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Method for preparing vanadium nitride and device

A vanadium nitride and fluidization technology, applied in chemical instruments and methods, nitrogen-metal/silicon/boron binary compounds, vanadium compounds, etc., can solve problems such as low efficiency and long production cycle, and achieve a simple process method. , High production efficiency, easy operation effect

Inactive Publication Date: 2005-01-12
SHANGHAI UNIV
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Problems solved by technology

However, direct use of gas as reducing agent and nitriding agent to prepare vanadium nitride has low efficiency and long production cycle

Method used

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  • Method for preparing vanadium nitride and device

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Embodiment 1

[0018] Embodiment 1: In this embodiment, the above-mentioned fluidized bed technology is adopted, and a radio frequency power supply is used to inductively excite the plasma in the reaction zone, and the gaseous molecules in the reaction gas are excited into active particles such as hydrogen and nitrogen ions with strong chemical activity. , so that these active particles interact with the vanadium oxide particles suspended in the reaction zone to form vanadium nitride.

[0019] The special device of the method of the present invention is as mentioned above, and this device has a fluidized bed 1 that airtight reaction vessel constitutes, and the radio frequency induction coil 2 is housed outside the fluidized zone position of reaction vessel, is arranged on the side of induction coil 2 There is a radio frequency power supply 3, which induces plasma in the reaction zone through the induction coil 2, and activates the reaction gas; on the other side of the fluidized bed 1, there ...

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Abstract

The invention relates to a processing method of prepn. vanadium nitride by fluidized bed technology and corresponding special device. The characteristic is to create plasma body in reaction zone of fluidized bed by ratio frequency induction, the reaction gas ammonia, nitrogen and hydrogen are excited and ionized to create active hydrogen and nitrogen particle which is made reducting and nitrating reaction with vanadium oxide particle suspensing in fluidized zone to create vanadium nitride. The special device used by this invention includes fluidized bed, radio frequency inducting coil, radio frequency power source, heater, air supply tank, air current distributor, air-extracting system, air valve, general air valve controlling and adjusting reaction gas flow and the pipe line system.

Description

technical field [0001] The invention relates to a method for preparing vanadium nitride and a device thereof, and more specifically relates to a process for preparing vanadium nitride by adopting a fluidized bed technology and a corresponding special preparation device, belonging to the technical field of chemistry and chemical engineering. Background technique [0002] Vanadium is an important alloying element in steel production, and it is widely used in low microalloyed steels. Studies have shown that adding vanadium to steel can significantly increase the strength of steel. For example, adding vanadium to steel with [C]≤0.25% can increase the yield strength from 350MPa to more than 600MPa. Vanadium-containing steel not only improves the strength, but also improves thermal fatigue resistance, weldability and other comprehensive properties. The compounds produced by the reaction of vanadium with carbon and nitrogen play a role in precipitation hardening and grain refineme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/06C01G31/00
Inventor 丁伟中张玉文郭曙强周国治
Owner SHANGHAI UNIV
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