The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1976
Filed:
Oct. 07, 1974
Applicant:
Inventor:
Stig Arvid Petersson, Skelleftehamn, SW;
Assignee:
Boliden Aktiebolag, Stockholm, SW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 17 ; 55 73 ; 423542 ; 423543 ; 62 23 ;
Abstract
The method of recovering liquid sulphur dioxide from gases containing sulphur dioxide by washing with water in an absorption plant and then stripping off absorbed sulphur dioxide at subatmospheric pressure. Water is removed from the stripped gasesby cooling and drying and sulphur dioxide is removed by condensation. The whole system is kept at a subatmospheric pressure by pumping off residual gases after the sulphur dioxide condensation.