Battery diaphragm sulphonation equipment and sulphonation treatment technique

A battery diaphragm and equipment technology, applied in the field of MH-NI battery diaphragm sulfonation equipment and sulfonation treatment process, can solve the problems of strict sulfonation process control requirements, unsuitable for sulfur trioxide reagent, high cost of waste liquid treatment, etc., to achieve The effect of simple structure, good performance and easy handling

Active Publication Date: 2009-05-27
莱州联友金浩新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects that the existing sulfonation reaction device is not suitable for sulfur trioxide reagent, the cost of waste liquid treatment is high, it is not friendly to the environment, and the control requirements of the existing sulfonation process are too strict and complicated, the present invention provides a relatively simple structure, The battery diaphragm sulfonation equipment with low processing cost and no pollution to the environment and the sulfonation process with simple operation

Method used

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  • Battery diaphragm sulphonation equipment and sulphonation treatment technique
  • Battery diaphragm sulphonation equipment and sulphonation treatment technique

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Experimental program
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Embodiment 1

[0024] Such as figure 1 As shown, the sulfonation reaction tank 40 of the sulfonation reaction device is a flat cuboid with an open upper end, usually with a height of 0.5-2m, a width of more than 0.1m, and a thickness slightly larger than the film width of the polyolefin fiber membrane 9. The tank of this embodiment The height is 1m, the width is 0.35m, and the shell is made of stainless steel. The heating insulation cover 4 around the shell is constructed by the heater of the sulfonation reaction tank 40 and the asbestos cloth insulation material, and the heater is an electric heating wire. The winder 8 and the unwinder 7 are respectively located on the left and right sides outside the tank, and the two ends of the fiber membrane 9 are connected to the winder 8 and the unwinder 7 respectively, and the fiber membrane 9 passes through the sulfonation reaction tank 40 around the rotating shaft 10 . Temperature sensor 5 and SO are installed in the middle of the tank 3 Concentr...

Embodiment 2

[0040] The difference between embodiment 2 and embodiment 1 is: the temperature in the sulfonation reaction tank 40 is controlled at 55±5°C, the SO in the sulfonation reaction tank 40 3 When the gas concentration is 90%, the speed control mechanism controls the fiber membrane 9 to run at a stable speed of 2m / min, and then controls the fiber membrane 9 and SO 3 The reaction time of gas contact is 30S, the concentration of KOH lye in the alkali washing tank is 3±1%, the temperature of the dryer before dipping is 50±5°C, the drying time is 30S, and the anion in the surfactant dipping tank is resistant to strong acid and alkali The surfactant concentration is 1.5±0.5‰, the temperature is 35±5°C, and the dipping time is 10S.

Embodiment 3

[0042] The difference between embodiment 3 and embodiment 1 is: the temperature in the sulfonation reaction tank 40 is controlled at 95±5°C, the SO in the sulfonation reaction tank 40 3 When the gas concentration is 100%, the speed control mechanism controls the fiber membrane 9 to run at a stable speed of 30m / min, and then controls the fiber membrane 9 and SO 3 The reaction time of gas contact is 2S, the concentration of KOH lye in the alkali washing tank is 19±1%, the temperature in the dryer before dipping is 95±5°C, the drying time is 10S, and the anion in the surfactant dipping tank is resistant to strong acid and alkali The surfactant concentration is 9.5±0.5‰, the temperature is 60±5°C, and the dipping time is 2S.

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Abstract

The invention provides battery-diaphragm sulfonation equipment, which has a sulfonation reaction device and a sulfonation reaction post-treatment device, wherein a sulfonation reaction tank of the sulfonation reaction device is provided with a SO3 gas inlet, and is in hermetic connection with a condensation recovery tank collecting escaping SO3 gas; the SO3 gas escaping from the sulfonation reaction tank enters a condensation tube in the condensation recovery tank; and the lower end of the condensation tube is communicated with a liquid-state SO3 recovery pot. The invention also provides a process of adopting the device to perform sulfonation reaction treatment and post-treatment of sulfonation reaction to battery diaphragms. In the process, fiber membrane is in contact with the SO3 gas for sulfonation. The sulfonation equipment has the advantages that the sulfonation reaction device is simple in structure, convenient to treat, low in cost and free from environmental pollution. The sulfonation equipment can reuse the escaping SO3 gas, and thoroughly eliminates the hidden trouble of polluting environment as the condensation tube is communicated with a tail gas processor.

Description

technical field [0001] The invention relates to battery diaphragm modification equipment and a production process, in particular to a MH-NI battery diaphragm sulfonation equipment and a sulfonation treatment process. Background technique [0002] Because the performance of MH-NI battery is better than that of nickel-cadmium battery and it does not pollute the environment, it has been greatly developed in recent years. The MH-NI battery separator is an important part of the MH-NI battery, and its quality has a great influence on the battery capacity, charge and discharge performance, charge retention rate, service life, etc. At present, the performance of the domestic battery separator is comparable to that of foreign products. Large gap, high-performance, high-capacity, high-current discharge battery separators rely on imports. [0003] MH-NI battery separator materials mainly include polyamide fiber, polyvinyl alcohol fiber and polyolefin fiber. From the perspective of com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M50/403
CPCY02E60/12Y02E60/10
Inventor 方开东蔡乃才徐继亮
Owner 莱州联友金浩新型材料有限公司
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