Plant Extraction Tank

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Overview

The plant extraction tank can be used for extracting and collecting the effective components of plants in biopharmaceuticals, food, health products, cosmetics, etc. It usually adopts multiple extraction processes such as normal pressure, micro – pressure, water decoction, warm soaking, thermal reflux, forced circulation, and percolation. It has high extraction efficiency and convenient operation, and is a special equipment in the production of traditional Chinese medicine.

Composition

The plant extraction tank is composed of an extraction tank, a distillation tank, a hanging basket, a vegetable oil collector, a cooler, a condenser, a material liquid pump, a pipeline filter, and internal connecting pipelines, etc. The small – sized vegetable oil collector adopts a laboratory – level glass multi – pipeline design. The small diameter of the glass pipeline is conducive to the separation, extraction, and collection of plant essential oils.

The extraction tank is composed of inner and outer cylinders, a jacket, a thermal insulation layer, an oil – water separator, a demister, a filter, a cooler, a temperature measuring hole, a CIP automatic rotating spray ball, lugs, a slag discharge port, a cylinder console, etc. The thermal insulation layer uses rock wool as the thermal insulation material, which has good thermal insulation performance and long service life.

The inner cylinder is made of high – grade SUS304/316L stainless steel, and the jacket adopts a fully enclosed mode. The outer cylinder is made of SUS304 matte thin steel plate. The tank is equipped with a CIP automatic rotating spray ball head, a temperature measuring hole, an explosion – proof vision lamp, a sight glass, a quick – opening feeding port, and other related equipment. It has the characteristics of uniform solvent distribution, convenient slag discharge, and easy operation. It meets the national GMP pharmaceutical manufacturing standards and is safe and reliable.

Extraction Methods

Water Extraction: Put water and raw materials into the plant extraction tank in a certain proportion, open the jacket steam stop valve to start heating and extraction. During the extraction process, a large amount of steam containing the essence of vegetable oil will be generated from the raw materials in the tank. The steam passes through the demister to the condenser for condensation, and then enters the oil – water separator. The condensed liquid flows back into the vegetable oil collector, and this cycle continues until the extraction is terminated. When the extract reaches the requirements specified by the extraction process, stop heating. This operation has the advantages of convenient operation and high extraction efficiency.
Alcohol Extraction: Add ethanol and plant medicinal materials into the tank in a certain proportion, and carry out airtight treatment on the plant extraction tank. Open the jacket inlet valve for steam heating and extraction. During the extraction process, a large amount of steam is generated in the tank. The steam is discharged from the steam port, captured by the demister and enters the condenser for condensation, then enters the cooler for cooling, and then enters the gas – liquid separator for separation. The residual gas escapes from above the condenser, and the liquid flows back into the extraction tank. This cycle continues until the extraction is terminated. When the extract reaches the requirements specified by the extraction process, stop heating.
Oil Extraction: Add plants containing volatile oil (taking traditional Chinese medicine as an example) into the plant extraction tank. Open the oil – water separator and its circulation valve, close the bypass reflux valve. When the jacket steam valve is opened to reach the volatilization temperature, open the cooler for cooling treatment. The cooled medicinal liquid maintains a certain liquid level difference in the separator to separate from water.
Forced Circulation: During the extraction process, to improve the extraction efficiency, a pump can be used for forced circulation of the plants (but it is not suitable for forced circulation when extracting plants with a lot of starch and high viscosity). The extract such as vegetable oil is discharged from the liquid discharge pipe at the lower part of the tank body, filtered through a filter, and then pumped back into the tank body for reflux extraction.

Nozzle Configuration

The equipment tank is equipped with process nozzles such as a manhole, a breathing port, a feeding port, a discharging port, a sight glass, a spotlight, a CIP (equipped with a sanitary universal cleaning ball), an SIP port, a sterile sampling port, a temperature gauge, a temperature sensor, and inlets and outlets for cold and hot media. In addition, the nozzles of the plant extraction tank can be designed and installed according to customer needs.

It can not only be used for the extraction and concentration of plant essential oils but also for the extraction and concentration of Chinese herbal medicines, cosmetics, etc.

Technical Parameters

Model	TQ – 0.3	TQ – 0.5	TQ – 1.0	TQ – 2.0	TQ – 3.0	TQ – 6.0	TQ – 8.0
Volume (L)	370	600	1200	2170	3200	6300	8500
Designed Pressure Inside Tank (Mpa)	—-	—-	—-	—-	—-	—-	0 – 0.6
The pressure of mezzanine design (Mpa)	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Compressed Air Pressure (Mpa)	0.6 – 0.7	0.6 – 0.7	0.6 – 0.7	0.6 – 0.7	0.6 – 0.7	0.6 – 0.7	0.6 – 0.7
Diameter of Feeding Port (mm)	350	350	400	400	400	500	500
Heating Area (M2)	0.3	0.6	3.8	4.7	6.0	9.5	9.5
Condensation and Cooling Area (M2)	8.2	9.5	11	12	14	18	21
Diameter of Slag Discharge Port (mm)	200	200	600	800	800	1000	1000
Motor and reducer power(KW)	0.75	1.1	1.5	2.2	3	4	5.5