Title

MODERNIZATION OF EXISTING COKE OVEN GAS TREATMENT PLANTS TO IMPROVE PLANT PERFORMANCE AND MEETING ENVIRONMENTAL REQUIREMENTS

MODERNIZATION OF EXISTING COKE OVEN GAS TREATMENT PLANTS TO IMPROVE PLANT PERFORMANCE AND MEETING ENVIRONMENTAL REQUIREMENTS

Authorship

Kern, Wolfgang; Bohmfalk, Hans Jörg; Dreis, Philipp; Júnior, Helênio Resende Silva

Kern, Wolfgang

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Bohmfalk, Hans Jörg

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Dreis, Philipp

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Júnior, Helênio Resende Silva

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DOI

10.5151/2594-357X-23831

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Abstract

In integrated steel mills coke oven batteries and coke oven gas treatment plants are in operation for decades. During the lifetime of operation the equipment of the coke oven gas treatment plant is subject to significant wear and tear. Furthermore the requirement regarding clean coke oven gas quality has increased by the downstream process in the steel mill as well as from environmental authorities. Due to the high capital investment cost of new coke oven gas treatment plants it is economic and worthwhile to investigate in modernization and upgrade of existing processes and equipment of an existing coke oven gas treatment plant to meet the new demand. Such modernization and revamping work has been carried out by DMT at many coke oven gas treatment plants around the world. In this paper we will highlight the steps involved in the process from an initial study or change in mode of operation of the plant up to the stepwise implementation of modernization projects. DMT will demonstrate on practical examples e.g. design of tar decanting system or revamping of sulphuric acid and ammonium sulphate plants up to the upgrading of desulphurization processes (Claus process). This paper focuses on: i) steps required starting and implementing the modernization of a coke oven gas treatment plant considering plant requirements and environmental regulations, with an overview on process technologies available; ii) examples of technical solutions for upgrading of coke oven gas treatment plants.

In integrated steel mills coke oven batteries and coke oven gas treatment plants are in operation for decades. During the lifetime of operation the equipment of the coke oven gas treatment plant is subject to significant wear and tear. Furthermore the requirement regarding clean coke oven gas quality has increased by the downstream process in the steel mill as well as from environmental authorities. Due to the high capital investment cost of new coke oven gas treatment plants it is economic and worthwhile to investigate in modernization and upgrade of existing processes and equipment of an existing coke oven gas treatment plant to meet the new demand. Such modernization and revamping work has been carried out by DMT at many coke oven gas treatment plants around the world. In this paper we will highlight the steps involved in the process from an initial study or change in mode of operation of the plant up to the stepwise implementation of modernization projects. DMT will demonstrate on practical examples e.g. design of tar decanting system or revamping of sulphuric acid and ammonium sulphate plants up to the upgrading of desulphurization processes (Claus process). This paper focuses on: i) steps required starting and implementing the modernization of a coke oven gas treatment plant considering plant requirements and environmental regulations, with an overview on process technologies available; ii) examples of technical solutions for upgrading of coke oven gas treatment plants.

Keywords

By-product plant; Modernization; Revamping; Practical examples.

By-product plant; Modernization; Revamping; Practical examples.