Article: Injectology: cost comparison of dry injection of sodium bicarbonate and spray drier absorption with lime for the removal of HCl and S[O.sub.2] from flue gases.

Dry injection of sodium bicarbonate and spray drier Dabsorption with lime are both viable technologies for the removal of acid gases, such as HCl and S[O.sub.2], from flue gases. Both technologies might be evaluated when considering how to comply with Maximum Available Control Technology (MACT) standards for industrial commercial and institutional boilers and process heaters.

In this study, removal costs for both dry injection of sodium bicarbonate and spray drier absorption with lime were calculated per ton of HCl and S[O.sub.2], based on:

* Annualized equipment and engineering costs

* Direct installation costs

* Indirect installation ...

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