Heating material for carbon dioxide cracking device

Abstract

The invention relates to the technical field of carbon dioxide cracking, in particular to a heating material for a carbon dioxide cracking device. The heating material at least comprises the followingraw materials: a catalyst, metal powder, organic acid, an oxidant, an ammonium compound and ash powder, wherein the catalyst at least comprises a rare earth element catalyst. The heating material hasthe advantages that the heating speed is high; the calorific value is high; liquid carbon dioxide can be rapidly converted into gaseous carbon dioxide, the effect achieved by a large amount of materials before can be achieved by adding a small amount of the heating material, the material cost is reduced, pollution-free raw materials are adopted, and safety and environmental friendliness of the heating material are guaranteed. In addition, the high blasting energy can instantaneously generate a very high shearing force on the inner wall of a rock, so that the broken wall has higher flatness, and the generation of broken stone, dust and noise is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of carbon dioxide cracking, in particular to a heating material for a carbon dioxide cracker. Background technique [0002] With the development of urban underground railways in my country and the continuous maturity of urban subway networks, subway stations and lines usually contain pile structures, and manual excavation of piles is required for construction. When the artificial excavation pile encounters a rock layer with high hardness, it will adopt the method of manual and mechanical excavation, or the method of explosive blasting. The former construction is difficult, the work efficiency is low, and there is great safety when people work underneath. Risk, the latter pollutes the environment, the process is cumbersome, unsafe and costly. [0003] High-pressure gas blasting is a kind of blasting without explosives. In the early 1960s, some developed countries such as the United States began to study this...

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Problems solved by technology

[0005] However, the heat-generating material used in the current carbon dioxide cracking blasting method has less heat generation, so that the liquid carbon dioxide cannot be rapidly expanded and blasted, resulting in a longer blasting time. A large amount of dust and noise are generated when the wall is blown, which affects the entire blasting process

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