the product stream is immediately diluted with an inert gas (typically nitrogen). The amount of dilution can be chosen freely and is independent of the flow of other gases or pressure. The combination of dilution and elevated temperatures ensures that even high-boiling species, like hydrocarbons and oxygenates, can be maintained completely in the gas phase and can be directly analysed by online gas chromatography (GC). Using online GC for both gases and liquid products simplifies the analysis by eliminating the need for liquid sampling and allowing all product components to be assessed in one go. This enhances data point density and removes the need for manual liquid sample collection and offline analysis. It also reduces the handling of samples containing benzene and toluene, thereby improving operator safety. Testing conditions Two runs were conducted: Run-01 at varied reaction temperature and Run-02 at varied reaction pressure and atmosphere (see Table 2 ). Results and discussion Run-01
Block
1 Reactor
1
2
3
4
400
2 3 4 5 6 7 8 9
360
320
280
1 2 3
10 11 12 13 14 15 16
0
98 100
96
94 100
70
40
10
0
10 30 30
70
10 30
50
70 10
30
50 7010 30
50 70
Elasped run time
Figure 4 Testing results of Run-01 over time on stream (TOS)
Reactor
2
1 2 3 5 6 7 9
1.5
1
0.5
0
10 11 13 14 15
100
98 99
97
96
100
60 80 20 40
0
300
320
340
3 6 0
380
400
Temp ( 0 C)
Figure 5 Effect of reaction temperature: testing results of Run-01 with TOS from 25 to 75 hours
with the inert material Zirblast B120 to check the background conversion. The 4x reactor blocks were heated to different temperatures to investigate the effect of temperature on the catalyst performance.
Figure 3 shows the reactor loading diagram. The same catalyst was loaded in 12x reactors, with the remaining 4x reactors loaded only
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