SE9103608L - PROCEDURE AND FILTER UNIT FOR CLEANING A CIRCULATING LIQUID IN A CLOSED CIRCUIT - Google Patents
PROCEDURE AND FILTER UNIT FOR CLEANING A CIRCULATING LIQUID IN A CLOSED CIRCUITInfo
- Publication number
- SE9103608L SE9103608L SE9103608A SE9103608A SE9103608L SE 9103608 L SE9103608 L SE 9103608L SE 9103608 A SE9103608 A SE 9103608A SE 9103608 A SE9103608 A SE 9103608A SE 9103608 L SE9103608 L SE 9103608L
- Authority
- SE
- Sweden
- Prior art keywords
- filter
- liquid
- circuit
- contaminant
- filter unit
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
- B01D37/025—Precoating the filter medium; Addition of filter aids to the liquid being filtered additives incorporated in the filter
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
A method and a filter unit for cleaning a liquid which circulates in a closed circuit, such as a central heating circuit, from particulate contaminant material, such as magnetite particles, comprises introducing into the circuit liquid soluble chemicals which are active in suspending and agglomerating the contaminant particles, and filtering the circuit liquid with the aid of a filter cartridge whose smallest filter medium openings are larger than a substantial proportion of the contaminant particles. By limiting the flow rate of the liquid through the filter cartridge to a given maximum filter surface load, corresponding to a value at which at least a 70 % reduction of a standard contaminant consisting of kaolin clay Grade C, EEC International, is obtained across the filter, the filter capacity is utilized to a very high degree and favourable separation or extraction of the contaminants is achieved. The filter unit may include a rate of flow limiting means which functions to set the throughflow to a value which will provide the maximum filter surface load in question essentially independently of the pressure drop across the filter.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9103608A SE502021C2 (en) | 1991-12-04 | 1991-12-04 | Method and apparatus for purifying a circulating liquid in a circulating circuit |
AU40285/93A AU4028593A (en) | 1991-12-04 | 1992-12-03 | Method and filter unit for purification of a circulating liquid in a closed circuit |
PCT/SE1992/000838 WO1993010880A1 (en) | 1991-12-04 | 1992-12-03 | Method and filter unit for purification of a circulating liquid in a closed circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9103608A SE502021C2 (en) | 1991-12-04 | 1991-12-04 | Method and apparatus for purifying a circulating liquid in a circulating circuit |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9103608D0 SE9103608D0 (en) | 1991-12-04 |
SE9103608L true SE9103608L (en) | 1993-06-05 |
SE502021C2 SE502021C2 (en) | 1995-07-17 |
Family
ID=20384528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9103608A SE502021C2 (en) | 1991-12-04 | 1991-12-04 | Method and apparatus for purifying a circulating liquid in a circulating circuit |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU4028593A (en) |
SE (1) | SE502021C2 (en) |
WO (1) | WO1993010880A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8522712D0 (en) * | 1985-09-13 | 1985-10-16 | Wickham & Co Ltd D | Control system |
US4990264A (en) * | 1989-10-13 | 1991-02-05 | Sherex Chemical Company, Inc. | Ore dewatering process and compositions therefor |
-
1991
- 1991-12-04 SE SE9103608A patent/SE502021C2/en not_active Application Discontinuation
-
1992
- 1992-12-03 AU AU40285/93A patent/AU4028593A/en not_active Abandoned
- 1992-12-03 WO PCT/SE1992/000838 patent/WO1993010880A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
SE502021C2 (en) | 1995-07-17 |
SE9103608D0 (en) | 1991-12-04 |
WO1993010880A1 (en) | 1993-06-10 |
AU4028593A (en) | 1993-06-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 9103608-7 Effective date: 19950119 |