Licensed Processes

Davy Monoethylene Glycol (MEG)

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Introduction

Johnson Matthey Process Technolgies (JMPT) now offers a new DAVYTM MEG licensed process in partnership with Eastman.

MEG is the most common industrial diol which is used in manufacture of polyes­ter fibre, fabrics and polyethylene tereph­thalate (PET) resin used for production of plastic bottles. Other industrial uses are as a coolant, heat transfer agent, antifreeze and a hydrate inhibitor in gas pipelines. Current worldwide consumption of MEG is approximately 26 million tonnes/year and has grown by over 5% per year over the last decade.

Our new process using proprietary catalyst developed by JMPT and East­man enables the production of MEG from methanol via formaldehyde. This offers a unique and exciting opportunity for methanol and/or formaldehyde pro­ducers who are interested in diversifying their product slate.

A simplified block diagram of the novel pro­cess is shown below. The key feedstocks are formaldehyde, carbon monoxide and hydrogen and besides MEG, the process produces a small amount of valuable di­ethylene glycol (DEG).

This new technology has been devel­oped in JMPT’s Global Research & Development Centre and demonstrated in mini-plants which are designed, constructed and operated by highly skilled and experienced profession­als. Comprehensive data collection from long-term operation of the mini-plants has enabled us to develop the design for com­mercial scale plants with MEG production capacity ranging from 200,000 to 500,000 tonnes/year.

DAVY is a trade mark of the Johnson Matthey group of companies.

Process Flowsheet

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The Davy Advantage

DAVY MEG process offers the following advantages:

+Breakthrough technology, reduced energy consumption and competitive costs:

  • MEG product meets fibre application requirements and both global ASTM and Chinese specifications
  • Process uses well-proven unit operations and has a competitive investment cost
  • Based on new, proprietary catalyst technology
  • Basic raw materials are synthesis gas and methanol, which are readily available.

+Superior economics:

  • Expect economies of scale with designs of > 200kt/a
  • Single train up to capacities of 500kt/a
  • Capex is competitive compared with other coal-based routes
  • Net production costs favourable compared to all other routes.

+Favourable environmental footprint:

  • Efficient use of raw materials (high conversion and selectivity)
  • Low waste water emissions
  • No hazardous by-products
  • Co-product is diethylene glycol (DEG) which has market value.
Related Processes

The DAVY MEG process employs a formaldehyde plant, which is also available from JMPT as the FORMOXTM licensed process. Find out more:

FORMOX is a trade mark of the Johnson Matthey group of companies.


Related Processes

The DAVY MEG process employs a formaldehyde plant, which is also available from JMPT as the FORMOXTM licensed process. Find out more: