SU38245A1 - The method of thermal processing of shale - Google Patents

Description

As is known, one of the most efficient methods of using shale is the process of thermal processing. The modern technique of thermal processing of shale, depending on the temperature conditions of the process, is divided into low-temperature and high-temperature distillation methods. In solving the problem of gasification of Leningrad, the process of low-temperature distillation in no way solves the problem due to the very low gas yield of only 50 m per ton. Thus, the only possible reception is the reception of high-temperature distillation in pure form or as a high-temperature distillation process with cracking of tar vapors contained in the raw gas, resulting in the final gas yield up to 500 m per ton of shale. However, in these two last methods of high-temperature distillation of shale, the bottleneck is the organic matter residual in the free part, reaching up to 12-15 / in of the original product in the latter. The use of this organic matter in terms of production is optional (93)

The method of its utilization, and the only possible method of its utilization, is the method of gasification with air or air enriched with oxygen both in the distillation chamber itself and in generators specially designed for this. However, the application of this method to shale meets a number of objections, which generally result in the fact that, when gasified with air or air enriched with oxygen, significant amounts of ballast nitrogen are introduced into the products of distillation; 4 m, and in the second - 2.5 l. This is highly impractical, since the heat productivity of the distillation products is greatly reduced.

The present proposal for high-temperature processing of shale is that the residual organic mass obtained during the thermal distillation of shale is gasified by carbon dioxide or combustible gases containing carbon dioxide by the following reaction:

C + COA -2CO or carbon dioxide and containing

carbon dioxide gases in steam vapors:

C +

C + + On

2С + СОЗ 4-NgO ЗСО + На

This treatment of the organic part of the residue with gas is carried out in the channel itself, with continuous external heating.

This proposal is of particular importance, for example, for Leningrad, where, as you know, one of the important options for solving the gas supply problem is the problem of obtaining peat-shale gas by mixing in a special section of double-peat gas, obtained by gasifying peat shale gas of high temperature distillation, obtained at the place of shale extraction or at another site.

The subject matter of the invention.

1. A method of thermally processing shale by high-temperature distillation or high-temperature distillation with cracking of tar vapors contained in the raw gas, characterized in that the distilled coke produced by the distillation is subjected to the same distillation chamber in the distillation chamber, continuing its external heating with carbon dioxide. or flammable gases containing carbon dioxide.

2. Modification of the method referred to in paragraph 1, characterized in that the gasification of shale coke is carried out with a mixture of gases containing carbon dioxide and water vapor.