ES381415A1 - Treatment of hot dust-laden gases - Google Patents

Treatment of hot dust-laden gases

Info

Publication number
ES381415A1
ES381415A1 ES381415A ES381415A ES381415A1 ES 381415 A1 ES381415 A1 ES 381415A1 ES 381415 A ES381415 A ES 381415A ES 381415 A ES381415 A ES 381415A ES 381415 A1 ES381415 A1 ES 381415A1
Authority
ES
Spain
Prior art keywords
gases
treatment
dust
laden gases
hot dust
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
ES381415A
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.)
FLSmidth and Co AS
Original Assignee
FLSmidth and Co AS
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 FLSmidth and Co AS filed Critical FLSmidth and Co AS
Publication of ES381415A1 publication Critical patent/ES381415A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/013—Conditioning by chemical additives, e.g. with SO3
    • 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
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Treating Waste Gases (AREA)
  • Electrostatic Separation (AREA)

Abstract

Hot dust-laden gases, e.g. the gases from a preheating stage wherein cement raw meal is preheated, are conditioned prior to entering an electrostatic precipitator by an addition in aqueous solution of a water-soluble alkalimetal salt. Suitable salts are the sulphates and chlorides of sodium and potassium added in amounts corresponding to between 0.05 and 2% of Na 2 O or K 2 O of the amount of dust in the gases.
ES381415A 1969-07-04 1970-07-03 Treatment of hot dust-laden gases Expired ES381415A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33901/69A GB1262100A (en) 1969-07-04 1969-07-04 Treatment of hot dust-laden gases

Publications (1)

Publication Number Publication Date
ES381415A1 true ES381415A1 (en) 1972-11-16

Family

ID=10358898

Family Applications (1)

Application Number Title Priority Date Filing Date
ES381415A Expired ES381415A1 (en) 1969-07-04 1970-07-03 Treatment of hot dust-laden gases

Country Status (7)

Country Link
JP (1) JPS4815986B1 (en)
DE (1) DE2032755C2 (en)
ES (1) ES381415A1 (en)
FR (1) FR2054615B1 (en)
GB (1) GB1262100A (en)
SE (1) SE363742B (en)
ZA (1) ZA704581B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018815C2 (en) * 1980-05-16 1986-04-17 Vereinigte Saar-Elektrizitäts-Aktiensgesellschaft, 6600 Saarbrücken Process for the conditioning of flue gas for the separation of the flue dust in the electrostatic precipitator
EP0459576A3 (en) * 1990-06-01 1992-01-15 Calgon Corporation Use of anionic polymer nitrate compositions to lower the electrical resistivity of fly ash

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE658060C (en) * 1934-03-22 1938-03-24 Patentverwertung Process for the electrical cleaning of dry exhaust gases from furnace processes
DE720635C (en) * 1940-06-20 1942-05-11 Metallgesellschaft Ag Process for the pretreatment of electrostatic separating material before separation with chemical wetting agents
US2382565A (en) * 1943-11-01 1945-08-14 Research Corp Recovery of material from roaster gases
DE1289854B (en) * 1962-05-19 1969-02-27 Kloeckner Humboldt Deutz Ag Method and device for cooling and humidifying a hot gas stream
GB1035667A (en) * 1963-04-11 1966-07-13 Metallgesellschaft Ag The removal of dust from the waste gases of sintering installations
GB1145827A (en) * 1965-07-22 1969-03-19 Smidth & Co As F L Treatment of dust from cement kilns
US3507482A (en) * 1968-11-08 1970-04-21 Ludwik Kraszewski Apparatus for reducing alkali content of cement clinker and simultaneously improving efficiency of electrostatic dust collector

Also Published As

Publication number Publication date
JPS4815986B1 (en) 1973-05-18
DE2032755C2 (en) 1985-01-31
FR2054615A1 (en) 1971-04-23
FR2054615B1 (en) 1973-12-07
GB1262100A (en) 1972-02-02
DE2032755A1 (en) 1971-01-14
ZA704581B (en) 1971-03-31
SE363742B (en) 1974-02-04

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