WO2006135272A1 - Installation de synthese de dioxyde de titane et reacteur plasmochimique - Google Patents

Installation de synthese de dioxyde de titane et reacteur plasmochimique Download PDF

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Publication number
WO2006135272A1
WO2006135272A1 PCT/RU2006/000185 RU2006000185W WO2006135272A1 WO 2006135272 A1 WO2006135272 A1 WO 2006135272A1 RU 2006000185 W RU2006000185 W RU 2006000185W WO 2006135272 A1 WO2006135272 A1 WO 2006135272A1
Authority
WO
WIPO (PCT)
Prior art keywords
titanium dioxide
synthesis
nozzles
cyclone
outlet
Prior art date
Application number
PCT/RU2006/000185
Other languages
English (en)
Russian (ru)
Inventor
Mikhail Alexeevich Gorovoi
Yury Mikhailovich Gorovoi
Andrei Stanislavovich Klyamko
Alexandr Alexandrovich Pranovich
Viktor Ivanovich Vlasenko
Vladimir Viktorovich Korzhakov
Original Assignee
Mikhail Alexeevich Gorovoi
Yury Mikhailovich Gorovoi
Andrei Stanislavovich Klyamko
Pranovich Alexandr Alexandrovi
Viktor Ivanovich Vlasenko
Vladimir Viktorovich Korzhakov
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 RU2005118051/15A external-priority patent/RU2305660C2/ru
Priority claimed from RU2005118054/06A external-priority patent/RU2289893C1/ru
Application filed by Mikhail Alexeevich Gorovoi, Yury Mikhailovich Gorovoi, Andrei Stanislavovich Klyamko, Pranovich Alexandr Alexandrovi, Viktor Ivanovich Vlasenko, Vladimir Viktorovich Korzhakov filed Critical Mikhail Alexeevich Gorovoi
Priority to EA200702654A priority Critical patent/EA012534B1/ru
Priority to UAA200714751A priority patent/UA87605C2/uk
Publication of WO2006135272A1 publication Critical patent/WO2006135272A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/07—Producing by vapour phase processes, e.g. halide oxidation
    • 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
    • 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
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • 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
    • B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0869—Feeding or evacuating the reactor
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0871—Heating or cooling of the reactor
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873—Materials to be treated
    • B01J2219/0881—Two or more materials
    • B01J2219/0883—Gas-gas

Definitions

  • the invention relates to the production of powder materials and can be used to produce titanium dioxide by chloride technology.
  • the prior art installation for the synthesis of titanium dioxide by chloride technology containing serially connected plasmatron connected to a source of oxygen or oxygen-containing gas, a plasma-chemical reactor associated with a flow capacity of titanium tetrachloride, a quenching chamber, a heat exchanger and a unit for the synthesis of synthesis products consisting of a cyclone and filter (RU 2057714 Cl, CO1G23 / 047, 1996).
  • the main disadvantage of the known solution is the constant clogging of the heat exchanger and the cyclone with titanium dioxide deposits, requiring production stops for cleaning, and the presence of several discharge points of titanium dioxide, which complicates the design and reduces the overall performance of the installation.
  • a plasma chemical reactor for producing titanium dioxide using chloride technology comprising an axisymmetric housing with water-cooled walls and an outlet in the lower part, a plasma generator located in the upper part of the housing, and nozzles for introducing reagents installed in the middle of the housing, the nozzles of which are directed into the side of the outlet, (RU 2052908 Cl, H05H1 / 42, 1996; WO 97/19895 Al 5 H05H1 / 42, 1997).
  • the invention is aimed at improving the efficiency and reliability of the installation for the synthesis of titanium dioxide and improving the operational characteristics of the plasma chemical reactor by eliminating the formation of growths on the wall of the reactor in the zone of the spray jet nozzles of the starting reagents.
  • the inlet port of dusty gas in the bag filter of the synthesis product separation unit is connected to the outlet pipe of the cyclone, and the outlet nozzle of the captured particles is connected by a transport line to the peripheral zone of the upper part of the cylindrical body of the cyclone, which is made with a conical bottom equipped with pneumatic transport means of titanium dioxide.
  • an annular nozzle is made on the casing wall in the form of a wall annular channel directed coaxially to the outlet the housing flange and the inner wall of the annular collector for entering the protective gas, provided with uniformly spaced tangential holes, wherein the outlet section plane of the ring the nozzle is located below the level of the output sections of the nozzle nozzles uniformly installed around the circumference at a distance
  • Di is the diameter of the body
  • the placement of one central nozzle is coaxial in the middle zone of the vessel.
  • the plasma generator - the plasmatron can be made with cathode and anode nodes, which are installed at an angle to each other and are equipped with oxygen supply pipes.
  • annular nozzle with an annular collector located below the level of the outlet sections of the nozzle nozzles at a distance ensures the formation of a thin layer of a gas curtain in the form of a vortex flow of protective gas at the wall of the reactor vessel below the level of nozzle placement, which prevents contact of unreacted reagent droplets with the wall and growths, but the small thickness of which eliminates the negative impact on the course of processes in the reactor cavity.
  • the claimed design of the cyclone with the presence of a stilling chamber improves the efficiency of the deposition of fine fractions of titanium dioxide powder to 82 ⁇ 97%.
  • the connection of the outlet pipe of the trapped bag filter particles to the peripheral zone of the upper part of the cylindrical cyclone body reduces the number of discharge points of titanium dioxide, which also simplifies the design and improves the reliability of the installation.
  • the installation (Fig. 1) contains a plasma torch 1 connected in series to which an oxygen source 2 is connected, a plasma-chemical reactor 3, which is connected to a supply tank 4 through a titanium tetrachloride feed pump 5, a quenching chamber 6 equipped with an air-pulse generator 7, and a heat exchanger 8, which is made monotube type "in the form of a straight pipe or rectangular coils of straight pipes with smoothly rounded mates and coaxially - is directly connected by the inlet section to the radial outlet pipe 9 of the quenching chamber 6, and the synthesis product separation unit 10, including a cyclone 11, the tangential inlet pipe 12 of which is connected to heat exchanger 8, and a bag filter 13.
  • the exhaust shaft 14 of the air-pulse generator 7 is installed in the wall of the lower part of the cylindrical body of the quenching chamber 6 coaxially and diametrically opposite the radial outlet the nipple 9 and, accordingly, the inlet section of the heat exchanger 8.
  • the cyclone 11 is made with an axisymmetric conical-cylindrical soothing chamber 15, the maximum diameter of which “d” is from 0.1 to 0.7 from the diameter “D” of the cylindrical body, in the conical bottom which is installed pneumatic vehicle 16.
  • the outlet pipe 17 of the cyclone 11 is connected to the inlet pipe 18 of dusty gas bag filter 13, the outlet pipe 19 of the captured particles which is connected by a transport line 20 (screw conveyor) with a peripheral upper part of the cylindrical body of the cyclone 11.
  • Plasma-chemical reactor 3 (Fig. 2, 3 and 4) contains a housing composed of a water-cooled upper part 21, in which the cathode and anode nodes 22 and 23 of the two-jet plasma generator - plasmatron 1, and the lower part 24 with an outlet 25 are installed, and placed in the middle zone of the housing (lower upper part 21), nozzles 26 for introducing reagents with nozzles 27 for introducing liquid titanium tetrachloride, nozzles of which are oriented towards the outlet 25.
  • Di is the diameter of the body
  • the claimed invention is as follows.
  • nodes of the plasma generator - plasma torch 1 from the source 2 serves oxygen, which in the arc of the plasma torch 1 is heated to a plasma state.
  • jets of oxygen plasma enter the inner cavity of the upper part 21 of the body of the plasma chemical reactor 3, where a stream of oxygen plasma is formed, which fills the entire cross-sectional area of the body, and, flowing around the nozzle 26, is directed to the outlet 25.
  • liquid titanium tetrachloride (TiCl 4 ) is fed under pressure from a supply tank 4 by means of a pump 5, and in a ring the manifold 28 through the nozzle 33 supplies protective gas - oxygen, while the oxygen jets flowing through the tangential openings 31 of the annular collector 28 are twisted and directed tangentially to the wall of the reactor vessel, and the shoulder 29 prevents the spread of oxygen jets in the radial direction deep into the cavity of the reactor.
  • Nozzles 26 atomize titanium tetrachloride, the atomization torch mixes with oxygen plasma to form a reactive stream in which titanium tetrachloride is vaporized and vapor is oxidized to titanium dioxide.
  • the protective gas - oxygen flowing from the annular nozzle 32 in the axial direction forms a thin vortex layer of the gas curtain in the zone of the spray nozzle 26 of the nozzles, preventing large drops of titanium tetrachloride from falling onto the reactor vessel wall, which do not have time to evaporate and can form upon contact with the wall of the reactor vessel solid growths, which increases the stability and reliability of the reactor, improves the performance of the installation for the synthesis of titanium dioxide and increase quality of the resulting product.
  • reaction products coming out of reactor 3 titanium dioxide synthesis, which are a dust and gas stream — a gas suspension of titanium dioxide particles 0.2–1.0 ⁇ m in chlorine gas consisting of chlorine and excess oxygen, enters the quenching chamber 6, where their partial cooling and deposition of a large fraction of titanium dioxide, which accumulates in the hopper 34 of the large fraction attached to the conical bottom of the cylindrical body of the quenching chamber 6, and then sent for processing. Dust-gas flow of reaction products from the quenching chamber 6 through the radial outlet pipe 9 is sent to a straight-line inlet section of the heat exchanger 8, in which they are finally cooled.
  • Chlorine gas from the bag filter 13 is supplied to the consumer, and the captured titanium dioxide from the outlet pipe 19 of the captured particles is sent via the transport line 20 (screw conveyor) to the peripheral zone of the upper part of the cylindrical body of the cyclone 11. Small particles of titanium dioxide deposited in the conical bottom of the cyclone 11 pneumatic vehicle 16 is passed for further processing.
  • G is the mass flow rate of the cooled medium through the channel, kg / s;
  • F is the cross-sectional area of the heat exchanger channel
  • p is the density of the medium to be cooled, kg
  • u is the flow rate of the cooled medium
  • the presence of blockages in the channel of the heat exchanger 8 occurs at pu ⁇ 5 kg / m s, but at pu> 80 kg / m s the hydraulic resistance of the heat exchanger 8 sharply increases.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

L'installation de synthèse de dioxyde de titane comprend un plasmotron, relié à une source d'oxygène, un réacteur plasmochimique, relié à une cuve de consommation de tétrachlorure de titane, une chambre de trempage, munie d'un générateur à pneumo-impulsions monté dans la partie inférieure, un échangeur de chaleur de type 'un tube dans l'autre', raccordé de manière coaxiale et directe à une tubulure de sortie radiale de la chambre de trempage, un cyclone avec une chambre de repos et un filtre. Dans la zone médiane du carter du réacteur plasmochimique on a monté des buses d'injection de tétrachlorure de titane, en dessous du niveau desquelles on a monté une buse circulaire qui se présente comme un canal annulaire adjacent à la paroi, qui possède un collecteur annulaire destiné à l'injection d'un gaz de protection, à savoir de l'oxygène qui forme une mince couche tourbillonnaire de protection d'un rideau de gaz.
PCT/RU2006/000185 2005-06-14 2006-04-13 Installation de synthese de dioxyde de titane et reacteur plasmochimique WO2006135272A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EA200702654A EA012534B1 (ru) 2005-06-14 2006-04-13 Установка для синтеза диоксида титана и плазмохимический реактор
UAA200714751A UA87605C2 (uk) 2005-06-14 2006-04-13 Установка для синтезу діоксиду титану

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2005118054 2005-06-14
RU2005118051 2005-06-14
RU2005118051/15A RU2305660C2 (ru) 2005-06-14 2005-06-14 Установка для синтеза диоксида титана и способ синтеза диоксида титана
RU2005118054/06A RU2289893C1 (ru) 2005-06-14 2005-06-14 Плазмохимический реактор

Publications (1)

Publication Number Publication Date
WO2006135272A1 true WO2006135272A1 (fr) 2006-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2006/000185 WO2006135272A1 (fr) 2005-06-14 2006-04-13 Installation de synthese de dioxyde de titane et reacteur plasmochimique

Country Status (4)

Country Link
KR (1) KR100982608B1 (fr)
EA (1) EA012534B1 (fr)
UA (1) UA87605C2 (fr)
WO (1) WO2006135272A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2493750A (en) * 2011-08-17 2013-02-20 Edwards Ltd Apparatus for treating a gas stream
CN107265500A (zh) * 2016-08-31 2017-10-20 湖北智权专利技术应用开发有限公司 一种氢氧火焰水解法制备高纯度纳米二氧化钛的装置
CN110817953A (zh) * 2019-10-29 2020-02-21 山东鲁北企业集团总公司 一种氧化反应器的防疤和除疤***及其方法
CN111389196A (zh) * 2020-03-24 2020-07-10 安吉旺能再生资源利用有限公司 烟气低温等离子协同处理方法及其***
CN114307897A (zh) * 2021-12-17 2022-04-12 瑞彩科技股份有限公司 一种易于调节温度的四氯化钛加工用除杂装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020188344A1 (fr) * 2019-03-21 2020-09-24 Abenz 81-40 Dispositif et procede pour le traitement de matiere fractionnee par plasma a temperatures intermediaires

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891562A (en) * 1972-10-13 1975-06-24 Aga Ab Arrangement in a reactor for plasma-chemical processes
WO1997019895A1 (fr) * 1995-11-27 1997-06-05 Volgogradskoe Otkrytoe Aktsionernoe Obschestvo 'khimprom' Procede de production de dioxyde de titane et reacteur chimico-plasmique pour la mise en oeuvre de ce procede
RU2214296C1 (ru) * 2002-05-21 2003-10-20 Брук Александр Мордухович Пневмоимпульсный генератор
RU2252817C1 (ru) * 2003-12-23 2005-05-27 Институт проблем химической физики Российской Академии наук Установка и способ получения нанодисперсных порошков в плазме свч разряда

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891562A (en) * 1972-10-13 1975-06-24 Aga Ab Arrangement in a reactor for plasma-chemical processes
WO1997019895A1 (fr) * 1995-11-27 1997-06-05 Volgogradskoe Otkrytoe Aktsionernoe Obschestvo 'khimprom' Procede de production de dioxyde de titane et reacteur chimico-plasmique pour la mise en oeuvre de ce procede
RU2214296C1 (ru) * 2002-05-21 2003-10-20 Брук Александр Мордухович Пневмоимпульсный генератор
RU2252817C1 (ru) * 2003-12-23 2005-05-27 Институт проблем химической физики Российской Академии наук Установка и способ получения нанодисперсных порошков в плазме свч разряда

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2493750A (en) * 2011-08-17 2013-02-20 Edwards Ltd Apparatus for treating a gas stream
US9512518B2 (en) 2011-08-17 2016-12-06 Edwards Limited Apparatus for treating a gas stream
CN107265500A (zh) * 2016-08-31 2017-10-20 湖北智权专利技术应用开发有限公司 一种氢氧火焰水解法制备高纯度纳米二氧化钛的装置
CN107265500B (zh) * 2016-08-31 2019-06-07 湖北智权专利技术应用开发有限公司 一种氢氧火焰水解法制备高纯度纳米二氧化钛的装置
CN110817953A (zh) * 2019-10-29 2020-02-21 山东鲁北企业集团总公司 一种氧化反应器的防疤和除疤***及其方法
CN110817953B (zh) * 2019-10-29 2022-02-18 山东鲁北企业集团总公司 一种氧化反应器的防疤和除疤***及其方法
CN111389196A (zh) * 2020-03-24 2020-07-10 安吉旺能再生资源利用有限公司 烟气低温等离子协同处理方法及其***
CN114307897A (zh) * 2021-12-17 2022-04-12 瑞彩科技股份有限公司 一种易于调节温度的四氯化钛加工用除杂装置
CN114307897B (zh) * 2021-12-17 2024-02-20 瑞彩科技股份有限公司 一种易于调节温度的四氯化钛加工用除杂装置

Also Published As

Publication number Publication date
EA012534B1 (ru) 2009-10-30
UA87605C2 (uk) 2009-07-27
KR100982608B1 (ko) 2010-09-15
EA200702654A1 (ru) 2008-08-29
KR20080036036A (ko) 2008-04-24

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