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Device for determining weak-base radical exchange capacity of acrylic acid-series anion exchange resin

A technology for exchanging resins and weak acid groups, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by causing materials to undergo chemical reactions. It can solve harsh operating conditions, test titration errors, and ion exchange resin exchange. Problems such as capacity measurement error, etc., to achieve the effect of convenient operation and convenient flow

Inactive Publication Date: 2015-12-16
STATE GRID OF CHINA TECH COLLEGE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Tests have proved that there are deficiencies in 7.7 "Determination of Weak Acid Group Exchange Capacity" in GB / T19861-2005 "Determination of Strong Base Group, Weak Base Group and Weak Acid Group Exchange Capacity of Acrylic Anion Exchange Resin": Use pipetting The operation condition of removing 25mL of the soaking solution from the stoppered Erlenmeyer flask (resin must not be sucked out) is 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 solution, and the resin will inadvertently will be sucked into the pipette, resulting in test titration errors and ion exchange resin exchange capacity measurement errors

Method used

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  • Device for determining weak-base radical exchange capacity of acrylic acid-series anion exchange resin
  • Device for determining weak-base radical exchange capacity of acrylic acid-series anion exchange resin
  • Device for determining weak-base radical exchange capacity of acrylic acid-series anion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The device A is composed of a device B and a 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 3 hours, use device A to quickly separate the resin from the soaking solution. The obtained soaking solution filtrate 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 device B, and the soaki...

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 weak-base radical exchange capacity of acrylic acid-series anion exchange resin. The device is composed of a device body B and a device body C. The device body B is an opened container. The device body C comprises a filter. An outlet pipeline of the device body C is provided with a flow control device, and an opening of the device body B is connected with the inlet end of the device body C. When the flow control device is closed, the device body C and the device body B form an airtight cavity and the size of the cavity is kept unchanged. The device body C is provided with a ventilation pipe. The bottom end of the ventilation pipe stretches into the device body B, and the top end of the ventilation pipe stretches out of the device body B. A gas flow control device is arranged at the top end of the ventilation pipe. In the static state, the bottom end of the ventilation pipe is located over the liquid level of reaction liquid. The device solves the problems that determination of the weak-base radical exchange capacity of the acrylic acid-series anion exchange resin is affected by suction resin when a transfer pipette is moved out of a soak solution and bottle plugs are broken in a test.

Description

technical field [0001] The invention belongs to the field of power grid construction, in particular to a device for measuring the exchange capacity of weak acid groups of acrylic anion exchange resins. technical background [0002] Ion exchange resins are widely used in power plants, pharmaceutical factories, and electronics industries, and play an important role in purifying water, removing anions and cations in water, and removing organic matter. Exchange capacity is an important performance index of ion exchange resins. It is related to the quality of resin products and water production, as well as the price and benefits between suppliers and users. Therefore, it is of great significance to accurately measure the exchange capacity of ion exchange resins. [0003] National Standard GB / T19861—2005 "Determination of Exchange Capacity of Strong Base Group, Weak Base Group and Weak Acid Group of Acrylic Anion Exchange Resin" in 7.7 "Determination of Exchange Capacity of Weak A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 姜文娟周少玲
Owner STATE GRID OF CHINA TECH COLLEGE