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Nuclear-purity-grade boric acid standard substance preparation device

A standard substance and preparation device technology, which is applied in the preparation of boron oxyacids, boron oxide compounds, and test samples, and can solve problems such as no content matching boric acid

Active Publication Date: 2020-02-21
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no domestic boric acid standard material matching the content of impurity elements such as iron, calcium, magnesium, chlorine, fluorine, and sulfate

Method used

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  • Nuclear-purity-grade boric acid standard substance preparation device

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as figure 1 A nuclear-purity boric acid standard substance preparation device shown includes a feeding valve 1, a serpentine condenser tube 2, a liquid collection bottle 3, a circulating water vacuum pump 4, a vacuum pressure gauge 5, a heating system 6, a kettle body 7, and a temperature sensor 8. Frequency conversion motor 9, PTFE agitator 10, discharge valve 11.

[0034] The kettle body 7 is a double-layer glass reactor.

[0035] The feed valve 1 is arranged at the feed port on the top of the still body 7, and the raw materials needed for producing boric acid standard substances are added into the still body 7 by unscrewing the feed valve 1.

[0036] The feeding valve 1 is a polyethylene knob with a soft gasket, which can prevent the feeding port from being corroded by water and acid mist, and the soft gasket is used ...

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Abstract

The invention relates to the technical field of boric acid standard substance preparation, and particularly discloses a nuclear-purity-grade boric acid standard substance preparation device, wherein heat-conducting oil in an oil bath pot is pumped into a glass interlayer of a kettle body through a pressurizing pump in a heating system to fill the interlayer with the heat-conducting oil, and the whole kettle body is heated through the hot heat-conducting oil. According to the invention, the device is simple in structure and can be used for preparing boric acid standard substances, and the technical indexes of the prepared standard substance meet related requirements.

Description

technical field [0001] The invention belongs to the technical field of boric acid standard substance preparation, and in particular relates to a nuclear-purity boric acid standard substance preparation device. Background technique [0002] Water is the main carrier of the coolant in the primary circuit of the PWR. The pH value of the water has a great influence on the corrosion rate of equipment and materials. By adjusting boric acid and lithium hydroxide, the pH value of the primary circuit coolant can be controlled It is weakly alkaline, so that the corrosion rate of stainless steel materials is the lowest. However, the harmful impurities in the primary circuit water will threaten the safe operation of the reactor through various forms, such as the existence of iron, calcium, magnesium and other ions. The nuclear power plant is harmful to the impurity elements such as iron, calcium, magnesium, chlorine, fluorine, and sulfate in boric acid. There are strict limits. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/10G01N1/28G01N1/38
CPCC01B35/1045G01N1/28G01N1/38Y02P20/10
Inventor 郭国龙王春叶王海珍杨丹丹孙雪云龚明明李梁
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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