System for tail gas treatment of sulfur recovery units
AssigneeSaudi Arabian Oil Company
InventorsAadesh Harale, Mourad Younes, Maytham Musawi
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Abstract
A process for recovering sulfur from a tail gas stream comprising the steps of providing a tail gas stream to a chemical looping combustion (CLC) unit, the tail gas stream comprising a sulfide component, providing an oxygen carrier to the CLC unit, the oxygen carrier comprising a calcium carbonate, providing an air stream to the CLC unit, the air stream comprising oxygen, and reacting the sulfide component in the CLC unit with the calcium compound and the air to produce a product effluent, the product effluent comprising calcium sulfate.
Claims20
A process for recovering sulfur from a tail gas stream, the process comprising the steps of:
- providing a tail gas stream to a chemical looping combustion (CLC) unit, where the tail gas stream comprises a sulfide component;
- providing an oxygen carrier to the CLC unit, where the oxygen carrier comprises calcium carbonate;
- providing an air stream to the CLC unit, where the air stream comprises oxygen;
- and
- reacting the sulfide component in the CLC unit with the calcium carbonate and the oxygen to produce a product effluent, where the product effluent comprises calcium sulfate.
A system for recovering sulfur from a tail gas stream, the system comprising:
- an air reactor, where the air reactor operates at an air reaction temperature and an air reaction pressure, where the air reactor comprises a fluidized bed reactor, where the fluidized bed comprises calcium carbonate;
- an air reactor separator fluidly connected to the air reactor and a fuel reactor, where the air reactor separator comprises a solid-gas separation unit;
- the fuel reactor fluidly connected to the air reactor separator, where the fuel reactor operates at a fuel reaction temperature and fuel reaction pressure, where the fuel reactor comprises a fluidized bed reactor, where the fluidized bed comprises calcium carbonate;
- and
- a fuel reactor separator fluidly connected to the fuel reactor and the air reactor, where the fuel reactor separator comprises a solid-gas separation unit.
Dependencies are inferred from the claim text.