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Paper Mill Pulper Waste to Energy Incineration Plant

NaHCO3
Active Carbon / Lignite

Technical Sodium Bicarbonate and Activated Carbon/Lignite Coke for Paper Mill Pulper Waste to Energy Incineration Plants

Q: Why are technical grade sodium bicarbonate and activated carbon/lignite coke used for the treatment of flue gases generated during the combustion of waste from paper mill pulper?

During paper recycling, a non-recyclable residue known as 'pulper waste' is generated, composed of plastics, metals, and other substances. The most common method to treat these materials is disposal through incinerators or waste-to-energy plants. However, this process results in the release of pollutants from the waste, producing flue gases containing harmful acids such as Sulfur Oxides (SOx), Hydrochloric Acid (HCl), and Hydrofluoric Acid (HF), as well as heavy metals like Lead (Pb), Cadmium (Cd), Mercury (Hg), and other toxic elements harmful to the environment. For this reason, waste management facilities must adopt systems to reduce emissions by implementing flue gas purification processes. These systems utilize technical grade sodium bicarbonate, which neutralizes the acidic components of the flue gases, and activated carbon/lignite coke, which is effective in capturing hazardous suspended substances like heavy metals.

Paper recycling generates non-recyclable waste, pulper waste, which also contains pollutants such as plastics and metals. This material is primarily treated in incinerators or waste-to-energy plants, which release pollutants such as sulfur oxides (SOx), hydrochloric acid (HCl), hydrofluoric acid (HF), and heavy metals that are harmful to the environment. To reduce emissions, plants adopt flue gas purification systems, filtering them with chemical reagents based on the composition of the pollutants and local regulations.

Solution with Technical Grade Sodium Bicarbonate plus Active Carbon or Lignite Coke

One of the most common solutions is the combined use of technical sodium bicarbonate, whose function is to neutralize the acids produced by combustion, together with activated carbon or lignite coke, useful in capturing and eliminating heavy metal particles and other substances present in suspension in the fumes.

This type of plant features a two-station filtering system, which removes oxides, acids, and metals using a mill for grinding and dispensing the technical sodium bicarbonate and a doser for feeding activated carbon or lignite coke into the line.

Design and Realization

MetalTek specializes in the design and manufacture of high-quality mills and feeders with top-quality components. Our equipment is available in various configurations, and upon request, we can design customized loading and injection solutions for every need.

Metaltek Mills Specialized for Technical Grade Sodium Bicarbonate Metaltek Dosers Specialized for Active Carbon or Lignite Coke

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Metaltek Services: Assistance, Maintenance and Monitoring

Assistance, Maintenance and Monitoring Services on existing systems

Metaltek, with thirty years of experience in the sector, supplies cutting-edge systems for the purification of industrial fumes, designed to guarantee reliability, continuous efficiency and compliance with environmental regulations.

Thanks to our team of highly specialized consultants and designers, we create customized solutions that optimize the use of sodium bicarbonate, activated carbon, and lignite coke , reducing operating costs and waste. We offer timely assistance, professional analyses, teams equipped to work at heights and in confined spaces, and a constantly stocked spare parts warehouse. The quality and robustness of our systems, combined with global technical support and our Tek Lab analysis service make them ideal for flue gas purification where precision, reliability, and service continuity are essential.

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Tek Lab by Metaltek is a leader in the analysis of industrial fumes and residues. A cutting-edge technology to detect and address issues with overdosing or problems related to excess acids, dioxins, or other harmful compounds. It offers both on-premises analysis and on-site monitoring and analysis with its mobile laboratory.

Quality Products and exclusive Metaltek Services: a benchmark, the state of the art of Paper Mill Pulper Waste to Energy Incineration Plants

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Flue Gas Cleaning with Technical Grade Sodium Bicarbonate and Active Carbon or Lignite Coke

FAQ

What are the pollutants generated during the disposal of paper mill pulper waste?

Substances such as chemicals used for bleaching fibers, which contain sulfur and nitrogen, can emit Sulfur Oxides (SOx) during combustion. Additionally, materials like Hydrochloric Acid (HCl) and Hydrofluoric Acid (HF) can be released from residues of plastic materials such as PVC. Heavy metals like Lead (Pb), Cadmium (Cd), and Mercury (Hg) are also commonly found, often originating from inks used in printing processes.

Why are technical grade sodium bicarbonate and activated carbon/lignite coke used for the treatment of flue gases generated during the combustion of waste from paper mill pulper?

During paper recycling, a non-recyclable residue known as "pulper waste" is generated, composed of plastics, metals, and other substances. The most common method to treat these materials is disposal through incinerators or waste-to-energy plants. However, this process results in the release of pollutants from the waste, producing flue gases containing harmful acids such as Sulfur Oxides (SOx), Hydrochloric Acid (HCl), and Hydrofluoric Acid (HF), as well as heavy metals like Lead (Pb), Cadmium (Cd), Mercury (Hg), and other toxic elements harmful to the environment. For this reason, waste management facilities must adopt systems to reduce emissions by implementing flue gas purification processes. These systems utilize technical grade sodium bicarbonate, which neutralizes the acidic components of the flue gases, and activated carbon/lignite coke, which is effective in capturing hazardous suspended substances like heavy metals.

What is the purpose of sodium bicarbonate in the treatment of flue gases from paper mill pulper waste?

Sodium bicarbonate chemically reacts with the acids contained in the flue gases generated during the combustion of paper mill pulper waste (e.g., HCl, SOx), converting them into harmless solid salts, such as sodium sulfate or sodium chloride, even at relatively high temperatures. This process significantly reduces the acidity of the exhaust gases. Additionally, sodium bicarbonate can be used in combination with other chemical compounds and filtration systems, such as activated carbon/lignite coke, to address both acidic substances and other pollutants.

What is the role of activated carbon and lignite coke in the treatment of flue gases from paper mill pulper waste?

Activated carbon and lignite coke are particularly effective in removing substances like mercury and other heavy metals present in the flue gases derived from the combustion of paper mill pulper waste. Activated carbon and lignite coke are essential for tackling pollutants that require targeted treatment, as opposed to the broader neutralization provided by agents like sodium bicarbonate.

What is the difference between activated carbon and lignite coke?

Activated carbon and lignite coke are both used in flue gas purification but differ in properties and applications. Activated carbon is highly effective due to its superior adsorption capacity, stemming from its porous structure and large surface area, making it ideal for absorbing a wide range of gases and organic vapors in flue gases. Lignite coke, on the other hand, is less versatile and is primarily used in specific operating conditions, particularly at temperatures below 200°C, where it proves effective in capturing contaminants. Its competitive price compared to activated carbon makes it an attractive alternative for facilities operating within a favorable temperature range.

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