Low temperature aroma separation integrated system
Patent Information
- Application Number
- CN202522380224.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0004]本实用新型的目的在于提供低温香气分离集成系统，它能解决顶香被主馏稀释/回溶、切割靠经验重现性差、切换回吸与氧化、热敏香气热史过长等问题，同时提高装配与清洗的标准化
本专利在前级低温冷凝器与后级冷凝器之间设置三通切换阀，形成可控的分段点，前馏进入独立的前馏瓶，使得顶香品质明显提升，关键香气成分保留增加；控制上采用温度、收集量等客观判断依据触发切换，确保重现性，使得切割时机客观可控，产品重现性显著改善；切阀时同步惰性气脉冲防止回吸，减少倒吸与氧化，异味风险降低；标准接口设计，易与现有设备配套，使得装置装配简便，易于推广应用。
Smart Images
Figure CN224798825U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fine extraction of essential oils, specifically a low-temperature aroma separation integrated system. Background Technology
[0002] Essential oils, also known as volatile oils, are a class of aromatic, volatile, oily liquids found in plants that can be distilled from steam. Plant essential oils are widely distributed throughout the plant kingdom; my country has over 300 species of wild and cultivated aromatic and medicinal plants containing essential oils. Plant essential oils are found in various tissues and organs of plants, including glandular hairs, oil chambers, oil ducts, secretory cells, and resin ducts. Most exist as oil droplets, but some also coexist with resins and mucilage.
[0003] Traditionally, the most common method for separating plant essential oils is steam distillation, including rotary evaporation. However, conventional rotary evaporation has the following problems: The single-stage condenser and single receiving flask structure leads to mixed distillate products, making it difficult to separate the top aroma from the main distillate; Cutting relies on experience-based judgment, resulting in large batch-to-batch fluctuations. It is prone to backflow and oxidation, resulting in a decline in aroma quality; Heat-sensitive components are easily damaged. Utility Model Content
[0004] The purpose of this invention is to provide a low-temperature aroma separation integrated system that can solve problems such as the dilution / redissolution of top aroma by the main distillate, poor reproducibility of cutting based on experience, switching between reabsorption and oxidation, and excessively long thermal history of heat-sensitive aromas, while improving the standardization of assembly and cleaning.
[0005] To achieve the above objectives, this utility model employs the following technical solution: A low-temperature aroma separation integrated system includes an evaporation flask and a pre-stage low-temperature condenser connected in sequence, wherein the pre-stage low-temperature condenser is connected to a first branch and a second branch respectively. The first branch includes a fore-distillation flask connected to the pre-stage cryogenic condenser; The second branch includes a sequentially connected downstream condenser, a three-way check valve, a collection bottle and an inert gas interface and a vacuum end connected to the three-way check valve respectively, and the downstream condenser is connected to the upstream cryogenic condenser.
[0006] Furthermore, the pre-stage cryogenic condenser is connected to the first branch and the second branch via a three-way switching valve.
[0007] Furthermore, the three-way check valve is connected to the inert gas interface and the vacuum end via a three-way switching valve.
[0008] Furthermore, a temperature probe is also connected between the pre-stage cryogenic condenser and the first and second branches.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This patent features a three-way switching valve between the pre-stage low-temperature condenser and the post-stage condenser, creating a controllable segmentation point. The pre-distillate enters a separate pre-distillation flask, significantly improving the quality of the top aroma and increasing the retention of key aroma components. Control is achieved by triggering the switching based on objective judgments such as temperature and collection volume, ensuring reproducibility and making the timing of the cut objectively controllable, thus significantly improving product reproducibility. A synchronous inert gas pulse during valve cutting prevents backflow, reducing backflow and oxidation, and lowering the risk of off-odors. The standard interface design facilitates compatibility with existing equipment, making the device easy to assemble and readily applicable. Attached Figure Description
[0010] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] The labels in the attached diagram are as follows: 1. Evaporation flask; 2. Pre-stage cryogenic condenser; 3. Pre-distillation flask; 4. Post-stage condenser; 5. Three-way check valve; 6. Inert gas inlet; 7. Vacuum end; 8. Three-way switching valve; 9. Temperature probe; 10. Collection bottle. Detailed Implementation
[0012] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0013] Example: A low-temperature aroma separation integrated system includes an evaporator 1 and a pre-stage low-temperature condenser 2 connected in sequence. The pre-stage low-temperature condenser 2 is connected to a first branch and a second branch via a three-way switching valve 8. A temperature probe 9, selected as a TH1 temperature probe, is also connected between the pre-stage low-temperature condenser 2 and the first and second branches. The pre-stage low-temperature condenser 2, the three-way switching valve 8, and the pre-distillation flask 3 are independently supported by an iron stand and universal clamps, staggered from the evaporator 1. All ground joints are thinly coated with vacuum grease and secured with clamps.
[0014] A phased P-T curve is adopted, with the first branch at 200–300 mbar and 30–40°C; and the second branch at 80–150 mbar and 38–45°C. The cutting criteria are based on a volume fraction of 1–3% and the temperature rise threshold or drip rate inflection point of the temperature probe 9, ensuring reproducibility and making the cutting timing objectively controllable. The product reproducibility is significantly improved, and electric valves and constant temperature automation can also be added.
[0015] The first branch includes a pre-distillation flask 3 connected to the pre-stage low-temperature condenser 2, and is equipped with a three-way switching valve 8 to form a controllable segmentation point. The pre-distillate enters an independent pre-distillation flask 3, which significantly improves the quality of the top aroma and increases the retention of key aroma components. The second branch includes a sequentially connected post-stage condenser 4, a three-way check valve 5, and an inert gas interface 6 and a vacuum end 7 connected to the three-way check valve 5 via a three-way switching valve 8. The collection bottle 10 is directly connected to one of the interfaces of the three-way switching valve 8 to collect the main distillate of the second branch. The post-stage condenser 4 is connected to the pre-stage cryogenic condenser 2. All three-way switching valves 8 are low dead space PTFE / PFA three-way valves. When the valve is switched, a synchronous inert gas pulse prevents backflow, reduces backflow and oxidation, and lowers the risk of odor.
[0016] In summary, this patent can solve problems such as dilution / redissolution of top aroma by main distillation, poor reproducibility of cutting based on experience, switching between reabsorption and oxidation, and excessively long thermal history of heat-sensitive aromas. At the same time, it improves the standardization of assembly and cleaning, increases the retention of key volatiles by about 20-40%, controls the volume fraction of the foredistillate at 1-3%, and reduces the inter-batch RSD to ≤10%. Reabsorption and "mixed aromas" are significantly reduced, with almost no increase in total duration and energy consumption.
Claims
1. A low-temperature aroma separation integrated system, characterized in that: It includes an evaporation flask (1) and a pre-stage low-temperature condenser (2) connected in sequence, wherein the pre-stage low-temperature condenser (2) is connected to a first branch and a second branch respectively. The first branch includes a front distillation flask (3) connected to the front cryogenic condenser (2); The second branch includes a sequentially connected post-stage condenser (4), a three-way check valve (5), a collection bottle (10), an inert gas interface (6), and a vacuum end (7) connected to the three-way check valve (5), respectively. The post-stage condenser (4) is connected to the pre-stage cryogenic condenser (2).
2. The low-temperature aroma separation integrated system according to claim 1, characterized in that: The pre-stage cryogenic condenser (2) is connected to the first branch and the second branch via a three-way switching valve (8).
3. The low-temperature aroma separation integrated system according to claim 1, characterized in that: The three-way check valve (5) is connected to the inert gas interface (6) and the vacuum end (7) through the three-way switching valve (8).
4. The low-temperature aroma separation integrated system according to claim 1, characterized in that: A temperature probe (9) is also connected between the pre-stage cryogenic condenser (2) and the first and second branches.