Operations of water and chlorine injection in catalytic reforming
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The amount of water injected in catalytic reforming is adjusted according to the naphthenic content of the feedstock； The chlorine injection amount is adjusted according to the water content in the circulating gas. That is, first analyze the properties of the raw materials, then adjust the water injection volume, and subsequently adjust the chlorine injection amount. What do you think are the advantages of this method?
You’re right; the feedstocks used in reforming are generally divided into paraffinic and naphthenic feedstocks. It actually comes down to the aromatic content. Regarding the reforming process, factors such as reaction temperature, pressure, and the water-chlorine balance play a role, with these values typically being controlled within the range of 15–30; specifically, 15–20 at the beginning and 20–30 later on
Isn’t the chlorine dosage adjusted based on the chlorine content in the catalyst? That’s how we do it everywhere
Aren’t there online water analyzers available? The chlorine dosage can be determined based on the water content in the gas
Well, nowadays, devices are generally monitored using online analyzers. Convenient and fast.
For fixed-bed semi-regenerative reforming units, the control and assessment of the water-chlorine balance require comprehensive analysis from various aspects, such as the ratio of C3 to C4 in the full analysis of recycled hydrogen, as well as changes in the temperature drops across different reactions.
Whether in fixed-bed or continuous reforming, the water-chlorine balance is a key point of control and a persistent topic. The basis for judgment remains the same: product quality, temperature drop during the reaction, and the C3/C2 or C3/C1 ratio……
It should be related to the chlorine injection and the catalyst itself