FR2148673A5 - Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream - Google Patents

Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream

Info

Publication number
FR2148673A5
FR2148673A5 FR7127543A FR7127543A FR2148673A5 FR 2148673 A5 FR2148673 A5 FR 2148673A5 FR 7127543 A FR7127543 A FR 7127543A FR 7127543 A FR7127543 A FR 7127543A FR 2148673 A5 FR2148673 A5 FR 2148673A5
Authority
FR
France
Prior art keywords
slaked lime
flue gases
feeding
treatment
gas stream
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
FR7127543A
Other languages
French (fr)
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.)
G&WH Corson Inc
Original Assignee
G&WH Corson Inc
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 G&WH Corson Inc filed Critical G&WH Corson Inc
Priority to FR7127543A priority Critical patent/FR2148673A5/en
Application granted granted Critical
Publication of FR2148673A5 publication Critical patent/FR2148673A5/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B7/00—Combustion techniques; Other solid-fuel combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B2700/00—Combustion apparatus for solid fuel
    • F23B2700/023—Combustion apparatus for solid fuel with various arrangements not otherwise provided for
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

A hydrated alkaline earth hydroxide is continuously fed into fibre gases at 649 degrees - 1316 degrees C arising from combustion of coal and/or oil and cont. fine fly ash particles and S cpds. and reacted for 0.1-5 secs. within the above temp range. The hydroxide is pref. slaked lime with av. particle size 1 mu. produced by continuously reacting quicklime and water under pressure adjacent to the fuel burning plant and continuously forcing a jet of the product into the flue gases. Reaction of the lime with SO2 in the flue gas is extremely rapid and the SO2 is almost completely removed by addition of little more than the stoichiometric amount. Props. of the flu ash recovered from the gas by usual methods are strongly improved, making it an excellent material for foundations surfacing of roads, etc.
FR7127543A 1971-07-21 1971-07-21 Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream Expired FR2148673A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7127543A FR2148673A5 (en) 1971-07-21 1971-07-21 Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7127543A FR2148673A5 (en) 1971-07-21 1971-07-21 Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream

Publications (1)

Publication Number Publication Date
FR2148673A5 true FR2148673A5 (en) 1973-03-23

Family

ID=9081017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7127543A Expired FR2148673A5 (en) 1971-07-21 1971-07-21 Treatment of flue gases - to remove sulphur dioxide by feeding slaked lime into hot gas stream

Country Status (1)

Country Link
FR (1) FR2148673A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440769A1 (en) * 1978-11-02 1980-06-06 Duesseldorf Stadtwerke PROCESS AND APPARATUS FOR NEUTRALIZATION OF ACID TOXIC BODIES OR ACID CONTENT CONTAINED IN BURNED GASES OF COMBUSTION PLANTS WITH HEAT RECOVERY
WO2002008666A1 (en) * 2000-07-26 2002-01-31 Global New Energy Technology Corporation Method and product for improved fossil fuel combustion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440769A1 (en) * 1978-11-02 1980-06-06 Duesseldorf Stadtwerke PROCESS AND APPARATUS FOR NEUTRALIZATION OF ACID TOXIC BODIES OR ACID CONTENT CONTAINED IN BURNED GASES OF COMBUSTION PLANTS WITH HEAT RECOVERY
WO2002008666A1 (en) * 2000-07-26 2002-01-31 Global New Energy Technology Corporation Method and product for improved fossil fuel combustion

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Legal Events

Date Code Title Description
ST Notification of lapse