Double / Multi Effect Falling Film Concentrator-Yuwei Filtration Equipment Co., Ltd.

Description

The Double / Multi Effect Falling Film Concentrator unit is a combined extraction and concentration unit, which is suitable for the extraction, concentration, ointment collection, percolation, volatile oil extraction and alcohol recovery of heat-sensitive materials such as plants, animals, traditional Chinese medicine, and food additives to meet the needs of institutions of higher learning, Scientific research institutions, hospitals, etc. are used for extraction of new drugs, determination of technical parameters of new processes, intermediate tests, development of new varieties, extraction of precious medicinal materials and concentration of medicinal liquids. The double-effect evaporator has one more set of heaters and evaporators than the single-effect evaporator, and its evaporation efficiency is higher, and the double-effect evaporator is also more energy-saving.

Specification

Extraction tank solvent (m³)	0.5	1	2	3	6
Concentrator evaporation capacity (L)	250	500	800	1000	2000
Extraction temperature (°C)	Single Effect: 80~90
	Double Effect: 60-70
Extraction time	6~8h/batch
Vacuum (MPa)	Single Effect: 0.04
	Double Effect: -0.06
Design pressure (MPa)	0.09~0.3

Advantages

Reduce production time by 50%. The traditional process is to concentrate after multiple extractions, but in this process, the two processes of concentration and extraction are carried out simultaneously in a set of equipment, and it only takes (6-8) hours to complete it at one time.
Save more than 60% of steam, the secondary steam generated in the concentrator can be used as a heat source for direct heating of the extraction tank, and the liquid medicine enters the concentrator at a relatively high temperature, with very little heat loss.
The amount of solvent input is reduced by 60%. The extraction tank only needs to add solvent once, and it can be recycled in a set of sealed equipment. The solvent of medicinal residue and liquid gas can basically be recovered (the loss rate is below 5%), so the amount of solvent is less, the consumption is low, and the production cost is greatly reduced.
The yield of ointment can be increased by 10%-20% compared with traditional technology, and the content of medicinal ingredients is doubled. Because the one-time injection of the solvent can realize a large reflux cycle, the solute concentration in the medicinal material and the solute concentration in the solvent always maintain a high gradient. Therefore, the solute in the medicinal material dissolves rapidly. The yield of ointment and active ingredients has increased significantly, laying a good foundation for qualitative and quantitative identification of drugs.
One machine with multiple functions (extraction alone, concentration alone, concentration while extraction), compact structure and easy operation. A set of equipment can be operated by one person, with a small footprint, saving intermediate storage tanks, and low investment costs.
The whole set of equipment is made of imported SUS304 stainless steel, and the production is fully sealed and pipelined, which not only reduces environmental pollution, but also eliminates the infiltration of heavy metals and bacteria, and fully meets the requirements of GMP.
Since the equipment operates under negative pressure, the extraction temperature can be adjusted arbitrarily between 70-80°C, which is extremely beneficial for the extraction of heat-sensitive drugs and medicinal materials that are prone to polymerization.

Structure & Principle

Put the prepared prescription medicinal materials into the extraction tank, add 5-10 times the amount of solvent at one time (the nature of the solvent and the amount added are according to the process requirements) and soak for a certain period of time, then open the steam valve to heat, (direct steam heating only water extraction and extraction of aromatic oil) After the set time is boiled and extracted, the higher temperature extract can be continuously filtered from the bottom of the extraction tank through the filter to the filter and then into the concentrator. The steam generated during concentration enters the condenser and becomes condensate, which is sprayed into the extraction tank as a new solvent; the secondary steam generated in the extraction tank is cooled and tightened by the condenser to form a condensate, which falls back into the extraction tank. All the steam generated by the solvent is turned into condensate and returned to the extraction tank through heat exchange. The secondary steam is fully utilized in the process to form a new solvent for large reflux extraction. Therefore, the solute and solvent in the medicinal material always maintain a high-gradient mass transfer. High speed dissolution. Therefore, this set of equipment has excellent performance in terms of energy saving and maintaining solvent balance. The new solvent dissolves the soluble matter in the medicinal material through the medicinal material layer from top to bottom to the bottom of the extraction tank, and then is drawn into the concentrator. Repeat the above process, so that the formed solvent is extracted--concentrated (recovered) and returned several times, and the extract is colorless. At this time, the secondary vapor condensed liquid enters the extraction tank, enters the storage tank or discharges. The concentrator continues to concentrate until it reaches the liquid extract with a specific gravity (1.1-1.25), and releases it for later use.

Applications

The Double / Multi Effect Falling Film Concentrator is suitable for herbal medicine, Chinese herbal medicine, animal medicine, food additive, etc. Use water, ethanol, methanol, acetone, etc. to extract and recover and concentrate organic solvents.

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