Plasma fluidized bed for treating material under normal temperature atmosphere and method thereof

Abstract

The invention relates to a kind of plasma sulfurization bed processing materials at room temperature atmospheric pressure. It includes: the bed body produced by insulating material, the downer port of which equips a gas divider, and under the gas divider equips an infundibular gas inlet, which is connected to the gas source to the conduit with gas flowmeter; the side surface of the upper bed body has gas exit, leave a hole above the position of the gas exit of the bed body; the hole equips a conduit with valve, which is linked through a feed-in tundish; set a outer electrode below the gas exit of the bed body to a segment of the outer surface of the gas divider, and the outer electrode is connected to one end of the high voltage alternating current supply; the inner electrode is inserted into the bed body, sealed and fixed at the upper port of the bed body through a insulating board; the inner electrode reaching outside the upper port of the bed body is connected to the other end of the high voltage alternating current supply. The processing method of the invention can operate at room temperature atmospheric pressure without needing vacuum equipment, so its operating cost is low. It won't damage the powdered material, and is suitable to wide area of modified materials.

Description

technical field [0001] The invention relates to a plasma treatment device for modifying materials, in particular to a plasma fluidized bed and a treatment method for treating materials at normal temperature and atmospheric pressure. technical background [0002] At present, fluidized bed equipment and technology are relatively mature, and have been widely used in chemical enterprises. The technology of treating materials with plasma is relatively mature, and the applicant has applied for several patents on this subject. The plasma fluidized bed made by combining physical and chemical methods has just begun to be developed in the world. According to foreign reports, there is a radio frequency plasma fluidized bed, such as document 1: Plasma fluidized bedimaging and possible strong coupling effects, APPLIED PHYSICSLETTERS, Vol76No.18, 2000.5. Introduced: This plasma fluidized bed mainly consists of four parts: fluidization gas control, gas distributor, radio frequency inducti...

AI Technical Summary

Problems solved by technology

The device can only generate plasma under certain vacuum conditions, vacuum equipment will increase operating costs, and the existence of vacuum conditions affects its scope of application

[0003] There is also a direct current plasma fluidized bed, such as the intermittent fluidized bed introduced in Document 2: A direct current, plasmafluidized bed reactor: its characteristics and application in diamondsynthesis, POWDER TECHNOLOGY, 88 (1996) 65-70, the intermittent Fluidized bed such as figure 2 As shown, the argon gas at the bottom fluidizes the powder particles, and the reaction gas enters from the side of the wall. The plasma is generated by drawing an arc between the cathode and anode. In the fluidized bed, the reaction gas enters from the side of the gas distributor. Due to the high temperature of the electrode, it needs to be cooled with cooling water, which also limits the types of modified materials.

Due to the existence of these shortcomings, the use efficiency of these two types of plasma fluidized beds has been affected.

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