Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
  • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
  • F27B7/2016—Arrangements of preheating devices for the charge
  • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
  • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
  • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B7/00—Hydraulic cements
  • C04B7/36—Manufacture of hydraulic cements in general
  • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling

Definitions

• the invention relates to a device for separating a solid and a gas and a plant for cement production.
• Cyclone edge deposited particles come into the gas inlet flow of the cyclone.
• the invention is therefore based on the object to improve the separation efficiency of the device for separating a solid and a gas.
• the erf ⁇ ndungswashe apparatus for separating a solid and a gas consists essentially of
• Solid feed opening for supplying a solid and a gas supply opening for supplying a gas b. a descending helical and / or spiral-like line in which by centrifugal forces the gas-solid suspension in a stream of solids and a
• Gas stream is separated, c. a deflection head, which connects the riser with the helical and / or spiral-like line, wherein at least one kink in the cable guide is provided in the region of the deflection, d. a solids line communicating with the end of the helical and / or spiral line for discharging the stream of solids and e. a gas conduit communicating with the end of the helical and / or spiral conduit for draining the gas flow.
• a line is understood, which is at least partially helical and / or helical.
• the rotation of the helical and / or spiral-like line can in particular only extend over a smaller angular range, for example 90 °.
• the kink in the wiring in a side view at an angle ⁇ 120 °.
• a kink can be provided in the wiring, the in plan view an angle ⁇ 170 °.
• the kink is preferably designed so that the gas-solid suspension is deflected at an acute or obtuse angle.
• the deflection head can in the connection region to the riser a first cross-sectional shape and in the connection area to the helical and / or spiral
• the riser for example, round and the helical and / or spiral line can be formed angular.
• the deflection head has a first, connected to the riser part and a second, in connection with the helical and / or spiral line part, wherein the second part of the deflection so connected to the first part of the deflection is that results in between the two parts of the kink in the wiring.
• the first part of the deflection head can be formed, for example, by a tubular section with a circular cross section, which merges at its end facing away from the riser into the second part of the deflection head, the second part being a transition piece from the circular cross section of the first part to the cross section of the turning part. and / or spiral-shaped line, and wherein the two parts are connected to one another such that the gas-solid suspension is deflected at an acute and / or obtuse angle.
• the first part of the deflection head has a cylindrical peripheral wall and the second part of the deflection is connected in the region of the cylindrical peripheral wall. Furthermore, the first part of the deflection head can be closed in the flow direction by a transversely or obliquely to the flow direction extending end wall.
• Line connected to the deflection such that the at least one or one another kink at the junction between the deflection and helical and / or spiral line is provided.
• a separating chamber communicating with the end of the helical and / or spiral line can be provided, to which the
• Solid line for discharging the solids flow and the gas line for discharging the gas flow are connected.
• the above-described apparatus for separating a solid and a gas is also suitable for being stacked in several stages.
• the gas line of a stage goes into the riser of the next higher level and the solid line of a stage opens into the riser of the next lower level. In this way, the solid can be passed from top to bottom through the individual stages and brought into contact with the gas stream conducted in the reverse direction.
• the apparatus for separating a solid and a gas can be used in particular for a preheater and / or a calciner of a plant for cement production with preheater, calciner and furnace.
• Embodiment, 3a to 3c different views of a device for separating a solid and a gas according to a third
• 6a to 6c show different views of a device for separating a solid and a gas according to a sixth
• FIG. 7a to 7d are various views of a device for separating a solid and a gas according to a seventh embodiment
• Fig. 8 is a side view of a preheater
• Fig. 9 is a three-dimensional representation of a plant for cement production.
• the device for separating a solid and a gas shown in FIGS. 1 a to 1 c is, for example, a device for preheating, cooling and / or calcining fine-grained materials in cement production. It consists essentially of a riser 1 for
• the deflection head 7 has a first part 7a connected to the riser 1 and a second part 7b connected to the helical and / or spiral line 4, the second part 7b of the deflection head 7 being connected to the first part 7a in this way is that between the two parts a first kink
• the bend 10 in the line guide has an angle ⁇ ⁇ 160 ° in the side view of FIG. Ia.
• the first part 7a of the deflection head 7 is formed by a rohrformigen section with a circular cross section, which corresponds to the diameter of the riser 1 in the illustrated embodiment.
• the laterally connected to the rohrformigen portion of the first part 7a second part 7b sets
• Transition piece from the circular cross section of the first part to the cross section of the helical and / or spiral line 4.
• both parts 7a, 7b are interconnected so that the gas-solid suspension is deflected at an obtuse angle.
• a second kink In addition to the first bend 10 is in the junction between the deflection 7 and the helical and / or spiral line 4, a second kink
• the two creases 10, 11 favor the separation of the solids stream and the gas stream, which are discharged at the end of the helical and / or spiral line 4 via the solids line 8 and the gas line 9.
• a standing with the end of the helical and / or spiral line 4 in conjunction separation chamber 12 is provided, to which the solid line 8 for discharging the solids flow 5 and the gas line 9 are connected to divert the gas stream.
• the separation chamber 12 is cylindrical in the mouth region of the helical and / or spiral line 4 and merges into the top of the gas line 9. Below joins a funnel-shaped tapered portion 12a, to which the solid line is connected.
• the helical and / or spiral line 4 preferably opens tangentially at an angle ⁇ relative to the horizontal of at least 30 ° in the
• the exemplary embodiment according to FIGS. 2a to 2c substantially corresponds to the exemplary embodiment described above and differs only in that the second part 2b of the deflection head 7 is not straight but curved in plan view. The curvature of the second part 7b then continues in the helical and / or spiral line 4. The centrifugal forces thus already act on the gas-solid suspension in this region of the deflection head. Otherwise, a first bend 10 between the two parts 7a, 7b of the deflection and a second bend 11 in the region of the junction between the deflection 7 and the helical and / or spiral-like line 4 are provided in a matching manner in this embodiment.
• the second part 7b of the deflecting head 7 is no longer inclined upwards at the end of the first part 7a, but obliquely downwards and laterally in the direction of flow.
• the first part 7a of the deflection head 7 in turn has a cylindrical
• connection point then also represents the bend 10 in the line guide.
• the first part 7a of the deflection head 7 extends a little further above the connection point 7b and is then closed off with an end wall 7c extending transversely to the flow direction.
• the fourth exemplary embodiment according to FIGS. 4 a to 4 c differs from the third exemplary embodiment in that the second part 7 b of the deflecting head 7 is directed not upwards but upwards.
• the fifth exemplary embodiment according to FIGS. 5 a to 5 c again corresponds essentially to the third exemplary embodiment.
• the difference is that the first part 7a is not extended beyond the junction of the second part 7b, but terminates therewith, so that the upper end face 7c of the first part 7a extends approximately in a plane with the upper boundary wall of the second part 7b
• the first part 7a of the deflecting head 7 is again designed as a tubular section with a circular cross section, to which the second part 7b is tangentially connected.
• kink 7b has a substantially rectangular cross-section and is curved in the plan view according to FIG. 6b. Its lower boundary wall 7d is rising and its upper boundary wall 7d aligned substantially horizontally or transversely to the central axis of the first part 7a. By the obliquely upward extending lower boundary wall 7d results for the flow in turn, a kink 10. Another kink 11 is provided at the junction with the helical and / or spiral line 4.
• the helical and / or spiral-like line 4 opens into the deposition chamber 12, which has a curved portion 12a in the illustrated embodiment, which connects to the helical and / or spiral line 4, wherein this
• Section receives and continues the curved course of the helical and / or spiral line 4 and finally into a cylindrical portion 12 b of
• Separation chamber opens at the bottom of the solid line 8 and above the gas line 9 are connected.
• FIGS. 6a to 6c A variant of the seventh embodiment is shown in Figures 7a to 7d.
• this variant differs only in that the end face 7c of the tube-shaped first part 7a is not transverse to the flow direction (see FIGS. 6a to 6c), but obliquely in the direction of the second one
• Part 7b is aligned. This obliquely set end face 7c in conjunction with the second part 7b running obliquely upward in the lower region forms the first bend in the cable guide. The second bend is again formed in the region of the connection point with the helical and / or spiral-like line 4.
• the radius and / or the slope and / or the cross-sectional shape and / or the cross-sectional size of the helical and / or spiral line 4 changes in the flow direction of the gas-solid suspension.
• the helical and / or spiral line 4 can be adapted to external conditions. This is particularly advantageous when several stages are interleaved and arranged one above the other.
• the radius, pitch, cross-sectional shape and / or cross-sectional size can thereby jump in the flow direction and / or at least in one section also change continuously. For example, a radius reduction causes an increase in centrifugal force, while a radius increase corresponds to a decrease in centrifugal force.
• influence on the flow velocity can be made.
• the devices described above are preferably used for carrying out chemical and / or physical reactions between a solid and a gas, in particular for preheating, cooling and / or calcining fine-grained materials, wherein a plurality of stages arranged one above the other can be provided.
• the gas line of a stage goes into the riser of the next higher level and the solid line of a stage opens into the riser of the next lower level.
• FIG. 8 is for example a three-stage preheater for
• the individual stages are indicated schematically. They may optionally be formed according to one or more of the previously described embodiments. It is thus particularly conceivable that the individual stages I, II, III are configured differently.
• a solid to be treated in the uppermost stage III is supplied via a solids line 8 '"and discharged as a treated solid 5, for example, preheated solid, from the lowest stage I.
• the gas 6 supplied to the bottom stage is the hot exhaust gas of a furnace or a calciner, and the gas 6 "exhausted via the gas pipe 9" in the third stage becomes For example, for dedusting a filter or a downstream high-efficiency separator supplied.
• the treated solid passes, for example, in a calciner or a furnace to the other
• the three stages can be arranged very compact and intertwined. It can further be provided that the helical and / or spiral-like lines 4, 4 ', 4 "of at least two successive stages are formed alternately left and right-handed rotation.
• FIG. 9 shows a three-dimensional representation of a plant for the heat treatment of fine-grained material in cement production with a rotary kiln 10, a calciner 20 and a preheater 30.
• the calciner 20 and / or the preheater 30 can be constructed according to FIGS. 1 to 8 be formed described embodiments. It is also conceivable that the individual features of the various embodiments are combined.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Structural Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Separating Particles In Gases By Inertia (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Cyclones (AREA)
• Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)
• Branch Pipes, Bends, And The Like (AREA)
• Silicon Compounds (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39790969

Family Applications (3)

Family Applications Before (1)

Family Applications After (1)

Country Status (12)

Families Citing this family (3)

Citations (4)

Family Cites Families (40)

• 2008
  • 2008-06-25 BR BRPI0813805-2A2A patent/BRPI0813805A2/pt not_active IP Right Cessation
  • 2008-06-25 BR BRPI0812852-9A2A patent/BRPI0812852A2/pt not_active IP Right Cessation
  • 2008-06-25 CA CA002691869A patent/CA2691869A1/en not_active Abandoned
  • 2008-06-25 CN CN200880102000.5A patent/CN101849155B/zh not_active Expired - Fee Related
  • 2008-06-25 RU RU2010108294/02A patent/RU2463540C2/ru not_active IP Right Cessation
  • 2008-06-25 WO PCT/EP2008/058104 patent/WO2009019071A1/de not_active Ceased
  • 2008-06-25 JP JP2010519392A patent/JP2010535687A/ja active Pending
  • 2008-06-25 RU RU2010108293/02A patent/RU2477430C2/ru not_active IP Right Cessation
  • 2008-06-25 AT AT08774293T patent/ATE520942T1/de active
  • 2008-06-25 CA CA002691834A patent/CA2691834A1/en not_active Abandoned
  • 2008-06-25 US US12/672,525 patent/US8439670B2/en not_active Expired - Fee Related
  • 2008-06-25 EP EP08774293A patent/EP2106519B1/de not_active Not-in-force
  • 2008-06-25 CN CN2008801020306A patent/CN101772686B/zh not_active Expired - Fee Related
  • 2008-06-25 DK DK08774293.8T patent/DK2106519T3/da active
  • 2008-06-25 WO PCT/EP2008/058105 patent/WO2009019072A1/de not_active Ceased
  • 2008-06-25 AT AT08761374T patent/ATE492779T1/de active
  • 2008-06-25 EP EP08761374A patent/EP2174086B1/de not_active Not-in-force
  • 2008-06-25 DE DE502008002099T patent/DE502008002099D1/de active Active
  • 2008-06-25 AT AT08761375T patent/ATE532019T1/de active
  • 2008-06-25 WO PCT/EP2008/058100 patent/WO2009019070A1/de not_active Ceased
  • 2008-06-25 EP EP08761375A patent/EP2106518B1/de not_active Not-in-force
  • 2008-06-25 ES ES08774293T patent/ES2370092T3/es active Active
  • 2008-06-25 US US12/672,530 patent/US8454715B2/en not_active Expired - Fee Related
  • 2008-06-25 JP JP2010519393A patent/JP2010535688A/ja active Pending

Patent Citations (4)

Also Published As

Similar Documents

Legal Events