Exhaust gas treatment system

• US 6,805,845 B1
• Filed: 09/05/2000
• Issued: 10/19/2004
• Est. Priority Date: 09/06/1999
• Status: Expired due to Fees

• Current Assignee: Taikisha Limited
• Original Assignee: Taikisha Limited
• Inventors: Maekawa, Teisuke
• Primary Examiner(s): ELVE, MARIA ALEXANDRA
• Application Number:
  US09/654,820
• Time in Patent Office: 1,505 Days
• Field of Search: 422/177, 422/190, 422/199, 422/244, 60/393.4, 602/72, 60/390.1, 60/390.7
• US Class Current: 422/177
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2257/704 Solvents not covered by groups B01D2257/702 - B01D2257/7027
• CPC Class Codes: B01D 2258/0216 from CVD treatment or semi-conductor manufacturing
• CPC Class Codes: B01D 2258/0258 from painting equipments or paint drying installations
• CPC Class Codes: B01D 2259/4009 using hot gas
• CPC Class Codes: B01D 53/06 with moving adsorbents, e.g. rotating beds B01D53/025 takes precedence
• CPC Class Codes: B01D 53/44 Organic components
• CPC Class Codes: F02C 3/20 using a special fuel, oxidant, or dilution fluid to generate the combustion products

Abstract

An exhaust gas treatment system includes a condensing device for condensing an organic component contained in exhaust gas to be treated so as to produce condensed gas with an enhanced organic component concentration, a gas turbine for receiving the condensed gas from the condenser device as oxygen-containing combustion gas and then generating power, and a generator operable to receive the power from the gas turbine for generating electric power.

Claims

1. An exhaust gas treatment system comprising:

a condensing device for condensing an organic component contained in exhaust gas to be treated so as to produce condensed gas with an enhanced organic component concentration;

a gas turbine for receiving the condensed gas from the condenser device as oxygen-containing combustion gas and then generating power; and

a generator operable to receive the power from the gas turbine for generating electric power,

wherein the condensing device comprises an adsorbing-desorbing device by effecting an adsorbing step for adsorbing the organic component of the exhaust gas onto an adsorbent layer by causing the exhaust gas to pass the adsorbent layer and a desorbing step for desorbing the adsorbed organic component into a desorbing gas, which is smaller in amount than the exhaust gas, by causing desorbing gas to pass the adsorbent layer after the adsorbing step, the device effecting the adsorbing step and the desorbing step for a plurality of cycles, so that the desorbing gas delivered from the adsorbent layer during the desorbing step is collected as the condensed gas to be discharged from the condensing device.

2. The exhaust gas treatment system according to claim 1, wherein the adsorbing-desorbing condensing device includes a sorting means for sorting the desorbing gas delivered from the adsorbent layer during the desorbing step between an earlier passage gas which passed the adsorbent layer at an earlier stage of the desorbing step and a later passage gas which passed the adsorbent layer at a later stage of the desorbing step and for subsequently causing the earlier gas, as an additional portion of the exhaust gas, to pass the adsorbent layer again at a subsequent adsorbing step while allowing the later passage gas to be discharged directly as the condensed gas.

3. The exhaust gas treatment system according to claim 2, wherein the adsorbing-desorbing device comprises a rotary adsorbing-desorbing device.

5. The exhaust gas treatment system according to claim 1, wherein the condensing device is capable of providing a concentration rate of approximately 30 times or more of the organic component in the exhaust gas.

6. The exhaust gas treatment system according to claim 2, wherein the condensing device is capable of providing a concentration rate of approximately 30 times or more of the organic component in the exhaust gas.

4. An exhaust gas treatment system comprising:

a condensing device for condensing an organic component contained in exhaust gas to be treated so as to produce condensed gas with an enhanced organic component concentration;

a gas turbine for receiving the condensed gas from the condenser device as oxygen-containing combustion gas and then generating power; and

a generator operable to receive the power from the gas turbine for generating electric power,

wherein the condensing device is capable of providing a concentration rate of approximately 30 times or more of the organic component in the exhaust gas.