WO2015156679A1 - Procédé et réacteur améliorés destinés à sécher un mélange contenant des solides ou semi-solides - Google Patents

Procédé et réacteur améliorés destinés à sécher un mélange contenant des solides ou semi-solides Download PDF

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Publication number
WO2015156679A1
WO2015156679A1 PCT/NO2015/050063 NO2015050063W WO2015156679A1 WO 2015156679 A1 WO2015156679 A1 WO 2015156679A1 NO 2015050063 W NO2015050063 W NO 2015050063W WO 2015156679 A1 WO2015156679 A1 WO 2015156679A1
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WO
WIPO (PCT)
Prior art keywords
mixture
reaction chamber
accordance
rotor
bed
Prior art date
Application number
PCT/NO2015/050063
Other languages
English (en)
Inventor
Saeed BIKASS
Stein Kyrre MONSEN
Original Assignee
Thermtech Holding As
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 Thermtech Holding As filed Critical Thermtech Holding As
Publication of WO2015156679A1 publication Critical patent/WO2015156679A1/fr
Priority to NO20161450A priority Critical patent/NO20161450A1/no

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
    • 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
    • F26B3/092—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 agitating the fluidised bed, e.g. by vibrating or pulsating
    • F26B3/0923—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 agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
    • 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
    • F26B3/36—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 mechanical effects, e.g. by friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment

Definitions

  • the present invention relates to a process for drying a mixture containing
  • the invention relates to a reactor.
  • Friction dryers can be used for separation of evaporable liquids from a mixture of compounds, for instance for the separation of oil from a mixture of solid and liquid compounds, or for the drying of water from water containing materials.
  • the friction between the feeding mixture and the impact means generates thermal energy, i.e. heat that evaporates evaporable liquid components in the mixture.
  • the temperature of the fluidized bed often needs to be set to a temperature that does not reduce the quality of the treated material. It is thus an object of the present invention to provide an improved process where the solids are sensitive to high temperatures depending on their properties and application.
  • a first aspect of the present invention relates to a process for drying a mixture comprising temperature sensitive solids or semi-solids and evaporable liquid or liquids in a reactor with a reaction chamber, wherein the process comprises:
  • reaction chamber comprises a rotor with impact means
  • mixture solids selected from the group consisting of rubber, composites, offal, bio wastes, organic products and organics by products.
  • liquid an oil
  • liquid water In a preferred embodiment is the liquid water. In a preferred embodiment is the pressure in the reaction chamber between -0.6 and 0 barg or is between -0.5 and 0 barg.
  • the pressure in the reaction chamber is from -0.6 to -0.5
  • the liquids are water and oil
  • the temperature of the reaction chamber is preferably from 70 to 150 and more preferably from 75 to 95 °C
  • the temperature of the reaction chamber from 90 to 95 °C.
  • solid particles introduced into the reaction chamber to increase the friction and/or heat transfer between the rotor and the mixture bed, and between said solid particles and solid particles in the mixture bed.
  • solid particles sand, glass or metal pieces In a preferred embodiment are the solid particles sand, glass or metal pieces. In a preferred embodiment is a portion of said solid particles a constituent of the feed mixture.
  • the feeding mixture preheated is the feeding mixture preheated.
  • said impact means extensions on the rotor such as discs, propellers, arms or blades.
  • connection between the rotor and the impact means fixed, hinged, removable or adjustable.
  • a second aspect of the present invention relates to a reactor for processing of a mixture comprising temperature sensitive solids or semi-solids and evaporable liquid or liquids, wherein the reactor comprises;
  • a reaction chamber with one or more fed inlets for said mixture, and one or more vapor outlets for evaporable reaction products of said liquid or liquids
  • a rotor within the reaction chamber, wherein the rotor rotates and establishes a mixture bed, and wherein the rotor is equipped with one or more impact means which is in contact with the mixture bed, and wherein the friction between the impact means and the mixture bed transfers thermal energy to the mixture bed
  • a pressure lowering means adapted to establish reduced pressure, preferable vacuum inside the reaction chamber, wherein the pressure of the reaction chamber is between -0.95 barg and -0.01 barg
  • the impact means in the form of discs, propellers, arms or blades, or a combination thereof.
  • connection between the rotor and the impact means fixed, hinged, removable or adjustable.
  • the inventors of the present invention have shown that it is possible to preserve the quality of solids (for example, fish wastes) by reducing the process pressure in a drying mill. It is an advantage to easily degasify the feed by creating vacuum environment. At the same time the drying process can get benefit from centrifugal forces.
  • the present invention provides a process and an apparatus which are capable of drying a mixture containing solids, liquids and gasses in any ratio.
  • examples of such compounds can be rubber, composites, offal, bio wastes, organic products and organics by products.
  • the concept is to establish an efficient condition in the reaction chamber so that low temperature evaporating takes place, in order to dry the solids in the above mentioned mixture.
  • the process may be enhanced by additives such as catalysts, chemicals, solids and liquids prior to or during the process.
  • the process occurs in one or more chamber(s) which may be in parallel or series.
  • the mixture (hereinafter referred to as the "feed” or “feed material” or “feed mixture”) enters into the chamber(s) by a feed pump enhanced by sucking created by vacuum. Then a portion of liquids is separated by centrifugal forces and discharged from the chamber.
  • the next step is degasifying the feed by the vacuum.
  • the degasified gas is mainly air which may affect negatively on the dried solids at higher temperatures.
  • the feed is heated then to a desired temperature. It may be preheated as well.
  • the process occurs under a vacuum condition.
  • the required vacuum pressure depends on the desired result.
  • the pressure can be between 0.05 barg and 0.99 barg.
  • the preheating temperature, the heating rate, the process temperature and any other parameters depend on the desired result and can be determined by a skilled person.
  • the chamber(s) has/have at least a rotor and/or a shaft (impact means) that may, for example have discs, propellers, arms, blades with any connection in between; fixed, hinged, removable or adjustable.
  • a portion of the liquid in the feed is extracted by the centrifugal force created by the rotor.
  • the vacuum is degassing the feed that makes the final dried solids quality higher.
  • the feed mixture is heated by friction generated by the rotor/shaft.
  • the rotation may make a fluidized bed with large surface for efficient transfer of the thermal energy. Heating may be supplied from other sources in order to maintain the process temperature or any other reason.
  • the rotor/shaft or the chamber may be heated by other sources and/or the feed can be preheated.
  • the friction between the feed mixture in the fluidized bed and the impact means may be enhanced by adding solids such as sand, glass or metal pieces to the feed prior to or inside the chamber(s).
  • the solids may remain in the chamber(s) or may exit the chamber. The retention time depends on process conditions, composition of the solids and desired result.
  • the apparatus has one or more inlet(s) and outlet(s) to feed in feed mixture and transport out all the phases (solids, liquids and gasses/vapour).
  • This process/apparatus may be used independently, in connection with, or as an integrated part of another process(es)/apparatus(es) onshore or offshore.
  • FIG. 1 is a schematic drawing of a reactor 10 with a reaction chamber 12 with inlets 22 for feeding a feed material, and an outlet 24 for evaporated material and an outlet
  • the reaction chamber also contains an liquid outlet
  • the reactor 10 contains a rotor 14 within the reaction chamber 12, and the rotor is equipped with a plural of impact means 16.
  • These impact means 16 can be discs, propellers, arms and blades, and can be, with regard to the rotating rotor, fixed, hinged, removable or adjustable.
  • Rotation of the rotor 14 will effect contact between the feed material and the impact means, and the rotation and the friction established will create a fluidized bed 18.
  • the temperature in the fluidized bed 18 will increase and evaporable liquids will evaporate.
  • the reaction chamber 12 of the reactor according to the invention has one or more means 25 for regulating the pressure of the reaction chamber 12.
  • the reactor 10 is thus capable of conducting a process according to the invention, i.e. a process where the reaction (separation or removal of oil or liquids) takes place at a reduced temperature at reduced pressure.
  • reduced temperature means that the temperature of the process can be lower than the normal temperature at atmospheric pressure.
  • Experimental section The aim of this study was to find out whether the reaction temperature could be decreased sufficiently during drying of a fish waste product to produce a dried fish meal.
  • the prior art teaches that the process temperature should be 10-20 degrees centigrade higher than the boiling temperature of the liquid to evaporate from the waste in order to dry the solids efficiently.
  • a friction dryer converts kinetic energy to thermal energy by creating friction in the waste.
  • a drive unit sets a series of shaft mounted hammer arms (impact means) in motion inside a cylinder shaped process chamber (also referred to as the hammer mill or just the mill).
  • the waste material was forced towards the inner wall of the process chamber where the kinetic energy from the rotating arms will be transformed to heat by friction. Liquids in the waste material evaporate and leave the chamber, and new waste is pumped in.
  • Solids are discharged through an output.
  • the hottest spot in the process is the waste itself, and the liquid is under influence of the process temperature for maximum a few seconds.
  • a representative example of such a friction dryer is the TCC ® from
  • test samples used in this example are various waste products from the fish farming industry, i.e. fish waste products.
  • the main object of the experiments is to provide an efficient drying, i.e. removal of water as the liquid component.
  • barg is defined as a unit of gauge pressure, i.e. pressure in bars above ambient or atmospheric pressure.
  • Example 1 Evaporation of water from fish waste products
  • the waste material is ground in a mill with a mesh diameter of 8 mm, and is pumped to the reaction chamber of a friction dryer.
  • the rotor with the hammer arms (impact means) is rotated and a bed of waste material is formed on the inner wall of the reaction chamber.
  • the temperature of the bed increases due to the transfer of kinetic energy to thermal energy in the waste bed, and water in the added waste material will rapidly evaporate in contact with the heated waste bed.
  • the various fish waste test samples were tested at different temperatures in the reaction chamber, and at different pressures, especially at normal atmospheric pressure and at various levels of reduced pressure (vacuum) as indicated in the tables below.

Landscapes

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

Abstract

Réacteur et procédé destinés à sécher un mélange comprenant des solides ou semi-solides thermosensibles et un ou des liquides évaporables dans un réacteur (10) doté d'une chambre de réaction (12), le procédé comprenant les étapes consistant à : a) introduire ledit mélange dans la chambre de réaction (12), laquelle comprend un rotor (14) doté d'un moyen d'impact (16); b) faire tourner le rotor (14) à l'intérieur de la chambre de réaction (12) afin de former un lit de mélange d'alimentation (18); c) extraire une partie du liquide par la force centrifuge afin de diminuer l'énergie thermique nécessaire à la dessiccation du mélange; d) dégazer le mélange introduit par le vide; e) provoquer un frottement entre le lit de mélange (18) et le moyen d'impact (16) par mise en contact du moyen d'impact (16) du rotor (14) en rotation avec le lit de mélange (18), le lit de mélange (18) étant chauffé par l'énergie thermique créée par le frottement entre le moyen d'impact (16) et le lit de mélange (18); et d) la pression de la chambre de réaction (12) étant comprise entre -0,95 barg et -0,01 barg (c.-à-d. le vide).
PCT/NO2015/050063 2014-04-08 2015-04-08 Procédé et réacteur améliorés destinés à sécher un mélange contenant des solides ou semi-solides WO2015156679A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO20161450A NO20161450A1 (en) 2014-04-08 2016-09-13 Improved process and reactor for drying a mixture containing solid or semi-solids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20140456 2014-04-08
NO20140456 2014-04-08

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WO2015156679A1 true WO2015156679A1 (fr) 2015-10-15

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WO (1) WO2015156679A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO341450B1 (en) * 2015-04-08 2017-11-13 Thermtech Holding As Improved process and reactor for drying a mixture containing solid or semi-solids.
CN110332775A (zh) * 2019-05-13 2019-10-15 江西理工大学 一种橙质基活性炭原料离心脱水设备
US11572471B2 (en) 2017-05-24 2023-02-07 Recover Energy Services Inc. Drill cuttings reuse in roofing materials

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456708A (en) * 1964-12-07 1969-07-22 Atomenergi Ab Drying of powder
GB2165259A (en) * 1984-10-08 1986-04-09 Olav Ellingsen A method of recovering oil from material
WO1998039368A1 (fr) * 1997-03-03 1998-09-11 Ivan Madar Procede de decomposition et/ou depolymerisation thermique et/ou catalytique de substances organiques de faible teneur, et dispositif servant a realiser ledit procede
WO2002092187A1 (fr) * 2001-05-16 2002-11-21 Thermtech As Procede et dispositif permettant de separer du petrole de materiaux renfermant du petrole

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO341450B1 (en) * 2015-04-08 2017-11-13 Thermtech Holding As Improved process and reactor for drying a mixture containing solid or semi-solids.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456708A (en) * 1964-12-07 1969-07-22 Atomenergi Ab Drying of powder
GB2165259A (en) * 1984-10-08 1986-04-09 Olav Ellingsen A method of recovering oil from material
WO1998039368A1 (fr) * 1997-03-03 1998-09-11 Ivan Madar Procede de decomposition et/ou depolymerisation thermique et/ou catalytique de substances organiques de faible teneur, et dispositif servant a realiser ledit procede
WO2002092187A1 (fr) * 2001-05-16 2002-11-21 Thermtech As Procede et dispositif permettant de separer du petrole de materiaux renfermant du petrole

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO341450B1 (en) * 2015-04-08 2017-11-13 Thermtech Holding As Improved process and reactor for drying a mixture containing solid or semi-solids.
US11572471B2 (en) 2017-05-24 2023-02-07 Recover Energy Services Inc. Drill cuttings reuse in roofing materials
CN110332775A (zh) * 2019-05-13 2019-10-15 江西理工大学 一种橙质基活性炭原料离心脱水设备
CN110332775B (zh) * 2019-05-13 2020-10-09 江西理工大学 一种橙质基活性炭原料离心脱水设备

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