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Method for preparing nitrogen-containing liquid fertilizer by adopting non-thermal arc plasma

A non-thermal arc and liquid fertilizer technology, applied in chemical instruments and methods, nitrogen compounds, non-metallic elements, etc., can solve the problems of high energy consumption and complicated process, achieve low cost of nitrogen source, simple device and operation, avoid transport effect

Inactive Publication Date: 2015-01-21
SUN YAT SEN UNIV
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  • Abstract
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Problems solved by technology

[0002] The commonly used industrial nitrogen fixation method is mainly to use a catalyst to synthesize ammonia from nitrogen and hydrogen at a ratio of three to one at a certain temperature and pressure, and then apply the obtained ammonia to the manufacturing processes of the fertilizer industry and the plastics industry. high energy consumption

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  • Method for preparing nitrogen-containing liquid fertilizer by adopting non-thermal arc plasma

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Embodiment

[0020] As shown in the attached figure, 2000mL of pure water is introduced into the non-thermal arc plasma device, using a 3000mL plastic reactor (7), and two parallel knife-shaped stainless steel electrodes (2) are used as an electrode, with a length of 80mm, a width of 30mm, and a thickness of 3mm , the stainless steel electrode is placed horizontally above the water to be treated (4), and the minimum distance between the electrode and the water surface is 5mm. Turn on the high-voltage power supply (1), adjust the voltage to 10000V, generate a breakdown arc between the knife-shaped stainless steel electrode and the water surface, turn on the air source (5), and the air flow passes through the nozzle (5) to drive the arc to slide along the knife-shaped electrode , forming a non-thermal arc plasma (3), the plasma induces a plasma chemical reaction, and generates nitrate and nitrite in water; after 10 minutes of discharge treatment, a liquid fertilizer containing nitrate and nit...

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Abstract

The invention discloses a method for preparing a nitrogen-containing liquid fertilizer by adopting a non-thermal arc plasma. The method particularly comprises the following steps that: water is introduced into an non-thermal arc plasma device; a high-voltage power supply is started to generate a breakdown arc between a knife-shaped stainless steel electrode and a water level, an air flow from an air source drives the arc to slide along the knife-shaped electrode through a spray nozzle to form an air non-thermal arc plasma, and the plasma induces plasma chemical reaction between air and water to generate nitrate and nitrite, so that the liquid fertilizer which contains the nitrate and the nitrite is obtained. The method disclosed by the invention can obtain the liquid nitrogen fertilizer in one step through the plasma, and has the advantages of low nitrogen source cost, simple, small-sized and portable device and easiness for operation; and the liquid nitrogen fertilizer can be prepared when needed at any time, thereby preventing the troubles of transportation, storage and preservation.

Description

technical field [0001] The invention relates to a method for preparing nitrogen-containing liquid fertilizer, in particular to a method for preparing nitrogen-containing liquid fertilizer by non-thermal arc plasma. Background technique [0002] The commonly used industrial nitrogen fixation method is mainly to use a catalyst to synthesize ammonia from nitrogen and hydrogen at a ratio of three to one at a certain temperature and pressure, and then apply the obtained ammonia to the manufacturing processes of the fertilizer industry and the plastics industry. High energy consumption. Therefore, in order to fix nitrogen with low cost and high efficiency, in addition to improving existing technologies, new technologies must be developed. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a method for preparing nitrogen-containing liquid fertilizer by non-thermal arc plasma. The method is characterized in that water is treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/48C01B21/50C05C13/00
Inventor 杜长明
Owner SUN YAT SEN UNIV
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