Method and apparatus for the abatement of toxic gas components from a semiconductor manufacturing process effluent stream
First Claim
1. A process for reducing a concentration of at least one toxic gas component from a semiconductor process effluent stream containing same, said method comprising:
- contacting said semiconductor process effluent with a first sorbent layer composition so as to retain at least a portion of the toxic gas component therein; and
contacting said process effluent with a second layer sorbent composition, so as to retain a second portion of the toxic gas component therein, wherein said first sorbent layer comprises a material having a high sorptive capacity for said toxic component and said second sorbent layer material comprises a material having a high capture rate sorptive affinity for the toxic component.
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Accused Products
Abstract
An apparatus and process for abating at least one acid or hydride gas component or by-product thereof, from an effluent stream deriving from a semiconductor manufacturing process, comprising, a first sorbent bed material having a high capacity sorbent affinity for the acid or hydride gas component, a second and discreet sorbent bed material having a high capture rate sorbent affinity for the same gas component, and a flow path joining the process in gas flow communication with the sorbent bed materials such that effluent is flowed through the sorbent beds, to reduce the acid or hydride gas component. The first sorbent bed material preferably comprises basic copper carbonate and the second sorbent bed preferably comprises at least one of, CuO, AgO, CoO, Co3O4, ZnO, MnO2 and mixtures thereof.
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Citations
44 Claims
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1. A process for reducing a concentration of at least one toxic gas component from a semiconductor process effluent stream containing same, said method comprising:
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contacting said semiconductor process effluent with a first sorbent layer composition so as to retain at least a portion of the toxic gas component therein; and
contacting said process effluent with a second layer sorbent composition, so as to retain a second portion of the toxic gas component therein, wherein said first sorbent layer comprises a material having a high sorptive capacity for said toxic component and said second sorbent layer material comprises a material having a high capture rate sorptive affinity for the toxic component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for abatement of at least one toxic gas component or by-product thereof, from an effluent stream deriving from a semiconductor manufacturing process, such apparatus comprising:
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a first sorbent bed material having a high capacity sorbent affinity for said at least one toxic gas component;
a second and discreet sorbent bed material having a high capture rate for said at least one toxic gas component; and
a flow path joining the process in gas flow communication with the sorbent bed materials such that the effluent stream contacts the first sorbent bed material then the second sorbent bed material to at least partially remove the at least one toxic gas component from the effluent stream. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An apparatus for abatement of at least one acid gas, hydride gas or by-product thereof, from an effluent stream deriving from a semiconductor manufacturing process, such apparatus comprising:
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a first sorbent bed material having a high capacity sorbent affinity for said at least one acid gas, hydride gas or by-product thereof;
a second and discreet sorbent bed material having a high capture rate sorbent affinity for said at least one acid gas, hydride gas or by-product thereof; and
a flow path joining the process in gas flow communication with the sorbent bed materials such that the effluent stream contacts the first sorbent bed material then the second sorbent bed material to at least partially remove the at least one acid gas, hydride gas or by-product thereof from the effluent stream.
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20. A layered dry resin sorbent system for abatement of an acid gas, hydride gas or by-product thereof, comprising;
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a first sorbent bed material having a high capacity sorbent affinity for said acid gas, hydride gas or by-product thereof;
a second and discreet sorbent bed material having a high capture rate sorbent affinity for said acid gas, hydride gas or by-product thereof; and
a flow path joining the process in gas flow communication with the sorbent bed materials such that the effluent stream contacts the first sorbent bed material then the second sorbent bed material to at least partially remove the at least one acid gas, hydride gas or by-product thereof from the effluent stream. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
1. copper oxide, (Cu 6%);
Silver oxide, (Ag 0.1%);
zinc oxide, (Zn 6.0%);
Molybdenum oxide, (Mo 2.5%);
triethylenediamine, (TEDA 3.5%); and
activated carbon; and
2. manganese oxide, (Mn 22%);
copper oxide, (Cu 23%);
cobalt oxide, (Co 10%);
silver oxide (Ag 3.5%); and
aluminum oxide. (Al 2.6%).
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41. The layered dry resin sorbent system according to claim 40, having a TLV sorbent capacity for arsine at 1 cm/sec of 3.67 moles/liter resin or 102 liters AsH3/kg resin.
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42. The layered dry resin sorbent system according to claim 20, wherein said high capture rate sorbent material comprises:
- copper oxide, (Cu 6%);
Silver oxide, (Ag 0.1%);
zinc oxide, (Zn 6.0%);
Molybdenum oxide, (Mo 2.5%);
triethylenediamine, (TEDA 3.5%); and
activated carbon, said sorbent system having a TLV sorbent capacity for arsine at 1 cm/sec of 3.67 moles/liter resin or 102 liter AsH3/kg resin.
- copper oxide, (Cu 6%);
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43. The layered dry resin sorbent system according to claim 20, having a TLV sorbent capacity for arsine at 1 cm/sec of 3.67 moles/liter resin or 102 liters AsH3/kg resin.
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44. The layered dry resin sorbent system according to claim 20, further comprising means for monitoring the sorbent materials for exhaustion.
Specification