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Standard Systems and Optional Components

Our Consulting & Technology Group diligently assesses customer needs to reduce consumables and upgrade emission controls

Picture of pickling line operations Picture of scrubber at pickling plant
The push-pull pickling technology developed by Nelson Steel’s Consulting & Technology Group offers the flexibility, capacity, and quality standards necessary to meet the needs of the constantly changing requirements of the steel market. Please contact us for a quote on any of the below systems or components.

Standard systems include:

Acid System

The acid system is designed to provide a turbulent acid bath in a series of pickling tanks. It consists of acid-resistant equipment to store, recirculate, heat, feed, and transfer acid.

Rinse System

The rinse system consists of a series of tanks to remove carryover acid from the strip before it leaves the processing section. Our unique Stain-Free® rinse system allows the strip to remain completely submerged from roll bite to roll bite in all stages, thereby allowing extended line stops without rejectable staining.

Fume Exhaust System

The fume exhaust system collects, scrubs, and vents fumes from the pickling tanks, rinse tanks, storage tanks, and recirculation tanks. It is designed to exceed governing environmental regulations for scrubber efficiency, hydrochloric acid (HCl) emissions, and indoor air quality. Components of this system consist of the scrubber, fan, ductwork, controls, droplet eliminator, and testing/inspection ports to monitor emissions.

Optional Components:

Turbo-Tunnel® System

Nelson Steel’s Turbo-Tunnel® design provides the most efficient turbulent pickling system. This unique system creates a high amount of turbulence around the strip, particularly at the strip edges where mill scale is the heaviest. The Turbo-Tunnel® design eliminates air space above the acid bath, thus reducing evaporation, heat loss, and acid consumption.

Wash System

The wash system is used to remove oil and other coatings from the strip prior to entering the pickling tanks, and to wash acid from the strip during a line reversal. This system can be installed as a single or double tank system.

Oil Separation and Alkali Recovery System

This system is provided to remove free and emulsified oil from the wash recirculation tank and return the clean water with alkali to the wash work tank.

Spill Line System

The purpose of the spill line system is to redirect any liquid that has gathered in the chemical pit sump to the most suitable location.

Water Treatment Systems

These systems condition the waste rinse water for disposal to a municipal sewage treatment plant by neutralization and precipitation of suspended solids. The design and integration of waste rinse water treatment includes clarifier and effluent-free systems. All water treatment systems incorporate the latest technology to ensure compliance with local regulation for effluent quality.

Boiler System

This complete steam generating system supplies sufficient steam for heating acid and water for all of the systems in the pickling line.

Feed Water System

This system preheats water from the softeners and chemicals from the chemical feed system before pumping them into the boiler.

Condensate System

This system is used to collect condensate from the heat exchangers and re-use it as feed to the boiler system.

Dry-Lube Coating System

This system provides the coating unit with various types of dry lubricant solutions.

Spray Rinse System

Prior to the development of our Stain-Free® design, the spray rinse provided sufficient water coverage over the strip to remove residual acid. This system is available if requested.

Structural Steel

This component consists of structural beams, columns, walkways, handrails, stairs, and platforms engineered and provided to support a complete pickling line.

Stack Tower

The stack tower is used to support the fume exhaust stack and comes complete with caged access ladders and inspection platforms at two elevations. The platforms allow access to the droplet eliminator and sample ports which are located on the stack.

Acid Proofing

Our acid proof lining system provides protective coverage throughout the processing section to resist corrosion from concentrated hydrochloric acid (HCl) and caustic.

Optional components such as  stack towers to monitor emissions are rigorously assessed depending on customer needs, environment and other considerations.

Picture of stack tower at pickling plant to monitor harmful emissions

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