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Industry Challenges

Paper and pulp mills run complex chemical and thermal processes that generate a range of air and water emissions. Managing black liquor, bleaching vents, and process condensates while keeping energy systems efficient creates technical and regulatory pressure. These are the challenges that matter most.

Variable Process Vents

Pulping, bleaching and storage operations produce vents with variable flow, heat value and chemical composition, making consistent destruction difficult.

VOCs, Reduced Sulphur and Particulates

Bleaching and kraft processes release volatile organic compounds, reduced sulphur compounds and particulates that create odour, health concerns and regulatory exposure.

Black Liquor Management

Recovery boilers are critical for chemical recovery and steam generation. Handling black liquor safely while minimizing NOx and particulate emissions is a continuous challenge.

Tail Gas and Corrosive Streams

Tail gas from recovery, upgrade, and condensate treatment can be dilute, low in energy, and corrosive. Systems must balance destruction efficiency with robust materials and heat recovery.

The CRA Edge

At CRA, we combine combustion engineering with systems integration to deliver compliant, efficient, and durable solutions for paper and pulp mills.

Proven Combustion

Decades of experience delivering advanced flare and combustion safety systems.

Emission Controls

Engineered gas treatment and combustion solutions reduce emissions and improve compliance.

Energy Integration

Advanced integrated heat recovery solutions for better mill efficiency.

Built to Last

Premium alloys, rugged designs, and proven engineering ensure long-term reliability.

Our Clients

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Frequently Asked Questions

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Why are bleaching and pulp vents so difficult to treat?

They vary in flow and chemistry and often contain low concentrations of VOCs, reduced sulphur compounds and moisture which complicates destruction and materials selection.

How do mills manage corrosive tail gas and condensates?

By selecting suitable alloys, coatings and scrubbers, and by using enclosed oxidation systems or specialty thermal oxidizers designed for acid.

What monitoring is needed for compliance?

Continuous emissions monitoring for VOCs, NOx and particulate, plus periodic DRE testing and process emissions inventories, support regulatory compliance and ESG reporting.