US5167679A — Rotary gas treating apparatus

Claim 1

Independent Claim 189 words

A rotary gas treating apparatus comprising: a front-stage rotor and a rear-stage rotor each consisting essentially of an adsorbent material and allowing passage of gas along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; means for revolving said front-stage rotor in a revolving direction and said rear-stage rotor in a revolving direction; said adsorbing area of the front-stage rotor and said adsorbing area of the rear-stage rotor being disposed in order in a continuous treatment-object gas flow passage from an upstream side thereof; said desorbing area of the front-stage rotor and said desorbing area of said rear-stage rotor being disposed in recycling gas flow passages, respectively; a guide plate means for preventing said treatment-object gas from being deflected in said revolving directions of said front-stage and said rear-stage rotor, said guide plate means interposed between said adsorbing area of said front-stage rotor and said adsorbing area of said rear-stage rotor; wherein said revolving direction of said front-stage rotor and said revolving direction of said rear-stage rotor being reversed to each other.

Claim 2

Dependent Claim 189 words

A rotary gas treating apparatus comprising: a front-stage rotor and a rear-stage rotor each consisting essentially of an adsorbent material and allowing passage of gas along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; means for revolving said front-stage rotor in a revolving direction and said rear-stage rotor in a revolving direction; said adsorbing area of the front-stage rotor and said adsorbing area of the rear-stage rotor being disposed in order in a continuous treatment-object gas flow passage from an upstream side thereof; said desorbing area of the front-stage rotor and said desorbing area of said rear-stage rotor being disposed in recycling gas flow passages, respectively; a guide plate means for preventing said treatment-object gas from being deflected in said revolving directions of said front-stage and said rear-stage rotor, said guide plate means interposed between said adsorbing area of said front-stage rotor and said adsorbing area of said rear-stage rotor; wherein said revolving direction of said front-stage rotor and said revolving direction of said rear-stage rotor being reversed to each other.

Claim 3

Dependent Claim 33 words

A rotary gas treating apparatus, as defined in claim 1, wherein said adsorbing areas are disposed in substantially same regions in the rotational areas of said front-stage rotor and said rear-stage rotor, respectively.

Claim 4

Dependent Claim 74 words

A rotary gas treating apparatus, as defined in claim 1 or 2, wherein an intermediate area is provided in the rotational area of said rear-stage rotor, said intermediate area communicating with said treatment-object gas flow passage on the upstream side of said rear-stage rotor and communicating, on the downstream side of said rear-stage rotor, with a ventilation air flow passage sectioned from both said treatment-object gas flow passage and said recycling gas flow passage.

Claim 5

Dependent Claim 35 words

A rotary gas treating apparatus, as defined in claim 3, wherein said ventilation air flow passage has its downstream end connected with said treatment-object gas flow passage on the upstream side of said front-stage rotor.

Claim 6

Dependent Claim 43 words

A rotary gas treating apparatus, as defined in claim 4, wherein between said desorbing areas of the two rotors, there is interposed an intermediate heater for heating the recycling gas which temperature has dropped by its passage through the upstream side desorbing area.

Claim 7

Dependent Claim 120 words

A rotary gas treating apparatus comprising: a plurality of rotors consisting essentially of adsorbing material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing areas being disposed in order in a continuous treatment-object gas flow passage; said desorbing areas being disposed in recycling gas flow passages, respectively; said adsorbing material forming said rotors being fine activated carbon; and wherein said fine activated carbon forming a front-stage rotor positioned in said treatment-object gas flow passage has an average pore diameter greater than said fine activated carbon forming a rear-stage rotor positioned in said treatment-object gas flow passage.

Claim 8

Dependent Claim 120 words

A rotary gas treating apparatus comprising: a plurality of rotors consisting essentially of adsorbing material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing areas being disposed in order in a continuous treatment-object gas flow passage; said desorbing areas being disposed in recycling gas flow passages, respectively; said adsorbing material forming said rotors being fine activated carbon; and wherein said fine activated carbon forming a front-stage rotor positioned in said treatment-object gas flow passage has an average pore diameter greater than said fine activated carbon forming a rear-stage rotor positioned in said treatment-object gas flow passage.

Claim 9

Dependent Claim 29 words

A rotary gas treating apparatus, as defined in claim 6, wherein said recycling gas flow passages including said desorbing areas of the rotors are provided independently of each other.

Claim 10

Dependent Claim 33 words

A rotary gas treating apparatus, as defined in claim 7, wherein an intermediate heater for heating the recycling gas is provided on an upstream side of said desorbing area of the front-stage rotor.

Claim 11

Dependent Claim 157 words

A rotary gas treating apparatus comprising: a plurality of rotors consisting essentially of adsorbing material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing areas being disposed in order in a continuous treatment-object gas flow passage; said desorbing areas being disposed in recycling gas flow passages, respectively; wherein the adsorbing material forming a frontstage rotor positioned in said treatment-object gas flow passage has an average pore diameter greater than the adsorbing material forming a rear-stage rotor; wherein said adsorbing material forming said rotors comprises fine activated carbon; and wherein said average pore diameter of the fine activated carbon forming said front-stage rotor is more than 1.1 times greater than the average pore diameter of the fine activated carbon forming said rear-stage rotor and said average pore diameter is not greater than 35 A.

Claim 12

Dependent Claim 157 words

A rotary gas treating apparatus comprising: a plurality of rotors consisting essentially of adsorbing material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing areas being disposed in order in a continuous treatment-object gas flow passage; said desorbing areas being disposed in recycling gas flow passages, respectively; wherein the adsorbing material forming a frontstage rotor positioned in said treatment-object gas flow passage has an average pore diameter greater than the adsorbing material forming a rear-stage rotor; wherein said adsorbing material forming said rotors comprises fine activated carbon; and wherein said average pore diameter of the fine activated carbon forming said front-stage rotor is more than 1.1 times greater than the average pore diameter of the fine activated carbon forming said rear-stage rotor and said average pore diameter is not greater than 35 A.

Claim 13

Dependent Claim 50 words

A rotary gas treating apparatus, as defined in claim 9, wherein said average pore diameter of the fine activated carbon forming said front-stage rotor ranges approximately between 24A and 30A and said average pore diameter of the fine activated carbon forming said rear-stage rotor ranges approximately between 14A and 23A.

Claim 14

Dependent Claim 40 words

A rotary gas treating apparatus, as defined in claim 9, further comprising means for revolving said front-stage rotor and said rear-stage rotor wherein a revolving speed of said front-stage rotor is slower than a revolving speed of said rear-stage rotor.

Claim 15

Dependent Claim 34 words

A rotary gas treating apparatus, as defined in claim 11, wherein a ratio between said revolving speed of the front-stage rotor and said revolving speed of the rear-stage rotor ranges between 0.3 and 0.7.

Claim 16

Dependent Claim 26 words

A rotary gas treating apparatus, as defined in claim 11, wherein said front-stage rotor has a smaller thickness along said rotational axis than said rear-stage rotor.

Claim 17

Dependent Claim 31 words

A rotary gas treating apparatus, as defined in claim 13, wherein a ratio between said thickness of the front-stage rotor and that of said rear-stage rotor ranges between 0.3 and 0.7.

Claim 18

Dependent Claim 70 words

A rotary gas treating apparatus, as defined in claim 13, further comprising a heating means positioned between said desorbing area of said rear-stage rotor and said desorbing area of said front-stage rotor for heating said recycling gas wherein a temperature of recycling gas fed to said desorbing area of the front-stage rotor is set higher than a temperature of recycling gas fed to said desorbing area of the rear-stage rotor.

Claim 19

Dependent Claim 207 words

A rotary gas treating apparatus comprising: a front-stage rotor and a rear-stage rotor each consisting essentially of an adsorbent material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing area of the front-stage rotor and said adsorbing area of the rear-stage rotor being disposed in order in a continuous treatment-object gas flow passage from an upstream side thereof; said adsorbing material forming said rotors is fine activated carbon; said desorbing area of the front-stage rotor and said desorbing area of said rear-stage rotor being disposed in recycling gas flow passages, respectively; a drive mechanism for driving said front-stage and rear-stage rotors; said drive mechanism drives said rotors at revolving speeds different from each other; and an intermediate area provided in the rotational direction of said rear-stage rotor and between a terminal end of said desorbing area of the rear-stage rotor and a starting end of said adsorbing area of the rear-stage rotor, and a ventilation air flow passage provided such that the treatment-object gas having passed said intermediate area is returned to said treatment-object gas flow passage through said ventilation air flow passage.

Claim 20

Dependent Claim 207 words

A rotary gas treating apparatus comprising: a front-stage rotor and a rear-stage rotor each consisting essentially of an adsorbent material and allowing gas flow along a rotational axis, said rotors having, within respective rotational areas thereof, adsorbing areas for introducing a treatment-object gas and desorbing areas for introducing a recycling gas; said adsorbing area of the front-stage rotor and said adsorbing area of the rear-stage rotor being disposed in order in a continuous treatment-object gas flow passage from an upstream side thereof; said adsorbing material forming said rotors is fine activated carbon; said desorbing area of the front-stage rotor and said desorbing area of said rear-stage rotor being disposed in recycling gas flow passages, respectively; a drive mechanism for driving said front-stage and rear-stage rotors; said drive mechanism drives said rotors at revolving speeds different from each other; and an intermediate area provided in the rotational direction of said rear-stage rotor and between a terminal end of said desorbing area of the rear-stage rotor and a starting end of said adsorbing area of the rear-stage rotor, and a ventilation air flow passage provided such that the treatment-object gas having passed said intermediate area is returned to said treatment-object gas flow passage through said ventilation air flow passage.

Claim 21

Dependent Claim 31 words

A rotary gas treating apparatus, as defined in claim 16, wherein said drive mechanism includes a variable speed means for variably adjusting said revolving speeds of the front-stage and rear-stage rotors.

Claim 22

Dependent Claim 50 words

A rotary gas treating apparatus, as defined in claim 17, wherein said drive mechanism variable speed means includes rotary shafts for said front-stage and said rear-stage rotors, a motor and transmission mechanisms for transmitting rotational force of said motor to said rotary shafts, said transmission mechanisms having different transmission ratios.

Claim 23

Dependent Claim 27 words

A rotary gas treating apparatus, as defined in claim 18, wherein said adsorbing areas of said front-stage and rear-stage rotors are disposed in a substantially same region.

Claim 24

Dependent Claim 35 words

A rotary gas treating apparatus, as defined in claim 19, wherein the treatment-object gas is returned through said ventilation air flow passage to said treatment-object gas flow passage more upstream relative to said front-stage rotor.

Claim 25

Dependent Claim 45 words

A rotary gas treating apparatus, as defined in claim 20, wherein between said desorbing areas of the two rotors, there is interposed an intermediate heater for heating the recycling gas which temperature has dropped by its passage through the desorbing area of said rear-stage rotor.

Claim 26

Dependent Claim 22 words

A rotary gas treating apparatus, as defined in claim 21, wherein said adsorbing material forming said rotors comprises fibrous fine activated carbon.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-12-01	1996-06-01	1996-12-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-12-01	2000-06-01	2000-12-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-12-01	2004-06-01	2004-12-01	$7700.00	Window Closed / Lapsed

Rotary gas treating apparatus

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