DE4027152A1 - Degassing scrap tyres or plastics etc. - by processing with ribbon type extruder screw to produce successive temp. zones and yield separate pure fractions and condensates - Google Patents
Degassing scrap tyres or plastics etc. - by processing with ribbon type extruder screw to produce successive temp. zones and yield separate pure fractions and condensatesInfo
- Publication number
- DE4027152A1 DE4027152A1 DE19904027152 DE4027152A DE4027152A1 DE 4027152 A1 DE4027152 A1 DE 4027152A1 DE 19904027152 DE19904027152 DE 19904027152 DE 4027152 A DE4027152 A DE 4027152A DE 4027152 A1 DE4027152 A1 DE 4027152A1
- Authority
- DE
- Germany
- Prior art keywords
- degassing
- temp
- zones
- stage
- condensates
- 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- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0496—Pyrolysing the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3425—Printed circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
Description
Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, welches durch die gesteuerte Tieftemperaturentgasung zerkleinerter, organischer Stoffe, vorzugsweise von Altreifen, Kunststoffen, Elektronikschrott sowie Biomassen auf die Gewinnung und Wiedergewinnung von Brenn- und Rohstoffen abgestellt ist.The object of the invention is to provide a method which by controlled low-temperature degassing shredded, organic substances, preferably used tires, Plastics, electronic waste and biomass on the extraction and recovery of fuel and raw materials is turned off.
Vom Stand der Technik her sind unzählige Verfahren bekannt, aber keines hat bisher das Problem des Altreifenanfalls, des Kunststoffabfalls oder des Elektronikschrotts sowie der Biomasse lösen können, obwohl in diesen Materialien große Mengen der verschiedensten Brenn- und Rohstoffe gebunden sind.Countless methods are known from the prior art, but none has the problem of old tire attack so far, plastic waste or electronic waste as well as the biomass, although in these materials large quantities of various types of burning and Raw materials are bound.
Gelöst wird diese Aufgabe durch Anspruch 1 sowie der Unteransprüche.This problem is solved by claim 1 and the Subclaims.
Die Aufgabe der Erfindung ist es, in den verschiedensten Temperaturbereichen bis ca. 600 Grad C große Mengen von Entgasungsprodukten in möglichst reiner Form zu enthalten. Erreicht wird dies durch die engen sich dauernd verändernden Räumlichkeiten in den sich langsam drehenden Schneckenzügen, wodurch schnell eine große Menge von Strahlungswärme, aber auch Kontaktwärme in das Entgasungsgut übertragen wird. Erfindungsgemäß wird statt einer Hohlschnecke, wie sie unter P 38 09 115 oder P 40 26 060 beschrieben ist, eine Hohlbandschnecke in Form der bekannten Bandschnecke gebildet. Es wurde gefunden, daß sie in der Herstellung einfacher ist und ganz andere Baugrößen zuläßt. Ein dritter Vorteil ist, daß in den Schneckenzügen meist nur die Teile beheizt werden, die zur Aufheizung des Materials notwendig sind.The object of the invention is in the most varied Temperature ranges up to approx. 600 degrees C in large quantities To contain degassing products in as pure a form as possible. This is achieved through the tight, constantly changing Premises in the slowly rotating snail trains, which quickly causes a large amount of radiant heat, but also transfer contact heat into the degassing material becomes. According to the invention, instead of a hollow screw, as described under P 38 09 115 or P 40 26 060 is a hollow band screw in the form of the known band screw educated. It was found that they are in the making is simpler and allows completely different sizes. A third The advantage is that in the snail trains usually only that Parts are heated that are necessary for heating the material are.
Die Stufe bis ca. 150 Grad C ist hauptsächlich der Trocknung sowie der Abspaltung hygroskopischer Wässer vorbehalten, denn es ist wichtig, so viel Wasser wie möglich aus dem Prozeß zu entfernen. Die nachfolgenden Stufen bieten den Vorteil, daß zunächst eine grobe Auftrennung des komplex zusammengesetzten, flüssigen Kondensats erfolgen kann und alle Fraktionen als Rohstoffe hochinteressant sind. Die Flüssigprodukte können bis zu 90% je nach Einsatzmaterial erreichen. Das Kondensat enthält vornehmlich u. a. aliphatische Kohlenwasserstoffe und Olefine, die in Prozessen zur Rückgewinnung von Ethylen und Propylen, aber auch von monomerem Styrol und anderen Chemierohstoffen führt. The stage up to approx. 150 degrees C is mainly drying as well as the splitting off of hygroscopic water, because it is important to have as much water as possible remove from the process. The subsequent stages offer the advantage that initially a rough separation of the complex liquid condensate can and all fractions as raw materials very interesting are. The liquid products can be up to 90% each reach by feed. The condensate contains primarily u. a. aliphatic hydrocarbons and Olefins used in ethylene recovery processes and propylene, but also monomeric styrene and others Chemical raw materials leads.
In einer der Gasreinigung nachgeschalteten Kühlung wird das restliche Produktgas auf ca. 5 Grad C abgekühlt, wobei eine hochwertige BTX-Fraktion auskondensiert.In a cooling system downstream of the gas cleaning system the remaining product gas cooled to about 5 degrees C, whereby a high-quality BTX fraction condensed out.
Die festen Rückstände fallen im wesentlichen, nachdem Metall (z. B. Teile der Stahlgürtelreifen) und andere inerte Materialien entfernt wurden, als kohlenstoffreiches, rieselfähiges, geruchloses Material an. Aufgrund ihres hohen Heizwertes besteht die Möglichkeit, sie als Brennstoff oder nach entsprechender Aufbereitung als Füll- oder Farbstoff in der chemischen oder Gummiindustrie einzusetzen.The solid residues essentially fall after Metal (e.g. parts of the steel belted tires) and others inert materials have been removed as carbon-rich, free-flowing, odorless material. Because of her high calorific value there is the possibility of using them as fuel or after appropriate preparation as a filling or dye in the chemical or rubber industry to use.
Der Ein- oder Austrag des Materials in und aus dem Hohlbandschneckenreaktor erfolgt über eine Schleuse, wie natürlich der gesamte Prozeß unter Luftabschluß abläuft. In weiterem hat sich herausgestellt, daß die Kondensationskühler am besten mit Luft betrieben werden, um vom Wasser unabhängig zu sein. Durch dieses Verfahren ist auch die Trocknung sowie Entgasung von Klärschlämmen sowie die Reinigung von Böden möglich.The entry or exit of the material in and out of the hollow belt screw reactor takes place via a lock, such as of course the whole process takes place in the absence of air. It has further been found that the Condensation coolers are best operated with air, to be independent of the water. Through this procedure is also the drying and degassing of sewage sludge as well as cleaning floors.
Bei Biomassen ist die Temperatur von 200 bis 250 Grad C die der Bertinisierung. Lufttrockene Biomassen mit ca. 18% Feuchte verlieren bis zur Hälfte ihres Gewichts, aber ihr Heizwert steigt von ca. 3000 bis 3500 kcal/kg auf 6500 bis 7000 kcal/kg an. Ab ca. 170 Grad C tritt ein Zerlegungsmechanismus ein, welcher die Makromoleküle Zellulose und Hemizellulose aufspaltet (Lignin zerfällt erst oberhalb 280 Grad C) und so eine starke Versprödung beiführt. Durch das Bertinisieren wird eine Homogenisierung aller eingesetzten Biomassen erreicht, welche sich nur noch durch ihren Aschegehalt unterscheiden. Nach einer Feinmahlung erhält man einen staubförmigen Primärbrennstoff, der CO₂-neutral ist.For biomass the temperature is from 200 to 250 degrees Celsius that of Bertinization. Air-dry biomass with approx. 18% moisture lose up to half their weight, but their calorific value rises from approx. 3000 to 3500 kcal / kg to 6500 to 7000 kcal / kg. From about 170 degrees C. a disassembly mechanism that the macromolecules Splits cellulose and hemicellulose (lignin disintegrates only above 280 degrees C) and so a strong embrittlement introduced. Bertinizing becomes homogenization of all biomass used, which is differ only by their ash content. After a Fine grinding gives a dusty primary fuel, is CO₂ neutral.
Claims (5)
- - in einem ein- oder mehrstufigen Hohlbandschneckenreaktor, bei dem die einzelnen Stufen übereinander angeordnet und dieselben untereinander durch Schleusen getrennt sein können, in einem oder mehreren Kreisläufen Wärmeträger zirkulieren, die im Trocknungs- und Entgasungsgut getrennt verschiedene Temperaturbereiche zulassen und somit die Entgasungsprodukte von jeder Stufe getrennt abgezogen werden können,
- - es sich um Einzel- als auch um Doppelhohlbandschnecken handeln kann, die in oben verschlossenen Doppelmanteltrögen gelagert sind.
- - In a single-stage or multi-stage hollow belt screw reactor, in which the individual stages can be arranged one above the other and separated from one another by locks, circulate heat transfer media in one or more circuits, which allow different temperature ranges in the material to be dried and degassed, and thus the degassing products from each stage can be deducted separately
- - It can be single as well as double hollow-band screws, which are stored in double-jacket troughs sealed at the top.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904027152 DE4027152A1 (en) | 1990-08-28 | 1990-08-28 | Degassing scrap tyres or plastics etc. - by processing with ribbon type extruder screw to produce successive temp. zones and yield separate pure fractions and condensates |
DE19904034985 DE4034985A1 (en) | 1990-08-28 | 1990-11-03 | Controlled low-temp. degasification of organic materials - in a ribbon reactor with separate screw stages electrically heated to different temps., e.g. 150, 350 and 700 deg c |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19904027152 DE4027152A1 (en) | 1990-08-28 | 1990-08-28 | Degassing scrap tyres or plastics etc. - by processing with ribbon type extruder screw to produce successive temp. zones and yield separate pure fractions and condensates |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4027152A1 true DE4027152A1 (en) | 1992-03-05 |
Family
ID=6413062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19904027152 Withdrawn DE4027152A1 (en) | 1990-08-28 | 1990-08-28 | Degassing scrap tyres or plastics etc. - by processing with ribbon type extruder screw to produce successive temp. zones and yield separate pure fractions and condensates |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4027152A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011005065A1 (en) * | 2011-03-03 | 2012-09-06 | Siemens Aktiengesellschaft | Thermal treatment of biomass, comprises e.g. indirect drying of biomass, obtaining heating steam by compressing dried steam vapor escaping from biomass, supplying heating steam in heating tube of drying apparatus and condensing |
-
1990
- 1990-08-28 DE DE19904027152 patent/DE4027152A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011005065A1 (en) * | 2011-03-03 | 2012-09-06 | Siemens Aktiengesellschaft | Thermal treatment of biomass, comprises e.g. indirect drying of biomass, obtaining heating steam by compressing dried steam vapor escaping from biomass, supplying heating steam in heating tube of drying apparatus and condensing |
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