Brochure
Superior operations
for unparalleled quality
Our solution is an innovative extractive distillation process that helps operators deliver high-quality styrene
with a simplified and more efficient operation process.
EcoStyrene is designed to recover styrene from raw pyrolysis gasoline (pygas) generated from steam
cracking of naphtha, gas oils, and natural gas liquids (NGL) within a petrochemical complex.
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Main benefits
Key characteristics
BTX and sulfur removal: Simultaneously recovers BTX aromatics and removes sulfur from FCC gasoline streams
Low-sulfur, high-octane gasoline: Delivers gasoline that meets strict environmental and quality standards
Enhanced profitability: Maximizes value by producing valuable aromatics and retaining gasoline yield
Reduced operating costs: Lowers energy and hydrogen consumption compared to conventional processes
Distillation-based process: Advanced columns and proprietary solvents ensure efficient BTX and sulfur removal
Flexible operation: Adapts to a wide range of FCC gasoline feedstocks and sulfur contents
Simulation and testing capability: In-house simulation and technical-scale testing for process optimization
Proven performance: Used in commercial applications with proven reliability and results
Easy integration: Can be installed as a new unit, retrofit, or expansion to existing facilities
GT-DWC™ - Dividing Wall Column Design Saves Costs and Energy
GT-DWC (Dividing Wall Column) is Sulzer’s patented distillation technology that separates multi-component feeds into three or more high-purity streams within a single tower. By eliminating secondary columns, GT-DWC cuts capital costs by 20–40% and energy consumption by 15–30% compared to conventional systems. Ideal for heart-cut separation (e.g., benzene/toluene/xylene splits), it delivers unmatched efficiency for refineries, petrochemical plants, and chemical processors.
30% Lower Operating Costs
Reduces energy and capital expenses by consolidating separations into one column
Ultra-High Purity Streams
Achieves >99% purity for light, middle, and heavy components in a single step
Compact, Scalable Design
Saves 40% footprint vs. traditional systems and adapts to existing facilities
Turn Waste into High-Value Styrene with EcoStyrene Technology
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Feed Injection: Multi-component feed enters the pre-fractionation section
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Wall Separation: A vertical wall splits the column light components rise, heavies descend
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Heart-Cut Extraction: Middle-boiling products (e.g., toluene) are drawn at peak purity
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Stream Purification: Overhead (lights) and bottoms (heavies) exit as high-purity products
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Petrochemical (BTX separation), refining (naphtha splits), and chemicals (solvent purification)
Integrated heat recovery and reduced reboiler duty lower energy use by 15–30%.
Yes Sulzer’s engineering team designs retrofits for quick integration.
Sulzer’s proprietary trays/packing ensure pressure balance and distribution for stable operation
