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WO1996036420A1 - Process and apparatus for handling carbon-containing adsorbent - Google Patents

Process and apparatus for handling carbon-containing adsorbent Download PDF

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Publication number
WO1996036420A1
WO1996036420A1 PCT/EP1995/004436 EP9504436W WO9636420A1 WO 1996036420 A1 WO1996036420 A1 WO 1996036420A1 EP 9504436 W EP9504436 W EP 9504436W WO 9636420 A1 WO9636420 A1 WO 9636420A1
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WO
WIPO (PCT)
Prior art keywords
adsorbent
desorption
reactor
layer
upstream
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
Application number
PCT/EP1995/004436
Other languages
German (de)
French (fr)
Inventor
Hermann BRÜGGENDICK
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.)
Steag GmbH
Original Assignee
Steag GmbH
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Filing date
Publication date
Application filed by Steag GmbH filed Critical Steag GmbH
Priority to CA002215471A priority Critical patent/CA2215471C/en
Priority to JP08534478A priority patent/JP3083566B2/en
Priority to TW084112532A priority patent/TW299246B/zh
Publication of WO1996036420A1 publication Critical patent/WO1996036420A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B01D53/08—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds according to the "moving bed" method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/60—Heavy metals or heavy metal compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Definitions

  • the invention relates to a method and a device for treating carbon-containing adsorbent, which passes through a reactor of a flue gas cleaning system, a desorption treatment being carried out and the desorption gas formed thereby being subjected to heavy metal separation .
  • the invention is therefore based on the object of making the treatment more economical and simpler in terms of apparatus without reducing the quality of treatment.
  • the process according to the invention is characterized in that the carbonaceous adsorbent is passed through the reactor in an upstream and at least one outflow layer and that the adsorbent of the upstream layer is discharged separately from the reactor and is subjected to the desorption treatment alone.
  • the invention is based on the knowledge that, due to the high reaction rate, the heavy metals practically predominantly settle in the upstream layer of the adsorbent. Accordingly, the invention creates the possibility of discharging this upstream adsorbent layer separately and subjecting it to the desorption treatment alone. This is therefore only applied to a fraction of the total adsorbent. The energy expenditure for heating is correspondingly lower. The size of the treatment device is also reduced considerably. This leads to a small footprint and a reduction in investment costs.
  • ATZBL ⁇ TT RULE26 Oven coke is preferably used as the carbon-containing adsorbent, it being particularly advantageous to add the adsorbent to the upstream layer after the desorption treatment and to burn it together with the other adsorbent.
  • the desorption gas is preferably also burned together with the adsorbent.
  • the invention further relates to an arrangement for carrying out the method according to the invention, this arrangement comprising a flue gas cleaning reactor, an adsorbent discharge device for the reactor, a desorption device downstream of the discharge device with desorption gas outlet and adsorbent outlet, and a connection to the desorption gas outlet.
  • NEN heavy metal separator includes.
  • the system is characterized in that the reactor has at least one partition for dividing an upstream adsorbent layer, that the discharge device has a main department and a secondary department assigned to the upstream adsorbent layer, and that only the secondary department to the Desorption device is connected.
  • the adsorbent outlet of the desorption device be connected to the outlet of the main department of the discharge device and be connected together with the latter to a combustion device.
  • the gas outlet of the desorption device is preferably also connected to the combustion device.
  • REPLACEMENT BLA ⁇ (RULE 26) be laid and gets by with a low-performance heating.
  • the arrangement has a reactor 1 which is provided for flue gas cleaning.
  • a reactor 1 which is provided for flue gas cleaning.
  • it contains a bed made of carbon-containing adsorbent 2, which is a fixed bed or a moving bed.
  • the adsorbent is removed from the reactor 1 via a discharge device 3.
  • a partition 4 is arranged in the interior of the reactor 1, which divides an upstream layer 5 of adsorbent 2.
  • a secondary department 6 of the discharge device 3 is assigned to this layer 5.
  • the remaining adsorbent 2 leaves the reactor 1 through a main section 7 of the discharge device 3.
  • the secondary section 6 of the discharge device 3 is connected to a desorption device 8. This is where the pollutants absorbed in the reactor 1 are desorbed. It has been found that the major proportion of the pollutants is deposited in the upstream layer 5 of the adsorbent 2 and that it is sufficient to subject this material to the desorption treatment 8 in order to achieve satisfactory cleaning results.
  • Desorption device 8 therefore only has to treat a small proportion of the adsorbent 2 and can accordingly be of small dimensions. It also only requires a low heating output.
  • the desorption device 8 has a desorption gas outlet 9 which is connected to a heavy metal separator 10
  • the desorption device 8 also has an adsorbent outlet 11 which is coupled to the main section 7 of the discharge device 3 and is connected together with the latter to a combustion device (not shown).
  • the carbon-containing adsorbent 2, which is hearth furnace coke, is thus completely burned, together with the desorption gas, since the heavy metal separator 10 is also connected to the combustion device.
  • the reactor 1 thus contains a total of 3 layers of the adsorbent 2. If appropriate, 2 layers are sufficient. However, a large number of layers can also be considered. Each of the layers can have its own department of
  • Discharge device 3 are available.
  • the upstream layer 5 is shown relatively narrow. If necessary, it can be much thicker or even narrower.
  • all layers are charged with relatively cheap hearth furnace coke, in which regeneration for a renewed use is hardly worthwhile. Deviating from this, other adsorbents can also be used.
  • the individual layers can be charged with different adsorbents. part of a regeneration treatment can be supplied.
  • the combustion device whose flue gas is treated is preferably used as the combustion device. It can
  • SPARE BLADE is a power plant, a waste incineration plant or the like.
  • the invention can be used wherever heavy metal contaminants have to be separated.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Gas Separation By Absorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Chimneys And Flues (AREA)

Abstract

The adsorbent (2) is led through a reactor (1) of a flue gas scrubbing system and a partition (4) separates off a layer (5) on the incident side. Only the adsorbent of that layer reaches a desorption device (8) whose desorption gas is fed into a heavy metal separator (10). Immediately after the desorption treatment, the adsorbent of the layer (5) is combined with the remaining adsorbent and burned. The desorption gas is also burned following the separation of the heavy metals.

Description

Verfahren und Anordnung zum Behandeln von kohlen¬ stoffhaltigem Adsorptionsmittel Die Erfindung betrifft ein Verfahren und eine Vorrich¬ tung zum Behandeln von kohlenstoffhaltigem Adsorptionsmit¬ tel, das einen Reaktor einer Rauchgasreinigungsanlage durchläuft, wobei eine Desorptionsbehandlung durchgeführt und das dabei entstehende Desorptionsgas einer Schwerme- tallabscheidung unterworfen wird. The invention relates to a method and a device for treating carbon-containing adsorbent, which passes through a reactor of a flue gas cleaning system, a desorption treatment being carried out and the desorption gas formed thereby being subjected to heavy metal separation .

Ein derartiges Verfahren ist aus der DE-PS 40 26 071 bekannt. Dabei wird das gesamte aus dem Reaktor kommende Adsorptionsmittel der Desorption unterworfen. Da die Desorptionsbehandlung eine Beheizung voraussetzt, ist das Verfahren entsprechend aufwendig. Auch müssen die appara¬ tiven Voraussetzungen für die Bewältigung der hohen Durch¬ sätze getroffen werden.Such a method is known from DE-PS 40 26 071. The entire adsorbent coming from the reactor is subjected to desorption. Since the desorption treatment requires heating, the process is correspondingly complex. The apparatus requirements for coping with the high throughputs must also be met.

Der Erfindung liegt daher die Aufgabe zugrunde, die Be- handlung ohne Verminderung der Behandlungsqualität wirt¬ schaftlicher und apparativ einfacher zu gestalten.The invention is therefore based on the object of making the treatment more economical and simpler in terms of apparatus without reducing the quality of treatment.

Zur Lösung dieser Aufgabe ist das Verfahren nach der Erfindung dadurch gekennzeichnet, daß das kohlenstoffhal¬ tige Adsorptionsmittel in einer anströmseitigen und minde- stens einer abströmseitigen Schicht durch den Reaktor ge¬ führt wird und daß das Adsorptionsmittel der anströmseiti¬ gen Schicht gesondert aus dem Reaktor ausgetragen und al¬ lein der Desorptionsbehandlung unterworfen wird.To achieve this object, the process according to the invention is characterized in that the carbonaceous adsorbent is passed through the reactor in an upstream and at least one outflow layer and that the adsorbent of the upstream layer is discharged separately from the reactor and is subjected to the desorption treatment alone.

Der Erfindung liegt die Erkenntnis zugrunde, daß sich die Schwermetalle aufgrund hoher Reaktionsgeschwindigkeit praktisch vorwiegend in der anströmseitigen Schicht des Ad¬ sorptionsmittels absetzen. Dementsprechend schafft die Er¬ findung die Möglichkeit, diese anströmseitige Adsorptions¬ mittelschicht gesondert auszutragen und allein der Desorp- tionsbehandlung zu unterwerfen. Diese wird also nur auf einen Bruchteil des gesamten Adsorptionsmittel angewendet. Entsprechend geringer ist der energetische Aufwand für die Beheizung. Auch vermindert sich die Größe der Behandlungs¬ einrichtung ganz beträchtlich. Dies führt zu geringem Platzaufwand und zu einer Senkung der Anlagekosten.The invention is based on the knowledge that, due to the high reaction rate, the heavy metals practically predominantly settle in the upstream layer of the adsorbent. Accordingly, the invention creates the possibility of discharging this upstream adsorbent layer separately and subjecting it to the desorption treatment alone. This is therefore only applied to a fraction of the total adsorbent. The energy expenditure for heating is correspondingly lower. The size of the treatment device is also reduced considerably. This leads to a small footprint and a reduction in investment costs.

ATZBLÄTT REGEL26) Als kohlenstoffhaltiges Adsorptionsmittel wird vorzugs¬ weise Herdofenkoks verwendet, wobei es besonders vorteil¬ haft ist, das Adsorptionsmittel der anströmseitigen Schicht nach der Desorptionsbehandlung dem übrigen Adsorptions it- tel zuzuführen und gemeinsam mit diesem zu verbrennen.ATZBLÄTT RULE26) Oven coke is preferably used as the carbon-containing adsorbent, it being particularly advantageous to add the adsorbent to the upstream layer after the desorption treatment and to burn it together with the other adsorbent.

Vorzugsweise wird auch das Desorptionsgas gemeinsam mit dem Adsorptionsmittel verbrannt.The desorption gas is preferably also burned together with the adsorbent.

Die Erfindung richtet sich ferner auf eine Anordnung zum Durchführen des erfindungsgemäßen Verfahrens, wobei diese Anordnung einen Rauchgasreinigungsreaktor, eine Ad¬ sorptionsmittel-Austragseinrichtung für den Reaktor, eine der Austragseinrichtung nachgeschaltete Desorptionsein- richtung mit Desorptionsgasauslaß und Adsorptionsmitte¬ lauslaß und einen an den Desorptionsgasauslaß angeschlosse- nen Schwermetallabscheider umfaßt. Die Anlage ist zur Lö¬ sung der erfindungsgemäßen Aufgabe dadurch gekennzeichnet, daß der Reaktor mindestens eine Trennwand zum Abteilen ei¬ ner anströmseitigen Adsorptionsmittelschicht aufweist, daß die Austragseinrichtung eine Hauptabteilung und eine der anströmseitigen Adsorptionsmittelschicht zugeordnete Ne¬ benabteilung aufweist und daß allein die Nebenabteilung an die Desorptionseinrichtung angeschlossen ist.The invention further relates to an arrangement for carrying out the method according to the invention, this arrangement comprising a flue gas cleaning reactor, an adsorbent discharge device for the reactor, a desorption device downstream of the discharge device with desorption gas outlet and adsorbent outlet, and a connection to the desorption gas outlet. NEN heavy metal separator includes. To achieve the object according to the invention, the system is characterized in that the reactor has at least one partition for dividing an upstream adsorbent layer, that the discharge device has a main department and a secondary department assigned to the upstream adsorbent layer, and that only the secondary department to the Desorption device is connected.

In Weiterbildung der Erfindung wird vorgeschlagen, daß der Adsorptionsmittelauslaß der Desorptionseinrichtung mit dem Auslaß der Hauptabteilung der Austragseinrichtung zu¬ sammengeschaltet und gemeinsam mit diesem an eine Verbren¬ nungseinrichtung angeschlossen ist.In a further development of the invention, it is proposed that the adsorbent outlet of the desorption device be connected to the outlet of the main department of the discharge device and be connected together with the latter to a combustion device.

Dabei ist vorzugsweise auch der Gasauslaß der Desorpti¬ onseinrichtung an die Verbrennungseinrichtung angeschlos- sen.The gas outlet of the desorption device is preferably also connected to the combustion device.

Zwar stellt die Trennwand im Rauchgasreinigungsreaktor einen zusätzlichen baulichen Aufwand dar, jedoch wird die¬ ser mehr als kompensiert durch die Vereinfachung, die sich im Zusammenhang mit der Desorptionseinrichtung ergibt. Diese kann klein und dementsprechend kostengünstig ausge-Although the partition in the flue gas cleaning reactor represents an additional structural effort, this is more than compensated for by the simplification that results in connection with the desorption device. This can be small and accordingly inexpensive.

ERSATZBLAπ(REGEL26) legt werden und kommt mit einer leistungsschwachen Heizung aus.REPLACEMENT BLAπ (RULE 26) be laid and gets by with a low-performance heating.

Als erfindungswesentlich offenbart gelten auch solche Kombinationen und Unterkombinationen, die von den beilie- genden Ansprüchen abweichen.Combinations and sub-combinations which differ from the appended claims are also considered to be disclosed as essential to the invention.

Die Erfindung wird im folgenden anhand eines bevorzug¬ ten Ausführungsbeispiels im Zusammenhang mit der beiliegen¬ den Zeichnung näher erläutert. Die einzige Figur zeigt das Fließschema einer Anordnung zur Durchführung des erfin- dungsgemäßen Verfahrens.The invention is explained in more detail below on the basis of a preferred exemplary embodiment in conjunction with the accompanying drawing. The single figure shows the flow diagram of an arrangement for carrying out the method according to the invention.

Die Anordnung weist einen Reaktor 1 auf, der zur Rauch¬ gasreinigung vorgesehen ist. Hierzu enthält er ein Bett aus kohlenstoffhaltigem Adsorptionsmittel 2, bei dem es sich um ein Festbett oder ein Wanderbett handelt. Das Ad- sorptionsmittel wir über eine Austragseinrichtung 3 dem Re¬ aktor 1 entnommen.The arrangement has a reactor 1 which is provided for flue gas cleaning. For this purpose, it contains a bed made of carbon-containing adsorbent 2, which is a fixed bed or a moving bed. The adsorbent is removed from the reactor 1 via a discharge device 3.

Anströmseitig ist im Inneren des Reaktors 1 eine Trenn¬ wand 4 angeordnet, die eine anströmseitige Schicht 5 aus Adsorptionsmittel 2 abteilt. Dieser Schicht 5 ist eine Ne- benabteilung 6 der Austragseinrichtung 3 zugeordnet. Das übrige Adsorptionsmittel 2 verläßt den Reaktor 1 durch eine Hauptabteilung 7 der Austragseinrichtung 3.On the upstream side, a partition 4 is arranged in the interior of the reactor 1, which divides an upstream layer 5 of adsorbent 2. A secondary department 6 of the discharge device 3 is assigned to this layer 5. The remaining adsorbent 2 leaves the reactor 1 through a main section 7 of the discharge device 3.

Die Nebenabteilung 6 der Austragseinrichtung 3 ist an eine Desorptionseinrichtung 8 angeschlossen. Hier erfolgt die Desorption der im Reaktor 1 absorbierten Schadstoffe. Es wurde gefunden, daß der wesentliche Anteil der Schad¬ stoffe in der anströmseitigen Schicht 5 des Adsorptions¬ mittels 2 angelagert wird und daß es ausreicht, dieses Ma¬ terial der Desorptionsbehandlung 8 zu unterwerfen, um zu- friedenstellende Reinigungsergebnisse zu erzielen. DieThe secondary section 6 of the discharge device 3 is connected to a desorption device 8. This is where the pollutants absorbed in the reactor 1 are desorbed. It has been found that the major proportion of the pollutants is deposited in the upstream layer 5 of the adsorbent 2 and that it is sufficient to subject this material to the desorption treatment 8 in order to achieve satisfactory cleaning results. The

Desorptionseinrichtung 8 muß also nur einen geringen Anteil des Adsorptionsmittels 2 behandeln und kann dementsprechend klein dimensioniert sein. Auch benötigt sie nur eine gerin¬ ge Heizleistung. Die Desorptionseinrichtung 8 weist einen Desorptions¬ gasauslaß 9 auf, der an einen Schwermetallabscheider 10Desorption device 8 therefore only has to treat a small proportion of the adsorbent 2 and can accordingly be of small dimensions. It also only requires a low heating output. The desorption device 8 has a desorption gas outlet 9 which is connected to a heavy metal separator 10

ERSATZBLÄTT(REGEL26) angeschlossen ist. Da sich praktisch die gesamten Schwerme- tallverunreinigungen in der anströmseitigen Schicht 5 des Adsorptionsmittels 2 befinden, erfolgt diesbezüglich im Schwermetallabscheider 10 eine praktisch vollständige Rei- nigung.SPARE BLADE (RULE 26) connected. Since practically all of the heavy metal impurities are located in the upstream layer 5 of the adsorbent 2, the heavy metal separator 10 carries out virtually complete cleaning in this regard.

Die Desorptionseinrichtung 8 weist ferner einen Adsorp¬ tionsmittelauslaß 11 auf, der mit der Hauptabteilung 7 der Austragseinrichtung 3 gekoppelt und gemeinsam mit dieser an eine nicht dargestellte Verbrennungseinrichtung ange- schlössen ist. Das kohlenstoffhaltige Adsorptionsmittel 2, bei dem es sich um Herdofenkoks handelt, wird also komplett verbrannt, und zwar gemeinsam mit dem Desorptionsgas, da der Schwermetallabscheider 10 ebenfalls an die Verbren¬ nungseinrichtung angeschlossen ist. Im Rahmen der Erfindung sind durchaus Abwandlungsmög¬ lichkeiten gegeben. So enthält der Reaktor 1 im Falle des vorliegenden Ausführungsbeispiels insgesamt 3 Schichten des Adsorptionsmittels 2. Gegebenenfalls genügen 2 Schichten. Es kann jedoch auch eine Vielzahl von Schichten in Frage kommen. Jeder der Schichten kann eine eigene Abteilung derThe desorption device 8 also has an adsorbent outlet 11 which is coupled to the main section 7 of the discharge device 3 and is connected together with the latter to a combustion device (not shown). The carbon-containing adsorbent 2, which is hearth furnace coke, is thus completely burned, together with the desorption gas, since the heavy metal separator 10 is also connected to the combustion device. Modifications are quite possible within the scope of the invention. In the case of the present exemplary embodiment, the reactor 1 thus contains a total of 3 layers of the adsorbent 2. If appropriate, 2 layers are sufficient. However, a large number of layers can also be considered. Each of the layers can have its own department of

Austragseinrichtung 3 zur Verfügung stehen. Die anströmseitige Schicht 5 ist relativ schmal dargestellt. Sie kann bei Bedarf wesentlich dicker oder aber noch schmaler sein. Im Falle des Ausführungsbeispiels werden sämtliche Schichten mit relativ billigem Herdofenkoks be¬ schickt, bei dem sich eine Regenerierung für einen erneuten Einsatz kaum lohnt. Abweichend hiervon sind auch andere Adsorptionsmittel einsetzbar. Insbesondere können die ein¬ zelnen Schichten mit unterschiedlichen Adsorptionsmitteln beschickt werden, wobei u.U. ein Teil einer Regenerie¬ rungsbehandlung zugeführt werden kann. Vorteilhaft ist al¬ lerdings die Verwendung des billigen Herdofenkokses in der anströmseitigen und in der nächstfolgenden Schicht mit an¬ schließender gemeinsamer Verbrennung. Als Verbrennungseinrichtung dient vorzugsweise dieje¬ nige Feuerung, deren Rauchgas behandelt wird. Dabei kann esDischarge device 3 are available. The upstream layer 5 is shown relatively narrow. If necessary, it can be much thicker or even narrower. In the case of the exemplary embodiment, all layers are charged with relatively cheap hearth furnace coke, in which regeneration for a renewed use is hardly worthwhile. Deviating from this, other adsorbents can also be used. In particular, the individual layers can be charged with different adsorbents. part of a regeneration treatment can be supplied. However, it is advantageous to use the cheap hearth furnace coke in the upstream and in the next layer with subsequent common combustion. The combustion device whose flue gas is treated is preferably used as the combustion device. It can

ERSATZBLÄTT(REGEL26) sich um ein Kraftwerk, eine Müllverbrennungsanlage oder dergleichen handeln. Die Erfindung ist überall dort ein- setzbar, wo Schwermetallverunreinigungen abgeschieden wer¬ den müssen.SPARE BLADE (RULE 26) is a power plant, a waste incineration plant or the like. The invention can be used wherever heavy metal contaminants have to be separated.

ERSATZBLÄrT(REGEL26) SPARE BLÄRT (REGEL26)

Claims

Patentansprüche claims 1. Verfahren zum Behandeln von kohlenstoffhaltigem Adsorp¬ tionsmittel, das einen Reaktor einer Rauchgasreinigungsanlage durchläuft, wobei eine Desorptionsbehandlung durchgeführt und das dabei entstehende Desorptionsgas einer Schwermetallabschei- dung unterworfen wird, dadurch gekennzeichnet, daß das kohlen¬ stoffhaltige Adsorptionsmittel in einer anströmseitigen und mindestens einer abströmseitigen Schicht durch den Reaktor ge¬ führt wird und daß das Adsorptionsmittel der anströmseitigen Schicht gesondert aus dem Reaktor ausgetragen und allein der Desorptionsbehandlung unterworfen wird.1. A method for treating carbon-containing adsorbent, which passes through a reactor of a flue gas cleaning system, wherein a desorption treatment is carried out and the desorption gas formed is subjected to heavy metal separation, characterized in that the carbonaceous adsorbent is present in one upstream and at least one outflow side Layer is passed through the reactor and that the adsorbent of the upstream layer is discharged separately from the reactor and is only subjected to the desorption treatment. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Adsorptionsmittel der anströmseitigen Schicht nach der Desorptionsbehandlung dem übrigen Adsorptionsmittel zugeführt und gemeinsam mit diesem verbrannt wird.2. The method according to claim 1, characterized in that the adsorbent of the upstream layer after the desorption treatment is fed to the rest of the adsorbent and burned together with it. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß das Desorptionsgas gemeinsam mit dem Adsorptionsmittel verbrannt wird.3. The method according to claim 1 or 2, characterized gekennzeich¬ net that the desorption gas is burned together with the adsorbent. 4. Anordnung zum Durchführen des Verfahrens nach einem der Ansprüche 1 bis 3, mit einem Rauchgasreinigungsreaktor (1), ei¬ ner Adsorptionsmittel-Austragseinrichtung (3) für den Reaktor, einer der Austragseinrichtung nachgeschalteten Desorptionsein¬ richtung (8) mit Desorptionsgasauslaß (9) und Adsorptionsmitte¬ lauslaß (11) und mit einem an den Desorptionsgasauslaß (9) an¬ geschlossenen Schwermetallabscheider (10) , dadurch gekennzeich¬ net, daß der Reaktor (1) mindestens eine Trennwand (4) zum Ab¬ teilen einer anströmseitigen Adsorptionsmittelschicht (5) auf¬ weist, daß die Austragseinrichtung (3) eine Hauptabteilung (7) und eine der anströmseitigen Adsorptionsmittelschicht (5) zuge¬ ordnete Nebenabteilung (6) aufweist und daß allein die Nebenab- teilung (6) an die Desorptionseinrichtung (8) angeschlossen ist.4. Arrangement for performing the method according to one of claims 1 to 3, with a flue gas cleaning reactor (1), ei¬ ner adsorbent discharge device (3) for the reactor, a discharge device downstream of the desorption device (8) with desorption gas outlet (9) and adsorbent outlet (11) and with a heavy metal separator (10) connected to the desorption gas outlet (9), characterized in that the reactor (1) has at least one partition (4) for dividing an upstream adsorbent layer (5 ) has that the discharge device (3) has a main section (7) and a secondary section (6) assigned to the upstream adsorbent layer (5) and that only the secondary section division (6) is connected to the desorption device (8). 5. Anordnung nach Anspruch 4, dadurch gekennzeichnet, daß der Adsorptionsmittelauslaß (11) der Desorptionseinrichtung (8) mit dem Auslaß der Hauptabteilung (7) der Austragseinrichtung5. Arrangement according to claim 4, characterized in that the adsorbent outlet (11) of the desorption device (8) with the outlet of the main department (7) of the discharge device (3) zusammengeschaltet und gemeinsam mit diesem an eine Ver¬ brennungseinrichtung angeschlossen ist.(3) interconnected and connected together with this to a combustion device. 6. Anordnung nach Anspruch 4 oder 5, dadurch gekennzeich¬ net, daß der Schwermetallabscheider (10) an die Verbrennungs- einrichtung angeschlossen ist. 6. Arrangement according to claim 4 or 5, characterized gekennzeich¬ net that the heavy metal separator (10) is connected to the combustion device.
PCT/EP1995/004436 1995-05-19 1995-11-11 Process and apparatus for handling carbon-containing adsorbent Ceased WO1996036420A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002215471A CA2215471C (en) 1995-05-19 1995-11-11 Process and apparatus for handling carbon-containing adsorbent
JP08534478A JP3083566B2 (en) 1995-05-19 1995-11-11 Method and apparatus for treating carbon-containing sorbents
TW084112532A TW299246B (en) 1995-05-19 1995-11-24

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518447A DE19518447A1 (en) 1994-11-18 1995-05-19 Heavy metal removal from adsorptive material in flue gas cleaner
DE19518447.5 1995-05-19

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CN106669359A (en) * 2017-02-27 2017-05-17 国电科学技术研究院 Adsorption device for combined movable bed

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NL2024499B1 (en) * 2019-12-18 2021-09-08 Wim En Wim B V Gas treatment device, combination of the gas treatment and a non-gas-fired incinerator, and method for treating gas contaminated with at least one contaminant

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WO1990007371A1 (en) * 1988-12-30 1990-07-12 Steag Aktiengesellschaft Process and device for separating undesirable constituents from waste gases
EP0411412A1 (en) * 1989-08-01 1991-02-06 Rheinbraun Aktiengesellschaft Process and apparatus for regenerating active carbon loaded with heavy metals
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WO1992006770A1 (en) * 1990-10-16 1992-04-30 Steag Aktiengesellschaft Adsorption agent reactor, especially fluidised bed reactor

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WO1990007371A1 (en) * 1988-12-30 1990-07-12 Steag Aktiengesellschaft Process and device for separating undesirable constituents from waste gases
EP0411412A1 (en) * 1989-08-01 1991-02-06 Rheinbraun Aktiengesellschaft Process and apparatus for regenerating active carbon loaded with heavy metals
DE4026071A1 (en) * 1990-08-17 1992-02-20 Steag Ag METHOD AND ARRANGEMENT FOR CLEANING CARBONATED ADSORPTION AGENT
WO1992006770A1 (en) * 1990-10-16 1992-04-30 Steag Aktiengesellschaft Adsorption agent reactor, especially fluidised bed reactor

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Publication number Priority date Publication date Assignee Title
CN106669359A (en) * 2017-02-27 2017-05-17 国电科学技术研究院 Adsorption device for combined movable bed
CN106669359B (en) * 2017-02-27 2022-08-02 国电科学技术研究院有限公司 Combined moving bed adsorption device

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JPH10506574A (en) 1998-06-30
CA2215471C (en) 2001-02-06
CA2215471A1 (en) 1996-11-21
TW299246B (en) 1997-03-01
DE19518447A1 (en) 1996-05-23

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