Marine exhaust gas cleaning system
AssigneeMarine Exhaust Solutions Inc.
InventorsGarth E. Jenkins, Kiley G. Sampson, David S. Dumont, Seyed Milad Mousavi
Life of this patent
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Abstract
A marine exhaust gas scrubbing device including an enclosure having a first end and a second end, an exhaust gas inlet, at least one quencher, at least one pre-treater, at least one venturi component including a venturi inlet and a venturi outlet, an impingement basket, at least one demister, an exhaust gas outlet, and a receiver, and a process for scrubbing a marine exhaust gas including cooling the exhaust gas, pre-treating the exhaust gas, washing the exhaust gas, mixing the exhaust gas and exhausting the scrubbed exhaust gas.
Claims24
A marine exhaust gas scrubbing device comprising:
- a) an enclosure having a first end and a second end;
- b) an exhaust gas inlet proximate said first end for accepting a high temperature exhaust gas comprising sulfur dioxide and particulate matter;
- c) at least one quencher proximate the exhaust gas inlet for cooling the high temperature exhaust gas with at least one quenching fluid to give a cooled exhaust gas;
- d) at least one pre-treater for pre-treating the cooled exhaust gas with at least one pre-treating fluid to give a pre-treated exhaust gas;
- e) at least one venturi component comprising a venturi inlet for accepting the pre-treated exhaust gas and a venturi outlet for washing the pre-treated exhaust gas with at least one washing fluid to give a washed exhaust gas containing a plurality of washing fluid droplets and conveying the washed exhaust gas to the venturi outlet;
- f) an impingement basket proximate the venturi outlet for providing additional mixing of the washed exhaust gas with the washing fluid;
- g) at least one demister for removing the plurality of washing fluid droplets from the washed exhaust gas to form a demisted exhaust gas;
- h) an exhaust gas outlet at said second end for exhausting said demisted exhaust gas;
- and
- i) a receiver for receiving the at least one quenching fluid, the at least one pre-treating fluid and the at least one washing fluid.
The device of claim two wherein the at least one quenching fluid, the at least one pre-treating fluid and the at least one washing fluid comprise an aqueous alkali metal hydroxide solution selected from the group consisting of lithium hydroxide, sodium hydroxide, potassium hydroxide, an aqueous alkaline earth metal hydroxide solution selected from calcium hydroxide, magnesium hydroxide, and combinations thereof.
A process for scrubbing marine exhaust gas comprising the steps of:
- a) providing a high temperature exhaust gas comprising sulfur dioxide and particulate matter;
- b) cooling the high temperature exhaust gas using a quenching fluid to give a cooled exhaust gas;
- c) pre-treating the cooled exhaust gas using a pre-treating fluid to give a pre-treated exhaust gas;
- d) washing the pre-treated exhaust gas using at least one venturi component comprising a venturi inlet for accepting the pre-treated exhaust gas and a venturi outlet for washing the pre-treated exhaust gas with a washing fluid to give a washed exhaust gas containing a plurality of washing fluid droplets and conveying the washed exhaust gas to the venturi outlet;
- e) mixing the washed exhaust gas with the washing fluid using an impingement basket;
- f) removing the plurality of washing fluid droplets from the washed exhaust gas to form a demisted exhaust gas;
- g) exhausting the demisted exhaust gas;
- and
- h) capturing the quenching fluid, the pre-treating fluid, and the washing fluid.
Dependencies are inferred from the claim text.