A dry distillation incinerator for oil shale dry distillation and shale semi-coke combustion

Abstract

The invention relates to destructive distillation and incineration furnace for destructive distillation of oil shale and burning of shale semicoke. In order to realize full-cycle destructive distillation of small-particle oil shale and complete burning of semicoke produced by the oil shale, a collecting port is formed in the inner side of a collecting channel in the wall of a preheating chamber, an exporting port is formed in the outer side, and a supporting arch bridge is arranged at the bottom of the preheating chamber; a gas injection port is formed in the inner side of a gas channel in the wall of a destructive distillation chamber, an importing port is formed in the outer side, and a supporting arch bridge is arranged at the bottom of the destructive distillation chamber; counter-rotating ratchet wheel coke feeders are arranged in a flow guiding chamber, and a flow guiding outlet is formed in the bottom; a discharge port is formed in an incineration chamber, a fine ash hopper communicated with the incineration chamber is arranged on the outer side, primary air nozzle pipes in importing grooves are connected with a primary air channel, and an importing pipe port is formed in the primary air channel; a water-cooled furnace grate is arranged in a cooling chamber, counter-rotating ratchet wheel residue removers are arranged in an ash residue discharge port in the bottom of a discharge chamber, and a secondary air introduction port is formed in the upper part. With the adoption of the furnace, the circulation flow of hot gas is effectively reduced, the calorific value of the gas is increased, the content of nitrogen in the gas is reduced, energy is saved, and consumption is reduced.

Description

technical field [0001] The invention relates to the field of dry distillation and gasification equipment, in particular to a kind of oil shale dry distillation and shale gasification equipment for completing the full-cycle dry distillation of extracting shale oil from granular oil shale and full combustion after generating semi-coke. Semi-coke burning dry distillation incinerator. Background technique [0002] In the shale oil production process, the retort furnace is the key equipment to complete the extraction of shale oil from oil shale through the retort process. At present, the most widely used one with the longest service life is the Fushun type retort furnace. It is a retort furnace type that integrates oil shale preheating, carbonization, combustion and gasification. Its retort process can realize the energy of the retort system itself. balance, and there is still residual gas (gas) waste heat (energy) available for use. At the same time, the shale oil extraction p...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of retort furnace is that the oil yield is not high, the flow rate of retort gas to be processed is relatively large and the calorific value of recovered gas is not high, so the investment cost and operating cost will increase accordingly

This makes the relatively simple process flow can not be effectively brought into play

If the full-cycle carbonization process is adopted, although the carbonization efficiency can be improved, the flow rate of the carbonization gas can be reduced, and the calorific value of the gas can be increased, the semi-coke after carbonization cannot be fully utilized, and its own energy balance also requires the addition of external energy, especially Especially in the case of low oil content of oil shale

Moreover, when the currently used oil shale carbonization furnace is used to process small particle raw materials with a particle size of less than 10mm, the corresponding process route is not mature and is still in the process of research and development

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