EP0028025A1 - Procédé et dispositif pour la production de gouttes de liquide microfines - Google Patents

Procédé et dispositif pour la production de gouttes de liquide microfines Download PDF

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Publication number
EP0028025A1
EP0028025A1 EP80106544A EP80106544A EP0028025A1 EP 0028025 A1 EP0028025 A1 EP 0028025A1 EP 80106544 A EP80106544 A EP 80106544A EP 80106544 A EP80106544 A EP 80106544A EP 0028025 A1 EP0028025 A1 EP 0028025A1
Authority
EP
European Patent Office
Prior art keywords
space
gas
transport
liquid
atomizing
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.)
Granted
Application number
EP80106544A
Other languages
German (de)
English (en)
Other versions
EP0028025B1 (fr
Inventor
Karl Folke Peterson
Kurt L. Skoog
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.)
Dala Invest AB
Original Assignee
Dala Invest AB
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
Priority claimed from SE7908863A external-priority patent/SE7908863L/xx
Priority claimed from SE7908865A external-priority patent/SE7908865L/
Priority claimed from SE7908864A external-priority patent/SE7908864L/xx
Application filed by Dala Invest AB filed Critical Dala Invest AB
Priority to AT80106544T priority Critical patent/ATE3906T1/de
Publication of EP0028025A1 publication Critical patent/EP0028025A1/fr
Application granted granted Critical
Publication of EP0028025B1 publication Critical patent/EP0028025B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0466—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/105—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet at least one of the fluids being submitted to a swirling motion

Definitions

  • the invention relates to a method and a device for producing micro liquid droplets.
  • a liquid is normally pressed through a specially designed atomizing nozzle, which causes the liquid to be sprayed apart or atomized. Atomization can also be carried out with the help of steam or compressed air, these methods not being used for smaller liquid flows.
  • the present invention is based on the object of creating a method and a device for producing microfluidic droplets which allow extremely fine atomization of the liquid even at very low liquid pressure.
  • the liquid and the gas flow collide violently This makes it possible to achieve fine atomization at very low pressure of the liquid emerging from the opening.
  • the method according to the invention gives maximum fine atomization even with very small liquid flows.
  • the radius of the helical flow path of the gas flow in the direction away from the opening through which the liquid is injected into the atomizing chamber is increasingly, preferably steadily, reduced.
  • the gas flow experiences an additional acceleration, with the result that the entrained liquid droplets are broken up to an increased extent.
  • Extremely fine liquid droplets or micro liquid droplets in the order of magnitude of about 20 ⁇ m are obtained.
  • Such a small average droplet size cannot be achieved with the known atomizing nozzles or methods.
  • a reduction in the average tube size below 50 / um mostly failed due to the manufacturing possibilities.
  • the latter solution thus provides an extremely long transport route for the liquid droplets entrained by the gas flow through a relatively short space. So that it is z. B. also possible, liquid droplets within a very small "reaction space” or transport space z. B. to bring to full evaporation.
  • the inventive method proper It is particularly useful for drying and burning a liquid, because it is generally known that the smaller the droplets, the faster and more complete the drying or combustion.
  • the process time t is the necessary length of stay in the transport or reaction space, whereby this time can be maintained even with a very small transport space due to the movement path of the droplets in the transport space according to the invention.
  • the liquid droplets in the atomizing space and / or transport space or reaction space come into contact with the inner surface of the room wall.
  • Corresponding deposits on the inner surface of the room walls should be avoided.
  • the gas is introduced into the atomizing space and / or the transport space advantageously at a distance from the inner surface of the room wall.
  • a self-twisting or rotating movement can be impressed on the gas along the flow path.
  • the gas flow is then characterized by two superimposed rotational movements.
  • FIGS. 1a to 1d A good atomization of a liquid can be achieved by the atomizer units shown in FIGS. 1a to 1d, each consisting of a centrally arranged liquid tube 10, a concentrically surrounding cylindrical jacket 11 with a conically tapering atomizer chamber 12 and the outer circumference of the liquid tube 10 gas guide means or gas inlet openings 16 arranged obliquely to the longitudinal axis of the tube exist which pressure or pressure flow around the liquid tube 10 in the longitudinal direction. Impress atomizing gas a swirl movement 13.
  • the tube opening or liquid inlet opening 14 is designed such that the liquid jet 15 fans out conically (hollow spray cone 17) as it exits the opening 14.
  • baffles 47 are arranged in the gas inlet openings for deflecting the gas flow.
  • swirl grooves 48 are provided on the outer circumference of the liquid tube, which likewise impart a swirl movement to the atomizing gas.
  • the end 49 of the liquid tube 10 protruding into the atomizing chamber 12 extends in the embodiment according to FIG. 1b to close to the outlet opening 18, so that an extremely violent collision of atomizing gas and emerging liquid takes place immediately before this opening. The liquid is virtually "blown up" immediately before it emerges from the atomizing chamber 12.
  • the outer surface of the part of the tube 10 projecting into the atomizing chamber 12 is conical, corresponding to the atomizing chamber.
  • the liquid tube 10 is lengthened by a tube 50 inserted into the opening 14 thereof, which can preferably be arranged in a longitudinally displaceable manner therein.
  • gas inlet openings for the entry of secondary gas can also be provided in order to reliably avoid contact between the liquid droplets and the inner surface of the atomizer chamber wall and thus deposits on the latter.
  • the secondary gas can also be compressed gas and is preferably introduced in such a way that the swirl movement 13 of the atomizing gas is additionally supported.
  • FIGS. 1a to 1d To chemical or physical reactions with the z. B. in the atomizer chamber 12 of the liquid droplets obtained in FIGS. 1a to 1d, these are moved through a transport space or reaction space along a predetermined path. 2 and 3 each show cylindrical transport spaces 20 which are each open at the right end. A droplet 19 is moved from a point A to a point B. On this route the droplet z. B. evaporate.
  • FIG. 3 shows that when the droplet moves along an arc line, the distance between points A and B is less than when moving along a straight line (according to FIG. 2). The effective movement distance is of course the same. 3, however, the movement in the second dimension is used, which leads to a shortening of the distance between the two end points of the movement path.
  • the droplets are guided or carried along the three-dimensional path through the transport or reaction space 20.
  • the droplets 19 enter the transport space 20, which is delimited by a cup-shaped container with a side wall 28, through a droplet inlet opening 22, which is located in the center of the end face of the cup-shaped container.
  • a droplet inlet opening 22 At a radial distance from the opening 22 there are a plurality of openings 24, which are evenly distributed over the circumference, for the gas entry into the transport space 20, wherein in the openings 24 there are respectively inclined guide plates or blades 26, which form a helical gas flow around the longitudinal axis 9 of the transport - or effect reaction chamber 20.
  • gas inlet openings 24 are located in the side wall 28 of the pot-shaped container.
  • more than one gas inlet opening 24 can be provided.
  • the gas inlet openings 24 are inclined to the radial (as section A-A clearly shows) in order to impart a predetermined screw movement through the transport space 20 to the gas flow (see arrows).
  • the inner diameter of the pot-shaped housing can be dimensioned such that the gas flow practically no longer acts on the inner surface of the side wall 28. This eliminates the danger or their reaction products of a deposit of liquid droplets on the inner surface of the side wall 28. Such deposits would lead to a change in the flow conditions and would require cleaning of the transport or reaction space 20 after a certain period of operation.
  • the inner surface of the side wall can be inserted into the openings 24 28 protruding tubes 30 are used (cf. FIG. 6 with a corresponding section BB).
  • the tubes 30 are slidably inserted within the openings 24, so that the length of the part projecting beyond the inner surface of the side wall 28 can be changed.
  • the easiest way to solve this problem is to screw the tubes 30 into the openings 24.
  • the jet direction of the openings 24 or the tubes 30 can preferably also be changed for the purpose of adaptation to different droplet sizes, etc.
  • FIG. 7 shows a combination of the atomizer unit shown schematically in FIG. 1 and the transport or reaction unit shown schematically in FIG. 6.
  • the liquid droplets generated in the atomizer chamber 12 pass through the atomizer chamber outlet openings 18 or droplet inlet opening 22 into the transport space 20, where they experience an approximately conical fanning out, which is surprisingly conveyed by the gas introduced through the tubes 30.
  • a negative pressure is created in the annular space between the closed end face of the transport space 20 and the gas tubes 30, which pulls the liquid droplets emerging from the opening 22 radially outwards. This will take the liquid droplets 19 by the shortest route in the area of the gas flow shown in Fig - 7 characterized by the reference numeral 21..
  • a distributor body 32 is arranged, the side of which is oriented toward the opening 22 is flat.
  • the plane of the distributor body 32 facing the opening 22 can also be convex or conical.
  • the distributor body 32 thus favors rapid mixing of the droplets with the gas flow 21, the degree of mixing being able to be set by the shape of the distributor body 32.
  • the distance between the distributor body 32 and the opening 22 also has an influence on the degree of mixing or fanning out of the liquid droplets introduced into the transport space.
  • the distributor body 32 is therefore preferably mounted such that it can be moved back and forth in the direction of the longitudinal axis 9 of the transport or reaction space 20. Good results can be achieved if the distributor body 32 lies in a plane between the droplet inlet opening 22 and the plane defined by the gas tubes 30 close to the same.
  • the distributor body 32 promotes in particular the uniform distribution of the introduced droplets 19 over the cross-section of the transport or reaction space 20.
  • the distributor body 32 thus prevents local droplet accumulations, as a result of which uniform mixing into the gas stream 21 is achieved.
  • the distributor body 32 is fastened to a stiff wire.
  • other fastening options are also conceivable, although care must be taken to ensure that the fastening means do not adversely affect the flow, in particular the swirl movement of the gas-droplet flow in the transport space 20.
  • transport space or reaction chamber 20 to serve as a combustion chamber in this still preferably a Zündeinrichtun g / provided in the area of the droplet inlet port 22 to the combustion of the liquid droplets, z. B. oil droplets to start.
  • the unit according to FIG. 7 is used as an oil burner and is identified by the reference number 41.
  • the burner 41 is attached to the upper end of an upright heat exchanger 42, the transport or reaction space 20 projecting slightly into an exhaust gas space 43.
  • the reaction chamber 20 serves as the combustion chamber, the flame 44 slightly knocking out of the combustion chamber 20.
  • the hot combustion gases are passed through the exhaust gas space 43 in accordance with the arrows 45, a tubular radiation body 34 being arranged concentrically inside the exhaust gas space 43 at the end remote from the burner.
  • the outside diameter of the tubular radiation body 34 is somewhat smaller than the inside diameter of the exhaust gas chamber 43, which is also tubular in the embodiment shown.
  • Both the radiation body 34 and the wall of the exhaust gas space 43 are preferably made of heat-resistant metal (steel) and have a dark, preferably black color, so that they serve as ideal radiation bodies.
  • the additional radiation body 34 and the exhaust pipe delimiting the exhaust gas space 43 promote the heat exchange between the hot combustion gases and the environment, in the present case a heat exchange medium 38, which is passed at a distance from the exhaust pipe.
  • the exhaust pipe as well as between the hot combustion gases and / in particular the black radiation body 34 is heated exchange by convection.
  • the heat absorbed by the exhaust pipe and / or radiation body 34 is emitted again by radiation to the environment or to the heat exchange medium 38 and transported through this to another location.
  • black radiation bodies which are “flushed” by the hot combustion gases, can also be arranged behind the outlet of the exhaust pipe or in the gas guide channels 46 extending through the heat exchanger 42.
  • the shape of the radiation body can e.g. B. be egg-shaped.
  • tubular radiation bodies can also be used again. Of course, care must be taken to ensure that the arrangement of the radiation bodies in the gas guide channels does not cause excessive pressure drops.
  • the black radiation bodies are made of metal, preferably of heat-resistant, stainless steel. But they can just as well be made of ceramic or stone. The material depends on the gas flowing around the radiation body or the chemical and / or physical reactions taking place in the reaction space 20.
  • the radiation bodies are arranged relatively far from the combustion flame, the flame temperature and thus the combustion are not influenced by the radiation bodies.
  • the radiation bodies are arranged in the immediate vicinity of the flame or the reaction site, a cooling effect is achieved by the radiation bodies, which dissipate heat to the outside, ie to the environment. B. causes the reaction rate is reduced or a reaction does not take place at all (e.g. cracking processes).
  • the radiation bodies are also particularly suitable for the controlled afterburning of exhaust gases in an exhaust duct.
  • the radiation bodies are arranged in the exhaust duct at a suitable distance from the combustion flame and are heated from the outside by heat radiation. The heat then emitted from the radiation body to the exhaust gases by means of convection causes the exhaust gases to re-ignite, so that complete combustion is achieved before the exhaust gases exit into the open.
  • the described invention is particularly suitable for an oil burner. Therefore, the conditions in an oil burner and the advantages achieved by the solution according to the invention are discussed in detail again below.
  • equation (2) is limited to the case in which there is no influence of a relative movement between the droplet and the environment.
  • the value ⁇ - and consequently the value m - can be increased by increasing the temperature of the environment around the oil droplet, usually the air atmosphere, since the value of D is temperature-dependent and -dD / dT> 0 is.
  • the droplet size is therefore of great importance, since smaller droplets lead to a higher value of B.
  • the first condition is optimally met by a nozzle according to FIGS. 1a to 1d.
  • the second condition can very easily be met by introducing preheated air into the atomizing chamber 12 and optionally the reaction chamber 20.
  • the third condition can also be very simple by preheating the oil to be burned.
  • the screw movement of the liquid droplets through the reaction space according to the invention achieves a sufficient residence time for the droplets in the reaction space 20 for complete combustion although the reaction space 20 is of very short construction.
  • the short construction of the reaction space 20 has the additional advantage that heat radiation losses in the area of the reaction space are correspondingly low.
  • Nitrogen oxides are especially dangerous for animals /. For this reason, laws in many countries require that the nitrogen oxide concentration in exhaust gases must not exceed a certain value. In Germany, the nitrogen oxide concentration in oil burners (operated with heavy oil) must not exceed 500 ppm in the exhaust gas.
  • the small design results in a correspondingly short residence time for the combustion gases. Furthermore, the burning time is reduced to a minimum even due to the extremely small liquid or oil droplets.
  • the residence time of the droplets and exhaust gases in the unit according to FIG. 7 is approximately 0.07 seconds. According to FIG. 9, approximately 20 ppm NO are formed when the unit according to FIG. 7 is used as an oil burner. With this short dwell time, it hardly matters if the combustion air is preheated. As has been explained above, preheating the combustion air improves the combustion itself or the combustion intensity.
  • FIG. 10 the NO values of an oil burner designed according to the invention are again shown schematically in comparison to conventional oil burners, specifically as a function of the oil flow rate (l / h) and the oxygen content during combustion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
EP80106544A 1979-10-25 1980-10-24 Procédé et dispositif pour la production de gouttes de liquide microfines Expired EP0028025B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106544T ATE3906T1 (de) 1979-10-25 1980-10-24 Verfahren und vorrichtung zur erzeugung von mikrofluessigkeitstroepfchen.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE7908864 1979-10-25
SE7908865 1979-10-25
SE7908863A SE7908863L (sv) 1979-10-25 1979-10-25 Stralningskropp
SE7908863 1979-10-25
SE7908865A SE7908865L (sv) 1979-10-25 1979-10-25 Sett for transport av droppar
SE7908864A SE7908864L (sv) 1979-10-25 1979-10-25 Sett for fordelning av vetska till droppar

Publications (2)

Publication Number Publication Date
EP0028025A1 true EP0028025A1 (fr) 1981-05-06
EP0028025B1 EP0028025B1 (fr) 1983-06-22

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ID=27355203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106544A Expired EP0028025B1 (fr) 1979-10-25 1980-10-24 Procédé et dispositif pour la production de gouttes de liquide microfines

Country Status (9)

Country Link
US (1) US4473185A (fr)
EP (1) EP0028025B1 (fr)
JP (1) JPS56501380A (fr)
CA (1) CA1159356A (fr)
DE (1) DE3063914D1 (fr)
DK (1) DK150395C (fr)
FI (1) FI69696C (fr)
NO (1) NO812067L (fr)
WO (1) WO1981001186A1 (fr)

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WO1992016794A1 (fr) * 1991-03-20 1992-10-01 Witteveen Gustaaf J Procede et dispositif de melange pour substances gazeuses, liquides ou solides et pulverisees
EP0565814A2 (fr) * 1992-04-13 1993-10-20 LLB Lurgi Lentjes Babcock Energietechnik GmbH Chalumeau pour pulvériser une suspension charbon-eau
US6045531A (en) * 1997-07-22 2000-04-04 Chase Medical Inc. Catheter having a lumen occluding balloon and method of use thereof
US6068608A (en) * 1997-05-01 2000-05-30 Chase Medical, Inc. Method of using integral aortic arch infusion clamp
US6132397A (en) * 1997-05-01 2000-10-17 Chase Medical Inc. Integral aortic arch infusion clamp catheter
US6241699B1 (en) 1998-07-22 2001-06-05 Chase Medical, Inc. Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart
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FR2605053A1 (fr) * 1986-10-14 1988-04-15 Gen Electric Aeronef a combustibles multiples, et son systeme de propulsion
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US11028727B2 (en) * 2017-10-06 2021-06-08 General Electric Company Foaming nozzle of a cleaning system for turbine engines
US10287970B1 (en) 2017-12-07 2019-05-14 Caterpillar Inc. Fuel injection system
WO2019145159A1 (fr) * 2018-01-23 2019-08-01 Shl Medical Ag Générateur d'aérosol
CN109365156A (zh) * 2018-12-05 2019-02-22 郑州沃众实业有限公司 一种自动旋转的高效喷雾装置
CN113461346A (zh) * 2021-07-09 2021-10-01 鞍钢金属结构有限公司 一种可不停机清除罐底沉积的石灰消化罐及其工作方法
CN113680545B (zh) * 2021-08-30 2022-12-16 浙江工业大学 一种采用旋转结构调节的降噪喷嘴

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DE1551728A1 (de) * 1967-12-19 1970-04-16 Shell Int Research Brennerkopf
DE2005972A1 (en) * 1970-02-10 1971-09-02 Badische Anilin & Soda Fabrik AG, 6700 Ludwigshafen Atomisation of liquids, suspensions or pastes
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EP0565814A2 (fr) * 1992-04-13 1993-10-20 LLB Lurgi Lentjes Babcock Energietechnik GmbH Chalumeau pour pulvériser une suspension charbon-eau
EP0565814A3 (en) * 1992-04-13 1993-11-24 Babcock Energie Umwelt Burner torch for pulverising a coal-water suspension
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US6241699B1 (en) 1998-07-22 2001-06-05 Chase Medical, Inc. Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart
CN111346869A (zh) * 2020-05-06 2020-06-30 浙江大农实业股份有限公司 一种热水高压清洗机

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FI69696B (fi) 1985-11-29
FI69696C (fi) 1986-03-10
DK199781A (da) 1981-05-05
FI811693L (fi) 1981-06-01
DK150395C (da) 1987-09-28
DE3063914D1 (en) 1983-07-28
WO1981001186A1 (fr) 1981-04-30
US4473185A (en) 1984-09-25
EP0028025B1 (fr) 1983-06-22
CA1159356A (fr) 1983-12-27
JPS56501380A (fr) 1981-09-24
DK150395B (da) 1987-02-16
NO812067L (no) 1981-06-18

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