CN108671576A - A kind of processing unit of liquefied ammonia exhaust gas - Google Patents
A kind of processing unit of liquefied ammonia exhaust gas Download PDFInfo
- Publication number
- CN108671576A CN108671576A CN201810296541.1A CN201810296541A CN108671576A CN 108671576 A CN108671576 A CN 108671576A CN 201810296541 A CN201810296541 A CN 201810296541A CN 108671576 A CN108671576 A CN 108671576A
- Authority
- CN
- China
- Prior art keywords
- liquefied ammonia
- pipe
- gas
- thermal energy
- heat
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/12—Separation of ammonia from gases and vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of processing unit of liquefied ammonia exhaust gas, air inlet pipe is connected on collecting hood, the thermal energy recoverer is connect with air inlet pipe, escape pipe is also associated on thermal energy recoverer, temperature-reducing medium is filled inside thermal energy recoverer, the heat-dissipating pipe of S-shaped is equipped in thermal energy recoverer, heat-dissipating pipe one end connects the air inlet pipe other end and connects escape pipe, the gas-liquid separator is connected to outlet tube end, gas outlet tube and liquefied ammonia outlet are connected on gas-liquid separator, liquefied ammonia outlet is connect with liquefied ammonia holding vessel, gas outlet tube is equipped with venthole, it is connected by air duct between the venthole and heating water tank, heating water tank is equipped with flow pipe and the flow pipe other end is connect with vaporizer.Liquid ammonia pollution can be collected and cooled down by the device, and cooling obtained liquefied ammonia is recycled to liquefied ammonia holding vessel, remaining tail gas, which can be sent to heating water tank, is converted into thermal energy to heat water for vaporizer use, and practicability is high.
Description
Technical field
The invention belongs to liquid ammonia pollution recovery technology fields, more particularly, to a kind of processing unit of liquefied ammonia exhaust gas.
Background technology
Liquefied ammonia is special product, is that liquid is presented under high pressure, low temperature in ammonia.Ammonia is former as a kind of important chemical industry
Material, to transport and storing facility, usually obtains liquid ammonia by gaseous ammonia by pressurizeing or cooling down.Liquefied ammonia is industrially applied
Extensively, there is corrosivity and readily volatilized, so its chemical accident incidence is very high, but there is no good liquefied ammonia to store at present
Device.
High purity ammonia gas is in the manufacturing process of liquid crystal display (LCD display) and compound semiconductor (LED)
The special gas used as nitride film formation gas.LED is used for the background light of general illumination and liquid crystal display, removes at present
Outside general illumination, markets of the LED for Landscape Lighting and large-screen is also constantly expanding.As Asia is to high purity ammonia gas
Expanded demand, it is imperative to enhance production capacities.
In the prior art, it in liquefied ammonia purification process, can recycle containing ammonia in the tail gas being discharged in machine, arbitrarily arrange
Air pollution can be caused by running out.
Invention content
The object of the present invention is to provide a kind of processing unit of liquefied ammonia exhaust gas, which can collect liquid ammonia pollution
And it is cooling, the liquefied ammonia that cooling will be obtained is recycled to liquefied ammonia holding vessel, remaining tail gas can send to heating water tank be converted into thermal energy from
And heat water and used for vaporizer, practicability is high.
The technical scheme is that：A kind of processing unit of liquefied ammonia exhaust gas, it includes collecting hood, thermal energy recoverer, gas
Liquid/gas separator, liquefied ammonia holding vessel, heating water tank and vaporizer, which is characterized in that the collecting hood is located at liquid ammonia pollution discharge
Locate, is connected with air inlet pipe on collecting hood, the thermal energy recoverer is connect with air inlet pipe, and outlet is also associated on thermal energy recoverer
It manages, temperature-reducing medium is filled inside thermal energy recoverer, the heat-dissipating pipe of S-shaped is equipped in thermal energy recoverer, heat-dissipating pipe one end connects air inlet
The pipe other end connects escape pipe, and the gas-liquid separator is connected to outlet tube end, and being connected with gas on gas-liquid separator goes out
Mouth pipe and liquefied ammonia outlet, liquefied ammonia outlet are connect with liquefied ammonia holding vessel, and gas outlet tube is equipped with venthole, the outlet
It is connected by air duct between hole and heating water tank, heating water tank is equipped with flow pipe and the flow pipe other end connects with vaporizer
It connects, flow pipe is equipped with water pump.
First, high-temperature tail gas being collected by collecting hood, tail gas enters thermal energy recoverer from air inlet pipe and radiates,
Water is filled in thermal energy recoverer, the tail gas after heat dissipation enters point that gas-liquid separator carries out remaining tail gas and liquefied ammonia from escape pipe
From the liquefied ammonia condensed out enters the storage of liquefied ammonia memotron from liquefied ammonia outlet, remaining tail gas enters from gas outlet tube supplies gas
Pipeline is sent to heating water tank burning and is heated to water, and the water after heating is drawn into vaporizer as vaporizer by water pump
Heat source；Heating water tank is transported to after water and high-temperature tail gas heat exchange in thermal energy recoverer to be heated；The device has liquefied ammonia
Recycling utilizes two big functions with tail gas recycle, by heat-energy recovering apparatus and gas-liquid separator by the ammoniacal liquorization in tail gas recycle with
And remaining tail gas is sent to heating water tank and is used, practicability is high, and random emission will not be caused to pollute.
Further, the heating water tank includes that combustion chamber, fuel chamber and heating room, air duct are connected to burning
Room, fuel chamber are located at combustor side, have the heat-conducting plate for transferring heat to heating room between combustion chamber and heating room.Pass through
The abundant burning conversion of tail gas that combustion gas simultaneously comes up conveying is thermal energy, while trace toxic pernicious gas in tail gas being disappeared
It removes, heat is transmitted to heating heating indoor water by heat-conducting plate, finally will be in clean exhaust emissions to air.
Further, the combustor side is equipped with exhaust pipe.
Further, be connected on the thermal energy recoverer water inlet pipe and and outlet pipe, outlet pipe be connected to heating water tank
Heating room.Water after heat exchange is delivered to heating room by water inlet pipe for supplementing water, outlet pipe.
Further, Heat Room is equipped in the gas-liquid separator, is additionally provided with compressor in Heat Room, compressor into
Mouth is connect with escape pipe, and Heat Room bottom connects liquefied ammonia outlet, and Heat Room top connects gas outlet tube.The gas-liquid separator
Ammonia cooling and pressurization are made it liquefy and flow into liquefied ammonia memotron, remaining tail gas from liquefied ammonia outlet by heat exchanger and compressor
It can be then discharged from gas outlet tube.
Further, the liquefied ammonia outlet is arc-shaped.The input end of liquefied ammonia outlet is higher than outlet end, to make liquid
Ammonia flows into liquefied ammonia holding vessel
Further, the air duct is equipped with the exhaust tube being connect with venthole and the conveying being connect with combustion chamber
Pipe, the interior wind turbine being equipped with for pumping of air duct.
Further, the vaporizer includes cylinder, and the vaporization pipeline of liquefied ammonia circulation is equipped in cylinder, is filled in cylinder
Hot water.The liquid ammonia vaporization in pipeline will be vaporized by hot water.
The advantages of processing unit of this liquefied ammonia exhaust gas, has：
1. liquid ammonia pollution can be collected and cooled down by the device, cooling obtained liquefied ammonia is recycled to liquefied ammonia storage
Tank, remaining tail gas, which can be sent to heating water tank, is converted into thermal energy to heat water for vaporizer use, and practicability is high.
2. being thermal energy by the abundant burning conversion of tail gas that combustion gas simultaneously comes up conveying, while will be micro in tail gas
Toxic and harmful gas is eliminated, and heat is transmitted to heating heating indoor water by heat-conducting plate, finally by clean exhaust emissions to sky
In gas.
Description of the drawings
Fig. 1 is the processing device structure diagram of liquefied ammonia exhaust gas.
In figure：1, air inlet pipe；2, collecting hood；3, heat-dissipating pipe；4, thermal energy recoverer；5, escape pipe；6, compressor；7, it exchanges heat
Room；8, gas-liquid separator；9, delivery pipe；10, exhaust pipe；11, liquefied ammonia holding vessel；12, liquefied ammonia outlet；13, gas outlet tube；
14, venthole；15, exhaust tube；16, wind turbine；17, fuel chamber；18, room is heated；19, combustion chamber；20, heat-conducting plate；21, water pump；
22, flow pipe；23, cylinder；24, pipeline is vaporized；25, outlet pipe；26, water inlet pipe.
Specific implementation mode
As shown in Figure 1, the technical scheme is that a kind of processing unit of liquefied ammonia exhaust gas, it includes collecting hood 2, thermal energy
Recover 4, gas-liquid separator 8, liquefied ammonia holding vessel 11, heating water tank and vaporizer, which is characterized in that the collecting hood 2
At liquid ammonia pollution discharge, air inlet pipe 1 is connected on collecting hood 2, the thermal energy recoverer 4 is connect with air inlet pipe 1, and thermal energy returns
It receives and is also associated with escape pipe 5 on device 4, temperature-reducing medium is filled inside thermal energy recoverer 4, the heat dissipation of S-shaped is equipped in thermal energy recoverer 4
Pipe 3,3 one end of heat-dissipating pipe connect 1 other end of air inlet pipe and connect escape pipe 5, and the gas-liquid separator 8 is connected to 5 end of escape pipe
Portion, gas outlet tube 13 and liquefied ammonia outlet 12 are connected on gas-liquid separator 8, and liquefied ammonia outlet 12 connects with liquefied ammonia holding vessel 11
It connects, gas outlet tube 13 is equipped with venthole 14, is connected, is added by air duct between the venthole 14 and heating water tank
Boiler is equipped with flow pipe 22 and 22 other end of flow pipe is connect with vaporizer, and flow pipe 22 is equipped with water pump 21.
The heating water tank includes that combustion chamber 19, fuel chamber 17 and heating room 18, air duct are connected to combustion chamber 19,
Fuel chamber 17 is located at 19 side of combustion chamber, has the heat conduction for transferring heat to heating room 18 between combustion chamber 19 and heating room 18
Plate 20.It is simultaneously thermal energy by the abundant burning conversion of tail gas that comes up of conveying by combustion gas, while by trace toxic in tail gas
Pernicious gas is eliminated, and heat is transmitted in heating room 18 by heat-conducting plate 20 and heats water, finally by clean exhaust emissions to sky
In gas.19 side of combustion chamber is equipped with exhaust pipe 10.
Be connected on the thermal energy recoverer 4 water inlet pipe 26 and with outlet pipe 25, outlet pipe 25 is connected to heating water tank
Heat room 18.Water after heat exchange is delivered to heating room 18 by water inlet pipe 26 for supplementing water, outlet pipe 25.
Be equipped with Heat Room 7 in the gas-liquid separator 8, be additionally provided with compressor 6 in Heat Room 7, the import of compressor 6 with
Escape pipe 5 connects, and 7 bottom of Heat Room connects liquefied ammonia outlet 12, and 7 top of Heat Room connects gas outlet tube 13.The gas-liquid point
Ammonia cooling and pressurization are made it liquefy and flow into liquefied ammonia memotron from liquefied ammonia outlet 12 by heat exchanger and compressor 6 from device 8,
Remaining tail gas can then be discharged from gas outlet tube 13.
The liquefied ammonia outlet 12 is arc-shaped.The input end of liquefied ammonia outlet 12 is higher than outlet end, to make flows of liquid ammonia
Enter liquefied ammonia holding vessel 11
The air duct is equipped with the exhaust tube 15 being connect with venthole 14 and the delivery pipe being connect with combustion chamber 19
9, the interior wind turbine 16 being equipped with for pumping of air duct.
The vaporizer includes cylinder 23, and the vaporization pipeline 24 of liquefied ammonia circulation is equipped in cylinder 23, is filled in cylinder 23
Hot water.The liquid ammonia vaporization in pipeline 24 will be vaporized by hot water.
Liquid ammonia pollution can be collected and cooled down by the device, and cooling obtained liquefied ammonia is recycled to liquefied ammonia holding vessel
11, remaining tail gas, which can be sent to heating water tank, is converted into thermal energy to heat water for vaporizer use, and practicability is high.
It is thermal energy by the abundant burning conversion of tail gas that combustion gas simultaneously comes up conveying, while has micro in tail gas
Malicious pernicious gas is eliminated, and heat is transmitted in heating room 18 by heat-conducting plate 20 and heats water, finally arrives clean exhaust emissions
In air.
First, high-temperature tail gas is collected by collecting hood 2, tail gas is dissipated from air inlet pipe 1 into thermal energy recoverer 4
Heat fills water in thermal energy recoverer 4, and the tail gas after heat dissipation enters gas-liquid separator 8 from escape pipe 5 and carries out remaining tail gas and liquefied ammonia
Separation, the liquefied ammonia condensed out enters liquefied ammonia memotron from liquefied ammonia outlet 12 and stores, remaining tail gas is from gas outlet tube 13
Heating water tank burning is sent into air duct to heat water, the water after heating is drawn into vaporizer by water pump 21 and makees
For the heat source of vaporizer；Heating water tank is transported to after water and high-temperature tail gas heat exchange in thermal energy recoverer 4 to be heated；The dress
It sets and utilizes two big functions with tail gas recycle with liquefied ammonia recycling, it will be in tail gas by heat-energy recovering apparatus and gas-liquid separator 8
Ammoniacal liquorization recycles and gives remaining tail gas to heating water tank and is used, and practicability is high, and random emission will not be caused to make
At pollution.
Claims (8)
1. a kind of processing unit of liquefied ammonia exhaust gas, it includes collecting hood, thermal energy recoverer, gas-liquid separator, liquefied ammonia holding vessel, adds
Boiler and vaporizer, which is characterized in that the collecting hood is located at liquid ammonia pollution discharge, and air inlet is connected on collecting hood
Pipe, the thermal energy recoverer connect with air inlet pipe, escape pipe are also associated on thermal energy recoverer, is filled inside thermal energy recoverer
Temperature-reducing medium, the interior heat-dissipating pipe for being equipped with S-shaped of thermal energy recoverer, heat-dissipating pipe one end connects the air inlet pipe other end and connects escape pipe, institute
The gas-liquid separator stated is connected to outlet tube end, and gas outlet tube and liquefied ammonia outlet, liquefied ammonia are connected on gas-liquid separator
Outlet is connect with liquefied ammonia holding vessel, and gas outlet tube is equipped with venthole, passes through between the venthole and heating water tank
Air duct connects, and heating water tank is equipped with flow pipe and the flow pipe other end is connect with vaporizer, and flow pipe is equipped with water pump.
2. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：The heating water tank includes
Combustion chamber, fuel chamber and heating room, air duct are connected to combustion chamber, and fuel chamber is located at combustor side, combustion chamber and heating
There is the heat-conducting plate for transferring heat to heating room between room.
3. a kind of processing unit of liquefied ammonia exhaust gas according to claim 2, it is characterised in that：The combustor side is set
There is exhaust pipe.
4. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：On the thermal energy recoverer
Be connected with water inlet pipe and and outlet pipe, outlet pipe be connected to heating water tank heating room.
5. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：In the gas-liquid separator
Equipped with Heat Room, compressor is additionally provided in Heat Room, the import of compressor is connect with escape pipe, and Heat Room bottom connection liquefied ammonia goes out
Mouth pipe, Heat Room top connect gas outlet tube.
6. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：The liquefied ammonia outlet is in
Arc.
7. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：It is set on the air duct
The delivery pipe for having the exhaust tube being connect with venthole and being connect with combustion chamber, the interior wind turbine being equipped with for pumping of air duct.
8. a kind of processing unit of liquefied ammonia exhaust gas according to claim 1, it is characterised in that：The vaporizer includes circle
Tin, it is equipped with the vaporization pipeline of liquefied ammonia circulation in cylinder, hot water is filled in cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296541.1A CN108671576A (en) | 2018-03-30 | 2018-03-30 | A kind of processing unit of liquefied ammonia exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296541.1A CN108671576A (en) | 2018-03-30 | 2018-03-30 | A kind of processing unit of liquefied ammonia exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108671576A true CN108671576A (en) | 2018-10-19 |
Family
ID=63800694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810296541.1A Pending CN108671576A (en) | 2018-03-30 | 2018-03-30 | A kind of processing unit of liquefied ammonia exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108671576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759412A (en) * | 2019-02-28 | 2019-05-17 | 北京真空电子科技有限公司 | A kind of recyclable device |
| CN112850744A (en) * | 2020-12-29 | 2021-05-28 | 海宁市英德赛电子有限公司 | High-purity ammonia waste gas treatment device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451711A (en) * | 2007-12-06 | 2009-06-10 | 北京航天石化技术装备工程公司 | Incineration process for processing ammine containing exhaust gas and system thereof |
| CN103673505A (en) * | 2013-11-15 | 2014-03-26 | 苏州金宏气体股份有限公司 | Method for recycling ammonia gas exhausted in LED production |
| CN104748507A (en) * | 2015-03-03 | 2015-07-01 | 厦门市格绿科技有限公司 | Treatment system for recovering chemical plant waste gas containing ammonia into liquid ammonia and treatment method thereof |
-
2018
- 2018-03-30 CN CN201810296541.1A patent/CN108671576A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451711A (en) * | 2007-12-06 | 2009-06-10 | 北京航天石化技术装备工程公司 | Incineration process for processing ammine containing exhaust gas and system thereof |
| CN103673505A (en) * | 2013-11-15 | 2014-03-26 | 苏州金宏气体股份有限公司 | Method for recycling ammonia gas exhausted in LED production |
| CN104748507A (en) * | 2015-03-03 | 2015-07-01 | 厦门市格绿科技有限公司 | Treatment system for recovering chemical plant waste gas containing ammonia into liquid ammonia and treatment method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 艾尼斯 P.节夫脱帕罗斯: "《工业节能技术手册》", 30 November 1990, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759412A (en) * | 2019-02-28 | 2019-05-17 | 北京真空电子科技有限公司 | A kind of recyclable device |
| CN112850744A (en) * | 2020-12-29 | 2021-05-28 | 海宁市英德赛电子有限公司 | High-purity ammonia waste gas treatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6701712B2 (en) | Method of and apparatus for producing power | |
| CN202195714U (en) | Power plant steam-water system with waste steam heat transfer system | |
| US20160290714A1 (en) | Optimized heat exchange in a co2 de-sublimation process | |
| CN107551751A (en) | Moisture and heat recovery and utilization method and its system in a kind of coal-burning power plant's discharge flue gas | |
| CN102828789A (en) | Low-voltage heating equipment of power plant | |
| CN104654815A (en) | Mosaic ceramic kiln waste heat power generation comprehensive utilization system | |
| CN108671576A (en) | A kind of processing unit of liquefied ammonia exhaust gas | |
| US20120175889A1 (en) | Gas turbine combined cycle power plant and method thereof | |
| CN103398591A (en) | Waste heat utilization system for aluminium melting furnace | |
| CN103344100A (en) | Pneumatic drier with tail gas waste heat recycling function | |
| CN104152608B (en) | Based on the blast furnace slag flushing water generating system of flash evaporation power generation and function of mechanical steam recompression | |
| ITUA20163546A1 (en) | RANKINE ORGANIC COGENERATIVE PLANT SYSTEM | |
| CN103821571A (en) | Novel thermal power generation system and working method | |
| KR101221092B1 (en) | Flue Gas Heat Source Hot and Cold Water Making System | |
| CN106499514A (en) | The association circulating power generation system of Combustion engine tail gas heat energy and LNG cold energy can be reclaimed | |
| CN207394816U (en) | A kind of flue gas waste heat recovery system of Driven by Solar Energy jet type heat pump Xun Huan | |
| CN208620663U (en) | A kind of energy saving heat pump device with efficient waste heat recovery function | |
| CN201568260U (en) | Waste heat recovery system for air compressor system | |
| CN101864926A (en) | Equipment and process for heating output crude oil by using oil field produced water heat pump | |
| CN112850744A (en) | High-purity ammonia waste gas treatment device | |
| CN206094279U (en) | Slaughterhouse is with multistage full heat recovery hot water system of refrigerating unit | |
| CN213067201U (en) | Centrifugal air compressor waste heat recovery device | |
| CN203928512U (en) | A kind of liquid jet heat pump cycle structure | |
| KR20130047567A (en) | Heat exchanger unit having waste heat withdrawal apparatus | |
| CN208620661U (en) | A kind of energy saving heat pump device with environment refrigerating function |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181019 |
|
| RJ01 | Rejection of invention patent application after publication |