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An overview of methanol production from synthesis gas, including raw materials, reactions involved, process flowsheet, major engineering problems, advantages, disadvantages, and applications. It also mentions the thermodynamic and kinetic considerations of synthesis gas, reactor design, catalyst fouling, and inert gas accumulation.
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Methanol From Synthesis Gas Department of Chemical Engineering Malaviya National Institute of Technology Jaipur, Rajasthan - 302017 Submitted To: Dr. Rajeev Kumar Dohare (Associate Professor) Submitted By: Sharwan Singh(2019UCH1442)
Quantitative Raw Material Requirements:
Reactions Involved: a) CO + 2H 2
3 OH; H = -26.4 Kcal b) Side reactions to Methane CO + 3H 2 ⇌ CH 4 + H 2 O; H = -50 Kcal 2CO + 2H 2
4
2 ; H = -60.3 Kcal CO + H 2
2
2 ; (water gas shift reactions) c) Side reaction to higher mol. wt. compounds xCO + yH 2 higher mol. wt. alcohols and hydrocarbons
Major Engineering Problems A) Thermodynamic and kinetic considerations of synthesis gas: Under optimum conditions, a 50% conversion per pass at 240 atms, and 300°C.
B) Reactor Design: Thick-walled pressure vessels are constructed of relatively cheap steel, but must be lined with Cu to avoid the formation of iron carbonyl Fe(CO) 5 , a volatile compound which poision the catalyst. Heat exchange to control the highly exothermic reaction in counter current flows.
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