DE3815982A1 - Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas - Google Patents

Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas

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Publication number
DE3815982A1
DE3815982A1 DE19883815982 DE3815982A DE3815982A1 DE 3815982 A1 DE3815982 A1 DE 3815982A1 DE 19883815982 DE19883815982 DE 19883815982 DE 3815982 A DE3815982 A DE 3815982A DE 3815982 A1 DE3815982 A1 DE 3815982A1
Authority
DE
Germany
Prior art keywords
salts
extinguishing
added
iron
purification
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Withdrawn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
DE19883815982
Other languages
German (de)
Inventor
Hermann Dipl Chem Suchenwirth
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.)
Ftu 8130 Starnberg De GmbH
Original Assignee
Individual
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 DE19873716566 external-priority patent/DE3716566A1/en
Application filed by Individual filed Critical Individual
Priority to DE19883815982 priority Critical patent/DE3815982A1/en
Priority to JP63504089A priority patent/JP2602085B2/en
Priority to AT92103175T priority patent/ATE110582T1/en
Priority to AT88904222T priority patent/ATE137417T1/en
Priority to EP95101853A priority patent/EP0655273A3/en
Priority to EP88201053A priority patent/EP0292083A3/en
Priority to PCT/EP1988/000436 priority patent/WO1988009203A2/en
Priority to DE3851344T priority patent/DE3851344D1/en
Priority to EP88904222A priority patent/EP0314733B1/en
Priority to EP92103175A priority patent/EP0496432B1/en
Priority to DE8817061U priority patent/DE8817061U1/en
Priority to DE8816866U priority patent/DE8816866U1/en
Priority to DE3855248T priority patent/DE3855248D1/en
Publication of DE3815982A1 publication Critical patent/DE3815982A1/en
Priority to US07/801,679 priority patent/US5306475A/en
Priority to US08/193,238 priority patent/US5618508A/en
Priority to HK89095A priority patent/HK89095A/en
Withdrawn legal-status Critical Current

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
    • C04B2/06—Slaking with addition of substances, e.g. hydrophobic agents ; Slaking in the presence of other compounds
    • 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
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • 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
    • B01D53/64—Heavy metals or compounds thereof, e.g. mercury
    • 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
    • B01D53/68—Halogens or halogen compounds
    • 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
    • B01D53/68—Halogens or halogen compounds
    • B01D53/70—Organic halogen compounds
    • 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
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

In the production of Ca(OH)2 from burnt lime (CaO) by slaking, to improve the properties of calcium hydroxide, salts, inter alia, are added to the slaking water. Chlorides and nitrates accelerate the slaking process, for example, sulphates, hydroxides, phosphates and carbonates prolong it. According to the invention, to prevent excessively short and excessively long slaking times, accelerating and prolonging salts are used in combination. For example, the accelerating action of iron(III) chloride can be removed again with iron(III) sulphate.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung reaktionsfähiger Calciumhydroxide für die Gas- und Abgasrei­ nigung, bei dem dem zum Löschen von Branntkalk (CaO) erfor­ derlichen Wasser die Reaktionsfähigkeit des Calciumhydroxids steigernde und/oder schadstoffbindende Stoffe und/oder kata­ lytisch wirkende Substanzen zugesetzt werden.The invention relates to a method of manufacture reactive calcium hydroxide for the gas and exhaust gas series in which the required to extinguish quicklime (CaO) other water the reactivity of calcium hydroxide increasing and / or pollutant binding substances and / or kata lytically acting substances are added.

Nach der Lehre der Hauptanmeldung P 37 16 566.6-43 werden zur Steigerung der Reaktionsfähigkeit von Calciumhydroxid dem Löschwasser für Branntkalk Salze mit verschiedenen Funk­ tionen zugesetzt. Unter anderem werden Alkalihydroxide, Al­ kalihydrogencarbonate, Calciumchlorid in verschiedenen Hy­ dratstufen, Eisenchloride und Eisensulfate zugesetzt.According to the teaching of the main application P 37 16 566.6-43 to increase the reactivity of calcium hydroxide the extinguishing water for quicklime salts with different radio ions added. Among others, alkali hydroxides, Al potash hydrogen carbonates, calcium chloride in various hy third stages, iron chlorides and iron sulfates added.

Bei der Verwendung von Salzen mit Chlorid als Anion kommt es zu einer starken Beschleunigung des Löschvorganges. Dies kann u. U. dazu führen, daß die gleichmäßige Durchmischung des Branntkalkes mit Wasser und den darin gelösten Substan­ zen nicht gewährleistet werden kann. Bei der Verwendung der modifizierten Calciumhydroxide zur Gas- und Abgasreinigung besteht dann die Gefahr, daß die Abscheideleistung starken Schwankungen unterworfen ist.When using salts with chloride as an anion it happens to a strong acceleration of the deletion process. This can u. U. cause the uniform mixing the quicklime with water and the substance dissolved in it zen cannot be guaranteed. When using the modified calcium hydroxides for gas and exhaust gas cleaning then there is a risk that the separation performance strong Is subject to fluctuations.

Andererseits führt die Zugabe von Salzen mit Sulfat und Hy­ droxid als Anion zu einer Hemmung des Löschvorganges. Eine Hemmung des Löschvorganges hat den Nachteil, daß die vor­ handenen Löschapparaturen in ihrer Effektivität verschlech­ tert werden, d. h. die in der Zeiteinheit hergestellte Menge Calciumhydroxid geht zurück. Hinzu kommt noch, daß bei star­ ker Verzögerung des Löschvorganges die Löschtemperatur nie­ drig bleibt und damit ein Produkt entsteht, das für die Gas- und Abgasreinigung nicht aktiv genug ist.On the other hand, the addition of salts with sulfate and Hy leads hydroxide as an anion to inhibit the extinguishing process. A Inhibiting the deletion has the disadvantage that the front existing extinguishers deteriorate in their effectiveness become tert. H. the quantity produced in the unit of time Calcium hydroxide is decreasing. Add to that that at star The deletion process never delays the extinguishing temperature remains high and a product is created that is suitable for gas and exhaust gas cleaning is not active enough.

In Weiterbildung des Gegenstandes der Hauptanmeldung wird deshalb erfindungsgemäß vorgeschlagen, daß bei Einsatz von Salzen oder Stoffen, die die Löschgeschwindigkeit steigern, noch Salze oder Stoffe zugesetzt werden, die die Löschge­ schwindigkeit verlangsamen.In continuing education of the subject of the main application therefore proposed according to the invention that when using Salts or substances that increase the rate of extinguishing, nor are salts or substances added to the extinguishing agent slow down speed.

Es wurde gefunden, daß die hemmende Wirkung von Sulfaten z. B. durch die Zugabe von Chloriden wieder aufgehoben werden kann. Das Mischungsverhältnis hemmende zu beschleunigende Salze kann dabei in weiten Grenzen variiert und so einge­ stellt werden, daß eine Löschzeit nach Wunsch eintritt.It has been found that the inhibitory effect of sulfates e.g. B. can be canceled by the addition of chlorides can. The mixture ratio inhibiting to be accelerated Salts can vary within wide limits and thus be used be set that a deletion time occurs as desired.

Eine weitere bevorzugte Ausführungsform des erfindungsge­ mäßen Verfahrens ist dadurch gekennzeichnet, daß bei Einsatz von Metallsalzen mit Chlorid, Nitrit und/oder Nitrat als den Löschvorgang beschleunigendes Anion Metallsalze mit Sulfat, Hydrogencarbonat, Phosphat und/oder Hydroxid als den Lösch­ vorgang hemmendes Anion zugesetzt werden. Another preferred embodiment of the fiction moderate method is characterized in that when used of metal salts with chloride, nitrite and / or nitrate as the Quenching process accelerating anion metal salts with sulfate, Hydrogen carbonate, phosphate and / or hydroxide as the quench process-inhibiting anion can be added.  

Zum Beispiel beschleunigt Calciumchlorid den Löschvorgang sehr stark. Der rasche Verlauf der Löschreaktion kann durch Kombination mit Eisensulfat gehemmt und die Löschzeit nach Wahl eingestellt werden. Die Auswahl der Salze mit Beschleu­ nigungscharakter und der mit Hemmung muß so erfolgen, daß bei der Lösung im Löschwasser keine Fällungsreaktionen ein­ treten.For example, calcium chloride speeds up the extinguishing process very strong. The rapid course of the extinguishing reaction can be caused by Combination with iron sulfate inhibited and the extinguishing time after Choice can be set. The choice of salts with misting Character of inclination and inhibition must be such that no precipitation reactions when dissolved in the extinguishing water to step.

Als vorteilhaft hat es sich erwiesen, die Alkali-, Magne­ sium-, Calcium-, Aluminium- und Eisenchloride mit Eisen- und/oder Aluminiumsulfat als den Löschvorgang hemmende Salze einzusetzen.It has proven advantageous to use the alkali, magne sium, calcium, aluminum and iron chlorides with iron and / or aluminum sulfate as the quenching salts to use.

Außerdem wurde gefunden, daß sich das erfindungsgemäße Ver­ fahren mit Vorteil anwenden läßt, wenn die Löschgeschwindig­ keit steigernde und die Löschgeschwindigkeit hemmende Salze im Gewichtsverhältnis 1 : 5 bis 5 : 1 eingesetzt werden. Die er­ findungsgemäß hergestellten modifizierten Calciumhydroxide lassen sich zur Reinigung von Gasen und Abgasen von sauren Stoffen, organischen Stoffen, flüchtigen Schwermetallen und chlorierten Kohlenwasserstoffen einsetzen.It was also found that the Ver driving can be used with advantage when the extinguishing speed salts which increase the speed and inhibit the rate of extinguishing in a weight ratio of 1: 5 to 5: 1. Which he modified calcium hydroxides produced according to the invention can be used for cleaning gases and exhaust gases from acidic Substances, organic substances, volatile heavy metals and use chlorinated hydrocarbons.

Sie sind weiterhin als Katalysatoren bei Oxidations- und Re­ duktionsvorgängen verwendbar.They are still as catalysts for oxidation and Re production processes can be used.

Beispiel 1example 1

28 g Branntkalk, der etwa 1 Monat gelagert worden war, wur­ den mit 15,2 g Wasser versetzt. Nach 40 Sekunden Reaktion wurden 90 Grad C gemessen.28 g quicklime, which had been stored for about 1 month, was with 15.2 g of water. After 40 seconds of reaction were measured at 90 degrees C.

Werden dem Löschwasser 1,4 g Eisen(III)-sulfat × 7 H2O zuge­ setzt, dann werden 90 Grad C erst nach 120 Sekunden er­ reicht. Andererseits führt die Zugabe von 2,3 g Eisen(III)- chlorid × 6 H2O zum Löschwasser nahezu zu einer Spontanreak­ tion. Bereits nach 5 Sekunden werden 90 Grad C erreicht. Werden nun dem Löschwasser 0,4 g Eisen(III)-chlorid × 6 HzO und 0,2 g Eisen(III)-sulfat × 7 H2O zugesetzt, dann beträgt die Zeit bis zur Erreichung von 90 Grad C rund 50 Sekunden.If 1.4 g of iron (III) sulfate × 7 H 2 O is added to the extinguishing water, 90 degrees C will only be reached after 120 seconds. On the other hand, the addition of 2.3 g iron (III) chloride × 6 H 2 O to the extinguishing water almost leads to a spontaneous reaction. 90 degrees C are reached after only 5 seconds. If 0.4 g of iron (III) chloride × 6 HzO and 0.2 g of iron (III) sulfate × 7 H 2 O are added to the extinguishing water, the time to reach 90 degrees C is around 50 seconds.

Dieses Beispiel zeigt, daß die hemmende und beschleunigende Wirkung von Metallsalzen im Löschwasser durch sinnvolle Kombination gesteuert werden kann.This example shows that the inhibitory and accelerating Effect of metal salts in extinguishing water through sensible Combination can be controlled.

Beispiel 2Example 2

28 g frisch hergestellter Branntkalk werden mit 18 g Wasser gelöscht.28 g of freshly made quicklime are mixed with 18 g of water deleted.

Die Zeit bis zur Erreichung von 90 Grad C beträgt 13 Sekun­ den. Werden dem Löschwasser 0,4 g Aluminiumsulfat × 18 H2O zu­ gesetzt, dann werden 18 Sekunden bis zur Erreichung von 90 Grad C benötigt. Die Löschzeit kann um mehr als 50% herab­ gesetzt werden, wenn der angegebenen Menge von Aluminiumsul­ fat noch 0,2 g Eisen(III)-chlorid × 6 H2O zugegeben werden. Dann beträgt die erforderliche Zeit zur Erreichung von 90 Grad C nur noch 11 Sekunden.The time to reach 90 degrees C is 13 seconds. If 0.4 g of aluminum sulfate × 18 H 2 O is added to the extinguishing water, 18 seconds are required to reach 90 degrees Celsius. The extinguishing time can be reduced by more than 50% if 0.2 g of iron (III) chloride × 6 H 2 O are added to the stated amount of aluminum sulfate. Then the time required to reach 90 degrees C is only 11 seconds.

Claims (5)

1. Verfahren zur Herstellung reaktionsfähiger Calciumhydro­ xide für Gas- und Abgasreinigung, bei dem dem zum Löschen von Branntkalk (CaO) erforderlichen Wasser die Reaktionsfä­ higkeit des Calciumhydroxids steigernde und/oder schadstoff­ bindende und/oder katalytisch wirkende Substanzen zugesetzt werden, dadurch gekennzeichnet, daß bei Einsatz von Salzen oder Stoffen, die die Löschgeschwindigkeit steigern, noch Salze oder Stoffe zugesetzt werden, die die Löschgeschwin­ digkeit verlangsamen.1. A process for the preparation of reactive calcium hydroxide for gas and exhaust gas purification, in which the water required to extinguish quicklime (CaO), the reactivity of the calcium hydroxide-increasing and / or pollutant-binding and / or catalytically active substances are added, characterized in that when using salts or substances that increase the extinguishing rate, salts or substances that slow down the extinguishing speed are added. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei Einsatz von Metallsalzen mit Chlorid, Nitrit und/oder Nitrat als den Löschvorgang beschleunigendes Anion Metall­ salze mit Sulfat, Hydrogencarbonat, Phosphat und/oder Hydro­ xid als den Löschvorgang hemmendes Anion zugesetzt werden.2. The method according to claim 1, characterized in that when using metal salts with chloride, nitrite and / or Nitrate as the anion metal accelerating the extinguishing process salts with sulfate, hydrogen carbonate, phosphate and / or hydro xid be added as the anion inhibiting the extinguishing process. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß bei Einsatz von Alkali-, Magnesium-, Calcium-, Aluminium- Eisenchlorid und/oder -nitrat als den Löschvorgang beschleu­ nigende Salze Eisen- und/oder Aluminiumsulfat als den Lösch­ vorgang hemmende Salze eingesetzt werden.3. The method according to claim 2, characterized in that when using alkali, magnesium, calcium, aluminum Accelerate iron chloride and / or nitrate as the extinguishing process nigging salts iron and / or aluminum sulfate as the quench process-inhibiting salts are used. 4. Verfahren nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß die Löschgeschwindigkeit steigernde und die Löschgeschwindigkeit hemmende Salze im Gewichtsverhält­ nis 1 : 5 bis 5 : 1 eingesetzt werden.4. The method according to the preceding claims, characterized characterized in that the rate of extinguishing increases and salts which inhibit the extinguishing rate in weight ratio nis 1: 5 to 5: 1 can be used. 5. Verwendung der nach den Ansprüchen 1-4 hergestellten reaktionsfähigen Calciumhydroxide für die Reinigung von Ga­ sen und Abgasen von anorganischen und organischen Schadstof­ fen.5. Use of those produced according to claims 1-4 reactive calcium hydroxides for the purification of Ga and emissions of inorganic and organic pollutants fen.
DE19883815982 1987-05-18 1988-05-10 Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas Withdrawn DE3815982A1 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
DE19883815982 DE3815982A1 (en) 1987-05-18 1988-05-10 Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas
DE3855248T DE3855248D1 (en) 1987-05-18 1988-05-18 USE OF REACTIVE CALCIUM HYDROXIDE FOR GAS AND EXHAUST GAS PURIFICATION AND
EP88904222A EP0314733B1 (en) 1987-05-18 1988-05-18 The use of reactive calcium hydroxide for purifying gases and exhaust gases
DE8817061U DE8817061U1 (en) 1987-05-18 1988-05-18 Agents for cleaning gases and exhaust gases
AT88904222T ATE137417T1 (en) 1987-05-18 1988-05-18 USE OF REACTIVE CALCIUM HYDROXIDE FOR GAS AND EXHAUST GAS PURIFICATION AND
EP95101853A EP0655273A3 (en) 1987-05-18 1988-05-18 Process for purification of gases and exhaust gases.
EP88201053A EP0292083A3 (en) 1987-05-18 1988-05-18 Method of producing reactive calcium hydroxides for gas and exhaust gas purification, and method of purifying gases and exhaust gases
PCT/EP1988/000436 WO1988009203A2 (en) 1987-05-18 1988-05-18 Process for manufacturing reactive calcium hydroxide for purifying gases and exhaust gases and process for purifying gases and exhaust gases
DE3851344T DE3851344D1 (en) 1987-05-18 1988-05-18 Processes for the purification of gases and exhaust gases.
JP63504089A JP2602085B2 (en) 1987-05-18 1988-05-18 Reactive calcium hydroxide based purifying agent for purifying gas and waste gas and method for purifying gas and waste gas
EP92103175A EP0496432B1 (en) 1987-05-18 1988-05-18 Process for cleaning gases and exhaust gases
AT92103175T ATE110582T1 (en) 1987-05-18 1988-05-18 METHOD OF CLEANING GASES AND EXHAUST FUMES.
DE8816866U DE8816866U1 (en) 1987-05-18 1988-05-18 Finely powdered calcium hydroxide for gas and exhaust gas purification
US07/801,679 US5306475A (en) 1987-05-18 1991-12-02 Reactive calcium hydroxides
US08/193,238 US5618508A (en) 1987-05-18 1994-02-08 Process for purifying exhaust gas using modified calcium hydroxide
HK89095A HK89095A (en) 1987-05-18 1995-06-08 Process for cleaning gases and exhaust gases

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873716566 DE3716566A1 (en) 1987-05-18 1987-05-18 Process for the production of reactive calcium hydroxides for exhaust gas purification
DE19883815982 DE3815982A1 (en) 1987-05-18 1988-05-10 Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas

Publications (1)

Publication Number Publication Date
DE3815982A1 true DE3815982A1 (en) 1989-11-23

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DE19883815982 Withdrawn DE3815982A1 (en) 1987-05-18 1988-05-10 Process for the production of reactive calcium hydroxides for purification of gas and exhaust gas

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DE (1) DE3815982A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826971A1 (en) * 1988-08-09 1990-02-15 Ftu Gmbh Process for preparing modified calcium hydroxides for gas and waste gas purification using concentrates of active substances
DE3935904A1 (en) * 1988-10-28 1990-05-03 Ftu Gmbh Modified calcium hydroxide powder for heavy metal removal from gas
DE3844217A1 (en) * 1988-12-29 1990-07-05 Ftu Gmbh Process for preparing calcium hydroxides
US5352647A (en) * 1990-05-02 1994-10-04 Ftu Gmbh Composition for separating out noxious substances from gases and exhaust gases
EP2958856B1 (en) 2013-02-19 2019-08-28 S.A. Lhoist Recherche Et Developpement Method for the dry slaking of calcium oxides and magnesium from calcomagnesian compounds

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826971A1 (en) * 1988-08-09 1990-02-15 Ftu Gmbh Process for preparing modified calcium hydroxides for gas and waste gas purification using concentrates of active substances
DE3935904A1 (en) * 1988-10-28 1990-05-03 Ftu Gmbh Modified calcium hydroxide powder for heavy metal removal from gas
DE3844217A1 (en) * 1988-12-29 1990-07-05 Ftu Gmbh Process for preparing calcium hydroxides
US5352647A (en) * 1990-05-02 1994-10-04 Ftu Gmbh Composition for separating out noxious substances from gases and exhaust gases
EP2958856B1 (en) 2013-02-19 2019-08-28 S.A. Lhoist Recherche Et Developpement Method for the dry slaking of calcium oxides and magnesium from calcomagnesian compounds

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