WO1994002680A1 - Photoreacteur a hydrocyclone - Google Patents

Photoreacteur a hydrocyclone Download PDF

Info

Publication number
WO1994002680A1
WO1994002680A1 PCT/US1993/001974 US9301974W WO9402680A1 WO 1994002680 A1 WO1994002680 A1 WO 1994002680A1 US 9301974 W US9301974 W US 9301974W WO 9402680 A1 WO9402680 A1 WO 9402680A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
recited
vortex
εaid
practiced
Prior art date
Application number
PCT/US1993/001974
Other languages
English (en)
Inventor
Bruno S. Marcoccia
J. W. Chamblee
Original Assignee
Kamyr, Inc.
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 Kamyr, Inc. filed Critical Kamyr, Inc.
Publication of WO1994002680A1 publication Critical patent/WO1994002680A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • D21B1/325—Defibrating by other means of waste paper de-inking devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/224—Use of means other than pressure and temperature
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00—Digesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1015—Bleaching ; Apparatus therefor with use of means other than pressure, temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C02F2101/327—Polyaromatic Hydrocarbons [PAH's]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/32—Details relating to UV-irradiation devices
    • C02F2201/322—Lamp arrangement
    • C02F2201/3223—Single elongated lamp located on the central axis of a turbular reactor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the parent applications describe methods and apparatus for chemically and/or physically reacting different types of fluids.
  • a slurry or liquid with a reactive gas or liquid in such a way as to provide rapid intimate contact, to provide the fastest reaction that is practical.
  • the methods and apparatus of the parent applications can be used to react caustic solutions, sulfur dioxide solutions, and spent alkaline bleach plant liquors with chlorine and chlorine dioxide, or for reacting kraft mill white, green, and black liquors with an oxygen containing gas, or reacting various types of cellulose pulp, including virgin or recycled kraft pulp, TMP, ⁇ ulfite pulp, and CTMP pulp with ozone, or like treatment gases.
  • the invention is particularly applicable to reactions in which ultraviolet light is a catalyst or other important component for reaction of dissolved solids in a liquid, for the bleaching of pulp, or for a wide variety of other uses.
  • the electromagnetic radiation may be supplied by itself, although preferably a reactive fluid, such as a bleaching chemical, is utilized in conjunction with the electromagnetic radiation.
  • va ⁇ te water purification for example removing color and chlorinated organic compounds (AOX) from bleach plant effluents utilizing ultraviolet light, and oxygen, ozone, hydrogen peroxide, and/or chlorine dioxide, or deodorizing, disinfecting and neutralizing hazardous pollutants in industrial waste and wastewater streams
  • AOX color and chlorinated organic compounds
  • photo-oxidative bleaching of kraft pulps for example removing color and chlorinated organic compounds (AOX) from bleach plant effluents utilizing ultraviolet light, and oxygen, ozone, hydrogen peroxide, and/or chlorine dioxide, or deodorizing, disinfecting and neutralizing hazardous pollutants in industrial waste and wastewater streams
  • photo-oxidative bleaching of kraft pulps for example removing color and chlorinated organic compounds (AOX) from bleach plant effluents utilizing ultraviolet light, and oxygen, ozone, hydrogen peroxide, and/or chlorine dioxide, or deodorizing, disinfecting and neutralizing hazardous pollutants in industrial waste and wastewater streams
  • photo-oxidative bleaching of kraft pulps for example removing
  • a method of effecting electromagnetic radiation induced reaction of a first non-gas fluid comprises the following steps: (a) Introducing the first fluid into a first end of a vortex, having an exterior, and a central interior, the vortex action being minimal at the central interior. (b) Introducing electromagnetic radiation into the first fluid from the central interior of the vortex to cause a perceptible change in the first fluid. And, (c) removing treated first fluid from the second end of the vortex.
  • step (d) coincident with step (b), of introducing a reactive fluid into the first fluid in the vortex from the exterior of the vortex, the combination of reactive fluid and electromagnetic radiation causing a perceptible change in the first fluid.
  • Step (b) is preferably practiced by introducing ultraviolet light radiation into the first fluid, such as from a mercury arc lamp.
  • the reactive fluid is a treatment gas
  • any residual treatment gas may be removed from the first end of the vortex.
  • the method is practiced on liquids, slurries (such as cellulose pulp having a consistency of about 1-8%) or the like, typically, but not necessarily, related to the production of cellulose pulp.
  • the invention also includes a method comprising the steps of: (a) Establishing a flow path of the first fluid in which the first fluid has a large surface area to volume ratio. (b) Effecting movement of the first fluid in the flow path to provide a large surface renewal rate. And, (c) causing reactant fluid and electromagnetic radiation to pass into the first fluid in the flow path in generally opposite directions.
  • a fluid treatment device comprises: A main body defining an interior hollow vortex chamber having a first end, a second end, and a central axis.
  • the main body of the fluid treatment device preferably comprises an interior porous wall defining the vortex chamber, with means for introducing a fluid (e.g. gas) through the interior porous wall.
  • the interior porous wall is typically a surface of revolution, such as a cylinder or a cone.
  • the means for generating electromagnetic radiation preferably comprises a mercury arc lamp having an elongated transparent (e.g. quartz) tube, a high pressure glass bulb containing mercury and mounted within the tube, and a pair of electrodes attached to the bulb.
  • the mercury arc lamp also includes a non-reactive gas (e.g. nitrogen) purge system for the tube.
  • the means for mounting the mercury arc lamp comprises a pedestal having a plurality of hollow legs extending from it, and connected to the second end of the main body. The legs straddle the treated fluid outlet but do not interfere with the passage of treated fluid through it.
  • FIGURE 1 is ⁇ longitudinal view, partly in cross-section and partly in elevation, of an exemplary fluid treatment device according to the present invention
  • FIGURE 2 is a longitudinal view, partly in cross-section and partly in elevation, of a mercury arc lamp utilized in the device of• FIGURE 1;
  • FIGURE 3 is a top plan view of the mercury arc lamp of FIGURE 2.
  • FIGURE 4 is a bottom plan view of the mercury arc lamp of FIGURE 2 with mounting structures, the electrical cords and nitrogen purge not being shown.
  • the most basic apparatus according to the present invention is a form of gas sparged hydrocyclone such as shown in parent application serial no. 07/573,978 filed August 28, 1990.
  • the device 10 comprises a main body 11 defining a hollow interior vortex chamber 12 having a first end 13, a second end 14, and a central axis 15.
  • a tangential fluid inlet 16 is provided at the first end 13, remote from the central axis 15 for introducing non-gas fluid (e.g. a liquid, liquid slurry, or liquid solution) with a whirling action so that a vortex is established in the chamber 12.
  • a treated fluid outlet 17 extends from the second end 14 of the vortex chamber 12.
  • the main body 11 includes an exterior wall 18, and a porous interior wall 19, a space 20 being defined between them.
  • Means are provided, such as the inlet 21, for introducing a treatment fluid (typically a treatment gas, but also possibly a treatment liquid) into the space 20, to pass through the porous wall 19 radially inwardly into the vortex chamber 12.
  • the porous wall 19 typically is a surface of revolution, such as a cylinder, cone, or the like.
  • an outlet 23 for residual gas is provided at the first end 13 of the body 11, along the central axis 15.
  • An optional, tangential, second outlet 24 adjacent the bottom 14 of the body 11 also may be provided, if desired.
  • means 26 for generating electromagnetic radiation are provided within the vortex chamber 12.
  • the means 26 preferably comprises a UV light source laser, or — as illustrated — a mercury arc lamp or a laser operating in the appropriate wavelength (e.g. UV), and means — shown generally by reference numeral 27 in FIGURE 1 — are provided for mounting the means (e.g. lamp) 26 substantially along the central axis 15 within the vortex chamber 12.
  • the means 27 preferably comprises a pedestal 28 having a plurality (e.g. three -- see FIGURES 1 and 4) of legs 29 connected to the bottom 14 of the main housing 11 for supporting the lamp 26.
  • one or more radially extending arms may be provided at the top of the electromagnetic radiation generating means 26 for stabilizing it within the vortex chamber 12.
  • FIGURES 2 and 3 An exemplary mercury arc lamp according to the present invention is illustrated at reference numeral 26 in FIGURES 2 and 3, and the pedestal 28 thereof, with dependent legs 29, is illustrated in FIGURE 4.
  • the mercury arc lamp 26 preferably comprises an elongated transparent tube 32 (e.g. a quartz well), with a high pressure glass bulb 33 mounted within it.
  • the bulb 33 contains mercury, shown schematically at 34 in FIGURE 2, only a small amount of mercury being necessary.
  • Electrodes 35, 36 are connected to the bulb 33 to supply an arc which excites the mercury and generates ultraviolet light.
  • Electrical cords 37, 38 lead from the electrodes 35, 36 to a source of electric power (see 39 in FIGURE 1).
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a gas purge system including a non-reactive gas such as nitrogen.
  • a hollow nipple 40 may be provided connected by conduit 41 to a source of nitrogen gas (42 in FIGURE 1).
  • the legs 29 extending from the pedestal 28 preferably are hollow, and the electrical wires 37, 38 in the purge gas conduit 41 may extend through them.
  • three hollow legs 29 — as seen in FIGURE 4 — may be provided, equally spaced around the periphery of the pedestal 28, and each containing either a wire 37, 38 or the purge gas conduit 41.
  • the non-gas fluid may be a liquid or a slurry, typical (but by no means exclusive) liquids being waste water liquids, such as liquids containing color and/or AOX, such as bleach plant effluents from cellulose pulp producing facilities; or cellulose pulps, of all different grades, and both virgin and recycled fibers, including kraft pulps, and typically having a solids consistency of about 1-8%, and even including fully bleached pulps.
  • waste water liquids such as liquids containing color and/or AOX, such as bleach plant effluents from cellulose pulp producing facilities; or cellulose pulps, of all different grades, and both virgin and recycled fibers, including kraft pulps, and typically having a solids consistency of about 1-8%, and even including fully bleached pulps.
  • the first fluid as shown by arrow 45 in FIGURE 1 -- is tangentially introduced into the vortex chamber 12 through the tangential inlet 16, establishing a vortex -- shown schematically by line 46 in FIGURE 1 — within the chamber 12.
  • Electromagnetic radiation such as ultraviolet light from the mercury arc lamp 26 — is introduced into the whirling fluid in the vortex 46, passing radially outwardly from the interior of the vortex 46 (that is from the central axis 15).
  • the treated fluid is removed — as indicated by arrow 47 in FIGURE 1 — from the outlet 17 of the second end of the body 11.
  • a reactant chemical is also introduced into the fluid within the vortex 46.
  • Typical reactant fluids include ozone, oxygen, and/or chlorine dioxide; and oxygen, ozone, chlorine dioxide, hydrogen peroxide or chlorine.
  • the first set of chemicals is typically used for removal of color and AOX from bleach plant effluents using ultraviolet radiation, while the second set of chemicals is used for the photo-oxidative bleaching of kraft pulps.
  • reacting chemicals may also be used for the fiber surface treatment of all grades of cellulose pulp, or for the de-halogenation of chlorinated organic compounds and fully bleached pulps, such as kraft pulps.
  • the vortex action results in extremely effective treatment, combining thin film irradiation (that is with large surface area to volume ratios) with the radial mixing of irradiated substrates (that is large surface renewal rates), while the radiation passes "counter-current" to the reactant chemical in the thin film.
  • a flow path of the fluid is established in which the fluid has a large surface area to volume ratio (vortex 46); the fluid is moved in the flow path to provide a large surface renewal rate (inherently occurring, due to radial mixing, in the vortex 46); and reactant fluid (treatment gas through inlet 21) and electromagnetic radiation (e.g. ultraviolet light from mercury arc lamp 26) pass into the fluid in the flow path (vortex 46) in generally opposite directions, achieving optimum treatment of the fluid.
  • reactant fluid treatment gas through inlet 21
  • electromagnetic radiation e.g. ultraviolet light from mercury arc lamp 26

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

On peut traiter des fluides non gazeux (45), tels qu'une pâte de cellulose épaisse (par exemple de la pâte kraft), des liquides contenant des particules solides dissoutes et autres, au moyen d'un rayonnement électromagnétique, tel qu'un rayonnement ultraviolet provenant d'une lampe à arc au mercure ou d'une source de lumière ultraviolette à laser. Le fluide à traiter (45) est introduit dans la première extrémité d'un tourbillon et le rayonnement électromagnétique (26) est introduit dans le fluide à partir de l'axe central du tourbillon. Un fluide réactif, tel qu'un gaz ou un liquide de blanchiment (21), est généralement aussi introduit dans le fluide à l'intérieur du tourbillon depuis l'extérieur de ce dernier. Le traitement s'effectue dans les conditions suivantes: un rapport élevé superficie/volume, un taux élevé de renouvellement de surface et le passage de la lumière ultraviolette dans la direction opposée du fluide réactif, ce qui permet d'obtenir un traitement très efficace.
PCT/US1993/001974 1992-07-24 1993-03-04 Photoreacteur a hydrocyclone WO1994002680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91810292A 1992-07-24 1992-07-24
US918,102 1992-07-24

Publications (1)

Publication Number Publication Date
WO1994002680A1 true WO1994002680A1 (fr) 1994-02-03

Family

ID=25439807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/001974 WO1994002680A1 (fr) 1992-07-24 1993-03-04 Photoreacteur a hydrocyclone

Country Status (1)

Country Link
WO (1) WO1994002680A1 (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998024727A1 (fr) * 1996-12-02 1998-06-11 Z.P.M., Inc. Procede et dispositif multimodaux de traitement d'une solution
WO1999013975A1 (fr) * 1997-09-19 1999-03-25 Calgon Carbon Corporation Procede et appareil ameliores de melanges de fluides
US5908532A (en) * 1996-10-30 1999-06-01 Eka Chemicals, Inc. Method of converting chlorine dioxide present in a gaseous stream from a pulp bleach plant by irradiation to chlorine
US6126841A (en) * 1997-01-03 2000-10-03 Trojan Technologies Inc. Increasing turbulent mixing in a UV system
USRE36896E (en) * 1993-03-05 2000-10-03 Trojan Technologies Inc. Fluid treatment system and process
WO2001092161A1 (fr) * 2000-05-31 2001-12-06 Zpm, Inc. Procede de traitement de liquides consistant a creer une interface photonique de cyclone liquide
WO2004101162A1 (fr) * 2003-05-19 2004-11-25 Ntu Ventures Private Limited Procede et appareil pour desinfecter des fluides au moyen d'un rayonnement electromagnetique pendant leur separation
EP1501366A1 (fr) * 2002-04-30 2005-02-02 Lionel Evans Traitement aux rayons uv de micro-organismes non souhaites
EP1790771A1 (fr) * 2004-06-08 2007-05-30 Nippon Paper Industries Co., Ltd. Méthode pour blanchir de la pâte
US7838845B2 (en) * 2005-11-02 2010-11-23 Kabushiki Kaisha Toshiba Ultraviolet irradiation water treatment apparatus
CN104878637A (zh) * 2015-04-02 2015-09-02 济南大学 一种气流涡旋动能碎浆机
CN104894905A (zh) * 2015-06-02 2015-09-09 济南大学 一种基于三层气流涡旋为搅拌动力的无转子制浆设备
CN104928960A (zh) * 2015-07-02 2015-09-23 济南大学 一种旋向可调的多工况涡旋动能碎浆设备
CN105040497A (zh) * 2015-08-24 2015-11-11 济南大学 一种高压喷气造漩式涡旋动能制浆设备
CN105155320A (zh) * 2015-08-03 2015-12-16 济南大学 一种料液分离且对冲式双空气涡旋动能制浆设备
CN110983847A (zh) * 2019-12-22 2020-04-10 重庆知翔科技有限公司 一种具有高混合效率的废纸脱墨机
US20200139338A1 (en) * 2017-04-18 2020-05-07 Breakthrough Technologies, LLC Sulfur production
CN113880218A (zh) * 2021-10-12 2022-01-04 中南大学 一种利用黄铁矿尾矿的有机染料废水处理系统
SE2230380A1 (en) * 2022-11-24 2024-05-25 Valmet Oy Method for handling filtrates in a process for producing bleached cellulose pulp from recycled textile material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726756A (en) * 1970-12-14 1973-04-10 Gen Fluid Dynamics Int Pulping of woody substances in gaseous media
US3833461A (en) * 1971-05-17 1974-09-03 Bauer Bros Co Cyclonic digester system and process
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726756A (en) * 1970-12-14 1973-04-10 Gen Fluid Dynamics Int Pulping of woody substances in gaseous media
US3833461A (en) * 1971-05-17 1974-09-03 Bauer Bros Co Cyclonic digester system and process
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36896E (en) * 1993-03-05 2000-10-03 Trojan Technologies Inc. Fluid treatment system and process
US5908532A (en) * 1996-10-30 1999-06-01 Eka Chemicals, Inc. Method of converting chlorine dioxide present in a gaseous stream from a pulp bleach plant by irradiation to chlorine
WO1998024727A1 (fr) * 1996-12-02 1998-06-11 Z.P.M., Inc. Procede et dispositif multimodaux de traitement d'une solution
US6126841A (en) * 1997-01-03 2000-10-03 Trojan Technologies Inc. Increasing turbulent mixing in a UV system
US6224759B1 (en) 1997-01-03 2001-05-01 Trojan Technologies, Inc. Increasing turbulent mixing in a UV system
WO1999013975A1 (fr) * 1997-09-19 1999-03-25 Calgon Carbon Corporation Procede et appareil ameliores de melanges de fluides
US6015229A (en) * 1997-09-19 2000-01-18 Calgon Carbon Corporation Method and apparatus for improved mixing in fluids
JP2001516637A (ja) * 1997-09-19 2001-10-02 カルゴン カーボン コーポレーション 流体中の改良された混合方法および装置
JP4664496B2 (ja) * 1997-09-19 2011-04-06 カルゴン カーボン コーポレーション 流体中の改良された混合方法および装置
US6420715B1 (en) 1997-09-19 2002-07-16 Trojan Technologies, Inc. Method and apparatus for improved mixing in fluids
WO2001092161A1 (fr) * 2000-05-31 2001-12-06 Zpm, Inc. Procede de traitement de liquides consistant a creer une interface photonique de cyclone liquide
EP1501366A1 (fr) * 2002-04-30 2005-02-02 Lionel Evans Traitement aux rayons uv de micro-organismes non souhaites
EP1501366A4 (fr) * 2002-04-30 2005-06-29 Lionel Evans Traitement aux rayons uv de micro-organismes non souhaites
US7217358B2 (en) 2002-04-30 2007-05-15 Lionel Evans Ultraviolet radiation treatment of unwanted microorganisms
AU2003222532B2 (en) * 2002-04-30 2008-06-26 Step Sciences Limited Ultraviolet radiation treatment of unwanted microorganisms
WO2004101162A1 (fr) * 2003-05-19 2004-11-25 Ntu Ventures Private Limited Procede et appareil pour desinfecter des fluides au moyen d'un rayonnement electromagnetique pendant leur separation
EP1790771A1 (fr) * 2004-06-08 2007-05-30 Nippon Paper Industries Co., Ltd. Méthode pour blanchir de la pâte
EP1790771A4 (fr) * 2004-06-08 2012-10-03 Jujo Paper Co Ltd Méthode pour blanchir de la pâte
US7838845B2 (en) * 2005-11-02 2010-11-23 Kabushiki Kaisha Toshiba Ultraviolet irradiation water treatment apparatus
CN104878637A (zh) * 2015-04-02 2015-09-02 济南大学 一种气流涡旋动能碎浆机
CN104894905A (zh) * 2015-06-02 2015-09-09 济南大学 一种基于三层气流涡旋为搅拌动力的无转子制浆设备
CN104928960A (zh) * 2015-07-02 2015-09-23 济南大学 一种旋向可调的多工况涡旋动能碎浆设备
CN105155320A (zh) * 2015-08-03 2015-12-16 济南大学 一种料液分离且对冲式双空气涡旋动能制浆设备
CN105040497A (zh) * 2015-08-24 2015-11-11 济南大学 一种高压喷气造漩式涡旋动能制浆设备
US20200139338A1 (en) * 2017-04-18 2020-05-07 Breakthrough Technologies, LLC Sulfur production
US11697103B2 (en) * 2017-04-18 2023-07-11 Breakthrough Technologies, LLC Sulfur production through the use of microwave and ultraviolet light energy
CN110983847A (zh) * 2019-12-22 2020-04-10 重庆知翔科技有限公司 一种具有高混合效率的废纸脱墨机
CN113880218A (zh) * 2021-10-12 2022-01-04 中南大学 一种利用黄铁矿尾矿的有机染料废水处理系统
SE2230380A1 (en) * 2022-11-24 2024-05-25 Valmet Oy Method for handling filtrates in a process for producing bleached cellulose pulp from recycled textile material

Similar Documents

Publication Publication Date Title
WO1994002680A1 (fr) Photoreacteur a hydrocyclone
US6090296A (en) Method and apparatus for UV-oxidation of toxics in water and UV-disinfection of water
US5151252A (en) Chamber design and lamp configuration for an ultraviolet photochemical reactor
US6991735B2 (en) Free radical generator and method
US5587069A (en) Water decontamination apparatus using peroxide photolysis ionizer
US5393419A (en) Ultraviolet lamp assembly for water purification
Shu et al. Decolorization of mono-azo dyes in wastewater by advanced oxidation process: a case study of acid red 1 and acid yellow 23
US5536400A (en) Apparatus for purifying fluids with UV radiation and ozone
JP4932757B2 (ja) 超純水製造方法および超純水製造装置
JP4090241B2 (ja) 液体への電磁波照射装置及び方法
KR101868524B1 (ko) 수처리 장치
KR100392413B1 (ko) 기체및액체의정화방법및장치
JP2008136940A (ja) 紫外線消毒装置
JPH10174983A (ja) オゾンと光触媒を利用した促進酸化処理装置
JPS6410634B2 (fr)
KR20050015949A (ko) 이산화염소의 생성 장치 및 방법
WO2015037258A1 (fr) Dispositif d'irradiation aux ultraviolets
US20230183096A1 (en) UV lamp socket assembly
Edwards Investigation of color removal by chemical oxidation for three reactive textile dyes and spent textile dye wastewater
KR100458075B1 (ko) 오존 강화 시스템
JP2002166270A (ja) 光化学反応装置
KR100492398B1 (ko) 플라즈마와 흡착제를 이용한 정화장치
Masschelein et al. Ozone science & engineering special issue on quality assurance in ozone practice
JP2013158706A (ja) 水浄化装置
KR101868526B1 (ko) 호소 정화 장치

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA FI JP

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA