CN105347702A - Cement production rotary kiln device - Google Patents
Cement production rotary kiln device Download PDFInfo
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- CN105347702A CN105347702A CN201510797544.XA CN201510797544A CN105347702A CN 105347702 A CN105347702 A CN 105347702A CN 201510797544 A CN201510797544 A CN 201510797544A CN 105347702 A CN105347702 A CN 105347702A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The present invention relates to a cement production rotary kiln device including a lime rotary kiln, a coking rotary kiln and a cement rotary kiln. The lime rotary kiln is provided with a limestone material bin and a lime cooling bin, the coking rotary kiln is provided with a pulverized coal material bin and a coke unloader, and the cement rotary kiln is provided with a raw material distributing device, raw material pre-heating equipment and a cement clinker silo. The limestone material bin is connected with a lime material bin by the lime rotary kiln, and the pulverized coal material bin is connected with the coke unloader by the coking rotary kiln. The lime cooling bin is connected with the cement rotary kiln by the raw material distributing device and the raw material pre-heating equipment, and the cement rotary kiln is connected with the cement clinker silo. The cement rotary kiln is provided with a burner, and the coke unloader is connected with the burner. The lime rotary kiln and the coking rotary kiln are respectively provided with a burner, and the burners are connected with a gas storage tank. The cement production rotary kiln device can organically combine cement clinker production, coal powder carbonization, limestone calcination and decomposed gas recovery, can make full use of rotary kiln waste heat, comprehensively use heat and materials, and reduce energy consumption and production costs, and by reducing of carbon dioxide emissions, energy can be conserved, emission can be reduced, greenhouse effect can be reduced, and economic efficiency can be increased.
Description
Technical field
The invention belongs to technical field of chemical production equipment, relate to a kind of rotary kiln, be specifically related to a kind of rotary kiln device producing cement.
Background technology
The chemical composition of Portland clinker mainly contains calcium oxide, silicon-dioxide, aluminium sesquioxide and ferric oxide four kinds of oxide compound compositions.Their summation accounts for more than 95% of Clinker Composition, and wherein, calcium oxide accounts for 62% ~ 67%; At present, China is manufacture of cement and uses big country, and cement is a kind of highly energy-consuming high pollutive industries, and the raw material of cement mostly is the materials such as Wingdale, iron ore, clay and coal, need aborning to process cement raw material, thus reduce the object that cement burns till hear rate in cement kiln.
In the world today, most of manufacture of cement is, in rotary kiln, mixing raw material is sintered into cement clinker, and then makes cement products through operations such as abrasive dusts.Large-scale cement rotary kiln is high energy consuming devices, and along with the fast development of national economy, the waste heat of industrial furnace is very abundant, availablely has a high potential.Lime is the main raw material of manufacture of cement, and Wingdale is sintered into lime in limestone kiln, decomposites a large amount of carbonic acid gas simultaneously.Fuel combustion dinectly bruning Wingdale in limestone kiln, in calcination process, objectionable impurities and impurity directly fall into lime product, have impact on the quality of lime, are unfavorable for producing high-quality lime, the carbonic acid gas simultaneously decomposed and combustion product gases etc. mix, and are unfavorable for recycling CO_2 Resource.
In prior art, cement clinker production, coal carbonization and limestone calcination are respective independently production technique, are all the production equipments needing to expend heat energy, and discharge a large amount of used heat, because production unit is not connected mutually, add energy expenditure and production cost.
Summary of the invention
The object of this invention is to provide a kind of rotary kiln device producing cement, combined by lime rotary kiln, coking rotary kiln, cement rotary kiln, make full use of the waste heat of rotary kiln, reduce manufacture of cement calorific loss, comprehensive utilization heat and material, reduce energy expenditure and production cost, by reducing the discharge of carbonic acid gas, can energy-saving and emission-reduction, reduce Greenhouse effect and increase economic benefit.
Technical scheme of the present invention is: the rotary kiln device producing cement, comprises lime rotary kiln, coking rotary kiln, cement rotary kiln.Lime rotary kiln is provided with Wingdale feed bin and lime cooling storehouse, and coking rotary kiln is provided with coal dust feed bin and coke dumper, and cement rotary kiln is provided with raw meal proportioning device, raw material preliminary heating device and cement clinker storehouse.Wingdale feed bin is connected with lime bin by lime rotary kiln, and coal dust feed bin is connected with coke dumper by coking rotary kiln.Lime cooling storehouse is connected with cement rotary kiln with raw material preliminary heating device by raw meal proportioning device, and cement rotary kiln is connected with cement clinker storehouse.Cement rotary kiln is provided with burner, and coke dumper is connected to burner.Lime rotary kiln and coking rotary kiln are respectively equipped with burner, and burner is connected with gas holder.
Lime rotary kiln is partition lime rotary kiln or dicyclo partition lime rotary kiln, and coking rotary kiln is partition coking rotary kiln or dicyclo partition coking rotary kiln.
Partition lime rotary kiln and partition coking rotary kiln are made up of coaxial mounted inner ring and outer shroud respectively, and interior Ring current distribution is kiln thorax, are annular materials passage between inner ring and outer shroud.Wingdale feed bin is by charging ring and annular materials expanding channels, and annular materials passage cools storehouse by discharging ring with lime and is connected.Coal dust feed bin is by charging ring and annular materials expanding channels, and annular materials passage is connected with coke dumper by discharging ring.
Partition lime rotary kiln is provided with carbon dioxide recovery unit, and the charging of partition lime rotary kiln is equipped with decomposition gas outlet, and decomposition gas outlet is connected to carbon dioxide recovery unit.Partition coking rotary kiln is provided with oil-gas separator, coal tar storage tank and gas holder, and the reinforced of partition coking rotary kiln is equipped with carbonizing gas outlet.Carbonizing gas outlet is connected to oil-gas separator, and the pneumatic outlet of oil-gas separator is connected to gas holder, and liquid exit is connected to coal tar storage tank.Carbon dioxide recovery unit is provided with purifying carbon dioxide equipment, carbonic acid gas cooling apparatus and carbon dioxide storage tank, and purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank.Decomposition gas outlet and purifying carbon dioxide equipment connection.
Cement rotary kiln is two, and raw material preliminary heating device is two cement raw material thermophore, and the kiln thorax of two cement rotary kilns is communicated with by kiln head cover.Device is provided with ball equipment processed, and the top of cement raw material thermophore is provided with air inlet/outlet.Lime cooling storehouse is connected with two cement raw material thermophore with ball equipment processed by raw meal proportioning device, and cement raw material preheater is connected with cement rotary kiln by kiln hood.Air inlet/outlet is connected with gas blower by air T-valve, is connected with exhaust emission system by waste gas T-valve.Device is provided with cogeneration unit, and partition lime rotary kiln is connected with cogeneration unit with partition coking rotary kiln.Cogeneration unit comprises waste heat boiler, steam turbine and generating set.Steam coils established by waste heat boiler, and steam coils is connected with steam turbine, and steam turbine is coaxially connected with generating set.Dicyclo partition lime rotary kiln and dicyclo partition coking rotary kiln are made up of the resistance to material of coaxial mounted inner ring, middle resistance to material, the resistance to material of outer shroud and kiln hood respectively.The center of the resistance to material of inner ring is kiln thorax, is material space between the resistance to material of the resistance to material of inner ring and centre, is outer shroud gas flue between middle resistance to material and the resistance to material of outer shroud, and the outside of the resistance to material of outer shroud is kiln hood.Be respectively equipped with resistance to material between material space and outer shroud gas flue to support.
Dicyclo partition lime rotary kiln and dicyclo partition coking rotary kiln are respectively two, and two dicyclo partition lime rotary kilns are communicated with by kiln head cover, and two dicyclo partition coking rotary kilns are communicated with by kiln head cover.Every platform dicyclo partition lime rotary kiln is furnished with Wingdale feed bin, lime cooling storehouse and two socle lime stone thermophore, and every platform dicyclo partition coking rotary kiln is furnished with coal dust feed bin, coke dumper and two coal dust thermophore.Wingdale thermophore is connected with dicyclo partition lime rotary kiln by kiln hood, and coal dust thermophore is connected with dicyclo partition coking rotary kiln by kiln hood.Wingdale feed bin is by charging ring and material spatial joins, and material space cools storehouse by discharging ring with lime and is connected.Coal dust feed bin is by charging ring and material spatial joins, and material space is connected with coke dumper by discharging ring.Wingdale thermophore top is provided with air inlet/outlet, and air inlet/outlet is connected with gas blower by air T-valve, is connected with exhaust emission system by waste gas T-valve.Coal dust thermophore top is provided with air inlet/outlet, and air inlet/outlet is connected with gas blower by air T-valve, is connected with exhaust emission system by waste gas T-valve.Device is provided with cyclone preheater group, and lime cooling storehouse is connected to the opening for feed of cement rotary kiln by raw meal proportioning device and cyclone preheater group.Device is provided with many bends fly-ash separator, and Wingdale thermophore is connected with dicyclo partition lime rotary kiln with kiln hood by many bends fly-ash separator, and coal dust thermophore is connected with dicyclo partition coking rotary kiln with kiln hood by many bends fly-ash separator.Be provided with heat storage in Wingdale thermophore and coal dust thermophore, heat storage is ceramic refractory or ferrous materials.The shape of heat storage is spherule or cellular polyhedron.Burner burner is solid fuel burner, liquid fuel burner or geseous fuel burner.Kiln head cover is provided with auxiliary burning nozzle.Carbide slag or other carbonaceous materials can be added in raw meal proportioning device.
The rotary kiln device that the present invention produces cement is combined by lime rotary kiln, coking rotary kiln, cement rotary kiln, cement clinker production, coal dust destructive distillation, limestone calcination and recovery decomposition gas are combined, make full use of the waste heat of rotary kiln, decrease manufacture of cement calorific loss, comprehensive utilization heat and material, reduce energy expenditure and production cost, reduce the discharge of carbonic acid gas.Partition calcined by rotary kiln Wingdale, production high-quality lime, reclaims the carbon dioxide of partition thermal degradation simultaneously, effectively make use of natural resources, is conducive to the economic benefit increasing enterprise.Partition rotary kiln destructive distillation coal dust is conducive to gas recovery and coal tar by-product, production high-quality coke.Adopt dicyclo partition Limestone rotary kiln and dicyclo partition coking rotary structure uniqueness, be conducive to Double-side Heating material, improve thermo-efficiency and heats.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention produces the rotary kiln device of cement;
Fig. 2 is the schematic flow sheet of another embodiment of the present invention;
Fig. 3 is the B-B figure of Fig. 2;
Wherein:
1-Wingdale feed bin, 2-carbon dioxide recovery unit, 3-kiln hood, 4-partition lime rotary kiln, 5-charging ring, 6-discharging ring, 7-lime cooling storehouse, 8-kiln head cover, 9-cogeneration unit, 10-raw meal proportioning device, 11-ball equipment processed, 12-coal dust feed bin, 13-oil-gas separator, 14-coal tar storage tank, 15-gas holder, 16-partition coking rotary kiln, 17-coke dumper, 18-burner, 19-exhaust emission system, 20-waste gas T-valve, 21-air T-valve, 22-gas blower, 23-cement raw material thermophore, 24-cement rotary kiln, 25-cement clinker storehouse, 26-auxiliary burning nozzle, 27-dicyclo lime partition rotary kiln, 28-cyclone preheater group, 29-Wingdale thermophore, 30-coal dust thermophore, 31-dicyclo partition coking rotary kiln, 32-many bends fly-ash separator, 33-material space, the resistance to material of 34-inner ring, 35-kiln thorax, 36-kiln hood, the resistance to material of 37-outer shroud, 38-outer shroud gas flue, 39-middle resistance to material, 40-resistance to material supports.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Scope is not limited to embodiment, and those skilled in the art make any change and also belong to the scope of protection of the invention in the scope that claim limits.
Embodiment 1
The present invention produces the rotary kiln device of cement as shown in Figure 1, and the kiln thorax of partition lime rotary kiln 4, partition coking rotary kiln 16, two cement rotary kilns 24, cogeneration unit 9 and carbon dioxide recovery unit 2, two cement rotary kilns is communicated with by kiln head cover 8.Partition lime rotary kiln is provided with Wingdale feed bin 1 and lime cooling storehouse 7, and partition coking rotary kiln is provided with coal dust feed bin 12 and coke dumper 17.Cement rotary kiln is provided with two cement raw material thermophore 23, raw meal proportioning device 10, ball equipment 11 processed and cement clinker storehouse 25.Partition lime rotary kiln and partition coking rotary kiln are made up of coaxial mounted inner ring and outer shroud respectively, and interior Ring current distribution is kiln thorax, are annular materials passage between inner ring and outer shroud.Wingdale feed bin 1 is by charging ring and annular materials expanding channels, and annular materials passage cools storehouse 7 by discharging ring and lime and is connected.Coal dust feed bin 12 is by charging ring and annular materials expanding channels, and annular materials passage is connected with coke dumper 17 by discharging ring.Lime cooling storehouse is connected with two cement raw material thermophore with ball equipment processed by raw meal proportioning device, cement raw material preheater is connected with cement rotary kiln by kiln hood 3, cement rotary kiln is connected with cement clinker storehouse 25, another opening for feed of raw meal proportioning device 10 and cement ingredient equipment connection.The top of cement raw material thermophore is provided with air inlet/outlet, and air inlet/outlet is connected with gas blower 22 by air T-valve 21, is connected with exhaust emission system 19 by waste gas T-valve 20.The charging ring 5 of partition lime rotary kiln 4 is provided with decomposition gas outlet, and decomposition gas outlet is connected to carbon dioxide recovery unit.Carbon dioxide recovery unit 2 is provided with purifying carbon dioxide equipment, carbonic acid gas cooling apparatus and carbon dioxide storage tank, and purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank; Described decomposition gas outlet and purifying carbon dioxide equipment connection.Partition coking rotary kiln is provided with oil-gas separator 13, coal tar storage tank 14 and gas holder 15, and the reinforced of partition coking rotary kiln is equipped with carbonizing gas outlet.Carbonizing gas outlet is connected to oil-gas separator, and the pneumatic outlet of oil-gas separator is connected to gas holder, and liquid exit is connected to coal tar storage tank.Partition lime rotary kiln 4 is connected with cogeneration unit with partition coking rotary kiln 16.Cogeneration unit comprises waste heat boiler, steam turbine and generating set.Steam coils established by waste heat boiler, and steam coils is connected with steam turbine, and steam turbine is coaxially connected with generating set.Cement rotary kiln is provided with coke powder burner, and coke dumper is connected to coke powder burner.Partition lime rotary kiln and partition coking rotary kiln are respectively equipped with burner, and fuel burner nozzle is connected with gas holder 15.Kiln head cover 8 is provided with auxiliary burning nozzle 26, to improve flue-gas temperature.
The operation scheme that the present invention produces the rotary kiln device of cement is, the Wingdale of Wingdale feed bin enters the annular materials space of partition lime rotary kiln 4 through charging ring.Fuel burner nozzle ejection fuel and combustion air, the flue gas partition of generation of burning in kiln thorax heats the material in annular material channel, and limestone calcination is become lime, and lime enters lime cooling storehouse 7 through discharging ring 6.In lime cooling storehouse 7 and cement ingredient equipment, auxiliary material enters in raw meal proportioning device 10 and enters ball equipment 11 processed ball processed after mix.The auxiliary material of cement ingredient equipment comprises carbide slag and clay, also comprises other carbonaceous materials.Cement material pelletizing is sintered into cement clinker through kiln hood 3 to cement rotary kiln 24 after cement raw material thermophore 23 preheating, then through kiln head cover to cement clinker storehouse 25.The decomposition gas produced in partition lime rotary kiln calcination process exports to carbon dioxide recovery unit 2 through decomposition gas, Recovery Purifying carbonic acid gas, recycles available stock, increases economic benefit.Coal dust in coal dust feed bin 12 enters the annular materials space of partition coke rotary kiln 16 through charging ring 5, and coal dust is at annular materials passage destructive distillation coke.Coke enters coke dumper 25 through discharging ring, and the coke powder burner that in coke dumper, coke sends into cement rotary kiln 24 by the road makes fuel.The carbonizing gas of retort process enters oil-gas separator 13 through carbonizing gas outlet, and isolated gas stores the fuel making fuel burner nozzle to gas holder through pneumatic outlet, the coal tar separated is to the further processing and utilization of coal tar storage tank.Useless flue gas in partition lime rotary kiln 4 and partition coking rotary kiln 16 kiln thorax generates electricity to cogeneration unit 9 through kiln hood 3, makes full use of the waste heat of flue gas.Two cement rotary kilns 24 hocket calcining and preheating, and two cement raw material thermophore 23 hocket accumulation of heat and heat release preheated air.When left side cement rotary kiln 24 is calcined, the air that gas blower 22 bloats enters the cement raw material thermophore preheating in left side through air T-valve 21, air after preheating enters the combustion-supporting burning calcine cement of left side cement rotary kiln, flue gas enters right side cement rotary kiln preheating material through kiln head cover 8, then arrives right side cement raw material thermophore accumulation of heat.Exothermic flue gas discharges to exhaust emission system 19 through right side cement raw material thermophore air inlet/outlet and waste gas T-valve 20.Commutate after running for some time, according to flue-gas temperature or the temporally Separation control commutation of heat accumulating type cement raw material exhanst gas outlet.Switch operation is realized by the action of each valve and T-valve.
Embodiment 2
Another embodiment of the present invention as shown in Figure 2, comprise two dicyclo partition lime rotary kilns 27, two dicyclo partition coking rotary kilns 31, cement rotary kiln 24, exhaust emission system 19 and cement ingredient equipment, two dicyclo partition lime rotary kilns are communicated with by kiln head cover 8, and two dicyclo partition coking rotary kilns are communicated with by kiln head cover 8.Every platform dicyclo partition lime rotary kiln is furnished with Wingdale feed bin 1, lime cooling storehouse 7 and two socle lime stone thermophore 29.Every platform dicyclo partition coking rotary kiln is furnished with coal dust feed bin 12, coke dumper 17 and two coal dust thermophore 30.Cement rotary kiln is provided with raw meal proportioning device 10 and cyclone preheater group 28.As shown in Figure 3, dicyclo partition lime rotary kiln and dicyclo partition coking rotary kiln are made up of the resistance to material of coaxial mounted inner ring 34, middle resistance to material 39, the resistance to material 37 of outer shroud and kiln hood 36 respectively.The center of the resistance to material of inner ring is kiln thorax 35, is material space 33 between the resistance to material of the resistance to material of inner ring and centre, is outer shroud gas flue 38 between middle resistance to material and the resistance to material of outer shroud, and the outside of the resistance to material of outer shroud is kiln hood.The two ends of outer shroud gas flue are open design, are convenient to flue gas circulation.Be respectively equipped with resistance to material between material space and outer shroud gas flue and support 40.Device is provided with many bends fly-ash separator 32, and Wingdale thermophore is connected with dicyclo partition lime rotary kiln with kiln hood by many bends fly-ash separator, and coal dust thermophore is connected with dicyclo partition coking rotary kiln with kiln hood by many bends fly-ash separator.Wingdale feed bin is by charging ring and material spatial joins, and material space cools storehouse by discharging ring with lime and is connected.Coal dust feed bin is by charging ring and material spatial joins, and material space is connected with coke dumper by discharging ring.Wingdale thermophore top is provided with air inlet/outlet, and air inlet/outlet is connected with gas blower 22 by air T-valve 21, is connected with exhaust emission system 19 by waste gas T-valve 20.Coal dust thermophore top is provided with air inlet/outlet, and air inlet/outlet is connected with gas blower 22 by air T-valve 21, is connected with exhaust emission system 19 by waste gas T-valve 20.Lime cooling storehouse 7 is connected to the opening for feed of cement rotary kiln 24 by raw meal proportioning device 10 and cyclone preheater group, cement rotary kiln is connected with cement clinker storehouse 25, another opening for feed of raw meal proportioning device 10 and cement ingredient equipment connection.Cement rotary kiln is provided with coke powder burner, and coke dumper is connected to coke powder burner.Lime rotary kiln and coking rotary kiln are respectively equipped with fuel burner nozzle, and fuel burner nozzle is connected with gas holder 15.Kiln head cover 8 is provided with auxiliary burning nozzle 26, to improve flue-gas temperature.Be provided with heat storage in Wingdale thermophore 29 and coal dust thermophore 30, heat storage is ceramic refractory, and the shape of heat storage is spherule.
The operational process of the present embodiment is, limestone material in both sides Wingdale feed bin 1 enters the material space of dicyclo partition lime rotary kiln 27 through charging ring 5, fuel burner nozzle ejection fuel and combustion air, the flue gas produced that burns in kiln thorax conducts heat to material space 33 through kiln thorax 35 and outer shroud gas flue 38, inside and outside two Wingdales in the face of material space heat, limestone calcination is become lime, lime enters lime cooling storehouse 7 through discharging ring 6, enters raw meal proportioning device 10 after cooling in the ratio of processing requirement.In kiln thorax combustion processes, the opening of flue gas through outer shroud gas flue 38 two ends circulates, and realizes the material in Double-side Heating material space 33, improves thermo-efficiency and destructive distillation effect.Cement ingredient equipment sends into auxiliary material to raw meal proportioning device, and auxiliary material comprises carbide slag and clay, also comprises carbonaceous material.Be sintered into cement clinker through kiln hood 3 to cement rotary kiln 24 after cement raw material ball warp cyclone preheater group 28 preheating prepared, then through kiln head cover to cement clinker storehouse 25.Coal dust in both sides coal dust feed bin 12 enters the material space of dicyclo partition coking rotary kiln 31 through charging ring 5, fuel burner nozzle ejection fuel and combustion air, the flue gas produced that burns in kiln thorax conducts heat to material space 33 through kiln thorax 35 and outer shroud gas flue 38, inside and outside two coal dusts in the face of material space heat, by coal dust destructive distillation coke.In kiln thorax combustion processes, the opening of flue gas through outer shroud gas flue 30 two ends circulates, and realizes the coal dust in Double-side Heating material space 33, improves thermo-efficiency and destructive distillation effect.Coke enters coke dumper 17 through discharging ring, and a part of coke makes the fuel of cement rotary kiln coke powder burner.Wherein, the coke processed through dicyclo partition lime rotary kiln is demercuration, desulfurization.
Coal dust is at material space destructive distillation coke.In kiln thorax combustion processes, the opening of flue gas through outer shroud gas flue 38 two ends circulates, and realizes the coal dust in Double-side Heating material space 33, improves thermo-efficiency and destructive distillation effect.Useless flue gas in kiln thorax carries out alternately accumulation of heat by two thermophore, makes full use of the waste heat of flue gas.The decomposition gas produced in calcination process exports to carbon dioxide recovery unit 2 through decomposition gas, Recovery Purifying carbonic acid gas, recycles available stock, increases economic benefit.Coke enters coke dumper 27 through discharging ring, and the lime of two partition lime rotary kiln enters dosing device and mixing ball equipment 11 by the road, and the ratio of adjustment batching and lime is carried out mixing pressure ball and prepared cement raw material.The carbonizing gas of retort process enters oil-gas separator 13 through carbonizing gas outlet, and isolated gas makes fuel through pneumatic outlet to gas holder storage, and the coal tar separated is to the further processing and utilization of coal tar storage tank.
Two dicyclo partition lime rotary kilns 27 and Wingdale thermophore 29 hocket and calcine and preheating, when left side dicyclo partition lime rotary kiln is calcined, the air that gas blower 22 bloats enters the Wingdale thermophore preheating in left side through air T-valve 21, air after preheating enters the combustion-supporting burning calcined limestone of left side dicyclo partition lime rotary kiln, flue gas enters right side dicyclo partition lime rotary kiln preheating material through kiln head cover 8, then arrives right side Wingdale thermophore accumulation of heat.Exothermic flue gas discharges to exhaust emission system 19 through the air inlet/outlet of right side Wingdale thermophore and waste gas T-valve 20.Commutate after running for some time, according to flue-gas temperature or the temporally Separation control commutation of exhanst gas outlet.Switch operation is realized by the action of each valve and T-valve.Equally, two dicyclo partition coking rotary kilns 31 and coal dust thermophore 30 hocket and calcine and preheating, when left side dicyclo partition coking calcined by rotary kiln, the air that gas blower 22 bloats enters the coal dust thermophore preheating in left side through air T-valve 21, air after preheating enters left side dicyclo partition coking rotary kiln combustion-supporting burning destructive distillation coal dust, flue gas enters right side dicyclo partition coke preheating in rotary kiln raw material through kiln head cover 8, then arrives right side coal dust thermophore accumulation of heat.Exothermic flue gas discharges to exhaust emission system 19 through the air inlet/outlet of right side coal dust thermophore and waste gas T-valve 20.Commutate after running for some time, according to the flue-gas temperature or the temporally Separation control commutation that store exhanst gas outlet.Switch operation is realized by the action of each valve and T-valve.
Claims (14)
1. produce the rotary kiln device of cement for one kind, comprise lime rotary kiln, coking rotary kiln, cement rotary kiln (24), described lime rotary kiln is provided with Wingdale feed bin (1) and lime cooling storehouse (7), described coking rotary kiln is provided with coal dust feed bin (12) and coke dumper (17), and described cement rotary kiln is provided with raw meal proportioning device (10), raw material preliminary heating device and cement clinker storehouse (25); Wingdale feed bin is connected with lime bin by lime rotary kiln, coal dust feed bin is connected with coke dumper by coking rotary kiln, it is characterized in that: described lime cooling storehouse is connected with cement rotary kiln with raw material preliminary heating device by raw meal proportioning device, and cement rotary kiln is connected with cement clinker storehouse; Described cement rotary kiln is provided with burner (18), and described coke dumper is connected to burner; Described lime rotary kiln and coking rotary kiln are respectively equipped with burner, and described burner is connected with gas holder (15).
2. the rotary kiln device of production cement according to claim 1, it is characterized in that: described lime rotary kiln is partition lime rotary kiln (4) or dicyclo partition lime rotary kiln (27), described coking rotary kiln is partition coking rotary kiln (16) or dicyclo partition coking rotary kiln (31).
3. the rotary kiln device of production cement according to claim 2, it is characterized in that: described partition lime rotary kiln and partition coking rotary kiln are made up of coaxial mounted inner ring and outer shroud respectively, interior Ring current distribution is kiln thorax, is annular materials passage between inner ring and outer shroud; Described Wingdale feed bin (1) is by charging ring and annular materials expanding channels, and described annular materials passage cools storehouse (7) by discharging ring with lime and is connected; Described coal dust feed bin (12) is by charging ring and annular materials expanding channels, and described annular materials passage is connected with coke dumper (17) by discharging ring.
4. the rotary kiln device of production cement according to claim 3, it is characterized in that: described partition lime rotary kiln (4) is provided with carbon dioxide recovery unit (2), the charging ring (5) of described partition lime rotary kiln (4) is provided with decomposition gas outlet, and described decomposition gas outlet is connected to carbon dioxide recovery unit; Described partition coking rotary kiln (16) is provided with oil-gas separator (13), coal tar storage tank (14) and gas holder (15), and the reinforced of described partition coking rotary kiln is equipped with carbonizing gas outlet; Described carbonizing gas outlet is connected to oil-gas separator, and the pneumatic outlet of described oil-gas separator is connected to gas holder, and liquid exit is connected to coal tar storage tank.
5. the rotary kiln device of production cement according to claim 4, it is characterized in that: described carbon dioxide recovery unit (3) is provided with purifying carbon dioxide equipment, carbonic acid gas cooling apparatus and carbon dioxide storage tank, purifying carbon dioxide equipment, carbonic acid gas cooling apparatus are connected successively with carbon dioxide storage tank; Described decomposition gas outlet and purifying carbon dioxide equipment connection.
6. the rotary kiln device of production cement according to claim 4, it is characterized in that: described cement rotary kiln (24) is two, described raw material preliminary heating device is two cement raw material thermophore (23), and the kiln thorax of two cement rotary kilns is communicated with by kiln head cover (8); Described device is provided with ball equipment (11) processed, and the top of described cement raw material thermophore (23) is provided with air inlet/outlet; Described lime cooling storehouse (7) is connected with two cement raw material thermophore with ball equipment (11) processed by raw meal proportioning device (10), and cement raw material preheater is connected with cement rotary kiln by kiln hood (3); Described air inlet/outlet is connected with gas blower (22) by air T-valve (21), is connected with exhaust emission system (19) by waste gas T-valve (20).
7. the rotary kiln device of production cement according to claim 4, is characterized in that: described device is provided with cogeneration unit (9), and described partition lime rotary kiln (4) is connected with cogeneration unit with partition coking rotary kiln (16); Described cogeneration unit comprises waste heat boiler, steam turbine and generating set; Steam coils established by waste heat boiler, and steam coils is connected with steam turbine, and steam turbine is coaxially connected with generating set.
8. the rotary kiln device of production cement according to claim 2, is characterized in that: described dicyclo partition lime rotary kiln (27) and dicyclo partition coking rotary kiln (31) are made up of the resistance to material of coaxial mounted inner ring (34), middle resistance to material (39), the resistance to material of outer shroud (37) and kiln hood (36) respectively; The center of the resistance to material of inner ring is kiln thorax (35), and being material space (33) between the resistance to material of the resistance to material of inner ring and centre, is outer shroud gas flue (38) between middle resistance to material and the resistance to material of outer shroud, and the outside of the resistance to material of described outer shroud is kiln hood; Be respectively equipped with resistance to material between described material space and outer shroud gas flue and support (40).
9. the rotary kiln device of production cement according to claim 8, it is characterized in that: described dicyclo partition lime rotary kiln (27) and dicyclo partition coking rotary kiln (31) are respectively two, two dicyclo partition lime rotary kilns are communicated with by kiln head cover (8), and two dicyclo partition coking rotary kilns are communicated with by kiln head cover (8); Every platform dicyclo partition lime rotary kiln is furnished with Wingdale feed bin (1), lime cooling storehouse (7) and two socle lime stone thermophore (29), and every platform dicyclo partition coking rotary kiln is furnished with coal dust feed bin (12), coke dumper (17) and two coal dust thermophore (30); Described Wingdale thermophore is connected with dicyclo partition lime rotary kiln by kiln hood, and described coal dust thermophore is connected with dicyclo partition coking rotary kiln by kiln hood; Described Wingdale feed bin is by charging ring and material spatial joins, and described material space cools storehouse by discharging ring with lime and is connected; Described coal dust feed bin is by charging ring and material spatial joins, and described material space is connected with coke dumper by discharging ring; Described Wingdale thermophore top is provided with air inlet/outlet, and described air inlet/outlet is connected with gas blower (22) by air T-valve (21), is connected with exhaust emission system (19) by waste gas T-valve (20); Described coal dust thermophore top is provided with air inlet/outlet, and described air inlet/outlet is connected with gas blower (22) by air T-valve (21), is connected with exhaust emission system (19) by waste gas T-valve (20).
10. the rotary kiln device of production cement according to claim 9, is characterized in that: be provided with heat storage in described Wingdale thermophore (29) and coal dust thermophore (30), described heat storage is ceramic refractory or ferrous materials; The shape of described heat storage is spherule or cellular polyhedron.
The rotary kiln device of 11. production cement according to claim 9, it is characterized in that: described device is provided with cyclone preheater group (28), described lime cooling storehouse (7) is connected to the opening for feed of cement rotary kiln (24) by raw meal proportioning device (10) and cyclone preheater group.
The rotary kiln device of 12. production cement according to claim 9, it is characterized in that: described device is provided with many bends fly-ash separator (32), described Wingdale thermophore is connected with dicyclo partition lime rotary kiln with kiln hood by many bends fly-ash separator, and described coal dust thermophore is connected with dicyclo partition coking rotary kiln with kiln hood by many bends fly-ash separator.
The rotary kiln device of 13. production cement according to claim 1, is characterized in that: described burner burner is solid fuel burner, liquid fuel burner or geseous fuel burner.
The rotary kiln device of 14. production cement according to claim 6 or 9, is characterized in that: described kiln head cover (8) is provided with auxiliary burning nozzle (26).
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| CN105884223A (en) * | 2016-04-14 | 2016-08-24 | 石家庄新华能源环保科技股份有限公司 | Cement production device capable of recovering carbon dioxide |
| CN107084616A (en) * | 2017-03-30 | 2017-08-22 | 郭树成 | A kind of rotary system for manufacturing carbide raw material |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
| CN114682068A (en) * | 2022-04-02 | 2022-07-01 | 华中科技大学 | External combustion type carbon dioxide capture system for cement kiln |
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| CN102574741A (en) * | 2009-10-20 | 2012-07-11 | 三菱综合材料株式会社 | Methods and systems for recovery of CO2 gas in cement-manufacturing facilities, and processes for manufacturing cement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105884223A (en) * | 2016-04-14 | 2016-08-24 | 石家庄新华能源环保科技股份有限公司 | Cement production device capable of recovering carbon dioxide |
| CN107084616A (en) * | 2017-03-30 | 2017-08-22 | 郭树成 | A kind of rotary system for manufacturing carbide raw material |
| CN107084616B (en) * | 2017-03-30 | 2019-04-12 | 郭树成 | A kind of rotary system manufacturing carbide raw material |
| CN107673637A (en) * | 2017-12-01 | 2018-02-09 | 河南中蓝新材料科技有限公司 | The suspension roasting device and its production technology of a kind of powdery active lime |
| CN114682068A (en) * | 2022-04-02 | 2022-07-01 | 华中科技大学 | External combustion type carbon dioxide capture system for cement kiln |
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| CN105347702B (en) | 2017-06-27 |
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