Standards and regulations
MoEF emission norms (India)
Also known as MoEF, Ministry of Environment Forest and Climate Change, CPCB emission norms, Indian emission norms.
MoEF emission norms — issued by India's Ministry of Environment, Forest and Climate Change (MoEFCC) and enforced via the Central Pollution Control Board (CPCB) — set Indian emission limits for particulate matter, SO₂, NOx and mercury from coal-fired power plants, cement plants, refining, fertiliser and other industrial sources.
The 2015 thermal power plant amendment
The 2015 amendment substantially tightened particulate and NOx limits for Indian coal-fired thermal power stations. Implementation deadlines have been extended several times (to 2024–2027 for most categories) but the long-term direction is toward European-style limits.
Implications for sonic-horn market
The tightening Indian particulate and NOx limits are driving retrofit investment in ESP upgrades, FGD installation and SCR installation on the existing 210 GW coal-fired fleet. Sonic horns are part of the retrofit toolkit on these projects — particularly on legacy ESPs being upgraded to meet the new limits.
Related terms
Related terms
- Electrostatic precipitatorAn ESP removes particulate from flue gas by charging dust and collecting it on plate electrodes. Sonic horns are widely used to dislodge ash from plates and to keep hoppers from bridging.
- Selective Catalytic ReductionSCR is the dominant NOx-control technology on industrial combustion plant. Ammonia is injected upstream of a catalyst that converts NOx to nitrogen and water.
- Pulverised-coal boilerA pulverised-coal boiler grinds coal to fine powder and injects it through burners into a furnace. The dominant utility-scale boiler design worldwide.