FEOL of Ammonia synthesis

Gas analysis in the petrochemical production process, which has high requirement to the measurement accuracy, explosion safety, quick response and long-term reliability of the complete on-line analysis system, and the interference of background gas on the measurement gas should also be considered.

 

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On-line gas analysis system diagram

FEOL process of Ammonia synthesis

Gas detect points of ammonia synthesis gas and analysis instrument configuration table

Item

Detect point

Measured gas

Typical range

Analysis Instrument

1

Oxygen producing section ( Analysis of O2 )

O2

0 ~ 2000 ppm

SY-HG3300-DH / DHEx

2

Oxygen producing section ( Analysis of O2 )

O2

0 ~ 100 %

SY-HG3300-CY / DHEx

3

Gas holder inlet (Analysis of O2 content )

O2

0 ~ 1 / 3%

SY-HG3300-CJ / DHEx

4

Desulfurization section ( Analysis of O2 )

O2

0 ~ 2 %

SY-HG3300-CJ / DHEx

5

Desulfurization section ( Analysis of H2 )

H2

0 ~ 60 %

SY-HG3300-RQD / RQDEx

6

Desulfurization section ( Analysis of CO )

CO

0 ~ 40 %

SY-HG3300-GXH / GXHEx

7

Outlet of Medium-temperature conversion furnace

( Analysis of CO )

CO

0 ~ 5 / 10%

SY-HG3300-GXH / GXHEx

8

Outlet of Low temperature conversion furnace

( Analysis of CO )

CO

0 ~ 1 / 3%

SY-HG3300-GXH / GXHEx

9

Outlet of Desulfurization (Analysis of CO2 )

CO2

0 ~ 1 %

SY-HG3300-GXH / GXHEx

10

Inlet of synthetic tower ( Analysis of CO )

CO

0 ~ 10 / 300 ppm

SY-HG3300-GXH / GXHEx

11

Inlet of synthetic tower ( Analysis of CO2 )

CO2

0 ~ 10 / 200 ppm

SY-HG3300-GXH / GXHEx

12

Inlet of synthetic tower ( Analysis of CH4 )

CH4

0 ~ 3 / 25%

SY-HG3300-GXH / GXHEx

13

Analysis of fresh gas H2

H2

0 ~ 80 %

SY-HG3300-RQD / RQDEx