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Bio-Ethylene Oxide / Bio-Ethylene Glycol

Bio-EO and Bio-MEG from renewable ethylene

Feedstocks
Renewable ethylene
Products
Bio-ethylene oxide (Bio-EO)Bio-ethylene glycol (Bio-MEG)
Maturity
Commercial
Bio-Ethylene Oxide / Bio-Ethylene Glycol

Petron extends its renewable-ethylene platform into bio-ethylene oxide (Bio-EO) and bio-ethylene glycol (Bio-MEG), the renewable intermediates behind PET packaging, polyester fiber, and a wide range of derivatives.

Petron’s solution & differentiators

A licensable process to oxidize renewable ethylene to Bio-EO and hydrate it to Bio-MEG, producing drop-in renewable chemicals that integrate directly with existing polyester and PET production. It carries over three decades of experience, with an innovative, patented improved quench, quench bleed stripper, and EO stripper bypass, and works with every type of EO catalyst available on the market (high selectivity, high performance, high tolerance, and others) from any vendor worldwide. This patented system brings several advantages over competitors:

ParameterUnitPetronCompetitorsRemarks
Improved quench systemYesNot availableRemoves formaldehyde and other acidic materials.
Cycle water treatment unitNot requiredRequiredLower investment, lower effluent generation, lower chemical consumption.
EO stripper bypassPetron’s patentNot availableReduced steam consumption in the EO stripper, reduced investment in the stripping section, reduced cooling water consumption.
Catalyst selectivity%+91 (SOL) & 87 (EOL)Less than 88 (SOL)Improves plant efficiency: lower ethylene and oxygen consumption.
Catalyst lifeYears42 to 3 max.Fewer shutdowns for catalyst change, lower production loss and maintenance cost during catalyst changes.
Catalyst WRkg/m³/h+250LowerLower catalyst requirement per change, lower reactor size and investment.
MEG quality (UV @ 350, 275 & 220 nm)%100, 95 & 85Lower than PetronBetter product quality with no post-treatment of MEG required; lower aldehyde and acidity contents.
CATACARB process for CO₂ removalTechnology available in associationNot available to competitorsLower investment due to use of carbon steel, smaller equipment sizes, better equipment life due to the non-corrosive nature of the process used.

Applicable feedstocks & products

Renewable ethylene (from Petron’s EtE technology) into Bio-EO and Bio-MEG for the renewable PET value chain and downstream derivatives.

Commercial maturity

Available for licensing as a standalone EO/EG plant or as part of an integrated complex, starting from 1.0G, 1.5G and/or 2.0G ethanol up to any of the integrated downstream chains such as renewable PET, renewable ethanolamines, renewable ethoxylates, and more.

Full technical brief in preparation with the Petron technology team.

How it works

Process block diagram

Ethylene to HPEO and glycols: chemical-grade ethylene and oxygen from an air separation unit through EO reaction, scrubbing, stripping and reabsorption, and purification to high-purity ethylene oxide, with a glycol reaction and purification train producing MEG, DEG, and TEG, and a CO2 removal system recovering carbon dioxide.
Fig. 01 Ethylene to HPEO and glycols

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