DK243082A - PROCEDURE FOR THE PREPARATION OF A LOW CHLORIDE PLASTIC MATERIAL - Google Patents

PROCEDURE FOR THE PREPARATION OF A LOW CHLORIDE PLASTIC MATERIAL Download PDF

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Publication number
DK243082A
DK243082A DK243082A DK243082A DK243082A DK 243082 A DK243082 A DK 243082A DK 243082 A DK243082 A DK 243082A DK 243082 A DK243082 A DK 243082A DK 243082 A DK243082 A DK 243082A
Authority
DK
Denmark
Prior art keywords
used absorbent
preparation
procedure
plastic material
chloride plastic
Prior art date
Application number
DK243082A
Other languages
Danish (da)
Other versions
DK149840B (en
DK149840C (en
Inventor
Ebbe Skyum Joens
Klaus Erik Gude
Original Assignee
Niro Atomizer As
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
Priority claimed from DK116582A external-priority patent/DK116582A/en
Application filed by Niro Atomizer As filed Critical Niro Atomizer As
Priority to DK243082A priority Critical patent/DK149840C/en
Priority to US06/413,417 priority patent/US4495162A/en
Priority to EP82304655A priority patent/EP0074772B1/en
Priority to DE8282304655T priority patent/DE3274232D1/en
Priority to AT82304655T priority patent/ATE23516T1/en
Publication of DK243082A publication Critical patent/DK243082A/en
Publication of DK149840B publication Critical patent/DK149840B/en
Application granted granted Critical
Publication of DK149840C publication Critical patent/DK149840C/en

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  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention relates to a process for the preparation of a calcium sulphate anhydrite material from a used absorbent that has been employed for the removal of sulphur from flue gases. The sulphite in the used absorbent is first oxidized to the corresponding sulphate, preferably by heating in an oxygen-containing gas. The chloride content of the material in the used absorbent is then reduced by heating to 600-950 degrees C and preferably to 750-950 degrees C, together with some fly ashes. The latter can be obtained jointly with the used absorbent by the desulphurizing process, or it can be obtained separately and then be admixed to the used absorbent. The product obtained can be used as an additive in cement manufacture or for another purpose in which calcium sulphate anhydrite is normally employed.
DK243082A 1981-07-29 1982-05-28 PROCEDURE FOR THE PREPARATION OF A CALCIUM SULPHATANE HYDRATE MATERIAL WITH LOW CHLORIDE CONTENT AND A PLANT FOR EXECUTING THE PROCEDURE DK149840C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK243082A DK149840C (en) 1981-07-29 1982-05-28 PROCEDURE FOR THE PREPARATION OF A CALCIUM SULPHATANE HYDRATE MATERIAL WITH LOW CHLORIDE CONTENT AND A PLANT FOR EXECUTING THE PROCEDURE
US06/413,417 US4495162A (en) 1981-09-04 1982-08-31 Preparation of a calcium sulfate anhydrite material of low chloride content
EP82304655A EP0074772B1 (en) 1981-09-04 1982-09-03 Preparation of a calcium sulfate anhydrite material of low chloride content
DE8282304655T DE3274232D1 (en) 1981-09-04 1982-09-03 Preparation of a calcium sulfate anhydrite material of low chloride content
AT82304655T ATE23516T1 (en) 1981-09-04 1982-09-03 PROCESS FOR PRODUCTION OF CALCIUM SULPHATE ANHYDRITE WITH LOW CHLORINE CONTENT.

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
DK339081 1981-07-29
DK339081 1981-07-29
DK355681 1981-08-10
DK355681 1981-08-10
DK391281 1981-09-04
DK391281 1981-09-04
DK397881 1981-09-08
DK397881 1981-09-08
DK499281 1981-11-11
DK499281 1981-11-11
DK116582A DK116582A (en) 1981-09-04 1982-03-16 PROCEDURE AND PLANT TO REMOVE CHLORIDE IN WASTE WASTE PRODUCTS
DK116582 1982-03-16
DK243082 1982-05-28
DK243082A DK149840C (en) 1981-07-29 1982-05-28 PROCEDURE FOR THE PREPARATION OF A CALCIUM SULPHATANE HYDRATE MATERIAL WITH LOW CHLORIDE CONTENT AND A PLANT FOR EXECUTING THE PROCEDURE

Publications (3)

Publication Number Publication Date
DK243082A true DK243082A (en) 1983-01-30
DK149840B DK149840B (en) 1986-10-13
DK149840C DK149840C (en) 1987-03-16

Family

ID=27561799

Family Applications (1)

Application Number Title Priority Date Filing Date
DK243082A DK149840C (en) 1981-07-29 1982-05-28 PROCEDURE FOR THE PREPARATION OF A CALCIUM SULPHATANE HYDRATE MATERIAL WITH LOW CHLORIDE CONTENT AND A PLANT FOR EXECUTING THE PROCEDURE

Country Status (1)

Country Link
DK (1) DK149840C (en)

Also Published As

Publication number Publication date
DK149840B (en) 1986-10-13
DK149840C (en) 1987-03-16

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