A few small questions about cold hydrogen
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What changes will occur in system pressure, the hydrogen-to-oil ratio, and the reaction depth as the amount of cold hydrogen increases?
With the amount of fresh hydrogen remaining constant: increased amount of cold hydrogen → decreased bed temperature → decreased reaction depth → decreased hydrogen consumption → gradual increase in system pressure → hydrogen-to-oil ratio↑
Changes in the amount of cold hydrogen are primarily reflected in the bed temperature; an increase in the amount of cold hydrogen corresponds to a reduction in the reaction depth. As a result, the product becomes heavier, hydrogen consumption decreases, system pressure rises, and according to the definition of the hydrogen-to-oil ratio, this ratio increases as well