CN107297125A - A kind of water-based ink prints the alcohol recovering device of baking oven - Google Patents

A kind of water-based ink prints the alcohol recovering device of baking oven Download PDF

Info

Publication number
CN107297125A
CN107297125A CN201710645328.2A CN201710645328A CN107297125A CN 107297125 A CN107297125 A CN 107297125A CN 201710645328 A CN201710645328 A CN 201710645328A CN 107297125 A CN107297125 A CN 107297125A
Authority
CN
China
Prior art keywords
water
gas
ethanol
baking oven
based ink
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
CN201710645328.2A
Other languages
Chinese (zh)
Inventor
魏毅培
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201710645328.2A priority Critical patent/CN107297125A/en
Publication of CN107297125A publication Critical patent/CN107297125A/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
    • B01D53/14Separation 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 absorption
    • B01D53/1487Removing organic compounds
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/1412Controlling the absorption process
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/1493Selection of liquid materials for use as absorbents
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10Inorganic absorbents
    • B01D2252/103Water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/704Solvents not covered by groups B01D2257/702 - B01D2257/7027
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to the alcohol recovering device that a kind of water-based ink prints baking oven, including closed container, there is mixing air cavity and gas-liquid mixture mixing chamber in the closed container;The mixing air cavity, which has, to be used to print the admission line that baking oven discharge gas is connected with water-based ink;The mixing air cavity is connected with gas-liquid mixture mixing chamber by many mixed gas discharge lines arranged side by side;The mixed gas discharge line is slender pipeline, and lower submerged is below liquid level;The gas-liquid mixture mixing chamber is connected by discharge duct with outside or aftertreatment device;The gas-liquid mixture mixing chamber is provided with water inlet and alcohol-water mixture outlet.The present invention is using water and the good compatibility of ethanol, by gas-liquid mixed, reaches the purpose for reclaiming ethanol in baking oven exhaust, and economic, energy-conservation has operability.

Description

A kind of water-based ink prints the alcohol recovering device of baking oven
Technical field
The present invention relates to ink printing baking oven emission treatment field, and in particular to a kind of water-based ink prints the ethanol of baking oven Retracting device.
Background technology
For ink printing baking oven discharge, existing solvent recovering system is directed to benzene class or esters solvent, uses elder generation Compression, then rectifying, the method such as extraction, energy consumption is big, and effect is also poor.Existing combustion method (RTO) handles VOCs methods also not It is adapted to water-based ink, because the concentration of alcohol of ink printing discharge is low, it is difficult to burn, and if in 3.3%-19% scope wine Insufficient meeting of being burnt if smart concentration can even set off an explosion.
Stage now, water-based ink will replace traditional solvent-based ink (mixed solvent based on esters), be applied to Plastic printing, still acquires a certain degree of difficulty.Because the rate of drying of water is very slow, being using the water-based ink of 100% water can not Meet the condition of ink setting in high speed printing.So aqueous ink manufacturer can add a 20%-40% left sides in ink formulations Right ethanol, is also the mixed liquor of water and ethanol moreover, needing the diluent of addition in printing process.So, ethanol plus Enter exactly to adjust rate of drying of the water-based ink in printing process with this.It is a kind of indispensable adding ingredient.Ethanol It is one kind in the VOCs for belong to national regulation requirement processing, it is impossible to directly discharge, it is necessary to handle, how ethanol is handled While, the recycling to ethanol is realized, while reducing VOC emission, becomes the technical barrier that this area is badly in need of solving.
The content of the invention
The technical problem to be solved in the invention is:The gas-liquid discharge of baking oven is printed for water-based ink, is realized to ethanol Handled and recycled, while reducing VOC emission.
The present invention takes following technical scheme:
A kind of water-based ink, which prints to have in the alcohol recovering device of baking oven, including closed container, the closed container, to be mixed Close air cavity 1 and gas-liquid mixture mixing chamber 6;The mixing air cavity 1, which has, to be used for and water-based ink printing baking oven row Put the admission line 8 of gas connection;The mixing air cavity 1 passes through many mixing arranged side by side with gas-liquid mixture mixing chamber 6 Gas outlet pipe road 7 is connected;The mixed gas discharge line 7 is slender pipeline, and lower submerged is below liquid level;The mixing Gas-liquid mixed cavity 6 is connected by discharge duct 2 with outside or aftertreatment device;Set on the gas-liquid mixture mixing chamber 6 There are water inlet 3 and alcohol-water mixture outlet 5.
Further, it is arranged in parallel using two closed containers, two closed containers have common admission line 8 and row Feed channel 2, is recycled using two closed containers of Valve controlling alternately ethanol.
Further, a closed container is at least arranged in series after closed container again, for further lifting discharge The clearance of Ethanol in Gas.
Further, at least it is being arranged in series an ethanol absorption tower water circulation spray after the closed container of end Tower, the clearance for further lifting ethanol in discharge gas.
Further, ethanol content on-line detector 4, the ethanol are additionally provided with the gas-liquid mixture mixing chamber 6 Content on-line detector 4 is connected with control system signal, the control system and the valve of each gas-liquid channel on closed container Signal is connected.
Further, at least it is being arranged in series an ethanol absorption tower water circulation spray after the closed container of end Tower, the clearance for further lifting ethanol in discharge gas.The ethanol absorption tower water circulation spray equipment includes first To N grades of ethanol absorption towers, ethanol absorption towers at different levels are equipped with independent circulation water sprinkler system;N-1 grades of ethanol absorption towers Top and the gas passage being communicated with the middle part of N grades of ethanol absorption towers;The bottom on N level ethanol absorption tower and N-1 grades of ethanol The top on absorption tower have together with fluid passage, the fluid passage is provided with backflow water pump and control valve;Ethanol at different levels Ethanol content on-line computing model 4 is provided with absorption tower.
The beneficial effects of the present invention are:
1) using water and the good compatibility of ethanol, by gas-liquid mixed, the purpose for reclaiming ethanol in baking oven exhaust is reached, Use two closed containers in parallel, alternation, the continuity that system can be kept to work.
2) using the closed container that two or more are connected, the ratio that ethanol is reclaimed, reduction VOC rows are further ensured that Put.
3) it is follow-up to continue to carry out circulated sprinkling using ethanol recovery tower, the purity that ethanol is reclaimed is improved, while improving VOCs The effect of removal.
4) using the on-line checking of alcoholic strength measuring instrument, using gate-controlled switch, the ethanol water mixed liquid of prescribed concentration is obtained.
5) clean air can be discharged directly, also the recoverable formation circulatory system.
6) ethanol recovery scheme of the present invention, economic, energy-conservation, has operability.
Brief description of the drawings
Fig. 1 is the structural representation of the single closed container of alcohol recovering device of water-based ink printing baking oven of the present invention.
Fig. 2 is that water-based ink of the present invention prints the signal that two closed containers of alcohol recovering device of baking oven are connected in parallel Figure.
Fig. 3 be with closed container or its combine back-connected ethanol absorption tower water circulation spray column and combine, be used for into one Step removes the ethanol in discharge gas, reduces VOC emission.
In figure, 1. mixing air cavitys, 2. discharge ducts, 3. water inlets, 4. ethanol content on-line detectors, 5. alcohol water are mixed Close liquid outlet, 6. gas-liquid mixture mixing chambers, 7. mixed gas discharge lines, 8. admission lines.
Embodiment
In intaglio printing, adagio printing can give off alcohols solvent (mainly ethanol) when being printed using water-based ink, by VOCs is fallen within alcohols solvent, it is necessary to be handled.And recycle blank of the alcohols solvent now also in printing industry Region.The present invention program is to utilize alcohols solvent, particularly the unlimited ratio compatibility of second alcohol and water the characteristics of, utilize mixing empty Gas is directly mixed with water in ethanol tourie, and we will obtain the mixed liquor of more than 50% alcohol water after the regular hour, and this The mixed liquor of sample can be used for the diluent of water-based ink.Reached by such mode and recycle ethanol, while subtract again The purpose of VOCs discharges is lacked.
In addition, a certain proportion of ethanol-air (3.3%-19%) can be produced in the case where encountering naked light, high heat energy it is quick-fried It is fried.Directly discharge or other processing modes also has serious potential safety hazard, so, the recycling of ethanol makes concerning ink Safety problem.
The implementation of the present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment one:
Referring to Fig. 1, a kind of water-based ink prints the alcohol recovering device of baking oven, including closed container, the closed container It is interior that there is mixing air cavity 1 and gas-liquid mixture mixing chamber 6;The mixing air cavity 1, which has, to be used to print with water-based ink The admission line 8 of brush baking oven discharge gas connection;The mixing air cavity 1 and gas-liquid mixture mixing chamber 6 by many simultaneously The mixed gas discharge line 7 of row is connected;The mixed gas discharge line 7 is slender pipeline, and lower submerged is below liquid level; The gas-liquid mixture mixing chamber 6 is connected by discharge duct 2 with outside or aftertreatment device;The gas-liquid mixture hybrid chamber Body 6 is provided with water inlet 3 and alcohol-water mixture outlet 5.
Referring to Fig. 1, ethanol content on-line detector 4, the ethanol content are additionally provided with the gas-liquid mixture mixing chamber 6 On-line detector 4 is connected with control system signal, the control system and the valve signal of each gas-liquid channel on closed container Connection.
Embodiment two:
Referring to Fig. 2, on the basis of embodiment one, it is arranged in parallel using two closed containers, two closed containers have Common admission line 8 and discharge duct 2, is recycled using two closed containers of Valve controlling alternately ethanol.
Embodiment three:
On the basis of embodiment two, then a closed container is arranged in series, for further lifting second in discharge gas Do not shown in the clearance of alcohol, accompanying drawing.
Example IV:
Referring to Fig. 3, on the basis of embodiment two or three, at least a second is being arranged in series after the closed container of end Alcohol absorption tower water circulation spray column, the clearance for further lifting ethanol in discharge gas.Ethanol absorption tower water is followed Ring spray shower device includes first to N grades ethanol absorption towers, and ethanol absorption towers at different levels are equipped with independent circulation water sprinkler system; The top on N-1 grades of ethanol absorption towers and the gas passage being communicated with the middle part of N grades of ethanol absorption towers;N level ethanol absorption tower Bottom and N-1 grade ethanol absorption towers top have together with fluid passage, the fluid passage provided with flow back water pump and Control valve;Ethanol content on-line computing model 4 is provided with ethanol absorption towers at different levels.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improve belong to claimed Within the scope of.

Claims (6)

1. a kind of water-based ink prints the alcohol recovering device of baking oven, it is characterised in that:
Including closed container, there is mixing air cavity (1) and gas-liquid mixture mixing chamber (6) in the closed container;
The mixing air cavity (1), which has, to be used to print the admission line (8) that baking oven discharge gas is connected with water-based ink;
The mixing air cavity (1) passes through many mixed gas discharge lines (7) arranged side by side with gas-liquid mixture mixing chamber (6) Connection;The mixed gas discharge line (7) is slender pipeline, and lower submerged is below liquid level;
The gas-liquid mixture mixing chamber (6) is connected by discharge duct (2) with outside or aftertreatment device;
The gas-liquid mixture mixing chamber (6) is provided with water inlet (3) and alcohol-water mixture outlet (5).
2. water-based ink as claimed in claim 1 prints the alcohol recovering device of baking oven, it is characterised in that:It is closed using two Container is arranged in parallel, and two closed containers have common admission line (8) and discharge duct (2), using Valve controlling two Closed container alternately ethanol is recycled.
3. water-based ink as claimed in claim 2 prints the alcohol recovering device of baking oven, it is characterised in that:After closed container A closed container is at least arranged in series again, the clearance for further lifting ethanol in discharge gas.
4. water-based ink as claimed in claim 2 or claim 3 prints the alcohol recovering device of baking oven, it is characterised in that:End it is close Close after container and be at least arranged in series an ethanol absorption tower water circulation spray column, for further lifting second in discharge gas The clearance of alcohol.
5. water-based ink as claimed in claim 2 or claim 3 prints the alcohol recovering device of baking oven, it is characterised in that:The mixing Ethanol content on-line detector (4), the ethanol content on-line detector (4) and control are additionally provided with gas-liquid mixed cavity (6) System signal is connected, and the control system is connected with the valve signal of each gas-liquid channel on closed container.
6. water-based ink as claimed in claim 4 prints the alcohol recovering device of baking oven, it is characterised in that:The closed appearance of end An ethanol absorption tower water circulation spray column at least is being arranged in series after device, for further lifting ethanol in discharge gas Clearance.The ethanol absorption tower water circulation spray equipment includes first to N grades ethanol absorption towers, and ethanol absorption towers at different levels are equal Provided with independent circulation water sprinkler system;It is communicated with the middle part of the top on N-1 grades of ethanol absorption towers and N grades of ethanol absorption towers Gas passage;The top on the bottom on N level ethanol absorption tower and N-1 grade ethanol absorption towers with together with fluid passage, it is described Fluid passage is provided with backflow water pump and control valve;Ethanol content on-line computing model (4) is provided with ethanol absorption towers at different levels.
CN201710645328.2A 2017-08-01 2017-08-01 A kind of water-based ink prints the alcohol recovering device of baking oven Pending CN107297125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710645328.2A CN107297125A (en) 2017-08-01 2017-08-01 A kind of water-based ink prints the alcohol recovering device of baking oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710645328.2A CN107297125A (en) 2017-08-01 2017-08-01 A kind of water-based ink prints the alcohol recovering device of baking oven

Publications (1)

Publication Number Publication Date
CN107297125A true CN107297125A (en) 2017-10-27

Family

ID=60133204

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710645328.2A Pending CN107297125A (en) 2017-08-01 2017-08-01 A kind of water-based ink prints the alcohol recovering device of baking oven

Country Status (1)

Country Link
CN (1) CN107297125A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110314498A (en) * 2019-04-30 2019-10-11 孟州市厚源生物科技有限公司 A kind of alcoholic fermentation carbon dioxide in gas, alcohol recovering device
CN112473323A (en) * 2020-11-06 2021-03-12 中物院成都科学技术发展中心 Industrial acetone tail gas separation and recovery device

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101810982A (en) * 2009-12-25 2010-08-25 青岛科技大学 Ethanol-containing waste-gas treatment process flow
CN201701843U (en) * 2010-05-31 2011-01-12 西安昊芯自动化工程有限公司 Blowing-bath type dust collection desulfurizer
CN102319534A (en) * 2011-08-25 2012-01-18 江西金达莱环保研发中心有限公司 Method for exhaust gas purification
CN202610217U (en) * 2012-05-04 2012-12-19 泸州品创科技有限公司 Wine steam recycling device
CN203244879U (en) * 2013-04-20 2013-10-23 宁波海曙信满贸易有限公司 Waste gas absorption tower
CN203303822U (en) * 2013-01-18 2013-11-27 烟台东洁环保机械工程有限公司 Recovery device of ethanol tail gas
CN203342636U (en) * 2013-04-16 2013-12-18 江苏弘鼎环保设备科技有限公司 Desulfurization waste gas treatment device
CN204816203U (en) * 2015-08-16 2015-12-02 王伟珍 A acid mist purification tower for handling acid gas
CN105617957A (en) * 2014-10-27 2016-06-01 中国科学院大连化学物理研究所 Method for strengthening mixing and reaction of fluids in micro-reactor
CN205858457U (en) * 2016-06-13 2017-01-04 重庆中宝生物制药有限公司 Ethanol circulation of tail gas apparatus for recovering

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101810982A (en) * 2009-12-25 2010-08-25 青岛科技大学 Ethanol-containing waste-gas treatment process flow
CN201701843U (en) * 2010-05-31 2011-01-12 西安昊芯自动化工程有限公司 Blowing-bath type dust collection desulfurizer
CN102319534A (en) * 2011-08-25 2012-01-18 江西金达莱环保研发中心有限公司 Method for exhaust gas purification
CN202610217U (en) * 2012-05-04 2012-12-19 泸州品创科技有限公司 Wine steam recycling device
CN203303822U (en) * 2013-01-18 2013-11-27 烟台东洁环保机械工程有限公司 Recovery device of ethanol tail gas
CN203342636U (en) * 2013-04-16 2013-12-18 江苏弘鼎环保设备科技有限公司 Desulfurization waste gas treatment device
CN203244879U (en) * 2013-04-20 2013-10-23 宁波海曙信满贸易有限公司 Waste gas absorption tower
CN105617957A (en) * 2014-10-27 2016-06-01 中国科学院大连化学物理研究所 Method for strengthening mixing and reaction of fluids in micro-reactor
CN204816203U (en) * 2015-08-16 2015-12-02 王伟珍 A acid mist purification tower for handling acid gas
CN205858457U (en) * 2016-06-13 2017-01-04 重庆中宝生物制药有限公司 Ethanol circulation of tail gas apparatus for recovering

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110314498A (en) * 2019-04-30 2019-10-11 孟州市厚源生物科技有限公司 A kind of alcoholic fermentation carbon dioxide in gas, alcohol recovering device
CN112473323A (en) * 2020-11-06 2021-03-12 中物院成都科学技术发展中心 Industrial acetone tail gas separation and recovery device

Similar Documents

Publication Publication Date Title
CN102228776A (en) Method and apparatus for removing sulfur dioxide from sulfuric acid industrial tail gas, and for recovering sulfuric acid
CN101569823B (en) Method for recycling hydrochloric acid pickling waste gas
CN107297125A (en) A kind of water-based ink prints the alcohol recovering device of baking oven
CN105776394A (en) Coal gas deamination and residual ammonia liquor vacuum distillation integrated production method and system
CN204093277U (en) Trimethylamine waste gas pollution control and treatment system
CN106039916B (en) The system for reducing non-methane total hydrocarbons waste gas content in polymerisation in solution rubber process
CN104495757B (en) SO in sulfuric acid apparatus3absorb low-temperature heat energy recovery system
CN107398145A (en) A kind of ethanol recovery of water-based ink printing baking oven and VOC emission-reducing systems and method
CN109647160A (en) Method for treating tail gas of ammonium sulfate mother liquor circulation tank
CN207286993U (en) Coke-oven plant's vent gas washing system
CN204034517U (en) A kind of waste gas purification apparatus for making fish meal
CN207102129U (en) A kind of dust treatment combination tower
CN106039970A (en) Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof
CN207203805U (en) A kind of spray washing system of stack gases
CN206810051U (en) Desulfurization wastewater efficient concentration evaporates Zero emission device
CN205461675U (en) Methyl alcohol loading waste gas recovery device
CN212523574U (en) Delayed coking tail gas recovery device
CN204973537U (en) Exhaust purification processing apparatus that inner loop liquid was recycled
CN208532289U (en) A kind of wastewater from chemical industry stripping processing unit
CN208136128U (en) A kind of calcium propionate production recovery tower
CN206262126U (en) It is a kind of to improve heat recovery rate and reduce the flash system of waste gas discharge
CN207076319U (en) A kind of condensable particulate matter removal device
CN1050149C (en) High-efficiency method for distillation of raw rosin and its apparatus
CN105344208A (en) Urea synthetic gas absorption recirculation apparatus and recirculation method thereof
CN205288019U (en) Urea synthesis gas absorbs recirculation system

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: 20171027

RJ01 Rejection of invention patent application after publication