VSO-2020

System GC Valve Storage Oven

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Shimadzu system GCs have unique valve storage ovens to store switching valves. In addition to improved accuracy and precision, this provides greater system flexibility. Gas sampling, pre-cut and back flush systems can be easily configured with the valve storage oven.

Extensible GC Valve Storage Oven for various systems

Temperatures up to 350℃ can be applied.
Accommodates up to 6 switching valves.
Reagardless of the switching valve’s maximum temperature, the column oven temperature can be selected for column aging.
Oven space can be fully utilized.
Existing Shimadzu GC-2010 Plus/GC-2014 systems can be upgraded to gas analysis and pre-cut/ heart-cut/ back-flush configurations.


1. Multi-valve application system
This GC-2014 based analyzer determines the composition of a gas sample obtained during the refinery process. This system utilizes four parallel analytical lines by making four simultaneous injections with independent separations and detection. Methane through C4 hydrocarbons and C5 paraffins are reported individually, while C5 olefines and C6+ are reported as a composite. If H2S is contained, it is determined by TCD to 500 ppm. Argon is not separated from oxygen. Approximate analysis time is 6 minutes. A Mol% report is output using dedicated chromatography software.

Target gases and concentration range

 
Name of Compound		 Concentration Range
No.
Name of Compound		 Concentration Range
Low Conc. High Conc. Low Conc. High Conc.
1 Hydrogen (H2) 0.01% 80% 14 n-Butane
(n-C4H10)		 0.01% 1.00%
2 Oxygen (O2) 0.01% 50% 15 Propadiene (C3H4) 0.01% 1.00%
3 Nitrogen (N2) 0.01% 50% 16 Acetylene (C2H2) 0.01% 1.00%
4 Methane (Ch4) 0.01% 80% 17 trans-2-Butene (trans-C4H8) 0.01% 1.00%
5 Carbon Monoxide (CO) 0.01% 10% 18 1-Butene (1-C4H8) 0.01% 1.00%
6 Carbon Dioxide (CO2) 0.01% 30% 19 iso-Butylene (i-C4H8) 0.01% 1.00%
7 Ethylene (C2H4) 0.01% 10% 20 cis-2-Butene (cis-C4H8) 0.01% 1.00%
8 Ethane (C2H6) 0.01% 10% 21 iso-Pentane (i-C5H12) 0.01% 1.00%
9 Acethylene (C2H2) 0.01% 10% 22 n-Pentane (n-C5H12) 0.01% 1.00%
10 Hydrogen Sulfide (H2S) 0.05% 30% 23 1,3-Butadiene (1,3-C4H6) 0.01% 1.00%
11 Propane (C3H8) 0.01% 5% 24 Propyne (C3H4) 0.01% 1.00%
12 Propylene (C3H6) 0.01% 5% 25 C6 plus 0.01% 1.00%
13 iso-Butane
(i-C4H10)		 0.01% 1%        

Heated gases application system

The refinery process requires several catalyst reactions to produce various petroleum products. Heated gases caused by catalyst reactions have to be monitored. Since condensable gases at ambient temperature are always included in the heated gas stream, all of the gas pipes need to be heated, including valve heads and sample loops, in order to avoid gas condensation. This reaction gas monitoring system can be used not only for refinery process catalysis research but also for combustion exhaust gas catalysis research.

 
Name of Compound		 Concentration Range
No.
Name of Compound		  
Low Conc. High Conc. Low Conc. High Conc.
1 Hydrogen (H2) 0.01% 30% 15 cis-2-Butene (cis-C4H8) 0.01% 10%
2 Argon (Ar) 0.01% 5% 16 1-Butene (1-C4H8) 0.01% 10%
3 Nitrogen (N2) 0.01% 50% 17 n-Pentane (n-C5H12) 0.01% 20%
4 Methane (Ch4) 0.01% 20% 18 iso-Pentane (i-C5H12) 0.01% 20%
5 Carbon Monoxide (CO) 0.01% 10% 19 n-Hexane (C6H14) 0.01% 20%
6 Carbon Dioxide (CO2) 0.01% 10% 20 n-Heptane (C7H16) 0.01% 20%
7 Ethylene (C2H4) 0.01% 40% 21 n-Octane (C8H18) 0.01% 20%
8 Ethane (C2H6) 0.01% 20% 22 n-Nonane (C9H20) 0.01% 20%
9 Propane (C3H8) 0.01% 20% 23 n-Decane (C10H22) 0.01% 20%
10 Propylene (C3H6) 0.01% 40% 24 Benzene 0.01% 20%
11 n-Butane (n-C4H10) 0.01% 10% 25 Toluene 0.01% 20%
12 iso-Butane (i-C4H10) 0.01% 10% 26 Xylene 0.01% 20%
13 iso-Butene (i-C4H8) 0.01% 10% 27 EtOH (C2H5OH) 0.01% 20%
14 trans-2-Butene (trans-C4H8) 0.01% 10%        

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