ES270791A1 - Method of removing volatile constituents and carbon from rice hulls - Google Patents

Method of removing volatile constituents and carbon from rice hulls

Info

Publication number
ES270791A1
ES270791A1 ES0270791A ES270791A ES270791A1 ES 270791 A1 ES270791 A1 ES 270791A1 ES 0270791 A ES0270791 A ES 0270791A ES 270791 A ES270791 A ES 270791A ES 270791 A1 ES270791 A1 ES 270791A1
Authority
ES
Spain
Prior art keywords
hulls
oxygen
containing gas
conduit
bed
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
Application number
ES0270791A
Other languages
Spanish (es)
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.)
Canada Rice Mills Co
Mount Royal Rice Mills Ltd
Original Assignee
Canada Rice Mills Co
Mount Royal Rice Mills Ltd
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 Canada Rice Mills Co, Mount Royal Rice Mills Ltd filed Critical Canada Rice Mills Co
Publication of ES270791A1 publication Critical patent/ES270791A1/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/06Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10Burned or pyrolised refuse
    • C04B18/101Burned rice husks or other burned vegetable material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Combustion & Propulsion (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

<PICT:0969538/C1/1> A method of removing carbon from carbonaceous rice hull ash from which the volatile constituents have been removed comprises forming a bed of the ash, causing an oxygen-containing gas to flow upwardly therethrough at a rate controlled to maintain a temperature between 500 DEG and 800 DEG C. in the presence of oxygen-containing gas until the carbon is removed. The oxygen-containing gas may be air, and the preferred rate is between 55 and 174 lb./hour/square foot of bed. Initially the gas burner 32, Fig. 1, heats the space between the container 34 and the brickwork 12 to 500 DEG -800 DEG C., and the air supply enters through conduit 22, passes down the paths 14 into the central chamber 29 through passages 30. The rice hulls are introduced tangentially into the combustion chamber from conduit 42, and air is supplied at a rate sufficient to suspend the rice hulls and move them upward in a time just longer than necessary to consume the volatile parts of the hulls. The heat from the burner is then reduced. The hulls with the volatile constituents removed are deflected by the baffles 50 over the periphery of the cone 44 and fall down the inside wall of the cone, the majority of the gas escaping up the stack 52. The burnt hulls fall into a bed in container 34 which is supplied with oxygen-containing gas from conduit 66. A curing period of 20-30 minutes gives a product which is 90-98% amorphous silica. The ash-product in container 34 is removed through the rotary valve 36.
ES0270791A 1960-10-28 1961-09-28 Method of removing volatile constituents and carbon from rice hulls Expired ES270791A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6576260A 1960-10-28 1960-10-28

Publications (1)

Publication Number Publication Date
ES270791A1 true ES270791A1 (en) 1962-03-16

Family

ID=22064920

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0270791A Expired ES270791A1 (en) 1960-10-28 1961-09-28 Method of removing volatile constituents and carbon from rice hulls

Country Status (2)

Country Link
ES (1) ES270791A1 (en)
GB (1) GB969538A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511601A (en) * 1968-05-13 1970-05-12 Dow Chemical Co Process for densifying rice hulls
GB9321359D0 (en) * 1993-10-15 1993-12-08 Kingsway Group Plc Improvements in the production of biogenetic silica from organic plant matter
CN111332800A (en) * 2020-03-07 2020-06-26 安徽省克林泰迩再生资源科技有限公司 Treatment method for improving carbon black performance and impurity removal and collection equipment

Also Published As

Publication number Publication date
GB969538A (en) 1964-09-09

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