World’s Largest Ventilation Air Methane/Coal Mine Methane Oxidation Project Goes Live

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World’s Largest Ventilation Air Methane/Coal Mine Methane Oxidation Project Goes Live


Aerial view of Gaohe coal mine

Plymouth, Michigan, September 09, 2015 - Dürr Systems, Inc. Clean Technology Systems (CTS), has completed the installation and commissioning of the world’s largest ventilation air methane/coal mine methane (VAM/CMM) oxidation and utilization project at the Gaohe coal mine. It is owned by the Lu’An Coal Mining Group in Shanxi Province, China. This project was formally put into operation in May 2015.

The project enables 100 million Nm3 methane/yr to be utilized for power generation, reduces greenhouse gas emissions by 1.4 million tCO2e/yr, and significantly reduces the amount of coal dust particulates, a major source of air pollution. Methane’s global warming potential is 25 times more than that of CO2.

Up to 1,020,000 Nm3/h of ventilation air methane and 60,000 Nm3/h of coal mine methane are thermally oxidized in the project using Durr’s Regenerative Thermal Oxidizer (RTO) technology.

Up to 300,000 Nm3/h of hot exhaust gas is delivered to a boiler to generate water steam which is used for the generation of up to 30 MW of electricity by a turbine generator.

Mine and working safety is of key importance for the project. Part of the applied multi-level safety system is a rigorous hazardous operation and safety analysis in the pre-project phase.

Dürr Systems, Inc. CTS has also engineered, built, installed and commissioned the first full-scale VAM oxidation system in the United States, which has been successfully operating since 2013. Furthermore, Dürr Systems, Inc. has begun the engineering phase of several new VAM/CMM oxidation and utilization projects throughout China.

Technical data

Regenerative Thermal Oxidizers included:


System square footage:

250,000 ft2 (23,200 m2)

Process flow:

1,020,000 Nm3/h of VAM and 60,000 Nm3/h of CMM

Available generated electricity:

Up to  30 MW

About Dürr USA

The Dürr Group has been established in the United States since 1970 and currently employs around 820 staff. Dürr USA represents four of the five divisions and offers the majority of the Group's portfolio, currently operating from two production and service sites: in Plymouth – paint and final assembly systems, exhaust-air purification systems and energy efficiency technology; in Auburn Hills – application, balancing, testing, filling and cleaning technology. In 2016 these two sites will be consolidated into one engineering, research and equipment test center in Southfield, MI. Dürr subsidiary Schenck Trebel, based in Deer Park (New York), offers balancing systems for general industry. The customers of Dürr USA include automotive and commercial vehicle manufacturers as well as their suppliers, and a diverse group of other industries. WEEKE North America operates the production facilities for HOMAG Group at the Grand Rapids site (Michigan), which is also the base for sales and service company Stiles Machinery Inc.

The Dürr Group is one of the world's leading mechanical and plant engineering firms. Products, systems and services offered by Dürr enable highly efficient manufacturing processes in different industries. Business with automobile manufacturers and their suppliers accounts for approximately 60% of Dürr's sales. Other market segments include, for example, the mechanical engineering, chemical and pharmaceutical industries and – since the takeover of HOMAG Group AG in October 2014 – the woodworking industry. Dürr has 92 business locations in 28 countries. With 14,200 employees, the Group plans to generate sales revenues of € 3.4 - 3.5 billion in 2015. The Dürr Group operates in the market with five divisions:

• Paint and Final Assembly Systems: paint shops and final assembly systems for the automotive industry

• Application Technology: robot technologies for the automatic application of paint as well as sealants and adhesives

• Measuring and Process Systems: balancing and cleaning systems as well as testing and filling technology

• Clean Technology Systems: exhaust-air purification systems and energy-efficiency technology

• Woodworking Machinery and Systems: machinery and systems for the woodworking industry


Dürr Systems Inc.
Clean Technology Systems
Colleen O’Brien
Phone: +1 734-254-2311
Email:  Colleen.O’Brien(at)



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