Device for separating a heterogeneous mixture of matter and method for cleaning a filter unit

Patent metadata

Field	Value
Publication number	US-9782703-B2
Application number	US-201213630559-A
Country	US
Kind code	B2
Filing date	Sep 28, 2012
Priority date	Sep 30, 2011
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

The invention relates to a device ( 10 ) for separating a heterogeneous mixture of matter into at least one retentate and one filtrate, comprising
a housing ( 12 ) which is subdivided into a chamber for the heterogeneous mixture ( 20 ) of matter having at least one feed ( 14 ) and a filtrate chamber ( 21 ) having at least one outlet ( 16 ), a filter unit ( 22 ) which comprises at least one filter element ( 24 ), wherein the filter unit ( 22 ) is arranged in the chamber for the heterogeneous mixture ( 20 ) of matter, and a rinsing system ( 46, 47, 50, 50 ′) for cleaning the filter unit ( 22 ),

wherein the rinsing system ( 46, 47, 50, 50 ′) has at least one rinsing port ( 46, 47 ) which is constructed so as to introduce a stream, oriented tangentially to the shell surface ( 54 ), of a first washing medium into the chamber for the heterogeneous mixture ( 20 ) of matter. The invention further relates to a method for cleaning a filter unit.

First claim

We claim:

1. A filtration apparatus comprising:
a filter housing ( 12 ) having an inlet ( 14 ) and an outlet ( 16 );
a filter base ( 26 ) within said housing dividing said housing into an unfiltered or retentate chamber ( 20 ) and a filtrate chamber ( 21 ), said base having a plurality of holes ( 38 ) extending therethrough;
a plurality of filter candles ( 24 ) corresponding in number to the number of holes ( 38 ) in said base ( 26 ), and sealingly extending from said holes into said unfiltered or retentate chamber ( 20 );
an open holding system in said unfiltered or retentate section including:
a plurality of sleeves ( 32 ) corresponding in number and partially enclosing
each of said plurality of filter candles ( 24 ); and
one or more webs ( 34 ) connecting said sleeves ( 32 ) to each other and/or
said filter housing ( 12 );

a rinsing system comprising a plurality of rinsing ports ( 47 ) which are arranged in the lower region ( 48 ) of the housing ( 12 ), said rinsing ports including a tubular elongation ( 60 ) opening into said unfiltered or retentate chamber, said tubular elongation being constructed and arranged to tangentially deflect a stream of a first washing medium out into said unfiltered or retentate chamber, tangentially at a housing shell surface ( 54 ).

Assignees

• Wittmer Stefan
• Linder Juergen
• Welker Gerhard
• Wagner Marcus
• Basf Se

Inventors

• Wittmer Stefan
• Linder Juergen
• Welker Gerhard
• Wagner Marcus

Classifications

• B01D29/908

  provoking a tangential stream · CPC title

• B01D29/114 Primary

  arranged for inward flow filtration (B01D29/15, B01D29/33 take precedence) · CPC title

• B01D2201/0438

  mounted substantially vertically on plates at the lower side of the filter elements · CPC title

• B01D29/52

  in parallel connection · CPC title

• B01D29/66 Primary

  by flushing, e.g. counter-current air-bumps · CPC title