High-performance effluent-free pickling plants with fluid bed hydrochloric acid regeneration

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Iron and Steel Engineer

OSTI ID:131727

Rituper, R ^[1]

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1. Keramchemie GmbH, Siershahn (Germany). Process Engineering Division

There is perpetual need to increase the performance of production facilities in the steel industry. Cost and product quality advantages, increased productivity and environmental acceptable processing of steel are the most important considerations in today`s highly competitive market. The newly developed Keramchemie strip pickle line, the Vario process, consists of a high-velocity pickling cell comprising a shallow, horizontal channel section that results in a turbulent flow behavior in the pickling section. Optimization of the pickling process is achieved by automatic setting of the pickling parameters such as acid flow and pressure via process control. Spent pickle liquor is completely regenerated in a recovery system using the fluidized bed process. The pickle liquor recycled between the pickling tanks and regeneration unit, results in a nearly zero consumption apart from small evaporation losses. The rinse water is completely reused. This makes an effluent-free operation of the pickling plant possible. No environmental pollution is caused by the pickling process. Some effluent-free strip pickling plants are already in operation in Europe with HCl consumption of less than 0.2 kg/tonne of pickled material.

• OSTI ID: 131727
• Journal Information: Iron and Steel Engineer, Journal Name: Iron and Steel Engineer Journal Issue: 11 Vol. 72; ISSN 0021-1559; ISSN IRSEA5
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CONSUMPTION RATES
DESCALING
FLUIDIZED BEDS
LIQUID WASTES
METAL INDUSTRY
MINIMIZATION
PRODUCTION
REGENERATION
SEPARATION EQUIPMENT
SPENT LIQUORS
STEELS
TANKS
WASTE MANAGEMENT