Air-assisted adsorption separation method and device

An adsorption separation and gas-assisted technology, which is applied in the field of gas-assisted adsorption separation methods and devices, can solve the problems of difficult recovery of adsorbents, difficulty in continuous adsorption process, inability to apply complex separation systems containing particles, etc., and achieve easy recovery and continuous operation , the effect of broad application prospects

Inactive Publication Date: 2018-07-06
XIANGTAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a gas-assisted adsorption separation method and device applicable to the direct separation of target substances in complex systems, to solve the difficulties in the recovery of adsorbents in the adsorption separation process, the difficulty of continuous adsorption process and the inability to apply Difficulties such as the complex separation system of particles

Method used

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  • Air-assisted adsorption separation method and device

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Experimental program
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Effect test

Embodiment 1

[0024] Congo red, a typical pollutant in printing and dyeing wastewater, was taken as the separation object. use figure 1 The shown gas-assisted adsorption separation device mainly includes an air flotation column 5 (inner diameter 50mm, length 320mm) and an adsorbent film 11 with a gas distributor 6, and the top of the air flotation column 5 is provided with a fixed position pulley 12 and The adsorbent film 11 driven by it, the bottom of the air flotation column 5 is provided with a gas distributor 6, the adsorbent film 11 is driven by the motor drive wheel 13 through the pulley 12, the motor is a variable speed motor with AC or DC input, and the adjustment rate is 0 ~100 rev / min; also includes rotameter, buffer tank and gas cylinder of auxiliary equipment. The rotameter 4 is connected to the gas inlet at the bottom of the air flotation column 5 , and then the gas is delivered to the air flotation column 5 through the gas distributor 6 .

[0025] Utilize above-mentioned gas...

Embodiment 2

[0030] The heavy metal ions in wastewater are used as the separation object. In this experiment, the typical toxic heavy metal ion hexavalent chromium was used as the removal object, and a 3m long and 5cm wide film coated with activated carbon was used as the adsorbent film. 6+ Concentration is 30ppm, take a small amount of CTAB as surfactant.

[0031] The specific operation is: add the prepared heavy metal raw material liquid into the air flotation column 5 until the liquid surface is just in contact with the adsorbent film 11, open the gas valve, adjust the gas flow rate to 60ml / min, and let it pass through the gas distributor 6 continuously Through the air flotation column 5, at the same time, the motor drive wheel 13 is adjusted to drive the adsorbent film 11 to rotate continuously at a speed of 2 r / min, and the air bubbles 7 generated by the injected gas capture the substance to be separated 8 and the surfactant in the feed liquid 10 The composites are passed upward, and...

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Abstract

The invention relates to an air-assisted adsorption separation method and device. Air-assisted adsorption separation is carried out on an air-assisted adsorption separation device. The device comprises an air flotation column with an air inlet, and an adsorbent film which is arranged on the top of the air flotation column and can continuously rotate, wherein solution which contains particles and organic matters or ion type substances to be separated fills the air flotation column until a liquid level is just in contact with the top adsorbent film; an air valve is started to control air to continuously pass through the air flotation column; generated bubbles carry the organic matters or ion type substances in the solution to be upwards transferred; after the bubbles are near the liquid level, the bubbles are captured by the adsorbent film which is driven by a motor to continuously rotate, mother liquor is taken out, and particles are intercepted in the mother liquid to finish an air-assisted adsorption separation process. The method has the advantages that the adsorbent can be easily recovered, the method can be directly suitable for complex solution systems which contain particles,no adsorbents are left, and the like, and the method has a good application prospect in the fields of target object selective separation and waste water treatment in complex solution.

Description

technical field [0001] The invention relates to an adsorption separation method, in particular to a gas-assisted adsorption separation method and device. Background technique [0002] Adsorption separation technology generally includes the preparation of adsorbents, the use of adsorbents for the adsorption of solutes, the removal of adsorbents from the separation system and the recycling of adsorbents after desorption. Due to the advantages of low cost, simple process and high separation efficiency, this technology has been widely used in the separation of natural products, metal separation, separation of various other substances and wastewater treatment. Although this technology has made great progress in various separation processes, there are still some problems as follows: First, it is difficult to separate and recover the adsorbent. At present, the commonly used methods are centrifugation, filtration or column packing, and there is energy consumption in centrifugation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/08C02F1/28C02F1/24C02F101/22
CPCB01D15/08C02F1/24C02F1/28C02F2101/22C02F2101/308
Inventor 李文松王倩黄玲
Owner XIANGTAN UNIV
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