Home / Air purification / ECOFILT Flue Gas Filter
02 • Air purification • At source
Clean air at the source of pollution
ECOFILT is a patented, filterless flue-gas filtration system that captures particulates and pollutants from chimneys and stacks before they reach the air people breathe.
The challenge
The smoke from one chimney is breathed by a whole neighbourhood
Our answer: ECOFILT cleans flue gas at the stack with a patented, filterless design that is easy to retrofit.
Why choose it
Key benefits
Stops pollution at the chimney
Cleans flue gas before release, which is far easier than cleaning the air after pollution has spread.
Filterless design
No filter bags to clog, change or dispose of, which keeps running costs and downtime low.
Helps you meet emission norms
Supports industries, incinerators and crematoria in meeting the particulate limits set by CPCB and the State Pollution Control Boards.
Retrofits to existing stacks
Fits onto existing chimneys and exhaust lines without rebuilding the process.
How it works
How ECOFILT cleans flue gas
Exhaust from the process is drawn through ECOFILT, where particulates and pollutants are captured before the clean gas leaves the stack.
Ideal for
Where it is used
View full technical specifications
| Technology | Patented filterless flue-gas filtration (Indian Patent No. 422515) |
| Pollutants addressed | Particulate matter, smoke and associated pollutants in flue gas |
| Unit size | About 3 ft × 3 ft × 8.5 ft |
| Weight | About 250 kg |
| Power | 240 V single phase |
| Installation | Retrofit to existing stacks; number of units sized to flue-gas flow |
| By-product | Collected dust and carbon, studied for reuse as filtration media |
Every site needs a short pre-engineering survey of flue-gas flow and temperature before we confirm the number of units.
See it in action
Photos and video
Impact parameters
Impact we measure and report
Every installation is tracked against clear, verifiable parameters so you can report outcomes to regulators, boards and CSR committees.
Particulates captured
Kilograms of dust and carbon collected per month.
Stack emission levels
Particulate concentration at the stack before and after ECOFILT.
Compliance status
Readings against CPCB and State Pollution Control Board limits for your sector.
Running cost
Power use per unit, with no filter bags to buy or dispose of.
Policy & SDG alignment
Aligned with national priorities and global goals
UN Sustainable Development Goals
Central government policy
National Clean Air Programme (NCAP)
Cuts emissions at industrial and combustion sources in non-attainment cities.
Air (Prevention and Control of Pollution) Act, 1981
Helps industries meet the emission limits set under the Act by CPCB and SPCBs.
Environment (Protection) Rules, 1986
Supports compliance with sector-specific emission standards.
Prime Minister’s vision
Mission LiFE
Cleaner production and responsible industry.
Net Zero by 2070
Lower-emission industrial growth.
Make in India
Patented Indian pollution-control technology.
CSR alignment
Schedule VII (iv)
Environmental sustainability and ecological balance.
Schedule VII (i)
Preventive health care, through cleaner air for nearby communities.
Testimonials
What our clients say
“Our municipal crematorium is located near dense residential buildings, and we faced constant complaints about black soot, flying ash and odour. Installing ECOFILT downstream of our flue duct eliminated visible emissions. The wet quench and corona discharge stages capture fine carbon particles before they can escape the chimney.”
Crematorium Superintendent, City Municipal Corporation
“Traditional bag filters choked and failed repeatedly due to sticky condensed tars and hot spark carryover. Retrofitting ECOFILT’s multi-stage filtration solved our compliance problems. Stack emission tests consistently show particulate levels within norms, with no filter blinding and minimal maintenance downtime.”
EHS Lead, Heavy Engineering & Forging Works
Frequently asked questions
Questions about ECOFILT Flue Gas Filter
What does ECOFILT do?
ECOFILT cleans flue gas from stacks and chimneys, capturing particulate matter and smoke before the exhaust is released into the air.
What does filterless mean?
ECOFILT does not use fabric filter bags that clog and need replacing, which lowers maintenance, downtime and waste.
Can ECOFILT be fitted to an existing chimney?
Yes. It is retrofitted to existing stacks. A short site survey of flue-gas flow and temperature decides how many units are needed.
Which sectors use ECOFILT?
Industrial boilers and furnaces, Red and Orange category industries, incinerators, crematoria, foundries and kilns.
Get a proposal
Get an emission-control proposal
Tell us your process, fuel and stack details. We will arrange a pre-engineering survey and propose the right ECOFILT configuration.
- ✓ Pre-engineering site survey
- ✓ Unit count and layout
- ✓ Before and after emission testing
- ✓ CSR, NCAP and green fund guidance