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Method and device for detecting bicarbonate radical exchange capacity of anion resin

An anion resin, bicarbonate technology, applied in the direction of material inspection products, etc., can solve the problems such as the bicarbonate exchange capacity that cannot be used to detect anion resins, and achieve the speed of ion exchange, save detection time, and improve accuracy. Effect

Active Publication Date: 2022-07-01
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defect that the prior art cannot be applied to detect the bicarbonate exchange capacity of the anion resin, thereby providing a method and device for detecting the bicarbonate exchange capacity of the anion resin

Method used

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  • Method and device for detecting bicarbonate radical exchange capacity of anion resin
  • Method and device for detecting bicarbonate radical exchange capacity of anion resin
  • Method and device for detecting bicarbonate radical exchange capacity of anion resin

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Embodiment 1

[0043] This embodiment provides an anion resin bicarbonate exchange capacity detection device, such as figure 1 As shown, it includes an exchange tube 1 and an upper cover 2, the exchange tube 1 includes an upper port, and the upper cover 2 is used to seal the upper port. Ion exchange in a closed container to avoid CO in the air 2 Affect the detection results and improve the accuracy.

[0044] It also includes a filter plate 4 and a bottom cover 5, the filter plate 4 divides the exchange tube 1 into a measurement chamber 6 and a resin chamber 7, the exchange tube 1 also includes a lower port, and the bottom cover 5 is used for sealing all parts. port below. Setting the filter plate 4 can prevent the anion resin from entering the measurement chamber 6 and affect the measurement effect, and the device of the present invention can directly measure the pH value in the measurement chamber 6 without pouring out the ion-exchanged solution, further reducing CO in the air 2 influenc...

Embodiment 2

[0047] The present embodiment also provides a method for detecting the bicarbonate exchange capacity of an anion resin, using the device in Embodiment 1, comprising the following steps:

[0048] Step 1. Rinse the anion resin (manufacturer: ATLD, model AT-IRN) with pure water to remove the anion resin eluate and visible mechanical impurities. The rinsed resin was put into a centrifugal filter tube, and the centrifuge was used at 2200 r / min to spin dry for 5 min to remove external moisture.

[0049] Step 2. Take 5g of resin from which external moisture has been removed and put it into the resin chamber 7 of the detection device, tighten the bottom cover 5, add 100mL of sodium bicarbonate solution prepared with 0.1mol / L carbon dioxide-free water into the measuring chamber 6, and tighten the upper cover 2 Separate from the air, invert and stir 6 times every 2 hours, exchange for 8 hours, remove the upper cover 2, and measure the pH of the solution after the exchange is completed i...

Embodiment 3

[0075] The present embodiment also provides a method for detecting the bicarbonate exchange capacity of an anion resin, using the device in Embodiment 1, comprising the following steps:

[0076] Step 1. Rinse the anion resin (manufacturer: ATLD, model: AT-IRN) with pure water to remove the anion resin elution and visible mechanical impurities. The rinsed resin was put into a centrifugal filter tube, and the centrifuge was used for drying at 2200 r / min for 8 minutes to remove external moisture.

[0077] Step 2. Take 5g of resin from which external moisture has been removed and put it into the resin chamber 7 of the detection device, screw the bottom tightly, add 100mL of sodium bicarbonate solution prepared with 0.1mol / L carbon dioxide-free water into the measurement chamber 6, and tighten the upper cover 2 and Air isolation, 8 times of inversion and stirring every 1 hour, exchange for 6 hours, remove the upper cover 2, and measure the pH of the solution after the exchange is c...

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Abstract

The invention provides a method and a device for detecting the bicarbonate radical exchange capacity of anion resin, belongs to the technical field of resin exchange capacity detection, and solves the defect that the prior art cannot be applied to detection of the bicarbonate radical exchange capacity of the anion resin. The detection method comprises the following steps: step 1, cleaning anion resin; step 2, anion resin and the bicarbonate solution are mixed and then subjected to ion exchange, and the pH value Y of the solution obtained after ion exchange is measured; step 3, obtaining the bicarbonate radical exchange capacity Q of the anion resin according to the following formula: in the formula, a is the distribution coefficient of HCO3 <->; b is the distribution coefficient of CO3 < 2->; c is the molar concentration of the bicarbonate solution; v is the volume of the bicarbonate solution; m is the mass of the anion resin; x is the water content of the anion resin.

Description

technical field [0001] The invention belongs to the technical field of resin exchange capacity detection, and in particular relates to a method and device for detecting the bicarbonate exchange capacity of anion resins. Background technique [0002] During the operation of the generator, a large amount of heat will be generated due to the existence of resistance and electromagnetism. If the heat cannot be dissipated in time, it will seriously affect the output of the generator and the safety of the equipment. In order to effectively cool the generator, the existing large-scale thermal power and hydropower The generator generally adopts the water-hydrogen-hydrogen or double water internal cooling method to cool the generator stator bar, rotor and stator iron core. Most of the hollow wire rods of water-cooled generators are made of No. 2 oxygen-free copper. Many thermal power and nuclear power generators at home and abroad have encountered problems of blockage caused by corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/44
CPCG01N33/442
Inventor 于洋李良周洋刘青华杨磊马明强
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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