{"id":321,"date":"2015-06-05T15:13:27","date_gmt":"2015-06-05T15:13:27","guid":{"rendered":"http:\/\/www.preferred-mfg.com\/blog\/?p=321"},"modified":"2015-06-05T15:13:52","modified_gmt":"2015-06-05T15:13:52","slug":"preferred-utilities-featured-in-todays-boiler-2","status":"publish","type":"post","link":"https:\/\/www.thepyroscope.com\/blog\/preferred-utilities-featured-in-todays-boiler-2\/","title":{"rendered":"NOx Emissions: Reduction Strategies"},"content":{"rendered":"

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The Spring 2015 edition of Today\u2019s Boiler<\/a> magazine published Dr. Jianhui Hong\u2019s article \u201cNOx Emissions Reduction Strategies.\u201d<\/strong> In the article Dr. Hong explains the importance of low NOx and provides solutions for complying with low NOx emissions regulations.<\/p>\n

He explains that \u201cNOx is a term used to include two important air pollutants: NO (nitric oxide) and NO\u2082 (nitrogen dioxide). These pollutants are sometimes called mono-nitrogen oxides\u2026NOx is a term used to include two important air pollutants: NO (nitric oxide) and NO\u2082 (nitrogen dioxide). These pollutants are sometimes called mono-nitrogen oxides.\u201d<\/p>\n

NOx gases are harmful in a number of ways. Exposure to NOx gases is harmful to human health by irritating the mucous membranes and penetrating the lungs, \u201ccausing oxidizing damage to the tissues.\u201d<\/p>\n

When NOx reacts with water or water vapor, \u201cit forms nitrous acid (HNO\u2082) and nitric acid (HNO\u2083). These acids in the rain can make \u2018acid rain.\u2019 Acid rain can damage plants and man-made structures such as buildings, bridges, and outdoor sculptures.\u201d<\/p>\n

In highly populated areas, \u201cNOx emissions from combustion processes are primarily in the form of NO. In the air, NO reacts with oxygen to produce NO\u2082. In the presence of sunlight, NOx can react with hydrocarbons, especially VOC (volatile organic compounds) in the air to form ground-level ozone, which is an important ingredient of smog. The reddish brown color of the hazes hanging over the skies of some major cities comes from NO\u2082 gas\u2026 It can cause irritation to eyes, noses, throats, and lungs. It can even cause asthma and other chronic lung diseases such as emphysema and chronic bronchitis.\u201d NOx can also combine with moisture in the air which \u201cinduces changes in phytoplankton and produces toxic brown or red algal blooms (i.e. \u201cred tides\u201d). The algal blooms can cause the death of other plants and marine animals in the water.<\/p>\n

Thermal NOx, Fuel NOx, and Prompt NOx create the conditions for NOx emission.<\/p>\n

Dr. Hong presented five solutions for the combustion community to reduce NOx emissions.<\/p>\n