The invention relates to a method for recovering sulfuric acid from sulfurous by-products which arise in processes for preparing 2-hydroxy-4-methylthiobutyric acid (MHA) , wherein the sulfuric acid accumulates in a grade in which it can be directly re-employed in such processes For this purpose the combustion gas containing S02 is passed through a sulfuric H202 solution in which the S02 is oxidised to form sulfuric acid.

Patent Information

Application #

Filing Date

03 December 1998

Publication Number

Publication Type

Invention Field

Status

Email

Parent Application

Patent Number

Legal Status

Grant Date

2005-09-16

Renewal Date

Applicants

DEGUSSA AG

BENNINGSENPLATZ 1, D-40474 DUSSELDORF

Inventors

1. DR. HANS ALBRECHT HASSEBERG

SOMMERBERGSTRASSE 34, DE-63584 GRÜNDAU

2. DR.HANS JOACHIM HASSELBACH

DEUTSCHORDENSTRASSE 6, DE-63571 GELNHAUSEN

3. DR. KLAUS HUTHMACHER

LÄRCHENWEG 18, DE-63571 GELNHAUSEN

4. VOLKER HÄFNER

AM BRÜHL 8, DE-63505 LANGENSELBOLD

5. HARALD HEINZEL

SANDPLACKENSTRASSE 26, DE-60488 FRANKFURT

Specification

Documents

Application Documents

#	Name	Date
1	2125-cal-1998-granted-translated copy of priority document.pdf	2011-10-07
2	2125-cal-1998-granted-specification.pdf	2011-10-07
3	2125-cal-1998-granted-reply to examination report.pdf	2011-10-07
4	2125-cal-1998-granted-priority document.pdf	2011-10-07
5	2125-cal-1998-granted-letter patent.pdf	2011-10-07
6	2125-cal-1998-granted-gpa.pdf	2011-10-07
7	2125-cal-1998-granted-form 6.pdf	2011-10-07
8	2125-cal-1998-granted-form 5.pdf	2011-10-07
9	2125-cal-1998-granted-form 3.pdf	2011-10-07
10	2125-cal-1998-granted-form 2.pdf	2011-10-07
11	2125-cal-1998-granted-form 1.pdf	2011-10-07
12	2125-cal-1998-granted-examination report.pdf	2011-10-07
13	2125-cal-1998-granted-drawings.pdf	2011-10-07
14	2125-cal-1998-granted-description (provisional).pdf	2011-10-07
15	2125-cal-1998-granted-description (complete).pdf	2011-10-07
16	2125-cal-1998-granted-correspondence.pdf	2011-10-07
17	2125-cal-1998-granted-claims.pdf	2011-10-07
18	2125-cal-1998-granted-abstract.pdf	2011-10-07
19	02125-cal-1998-priority document.pdf	2011-10-07
20	02125-cal-1998-gpa.pdf	2011-10-07
21	02125-cal-1998-form-5.pdf	2011-10-07
22	02125-cal-1998-form-3.pdf	2011-10-07
23	02125-cal-1998-form-2.pdf	2011-10-07
24	02125-cal-1998-form-1.pdf	2011-10-07
25	02125-cal-1998-drawings.pdf	2011-10-07
26	02125-cal-1998-description(complete).pdf	2011-10-07
27	02125-cal-1998-correspondence.pdf	2011-10-07
28	02125-cal-1998-claims.pdf	2011-10-07
29	02125-cal-1998-abstract.pdf	2011-10-07