Several issues regarding hydrogen production
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Newbie, a few questions: 1. Before supplying hydrogen and steam to the hydrogen production converter, the lowest temperature of the catalyst bed in the converter must be ________ the hydrolysis temperature. 2. When purging pipelines, if it is a feed oil pipeline, ____________ should be used for purging. 3. During accident handling, to ensure that the conversion catalyst is not damaged, steam is generally shut off before the inlet of the conversion furnace drops below __________. Sir, please tell me the answer; it would be great if you could explain it in detail. Thank you! ! !
1. Steam is supplied to the converter; generally, the outlet temperature of the converter is above 400°C, and the steam meets the required standards, while the temperature in the medium conversion bed is above 180°C. 2. Steam purging is generally used for oil line purging. 3. Generally, if the outlet temperature of the conversion furnace is below 400, the conversion steam must be cut off; if you need to resume operation promptly, this limit can be relaxed slightly.
1. Before hydrogen and steam are supplied to the hydrogen production converter, the lowest temperature of the catalyst bed in the converter must be __higher than______ the hydrolysis temperature. 2. When purging pipelines, if it is a feed oil pipeline, __nitrogen__________ should be used for purging. 3. During accident handling, to prevent damage to the conversion catalyst, it is generally necessary to first shut off the feed material and then cut off the steam, before the temperature at the inlet of the conversion furnace drops below ___500 degrees_______.
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I would like to ask what this “hydrolysis” means?
Why is nitrogen used in the crude oil pipeline? Can’t we use steam?
1. Before hydrogen and steam are supplied to the hydrogen production converter, the lowest temperature of the catalyst bed in the converter must be ____ higher than ____ the hydrolysis temperature. 2. When purging pipelines, if it is a feed oil pipeline, _____steam_______ should be used for purging. 3. During accident handling, to prevent damage to the conversion catalyst, steam is generally removed before the temperature at the inlet of the conversion furnace drops below _____400℃______. 1. Since the components of the hydrogen production conversion catalyst are Ni and K, and the additive K serves to prevent coking, hydrolysis occurs to produce KOH, causing it to lose its original function. 2. The steam purging is thorough. Safe. 3. Generally, steam supply is stopped based on the inlet temperature of the medium-pressure converter; steam supply is halted when the inlet temperature of the medium-pressure converter reaches 230°C. It’s not very professional; please feel free to offer your criticism and suggestions