GB969538A - Method of removing volatile constituents and carbon from rice hulls - Google Patents
Method of removing volatile constituents and carbon from rice hullsInfo
- Publication number
- GB969538A GB969538A GB3763461A GB3763461A GB969538A GB 969538 A GB969538 A GB 969538A GB 3763461 A GB3763461 A GB 3763461A GB 3763461 A GB3763461 A GB 3763461A GB 969538 A GB969538 A GB 969538A
- Authority
- GB
- United Kingdom
- 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
Links
- 235000007164 Oryza sativa Nutrition 0.000 title abstract 4
- 235000009566 rice Nutrition 0.000 title abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052799 carbon Inorganic materials 0.000 title abstract 3
- 239000000470 constituent Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 240000007594 Oryza sativa Species 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 4
- 229910052760 oxygen Inorganic materials 0.000 abstract 4
- 239000001301 oxygen Substances 0.000 abstract 4
- 241000209094 Oryza Species 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
-
- 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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
-
- 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
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use 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
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
- C04B18/101—Burned rice husks or other burned vegetable material
-
- 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
- Y02W30/91—Use 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)
- Ceramic Engineering (AREA)
- Medical Informatics (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Biophysics (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (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.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6576260A | 1960-10-28 | 1960-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB969538A true GB969538A (en) | 1964-09-09 |
Family
ID=22064920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3763461A Expired GB969538A (en) | 1960-10-28 | 1961-10-20 | Method of removing volatile constituents and carbon from rice hulls |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES270791A1 (en) |
GB (1) | GB969538A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3511601A (en) * | 1968-05-13 | 1970-05-12 | Dow Chemical Co | Process for densifying rice hulls |
WO1995010488A1 (en) * | 1993-10-15 | 1995-04-20 | 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 |
-
1961
- 1961-09-28 ES ES0270791A patent/ES270791A1/en not_active Expired
- 1961-10-20 GB GB3763461A patent/GB969538A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3511601A (en) * | 1968-05-13 | 1970-05-12 | Dow Chemical Co | Process for densifying rice hulls |
WO1995010488A1 (en) * | 1993-10-15 | 1995-04-20 | 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 |
---|---|
ES270791A1 (en) | 1962-03-16 |
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