Large-capacity oil shale carbonization circular furnace with star-shaped arch gas distribution device

Abstract

The invention discloses a large-capacity oil shale retort circular furnace with a star-shaped arch gas distribution device. The air distribution pipe and the cold gas distribution air pipe, the composite umbrella distribution device includes a feed pipe, the feed pipe passes through the oil and gas outlet header and is connected to the discharge end of the screw feeder, and a hanging rod is installed under the feed pipe The center umbrella, the center umbrella is surrounded by a number of surrounding arrays installed through the hanging rod, the central array and the surrounding arrays are connected to the oil and gas outlet header through the air duct, and the two ends of the hot gas distribution pipe pass through the two sides of the furnace body A hot gas intake header is connected, and the two ends of the cold gas distribution pipe pass through both sides of the furnace body to be connected with a cold gas intake header. The oil yield of the present invention is about 85%-95%, and the discharged semi-coke is combusted by a circulating fluidized bed boiler to heat and circulate gas so that energy can be utilized and the gas distribution is more uniform.

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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