DE3809115A1 - Process for decontaminating substances with a hollow-screw combination - Google Patents

Process for decontaminating substances with a hollow-screw combination

Info

Publication number
DE3809115A1
DE3809115A1 DE19883809115 DE3809115A DE3809115A1 DE 3809115 A1 DE3809115 A1 DE 3809115A1 DE 19883809115 DE19883809115 DE 19883809115 DE 3809115 A DE3809115 A DE 3809115A DE 3809115 A1 DE3809115 A1 DE 3809115A1
Authority
DE
Germany
Prior art keywords
trough
snails
screw
last
possibly
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Withdrawn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
DE19883809115
Other languages
German (de)
Inventor
Artur Richard Greul
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19883809115 priority Critical patent/DE3809115A1/en
Publication of DE3809115A1 publication Critical patent/DE3809115A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/06—Reclamation of contaminated soil thermally

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Process for decontaminating substances, preferably earth, in a system of hollow screws arranged one above the other, with indirect heating.

Description

Aufgabe der Erfindung ist es ein Verfahren zur Dekontaminie­ rung von Stoffen, vorzugsweise Erdreich zu schaffen, das auch den Durchsatz großer Mengen, bei indirekter Aufheizung er­ möglicht.The object of the invention is a method for decontamination Substance, preferably to create soil, that too the throughput of large quantities, with indirect heating he possible.

Vom Stand der Technik sind verschiedene Verfahren bekannt, die aber bei großen Durchsatzmengen immer nur durch Direkt­ beheizung, wie im Drehrohr, erreicht werden können.Various methods are known from the prior art, but with large throughputs, this is only possible with direct heating, as in the rotary tube, can be achieved.

Gelöst wird diese Aufgabe dadurch, daß mindestens 3 Hohl­ schnecken, die jede für sich in einem oben verschlossenen Trog, der als Doppelmanteltrog ausgebildet ist, über­ einander angeordnet sind und alle Schnecken mit einem oder vorzugsweise jede Schnecke für sich von einem eigenen Wärme­ trägermedium, z. B. Heißdampf, Sattdampf, Diphyl etc. oder flüssigem Natrium durchströmt und aufgeheizt werden, wobei auch jeweils der Doppelmanteltrog getrennt mit durchströmt wird, und das zu dekontaminierende Material über den Eintrag, ggf. durch eine Schleuse, in die erste Schnecke eingetragen und durch die Schneckenbewegung und einem Übergang von einem Trog in den anderen, bei stetigem Aufheizen weiter befördert und an der letzten Schnecke über einen Austrag, ggf. durch eine Schleuse, ausgeworfen wird, und die Verdampfungsprodukte, in der ersten Stufe meist Wasserdampf, über Leitungen, vor­ zugsweise getrennt abgezogen und einer Verwertung oder Besei­ tigung zugeführt werden.This problem is solved in that at least 3 cavities snails, each one locked in a top Trough, which is designed as a double jacket trough, over are arranged one above the other and all snails with one or preferably each snail by itself of its own warmth carrier medium, e.g. B. superheated steam, saturated steam, diphyl etc. or flowing through liquid sodium and heated, whereby also flows through the double jacket trough separately and the material to be decontaminated via the entry, possibly through a sluice, entered in the first screw and by the screw movement and a transition from one Trough in the other, conveyed further with constant heating and on the last screw via a discharge, if necessary through a lock, is ejected, and the evaporation products, in the first stage mostly water vapor, via pipes deducted separately and a recovery or Besei be fed.

Die Menge des Durchsatzes wird weitgehendst vom Durchmesser der Schnecken sowie der Aufheizgeschwindigkeit bestimmt.The amount of throughput largely depends on the diameter the screws and the heating rate.

Claims (3)

1. Verfahren zur Dekontaminierung von Stoffen z. B. Erdreich, welches mit Kohlenwasserstoffen kondaminiert ist, dadurch gekennzeichnet, daß
  • - mindestens 3 Hohlschnecken (40), die jede für sich in einem oben verschlossenen Trog (41), der als Doppel­ manteltrog (42) ausgebildet ist, übereinander angeordnet sind,
  • - alle Schnecken mit einem oder vorzugsweise jede Schnecke für sich von einem eigenen Wärmeträgermedium, z. B. Heißdampf, Sattdampf, Diphyl etc. oder flüssigem Natrium durchströmt und aufgeheizt werden, wobei auch jeweils der Doppelmanteltrog getrennt mit durchströmt wird,
  • - das zu dekontaminierende Material über den Eintrag (43), ggf. durch eine Schleuse, in die erste Schnecke einge­ tragen und durch die Schneckenbewegung und einem Über­ gang (44) von einem Trog in den anderen, bei stetigem Aufheizen weiter befördert und an der letzten Schnecke über einen Austrag (45), ggf. durch eine Schleuse, aus­ geworfen wird,
  • - die Verdampfungsprodukte, in der ersten Stufe meist Wasserdampf, über Leitungen (46), vorzugsweise getrennt abgezogen und einer Verwertung oder Beseitigung zuge­ führt werden.
1. Process for the decontamination of substances z. B. Soil which is contaminated with hydrocarbons, characterized in that
  • at least 3 hollow screws ( 40 ), which are each arranged one above the other in a trough ( 41 ) which is closed at the top and which is designed as a double jacket trough ( 42 ),
  • - All snails with one or preferably each snail from its own heat transfer medium, for. B. superheated steam, saturated steam, diphyl etc. or liquid sodium are flowed through and heated, the double jacket trough also being flowed through separately,
  • - The material to be decontaminated via the entry ( 43 ), possibly through a sluice, into the first screw and carried by the screw movement and a transition ( 44 ) from one trough to the other, with constant heating and transported to the the last screw is thrown out through a discharge ( 45 ), possibly through a lock,
  • - The evaporation products, mostly water vapor in the first stage, are drawn off via lines ( 46 ), preferably separately, and are recycled or disposed of.
2. Verfahren nach Anspruch 1, dadurch gekennzeich­ net, daß ein Aufheizungsbereich mehrere Schnecken umfas­ sen kann.2. The method according to claim 1, characterized in net that a heating area comprises several snails can sen. 3. Verfahren nach Anspruch 1, dadurch gekennzeich­ net, daß die letzte Schnecke oder die letzten Schnecken unten als Kühlstufe ausgebildet sind.3. The method according to claim 1, characterized in net that the last snail or the last snails are designed as a cooling stage below.
DE19883809115 1988-03-18 1988-03-18 Process for decontaminating substances with a hollow-screw combination Withdrawn DE3809115A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883809115 DE3809115A1 (en) 1988-03-18 1988-03-18 Process for decontaminating substances with a hollow-screw combination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883809115 DE3809115A1 (en) 1988-03-18 1988-03-18 Process for decontaminating substances with a hollow-screw combination

Publications (1)

Publication Number Publication Date
DE3809115A1 true DE3809115A1 (en) 1989-09-28

Family

ID=6350090

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883809115 Withdrawn DE3809115A1 (en) 1988-03-18 1988-03-18 Process for decontaminating substances with a hollow-screw combination

Country Status (1)

Country Link
DE (1) DE3809115A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921591A1 (en) * 1989-06-30 1991-01-03 Weiss Gmbh & Co Leonhard METHOD AND DEVICE FOR REMOVING VOLATILE POLLUTANTS FROM EARTH SOILS
WO1992018214A2 (en) * 1991-04-10 1992-10-29 Remediation Technologies, Inc. System and method for removing a volatile component from a matrix
DE9213599U1 (en) * 1992-10-08 1993-01-28 Kiefl Kg, 8035 Gauting, De
EP0626215A1 (en) * 1993-05-25 1994-11-30 Umwelt-Technics-Nord GmbH Method and device for separating volatile components from a material
WO1994029039A1 (en) * 1993-06-04 1994-12-22 Fresenius Umwelttechnik Gmbh Device and process for cleansing polluted ground
US5406747A (en) * 1992-10-08 1995-04-18 Kiefl Kb Device for regeneration and sterilization of earth, sand or the like
DE19528708A1 (en) * 1995-08-04 1997-02-06 Buna Sow Leuna Olefinverb Gmbh Process for separating volatile constituents from solid mixtures, in particular from rubble, soil material and sludge
NL1006990C2 (en) * 1997-09-10 1999-03-11 Recycling Nederland K W S D B Device for removing one or more contaminants from a bulk material.
CN111408614A (en) * 2020-04-14 2020-07-14 浙江大学 Screw type indirect thermal desorption device for organic contaminated soil remediation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921591A1 (en) * 1989-06-30 1991-01-03 Weiss Gmbh & Co Leonhard METHOD AND DEVICE FOR REMOVING VOLATILE POLLUTANTS FROM EARTH SOILS
WO1992018214A2 (en) * 1991-04-10 1992-10-29 Remediation Technologies, Inc. System and method for removing a volatile component from a matrix
WO1992018214A3 (en) * 1991-04-10 1993-01-21 Remediation Technologies Inc System and method for removing a volatile component from a matrix
US5216821A (en) * 1991-04-10 1993-06-08 Remediation Technologies, Incorporated System and method for removing a volatile component from a matrix
US5406747A (en) * 1992-10-08 1995-04-18 Kiefl Kb Device for regeneration and sterilization of earth, sand or the like
DE9213599U1 (en) * 1992-10-08 1993-01-28 Kiefl Kg, 8035 Gauting, De
EP0591625A1 (en) * 1992-10-08 1994-04-13 Kiefl Kg Device for the regeneration and sterilization of soil
EP0626215A1 (en) * 1993-05-25 1994-11-30 Umwelt-Technics-Nord GmbH Method and device for separating volatile components from a material
WO1994029039A1 (en) * 1993-06-04 1994-12-22 Fresenius Umwelttechnik Gmbh Device and process for cleansing polluted ground
DE19528708A1 (en) * 1995-08-04 1997-02-06 Buna Sow Leuna Olefinverb Gmbh Process for separating volatile constituents from solid mixtures, in particular from rubble, soil material and sludge
NL1006990C2 (en) * 1997-09-10 1999-03-11 Recycling Nederland K W S D B Device for removing one or more contaminants from a bulk material.
EP0901845A1 (en) * 1997-09-10 1999-03-17 Recycling Nederland K.W.S.D. B.V. Device for removing one or more pollutions from bulk material
CN111408614A (en) * 2020-04-14 2020-07-14 浙江大学 Screw type indirect thermal desorption device for organic contaminated soil remediation

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