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1. WO1996005002 - HEAVY METAL-CONTAINING WASTE TREATING PROCESS AND APPARATUS

Publication Number WO/1996/005002
Publication Date 22.02.1996
International Application No. PCT/JP1995/001593
International Filing Date 10.08.1995
IPC
A62D 3/00 2007.01
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
3Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances
CPC
A62D 2101/08
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
2101Harmful chemical substances made harmless, or less harmful, by effecting chemical change
08Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
A62D 2101/43
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
2101Harmful chemical substances made harmless, or less harmful, by effecting chemical change
40Inorganic substances
43containing heavy metals, in the bonded or free state
A62D 2203/04
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
2203Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
04Combined processes involving two or more non-distinct steps covered by groups A62D3/10 - A62D3/40
A62D 2203/10
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
2203Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
10Apparatus specially adapted for treating harmful chemical agents; Details thereof
A62D 3/33
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
3Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
30by reacting with chemical agents
33by chemical fixing the harmful substance, e.g. by chelation or complexation
A62D 3/37
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
3Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
30by reacting with chemical agents
37by reduction, e.g. hydrogenation
Applicants
  • SHINMAYWA INDUSTRIES, LTD. [JP/JP]; 5-25, Kosone-cho 1-chome Nishinomiya-shi Hyogo 663, JP
Inventors
  • HAYASHI, Yoshihiro; JP
  • YAMANE, Takeshi; JP
  • KANNAN, Masaki; JP
  • KOJIMA, Akira; JP
Agents
  • FUKAMI, Hisao ; Sumitomo Bank Minamimori-machi Building 1-29, Minamimori-machi 2-chome Kita-ku Osaka-shi Osaka 530, JP
Priority Data
6/19143015.08.1994JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HEAVY METAL-CONTAINING WASTE TREATING PROCESS AND APPARATUS
(FR) PROCEDE ET APPAREIL DE TRAITEMENT DE DECHETS CONTENANT DES METAUX LOURDS
Abstract
(EN)
A process and an apparatus for treating waste containing heavy metals to make it harmless. The process adds an iron oxide or a material that forms an iron oxide when heated in the presence of oxygen, and a reductant, such as carbon, to the waste. The resultant mixture is heated by a dry method to form ferrite. The heavy metals are immobilized in the ferrite, thereby converting the waste to a safe and useful ferrite material. The treating apparatus comprises a reactor (18), material suppliers (10, 12, 14, 16), a stirrer (22), a radiation heater (20), a device (26) for recovering volatile metals, and a dust collector (28).
(FR)
Un procédé et un appareil permettent de traiter des déchets contenant des métaux lourds et de les rendre inoffensifs. Ce procédé consiste à ajouter à ces déchets un oxyde de fer, ou une substance qui forme un oxyde de fer lorsqu'on la chauffe en présence d'oxygène, ainsi qu'un réducteur tel que du carbone. Le mélange résultant est chauffé à sec pour former une ferrite où les métaux lourds sont immobilisés, ce qui transforme ces déchets en une ferrite sûr et utile. L'appareil de traitement comporte un réacteur (18), des dispositifs d'alimentation en matériaux (10, 12, 14, 16), un agitateur (22), un chauffage à rayonnement (20), un dispositif (26) récupérant les métaux volatils, et un collecteur de poussières (28).
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