Technology partners
| Consumables | Acid PipingElessent MECS |
| Corrosion Protection | Acid PipingDrake Specialties |
| Emission Control | EcosystemsSensia |
| Energy Recovery | Elessent MECSKalfrisa |
| Gas Handling | Acid PipingDaltec FansDürrEcosystemsKalfrisa |
| Hardware & Spare Parts | Acid PipingDaltec FansDürrKalfrisaSulphurnet |
| Monitoring & Detection | Ohio LumexSensia |
| Process Technology | Elessent MECS |
| Services | Daltec FansElessent MECSOhio LumexSensia |
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Everything to keep your process under control
No two plants are alike. Different processes, different configurations, different materials; in practice, every installation is a world of its own. Off-the-shelf solutions simply don’t cut it: what works in one plant may be inadequate or even counterproductive in another.
Holtec works with a select group of world-class technology partners to design and implement tailor-made solutions, integrating equipment, technologies and supplies based on how each specific plant actually operates. It is not about selling components: it is about understanding the complete process and choosing the right tools for each case.
Our partners cover the full spectrum of needs for sulfuric acid plants and smelting, refining operations: from process technology and major equipment to supplies, spare parts and monitoring systems.
Acid Piping Technologies
With over 30 years of experience, APT leads the world market for products for the sulfuric acid industry. Together we offer Mondi piping systems installed in more than 850 acid lines worldwide, ceramic packing for drying, absorption and gas cooling towers, gas cleaning systems for smelters and refineries, and the complete range of ASC Valves gas dampers and jug valves, for which APT is the exclusive worldwide representative.
Piping Systems
Supplies & Spare Parts
Find out more TopDaltec – Process fans and blowers
Daltec designs and manufactures custom-engineered process fans and blowers for sulfuric acid plants, smelters and refineries.
We work alongside Daltec from process specification – flow, temperature, gas composition – through to equipment delivery, ensuring every solution responds exactly to each plant’s specific operating conditions.
Holtec is the exclusive representative of Daltec for sulfuric acid plants across South America.
Equipment
Services
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Drake – Safety & Corrosion Prevention
In sulfuric acid plants, smelters and refineries, flange joints and pipe connections are permanent leak risks. A pressurized acid spray is not just a process loss; it is a safety incident.
Drake Specialties designs and manufactures safety spray shields, flange protectors and pipe protection systems specifically engineered to contain leaks, protect personnel and prevent equipment damage in the most corrosive industrial environments.
Certified under ISO 9001 and ABS Design Assessment, Drake products are made in the USA and installed in plants worldwide.
Products
- Fabric Safety Spray Shields
- Metal Safety Spray Shields
- Flange Protection System
- Flange Isolation Gasket Kits
- Specialty Shields & Covers
Dürr Clean Technology Systems
Dürr is a world specialist in emission control and industrial gas cleaning, with decades of experience in sulfuric acid plants, smelters and refineries.
We work with their wet electrostatic precipitator technology for sulfuric acid mist and fine particulate control, achieving removal efficiencies of up to 99.9% in multi-stage configurations.
For smelters and refineries, Dürr also offers evaporative gas cooling and conditioning systems that control high-temperature gases from converters, protecting downstream equipment and improving the efficiency of the entire gas cleaning train.
Products
- Part.X PW Wet Electrostatic Precipitator
- Part.X PW Acid Mist Precipitator
- Evaporative Gas Cooling Systems
Ecosystems Europe – Emission Control
With 40 years of experience and over 300 projects worldwide, Ecosystems Europe is a top-tier partner in gas cleaning and emission control for sulfuric acid plants, smelters and refineries.
Together we offer desulfurization, acid mist elimination, acid fume treatment, gas scrubbing and sulfuric acid dew point monitoring, critical for SO3 control in smelter process gases.
Shared clients include Boliden, Codelco, Glencore, Molymet, Nexa and Southern Copper, among others.
Products & Solutions
- Brink Fiber Bed Mist Eliminators
- DynaWave Reverse Jet Scrubbers
- Venturi & Spray Scrubbers
- Acid Fume Treatment
- Sulfuric Acid Dew Point Monitor
- VOC Emission Reduction
Elessent MECS Technologies
MECS technology is the world reference in sulfuric acid production, with nearly a century of history and over 1,000 licensed plants worldwide. Marketed by Elessent Clean Technologies, it encompasses solutions that have redefined industry standards in sulfuric acid production, energy recovery and emissions control.
We work with Elessent across sulfuric acid plants, smelters and refineries throughout the region, integrating process technology, equipment and specialty products into tailor-made solutions for each operation.
Technologies
- HRS Heat Recovery Systems
- MAX3 Production Technology
- SolvR Regenerative SO2 Scrubbing
- DynaWave Scrubbers
Supplies & Spare Parts
Services
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Kalfrisa – Energy and Environment
Kalfrisa develops a wide range of technical solutions for different industries.
In sulfuric acid plants, preheaters or start-up heaters bring and maintain catalytic beds above their auto-ignition temperature and provide flexibility to the plant.
They enable fast start-ups and allow the system to respond to variations in SO₂ concentration and flow.
The tube bundles are the key component in their design.
They serve as a highly efficient heat transfer surface, enabling uniform heat distribution and rapid energy exchange, enhancing performance, reliability, and the service life of the equipment.
Together we offer:
Find out more TopOhio Lumex – Process Gas Monitoring
Continuous sulfuric acid dew point monitoring is one of the most valuable tools for proactive plant management: a shift in dew point is the earliest signal of moisture ingress into the process gas, indicating potential leaks in boilers, economizers or heat exchangers before they become a serious problem.
Ohio Lumex offers the Ei4200 monitor, a proven and significantly improved technology that operates continuously and maintenance-free, designed specifically for sulfuric acid plant process gas conditions.
Products
Services
Find out more TopSensia – Fugitive Emissions Detection
Controlling fugitive emissions of SO2, hydrocarbons and VOCs is a critical challenge for smelters, refineries and sulfuric acid plants, both for environmental compliance and operational safety.
Sensia offers Optical Gas Imaging (OGI) systems with real-time detection and quantification, powered by artificial intelligence through their RedLook platform.
We work with Sensia’s handheld and fixed camera systems, which detect and quantify leaks of SO2, hydrocarbons, VOCs and other industrial gases from safe distances and in hard-to-reach areas.
An indispensable tool for LDAR campaigns and for compliance with increasingly stringent environmental regulations.
Handheld Cameras
- Caroline Y – SO2 & Methane Detection
- Caroline XY – Broadband OGI
- Caroline X – Ammonia & Refrigerants
Fixed Monitoring
Platform
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Sulphurnet – Sulfur Purification
With over 200 clients worldwide, Sulphurnet specializes in the design and manufacture of liquid sulfur filtration and purification systems, from individual filters to complete turnkey melting and purification plants.
Effective sulfur filtration is critical to acid plant performance — removing ash, acidity and organics that would otherwise contaminate the catalyst bed and waste heat boiler.
Together we offer the complete Sulphurnet range for sulfur-burning acid plants and smelters.
Filtration Systems
- Pressure Leaf Filters
- Self-Cleaning Candle Filters
- Liquid Sulfur Polishing Filters
- Self-Cleaning Strainers
Complete Plants
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