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GASLAB designs and supplies complete hydrogen gas plants with cylinder
filling facility.
On
small scale Hydrogen is produced from electrolysis of water in either
Knowel’s type Mono Polar Cells or Filter press type Bi-polar cells
known as electrolysers.
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| 1. |
Tanks
and bells are welded by special quality electrodes to avoid
Hydrogen and Caustic soda embrittlement.
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| 2. |
Bells
are manufactured out off C.R.C. Sheets which are specially recommended
for Caustic soda handling. |
| 3. |
The
Asbestos diaphragm cloth is manufactured from 100% pure long
fiber asbestos without cellulose core and closely woven to
avoid pin holes.
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| 4. |
Extra
length of cloth is provided at the bottom to guard against bye-pass
of gases. |
| 5. |
Ebonite
Insulators are tested against warping under high temperature
and they are checked by Meger for infinity resistance.
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| 6. |
Nickelling
of Anodes is done under strict supervision for a minimum of
.002 thick coarse deposit and each plate is tested chemically
for pores.
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| 7. |
The
bells are fabricated by special fixtures and pneumatically
tested to avoid leakage.
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| 8. |
Side
plates of bells are welded to avoid leakage. |
| 9. |
Each
Electrode plate is made straight by special Jigg and all the
plates are perfectly parallel when assembled.
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| 10. |
The
1" pipes are fixed on the bells with the help of a special
Jigg to enable all the tubes to be equidistant and parallel
for quick and easy fitting of the Electrode plate.
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| 11. |
Each
Electrode plate has two FULL-LENGTH copper rods. |
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The
performance and long life electrolyser depends on the quality of
feed water. As only Hydrogen and Oxygen together with some water
vapour escape from the electrolyser. Each impurity introduced with
the feed water will accumulate in electrolyte, i.e. Chloride, Sulphate
and iron. The former two will have harmful effect on Nickel metal
which leads to heavy corrosion and the later will cause impure Oxygen
gas, The most suitable and economical method for production of pure
feed water is by Ion Exchanger (DM water). The immediate detection
of impurities in the feed water is its specific conductivity which
should not exceed 2 x 10 ohm/CM Every cubic meter of Hydrogen produced,
requirement 1 lt., of feed water, which is measured by rotameter
provided with each plant.
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Hydrogen=99.8+
2 by Vol.
Oxygen =99.5+ 0.5 by Vol. |
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Max.
250 mm of water Column which is sufficient for stroage in low pressure
Gas Holders. When oxygen is not required to store in Gas holder
it is vented through pressure balancing tank to atomsphere.
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(in filter press type) : NIL
(in Knowel type) :
Minor leakage of gases connot be detected, which cause caustic atomsphere
in the cell room. |
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(in filter press
type) : NIL
(in Knowel type) :
1. In
case of loose electrical connection.
2. In case of Blocking of the cells from bottom by desposition of
soild Caustic and Carbonate
3. Short circuit due to leakage of electrolytes.
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| GASLABS
ASIA, SS FOUNDRY CHEMICAL INDIA PVT. LTD. |
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