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Ultrasonic continuous extraction device

An extraction device and ultrasonic technology, applied in the field of ultrasonic continuous extraction devices, can solve the problems of slow dissolution, speed up extraction, troublesome operation, etc., and achieve the effects of rapid separation, saving experimental time, and easy operation.

Active Publication Date: 2015-09-30
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrasonic vibration is a physical auxiliary method that people use more in coal extraction. The special cavitation caused by ultrasound in the coal-solvent solid-liquid system and the additional four effects-turbulence effect, perturbation effect, and interface effect , Energy-gathering effect, which can speed up the rate of traditional solvent extraction and increase the yield of the process. Ultrasonic radiation can significantly speed up the extraction speed, but the general ultrasonic radiation extraction is performed intermittently, and it is necessary to stop the extraction and then filter and evaporate the solvent, which is very troublesome to operate; Soxhlet extraction is easy to operate and can be extracted continuously, but the penetration of solvent into coal particles and the dissolution of solute are very slow

Method used

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  • Ultrasonic continuous extraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Taking a 100 g coal sample as an example, the extraction experiment was carried out with the ultrasonic continuous extraction device of the present invention.

[0049] Open the stopper of spare feeding port 1-2, and add 100 g of coal sample and 600 mL of acetone reagent into sample bottle 1 from this port; open the plug of solvent feeding port 5-1, and add 400 mL of acetone, the solvent to be used, into solvent bottle 5 , set the temperature of the heating jacket 4 to 65 o C starts heating, turns on the switch of the ultrasonic probe 8, and adjusts parameters such as 10 hours of ultrasonic time and 20 KHz of ultrasonic frequency. When the temperature reaches 65 o After C, closely observe the dynamics of the steam in the solvent vapor condensation pipe 8, and properly adjust the heating temperature to 68-70 o C, so that the vapor can smoothly rise to the top, and be condensed and returned to the sample bottle 1 in the solvent vapor return pipe 7 smoothly. After the ga...

Embodiment 2

[0051] Taking 100 g coal sample as an example, the extraction experiment was carried out by ultrasonic extraction.

[0052] Weigh 100 g of coal sample and place it in a 2000 mL large beaker, add 600 mL of acetone to it, then place the large beaker in an ultrasonic instrument, and the total ultrasonic time is 2 hours. After the ultrasonic is completed, take out the large beaker and let it stand for 4 hours After the coal sample has settled, use a vacuum filtration device to filter the coal sample and the extract to separate, and use a rotary evaporator to distill and concentrate the obtained filtrate to remove the reagent to obtain the extract, and put the obtained coal sample back into the large beaker. Once the ultrasonic extraction is completed, follow the above steps to repeat the extraction until the extraction is complete. After the extract is basically colorless, the acetone extraction is completed, and the ultrasonic extraction can be completed twice a day. The first-lev...

Embodiment 3

[0054] Taking 1 g coal sample as an example, the extraction experiment was carried out by Soxhlet extraction method.

[0055] Weigh 1 g of coal sample, put it into the folded and weighed filter paper, roll the filter paper into a paper roll with the lower end sealed, and carefully put it into the Soxhlet extractor, the size of the paper roll is just enough to be placed in the extraction tube It is appropriate. Fix the round-bottomed flask filled with 200 mL of acetone on the heating mantle, assemble the Soxhlet extractor and condenser tube with the coal sample together, and wrap the interface with raw material tape to avoid poor contact and solvent leakage. waste. Pass condensed water, turn on the heating mantle, adjust the heating power, keep the solvent from bumping, and when the extract is basically colorless, stop heating. After the extraction is complete, the primary extraction time with acetone is 6 days in total, and 200 mL of acetone reagent is consumed.

[0056] Com...

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Abstract

The invention relates to an ultrasonic continuous extraction device, which includes a sample bottle, a solvent bottle, heating sleeves, an ultrasonic extraction apparatus and condenser pipes. The sample bottle and the solvent bottle are respectively provided with a heating sleeve at the bottom. An ultrasonic probe of the ultrasonic extraction apparatus is sealed in the sample bottle. The two condenser pipes are horizontally communicated with the sample bottle and the solvent bottle inbetween. One of the condenser pipes is an extract liquid extraction pipe, is hermetically connected to the lower part of the sample bottle and the solvent bottle, and is downward inclined from the sample bottle to the solvent bottle, and the joint is provided with a filtration sand core connector. The other condenser pipe is a solvent vapor return pipe, is hermetically connected to the upper part of the sample bottle and the solvent bottle, and is downward inclined from the solvent bottle to the same bottle. The ultrasonic continuous extraction device provided by the invention can selectively and rapidly realize separation of group components in coal, and has the advantages of mild operation condition, simple operation, continuous extraction, high extraction efficiency, cycle use of solvent, no noise, no waste residue or wastewater discharge, and little exhaust emission.

Description

technical field [0001] The invention relates to a coal extraction device, in particular to an ultrasonic continuous extraction device. Background technique [0002] Solvent extraction of coal, especially under mild conditions, is a necessary and effective means to study the composition and structure of coal. The obtained extract can truly reflect the original chemical structure of coal, and some phenomena in the extraction process can reflect the nature of the interaction between coal molecules and the information of the interaction between coal and solvent. Not only that, solvent extraction can effectively realize the separation of organic components in coal from coal, and is expected to become a new method and an effective way to obtain chemicals from coal. [0003] Ultrasonic extraction and Soxhlet extraction are two commonly used methods in coal extraction research, but there are certain deficiencies in the process of use. Ultrasonic vibration is a physical auxiliary m...

Claims

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Application Information

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IPC IPC(8): B01D11/02B01J19/10
Inventor 魏贤勇吕璟慧王铁民王英华刘静张栋栋宗志敏
Owner CHINA UNIV OF MINING & TECH
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