Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 37 - Processes of filtration
Patents for B01D 37 - Processes of filtration (4,716)
12/1990
12/13/1990WO1990015025A1 Electrolytic water purification
12/13/1990DE3918527A1 Device for disposal of sewage sludge - comprises rotating drum dryer and filter band press used instead of centrifuge to improve throughput of sludge drying system
12/11/1990US4976876 Point-of-use membrane filtration system
12/10/1990WO1990014872A1 Method and apparatus for clarifying liquids
12/10/1990CA2034006A1 Method and apparatus for clarifying liquids
11/1990
11/29/1990WO1990014311A1 Method of water treatment
11/28/1990EP0398900A1 Production of filter cakes and the like
11/22/1990EP0397864A1 Agglutination reaction vessel
11/16/1990WO1990014144A1 Laboratory filtration apparatus
11/16/1990CA2057925A1 Laboratory filtration apparatus
11/13/1990US4970001 Flux; nontoxic
11/13/1990CA1276080C Bs&w measurement apparatus and method
11/07/1990EP0396042A2 The use of chitosan to improve membrane filter performance
11/01/1990WO1990012919A1 Dewatering device
11/01/1990WO1990012635A1 Attachment for a separator
10/1990
10/31/1990EP0394265A1 Method for size separation of particles.
10/25/1990DE4012104A1 Separator system for machinery coolant-lubricants has alarm system - indicating excessive pressure difference across filter and need for cleaning
10/17/1990EP0392726A2 Filter device
10/17/1990EP0392715A2 Conditioning system for water based can sealants
10/10/1990EP0391687A1 Treatment of alcoholic beverages
10/10/1990CA2014147A1 Conditioning system for water based can sealants
10/09/1990US4961862 Amendment addition system and method for twin belt press filter
10/04/1990DE3910579A1 Apparatus for separating off suspended matter from water
10/03/1990CN2063044U Protecting system for preventing coagulant from penetrating during treating water
09/1990
09/20/1990WO1990010490A1 Filter for continuous filtration
09/20/1990DE3908222A1 Process and apparatus for conveying a suspension to a filter press
09/14/1990WO1990010489A1 Filter for continuous filtration
09/14/1990CA2027566A1 Filter for continuous filtration
09/12/1990EP0386030A1 A method of and plant for purifying water
09/05/1990EP0385006A1 Removing haze from dewaxed hydrocarbon oil mixture boiling in the lubricating oil range
09/05/1990EP0367792A4 Two-stage batch filter apparatus and filtration process
09/04/1990US4954267 Hydrocarbon reclaimer system
08/1990
08/24/1990WO1990009835A1 Flocculating apparatus
08/16/1990EP0382097A1 Automatic filter system
08/09/1990WO1990008646A1 Process and device for operating a pressure filter for liquid-solid mixtures
08/07/1990CA2009267A1 Automatic filter system
08/02/1990DE3902201A1 Verfahren und vorrichtung zum betrieb eines auspressfilters fuer fluessigkeits-feststoff-gemische Method and device for operating a pressure filter for liquid-solid mixtures is
07/1990
07/31/1990US4944887 Countercurrent flow
07/25/1990EP0379054A2 Filter device
07/24/1990US4943379 Fluid flow, backwashing reservoir, valves, shock
07/19/1990DE3901292A1 Process and apparatus for conditioning an aqueous sludge for filter press treatment
07/18/1990EP0377824A2 Device for separating solids from suspension
07/18/1990CN1008810B Fluid purification system
07/10/1990US4940550 Chemical flocculant
07/04/1990EP0375739A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size.
07/03/1990US4938787 Filter device and filter apparatus comprising such filter devices
06/1990
06/26/1990CA1270608A1 Separation of caustic liquor, lime sludge and sludge in a causticising process
06/05/1990US4931176 Installation for the separation of the constituents of a suspension
06/05/1990US4931175 Water clarifying apparatus
05/1990
05/29/1990US4929363 Method for filtering a fluid
05/29/1990US4929355 Method and apparatus for the separation of caustic liquor, lime sludge and sludge in a causticizing process
05/16/1990EP0367792A1 Two-stage batch filter apparatus and filtration process
05/08/1990US4923601 Filter system having multiple filter elements and backflushing assemblies
05/08/1990US4923600 Water clarification system adapted for removing particulate matter of greater than a predetermined size
05/08/1990US4923068 Automatic filter system
05/02/1990CN2056604U Dynamic membrane water filter using porous ceramic filter as back line
05/01/1990CA1268427A1 Filter for continuous filtering of a suspension under pressure
04/1990
04/26/1990DE3835672A1 Process and apparatus for monitoring the degree of fouling of filters
04/25/1990EP0365165A2 A method and an apparatus for extracting liquid from a sludge
04/25/1990EP0364545A1 Process and installation for recovering oils and fats from natural products
04/24/1990US4919905 Reducing nitrogen oxide into harmless nitrogen using denitrating catalyst while introducing mmonia
04/24/1990US4919801 Control system for pump cycling
04/03/1990CA1267367A1 Procedure for filtering lime sludge meant to be regenerated to lime
03/1990
03/27/1990US4911848 Adjustment of solid content; adding flocculant; spreading mixture and drying
03/20/1990US4910369 Conditioning system for water based can sealants
03/20/1990US4910334 Recovery of overbased alkaline earth metal additives from centrifugates
03/20/1990US4909937 Tubular filter enclosed in housing
03/07/1990EP0356815A2 Method for lowering the melt viscosity of aromatic polycarbonates, aromatic and/or araliphatic polyesters
03/06/1990US4906369 Apparatus for dewatering sludge and similar substances
03/01/1990DE3828579A1 Method for the filtration of waste water (effluent) treated in sewage treatment plants and apparatus for carrying out the method
02/1990
02/27/1990US4904380 Precoat filter assembly
02/14/1990EP0354317A1 Filtering device
02/14/1990CN1039580A Method for recovering crystals from crystal-containing slurry
02/06/1990US4898667 Point-of-use membrane filtration system
01/1990
01/30/1990CA1265267A1 Fluid clarifying assembly
01/16/1990US4894158 Porous filter element with undulations
01/09/1990US4892663 Quaternary ammonium compounds
01/03/1990EP0167621B1 Mineral dewatering method
12/1989
12/20/1989CN1038030A Filter for separation of solid from hot gas or liquid
12/13/1989EP0345491A2 Filter for the separation of solids from heat gaseous or liquid media
12/12/1989US4886599 Filter cartridge with series elements for chemical and mechanical filtration
12/06/1989EP0344152A1 Process and installation for dewatering waste water sludge.
12/05/1989CA1263770A1 Dewatering solids suspensions
11/1989
11/30/1989WO1989011323A1 Process for recovering crystals from slurry
11/15/1989EP0341763A2 Method to filter sugar juice and other viscous liquids
11/07/1989US4879049 Method of removal of polycyclic aromatic hydrocarbons from a liquid
10/1989
10/25/1989EP0338043A1 Process and plant for clarifying liquids, in particular raw juice
10/17/1989US4874533 Papermaking
10/10/1989US4872981 Split inlet for filter
10/10/1989US4872908 Metal treatment
10/05/1989WO1989009255A1 Process and installation for recovering oils and fats from natural products
10/05/1989WO1989009091A1 Process and arrangement for treating recirculated drilling mud in drilling for oil and gas
09/1989
09/27/1989EP0334527A2 Slime control for primary filtration systems
09/27/1989CN2044895U Multifunction press filter
09/26/1989US4869829 Process for separating solids with a keratin filter aid
09/21/1989WO1989008618A1 Sludge treatment system
09/19/1989US4867886 Method and apparatus for controlling sludge flocculant flow
09/14/1989DE3739153C1 Vorrichtung zur Ermittlung des Beginns eines Verfalls von bewegten,fluessigkeitsgeschmierten Teilen Device for determining the start of a decay of moving, parts fluessigkeitsgeschmierten
09/08/1989WO1989007972A1 Method and apparatus for removing liquid from permeable material
09/05/1989US4863609 Process for the fractional separation of protein mixtures by means of membranes
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