NEWS RELEASE                                                                                                    APRIL 2014

$21 Billion NOx Reduction Market In 2015

The market for products and services to reduce NOx from stationary sources will exceed $21 billion next year.  This does not include products to prevent the formation of NOx e.g., low NOx burners. It does not include any mobile NOx reduction.  This is the conclusion of the McIlvaine Company in NOx Control World Market.

Stationary   NOx Reduction Revenues 2015


Revenues ($ Millions)



  • NOx housing, mixing and  injection   grid








Catalyst   regeneration



Monitoring   and outside service






The huge program to retrofit SCR on Chinese coal-fired boilers is the biggest driver behind the very large system market.  The system cost is greatly increased by the difficulty of inserting the systems into existing power plants.  A new catalytic filter would overcome the space problem and would also provide greater particulate reduction. This is also a new requirement in China.  In future years this new development could radically change the market.

The McIlvaine latest catalyst forecast is substantially lower than in the past. Chinese catalyst is not being replaced as anticipated. Furthermore, the catalyst regeneration market has started to have a negative impact on catalyst sales. Thirdly, catalyst is lasting longer than originally anticipated.  One reason is a new optimization strategy which offsets declining catalyst reactivity with greater reagent introduction.

Selective catalytic reduction systems as well as selective non-catalytic reduction systems require considerable initial and ongoing investment in monitoring and control.   Losses of ammonia to the atmosphere (ammonia slip) can cause a visible pollution problem as well as generating unnecessary reagent expenditures.

The majority of the systems worldwide use anhydrous ammonia.  However, China has shown a predilection for systems which convert urea to ammonia on site.  A third alternative used by some power plants is aqueous ammonia.  The diluted chemical has few safety issues compared to the undiluted compound.

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