Oil shale dry distillation system

Abstract

The invention relates to an oil shale dry distillation system. A distribution system of the oil shale dry distillation system is communicated with a reaction furnace through a related conveying output pipeline; the reaction furnace is communicated with a dry distillation gas circulating system through a control system and the related conveying output pipeline; and the dry distillation gas circulating system is communicated with a cooling system through the related conveying output pipeline. The oil shale dry distillation system can finish crushing, screening, furnace charging, heating, collection of shale dry distillation gas, cooling and collection of shale carbocoal and the like; the distribution system of the oil shale dry distillation system positions large grain size oil shale on thelower part of a batch layer and small grain size oil shale on the upper part of the batch layer, solves the problems that small grain size particles are easy to leak out of a furnace grate and carbocoal particles are easy to be blocked in a gap of the furnace grate and cannot fall off, improves the utilization ratio of the oil shale, reduces the resistance of the batch layer, prevents powder in the batch layer from being carried off, and effectively reduce the dust content; besides, the oil shale dry distillation system reduces the carbocoal tapping temperature and improves the utilization efficiency of heat energy so that the carbocoal is convenient to process. The oil shale dry distillation system has the advantages of reasonable design, compact layout, reliable performance, low-carbon environmental protection and low running cost, and is easy for industrialized extraction of shale oil.

Description

technical field [0001] The invention belongs to the technical field of extracting shale oil from oil shale, and relates to an oil shale carbonization system. Background technique [0002] Oil shale is an important potential energy source with huge reserves. Among fossil fuels, its reserves are converted into calorific value and rank second only to coal. If it is converted into shale oil, the world's oil shale reserves are about 475 billion tons, equivalent to several times the proven recoverable reserves of natural crude oil in the world. The development and application of oil shale has a history of more than 200 years, and the development and utilization of oil shale energy mainly lies in the production of shale oil. [0003] During the Second World War, due to the sharp increase in oil demand and the sharp rise in oil prices, many countries experienced an upsurge in oil shale development. In peacetime after World War II, due to the discovery and massive development of ch...

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Problems solved by technology

[0011] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a method that can complete the crushing, screening, furnace loading, heating, collection of shale retort gas, cooling and collection of shale semi-coke to obtain more oil shale. The oil shale carbonization system with good technical performance solves the problem that many small-sized particles contained in the oil shale raw material are easy to leak from the grate and the semi-coke particles are easy to get stuck in the gap of the grate without falling off, further reducing the heat load When the gas passes through the oil shale material layer in the furnace, the amount of powder in the material layer is entrained to reduce the dust content of the retort gas and reduce operating costs

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