WO2006113176A3 - Method and apparatus for treating lime slurry for grit removal - Google Patents

Method and apparatus for treating lime slurry for grit removal Download PDF

Info

Publication number
WO2006113176A3
WO2006113176A3 PCT/US2006/013074 US2006013074W WO2006113176A3 WO 2006113176 A3 WO2006113176 A3 WO 2006113176A3 US 2006013074 W US2006013074 W US 2006013074W WO 2006113176 A3 WO2006113176 A3 WO 2006113176A3
Authority
WO
WIPO (PCT)
Prior art keywords
slurry
grit
lime slurry
lime
tank
Prior art date
Application number
PCT/US2006/013074
Other languages
French (fr)
Other versions
WO2006113176A2 (en
Inventor
Paul G Christy
Michael Quici
Original Assignee
Rdp Co
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 US11/106,068 external-priority patent/US8133401B2/en
Application filed by Rdp Co filed Critical Rdp Co
Priority to AU2006236872A priority Critical patent/AU2006236872B2/en
Priority to EP06749528A priority patent/EP1879675A4/en
Priority to CA2604908A priority patent/CA2604908C/en
Publication of WO2006113176A2 publication Critical patent/WO2006113176A2/en
Publication of WO2006113176A3 publication Critical patent/WO2006113176A3/en
Priority to AU2010219307A priority patent/AU2010219307B2/en

Links

Classifications

    • 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
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/02—Lime
    • C04B2/04—Slaking
    • C04B2/045—After-treatment of slaked lime
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)

Abstract

A method and apparatus is provided for conveying lime slurry, removing and controlling the amount of grit, and feeding lime slurry, wherein the lime slurry moves through a recirculation loop, and wherein gravity removal of grit from the lime slurry takes place. A stilling well is provided, inside or outside the slurry tank, either fixed in cross-sectional area or adjustable, but wherein the cross-sectional area of the stilling tank can be selected or adjusted to alter the flow velocity of slurry therethrough and the residence time of slurry therethrough, as slurry is delivered through the stilling well via a suction line located therein, whereby grit can be separated via gravity from slurry in the slurry tank prior to withdrawal of slurry through the stilling well.
PCT/US2006/013074 2005-04-14 2006-04-06 Method and apparatus for treating lime slurry for grit removal WO2006113176A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2006236872A AU2006236872B2 (en) 2005-04-14 2006-04-06 Method and apparatus for treating lime slurry for grit removal
EP06749528A EP1879675A4 (en) 2005-04-14 2006-04-06 Method and apparatus for treating lime slurry for grit removal
CA2604908A CA2604908C (en) 2005-04-14 2006-04-06 Method and apparatus for treating lime slurry for grit removal
AU2010219307A AU2010219307B2 (en) 2005-04-14 2010-09-06 Method and apparatus for treating lime slurry for grit removal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/106,068 2005-04-14
US11/106,068 US8133401B2 (en) 2005-04-14 2005-04-14 Method and apparatus for treating lime slurry for grit removal
US11/278,233 2006-03-31
US11/278,233 US7416673B2 (en) 2005-04-14 2006-03-31 Method and apparatus for treating lime slurry for grit removal

Publications (2)

Publication Number Publication Date
WO2006113176A2 WO2006113176A2 (en) 2006-10-26
WO2006113176A3 true WO2006113176A3 (en) 2009-04-30

Family

ID=37115651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/013074 WO2006113176A2 (en) 2005-04-14 2006-04-06 Method and apparatus for treating lime slurry for grit removal

Country Status (4)

Country Link
EP (1) EP1879675A4 (en)
AU (1) AU2006236872B2 (en)
CA (1) CA2604908C (en)
WO (1) WO2006113176A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8133401B2 (en) * 2005-04-14 2012-03-13 Rdp Company Method and apparatus for treating lime slurry for grit removal
US9023312B2 (en) 2010-03-05 2015-05-05 Rdp Technologies, Inc. Process and apparatus for slaking lime and dissolving scale
US9650293B2 (en) 2010-03-05 2017-05-16 Rdp Technologies, Inc. Process and apparatus for slaking lime and dissolving scale
US9688547B2 (en) 2011-06-22 2017-06-27 RPD Technologies, Inc. Method and apparatus for filtration of lime-treated water
US9169147B2 (en) * 2011-11-22 2015-10-27 Rdp Technologies, Inc. Precision lime stabilization system and method for treatment of sewage sludge
SG11202110542RA (en) 2019-03-28 2021-10-28 Nbot Systems LLC Gas injection systems for optimizing nanobubble formation in a disinfecting solution
CN110193218B (en) * 2019-06-28 2021-07-20 水利部交通运输部国家能源局南京水利科学研究院 Precipitation tank scale control method and device of rainfall flood resource underground water recharging system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588559A (en) * 1983-01-10 1986-05-13 Envirotech Corporation Lime slaking system including a cyclone and classifier for separating calcium hydroxide and grit particles from a slurry thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416764A (en) * 1980-11-28 1983-11-22 Natomas Energy Company Method and appratus for extracting tar sand
US4482528A (en) * 1983-01-10 1984-11-13 Envirotech Corporation Lime slaking and grit removal process utilized in SO2 removal
US5368731A (en) * 1993-10-04 1994-11-29 Dorr-Oliver Incorporated Vacuum assisted slaker classifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588559A (en) * 1983-01-10 1986-05-13 Envirotech Corporation Lime slaking system including a cyclone and classifier for separating calcium hydroxide and grit particles from a slurry thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1879675A4 *

Also Published As

Publication number Publication date
EP1879675A4 (en) 2010-12-22
EP1879675A2 (en) 2008-01-23
CA2604908C (en) 2013-06-18
WO2006113176A2 (en) 2006-10-26
CA2604908A1 (en) 2006-10-26
AU2006236872B2 (en) 2011-08-11
AU2006236872A1 (en) 2006-10-26

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