A new type of dry distillation furnace and its processing process for dry distillation of oil shale

Abstract

The invention relates to a novel dry distillation furnace for performing dry distillation on oil shale. The novel dry distillation furnace comprises a furnace body, wherein a material distribution structure is arranged in a dry distillation section in the furnace body; an arch table wind shoe structure is arranged in a generating section; a gas distribution structure is arranged at the bottom in the furnace body. The novel dry distillation furnace has the advantages that the dry distillation cross section intensity can be increased to a value being 1500kg / m<2> or more which is higher than that of the existing fushun 100t / d furnace; the raw material processing quantity can be obviously improved; the oil yield can be improved by 10 percent or higher; the novel dry distillation furnace can realize the amplified design of the processing capability exceeding 100t / d; the small-proportion adaptive processing of small-particle oil shale of 20mm or below 20mm can be realized to a certain degree; a novel path is opened for small-particle oil shale oil refining in China.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of oil shale, in particular to a dry distillation furnace device and a process for strengthening material and gas distribution systems during the dry distillation process. Background technique [0002] The existing oil shale dry distillation technology in China - the internal heating circular furnace system has been used in China for decades. Due to its low cost, it is widely used and mature. Today, with the improvement of technical and economical requirements and the urgent need of environmental protection and energy saving, this retort round furnace technology has shown more limitations. appears in: [0003] 1. The design of the overall gas distribution and material structure in the furnace is unreasonable. The upper part of the furnace (distillation section) lacks this function, and the gas distribution capacity of the existing structure in the middle and lower parts is weak...

AI Technical Summary

Problems solved by technology

[0003] 1. The design of the overall gas distribution and material structure in the furnace is unreasonable

The upper part of the furnace (distillation section) lacks this function, and the gas distribution capacity of the existing structure in the middle and lower parts is weak, which can no longer meet the needs of modern production, and the production efficiency is affected;

[0004] 2. The arch head in the middle is the hot gas distribution channel for external heat supply to dry distillation in the furnace. The existing fully enclosed structure cannot be repaired internally, and internal carbon deposits cannot be removed in time, which may easily lead to blockage of the channel;

Existing designs have poor ventilation and are prone to clogging with semi-coke

In addition, due to the limited strength, the dynamic adjustment ability of the existing structure to half-focus is relatively weak;

[0006] 4. Limited by the process, the existing furnace type has great limitations for the treatment of small grain oil shale below 20mm

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