circumfluence can keep the solvent density of the medicine and solution at high-gradient. The solute inside the medicine will be separated out with great speed completely (the extraction liquid is colorless). Then, the extraction liquid stops entering into the thermal reflux distillation concentrator. And secondary steam in the evaporator goes into the cooler. The evaporation will continue until the required proportion (1.2-1.34) of the plaster is available. The colorless liquid in the extraction tank will be stored in the storage tank for use of next time. The medicine residue will be drained out from the outlet of the thermal reflux distillation concentrator. If extraction with organic solvent, please add proper water first and open the steam valve to let the steam enter into the extraction tank directly or jacket. After solvent recycle, medicine residue will be drained out.

Features

• The rate for plaster collection of this thermal reflux distillation concentrator is 10-15% higher than that of the multi-functional tank and the effective elements in the plaster is one time higher than the normal one. Because the hot solvent is added into the drug surface continuously and then they pass the drug layer from up to down at a high speed to solve the solute in the drug during the extraction, so the solute in the drug material and the solute in the solvent keep in high-gradient. If the solute in the drug material can be separated out with high speed until it separates out completely, then the extraction extent of the effective content is high. Because the evaporation is finished inside the seal device with little loss and high transformation rate, so the rate for cream collection is high and the effective element inside the drug cream is high.
• Due to high solute separation speed, the extraction time is short. And the evaporation is synchronized with extraction. Hence, the drug materials can be concentrated into drug cream in 7 to 8 hours, which means the work efficiency of our thermal reflux distillation concentrator is high.
• The equipment has the advantage of simple and small floor space and high equipment availability, so the cost is lower.
• The extraction requires add solvent only for one time and the solvent is used in a set of sealed equipment cyclically. The solvent in the drug residue can be reclaimed basically, which makes the solvent usage quantity is 30% less than that of the multifunctional extraction tank and the solvent consumption is 50-70% less than that of the multifunctional extraction tank. The above advantages make our thermal reflux distillation concentrator ideal for extraction of organic solvent and purification of effective content in the China traditional medicine.
• For the evaporated secondary steam serves as the heat source of extraction, the extraction liquid pumped to the evaporator is at the same temperature level with that of the evaporator, which can save the steam for more than 50%. So this equipment features easy operation and reduces labor cost.

Function
The thermal reflux distillation concentrator is applicable for extracting useful components from animal, vegetable and herbal medicine, China traditional drug, and food additive, etc. by using water, ethanol, methanol and acetone, etc. as the solvent, and it can also be used to recycle and concentrate the organic solvent.

Technical parameters
Extraction tank volume: 1m³, 2m³, 3m³, 6m³
Evaporation tank volume: 0.5 m³, 1m³, 1.5 m³, 2.5 m³
Water extraction temperature: 90-100℃
Alcohol extraction temperature: 78-83℃
Extraction time: 5-6hour/lot
Vacuity: 0.05-0.08Mpa
Working pressure: 0.08-0.2Mpa

Working principle of thermal reflux distillation concentrator
Put the drug material into the extraction tank and add into the solvent such as water, ethanol, methanol and acetone, etc (in accordance with the technology requirement) whose capacity is five to ten times of the drug material. Open the steam valve of extraction tank or the jacket to heat the extraction liquid until the boiling lasts for about twenty to thirty minutes. Then the one third liquid will be pumped to the evaporator. Close the steam valve and open the valve of the heater to concentrate the material liquid. The secondary steam produced during evaporation will enter into the extraction tank to serve as the heat source and solution for extraction to maintain the boil inside the tank.

Wenzhou Longqiang Machinery Tech. Co., Ltd. is a China-based, professional thermal reflux distillation concentrator manufacturer. We also offer machines for dairy industry, biotech industry, pharmaceutical industry, and beverage industry since 1984. Our products are made in accordance to ISO9001:2008 quality management standard. You can feel comfortable in using them.
For orders and inquiries, please contact us at Wenzhou Longqiang Machinery Tech. CO., LTD. We look forward to working with you.