Rapid detection method of cation exchange resin dissolution substance
A cation exchange and detection method technology, which is applied in the field of rapid detection of cation exchange resin leachate, can solve problems such as difficult detection methods, introduction of background impurities, and result interference, and achieve the effects of simple methods, overcoming measurement difficulties, and easy operation
Active Publication Date: 2021-04-16
XIAN THERMAL POWER RES INST CO LTD +2
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Problems solved by technology
[0007] At present, the methods for converting organic extractables into inorganic sulfate radicals are: (1) hydrogen peroxide, which neither increases the content of inorganic ions in the sample, nor It will produce impurity ions that interfere with the determination, but at the same time it is easy to oxidize other substances in the sample, introduce background impurities, and interfere with the results
(2) Ozone, which is a gas, has the advantages of less impurities and is volatile, but it is difficult to store, and it is generally used immediately after production, which brings great difficulties to the detection method.
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Embodiment Construction
[0022] The present invention will be described in detail below.
[0023] The invention provides a rapid detection method for leached matter of cation exchange resin, which is applied to a condensate polishing system. The cation exchange resin eluate in the present invention is sulfonate.
[0024] The present invention comprises the following steps:
[0025] First of all, make preliminary preparations: ①The instruments and devices used in the detection should all use glassware, and the water samples and connections should not use plastic products as much as possible; ; ③ calibrate the sulfate content of the ion chromatograph, and draw a standard curve.
[0026] Then carry out the detection method operation: ①Take 10 to 100mL water sample containing trace resin leached matter, and place it in a container with a glass ground plug; ②Add blank solution until the liquid volume reaches 50 or 100mL; ③Use an ion chromatograph , carry out the mensuration of sulfate ion to water sampl...
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Abstract
The invention provides a rapid detection method of a cation exchange resin eluate. The rapid detection method comprises the following steps: measuring the content of sulfate ions in a water sample containing the cation exchange resin eluate, irradiating the water sample containing the cation exchange resin eluate with ultraviolet light, and measuring the content of sulfate ions after irradiation, so that the difference between the content of sulfate ions after irradiation and the content of sulfate ions before irradiation is the content of cation exchange resin eluate. The method provided by the invention can accurately determine the trace resin eluate, is simple and easy to operate, can realize real-time monitoring of the cation exchange resin eluate and overcomes the problems of inaccurate measurement and difficult measurement when hydrogen peroxide and ozone are used for measurement in the prior art.
Description
technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a rapid detection method for leached matter of cation exchange resins. Background technique [0002] Ion exchangers are the main desalination equipment in the field of water treatment. Among them, the cation exchange resin will slowly release organic extracts during operation, and its main component is polystyrene sulfonic acid (PSS). When polystyrene sulfonic acid (PSS) enters thermal equipment such as power plant boilers and nuclear power plant evaporators, it will degrade due to conditions such as high temperature, high pressure, oxidation, and irradiation, and produce corrosive SO42-, which is harmful to thermal equipment. Threat to safe operation. [0003] For the problem of leachable behavior from ion exchange resins-effect of organic impurities on BWR, less attention has been paid to the leachable matter of resin in water, but studies have shown (Hiro...
Claims
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IPC IPC(8): G01N30/02G01N30/06
CPCY02P10/20
Inventor 田文华韩隶传范娟姚洪猛马倩孙雅萍韩成李娜
Owner XIAN THERMAL POWER RES INST CO LTD