Method and equipment for producing liquid fuel oil by catalytically modifying methanol fuel and waste oil

Abstract

The invention relates to a method and equipment for producing liquid fuel oil by catalytically modifying methanol fuel and waste oil. The method disclosed by the invention comprises the following steps of: heating methanol fuel and waste oil; guiding the heated methanol fuel and waste oil into a pyrolysis pipeline; introducing hot steam into the pyrolysis pipeline, heating the pyrolysis pipeline in a heating environment; guiding the gasified raw materials in a catalyst bed layer molecular sieve through the pyrolysis pipeline so that the gasified raw materials are catalytically modified, composited and dehydrated; and cooling to obtain low-carbon biological liquid fuel oil. The equipment disclosed by the invention is of a reaction tower type structure; an oil gas outlet is arranged at the top of a reaction tower; a steam cap equalizer and the bed layer molecular sieve are arranged at the upper end of the reaction tower; a heating chamber and a steam generation chamber are arranged at the bottom of the tower; and the pyrolysis pipeline is spirally arranged at the middle part of the tower. According to the method, vehicular gasoline and diesel are prepared from methanol fuel and biological waste oil through gas hot steam, catalytic modification; the octane number of methanol gasoline is increased by 3-5; the cetane number of methanol diesel is increased by 6-9; and the oil quality and the power attribute of methanol biological liquid fuel are improved.

Description

Technical field [0001] The patent of the present invention relates to a technology for preparing liquid fuel oil using methanol fuel, waste grease, etc. as raw materials. Background technique [0002] Methanol fuel converted from coal is a kind of clean energy, but due to the high latent heat of vaporization of methanol, the low temperature starting performance of methanol fuel is poor; methanol and gasoline mix to form an azeotrope. When the ambient temperature is high, methanol gasoline is in the oil. Air blockage is easy to form in the road, causing poor vehicle fuel supply; incomplete combustion of methanol fuel can easily form unconventional pollutant emissions, among which formaldehyde emissions are higher than those of conventional gasoline vehicles, which can easily cause vehicle three-way catalyst poisoning; in addition, methanol fuel There are problems such as low calorific value, corrosiveness, acidified lubricating oil, etc. In view of the above reasons, people have ...

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Problems solved by technology

[0002] Methanol fuel converted from coal is a clean energy, but due to the high latent heat of vaporization of methanol, the low-temperature starting performance of methanol fuel is poor; methanol and gasoline are mixed to form an azeotrope. Air blockage is easy to form on the road, resulting in poor fuel supply for vehicles; incomplete combustion of methanol fuel is likely to form unconventional pollutant emissions, among which formaldehyde emissions are higher than those of conventional gasoline vehicles, which is likely to cause poisoning of the three-way catalytic converter of vehicles; in addition, methanol fuel There are problems such as low calorific value, corrosion, and acidified lubricating oil. In view of the above reasons, people have been studying the method of converting methanol fuel into fuel oil

At present, the technology of producing low-carbon biological liquid fuel oil (biodiesel, diesel, fuel oil, bioalcohol oil, etc.) through modified catalytic cracking of methanol fuel, biological waste oil and industrial waste oil is still being explored at home and abroad. At the stage, the technology is not mature enough, there is no finalized equipment, basically the distillation catalytic cracking method is adopted, the oil vapor and macromolecular substances produced by catalytic cracking are mixed together, the catalytic cracking effect is not good, the oil quality is poor, and at the same time Cause environmental pollution, basically no economic return, and there is also the problem of low thermal efficiency of oil products

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