Device for adsorbing the hydrogen sulfide component of exhausted calibration gases

• US 9,289,714 B1
• Filed: 10/17/2014
• Issued: 03/22/2016
• Est. Priority Date: 10/17/2014
• Status: Active Grant

• Current Assignee: Juvanco Industries, LLC
• Original Assignee: Juvanco Industries, LLC
• Inventors: Juvan, Matthew Cory
• Primary Examiner(s): Jones, Christopher P
• Application Number:
  US14/516,881
• Time in Patent Office: 522 Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2257/304 Hydrogen sulfide
• CPC Class Codes: B01D 2258/02 Other waste gases
• CPC Class Codes: B01D 2258/0266 from animal farms
• CPC Class Codes: B01D 2258/0283 Flue gases
• CPC Class Codes: B01D 46/62 connected in series
• CPC Class Codes: B01D 53/0407 Constructional details of adsorbing systems
• CPC Class Codes: B01D 53/0454 Controlling adsorption controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047
• CPC Class Codes: B01D 53/52 Hydrogen sulfide
• CPC Class Codes: G01N 33/0006 Calibrating gas analysers

Abstract

A portable and disposable device for adsorbing the hydrogen sulfide component of the calibration gases that would otherwise be released into the atmosphere during the calibration of such a detector includes: (a) an activated carbon bed having a configuration adapted to allow for a specified flow rate of the calibration gas, (b) an upstream and a downstream hydrated, particulate filter, (c) an upstream and a downstream hydrophobic filter, (d) a conduit having a configuration adapted to enclose and assemble the activated carbon bed, hydrated, particulate filters and hydrophobic filters; and wherein the hydrophobic filters and hydrophobic filters each have a configuration that is adapted to maintain the humidity level in the activated carbon bed above a set level.

Claims

1. A portable device for adsorbing a hydrogen sulfide component of a calibration gas that would otherwise be released into the surrounding atmosphere during the testing of a portable gas detector in which said calibration gas flows at a specified rate through said portable gas detector, said device comprising:

an activated carbon bed having upstream and downstream ends and a configuration adapted to allow for said specified flow rate of said calibration gas from said downstream end to said upstream end of said activated carbon bed,

an upstream and a downstream hydrated, particulate filter, said upstream particulate filter situated such that it is adjacent said upstream end of said activated carbon bed and said downstream particulate filter situated such that it is adjacent said downstream end of said activated carbon bed,

an upstream and a downstream hydrophobic filter, said upstream hydrophobic filter situated such that it is adjacent and upstream of said upstream hydrated, particulate filter and said downstream hydrophobic filter situated such that it is adjacent and downstream of said downstream hydrated, particulate filter,

wherein said hydrophobic filters and hydrophobic filters each have configuration that are adapted to maintain the humidity level in said activated carbon bed above a set level so as to ensure a desired degree of adsorption of said hydrogen sulfide at said specified flow rate of said calibration gas, and

a conduit having a configuration adapted to enclose and assemble said activated carbon bed, upstream and downstream hydrated, particulate filters and upstream and downstream hydrophobic filters and direct the flow of said calibration gas through said device at said specified flow rate.

2. The portable device as recited in claim 1, wherein:

said hydrated, particulate filters having a prescribed degree of saturation in the range of 0.25-1.0.

3. The portable device as recited in claim 1, wherein:

the configurations of said activated carbon bed, hydrated, particulate filters and hydrophobic filters are further adapted to provide said device with the property of being disposable as standard trash rather than as hazardous material.

4. The portable device as recited in claim 2, wherein:

the configurations of said activated carbon bed, hydrated, particulate filters and hydrophobic filters are further adapted to provide said device with the property of being disposable as standard trash rather than as hazardous material.

5. A method of providing a portable device for adsorbing a hydrogen sulfide component of a calibration gas that would otherwise be released into the surrounding atmosphere during the testing of a portable gas detector in which said calibration gas flows at a specified rate through said portable gas detector, said method comprising the steps of:

providing an activated carbon bed having upstream and downstream ends and a configuration adapted to allow for said specified flow rate of said calibration gas from said downstream end to said upstream end of said activated carbon bed,

providing an upstream and a downstream hydrated, particulate filter, said upstream particulate filter situated such that it is adjacent said upstream end of said activated carbon bed and said downstream particulate filter situated such that it is adjacent said downstream end of said activated carbon bed,

providing an upstream and a downstream hydrophobic filter, said upstream hydrophobic filter situated such that it is adjacent and upstream of said upstream hydrated, particulate filter and said downstream hydrophobic filter situated such that it is adjacent and downstream of said downstream hydrated, particulate filter,

wherein said hydrophobic filters and hydrophobic filters each have configuration that are adapted to maintain the humidity level in said activated carbon bed above a set level so as to ensure a desired degree of adsorption of said hydrogen sulfide at said specified flow rate of said calibration gas, and

providing a conduit having a configuration adapted to enclose and assemble said activated carbon bed, upstream and downstream hydrated, particulate filters and upstream and downstream hydrophobic filters and direct the flow of said calibration gas through said device at said specified flow rate.

6. The method as recited in claim 5, wherein:

said hydrated, particulate filters having a prescribed degree of saturation in the range of 0.25-1.0.

7. The method as recited in claim 5, wherein:

the configurations of said activated carbon bed, hydrated, particulate filters and hydrophobic filters are further adapted to provide said device with the property of being disposable as standard trash rather than as hazardous material.

8. The method as recited in claim 6, wherein:

the configurations of said activated carbon bed, hydrated, particulate filters and hydrophobic filters are further adapted to provide said device with the property of being disposable as standard trash rather than as hazardous material.