Selecting the right dust collection bags is essential as it directly impacts the efficiency of the dust collector. Choosing wisely involves considering several factors such as gas temperature, humidity and chemical composition, particle size, filtration velocity, dust concentration, and cleaning methods. For high-temperature applications, specialized dust collector bags are often necessary to withstand harsh conditions like high temperatures, humidity, corrosive chemicals, and abrasive particles.
In steel plants, particularly those dealing with sintering, the environment is heavily laden with dust, including toxic compounds like sulfur oxides, hydrides, carbon monoxides, nitrogen oxides, and various organic derivatives. Dry purification using high-temperature dust collector filter bags has proven effective in reducing environmental pollution and saving energy. However, specific requirements vary depending on the equipment—converters, blast furnaces, or sintering plants. For instance, sintering flue gas requires filter bags that can endure temperatures between 150-260°C. Commonly used materials include fluoropolymer-based filter bags, while blast furnace and converter systems may require basalt fiber-based high-temperature filter bags.
Waste incinerators rely on dust removal bags to handle flue gases containing carcinogenic and teratogenic dioxins, often produced when burning plastics like bags and food containers. To combat this, PTFE-based dust removal bags, known for their resistance to high temperatures, corrosion, and hydrolysis, are frequently employed.
Cement dryers produce significant amounts of hot dust-laden gases. These gases, along with pollutants like sulfur dioxide, nitrogen oxides, carbon dioxide, and hydrofluoric acid, can harm both human health and ecosystems. Current practices favor coated acrylic bags due to their superior corrosion resistance.
Thermal power plants, major contributors to air pollution, require high-temperature dust collector filter bags capable of handling sulfur dioxide, nitrogen oxides, and particulate matter. PPS (polyphenylene sulfide) filter bags or their composites are popular choices thanks to their excellent chemical stability, heat tolerance, and durability.
Mining operations generate substantial amounts of dust at ambient temperatures, making polyester needle-punched felt bags an ideal choice due to their non-corrosive nature.
Boilers produce highly corrosive flue gases at temperatures ranging from 150-300°C. For these conditions, Flumes dust removal bags and PPS dust removal bags are typically recommended.
Selecting the appropriate dust removal bags is a critical decision that must align with the specific operational conditions and challenges faced. Each industrial sector presents unique demands, requiring tailored solutions to ensure optimal performance and longevity of dust collection systems.
NINGBO DOTEC produces various expansion valves in China for many years.
Options:
1. Thermal Expansion Valve (Thermostatic Expansion Valve)
2. Electronic Expansion Valve
3. Automatic Expansion Valve
Thermal Expansion Valve, Electronic Expansion Valve, Automatic Expansion Valve, Thermostatic Expansion Valve
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