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Buchi Scrubber K-415 Manual de usuario Pagina 41

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6 Operation
41 K-415 Operation Manual, Version B
6 Operation
This chapter gives examples of typical instrument applications and instructions on how to operate the
instrument properly and safely.
!
CAUTION
Risk of minor or moderate cuts when handling damaged glass parts.
• Handle glass parts with care.
• Visually inspect every glass part before mounting.
• Exchange damaged glass parts immediately.
• Do not touch cracks or bits of broken glass with bare hands.
ATTENTION
Switch on the K-415 before a connected instrument produces gases. Check the level of the liquid in
the neutralization vessel before putting the scrubber into operation - the optimal liquid level can be
checked against the blue filling mark (wave) on the neutralization vessel.
If the K-415 is controlled via a digester do not switch the K-415 off. If the K-415 is equipped with
cooling water control (
ECO
-versions) leave the external cooling water supply switched on as well.
6.1 Typical applications
Table 6-1: Typical applications
Gases and vapors Chemical formula Neutralization (stage 2) Specific reactions (stage 4)
Kjeldahl digestions SO
2
, H
2
SO
4
saturated soda / NaOH
8 - 10 % (max. 20 %)
Sulfur dioxide SO
2
saturated soda / NaOH
8 - 10 % (max. 20 %)
Sulfuryl chloride SO
2
Cl
2
NaOH 8 - 10 % (max. 20 %)
Hydrochloric or hydrobromic
acids
HCI, HBr NaOH 8 - 10 % (max. 20 %)
Thionyl chloride SOCl
2
NaOH 8 - 10 % (max. 20 %)
Cyanuric chloride C
3
N
3
Cl
3
NaOH 8 - 10 % (max. 20 %)
Carbonic acid chloride R-COCI NaOH 8 - 10 % (max. 20 %)
Ammonia NH
3
HCI max. 15 % / H
2
SO
4
max. 20 %
Nitrous oxides (nitrous gases)
Nitric acid / aqua regia
NO
X
NaOH 20 % FeSO
4
saturated
Chlorine, bromine, iodine Cl
2
, Br
2
, J
2
NaOH 8 - 10 % (max. 20 %) FeSO
4
saturated
Thiophenols Ar-SH NaOH 8 - 10 % (max. 20 %) KMnO
4
saturated
Thioalcohols, mercaptan R-SH NaOH / javelle water KMnO
4
saturated
Hydrogen sulphide H
2
S NaOH 8 - 10 % (max. 20 %) KMnO
4
saturated
Carbon disulphide CS
2
NaOH 8 - 10 % (max. 20 %) KMnO
4
saturated
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