PRESS RELEASE
WORLD FIRST IN COKE OVEN GAS TREATMENT

Le Gaz Intégral has put into operation a plant for the treatment of gas containing ammonia and hydrogen sulphide in the coke oven plant located at FOS S/MER, France, of ARCELOR (SOLLAC USINOR), the largest steel producer of the world.

Using a novel and unique process, this unit first of its kind, recovers 12 tpd of sulphur in a molten form while ammonia is destroyed.

This unit reduces strongly the emissions of the coke oven plant with an efficiency much higher than conventional processes.

Le Gaz Integral (www.gazintegral.com) is an E and C company active in waste gas treatment and sulphur recovery units.

To learn more contact : F. ROSSATI - Tel + 33 1 41 20 92 92

 

NEW PROCESS for SULFUR RECOVERY in COKE PRODUCTION PLANTS.

It is now possible to treat residual gases of the desulfurization of coke oven gas without the need of a catalytic step to dissociate the ammonia of the gaz.
The process used allows to treat humid effluents containing ammonia with small concentrations in H2S, with very high efficiencies in recovering sulfur under liquid form.

Le Gaz Integral, specialist in desulfurization of gas effluents, offers a new type of modified Claus Unit working thermally without a catalytic ammonia destruction step in the furnace. Well-known in the field of refineries, this technique allows to recover pure sulphur and is adapted, in this case, to gases containing not only H2S and water, but very high content of ammonia that must be destroyed. In addition to this ammonia presence, this unit also has the particularity to treat flows that are not highly concentrated in H2S.


The reaction said of “Claus”, consisting in several reactions leading to convert H2S into sulphur, is here optimised. Thus, the combustion, first step in a Claus Unit, gives a high temperature that not only enables the destruction of ammonia but also favours the direct dissociation of H2S into sulphur. Moreover, the dilution of the components is limited and this favours the Claus reaction and the conversion of H2S into liquid sulphur. This is particularly important for these gases that are naturally not highly concentrated. The sulphur recovered (a few tons per day for a coke plant for example) is pure and in liquid form.

Comparing with the catalytic ammonia destruction processes used until now, the yield is improved of more than 10%. The unit is also more compact, with savings in Capital expenditure.

Contact : Le Gaz Intégral, tél. : +33 (0)1 41 20 92 92 - Filippo Rossati


 

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