My New Website

Proudly Serving our Customers since 1997

Spiritwood Station - TOP Plant of the Year 2015

DNX supplied the Ammonia Flow Control Units and the aqueous ammonia storage system for Green River Energy's Spiritwood Station Power Plant in Spiritwood North Dakota. Spiritwood Station Power Plant of Power Engineering Magazine’s Coal Top Plant of 2015. The 99 MW plant has achieved 60% Efficiency with its key industrial partners working at full capacity. By design, it could reach up 66% efficiency  as more steam users are added.

JW Turk - Best Power Project 2014, Plant of the Year 2013

DNX supplied the Ammonia Flow Control Units and the anhydrous ammonia storage system for Southwestern Electric Power Co.’s John W. Turk Power Plant in Hempstead County Arkansas. JW Turk was the winner of Power Engineering Magazine’s World’s Best Power Project in the coal category in 2014 and won POWER Magazine’s highest honor of Plant of the year in 2013. The 624 MW plant is the first plant in the United States to reduce Emissions of SO2, NOx, CO2,  mercury, and particulate matter through ultra-supercritical steam cycle technology. It also reduces production of solid waste, and reduces requirements for water, activated carbon, lime and ammonia. With these reductions from Ultra supercritical technology, Turk Power Plant is one of the most efficient coal plants in the country.

Prairie State Energy Campus - Top Plant October 2013

DNX supplied the AFCU’s for the Prairie State Energy Campus (PSEC) in Washington County, Illinois which was a POWER Magazine Top Plant in their October 2013 edition. Completed in 2012, the 1600 MW Plant is the largest coal-fired plant built in the U.S. in 30 years. PSEC will supply electricity to customers at more affordable rates and lower market fluctuations due to more than 30 years of coal reserves nearby. Babcock &Wilcox Co. manufactured PSEC’s two super critical coal fired steam generators.

Clinton Cogeneration Plant - Top Plant October 2010

DNX Engineers supplied the three Selective Non-Catalytic Reduction (SNCR) systems for the three CFB Boilers at ADM’s Clinton Cogeneration Plant. The plant in Clinton, IA was one of POWER Magazine’s Top Plants in their October 2010 edition. ADM uses seed corn mixed with coal to power their 180 MW plant. The plant is one of the largest corn wet mills in the world. By using corn, ADM is reducing their need for fossil fuels.

TS Power Plant - Top Plant October 2008

DNX used steam to evaporate the aqueous ammonia in the AECS for the TS Power Plant in Eureka County, Nevada , one of POWER Magazines Top Plants in their October 2008 edition. The TS Power Plant is a Coal-fired power plant owned by Newmont Mining Corporation. The plant is expected to   save $70 to $80 million a year in power costs. Newmont integrated the most advanced technology available in air quality control systems, digital architectures, and steam cycle design to be more efficient and cost effective.

High Desert Power Project - Plant of the Year 2003

DNX supplied the Ammonia Evaporation and Control Systems (AECS) for the three combined cycle units. High Desert Power Project in Victorville California was named POWER Magazine Plant of the Year in 2003. The development team won the award due to their ability to create an efficient plant with low environmental impact while staying within California’s strict regulations.


DNX Engineers, Ltd. provides engineering , design services and supplies engineered systems to the power and process industry. Our specialty being the control of Nitrogen Oxide (NOx) emissions.