Spent Acid Regeneration Units (SARUs) thermally decompose spent sulphuric acid into high-temperature gas, which is recovered in a waste heat boiler generating high-pressure steam.
Thermal Systems supplies WHBs for SARU service — including the world's largest operating installation, on a 1,000 TPD SARU.
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- Waste heat boilers: In some cases, the heat generated during the regeneration process may be sufficient to generate steam, which can be used for other purposes such as heating or power generation. Waste heat boilers can be used to capture this steam and put it to use.
- Recuperators: Recuperators are heat recovery devices that use a heat-conducting material, such as metal, to transfer heat from the outgoing regenerated acid to the incoming spent acid.
The use of heat recovery in SARUs can greatly improve the efficiency of the regeneration process, reducing energy consumption and costs. It also helps to minimize the impact of the regeneration process on the environment by reducing the amount of heat that must be dissipated.
