Reaction device for pyrolyzing chemical raw materials by adopting steam

Abstract

The invention relates to a reaction device for pyrolyzing chemical raw materials by adopting steam. The device comprises a cavity, a heating mechanism, a cooling mechanism and a top cover of the cavity, wherein the heating mechanism and the cooling mechanism are sequentially arranged outside the cavity; an object carrying support is arranged inside the cavity; an exhaust pipe, an air inlet pipe, a liquid sampler and a safety unloading valve which are communicated with the inner part of the cavity are arranged on the top cover; during use, water is added into the cavity, and the water surface is positioned at the lower-middle part of the object carrying object; a pyrolyzed substance is arranged on the object carrying object; the cavity is sealed, and the heating mechanism is started, so that the water in the cavity is uniformly heated to generate water vapor with high temperature and high pressure, and the pyrolyzed substance generates a pyrolytic reaction; the pyrolytic reaction stops and inert gases are introduced into the cavity, so that the water vapor in the cavity is exhausted through the exhaust pipe; when the inner part of the cavity is filled with the inert gases, the cooling mechanism is opened; when the cavity is cooled to room temperature, the reaction is finished. According to the reaction device disclosed by the invention, direct contact between the raw materials and the water is avoided, and the aim of preserving the shape of reaction materials is achieved; the accuracy of an experimental result is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a reaction device for pyrolyzing chemical raw materials with steam. Background technique [0002] The reaction device using hydropyrolysis of chemical raw materials is one of the commonly used equipment in the laboratory. It is often used to complete the pyrolysis reaction of materials such as biomass, titanium dioxide, cement and fly ash. Existing traditional reaction devices that use hydrothermolysis of chemical raw materials often place materials directly in water when performing pyrolysis experiments. During the reaction process, some substances in the materials dissolve in water, which adversely affects the analysis of experimental products. , reducing the accuracy of the experimental results; at the same time, there are disadvantages that the material cannot be kept in shape (for example, the preparation of shaped biochar cannot be carried out); in ad...

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Problems solved by technology

Existing traditional reaction devices that use hydrothermolysis of chemical raw materials often place materials directly in water when performing pyrolysis experiments. During the reaction process, some substances in the materials dissolve in water, which adversely affects the analysis of experimental products. , reducing the accuracy of the experimental results; at the same time, there are disadvantages that the material cannot be kept in shape (for example, the preparation of shaped biochar cannot be carried out); in addition, the existing traditional reaction device using hydrothermolysis chemical raw materials lacks a cooling system, resulting in cooling time It is too long, and at the same time, the waste heat will have a certain impact on the reaction product

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