Composite gas sampling system
First Claim
1. An apparatus for capturing a periodic gas sample following vaporizing and conditioning into a gas phase of a cryogenic liquid hydrocarbon source during transfer processing, comprising:
- at least a first and a second vaporized sample input lines each incorporating at least a first direct feed line, a second speed loop line, and a third accumulator feed line;
each of the first direct feed lines of the first and second vaporized sample input lines being directly connected to a gas analyzer for on-line, real-time, periodic analysis of a non-composite gas sample;
each of the speed loop lines being connected to a speed loop having a pressure regulator, at least one high pressure pump, a plurality of solenoid controlled valves for controlled filling of a plurality of non-composite sample cylinders for storage of fresh gas samples obtained at specified processing intervals, and a by-pass outlet to a boil-off-gas system;
each of the accumulator lines including at least one solenoid controlled valve, said accumulator line for passing a gas sample of a select volume at select time intervals to a pressure regulator, a solenoid controlled valve, and a gas accumulator for receiving multiple periodic select volume gas samples to create a composite gas sample, and a valve controlled outlet from the gas accumulator, where said at least one high pressure pump maintains pressure sufficient in the gas accumulator to prevent dew point drop-out of the gas sample, anda plurality of sample grab cylinders for receiving composite samples from the gas accumulator upon completion of source processing.
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Accused Products
Abstract
A sampling system for collecting periodic composite and/or non-composite samples of vaporized gas during a transfer process from a vaporizer of a cryogenic hydrocarbon liquid including 1) a direct sample pathway to a gas analyzer for instantaneous, real-time vaporized gas analysis, 2) a speed loop pathway for directly collecting fresh vaporized gas samples for subsequent analysis, and 3) a composite sample pathway including a pressurized sample accumulator for collecting a plurality periodically obtained samples of a select volume during the transfer process to create a composite sample of the vaporized gas.
22 Citations
14 Claims
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1. An apparatus for capturing a periodic gas sample following vaporizing and conditioning into a gas phase of a cryogenic liquid hydrocarbon source during transfer processing, comprising:
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at least a first and a second vaporized sample input lines each incorporating at least a first direct feed line, a second speed loop line, and a third accumulator feed line; each of the first direct feed lines of the first and second vaporized sample input lines being directly connected to a gas analyzer for on-line, real-time, periodic analysis of a non-composite gas sample; each of the speed loop lines being connected to a speed loop having a pressure regulator, at least one high pressure pump, a plurality of solenoid controlled valves for controlled filling of a plurality of non-composite sample cylinders for storage of fresh gas samples obtained at specified processing intervals, and a by-pass outlet to a boil-off-gas system; each of the accumulator lines including at least one solenoid controlled valve, said accumulator line for passing a gas sample of a select volume at select time intervals to a pressure regulator, a solenoid controlled valve, and a gas accumulator for receiving multiple periodic select volume gas samples to create a composite gas sample, and a valve controlled outlet from the gas accumulator, where said at least one high pressure pump maintains pressure sufficient in the gas accumulator to prevent dew point drop-out of the gas sample, and a plurality of sample grab cylinders for receiving composite samples from the gas accumulator upon completion of source processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification