US3908904A - Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces - Google Patents

Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces Download PDF

Info

Publication number
US3908904A
US3908904A US405908A US40590873A US3908904A US 3908904 A US3908904 A US 3908904A US 405908 A US405908 A US 405908A US 40590873 A US40590873 A US 40590873A US 3908904 A US3908904 A US 3908904A
Authority
US
United States
Prior art keywords
acid
ultrasonic
coarse spray
furnace
feed stream
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.)
Expired - Lifetime
Application number
US405908A
Other languages
English (en)
Inventor
Walter Kerner
Friedrich Mahler
Heinrich Peters
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.)
Davy McKee AG
Original Assignee
Davy Powergas GmbH
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 DE19722250521 external-priority patent/DE2250521C3/de
Priority claimed from DE19722256442 external-priority patent/DE2256442A1/de
Application filed by Davy Powergas GmbH filed Critical Davy Powergas GmbH
Application granted granted Critical
Publication of US3908904A publication Critical patent/US3908904A/en
Assigned to DAVY MCKEE AKTIENGESELLSCHAFT reassignment DAVY MCKEE AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 17, 1980 Assignors: DAVY INTERNATIONAL AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0692—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by a fluid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/008—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste

Definitions

  • waste sulfuric acids containing varying amounts of impurities are obtained, which latter can be removed only by expensive procedures. Therefore, these acids, containing besides water primarily organic compounds, e.g., sulfonic acids, sulfates, such as, for example ammonium sulfate or metallic sulfates, or metallic oxides, are split reductively at temperatures of between about 850 and l250C., forming an SO -containing cracked gas which can be conventionally processed according to the contact method to obtain concentrated sulfuric acid or oleum.
  • the thermal energy required for the cracking step is generated by the combustion of oil or heating gas in the cracking furnace.
  • air atomizer nozzles of a large cross section have heretofore been preferably employed for the feeding and discharging of the acid, since most of the waste sulfuric acids contain considerable impurities in the form of solid substances and/or polymerization products. Because of these contaminants,-pure pressure atomizer nozzles tend to clog, resulting in disturbances in the operation. With the heretofore utilized air atomizer nozzles, it has been necessary to use, for throughput efficiencies of up to 20 tons of acid per hour and more, 0.5 to 0.8 Nm of air under a pressure of 5000 mm. H O column per kg. of acid,-depending on the constitution of the acid, in order to atomize theacid.
  • the ultrasonic atomizer riozzle assembly of this invention comprises an ultrasonic generator for generating an ultrasonic field, said generator having an operative end face and'resonanc'e chamber having an outlet opening disposed at said end face, a first conduit for feeding the operating medium to said chamber, and means for producing ultrasonic sound in said operating medium, a second conduit for feeding a stream of said waste sulfuric acid, an atomizer for converting said stream into a coarse spray positioned adjacent saidoperative end face of said ultrasonic generator, one of said atomizer and said resonance chamber substantially surrounding the other, whereby the ultrasonic sound energy is distributed throughout said coa rse spray.
  • Waste sulfuric acid either contains'initially solid substances, or is freed of such substances during the atomizing step. Therefore, pressure and rotary atomizers for waste sulfuric acids tend to clog rapidly and thus are quickly prone to disturbances in operation, if the atomv ization is to be conducted so that the fineness required for an extensive cracking step is produced. It has now been found that these disturbances are avoided and yet a considerable increase in the cracking yield can be attained by conducting a coarse atomizing by means of the pressure or rotary atomizer into an ultrasonic field.
  • the nozzle width and/or the ejected film thickness is selected to be so large that the impurities contained in the acid cannot impair the atomization process. Subsequently, the thus-produced droplet cone and/or film is extremely finely atomized in the ultrasonicfield, resulting in an increase in the cracking yield of of up to at least 99.5%. Thereby, the susceptibility to corrosion of the cooling devices connected downstream of the cracking furnace is reduced, and the yield of regenerated sulfuric acid is increased.
  • the pressure or rotary atomizer is accommodated in a central cavity of the ultrasound generator, wherein the nozzle of the pressure atomizer or the centrifugal edge of the rotary atomizer is arranged in the end surface area of the ultrasound generator. Due to the construction of the ultrasound generator in the form of a hollow cylinder, in the interior of which is the pressure or rotary atomizer, an optimum utilization of the ultrasonic field is achieved for the fine atomization, and a compact atomizer construction suitable for installation in cracking furnaces results therefrom.
  • the annular slot between the pressure or rotary atomizer and the ultrasound generator is in communication with a compressed-gas source via a conduit.
  • the gas feed to the annular slot between the atomizer and the ultrasound generator is merely to avoid the entrance of the acidic furnace atmosphere into this annular slot and any possible condensation and corrosion on the internal parts of the ultrasonic atomizer.
  • the conduit serves only to maintain a gas buffer in the annular slot. The air feed into the furnace is effected almost exclusively at the burners, rather than through the annular slot between the atomizer and the ultrasound generator. The nebulization is attained,
  • an ultrasonic atomizer is utilized operating with low-pressure steam as the operating medium for the ultrasound generator.
  • lowpressure steam is employed of 0.6 l atmospheres gauge, preferable 0.6 4 atmospheres gauge.
  • the use of steam as the operating medium for the ultrasound generator has the advantage that the steam can be condensed out of the cracked gas and thus does not result in a dilution of the contact gas.
  • the ultrasound generator of the acid atomizer of this invention can also be operated, in place of steam, with compressed air or a combustible gas. For the operation of the ultrasound generator, only a fraction (maximally 50%) of the amount of air is required which is otherwise necessary for the atomization of the same quantity of waste acid in an air atomizer nozzle.
  • the operating medium flows at very high speed along the deflection element into the annular resonance chamber and is excited therein to ultrasonic vibrations.
  • the high-energy sonic waves are conducted to the acid cone to be atomized, and the latter is extremely finely divided by the sonic field.
  • the ultrasonic atomizer is usable, besides for the nebulization of waste sulfuric acid, also for the atomization of waste solutions containing salts (ammonium salts) of sulfur-containing acids.
  • the rotary atomizer consists of a cup axially joined to a rotary drive shaft and of a feed pipe for the acid terminating in the cup.
  • the feed pipe has lateral openings, through which the acid exits radially and is conveyed against the inner surface of the cup, the latter rotating at a speed of about 4000 7000 r.p.m., depending on the throughput efficiency.
  • the sheet formed on the internal surface of the cup by the centrifugal effect is torn apart at the cup edge into droplets which, due to their centrifugal force, enter the sonic field of the ultrasound generator.
  • the rotary drive shaft is constructed as a quill shaft, and the feed pipe is extended axially through the quill shaft for rotation therewith, up into the cup. This provides a simple feed of the acid into the cup rotating at a high speed.
  • the invention concerns an ultrasonic atomizer for the atomization of waste sulfuric acid in cracking furnaces, consisting of an ultrasound generator with an annular resonance chamber disposed at the end face, a conduit for the feeding of the operating medium, and a deflecting element for the guidance of the stream of operating medium from the feed conduit into the resonance chamber, wherein the atomizer is characterized in that the mouth of a feed duct for the waste sulfuric acid to be atomized is arranged in the close proximity to the.ultrasound generator.
  • the ultrasound generator is surrounded by the outlet opening of the feed duct for the waste sulfuric acid.
  • the annular exit slot of the feed duct has preferably a maximum slot width of 1 mm.
  • An atomizing nozzle with such an external ring-shaped acid discharge slot is suitable for the atomization of waste sulfuric acids having solid particles of up to a size of 0.5 mm. in diameter.
  • the discharge opening of the feed duct for the waste sulfuric acid is arranged centrally in the ultrasound generator, especially axially within the deflection element.
  • the feed duct is suitably an axially linear bore, the diameter of which can be up to maximally 10 mm.
  • This embodiment is suitable for strongly contaminated waste sulfuric acids having solids particles of up to several millimeters in diameter.
  • the furnace for the waste acid dissociation is characterized, according to the invention, in that a burner for the fuel required for the acid cracking process is centrally arranged in the furnace ceiling, and the ultrasonic atomizers are distributed around the burner, and that a furnace body constriction is provided at a spacing from the furnace ceiling amounting to 14 times, especially 1.5 3 times the diameter of the furnace.
  • brick-lined cracking furnace has generally a cylindrical configuration and is preferably vertically disposed.
  • the ultrasonic atomizers are distributed around the burner in a uniform concentric arrangement.
  • This provides an axially symmetrical gas circulation in the furnace chamber.
  • the furnace body constriction is suitably equipped with gas passage openings on the furnace wall.
  • the ultrasonic atomizers also permit the alteration of the configuration of the acid mist from an elongated up to a short, bulging shape, likewise resulting in a maximum utilization of the cracking furnace volume and an increase in the cracking yield.
  • the burner for the production of the cracking heat in the furnace is a pulsed oil burner.
  • the pulsed oil burner is arranged in a burner muffle axially attached to the ceiling of the cracking furnace, so that already the hot combustion gases enter at a high speed (up to 150 m./sec.) in parallel to the acid mists into the cracking furnace.
  • a high speed up to 150 m./sec.
  • a special advantage of the ultrasonic atomizers of this invention in cracking furnaces for waste sulfuric acid resides in that only a relatively minor amount of low-pressure steam as compared to the amount of acid to be atomized is required for the production of the high-energy ultrasonic field.
  • the steam consumption ranges between 0.1 and 0.3 kg. of steam per kg. of waste sulfuric acid, depending on the constitution of the acid.
  • FIG. 1 shows an axial sectional view of a first embodiment of the ultrasonic atomizer nozzle of this invention
  • FIG. 2 shows an axial sectional view of a second embodiment of the ultrasonic atomizer nozzle of this invention
  • FIG. 3 shows an axial sectional view of a third embodiment of the ultrasonic atomizer nozzle of this invention
  • FIG. 4 shows an axial sectional view of a fourth embodiment of the ultrasonic atomizer nozzle of this inventiomand
  • FIG. 5" shows an axial sectional view of the cracking furnace of the present invention in a schematic representation.
  • the atomizer nozzle 1 consists of an annular ultrasound generator 3 with a resonance chamber 3, to which the operating medium is fed via the annular chamber 3", the bores 3 and the annular through the interior 2 of the pipe 2 and through the bores 16" into the turbulence chamber 16. From the turbulence chamber, the acid passes through the opening 16 and enters the ultrasonic field, emanating from 'the resonance chamber 3, in the form of a cone of coarsely atomized droplets.
  • FIG. 2 differs from the embodiment of FIG. 1 essentially in that a rotary atomizer 19 is arranged in the cavity 3" of the ultrasound generator 3 in place of the pressure atomizer 16
  • the rotary atomizer 19 comprises essentially an atomizing cup 19, attached at one end'of a quill shaft 17 rotat- "-ahiy supported in the bearings 18.
  • the hollow shaft 17 isco nne cted to a rotary drive (not shown) in a suitable manner.
  • a feed pipe 20 for the acid is coaxially 'rhoun't'ed in the quill shaft 17 and extends with its front end into the distributing cup 19.
  • the fe'ed pipe 20 has several lateral openings 20 for the disi charg ing' of the acid into the cup 19.
  • the annular 's paceil5 between the rotary atomizer 19 and the ultra sound generator 3 can be connected, via a pipeline to a'compressed-gas source (not shown), so that a gas buffercan beformed in the annular space 15, preventing the entrance of cracked gas.
  • a'compressed-gas source not shown
  • the acid fed through pipe and exiting through openings 20 is forced against the inside of the cup 19' rotating at a high speed.
  • the acid spreads like a sheet over the inner wall of the cup and isflung from thecup edge 19 in the form of droplets into the ultrasonic field, wherein they are converted into a fine mist;
  • the atomizer nozzle 1 consists of a front sleeve 1 with an internal thread and a rear sleeve 3 .with an external thread.
  • the sleeves l and 3 are threadedly connected with the interposition of a spacer ring 1.
  • An annular projection 3" is formed at the sleeve 3, extending forwardly approximately to the front edge of the sleeve 1; this projection flares at the front end and contains a forwardly open resonance chamber 3.
  • An axial sleeve 3" having an internal thread is'mounted to the front sleeve portion 3' and is connected to the latter with the aid of spokes; the deflecting element 5 with the guide surface 5 is threadedly inserted in this axial sleeve.
  • the waste sulfuric acid is fed through the annular duct 2 and the bores 3 of the sleeve 3 to the outlet opening 2 formed as an annular slot.
  • the operating medium (steam) required for the production of the ultrasonic field is conducted through the internal duct 4, between the spokes 3 along the de- .flection surface 5 into the annular resonance chamber
  • the reso- I been threadedly inserted into the sleeve 3
  • the deflecting element S is threadedly inserted into the inner thread ofthe mounting ring 14 to such an extent that the operating medium fed through the annular duct 4 is deflected at the guide surface 5 into the resonance chamber 3f.
  • a sleeve 13 is threadedly inserted into the outer sleeve 3; this sleeve 13 forms, together with the rear end of the deflecting element 5, the annular duct 4 for feeding the operating medium for the generation of ultrasound.
  • the waste sulfuric acid to be atomized is supplied through the central bore 2 in the deflection element 5 and enters the ultrasonic field produced by the resonance chamber 3 at the front aperture 2".
  • FIG. 5 shows a vertical cracking furnace 6, wherein a burner muffle with a burner 7 is centrally attached at the ceiling 6. thereof; the burner is provided with feed 7 pipes for air and fuel oil (7" and 7", respectively). Furthermore, several ultrasonic atomizers 1] are arranged in the furnace ceiling in concentric distribution around the burner 7 these atomizers are adjustable in the vertical direction with the aid of a lance 8.
  • a flame bridge 6 is formed in the furnace chamber at a spacing from the furnace ceiling corresponding to 2.5 times the diameter of the furnace chamber. The flame bridge 6 has gas passages 6 beside the furnace wall 6".
  • the ultrasonic nebulization of the acid in conjunction with the circulation of the completely burnt-out combustion gases in the combustion chamber, makes it possible to achieve an almost complete reduction of the hexavalent sulfur contained in the atomized solutions to sulfur dioxide.
  • a method of atomizing in a furnace aqueous waste sulfuric acid containing suspended solids or dissolved salts which precipitate upon atomization of the acid which comprises the combination of steps of first mechanically converting a feed stream of the aqueous acid into a coarse spray and further atomizing the coarse spray by passing it through a field of ultrasonic sound.
  • a method of atomizing acid solutions containing sulfur and also containing impurities of suspended solids or dissolved salts which precipitate upon atomization of the acid solution comprising developing an ultrasonic field in free space;
  • said impurities have a diameter of up to several millimeters and wherein the step of converting a field stream into a coarse spray includes the step of feeding said feed stream through a central bore and wherein said step of developing an ultrasonic field includes the step of passing steam through an annular space surrounding said central bore.
  • step of converting a feed stream into a coarse spray also includes the step of forcing said feed stream against the inner surface of a cup rotating at a speed of about 4000 to 7000 rpm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Special Spraying Apparatus (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US405908A 1972-10-14 1973-10-12 Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces Expired - Lifetime US3908904A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722250521 DE2250521C3 (de) 1972-10-14 1972-10-14 Spaltofen für die Zerstäubung von Abfallschwefelsäure mit Ultraschallzerstäubern
DE19722256442 DE2256442A1 (de) 1972-11-17 1972-11-17 Ultraschallzerstaeuber fuer die zerstaeubung von abfallschwefelsaeure und mit diesen ultraschallzerstaeubern ausgestattete saeurespaltoefen

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/719,973 Division US4102651A (en) 1972-10-14 1976-09-02 Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces

Publications (1)

Publication Number Publication Date
US3908904A true US3908904A (en) 1975-09-30

Family

ID=25763954

Family Applications (1)

Application Number Title Priority Date Filing Date
US405908A Expired - Lifetime US3908904A (en) 1972-10-14 1973-10-12 Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces

Country Status (4)

Country Link
US (1) US3908904A (US07754267-20100713-C00021.png)
JP (1) JPS5627308B2 (US07754267-20100713-C00021.png)
FR (1) FR2203289A5 (US07754267-20100713-C00021.png)
GB (1) GB1453473A (US07754267-20100713-C00021.png)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256721A (en) * 1979-02-23 1981-03-17 Boc Limited Combustion method and apparatus
FR2498481A1 (fr) * 1981-01-26 1982-07-30 Inst Atomnogo Energet Procede et dispositif de pulverisation de liquides dans un fluide gazeux
US4376107A (en) * 1981-06-11 1983-03-08 Morgenthaler John H Process for the regeneration of spent sulfuric acid
WO1983001749A1 (en) * 1981-11-13 1983-05-26 Stigsson, Lars, Lennart A method for atomizing dispersions or solutions containing particles
US4728285A (en) * 1985-01-25 1988-03-01 Dumag Offene Handelsgesellschaft Dr. Techn. Ludwig Kaluza & Co. Device for the combustion of fluid combustible materials
US4925647A (en) * 1986-09-24 1990-05-15 Hoechst Aktiengesellschaft Process for the production of metal oxides or metal mixed oxides
US4935209A (en) * 1986-09-19 1990-06-19 Belco Technologies Corporation Reaction enhancement through accoustics
US6399040B1 (en) * 1999-06-03 2002-06-04 Rohm And Haas Company Process for generating recoverable sulfur containing compounds from a spent acid stream
WO2003030995A2 (en) 2001-10-11 2003-04-17 Life Mist, Llc Apparatus comprising a pneumoacoustic atomizer
US20040134094A1 (en) * 2002-12-20 2004-07-15 Iris Hahn Clothes dryer and method for utilizing an ultrasound atomizer
US20050136190A1 (en) * 2003-03-27 2005-06-23 Shinji Tani Coating method and atomizer
US20090291401A1 (en) * 2006-08-11 2009-11-26 Mitsubishi Heavy Industries, Ltd. Burner
CN102951616A (zh) * 2012-11-21 2013-03-06 中国寰球工程公司辽宁分公司 废酸裂解炉
US20160303539A1 (en) * 2015-04-17 2016-10-20 LLT International (Ireland) Ltd. Systems and methods for facilitating reactions in gases using shockwaves produced in a supersonic gaseous vortex
US9724703B2 (en) 2014-06-06 2017-08-08 LLT International (Ireland) Ltd. Systems and methods for processing solid materials using shockwaves produced in a supersonic gaseous vortex
US10137456B1 (en) 2014-06-06 2018-11-27 LLT International (Ireland) Ltd. Reactor configured to facilitate chemical reactions and/or comminution of solid feed materials
US10434488B2 (en) 2015-08-11 2019-10-08 LLT International (Ireland) Ltd. Systems and methods for facilitating dissociation of methane utilizing a reactor designed to generate shockwaves in a supersonic gaseous vortex
US10562036B2 (en) 2015-04-17 2020-02-18 LLT International (Irelant) Ltd. Providing wear resistance in a reactor configured to facilitate chemical reactions and/or comminution of solid feed materials using shockwaves created in a supersonic gaseous vortex
US11203725B2 (en) 2017-04-06 2021-12-21 LLT International (Ireland) Ltd. Systems and methods for gasification of carbonaceous materials

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2614384B2 (de) * 1976-04-02 1980-04-30 Bayer Ag, 5090 Leverkusen Verfahren zum thermischen Zersetzen von polychlorierten organischen Verbindungen
FR2500118A1 (fr) * 1981-02-18 1982-08-20 Inst Atomnogo Energet Bruleur a rotation pour combustibles liquides
JPS58132113U (ja) * 1982-02-27 1983-09-06 トヨタ自動車株式会社 オイルパンへのオイル戻し構造
CN103288155B (zh) * 2013-05-24 2014-08-06 西安交通大学 一种海水淡化喷淋布液喷头
CN116498973B (zh) * 2023-07-03 2023-09-22 浙江百能科技有限公司 Pta副产固态和液态废弃物混合焚烧处理系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481620A (en) * 1945-02-08 1949-09-13 Skiatron Corp Device for dispensing liquid fuel into combustion air of furnaces
US3243122A (en) * 1965-02-24 1966-03-29 Alvin A Snaper Ultrasonic spray apparatus
US3375977A (en) * 1964-03-25 1968-04-02 Philips Corp Ultrasonic atomiser
US3469785A (en) * 1967-07-28 1969-09-30 Macrosonics Corp High frequency ultrasonic fog generator and method
US3746257A (en) * 1971-06-21 1973-07-17 Plessey Handel Investment Ag Fuel injection systems more particularly for liquid fuel burners

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481620A (en) * 1945-02-08 1949-09-13 Skiatron Corp Device for dispensing liquid fuel into combustion air of furnaces
US3375977A (en) * 1964-03-25 1968-04-02 Philips Corp Ultrasonic atomiser
US3243122A (en) * 1965-02-24 1966-03-29 Alvin A Snaper Ultrasonic spray apparatus
US3469785A (en) * 1967-07-28 1969-09-30 Macrosonics Corp High frequency ultrasonic fog generator and method
US3746257A (en) * 1971-06-21 1973-07-17 Plessey Handel Investment Ag Fuel injection systems more particularly for liquid fuel burners

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256721A (en) * 1979-02-23 1981-03-17 Boc Limited Combustion method and apparatus
FR2498481A1 (fr) * 1981-01-26 1982-07-30 Inst Atomnogo Energet Procede et dispositif de pulverisation de liquides dans un fluide gazeux
US4376107A (en) * 1981-06-11 1983-03-08 Morgenthaler John H Process for the regeneration of spent sulfuric acid
WO1983001749A1 (en) * 1981-11-13 1983-05-26 Stigsson, Lars, Lennart A method for atomizing dispersions or solutions containing particles
US4580723A (en) * 1981-11-13 1986-04-08 Fluidcarbon International Ab Method for atomizing dispersions or solutions containing particles
US4728285A (en) * 1985-01-25 1988-03-01 Dumag Offene Handelsgesellschaft Dr. Techn. Ludwig Kaluza & Co. Device for the combustion of fluid combustible materials
US4935209A (en) * 1986-09-19 1990-06-19 Belco Technologies Corporation Reaction enhancement through accoustics
US4925647A (en) * 1986-09-24 1990-05-15 Hoechst Aktiengesellschaft Process for the production of metal oxides or metal mixed oxides
US6399040B1 (en) * 1999-06-03 2002-06-04 Rohm And Haas Company Process for generating recoverable sulfur containing compounds from a spent acid stream
WO2003030995A2 (en) 2001-10-11 2003-04-17 Life Mist, Llc Apparatus comprising a pneumoacoustic atomizer
EP1441860A4 (en) * 2001-10-11 2008-06-04 Life Mist Llc APPARATUS COMPRISING A PNEUMO-ACOUSTIC ATOMIZER
EP1441860A2 (en) * 2001-10-11 2004-08-04 Life Mist, LLC Apparatus comprising a pneumoacoustic atomizer
US7047666B2 (en) * 2002-12-20 2006-05-23 Bsh Und Siemeus Hausgeraete Gmbh Clothes dryer and method for utilizing an ultrasound atomizer
US20040134094A1 (en) * 2002-12-20 2004-07-15 Iris Hahn Clothes dryer and method for utilizing an ultrasound atomizer
EP1618964A1 (en) * 2003-03-27 2006-01-25 Ransburg Industrial Finishing KK Coating method and coating machine
US20050136190A1 (en) * 2003-03-27 2005-06-23 Shinji Tani Coating method and atomizer
US7384670B2 (en) * 2003-03-27 2008-06-10 Ransburg Industrial Finishing K.K. Coating method and atomizer
EP1618964A4 (en) * 2003-03-27 2008-09-17 Ransburg Ind Finishing Kk COATING PROCESS AND COATING MACHINE
US20090291401A1 (en) * 2006-08-11 2009-11-26 Mitsubishi Heavy Industries, Ltd. Burner
CN102951616A (zh) * 2012-11-21 2013-03-06 中国寰球工程公司辽宁分公司 废酸裂解炉
CN102951616B (zh) * 2012-11-21 2014-07-02 中国寰球工程公司辽宁分公司 废酸裂解炉
US9724703B2 (en) 2014-06-06 2017-08-08 LLT International (Ireland) Ltd. Systems and methods for processing solid materials using shockwaves produced in a supersonic gaseous vortex
US10137456B1 (en) 2014-06-06 2018-11-27 LLT International (Ireland) Ltd. Reactor configured to facilitate chemical reactions and/or comminution of solid feed materials
US20160303539A1 (en) * 2015-04-17 2016-10-20 LLT International (Ireland) Ltd. Systems and methods for facilitating reactions in gases using shockwaves produced in a supersonic gaseous vortex
US10427129B2 (en) * 2015-04-17 2019-10-01 LLT International (Ireland) Ltd. Systems and methods for facilitating reactions in gases using shockwaves produced in a supersonic gaseous vortex
US10562036B2 (en) 2015-04-17 2020-02-18 LLT International (Irelant) Ltd. Providing wear resistance in a reactor configured to facilitate chemical reactions and/or comminution of solid feed materials using shockwaves created in a supersonic gaseous vortex
US10434488B2 (en) 2015-08-11 2019-10-08 LLT International (Ireland) Ltd. Systems and methods for facilitating dissociation of methane utilizing a reactor designed to generate shockwaves in a supersonic gaseous vortex
US11203725B2 (en) 2017-04-06 2021-12-21 LLT International (Ireland) Ltd. Systems and methods for gasification of carbonaceous materials

Also Published As

Publication number Publication date
JPS5627308B2 (US07754267-20100713-C00021.png) 1981-06-24
FR2203289A5 (US07754267-20100713-C00021.png) 1974-05-10
JPS4994567A (US07754267-20100713-C00021.png) 1974-09-07
GB1453473A (en) 1976-10-20

Similar Documents

Publication Publication Date Title
US4102651A (en) Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces
US3908904A (en) Ultrasonic atomizer for waste sulfuric acid and use thereof in acid cracking furnaces
US4103827A (en) Method of and apparatus for generating mixed and atomized fluids
US4473185A (en) Method and device for producing microdroplets of fluid
US7674449B2 (en) Process and apparatus for the combustion of a sulfur-containing liquid
US3613333A (en) Process and apparatus for cleaning and pumping contaminated industrial gases
US4416421A (en) Highly concentrated supersonic liquified material flame spray method and apparatus
KR970005401A (ko) 액상 제품 분무 방법 및 장치
US3832121A (en) Fuel injector for blast furnace
US1856679A (en) Apparatus for comminuting metals
US5372857A (en) Method of high intensity steam cooling of air-cooled flame spray apparatus
US3723068A (en) Apparatus for the preparation of sulfur dioxide
JPH02131121A (ja) 煙道ガスから窒素酸化物を除去する方法及びその方法を実行するための装置
JPS5939364A (ja) 二成分噴霧ノズル
SE8500971D0 (sv) Method of atomization of melt from a closely coupled nozzle, apparatus and product formed
US2417386A (en) Atomization of strong sulfuric acid
DE3271247D1 (en) Apparatus for the manufacture of alkali metal polyphosphates from alkali metal phosphate solutions or suspensions
JPS5837246B2 (ja) 硫黄燃焼炉
US3606540A (en) Analysis of molten materials
ES8406375A1 (es) Procedimiento e instalacion para la preparacion de polifosfatos de metales alcalinos
US3341131A (en) Liquid fuel burner having plural whirl patterns of varying radii
WO2019146348A1 (ja) 噴霧ノズル及び噴霧方法
DE2256442A1 (de) Ultraschallzerstaeuber fuer die zerstaeubung von abfallschwefelsaeure und mit diesen ultraschallzerstaeubern ausgestattete saeurespaltoefen
US912500A (en) Acetylene-blowpipe.
SU661189A1 (ru) Пневматическа форсунка

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAVY MCKEE AKTIENGESELLSCHAFT

Free format text: CHANGE OF NAME;ASSIGNOR:DAVY INTERNATIONAL AKTIENGESELLSCHAFT;REEL/FRAME:003907/0606

Effective date: 19810515