Method of treating volatile organic compound and system for treating volatile organic compound using gas turbine
View Patent ↗The invention aims at making a volatile organic compound harmless, and in addition comprehensively improving the energy efficiency within a facility where treatment of the volatile organic compound is necessary. In the invention, in order to achieve this aim, a solution means is adopted where, a discharge gas containing a volatile organic compound is supplied to an adsorption apparatus to adsorb the volatile organic compound in an adsorbent. The volatile organic compound is desorbed from the adsorbent with pressurized steam and mixed with the steam. The steam containing the volatile organic compound is supplied, in the pressurized state, to the combustion chamber of a gas turbine, and burned together with a fuel gas.
1. A system for treating a volatile organic compound, comprising:
an adsorption apparatus including a housing, the adsorption apparatus configured and operable to adsorb a volatile organic compound contained in a gas to be treated in an adsorbent positioned in the housing, the adsorption device further configured and operable to desorb said volatile organic compound which is adsorbed in said adsorbent in the housing using steam under a pressurized environment, and to mix said volatile organic compound with said steam in said housing; and
a gas turbine which burns said steam mixed with said volatile organic compound in a combustion chamber.
2. A system for treating a volatile organic compound according to claim 1 , comprising a steam generation apparatus which generates steam using heat of combustion gas discharged from said gas turbine.
3. A system for treating a volatile organic compound according to claim 1 , further comprising a plurality of adsorption apparatuses, and a switching apparatus which switches said plurality of adsorption apparatuses so that adsorption of the volatile organic compound in the adsorbent, and desorption of the volatile organic compound from the adsorbent are alternately performed in parallel.
4. A system for treating a volatile organic compound according to claim 2 , further comprising a plurality of adsorption apparatuses, and a switching apparatus which switches said plurality of adsorption apparatuses so that adsorption of the volatile organic compound in the adsorbent, and desorption of the volatile organic compound from the adsorbent are alternately performed in parallel.
5. A system for treating a volatile organic compound according to claim 1 , further comprising a steam bypass control valve which adjusts a flow of steam supplied directly to a combustion chamber without passing through the adsorption apparatus.
6. A system for treating a volatile organic compound according to claim 1 , further comprising a pretreatment apparatus for concentrating a volatile organic compound contained in a gas to be treated, before adsorbing the volatile organic compound in the adsorbent.
7. A system for treating a volatile organic compound according to claim 6 , wherein said pretreatment apparatus is either one or both of; a concentrator which concentrates the volatile organic compound by desorbing the volatile organic compound from the adsorbent using a hot gas, and a dehumidifier which removes the water content from the gas to be treated, after adsorbing the volatile organic compound being a treatment object, in a predetermined adsorbent.
8. A system for treating a volatile organic compound according to claim 2 , wherein heating is performed using a hot gas, before desorbing the volatile organic compound in the adsorbent with steam, in the adsorption apparatus.
9. A system for treating a volatile organic compound according to claim 7 , wherein the hot gas is discharge gas of combustion gas which has been supplied for generating steam in the steam generator.
10. A system for treating a volatile organic compound according to claim 7 , wherein there is further provided a heating apparatus which heats air by heat exchange with discharge gas of combustion gas which has been supplied for generating steam, and the hot gas is hot air discharged from the heating apparatus.