What units in a typical refinery produce hydrogen as a by-product?
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As the title suggests, in a typical refinery (including those that produce ethylene), which units generate hydrogen? How is this hydrogen handled?
The hydrogen produced as a by-product of continuous reforming is generally used for catalytic cracking
Hydrogen is produced by catalytic cracking and catalytic reforming. This hydrogen is sent to the hydrofinishing unit after being purified via PSA.
Are there any hydrogen-containing exhaust gases that are sent out without being used in a hydrogenation unit or something similar?
Are there any hydrogen-containing exhaust gases that are sent out without being used in a hydrogenation unit or something similar?
Are there any hydrogen-containing exhaust gases that are sent out without being used in a hydrogenation unit or something similar?
The hydrogen tail gas generated by the hydrogenation unit is emitted by the unit itself, rather than being a by-product of the processing. But it can be recycled after desulfurization and ammonia removal.
PSA separates hydrogen and methane, with a recovery rate of typically 85%-90%; the remaining 10%-15% of hydrogen and methane is used together as fuel for heaters and boilers.
Mm! Does the term \"dry gas in a gas holder\" generally refer to the exhaust gas collected over the entire length?
With such a low hydrogen content, isn’t it pointless to use it for fuel or for hydrogen recovery from exhaust gases?