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A reduction device for converting divalent mercury into zero-valent mercury

A technology of divalent mercury and zero-valent mercury, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as fragility, and achieve the effect of improving heat energy utilization and maintaining temperature

Inactive Publication Date: 2019-03-01
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, the heating wire of high-temperature heating equipment is directly coiled on the heating tube, and the heating tube is suddenly heated and easily broken

Method used

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  • A reduction device for converting divalent mercury into zero-valent mercury
  • A reduction device for converting divalent mercury into zero-valent mercury
  • A reduction device for converting divalent mercury into zero-valent mercury

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Embodiment Construction

[0021] See attached figure 1 , 2 , the present invention comprises heating tube 2, heating wire 8 and throttling valve 13, because the melting point of quartz is above 1500, and hardness is high, brittleness is good, chemical corrosion resistance is good, the adsorption to mercury is little, so heating tube 2 adopts Quartz tube, the divalent mercury contained in the coal flue gas is converted into zero-valent mercury in the heating tube 2. The heating wire 8 is externally connected in series with the ceramic beads 7, and the heating wire 8 is coiled on the heating tube 2, and when coiled, the heating wire 8 is pressed against the ceramic beads 7, and the ceramic beads 7 are pressed against the heating tube 2. In this way, the heat generated by the heating wire 8 will be transferred to the heating tube 2 through the ceramic beads, so as to avoid the rupture of the heating tube 2 caused by the sudden change of the temperature of the heating wire 8 . However, after the present ...

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Abstract

A reduction device for divalent mercury to elemental mercury conversion is used for converting divalent mercury into elemental mercury at high temperature and comprises a heating tube, a heating wire and a temperature controller, wherein the outside of the heating wire is connected with ceramic beads in series; the heating wire is wound on the heating tube and used for uniformly heating the heating tube; the temperature controller is used for keeping the temperature to be always 800 DEG C; an insulating tube is arranged outside the heating tube; a sealing cover is arranged at each of the two ends of the insulating tube. The reduction device can effectively maintain the internal temperature and enable the heating tube to be firmer. In short, the reduction device is simple in structure, high in safety performance and suitable for industrial production.

Description

technical field [0001] The invention provides a reduction device for converting divalent mercury into zero-valent mercury at high temperature. Background technique [0002] Mercury is a metal that exists in a liquid state at room temperature. It has a high density and stable chemical properties. It is insoluble in acid and alkali. It can evaporate at room temperature. Mercury vapor and mercury compounds are highly toxic (chronic). Coal-fired power plants are one of the main sources of anthropogenic mercury emissions, accounting for one-third of anthropogenic emissions, and the mercury discharged after treatment is mainly stored in the atmosphere in the form of mercury vapor. Accumulation into the food chain, causing mercury poisoning. It is precisely because of the high toxicity of mercury that it is of great practical significance to effectively and conveniently monitor the concentration of mercury. [0003] Mercury concentration monitoring method-ultraviolet light absorp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/64
CPCB01D53/005B01D53/64B01D2257/602B01D2258/0283
Inventor 郑海明李长朝
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)