CN107673641A

CN107673641A - The system and method for preparing clinker

Info

Publication number: CN107673641A
Application number: CN201710828872.0A
Authority: CN
Inventors: 孙辉; 边妙莲; 马冬阳; 陈士朝; 吴道洪
Original assignee: Jiangsu Province Metallurgical Design Institute Co Ltd
Current assignee: Jiangsu Province Metallurgical Design Institute Co Ltd
Priority date: 2017-09-14
Filing date: 2017-09-14
Publication date: 2018-02-09

Abstract

The invention discloses a kind of system and method for preparing clinker, the system includes：Dehydration device, carbide slag exports after having carbide slag entrance and dehydration；Drying crusher, there is carbide slag entrance and drying carbide slag particle outlet after dehydration；Mixing arrangement, there is siliceous corrigent entrance, aluminum corrigent entrance, irony corrigent entrance and mixing correction material outlet；Fine mill, there is mixing correction material inlet and mixing correction powder outlet；First preheating device, there is material outlet after mixing correction powder entrance and the first preheating；Decomposer, there are drying carbide slag particle entrance and decomposing materials to export；Second preheating device, there is material outlet after material inlet and the second heat exchange；Calciner plant, there is material inlet and Cement Clinker outlet after the second heat exchange；Cooling device, there is Cement Clinker entrance and clinker to export.

Description

The system and method for preparing clinker

Technical field

The invention belongs to field of cement production, and specifically, the present invention relates to the system and method for preparing clinker.

Background technology

Carbide slag is the residue after calcium carbide hydrolysis, and main component is Ca (OH)₂.2015, the whole nation about produced 25,000,000 tons Calcium carbide, 1.2~1.5 tons of carbide slags are about produced after being hydrolyzed by calcium carbide per ton and are calculated, about 3000~37,500,000 tons of carbide slag can be produced. In recent years, accumulation calcium carbide quantity of slag in China's crosses hundred million tons, is stacked and not only occupies a large amount of soils, moisture oozes in carbide slag slurry Penetrate into underground water, cause soil alkalization and the problems such as water resource pollution.Carbide slag through long-time stack air-dry after to the wind Airborne dust is easily played, great threat is brought to surrounding environment.

Therefore, the technology of existing processing carbide slag is further improved.

The content of the invention

It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose a kind of system and method for preparing clinker.The system substitutes lime stone with carbide slag and prepares cement Clinker, and coal dust is substituted with fuel gas with calcination process decomposing, while make full use of the sensible heat of system institute aerogenesis body, pole The big energy consumption for reducing system and the production cost of clinker.

In one aspect of the invention, the present invention proposes a kind of system for preparing clinker, according to the reality of the present invention Example is applied, the system includes：

Dehydration device, carbide slag exports after the dehydration device has carbide slag entrance and dehydration；

Drying crusher, the drying crusher have carbide slag entrance and drying carbide slag particle outlet after dehydration, institute Carbide slag entrance is connected with carbide slag outlet after the dehydration after stating dehydration；

Mixing arrangement, the mixing arrangement have siliceous corrigent entrance, aluminum corrigent entrance, irony corrigent entrance Material outlet is corrected with mixing；

Fine mill, the fine mill have mixing correction material inlet and mixing correction powder outlet, the mixing Correction material inlet is connected with the mixing correction material outlet；

First preheating device, first preheating device have mixing correction powder entrance, the first pre- hot gas inlet, first Gas outlet and material outlet after the first preheating, the mixing correction powder entrance mix correction powder outlet phase with described after heat exchange Even；

Decomposer, the decomposer have drying carbide slag particle entrance, the first fuel gas entrance, first combustion-supporting Gas exports after gas access, decomposing materials outlet and burning, the drying carbide slag particle entrance and the drying carbide slag Grain outlet is connected；

Second preheating device, second preheating device have gas after material inlet, the second pre- hot gas inlet, the second heat exchange Material outlet behind outlet and the second heat exchange, material outlet and the analyte after the material inlet preheats with described first respectively Material outlet is connected, and the second pre- hot gas inlet is connected with gas outlet after the burning, gas outlet and institute after second heat exchange The first pre- hot gas inlet is stated to be connected；

Calciner plant, the calciner plant have material inlet after the second heat exchange, the second fuel gas entrance, second combustion-supporting Gas outlet and Cement Clinker outlet after gas access, reaction, material inlet and the described second heat exchange after second heat exchange Material outlet is connected afterwards, and gas is exported and is connected with the decomposer after the reaction；

Cooling device, there is the first cooling section, the second cooling section and the 3rd cooling section successively in the cooling device, it is described First cold section has Cement Clinker entrance, the first gas at normal temperature entrance and first gas outlet, the high-temperature cement ripe Material entrance is connected with Cement Clinker outlet, and the first gas outlet is connected with the first combustion-supporting gas entrance, There is second cold section the second gas at normal temperature entrance and second gas to export, and the second gas outlet helps with described second Combustion gas access is connected, and the 3rd cooling section has the 3rd gas at normal temperature entrance, third gas outlet and clinker outlet.

The system for preparing clinker according to embodiments of the present invention, substitute lime stone by using carbide slag and prepare cement Clinker, the exploitation of limestone resource is saved, reduced the discharge of greenhouse gases, and because the decomposition temperature of carbide slag is compared with lime Stone is low, has saved the energy consumption in clinker production process and has improved productivity ratio；And by the way that mixing correction powder is delivered to First preheating device carries out the pre-heat treatment, and drying carbide slag particle is fed directly to be decomposed in decomposer, then by the Material delivers to the second preheating device together with decomposing materials and carries out the pre-heat treatment after one preheating, reduces preheating device and decomposes dress The operating load put, the stable operation of preheating device is promoted, improve the decomposition efficiency of drying carbide slag particle, further It ensure that the high-efficiency and continuous operation of preheating device and decomposer；The other technique substitutes coal dust as decomposition using fuel gas The fuel of device and calciner plant, coal dust resource is saved, it is unstable to avoid the preheating device operation that coal dust firing may be brought Surely unsafe factor is waited；And pass through the step profit to the first gas after cooling down high-temperature clinker and the sensible heat of second gas With realizing the efficient utilization of the energy, greatly reduce energy consumption, saved coal dust resource, reduce the production of clinker Cost.

In addition, the system according to the above embodiment of the present invention for preparing clinker can also have technology additional as follows Feature：

In some embodiments of the invention, the calciner plant is rotary kiln, it is described second heat exchange after material inlet and Gas outlet is at the kiln tail of the rotary kiln after the reaction, the second fuel gas entrance, second combustion-supporting gas Entrance and Cement Clinker outlet are at the kiln hood of the rotary kiln.Thus, the energy consumption of saving system is advantageous to.

In some embodiments of the invention, the cooling device is grate-cooler.

In some embodiments of the invention, gas is connected with the drying crusher after first heat exchange.Thus, can enter One step improves the heat utilization efficiency of system.

In some embodiments of the invention, the drying crusher is connected with the mixing arrangement.Thus, can be further The heat utilization efficiency of raising system.

In some embodiments of the invention, there are multiple first fuel gas entrances and more on the decomposer The individual first combustion-supporting gas entrance, and the multiple first fuel gas entrance and the multiple first combustion-supporting gas entrance exist In the same level vertical with the decomposer axis direction, and in the side wall below the decomposer.Thus, Be advantageous to improve the decomposition efficiency in decomposer.

In some embodiments of the invention, on the axis direction of the decomposer, the drying carbide slag particle Entrance is where the first fuel gas entrance and the first combustion-supporting gas entrance at the top 0.5-1.5m of plane.By This, can further improve the decomposition efficiency of drying carbide slag particle.

In another aspect of the invention, the present invention proposes a kind of prepares water using the above-mentioned system for preparing clinker The method of mud clinker, according to an embodiment of the invention, this method includes：

(1) carbide slag is supplied to the dehydration device and carries out dewater treatment, so as to carbide slag after being dehydrated；

(2) carbide slag after the dehydration is supplied and drying break process is carried out into the drying crusher, to obtain Drying carbide slag particle；

(3) siliceous corrigent, aluminum corrigent and irony corrigent are supplied and carried out into the mixing arrangement at mixing Reason, to obtain mixing correction material；

(4) mixing is corrected into material to supply to the levigate processing of corrigent fine mill progress, to be mixed Close correction powder；

(5) mixing is corrected into powder to supply into first preheating device, entered in the presence of the first pre- hot gas Row the pre-heat treatment, to obtain after the first heat exchange material after gas and the first preheating；

(6) the drying carbide slag particle is supplied into the decomposer, it is combustion-supporting in the first fuel gas and first Resolution process is carried out in the presence of gas, to obtain gas after decomposing materials and burning；

(7) material after the decomposing materials and first preheating is supplied into second preheating device, described The pre-heat treatment is carried out after burning in the presence of gas, to obtain after the second heat exchange gas after material and the second heat exchange, and by described the Gas supplies after two heat exchange uses into step (5) as the described first pre- hot gas；

(8) material after the described second heat exchange is supplied into the calciner plant, it is combustion-supporting in the second fuel gas and second Gas effect is lower to carry out calcination processing, to obtain gas after Cement Clinker and reaction, and by gas after the reaction supply to The decomposer in step (6)；

(9) normal temperature air and the Cement Clinker are supplied into the cooling device and carry out sub-sectional cooling processing, To obtain first gas, second gas, third gas and clinker, and the first gas is supplied into step (6) Used as first combustion-supporting gas, the second gas is supplied to be made into step (8) as second combustion-supporting gas With.

The method for preparing clinker according to embodiments of the present invention, substitute lime stone by using carbide slag and prepare cement Clinker, the exploitation of limestone resource is saved, reduced the discharge of greenhouse gases, and because the decomposition temperature of carbide slag is compared with lime Stone is low, has saved the energy consumption in clinker production process and has improved productivity ratio；And by the way that mixing correction powder is delivered to First preheating device carries out the pre-heat treatment, and drying carbide slag particle is fed directly to be decomposed in decomposer, then by the Material delivers to the second preheating device together with decomposing materials and carries out the pre-heat treatment after one preheating, reduces preheating device and decomposes dress The operating load put, the stable operation of preheating device is promoted, improve the decomposition efficiency of drying carbide slag particle, further It ensure that the high-efficiency and continuous operation of preheating device and decomposer；The other technique substitutes coal dust as decomposition using fuel gas The fuel of device and calciner plant, coal dust resource is saved, it is unstable to avoid the preheating device operation that coal dust firing may be brought Surely unsafe factor is waited；And pass through the step profit to the first gas after cooling down high-temperature clinker and the sensible heat of second gas With realizing the efficient utilization of the energy, greatly reduce energy consumption, saved coal dust resource, reduce the production of clinker Cost.

In addition, the method according to the above embodiment of the present invention for preparing clinker can also have technology additional as follows Feature：

In some embodiments of the invention, the above-mentioned method for preparing clinker further comprises：(10) by step (5) In after obtained first heat exchange gas supply to the drying crusher in step (2) and used as drying source.Thus, It can further improve the heat utilization efficiency of whole technique.

In some embodiments of the invention, the above-mentioned method for preparing clinker further comprises：(11) by step (10) drying source after the heat exchange obtained supplies to be used into step (3) as dried medium.Thus, can further improve whole The heat utilization efficiency of individual technique.

In some embodiments of the invention, in step (3), the siliceous corrigent and the aluminum corrigent, institute The mixing quality ratio for stating irony corrigent is (1.45~1.55)：(0.4~0.5)：1.Thus, be advantageous to improve carbide slag water The production efficiency of mud clinker.

In some embodiments of the invention, in step (6) and step (8), first fuel gas and described Two fuel gas independently be selected from being rich in CO gas caused by methane, coke-stove gas and calcium carbide production process At least one of stock gas, preferably stock gas, and the carbon monoxide content in the stock gas is not less than 85vt%. Thus, coal dust resource can be saved, and avoids the unsafe factors such as the preheating device fluctuation of service that coal dust firing may bring.

The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：

Fig. 1 is the system structure diagram according to an embodiment of the invention for preparing clinker；

Fig. 2 is the system structure diagram for preparing clinker according to further embodiment of the present invention；

Fig. 3 is the system structure diagram for preparing clinker according to another embodiment of the invention；

Fig. 4 is the method flow schematic diagram according to an embodiment of the invention for preparing clinker；

Fig. 5 is the method flow schematic diagram for preparing clinker according to further embodiment of the present invention；

Fig. 6 is the method flow schematic diagram for preparing clinker according to another embodiment of the invention.

Embodiment

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three It is individual etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.

In one aspect of the invention, the present invention proposes a kind of system for preparing clinker, according to the reality of the present invention Example is applied, with reference to figure 1, the system includes：Dehydration device 100, drying crusher 200, mixing arrangement 300, fine mill 400, One preheating device 500, decomposer 600, the second preheating device 700, calciner plant 800 and cooling device 900.

According to an embodiment of the invention, dehydration device 100 has carbide slag outlet 102 after carbide slag entrance 101 and dehydration, And suitable for carbide slag is carried out into dewater treatment, so as to carbide slag after being dehydrated.Specifically, it is 60-70wt%'s by water content Carbide slag, which is delivered in dehydration device, carries out dewater treatment, obtains carbide slag after the relatively low dehydration of water content.Wherein carbide slag is Residue after calcium carbide hydrolysis, main component is calcium hydroxide, and can be used as clinker containing abundant calcium oxide in carbide slag Calcareous corrigent in production, therefore substitute lime stone with carbide slag and prepare clinker, both reduce natural limestone resource Exhaustive exploitation, be greatly reduced the discharge of greenhouse gases.In addition, decomposition temperature of limestone is 850 degrees Celsius, and carbide slag The decomposition temperature of middle calcium hydroxide is 580 degrees Celsius, therefore, substitutes lime stone using carbide slag and prepares clinker, can drop Low energy consumption, production efficiency is improved, while by the way that the dehydration of carbide slag is separated with drying to crush, advantageously reduce processing carbide slag Energy consumption.It should be noted that dehydration device is not particularly restricted, those skilled in the art can be carried out according to being actually needed Selection, such as can be centrifuge.

According to one embodiment of present invention, the moisture of carbide slag is not particularly restricted after dehydration, this area Technical staff can be selected according to being actually needed, according to the specific embodiment of the present invention, the water of carbide slag after dehydration It can be 20-25wt% to divide content.Inventor has found, can be significantly better than using carbide slag after the dehydration of the application moisture Other save the energy consumption of whole technique.

According to an embodiment of the invention, drying crusher 200 has carbide slag entrance 201 and drying carbide slag after dehydration Grain outlet 202, carbide slag entrance 201 is connected with carbide slag outlet 102 after dehydration after dehydration, and suitable for carbide slag after dehydration is entered Row drying and break process, to obtain drying carbide slag particle.Specifically, after the dehydration for being 20-25wt% by moisture Carbide slag supplies to be dried and break process into drying crusher, obtains drying carbide slag particle.Thus, can further remove The moisture in carbide slag after being dehydrated is removed, while dramatically increases the specific surface area of drying carbide slag particle, increases follow-up carbide slag Decomposition rate.

According to one embodiment of present invention, the moisture of drying carbide slag particle is not particularly restricted, this area Technical staff can be selected according to being actually needed, according to the present invention a specific embodiment, drying carbide slag particle Moisture can be not higher than 0.5wt%.Inventor has found, using the drying carbide slag particle of the application moisture content range Other, which can be significantly better than, reduces the energy consumption of subsequent decomposition device, while improves the production efficiency of whole technique.

According to still another embodiment of the invention, the particle diameter of drying carbide slag particle is not particularly restricted, this area Technical staff can be selected according to being actually needed, according to the present invention a specific embodiment, drying carbide slag particle Particle diameter can be 74 μm.Inventor is had found, other can be significantly better than using the drying carbide slag particle of the application particle size range The decomposition efficiency of carbide slag in subsequent decomposition device is improved, while saves energy consumption.

According to an embodiment of the invention, mixing arrangement 300 has siliceous corrigent entrance 301, aluminum corrigent entrance 302nd, irony corrigent entrance 303 and mixing correction material outlet 304, and be suitable to siliceous corrigent, aluminum corrigent and iron Matter corrigent is mixed, to obtain mixing correction material.Specifically, production clinker is mainly by calcareous corrigent, silicon Matter corrigent, aluminum corrigent and irony corrigent composition.Generally, calcareous corrigent is mainly limestone resource, and the application Calcareous corrigent in being produced in the carbide slag of middle use containing abundant CaO, alternative lime stone as clinker, both subtracted Lack the exhaustive exploitation of natural limestone resource, be greatly reduced the discharge of greenhouse gases.It should be noted that siliceous correction Agent can be sandstone, and aluminum corrigent can be flyash, and irony corrigent can be sulfate slag.

According to one embodiment of present invention, siliceous corrigent and aluminum corrigent, the mixing quality ratio of irony corrigent It is not particularly restricted, those skilled in the art can be selected according to being actually needed, specific according to one of the present invention Embodiment, siliceous corrigent can be (1.45~1.55) with aluminum corrigent, the mixing quality ratio of irony corrigent：(0.4~ 0.5)：1.Inventor has found, if siliceous corrigent and aluminum corrigent, the mixing quality of irony corrigent, than too high, cement is ripe Material is more difficult to be burnt till, but generation amount of liquid phase is less, is not easy ring formation, favourable to rotary kiln running；Conversely, then clinker is easily burnt till, But it is more to produce amount of liquid phase, easy ring formation, rotary kiln running is difficult.Thus, using siliceous corrigent described herein and aluminum Corrigent, the mixing quality of irony corrigent are than that can be significantly better than other burning till while being transported to rotary kiln beneficial to clinker Row is favourable.

According to an embodiment of the invention, there is fine mill 400 mixing correction material inlet 401 and mixing correction powder to go out Mouth 402, mixing correction material inlet 401 are connected with mixing correction material outlet 304, and are suitable to be ground mixing correction material Thin processing, to obtain mixing correction powder.Thus, the specific surface area of mixing correction powder can be dramatically increased, so as to increase it With the contact area of drying carbide slag particle.It should be noted that the particular type of corrigent fine mill is not limited especially System, those skilled in the art can be selected according to being actually needed, such as can be ball mill or vertical mill.

According to one embodiment of present invention, the particle diameter of mixing correction powder is not particularly restricted, the technology of this area Personnel can be selected according to being actually needed, and according to the specific embodiment of the present invention, the particle diameter of mixing correction powder can Think that the accounting less than 74 microns is not less than 90%.Inventor has found that correcting powder using the mixing of the application particle diameter can be notable Better than the decomposition efficiency of carbide slag in other raising subsequent decomposition devices.

According to an embodiment of the invention, the first preheating device 500 has mixing correction powder entrance 501, the first pre- hot gas Material outlet 504 after the preheating of gas outlet 503 and first after entrance 502, first exchanges heat, mixing correction powder entrance 501 is with mixing Powder outlet 402 is corrected to be connected, and suitable for mixing correction powder is carried out into the pre-heat treatment in the presence of the first pre- hot gas, so as to Obtain after the first preheating gas after material and the first heat exchange.Namely first preheating device by cyclone manner realize gas and material point From gas is discharged from top, and material is discharged from below.Thus, can be achieved to mixing correct powder preheating, while by will preheating and Resolution process is individually placed to carry out in different preheatings and decomposer, is advantageously implemented the first preheating device and decomposer Stable operation.It should be noted that those skilled in the art can be according to the series progress being actually needed to the first preheating device Selection, such as the first preheating device can use two-stage preheater.Specifically, mixing correction powder entrance enters with the first pre- hot gas Mouthful can be single two mouths, or same mouth, and can be located above the side wall of the first preheating device, when mixing correction When powder entrance and the first pre- hot gas inlet are same mouth, by airborne material mode, the first pre- hot gas can be rectified with mixing Positive powder enters in the first preheating device above its side wall together, and gas outlet can be pre- positioned at first after the first of gained the heat exchange The top of thermal, material outlet can be located at the lower section of the first preheating device after the first preheating.

According to an embodiment of the invention, decomposer 600 has drying carbide slag particle entrance 601, the first fuel gas Gas outlet 605 after entrance 602, the first combustion-supporting gas entrance 603, decomposing materials outlet 604 and burning, drying carbide slag particle enters Mouth 601 is connected with drying carbide slag particle outlet 202, and suitable for that will be done under the first fuel gas and the effect of the first combustion-supporting gas Dry calcium carbide solid impurity particle carries out resolution process, to obtain gas after decomposing materials and burning.Inventor has found, should during, with the One fuel gas substitutes pulverized coal as fuel, can save coal dust resource, avoids the preheating device operation that coal dust firing may be brought It is unstable to wait unsafe factor.Contain substantial amounts of Ca (OH) in mixed material₂, in rubbish charcoal particle, fuel gas and combustion-supporting gas Decomposed caused by body burning in the presence of heat reaction, generation CaO and vapor.It should be noted that decomposing materials go out Mouth can be single two mouths with gas outlet after burning, or same mouth, and the top of decomposer is arranged in, when When gas outlet is same mouth after decomposing materials are exported and burnt, by airborne material mode, gas can be with analyte after burning Material discharges decomposer from its top together, and then airborne material enters the second preheating device together.Thus, drying carbide slag particle After decomposer is passed through, decomposed in the presence of the first fuel gas and the first combustion-supporting gas that are passed through below, The decomposing materials of gained are after combustion in the presence of gas toward walking at the top of decomposer simultaneously, behind decomposing materials outlet and burning Gas outlet output.Specifically, the temperature of decomposable process can be 600 degrees Celsius or higher, and the first combustion-supporting gas can be Air.

According to one embodiment of present invention, decomposer includes multiple first fuel gas entrances and multiple first combustion-supporting Gas access, and multiple first fuel gas entrances and multiple first combustion-supporting gas entrances are vertical with decomposer axis direction Same level on, and in the side wall below the decomposer.Thus, it may be such that the first fuel gas in decomposer Burn as early as possible, condition is provided for the decomposition of mixed material.

According to still a further embodiment, on the axis direction of decomposer, drying carbide slag particle entrance exists Where first fuel gas entrance and the first combustion-supporting gas entrance at the top 0.5-1.5m of plane.Thus, be advantageous to improve and do The decomposition rate of dry calcium carbide solid impurity particle and the heat utilization efficiency of whole technique.Inventor find, if drying carbide slag particle entrance from The distance of the top of plane is too high where first fuel gas and the first combustion-supporting gas entrance, then will cause drying carbide slag particle Preheating time is short, and resolution ratio is low；On the contrary then influence fuel gas and combustion-supporting gas fully burn, and cause caused heat few.

According to still another embodiment of the invention, the particular type of the first fuel gas is not particularly restricted, this area Technical staff can be selected according to being actually needed, according to the present invention a specific embodiment, the first fuel gas can Think selected from caused by methane, coke-stove gas and calcium carbide production process be rich in CO gas stock gas at least it One, preferably stock gas, and the carbon monoxide content in stock gas is not less than 85vt%.Inventor has found, flammable with first Gas instead pulverized coal as fuel, coal dust resource can be saved, avoid the preheating device fluctuation of service that coal dust firing may be brought Deng unsafe factor.Wherein stock gas is the stock gas that caused predominant amount is carbon monoxide in calcium carbide production process, In this way, on the one hand realizing effective utilization of toxic gas in calcium carbide production process, coal dust can be saved in addition, reduce clinker Production cost, there is preferable environmental benefit and economic benefit.

According to an embodiment of the invention, the second preheating device 700 have material inlet 701, the second pre- hot gas inlet 702, Material outlet 704 after the heat exchange of gas outlet 703 and second, material inlet 701 and decomposing materials outlet 604 and first after second heat exchange Material outlet 504 is connected after preheating, and the second pre- hot gas inlet 702 is connected with gas outlet 605 after burning, and gas exports after the second heat exchange 703 are connected with the first pre- hot gas inlet 502, and are suitable in the presence of gas after combustion, to thing after decomposing materials and the first preheating Material carries out the pre-heat treatment, to obtain after the second heat exchange gas after material and the second heat exchange, and gas after the second heat exchange is supplied to the Used in one preheating device as the first pre- hot gas.Namely second preheating device by cyclone manner realize gas and material separation, Gas is discharged from top, and material is discharged from below.Inventor's discovery, point obtained by as material after first is preheated and through decomposer Material is solved with pneumatic transmission after burning to the second preheating device, on the one hand can be achieved to the preheating of material after the first preheating and further Decomposing materials are preheated, the separation of gas after material after the second preheating exchanges heat with second on the one hand can be achieved, so as to reach pair Gas is utilized respectively after material exchanges heat with second after second preheating.It should be noted that material inlet and the second pre- hot gas inlet Can be single two mouths, or same mouth, be respectively positioned on the side wall upper part of the second preheating device, when material inlet and When second pre- hot gas inlet is same mouth, by airborne material mode, the second pre- hot gas inlet can be with material together from The side wall upper part of two preheating devices enters the second preheating device；And gas outlet can be located at the second preheating device after the second heat exchange Top, material outlet is located at the bottom of the second preheating device after the second preheating.

According to an embodiment of the invention, calciner plant 800 has material inlet 801, the second fuel gas after the second heat exchange Gas outlet 804 and Cement Clinker outlet 805, thing after the second heat exchange after entrance 802, the second combustion-supporting gas entrance 803, reaction Material entrance 801 is connected with material outlet 704 after the second heat exchange, and gas outlet 804 is connected with decomposer 600 after reaction, and is suitable to Material carries out calcination processing after second is exchanged heat in the presence of the second fuel gas and the second combustion-supporting gas, to obtain high temperature Gas after clinker and reaction, and gas after reaction is supplied to decomposer.Inventor has found, passes through material after second is exchanged heat Hot sending is calcined to calciner plant, can significantly save the energy consumption of calciner plant, and will calcine gas after the reaction of gained supply to Decomposer, the cascade utilization to gas sensible heat after reaction can be achieved, increase the heat utilization efficiency of whole technique.Specifically, second can It can be multiple to fire gas access and the second combustion-supporting gas.

According to one embodiment of present invention, calciner plant is not particularly restricted, and those skilled in the art can basis It is actually needed and is selected, according to the specific embodiment of the present invention, calciner plant can be rotary kiln, and after the second heat exchange Gas outlet 804 is located at turn around at the kiln tail of kiln after material inlet 801 and reaction, the second fuel gas entrance 802, the second combustion-supporting gas Body entrance 803 and Cement Clinker outlet 805 are located at turn around at the kiln hood of kiln.Thus, the second fuel gas can help second Accelerate its burning velocity in the presence of combustion gas body, be advantageous to improve the calcination efficiency of material after the second heat exchange in calciner plant, together Shi Jieyue energy consumptions.

According to still a further embodiment, the condition of calcination processing is not particularly restricted, those skilled in the art Member can be selected according to being actually needed, and according to the specific embodiment of the present invention, the temperature of calcination processing can be 1410~1460 degrees Celsius, the time can be 23~29min.Inventor has found, if the temperature of calcination processing is too high, time mistake It is long, it is easily caused that liquid phase growing amount is more, and ring formation of rotary kiln is serious, influences rotary kiln running；Conversely, then liquid phase growing amount is few, cement Clinker quality is poor..

According to still another embodiment of the invention, second heat exchange after the mixing quality ratio of material and the second fuel gas not Be particularly limited, those skilled in the art can be selected according to being actually needed, according to the present invention a specific embodiment, The mixing quality of material and the second fuel gas ratio can be (28~32) after second heat exchange：1.Inventor has found, if second changes Material is with the mixing quality of the second fuel gas than too high after heat, then calcining heat is low, and caused heat is few, cement clinker quality Difference；Conversely, then calcining heat is high, amount of liquid phase caused by material is more after the second heat exchange, easily causes ring formation of rotary kiln, it is continuous to influence its Stable operation.

According to still another embodiment of the invention, the particular type of the second fuel gas is not particularly restricted, this area Technical staff can be selected according to being actually needed, according to the present invention a specific embodiment, the second fuel gas can Think selected from caused by methane, coke-stove gas and calcium carbide production process be rich in CO gas stock gas at least it One, preferably stock gas, and the carbon monoxide content in stock gas is not less than 85vt%.Inventor has found, flammable with second Gas instead pulverized coal as fuel, coal dust resource can be saved, avoid the preheating device fluctuation of service that coal dust firing may be brought Deng unsafe factor.Wherein stock gas is the stock gas that caused predominant amount is carbon monoxide in calcium carbide production process, In this way, on the one hand realizing effective utilization of toxic gas in calcium carbide production process, coal dust can be saved in addition, reduce clinker Production cost, there is preferable environmental benefit and economic benefit.

According to an embodiment of the invention, there is the first cooling section 910, the and of the second cooling section 920 successively in cooling device 900 3rd cooling section 930, the first cooling section 910 have Cement Clinker entrance 901, the first gas at normal temperature entrance 902 and first Gas vent 903, Cement Clinker entrance 901 and Cement Clinker outlet 805 are connected, and first gas exports 903 and the One combustion-supporting gas entrance 603 is connected, and the second cooling section 920 has the second gas at normal temperature entrance 904 and second gas outlet 905, Second gas outlet 905 is connected with the second combustion-supporting gas entrance 803, and the 3rd cooling section 930 has the 3rd gas at normal temperature entrance 906th, third gas outlet 907 and clinker outlet 908, and it is cold suitable for be segmented normal temperature air and Cement Clinker But handle, to obtain first gas, second gas, third gas and clinker, and first gas is supplied to decomposition and filled Put the first combustion-supporting gas of middle conduct to use, second gas is supplied into calciner plant, used as the second combustion-supporting gas.By This, on the one hand can be achieved the cooling of Cement Clinker, and the first gas to cooling gained, second gas heat on the one hand can be achieved The recycling of energy, be advantageous to save the energy consumption of whole system.

According to one embodiment of present invention, cooling device is not particularly restricted, and those skilled in the art can root Selected according to being actually needed, according to the specific embodiment of the present invention, cooling device can be grate-cooler.Thus, favorably In the cooling effectiveness for improving Cement Clinker.

According to still a further embodiment, the temperature of first gas is 800-1100 degrees Celsius, the temperature of second gas Spend for 400-700 degrees Celsius.Thus, supplied to decomposer and be used as by the first gas obtained after the first cooling section is exchanged heat First combustion-supporting gas uses, and the second gas obtained after the second cooling section is exchanged heat supplies into calciner plant combustion-supporting as second Gas uses, it is possible to achieve waste heat makes full use of, so as to reduce system energy consumption.

According to an embodiment of the invention, with reference to figure 2, gas exports 503 and is connected with drying crusher 200 after the first heat exchange, and Supply and used into drying crusher as drying source suitable for gas after the first heat exchange for obtaining the first preheating device.Thus, Carbide slag after the dehydration in drying crusher is dried using gas after the first heat exchange, further improves the heat of whole technique Utilization rate.

According to an embodiment of the invention, it is connected with reference to figure 3, drying crusher 200 with mixing arrangement 300, and suitable for that will dry Drying source after the heat exchange obtained in dry disintegrating machine is supplied into mixing arrangement to be used as dried medium.Thus, will can dry Drying source in dry disintegrating machine for carbide slag after drying and dewatering is further used for mixing arrangement with dry mixed device Siliceous corrigent, aluminum corrigent and irony corrigent, so as to which first changes caused by further make use of in the first preheating device The heat of gas gas after heat, further increase the heat utilization efficiency of whole technique.

According to an embodiment of the invention, the above-mentioned system for preparing clinker at least has one of following advantages：

The system for preparing clinker according to embodiments of the present invention, lime stone production cement is substituted by using carbide slag Clinker, the exploitation of limestone resource is saved, reduced the discharge of greenhouse gases；

The system for preparing clinker according to embodiments of the present invention, because the decomposition temperature of carbide slag is low compared with lime stone, by This has saved the energy consumption of clinker production process, improves productivity ratio；

The system for preparing clinker according to embodiments of the present invention, carbide slag is in decomposer external application first after dehydration The waste heat of gas is withering after heat exchange, thus takes full advantage of the heat of gas after the first heat exchange of the first preheating device discharge Amount, had both realized the drying to carbide slag after dehydration, and also ensure that the stable operation of preheating device and decomposer, while also might be used Improve the resolution ratio of carbide slag；

The system for preparing clinker according to embodiments of the present invention, by the way that drying carbide slag particle to be fed directly to decompose Device is decomposed, and significantly improves the decomposition efficiency of drying carbide slag particle, while has saved energy consumption；

The system for preparing clinker according to embodiments of the present invention, it is pre- by the way that mixing correction powder carry is entered into first Thermal, drying carbide slag particle delivered into decomposer, reduce the operating load of preheating device and decomposer；

The system for preparing clinker according to embodiments of the present invention, by decomposer and calciner plant with flammable Gas instead pulverized coal as fuel, coal dust resource is saved, it is unstable to avoid the preheating device operation that may be brought after coal dust firing Surely unsafe factor is waited；

The system for preparing clinker according to embodiments of the present invention, as to first obtained by cooling down high-temperature clinker The cascade utilization of gas and second gas and its sensible heat, specifically, second gas is used as the second combustion-supporting gas of calciner plant In the burning for promoting the second fuel gas；Gas is passed through decomposer after reaction obtained by calciner plant, and first gas is as first Combustion-supporting gas is also passed into decomposer, and the first fuel gas burns and to dry after the first combustion-supporting gas and reaction in the presence of gas Dry calcium carbide solid impurity particle is decomposed, gas after being burnt；Gas is inconjunction with decomposing materials and with mixing correction powder one after the burning Rise and enter the second preheating device, in the second preheating device, gas further enters to decomposing materials and mixing correction powder after burning Row preheating, obtains gas after the second heat exchange；Gas can preheat as the first pre- hot gas to drying carbide slag particle after second heat exchange, Obtain gas after the first heat exchange；Gas can be supplied into drying crusher after first heat exchange is dried processing to carbide slag after dehydration, And drying crusher is connected with mixing arrangement, then first heat exchange after gas can be further dried after drying and dehydrating after carbide slag it is mixed Attach together and put interior siliceous corrigent, aluminum corrigent and irony corrigent, can be immediately discharged to after last removing dust in air.So The efficient utilization of the energy is realized, greatly reduces energy consumption, has saved coal dust resource, reduces manufacture of cement cost.

In another aspect of the invention, the present invention proposes a kind of prepares water using the above-mentioned system for preparing clinker The method of mud clinker, according to an embodiment of the invention, with reference to figure 4, this method includes：

S100：Carbide slag is supplied to dehydration device and carries out dewater treatment

In the step, carbide slag is supplied to dehydration device and carries out dewater treatment, so as to carbide slag after being dehydrated.Specifically , the carbide slag that water content is 60-70wt% is delivered in dehydration device and carries out dewater treatment, obtains relatively low de- of water content Carbide slag after water.Wherein carbide slag is the residue after calcium carbide hydrolysis, and main component is calcium hydroxide, and containing abundant in carbide slag Calcium oxide, can as clinker produce in calcareous corrigent, therefore with carbide slag substitute lime stone prepare clinker, Both reduce the exhaustive exploitation of natural limestone resource, and be greatly reduced the discharge of greenhouse gases.In addition, decomposition of limestone temperature Spend for 850 degrees Celsius, and the decomposition temperature of calcium hydroxide is 580 degrees Celsius in carbide slag, therefore, lime is substituted using carbide slag Standby clinker made of stones, energy consumption can be reduced, improve production efficiency, while divide by the way that the dehydration of carbide slag is crushed with drying Open, advantageously reduce the energy consumption of processing carbide slag.It should be noted that dehydration device is not particularly restricted, art technology Personnel can be selected according to being actually needed, such as can be centrifuge.

S200：Carbide slag after dehydration is supplied into drying crusher and carries out drying break process

In the step, carbide slag after dehydration is supplied into drying crusher and carries out drying break process, to be done Dry calcium carbide solid impurity particle.Carried out specifically, moisture is supplied into drying crusher for carbide slag after 20-25wt% dehydration Dry and break process, obtains drying carbide slag particle.Thus, the moisture in carbide slag after being dehydrated can be further removed, simultaneously The specific surface area of drying carbide slag particle is dramatically increased, increases the decomposition rate of follow-up carbide slag.

S300：Siliceous corrigent, aluminum corrigent and irony corrigent are supplied into mixing arrangement and carry out mixed processing

In the step, siliceous corrigent, aluminum corrigent and irony corrigent are supplied and mixed into mixing arrangement Processing, to obtain mixing correction material.Specifically, production clinker is mainly by calcareous corrigent, siliceous corrigent, aluminum Corrigent and irony corrigent composition.Generally, calcareous corrigent is mainly limestone resource, and the carbide slag used in the application In containing abundant CaO, alternative lime stone both reduce natural limestone as the calcareous corrigent in clinker production The exhaustive exploitation of resource, the discharge of greenhouse gases has been greatly reduced it.It should be noted that siliceous corrigent can be sandstone, Aluminum corrigent can be flyash, and irony corrigent can be sulfate slag.

S400：Mixing correction material is supplied to corrigent fine mill and carries out levigate processing

In the step, mixing correction material is supplied to corrigent fine mill and carries out levigate processing, to be mixed Correct powder.Thus, the specific surface area of mixing correction powder can be dramatically increased, so as to increase its connecing with drying carbide slag particle Contacting surface is accumulated.It should be noted that the particular type of corrigent fine mill is not particularly restricted, those skilled in the art can It is actually needed and is selected with basis, such as can is ball mill or vertical mill.

S500：Mixing correction powder is supplied in the presence of the first pre- hot gas and carried out into the first preheating device at preheating Reason

In the step, mixing correction powder is supplied into the first preheating device, carried out in the presence of the first pre- hot gas The pre-heat treatment, to obtain after the first heat exchange material after gas and the first preheating.Namely first preheating device to pass through cyclone manner real The now separation of gas and material, gas are discharged from top, and material is discharged from below.Thus, the preheating to mixing correction powder can be achieved, simultaneously By the way that preheating and resolution process to be individually placed to carry out in different preheatings and decomposer, the first preheating device is advantageously implemented With the stable operation of decomposer.It should be noted that those skilled in the art can be according to being actually needed to the first pre- hot charging The series put is selected, such as the first preheating device can use two-stage preheater.Specifically, mixing correction powder entrance with First pre- hot gas inlet can be single two mouths, or same mouth, and can be located in the side wall of the first preheating device Side, when powder entrance is corrected in mixing and the first pre- hot gas inlet is same mouth, by airborne material mode, the first pre- hot gas can To enter together above its side wall in the first preheating device with mixing correction powder, and gas exports after the first of gained the heat exchange The top of the first preheating device can be located at, material outlet can be located at the lower section of the first preheating device after the first preheating.

S600：Drying carbide slag particle is supplied to decomposition in the presence of the first fuel gas and the first combustion-supporting gas and filled Put middle carry out resolution process

In the step, drying carbide slag particle is supplied into decomposer, in the first fuel gas and the first combustion-supporting gas Resolution process is carried out in the presence of body, to obtain gas after decomposing materials and burning.Inventor has found, during being somebody's turn to do, with first Fuel gas substitutes pulverized coal as fuel, can save coal dust resource, and the preheating device that avoiding coal dust firing may bring is run not The unsafe factor such as stable.Contain substantial amounts of Ca (OH) in mixed material₂, in rubbish charcoal particle, fuel gas and combustion-supporting gas Decomposed in the presence of heat caused by burning reaction, generate CaO and vapor.It should be noted that decomposing materials export Can be single two mouths with gas outlet after burning, or same mouth, and be arranged in the top of decomposer, when dividing When gas outlet is same mouth after solving material outlet and burning, by airborne material mode, gas can be with decomposing materials after burning Decomposer is discharged from its top together, then airborne material enters the second preheating device together.Thus, drying carbide slag particle exists After being passed through decomposer, decomposed in the presence of the first fuel gas and the first combustion-supporting gas that are passed through below, together When obtained by decomposing materials after combustion in the presence of gas toward walking at the top of decomposer, from decomposing materials export and burn after gas Outlet output.Specifically, the temperature of decomposable process can be 600 DEG C or higher, and the first combustion-supporting gas can be air.

According to one embodiment of present invention, the particular type of the first fuel gas is not particularly restricted, this area Technical staff can be selected according to being actually needed, and according to the specific embodiment of the present invention, the first fuel gas can be with For selected from caused by methane, coke-stove gas and calcium carbide production process be rich in CO gas stock gas at least it One, preferably stock gas, and the carbon monoxide content in stock gas is not less than 85vt%.Inventor has found, flammable with first Gas instead pulverized coal as fuel, coal dust resource can be saved, avoid the preheating device fluctuation of service that coal dust firing may be brought Deng unsafe factor.Wherein stock gas is the stock gas that caused predominant amount is carbon monoxide in calcium carbide production process, In this way, on the one hand realizing effective utilization of toxic gas in calcium carbide production process, coal dust can be saved in addition, reduce clinker Production cost, there is preferable environmental benefit and economic benefit.

S700：Material after decomposing materials and the first preheating is supplied into the second preheating device in the presence of gas after combustion Carry out the pre-heat treatment

In the step, material after decomposing materials and the first preheating is supplied into the second preheating device, after combustion gas Effect is lower to carry out the pre-heat treatment, to obtain after the second heat exchange gas after material and the second heat exchange, and gas after the second heat exchange is supplied Used into S500 as the first pre- hot gas.Namely second preheating device by cyclone manner realize gas and material separation, gas from Top is discharged, and material is discharged from below.Inventor's discovery, the analyte obtained by as material after first is preheated and through decomposer After material and burning on the one hand pneumatic transmission can be achieved to the preheating of material after the first preheating and further to dividing to the second preheating device Solution material preheated, on the one hand can be achieved second preheating after material with second exchange heat after gas separation, so as to reach to second Gas is utilized respectively after material exchanges heat with second after preheating.It should be noted that material inlet and the second pre- hot gas inlet can be with For single two mouths, or same mouth, the side wall upper part of the second preheating device is respectively positioned on, when material inlet and second When pre- hot gas inlet is same mouth, by airborne material mode, the second pre- hot gas inlet can be pre- from second together with material The side wall upper part of thermal enters the second preheating device；And gas outlet can be located at the top of the second preheating device after the second heat exchange Portion, material outlet is located at the bottom of the second preheating device after the second preheating.

S800：Material is supplied to calciner plant after second is exchanged heat under the second fuel gas and the effect of the second combustion-supporting gas Middle carry out calcination processing

In the step, material after the second heat exchange is supplied into calciner plant, in the second fuel gas and the second combustion-supporting gas Body effect is lower to carry out calcination processing, to obtain gas after Cement Clinker and reaction, and gas after reaction is supplied into S600 Decomposer.Inventor has found, is calcined by the way that material after the second heat exchange is heat-fed to calciner plant, can significantly save and forge The energy consumption of device is burnt, and gas is supplied to decomposer after the reaction that will calcine gained, and the step to gas sensible heat after reaction can be achieved Utilize, increase the heat utilization efficiency of whole technique.Specifically, the second fuel gas entrance and the second combustion-supporting gas can be multiple.

According to one embodiment of present invention, the condition of calcination processing is not particularly restricted, those skilled in the art It can be selected according to being actually needed, according to the specific embodiment of the present invention, the temperature of calcination processing can be 1410 ~1460 degrees Celsius, the time can be 23~29min.Inventor has found, if the temperature of calcination processing is too high, overlong time is easily led Cause liquid phase growing amount is more, and ring formation of rotary kiln is serious, influences rotary kiln running；Conversely, then liquid phase growing amount is few, cement clinker quality Difference.

According to still a further embodiment, second heat exchange after the mixing quality ratio of material and the second fuel gas not Be particularly limited, those skilled in the art can be selected according to being actually needed, according to the present invention a specific embodiment, The mixing quality of material and the second fuel gas ratio can be (28~32) after second heat exchange：1.Inventor has found, if second changes Material is with the mixing quality of the second fuel gas than too high after heat, then calcining heat is low, and caused heat is few, cement clinker quality Difference；Conversely, then calcining heat is high, amount of liquid phase caused by material is more after the second heat exchange, easily causes ring formation of rotary kiln, it is continuous to influence its Stable operation.

S900：Normal temperature air and Cement Clinker are supplied into cooling device and carry out sub-sectional cooling processing

In the step, normal temperature air and Cement Clinker are supplied into cooling device and carry out sub-sectional cooling processing, with Just first gas, second gas, third gas and clinker are obtained, and first gas is supplied into S600 and helped as first Combustion gas body is used, and second gas is supplied into S800 and used as the second combustion-supporting gas.Thus, high-temperature water on the one hand can be achieved The cooling of mud clinker, the recycling of the first gas, second gas heat energy to cooling gained on the one hand can be achieved, be advantageous to save The about energy consumption of whole system.

According to one embodiment of present invention, the temperature of first gas is 800-1100 degrees Celsius, the temperature of second gas For 400-700 degrees Celsius.Thus, supplied by obtained first gas after the first cooling section is exchanged heat to decomposer and be used as the One combustion-supporting gas is used, and the second gas obtained after the second cooling section is exchanged heat is supplied into calciner plant as the second combustion-supporting gas Body uses, it is possible to achieve waste heat makes full use of, so as to reduce system energy consumption.

According to an embodiment of the invention, further comprise with reference to figure 5, the above-mentioned method for preparing clinker：

S1000：Gas after obtained in S500 first heat exchange is supplied into drying crusher into S200 as drying source Use

In the step, the drying crusher that gas is supplied into S200 after obtained in S500 first is exchanged heat is warm as drying Source uses.Thus, carbide slag after the dehydration in drying crusher is dried using gas after the first heat exchange, further improved The heat utilization efficiency of whole technique.

According to an embodiment of the invention, further comprise with reference to figure 6, the above-mentioned method for preparing clinker：

S1100：Drying source after the heat exchange that S1000 is obtained is supplied and used into S300 as dried medium

In the step, the drying source after the heat exchange that S1000 is obtained is supplied and used into S300 as dried medium.By This, can be further used for mixing arrangement with dry mixed by the drying source in drying crusher for carbide slag after drying and dewatering Siliceous corrigent, aluminum corrigent and irony corrigent in device, produced so as to further make use of in the first preheating device The first heat exchange after gas gas heat, further increase the heat utilization efficiency of whole technique.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification Close and combine.

Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims

A kind of 1. system for preparing clinker, it is characterised in that including：

Dehydration device, carbide slag exports after the dehydration device has carbide slag entrance and dehydration；

Drying crusher, the drying crusher has carbide slag entrance and drying carbide slag particle outlet after dehydration, described de- Carbide slag entrance is connected with carbide slag outlet after the dehydration after water；

Mixing arrangement, the mixing arrangement have siliceous corrigent entrance, aluminum corrigent entrance, irony corrigent entrance and mixed Close correction material outlet；

Fine mill, the fine mill have mixing correction material inlet and mixing correction powder outlet, the mixing correction Material inlet is connected with the mixing correction material outlet；

First preheating device, first preheating device have mixing correction powder entrance, the first pre- hot gas inlet, the first heat exchange Gas outlet and material outlet after the first preheating, the mixing correction powder entrance are corrected powder outlet with the mixing and are connected afterwards；

Decomposer, the decomposer have drying carbide slag particle entrance, the first fuel gas entrance, the first combustion-supporting gas Gas exports after entrance, decomposing materials outlet and burning, and the drying carbide slag particle entrance goes out with the drying carbide slag particle Mouth is connected；

Second preheating device, gas exports after second preheating device has material inlet, the second pre- hot gas inlet, the second heat exchange With material outlet after the second heat exchange, the material inlet goes out with material outlet after the described first preheating and the decomposing materials respectively Mouthful it is connected, the second pre- hot gas inlet is connected with gas outlet after the burning, and gas exports and described the after second heat exchange One pre- hot gas inlet is connected；

Calciner plant, the calciner plant have material inlet, the second fuel gas entrance, the second combustion-supporting gas after the second heat exchange Gas outlet and Cement Clinker outlet after entrance, reaction, material inlet and thing after the described second heat exchange after second heat exchange Material outlet is connected, and gas is exported and is connected with the decomposer after the reaction；

Cooling device, has the first cooling section, the second cooling section and the 3rd cooling section in the cooling device successively, and described first There is cold section Cement Clinker entrance, the first gas at normal temperature entrance and first gas outlet, the Cement Clinker to enter Mouth is connected with Cement Clinker outlet, and the first gas outlet is connected with the first combustion-supporting gas entrance, described There is second cold section the second gas at normal temperature entrance and second gas to export, the second gas outlet and the described second combustion-supporting gas Body entrance is connected, and the 3rd cooling section has the 3rd gas at normal temperature entrance, third gas outlet and clinker outlet.
2. system according to claim 1, it is characterised in that the calciner plant is rotary kiln, after second heat exchange Gas outlet is at the kiln tail of the rotary kiln after material inlet and the reaction, the second fuel gas entrance, described the Two combustion-supporting gas entrances and Cement Clinker outlet are at the kiln hood of the rotary kiln；

Optional, the cooling device is grate-cooler.
3. system according to claim 1, it is characterised in that gas and the drying crusher phase after first heat exchange Even；

Optional, the drying crusher is connected with the mixing arrangement.
4. system according to claim 1, it is characterised in that there are multiple first combustible gases on the decomposer Body entrance and multiple first combustion-supporting gas entrances, and the multiple first fuel gas entrance and the multiple first combustion-supporting Gas access is in the same level vertical with the decomposer axis direction, and the side below the decomposer On wall；

Optional, on the axis direction of the decomposer, the drying carbide slag particle entrance is in first combustible gas Where body entrance and the first combustion-supporting gas entrance at the top 0.5-1.5m of plane.
5. a kind of method that system using any one of claim 1-4 prepares clinker, it is characterised in that bag Include：

(1) carbide slag is supplied to the dehydration device and carries out dewater treatment, so as to carbide slag after being dehydrated；

(2) carbide slag after the dehydration is supplied and drying break process is carried out into the drying crusher, to obtain drying Calcium carbide solid impurity particle；

(3) siliceous corrigent, aluminum corrigent and irony corrigent are supplied and mixed processing is carried out into the mixing arrangement, with Just mixing correction material is obtained；

(4) mixing is corrected into material to supply to the levigate processing of corrigent fine mill progress, rectified to obtain mixing Positive powder；

(5) mixing is corrected into powder to supply into first preheating device, carried out in the presence of the first pre- hot gas pre- Heat treatment, to obtain after the first heat exchange material after gas and the first preheating；

(6) the drying carbide slag particle is supplied into the decomposer, in the first fuel gas and the first combustion-supporting gas In the presence of carry out resolution process, so as to obtain decomposing materials and burning after gas；

(7) material after the decomposing materials and first preheating is supplied into second preheating device, in the burning The pre-heat treatment is carried out in the presence of gas afterwards, to obtain after the second heat exchange gas after material and the second heat exchange, and described second is changed Gas supplies after heat uses into step (5) as the described first pre- hot gas；

(8) material after the described second heat exchange is supplied into the calciner plant, in the second fuel gas and the second combustion-supporting gas Effect is lower to carry out calcination processing, to obtain gas after Cement Clinker and reaction, and gas after the reaction is supplied to step (6) decomposer in；

(9) normal temperature air and the Cement Clinker are supplied into the cooling device and carries out sub-sectional cooling processing, so as to Obtain first gas, second gas, third gas and clinker, and using the first gas supply into step (6) as First combustion-supporting gas is used, and the second gas is supplied and used into step (8) as second combustion-supporting gas.
6. according to the method for claim 5, it is characterised in that further comprise：

(10) using obtained in step (5) it is described first heat exchange after gas supply to the drying crusher in step (2) as Drying source uses.
7. the method according to claim 5 or 6, it is characterised in that further comprise：

(11) drying source after the heat exchange for obtaining step (10) supplies uses into step (3) as dried medium.
8. according to the method for claim 5, it is characterised in that in step (3), the siliceous corrigent and the aluminum Corrigent, the mixing quality ratio of the irony corrigent are (1.45~1.55)：(0.4~0.5)：1.
9. according to the method for claim 5, it is characterised in that in step (6) and step (8), first combustible gas Body and second fuel gas independently be selected from being rich in an oxygen caused by methane, coke-stove gas and calcium carbide production process Change at least one of stock gas of carbon gas, preferably stock gas, and the carbon monoxide content in the stock gas is not Less than 85vt%.