Method for recovering vapors during the dispensing of a bituminous product
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorsRichard A. Jenne, Joseph M. Konieczka
Life of this patent
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Abstract
In a method for recovering vapors during the dispensing of a bituminous product into a tank, an inlet opening of the tank is closed with a fitting. The bituminous product is dispensed into the tank via the fitting. The bituminous product emits vapors inside the tank. The vapors are exhausted from the tank without direct contact of the vapors with moving parts. The vapors are transported to a condenser, and condensed to a liquid in the condenser. The condensed liquid is returned to the tank via the fitting.
Claims20
A method for recovering vapors during the dispensing of a bituminous product into a tank, comprising the steps of:
- closing an inlet opening of the tank with a fitting,
- dispensing the bituminous product into the tank via the fitting, the bituminous product emitting vapors inside the tank,
- exhausting the vapors from the tank,
- transporting the vapors to a condenser,
- condensing the vapors to a liquid in the condenser, and
- returning the condensed liquid to the tank via the fitting.
A method for recovering vapors during the dispensing of a blend of an asphalt and a volatile diluent into a tank, comprising the steps of:
- closing an inlet opening of the tank with a fitting,
- dispensing the blend into the tank via the fitting at a first flow rate, the blend emitting vapors of diluent inside the tank,
- pulling the vapors from the tank to a condenser without direct contact of the vapors with moving parts, the vapors being pulled from the tank to the condenser at a second flow rate which is not more than about 35% greater than the first flow rate,
- condensing the vapors to a liquid in the condenser, and
- returning the condensed liquid to the tank via the fitting.
A method for recovering vapors during the dispensing of a blend of an asphalt and a volatile diluent into a tank of a tanker truck, comprising the steps of:
- substantially completely closing an inlet opening of the tank with a fitting which tapers from a relatively wide outer end to a relatively narrow inner end,
- dispensing the blend into the tank via the fitting at a first flow rate, the blend emitting vapors of diluent inside the tank,
- pulling the vapors from the tank to a condenser without direct contact of the vapors with moving parts, the vapors being pulled from the tank to the condenser at a second flow rate which is not more than about 20% greater than the first flow rate,
- condensing at least about 80% by weight of the pulled vapors to a liquid in the condenser, and
- returning the condensed liquid to the tank via the fitting.
Dependencies are inferred from the claim text.