Global Patent Index - EP 0874679 A4

EP 0874679 A4 2001-02-21 - METHOD AND APPARATUS FOR REMOVAL OF HAZARDOUS GASES FROM ENCLOSED STRUCTURES

Title (en)

METHOD AND APPARATUS FOR REMOVAL OF HAZARDOUS GASES FROM ENCLOSED STRUCTURES

Title (de)

METHODE UND APPARAT ZUR ENTFERNUNG VON SCHÄDLICHEN GASEN AUS GESCHLOSSENEN BEHÄLTERN.

Title (fr)

PROCEDE ET APPAREIL D'EXTRACTION DE GAZ DANGEREUX DE STRUCTURES CLOSES

Publication

EP 0874679 A4 (EN)

Application

EP 97904741 A

Priority

  • US 9700280 W
  • US 58461996 A
  • US 58489196 A

Abstract (en)

[origin: WO9725125A1] A method for removing hazardous gases having water solubility from storage tanks (22) by scrubbing steps is described together with a method for removing ethylene dichloride or hydrogen sulfide contamination from soil (66) is disclosed. A scrubbing tower (30) mounted on a mobile frame (70) that is movable between a horizontal transport position (A) and a vertical operating position (B) is also described. A means is provided for distributing gas upwardly (34) through the scrubbing tower (30), and water downwardly (38) through the scrubbing tower (30), when the tower (30) is in the vertical operating position (B). The apparatus (20) also includes a blower (26) and a pump (58) mounted on the mobile frame (70), the blower (26) being connectable with a source of hazardous gases enclosed within a storage vessel (22), and the pump (58) being connectable with a source of water (52). The apparatus (20) is especially beneficial in removing water soluble hazardous compounds, such as ethylene dichloride and hydrogen sulfide, from gaseous atmospheres.

IPC 1-7 (main, further and additional classification)

B01D 47/14; B01D 53/14; B09C 1/00

IPC 8 full level (invention and additional information)

B01D 47/06 (2006.01); B01D 47/00 (2006.01); B01D 53/14 (2006.01)

CPC (invention and additional information)

B01D 53/1487 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE DE ES FR GB IT NL PT

EPO simple patent family

WO 9725125 A1 19970717; CA 2226682 A1 19970717; EP 0874679 A1 19981104; EP 0874679 A4 20010221; JP 2002514969 A 20020521

INPADOC legal status


2004-02-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030801

2001-02-21 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010105

2001-02-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE DE ES FR GB IT NL PT

2001-02-21 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7B 01D 47/14 A, 7B 01D 53/14 B, 7B 09C 1/00 B

1999-08-11 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): AT BE DE ES FR GB IT NL PT

1998-11-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980223

1998-11-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE ES FR GB IT NL PT