EP3850288A1 - Kühler zum kühlen von klinker und verfahren zum betreiben eines kühlers zum kühlen von klinker - Google Patents
Kühler zum kühlen von klinker und verfahren zum betreiben eines kühlers zum kühlen von klinkerInfo
- Publication number
- EP3850288A1 EP3850288A1 EP19765713.3A EP19765713A EP3850288A1 EP 3850288 A1 EP3850288 A1 EP 3850288A1 EP 19765713 A EP19765713 A EP 19765713A EP 3850288 A1 EP3850288 A1 EP 3850288A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooler
- temperature
- determined
- cooling air
- temperature distribution
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 90
- 239000004568 cement Substances 0.000 claims abstract description 13
- 238000005273 aeration Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 45
- 238000009423 ventilation Methods 0.000 claims description 25
- 230000007257 malfunction Effects 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000032258 transport Effects 0.000 description 40
- 239000000463 material Substances 0.000 description 34
- 239000013590 bulk material Substances 0.000 description 6
- 239000000112 cooling gas Substances 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004616 Pyrometry Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- C04B7/47—Cooling ; Waste heat management
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangement of monitoring devices; Arrangement of safety devices
- F27D21/0014—Devices for monitoring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0056—Regulation involving cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0059—Regulation involving the control of the conveyor movement, e.g. speed or sequences
Definitions
- Cooler for cooling clinker and method for operating a cooler for cooling clinker
- the invention relates to a cooler for cooling clinker and method for operating a cooler for cooling clinker of a cement manufacturing plant.
- hot bulk material such as cement clinker
- the bulk material is placed on a ventilation floor of a cooler through which cooling gas can flow.
- the hot bulk material is then moved from one end of the cooler to the other end for cooling and cooling gas flows through it.
- a cooler is known from DE 100 18 142 B4, which has a plurality of conveying elements which can be moved in the conveying direction and counter to the conveying direction.
- a method for operating a cooler for cooling clinker of a cement production plant comprises at least the steps:
- the temperature is preferably determined exclusively in exactly one measuring plane.
- the cooler is, for example, connected downstream of a kiln for burning cement clinker and is preferably arranged below the kiln outlet.
- the cooler has an inlet area to which the ventilation floor connects.
- a stationary inlet grate is arranged, which preferably extends obliquely, at an angle to the ventilation floor and adjoins this. Cooling air also flows through the inlet grate.
- the clinker to be cooled is conveyed along the ventilation floor, for example, according to the “walking floor principle”, the ventilation floor comprising a plurality of planks, in particular transport grates, and at least two planks being moved simultaneously in the conveying direction and at the same time counter to the conveying direction.
- a temperature distribution is to be understood as the in particular two-dimensional distribution of the temperature in one plane.
- the temperature distribution is calculated from individual temperature data determined in the measuring plane.
- the temperature is measured in particular at a plurality of points or lines in the plane and a distribution of the temperature over the entire measurement plane or at least part of the measurement plane is calculated therefrom.
- a temperature distribution preferably comprises a plurality of temperature values, for example measured or calculated, which are to be assigned to a location or an area in the respective measurement plane.
- the measuring points are preferably evenly spaced from one another and distributed over the entire respective measuring plane.
- a measurement plane has at least 10, preferably 100, in particular 10,000 measurement points.
- a temperature measuring device is arranged at each measuring point.
- a temperature measuring device preferably has a transmitter and a receiver, the temperature determined preferably being an average temperature between the transmitter and the receiver. It is also conceivable that each temperature value corresponds to a measured value or represents a calculated mean value from several measurements.
- a plurality of temperature measuring devices are preferably arranged in each measuring plane, each temperature measuring device having a transmitter and a receiver.
- the temperature measuring devices, in particular the transmitters and receivers, of each measurement level each communicate with one another, so that an, in particular average, temperature is determined between each transmitter and receiver of a respective measurement level.
- n temperature measuring devices for example, n * (n-1) measured values are determined in the measuring plane. This results, for example, in a two-dimensional distribution of the temperature.
- temperature measuring devices of different measuring levels to communicate with one another, so that temperature values are determined between two temperature measuring devices of different measuring levels. This results in a three-dimensional distribution of the temperature.
- the temperature distribution is preferably determined in at least two or more separate measurement planes within the cooler.
- the temperature is preferably determined in two to eight, in particular four to six, measurement planes.
- the measurement planes extend within the cooler, in particular above and parallel to the ventilation floor.
- the temperature distribution in each measurement level is determined over at least part of the extent of the measurement level or over the entire measurement level and is determined by means of at least one temperature measurement device in each measurement level.
- the temperature measuring devices are preferably each arranged in one measuring plane.
- the temperature distribution of the gas, in particular the cooling gas, and not the radiation temperature distribution is preferably determined.
- the measuring plane preferably extends transversely to the direction of flow of the cooling gas, in particular parallel to the ventilation floor or the inlet grate.
- the temperature is preferably measured in the gas stream of the cooling air. depending on the temperature distribution determined, the delivery speed of the clinker and / or the flow rate of the cooling air of the cooler is reduced or increased.
- the regulation / control of at least one operating parameter from the conveying speed of the clinker and / or flow speed of the cooling air of the cooler as a function of the determined temperature distribution enables optimal cooling of the clinker.
- the clinker to be cooled is cooled in particular uniformly, the cooling air and / or the conveying speed being set optimally in order to achieve the most efficient cooling possible.
- the temperature distribution is determined simultaneously in at least two measurement levels.
- the two measurement planes are arranged parallel to one another, for example.
- both measurement levels are arranged above the ventilation floor.
- a determination of the temperature distribution in at least two measurement levels simultaneously enables the temperature to be monitored in a plurality of areas within the cooler.
- the at least one measurement plane extends transversely to the direction of flow of the cooling air. All measuring planes of the cooler preferably extend transversely to the flow direction of the cooling air, preferably orthogonally.
- the measurement planes are arranged, for example, parallel to one another and to the ventilation floor or the intake grate.
- the temperature distribution is determined acoustically.
- a temperature measuring device for determining the temperature comprises a sound horn, preferably as a transmitter and / or receiver.
- the temperature distribution is determined, for example, using sound pyrometry.
- a transmitter sends a compressed air-generated sound signal, which preferably has a frequency range between 200 and 3000 Hz.
- the transit time of the signal to a receiver is determined and from this the temperature of the path between the transmitter and receiver is determined, since the speed of sound is dependent on the temperature in a known manner. If several receivers and transmitters are provided, the signal paths crossing each other, for example a graphical representation of a temperature distribution of a measurement level can be determined.
- the determined temperature distribution is compared with a previously determined or determined average temperature value and / or a temperature distribution and a deviation from this average temperature value and / or the temperature distribution is determined.
- the mean temperature value is, for example, a temperature value averaged over the entire measuring level, which was calculated from the determined temperature distribution.
- the mean value can also be a predetermined mean value of, for example, 250 ° C. to 1100 ° C., preferably 400 ° C. to 800 ° C., in particular 500 ° C. to 600 ° C.
- Each temperature value of the temperature distribution is preferably compared with the Temperature mean value compared and a deviation determined.
- the conveying speed of the clinker and / or the flow speed of the cooling air of the cooler is increased or decreased, for example, if at least one temperature value of the temperature distribution deviates from the previously determined or determined average temperature value.
- an area is determined in the measuring plane in which the deviations exceed a value of approximately +/- 25-150 ° C, preferably +/- 50 ° -100 ° C, in particular +/- 60-80 ° C .
- This is the area of the measuring plane in which all temperature values of the temperature distribution deviate by approximately +/- 25-150 ° C, preferably +/- 50 ° -100 ° C, in particular +/- 60-80 ° C exceeds the average temperature.
- An area can also comprise only one point which is assigned to a temperature value which has the deviation described above.
- an area comprises a plurality of points on the respective measurement level, each of which is assigned a temperature value with a deviation mentioned above.
- the amount of cooling air entering the cooler, the speed of a fan for generating a cooling air flow and / or the amount of cooling air emerging from the cooler is controlled according to a further embodiment as a function of the determined temperature distribution.
- the amount of cooling air is determined by the size of the inlet openings through which cooling air enters the cooler.
- the cooler preferably has a plurality of inlet openings, the diameter of which can be changed in particular. For example, the diameter of at least one inlet opening is changed depending on the temperature distribution determined.
- the conveying speed of the clinker and / or flow speed of the cooling air is changed when the temperature in a region of the measuring plane has a previously determined or determined mean value of approximately +/- 25-150 ° C., preferably +/- 50 ° -100 ° C, in particular +/- 60-80 ° C.
- the conveying speed of the clinker is increased when the temperature in a region of the measuring plane exceeds the previously determined or determined mean value by approximately 25-150 ° C., preferably 50 ° -100 ° C., in particular 60-80 ° C.
- the flow rate of the cooling air is increased when the temperature in a region of the measuring plane falls below a previously determined or determined mean value by approximately 25-150 ° C., preferably 50 ° -100 ° C., in particular 60-80 ° C.
- the determined temperature distribution is compared with a previously determined sample temperature distribution, and if there is a match, a specific malfunction is recognized.
- each operational malfunction is assigned a specific sample temperature distribution, which is stored in the control device.
- the open-loop / closed-loop control device compares the transmitted temperature distributions of the measuring planes with the sample temperature distributions and, if the transmitted temperature distribution matches one of the sample temperature distributions, detects a specific malfunction.
- the invention also includes a cooler for cooling clinker, in particular a cement manufacturing plant with an aeration floor for conveying the clinker in a conveying direction, and at least one fan for generating a cooling air flow which flows through the aeration floor in cross flow.
- a cooler for cooling clinker in particular a cement manufacturing plant with an aeration floor for conveying the clinker in a conveying direction, and at least one fan for generating a cooling air flow which flows through the aeration floor in cross flow.
- Above the ventilation floor is at least one measuring level, each with at least one temperature measuring device for determining a temperature distribution in the Measuring plane arranged.
- the cooler also has a control device that is designed such that it controls the conveying speed of the clinker and / or the flow speed of the cooling air flow as a function of the determined temperature distribution.
- the cooler comprises at least two measuring levels, each of which comprises at least one temperature measuring device.
- the measurement planes are spaced apart from one another in the flow direction of the cooling air flow.
- control device is connected to at least one means, so that the control device controls the conveying speed of the clinker and / or flow speed of the cooling air as a function of the temperature distribution determined by means of the temperature measuring device.
- the means is, for example, a means for changing the size of at least one cooling air inlet, such as a flap.
- the means is, for example, a drive motor for driving the conveyor elements or conveyor planks of the ventilation floor.
- the temperature measuring device is an acoustic sensor. Description of the drawings
- the figure shows a schematic representation of a cooler in a sectional view according to an embodiment.
- a cooler 10 for cooling bulk material such as cement clinker.
- a cooler 10 is preferably arranged after a furnace, such as a rotary kiln for burning cement clinker, so that the cement clinker is transported from the furnace outlet into the cooler.
- the cooler 10 has an inlet 12 for the inlet of the material to be cooled into the cooler.
- the inlet 12 is arranged, for example, below an oven outlet, so that the material to be cooled falls into the cooler 10.
- the cooler 10 shown in FIG. 1 has an inlet area 14 which adjoins the inlet 12.
- the cooler 10 has a ventilation base 18 which receives the material to be cooled and transports it along the extent of the cooler 10.
- the ventilation floor 18 comprises, for example, a plurality of grids via which the material is transported and cooled.
- the ventilation floor 18 comprises an inlet grate 16 onto which the material to be cooled is fed, for example the material to be cooled falls out of the oven onto the inlet grate 16.
- the inlet grate 16 is inclined, for example at an angle of 30 ° -60 °, in particular 40 ° -50 °, preferably 45 ° to the vertical.
- the inlet grate 16 is arranged in a stationary manner and does not move relative to the other components of the cooler 10.
- the inlet grate is preferably a grate with which cooling air can flow through, so that material on the inlet grate 16 by means of a material flowing through the grate Cooling air flow is cooled.
- the inlet grate 16 is adjoined by a substantially horizontal first transport grate 20, onto which the material to be cooled is fed from the inlet grate 16 io
- the first transport grate 20 has, for example, a plurality of drivers 22 which are attached to surfaces of the transport grate 20 pointing upward.
- the transport grate 20 is, for example, a push conveyor, the drivers 22 being movable relative to the transport grate 22 and transporting the material in the conveying direction from the cooler inlet to the cooler outlet.
- the drivers 22 extend, for example, over the entire length of the transport grate 20 and are arranged parallel to one another. To transport the material along the transport grate 20, the drivers 22 move, for example, according to the "walking floor principle", the drivers being moved back and forth in the conveying direction.
- the movement of the drivers takes place in such a way that each driver moves back together with at least one adjacent driver in the conveying direction and each time at the same time with an adjacent driver against the conveying direction. Overall, this results in a transport of the material in the direction of conveyance.
- the transport grate 20 can also be, for example, a moving floor conveyor, the transport grate 20 having a plurality of parallel plank gratings which can be moved relative to one another.
- the plank gratings of the moving floor conveyor have, for example, drivers 22 fixedly attached to the plank gratings or are designed entirely without drivers 22.
- the plank gratings are also moved, for example, according to the “walking floor principle” described above.
- the first transport grate 20 has a discharge end in the conveying direction, at which the material to be cooled falls off the transport grate.
- a comminution device 24 for comminuting the material leaving the first transport grate 20 is arranged below the ejection end of the first transport grate 20.
- the comminution device 24 is, for example, a crusher or a mill, which preferably has two or three rollers.
- the ventilation floor 18 also includes, for example, a second transport grate 26, which is preferably arranged below the comminution device 24. The material comminuted by means of the comminution device 24 falls onto the second transport grate and is transported in the conveying direction.
- the second transport grate 26 essentially corresponds to the first transport grate 20, the material also being transported according to the “walking floor principle”.
- the cooled clinker falls from the transport grate 26 and leaves the cooler through an outlet 28 arranged, for example, below the second transport grate 26.
- the cooler 10 also has a plurality of cooling air inlets 30 below the ventilation base 18.
- the cooling air inlets 30 are each connected to a fan 32, for example, so that the cooling air is blown into the cooler 10 by means of the fan 32. It is also conceivable to arrange a plurality of fans 32, a group of cooling air inlets 30 or exactly one cooling air inlet 30 being connected to the fan.
- the cooler 10 has a first air outlet 34 which is arranged above the inlet grate 16, so that the cooling air flowing through the inlet grate 16 leaves the cooler 10 through the first air outlet 34.
- the cooling air leaving the first air outlet 34 is fed to the furnace (burner), a preheater and / or a calciner of a cement production plant.
- the cooler also has a second air outlet 36, which is arranged in the conveying direction of the material at the end of the cooler, preferably above the second transport grate 26.
- the cooling air flowing through the second transport grate 26 leaves the cooler 10 through the second air outlet 36.
- One or a plurality of measurement levels for example four measurement levels, for determining a temperature distribution are arranged above the inlet grate 16 and the transport grate 20.
- a first measuring plane 38 is arranged above and parallel to the inlet grate 16.
- a second measurement plane 40 is arranged above and parallel to the first measurement plane 38.
- the second measuring plane 40 is preferably arranged behind the first measuring plane 38 in the flow direction of the cooling air.
- the first and the second measuring plane 38, 40 each extend, for example, over the entire surface of the inlet grate 16, it also being conceivable that they only extend over a partial area of the surface.
- a third measuring plane 42 is arranged above and parallel to the first transport grate 20, a fourth measuring plane 44 being arranged above and parallel to the third measuring plane 42.
- the fourth measuring plane 44 is preferably arranged behind the third measuring plane 42 in the flow direction of the cooling air.
- the third and fourth measuring planes 42, 44 each preferably extend over the entire surface of the first transport grate 20, it also being conceivable that they only extend over a partial area of the surface.
- a fifth measuring plane 46 is arranged above and parallel to the second transport grate 26, a sixth measuring plane 48 being arranged above and parallel to the fifth measuring plane 46.
- the sixth measurement plane 48 is preferably arranged behind the fifth measurement plane 46 in the flow direction of the cooling air.
- the fifth and the sixth measurement planes 46, 48 each preferably extend over the entire surface of the second transport grate 26, it also being conceivable that they only extend over a partial region of the surface.
- the fifth and sixth measurement planes 46, 48 only extend over the partial region of the second transport grate 26, which is not arranged below the comminution device 24.
- “below” and “above” should be understood to mean in particular the vertical projection.
- the cooler 10 has at least one or a plurality of temperature measuring devices for determining the temperature in the respective measuring plane, which are not shown in the figure.
- four temperature measuring devices are installed in each measuring plane 38-48.
- Each measuring plane 38-48 preferably has two to ten, preferably four to six, temperature measuring devices.
- the temperature measuring devices are preferably attached to the inner wall of the cooler 10 in the respective measuring plane 38-48 and in particular are evenly spaced from one another. It is also conceivable to arrange only two temperature measuring devices in each measuring plane 38-48.
- the temperature measuring devices are in particular designed to determine a temperature distribution within the measuring plane 38-48.
- the use of an acoustic sensor as a temperature measuring device is particularly suitable for this purpose.
- the temperature measuring devices are movably attached so that the orientation of the respectively associated measuring plane 38-48 can be adjusted.
- the cooler 10 preferably has a control device 50 for controlling the conveying speed of the material to be cooled and / or the flow speed or amount of air of the cooling air.
- the control is a device 50 for controlling the conveying speed of the material to be cooled and / or the flow speed or amount of air of the cooling air.
- Control device 50 is connected to at least one of the temperature measuring devices, so that it communicates the determined temperature, in particular the determined temperature distribution in the respective measuring plane, to the control
- Control device 50 transmitted.
- the control is preferably
- each of the temperature measurement devices of the measurement planes 38-48 transmits the measured temperature data to the control / regulation device 50. This is shown in the figure by the broken lines / arrows between the measurement planes 38-48 and the control / regulation device 50.
- the control device 50 is connected, for example, to the cooling air inlets 30 in such a way that it controls the amount of cooling air that flows through the respective cooling air inlet 30.
- the control device 50 is preferably connected to the one or the plurality of fans 32, so that the fan speed is controlled by the control device 50.
- Control device 50 is in particular connected to the first and / or second cooling air outlet 34, 36, so that the amount of cooling air flowing through the first and / or second cooling air outlet 34, 36 can be controlled / regulated by means of the control device 50 .
- the control / Regulation device 50 is preferably connected to the ventilation floor 18, so that the conveying speed of the material to be cooled, in particular the conveying speed of the first and / or second transport grate 20, 26, is controlled / regulated by means of the control device 50.
- the control device 50 is in particular connected to the clinker outlet 28 of the cooler 10, so that the amount of clinker that leaves the cooler is controlled by the control device 50.
- control device 50 is connected to the cooler inlet 12, so that the amount of material that is introduced into the cooler 10 is controlled by the control device 50.
- the quantities described above such as the amount of cooling air into the cooler 10, the fan speed, the amount of cooling air flowing through the first and / or the second cooling air outlet 34, 36, the conveying speed of the material to be cooled, the amount Clinker, which leaves the cooler and / or the amount of material that is introduced into the cooler 10, is controlled / regulated as a function of the temperature distribution in the respective measurement planes 38-48 determined by means of the temperature measuring devices.
- control device 50 is connected to the furnace, in particular the rotary tube furnace 52, so that, for example, the amount of clinker leaving the furnace 52 or the temperature of the furnace 52 as a function of the temperature distribution in the respective measurement planes 38 determined by means of the temperature measurement devices - 48 is controlled / regulated.
- the parameters that can be controlled / regulated by the control device 50 are, for example, the conveying speed of the clinker, the flow speed of the cooling air, the amount of cooling air entering the cooler 10, the speed of the fan for generating the cooling air flow, and the amount of Cooling air exiting the cooler, the amount of clinker that exits the cooler 10 and / or the amount of clinker that is introduced into the cooler 10.
- control / regulating device 50 compares, for example, the determined temperature distribution with a previously determined or determined mean temperature value and / or one Temperature distribution. If there is a deviation from the previously determined or ascertained mean temperature value and / or the temperature distribution, the aforementioned parameters are changed by means of the control device 50.
- the control / regulating device 50 is preferably designed in such a way that it detects certain operating faults on the basis of the transmitted temperature distributions. For example, each operational malfunction is assigned a specific sample temperature distribution, which is stored in the control device 50. The control / regulating device 50 compares the transmitted temperature distributions of the measurement planes 38-48 with the sample temperature distributions and, if the transmitted temperature distribution matches one of the sample temperature distributions, detects a specific malfunction. If a specific malfunction is recognized, the control device 50 regulates / controls at least one or a plurality of the parameters in a predetermined manner.
- red river An example of a malfunction is the occurrence of the “red river”, which preferably occurs at the side edge of the ventilation floor, preferably over the entire length or a partial area of the ventilation floor.
- a red river is to be understood as fluidized fine material that, in particular in the lateral edge regions of the cooler, floats on the material to be cooled. This is due to the fact that too much fine material flows from the oven into the cooler. With a "Red River", the fine material moves faster than the coarser material to be cooled through the cooler and is therefore not cooled sufficiently.
- a “red river” in the cooler is detected, for example, when the temperature in at least one or both lateral edge areas of the cooler deviates from an optimal temperature value by at least a predetermined value over the entire or only part of the extent of the cooler. If the control / regulating device 50 detects the operational fault "Red River” in particular by comparing the temperature distribution with one of the sample temperature distributions, the conveying speed of the material on the ventilation floor 18 is reduced. In particular, the conveying speed of the first and / or the second transport grate 20, 26 is reduced.
- a malfunction is the "flash case", where the determined temperature distribution deviates from the previously determined mean temperature or temperature distribution by at least 40 ° -60 °, preferably at least 50 °. The deviation occurs, for example, over a period of at least 30 s. For example, the temperature deviation occurs in the first and / or second measurement plane 38, 40. If the control / regulating device 50 detects such a “flash case”, the flow rate of the cooling air through the cooler is increased. In particular, the determined temperature distribution is compared with a sample temperature distribution assigned to the “flashfall” and, if there is a match, the malfunction “flashfall” is recognized. For example, the speed of the fan 32 or of the several fans is increased when the “flashfall” malfunction is detected. In particular, the amount of cooling air through the cooling air inlets 30 in the front area of the cooler 10 is increased, preferably increased more than in the rear areas of the cooler 10 in the conveying direction of the material.
- Another example of a malfunction is the "blow-through", whereby the determined temperature distribution is a deviation from the predetermined mean temperature or temperature distribution by -20 ° C to -80 ° C, preferably -30 ° C to -60 ° C, especially - 50 ° C. If such a malfunction is detected, the delivery speed of the clinker is reduced. In particular, the determined temperature distribution is compared with a sample temperature distribution assigned to the “blow-through” and, if there is a match, the malfunction “blow-through” is recognized.
- Another example of a malfunction is the "snowman", whereby the determined temperature distribution, in particular the first and / or the second measuring level 38, 40 above the static inlet grate 16, deviates from the predetermined average temperature or temperature distribution by at least - 50 ° C, preferably over a period of at least three hours.
- the determined temperature distribution is compared with a sample temperature distribution assigned to the “snowman” and if there is a match, the “snowman” malfunction is recognized. If such a malfunction is detected, the flow rate of the cooling air is changed such that the cooling air outlets 30 below the inlet grate 16 are opened and closed at intervals.
- control device 50 determines an area in the measurement plane 38-48 in which the deviations of the determined temperature distribution from the previously determined or determined temperature mean value and / or the previously determined or determined temperature distribution have a value of approximately +/- 25 -150 ° C, preferably +/- 50 ° -100 ° C, in particular +/- 60-80 ° C.
- the conveying speed of the clinker and / or flow speed of the cooling air is then changed only in the determined area of the cooler 10.
- the flow velocity and / or the amount of cooling air through the bottom is determined, for example of the inlet grate 16 arranged cooling air inlets 30 and / or the amount of cooling air exiting the cooler through the first cooling air outlet 34.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018215348.5A DE102018215348A1 (de) | 2018-09-10 | 2018-09-10 | Kühler zum Kühlen von Klinker und Verfahren zum Betreiben eines Kühlers zum Kühlen von Klinker |
| PCT/EP2019/073868 WO2020053100A1 (de) | 2018-09-10 | 2019-09-06 | Kühler zum kühlen von klinker und verfahren zum betreiben eines kühlers zum kühlen von klinker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3850288A1 true EP3850288A1 (de) | 2021-07-21 |
Family
ID=67902531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19765713.3A Pending EP3850288A1 (de) | 2018-09-10 | 2019-09-06 | Kühler zum kühlen von klinker und verfahren zum betreiben eines kühlers zum kühlen von klinker |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12162808B2 (de) |
| EP (1) | EP3850288A1 (de) |
| CN (1) | CN112673226B (de) |
| DE (1) | DE102018215348A1 (de) |
| WO (1) | WO2020053100A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018215348A1 (de) * | 2018-09-10 | 2020-03-12 | Thyssenkrupp Ag | Kühler zum Kühlen von Klinker und Verfahren zum Betreiben eines Kühlers zum Kühlen von Klinker |
| CN114893997A (zh) * | 2022-05-31 | 2022-08-12 | 南京凯盛国际工程有限公司 | 一种具有声波测温装置的篦冷机及其控制方法 |
| CN115839621B (zh) * | 2022-11-21 | 2026-02-06 | 天津中材工程研究中心有限公司 | 一种窑头三次风温度的控制方法及控制系统 |
| CN120403270B (zh) * | 2025-07-02 | 2025-09-09 | 龙岩学院 | 一种陶粒焙烧成型系统 |
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| DE102018215348A1 (de) * | 2018-09-10 | 2020-03-12 | Thyssenkrupp Ag | Kühler zum Kühlen von Klinker und Verfahren zum Betreiben eines Kühlers zum Kühlen von Klinker |
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| DE102019215771A1 (de) * | 2019-10-14 | 2021-04-15 | Thyssenkrupp Ag | Kühler zum Kühlen von Schüttgut |
| EP3911615B1 (de) * | 2020-04-08 | 2022-07-13 | thyssenkrupp Industrial Solutions AG | Verfahren zur herstellung von zementklinker |
| IL297010B2 (en) * | 2020-05-05 | 2025-10-01 | Thyssenkrupp Ind Solutions Ag | Cement production plant and cement clinker production process |
-
2018
- 2018-09-10 DE DE102018215348.5A patent/DE102018215348A1/de not_active Ceased
-
2019
- 2019-09-06 CN CN201980058709.8A patent/CN112673226B/zh active Active
- 2019-09-06 US US17/269,015 patent/US12162808B2/en active Active
- 2019-09-06 EP EP19765713.3A patent/EP3850288A1/de active Pending
- 2019-09-06 WO PCT/EP2019/073868 patent/WO2020053100A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020053100A1 (de) | 2020-03-19 |
| CN112673226A (zh) | 2021-04-16 |
| US20210323864A1 (en) | 2021-10-21 |
| US12162808B2 (en) | 2024-12-10 |
| CN112673226B (zh) | 2023-03-21 |
| DE102018215348A1 (de) | 2020-03-12 |
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