High-capacity oil shale dry distillation cylindrical furnace with star-shaped arch style gas distribution device

Abstract

The invention discloses a high-capacity oil shale dry distillation cylindrical furnace with a star-shaped arch style gas distribution device. The furnace comprises a furnace body, wherein an oil gas outlet header, a compound array umbrella material distribution device, a hot gas distribution pipe and a cold gas distribution pipe are arranged in the furnace body from top to bottom in sequence, the compound array umbrella material distribution device comprises a feeding pipe, and the feeding pipe penetrates through the oil gas outlet header to be connected with the discharging end of a spiral feeder; a center array umbrella is installed below the feeding pipe through a suspension rod, a plurality of surrounding array umbrellas are installed around the center array umbrella through suspension rods, and the center array umbrella and the surrounding array umbrellas are communicated with the oil gas outlet header through air guiding pipes respectively; the two ends of the hot gas distribution pipe penetrate through the two sides of the furnace body to be connected with hot gas inlet headers, and the two ends of the cold gas distribution pipe penetrate through the two sides of the furnace body to be connected with cold gas inlet headers. According to the furnace, oil yield is about 85-95%, discharged semicoke heats circulating gas through combustion of a circulating fluidized bedboiler, energy is utilized, and gas is distributed more uniformly.

Description

technical field [0001] The invention relates to a star-shaped arch gas distribution device, in particular to a large-capacity oil shale retort circular furnace with a star-shaped arch gas distribution device. Background technique [0002] Oil shale is a resource that is abundant but not well utilized. The oil shale in the world is converted into more than 400 billion tons of shale oil, which is far more than the world's proven crude oil reserves of more than 170 billion tons. my country's oil shale is predicted to be as high as 719.9 billion tons, which translates to 47.6 billion tons of shale oil resources. [0003] The existing domestic oil shale retort equipment is mainly based on the gas heat carrier retort method, mainly including Fushun semi-gas-fired retort furnace, Maoming all-gas-fired retort furnace and Huadian retort furnace. [0004] When Fushun semi-gas-fired retort furnace retorts shale, the required heat source comes from circulating hot gas and gasification...

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a large-capacity oil shale retort circular furnace with a star-shaped arch gas distribution device, on the one hand, it avoids a large amount of nitrogen and carbon dioxide contained in the gas of Fushun semi-gas-fired retort furnace and Maoming all-gas-fired retort furnace On the other hand, it solves the problems of the distribution uniformity of the Huadian retort furnace, the uniformity of the gas distribution, and the unsatisfactory calorific value of the semi-coke discharged.

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