A low-chlorine photothermal molten salt production process and production device

A production process and molten salt technology, which are applied in the field of low-chlorine photothermal molten salt production process and production devices, can solve the problems of high manufacturing cost, the chlorine content cannot meet the requirements of molten salt products, and the production cannot be stabilized, and the equipment can be reduced. Corrosion, the effect of shortening the reaction residence time
CN108584991BActive Publication Date: 2020-07-21CHINA CHENGDA ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA CHENGDA ENG
Publication Date
2020-07-21

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Abstract

The invention discloses a low-chloride photothermal molten salt production process and production device. The production process comprises the steps that a, molten salt solution preparation is performed: alkaline liquid and a salpeter solution are used as raw materials to be fed into a neutralizing reactor for neutralization reaction; steam generated through neutralization reaction is subjected toheat recovery; b, a certain concentration of neutralization solution obtained through neutralization reaction is treated by an evaporative crystallization work procedure to obtain molten salt crystals; c, the molten salt crystals are subjected to centrifugal separation and drying to obtain products; centrifugal mother liquid returns to front end work procedures. The alkaline solution is used as raw materials for producing high-quality molten salt; a jet pipe type reactor with a static mixer is used for neutralization reaction; the molten salt solution obtained after the neutralization is usedfor producing solids by evaporation concentration, crystallization or slurry praying drying methods; after the subsequent treatment and package, the solids are used as final molten salt products; thechlorine content can be lower to be 15 to 20 ppm; the corrosion of molten salt products on user equipment can be reduced, so that the service life of equipment is prolonged; the long-period safe operation of a solar photothermal power generation device is ensured.
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Description

technical field

[0001] The invention belongs to the technical field of photothermal molten salt, and in particular relates to a production process and production device of low-chlorine photothermal molten salt. Background technique

[0002] At present, domestic solar thermal power generation is a large-scale utilization of high-temperature thermal energy of solar energy. It can not only reduce the use of fossil fuels, but also achieve the purpose of reducing greenhouse gas emissions and reducing air pollution. It is a rapidly emerging emerging industry. Among them, nitric acid Molten salt series is the most widely used molten salt in this industry, which is suitable for high-temperature thermal power generation of concentrated solar energy. Due to the very strict requirements on the quality of molten salt products in the field of photothermal molten salt, it is also the reason why this technology is proposed.

[0003] The components of photothermal molten salt products at h...

Claims

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