
Environmental National Invetion Patent Hydrogen Recovery Unit Ammonia Plant
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- Transportation:
- Ocean
- Port:
- SAHANGHAI
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Incoterm: | FOB,CFR,CIF |
Transportation: | Ocean |
Port: | SAHANGHAI |
Environmental National Invetion Patent Hydrogen Recovery Unit Ammonia Plant
Description:
Recovering hydrogen for recycling working.
Principle:
Domstic cold rolling steel annealing technical process as following chart,put steel strip into furnace,N2
purge heating cover,then add external cover inject pure hydrogen protective gas (then heating,inject
protective gas each period as heating period,keep warming period,cooling period,each manufactuer
technics different,the flow rate inject might have difference, before furnace finished inject nitrogen as
protective
In the first period of annealing,steel surface emulsion oil with heating volatilization,with temperature
raising,the oil without complied with heating gas will reacting.
At the begining,with temperature raising,steel surface emulsion water start volatilizate(about 100℃),
steel surface emulsion start reacting(about 300℃)
CnHm+O2 - CO+H2O
Hydrocarbon firstly reacte with O2 of Vapour,steel strip with mutually will become
CO,with tem improving,it will crack,atomic group smaller hydrogen molecule will
easily expanding with steel strip,all these atomic
group cracking place hydrogen is saturation,easily
become volatilization light hydrocarbon(450℃,while
H2 helpful for restore carbon,however there still
some carbon which inside steel surface,while 700℃
H2 will reacte directly with carbon,reacte CH4
CnHm+O2 - CnOm-2+H2
Steel annealing former process will use rolling oil,rolling oil main part is mineral oil,its main part including
each hydrocarbon-called impurities,mineral oil including sulphur,N2,O2 etc element
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