Enhanced hydrated lime — A simple solution for acid gas compliance

The US landscape of environmental regulations is complex and continues to evolve requiring more stringent acid gas emission limits than ever. Current regulations include acid gas emission requirements via the Portland Cement NESHAP, consent decrees and revised operating permits where operational modifications are made requiring additional acid gas removal. As a result of the need to comply with these increasingly stringent acid gas emission limits, there is a growing desire for a relatively simple solution. Dry Sorbent Injection (DSI) technology offers a low capital cost solution with a relatively small equipment footprint, low power consumption and ease of retrofit to a majority of existing facilities. As DSI technology has matured the systems have become more reliable and advancements in calcium based sorbents have provided new compliance solutions that weren't available in years past. The optimization of the physical properties of enhanced hydrated lime products have demonstrated upwards of 90% SO₂ and 95+% HCl reduction with DSI technology over a range of applications and have been consistently successful achieving cement plant's acid gas removal needs to meet their regulatory requirements.