Reactor and method for preparing particle material

Abstract

The invention discloses a reactor and method for preparing a particle material. The reactor for preparing the particle material comprises more than one reactor cavity body, wherein each reactor cavity body is used for forming and stacking a particle bed layer; the upper end of each reactor cavity body is respectively provided with a first feeding port and a second feeding port; the lower end thereof is correspondingly provided with a first discharging port and a second discharging port; a raw material gas inlet is arranged on the sidewall of the reactor cavity body at one side close to the first feeding port and the first discharging port; a tail gas outlet is arranged on the sidewall of the reactor cavity body at to one side close to the second feeding port and the second discharging port; a first distributor and a second distributor are respectively arranged inside the reactor cavity body to be close to the raw material gas inlet and the tail gas outlet; and each reactor cavity body is externally or internally provided with a dynamic generating mechanism. The invention also discloses a method for preparing the particle material. According to the reactor and method for preparing the particle material, disclosed by the invention, a plurality of disadvantages in the prior art are overcome, and efficient and energy-saving, long-term and steady, safe and reliable preparation of the particle material is realized.

Description

technical field [0001] The invention relates to the preparation technology of granular materials, in particular to a reactor and a method for preparing granular materials. Background technique [0002] In the modern industrial production process, the demand for granular materials such as silicon, nickel and titanium, and compounds such as silicon nitride, silicon carbide and silicon oxide is increasing, and the requirements for their performance are becoming more and more stringent: Granular materials must meet high purity requirements; and the particle size is uniform and moderate; the production cost of granular materials should not be too high to meet the needs of large-scale continuous production. [0003] At present, the preferred reactor for the production of granular materials is a fluidized bed reactor, using selected raw material gases (gases that can be decomposed at high temperatures, or undergo reduction, oxidation, nitriding, etc., and contain target material el...

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Problems solved by technology

[0010] After the raw material gas is sent into the reactor cavity, it needs to pass through the set gas distributor, so that the raw material gas can react as fully as possible in the reaction chamber to improve the utilization rate of the raw material gas and the yield of the particle product. The cavity decomposes at any time, causing the air inlet and the air inlet of the gas distributor to be blocked due to particle deposition, which needs to be cleaned regularly, which not only reduces the product yield, but also makes it difficult to meet the needs of continuous production;

[0011] In addition to depositing on the surface of the particle seeds, the elemental substances decomposed by the raw material gas in the reactor cavity will also form deposits on the inner wall of the cavity, the inlet of the raw material gas and the pipeline, which reduces the product yield and affects the long-term continuous stability of the fluidized bed run;

[0012] The raw material gas decomposes to form simple substance deposition, which makes the particle seeds grow up, and also causes the particles to easily bond and form agglomeration in the cavity, which affects the collection of products, and can only interrupt production for necessary treatment;

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