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Corporate history

RJM International is a UK-based, award-winning, specialist provider of combustion and emission control products and services to the power generation and large combustion plant sector.

As well as its head office in the UK, the company has recently opened subisidiary offices in Singapore and Tulsa, Ok, USA. The North American subisidary marks a return to the US market for RJM afer an absence of 14 years.

RJM was originally founded in the USA in 1977 and has been trading strongly in the UK and Europe since 2000, when US-based RJM Corporation Inc. set up its European arm.

In 2004, RJM Corporation ceased trading in the USA but its European managers were keen to continue to grow the business and set the wheels in motion for a management buyout.

The MBO was completed successfully in February 2005 and in May of that year, a major re-branding of the business was implemented to reflect the new ownership structure under the RJM International name.

RJM International is today a private limited company, with the majority of its shares owned by the senior management team. In 2005, it more than doubled its turnover and did so again in 2006.

RJM has built up a strong team following the MBO and the company has continued to expand year on year, improving its service offer and widening its portfolio of RJM-designed and manufactured products, ranging from small replacement components for oil light-up equipment to complete sets of RJM's own Ultra-Low NOx Burners, suitable for coal, oil, gas or biomass-fired boilers.

Since 2000, RJM International has completed over 60,000MWe of major combustion and emission control projects at power generators and other large combustion plants throughout the world.

Some of its most recent successes include:

2018  UK  RJM wins world-first conversion project to enable coal plant to fire 100% waste-derived energy pellets. More...

2018  USA  RJM opens a subsidary office in Tulsa, Ok to target new opportunities in North America. This marks a return to the USA after an absence of 14 years.

2018  Singapore RJM opens a subisidary office in Singapore to target new markets in Asia-Pacific and China.  

2017 UK RJM is awarded The Queen's Award for Enterprise - Innovation 2017 by the UK government. More... RJM appoints Buka Power as its agent in India. More...

2016 CHINA RJM completes its first major project in China, with the introduction of nine of its new ultra-low NOx CleanAir BurnersTM retro-fitted to a district heating plant outside Beijing. These burners meet the stringent NOx limits of China's new Clean Air Act and are helping to improve air quaility in the city. More...

2016 UK RJM awarded BS EN ISO 9001: 2015 Quality Management System Certification.

2015 UK AND WORLDWIDE RJM wins the prestigious Innovation Award from the Energy Institute. The company also secures addtional new contracts at UK and overseas power plants as the market continues to recognise that RJM can help generators achieve NOx levels below 200mg/Nm3 using primary measures only. RJM completes move into new offices.

2014 UK RJM announces move into larger, prestigious premises in Winchester to better serve its growing customer base and secures major NOx reduction projects from EDF for two of its coal-fired plants in England.

2013 UK AND WORLDWIDE RJM secures contract at SSE Ferrybridge to replace all 48 burners on Unit 4 with its own range of Ultra-Low NOx Burners. This follows on from a similar, sucessfully concluded proeject on Unit 3 during 2011 (see below.) Two variants of RJM's own Ultra-Low Nox Biomass Burners now on test at a major UK power plant; an RJM-designed and built gas burner installed on an industrial process plant in China; a waste fuel biomass feasibility study for a power plant in Italy, plus a number of other confidential projects for some of the world's leading power supply and utility companies.

2012 UK RJM completes a number of assignments for global generators, helping them explore the potential of co-firing or full conversion to biomass for their fossil-fuel fired plants, to enable them to meet the latest IED regulations and secure appropriate carbon emission reductions.

2011 UKRJM installs 48 of its own Ultra-Low NOx burners at SSE Ferrybridge on Unit 3 with some additional work to improve the existing BOFA nozzles. As a result, NOx levels of 500mg/Nm 3are now down to 250mg/Nm 3and additional benefits include lower CO, now below 200ppm and lower carbon loading at the BOFA ports. By raising oxygen levels at the burner, a reduced air flow at the BOFA port has now been achieved. In addition, instead of having to consider an SCR system which might have cost between £50m - £100m per unit, it can instead achieve that target with much lower capital expenditure, allied to the combustion of realistic quantities of biomass co-firing.

2010 UKFull CFD analysis at SSE's Ferrybridge power plant in the north of England to dentify why there were very high temperatures in the superheater and the convective section and to resolve the incompatibiliies between the retrofit BOFA system and the first generation Low NOx burners. Having asked RJM to complete a full furnace CFD survey, the plant operators at Ferrybridge ordered 48 of RJM's Ultra-Low NOx burners to be installed on Unit 3 with some additional work to improve the existing BOFA nozzles.

2010 Italy As a follow-up to the MLR study at Edipower's Brindisi plant, an Air Distribution Analysis (ADA) survey was carried out to optimise performance and efficiency at minimum loads. In addition to improving burner and furnace stability at minimum load, a 29% reduction in Carbon in Ash was also achieved.

2010 Italy RJM carried out a Minimum Load Reduction (MLR) study at Edipower's thermal power plant at Brindisi to evaluate reducing the minimum load (on coal only) from 155MWe to 135MWe.

2009 FranceRJM was invited by EDF to carry out a a site survey at one of its oil-fired plants at Porcheville near Paris to find out what its options were to deliver peak network power and still meet the latest NOx emission limits, as set out in the 2010 LCPD. As all four units of the plant were configured differently, RJM's report provided a set of individual solutions for each one, in a way that would yield maximum emissions benefit at minimum cost. RJM confirmed that excellent performance could still be achieved without the need to add SNCR or SCR technology to the units.

2008 Hungary RJM successfully completed optimisation and performance testing on Units 2 and 3 at AES Tisza. Following the RJM upgrades, NOx levels are now less than 150mg/Nm 3on natural gas and less than 200mg/Nm 3on C9 oil. These results can also be replicated on Units 1 and 4 by applying the same settings. Thanks to RJM's efficiency improvements at the plant, all four 215MW units have now been re-rated to 225MW.

2008 Northern Ireland RJM successfully completes major NOx reduction project at AES Kilroot. Key performance results include a 31% reduction in NOx and a 31% reduction in Carbon in Ash firing South African coal; a 47% reduction in NOx and 69% reduction in Carbon in Ash firing Colombian coal and a 22% reduction in NOx firing oil.

2007 Hungary 24 month warranty period now successfully completed for Units 1 and 4 (both oil/gas units) at AES Tisza, Hungary, fitted with RJM low NOx upgrades. (See November 2004.)

2006 Netherlands RJM concludes natural gas optimisation at Essent Energi Clauscentrale. The NOx emissions at full load of 640MWe were 150mg/Nm 3, 25% lower than the guarantee of 200mg/Nm 3. Other operational benefits are also realised with full Unit turndown with all burners in service achievable for the first time since these Units were built in the early 80s, elimination of furnace vibration and lower operating excess oxygen. The Unit previously suffered from high metal temperatures in the primary reheater and this problem was also solved.

2006 Northern Ireland Secured the turnkey NOx reduction project at Kilroot Power Plant, Carrickfergus. This site has two 260MWe coal/oil T-fired units which are currently fitted with low NOx technology.

2005 Netherlands Completed installation and start-up of a 640MWe gas/bio oil-fired supercritical boiler at Maasbracht for Essent Energie. The previous low NOx firing system was provided by Deutsche Babcock Lentjes, but the unit was modified with RJM low NOx technology to meet emissions below the LCPD limits. The new RJM low NOx firing system started up first time, with no issues.

2005 Turkey Completed the low NOx modification and addition of natural gas firing to three oil-fired units at Mersin Soda Power Plant. All three units were brought back to service on time and all guarantees were passed first time.

2004 Hungary Completed the low NOx upgrade of two 215MWe oil/gas units at AES Tisza. Both units (Units 1 and 4) passed their performance tests first time and on schedule.

2004 Malaysia Completed firing system upgrades on two heaters for British American Tobacco at Kuala Lumpa.

2003 Chile Completed firing system upgrades for British American Tobacco.

RJM Corporation was founded in 1977 by Richard Monro in the United States as an R&D consulting firm. RJM's history is extensive and includes over 60,000MWe of installations worldwide. It was the first company to employ burner modifications and has the largest reference list in the industry for modifying all makes and models of burners and boilers, for all fuels and firing configurations, even existing low NOx burners.

RJM timeline


RJM wins world-first FEED project to convert coal power station to fire 100% waste-derived energy pellets.


RJM returns to the USA and establishes a new North American operation. 


RJM establishes Asia-Pacific operation to target new opportunities in China and the Far East.


RJM wins The Queen's Award for Enterprise - Innovation 2017. RJM appoints Buka Power as its agent in India.


RJM completes its first major ultra-low NOx project in China. RJM also meets BS EN ISO 9001: 2015 Quality Management System Certification.


RJM wins major new projects in the UK and overseas. RJM also wins the Innovation Award, granted by the Energy Institute. RJM moves into new HQ.


RJM wins major new NOx reduction projects at two of the UK's largest coal-fired power stations, operated by EDF.

RJM secures prestigious new premises to better serve its rapidly-growing portfolio of UK and overseas customers.


RJM wins 2nd multi-million pound contract from SSE Ferrybridge to install 48 of its own Ultra-Low NOx Burners on Unit 4.

RJM tests its own combined coal / biomass nozzles on a large utility furnace in the UK.


RJM pioneers research into the detailed chemistry around biomass combustion and biomass co-firing, in conjunction with two university research departments.

2010 - 2011

RJM wins multi-million contract to install its own Ultra-Low NOx Burners on Unit 3 at SSE Ferrybridge.

RJM develops and manufactures its own range of products, ranging from single component replacements to entire Ultra-Low NOx Burner assemblies.


RJM launches industrial placement trainee scheme, aimed at engineering undergraduates.

2006 - 2008

Client list and turnover grow strongly in line with RJM's reputation.


MBO of RJM's European subsidiary completed.


RJM ceases trading in the USA.


European subsidiary of RJM Corporation opens, based in Winchester, UK.


RJM Corporation, the original RJM business, founded in Connecticut, USA.