METHOD OF DECONTAMINATION OF MIXTURE OF POLYCHLORO BIPHENYLS AND TRICHLOROBENZENES

FIELD: ecology; chemical decontamination of steady organic contaminants; decontamination and utilization of electrical equipment, such as power transformers and capacitors. ^ SUBSTANCE: proposed method is based on oleum sulfurizing followed by treatment of sulfonic acids and free sulfuric acid with...

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Hauptverfasser:	SVISTUNOVA ZOJA IVANOVNA, MOSIN IGOR' PETROVICH, SMIRNOV EVGENIJ ALEKSANDROVICH, RJABKINA AL'BINA PETROVNA, OLIFIRENKO VLADIMIR NIKOLAEVICH, PALAGIN ANATOLIJ IVANOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT DISPOSAL OF SOLID WASTE FIRE-FIGHTING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES LIFE-SAVING METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: ecology; chemical decontamination of steady organic contaminants; decontamination and utilization of electrical equipment, such as power transformers and capacitors. ^ SUBSTANCE: proposed method is based on oleum sulfurizing followed by treatment of sulfonic acids and free sulfuric acid with triethanol amine till complete neutralization; sulfurizing is carried out at the following mole ratio of polychloro biphenyls: sulfuric anhydride in oleum equal to 1:1 to 1.3 at temperature of 50-90C for 2-2.5 h. Concentration of sulfuric anhydride in oleum used for sulfurizing ranges from 17 to 60 mass-%. ^ EFFECT: reduced power requirements due to lowered temperature and reduced duration of process. ^ 5 tbl