Methane-circulating retort capable of handling 500 to 1,000 tons of oil shale daily

Abstract

The invention discloses a process and a device for refining oil by dry distillation of oil shale. The process is characterized in that methane generated in the dry distillation process of the oil shale can be repeated used as a hot carrier in the dry distillation of the oil shale. The retort for realizing the dry distillation oil refining process is characterized in that: the retort has a vertical round-square structure, namely the cross section of the upper part is round, the cross section of the lower part is square, and the inside diameters of the upper and lower parts are the same; and array umbrellas, a herringbone baffle plate, a device shaped like a Ding(ancient cooking vessel of China) or in an Asi structure, an air distribution and material distribution tracery wall, a coke discharging tank, a cooling water jacket, a water seal pool, a coke pushing machine and a scraper conveyor are arranged in the retort from top down in turn. The daily handling capacity of the retort is 500 to 1,000 tons. The invention is suitable for refining oil by dry distillation of oil shale with low methane content, low solid carbon content, low water content and a particle size of 5 to 75 milliliters, and the recovery rate of the oil is 85 to 90 percent.

Description

technical field [0001] The invention relates to a process and a device for dry distillation and oil refining of oil shale by applying the gas full cycle technology. Background technique [0002] Shenyang Chengda Hongsheng Energy Research Institute Co., Ltd. once applied for the utility model patent of "300 tons of oil shale gas full-circulation retort furnace for daily processing" on September 16, 2008. The National Patent Office granted the utility model patent on September 23, 2009 after review, with the patent number : ZL200820015869.3; On November 20, 2008, the State Patent Office applied for "300 tons of oil shale gas full cycle dry distillation process per day" and granted the invention patent on May 12, 2010 after examination, the patent number: ZL200810228891.0. According to the above patented technology, the industrial production device "300 tons of oil shale gas full cycle retort furnace" (hereinafter referred to as "300 tons retort furnace") has been built in good...

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Problems solved by technology

This problem seems to be simple, but it is actually very difficult. Fushun type retort furnace wants to increase the processing capacity from 100 tons to more than 200 tons. failed to achieve

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