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Contact us | Nitrogen |
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Products |
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Hydrogen Gas Generator
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Methanol Reforming Based /
Pressure Electrolysis based
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Ammonia Cracking Based |
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Methanol Reforming Based |
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The methanol and water is mixed in specified ratio and
pressurized. This mixture is passed through evaporator, metering
pump and then to super heater. This hot gas is then fed into a
reactor. The reaction of methanol reforming and the shift
reaction, takes place in the catalytic reactor of fixed beds
simultaneously to form H2 and CO2 finally.
The mixed gas after reaction is passed though the heat exchanger
to have the heat exchanged with feed gas in order to recover
part of heat and then fed further into the gas-liquid separation
buffer to separate the unreacted methanol and water, prior to
passing to the condenser and cooling gas dryer for condensation
in order to ensure the methanol in the reforming gas to meet the
specified quality. The liquid from condensation and separation
is the mixture of methanol and water, which are returned back to
the feedstock tank for reuse. The reformed gas enters a set of
PSA system, which separates all impurities through the
adsorption and separation in one time. The
hydrogen purification through PSA is adopted in the manner of
4-1-2/P and desorption at the atmospheric pressure (4 absorbers,
one absorber is in adsorption, 2 times of pressure
equalization). Each adsorber in a cycle undergoes adsorption
(A); equalized pressure-drop for the first time (E1D); equalized
pressure-drop for the second time (E2D); cis-exhale (PP),
inverse purge (D); flushing (P); equalized pressure increase for
the second time (E2R); equalized pressure increase for the first
time (E1R) and the final pressurisation (FR). The four adsorbers
shift regularly, alternating between adsorption and
regeneration, according to the arranged program in a closed
loop. In this way raw gas feeds and hydrogen withdraws
continuously.
There are a small amount of carbon monoxide and about
35%(v/v) hydrogen in the desorbed off gas. If it is recovered
and used as fuel, it brings the benefit of saving energy and
minimizing the pollution. |
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List Of Equipments |
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Methanol Reforming
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No. |
Description |
Quantity |
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1 |
Heat
exchanger |
1 |
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2 |
Condenser |
1 |
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3 |
Reformer |
1 |
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4 |
Evaporation
super-heater |
1 |
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5 |
Raw material
liquid storage tank |
1 |
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6 |
Metering pump
for feedstock solution |
1 |
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7 |
Gas –liquid
seporation buffer |
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Pressure Swing Adsorber (PSA) |
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No. |
Description |
Quantity |
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1 |
Adsorber
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4 |
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2 |
Product gas
buffer |
1 |
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Technical Specification |
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Description |
Specification |
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Hydrogen purity |
≥99.99%
(V/V) |
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Hydrogen pressure
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5 Kg/cm2g |
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Temperature of the product |
At ambient temp. |
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Utilities Requirement |
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Description |
Specification |
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Methanol |
0.60~0.68 kg/Nm3-H2 |
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Demineralized
water |
0.40~0.50 kg/Nm3-H2 |
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Electricity |
0.1 ~
0.15 kwh/Nm3-H2 |
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Features |
- Raw material resource is easier, storage is convenient,
price is stable.
- Short in flow,high automation,simple operation
- Minimum land occupation,low cost,when capacity is 1500
nm3/hr and under,the land occupation is less than 400m2.
- Low electricity consuming and low cost.
- No environmental pollution.
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Main Formula |
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CH3oH + H2O → CO2 + 3H2 |
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Main Products Index |
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Production
capacity
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Purity
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Temperature
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Pressure
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:-
20 Nm3/hr – 4000 Nm3/hr
:- 99% - 99.999%
:- Ambient
:- 8 bar – 25 bar |
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Copyright © 1995 Airox Nigen Equipments Pvt. Ltd. |
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