EP0117383A2 - Des brais résistants à l'oxydation - Google Patents

Des brais résistants à l'oxydation Download PDF

Info

Publication number
EP0117383A2
EP0117383A2 EP83850190A EP83850190A EP0117383A2 EP 0117383 A2 EP0117383 A2 EP 0117383A2 EP 83850190 A EP83850190 A EP 83850190A EP 83850190 A EP83850190 A EP 83850190A EP 0117383 A2 EP0117383 A2 EP 0117383A2
Authority
EP
European Patent Office
Prior art keywords
pitch
alkyl
class consisting
aryl
sulfonates
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.)
Granted
Application number
EP83850190A
Other languages
German (de)
English (en)
Other versions
EP0117383B1 (fr
EP0117383A3 (en
Inventor
Samuel Cukier
Henry A. F .L. Kremer
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.)
Carbochem Inc
Original Assignee
Carbochem Inc
Domtar 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 Carbochem Inc, Domtar Inc filed Critical Carbochem Inc
Publication of EP0117383A2 publication Critical patent/EP0117383A2/fr
Publication of EP0117383A3 publication Critical patent/EP0117383A3/en
Application granted granted Critical
Publication of EP0117383B1 publication Critical patent/EP0117383B1/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen
    • C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
    • C10C3/026—Working-up pitch, asphalt, bitumen by chemical means reaction with organic compounds

Definitions

  • This invention relates to coal tar and petroleum pitches hereinafter referred to as pitches, and to the process of making same.
  • This invention is particularly directed to pitch compositions which are more resistant to oxidation, and preferable to those yielding more stable, less porous anodes producing less fumes and less gasification, and or to piches used as refractory materials.
  • Another object of the invention is to decrease the rate of oxidation of carbon bodies and in particular of carbon electrodes used in the aluminum industry.
  • Still another object of the invention is to reduce the dusting.
  • Another object of the invention is to reduce the consumption rate of the carbon electrode that is of both the pitch coke carbon which provides the binder phase and the filler carbon, thereby achieving considerable savings.
  • the invention is directed to a pitch composition having a good resistance to oxidation, comprising:
  • soluble in said pitch is meant that the active component must dissolve in the molten pitch.
  • said member compatible with said pitch is meant a member which will not add atoms or molecules detrimental to anodes or to the electrolytic bath.
  • suitable members include: pitch-soluble alkyl-aryl sulfonates of the aromatic family, that is those containing rings such as anthracene, naphthalene, benzene of the alkyl-aryl sulfonates family such as alkyl-benzene sulfonates, alkyl-naphthalene sulfonates and alkyl-anthracene sulfonates and homologues where the cation is at least one member selected from the class consisting of metals of groups 1 and 2 of the periodic table as well as ammonium and preferably sodium, potassium, ammonium ion and the like; and the alkyl is a branched or unbranched chain having between 1 and 4 carbon atoms.
  • electrodes were produced in a Pilot Plant based on a European standard petroleum coke. The anodes were baked after moulding. Test cylinders were then cut from the various electrodes for testing, as disclosed in A.M. Odok and W.K. Fischer, "Application of Pilot Plant Work in Prebaked Anode Manufacturing", pp. 269-286 in Light Metals, Vol. 1, John J. Miller, ed.: A.I.M.E., New York, N.Y., 1978.
  • the electrode consumption tests were conducted in a furnace at approximately 960°C for 7 hours, passing a measured amount of carbon dioxide through the furnace. Other physical properties have been determined by standard testing methods.

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Discharge Heating (AREA)
EP83850190A 1983-02-25 1983-07-06 Des brais résistants à l'oxydation Expired EP0117383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000422361A CA1187653A (fr) 1983-02-25 1983-02-25 Brais resistant a l'oxydation
CA422361 1983-02-25

Publications (3)

Publication Number Publication Date
EP0117383A2 true EP0117383A2 (fr) 1984-09-05
EP0117383A3 EP0117383A3 (en) 1985-04-17
EP0117383B1 EP0117383B1 (fr) 1988-10-26

Family

ID=4124639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83850190A Expired EP0117383B1 (fr) 1983-02-25 1983-07-06 Des brais résistants à l'oxydation

Country Status (3)

Country Link
EP (1) EP0117383B1 (fr)
CA (1) CA1187653A (fr)
DE (2) DE3378320D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943365A (en) * 1986-03-12 1990-07-24 Rutgerswerke Ag Method for the production of modified pitches and the further application
CN104946288A (zh) * 2015-06-10 2015-09-30 神华集团有限责任公司 改质沥青及其制备方法
CN106221668A (zh) * 2016-09-07 2016-12-14 辽宁石油化工大学 一种制备优质电极用沥青粘结剂的工艺方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR879656A (fr) * 1940-11-08 1943-03-02 Bataafsche Petroleum Procédé pour la préparation de bitumes asphaltiques
US2669525A (en) * 1949-08-03 1954-02-16 Standard Oil Co Bitumen and polyvalent metal hydrocarbon oil sulfonate composition and process of making same
US3539370A (en) * 1967-10-12 1970-11-10 Phillips Petroleum Co Asphalt antihardening agents
RO58599A2 (fr) * 1971-09-07 1976-02-15
US4298396A (en) * 1980-04-21 1981-11-03 Domtar Inc. Pitch compositions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR879656A (fr) * 1940-11-08 1943-03-02 Bataafsche Petroleum Procédé pour la préparation de bitumes asphaltiques
US2669525A (en) * 1949-08-03 1954-02-16 Standard Oil Co Bitumen and polyvalent metal hydrocarbon oil sulfonate composition and process of making same
US3539370A (en) * 1967-10-12 1970-11-10 Phillips Petroleum Co Asphalt antihardening agents
RO58599A2 (fr) * 1971-09-07 1976-02-15
US4298396A (en) * 1980-04-21 1981-11-03 Domtar Inc. Pitch compositions

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 89, no. 4, July 24, 1978, page 176, no. 27394f, Columbus, Ohio, US; & RO - A - 58 599 (CRETULESCU, CONSTANTIN) 30-09-1975 *
Kirk-Othmer, "Encyclopedia of Chemical Technology", 3rd Edition, vol. 3, 1978, p. 284 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943365A (en) * 1986-03-12 1990-07-24 Rutgerswerke Ag Method for the production of modified pitches and the further application
CN104946288A (zh) * 2015-06-10 2015-09-30 神华集团有限责任公司 改质沥青及其制备方法
CN104946288B (zh) * 2015-06-10 2018-04-06 神华集团有限责任公司 改质沥青及其制备方法
CN106221668A (zh) * 2016-09-07 2016-12-14 辽宁石油化工大学 一种制备优质电极用沥青粘结剂的工艺方法

Also Published As

Publication number Publication date
EP0117383B1 (fr) 1988-10-26
CA1187653A (fr) 1985-05-28
EP0117383A3 (en) 1985-04-17
DE117383T1 (de) 1985-01-17
DE3378320D1 (en) 1988-12-01

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