Production of Synthesis Production of Synthesis from Natural Gas by Steam from Natural Gas by Steam

ReformingReforming

Hysys SimulationHysys Simulation Presented ByPresented By : :

Beshayer Al-DihaniBeshayer Al-Dihani Hessa Al-Sahlawi Hessa Al-Sahlawi Latifa AL-QabandiLatifa AL-Qabandi

Supervised By:Supervised By: Prof. Mohamed A. FahimProf. Mohamed A. Fahim

Eng. Yusuf Ismail AliEng. Yusuf Ismail Ali

AgendaAgenda

HYSYS descriptionHYSYS description

Section 100:(Steam reforming and Heat Section 100:(Steam reforming and Heat recovery sectionrecovery section))

Section 200 (Carbon Dioxide Section 200 (Carbon Dioxide Separation)Separation)

Section 300 (Hydrogen Skimming)Section 300 (Hydrogen Skimming)

HYSYS descriptionHYSYS description::we selected our componentswe selected our components

The fluid packages are chosenThe fluid packages are chosen, , ping-Robinson and Amine ping-Robinson and Amine

PackagePackage..

Then we added our reaction in Then we added our reaction in

reaction tabreaction tab

Where: Rxn-1: CHWhere: Rxn-1: CH44 + 2O + 2O22 CO CO22 + 2H + 2H22OO Rxn-2: CHRxn-2: CH44 + H + H22O O CO + 3H CO + 3H22

Rxn-3: 3CHRxn-3: 3CH44 + 2H + 2H22O + COO + CO22 4CO + 8H 4CO + 8H22

Section 100:(Steam reforming and Heat Section 100:(Steam reforming and Heat recovery sectionrecovery section))-:-:

AssumptionAssumption::11 - -In section 100, we replaced the H2S Adsorber In section 100, we replaced the H2S Adsorber

with component splitter [C-101A&B] because with component splitter [C-101A&B] because in HYSYS there is no adsorber columnin HYSYS there is no adsorber column..

22 - -We used two reactors for steam reformer, one We used two reactors for steam reformer, one

worked as conversion reactor where worked as conversion reactor where combustion reaction [Rxn-1] take place then we combustion reaction [Rxn-1] take place then we used the heat produced from it as a heat input used the heat produced from it as a heat input for the second reactor which was equilibrium for the second reactor which was equilibrium reactor where our man reactions take place [Rxn-reactor where our man reactions take place [Rxn-2,Rxn-3]2,Rxn-3]..

33 - -We used coolers [E-104.] and [E-110] because we We used coolers [E-104.] and [E-110] because we

had a temperature cross problemhad a temperature cross problem..

44 - -We did compressor [K-103] in two stages, in the We did compressor [K-103] in two stages, in the first stage (Recy CO2 stream) was mixed in first stage (Recy CO2 stream) was mixed in mixer [Mix-101]. And in the second stage (water3 mixer [Mix-101]. And in the second stage (water3 stream) where recycled to mixer [Mix-101]stream) where recycled to mixer [Mix-101]..

It’s necessary to remove sulfur components down to such low level because the removing catalyst is highly sensitive to sulfur poisoning.The flow rate was:

Steam ReformingSteam Reforming is consists of is consists of Convection section and Radiation Convection section and Radiation sectionsection::

The flow rates are:

In heat recovery units are shown In heat recovery units are shown

belowbelow::

Section 200 (Carbon Section 200 (Carbon Dioxide Separation)Dioxide Separation)::

AssumptionsAssumptions In section 200, the absorber [C-201] was In section 200, the absorber [C-201] was

worked by Amine Pkg as a fluid package worked by Amine Pkg as a fluid package because we had MDEA solution, and this because we had MDEA solution, and this column had 95 numbers of stages.column had 95 numbers of stages.

We used valve [VLV-100] & [VLV-101] to We used valve [VLV-100] & [VLV-101] to minimize the pressure.minimize the pressure.

Stripper column [C-203] is actually absorber Stripper column [C-203] is actually absorber because in HYSYS there is no stripper because in HYSYS there is no stripper column, since Amine Pkg did not work with column, since Amine Pkg did not work with us we used Peng Roberson Pkg here, and us we used Peng Roberson Pkg here, and this column had 10 numbers of stages. this column had 10 numbers of stages.

We used component splitter [X-We used component splitter [X-102] to minimized flow rate of 102] to minimized flow rate of water.water.

Because the loss in MDEA Because the loss in MDEA solution we added make up solution we added make up amine in mixer [MIX-105], and to amine in mixer [MIX-105], and to reduce the loss from the flash reduce the loss from the flash column [C-202] we added CO2 column [C-202] we added CO2 make up. make up.

Absorber Absorber ColumnColumn

Section 300 (Hydrogen Section 300 (Hydrogen Skimming)Skimming)::

AssumptionAssumption

We modified this section as follow:We modified this section as follow:- - We used two flash columns , one acted We used two flash columns , one acted

as demister to absorb the liquid , the as demister to absorb the liquid , the other one [V-104] acted as separator other one [V-104] acted as separator to separate the liquid from the vapor.to separate the liquid from the vapor.

- We replaced the membrane [ prism - We replaced the membrane [ prism separator ] in actual design with separator ] in actual design with component splitter [ X-101 ] in our component splitter [ X-101 ] in our design to get the final productdesign to get the final product..

Thank YouThank You