DE3338572A1 - Process and apparatus for isolating dry solids from suspensions - Google Patents
Process and apparatus for isolating dry solids from suspensionsInfo
- Publication number
- DE3338572A1 DE3338572A1 DE19833338572 DE3338572A DE3338572A1 DE 3338572 A1 DE3338572 A1 DE 3338572A1 DE 19833338572 DE19833338572 DE 19833338572 DE 3338572 A DE3338572 A DE 3338572A DE 3338572 A1 DE3338572 A1 DE 3338572A1
- Authority
- DE
- Germany
- Prior art keywords
- drying
- filter
- filter cake
- driers
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007787 solid Substances 0.000 title claims abstract description 10
- 239000000725 suspension Substances 0.000 title claims abstract description 10
- 230000008569 process Effects 0.000 title abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 34
- 239000012065 filter cake Substances 0.000 claims abstract description 24
- 238000005406 washing Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000010009 beating Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/075—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements located in a closed housing and comprising scrapers or agitators on the cake side of the filtering elements, e.g. Nutsche- or Rosenmund-type filters for performing multiple step operations such as chemical reactions, filtering and cake treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
- B01D29/84—Handling the filter cake in the filter for purposes other than for regenerating for drying by gases or by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/78—Handling the filter cake in the filter for purposes other than for regenerating for washing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Verfahren und Apparat zum GewinnenMethod and apparatus for obtaining
trockener Feststoffe aus Suspensionen Die Erfindung betrifft ein Verfahren zum Gewinnen trockener Feststoffe aus Suspensionen und einen Apparat zum Durchführen dieses Verfahrens.dry solids from suspensions The invention relates to a method for recovering dry solids from suspensions and an apparatus for performing it this procedure.
In der chemischen Industrie sind bei zahlreichen Chargenprozessen Feststoffe aus einer Suspension abzufiltrieren, gegebenenfalls durch "Waschen" mit einer anderen Flüssigkeit zu reinigen und anschließend zum Entfernen der mechanisch nicht abtrennbaren Fliissigkeit thermisch zu trocknen. Die genannten Verfahrensschritte (Filtration, Waschen, Trocknen) lassen sich durch Hintereinanderschalten bekannter Einzelapparate (Nutsche - Rührbehälter - Nutsche -Trockner) oder durch Kombination der ebenfalls bekannten, auch zum Waschen des Gutes und zum mechanischen Austragen des gewaschenen Filterkuchens eingerichteten "Austragsnutschen" mit Trocknern (Austragnutsche - Trockner) oder schließlich durch Einsatz der gleichfalls bekannten "Filtertrockner" realisieren. Filtertrockner sind kippbare oder schwenkbare, geschlossene Einscheiben-Filter (Nutschen) mit einem Heizmantel und einem axial verstellbaren, vielfach auch reversierbaren und drehzahlregelbaren Rührwerk, dessen Rührorgan sich zum Verstreichen des Filterkuchens, zum Resuspendieren des Gutes beim Waschvorgang, zum Umschaufeln während der 'Urocknung und zum Austragen des fertigen Produktes eignet.There are numerous batch processes in the chemical industry To filter off solids from a suspension, if necessary by "washing" with another liquid to clean and then to remove the mechanically Thermally dry non-separable liquid. The procedural steps mentioned (Filtration, washing, drying) can be better known by connecting them in series Individual devices (suction filter - agitator tank - suction filter dryer) or a combination the well-known, also for washing the goods and for mechanical discharge of the washed filter cake set up "discharge nutsches" with dryers (discharge nutsche - dryer) or finally by using the also known "filter dryer" realize. Filter dryers are tiltable or swiveling, closed single-disk filters (Nutschen) with a heating jacket and an axially adjustable, often reversible and speed-adjustable agitator, whose agitator is used to spread the filter cake, for resuspending the goods during the washing process, for shoveling during the drying process and suitable for discharging the finished product.
Solche Filtertrockner ermöglichen die Ausführung der Verfahrensschritte Filtration", "Filterkuchenwäsche" und "thermische Trocknung"auf der Basis der Kontakttrocknung (Schaufeltrockner) in einem einzigen Apparat. Dies ist für viele Prozesse vorteilhaft; beispielsweise beschränkt sich die Reinigung bei häufigem Rezepturen-Wechsel auf nur einen Apparat, bei pharmazeutischen Produkten läßt sich (durch den Wegfall von Umfüllvorgängen und Beschränkung auf einen einzigen Apparat) leichter eine sterile Arbeitsweise sicherstellen usw. Als nachteilig erweist sich bei den bisher bekannten Filtertrocknern - bedingt durch ihre Arbeitsweise als Kontakttrockner (Schaufeltrockner) - die hohe mechanische und thermische Beanspruchung des Gutes: Eine (unerwünschte) Zerkleinerung des Gutes während der Trocknung läßt sich im allgemeinen nicht vermeiden, zumal das Mehrfunktions-Rührwerk nicht ausschließlich und somit nicht optimal auf die Betriebsphase "thermische Trocknung" abgestimmt werden kann, jedoch während der ganzen Trocknungsphase in Betrieb bleiben muß. Außerdem ist mit jeder Kontakttrocknung eine örtlich hohe thermische Beanspruchung und u. U. thermische Schädigung des Trockengutes verbunden. Als weiterer Nachteil ist die aufwendige Konstruktion eines solchen Filtertrockners - resultierend aus der Kipp- und Schwenkbarkeit des Aggregats - und daraus folgend der hohe Preis zu nennen.Such filter driers enable the process steps to be carried out Filtration "," filter cake washing "and" thermal drying "based on contact drying (Paddle dryer) in a single device. This is beneficial for many processes; For example, cleaning is limited to frequent recipe changes only one device, at pharmaceutical products can be (through the elimination of decanting processes and restriction to a single device) easier Ensure a sterile working method, etc. A disadvantage has been found in the hitherto known filter dryers - due to their mode of operation as contact dryers (Paddle dryer) - the high mechanical and thermal stress on the goods: An (undesired) comminution of the material during drying can generally be achieved not to be avoided, especially since the multi-function agitator is not exclusive and therefore cannot be optimally coordinated with the "thermal drying" operating phase, but must remain in operation during the entire drying phase. Also is with Every contact drying involves a locally high thermal stress and, under certain circumstances, thermal Damage to the dry material associated. Another disadvantage is the costly one Construction of such a filter dryer - resulting from the tilting and swiveling ability of the unit - and consequently the high price.
Ziel der Erfindung ist es, die Abtrennung fester Stoffe aus Suspensionen durch Filtration und gegebenenfalls die anschließende Reinigung des Filterkuchens durch Waschen sowie die darauf folgende thermische Trocknung in einem Apparat durchzuführen, welcher die Vorteile der bekannten Filtertrockner aufweist, ihre Nachteile jedoch vermeidet.The aim of the invention is to separate solid substances from suspensions by filtration and, if necessary, the subsequent cleaning of the filter cake to carry out by washing and the subsequent thermal drying in one apparatus, which has the advantages of the known filter driers, but their disadvantages avoids.
Dies geschieht erfindungsgemäß durch Kombination der Verfahrensschritte "Filtration", "Verstreichen des Filterkuchens", "Waschen des Filterkuchens" mit dem Verfahrensschritt ~Wirbelschicht-Trocknung" und Durchführung dieser Operationen in einem einzigen, dafür eingerichteten Apparat.According to the invention, this is done by combining the process steps "Filtration", "Spreading the filter cake", "Washing the filter cake" with the process step "fluidized bed drying" and carrying out these operations in a single, dedicated machine.
Der erfindungsgemäße Filtertrockner ist im wesentlichen eine geschlossene Austragsnutsche mit einem Rührwerk zum Verstreichen, Auflockern und Suspendieren des hilterkuchens bzw. zum Austragen des fertigen Produktes, sowie mit Einrichtungen zur Zufuhr und Verteilung des für die Wirbelschichttrocknung nötigen, gasförmigen Trocknungsmediums auf der Filtratablaufseite und schließlich mit einem Stutzen zum Abführen des verbrauchten Trocknungsgases auf der Filterkuchen seite.The filter dryer according to the invention is essentially a closed one Discharge suction filter with an agitator for spreading, loosening and suspending of the hilter cake or to discharge the finished product, as well as with facilities for the supply and distribution of the necessary for fluidized bed drying, gaseous drying medium on the filtrate discharge side and finally with a Nozzle for discharging the used drying gas on the filter cake side.
Die Zeichnung zeigt schematisch ein Ausführungsbeispiel eines erfindungsgemäßen Wirbelschicht-Filtertrockners. Der zylindrische Behältermantel 1 wird oben von einem gewölbten Deckel 2 und unten von einem angeflanschten, gewölbten Boden 3 abgeschlossen. Ein Siebboden 4 auf einem Tragrost 5 trennt den Innenraum in einen Filterkuchenraum 6 und einen Filtratsammelraum bzw. Trocknungsgas-Verteilungsraum 7 . Die Feststoff/Flüssigkeits-Suspension und die zum Waschen erforderliche Reinigungsflüssigkeit werden durch den Stutzen 8 zugeführt, das Filtrat fließt durch den Stutzen 9 ab. In der Trocknungsphase tritt das zur Wirbelschichttrocknung erforderliche Heißgas durch den Stutzen 10 mit Flüssigkeitsabweishaube 11 in den Trocknungsgas-Verteilungsraum 7 ein. Es durchströmt von unten nach oben den Siebboden 4 und den darüberbefindlichen Feststoff; dabei verwandelt es den Filterkuchen infolge seiner hohen Strömungsgeschwindigkeit in eine Wirbelschicht mit sehr günstigen Wärme- und Stoffaustauschbedingungen. In der ersten Trocknungsphase kann man nötigenfalls den Filterkuchen mittels des Rührwerks auflockern und damit die Ausbildung der Wirbelschicht erleichtern; im weitern Verlauf der Trocknung wird das Rührwerk nicht benötigt. Das verbrauchte Trocknungsgas verläßt den Filtertrockner durch den Gasaustritts-Stutzen 12.The drawing shows schematically an embodiment of an inventive Fluidized bed filter drier. The cylindrical container jacket 1 is at the top of a curved cover 2 and closed at the bottom by a flanged, curved base 3. A sieve bottom 4 on a support grate 5 separates the interior space into a filter cake space 6 and a filtrate collection space or drying gas distribution space 7. The solid / liquid suspension and the cleaning liquid required for washing are supplied through the nozzle 8, the filtrate flows out through the nozzle 9. Occurs in the drying phase the hot gas required for fluidized bed drying through the nozzle 10 with liquid deflector hood 11 into the drying gas distribution space 7. It flows through from bottom to top the sieve bottom 4 and the solid above it; in the process it transforms the filter cake due to its high flow velocity in a fluidized bed with very favorable Heat and mass transfer conditions. In the first drying phase you can if necessary loosen the filter cake by means of the agitator and thus the formation of the fluidized bed facilitate; the agitator is not required in the further course of the drying process. The used drying gas leaves the filter dryer through the gas outlet nozzle 12th
Das Rührwerk besteht aus dem Rührwerkzeug 13 mit Rührwelle 14, Abdichtung 15, Drehantrieb 16 sowie Hubwerk 17. Es erlaubt nach dem Filtrieren ein Aufsetzen des Rührwerkzeugs auf den Filterkuchen und Glattstreichen der Filterkuchen-Oberfläche, nach dem Einfüllen der Waschflüssigkeit ein Suspendieren des Filterkuchens in dieser, nach dem Abziehen der Wasch flüssigkeit ein Auflockern des Filterkuchens zwecks Erhöhung seiner Gasdurchlässigkeit und nach der Wirbelschichttrocknung ein Austragen des trockenen Fertigproduktes durch den seitlich im Behältermantel angeordneten Produktaustrag 18.The agitator consists of the agitator 13 with agitator shaft 14, seal 15, rotary drive 16 and lifting mechanism 17. After filtering, it can be put on the stirring tool on the filter cake and smoothing the surface of the filter cake, after the filling of the washing liquid a suspension of the filter cake in this, after removing the washing liquid to loosen the filter cake for the purpose Increase of its gas permeability and discharge after the fluidized bed drying of the dry finished product through the laterally arranged in the container shell Product discharge 18.
Die zur Aufstellung des Apparates erforderlichen Einrichtungen (Tragpratzen, Tragring, Füße) sind für das Verständnis unwesentlich und daher nicht dargestellt.The equipment required to set up the apparatus (support brackets, Support ring, feet) are not essential for understanding and are therefore not shown.
Der Einsatz des Wirbelschicht-Filtertrockners sei an einem Beispiel erläutert. In einem Chargenprozeß mögen 1 200 kg eines kristallinen Produktes mit einer Dichte von 2 000 kg/m3 und einer Korngröße zwischen 500 und 1 000 P m in wäßriger Suspension anfallen. Nach Filtration und gegebenenfalls Waschen des Filterkuchens mit Frischwasser möge die (mechanisch nicht durch Filtration und "Trockensaugen" abtrennbare) Restfeuchte noch 20 X betragen. Bei einer Filterkuchendicke von 0,5 m ist für diesen Anwendungsfall ein Filtertrockner mit einem Durchmesser von 1,6 m erforderlich. Zur Trocknung mit Heißluft (100 0C) benötigt man einen Luftdurchsatz von ca. 3 m3(i.N.)/s. Die "verbrauchte", feuchte Trockenluft verläßt den Apparat mit einer Temperatur von etwa 60 °C.The use of the fluidized bed filter dryer is an example explained. In a batch process, 1,200 kg of a crystalline product may also be used a density of 2,000 kg / m3 and a grain size between 500 and 1,000 μm in aqueous Incurred suspension. After filtration and, if necessary, washing of the filter cake with fresh water the (mechanically not by filtration and "dry suction" separable) residual moisture is still 20 X. With a filter cake thickness of 0.5 For this application, m is a filter drier with a diameter of 1.6 m required. Air throughput is required for drying with hot air (100 ° C) of approx. 3 m3 (normal) / s. The "used", moist dry air leaves the apparatus with a temperature of about 60 ° C.
Nach ca. 40 Minuten ist das Produkt trocken und kann ausgeschleust werden.After approx. 40 minutes the product is dry and can be discharged will.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833338572 DE3338572A1 (en) | 1983-10-24 | 1983-10-24 | Process and apparatus for isolating dry solids from suspensions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833338572 DE3338572A1 (en) | 1983-10-24 | 1983-10-24 | Process and apparatus for isolating dry solids from suspensions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3338572A1 true DE3338572A1 (en) | 1985-05-09 |
Family
ID=6212593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833338572 Ceased DE3338572A1 (en) | 1983-10-24 | 1983-10-24 | Process and apparatus for isolating dry solids from suspensions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3338572A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224000A1 (en) * | 1985-10-22 | 1987-06-03 | Zwag AG | Filtration device, in particular of the Nutsche type |
EP0250939A2 (en) * | 1986-06-12 | 1988-01-07 | Hans Joachim Dipl.-Ing. Titus | Suction filter drier |
CN101797493A (en) * | 2009-02-06 | 2010-08-11 | 上海抗体药物国家工程研究中心有限公司 | Method for preparing affinity chromatography medium in reaction kettle |
EP2510954A1 (en) * | 2011-04-12 | 2012-10-17 | Steris Europe, Inc. Suomen Sivuliike | Solids separator and method of treatment for biowaste |
WO2015145088A1 (en) | 2014-03-28 | 2015-10-01 | Eurenco | Method and device for the recovering, from suspensions containing explosive charges, said explosive charges, dry |
CN106731138A (en) * | 2016-12-07 | 2017-05-31 | 上海应用技术大学 | Hydrophobic solid powder wash mill |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0002847A1 (en) * | 1977-12-16 | 1979-07-11 | Chemap AG | Process for drying filter residues |
DE2854426A1 (en) * | 1978-12-16 | 1980-06-26 | Bayer Ag | Leaf filter with solvent removal by evaporation - having heat for evaporation provided by hot wash liquor used at end of filtration followed by evaluation |
-
1983
- 1983-10-24 DE DE19833338572 patent/DE3338572A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0002847A1 (en) * | 1977-12-16 | 1979-07-11 | Chemap AG | Process for drying filter residues |
DE2854426A1 (en) * | 1978-12-16 | 1980-06-26 | Bayer Ag | Leaf filter with solvent removal by evaporation - having heat for evaporation provided by hot wash liquor used at end of filtration followed by evaluation |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224000A1 (en) * | 1985-10-22 | 1987-06-03 | Zwag AG | Filtration device, in particular of the Nutsche type |
EP0250939A2 (en) * | 1986-06-12 | 1988-01-07 | Hans Joachim Dipl.-Ing. Titus | Suction filter drier |
EP0250939A3 (en) * | 1986-06-12 | 1989-10-11 | Hans Joachim Dipl.-Ing. Titus | Suction filter drier |
CN101797493B (en) * | 2009-02-06 | 2014-05-21 | 上海抗体药物国家工程研究中心有限公司 | Method for preparing affinity chromatography medium in reaction kettle |
CN101797493A (en) * | 2009-02-06 | 2010-08-11 | 上海抗体药物国家工程研究中心有限公司 | Method for preparing affinity chromatography medium in reaction kettle |
AU2012202141B2 (en) * | 2011-04-12 | 2014-06-05 | Steris Europe, Inc. Suomen Sivuliike | Solids separator for biowaste |
EP2510954A1 (en) * | 2011-04-12 | 2012-10-17 | Steris Europe, Inc. Suomen Sivuliike | Solids separator and method of treatment for biowaste |
US8764975B2 (en) | 2011-04-12 | 2014-07-01 | Steris Europe, Inc. Suomen Sivuliike | Solids separator and method of treatment for biowaste |
US9108872B2 (en) | 2011-04-12 | 2015-08-18 | Steris Europe, Inc. Suomen Sivuliike | Solids separator and method of treatment for biowaste |
WO2015145088A1 (en) | 2014-03-28 | 2015-10-01 | Eurenco | Method and device for the recovering, from suspensions containing explosive charges, said explosive charges, dry |
FR3019177A1 (en) * | 2014-03-28 | 2015-10-02 | Eurenco France | METHOD AND DEVICE FOR THE RECOVERY, FROM SUSPENSIONS CONTAINING EXPLOSIVE LOADS, OF SUCH EXPLOSIVE, DRY LOADS |
US9963397B2 (en) | 2014-03-28 | 2018-05-08 | Eurenco | Method and device for recovering, from suspensions containing explosive charges, said explosive charges, dry |
CN106731138A (en) * | 2016-12-07 | 2017-05-31 | 上海应用技术大学 | Hydrophobic solid powder wash mill |
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Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |