CN111718138A - Novel dry-process cement clinker production device and process - Google Patents
Novel dry-process cement clinker production device and process Download PDFInfo
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- CN111718138A CN111718138A CN202010624344.5A CN202010624344A CN111718138A CN 111718138 A CN111718138 A CN 111718138A CN 202010624344 A CN202010624344 A CN 202010624344A CN 111718138 A CN111718138 A CN 111718138A
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- 239000004568 cement Substances 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000001035 drying Methods 0.000 title claims description 18
- 230000008569 process Effects 0.000 title abstract description 18
- 239000002245 particle Substances 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 238000001816 cooling Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000192 social effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- 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
- C04B7/475—Cooling ; Waste heat management using the waste heat, e.g. of the cooled clinker, in an other way than by simple heat exchange in the cement production line, e.g. for generating steam
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- 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
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a novel dry-method cement clinker production device and a process, which comprise the following steps: the first-stage heat exchanger is provided with a feed port, and the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are sequentially arranged; a first hoisting machine is arranged between the first-stage heat exchanger and the second-stage heat exchanger, and a second hoisting machine is arranged between the second-stage heat exchanger and the third-stage heat exchanger; a first crusher is arranged at a bottom inlet of the first hoister, a feed inlet of the first crusher is communicated with a discharge outlet of the primary heat exchanger, and a discharge outlet of the first crusher is communicated with the bottom inlet of the first hoister; a second crusher is arranged at a bottom inlet of the second elevator, a feed inlet of the second crusher is communicated with a discharge outlet of the secondary heat exchanger, and a discharge outlet of the second crusher is communicated with the bottom inlet of the second elevator; the invention has the beneficial effect of improving the recovery and utilization rate of the waste heat of the clinker, and is suitable for the field of cement production.
Description
Technical Field
The invention relates to the technical field of cement production, in particular to a novel dry-process cement clinker production device and a process.
Background
The cement clinker is a semi-finished product which is prepared by using limestone, siliceous raw materials and ferrous raw materials as main raw materials, preparing raw materials according to a proper proportion, burning until partial fusion and cooling.
In the existing cement clinker cooling process, a cooling channel of a cooling device is communicated from a high-temperature area to a low-temperature area, so that the air flow of the high-temperature area automatically flows into the low-temperature area due to high gas density of the low-temperature area, and the air flow of the low-temperature area flows backwards into the high-temperature area, so that the temperature of the high-temperature area is reduced; in the process, the problem of low heat recovery utilization rate of the cooling device exists, and the energy-saving and environment-friendly performance is poor.
Disclosure of Invention
Aiming at the defects in the related technology, the technical problem to be solved by the invention is as follows: provides a novel dry-method cement clinker production device and a novel dry-method cement clinker production process which can improve the recovery and utilization rate of clinker waste heat.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
novel dry process cement clinker production device includes: the first-stage heat exchanger is provided with a feed port, and the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are sequentially arranged; a first lifting machine is arranged between the primary heat exchanger and the secondary heat exchanger, and a second lifting machine is arranged between the secondary heat exchanger and the tertiary heat exchanger;
a first crusher is arranged at a bottom inlet of the first hoister, a feed inlet of the first crusher is communicated with a discharge outlet of the primary heat exchanger, a discharge outlet of the first crusher is communicated with a bottom inlet of the first hoister, and a top outlet of the first hoister is communicated with a feed inlet of the secondary heat exchanger; a second crusher is arranged at a bottom inlet of the second hoister, a feed inlet of the second crusher is communicated with a discharge outlet of the secondary heat exchanger, a discharge outlet of the second crusher is communicated with a bottom inlet of the second hoister, and a top outlet of the second hoister is communicated with a feed inlet of the tertiary heat exchanger; and a discharge port of the tertiary heat exchanger is connected with a conveyor, so that the conveyor conveys the low-temperature clinker output by the tertiary heat exchanger to a clinker warehouse for storage.
Preferably, the water outlet of the third-stage heat exchanger is connected with the water inlet of the second-stage heat exchanger through a second-stage conveying pipe, and the water-vapor mixing outlet of the second-stage heat exchanger is connected with the water inlet of the first-stage heat exchanger through a first-stage conveying pipe; and a steam outlet of the primary heat exchanger is connected with a steam turbine of an external low-pressure generator set through a steam conveying pipeline.
Preferably, a feeding groove is arranged above the primary heat exchanger, a bar gate is arranged at the bottom of the feeding groove, and the bar gate enables high-temperature clinker with the particle size less than 300mm to enter a feeding hole of the primary heat exchanger; and a discharge port is arranged on the feeding groove and above the bar gate, and the discharge port enables high-temperature clinker with the particle size of more than or equal to 300mm to be discharged from the discharge port.
Preferably, the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger are all provided with a feeding valve and a discharging valve, and after the feeding valve and the discharging valve are closed, the first-stage heat exchanger, the second-stage heat exchanger and the third-stage heat exchanger all form independent spaces.
Preferably, the first crusher is a single rotor impact crusher; the second crusher is a double-roller crusher, or a rotary cone crusher, or an impact crusher.
Preferably, the conveyor is a large-angle conveyor or a chain-link vertical conveyor.
Preferably, the water and steam heat exchange pipelines of the primary heat exchanger, the secondary heat exchanger and the tertiary heat exchanger are annular pipelines, or latticed pipelines, or spiral vertical pipes, and the annular pipelines and the latticed pipelines are arranged in a star shape.
Correspondingly, the novel dry-process cement clinker production process comprises the following steps: cooling the high-temperature clinker at 1200 ℃ to 500 ℃ by a primary heat exchanger; crushing the clinker at 500 ℃ into medium-particle clinker with the particle size of 30mm in a first crusher; the first elevator sends the medium particle clinker to the secondary heat exchanger; cooling the medium particle clinker to 200 ℃ by a secondary heat exchanger; the clinker at 200 ℃ is crushed into small-particle clinker with the particle size less than or equal to 10mm in a second crusher; the second hoister sends the small-particle clinker to the third-stage heat exchanger; the small particle clinker is cooled to 80 ℃ by the third-stage heat exchanger; and (4) conveying the clinker at the temperature of 80 ℃ from a discharge port of the tertiary heat exchanger to a clinker storage through a conveyor.
Preferably, the novel dry-method cement clinker production process further comprises: softened water at 40 ℃ enters the third-stage heat exchanger through a water inlet of the third-stage heat exchanger, and forms high-temperature saturated vapor at 315 ℃ after sequentially passing through the second-stage conveying pipe, the second-stage heat exchanger, the first-stage conveying pipe and the first-stage heat exchanger; and after the high-temperature saturated water vapor at the temperature of 315 ℃ is discharged from a steam outlet of the primary heat exchanger, the high-temperature saturated water vapor is connected with a steam turbine of an external low-pressure generator set through a steam conveying pipeline.
Preferably, the novel dry-method cement clinker production process further comprises: the high-temperature clinker entering the primary heat exchanger of the feeding chute is screened through a bar gate arranged on the feeding chute, so that the high-temperature clinker with the grain size less than 300mm enters the feeding port of the primary heat exchanger, and the high-temperature clinker with the grain size more than or equal to 300mm is discharged from the discharging port.
The invention has the beneficial technical effects that:
1. when the novel dry-method cement clinker production device and the novel dry-method cement clinker production process are used, 1200 ℃ high-temperature clinker enters a feed inlet of a primary heat exchanger, is cooled to 500 ℃ after heat exchange is completed in the primary heat exchanger, is discharged from a discharge port of the primary heat exchanger at 500 ℃, enters a first crusher and is crushed to form medium-particle clinker with the particle size of 30 mm; the medium particle clinker discharged from the first crusher enters a feeding hole of the secondary heat exchanger through a first elevator; after heat exchange of the medium-particle clinker is completed in the secondary heat exchanger, cooling to 200 ℃, discharging the clinker at 200 ℃ from a discharge port of the secondary heat exchanger, and crushing in a second crusher to form small-particle clinker with the particle size of less than or equal to 10 mm; the small particle clinker discharged from the second crusher enters a feed inlet of the third-stage heat exchanger through a second elevator; after finishing heat exchange in the third-stage heat exchanger, cooling to 80 ℃, discharging from a discharge port of the third-stage heat exchanger, and conveying to a clinker warehouse for storage through a conveyor; in the process, a multistage heat exchange mode is adopted, and the high-temperature clinker can be subjected to graded heat exchange, so that the heat exchange of the high-temperature clinker is more sufficient and uniform, and the heat exchange efficiency is improved.
2. The novel dry-method cement clinker production device and the process can fully play the role of high-temperature clinker waste heat, when in use, softened water at 40 ℃ enters the tertiary heat exchanger from the water inlet at the lower part of the tertiary heat exchanger, and is guided into the water inlet at the lower part of the secondary heat exchanger through the secondary conveying pipe from the water outlet at the upper part of the tertiary heat exchanger after being heated to 95 ℃ in the heat exchange process; after waste heat is absorbed in the secondary heat exchanger to form a water-vapor mixture, the mixture is discharged from a water-vapor mixing outlet at the upper part of the secondary heat exchanger and enters the primary heat exchanger through a primary conveying pipe; in the heat exchange process, generating 315 ℃ saturated steam under the action of high-temperature clinker, discharging the saturated steam from a steam outlet at the upper part of the primary heat exchanger, and conveying the saturated steam to a steam turbine of a low-pressure generator set through a steam conveying pipeline for power generation; in the embodiment, the high-temperature clinker pure waste heat can be used for generating power, fuel is not consumed, resources are protected, environmental pollution is reduced, clinker cooling and clean power generation can be realized, energy conservation and consumption reduction of upstream and downstream processes are considered, production efficiency is improved, and the method has the social effects of improving enterprise economic benefits, protecting the environment and saving resources.
3. According to the invention, the feeding valve and the discharging valve are closed, so that the primary heat exchanger, the secondary heat exchanger and the tertiary heat exchanger form independent spaces, and the maintenance and the overhaul are convenient.
Drawings
FIG. 1 is a schematic structural view of the novel dry process cement clinker production plant of the present invention;
FIG. 2 is a flow chart of a novel dry process cement clinker production process provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a novel dry process cement clinker production process provided in example two of the present invention;
FIG. 4 is a flow chart of a novel dry process cement clinker production process provided by the third embodiment of the present invention;
in the figure: 1 is the one-level heat exchanger, 2 is the second grade heat exchanger, 3 is tertiary heat exchanger, 4 is first lifting machine, 5 is the second lifting machine, 6 is first breaker, 7 is the second breaker, 8 is the conveyer, 9 is the second grade conveyer pipe, 10 is the one-level conveyer pipe, 11 is steam conveying pipeline, 12 is the steam turbine, 13 is the feed chute, 14 is the bin outlet, 15 is the bar gate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
The present invention cools the high temperature clinker by means of the multi-stage heat exchanger to improve the cooling rate of the cement clinker, the number of the multi-stage heat exchanger in the present invention can be multiple, and for convenience of understanding and explanation, the present embodiment is explained by using three heat exchangers.
An embodiment of the present invention is described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic structural diagram of a novel dry method cement clinker production device provided by the invention, and as shown in fig. 1, the novel dry method cement clinker production device comprises: the heat exchanger comprises a primary heat exchanger 1 with a feed inlet, wherein the primary heat exchanger 1, a secondary heat exchanger 2 and a tertiary heat exchanger 3 are sequentially arranged;
a first lifting machine 4 is arranged between the primary heat exchanger 1 and the secondary heat exchanger 2, and a second lifting machine 5 is arranged between the secondary heat exchanger 2 and the tertiary heat exchanger 3;
a first crusher 6 is arranged at a bottom inlet of the first lifter 4, a feed inlet of the first crusher 6 is communicated with a discharge outlet of the primary heat exchanger 1, a discharge outlet of the first crusher 6 is communicated with a bottom inlet of the first lifter 4, and a top outlet of the first lifter 4 is communicated with a feed inlet of the secondary heat exchanger 2;
a second crusher 7 is arranged at a bottom inlet of the second hoister 5, a feed inlet of the second crusher 7 is communicated with a discharge outlet of the secondary heat exchanger 2, a discharge outlet of the second crusher 7 is communicated with a bottom inlet of the second hoister 5, and a top outlet of the second hoister 5 is communicated with a feed inlet of the tertiary heat exchanger 3;
and a discharge hole of the tertiary heat exchanger 3 is connected with a conveyor 8, so that the conveyor 8 conveys the low-temperature clinker output by the tertiary heat exchanger 3 to a clinker warehouse for storage.
In particular, the first crusher 6 may be a single rotor impact crusher; the second crusher 7 may be a double roll crusher; the conveyor 8 can be a large-angle conveyor or a chain plate vertical conveyor; in the embodiment, the first crusher 6 and the second crusher 7 are arranged, and a two-stage crushing mode is adopted, so that the effect of a crushing bin of the cement grinding machine is achieved, the grinding capacity of the cement grinding machine is fully exerted, the yield of the grinding machine is improved, and the cement step-by-step power consumption is reduced.
Furthermore, the water and steam heat exchange pipelines of the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3 are annular pipelines, or latticed pipelines, or spiral vertical pipes, and the annular pipelines and the latticed pipelines are arranged in a star shape, so that the heat dissipation rate of clinker is improved, the heat absorption process of water and steam is accelerated, and the heat utilization maximization is ensured.
Fig. 2 is a flow chart of a novel dry-process cement clinker production process provided by a first embodiment of the present invention, and as shown in fig. 2, the present invention also provides a novel dry-process cement clinker production process, which comprises the following steps:
cooling the high-temperature clinker at 1200 ℃ to 500 ℃ by a primary heat exchanger;
crushing the clinker at 500 ℃ into medium-particle clinker with the particle size of 30mm in a first crusher;
the first elevator sends the medium particle clinker to the secondary heat exchanger;
cooling the medium particle clinker to 200 ℃ by a secondary heat exchanger;
the clinker at 200 ℃ is crushed into small-particle clinker with the particle size less than or equal to 10mm in a second crusher;
the second hoister sends the small-particle clinker to the third-stage heat exchanger;
the small particle clinker is cooled to 80 ℃ by the third-stage heat exchanger;
and (4) conveying the clinker at the temperature of 80 ℃ from a discharge port of the tertiary heat exchanger to a clinker storage through a conveyor.
When the novel dry-method cement clinker production device and the novel dry-method cement clinker production process provided by the embodiment are used, after high-temperature clinker at 1200 ℃ enters the feeding hole of the primary heat exchanger 1, heat exchange is completed in the primary heat exchanger 1, the clinker is cooled to 500 ℃, the clinker at 500 ℃ is discharged from the discharging hole of the primary heat exchanger 1 and enters the first crusher 6 to be crushed, and medium-particle clinker with the particle size of 30mm is formed; the medium particle clinker discharged from the first crusher 6 enters a feeding hole of the secondary heat exchanger 2 through the first elevator 4; after heat exchange of the medium-particle clinker is completed in the secondary heat exchanger 2, the medium-particle clinker is cooled to 200 ℃, the clinker at the temperature of 200 ℃ is discharged from a discharge hole of the secondary heat exchanger 2 and enters a second crusher 7 to be crushed, and small-particle clinker with the particle size of less than or equal to 10mm is formed; the small particle clinker discharged from the second crusher 7 enters a feeding hole of the third-stage heat exchanger 3 through a second elevator 5; after finishing heat exchange in the third-stage heat exchanger 3, the small-particle clinker is cooled to 80 ℃, discharged from a discharge port of the third-stage heat exchanger 3 and conveyed to a clinker warehouse for storage through a conveyor 8; in the process, a multistage heat exchange mode is adopted, and the high-temperature clinker can be subjected to graded heat exchange, so that the heat exchange of the high-temperature clinker is more sufficient and uniform, and the heat exchange efficiency is improved.
Example two
On the basis of the first embodiment, the novel dry-method cement clinker production device is characterized in that a water outlet of the tertiary heat exchanger 3 is connected with a water inlet of the secondary heat exchanger 2 through a secondary conveying pipe 9, and a water-vapor mixing outlet of the secondary heat exchanger 2 is connected with a water inlet of the primary heat exchanger 1 through a primary conveying pipe 10;
and a steam outlet of the primary heat exchanger 1 is connected with a steam turbine 12 of an external low-pressure generator set through a steam conveying pipeline 11.
Fig. 3 is a flow chart of a novel dry method cement clinker production process provided by the second embodiment of the present invention, and as shown in fig. 3, the novel dry method cement clinker production process further includes: softened water at 40 ℃ enters the third-stage heat exchanger through a water inlet of the third-stage heat exchanger, and forms high-temperature saturated vapor at 315 ℃ after sequentially passing through the second-stage conveying pipe, the second-stage heat exchanger, the first-stage conveying pipe and the first-stage heat exchanger; and after the high-temperature saturated water vapor at the temperature of 315 ℃ is discharged from a steam outlet of the primary heat exchanger, the high-temperature saturated water vapor is connected with a steam turbine of an external low-pressure generator set through a steam conveying pipeline.
The novel dry-method cement clinker production device and the process provided by the embodiment can fully play the role of high-temperature clinker waste heat, when in use, softened water at 40 ℃ enters the tertiary heat exchanger 3 from a water inlet at the lower part of the tertiary heat exchanger 3, and is guided into a water inlet at the lower part of the secondary heat exchanger 2 from a water outlet at the upper part of the tertiary heat exchanger 3 through the secondary conveying pipe 9 after being heated to 95 ℃ in the heat exchange process; after waste heat is absorbed in the secondary heat exchanger 2 to form a water-vapor mixture, the mixture is discharged from a water-vapor mixing outlet at the upper part of the secondary heat exchanger 2 and enters the primary heat exchanger 1 through a primary conveying pipe 10; in the heat exchange process, under the action of high-temperature clinker, generating saturated water vapor at 315 ℃, discharging the saturated water vapor from a vapor outlet at the upper part of the primary heat exchanger 1, and conveying the saturated water vapor to a steam turbine 12 of a low-pressure generator set through a steam conveying pipeline 11 for power generation; in the embodiment, the high-temperature clinker pure waste heat can be used for generating power, fuel is not consumed, resources are protected, environmental pollution is reduced, clinker cooling and clean power generation can be realized, energy conservation and consumption reduction of upstream and downstream processes are considered, production efficiency is improved, and the method has the social effects of improving enterprise economic benefits, protecting the environment and saving resources.
EXAMPLE III
On the basis of the first embodiment, the novel dry-method cement clinker production device is characterized in that a feeding groove 13 is arranged above the primary heat exchanger 1, a bar gate 15 is arranged at the bottom of the feeding groove 13, and the bar gate 15 enables high-temperature clinker with the particle size less than 300mm to enter a feeding hole of the primary heat exchanger 1;
a discharge opening 14 is arranged above the bar gate 15 on the feeding chute 13, and the discharge opening 14 enables high-temperature clinker with the grain diameter larger than or equal to 300mm to be discharged from the discharge opening 14.
FIG. 4 is a flow chart of a novel dry process cement clinker production process provided by the third embodiment of the present invention; the novel dry-process cement clinker production process is characterized by comprising the following steps of: further comprising:
the high-temperature clinker entering the primary heat exchanger of the feeding chute is screened through a bar gate arranged on the feeding chute, so that the high-temperature clinker with the grain size less than 300mm enters the feeding port of the primary heat exchanger, and the high-temperature clinker with the grain size more than or equal to 300mm is discharged from the discharging port.
The rod gate in this embodiment can realize the flow control of large granule clinker.
Example four
On the basis of the first embodiment, the novel dry-method cement clinker production device is characterized in that the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3 are respectively provided with a feeding valve and a discharging valve, and after the feeding valve and the discharging valve are closed, the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3 form independent spaces.
When the heat exchanger is used, the feeding valve and the discharging valve are closed, so that the first-stage heat exchanger 1, the second-stage heat exchanger 2 and the third-stage heat exchanger 3 form independent spaces, and maintenance and overhaul are facilitated.
In the whole device and the whole process, the countercurrent heat exchange is adopted for the solid, the liquid and the steam, so that the heat exchange efficiency is improved.
In addition, in order to improve the heat efficiency of the system, the primary heat exchanger 1, the secondary heat exchanger 2 and the tertiary heat exchanger 3 can be inlaid with temperature-resistant and wear-resistant materials with different properties and purposes according to different clinker temperatures.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the method, apparatus and system described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the module described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. In addition, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. The above-described system embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, and for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. Novel dry process cement clinker production device, its characterized in that: the method comprises the following steps: the heat exchanger comprises a primary heat exchanger (1) with a feeding hole, wherein the primary heat exchanger (1), a secondary heat exchanger (2) and a tertiary heat exchanger (3) are sequentially arranged;
a first hoisting machine (4) is arranged between the primary heat exchanger (1) and the secondary heat exchanger (2), and a second hoisting machine (5) is arranged between the secondary heat exchanger (2) and the tertiary heat exchanger (3);
a first crusher (6) is arranged at a bottom inlet of the first lifter (4), a feed inlet of the first crusher (6) is communicated with a discharge outlet of the primary heat exchanger (1), a discharge outlet of the first crusher (6) is communicated with a bottom inlet of the first lifter (4), and a top outlet of the first lifter (4) is communicated with a feed inlet of the secondary heat exchanger (2);
a second crusher (7) is arranged at a bottom inlet of the second hoister (5), a feed inlet of the second crusher (7) is communicated with a discharge outlet of the secondary heat exchanger (2), a discharge outlet of the second crusher (7) is communicated with a bottom inlet of the second hoister (5), and a top outlet of the second hoister (5) is communicated with a feed inlet of the tertiary heat exchanger (3);
and a discharge hole of the tertiary heat exchanger (3) is connected with a conveyor (8) so that the conveyor (8) can convey the low-temperature clinker output by the tertiary heat exchanger (3) to a clinker warehouse for storage.
2. The new dry cement clinker production plant according to claim 1, characterized in that: the water outlet of the third-stage heat exchanger (3) is connected with the water inlet of the second-stage heat exchanger (2) through a second-stage conveying pipe (9), and the water-vapor mixing outlet of the second-stage heat exchanger (2) is connected with the water inlet of the first-stage heat exchanger (1) through a first-stage conveying pipe (10);
and a steam outlet of the primary heat exchanger (1) is connected with a steam turbine (12) of an external low-pressure generator set through a steam conveying pipeline (11).
3. The new dry cement clinker production plant according to claim 1, characterized in that: a feeding groove (13) is arranged above the primary heat exchanger (1), a bar gate (15) is arranged at the bottom of the feeding groove (13), and the bar gate (15) enables high-temperature clinker with the particle size less than 300mm to enter a feeding hole of the primary heat exchanger (1);
a discharge opening (14) is arranged on the feeding groove (13) and above the bar gate (15), and the discharge opening (14) enables high-temperature clinker with the particle size of more than or equal to 300mm to be discharged from the discharge opening (14).
4. A new type of dry process cement clinker production plant according to claim 1, characterized in that: all be provided with feed valve and ejection of compact valve on one-level heat exchanger (1), second grade heat exchanger (2) and tertiary heat exchanger (3), close behind feed valve and the ejection of compact valve, make one-level heat exchanger (1), second grade heat exchanger (2), tertiary heat exchanger (3) all form independent space.
5. The new dry cement clinker production plant according to claim 1, characterized in that: the first crusher (6) is a single-rotor impact crusher; the second crusher (7) is a double-roller crusher, or a gyratory cone crusher, or an impact crusher.
6. The new dry cement clinker production plant according to claim 1, characterized in that: the conveyor (8) is a large-angle conveyor or a chain plate vertical conveyor.
7. The new dry cement clinker production plant according to claim 1, characterized in that: the water and steam heat exchange pipelines of the first-stage heat exchanger (1), the second-stage heat exchanger (2) and the third-stage heat exchanger (3) are annular pipelines, or latticed pipelines, or spiral vertical pipes, and the annular pipelines and the latticed pipelines are arranged in a star shape.
8. The novel dry-process cement clinker production process is characterized by comprising the following steps of: the method comprises the following steps:
cooling the high-temperature clinker at 1200 ℃ to 500 ℃ by a primary heat exchanger;
crushing the clinker at 500 ℃ into medium-particle clinker with the particle size of 30mm in a first crusher;
the first elevator sends the medium particle clinker to the secondary heat exchanger;
cooling the medium particle clinker to 200 ℃ by a secondary heat exchanger;
the clinker at 200 ℃ is crushed into small-particle clinker with the particle size less than or equal to 10mm in a second crusher;
the second hoister sends the small-particle clinker to the third-stage heat exchanger;
the small particle clinker is cooled to 80 ℃ by the third-stage heat exchanger;
and (4) conveying the clinker at the temperature of 80 ℃ from a discharge port of the tertiary heat exchanger to a clinker storage through a conveyor.
9. The novel dry process cement clinker production process according to claim 8, characterized in that: further comprising:
softened water at 40 ℃ enters the third-stage heat exchanger through a water inlet of the third-stage heat exchanger, and forms high-temperature saturated vapor at 315 ℃ after sequentially passing through the second-stage conveying pipe, the second-stage heat exchanger, the first-stage conveying pipe and the first-stage heat exchanger;
and after the high-temperature saturated water vapor at the temperature of 315 ℃ is discharged from a steam outlet of the primary heat exchanger, the high-temperature saturated water vapor is connected with a steam turbine of an external low-pressure generator set through a steam conveying pipeline.
10. The novel dry process cement clinker production process according to claim 8, characterized in that: further comprising:
the high-temperature clinker entering the primary heat exchanger of the feeding chute is screened through a bar gate arranged on the feeding chute, so that the high-temperature clinker with the grain size less than 300mm enters the feeding port of the primary heat exchanger, and the high-temperature clinker with the grain size more than or equal to 300mm is discharged from the discharging port.
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