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Nitrogen oxides (NOx) include various compounds such as dinitrogen monoxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2), dinitrogen trioxide (N2O3), dinitrogen tetroxide (N2O4), and dinitrogen pentoxide (N2O5), among others. Except for nitrogen dioxide, all other nitrogen oxides are highly unstable; they transform into nitrogen dioxide and nitric oxide when exposed to light, moisture, or heat, with nitric oxide subsequently turning back into nitrogen dioxide. All nitrogen oxides possess varying degrees of toxicity. Nitrogen oxides enter deep into the lungs through breathing, and can cause bronchitis or emphysema (see the effects of nitrogen oxide pollution on health). NOx can also undergo photochemical reactions with other pollutants in the atmosphere to form photochemical smog pollution. In the atmosphere, N2O is oxidized to nitric acid, which is one of the causes of acid rain. N2O can also reduce ozone in the stratosphere, thereby increasing the amount of ultraviolet radiation that reaches Earth. For example, various nitric acid industries generate large amounts of process exhaust gas containing NOx, and most of them are equipped with denitration systems. Nitric acid is widely used in industries such as electroplating; it is primarily employed for removing plating from defective parts or electroplating fixtures, as well as for the chemical polishing of aluminum alloy and copper alloy components. During use, nitric acid decomposes to produce large amounts of NO and NO2 – brownish-yellow gases known as nitrogen oxides (NOX). These gases are highly toxic and extremely corrosive. Due to its unique chemical properties, this type of yellow smoke is difficult to treat. As environmental requirements for electroplating become increasingly strict, the yellow smoke generated by nitric acid severely affects the factory environment and workers’ health. Some environmental engineering companies use a series connection of spray absorption towers in their designs, but yellow smoke still appears at the emission outlets. Other companies avoid the use of nitric acid in their processes and employ nitric acid-free additives to prevent the formation of yellow smoke; however, these specialized additives are expensive, costing between 30 and 50 yuan per kilogram, which significantly increases the production costs for these companies. Moreover, nitric acid-free additives are highly sensitive to the chemical composition of metal materials, and thus not suitable for all types of materials. Nitrogen oxides and yellow smoke are highly toxic exhaust gases; among various types of exhaust gas pollutants, NOx is the most difficult to treat and is a major culprit in air pollution. If not effectively controlled, it not only poses a serious threat to the health of operators and the environment of the factory area, but also causes environmental pollution by spreading with the wind, affecting the lives of local residents and the ecological environment. Therefore, it is imperative and urgent to manage nitrogen oxides. The generation of nitrogen oxides and yellow smoke is inevitable. The various methods currently used in the market, such as selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), adsorption, photocatalytic oxidation, electron beam irradiation, biochemical methods, and low-temperature plasma technology, all have certain drawbacks and limitations. They may be affected by temperature controls, involve high treatment costs, cause secondary pollution, or present difficulties in transporting the raw materials required for treatment. In response to this challenge, our company has developed a technical product designed to remove nitrogen oxides and yellow smoke caused by nitric acid. This product can **improve the environment; it is able to turn nitrogen oxides and yellow smoke into white smoke in just minutes. It has been successfully applied in various engineering projects, with actual removal rates of 99% or higher. It is known as the \"ultimate solution for eliminating nitrogen oxides and yellow smoke\", a \"miracle tool for dealing with nitrogen oxides and yellow smoke\", and an \"expert in denitration\". The remover can undergo chemical reactions with nitrogen oxides and yellow smoke to produce harmless gases such as nitrogen and water vapor, thereby eliminating the risk of yellow smoke at its source. Both NO2 and NO can be absorbed by the yellow smoke remover, preventing the formation of any new yellow smoke. This treatment method does not require the addition of new equipment, is unaffected by factors such as ambient temperature, has a mature manufacturing process, and is easy to transport. The yellow smoke remover can be added to the existing sodium hydroxide solution storage tank; it has a wide range of available raw materials, results in low overall costs for the reagent, and exhibits high efficiency in removing yellow smoke, making it feasible for practical application and widespread use. Our nitrogen oxides and yellow smoke removers are suitable for various industries that generate nitrogen oxides and yellow smoke, such as electroplating, thermal power generation, coal chemical industry, steel manufacturing, cement production, ceramics industry, nitric acid production, aluminum oxidation, photovoltaic industry, pickling processes, solar energy sector, boilers, furnaces, mining industry, and washing operations. During the research, development, and manufacturing of this product, we ensure high quality while also improving manufacturing processes, increasing efficiency, reducing waste, and strictly controlling costs. As a result, we have a significant price advantage over other domestic manufacturers. Please feel free to call us (Chen: 15989792484; same number on WeChat) to discuss or inquire further! Appearance: Transparent or slightly yellow solution. PH: Alkaline. Active ingredient content: greater than 40%. Removal rate: greater than 99%. Packaging: 25 kg/barrel or 1 ton/barrel. Note: 1. This product is non-toxic, harmless, and non-corrosive, but it is not edible. If it accidentally comes into contact with the skin, glasses, etc. during use, please wash it thoroughly with clean water. If ingested accidentally, seek medical attention immediately. 2. Nitric acid is a high-risk substance; it is necessary to ensure that there are no other additives in the tank solution before adding this product, and no other products should be added after its addition, in order to avoid inefficacy and danger. If other items are added, testing must be conducted before using this product. Recommendation: Using this product in conjunction with a secondary gas collection tower yields better results. An appropriate amount of urea or ammonium bicarbonate is added to the primary gas collection tower, while NaOH is added to the final gas collection tower to maintain a pH of around 10; these substances are replaced once a month. *Without the consent of our company’s technical staff, this product shall not be subjected to experimental analysis or mixed with other chemical liquids; in the event of any accidents resulting therefrom, our company shall bear no responsibility. https://attach01.hcbbs.com/forum/201902/20/001312zqj3jq1zz44j4ub8.jpg https://attach01.hcbbs.com/forum/201902/20/001332akkw44qcsmuzlv30.jpg https://attach01.hcbbs.com/forum/201902/20/001319muroocfb6bu2oxy6.jpg