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| Rocker lever solenoid valve |
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| Method and apparatus for connecting and disconnecting tubular members |
| It is a primary feature of the present invention to provide a novel power energized mechanism for ... |
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| Punch with removable blade |
| Having described my invention, I claim: 1. A punch for cutting an elongated slug from a sheet of ... |
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| Damper valve |
| What is claimed is: 1. In an elongated gas flow conducting means including valved aperture means ... |
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| Residential waste water disposal system |
| The invention lies in the field of systems for the disposal of waste waters generated within a ... |
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| Pipe closure apparatus |
| OF THE ILLUSTRATED EMBODIMENT The illustrated embodiment utilizes four jaws which are mounted on ... |
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| Power tongs |
| A power tong is provided in accordance with the present invention which includes a frame having a ... |
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| Rotary tong incorporating interchangeable jaws for drill pipe and casing |
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| Cylinder gripping apparatus |
| OF A PREFERRED EMBODIMENT OF THE INVENTION Turning now to the drawings in FIG. 20, there is ... |
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Volatile liquid storage system
| Details |
Inventors: Laverman, Royce J.; Winters, Philip J.; Rinehart, Jeffrey K.;
Assignee: Chicago Bridge & Iron Technical Services Company (Oak Brook, IL)
Primary Examiner: Spitzer; Robert
Assistant Examiner:
Attorney, Agent or Firm: Marshall, O'Toole, Gerstein, Murray & Bicknell
A volatile liquid storage and emissions control apparatus and method comprising an above-ground volatile liquid storage tank having a bottom, a vertical circular wall and an external fixed roof, the tank having an internal floating roof, and air vents in the tank wall; an emissions collection apparatus comprising a conduit having an emissions laden air inlet end communicating with the tank vapor space and an emissions laden air outlet end communicating with the inlet end of an emissions abatement apparatus, with the conduit including a pump for withdrawing emissions laden air from the tank vapor space and feeding it into the emissions abatement apparatus, and the emission abatement apparatus being capable of eliminating most of the emissions from the emissions laden air with formation of a gaseous effluent which is discharged to the atmosphere. |
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DETAILED DESCRIPTION According to one aspect of the invention, a volatile liquid storage and emissions control apparatus is provided comprising an above-ground volatile liquid storage tank having a bottom, a vertical cylindrical circular wall having a lower edge portion joined to the bottom, and an external fixed roof, the tank having an internal floating roof adapted to float on a volatile liquid to be stored in the tank, and air vent means in the tank located in communication with a vapor space in the tank constituting at least the space above the floating roof when the floating roof floats on a predetermined maximum volume of volatile liquid in the tank; the air vent means permitting air to flow inwardly into the tank vapor space at an air flow rate under specified ambient wind speed conditions and tank operating conditions; an emissions collection apparatus comprising a conduit having an emissions laden air inlet end communicating with the tank vapor space above the floating roof when the floating roof floats on a maximum volume of volatile liquid and an emissions laden air outlet end communicating with the inlet end of an emissions abatement apparatus, with said conduit including an induced draft blower for withdrawing emissions laden air from the tank vapor space and feeding it into the emissions abatement apparatus while simultaneously having air flow inwardly through the air vent means into the tank vapor space; and the emissions abatement apparatus comprising means for eliminating most of the emissions from the emissions laden air with formation of a gaseous effluent and discharging the resulting gaseous effluent to the atmosphere.
Desirably the air vent means is sized so that air can flow inwardly through the air vent means into the tank vapor space at an air flow rate under specified natural wind speed conditions and tank operating conditions which does not exceed production of a mixture of air and emissions greater than a predetermined amount.
The phrase "predetermined amount" includes a predetermined volume of the mixture as well as a predetermined flow rate of the mixture
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