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Process Selection and Specifications

CATALYTIC HYDROGENATION

Temp. (°C): 350

Press. (bar): 40

Catalyst: WS2

Assumptions: 

  1. C10H8 Converion = 90%

DESULFURIZATION

Temp. (°C): 650

Press. (bar): 30

Adsbt: ZnO

Assumptions:

  1. H2s Absorbed = 100%

PRIMARY REFORMER

Temp. (°C): 530

Press. (bar): 75

Catalyst: HY Zeolite

Assumptions:

  1. C10H8 Conversion = 90%

  2. C10H12 Conversion = 85%

  3. C10H18 Conversion = 17%

  4. Selectivity of H2 = 2

  5. R of H20 to C10H8 - 16

Design Const.:

  1. Large Pressure difference 

  2. Low Conversion of Decalin

SECONDARY REFORMER

Temp. (°C): 900

Press. (bar): 30 

Catalyst: HY Zeolite

Assumptions:

  1. C10H8 Conversion = 90%

  2. C10H12 Conversion = 85%

  3. C10H18 Conversion = 17%

  4. Selectivity of H2 = 2

  5. R of H20 to C10H = 3.5 

Design Const.: 

  1. Low Conversion of Decalin

  2. No O2 to Heavy Hydrocarbon ratio

HTSC

Temp. (°C):  400 

Press. (bar): 300

Catalyst: Ni-Ce(La)Ox

Assumptions:

  1. CO Conversion = 98%

  2. H20 to CO R = 5

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LTSC

Temp. (°C): 250

Press. (bar): 30

Catalyst: Cu-Ce(La)Ox

Assumptions:

  1. CO Conversion = 95%

  2. H2O/CO R = 5

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CO2 Absorber 

Temp. (°C): 250

Press. (bar): 300 

Absbt: Solvent

Assumptions:

  1. CO Conversion = 100%

  2. K2CO3 per mol = 0.42

  3. H2O mol per mol = 0.58

  4. H2O capture bottom = 66%

  5. CO2 capture outlet = 34%

​

Meth Unit

Temp. (°C): 280 

Press. (bar): 30

Catalyst: Ni/Al2O3

Assumptions:

  1. N2 Conversion = 30%

  2. CO Conversion = 100%

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Ammonia Reactor 

Temp. (°C): 450 

Press. (bar): 300

Catalyst: Fe/Al2O3 

Assumptions:

  1. N2 Conversion = 30%

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Partial Condenser

Temp. (°C): -100

Press. (bar): 5

Assumptions:

  1. TDP (NH3) = -59.7 C

  2. TDP (H2O) = 71 C

Liquid-Vapor Separator

Temp. (°C): 17

Press. (bar): 2

Assumptions:

  1. TBP (NH3) = -57.3 C

  2. TBP (H2O) = 91.7 C

Partial Condenser 2

Temp. (°C): -70

Press. (bar): 2

Assumptions:

  1. TDP (NH3) = -18.96 C

  2. TDP (H2O) = 26.3 C

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Pressure Swing Adsorber

Temp. (°C): 150

Press. (bar): 200

Assumptions:

  1. Percent recovery NH3 = 99.72 

  2. NH3 mol per mol at recycle = 0.9956

Splitter (R and P)

Temp. (°C): 30

Press. (bar): 1.5

Assumptions:

  1. Percent recycle = 50

  2. Percent purge = 50 

Storage Unit (NH3)

Temp. (°C): -33

Press. (bar): 1.1

Assumptions:

  1. N/A

Storage Unit (Purge)

Temp. (°C): -33

Press. (bar): 1.1

1. N/A

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