EP2596855A1 - Device for mixing energetic raw materials comprising in particular biomass, plant waste materials, coal dust, and optionally binders - Google Patents

Device for mixing energetic raw materials comprising in particular biomass, plant waste materials, coal dust, and optionally binders Download PDF

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Publication number
EP2596855A1
EP2596855A1 EP12007257.4A EP12007257A EP2596855A1 EP 2596855 A1 EP2596855 A1 EP 2596855A1 EP 12007257 A EP12007257 A EP 12007257A EP 2596855 A1 EP2596855 A1 EP 2596855A1
Authority
EP
European Patent Office
Prior art keywords
raw materials
mixing
stirrer
chamber
materials
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP12007257.4A
Other languages
German (de)
English (en)
French (fr)
Inventor
Stanislaw Pargiela
Mariusz Robak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zaklady Urzadzen Kotlowych Staporkow Spolka Akcyjna
Original Assignee
Zaklady Urzadzen Kotlowych Staporkow Spolka Akcyjna
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 Zaklady Urzadzen Kotlowych Staporkow Spolka Akcyjna filed Critical Zaklady Urzadzen Kotlowych Staporkow Spolka Akcyjna
Publication of EP2596855A1 publication Critical patent/EP2596855A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
    • B01F27/706—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with all the shafts in the same receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0727—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by two or more radial rods, e.g. the shaft being interrupted between the rods, or of crankshaft type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/181—Preventing generation of dust or dirt; Sieves; Filters
    • B01F35/187—Preventing generation of dust or dirt; Sieves; Filters using filters in mixers, e.g. during venting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • B01F35/754551—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle using helical screws

Definitions

  • An object of the invention is a device for mixing energy raw materials, comprising in particular biomass, plant waste materials, coal dust, and optionally binders.
  • the invention relates to the field of treatment and processing of fine-grained, often waste, solid fuels, such as plant materials, wood waste and coal or other materials constituting the residue of energy fuels of reduced utility.
  • solid fuel processing e.g. through the production of briquettes, pellets or granulates, optionally fillers and binders are also used.
  • the said materials before being subjected to the substantial step of pressing and forming into briquettes or pellets, have to be closely connected to each other and to exhibit homogeneity.
  • the invention relates to a device providing the initial stage of homogenization of raw materials, which are subsequently subjected to formation into various types of shapes. This further step of the process and devices used for this purpose are known to those skilled in the art and can be used in combination with the mixing device described below.
  • the object of the invention is the device for mixing fragmented energy raw materials, in particular biomass and/or plant waste materials and/or coal, optionally with addition of fillers and/or binders, comprising a mixing chamber provided with at least two rotating stirrers, comprising sweeping paddles, having axes parallel to each other and horizontal in relation to the base, the stirrers being connected to a drive propelling them into a rotational movement in the same direction.
  • the chamber is provided with a dust filter, preferably from fabric, at least partially isolating the chamber area from the environment.
  • the stirrer taking up the raw materials from the side of the raw material supplying channel has its diameter larger than the diameter of the stirrer carrying off the homogenized mixture to the receiving channel.
  • Figure 1 schematically shows a cross-sectional view of the device
  • Figure 2 shows a general view of the device
  • Figure 3 shows a top view
  • Figure 4 shows in detail an exemplary rotating stirrer with sweeping paddles.
  • Figure 3 the axis from the longitudinal section, which was shown in Figure 1 , is marked.
  • the device according to the invention is primarily designed for mixing chopped straw or other plant waste, wood shavings and pomaces, etc., and biomass with coal dust, as the initial step before briquetting or pelletising these raw materials.
  • the purpose of the device according to the invention is to homogenize the raw materials, optionally to additionally fragment them and to average the humidity of the raw materials intended, in the next step, for granulation.
  • the physical properties of the raw materials used unified and stratification phenomenon of raw materials of different origins is reduced.
  • Humidity averaging is necessary because, e.g. the biomass, used in the device, may exhibit high humidity, and other raw materials, e.g. coal dust may be dry.
  • Humidity equalization of the mixture provides, in the further step, an effective formation of homogeneous shapes. Their homogeneity increases their durability (susceptibility to crushing and dusting).
  • the device according to the invention comprises the mixing chamber 1, in which preferably two stirrers 2 with axes 4 that are mutually parallel and horizontal in relation to the base are mounted.
  • the chamber is provided with the supplying channel 6 and the receiving channel 7.
  • Each stirrer 2 is provided with the sweeping paddles 3.
  • the device can be provided with two or more stirrers arranged in series, one after another. The stirrers, during operation, perform consistent rotational movement in the same direction. This is also the direction of moving the raw materials from the tank towards the outlet (the receiving channel) discharging the homogeneous mixture of the raw materials.
  • each stirrer 2 comprises three stirring paddles 3 arranged symmetrically, i.e. every 120 degrees around the axle 4.
  • the stirrer with two to four paddles can be used.
  • the paddles 3 of the stirrer 2 provide, in addition to mixing, movement of the raw material towards the discharge (the reception). Diameter of the stirrer should be such as to provide effective movement of the raw materials in the mixing chamber, i.e. should reach (with some clearance) the chamber bottom 9, so that there was no deposition of the unmixed raw materials.
  • Diameter d 2 of the stirrer 2 located in the chamber 1 from the side of the supplying channel 6 is larger than diameter d 1 of the stirrer located from the side of the receiving channel 7.
  • a feeding screw 8 supplying the homogeneous mixture of the raw materials is mounted in the mixing chamber before the receiving channel 7, before the receiving channel 7, a feeding screw 8 supplying the homogeneous mixture of the raw materials, is mounted in the mixing chamber.
  • the mixing chamber is provided with a dust filter 5 mounted on the edges of the lateral chamber walls (it covers the chamber).
  • the device shown in the drawing is provided with the supplying channel located below the receiving channel, but position of these channels is arbitrary, and it is also desirable to have such an arrangement that the raw material supply is below the level of reception of the homogeneous mixture.
  • the dust filter depicted in Figure 2 covers only a part of the mixing chamber, but with pneumatic raw material feeding, it is preferable that the entire chamber is covered with a cover with dust filter. On the other hand, with mechanical raw material feeding, the filter is not necessary, or only a part of the chamber will be provided with filter.
  • diameters of the stirrers which can vary in size, but can also have the same size, are shown.
  • the consistent operational direction of the stirrers is shown with arrows S.
  • the stirrers are driven e.g. via a chain drive.
  • the stirrer with larger diameter and larger paddles sweeps the material, which is not yet mixed, directly from the tank.
  • the smaller stirrer sweeps the mixture into the receiving channel.
  • the discharge (carrying off to the further treatment) of the raw material of an averaged humidity is realized by means of the feeding screws.
  • the device can be provided with one discharge outlet or more, e.g. two.
  • the device can supply one granulator or two granulators operating in parallel, which increases the performance of the whole process.
  • Supplying the mixer with the raw material is arbitrary, and may be realized by means of mechanical conveyors or by pneumatic transportation.
  • the device can be connected to a few tanks supplying various types of raw materials, or to one tank, to which various types of raw materials are supplied periodically.
  • the process can be carried out continuously or in batches.
  • the mixing chamber has preferably such a volume that it also serves as a buffer vessel and ensures e.g. at least two-hour operation of the granulators forming, in the further step, the homogeneous mixture obtained in the device according to the invention.
  • the device can be supplied with a raw material causing strong dusting, such as straw, coal dust, therefore, it is further provided with dust filter, preferably from fabric, which prevents from dusting both the environment, i.e. the production hall, and other devices connected to the mixer.
  • the filter is made from an air-permeable fabric so that it allows equalizing the pressure in the chamber when the device is operating.
  • the fabric filter does not allow for overpressure caused by the raw material feeding.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
EP12007257.4A 2011-10-26 2012-10-22 Device for mixing energetic raw materials comprising in particular biomass, plant waste materials, coal dust, and optionally binders Withdrawn EP2596855A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL396786A PL396786A1 (pl) 2011-10-26 2011-10-26 Urzadzenie do mieszania surowców energetycznych, obejmujacych zwlaszcza biomase, odpadowe materialy roslinne, pyl weglowy oraz ewentualnie lepiszcza

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PL39678611 Previously-Filed-Application 2011-10-20

Publications (1)

Publication Number Publication Date
EP2596855A1 true EP2596855A1 (en) 2013-05-29

Family

ID=47358518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12007257.4A Withdrawn EP2596855A1 (en) 2011-10-26 2012-10-22 Device for mixing energetic raw materials comprising in particular biomass, plant waste materials, coal dust, and optionally binders

Country Status (2)

Country Link
EP (1) EP2596855A1 (pl)
PL (1) PL396786A1 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108854663A (zh) * 2018-07-03 2018-11-23 安徽万纳包装科技股份有限公司 一种印刷uv油墨的恒温搅拌装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1381877A (en) * 1971-10-21 1975-01-29 Waters C N Fertilizers
GB2035822A (en) * 1978-12-02 1980-06-25 Walley C Mixing bulk materials
US4506990A (en) * 1984-03-30 1985-03-26 Stirco Inc. Mixer for fluent and nonfluent material
EP0632961A1 (de) * 1993-07-06 1995-01-11 Bühler Ag Conche

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1381877A (en) * 1971-10-21 1975-01-29 Waters C N Fertilizers
GB2035822A (en) * 1978-12-02 1980-06-25 Walley C Mixing bulk materials
US4506990A (en) * 1984-03-30 1985-03-26 Stirco Inc. Mixer for fluent and nonfluent material
EP0632961A1 (de) * 1993-07-06 1995-01-11 Bühler Ag Conche

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108854663A (zh) * 2018-07-03 2018-11-23 安徽万纳包装科技股份有限公司 一种印刷uv油墨的恒温搅拌装置

Also Published As

Publication number Publication date
PL396786A1 (pl) 2013-04-29

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