Gas distillation process employing heat pipe heating oil shale

Abstract

The invention discloses a gas distillation process employing a heat pipe heating oil shale. The gas distillation process is characterized by comprising a circulating gas heating process, a high-temperature flue gas cooling process, treatment of carbon deposit and treatment of soot formation, wherein the circulating gas heating process is alternately switched first circulating gas heating process or second circulating gas heating process; a high-temperature circulating gas subjected to heat treatment is conveyed to a dry distillation furnace; the high-temperature flue gas cooling process is alternately switched first high-temperature flue gas cooling process or second high-temperature flue gas cooling process; the flue gas, which is subjected to cooling treatment, of a high-temperature flue gas of a combustion furnace is discharged into a smoke extraction system; and carbon deposit treatment and soot formation treatment are carried out on a high-temperature heat pipe heater in an alternately switching manner, so that the gas distillation process has the advantages of being reasonable in technological process, convenient to operate, low in fault rate, high in oil shale distillation efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of dry distillation of oil shale gas heat carrier and is a heat pipe heating type oil shale dry distillation gas [0002] craft. Background technique [0003] Oil shale is a kind of sedimentary rock with an inorganic mineral skeleton and contains solid organic matter, mainly kerogen and a small amount of asphaltene. Shale oil can be obtained from oil shale by low-temperature dry distillation (about 550°C). Shale oil is similar to crude oil and can be made into gasoline, diesel or as fuel oil. Therefore, it can replace petroleum and become a powerful supplement to petroleum resources. [0004] There are many types of oil shale retort furnaces, which can be divided into gas heat carrier retort furnaces and solid heat carrier retort furnaces according to the different heating carriers used. At present, the gas heat carrier carbonization furnace is mainly put into operation in China. The gas heat carrier of a...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of carbon deposits clogging pipes existing in the existing circulating gas heating furnace, and propose a method of using heat pipe heat exchange technology in the circulating gas heating system to improve the thermal efficiency of the heating system, and through the switching operation of two sets of high-temperature heaters, Carbon deposition treatment can be carried out regularly to avoid carbon deposition in the heat pipe heating oil shale dry distillation gas process

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