

Chemical Industry
At Sulzer, we help chemical producers balance competitiveness with sustainability by providing advanced process technologies and lifecycle services. Our solutions are designed to optimize efficiency, improve reliability, and reduce environmental impact empowering our customers to achieve both immediate performance gains and long-term transformation.
Shaping the Future of Chemical Production with Efficiency and Sustainability
The chemical industry is essential to global value chains, supplying products that underpin countless applications. At the same time, producers face rising energy costs, tightening regulations, and ambitious CO₂ reduction targets. Meeting these demands requires smarter, cleaner, and more flexible ways of operating.
Operating in today’s chemical sector means addressing multiple, interconnected challenges:
High energy intensity
Conventional separation consumes large amounts of steam and utilities.
Environmental and regulatory pressure
CO₂ commitments and regulations demand cleaner production methods.
Complex separations
Close-boiling mixtures, azeotropes, and heat-sensitive compounds challenge product purity and yield.
Operational reliability
Plants must run continuously and flexibly while minimizing downtime and maintenance costs.
Our portfolio of solutions and services is designed to help chemical producers address their most pressing challenges and achieve measurable improvements. By optimizing processes, we enable greater energy efficiency and cost savings, while lowering emissions through cleaner, more sustainable operations. Our expertise in advanced separation ensures higher product purity and yield, and our technologies provide the flexibility needed to manage variable feedstocks and adapt to changing customer or regulatory requirements. Beyond technology, we also deliver reliability through comprehensive services that extend equipment lifetime and minimize downtime. With Sulzer as a trusted partner, chemical producers can modernize their operations, strengthen competitiveness, and move confidently toward their sustainability goals.
Main applications of chemical industry
Alcohols & Glycols
-
Methanol
-
Ethanol
-
IPA
-
MEG
-
Propylene Glycol
Ethers & Esters
-
MTBE
-
DIPE
-
Ethyl Acetate
-
Butyl Acetate
Acids & Anhydrides
-
Acetic Acid
-
Adipic Acid
-
PTA
-
Maleic Anhydride
Isocyanates & Related
-
MDI
-
TDI
-
MDA
Halogenated Compounds
-
DCM
-
EDC
-
ECH
Specialty Chemicals
-
Hydrazine
-
Methylhydrazine
Explore our solutions for chemical industry

Circularity
Advanced plastics recycling
Explore our references for chemical industry
Chemicals
Portugal
Transforming pulp waste into profitable and sustainable revenue with EvapCare™-F
Challenge:
Recover valuable chemicals (acetic acid and furfural) from wastewater streams while reducing environmental risks, meeting strict compliance requirements, and minimizing excessive energy consumption.
Solution:
Implemented EvapCare™-F falling film vacuum distillation combined with OptimEXT™ liquid-liquid extraction in a 3x skid-mounted design, validated through internal product testing.
Technology:
Results:
Converted waste into profit (+€1.5M/year), achieved 10x lower energy consumption (saving 720,000 tons of steam/year), and ensured full compliance with EU water regulations.
Chemicals
Europe
Efficient solvent recovery with EvapCare™-W in specialty chemicals
Challenge:
Recover high-purity solvent from a feed containing 3–10% solids, while minimizing losses of solvent with solids and reducing high steam consumption. Create a reliable unit to recover maximum solvent for circularity.
Solution:
Implemented a skid-mounted EvapCare™-W unit with integrated heat recovery to concentrate solids and recover solvent efficiently.
Technology:
Results:
Achieved 98% solvent recovery, reduced steam usage by 25%, saved approx. €450,000/year in solvent and €150,000/year in energy, and enabled robust operation with solids concentrated up to 65%.
Chemicals
United States
Flexible wastewater separation upgrade
Challenge:
A polymer producer needed to replace the existing binary column wastewater unit as it was not separating light and heavy alcohols from the wastewater efficiently and represented an environmental problem. The new system had to operate with enough flexibility to handle varying polymer production upstream.
Solution:
Sulzer conducted a FEED study to design a flexible and reliable system that prevents polymer-related blockages. The final design included two columns using PEMFlux stripping technology to meet the strict specifications for isopropanol and TAA in the bottoms stream.
Technology:
Results:
Since 2019, the system has operated smoothly, adapting to changing feed conditions while consistently meeting environmental discharge standards.
Chemicals
Belgium
High yield recovery of ethyl acetate and toluene in adhesives industry
Challenge:
The Customer would like to recover both ethyl acetate and toluene from a single waste that had variable compositions day-by-day. Very high yield (up to 98%) and purity (>99.8%) for both products were targeted. Furthermore, these products had a highly challenging water specification to fulfill (<200 ppm).
Solution:
Delivered a compact Excelot™ skid-mounted unit with innovative design enabling recycling of intermediate cuts to boost yield without compromising purity.
Technology:
Results:
Fulfilled both high purity and yield targets, ensuring efficient and sustainable solvent recovery for the adhesives industry.
Chemicals
Europe
Optimizing methanol distillation with Sulzer VoltaSplit™
Challenge:
Design a methanol–water distillation system for a green methanol plant powered only by renewable energy with no access to steam, while cutting down energy usage and aligning with the plant’s sustainability objectives.
Solution:
Implement an electrified distillation system equipped with VoltaSplit™ using mechanical vapor recompression (MVR) to compress overhead vapors and reuse their energy to heat the distillation system, eliminating the need for external heat sources like steam.
Technology:
Results:
Achieved utility savings of $4M/year vs. conventional distillation, reduced CO₂ emissions by 81–98% (depending on electricity source) and payback time in under two years.
Chemicals
Morocco
Up to 40% less CAPEX in phosphoric acid purification with OptimEXT™
Challenge:
Reduce high capital costs and large footprint of traditional phosphoric acid purification processes, which require multiple mixer-settlers or columns for extraction, scrubbing, and stripping steps.
Solution:
OptimEXT™ with integrated Kühni™ extraction columns capable of combining multiple steps (extraction + washing) in a single unit, reducing equipment count and auxiliary systems.
Technology:
Results:
Achieved food-grade phosphoric acid with high recovery yield, reduced CAPEX by up to 30% (plus 10% from auxiliary equipment elimination), minimized footprint by 30%, and shortened start-up times by 15–20%.
Chemicals
China
Chemtech develops circular system for leading sebacic acid manufacturer
Challenge:
Reduce phenol concentration in wastewater from 1,000 ppm to 300 ppm while reusing phenol to lower environmental impact and costs.
Solution:
OptimEXT™ an innovative liquid-liquid extraction system using ricinoleic acid as a solvent, integrated into a Kühni agitated column (ECR) to recover phenol and create a circular process.
Technology:
Results:
30 m column processing 77,000 L/h, achieving 200 ppm phenol (better than the 300 ppm target), with 50%–120% capacity flexibility, reducing costs and environmental footprint.
Chemicals
China
OptimEXT™ transformed phenol recovery for a phenolic resin producer
Challenge:
The client’s batch-based process produced phenol-rich wastewater with complex contaminants like formaldehyde and alcohols. This led to high variability, frequent manual adjustments, low efficiency, and reduced product quality.
Solution:
OptimEXT™ with advanced solvent recovery and distillation systems, enabling automated, efficient phenol recovery and reuse.
Technology:
Results:
Achieved >99.8% extraction efficiency, reduced phenol in wastewater to 45 ppm (below 100 ppm target), eliminated low-grade resin by-product, enabled premium resin production, improved sustainability, and delivered a payback period under two years.
150+ Years Experience
Proven track record in chemical process engineering and equipment manufacturing.
Global Presence
Worldwide support network with local expertise and rapid response capabilities.
Quality Assurance
ISO certified processes and rigorous quality control for reliable, safe operations.