DE2522439C2 - Use of the carbide lime produced from calcium carbide in the production of acetylene - Google Patents

Use of the carbide lime produced from calcium carbide in the production of acetylene

Info

Publication number
DE2522439C2
DE2522439C2 DE19752522439 DE2522439A DE2522439C2 DE 2522439 C2 DE2522439 C2 DE 2522439C2 DE 19752522439 DE19752522439 DE 19752522439 DE 2522439 A DE2522439 A DE 2522439A DE 2522439 C2 DE2522439 C2 DE 2522439C2
Authority
DE
Germany
Prior art keywords
carbide
acetylene
production
calcium
lime produced
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
DE19752522439
Other languages
German (de)
Other versions
DE2522439A1 (en
Inventor
Heinz 4600 Dortmund Gresch
Heinz 4390 Gladbeck Hölter
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.)
Saarberg-Hoelter-Umwelttechnik 6600 Saarbruecken De GmbH
Original Assignee
Saarberg-Hoelter-Umwelttechnik 6600 Saarbruecken De GmbH
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 Saarberg-Hoelter-Umwelttechnik 6600 Saarbruecken De GmbH filed Critical Saarberg-Hoelter-Umwelttechnik 6600 Saarbruecken De GmbH
Priority to DE19752522439 priority Critical patent/DE2522439C2/en
Publication of DE2522439A1 publication Critical patent/DE2522439A1/en
Application granted granted Critical
Publication of DE2522439C2 publication Critical patent/DE2522439C2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur oxides
    • 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
    • B01D53/507—Sulfur oxides by treating the gases with other liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Die Erfindung betrifft die Verwendung des bei der Acetylenerzeugung aus Calciumcarbid anfallenden Carbidkalkes als Zusatz für die Waschflüssigkeit zur Waschung von schwefeldioxidhaltigen Abgasen.The invention relates to the use of the carbide lime obtained in the production of acetylene from calcium carbide as an additive for the scrubbing liquid for scrubbing exhaust gases containing sulfur dioxide.

Bei der Acetylenerzeugung aus Calciumcarbid fällt als Rückstand Carbidkalk (Carbidkalkteig) an. Dieser Rückstand wird in einem Schlammbecken eingedickt und entweder als Zuschlagsstoff in der Bauindustrie benutzt oder einer Deponie zugeführt. In der Bauindustrie kann aber nur ein Teil der insgesamt anfallenden Rückstände verwendet werden. Da der anfallende Carbidkalk stark geruchsbildend ist, kann er auch nicht belie-.big deponiert werden.When acetylene is produced from calcium carbide, the residue is carbide lime (carbide lime dough). This Residue is thickened in a sludge basin and either used as an aggregate in the construction industry or sent to a landfill. In the construction industry, however, only part of the total residues can be used be used. Since the resulting carbide lime has a strong odor, it cannot be used as desired be deposited.

Uir. aus diesem nicht sehr umweltfreundlichen Rückstand wirtschaftlichen Nutzen zu ziehen, wird vorgeschlagen, den Rückstand der Waschflüssigkeit zur Waschung von schwefeldioxidhaltigen Abgasen, zum Beispiel hinter Steinkohle- und Schwerölkraftwerken, zuzusetzen. Die Waschung schwefeldioxidhaltiger Abgase läßt sich insbesondere auch vorteilhaft durchführen in Verbindung mit inkrustationszerstörenden Bindemitteln wie Anionen, die mit dem Carbidschiamm eine wasserlösliche Verbindung eingehen und sich bei Anwesenheit von schwefliger Säure in einem neutralen oder schwachsauren Medium gegen SO2-lonen austauschen lassen und die im alkalischen Bereich des Waschmediums die wasserlöslichen Verbindungen zurückbildet. Beispiele für solche Anionen sind die Anionen der Halogen-Gruppe mit Chlor als typischem Vertreter, die Anionen der Carbonsäuren mit Ameisensäure als typischem Vertreter und die Anionen der Salze und Säuren des Stickstoffs, des Phosphors und dergleichen.Uir. To derive economic benefit from this not very environmentally friendly residue, it is proposed to add the residue to the scrubbing liquid for scrubbing exhaust gases containing sulfur dioxide, for example downstream of hard coal and heavy oil power stations. The scrubbing of exhaust gases containing sulfur dioxide can also be carried out advantageously in connection with encrustation-destroying binders such as anions, which form a water-soluble compound with the carbide and can be exchanged for SO 2 ions in the presence of sulfuric acid in a neutral or weakly acidic medium and those in an alkaline medium Area of the washing medium forms the water-soluble compounds back. Examples of such anions are the anions of the halogen group with chlorine as a typical representative, the anions of carboxylic acids with formic acid as a typical representative and the anions of the salts and acids of nitrogen, phosphorus and the like.

Durch die Kombination des bei der Acetylenerzeugung als Calciumcarbid anfallenden Carbidkalkes mit derartigen Zusätzen bietei sich eine hervorragende Waschflüssigkeit an, aus der nach der Waschung Calciumsulfat ausfällt, welches zu einem hochwertigen Gips aufgearbeitet werden kann.Due to the combination of the calcium carbide produced during acetylene production with Such additives offer an excellent washing liquid, from which calcium sulfate after washing fails, which can be worked up to a high-quality plaster of paris.

5050

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6060

Claims (1)

Patentanspruch: / „Claim: / " Verwendung des bei der Acetylenerzeugung ausUse of the in acetylene production Calciumcarbid anfallenden Carbidkalkes als Zusatz 5 „Calcium carbide accruing carbide lime as an additive 5 " für die Waschflüssigkeit zur Waschung von schwefeldioxidhaltigen Abgasen.for the washing liquid for washing sulfur dioxide-containing Exhaust. toto
DE19752522439 1975-05-21 1975-05-21 Use of the carbide lime produced from calcium carbide in the production of acetylene Expired DE2522439C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752522439 DE2522439C2 (en) 1975-05-21 1975-05-21 Use of the carbide lime produced from calcium carbide in the production of acetylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752522439 DE2522439C2 (en) 1975-05-21 1975-05-21 Use of the carbide lime produced from calcium carbide in the production of acetylene

Publications (2)

Publication Number Publication Date
DE2522439A1 DE2522439A1 (en) 1976-12-09
DE2522439C2 true DE2522439C2 (en) 1985-08-14

Family

ID=5947055

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752522439 Expired DE2522439C2 (en) 1975-05-21 1975-05-21 Use of the carbide lime produced from calcium carbide in the production of acetylene

Country Status (1)

Country Link
DE (1) DE2522439C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415150A1 (en) 1984-04-21 1985-10-31 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck NOx scrubbing downstream of flue gas desulphurisation plants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5147436B2 (en) * 1972-11-10 1976-12-15
JPS5211680B2 (en) * 1973-03-14 1977-04-01

Also Published As

Publication number Publication date
DE2522439A1 (en) 1976-12-09

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: B01D 53/34

D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation