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5 Instruments
5.
Note: It is not necessary to connect a nickel reformer to determine acetylene
Figure 1 Connection diagram of ten-way valve in sampling and backflushing state
Note: It is not necessary to connect a nickel reformer to determine acetylene
Figure 2 Connection diagram of the ten-port valve in the sampling state
5.
5.
The nickel catalytic hydrogenation column is prepared as follows: Weigh 200g of nickel nitrate and dissolve it in 90mL of distilled water, add 80g of 6201 chromatographic support or other suitable support, boil (5-10) min, cool, filter, and place the support in an evaporating dish Dry it at 105°C, then place it on an electric stove to slowly heat (should be in a fume hood) until the red-brown nitrogen dioxide is exhausted.
Note: Standard samples should be used to check the reactivity of the nickel catalytic hydrogenation column on a regular basis
5.
Table 1 Chromatographic columns and typical operating conditions for the determination of carbon monoxide and carbon dioxide
Table 2 Operating conditions of nickel catalytic hydrogenation column
Figure 3 Typical chromatograms of ethylene and propylene standard samples on TDX-01 packed column
Figure 4 Typical chromatogram of ethylene and propylene standard sample on Carbonbond capillary column
Table 3 Chromatographic column for acetylene analysis and typical operating conditions
Figure 6 Typical chromatograms of ethylene and propylene standard samples on Carbonbond capillary column
