C01B17/58 - CPC Classification Index

ClassID:

84591 ⎘

C01B17/58 - CPC Classification

Classification description:

Sulfur; Compounds thereof; Sulfur dioxide; Sulfurous acid; Preparation of sulfur dioxide Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid

Sub-classes:

C01B17/585 » {from ammonium sulfate containing sulfuric acid solutions} 0

Recent Application in this class:

20250206611

2025-06-26

PROCESS AND APPARATUS FOR ACID REGENERATION

20240351878

2024-10-24

PROCESS AND REDOX FURNACE FOR ACID REGENERATION

20230339752

2023-10-26

Process and apparatus for acid regeneration

20220371890

2022-11-24

Method for preparing electronic grade sulfuric acid from waste sulfuric acid solution

20190177161

2019-06-13

Process for the production of sulfur trioxide

20140299584

2014-10-09

Plasma whirl reactor apparatus and methods of use

20140299459

2014-10-09

Plasma whirl reactor apparatus and methods of use

20100254889

2010-10-07

METHOD FOR PRODUCING SULFURIC ACID

20100126395

2010-05-27

Process for producing steam and/or power from oil residues with high sulfur content

#10

20100044483

2010-02-25

Plasma whirl reactor apparatus and methods of use

#11

20100044477

2010-02-25

Plasma whirl reactor apparatus and methods of use

#12

20090317321

2009-12-24

DECOMPOSITION OF SPENT SULFURIC ACID USING OXYGEN

#13

20090226353

2009-09-10

Process for treating acid gas in staged furnaces with inter-stage heat recovery

#14

20080213149

2008-09-04

Process for producing steam and/or power from oil residues

#15

20050010064

2005-01-13

Method for purifying spent acid