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DE10136728A1 - Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration - Google Patents

Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration

Info

Publication number
DE10136728A1
DE10136728A1 DE10136728A DE10136728A DE10136728A1 DE 10136728 A1 DE10136728 A1 DE 10136728A1 DE 10136728 A DE10136728 A DE 10136728A DE 10136728 A DE10136728 A DE 10136728A DE 10136728 A1 DE10136728 A1 DE 10136728A1
Authority
DE
Germany
Prior art keywords
water
mixer
reactor
zeolite
dried
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.)
Withdrawn
Application number
DE10136728A
Other languages
German (de)
Inventor
Dietrich Eichler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fan Separator GmbH
Original Assignee
Fan Separator GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fan Separator GmbH filed Critical Fan Separator GmbH
Priority to DE10136728A priority Critical patent/DE10136728A1/en
Publication of DE10136728A1 publication Critical patent/DE10136728A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

For drying solids as wet undissolved matter or sludges containing solid materials, zeolites are used to take up the liquid. The product (1) to be dried is separated in a screw press (2) into a damp crumbly phase (3) and a fluid paste phase (4). A part-flow (6) of the product for drying is passed to a mixer (5) by an elevator (7) where the product is mixed with the fluid phase and then the crumbly phase. Active zeolite balls (10), with a diameter of 2-5 mm, are transferred by a dosing unit (9) from a reactor (8) to the mixer to absorb the water. The output from the mixer is passed to a separation sieve (11) to extract the soaked zeolite. The wet zeolite balls are returned to the reactor by an elevator, to be regenerated by a hot gas at 300-400degreesC from a burner (14) for further use.

Description

Stand der TechnikState of the art

Die Trocknung von Schlämmen und feuchten Feststoffen mit dem Ziel der Verbesserung der Transport- und Lagerfähigkeit, der mikrobiologischen Deaktivierung oder der Vorbereitung einer anderweitigen Verarbeitung erlangt immer mehr an Bedeutung. The drying of sludges and moist solids with the aim of Improving the transport and storage capacity, the microbiological Deactivation or preparation for other processing always gets more important.

Eine Trocknung, beispielsweise in Anlagen für die Trocknung von Grünfutter ist nur dann möglich, wenn die Abgase nur mit einer geringe Menge an Schadstoffen belastet sind. Drying, for example in plants for drying green fodder, is only then possible if the exhaust gases contain only a small amount of pollutants are burdened.

Auch das Filtern oder Waschen der Abgase ist nur in Ausnahmen möglich. Filtering or washing the exhaust gases is only possible in exceptional cases.

Zur Lösung des Problems wird in der OF-DE 195 06 195 A1 ein Verfahren beschrieben, in dem durch die Zugebe von Zeolithen Schwermetalle aus kommunalen oder industriellen Schlämmen entfernt werden sollen. Bevorzugt werden darin Klärschlämme behandelt, die noch pump- und fließfähig oder stichfest schmierend sind. To solve the problem, a method is described in OF-DE 195 06 195 A1 described in which heavy metals from the addition of zeolites municipal or industrial sludge to be removed. Prefers it processes sewage sludge that is still pumpable, flowable or puncture-proof are lubricating.

In der Anmeldung PCT/NL 99/00443 wird im allgemeinen beschrieben, wie mit Hilfe der Zugabe von Zeolithen feuchte Stoffe getrocknet werden sollen. The application PCT / NL 99/00443 generally describes how to use with the addition of zeolites moist substances should be dried.

Beide Schriften gehen davon aus, das zu trocknende Produkt direkt mit dem Zeolith zu vermischen. Durch die anhaftenden schmierigen und leimigen Bestandteile wird die Oberfläche des Zeolithes belastet. Das Zeolith steht damit nur eine bedingte Zeit zur Rezirkulation zur Verfügung. Bei der Reaktivierung werden die auf der Oberfläche haftenden Stoffe in den Abgasstrom mit abgegeben und belasten die Umwelt. Both writings assume that the product to be dried directly with the zeolite to mix. Due to the sticky greasy and gluey components strained the surface of the zeolite. The zeolite is therefore only a limited time available for recirculation. When reactivated, the on the Surface adhering substances are released into the exhaust gas flow and pollute the Environment.

Weiterhin erfolgt durch die hohe Affinität des Zeolithes zum Wasser während des Mischvorganges eine schnelle Reaktion, die die Bildung von belasteten Abgasen im Mischer verursacht und die gesondert abzuführen sind. Auch diese Abgase sind mit unerwünschten Stoffen belastet und müssen gesondert aufbereitet werden. Furthermore, due to the high affinity of the zeolite for water during the Mixing process a quick reaction that prevents the formation of polluted exhaust gases in the Mixers caused and must be removed separately. These exhaust gases are also included undesirable substances and must be processed separately.

Ziel der ErfindungAim of the invention

Das Ziel der Erfindung ist es, eine Verschmutzung der Oberfläche des Zeolithes verhindern und die Geschwindigkeit der Verdampfung so zu beeinflussen, daß durch die Absorption des Zeolithes die gesamte Dampfmenge aufgenommen wird und dadurch keine zusätzlichen Abgase im Mischer entstehen. The aim of the invention is to contaminate the surface of the zeolite prevent and influence the rate of evaporation so that by the absorption of the zeolite the total amount of steam is absorbed and this means that no additional exhaust gases are generated in the mixer.

Merkmale der ErfindungFeatures of the invention

Es wurde gefunden, daß bei der Behandlung von Stoffen mit hohen Gehalten an Trockensubstanz einerseits eine Verschmutzung der Oberfläche der 2-5 mm großen Kugeln des Zeolithes dann nicht erfolgt, wenn die schmierigen und leimigen Bestandteile des zu trocknenden Produktes in abgetrockneter Form vorliegen. It has been found that in the treatment of substances with high levels Dry substance, on the one hand, contamination of the surface of the 2-5 mm large Balls of zeolite do not occur when the greasy and gluey Components of the product to be dried are in dried form.

Andererseits ist die Verdampfung des verbliebenen Wassers aus diesem Produkt mit einem hohen Gehalt an Trockensubstanz schwerer. On the other hand, the evaporation of the remaining water from this product is included a high content of dry matter heavier.

Die hohe Affinität des Zeolithes zu Wasser ist damit in der Lage, bei Reaktionstemperaturen von über 100°C den langsamer ausgetriebenen Wasserdampf aufzunehmen, ohne das Anteile des selben aus dem Vorgang abgeführt werden müssen. The high affinity of the zeolite for water is therefore able to Reaction temperatures of over 100 ° C the slower expelled Absorb water vapor without sharing the same from the process must be dissipated.

Erfindungsgemäß wird das Ziel der Erfindung dadurch erreicht, daß ein Teilstrom an getrocknetem Produkt zurückgeführt und mit dem Ausgangsprodukt intensiv vermischt wird. According to the invention, the aim of the invention is achieved in that a partial flow dried product returned and intensive with the starting product is mixed.

Ausführungsbeispielembodiment

Das zu trocknende Produkt (1) wird in der Schneckenpresse (2) in eine feucht krümelige Phase (3) und eine flüssig pastöse Phase (4) aufgetrennt. Dem Mischer (5) wird zuerst ein Teilstrom (6) an getrockneten Produkt über den Elevator (7) zugeführt und zuerst mit der abgetrennten flüssig pastösen Phase (4) und danach mit der abgetrennten feucht krümligen Phase (3) vermengt. The product ( 1 ) to be dried is separated into a moist crumbly phase ( 3 ) and a liquid pasty phase ( 4 ) in the screw press ( 2 ). The mixer ( 5 ) is first fed a partial flow ( 6 ) of dried product via the elevator ( 7 ) and first mixed with the separated liquid pasty phase ( 4 ) and then with the separated moist crumbly phase ( 3 ).

Aus dem Reaktor (8) gelangt danach über die Dosiereinrichtung (9) das aktivierte Zeolith (10) in den Mischer (5) und beginnt sofort damit, das in dem zu trocknenden Produkt enthaltene Wasser in sich aufzunehmen. The activated zeolite ( 10 ) then passes from the reactor ( 8 ) via the metering device ( 9 ) into the mixer ( 5 ) and immediately begins to absorb the water contained in the product to be dried.

Nach einer entsprechenden Zeit der Absorption des Wassers in das Zeolith gelangt die Gesamtmischung in die Trenneinrichtung (11), in der beispielsweise über Siebe das nun trockene Produkt von dem mit Wasser beladenen Zeolith getrennt wird. Das trockene Produkt (7) wird nun aus der Anlage herausgeführt. After a corresponding time of absorption of the water into the zeolite, the entire mixture reaches the separating device ( 11 ), in which the now dry product is separated from the zeolite loaded with water, for example via sieves. The dry product ( 7 ) is now led out of the system.

Das mit dem absorbierten Wasser beladene Zeolith gelangt über den Elevator (10) in den Reaktor (8) und wird hier durch 300-400°C heißes Gas, welches in der Brenneinrichtung (14) erzeugt wird reaktiviert. Das so ausgetriebene Wasser wird als Wasserdampf über den Ventilator abgesaugt und als unbelastetes Abgas in die Atmosphäre abgeführt. The zeolite loaded with the absorbed water reaches the reactor ( 8 ) via the elevator ( 10 ) and is reactivated here by gas heated to 300-400 ° C. which is generated in the combustion device ( 14 ). The water expelled in this way is extracted as water vapor via the fan and discharged into the atmosphere as unloaded exhaust gas.

Claims (1)

Verfahren zur Trocknung von wäßrig feuchten Feststoffen oder Schlämmen, die mit Inhaltsstoffen belastet sind, die im getrockneten Feststoff verbleiben und nicht in das abzutreibenden Wasser beziehungsweise den Wasserdampf abgegeben werden sollen, mit Hilfe von Zeolithen, die nach dem Mischen und einer entsprechenden Reaktionszeit wieder abgetrennt werden, dadurch gekennzeichnet, daß eine solche Menge an bereits getrocknetem Feststoff in den feuchten Feststoff oder dem Schlamm eingemischt wird, daß leimige oder klebrige Stoffe abgetrocknet werden und die Mischung dadurch krümlig trocken vorliegt und dadurch außerdem eine schnelle Verdampfung des abzutreibenden Wassers erschwert wird und erst danach das aus 2-5 mm großen Kugeln bestehende Zeolith dem so vorbehandelten und vorgetrockneten Feststoff in einer solchen Menge zugegeben wird, die der abzutrocknenden Menge an Wasser im Verhältnis zur Aufnahmefähigkeit des Zeolithes entspricht. Process for drying water-moist solids or sludges which are contaminated with ingredients which remain in the dried solid and should not be released into the water or water vapor to be removed, with the aid of zeolites, which are separated off again after mixing and a corresponding reaction time , characterized in that such an amount of already dried solid is mixed into the wet solid or the sludge, that gluey or sticky substances are dried and the mixture is crumbly dry and thereby also makes rapid evaporation of the water to be removed more difficult and only afterwards the zeolite consisting of balls of 2-5 mm in size is added to the pre-treated and pre-dried solid in such an amount that corresponds to the amount of water to be dried in relation to the absorption capacity of the zeolite.
DE10136728A 2001-07-27 2001-07-27 Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration Withdrawn DE10136728A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10136728A DE10136728A1 (en) 2001-07-27 2001-07-27 Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10136728A DE10136728A1 (en) 2001-07-27 2001-07-27 Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration

Publications (1)

Publication Number Publication Date
DE10136728A1 true DE10136728A1 (en) 2003-02-13

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DE10136728A Withdrawn DE10136728A1 (en) 2001-07-27 2001-07-27 Drying solid matter, from liquids and sludge, uses zeolite balls in the mixer to absorb the water, which are returned to a reactor to be heated by hot gases and dissipate the water as steam for regeneration

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8302325B2 (en) 2010-09-30 2012-11-06 Ross Technology Corporation Methods and compositions for drying coal
CN104034129A (en) * 2014-05-28 2014-09-10 中国矿业大学 Competitive adsorption dehydration coal slurry indirect drying device and method
US9004284B2 (en) 2009-10-01 2015-04-14 Vitrinite Services, Llc Mineral slurry drying method and system
US9651306B2 (en) 2013-03-15 2017-05-16 Federal-Mogul Ignition Company Method for drying seal materials for ignition devices
CN108585426A (en) * 2018-05-21 2018-09-28 太仓市友联干燥粉碎设备有限公司 A kind of river sludge drying system
CN109502743A (en) * 2018-12-28 2019-03-22 上海细水荷环保科技有限公司 A kind of landscape water-treatment biological dam
CN113244875A (en) * 2021-06-04 2021-08-13 江苏固家智能科技有限公司 Intelligent efficient semi-solid molecular pulping device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9004284B2 (en) 2009-10-01 2015-04-14 Vitrinite Services, Llc Mineral slurry drying method and system
US9759486B2 (en) 2009-10-01 2017-09-12 Vitrinite Services, Llc Mineral slurry drying method and system
US9791211B2 (en) 2009-10-01 2017-10-17 Ross Technology Corporation Methods and compositions for drying coal
US8302325B2 (en) 2010-09-30 2012-11-06 Ross Technology Corporation Methods and compositions for drying coal
US9651306B2 (en) 2013-03-15 2017-05-16 Federal-Mogul Ignition Company Method for drying seal materials for ignition devices
CN104034129A (en) * 2014-05-28 2014-09-10 中国矿业大学 Competitive adsorption dehydration coal slurry indirect drying device and method
CN104034129B (en) * 2014-05-28 2015-11-18 中国矿业大学 A kind of coal slime contact drying device and method of competitive adsorption dehydration
CN108585426A (en) * 2018-05-21 2018-09-28 太仓市友联干燥粉碎设备有限公司 A kind of river sludge drying system
CN109502743A (en) * 2018-12-28 2019-03-22 上海细水荷环保科技有限公司 A kind of landscape water-treatment biological dam
CN113244875A (en) * 2021-06-04 2021-08-13 江苏固家智能科技有限公司 Intelligent efficient semi-solid molecular pulping device

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