DE1767108C3 - Process for the destruction of the ammonia from the water produced in the coking plant - Google Patents

Process for the destruction of the ammonia from the water produced in the coking plant

Info

Publication number
DE1767108C3
DE1767108C3 DE19681767108 DE1767108A DE1767108C3 DE 1767108 C3 DE1767108 C3 DE 1767108C3 DE 19681767108 DE19681767108 DE 19681767108 DE 1767108 A DE1767108 A DE 1767108A DE 1767108 C3 DE1767108 C3 DE 1767108C3
Authority
DE
Germany
Prior art keywords
ammonia
lean gas
water
temperature
gas
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.)
Expired
Application number
DE19681767108
Other languages
German (de)
Other versions
DE1767108B2 (en
DE1767108A1 (en
Inventor
Karlheinz Dipl.-Ing. 6621 Differten Flasche
Siegfried Dipl.-Ing. Pfeiff
Hermann Dr.-Ing. 6622 Schaffhausen Siewers
Alfred Dr.Rer. Nat. Stetter
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.)
Stahlwerke Roechling - Burbach 6620 Voelklingen GmbH
Original Assignee
Stahlwerke Roechling - Burbach 6620 Voelklingen 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 Stahlwerke Roechling - Burbach 6620 Voelklingen GmbH filed Critical Stahlwerke Roechling - Burbach 6620 Voelklingen GmbH
Priority to DE19681767108 priority Critical patent/DE1767108C3/en
Publication of DE1767108A1 publication Critical patent/DE1767108A1/en
Publication of DE1767108B2 publication Critical patent/DE1767108B2/en
Application granted granted Critical
Publication of DE1767108C3 publication Critical patent/DE1767108C3/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen

Description

Das Hauptpatent 16 42 416 betrifft ein Verfahren zum Vernichten des Ammoniaks aus den in der Kokerei anfallenden Wässern, bei denen das Ammoniak mit Gas aus dem Wasser ausgetrieben wird, wobei das aufzuarbeitende Wasser mit Schwachgas bei einer solchen Temperatur behandelt wird, daß das Wasser nach dem Behandeln eine Temperatur von mindestens 60° C hat und daß das Ammoniak enthaltende Schwachgas den Regeneratoren von Industrieöfen zugeführt und darin auf eine solche Temperatur erhitzt wird, daß das Ammoniak in an sich bekannter Weise in Stickstoff und Wasserstoff dissoziiert.The main patent 16 42 416 relates to a method for destroying the ammonia from the in the coking plant accumulating waters, in which the ammonia is expelled from the water with gas, whereby the The water to be processed is treated with lean gas at a temperature such that the water after the treatment has a temperature of at least 60 ° C and that the ammonia-containing Lean gas fed to the regenerators of industrial furnaces and heated to such a temperature therein is that the ammonia dissociates into nitrogen and hydrogen in a manner known per se.

Die weitere Ausbildung des Gegenstandes des Hauptpatentes ist darin zu sehen, daß man das aufzuarbeitende Wasser in zwei hintereinander geschalteten Stufen mit Schwachgas behandelt, wobei man einen größeren Teilstrom des Schwachgases einer ersten Stufe und einen kleineren Teilstrom, des Schwachgases, der eine wesentlich höhere Temperatur als der größere Teilstrom hat, einer zweiten Stufe zuführtThe further development of the subject matter of the main patent can be seen in the fact that the The water to be worked up is treated with lean gas in two successive stages, whereby one a larger partial flow of the lean gas of a first stage and a smaller partial flow, des Lean gas, which has a significantly higher temperature than the larger partial flow, of a second stage feeds

Durch diese Maßnahmen wird erreicht daß der Gehalt an Ammoniak in dem behandelten Wasser η >ch weiter heruntergedrückt wird. Außerdem kann durch die erfindungsgemäße Maßnahme der Energieverbrauch beim Austreiben des Ammoniaks verhältnismäßig klein gehalten werden.These measures ensure that the ammonia content in the treated water η> ch is further depressed. In addition, the measure according to the invention can reduce the energy consumption be kept relatively small when driving out the ammonia.

Es hat sich weiterhin als sinnvoll erwiesen, das Ammoniak enthaltende Schwachgas zu erhitzen. Dadurcti wird eine Korrosion in den Gasleitungen zu denIt has also proven to be useful to heat the lean gas containing ammonia. Dadurcti will cause corrosion in the gas pipes to the

Regeneratoren vermieden.Avoided regenerators.

Bei extrem hohen Anforderungen an die Reinheit des ablaufenden Wassers kann es angebracht sein, dieses nach der erfindungsgemäßen Behandlung in einem Abwasserteich nachzubehandeln.In the case of extremely high demands on the purity of the runoff water, it may be appropriate to use this after the treatment according to the invention in one Post-treatment of wastewater pond.

Die Zeichnung verdeutlicht die Wirkungsweise des Verfahrens.The drawing shows how the process works.

Dem Wascher 1 wird das Rohwasser B und das Schwachgas A zugeführt Das mit Ammoniak beladene Schwachgas gelangt von dem Wascher 1 in den Regenerator 5, der z. B. Teil eines Koksofens ist. Dort wird es so stark erhitzt daß das Ammoniak in Stickstoff und Wasserstoff dissoziiert Die erhitzten Gase verlassen den Regenerator 5 und gelangen beispielsweise in die Heizzüge einer Koksbatterie. Das in dem Wascher 1 weitgehend von Ammoniak befreite Wasser wird einem Intensivwascher 2 zugeführt und dort mit Schwachgas höherer Temperatur behandelt. Dazu wird ein Teilstrom des Schwachgases abgezweigt und über einen Regler 7, sowie eine Heizeinrichtung 3, in der das Schwachgas z. B. auf etwa 400° C erhitzt wird, dem Intensivwascher 2 zugeführt Das den Intensivwascher 2 verlassende, Ammoniak enthaltende Schwachgas wird über einen Regler 8 dem Waschet 1 zugeführt Das aus dem Intensivwascher 2 ablaufende Wasser wird entweder in den Abwasserkanal geleitet oder, falls erforderlich, in einem Abwasserteich 6 nachbehandeltThe raw water B and the lean gas A are fed to the scrubber 1. The lean gas laden with ammonia passes from the scrubber 1 into the regenerator 5, the B. is part of a coke oven. There it is heated so much that the ammonia dissociates into nitrogen and hydrogen. The heated gases leave the regenerator 5 and get into the heating flues of a coke battery, for example. The water largely freed from ammonia in the washer 1 is fed to an intensive washer 2 and treated there with lean gas at a higher temperature. For this purpose, a partial flow of the lean gas is branched off and via a controller 7 and a heating device 3, in which the lean gas z. B. is heated to about 400 ° C, fed to the intensive washer 2 The ammonia-containing lean gas leaving the intensive washer 2 is fed to the washing set 1 via a regulator 8 The water draining from the intensive washer 2 is either directed into the sewer or, if necessary, aftertreated in a sewage pond 6

Um Korrosion in den Gasleitungen zwischen Wascher 1 und Regenerator 5 zu vermeiden, wird das mit Ammoniak beladene Schwachgas erwärmt. Dies geschieht durch einen hinter der Heizeinrichtung 3 abgezweigten Teilstrom des erwärmten Schwachgases. Das aufzuarbeitende Wasser wird zweckmäßigerweise in dem Wärmeaustauscher 4 durch das aus dem Intensivwascher 2 ablaufende Wasser vorgewärmt.In order to avoid corrosion in the gas lines between washer 1 and regenerator 5, this is warmed lean gas laden with ammonia. This is done by a device behind the heating device 3 branched off partial flow of the heated lean gas. The water to be worked up is expedient preheated in the heat exchanger 4 by the water draining from the intensive washer 2.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zum Vernichten des Ammoniaks aus den in der Kokerei anfallenden Wässern, bei denen das Ammoniak mit Gas aus dem Wasser ausgetrieben wird, wobei das aufzuarbeitende Wasser mit Schwachgas bei einer solchen Temperatur behandelt wird, daß das Wasser nach dem Behandeln eine Temperatur von mindestens 60° C hat, und daß das Ammoniak enthaltende Schwachgas den Regeneratoren von Industrieöfen zugeführt und darin auf eine solche Temperatur erhitzt wird, daß das Ammoniak in an sich bekannter Weise in Stickstoff und Wasserstoff dissoziiert, nach Patent 16 42416, dadurch gekennzeichnet, daß man das aufzuarbeitende Wasser in zwei hintereinandergeschalteten Stufen mit Schwachgas behandelt und dabei einen gröberen Teilstrom des Schwachgases einer ersten Stufe und einen kleineren Teiistrom des Schwachgases mit einer wesentlich höheren Temperatur als jener des größeren Teilstromes, einer zweiten Stufe zuführt1. Process for the destruction of ammonia from the water produced in the coking plant, in which the ammonia is expelled from the water with gas, with the water to be processed Lean gas is treated at such a temperature that the water after treatment a Has a temperature of at least 60 ° C, and that the ammonia-containing lean gas to the regenerators supplied by industrial furnaces and heated therein to such a temperature that the ammonia dissociated into nitrogen and hydrogen in a manner known per se, according to patent 16 42416, characterized in that the water to be worked up in two series-connected Stages treated with lean gas and thereby a coarser partial flow of the lean gas a first stage and a smaller partial flow of the lean gas at a significantly higher temperature than that of the larger partial flow, a second stage 2. Verfahren nach Anspruch I1 dadurch gekennzeichnet, daß man das Ammoniak enthaltende Schwachgas auf seinem Wege vom Wascher zum Regenerator durch Einleiten von heißem Schwachgas erhitzt2. The method according to claim I 1, characterized in that the ammonia-containing lean gas is heated on its way from the scrubber to the regenerator by introducing hot lean gas
DE19681767108 1968-04-02 1968-04-02 Process for the destruction of the ammonia from the water produced in the coking plant Expired DE1767108C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19681767108 DE1767108C3 (en) 1968-04-02 1968-04-02 Process for the destruction of the ammonia from the water produced in the coking plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681767108 DE1767108C3 (en) 1968-04-02 1968-04-02 Process for the destruction of the ammonia from the water produced in the coking plant

Publications (3)

Publication Number Publication Date
DE1767108A1 DE1767108A1 (en) 1972-03-16
DE1767108B2 DE1767108B2 (en) 1977-09-01
DE1767108C3 true DE1767108C3 (en) 1978-04-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681767108 Expired DE1767108C3 (en) 1968-04-02 1968-04-02 Process for the destruction of the ammonia from the water produced in the coking plant

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DE (1) DE1767108C3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006289A1 (en) 2013-04-12 2014-10-16 Thyssenkrupp Industrial Solutions Ag Process for the improved purification of waste water from a coke oven plant

Also Published As

Publication number Publication date
DE1767108B2 (en) 1977-09-01
DE1767108A1 (en) 1972-03-16

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8340 Patent of addition ceased/non-payment of fee of main patent