Methanol synthesis process

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

Methanol synthesis process

Gas detect points of Methanol synthesis process and analysis instrument configuration table

Item

Detect point

Measured gas

Typical range

Analysis Instrument

1

Synthesis gas ( Analysis of CO )

CO

0 ~ 20 / 50 %

SY-HG3300-GXH / GXHEx

2

Synthesis gas ( Analysis of CO2 )

CO2

0 ~ 5 / 15 %

SY-HG3300-GXH / GXHEx

3

Synthesis gas ( Analysis of H2 )

H2

0 ~ 90 / 100 %

SY-HG3300-RQD / RQDEx

4

Fresh gas ( Analysis of CO )

CO

0 ~ 40 / 50 %

SY-HG3300-GXH / GXHEx

5

Fresh gas ( Analysis of CO2 )

CO2

0 ~ 5 / 10 %

SY-HG3300-GXH / GXHEx

6

Fresh gas ( Analysis of H2 )

H2

0 ~ 90 %

SY-HG3300-RQD / RQDEx

7

Recycle gas (Analysis of CO )

CO

0 ~ 10 %

SY-HG3300-GXH / GXHEx

8

Recycle gas (Analysis of CO2 )

CO2

0 ~ 5 %

SY-HG3300-GXH / GXHEx

9

Recycle gas (Analysis of H2 )

H2

0 ~ 100 %

SY-HG3300-RQD / RQDEx

10

Recycle gas (Off-line analysis of CH4 )

CH4

0 ~ 10 %

SY-HG3300-GXH / GXHEx

 

Gas detect points of Methanol synthesis gas produced with coal and analysis instrument configuration table

Item

Detect point

Measured gas

Typical range

Analysis Instrument

1

On-line Analysis of CO2

CO2

0 ~ 1000 ppm

SY-HG3300-GXH / GXHEx

2

Analysis of dew point water content

H2O

0 ~ 50 ppm

SY-HG3300-DP / DPEx

3

Outlet of scrubbing tower

Synthesis gas ( Analysis of CH4 )

CH4

0 ~ 2000 ppm

SY-HG3300-GXH / GXHEx

4

Outlet of scrubbing tower

Synthesis gas ( Analysis of CO )

CO

0 ~ 50 / 60 %

SY-HG3300-GXH / GXHEx

5

Outlet of scrubbing tower

Synthesis gas ( Analysis of CO2 )

CO2

0 ~ 20 / 30 %

SY-HG3300-GXH / GXHEx

6

Outlet of scrubbing tower

Synthesis gas ( Analysis of H2 )

H2

0 ~ 20 / 60 %

SY-HG3300-RQD / RQDEx

7

Outlet of scrubbing tower

Synthesis gas ( Analysis of O2 )

O2

0 ~ 2000 ppm / 2%

SY-HG3300-CJ / DHEx

8

Outlet of scrubbing tower

Synthesis gas ( Analysis of H2S )

H2S

0 ~ 1 %

PGC2000 / PGC5000

9

Purified gas at outlet ( Analysis of CO2 )

CO2

0 ~ 16 / 50 ppm

PGC2000 / PGC5000

10

Purified gas at outlet ( Analysis of CO2 )

CO2

0 ~ 6 / 10 %

SY-HG3300-GXH / GXHEx

11

Purified gas at outlet ( Analysis of total sulphur content )

TS

0 ~ 0.25 / 1.5 ppm

PGC2000 / PGC5000

12

Cooling water of burner nozzle ( Analysis of CO )

CO

0 ~ 10 / 200 ppm

SY-HG3300-GXH / GXHEx

13

Shift gas ( Analysis of CO )

CO

0 ~ 30 / 50 %

SY-HG3300-GXH / GXHEx