Device and method for preparing gasoline by using oxygenated compound

Abstract

The invention discloses a device for preparing gasoline by using an oxygenated compound, and belongs to the field of petrochemical engineering. The device comprises reactors, a regenerator, an external catalyst cooler and a spent stripper, wherein the reactors comprise a first reactor, a second reactor and a riser reactor; the regenerator is connected with the riser reactor through a regenerationslide valve; the riser reactor stretches into the first reactor; the first reactor communicates with the second reactor; the external catalyst cooler is arranged in the second reactor; a spent catalyst circulation pipe is arranged between the first reactor and the second reactor; and the first reactor and the second reactor are arranged coaxially and are parallel to the regenerator. By adopting the device provided by the invention, the selectivity of target products such as the selectivity and the yield of gasoline or aromatic hydrocarbon products can be improved maximally; the problems of high bed and fluidization difficulty of catalysts in the reactors and the regenerator are solved, and a fluidized state is maintained; and the requirement on MTG process reaction regeneration conditionscan be met.

Description

technical field [0001] The invention relates to the technical field of preparing hydrocarbons from one or several non-hydrocarbon compounds, in particular to a device and method for preparing gasoline from oxygen-containing compounds. Background technique [0002] Methanol is not only an important chemical product and chemical raw material, but also one of the future clean energy sources. As a key chemical product, methanol is the best way to produce other chemical products or synthetic fuels from natural gas or coal, and its importance is self-evident. Although methanol can be directly blended into gasoline as methanol gasoline fuel, it is more economical to convert it directly into gasoline than to blend it into gasoline. Therefore, the successful development and industrial application of methanol-to-gasoline technology not only alleviates the domestic oil shortage and methanol surplus, but also enriches the technical route of coal-to-oil, which has important strategic an...

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Problems solved by technology

[0010] The invention provides a device and method for producing gasoline from oxygenated compounds, which are suitable for the high temperature, pressurized, strong heat release, high conversion rate requirements and product selectivity requirements of the gasoline production process from oxygenated compounds, so as to solve the current problems. There are problems such as high catalyst bed layer, difficult fluidization and different gas circulation requirements in the technology, so as to maximize the advantages of each reaction and improve the selectivity of the target product

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