WO2005030643A1 - Appareil et procede de production de silicate de calcium - Google Patents

Appareil et procede de production de silicate de calcium Download PDF

Info

Publication number
WO2005030643A1
WO2005030643A1 PCT/ZA2004/000114 ZA2004000114W WO2005030643A1 WO 2005030643 A1 WO2005030643 A1 WO 2005030643A1 ZA 2004000114 W ZA2004000114 W ZA 2004000114W WO 2005030643 A1 WO2005030643 A1 WO 2005030643A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
order
slurry
degrees
temperature
Prior art date
Application number
PCT/ZA2004/000114
Other languages
English (en)
Inventor
John Hugo Nellmapius
Original Assignee
John Hugo Nellmapius
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 John Hugo Nellmapius filed Critical John Hugo Nellmapius
Publication of WO2005030643A1 publication Critical patent/WO2005030643A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/24—Alkaline-earth metal silicates
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • B01J8/067—Heating or cooling 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00433—Controlling the temperature using electromagnetic heating
    • B01J2208/0046—Infrared radiation
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00477—Controlling the temperature by thermal insulation means
    • B01J2208/00495—Controlling the temperature by thermal insulation means using insulating materials or refractories
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/0053—Controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00548—Flow
    • B01J2208/00557—Flow controlling the residence time inside the reactor vessel
    • 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
    • B01J2219/00002—Chemical plants
    • B01J2219/00004—Scale aspects
    • B01J2219/00006—Large-scale industrial plants
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00245—Avoiding undesirable reactions or side-effects
    • B01J2219/0027—Pressure relief

Definitions

  • silica microspheres Another source of silica which may be used is silica microspheres, or another source of calcium may be a mixture of calcium oxide and calcium sulphate in varying proportions.
  • calcium silicate is produced in expensive autoclaves to effect the required chemical reaction and the extreme length required, due to the limitation of pressure rating in commercial autoclaves, has led the applicant to investigate apparatus which is not only relatively inexpensive but which will substantially reduce the reaction time.
  • the cured blocks removed from the autoclave require further shaping by having to be cut into the desired forms or sheets resulting in substantial product wastage and labour costs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

L'invention concerne une matière siliceuse et un oxyde ou un hydroxyde de calcium pouvant être mélangés conjointement avec une matière fibreuse, mélangés avec de l'eau afin de former une bouillie, puis pompés de manière continue par l'intermédiaire d'un réacteur tubulaire sous pression (PTA) chauffé à une vitesse prédéterminée et présentant une longueur également prédéterminée. Le réacteur tubulaire est chauffé à une température prédéterminée afin de générer une pression de flux désirée ayant pour résultat la croissance chimique de particules cristallines de wollastonite hydratée synthétique (également connue sous le nom de xonotlite), lesdites particules étant soit extrudées par l'intermédiaire d'une extension du réacteur après refroidissement selon une forme désirée, telle qu'un format de carton ou de feuille, soit séchées à la sortie du réacteur par chauffage d'une vaporisation par l'intermédiaire d'un séchoir éclair et collectées dans un cyclone et un logement sac afin de produire une matière en poudre résistant au feu et thermo-isolante.
PCT/ZA2004/000114 2003-09-29 2004-09-22 Appareil et procede de production de silicate de calcium WO2005030643A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200307548 2003-09-29
ZA2003/7548 2003-09-29

Publications (1)

Publication Number Publication Date
WO2005030643A1 true WO2005030643A1 (fr) 2005-04-07

Family

ID=34394647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2004/000114 WO2005030643A1 (fr) 2003-09-29 2004-09-22 Appareil et procede de production de silicate de calcium

Country Status (1)

Country Link
WO (1) WO2005030643A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584116A (zh) * 2011-12-14 2012-07-18 台荣建材(湖州)有限公司 一种无石棉轻质硅酸钙板及其制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928539A (en) * 1972-05-05 1975-12-23 Onoda Chem Ind Co Ltd Method for continuously producing hydrated calcium silicates
US4908067A (en) * 1984-09-13 1990-03-13 Jack T. H. Just Hydrolysis process
JPH062412B2 (ja) * 1983-08-31 1994-01-12 キヤノン株式会社 インクジェット記録装置
WO2002098553A1 (fr) * 2001-06-04 2002-12-12 Exergen Pty Ltd Extraction sous haute pression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928539A (en) * 1972-05-05 1975-12-23 Onoda Chem Ind Co Ltd Method for continuously producing hydrated calcium silicates
JPH062412B2 (ja) * 1983-08-31 1994-01-12 キヤノン株式会社 インクジェット記録装置
US4908067A (en) * 1984-09-13 1990-03-13 Jack T. H. Just Hydrolysis process
WO2002098553A1 (fr) * 2001-06-04 2002-12-12 Exergen Pty Ltd Extraction sous haute pression

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; KAKIKI, KATSUMI: "Continuous production of molded calcium silicate", XP002309028, retrieved from STN Database accession no. 75:24713 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584116A (zh) * 2011-12-14 2012-07-18 台荣建材(湖州)有限公司 一种无石棉轻质硅酸钙板及其制造方法

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