Buchi Scrubber K-415 Bedienungsanleitung Seite 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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