Chemical filtration unit incorporating air transportation device
First Claim
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1. A filtration assembly comprising:
- (a) a housing having an inlet and an outlet for defining an air flow path through the housing;
(b) a low-pressure drop chemical filter positioned in the housing between the inlet and the outlet in the air flow path;
(c) a low-pressure drop particulate filter positioned in the housing between the inlet and the outlet in the air flow path; and
(d) an air transport device positioned in the housing between the inlet and the outlet in the air flow.
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Abstract
The present invention overcomes the limits of activated carbons, ion exchange resin beads and fibers, and liquid form ion exchangers for acid, base, or VOCs gases removal by providing a filtration assembly for the filtration of chemical contaminants and particulates from an air or gas stream, the assembly having a low pressure-drop structure. The filtration assembly includes a low-pressure drop chemical filter, a low-pressure drop particulate filter, and an air transportation device, such as a fan or blower, all combined in a housing.
43 Citations
11 Claims
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1. A filtration assembly comprising:
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(a) a housing having an inlet and an outlet for defining an air flow path through the housing;
(b) a low-pressure drop chemical filter positioned in the housing between the inlet and the outlet in the air flow path;
(c) a low-pressure drop particulate filter positioned in the housing between the inlet and the outlet in the air flow path; and
(d) an air transport device positioned in the housing between the inlet and the outlet in the air flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A filtration assembly comprising:
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(a) a housing having an inlet and an outlet for defining an air flow path through the housing;
(b) a low-pressure drop chemical filter positioned in the housing between the inlet and the outlet in the air flow path, the chemical filter configured for straight-through flow and configured to provide a pressure drop of no greater than 0.5 inch water at an airflow filter face velocity of 0.5 m/s;
(c) a low-pressure drop particulate filter positioned in the housing between the inlet and the outlet in the air flow path, the particulate filter configured to provide a pressure drop of no greater than 0.5 inch water at an airflow filter face velocity of 0.5 m/s; and
(d) an air transport device positioned in the housing between the inlet and the outlet in the air flow.
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10. A filtration assembly comprising:
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(a) a housing having an inlet and an outlet for defining an air flow path through the housing;
(b) a low-pressure drop chemical filter positioned in the housing between the inlet and the outlet in the air flow path, the chemical filter configured for straight-through flow and configured to provide a pressure drop of no greater than 0.5 inch water at an airflow filter face velocity of 0.5 m/s, the chemical filter comprising;
(i) a first layer configured for removal of acidic contaminants; and
(ii) a second layer configured for removal of basic contaminants;
(c) a low-pressure drop particulate filter positioned in the housing between the inlet and the outlet in the air flow path, the particulate filter configured to provide a pressure drop of no greater than 0.5 inch water at an airflow filter face velocity of 0.5 m/s; and
(d) an air transport device positioned in the housing between the inlet and the outlet in the air flow. - View Dependent Claims (11)
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Specification