(19)
(11) EP 0 317 137 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.11.1989 Bulletin 1989/46

(43) Date of publication A2:
24.05.1989 Bulletin 1989/21

(21) Application number: 88310383.0

(22) Date of filing: 04.11.1988
(51) International Patent Classification (IPC)4: B01F 3/08, B01F 3/04
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 16.11.1987 US 121158

(71) Applicant: EXXON RESEARCH AND ENGINEERING COMPANY
Florham Park, New Jersey 07932-0390 (US)

(72) Inventors:
  • Hemjarani, Ramesh Relumal
    Millington New Jersey 07946 (US)
  • Ponzi, Peter Robert
    Randolph New Jersey 07869 (US)

(74) Representative: Somers, Harold Arnold et al
ESSO Engineering (Europe) Ltd. Patents & Licences Mailpoint 72 Esso House Ermyn Way
Leatherhead, Surrey KT22 8XE
Leatherhead, Surrey KT22 8XE (GB)


(56) References cited: : 
   
       


    (54) Surge drum adapted for damping of sinusoidal variations in the feed concentration


    (57) The present invention is directed toward the dampening of concentration variations in fluid streams, especially concentration variations that are substantially sinusoidal, by subjecting such streams to a plurality of backmixing steps whereby such concentration variations are reduced.
    In one embodiment of the present invention, there is provided a surge drum (10) that is divided into a predetermined number of mixing stages (14,15,­16,17), each of which is provided with means (18,19, 20,21) to create a fluid jet stream at substantially the inlet of the mixing stage and baffle means (21,22,23,24) positioned with respect to the respective inlet jet (12,18,19,20) for reversing the flow of the jet.







    Search report