WO2008134835A1 - Microwave dryer - Google Patents

Microwave dryer Download PDF

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Publication number
WO2008134835A1
WO2008134835A1 PCT/BR2008/000125 BR2008000125W WO2008134835A1 WO 2008134835 A1 WO2008134835 A1 WO 2008134835A1 BR 2008000125 W BR2008000125 W BR 2008000125W WO 2008134835 A1 WO2008134835 A1 WO 2008134835A1
Authority
WO
WIPO (PCT)
Prior art keywords
dryer
conveyor belt
microwaves
air flow
modules
Prior art date
Application number
PCT/BR2008/000125
Other languages
French (fr)
Inventor
Armando Sergio Marotti Neto
Original Assignee
Silvestro, Edda
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silvestro, Edda filed Critical Silvestro, Edda
Publication of WO2008134835A1 publication Critical patent/WO2008134835A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/009—Alarm systems; Safety sytems, e.g. preventing fire and explosions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection

Definitions

  • This patent of utility aims at the construction of microwaves dryer. It is made of modules standing on a conveyor belt and impelled by an air flow whirling in spiral shapes for drying biomass chips, sawdust, grass, grains and corns, among others. It is composed of different modules working at a different electricity power, varying from 3KW to 12KW each. The modules stand on a conveyor belt.
  • the microwaves dryer also comprises a system which generates a ventilation capable of shaking the product and whirl it round in a revolutionary way, a spiral thanks to a spiral shape, so that all the parts of the wood are dried uniformly and efficiently, without getting carbonized and consequently without emitting the corresponding steam which arises from carbonization.
  • This method grants a major capacity of production per hour if compared with common rotative dryers which are used for burning wood or fuel oil but they produce high temperature thus causing a difficult control of the combustion and a non-uniform product in terms of moisture contents. Besides causing a loss of biomass when it burns, the method also causes pollution because of the gas and steam emitted during carbonization.
  • This microwaves drying process is quite different from the combustion process since the material containing moisture crosses the tunnel of the resounding cavity and causes an absorption of the generated micro waves, forming a bipolar effect in which water and organic material start to interact and exchange electrons intensively under a frequency of 2,450,000 Hz oscillations which cause an immediate heating of water in each particles of the biomass and draws out the inner moisture transformed into steam and potentializes the chips because part of the resin of the wood is poured out and stands on the outer pores of the wood, so as to impermeabilize it and prevent it from reabsorbing moisture from the air.
  • This condensation system is very important because in addition to avoid pollution it also recuperates the inner substances of the material which are re-utilized for organic manures and fertilizers. These inner substances can only be drawn out safely through a microwaves system.
  • this dryer is practical under the logistic point of view because it is not heavy, it is made of light metal plates and it can be easily removed thanks to its small wheels under the dryer.
  • the modules are assembled on a conveyor belt and the drying process is continuous, forming a tunnel of micro radiation which varies its electric power from 3 to 12 KW per module. With the assemblage of 15 modules wasting 180KW or more, the dryer attains a capacity production of up to 25 tons per hour and it makes it possible to control the desired moisture of wood-chips at a very low cost of electricity.
  • the microwaves benefits are not at all attained by a common furnace which is very big and heavy and it needs to be conveyed by special trucks. Its production capacity is much lower in terms of tons per hour.
  • the present system has also the advantage of having a sensorial system which controls the moisture of the product from its entrance into the dryer so as to obtain the required dryness.
  • a sensorial system which controls the moisture of the product from its entrance into the dryer so as to obtain the required dryness.
  • the power and the velocity of the conveyor belt is regulated for obtaining the required moisture without carbonizing the product or without exceeding the point of dryness.
  • the dryer has also a mechanism which affords the movement of the wood or other products into the dryer towards various directions so that the chips are dried equally on every single side by the electromagnetic waves, consequently undergoing a complete and totally uniform drying process.
  • Figure 1 illustrates a top view of the dryer
  • Figure 2 illustrates a lateral view of the dryer
  • Figure 3 illustrates a lateral view, in traverse section of the dryer
  • FIG 4 shows a frontal view
  • Figure 5 shows a view of the dryer in longitudinal section.
  • this microwaves dryer consists in a structure (1) built with special metal plates painted with epoxy and a protecting material to reflect the microwaves radiation into the resounding cavity (2), forming a coat (3) into which is set a conveyor belt (4) with a velocity reducer commanding e the chains of the conveyor belt.
  • the material to be dried is carried by the conveyor belt 4) and its moisture is checked by a sensorial system (11) which is placed at the entrance of the dryer and its information is transferred to a computer which performs the data processing for controlling the velocity of said conveyor (4) as also the power intensity of each module, in order to obtain the expected moisture content previously scheduled in the system.
  • the microwaves dryer (1) is constructed with a special system of dissipators for an endless work relating to frequency generation, which is independent and affords to do repairs without stopping the dryer.
  • the safety system of this dryer comprises combustion sensors
  • Another safety characteristic is the blockage of radiation escape thanks to the use of metal plates painted with a special epoxy and on the accessing places of the biomass is set up pipes with circulating water which captures electromagnetic waves so as to impede the escape of electromagnetic waves either in the entrance and in the exit of the dryer.
  • the dryer comprises an instrument panel which activates each single generator system of electromagnetic frequency with an independent sensor for showing the inner temperature, the tension, the charging current, the dissipators and coolers for forcing the air.
  • This instrument panel manages several modules at the same time, according to the necessity of the product to be dried.
  • All the system is operated through a computer which makes the operational control of the process, always based on information of the sensors installed all along the dryer and it commands the drying process, the velocity and the emission of electromagnetic radiations of each module, also adjusting the overall system automatically for a better yield for optimizing the production capacity and to attain the lowest cost of electricity.
  • this dryer may be built with various dimensions, materials, parts and additional technical specifications, provided that they stick to the main objectives of our claims.
  • drying process that we are intending to patent is a new solution to any existing drying process and it fits the specific technical purposes of drying without carbonizing; drying to raise biomass calorific power; drying with efficiency just drawing out the necessary resins for impermeabilizing the biomass; drying at low cost for using microwaves system for the dehydration of wood, sawdust, grass, grains, cereals, among others, destinated to the production of briquettes, pellets and wood-chips meant for the generation of electricity into power plants where pollutant fuel has to be replaced by highly calorific biomass.
  • this innovating dryer is unique and must be registered as the first invention in this field to be protected from imitations and plagiarism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A dryer is proposed for drying biomass like wood, sawdust, grass, grains, corns, etc. for energetic use to replace polluting fuels like oil and others. The modular dryer contains microwave-generators (5), which can be controlled independently from each other, a conveyor belt (4), an air flow whirling in spirals, an inner wall with spiral blade (7), wave guides (6), sucking ducts (9) causing negative pressure, an exhaustion system (10), and a condenser. The modules are built of reflecting plates painted with epoxy containing a protecting substance.

Description

Microwave dryer
This patent of utility aims at the construction of microwaves dryer. It is made of modules standing on a conveyor belt and impelled by an air flow whirling in spiral shapes for drying biomass chips, sawdust, grass, grains and corns, among others. It is composed of different modules working at a different electricity power, varying from 3KW to 12KW each. The modules stand on a conveyor belt.
The microwaves dryer also comprises a system which generates a ventilation capable of shaking the product and whirl it round in a revolutionary way, a spiral thanks to a spiral shape, so that all the parts of the wood are dried uniformly and efficiently, without getting carbonized and consequently without emitting the corresponding steam which arises from carbonization. This method grants a major capacity of production per hour if compared with common rotative dryers which are used for burning wood or fuel oil but they produce high temperature thus causing a difficult control of the combustion and a non-uniform product in terms of moisture contents. Besides causing a loss of biomass when it burns, the method also causes pollution because of the gas and steam emitted during carbonization.
This microwaves drying process is quite different from the combustion process since the material containing moisture crosses the tunnel of the resounding cavity and causes an absorption of the generated micro waves, forming a bipolar effect in which water and organic material start to interact and exchange electrons intensively under a frequency of 2,450,000 Hz oscillations which cause an immediate heating of water in each particles of the biomass and draws out the inner moisture transformed into steam and potentializes the chips because part of the resin of the wood is poured out and stands on the outer pores of the wood, so as to impermeabilize it and prevent it from reabsorbing moisture from the air.
This does not occur with common dryers which work uselessly for hours and days, wasting high quantities of electricity and at the end, even if the biomass comes out with only 8% of moisture, after a few days it raises up again to 25% because the temperature it had to undergo into the dryer attained 8000C and expanded the inner pores of the wood causing a higher capacity of moisture absorption when it is taken out of the dryer. The steams of this process are sucked by a system of ducts working through an exhaustion system which condenses volatilized oils and resin.
This condensation system is very important because in addition to avoid pollution it also recuperates the inner substances of the material which are re-utilized for organic manures and fertilizers. These inner substances can only be drawn out safely through a microwaves system.
Another characteristic of this dryer is that it is practical under the logistic point of view because it is not heavy, it is made of light metal plates and it can be easily removed thanks to its small wheels under the dryer. The modules are assembled on a conveyor belt and the drying process is continuous, forming a tunnel of micro radiation which varies its electric power from 3 to 12 KW per module. With the assemblage of 15 modules wasting 180KW or more, the dryer attains a capacity production of up to 25 tons per hour and it makes it possible to control the desired moisture of wood-chips at a very low cost of electricity. The microwaves benefits are not at all attained by a common furnace which is very big and heavy and it needs to be conveyed by special trucks. Its production capacity is much lower in terms of tons per hour.
The present system has also the advantage of having a sensorial system which controls the moisture of the product from its entrance into the dryer so as to obtain the required dryness. By means of infra-red system and data processing, the power and the velocity of the conveyor belt is regulated for obtaining the required moisture without carbonizing the product or without exceeding the point of dryness.
Among so many advantages, the dryer has also a mechanism which affords the movement of the wood or other products into the dryer towards various directions so that the chips are dried equally on every single side by the electromagnetic waves, consequently undergoing a complete and totally uniform drying process.
Aiming at a better understanding of this invention we annex a few drawings which demonstrate the format of the dryer's modules for which is required a patent:
Figure 1 illustrates a top view of the dryer; Figure 2 illustrates a lateral view of the dryer;
Figure 3 illustrates a lateral view, in traverse section of the dryer;
Figure 4 shows a frontal view; and, Figure 5 shows a view of the dryer in longitudinal section. According the abovementioned illustrations, this microwaves dryer consists in a structure (1) built with special metal plates painted with epoxy and a protecting material to reflect the microwaves radiation into the resounding cavity (2), forming a coat (3) into which is set a conveyor belt (4) with a velocity reducer commanding e the chains of the conveyor belt.
On the upper side of the structure is located a frequency generator with 2,45 giga hertz (5) with six or more generators installed with independent commands and waves guides (6) directed towards the resounding cavity (2) formed by the inner wall made of special metal, together with the spiral roller (7) and a duct for air flow entrance (8) produced by the blowing turbo, and in the upper part occurs the exit of steams generated in the process through the sucking duct (9) causing a negative pressure into the duct and driving all the steam to the condenser so that this negative pression is generated by the exhaustion system (10) after the steam condensation of the evaporated oil and resin, in order to recuperate them by cooling and washing them in the tower and then drawn to the tank through a duct where the oily substances are drawn out by floatation.
The material to be dried is carried by the conveyor belt 4) and its moisture is checked by a sensorial system (11) which is placed at the entrance of the dryer and its information is transferred to a computer which performs the data processing for controlling the velocity of said conveyor (4) as also the power intensity of each module, in order to obtain the expected moisture content previously scheduled in the system. The microwaves dryer (1) is constructed with a special system of dissipators for an endless work relating to frequency generation, which is independent and affords to do repairs without stopping the dryer. The safety system of this dryer comprises combustion sensors
(12) so that if the material gets burned they stop automatically the emission of microwaves into the resounding camera and they release carbonic gas for the extinction of fire. This is one more peculiarity which makes the dryer unique since none of the furnaces existing in the market offer this solution because of their format and their high temperature.
Another safety characteristic is the blockage of radiation escape thanks to the use of metal plates painted with a special epoxy and on the accessing places of the biomass is set up pipes with circulating water which captures electromagnetic waves so as to impede the escape of electromagnetic waves either in the entrance and in the exit of the dryer.
The dryer comprises an instrument panel which activates each single generator system of electromagnetic frequency with an independent sensor for showing the inner temperature, the tension, the charging current, the dissipators and coolers for forcing the air. This instrument panel manages several modules at the same time, according to the necessity of the product to be dried.
All the system is operated through a computer which makes the operational control of the process, always based on information of the sensors installed all along the dryer and it commands the drying process, the velocity and the emission of electromagnetic radiations of each module, also adjusting the overall system automatically for a better yield for optimizing the production capacity and to attain the lowest cost of electricity.
All these peculiar characteristics make the drying process a pioneer and modern Invention of up most importance in the industrial production of dry briquettes and pellets destinated to electricity and thermal generation by power plants which have to replace oil combustion with energetic biomass.
It is to be enhanced that this dryer may be built with various dimensions, materials, parts and additional technical specifications, provided that they stick to the main objectives of our claims.
So the kind of drying process that we are intending to patent is a new solution to any existing drying process and it fits the specific technical purposes of drying without carbonizing; drying to raise biomass calorific power; drying with efficiency just drawing out the necessary resins for impermeabilizing the biomass; drying at low cost for using microwaves system for the dehydration of wood, sawdust, grass, grains, cereals, among others, destinated to the production of briquettes, pellets and wood-chips meant for the generation of electricity into power plants where pollutant fuel has to be replaced by highly calorific biomass.
For all the reasons set out above, this innovating dryer is unique and must be registered as the first invention in this field to be protected from imitations and plagiarism.

Claims

CLAINS
1. MICROWAVES DRYER MADE BY MODULES STANDING ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW WHIRLING IN SPIRALS SHAPES, characterized by the dryer consists of modules (1) built in special metal plates painted with epoxy which contains a protecting substance which enables the electromagnetic radiation to reflect into the resounding cavity (2) thus forming a coated space in which a conveyor belt is inserted (4) It has a velocity reducer commanding the chains of the conveyor belt and on the upper part of the structure is located a system of frequency generation yielding 2,45 gigahertz (5) with six or more generators fitted with independent commands and waves guides (6) directed towards the resounding cavity (2) formed by the inner wall made in special metal together with the spiral blade (7) and the entrance duct of air flow (8), produced by the blowing turbo while in the upper part occurs the emission of steams generated during the process which come out through sucking ducts (9) causing a negative pression in the inside of the duct which drives all the steam up to the condenser so as that this negative pression is generated by the exhaustion system (10) installed after the steam condenser for drawing out oil and resin volatilized during the process and recuperated by cooling and washing process into the tower and the liquid are driven to the tank through the extracts duct where the oily substances are drawn out by floatation.
2. MICROWAVES DRYER MADE BY MODULES STANDING
ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW WHIRLING IN SPIRAL SHAPES, in according to the claim 1, the dryer is characterized by the fact that the material to be dried is conveyed by a conveyor belt (4) and its moisture content is checked by a sensorial system (11) inserted into the dryer's entrance and its information are transferred to a computer that carries out the data processing controlling the conveyor belt velocity (4) as also the power intensity of each module so as to obtain the scheduled moisture, and the microwaves dryer (1) is built with special dissipators meant for endless work in frequency generation.
3. MICROWAVES DRYER MADE BY MODULES STANDING ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW WHIRLING IN SPIRAL SHAPES, in according to the claims 1 and 2, characterized by the peculiarity of the dryer lies in the safety system which comprises combustion sensors (12) that in case of intense heat paralyze automatically the emission of microwaves frequency in the inner part of the resounding cavity and release carbonic gas for extinguishing any fire.
4. MICROWAVES DRYER MADE BY MODULES STANDING ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW WHIRLING IN SPIRALS SHAPES, in according to the claims 1 to 3, characterized by the dryer's peculiarity lies on the presence of a safety device preventing the leakage of microwaves radiation and it consists of the outfit of pipes with running water settled at the entrance and at the exit of the dryer for capturing electromagnetic radiation so that no ray escapes from the dryer access vias.
5. MICROWAVES DRYER MADE BY MODULES STANDING ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW
WHIRLING IN SPIRALS SHAPES, characterized by this dryer has a special instrument panel which activates, through relays, each independent system generating electromagnetic radiation and it is fit with a sensorial device which shows the working temperature, tension, electric current and the and the dissipator and coolers system forcing the air, this panel commands all the modules at the same time even if there are many of them, according to the quantity of product to be dried; all this system is operated by a computer which manages, commands and controls all the parts and all the operational phases of the process.
6. MICROWAVES DRYER MADE BY MODULES STANDING ON A CONVEYOR BELT AND IMPELLED BY AN AIR FLOW WHIRLING IN SPIRALS SHAPES, characterized bv this dryer will use a mechanism which enables wood-chips, or any other biomass product into the dryer, to shake and turn around in different directions so as to dry each single side equally thanks to the fact that the overall product is attained by electromagnetic radiation; as a result of this mechanism, the biomass undergoes a which is fully uniform.
PCT/BR2008/000125 2007-05-04 2008-05-02 Microwave dryer WO2008134835A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRMU-8700836-0 2007-05-04
BRMU8700836-0U BRMU8700836U (en) 2007-05-04 2007-05-04 air-flow spiral swirling modular microwave dryer on conveyor belt

Publications (1)

Publication Number Publication Date
WO2008134835A1 true WO2008134835A1 (en) 2008-11-13

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PCT/BR2008/000125 WO2008134835A1 (en) 2007-05-04 2008-05-02 Microwave dryer

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BR (1) BRMU8700836U (en)
WO (1) WO2008134835A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033285A1 (en) * 2007-09-13 2009-03-19 Enwave Corporation Apparatus and method for dehydrating biological materials
WO2010028488A1 (en) * 2008-09-12 2010-03-18 Enwave Corporation Apparatus and method for dehydrating biological materials with freezing and microwaving
CN101858687A (en) * 2010-05-26 2010-10-13 合肥市顺昌不锈钢设备制造有限公司 Electromagnetic drying heating equipment
WO2012101518A1 (en) 2011-01-25 2012-08-02 Giuliano Grassi Apparatus and process for torrefaction of ligno-cellulosic biomasses and mixtures with liquids
AT12590U1 (en) * 2010-01-25 2012-08-15 Helmholtz Zentrum Umweltforsch DEVICE FOR DRYING AND DECONTAMINATING WALL, CONCRETE, WOOD AND OTHER SOLIDS
CN102889771A (en) * 2012-10-24 2013-01-23 无锡市通和工机有限公司 Microwave dryer
CN103075872A (en) * 2013-02-27 2013-05-01 岳阳钟鼎热工电磁科技有限公司 Microwave hot-air dehydrating and drying equipment for agricultural and sideline products
CN105180616A (en) * 2015-10-27 2015-12-23 中国科学院上海高等研究院 Continuous type efficient grain microwave drying machine and structure optimizing method thereof
CN106016986A (en) * 2016-05-06 2016-10-12 电子科技大学 Lignite drying upgrading line with metal reflection plates
US9883693B1 (en) 2016-07-26 2018-02-06 Donald Cradic Moisture removal system
CN109046897A (en) * 2018-09-28 2018-12-21 庄婉卿 A kind of wood paints blowing-dry apparatus with wind-force microwave
CN111336771A (en) * 2020-03-03 2020-06-26 济宁学院 Grain drying device and method
CN115574589A (en) * 2022-11-08 2023-01-06 青州市博奥炭黑有限责任公司 Anti-corrosion device of carbon black drying machine

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CN114850008B (en) * 2022-06-08 2023-01-10 浙江嘉柯新材料科技有限公司 Microwave drying device and process for synthetic leather waterborne polyurethane coating

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US4622446A (en) * 1982-12-09 1986-11-11 House Food Industrial Company Ltd. Microwave drying apparatus and use thereof
US5135122A (en) * 1989-01-03 1992-08-04 The J. M. Smucker Company Method and apparatus for dehydrating fruit
JP2002046108A (en) * 2000-08-01 2002-02-12 Nagai Kikai Seisakusho:Kk Dryer for wood
US20040187340A1 (en) * 2003-01-21 2004-09-30 Farid Chemat Solvent-free microwave extraction of volatile natural substances
GB2425164A (en) * 2005-03-14 2006-10-18 S M C Srl Modular continuous evaporator drier apparatus with separate microwave heating and air flow chambers

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Publication number Priority date Publication date Assignee Title
US4027400A (en) * 1975-01-06 1977-06-07 Swift And Company Limited Fluid removal in food processing, method and apparatus
US4622446A (en) * 1982-12-09 1986-11-11 House Food Industrial Company Ltd. Microwave drying apparatus and use thereof
US5135122A (en) * 1989-01-03 1992-08-04 The J. M. Smucker Company Method and apparatus for dehydrating fruit
JP2002046108A (en) * 2000-08-01 2002-02-12 Nagai Kikai Seisakusho:Kk Dryer for wood
US20040187340A1 (en) * 2003-01-21 2004-09-30 Farid Chemat Solvent-free microwave extraction of volatile natural substances
GB2425164A (en) * 2005-03-14 2006-10-18 S M C Srl Modular continuous evaporator drier apparatus with separate microwave heating and air flow chambers

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033285A1 (en) * 2007-09-13 2009-03-19 Enwave Corporation Apparatus and method for dehydrating biological materials
US8718113B2 (en) 2007-09-13 2014-05-06 Enwave Corporation Apparatus and method for dehydrating biological materials
WO2010028488A1 (en) * 2008-09-12 2010-03-18 Enwave Corporation Apparatus and method for dehydrating biological materials with freezing and microwaving
US10023857B2 (en) 2008-09-12 2018-07-17 En Wave Corporation Apparatus and method for dehydrating biological materials with freezing and microwaving
US10844366B2 (en) 2008-09-12 2020-11-24 Enwave Corporation Apparatus and method for dehydrating biological materials with freezing and microwaving
AT12590U1 (en) * 2010-01-25 2012-08-15 Helmholtz Zentrum Umweltforsch DEVICE FOR DRYING AND DECONTAMINATING WALL, CONCRETE, WOOD AND OTHER SOLIDS
CN101858687A (en) * 2010-05-26 2010-10-13 合肥市顺昌不锈钢设备制造有限公司 Electromagnetic drying heating equipment
WO2012101518A1 (en) 2011-01-25 2012-08-02 Giuliano Grassi Apparatus and process for torrefaction of ligno-cellulosic biomasses and mixtures with liquids
CN102889771A (en) * 2012-10-24 2013-01-23 无锡市通和工机有限公司 Microwave dryer
CN103075872A (en) * 2013-02-27 2013-05-01 岳阳钟鼎热工电磁科技有限公司 Microwave hot-air dehydrating and drying equipment for agricultural and sideline products
CN103075872B (en) * 2013-02-27 2014-09-03 岳阳钟鼎热工电磁科技有限公司 Microwave hot-air dehydrating and drying equipment for agricultural and sideline products
CN105180616A (en) * 2015-10-27 2015-12-23 中国科学院上海高等研究院 Continuous type efficient grain microwave drying machine and structure optimizing method thereof
CN105180616B (en) * 2015-10-27 2018-01-30 中国科学院上海高等研究院 A kind of continuous efficient grain microwave drying machine and its structural optimization method
CN106016986A (en) * 2016-05-06 2016-10-12 电子科技大学 Lignite drying upgrading line with metal reflection plates
CN106016986B (en) * 2016-05-06 2021-02-05 电子科技大学 Lignite drying and upgrading line with metal reflecting plate
US9883693B1 (en) 2016-07-26 2018-02-06 Donald Cradic Moisture removal system
CN109046897A (en) * 2018-09-28 2018-12-21 庄婉卿 A kind of wood paints blowing-dry apparatus with wind-force microwave
CN111336771A (en) * 2020-03-03 2020-06-26 济宁学院 Grain drying device and method
CN111336771B (en) * 2020-03-03 2021-08-03 济宁学院 Grain drying device and method
CN115574589A (en) * 2022-11-08 2023-01-06 青州市博奥炭黑有限责任公司 Anti-corrosion device of carbon black drying machine
CN115574589B (en) * 2022-11-08 2023-09-26 青州市博奥炭黑有限责任公司 Corrosion prevention device of carbon black dryer

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