CN212982803U - Kiln dust collecting and washing treatment system - Google Patents
Kiln dust collecting and washing treatment system Download PDFInfo
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- CN212982803U CN212982803U CN202020832152.9U CN202020832152U CN212982803U CN 212982803 U CN212982803 U CN 212982803U CN 202020832152 U CN202020832152 U CN 202020832152U CN 212982803 U CN212982803 U CN 212982803U
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Abstract
The utility model discloses a kiln dust collection washing processing system belongs to kiln dust processing technology field, include: preheater, dore furnace, cyclone, sack cleaner, kiln ash feed bin, one-level washing unit, sedimentation tank, first flocculation basin, first centrifuge, buffer tank, second grade washing unit, second centrifuge, second flocculation basin, third centrifuge, stoving unit, beneficial effect is: kiln ash collected through the bypass is let out the wind in to cement manufacture process carries out the washing processing to chlorine element in the kiln ash is got rid of, makes chlorine element in the kiln ash enter into the washing liquid, can also divide the salt to handle the washing liquid, with chlorine element resourceization, improved the utilization ratio of kiln ash resource greatly.
Description
Technical Field
The utility model relates to a kiln dust handles technical field, especially relates to a washing processing system is collected to kiln dust.
Background
With the rapid development of cement industry, the raw material and fuel resources necessary for cement production are becoming more and more intense, and thus, the use of some raw materials and fuels containing volatile substances such as potassium, sodium, chlorine, sulfur, etc. in the cement production process is a trend. Potassium in the raw material and fuel,The high sodium, chlorine and sulfur contents can bring serious consequences to the stable operation of a cement production line system, such as kiln tail skinning and influence on the quality of cement. Under the current conditions at home and abroad, an effective measure for solving the problem of discharge of potassium, sodium, chlorine, sulfur and other volatile substances in cement production raw materials and fuels is a bypass air release technology. Kiln dust collected by the bypass air discharge contains a large amount of chlorine salt components, and the kiln dust can have large impact on the quality of cement when being reused in a raw material system. The traditional disposal mode is that the addition amount should be strictly controlled when kiln tail dust removal ash and kiln ash collected by bypass air bleeding directly enter a cement product as a mixed material, the addition proportion is low for ensuring the quality and environmental safety of the cement product, and particularly for a cement kiln for performing collaborative disposal on hazardous waste, the disposal pressure of high-chlorine returned kiln ash is high. Because the returned kiln dust contains a large amount of Cl-In order to avoid affecting the cement production process, it must be pretreated to be largely recycled to the raw materials or directly into the cement product. A large number of researches show that the method for water washing pretreatment can effectively remove Cl in kiln dust-Avoid being caused by Cl-The problems of system balling and material blockage caused by overhigh height, and the like. Therefore, a kiln dust collecting and washing treatment system is needed to meet the above requirements.
SUMMERY OF THE UTILITY MODEL
According to the above-mentioned problem that exists among the prior art, now provide a kiln dust collection washing processing system, carry out the washing through the kiln dust of collecting to the bypass is let out the wind in the cement manufacture process and is handled to chlorine element to in the kiln dust carries out the desorption, makes chlorine element in the kiln dust enter into the washing liquid, can also divide the salt to the washing liquid and handle, with chlorine element resourceization, improved the utilization ratio of kiln dust resource greatly.
The technical scheme specifically comprises the following steps:
a kiln dust collecting and washing treatment system comprises:
a preheater, the preheater consisting of a multi-stage cyclone;
the decomposing furnace comprises a main flue gas outlet, the main flue gas outlet is positioned at the top of the decomposing furnace, the decomposing furnace is communicated with the preheater through the main flue gas outlet, the bottom of the decomposing furnace is communicated with the cement kiln, and the decomposing furnace also comprises a bypass air release opening;
the cyclone dust collector is connected with the bypass air outlet;
the bag-type dust collector is connected with the cyclone dust collector and is used for collecting kiln dust;
the kiln dust bin is connected with the bag-type dust collector and is used for storing the kiln dust collected by the bag-type dust collector;
the first-stage water washing unit is used for receiving kiln dust output from the kiln dust bin and a first medicament output from the medicament bin, and mixing the kiln dust and the first medicament with water;
the sedimentation tank is connected with the primary washing unit and used for receiving the solution discharged by the primary washing unit and carrying out solid-liquid separation on the solution;
the first flocculation tank is connected with the sedimentation tank and is used for receiving the liquid phase discharged by the sedimentation tank and performing flocculation sedimentation;
the first centrifuge is connected with the first flocculation tank and is used for mechanically separating the solution discharged from the first flocculation tank and sending the separated liquid phase into a water washing liquid treatment unit, and the water washing liquid treatment unit is used for performing salt separation treatment on the liquid phase separated by the first centrifuge;
the buffer tank is connected with a water supply tank and is used for supplying water for washing;
the secondary water washing unit is connected with the sedimentation tank and the first centrifugal machine and is used for receiving solid phases discharged by the sedimentation tank and the first centrifugal machine, and the secondary water washing unit receives the water for water washing discharged from the buffer tank;
the second centrifuge is connected with the secondary water washing unit and is used for receiving the solution discharged from the secondary water washing unit and carrying out mechanical separation;
the second flocculation tank is connected with the second centrifugal machine and is used for receiving the liquid phase discharged by the second centrifugal machine and performing flocculation sedimentation;
the third centrifugal machine is connected with the second flocculation tank and is used for mechanically separating the solution discharged from the second flocculation tank and sending the separated liquid phase into the primary washing unit;
and the drying unit is connected with the second centrifugal machine and the third centrifugal machine and is used for receiving the solid phase discharged by the second centrifugal machine and the third centrifugal machine and drying the solid phase to obtain the kiln dust after water washing treatment.
Preferably, the solution discharged from the first flocculation tank is added with a precipitation solution before entering the first centrifuge.
Preferably, wherein the precipitation liquid is calcium carbonate precipitation liquid.
Preferably, the water washing liquid processing unit generates reuse water after salt separation processing, and the buffer tank is connected with the water washing liquid processing unit and receives the reuse water.
Preferably, the method further comprises the following steps:
and the first PAM dosing bin is connected with the first flocculation tank and is used for adding a second medicament into the first flocculation tank.
Preferably, wherein, it is characterized by further comprising:
and the second PAM dosing bin is connected with the second flocculation tank and is used for adding a third medicament into the second flocculation tank.
Preferably, wherein the drying unit further comprises:
a screw feeder connecting the second centrifuge and the third centrifuge for receiving the solid phase discharged from the second centrifuge and the third centrifuge;
the coulter mixer is connected with the screw feeder and is used for receiving the solid phase discharged by the screw feeder;
and the drying device is connected with the coulter mixer and is used for drying the solid phase discharged by the screw feeder.
Preferably, the water washing liquid treatment unit carries out salt separation treatment by adopting RO reverse osmosis concentration and MVR evaporation.
Preferably, the drying unit further comprises a filter press connected between the coulter mixer and the drying device, and used for filter pressing the solid phase.
Preferably, wherein the filter press is a belt filter press or a plate and frame filter press.
The beneficial effects of the above technical scheme are that: the utility model provides a kiln dust collection washing processing system carries out the washing through the kiln dust of collecting to the bypass is let out the wind in the cement manufacture process and is handled to the chlorine element in the kiln dust is got rid of, makes the chlorine element in the kiln dust enter into the washing liquid, can also divide the salt to the washing liquid and handle, with chlorine element resourceization, has improved the utilization ratio of kiln dust resource greatly.
Drawings
FIG. 1 is a schematic structural diagram of a cement kiln dust collecting and washing treatment system according to a preferred embodiment of the present invention;
the reference numerals denote the description:
preheater (01), decomposing furnace (02), cyclone (03), sack cleaner (04), chimney (05), cement kiln (06), bypass air release (07), one-level washing unit (1), medicament storehouse (2), kiln ash feed bin (3), sedimentation tank (4), first flocculation basin (5), first centrifuge (6), washing water processing unit (7), buffer tank (8), feed water tank (9), second grade washing unit (10), second centrifuge (11), second flocculation basin (12), third centrifuge (13), drying unit (14), screw feeder (140), the colter mixer (141), drying device (142), calcium carbonate precipitation (15), first PAM adds medicine storehouse (16), second PAM adds medicine storehouse (17).
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
A kiln dust collecting and water washing treatment system, as shown in fig. 1, comprising:
the preheater 01 consists of a multi-stage cyclone;
the decomposing furnace 02 comprises a main flue gas exhaust port, the main flue gas exhaust port is positioned at the top of the decomposing furnace 02, the decomposing furnace 02 is communicated with the preheater 01 through the main flue gas exhaust port, the bottom of the decomposing furnace is communicated with the cement kiln 06, and the decomposing furnace 02 further comprises a bypass air release port 07;
the cyclone dust collector 03 is connected with the bypass air outlet 07;
the bag-type dust collector 04 is connected with the cyclone dust collector 03 and is used for collecting kiln dust;
the kiln dust bin is connected with the bag-type dust collector and is used for storing kiln dust collected by the bag-type dust collector;
the primary water washing unit 1 is used for receiving kiln dust output from the kiln dust bin 3 and a first medicament output from the medicament bin 2, and mixing the kiln dust and the first medicament with water;
the sedimentation tank 4 is connected with the primary water washing unit 1 and is used for receiving the solution discharged by the primary water washing unit 1 and carrying out solid-liquid separation on the solution;
the first flocculation tank 5 is connected with the sedimentation tank 4 and is used for receiving the liquid phase discharged from the sedimentation tank 4 and performing flocculation sedimentation;
the first centrifuge 6 is connected with the first flocculation tank 5 and is used for mechanically separating the solution discharged from the first flocculation tank 5 and sending the separated liquid phase into a water washing liquid processing unit 7, and the water washing liquid processing unit 7 is used for carrying out salt separation treatment on the liquid phase separated by the first centrifuge 6;
the buffer tank 8 is connected with a water supply tank 9 and is used for supplying washing water;
the secondary water washing unit 10 is connected with the sedimentation tank 4 and the first centrifuge 6 and is used for receiving solid phases discharged from the sedimentation tank 4 and the first centrifuge 6, and the secondary water washing unit 10 receives water for washing discharged from the buffer tank 8;
a second centrifuge 11 connected to the secondary water washing unit 10, for receiving the solution discharged from the secondary water washing unit 10 and performing mechanical separation;
the second flocculation tank 12 is connected with the second centrifuge 11 and is used for receiving the liquid phase discharged by the second centrifuge 11 and performing flocculation sedimentation;
a third centrifuge 13 connected to the second flocculation tank 12 for mechanically separating the solution discharged from the second flocculation tank 12 and sending the separated liquid phase to the primary washing unit 1;
and the drying unit 14 is connected with the second centrifugal machine 11 and the third centrifugal machine 13, and is used for receiving the solid phase discharged by the second centrifugal machine 11 and the third centrifugal machine 13 and drying the solid phase to obtain the kiln dust after the water washing treatment.
As a preferred embodiment, the hazardous waste has the characteristics of wide industrial sources, large production amount, various varieties, complex properties, unbalanced distribution of production sources and the like, and the environmental pollution and the health risks to human bodies caused by the hazardous waste become important environmental problems facing the world. The cement kiln 06 is disposed in coordination is an important mode of hazardous waste treatment, because harmful elements such as chlorine element, mercury of higher concentration are generally contained in hazardous waste, the cement kiln 06 is easily caused to be skinned and blocked, the disposal quantity is less, and the periodic dechlorination through the bypass air discharge can reduce the accumulation of pollution elements in the kiln, thereby ensuring the quality of cement products. The water washing treatment system disclosed in the embodiment can be used for washing the kiln dust collected by the bypass air discharge, and the treated kiln dust can be returned to a raw material system for cement production, so that the resource is recycled. As shown in fig. 1, a main flue gas outlet at the top of a decomposing furnace 02 is communicated with a multi-stage cyclone cylinder of a preheater 01, the bottom of the decomposing furnace 02 is communicated with a kiln tail smoke chamber of a cement kiln 06, and a bypass air outlet 07 of the decomposing furnace 02 is communicated with a cyclone dust collector 03 through a mixing chamber; the gas outlet of the cyclone dust collector 03 is communicated with a kiln tail waste heat boiler of the rotary kiln 06 of the cement kiln; the gas discharged from a bypass vent 07 at the bottom of the decomposing furnace 02 is mixed with cold wind and then cooled to about 400 ℃, finally, the dust is collected by the bag-type dust collector 04, the gas purified by the bag-type dust collector 04 is discharged into the atmosphere through the exhaust fan and the chimney 05, and the pollution elements in the cement kiln 06 are collected by the kiln dust collected by the bag-type dust collector 04. Bypass air outlet 07 needs to meet the requirement that the concentration of the pollution elements at the air extraction opening is as high as possible, and selects proper air speed, and the air outlet is easy to cause skin formation due to cooling and needs to be cleaned conveniently. The collected bypass air-discharging kiln dust is dechlorinated by a multistage countercurrent cement system and then enters the kiln again as a cement raw material to produce cement. The removed salt is refined and recycled.
Specifically, in this embodiment, the washing process of the kiln dust washing treatment system is divided into two stages, namely, the first-stage washing unit 1 and the second-stage washing unit 10, and the removal rate of chlorine in the collected kiln dust reaches 90% through the washing of the two-stage washing units.
In a specific embodiment of the present invention, the one-level washing unit 1 may be a washing tank, the water used in the washing tank is separated from the supernatant after the two-level washing, and specifically, the water used in the washing of the one-level washing unit 1 is separated from the liquid phase by the third centrifuge 13. The raw material of the first-stage water washing is from a kiln dust bin 3, wherein kiln dust in the kiln dust bin 3 is high-chlorine kiln dust collected in the cement production process in the forms of bypass air bleeding and the like. The corresponding first medicament is added into the kiln dust from the medicament bin 2 in the primary washing process, and the kiln dust, the washing water and the first medicament are mixed and then washed in the primary washing unit 1. And after the first-stage water washing is finished, discharging the mud-water mixture into the sedimentation tank 4, and performing solid-liquid separation on the sedimentation tank 4 through gravity sedimentation to ensure that the water content of a solid phase discharged from the sedimentation tank 4 is below 50%.
The supernatant separated by the sedimentation tank 4 is led to a first flocculation tank 5 for flocculation sedimentation, the liquid after flocculation sedimentation enters a first centrifuge 6 for mechanical separation, in the embodiment, the first centrifuge 6 adopts a horizontal screw centrifuge, the liquid phase after mechanical separation contains a large amount of chloride ions, and the liquid phase enters a washing liquid treatment unit 7 for next salt separation treatment, so that the chloride ions are extracted for resource recycling.
The solid phase separated by the sedimentation tank 4 enters a secondary water washing unit 10 for secondary water washing, wherein the water for washing in the secondary water washing unit 10 comes from a buffer tank 8. The mud-water mixture after the secondary washing enters a second centrifuge 11 for mechanical separation, in this embodiment, the second centrifuge 11 also adopts a horizontal screw centrifuge; the liquid phase separated by the second centrifuge 11 enters a second flocculation tank 12 for flocculation and sedimentation, and the solid phase directly enters a drying unit 14 for drying treatment to produce the dechlorination kiln dust after water washing. After the second flocculation tank 12 is flocculated and settled, the liquid is discharged into a third centrifuge 13 for mechanical separation, and the separated liquid phase is used as the water-washing solid phase of the primary water-washing unit 1 and then is led into a drying unit 14.
In a preferred embodiment of the present invention, the first flocculation tank 5 is filled with a sedimentation liquid.
In a preferred embodiment of the present invention, the precipitation liquid is calcium carbonate precipitation liquid 15 and/or sodium carbonate precipitation liquid.
Specifically, in this embodiment, a sodium carbonate solution with a concentration of 5% is prepared, and the sodium carbonate solution is added into the first flocculation tank 5 at a flow rate of 47L/h.
In a preferred embodiment of the present invention, the washing liquid treatment unit 7 generates recycled water after performing salt separation treatment, and the buffer tank 8 is connected to the washing liquid treatment unit 7 and receives the recycled water.
Specifically, in the present embodiment, the source of the water in the secondary water washing unit 10 is mainly the reuse water generated by the washing liquid treatment unit 7 in the buffer tank 8, and the reuse water is mainly distilled water, while the buffer tank 8 is connected to the water supply tank 9, and the industrial water in the water supply tank 9 is used as the make-up water.
In a preferred embodiment of the present invention, the present invention further comprises:
and the first PAM dosing bin 16 is connected with the first flocculation tank 5 and is used for adding a second medicament into the first flocculation tank 5.
In a preferred embodiment of the present invention, the present invention further comprises:
and the second PAM dosing bin 17 is connected with the second flocculation tank 12 and is used for adding a third medicament into the second flocculation tank 12.
Specifically, in this example, a PAM solution having a concentration of 0.1% was prepared, and the PAM solution was added to the first flocculation tank 5 and the second flocculation tank 12 at a flow rate of 0.625L/h.
In a preferred embodiment of the present invention, the drying unit 14 further includes:
a screw feeder 140 connected to the second centrifuge 11 and the third centrifuge 13, for receiving the solid phase discharged from the second centrifuge 11 and the third centrifuge 13;
a coulter mixer 141 connected with the screw feeder 140 and used for receiving the solid phase discharged by the screw feeder 140;
and a drying device 142 connected to the coulter mixer 141 for drying the solid phase discharged from the screw feeder 140.
In a preferred embodiment of the present invention, the washing liquid treatment unit 7 performs salt separation treatment by using RO reverse osmosis concentration and MVR evaporation.
Specifically, in this embodiment, because the MVR evaporator consumes a lot of energy, the RO reverse osmosis membrane is adopted, the softened and purified brine is pre-concentrated by the reverse osmosis membrane method, the concentrated brine is introduced into the MVR for further evaporation, and the reverse osmosis clean water is used as the secondary washing water. The effluent of the MVR evaporator is used as secondary washing water, and the salt water after MVR concentration is continuously evaporated, condensed and crystallized to achieve the purpose of separating salt.
In a preferred embodiment of the present invention, the drying unit 14 further comprises a filter press connected between the coulter mixer 141 and the drying device 142 for filter pressing the solid phase.
In a preferred embodiment of the present invention, the filter press is a belt filter press or a plate and frame filter press.
Specifically, in this embodiment, the belt-type sludge filter press is composed of a filter belt, a rolling cylinder, a filter belt tensioning system, a filter belt deviation adjusting system, a filter belt flushing system, and a filter belt driving system. When selecting the model, the following aspects should be considered: (1) a filter belt: the filter belt is required to have the characteristics of high tensile strength, bending resistance, acid and alkali resistance, temperature change resistance and the like, and meanwhile, the specific properties of the sludge are considered, and proper weaving textures are selected, so that the filter belt has good air permeability and sludge particle interception performance. (2) The offset adjustment system of the rolling cylinder comprises: typically by pneumatic means. (3) Tensioning system of the belt: the tension of the filter belt is controlled to be 0.3-0.7 MPa, and the common value is 0.3 MPa. (4) Controlling the belt speed: the requirements of sludge with different properties on the belt speed are different, namely a good belt speed control range exists for any specific sludge, and in the range, the dehydration system can ensure certain treatment capacity and obtain high-quality mud cakes. The belt filter press is little influenced by the fluctuation of sludge load, and has the characteristics of low sludge water content, stable work, less start consumption, relatively simple management and control, low requirement on the quality of operators and the like. The plate-and-frame filter press uses the pressure difference between two sides of filter cloth to force most of the water in the material to permeate the filter cloth and flow out of the filter body, and the material is blocked in the filter chamber to form filter cake, so as to attain the goal of filtering. Because of the bigger pressure difference between the two sides of the filter cloth in the filtering process, the filtering speed is improved, the water content of the filter cake is reduced, and the filter cloth is specially made, so that the filter liquor is pure and clear, and the filtering effect is better than that of a vacuum filter. The plate and frame filter press still has good effect even when processing the difficult filterable material, and easily does anticorrosive treatment, its simple structure, and the technology is mature. However, the plate and frame filter press works continuously and the removal of the mud cake is labor intensive.
The beneficial effects of the above technical scheme are that: the utility model provides a kiln dust collection washing processing system carries out the washing through the kiln dust of collecting to the bypass is let out the wind in the cement manufacture process and is handled to the chlorine element in the kiln dust is got rid of, makes the chlorine element in the kiln dust enter into the washing liquid, can also divide the salt to the washing liquid and handle, with chlorine element resourceization, has improved the utilization ratio of kiln dust resource greatly.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (8)
1. The utility model provides a kiln dust is collected washing processing system, is applied to cement kiln, its characterized in that includes:
a preheater, the preheater consisting of a multi-stage cyclone;
the decomposing furnace comprises a main flue gas outlet, the main flue gas outlet is positioned at the top of the decomposing furnace, the decomposing furnace is communicated with the preheater through the main flue gas outlet, the bottom of the decomposing furnace is communicated with the cement kiln, and the decomposing furnace also comprises a bypass air release opening;
the cyclone dust collector is connected with the bypass air outlet;
the bag-type dust collector is connected with the cyclone dust collector and is used for collecting kiln dust;
the kiln dust bin is connected with the bag-type dust collector and is used for storing the kiln dust collected by the bag-type dust collector;
the first-stage water washing unit is used for receiving kiln dust output from the kiln dust bin and a first medicament output from a medicament bin, and mixing the kiln dust and the first medicament with water;
the sedimentation tank is connected with the primary washing unit and used for receiving the solution discharged by the primary washing unit and carrying out solid-liquid separation on the solution;
the first flocculation tank is connected with the sedimentation tank and is used for receiving the liquid phase discharged by the sedimentation tank and performing flocculation sedimentation;
the first centrifuge is connected with the first flocculation tank and is used for mechanically separating the solution discharged from the first flocculation tank and sending the separated liquid phase into a water washing liquid treatment unit, and the water washing liquid treatment unit is used for performing salt separation treatment on the liquid phase separated by the first centrifuge;
the buffer tank is connected with a water supply tank and is used for supplying water for washing;
the secondary water washing unit is connected with the sedimentation tank and the first centrifugal machine and is used for receiving solid phases discharged by the sedimentation tank and the first centrifugal machine, and the secondary water washing unit receives the water for water washing discharged from the buffer tank;
the second centrifuge is connected with the secondary water washing unit and is used for receiving the solution discharged from the secondary water washing unit and carrying out mechanical separation;
the second flocculation tank is connected with the second centrifugal machine and is used for receiving the liquid phase discharged by the second centrifugal machine and performing flocculation sedimentation;
the third centrifugal machine is connected with the second flocculation tank and is used for mechanically separating the solution discharged from the second flocculation tank and sending the separated liquid phase into the primary washing unit;
and the drying unit is connected with the second centrifugal machine and the third centrifugal machine and is used for receiving the solid phase discharged by the second centrifugal machine and the third centrifugal machine and drying the solid phase to obtain the kiln dust after water washing treatment.
2. The kiln dust collecting and washing treatment system as claimed in claim 1, wherein the first flocculation tank is simultaneously added with the precipitation solution.
3. The kiln dust collecting and washing treatment system as claimed in claim 1, wherein the washing liquid treatment unit generates recycled water after salt separation treatment, and the buffer tank is connected with the washing liquid treatment unit and receives the recycled water.
4. The kiln dust collection and water washing treatment system as claimed in claim 1, further comprising:
and the first PAM dosing bin is connected with the first flocculation tank and is used for adding a PAM medicament into the first flocculation tank.
5. The kiln dust collection and water washing treatment system as claimed in claim 1, further comprising:
and the second PAM dosing bin is connected with the second flocculation tank and is used for adding a PAM medicament into the second flocculation tank.
6. The kiln dust collection and water washing treatment system as claimed in claim 1, wherein the drying unit further comprises:
a screw feeder connecting the second centrifuge and the third centrifuge for receiving the solid phase discharged from the second centrifuge and the third centrifuge;
the coulter mixer is connected with the screw feeder and is used for receiving the solid phase discharged by the screw feeder;
and the drying device is connected with the coulter mixer and is used for drying the solid phase discharged by the screw feeder.
7. The kiln dust collecting and washing treatment system as claimed in claim 6, wherein the drying unit further comprises a filter press connected between the coulter mixer and the drying device for filter pressing of the solid phase.
8. The kiln dust collecting and washing treatment system as claimed in claim 7, wherein the filter press is a belt filter press or a plate and frame filter press.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020832152.9U CN212982803U (en) | 2020-05-18 | 2020-05-18 | Kiln dust collecting and washing treatment system |
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| CN202020832152.9U CN212982803U (en) | 2020-05-18 | 2020-05-18 | Kiln dust collecting and washing treatment system |
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