Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Martin Leipnitz

Juergen Hecke

Wolfgang Kern

Andreas Bulan

Johann Rechner

Rainer Weber

Thomas Freitag

Axel Hirschberg

Ralf Friedrichsen

Volker Rossmann

Bernd Henning

Andreas Brachmann

The invention relates to a method for flexibly controlling the use of hydrochloric acid having an HCl concentration of at least 10 wt %, in particular at a volume flow rate of at least 1 m/h, obtained from a continuous chemical production process (A). In the method, purified hydrochloric acid () from a hydrochloric acid store (E) is optionally fed to a dispatch station (H), an HCl electrolysis station (F) and a chloralkali electrolysis station (L), which are consumption points for the hydrochloric acid, or to a neutralisation station (G) in that if one or more of said consumption points (H, F, L) is not available or if there are bottlenecks at the consumption points (H, F, L), the hydrochloric acid () is fed to the neutralisation station (G) and neutralised with concentrated alkali solution (), in particular with concentrated sodium hydroxide solution, and the resulting salt solution () is fed either to the chloralkali process station (L) or to a disposal station (M).

Method for flexibly controlling the use of hydrochloric acid from chemical production

Disclosed is a method and a device for the continuous neutralization of hydrochloric acid at an industrial scale.

Method and device for the continuous neutralization of hydrochloric acid

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Cologne, Germany

Martin Leipnitz