Process for preparing liquefied propane gas and gasoline with high octane value from plant fibres

A plant fiber and liquefied gas technology, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, can solve the problems of high cost, complicated process, and lack of practical promotion and application, and achieve less impurities, extensive resources, and low cost. Effect

Inactive Publication Date: 2002-07-24
丛大拥
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Problems solved by technology

Brazil SaSOI Company in South Africa uses sugarcane as raw material to generate methanol and then applies MTG metho

Method used

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Examples

Experimental program
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Embodiment 1

[0026] Take corn stalks, crush them into granules and mix them with auxiliary material anthracite, dry at 105°C to 115°C to remove internal moisture, put 100kg of dried straw and 22kg of anthracite into a vacuum retort at a temperature of 300°C to Gradient temperature rise at 500°C for cracking reaction, the reaction time is 2.5 minutes, and 1m 3 Mixed combustible gas, 30% of which is propane gas and 70% is CO gas.

[0027] CO was separated at one time by PSA four-bed pressure swing adsorption method. Process operating conditions: raw material gas temperature is 50-80, pressure is 0.1-0.5Mpa, CO decompression recovery pressure is 6-13Kpa, adsorption cycle is 12-20min, flushing gas ratio (flushing amount / raw material amount) is 0.3-0.7. The purity of the CO product is 98-99%, and the recovery rate is greater than 80%.

[0028] 60% of the separated CO is added with excess steam at a temperature of 400-480°C under the action of a catalyst to react to generate hydrogen and carbo...

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Abstract

A process for preparing liquefied propane gas and gasoline with high octane value includes vacuum dry distilling-cracking reaction of plant fibres (corn stalk, rice straw, reed, etc) to generate the gas mixture of CO and propane, pressure-swing adsorption to separate CO from said gas mixture, generating and purifying hydrogen gas, recovering CO2, preparing liquefied propane gas, synthesizing methanol from resultant CO, CO2 and H2, and preparing gasoline. Its advantages are high purity and low cost.

Description

Technical field: [0001] The invention discloses a method for preparing propane liquefied gas and high-octane gasoline by utilizing plant fibers, and relates to the technical field of converting plant fibers into hydrocarbon fuels. Background technique: [0002] In my country, the use of dry distillation to produce civil combustible gas from plant fibers (such as corn stalks, straw, reeds, etc.) through dry distillation kettles has been applied. Due to the chemical reaction under normal pressure, the generated combustible gas components are relatively complex. for CO, CO 2 , nitrogen, hydrogen, methane and other gases, but there is no propane component, although the calorific value of methane is 39.819MJ / m 3 , but with propane calorific value (101.242MJ / m 3 ) is very different, and the mixed gas also contains about 10% inert nitrogen, which seriously affects the combustion quality of combustible gas; [0003] In the world, the fermentation method is used to make methanol fr...

Claims

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Application Information

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IPC IPC(8): C10G1/00
Inventor 丛大拥
Owner 丛大拥
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