CN101284141A - Microwave continuous heating sterilization process of solid material - Google Patents
Microwave continuous heating sterilization process of solid material Download PDFInfo
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- CN101284141A CN101284141A CNA2008100728901A CN200810072890A CN101284141A CN 101284141 A CN101284141 A CN 101284141A CN A2008100728901 A CNA2008100728901 A CN A2008100728901A CN 200810072890 A CN200810072890 A CN 200810072890A CN 101284141 A CN101284141 A CN 101284141A
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Abstract
The invention provides a method for continuously sterilizing solid material via microwave heating by continuously pressing heated pressurized sterile air into a microwave continuous heating device and employing a reciprocating piston type seal valve to solve pressurized operation and feed/discharge operation of a set of microwave heating device. Compared with conventional steam heating and sterilizing, the method has the advantages of obviously shortened sterilizing time, no environment pollution, simple equipment, low energy consumption, convenient operation, and easily realized automation. The method can be used in the technology fields of food, pharmacy, brewage, organic waste disposal, solid state fermentation, chemical engineering, etc.
Description
One, relates to technical field
A kind of microwave continuous heating sterilization process of solid material relates to biological engineering, chemical industry, food and field of environment engineering.
Two, background technology
Solid materials such as granule, powder shape adopt microwave heating to compare with traditional Steam Heating and sterilization with sterilization, can obviously shorten sterilization time, do not have problem of environmental pollution, have that equipment is simple, energy consumption is low, an operation and realize many advantages of automatization easily easily.At present in food, pharmacy, agricultural byproducts processing, brewage, numerous areas such as debirs processing, solid fermentation, chemical industry, manufacturing industry, run into the heating and the sterilization treatment problem of solid material through regular meeting.When microwave treatment varieties of food items, fermentation material and moisture solid material, need pressurization just can make material temperature reach more than 120 ℃, reach kill bacteria brood cell's temperature, therefore need could realize the purpose that solid material is thoroughly sterilized being with continuous feeding and discharging under the pressure condition.
Three, summary of the invention
Adopt the band of heating to press filtrated air to keep the air pressure of microwave heating environment, can utilize microwave heating that solid material is sterilized.Based on this principle, we have designed the microwave continuous bactericidal unit of screw-pushing type solid material.The band that we adopt air compressor machine to charge into heating in microwave heating equipment is pressed filtrated air, operating pressure in order to regulation and control microwave heating equipment inside, the band that adopts the reciprocating-piston seal valve to solve a whole set of microwave heating equipment is pressed operation and input and output material operation, and the realization microwave is handled the continuous sterilization of solid material.
The microwave continuous bactericidal unit of solid material is by spiral propeller (4), microwave heating chamber (5), motor (18), change speed gear box (20), air compressor (8), fine sand filtering tank (9), activated carbon filtration jar (10), air drying jar (11), air heater (12), air strainer (13), biofilter (14), reciprocating-piston seal valve (2), drive (21), switch board (16), movable (or fixing) support (15), adjustable lifting (or fixing) support (19), feed hopper (1), discharging opening (6), temperature sensor (7), observation window (3) and appliance stand (17) are formed.
The target of the microwave continuous heating sterilization of solid material is achieved in that the solid material with the need sterilization adds spiral propeller (4) by feed hopper (1) by piston seal valve (2), be pushed to the place ahead discharging opening (6) along the spiral propeller long axis direction, solid material is in moving process, heated by microwave chamber (5) is heated sterilization, sterilising temp and sterilization time can be regulated control by the operating pressure of microwave heating power and material fltting speed and filtrated air, are discharged by the piston seal valve from discharging opening (6) by the solid material after sterilizing.Whole sterilization process can carry out continuously.
The spiral propeller of the microwave continuous heater of screw-pushing type solid material adopts the engineering material withstand voltage, heat-resisting, that the penetrating rate of microwave is high (politef, engineering ceramics, safety glass, heat-resistant engineering plastic, fiberglass and refractory material bonding or fire form) preparation.
Spiral propeller can level be placed with inclination, when the spiral propeller level advances material, often make material generation mild compression greatly because of propelling resistance, after spiral propeller inclination (0 °≤angle of inclination 〉=90 °) placement, can utilize gravity that the effect of material is reduced the material propelling resistance, alleviate the compressed degree of material in the progradation, reduce material thrust power energy consumption.Lowering or hoisting gear is installed in bottom at spiral propeller feed hopper one end, in the bottom of spiral propeller discharging opening one end travel(l)ing rest is installed, and can realize that the gradient of spiral propeller is regulated, and reaches to advance effect preferably; Can also design the fixed support of constant tilt angle according to the character of required sterilization material.
The heating clamber of the microwave continuous bactericidal unit of solid material is designed to cylindric, and according to the stack (stack of microwave heating power) that heat request carries out microwave generator such as magnetron that adds of solid material, principle of stacking and mode are as follows:
Mode one, can on the corresponding site of the circumference in equal parts in circular resonant chamber, carry out the installation of magnetron, as 2 pipes on 2 circumference in equal parts install, 3 pipes are installed on 3 circumference in equal parts, 4 pipes are installed on 4 circumference in equal parts, 5 pipes on 5 circumference in equal parts install ...
Mode two, the grouping that can carry out magnetron on the corresponding site of the circumference in equal parts in circular resonant chamber are installed, and as one group of 2 pipe on 4 circumference in equal parts, two group of 4 pipe installed, one group of 2 pipe on 6 circumference in equal parts, and three group of 6 pipe installed; One group of 3 pipe, two group of 6 pipe installed; 6 pipes are one group on 12 circumference in equal parts, and two group of 12 pipe installed; One group of 4 pipe, three group of 12 pipe installed; One group of 3 pipe, four group of 12 pipe installed; One group of 2 pipe, six group of 12 pipe installed ...
Mode three, can on circumference in equal parts, carry out the installation of the magnetron of respective sets number by certain-length unit along long axis direction at cylindric resonator cavity wall.
Adopt aforesaid way that magnetron is installed, can realize forming bigger microwave heating power with the smaller power magnetron, and necessarily realizing microwave heating district comparatively uniformly in the zone, by grouping magnetron is installed, can realize switching between the group of magnetron working time, can effectively guarantee the service life of magnetron.
Adopt above many group magnetron mounting techniques that following advantage is arranged:
1, can realize the microwave applicator of big output;
2, can realize the microwave heating process of adjustable power;
3, can utilize 900W magnetron and the control circuit thereof that present production technology is very ripe, cost performance is higher;
4, single magnetron and control circuit performance unanimity thereof can be exchanged, convenient for maintaining, and the accessory abundance is easily purchased.
Mounting temperature sensor on the spiral propeller wall (7) is used for the on-line continuous observing and controlling of solid material heating-up temperature.
Aseptic compressed air is to utilize common air compressor machine with air compression (8), be compressed air and at first pass through fine sand filtration treatment (9), adsorption filtration oil stain and dirt, again through activated carbon filtration and adsorption treatment (10), carry out air drying at drying chamber then and handle (11), desiccant adopts reusable discolour silica gel desiccant, calcium chloride etc., compressed air after above-mentioned processing is through air heater heating (12), at last by fine filter (13) and bacterial filter (14), become band and press filtrated air, the pressure of output filtrated air should be typically chosen between the 0.1Mpa-0.21Mpa more than 0.089Mpa.Utilize air compressor to continue to provide aseptic air with pressure in spiral propeller (4), the filtrated air pressure that adopts reciprocating-piston seal valve (2) to solve assurance spiral propeller inside in material handling maintains the difficult problem in the technological requirement scope; Microwave energy is heated to the temperature of solid material more than 120 ℃, and the pyrolysis of material or below the coking temperature can be satisfied the sterilization requirement of dissimilar solid materials.
The turnover speed of material can be by regulating the reciprocating frequence control of reciprocating-piston seal valve, and the reciprocating-piston seal valve adopts air pressure, hydraulic pressure or motor-driven, utilizes electromagnetic valve and relevant control circuit to carry out the control of reciprocating frequence easily.
By the observation window on the reciprocating-piston seal valve (3), can observe the practical situation in the solid material turnover spiral propeller, so that carry out technology controlling and process.
After unload the reciprocating piston valve from the charging and discharging mouth, removing the filtrated air preparation facilities, this method can be used for the continuous heating process of solid material below 100 ℃.
Above process utilizes microcomputer to detect control, realizes automatization's continued operation easily.
Four, description of drawings
Fig. 1: be the microwave continuous bactericidal unit sketch map of solid material
1, feed hopper; 2, reciprocating-piston seal valve; 3, observation window; 4, spiral propeller; 5, microwave heating chamber; 6, discharging opening; 7, temperature sensor; 8, air compressor machine; 9, spun yarn filtering tank; 10, activated carbon filtration jar; 11, air drying jar; 12, air heater; 13, air fine straining jar, 14, air sterilization and filtering device; 15, movable (or fixing) support; 16, switch board; 17, equipment supporter; 19, adjustable lifting (or fixing) support; 18, motor; 20, change speed gear box; 21 drives.
Fig. 2: reciprocating-piston seal valve internal structure
23, intake and exhaust electromagnetic valve; 25, air-pressure chamber; 26, air rammer; 27, the input and output material pipeline in the piston; 28, seal valve input and output material hole; 22, sealing ring; 24, relief valve.
Five, the specific embodiment
1, the sterilization of solid fermentation material: produce in the production process of Monas cuspurpureus Went, protease, citric acid, ethanol, lactic acid, gibberellins, soy sauce, vinegar, Chinese liquor, albumen feedstuff, edible fungi etc. at solid fermentation, the culture medium that solid fermentation is used need be carried out sterilization treatment." a kind of microwave continuous heating sterilization process of solid material " that adopts us to invent, solid material with the need sterilization treatment, add spiral propeller (4) by feed hopper (1) by piston seal valve (2), be pushed to the place ahead discharging opening (6) along the spiral propeller long axis direction, solid material is in moving process, sterilized in heated by microwave chamber (5), sterilising temp and sterilization time can be regulated by the operating pressure of microwave heating power and material fltting speed and filtrated air, sterilization temperature looks material properties and the sterilization process requirement is chosen in 120 ℃-140 ℃ scope, the operating pressure of filtrated air is typically chosen between the 0.1Mpa-0.21Mpa, time 2-60 minute.Discharged by the piston seal valve from discharging opening (6) by the solid material after the sterilization.Utilize this technology can realize sterilization treatment to above-mentioned fermentation material reaching the related process requirement.This method is compared with traditional steam sterilization technology, sterilization time is short, nutritional labeling destructiveness to material is little, simultaneously can not need steam boiler, simplified treatment facility significantly, reduced operating cost and management cost, reduced pollution and influence environment, realize automation mechanized operation easily, have actual application value.
2, the sterilization treatment of the solid material in the food processing process: in food processing process, " a kind of microwave continuous heating sterilization process of solid material " that adopts us to invent can carry out continuous heating sterilization to dry fruit, preserve, pickles, various toppings etc. and handle; Corresponding product after sterilization treatment is edible much cleaner, safer, and the shelf life of its product and value preserving phase are more secure.
3, the pretreatment of Chinese herbal medicine and effective ingredients in plant extraction: in the Chinese herbal medicine effective ingredients leaching process, during as the extraction of resveratrol, ginsenoside, ephedrine, glycyrrhizic acid, shikonin etc., the raw material grass meal is sprayed water prewet earlier and afterwards placed 5～30 minutes, injection flow rate root a tree name associated extraction technology and deciding, water spray prewet can make grass meal when microwave treatment by Fast Heating, simultaneously also make the grass meal organizational structure carried out damaged processing by microwave.
Chinese herbal medicine medicated powder solid material with the need microwave treatment, add spiral propeller (4) by feed hopper (1) by piston seal valve (2), be pushed to the place ahead discharging opening (6) along the spiral propeller long axis direction, solid material is in moving process, heated by microwave chamber (5) is processed, treatment temperature and processing time can be regulated by the operating pressure of microwave heating power and material fltting speed and filtrated air, the operating pressure of filtrated air is typically chosen between the 0.1Mpa-0.21Mpa, time 1-30 minute.Discharged by the piston seal valve from discharging opening (6) by the solid material after the sterilization.
Through above high temperature moment microwave treatment, the extraction ratio of Chinese herbal medicine effective ingredients is increased significantly.In addition, this method plant pigment, essence, hormone, etc. during the extraction of effective ingredient, extraction ratio is increased significantly equally.
4, when organic fertilizer production, the production technology of heap fermentation maturity is built in domestic common employing, unavoidable remaining harmful microorganism and harmful toy in the fertilizer of being produced, steam sterilization is owing to need main equipment such as boiler, and steam sterilization process implementing difficulty is bigger; " a kind of microwave continuous heating sterilization process of solid material " that adopts us to invent, organic fertilizer product is carried out sterilization to be handled, can improve the composting quality of compost, can kill harmful microorganism and insect in the stockpile, guarantee that the fertilizer that becomes thoroughly decomposed reaches the relevant sanitary standard of national regulation, this class fertilizer is except that routine is used, and the ornamental flower that is used for family, hotel, dining room preferably is cultured.
Claims (7)
1, adopt the band of heating to press filtrated air to keep the operating air pressure of microwave heating environment, the band that adopts the reciprocating-piston seal valve to solve a whole set of microwave heating equipment is pressed operation and input and output material operation, realizes utilizing microwave heating that solid material is carried out continuous sterilization and handles.
2, the microwave continuous bactericidal unit of solid material is by spiral propeller (4), microwave heating chamber (5), motor (18), change speed gear box (20), air compressor (8), fine sand filtering tank (9), activated carbon filtration jar (10), air drying jar (11), air heater (12), air strainer (13), biofilter (14), reciprocating-piston seal valve (2), drive (21), switch board (16), movable (or fixing) support (15), adjustable lifting (or fixing) support (19), feed hopper (1), discharging opening (6), temperature sensor (7), observation window (3) and appliance stand (17) are formed; The solid material of need sterilization is added spiral propeller (4) by feed hopper (1) by piston seal valve (2), be pushed to the place ahead discharging opening (6) along the spiral propeller long axis direction, solid material is in moving process, heated by microwave chamber (5) is heated sterilization, sterilising temp and sterilization time can be regulated control by the operating pressure of microwave heating power and material fltting speed and filtrated air, discharged by the piston seal valve from discharging opening (6) by the solid material after the sterilization, whole sterilization process can carry out continuously.
3, solid material sterilizing methods according to claim 1 is characterized in that: the band that is pressed into heating in continuous sterilizer is pressed filtrated air, and the pressure of filtrated air should be typically chosen between the 0.1Mpa-0.21Mpa more than 0.089Mpa in the device; Microwave energy is heated to the temperature of solid material more than 120 ℃, the pyrolysis of material or below the coking temperature.
4, solid material sterilizing methods according to claim 1, it is characterized in that: the speed of the turnover microwave heating equipment of solid material can be by regulating the reciprocating frequence control of reciprocating-piston seal valve, the reciprocating-piston seal valve adopts air pressure, hydraulic pressure or motor-driven, utilizes electromagnetic valve and relevant control circuit to carry out the control of reciprocating frequence easily.
5, device according to claim 2 is characterized in that: the heating clamber of this device is designed to cylindrical shape, and microwave generator is pressed certain-length and circumference Along ent position, and grouping is installed in the cylindrical shape resonator cavity of heating clamber, and the alternation of can dividing into groups to switch; This installs running hours, and microwave heating power can be by the power principle of stacking of microwave generator, online adjustment.
6, device according to claim 2 is characterized in that: spiral propeller can level and is tilted to place promptly 0 °≤angle of inclination 〉=90 °, and mounting temperature sensor on the wall of spiral propeller can carry out online measurement and control of temperature to adding thermal material.
7, device according to claim 2, it is characterized in that: when the microwave continuous bactericidal unit charging and discharging mouth from solid material unloads the reciprocating piston valve, after removing the filtrated air preparation facilities, this method can be used for the continuous heating process of solid material below 100 ℃.
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| CNA2008100728901A CN101284141A (en) | 2008-06-02 | 2008-06-02 | Microwave continuous heating sterilization process of solid material |
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| CNA2008100728901A CN101284141A (en) | 2008-06-02 | 2008-06-02 | Microwave continuous heating sterilization process of solid material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549162A (en) * | 2009-05-11 | 2009-10-07 | 新疆大学 | Microwave continuously heating and sterilizing method and special equipment mechanism for solid materiel |
| CN102989020A (en) * | 2012-12-12 | 2013-03-27 | 河南勃达微波设备有限责任公司 | Microwave fluid sterilizing equipment |
| CN103239740A (en) * | 2013-05-16 | 2013-08-14 | 成都科尔医药技术有限公司 | Continuous mixed sterilizing equipment |
| CN104470023A (en) * | 2014-11-24 | 2015-03-25 | 上海工程技术大学 | Microwave heating device allowing automatic feeding and discharging and operating method |
| CN109561715A (en) * | 2016-08-05 | 2019-04-02 | Cj第制糖株式会社 | Including the pretreated processed food method for disinfection of microwave heating |
-
2008
- 2008-06-02 CN CNA2008100728901A patent/CN101284141A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549162A (en) * | 2009-05-11 | 2009-10-07 | 新疆大学 | Microwave continuously heating and sterilizing method and special equipment mechanism for solid materiel |
| CN101549162B (en) * | 2009-05-11 | 2013-06-12 | 新疆大学 | Microwave continuously heating and sterilizing method and special equipment mechanism for solid materiel |
| CN102989020A (en) * | 2012-12-12 | 2013-03-27 | 河南勃达微波设备有限责任公司 | Microwave fluid sterilizing equipment |
| CN103239740A (en) * | 2013-05-16 | 2013-08-14 | 成都科尔医药技术有限公司 | Continuous mixed sterilizing equipment |
| CN103239740B (en) * | 2013-05-16 | 2015-05-20 | 成都科尔医药技术有限公司 | Continuous mixed sterilizing equipment |
| CN104470023A (en) * | 2014-11-24 | 2015-03-25 | 上海工程技术大学 | Microwave heating device allowing automatic feeding and discharging and operating method |
| CN104470023B (en) * | 2014-11-24 | 2017-01-11 | 上海工程技术大学 | Microwave heating device allowing automatic feeding and discharging and operating method |
| CN109561715A (en) * | 2016-08-05 | 2019-04-02 | Cj第制糖株式会社 | Including the pretreated processed food method for disinfection of microwave heating |
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Open date: 20081015 |