CN201182918Y - Multifunctional Microwave Extractor for Extracting Chinese Tobacco Flavors and Fragrances - Google Patents

Abstract

The utility model discloses a multifunctional microwave extractor for extracting flavors and fragrances used in Chinese cigarettes, which belongs to the technical field of extracting equipment for flavors and fragrances of cigarettes. The extraction chamber of the extraction instrument is in the shape of an upright cylinder, and there is a serpentine coil inside. The serpentine coil runs through the entire extraction chamber from top to bottom. The microwave source of the extraction chamber consists of two microwave generators and a working power supply connected to them. . The control part includes temperature control, pressure control and flow control. The temperature and pressure sensors for temperature and pressure control are arranged on the serpentine pipeline of the extraction chamber, and the flow sensor is arranged on the conduit between the valve and the extraction chamber. These sensors The electrical signal output end of the computer control system is connected with the signal input end. The extractor has a unique structure and reasonable design. It adopts serpentine coils and double microwave generators. It has powerful functions, high extraction efficiency and simple operation. It is especially suitable for the extraction of flavors and fragrances for Chinese tobacco.

Description

Multifunctional Microwave Extractor for Extracting Chinese Tobacco Flavors and Fragrances

technical field

The utility model belongs to the technical field of extraction equipment for cigarette essence and fragrance, in particular to a multifunctional microwave extractor for extracting essence and fragrance for Chinese cigarettes.

Background technique

Flavors and fragrances for Chinese-style cigarettes are the "soul" of Chinese-style cigarette products and the mystery of the formation of the style and characteristics of "Chinese-style cigarettes". Foreign companies have monopolized the core technology of tobacco flavors and fragrances, and regard the research and analysis results of flavors and fragrances and the key technologies of processing and extraction as corporate secrets and keep them strictly confidential. my country's independent core technology of flavors and fragrances is still in the critical stage. In recent years, under the advocacy of the National Bureau and the high attention of cigarette companies, there have been many research results on tobacco flavors and fragrances, but there are many generalized conventional technologies, and most of them pursue their own core technologies in the blending of imported flavors and fragrances and domestic flavors and fragrances. , there is a tendency towards homogenization of cigarette products. The real key technologies, such as the extraction of flavors and fragrances raw materials, especially the acquisition of flavors and fragrances with strong aroma, high-quality aroma and long fragrance period, which are commonly used in the cigarette industry, are basically in their infancy.

Constructing flavors and fragrances and new technologies for Chinese-style cigarettes with independent intellectual property rights, extracting flavors and fragrances from natural herbal plants, using Chinese herbal medicines that have been passed down for thousands of years for cigarettes, and letting the concept of health go to consumers with the elegant fragrance of cigarettes, which is the development One of the basic research of "Chinese cigarette". Microwave extraction technology, microwave-assisted extraction (MAE), compared with traditional Soxhlet extraction, decoction extraction, ultrasonic extraction, supercritical extraction and rapid solvent extraction, MAE is a brand new technology. Compared with traditional extraction methods such as Soxhlet extraction, water decoction extraction, and ultrasonic extraction, the heat transfer formula of the traditional heating method is: heat source→vessel→sample, and its energy transfer efficiency is restricted. Due to the penetrating ability of the microwave, it can directly and selectively interact with the molecules of the aroma substance in the sample or a certain group in the molecule, causing the internal temperature of the cell to rise rapidly, making the internal pressure of the cell exceed the capacity of the cell wall to expand, and the cell ruptures. . Molecules or groups acted by microwaves are quickly separated from plant cells and the entire sample matrix or the surrounding environment on macromolecules, thereby speeding up the separation and improving the extraction rate. The mode is: heat source→sample→vessel. Air and containers basically do not absorb and reflect microwaves, which fundamentally guarantees the rapid transmission and full utilization of energy. As a new extraction technology, microwave extraction has the advantages of high efficiency, safety, and environmental protection. However, the current microwave extraction equipment has a single working mode, all of which use extraction tanks. It is difficult for microwaves to penetrate deep into the tank, which greatly affects the extraction of active ingredients. Moreover, all straight pipes are used, which can be used for drying, but it is difficult to achieve high-efficiency extraction when used in microwave extraction. The time of straight pipes exposed to microwave irradiation is not easy to control, and various conditions are also difficult to control, which cannot meet the needs of experimental research. For small sample experiments, it is difficult to achieve success, and it is not suitable for the extraction of flavors and fragrances for tobacco, and the extraction efficiency is low.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a multi-functional microwave extractor for extracting flavors and fragrances used in Chinese tobacco, which uses a multi-wavelength microwave generator as a microwave extraction source, and is suitable for both low temperature and high temperature. Conditional work, which not only meets the needs of experimental research, but also meets the requirements of large-scale production; it can not only work under normal pressure conditions, but also can operate under high pressure and negative pressure conditions; it can complete the effective production of Chinese tobacco flavors and fragrances under diversified conditions. Ingredient extraction.

The technical scheme of the utility model is: the multi-functional microwave extractor for extracting the essence and fragrance of Chinese-style tobacco contains an extraction cavity, a microwave source, a pipeline part, a control part and auxiliary parts. The extraction chamber is in the shape of an upright cylinder, in which there is a serpentine coil with the functions of material carrying and material circulation. The serpentine coil runs through the entire extraction chamber from top to bottom. The microwave source of the extraction chamber is composed of two microwave The generator and the working power supply connected to it are composed.

The control part includes temperature control, pressure control and flow control, the temperature and pressure control temperature and pressure sensors are arranged on the serpentine coil in the extraction chamber, and the flow sensor is arranged on the conduit between the valve and the extraction chamber , the electrical signal output terminals of these sensors are connected with the signal input terminals of the computer control system.

One of the microwave generators is a microwave generator with rapid heating function arranged on the upper part of the extraction chamber. This microwave generator adopts 950MHz frequency, and the power is continuously adjustable from 0 to 20kW.

Another microwave generator is an array multi-tube microwave generator that is evenly distributed on the wall of the extraction chamber and can cover all serpentine coils. This microwave generator adopts 2450MHz frequency, and the power is continuously adjustable from 0 to 20kW.

The aperture of the serpentine coil is 25-35 mm, and the serpentine coil is made of materials that can withstand pressure, high temperature, acid and alkali corrosion, and organic solvent corrosion. The material that can withstand pressure, high temperature, acid and alkali corrosion, and organic solvent corrosion is polytetrafluoroethylene.

Among the accessory parts, there are material storage tanks, pumps, and valves connected to the feed end of the extraction chamber in turn, and conduits are connected therebetween; among the accessory parts, there are condensation pipes connected to the outlet end of the extraction chamber in turn. , a filter, a concentration tank, and a storage tank, with conduits communicating among them. The electric signal control terminals of the pump and the valve are respectively connected with the computer with control signal lines.

The utility model has a unique structure and a reasonable design. It adopts serpentine coils and double microwave generators. It has powerful functions and various working modes. It is suitable for working under various conditions. It has high extraction efficiency, simple operation, economical operation and It has the advantages of green and environmental protection, and is especially suitable for the extraction of flavors and fragrances for Chinese tobacco.

Description of drawings

Accompanying drawing 1 is a structural representation of an embodiment of the utility model;

Accompanying drawing 2 is prior art boiled extract gas chromatogram;

Accompanying drawing 3 is the utility model extractor extract gas chromatogram.

The marks in the accompanying drawings are described as follows: 1-material storage tank; 2-pump; 3-conduit; 4-valve; 5-extraction chamber; 6-temperature and pressure sensor; 7-computer; Generator; 10-filter; 11-concentrating tank; 12-storage tank; 13-condensing pipe; 14-serpentine coil; 15-control signal line.

Detailed ways

Below in conjunction with accompanying drawing, the technical problem relevant to the utility model is described in further detail. As shown in Figure 1, the multifunctional microwave extractor for extracting flavors and fragrances for Chinese-style cigarettes of the present invention is composed of an extraction cavity, a microwave source, a pipeline part, a control part and auxiliary parts. The extraction chamber 5 is an upright cylinder, in which there is a serpentine coil 14 with both material carrying and material circulation functions. The serpentine coil 14 runs through the entire extraction chamber 5 from top to bottom, and the extracted material passes through from top to bottom. The entire serpentine coil 14 is irradiated by the microwave generator 8 or/and 9. After the extraction is completed, the material enters the condenser pipe 13 from the discharge end, passes through the filter 10 after cooling down, enters the concentration tank 11 after being filtered, and finally enters the storage tank 12 saved. At the beginning of the extraction, the raw materials to be extracted are put into the material storage tank 1, and the material storage tank 1 is provided with a stirrer, and the stirring speed is continuously adjustable from 0 to 1000 rpm. The material in the material storage tank 1 is introduced into the microwave extraction chamber 5 through the pump 2 according to the working mode set by the computer 7 .

The control part of the extraction instrument of the present utility model includes temperature control, pressure control and flow control, and the temperature and pressure sensors 6 for temperature and pressure control are arranged on the serpentine coil 14 in the extraction chamber 5, and the flow sensors are arranged on the valve 4 and the On the conduit 3 between the extraction chambers 5, the electrical signal output ends of these sensors are connected with the signal input ends of the computer 7 control system. The control part can be operated by human-machine interface, which can realize the flow control of materials and the start-up of microwave generator 8, microwave generator 9 and valve 4. At the same time, when the system is working, it can realize real-time monitoring and feedback of temperature and pressure to ensure the stability of the system. normal work. The microwave source of the present utility model has two microwave generators, so this extractor has two kinds of working modes, and mode one is used for the experimental work of a small amount of materials, only opens microwave generator 9, is used for extraction; Mode two is used for In industrial production, the microwave generator 8 and the microwave generator 9 are started simultaneously, wherein the microwave generator 8 is mainly used for instantaneous heating, and the microwave generator 9 is mainly used for extraction. The pipe diameter of the serpentine coil 14 is 25-35mm, and it is placed upright so that the material can move smoothly from top to bottom. Solvent corroded materials are made of polytetrafluoroethylene, because polytetrafluoroethylene has almost no absorption of microwaves.

The basic principle of the utility model multifunctional microwave extractor for extraction of flavors and fragrances used in Chinese tobacco is: the process parameters are set on the man-machine interface computer 7, and the mechanical pump 2 imports the material stored in the material storage tank 1 through the pipeline 3 In the microwave extraction chamber 5, the microwave generators 8 and 9 are started under the instruction of the computer, and the extraction is completed under the monitoring of the temperature and pressure sensor 6, and then after being condensed by the condenser 13, it enters the filter 10 to filter and concentrate in the concentration tank 11 to concentrate, and finally Store in extract storage tank 12. The flow control of the above-mentioned pump 2 is continuously adjustable in the range of 0-200kg; the filter pore size of the filter 10 can be adjusted according to the needs. Requirements; Concentration tank 11 can be set to concentrate at different temperatures to meet the requirements of concentrating different flavors and fragrances; the concentration temperature can be set at 50-90 degrees to meet the needs of different solvents; the working power supply adopts a three-phase five-wire system, Commonly used 380V rated working voltage.

The applicant has carried out the comparative test of this extractor and boiled extraction, mixed three kinds of natural herbal medicine according to the proportion and divided them into two equal parts, added the same volume of solvent for extraction, wherein the conventional boiled extraction for 2 hours, and the microwave extraction for 12 hours. minutes to obtain an equal volume of primary extract. After processing with the same filter concentration device, the final extract was stored in a 250ml sample bottle. When filtering, with the same filter device, the filtration of the material liquid of microwave extraction is much smoother than that of boiling extraction. After standing for a week, it was found that a paste-like precipitate with a thickness of about 3 mm appeared in the boiled extract, but did not appear in the microwave extract. The above boiled extract and microwave extract were filtered to achieve solid-liquid separation, and the obtained solid was dried and weighed. The results are shown in Table 1. It can be seen that the solid content of the extract obtained by microwave extraction is significantly smaller than that of the former.

Table 1, the proportion of the solids obtained by the separation of the extract and the solids after drying

Extract (g) Separated solid (g) Dry solid (g) Dry solids/extract (%) Boiled Extract 250 35.0 3.45 1.38 This microwave extractor 250 1.5 0.15 0.06

Accompanying drawing 2 is the gas chromatogram of boiled extract, and accompanying drawing 3 is the gas chromatogram of microwave extractor extract. The results shown in the figure show that the contents of pectin, chlorophyll and starch, which have a negative impact on tobacco flavor, in the microwave extract are significantly less than those in the boiled extract, while flavonoids, etc., which have a positive effect on tobacco flavor There are much more aroma substances than boiled extract.

The applicant also conducted a smoking evaluation comparison, adding the above two extracts to the same shredded tobacco in the same proportion, and asked specialized smoking evaluation personnel to evaluate smoking. It was found that for the above three mixed compound extracts, microwave extraction Compared with the boiled extract, the tobacco smoke is smoother and softer, the miscellaneous gas is slightly reduced, and the mouth is clean. The overall evaluation is better than the latter. The comparative effect is shown in Table 2.

Table 2. Comparison of smoking results when different extracts were added to shredded tobacco in the same proportion

Extraction process Glossy 5 Fragrance 32 Coordination 6 Miscellaneous gas 12 Irritant 20 Aftertaste 25 Total Boiled Extract 4 28 5 10 18 twenty two 87 Microwave Extractor 4 28.5 5.5 10.5 18 twenty three 89.5

Claims (10)

1. A multifunctional microwave extractor for extracting flavors and fragrances used in Chinese-style cigarettes, comprising an extraction chamber, a microwave source, a pipeline part, a control part and ancillary parts, characterized in that: the extraction chamber (5) is an upright cylinder, and the inside A serpentine coil (14) with both material carrying and material circulation functions is provided. The serpentine coil (14) runs through the entire extraction chamber (5) from top to bottom. The microwave source of the extraction chamber (5) is two microwave Generator (8, 9). 2. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese tobacco according to claim 1, characterized in that: the control part includes temperature control, pressure control and flow control, and the temperature and pressure for temperature and pressure control The sensor (6) is arranged on the serpentine coil (14) in the extraction chamber (5), the flow sensor is arranged on the conduit (3) between the valve (4) and the extraction chamber (5), and the electrical signals of these sensors The output end is connected with the signal input end of the computer (7) control system. 3. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese tobacco according to claim 1, characterized in that: the microwave generator (8) is a microwave generator with rapid heating function arranged on the upper part of the extraction chamber (5) device. 4. The multi-functional microwave extractor for extracting flavors and fragrances for Chinese tobacco according to claim 1 or 3, characterized in that the microwave generator (8) adopts a frequency of 950 MHz, and its power is continuously adjustable from 0 to 20 kW. 5. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese tobacco according to claim 1, characterized in that: the microwave generator (9) is evenly distributed on the wall of the extraction chamber (5) and can cover the entire An array type multi-tube microwave generator of a serpentine coil (14). 6. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese-style tobacco according to claim 1 or 5, characterized in that the microwave generator (9) adopts a frequency of 2450 MHz, and its power is continuously adjustable from 0 to 20 kW. 7. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese tobacco according to claim 1, characterized in that: the diameter of the serpentine coil (14) is 25-35mm, and the diameter of the serpentine coil (14) is It is made of materials that can withstand pressure, high temperature, acid and alkali corrosion, and organic solvent corrosion. 8. The multifunctional microwave extractor for extracting flavors and fragrances used in Chinese tobacco according to claim 7, characterized in that: the material that can withstand pressure, high temperature, acid and alkali corrosion, and organic solvent corrosion is polytetrafluoroethylene vinyl. 9. The multifunctional microwave extractor for extracting flavors and fragrances for Chinese-style tobacco according to claim 1, characterized in that: among the accessory parts, there are material storage tanks ( 1), pump (2), valve (4), there are conduits (3) to communicate therebetween; among the said accessory parts, there are condensation pipes (13), filter tubes (13) and filter tubes connected to the discharge end of the extraction chamber (5) successively. (10), concentration tank (11), storage tank (12), there is conduit (3) to be connected therebetween. 10. The multifunctional microwave extractor for extracting flavors and fragrances used in Chinese tobacco according to claim 9, characterized in that: the electric signal control terminals of the pump (2) and the valve (4) are connected with the computer (7) respectively. The control signal lines (15) are connected together.

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