 9, a heat insulation board 10, a conveying mesh belt 11, an oxygen sensor 12, a nitrogen gas source 13, a cooling tower 14 and a wet film dust removal purification system 15.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.
As shown in fig. 1, the following technical solutions are adopted in the present embodiment: it comprises a drying machine body 1; a sludge distributor 6 is arranged on a feed inlet of the drying machine body 1, and a sludge outlet of the sludge distributor 6 is provided with an explosion vent 9 for improving the overall explosion-proof capacity; the outer wall of the drier body 1 is wrapped with an insulation board 10 for improving the insulation effect of the drier body 1; the drying machine body 1 is provided with a plurality of explosion-proof devices such as an explosion-proof transmission motor, an explosion-proof electric appliance cabinet, an explosion-proof door and the like, and a plurality of layers of conveying mesh belts 11 are arranged inside the drying machine body 1; the side wall of the drier body 1 is communicated with a wet film dedusting and purifying system 15, and an air outlet of the wet film dedusting and purifying system 15 is communicated with a cooling heat exchanger 2 arranged in the drier body 1; a sludge discharge bucket elevator 5 is arranged at the bottom of the drying machine body 1 below the lowest layer of the conveying mesh belt 11; it also includes:
the circulating fan 4 is communicated with the cooling heat exchanger 2 and an air outlet of a high-temperature heat exchanger 3 arranged in the drier body 1;
the gas outlet of the steam buffer tank 8 is communicated with the gas inlet of the high-temperature heat exchanger 3 arranged in the drier body 1; the pipelines of the air inlet and the air outlet of the steam buffer tank 8 are respectively provided with an adjusting valve 7 for controlling the steam in the steam buffer tank 8;
a water outlet of the cooling tower 14 is communicated with a water inlet of a cooling heat exchanger 2 arranged in the drying machine body 1, and a water outlet of the cooling heat exchanger 2 is communicated with a water return port of the cooling tower 14;
the nitrogen gas source 13 is communicated with the interior of the drier body 1;
and the oxygen sensor 12 is connected to the side wall of the drying machine body 1 in a through manner, and is electrically controlled by a control valve on a controller and a nitrogen gas source 13 pipeline.
By adopting the design of the technical scheme, coal slime with the water content of 26-30% enters the drier body 1 through the sludge distributor 6 to form a humidity gradient, water vapor in the coal slime is taken out layer by layer through steam partial pressure and is gradually humidified, after the water vapor reaches the upper layer, the relative humidity reaches 90%, the drying temperature is 60-65 ℃, at the moment, the humid air contains more coal dust particles with different particle sizes, the humid air is changed into clean humid air through the wet film dust removal and purification system 15, condensed water is condensed out through the cooling heat exchanger 2 and is discharged out of the drier body 1 through a water pipe, latent heat of vaporization is released during condensation, the clean humid air enters the drier body 1 again through the circulating fan 4, and the coal slime drying effect is realized through the circulating and reciprocating; an oxygen sensor 12 on the side surface of the drying machine body 1 detects the oxygen concentration in the internal space of the drying machine body 1 in real time, and when the concentration is higher than 10%, a nitrogen gas source 13 automatically fills nitrogen into the equipment, so that the oxygen content in the equipment is ensured to be lower than 10%, and the explosion possibility is inhibited.
When the drying machine is used, coal slime with the water content of 30% enters the drying machine body 1 through the mud distributing machine 6, is uniformly distributed on the three layers of conveying mesh belts 11, is piled to be 80-120mm high, is dried to the water content of 22% from the uppermost layer, uniformly falls to the middle layer, has the water content of 20% and finally is sent out of the drying machine body 1 through the mud bucket elevator 5 after falling to the lower layer and the water content of 14%; externally connected with waste heat steam, firstly enters a steam buffer tank 8 through an adjusting valve 7 on an air inlet, then enters a high-temperature heat exchanger 3 arranged in the drier body 1 through the adjusting valve 7 on an air outlet, releases latent heat of vaporization to become condensate water with the temperature of 90 ℃, and then returns to a steam condensate water system; the cold water with the temperature of 33 ℃ in the cooling tower 14 is sent into a cooling heat exchanger 2 arranged in the drier body 1 and is used for cooling the air discharged by a wet film dust removal purification system 15, and the water discharged from a return port of the cooling heat exchanger 2 is returned into the cooling tower 14 through a water pump after the temperature is raised by 40 ℃; the circulating fan 4 sends hot air with latent heat temperature of 90-120 ℃ discharged from the air outlets of the cooling heat exchanger 2 and the high-temperature heat exchanger 3 into the drier body 1 at the air speed of 3m/s, and the hot air uniformly passes through the lower layer, the middle layer and the upper layer of the mesh-belt coal slime layer through the air distribution plate inside to form a humidity gradient, water vapor inside the coal slime is taken out layer by layer through steam partial pressure, the moisture is gradually humidified until the relative humidity reaches 90% and the drying temperature is 60-65 ℃ after reaching the upper layer, at the moment, the wet air contains more coal dust particles with different particle sizes, the wet air is changed into clean wet air through the wet film dust removal purification system 15, the clean wet air is condensed out through the cooling heat exchanger 2, condensed water is discharged out of the drier body 1 through a water pipe, latent heat of vaporization is released during condensation, the condensation enters the drier body 1 again through the circulating fan 4, and the circulation is repeated in the way, the coal slime drying effect is realized; an oxygen sensor 12 on the side surface of the drying machine body 1 detects the oxygen concentration in the internal space of the drying machine body 1 in real time, and when the concentration is higher than 10%, a nitrogen gas source 13 automatically fills nitrogen into the equipment, so that the oxygen content in the equipment is ensured to be lower than 10%, and the explosion possibility is inhibited.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. the ultra-low temperature drying temperature is 60-65 ℃, the safe low-temperature environment for drying the coal slime is ensured, a high-temperature drying principle is not adopted, but a humidity gradient principle is adopted for dehumidification and drying, the coal slime drying process is ensured, and the coal slime is always in the low-temperature environment;
2. the single-air-channel food steamer gradient model adopts a circulating fan to perform low-air-speed positive-pressure blast air intake, dry hot air to a positive-pressure drum of a belt dryer (a dryer body), distribute the dry hot air, perform micro negative-pressure air draft through water film dust removal (a wet film dust removal and purification system) to form a food steamer humidity gradient, utilizes the partial pressure of steam on the surface of coal slime to take away the saturated moisture on the surface of the coal slime, performs low-air-speed blast, adopts the food steamer humidity gradient principle to perform air draft layer by layer, and reduces the dust generation amount to be less than 200 g/m;
3. in the coal slime drying process, the wet film dedusting and purifying system closes air flow in a space, wet air wrapped with dust is washed once every cycle, dirty wet air is washed to become clean wet air, water is condensed out, and the coal dust concentration is stably kept at a very low level of 200g/m all the time in the coal slime drying process;
4. the explosion-proof transmission motor, the explosion-proof electrical cabinet, the top of each unit of the equipment and the design of the explosion-proof top inspection door improve the explosion-proof effect.
5. An oxygen sensor is arranged on the side surface of the equipment, and when the oxygen concentration of the drying space is higher than 10%, nitrogen is automatically filled into the equipment, so that the oxygen content in the equipment is ensured to be lower than 10%, and the possibility of explosion is inhibited.
It will be appreciated by those skilled in the art that modifications and equivalents may be made to the embodiments described above, and that various modifications, equivalents, improvements and the like may be made without departing from the spirit and scope of the invention.
Claims (4)
1. An explosion-proof coal slime steam waste heat type drier comprises a drier body (1); a sludge distributor (6) is arranged on a feed inlet of the drier body (1); a plurality of layers of conveying mesh belts (11) are arranged inside the drier body (1); a wet film dedusting and purifying system (15) is communicated and connected with the side wall of the drier body (1), and an air outlet of the wet film dedusting and purifying system (15) is communicated and connected with a cooling heat exchanger (2) arranged in the drier body (1); a mud bucket elevator (5) is arranged at the bottom of the dryer body (1) below the lowest conveying mesh belt (11); the method is characterized in that: it also includes:
the circulating fan (4), the circulating fan (4) is communicated with the cooling heat exchanger (2) and an air outlet of a high-temperature heat exchanger (3) arranged in the drier body (1);
the gas outlet of the steam buffer tank (8) is communicated with the gas inlet of the high-temperature heat exchanger (3) arranged in the drier body (1);
the water outlet of the cooling tower (14) is communicated with the water inlet of a cooling heat exchanger (2) arranged in the drying machine body (1), and the water outlet of the cooling heat exchanger (2) is communicated with the water return port of the cooling tower (14);
the nitrogen gas source (13), the nitrogen gas source (13) is communicated with the interior of the drier body (1);
the drying machine comprises an oxygen sensor (12), wherein the oxygen sensor (12) is connected to the side wall of the drying machine body (1) in a through mode, and is in electric control connection with a control valve on a nitrogen gas source (13) pipeline through a controller.
Coal slime with the water content of 26-30% enters a drier body (1) through a mud distributor (6) to form a humidity gradient, water vapor in the coal slime is brought out layer by layer through steam partial pressure and is gradually humidified, after the water vapor reaches the upper layer, the relative humidity reaches 90%, the drying temperature is 60-65 ℃, at the moment, the humid air contains more coal dust particles with different particle sizes, the humid air is changed into clean humid air through a wet film dust removal and purification system (15), condensed water is condensed out through a cooling heat exchanger (2), the dried air is discharged out of the drier body (1) through a water pipe, latent heat of vaporization is released during condensation, the clean humid air enters the drier body (1) again through a circulating fan (4), and the coal slime drying effect is achieved through the circulation and reciprocation; an oxygen sensor (12) on the side surface of the drying machine body (1) detects the oxygen concentration in the internal space of the drying machine body (1) in real time, when the concentration is higher than 10%, a nitrogen gas source (13) automatically fills nitrogen into the equipment, so that the oxygen content in the equipment is ensured to be lower than 10%, and the explosion possibility is inhibited.
2. The explosion-proof coal slime steam waste heat type drying machine as claimed in claim 1, characterized in that: and a sludge outlet of the sludge distributor (6) is provided with an explosion venting door (9).
3. The explosion-proof coal slime steam waste heat type drying machine as claimed in claim 1, characterized in that: the outer wall of the drying machine body (1) is wrapped with an insulation board (10).
4. The explosion-proof coal slime steam waste heat type drying machine as claimed in claim 1, characterized in that: and regulating valves (7) are arranged on pipelines of the air inlet and the air outlet of the steam buffer tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014048.2A CN114477704A (en) | 2022-01-07 | 2022-01-07 | Explosion-proof type coal slime steam waste heat type drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014048.2A CN114477704A (en) | 2022-01-07 | 2022-01-07 | Explosion-proof type coal slime steam waste heat type drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114477704A true CN114477704A (en) | 2022-05-13 |
Family
ID=81510576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210014048.2A Pending CN114477704A (en) | 2022-01-07 | 2022-01-07 | Explosion-proof type coal slime steam waste heat type drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114477704A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203625215U (en) * | 2013-10-08 | 2014-06-04 | 中国石油天然气集团公司 | Sludge drying system with nitrogen protecting function |
| CN210736511U (en) * | 2019-06-14 | 2020-06-12 | 同方节能装备有限公司 | Sludge drying system based on absorption type technology |
| CN112777901A (en) * | 2021-01-08 | 2021-05-11 | 可迪尔能源装备(天津)有限公司 | Sludge low-temperature belt type drying system |
| CN113493293A (en) * | 2021-07-26 | 2021-10-12 | 浙江中铅华炼环保科技有限公司 | Waste heat type closed full-circulation belt type drying system |
| CN214612130U (en) * | 2020-12-10 | 2021-11-05 | 北控城市环境资源(宜昌)有限公司 | Drying treatment device for hazardous waste sludge |
| WO2021227697A1 (en) * | 2020-05-12 | 2021-11-18 | 广东吉康环境系统科技有限公司 | Low-temperature drying device for cooling discharge sludge and recovering heat from sludge, and control method thereof |
-
2022
- 2022-01-07 CN CN202210014048.2A patent/CN114477704A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203625215U (en) * | 2013-10-08 | 2014-06-04 | 中国石油天然气集团公司 | Sludge drying system with nitrogen protecting function |
| CN210736511U (en) * | 2019-06-14 | 2020-06-12 | 同方节能装备有限公司 | Sludge drying system based on absorption type technology |
| WO2021227697A1 (en) * | 2020-05-12 | 2021-11-18 | 广东吉康环境系统科技有限公司 | Low-temperature drying device for cooling discharge sludge and recovering heat from sludge, and control method thereof |
| CN214612130U (en) * | 2020-12-10 | 2021-11-05 | 北控城市环境资源(宜昌)有限公司 | Drying treatment device for hazardous waste sludge |
| CN112777901A (en) * | 2021-01-08 | 2021-05-11 | 可迪尔能源装备(天津)有限公司 | Sludge low-temperature belt type drying system |
| CN113493293A (en) * | 2021-07-26 | 2021-10-12 | 浙江中铅华炼环保科技有限公司 | Waste heat type closed full-circulation belt type drying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110207484B (en) | Material drying evaporation gas recycling system and method | |
| CN206459472U (en) | A kind of layer-stepping high efficiency medicinal material dryer | |
| CN108426426A (en) | A kind of sludge dehumidification type multistage recuperation of heat anhydration system | |
| PT2587203E (en) | Belt dryer | |
| CN101377377A (en) | Wood drier | |
| CN206352947U (en) | A kind of Split high-efficiency heat pump dryer | |
| CN201555420U (en) | Highly effective internal heating flowing-through bed drier | |
| CN114477704A (en) | Explosion-proof type coal slime steam waste heat type drying machine | |
| CN114409216A (en) | Explosion-proof municipal sludge steam waste heat type drying machine | |
| CN113669806A (en) | Self-adaptive control method for finned tube type coating dehumidification unit | |
| CN213388303U (en) | Sludge heat pump drying device based on water circulation system | |
| CN112944872A (en) | Energy-conserving grain drier circulates | |
| CN111912211A (en) | Sludge heat pump drying system based on air treatment unit | |
| CN208927869U (en) | A kind of device for eliminating white cigarette | |
| CN201093842Y (en) | Lumber drying machine | |
| CN208187026U (en) | A kind of sludge dehumidification type multistage recuperation of heat anhydration system | |
| CN111112318A (en) | Organic contaminated soil remediation equipment | |
| CN216711885U (en) | Disc type drying machine with automatic spraying structure | |
| CN214250383U (en) | Combined heat exchange type drying device with high heat capacity | |
| CN106352691B (en) | Automatic drier | |
| CN116191228A (en) | Active dehumidifying and anti-condensation system for closed cabinet | |
| CN213147177U (en) | Drying equipment for special Chinese medicine extract | |
| CN215413042U (en) | Energy-conserving grain drier circulates | |
| CN214276356U (en) | Combined heat exchange type grain dryer with large heat capacity and high drying quality | |
| CN105910412A (en) | Internal circulating drying machine for grain drying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220513 |