Metal fabric filter

for harsh environmentsindustrialfor chemicals

Overview
NTE Process offers the Air Pollution Control range: a process-based technology that integrates dust filtration with emission control for industrial pneumatic conveying and process extraction applications. The solution addresses a wide spectrum of acid pollutants (SO2, SO3, HCl, HF), heavy metals (Hg, As) and dioxins in compliance with stringent regulations.

Key capabilities

• Combined dust filtration and harmful-emission control for pneumatic conveying and extraction systems.
• DSI (Dry Sorbent Injection) solutions using Eco-Lance® injection lances to reduce sorbent consumption.
• Customised bag and cartridge filtration units for high-temperature and high-humidity environments, including ATEX-capable configurations.

Dry Sorbent Injection (DSI)
The NTE Process DSI solution injects sorbents (e.g. hydrated lime, sodium bicarbonate, trona, activated carbon) from storage silos through dedicated injection lances positioned along the flue. Eco-Lance® injection lances improve sorbent distribution and can reduce sorbent consumption by up to 50%. Options include dosing, milling and conditioning units for sodium bicarbonate/trona and gravimetric micro-dosing with Venturi ejectors for activated carbon.

Services in preliminary design

• Technical consulting
• CFD modelling
• On-site testing with mobile units

Ashes and waste handling
NTE Process supplies integrated conveying and handling solutions for ashes and residue streams. Designs include options for filtration at elevated temperatures (above 350 °C) and adapted handling systems.

Filtration
Bag and cartridge filters are engineered for dry filtration of suspended solid particles from pneumatic transport or industrial processes requiring suction and particulate capture. Dust-laden air flows from the outside to the inside of the filter sleeves so particles are intercepted by the media and discharged to the hopper by reverse-jet cleaning. Primary filter cleaning is governed by differential pressure (delta P) to reduce compressed-air use; a time-based mode is available as backup. Construction materials and options include carbon steel and AISI, CE certification and ATEX compatibility.

Technical features / specifications

• Pollutants treated: SO2, SO3, HCl, HF, dioxins, heavy metals (Hg, As), particulate matter
• DSI technology with Eco-Lance® injection lances
• Sorbents: hydrated lime, sodium bicarbonate, trona, activated carbon
• Sorbent consumption reduction up to 50% with Eco-Lance®
• Continuous transfer from storage silos to injection lances along the flue
• Preparation systems: dosing unit, impact mill, dynamic classifier, injection fan; gravimetric micro-dosing and Venturi ejectors for activated carbon
• Filter types: tailor-made bag filters and cartridge filters
• Filter cleaning: reverse-jet pulse into hopper; delta P control with time-based backup
• Operation at high filtration temperatures (>350 °C)
• Materials and certifications: carbon steel, AISI options, CE certification, ATEX configurations available