Strip produced at PZPS is used in exhaust gas catalytic converters

Diesel engine exhaust gases contain many harmful substances, among which benzopyrene — a hydrocarbon formed during incomplete combustion of organic compounds — poses a particular danger. It is one of the most widespread and dangerous carcinogens.

To combat such pollutants, various exhaust gas cleaning technologies are being developed, among which catalysts occupy a key place. This article examines the role of fechral alloy strip produced at PZPS in modern exhaust gas converters.

Harmful substances in diesel engine exhaust gases

Diesel vehicle exhaust gases contain many harmful substances, including hydrocarbons, nitrogen oxides (NOx), carbon monoxide (CO), and particulate matter. Benzopyrene, formed as a result of incomplete combustion of hydrocarbons, poses a particular health threat. The main causes of its appearance include:

• incorrect air-to-fuel ratio in the combustion chamber;
• insufficient fuel combustion temperature;
• poor fuel quality.

Release of benzopyrene during fuel combustion is dangerous for the environment and human health. It accumulates in soil, water, and air, and also enters the human body through the respiratory tract and skin. In high concentrations benzopyrene can cause serious diseases.

Catalysts for cleaning exhaust gases and reducing benzopyrene emissions

To reduce emissions of benzopyrene and other harmful substances, it is necessary to ensure complete fuel combustion and control its quality. Exhaust gas converters play an important role in this process. Platinum-based catalysts promote complete oxidation of harmful substances to carbon dioxide and water. The principle of their operation is as follows:

1. Exhaust gases enter the catalyst.
2. Inside the catalyst the gases pass through a layer containing platinum.
3. Platinum accelerates chemical reactions, converting harmful substances into less dangerous compounds.
4. Cleaned exhaust gases leave the catalyst and enter the atmosphere.

It is especially important to use catalysts in both open-pit and underground mining, because at mining enterprises accumulation of harmful substances is particularly dangerous for people’s life and health.

Besides catalysts, there are other exhaust gas cleaning technologies, including particulate filters and exhaust gas recirculation (EGR) systems. However, platinum-based catalysts remain one of the most effective means of cleaning exhaust gases and are widely used in modern diesel engines.

Fechral as a material for catalysts

Fechral, an alloy with high electrical resistance and elevated heat resistance, is an optimal material for creating diesel engine filters. Fechral strips produced at PZPS are widely used in exhaust gas catalysts. The main fechral grades used for these purposes are Kh15Yu5, Kh23Yu5, and Kh23Yu5T.

Advantages of using fechral:

1. Heat resistance — the ability to withstand high temperatures reaching several hundred degrees Celsius makes fechral an ideal material for diesel engine operating conditions.
2. High electrical resistance — makes it possible to use fechral to heat exhaust gases, which contributes to effective operation of the catalytic converter.
3. Strength and durability — fechral has high strength and corrosion resistance, ensuring filter longevity.
4. Compatibility with catalysts — fechral does not react with catalyst components such as platinum or palladium, allowing effective interaction with them to clean exhaust gases.
5. Economic efficiency — using fechral is economically advantageous thanks to its availability and excellent service characteristics.

Using fechral to produce strips applied in exhaust gas catalysts is an important step toward reducing harmful diesel engine emissions. Thanks to its unique properties, fechral ensures effective and durable operation of catalytic converters, helping protect the environment and people’s health. In modern conditions where environmental safety is a priority, such technologies and materials play a key role in developing and improving exhaust gas cleaning systems.

To order fechral, other precision alloys, or production services, call +7 (812) 740-76-87, +7 (812) 740-76-74, or +7 (812) 740-76-69, or leave requests on the website. Our managers will contact you and answer your questions in detail.

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