关键词: 喷气燃料加氢装置, 柴油加氢装置, 一次通过, 氢气, 低分气, 热氢, 循环氢压缩机

Abstract:

The optimization process of hydrogen utilization in jet fuel hydrogenation unit is discussed. The original design is a once-through process, and its hydrogen recovery rate is high, but there is a problem of salt deposition in the gas valve of the make-up hydrogen compressor. The stable operation of the make-up hydrogen compressor is ensured by changing the gas from low pressure separator after reaction to PSA. From the perspective of energy conservation, changing the hydrogen supply mode from cold hydrogen to hot hydrogen can save 840,000 yuan annual. By adding a jet fuel hydrogenation recycle hydrogen compressor, the quantity of make-up hydrogen for the jet fuel hydrogenation unit can be reduced, and the hydrogen supply capacity of the diesel hydrogenation unit can be increased by 3.0 dam³/h. After the once-through process of hydrogen is changed to recycle hydrogen, the gas from low pressure separator after jet fuel hydrogenation reaction is reduced by 5.0 dam³/h, which can effectively reduce the hydrogen loss of the unit.

Key words: jet fuel hydrogenation unit, diesel hydrogenation unit, once-through process, hydrogen, gas from low pressure separator, hot hydrogen, recycle hydrogen compressor