Solutions, Not Just Sorbents
Purchasing a consumable, such as a sorbent, is relatively simple; however, implementing a solution is never simple. Dry sorbent injection (DSI) and circulating dry scrubbers (CDS) offer solutions to reduce acid gas emissions as well as alleviate operational issues; however, implementing the holistic solution is never simple whether it ranges from system reliability, residue disposal impacts or simply passing a compliance test. Utilizing a resource that provides multi-functional expertise will minimize holistic costs and alleviate end user stress for implementing a solution. Over the past decade, DSI with hydrated lime has become commonplace for acid gas abatement (e.g. SO2, SO3, HCl, H2SO4, HF) and heavy metals abatement (e.g. arsenic, selenium) in industrial processes. Enhanced hydrated lime sorbents that are engineered to have higher pore volumes and surface areas are routinely applied to achieve high degrees of acid gas and heavy metal removal rates in exhaust gas streams. In addition to hydrated lime properties, many other system parameters influence sorbent performance. A solution-based approach integrates the use of best-in-class sorbents along with a technical team of applications experts to identify how best to apply sorbent, where best to inject, how to solve pneumatic conveying system challenges, and monitoring balance-of-plant issues. Today, many end users operate with minimal engineering staff. A solutions-based approach provides much needed expertise to end users to integrate systems and sorbents and to have someone to call on when problems arise. Given today’s climate with smaller plant personnel with frequent turnover coupled with more stringent acid gas compliance requirements your sorbent supplier has the potential to offer the most continuity with your DSI solution. In this paper, we will present several case studies in which bringing a solutions-based approach has resulted in compliance and/or financial benefits to end users.