Chapter 5Syngas Production Process
Syngas Production Process Chapter 5
5.1IntroductionSynthesis gas (or syngas) is a general term used todescribe mixtures of hydrogen (H2)and carbonmonoxide (CO) in various ratios. These mixtures areused as such and are also sources of pure hydrogen andpure carbon monoxide.Syngas may be produced from a variety of rawmaterials ranging from naturalgas, coal, fractions ofgasoline, agriculture and forestry wastes, urbangarbage,etc
5.1 Introduction Synthesis gas (or syngas) is a general term used to describe mixtures of hydrogen (H2) and carbon monoxide (CO) in various ratios. These mixtures are used as such and are also sources of pure hydrogen and pure carbon monoxide. Syngas may be produced from a variety of raw materials ranging from natural gas, coal, fractions of gasoline, agriculture and forestry wastes, urban garbage, etc
Syngas production method一(1)Production method fromcoalasraw materialsPartial oxidation of coal (gasification)with steam and oxygen.(2)Production method from naturalgas as raw materialsSteam reforming of naturalgas(3)Productionmethodfromheavy oilorresidual oilasrawmaterialsPartial oxidation of (heavy) hydrocarbon with steam and oxygen
一、Syngas production method (1) Production method from coal as raw materials Partial oxidation of coal (gasification) with steam and oxygen. (2) Production method from natural gas as raw materials Steam reforming of natural gas (3) Production method from heavy oil or residual oil as raw materials Partial oxidation of (heavy) hydrocarbon with steam and oxygen
二、 Examplesfor syngasapplication1.Main industrialized products(1) Ammonia synthesisIron based catalystN2 + 3H2 2NH3500-600℃,17.5-20MPa(2)MethanolsynthesisCO + 2H2-- CH3OHCopper based catalyst260-270℃C,5-10MPa
二、Examples for syngas application 1. Main industrialized products (1) Ammonia synthesis (2) Methanol synthesis Iron based catalyst 500-600℃, 17.5-20MPa Copper based catalyst 260-270℃, 5-10MPa
(3)AceticacidsynthesisCHOH+ CO - CHCOOHTransition metal (Co, Rh) carbonyl complex catalyst180℃,3-4MP(4)HydroformylationproductsofalkenesCHCH2CH2CHO+（CH322CHCHCCH3CHCH2 + CO + H2 -C2H4 + CO + H2CH3CH2CHOH2R(CH2)3OHRCH2CH2CHORCHCH2 + CO + H2-Transition metal carbonyl complex catalystFor example: HCo(CO)4 catalyst, 120-140C, 20MPaHRh(CO)(Ph3P)3, 100℃C, 1-2MPa
(4) Hydroformylation products of alkenes Transition metal carbonyl complex catalyst For example: HCo(CO)4 catalyst, 120-140℃, 20MPa HRh(CO)(Ph3P)3, 100℃, 1-2MPa (3) Acetic acid synthesis Transition metal (Co、Rh) carbonyl complex catalyst 180℃, 3-4MP