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Full-automatic ion exchange resin pretreatment device for laboratory

A technology of ion exchange resin and pretreatment device, which is applied in the direction of ion exchange column/bed method, ion exchange mediation/control, etc. It can solve the problems of liquid bias flow, resin cannot contact regeneration liquid, affect pretreatment effect, etc., and achieve optimal experiment The effect of steps

Pending Publication Date: 2021-07-09
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inability to accurately control the flow rate and the opening of the separatory funnel valve will change during the liquid outflow process, resulting in a change in the outflow speed of the liquid. Sometimes the liquid has flowed through the specified volume in less than 62.5 minutes, and a large amount of air will enter at this time. In the resin, if the gas is not discharged in time, the subsequent inflow of liquid will be biased, and part of the resin cannot contact the regeneration liquid, which seriously affects the effect of pretreatment
[0004] At present, there is no fully automatic ion exchange resin pretreatment device that can accurately control the amount and speed of liquid addition.

Method used

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  • Full-automatic ion exchange resin pretreatment device for laboratory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] see figure 1 .

[0026] This embodiment discloses a fully automatic ion exchange resin pretreatment device for laboratory use, which includes a liquid bottle, a peristaltic pump 1, an exchange column 7, a control system 8, a waste liquid bottle 9, a waste liquid pump 11 and a test bench 12 The peristaltic pump 1, the exchange column 7, the control system 8 and the waste liquid pump 11 are all installed on the test bench 12, and the exchange column 7 is installed on the test bench 12 through the fixing buckle 6. A placement platform 10 for placing liquid bottles is also installed on the test bench 12, and the placement platform 10 has a groove. The exchange column 7 adopts an organic glass exchange column or a glass exchange column.

[0027] In this embodiment, the peristaltic pump 1 is a multi-channel peristaltic metering pump, for example, a three-, four-, or six-channel peristaltic metering pump, depending on the experimental conditions. There are multiple liquid b...

experiment example 1

[0031] 1. Adopt the above-mentioned fully automatic ion exchange resin pretreatment device for the laboratory as the experimental equipment;

[0032] 2. Use the standard "Cation Exchange Resin Exchange Capacity Determination Method" DL / T 519-2014 to detect 001×7 cation resin (required to be converted to hydrogen form);

[0033] 3. The exchange column uses a glass exchange column. Take 25ml of the resin sample after removing the external water, add tap water, use glass rods to stir the bubbles in the resin, and fix the glass exchange column on the test bench;

[0034] 4. Add 500ml of hydrochloric acid solution with a concentration of 1mol / L to the first polytetrafluoroethylene bottle, add desalted water to the second polytetrafluoroethylene bottle, and set the program to control the first channel of the peristaltic pump to 1mol / L The flow rate of hydrochloric acid solution is 6mL / min, the liquid volume is 375ml, the flow rate of the second channel is desalted water is 6mL / min, ...

experiment example 2

[0038] 1. Adopt the above-mentioned fully automatic ion exchange resin pretreatment device for the laboratory as the experimental equipment;

[0039] 2. Use the standard "Cation Exchange Resin Exchange Capacity Determination Method" DL / T 519-2014 to detect the 201×7 anion resin (required to be converted to hydrogen-oxygen type);

[0040] 3. The exchange column uses a plexiglass exchange column. Take 25ml of the resin sample after removing the external water, add tap water, use glass rods to stir the bubbles in the resin, and fix the glass exchange column on the test bench;

[0041] 4. Add 500ml of sulfuric acid solution with a concentration of 0.5 mol / L to the first PTFE bottle, add demineralized water to the second PTFE bottle, and add 700ml, Sodium hydroxide solution with a concentration of 1 mol / L, add 700ml of sodium hydroxide solution with a concentration of 2 mol / L to the fourth polytetrafluoroethylene bottle, set the program to control the first channel of the peristalt...

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Abstract

The invention relates to a full-automatic ion exchange resin pretreatment device for a laboratory. The full-automatic ion exchange resin pretreatment device comprises liquid bottles, a peristaltic pump, an exchange column, a control system, a waste liquid bottle and a waste liquid pump, wherein the peristaltic pump is a multi-channel peristaltic metering pump; a plurality of the liquid bottles are arranged for containing liquids with different concentrations or different types; the number of the liquid bottles is equal to the number of channels of the peristaltic pump; the channels of the peristaltic pump are connected with the liquid bottles through pipes, and the liquid bottles connected with the channels of the peristaltic pump are different; the control system is in communication connection with the peristaltic pump and is used for controlling multi-channel switching of the peristaltic pump so as to extract the liquids with different concentrations or different types; and one end of the exchange column is connected with the peristaltic pump, the other end of the exchange column is connected with the waste liquid pump, and the waste liquid pump is connected with the waste liquid bottle. According to the invention, program control is used, different flow speeds and flows can be set for liquid, the purpose of optimizing experiment steps is achieved, and a new experiment scheme is provided.

Description

technical field [0001] The invention relates to ion exchange resin processing equipment, in particular to a fully automatic ion exchange resin pretreatment device for laboratories. Background technique [0002] At present, the water treatment equipment in thermal power plants uses a large number of ion exchange resins for boiler water treatment. The quality of ion exchange resins determines the quality of water after treatment. Accidents such as tube explosion and shutdown seriously affect the safe operation of the generating set. [0003] The acceptance of new resin of ion exchange resin, the detection of resin in operation and the detection of scrap resin all involve the pretreatment of resin. The standard of detection method has specific regulations on the flow rate of acid or lye, such as DL / T 519 " 400mL of H 2 SO 4 The solution flows through the resin at a flow rate of 10mL / min. At present, the laboratory uses a graduated cylinder and a stopwatch to measure the flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J47/02B01J47/14
CPCB01J47/02B01J47/14
Inventor 王涛英徐军锋廖永浩张耀刘伟伟吴昱时孝磊冀雪妮
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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