channel a - oxygen, nitrogen & carbon dioxide · channel a : for the analysis of hydrogen in...
TRANSCRIPT
Channel A - Oxygen, Nitrogen & Carbon Dioxide
Channel B - Hydrogen
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Chlorine Analyser
The Problem
The production of bleach requires Chlorine, which is manufactured by the process of electrolysis. It is important to analyse the quality of the Chlorine gas to ensure that the electrolysis process is effi cient with respect to time, therefore not wasting electricity and to ensure there are no leaks between the membranes.
By analysing the impurities Hydrogen, Oxygen, Nitrogen and Carbon Dioxide in Chlorine gas will indicate the effi ciency of the process and any leakage.
The Solution
Using our expertise here at Ellutia, we have customised the 200 Series GC by adding Multi Dimensional Chromatographic channels each with a TCD, as follows:
Channel A : for the analysis of Hydrogen in the range 0.01 to 0.5% vol. using Argon carrier gas
Channel B : for the analysis of Oxygen, Nitrogen and Carbon Dioxide in the range 0.01 to 3% vol. using Helium carrier gas.
Special Hastelloy valves, pipework and columns have been installed to reduce corrosion by the sample.
Multi Dimensional Chromatography techniques are employed to ensure the Chlorine matrix gas does not reach the TCD.
With the added heated Naffi on dryer installed in the sample line (to remove as much moisture as possible thus reducing potential corrosion) the analyser can be placed “on-line”.
Online Chlorine Analysis
1/16
” x
0.5m
m id
PE
EK
1/16
” od
PTF
E
12vD
C
1/16
” od
Sta
inle
ss S
teel
Air
In
NV
8Pur
ge In
Pur
ge O
ut
Sam
ple
In
ND
1
12
3 4
56
7
89
10
12
3 4
56
7
89
10
12 3
456
Hyd
roge
n In
Car
rier
Cha
nnel
AM
T1H
CT1
InP
R1
NV
1
NV
4
Str
ipp
er A
Ana
lysi
s A
SL1
Str
ipp
er V
ent
A
NV
3
Byp
ass
A
NV
2
NV
5
Str
ipp
er B
Ana
lysi
s B
Det
ecto
rP
ositi
on
Inje
ctor
Pos
ition
SL2
NV
7
NV
6
Str
ipp
er V
ent
B
Sam
ple
Out
PR
2M
T2H
CT2
OT1
Arg
on In
Car
rier
Cha
nnel
B
PR
3
TCD 2
TCD 1
System Diagram