GB2019541A - Drying and Burning Waste Sludge - Google Patents

Drying and Burning Waste Sludge

Info

Publication number
GB2019541A
GB2019541A GB7912235A GB7912235A GB2019541A GB 2019541 A GB2019541 A GB 2019541A GB 7912235 A GB7912235 A GB 7912235A GB 7912235 A GB7912235 A GB 7912235A GB 2019541 A GB2019541 A GB 2019541A
Authority
GB
United Kingdom
Prior art keywords
sand
sludge
wet
drying
dried sludge
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.)
Withdrawn
Application number
GB7912235A
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.)
Envirotech Corp
Original Assignee
Envirotech Corp
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 US05/895,684 external-priority patent/US4153411A/en
Priority claimed from US06/018,389 external-priority patent/US4248164A/en
Application filed by Envirotech Corp filed Critical Envirotech Corp
Publication of GB2019541A publication Critical patent/GB2019541A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/22—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source and the materials or objects to be dried being in relative motion, e.g. of vibration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • F26B3/205—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor the materials to be dried covering or being mixed with heated inert particles which may be recycled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/50—Fluidised bed furnace
    • F23G2203/503—Fluidised bed furnace with two or more fluidised beds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Abstract

A process and system to dry wet sewage sludge with hot sand and to burn the dried sludge. The sand is heated in a heating device (22) by burning dried sludge at 24, and the hot sand is mixed with wet sludge in a drying device (26). Thereby moisture is driven from the wet sludge to dry it. The dried sludge and sand are separated at 30, and the sand returned to the heating device (22) while the dried sludge is burned at 24 to heat the sand. The wet gases from the drying device (26) are passed through a condenser (38) to the burning zone (24). After heating the sand the waste gases pass through cleaning devices to a stack. <IMAGE>
GB7912235A 1978-04-12 1979-04-06 Drying and Burning Waste Sludge Withdrawn GB2019541A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/895,684 US4153411A (en) 1978-04-12 1978-04-12 Rotary sludge drying system with sand recycle
US06/018,389 US4248164A (en) 1979-03-09 1979-03-09 Sludge drying system with sand recycle

Publications (1)

Publication Number Publication Date
GB2019541A true GB2019541A (en) 1979-10-31

Family

ID=26691065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912235A Withdrawn GB2019541A (en) 1978-04-12 1979-04-06 Drying and Burning Waste Sludge

Country Status (3)

Country Link
CA (1) CA1110498A (en)
GB (1) GB2019541A (en)
IT (1) IT1115184B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012017092A1 (en) * 2010-08-06 2012-02-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and installation for drying sludge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012017092A1 (en) * 2010-08-06 2012-02-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and installation for drying sludge
FR2963616A1 (en) * 2010-08-06 2012-02-10 Commissariat Energie Atomique METHOD AND INSTALLATION FOR DRYING SLUDGE
CN103069239A (en) * 2010-08-06 2013-04-24 原子能和替代能源委员会 Method and installation for drying sludge
CN103069239B (en) * 2010-08-06 2015-07-22 原子能和替代能源委员会 Method and installation for drying sludge
US9869514B2 (en) 2010-08-06 2018-01-16 Commissariat A L'energie Atomique Et Aux Energies Alternatives Sludge drying method and installation

Also Published As

Publication number Publication date
IT1115184B (en) 1986-02-03
IT7921821A0 (en) 1979-04-12
CA1110498A (en) 1981-10-13

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)