公开(公告)号：US3676060A

公开(公告)日：1972-07-11

申请号：US3676060D

申请日：1970-02-02

Applicant: MONTEDISON SPA

Inventor： BEDETTI GIANFRANCO

IPC: C01G23/07 ,  B05B7/10 ,  B01J1/00 ,  C01G23/04

CPC classification number: C01G23/07 ,  C01P2004/62 ,  C01P2006/60

Abstract: APPARATUS FOR THE COMBUSTION OF TITANIUM TETRACHLORIDE WITH OXYGEN TO TITANIUM DIOXIDE INTO A REACTION CHAMBER, THE APPARATUS COMPRISES A TUBULAR CYLINDRICAL VORTEX CHAMBER WITH AN OUTLET AND EQUIPPED WITH A FLARE TOWARDS THE REACTION CHAMBER; A FEEDING DEVICE FOR THE VORTEX CHAMBER CONSISTING OF THREE DUCTS COAXIAL ONE WITH EACH OTHER AND WITH THE VORTEX CHAMBER, THE INNER ONE OF SAID DUCTS FEEDING ONE OF TWO AUXILIARY REACTANTS HAS NO SWIRL DEVICES, THE MIDDLE ONE, FEEDING A SECOND AUXILIARY REACTANT IS EQUIPPED WITH A SWIRL DEVICE. THE COAXIAL FLARE ENDING IN THE REACTION CHAMBER DIVERGES IN ITS LAST PART FROM THE TUBULAR BODY OF AN ANGLE COMPRISED BETWEEN 10* AND 45*. THE RATIO OF THE LENGTH OF THE CONICAL FLARE VERSUS THE DIAMETER OF THE TUBULAR BODY IS BETWEEN 0.15 AND 1. THE RATIO BETWEEN THE LENGTH OF THE VORTEX CHAMBER AND THE DIAMETER OF SAID CHAMBER IS BETWEEN 0 AND 3. THE RATIO OF THE LENGTH OF THE PORTION OF THE DUCT WHERE THE MIXING OF THE AUXILIARY REACTING SUBSTANCES OCCURS, AND THE DIAMETER OF THE DUCT IS BETWEEN 2 AND 10.

公开(公告)号：US3462250A

公开(公告)日：1969-08-19

申请号：US3462250D

申请日：1965-07-02

Applicant: MONTEDISON SPA

Inventor： BEDETTI GIANFRANCO

IPC: C10G9/38 ,  C01B3/36 ,  C10G11/22 ,  F23D11/10 ,  C01B2/14

CPC classification number: F23D11/107 ,  C01B3/363 ,  F23D2900/11101

公开(公告)号：US3914396A

公开(公告)日：1975-10-21

申请号：US31212372

申请日：1972-12-04

Applicant: MONTEDISON SPA

Inventor： BEDETTI GIANFRANCO ,  PIERI GIOVANNI ,  DUCATO ALDO ,  HELD LLEWELLYN JOHN

IPC: C01G23/07 ,  C01B13/22 ,  C09C1/00 ,  C09C1/36 ,  C01G23/04

CPC classification number: C01B13/22 ,  C01P2004/62 ,  C01P2006/10

Abstract: Method for producing pigment quality titanium dioxide of controlled particle size by reacting gaseous titanium tetrachloride with an oxygen-containing gas in a reactor having a cylindrical duct, a coaxial cylindrical reaction chamber of diameter greater than the diameter of the duct and spaced below the duct and a frusto-conical divergent duct connecting the cylindrical duct to the reaction chamber, wherein the oxygencontaining gas is introduced through the cylindrical duct and the titanium tetrachloride is introduced into the frusto-conical section of the reactor at a variably selectable location therein.

Abstract translation: 通过在具有圆柱形导管的反应器中使气态四氯化钛与含氧气体反应生产颜料质量二氧化钛的方法，所述反应器具有直径大于管道直径并在管道下方间隔开的同轴圆柱形反应室， 将圆柱形管道连接到反应室的截头圆锥形发散管道，其中含氧气体通过圆柱形管道引入，并且四氯化钛在其中的可变选择位置被引入反应器的截头圆锥形部分。

公开(公告)号：US3552920A

公开(公告)日：1971-01-05

申请号：US3552920D

申请日：1967-08-11

Applicant: MONTEDISON SPA

Inventor： BEDETTI GIANFRANCO

IPC: C01G23/07 ,  C01G23/04

CPC classification number: C01G23/07 ,  C01P2004/62 ,  C01P2006/60

Abstract: DESCRIBED ARE A PROCESS AND APPARATUS FOR THE COMBUSTION FO TITANIUM TETRACHLORIDE WITH OXYGEN TO TITANIUM DIOXIDE. THE PROCESS IS CHARACTERIZED BY: (A) TWO GAS STREAMS ARE FED INTO THE REACTION ZONE: (1) A FIRST STREAM FORMED BY A MIXTURE OF TITANIUM TETRACHLORIDE, OXYGTEN AND EVENTUALLY NUCLEANT AND RUTILIZING SUBSTANCES; (2) A SECOND STREAM, CONCENTRICALLY ENVELOPED BY THE FIRST ONE AND CONTAINING AN AUXILIARY FUEL AND OXYGEN, TOTALLY OR PARTIALLY PREMIXED; (B) TO BOTH STREAMS, OR ONLY TO THE INNER ONE, A SWIRLFLOW IS IMPRESSED WITH SUCH AN INTENSITY THAT THEY LEAVE THE BURNER TO REACH THE REACTION ZONE AS AN ANNULAR JET OR A GASEOUS FILM WHICH ENCLOSES A CENTRAL RECIRCULATION COMPLETELY IMMERSED IN THE RESULTING STREAM LEAVING THE BURNER.

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