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Device for determining exchange capacity of hydrogenous strong-acid ion exchange resin

A strong acidic cation and exchange resin technology, applied in the preparation of test samples, chemical analysis by titration, etc., can solve the problems of harsh operating conditions, test titration errors, and ion exchange resin exchange capacity measurement errors, etc., to achieve outflow The effect of convenience and easy operation

Inactive Publication Date: 2015-12-23
SHANDONG ZHONGSHI YITONG GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Tests have proved that 6.3.2 of GB / T8144-2008 "determination of the exchange capacity of hydrogen-type strong acidic cation exchange resins" has deficiencies: use a pipette to remove 25mL of the soaking solution in the corked Erlenmeyer flask (the resin must not be sucked out) The conditions are harsh and should not be mastered, especially when the wet real density of the resin is small, the resin is floating in the upper, middle, and lower parts of the soaking liquid, and the resin will be sucked into the pipette inadvertently, causing test titration errors and ion exchange resins. exchange capacity measurement error

Method used

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  • Device for determining exchange capacity of hydrogenous strong-acid ion exchange resin
  • Device for determining exchange capacity of hydrogenous strong-acid ion exchange resin
  • Device for determining exchange capacity of hydrogenous strong-acid ion exchange resin

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] The device A of the present invention is composed of the device B and the device C, the device B and the device C are combined in a complete set, and the device C is set on the outside of the device B to form the device A. Device B is a 250mL conical flask with an external ground mouth; device C has an internal ground mouth to match with device B, and device C is equipped with a piston, a ventilation tube, and a filter element. After soaking the resin-containing soaking solution at room temperature for 2 hours, use device A to quickly separate the resin from the soaking solution. The obtained soaking solution does not contain resin, thus avoiding the problem of resin inhalation when the pipette removes the soaking solution.

[0034] Such as figure 1 As shown, the function of piston 1 on device C is: valve function, when the soaking liquid is filtered, the piston is opened, the soaking liquid is automatically separated from the resin in device B, the resin remains in dev...

Embodiment 2

[0048] The difference from Example 1 is that the device B is a container with an outer grinding port, and the device C is a filter with an inner grinding port, and the inner diameter of the inner grinding port is the same as the outer diameter of the outer grinding port.

Embodiment 3

[0050] The difference from Example 1 is that the device B is a container with an inner grinding port, and the device C is a filter with an outer grinding port, and the inner diameter of the inner grinding port is the same as the outer diameter of the outer grinding port.

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Abstract

The invention discloses a device for determining the exchange capacity of hydrogenous strong-acid ion exchange resin. The device consists of a device B and a device C, wherein the device B is an open container, the device C comprises a filter, a flow control device is arranged on the outlet pipe of the device C, and an opening of the device B is connected with the inlet end of the device C. When the flow control device is closed, an airtight cavity is formed between the device C and the device B, and the volume of the cavity is kept invariable. The device C is provided with a ventilation pipe, the bottom end of the ventilation pipe extends into the device B, the top end of the ventilation pipe extends out of the device B, and a gas flow control device is arranged at the top end of the ventilation pipe. In a static state, the bottom end of the ventilation pipe is located above the reaction liquid level. The problem that the resin is sucked into a transfer pipette when the transfer pipette is moved out of a soak solution, accordingly determination of the exchange capacity of the hydrogenous strong-acid ion exchange resin is influenced and a bottle stopper breaks during a test is solved.

Description

technical field [0001] The invention belongs to the field of power grid construction, and in particular relates to a device for measuring the exchange capacity of a hydrogen-type strongly acidic cation exchange resin. technical background [0002] Cation exchange resins are widely used in power plants, pharmaceutical factories, and electronics industries, and play an important role in purifying water and removing cations from water. Exchange capacity is an important performance indicator of cation exchange resins, it is related to the quality of resin products and water production, and it is related to the price and interests between suppliers and users, so it is of great significance to accurately measure the exchange capacity of hydrogen-type strong acid cation exchange resins . [0003] The exchange capacity of an ion exchange resin refers to the total amount of chemical groups that can undergo ion exchange reactions per unit quantity (weight or volume) of the resin. In...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N31/16
Inventor 周少玲候亚琴高坚刘国强
Owner SHANDONG ZHONGSHI YITONG GRP