Reaction device for molybdenum trisulfide production

Abstract

The invention discloses a reactor for molybdenum trisulfide production. The reactor comprises a reactive precipitation tank and an exhaust recovery device, wherein the reactive precipitation tank comprises a reaction tank, a concentration tank and a supernate tank arranged between the reaction tank and the concentration tank; the lower bottom of the reaction tank is provided with at least one concave part which is provided with a permanent-magnet sensor for driving a solution to obliquely flow; the bottom of the supernate tank is provided with a slurry channel; the reaction tank communicates with the concentration tank through the pulp channel; the exhaust recovery device is arranged on the upper part of the reaction tank; and the exhaust recovery device is connected with the upper part of the reactive precipitation tank in a sealing mode. The reactor for molybdenum trisulfide production has high treatment capacity, can implement continuous uninterrupted production, and has the advantages of high MoS3 yield, low raw material waste, high MoS3 output and short overall production cycle; and the input cost is not obviously increased, so the income ratio is high. Besides, the exhaust is reutilized, thereby implementing green production and having great sustainable development potential.

Description

technical field [0001] The invention relates to the field of production and preparation of nanometer molybdenum disulfide, in particular to a reaction device for molybdenum trisulfide production. Background technique [0002] Nano-molybdenum disulfide has unique physical and chemical properties due to its special structure, and is widely used in petroleum hydrodesulfurization, non-aqueous lithium batteries, high-elastic new materials and their coatings, and photoelectrochemical cells. At present, there are many preparation methods for nano-molybdenum disulfide, but most of the preparation methods can only be limited to the laboratory, and there are relatively few methods that can achieve industrial-scale production. Most of them use chemical synthesis, thermal decomposition and oxidation methods. etc., the thermal decomposition method is generally by pyrolysis of MoS 3 To obtain the target product, the preparation process, equipment and operation of this method are simple, ...

AI Technical Summary

Problems solved by technology

At present, there are many preparation methods for nano-molybdenum disulfide, but most of the preparation methods can only be limited to the laboratory, and there are relatively few methods that can achieve industrial-scale production. Most of them use chemical synthesis, thermal decomposition and oxidation methods. etc., the thermal decomposition method is generally by pyrolysis of MoS 3 To obtain the target product, the preparation process, equipment and operation of this method are simple, the requirements for the professional level of production personnel are not high, and the adaptability is strong, but because the temperature control is very important during the preparation of this method, the amorphous state may be obtained when the temperature is low. MoS 2 , crystals are easy to grow at a higher temperature, and the elemental sulfur produced at the same time is more corrosive to equipment, and the yield is often not guaranteed; the oxidation method uses MoCl 3 Self-oxidation reaction to prepare MoS 2 , nano-MoS prepared by oxidation method 2 The purity is very high, and the particle size of the product can reach 0.01-0.03 μm. However, due to the strong toxicity of the molybdenum carbonyl used in the preparation process, it also produces CO gas, which has a great impact on the environment and people, thus restricting its development; chemical synthesis The method is generally called the liquid phase precipitation method, that is, the liquid phase chemical reaction is used to synthesize MoS 3 , and finally the MoS 3 Synthesis of nano-MoS 2 , the reaction process is simple, easy to operate, high yield, low cost, is the most widely used method

[0003] In the existing liquid phase precipitation method to produce nano-MoS 2 Among them, the waste gas and waste liquid are produced in a large amount, and the consumption of raw materials and reactants is serious. Due to the long-term continuous downturn in the molybdenum disulfide price market, at the same time as the high consumption, due to the problem of investment costs, enterprises often use waste gas and waste that do not meet the standards Direct external discharge, these problems have caused molybdenum disulfide production enterprises to be high-polluting enterprises

In addition, the production rate of existing molybdenum disulfide production enterprises is often low, and the products often contain organic solvents (the existing technology uses organic substances such as pyridine and hydrazine as solvents), the production scale is small, and continuous production in large quantities cannot be realized. , in the reaction precipitation process, the cycle is often longer and the efficiency is lower

Especially in the preparation of intermediate MoS 3 When the production efficiency is at a low level

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