Kinetic Understanding of the Syngas-to-DME Reaction System and Its Implications to Process and Economics

Kinetic Understanding of the Syngas-to-DME Reaction System and Its Implications to Process and Economics - December 2002

Abstract				2
1	Introduction			4
2	Details of Experiments and Simulations			6
3	Kinetic Understanding			8
	3.1	The Relative Rate of Each Reaction and Their Roles in the Synergy		8
	3.2	The Best Gas Composition for the LPDMETM Process		16
		3.2.1	A General Approach for Analysis of the Best Reactor Feed - Two-Term Approach	17
		3.2.2	Illustration of the Approach Using a Single Reaction System with Power-Law Rate Expression	19
		3.2.3	Application to Syngas-to-Methanol Reaction System	24
		3.2.4	The Best Feed Composition for the Syngas-to-DME Reaction System	28
		3.2.5	Discussion	32
4	The Schemes of the Syngas-to-DME Process Based on the Best Reactor Feed			34
	4.1	Simulation Details		35
	4.2	Selection of a Recycle Scheme and Overall Reaction		35
	4.3	Dependence of DME Productivity and Material Utilization on the Feed Gas Composition in the Chosen Recycle Case		36
	4.4	Integration between the Syngas-to-DME Reactor and Syngas Generation Units		38
		4.4.1	Syngas-to-DME + CO₂ Methane Reformer	39
		4.4.2	Syngas-to-DME + CO₂ Methane Reformer + Coal Gasifier	41
		4.4.3	Syngas-to-DME + Steam Methane Reformer + H₂ Product	43
		4.4.4	Syngas-to-DME + Methane Partial Oxidation	44
	4.5	Discussion		46
5	Operating Regimes for the Syngas-to-DME Process and Economical Implications			47
References				51