Nova Patents
LTIP991A

Waste processing

Abstract

A method for the processing of solid organic sulphur-containing waste, in particular ion exchange media, from nuclear facilities, which method comprises that in a first step a) the waste is subjected to pyrolysis at the most at 700 C, in a step b) the gas resulting from step a) is subjected to pyrolysis, in an optional step c) the gas resulting from step b) is exposed to a reductant bed, and in a step d) the gas from step b) or alternatively step c) is exposed to a bed of sulphide-forming metal to form metal sulphides and easily manageable harmless gases. Apparatus for carrying out the method comprises A) a pyrolysis reactor for the solid waste, B) a pyrolysis reactor for the gas from A), C) optionally, a reductant bed, and D) a bed of a sulphur-forming metal for the gas from B) or C).

Term

Term ended

Projected expiry passed 17 September 2013, 13 years ago.

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21 members in 12 offices

This recordMember, by publication datePriority claim2 more offices are in the list below

Priority claims4

Priority claims
DocumentOfficeKindDate
9202690SwedenA
9202690SwedenA
92026905
SE19920002690

Members21

Family members, oldest first
DocumentOfficeKind
SE9202690D0SwedenD0
SE9202690LSwedenL
CA2143841A1CanadaA1
WO9407088A1World Intellectual Property Organization (WIPO)A1
AU4987893AAustraliaA
SE470469BSwedenB
LTIP991AThis recordLithuaniaA
FI951163AFinlandA
FI951163A7FinlandA7
EP0659257A1European Patent Office (EPO)A1
TW259873BTaiwan Province of ChinaB
LT3616BLithuaniaB
JPH08504261AJapanA
US5536896AUnited States of AmericaA
EP0659257B1European Patent Office (EPO)B1
DE69306405D1GermanyD1
ES2096940T3SpainT3
DE69306405T2GermanyT2
JP2934508B2JapanB2
CA2143841CCanadaC
FI114168BFinlandB