CN106823779A - A kind of heating pipe inner air-cleaning agent - Google Patents

A kind of heating pipe inner air-cleaning agent Download PDF

Info

Publication number
CN106823779A
CN106823779A CN201611216502.3A CN201611216502A CN106823779A CN 106823779 A CN106823779 A CN 106823779A CN 201611216502 A CN201611216502 A CN 201611216502A CN 106823779 A CN106823779 A CN 106823779A
Authority
CN
China
Prior art keywords
air
heating pipe
pipe inner
cleaning agent
inner air
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
Application number
CN201611216502.3A
Other languages
Chinese (zh)
Inventor
李伟
李长安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Yuantong Heating Technology Co Ltd
Original Assignee
Anhui Yuantong Heating Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Yuantong Heating Technology Co Ltd filed Critical Anhui Yuantong Heating Technology Co Ltd
Priority to CN201611216502.3A priority Critical patent/CN106823779A/en
Publication of CN106823779A publication Critical patent/CN106823779A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/01Deodorant compositions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/20Organic adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/204Alkaline earth metals
    • B01D2255/2045Calcium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/206Rare earth metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/70Non-metallic catalysts, additives or dopants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/91Bacteria; Microorganisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air

Abstract

A kind of heating pipe inner air-cleaning agent, is made up of the component of following parts by weight:25 parts of nano titanium oxide, 5 parts of modified RE, 20 parts of adhesive agent, 5 parts of Conductive graphite cream, 5 parts of nucleator, 6 parts of calcium activated, 0.2 part of Tea Polyphenols;Instant component prepares reasonable, can eliminate all kinds of harmful components and peculiar smell in air, and carries out natural sterilization sterilization to air, and the clearance to the contaminants of chemical origin in air reaches more than 98%.

Description

A kind of heating pipe inner air-cleaning agent
Technical field
The present invention relates to technical field of air purification, and in particular to a kind of heating pipe inner air-cleaning agent.
Background technology
Heating and ventilating pipeline sends airduct, central air-conditioning ventilation duct, industrial supply and exhaust ventilation duct, environment friendly system back to as cleaning system The common components of suction airduct, but current heating and ventilating pipeline does not possess good air-filtering ability.And with for many years to sky The continuous accumulation of the various harmful substances of discharge, air quality has been subjected to serious pollution, particulate matter in air and various The life security that toxic and harmful pollutant gives people brings serious threat.It is no matter indoor or outdoor, deposited in air Biological pollutant (bacterium, virus, fungal spore, dust, dust mite), smell pollution thing, contaminants of chemical origin (second-hand-cigarette, The hazardous air pollutants of formaldehyde, benzene homologues, factory and vehicle discharge), airborne suspended particle pollutant (PM2.5) etc..Institute Interior is entered directly into the contaminated air by heating and ventilating pipeline, human body can be had undesirable effect.
The content of the invention
The technical problems to be solved by the invention are to improve a kind of heating pipe inner air-cleaning agent, with filtering, kill Bacterium sterilization, deodorization functions, improve IAQ.
The technical problems to be solved by the invention are realized using following technical scheme:
A kind of heating pipe inner air-cleaning agent, is made up of the component of following parts by weight:
The preparation method of the air purifying preparation is:By nano titanium oxide, modified RE and calcium activated in mixer Mix, be subsequently adding adhesive agent, Conductive graphite cream, nucleator and Tea Polyphenols, be warming up to 65-68 DEG C, be thoroughly mixed, formed Air purifying preparation.
Described nucleator is monocyclic carboxylate nucleator, specially benzoic acid sodium salt, benzoic acid aluminium salt, diphenyl acetic acid The mixture of one or more in sodium salt or hexahydro-phthalic acid.By adding nucleator, good dispersion between material, Compatibility is good, improves filtering adsorption effect.
The adhesive agent is regenerating and modifying waste oil, with stronger adsorption function, is had well to the particulate matter in air Filtering adsorption effect.
Tea Polyphenols (TP) is the polyphenol compound of the separating-purifying from tealeaves particularly green tea, is the chief active of tealeaves Composition, with extensive pharmacological action.Research has shown that Tea Polyphenols can suppress the GTF enzymes of bacterium, with calcium activated and nanometer titanium dioxide Titanium is coordinated, and with catalysis, can play sterilized to air sterillization.
The modified RE is modified RE oxide, primarily serves catalytic action.
The processing method of the regenerating and modifying waste oil is as follows:
(1) using the waste oil produced in food and drink as raw material, vessel in heating to 70-90 DEG C of state is put into, keeps 30 Minute or so, part moisture evaporation is fallen, and the scum on surface is filtered off;
(2) in the waste oil input reactor in step (1), will open agitating function, mixing speed control 260~ 280 revs/min, continuously stir 40 minutes or so, stop stirring, input atlapulgite is decolourized, atlapulgite and waste oil Weight ratio be 2~6: 100;65-68 DEG C is maintained the temperature at, is continuously stirred 12 hours, carried out when temperature is down to 40 DEG C or so Filtration treatment, collects liquid fat stand-by;
Used again after the semisolid atlapulgite recycling that above-mentioned filtering is produced;
(3) liquid fat is put into reactor, is warming up to 65-75 DEG C, put into formic acid, open stirring, continuously stir 30 points Clock, then adds ethanol from the head tank of reactor, and unlatching is uniformly mixed;
The inventory of formic acid is the 3.5% of waste oil gross weight, the inventory of ethanol and the mol ratio of waste oil inventory 1.1:0.6;
(4) steam valve is opened, reactor is heated up, controlling reaction temperature is kept for 80 minutes at 80~120 DEG C, It is then turned on reactor to be stirred, mixing speed is controlled at 260~280 revs/min, continuously stirs 60 minutes, terminating reaction;
(5) after reaction terminates, stratification is carried out to reactant, takes upper strata oil separator, by upper strata oil separator transfer Into fractionation kettle, kettle temperature is risen, at 70 DEG C, normal pressure reclaims the complete ethanol of unreacted to control temperature;
(6) after ethanol is reclaimed and terminated, fractionation kettle is heated up to 90 DEG C or so, is incubated 6 hours, then stand 30 hours, divided and go Lower floor's waste acid water, upper strata crude product is transferred in autoclave rectifying column, controls 120~150 DEG C of tower top temperature, vacuum pressure 1200 ~1500Pa, reflux ratio 1:1 fractionation, obtains regenerating waste oil crude product;
(7) regeneration waste oil crude product is first neutralized with alkali lye, then is washed to neutrality, divided after removing water, oil reservoir carries out vapor Distillation, remaining product is evaporated in vacuo, and removes low-boiling-point substance and water, then obtain final product regenerating and modifying waste oil through press filtration.
The application method of above-mentioned air purifying preparation is:Concrete dynamic modulus foam metal plate is immersed in air purifying preparation, then Drying is taken out, the inlet and outlet for being positioned over heating pipe goes out, you can reach the effect of purify air.
The beneficial effects of the invention are as follows:It is reasonable that instant component is prepared, can eliminate all kinds of harmful components in air and Peculiar smell, and natural sterilization sterilization is carried out to air, the clearance to the contaminants of chemical origin in air reaches more than 98%.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
A kind of heating pipe inner air-cleaning agent, is made up of the component of following parts by weight:
The preparation method of the air purifying preparation is:By nano titanium oxide, modified RE and calcium activated in mixer Mix, be subsequently adding adhesive agent, Conductive graphite cream, nucleator and Tea Polyphenols, be warming up to 65-68 DEG C, be thoroughly mixed, formed Air purifying preparation.
The adhesive agent is regenerating and modifying waste oil, with stronger adsorption function, is had well to the particulate matter in air Filtering adsorption effect.
Tea Polyphenols (TP) is the polyphenol compound of the separating-purifying from tealeaves particularly green tea, is the chief active of tealeaves Composition, with extensive pharmacological action.Research has shown that Tea Polyphenols can suppress the GTF enzymes of bacterium, with calcium activated and nanometer titanium dioxide Titanium is coordinated, and with catalysis, can play sterilized to air sterillization.
The modified RE is modified RE oxide, primarily serves catalytic action.
The processing method of the regenerating and modifying waste oil is as follows:
(1) using the waste oil produced in food and drink as raw material, vessel in heating to 70-90 DEG C of state is put into, keeps 30 Minute or so, part moisture evaporation is fallen, and the scum on surface is filtered off;
(2) in the waste oil input reactor in step (1), will open agitating function, mixing speed control 260~ 280 revs/min, continuously stir 40 minutes or so, stop stirring, input atlapulgite is decolourized, atlapulgite and waste oil Weight ratio be 2~6: 100;65-68 DEG C is maintained the temperature at, is continuously stirred 12 hours, carried out when temperature is down to 40 DEG C or so Filtration treatment, collects liquid fat stand-by;
Used again after the semisolid atlapulgite recycling that above-mentioned filtering is produced;
(3) liquid fat is put into reactor, is warming up to 65-75 DEG C, put into formic acid, open stirring, continuously stir 30 points Clock, then adds ethanol from the head tank of reactor, and unlatching is uniformly mixed;
The inventory of formic acid is the 3.5% of waste oil gross weight, the inventory of ethanol and the mol ratio of waste oil inventory 1.1:0.6;
(4) steam valve is opened, reactor is heated up, controlling reaction temperature is kept for 80 minutes at 80~120 DEG C, It is then turned on reactor to be stirred, mixing speed is controlled at 260~280 revs/min, continuously stirs 60 minutes, terminating reaction;
(5) after reaction terminates, stratification is carried out to reactant, takes upper strata oil separator, by upper strata oil separator transfer Into fractionation kettle, kettle temperature is risen, at 70 DEG C, normal pressure reclaims the complete ethanol of unreacted to control temperature;
(6) after ethanol is reclaimed and terminated, fractionation kettle is heated up to 90 DEG C or so, is incubated 6 hours, then stand 30 hours, divided and go Lower floor's waste acid water, upper strata crude product is transferred in autoclave rectifying column, controls 120~150 DEG C of tower top temperature, vacuum pressure 1200 ~1500Pa, reflux ratio 1:1 fractionation, obtains regenerating waste oil crude product;
(7) regeneration waste oil crude product is first neutralized with alkali lye, then is washed to neutrality, divided after removing water, oil reservoir carries out vapor Distillation, remaining product is evaporated in vacuo, and removes low-boiling-point substance and water, then obtain final product regenerating and modifying waste oil through press filtration.
The application method of above-mentioned air purifying preparation is:Concrete dynamic modulus foam metal plate is immersed in air purifying preparation, then Drying is taken out, the inlet and outlet for being positioned over heating pipe goes out, you can reach the effect of purify air.
Embodiment 2
A kind of heating pipe inner air-cleaning agent, is made up of the component of following parts by weight:
The preparation method of the air purifying preparation is:By nano titanium oxide, modified RE and calcium activated in mixer Mix, be subsequently adding adhesive agent, Conductive graphite cream, nucleator and Tea Polyphenols, be warming up to 65-68 DEG C, be thoroughly mixed, formed Air purifying preparation.
The adhesive agent is regenerating and modifying waste oil, with stronger adsorption function, is had well to the particulate matter in air Filtering adsorption effect.
Tea Polyphenols (TP) is the polyphenol compound of the separating-purifying from tealeaves particularly green tea, is the chief active of tealeaves Composition, with extensive pharmacological action.Research has shown that Tea Polyphenols can suppress the GTF enzymes of bacterium, with calcium activated and nanometer titanium dioxide Titanium is coordinated, and with catalysis, can play sterilized to air sterillization.
The modified RE is modified RE oxide, primarily serves catalytic action.
The processing method of the regenerating and modifying waste oil is as follows:
(1) using the waste oil produced in food and drink as raw material, vessel in heating to 70-90 DEG C of state is put into, keeps 30 Minute or so, part moisture evaporation is fallen, and the scum on surface is filtered off;
(2) in the waste oil input reactor in step (1), will open agitating function, mixing speed control 260~ 280 revs/min, continuously stir 40 minutes or so, stop stirring, input atlapulgite is decolourized, atlapulgite and waste oil Weight ratio be 2~6: 100;65-68 DEG C is maintained the temperature at, is continuously stirred 12 hours, carried out when temperature is down to 40 DEG C or so Filtration treatment, collects liquid fat stand-by;
Used again after the semisolid atlapulgite recycling that above-mentioned filtering is produced;
(3) liquid fat is put into reactor, is warming up to 65-75 DEG C, put into formic acid, open stirring, continuously stir 30 points Clock, then adds ethanol from the head tank of reactor, and unlatching is uniformly mixed;
The inventory of formic acid is the 3.5% of waste oil gross weight, the inventory of ethanol and the mol ratio of waste oil inventory 1.1:0.6;
(4) steam valve is opened, reactor is heated up, controlling reaction temperature is kept for 80 minutes at 80~120 DEG C, It is then turned on reactor to be stirred, mixing speed is controlled at 260~280 revs/min, continuously stirs 60 minutes, terminating reaction;
(5) after reaction terminates, stratification is carried out to reactant, takes upper strata oil separator, by upper strata oil separator transfer Into fractionation kettle, kettle temperature is risen, at 70 DEG C, normal pressure reclaims the complete ethanol of unreacted to control temperature;
(6) after ethanol is reclaimed and terminated, fractionation kettle is heated up to 90 DEG C or so, is incubated 6 hours, then stand 30 hours, divided and go Lower floor's waste acid water, upper strata crude product is transferred in autoclave rectifying column, controls 120~150 DEG C of tower top temperature, vacuum pressure 1200 ~1500Pa, reflux ratio 1:1 fractionation, obtains regenerating waste oil crude product;
(7) regeneration waste oil crude product is first neutralized with alkali lye, then is washed to neutrality, divided after removing water, oil reservoir carries out vapor Distillation, remaining product is evaporated in vacuo, and removes low-boiling-point substance and water, then obtain final product regenerating and modifying waste oil through press filtration.
The application method of above-mentioned air purifying preparation is:Concrete dynamic modulus foam metal plate is immersed in air purifying preparation, then Drying is taken out, the inlet and outlet for being positioned over heating pipe goes out, you can reach the effect of purify air.
This air purifying preparation can play catalytic action, eliminate all kinds of harmful components and peculiar smell in air, and to sky Gas carries out natural sterilization sterilization, and the clearance to the contaminants of chemical origin in air reaches more than 98%, to the filtering effect of PM2.5 Rate up to more than 95%, to PM0.3 filter efficiencies up to more than 80%, concentration of hydrogen sulfide drops to 0ppm by 500ppm, remove Rate 100%.So that being purified treatment by the contaminated air of heating and ventilating pipeline.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its Equivalent thereof.

Claims (5)

1. a kind of heating pipe inner air-cleaning agent, it is characterised in that be made up of the component of following parts by weight:
2. a kind of heating pipe inner air-cleaning agent according to claim 1, it is characterised in that described nucleator is single In ring carboxylate nucleator, specially benzoic acid sodium salt, benzoic acid aluminium salt, diphenyl acetic acid sodium salt or hexahydro-phthalic acid The mixture of one or more.
3. a kind of heating pipe inner air-cleaning agent according to claim 1, it is characterised in that the adhesive agent is regeneration Modified swill-cooked dirty oil.
4. a kind of heating pipe inner air-cleaning agent according to claim 1, it is characterised in that the modified RE is to change Property rare earth oxide.
5. a kind of method for preparing air purifying preparation described in claim any one of 1-4, it is characterised in that:By nanometer titanium dioxide Titanium, modified RE and calcium activated are mixed in mixer, are subsequently adding adhesive agent, Conductive graphite cream, nucleator and Tea Polyphenols, are risen Temperature is thoroughly mixed to 65-68 DEG C, forms air purifying preparation.
CN201611216502.3A 2016-12-26 2016-12-26 A kind of heating pipe inner air-cleaning agent Pending CN106823779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611216502.3A CN106823779A (en) 2016-12-26 2016-12-26 A kind of heating pipe inner air-cleaning agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611216502.3A CN106823779A (en) 2016-12-26 2016-12-26 A kind of heating pipe inner air-cleaning agent

Publications (1)

Publication Number Publication Date
CN106823779A true CN106823779A (en) 2017-06-13

Family

ID=59136486

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611216502.3A Pending CN106823779A (en) 2016-12-26 2016-12-26 A kind of heating pipe inner air-cleaning agent

Country Status (1)

Country Link
CN (1) CN106823779A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203928156U (en) * 2014-06-24 2014-11-05 马元海 The air-purifying module of heating and ventilating pipeline with porous metal carrier nano coating
CN104667646A (en) * 2015-01-23 2015-06-03 北京博源恒升高科技有限公司 Waste gas dust removing method and dust removing agent

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203928156U (en) * 2014-06-24 2014-11-05 马元海 The air-purifying module of heating and ventilating pipeline with porous metal carrier nano coating
CN104667646A (en) * 2015-01-23 2015-06-03 北京博源恒升高科技有限公司 Waste gas dust removing method and dust removing agent

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
刘志坚: "《聚合物成核剂》", 28 February 2012, 中国石化出版社 *
季祥等: "《生物质能源及废物利用新技术》", 31 December 2012, 吉林大学出版社 *
张爱联: "《生物化学与分子生物学实验教程》", 31 January 2009, 中国农业大学出版社 *
汪用文: "《中国茶产品加工》", 30 June 2011, 上海科学技术出版社 *

Similar Documents

Publication Publication Date Title
CN102526781B (en) Compound biological enzyme deodorant and preparation method thereof
CN103752268B (en) The filter core preparation method and application of heavy metal and arsenic, fluorine in absorption drinking water
CN206488395U (en) A kind of multi-layer air clarifier
CN101502748B (en) Deodouring agent for removing formaldehyde
CN109529617A (en) A kind of photocatalyst is except formaldehyde agent and preparation method thereof
CN102151562B (en) Method for preparing carbon fiber cloth material capable of effectively purifying air
CN104456755A (en) Bi-power combined type air purifier
CN105251468B (en) The preparation method of toxic gas adsorbent in a kind of environment-friendly type room
CN104874286A (en) Immobilized enzyme formaldehyde-eliminating environment-friendly laminating agent
CN108452673A (en) A kind of preparation method of antibacterial type air purifying preparation
CN101310833B (en) Harmful gas purifier
CN106823779A (en) A kind of heating pipe inner air-cleaning agent
CN202762228U (en) Air purifier
CN106731267A (en) A kind of heating pipe method for purifying indoor air
CN106669304A (en) Efficient air filtering module used on heating pipeline
CN100483036C (en) Multifunctional biological air purifier
CN206279049U (en) A kind of multi-stage sewage treatment device with recycling function
CN205361055U (en) Food and beverage oil smoke biological purification equipment
KR101138500B1 (en) Food Waste Treatment Apparatus having Dehumidification Device
CN204313403U (en) A kind of double dynamical Combined air clearing machine
CN1865790B (en) Biochemical film for air conditioner and its production method
CN207328066U (en) Air conditioning for automobiles removes musty air cleaning unit
CN209596871U (en) A kind of exhaust gas absorption device of acylation reaction
CN220703287U (en) Landfill leachate purifier
CN202011840U (en) Processor for kitchen waste

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20170613