CN110183122B - System and method for preparing cementing material based on industrial waste heat cooperative disposal of solid waste - Google Patents
System and method for preparing cementing material based on industrial waste heat cooperative disposal of solid waste Download PDFInfo
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- CN110183122B CN110183122B CN201910424030.8A CN201910424030A CN110183122B CN 110183122 B CN110183122 B CN 110183122B CN 201910424030 A CN201910424030 A CN 201910424030A CN 110183122 B CN110183122 B CN 110183122B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a system and a method for preparing a gelled material by cooperatively treating solid waste based on industrial waste heat, wherein the type and the proportion of the solid waste are selected according to the composition of the gelled material; pouring the mixed solid waste into a preheating pulverizer for pulverizing and preheating; conveying the crushed and preheated solid waste into a calcining chamber for calcining; discharging after calcining; high-temperature waste gas generated in the calcining process enters the crushing chamber through an outlet of the preheating crusher and the crushing blade respectively to preheat solid waste. The waste heat in the high-temperature tail gas and the high-temperature steel slag is utilized to preheat and carbonize various solid wastes in the grinding process, so that the activity of the solid wastes is improved, the resource utilization of the solid wastes is realized, the high-temperature tail gas can be cooled, and the energy conservation and emission reduction are realized.
Description
Technical Field
The invention belongs to the technical field of industrial solid waste high-temperature treatment, and particularly relates to a system and a method for preparing a cementing material by cooperatively treating solid waste based on industrial waste heat.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The rapid development of economy and the rapid advancement of industry in China promote the development of modern construction and improve the living standard of people, and a comfortable environment increasingly becomes the living requirement of people. The industrial development consumes a large amount of resources, and simultaneously produces a large amount of industrial solid waste and high-temperature waste gas, the high-temperature waste gas generally needs to be purified by using waste gas treatment equipment and then can be discharged, but the process of the general waste gas treatment equipment requires that the gas temperature cannot be too high, so the waste gas with higher temperature needs to be cooled, the cooling mode of the waste gas generally comprises two modes of direct contact cooling and indirect contact cooling, the direct contact cooling is that the flue gas is directly contacted with a cooling medium, and heat exchange is carried out, for example, spray cooling is carried out, and a convection spray mode is adopted for cooling; the method is simple and easy to implement, the equipment cost and the operation cost are low, but the gas flow is increased, and the capacity of subsequent equipment is increased. The indirect contact cooling is that the flue gas does not directly contact with a cooling medium, generally adopts a heat exchanger to exchange heat, does not change the property of the flue gas, but has poor cooling effect on the flue gas.
The industrial solid waste comprises blast furnace slag, steel slag, red mud, non-ferrous metal slag, fly ash, coal slag, waste gypsum, carbide slag, salt slurry and the like, the quantity of the industrial solid waste is large, the components are complex, the treatment is difficult, the passive stacking of the industrial solid waste not only occupies a large amount of land, but also contains substances which are easy to dissolve in water, and soil and water bodies are easily polluted by leaching. In addition, the high-temperature steel slag has high temperature but low waste heat utilization efficiency, and is generally treated by a hot splashing method, a tray method, a wind quenching method, a roller method, a granulation method and other methods, wherein the hot splashing method has short cooling time and large treatment capacity, but the reaction is not closed, the environmental pollution is serious, and the stability of the treated steel slag is poor; the tray method has large handling capacity, but has large equipment maintenance amount, easy explosion and serious environmental pollution; the air quenching method, the water quenching method, the roller method and the granulation method are only suitable for liquid slag with good fluidity.
Therefore, the treatment of high-temperature waste gas and industrial solid waste occupies a large amount of manpower, material resources and financial resources, and is difficult to perform resource utilization.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide a system and a method for preparing a cementing material by cooperatively treating solid wastes based on industrial waste heat, wherein the waste heat in high-temperature tail gas and high-temperature steel slag is utilized to preheat and carbonize various solid wastes in the grinding process, so that the activity of the solid wastes is improved, the resource utilization of the solid wastes is realized, the high-temperature tail gas can be cooled, and the energy conservation and emission reduction are realized.
In order to solve the technical problems, the technical scheme of the invention is as follows:
system based on industry waste heat is dealt with admittedly useless preparation cementitious material in coordination includes:
the preheating pulverizer comprises an outer shell, an inner shell, a rotating shaft and a plurality of blades, wherein the inner shell is arranged inside the outer shell, and a cavity is defined between the inner shell and the outer shell; the rotating shaft is horizontally arranged in the inner-layer shell, one end of the rotating shaft extends out of the outer-layer shell and is connected with the motor, the blades are uniformly distributed on the crushing rotating shaft, the rotating shaft and the blades are hollow, a through groove is formed in the position, located in the cavity, of the rotating shaft, and a plurality of through holes are formed in the blades; the upper end of the preheating pulverizer is provided with a material inlet, the lower end of the preheating pulverizer is provided with a material outlet, and a filter screen is arranged at the outlet;
the high-temperature treatment device comprises a heat-insulation shell and a heat-transfer shell, wherein the heat-transfer shell is sleeved inside the heat-insulation shell, a heat-insulation layer is enclosed between the heat-insulation shell and the heat-transfer shell, a calcination chamber is enclosed inside the heat-transfer shell, one end of the calcination chamber is respectively connected with an outlet of the preheating pulverizer and the chamber, and the other end of the calcination chamber is connected with a fuel gas source;
and the waste gas processor is connected with the chamber and used for processing the utilized waste gas.
A large amount of high-temperature waste gas generated by the calcination of the solid waste in the calcination chamber respectively enters the inner-layer shell through the material outlet of the preheating pulverizer and sequentially passes through the chamber, the hollow rotating shaft and the hollow blade, and the solid waste in the pulverization is preheated. The high-temperature waste gas entering through the hollow blade can be contacted with the solid waste in the process of crushing the solid waste by the blade, and the rotating blade plays a role in stirring, so that the uniform contact of the high-temperature waste gas and the solid waste is more easily realized; and some less solid useless back of adding of particle diameter, generally directly drop in the bottom of preheating the rubbing crusher, be difficult to with the blade contact, the high temperature waste gas that flows out then is difficult to preheat this part solid useless in the follow blade, and the high temperature waste gas that flows in from preheating the rubbing crusher export then can be from up flowing through whole crushing cavity down, and then preheats solid useless better. And if only the high-temperature waste gas is introduced from the bottom of the preheating pulverizer, the uniform distribution of the high-temperature waste gas in the whole preheating pulverizing chamber is difficult to ensure, so that the two parts of the high-temperature waste gas are required to be cooperatively treated.
The solid waste is preheated by using the high-temperature waste gas generated in the calcining process, so that on one hand, the part of the high-temperature waste gas can be cooled, the cooled waste gas can be directly purified by using a waste gas processor, and the equipment investment for cooling the high-temperature waste gas is reduced; in the second aspect, the solid waste is physically activated by high-temperature waste gas, and Al-O bonds and Si-O bonds in molecules are broken under the action of high temperature, so that the gelling activity of the solid waste can be improved; and in the third aspect, the solid waste is preheated, so that the temperature of the solid waste can be increased, the heat input during solid waste calcination is reduced, and energy conservation and emission reduction are realized.
In some embodiments, a partition is disposed in the chamber to divide the chamber into two parts, and the inlet and the outlet of the high-temperature exhaust gas are respectively located at two sides of the partition;
the inside of the rotating shaft is communicated with the chamber on one side of the high-temperature waste gas inlet, and the inner shell is communicated with the chamber on one side of the high-temperature waste gas outlet.
When the structure is adopted, high-temperature waste gas enters the cavity and then enters the inner shell through the rotating shaft and the blade, solid waste is preheated, and cooled waste gas flows to the cavity from the inner shell and flows to the waste gas processor from the waste gas outlet to be processed. The heat in the high-temperature exhaust gas is easier to recover.
In some embodiments, the outlet of the preheating pulverizer is connected with the calcining chamber through a pipeline, and the pipeline is arranged from the preheating pulverizer to the calcining chamber in a downward inclined mode. The crushed materials can be conveniently and smoothly conveyed to the calcining chamber.
Furthermore, the end part of the calcining chamber is provided with a feeding bin which is connected with a preheating pulverizer, and the chamber is communicated with the feeding bin through a pipeline.
High-temperature waste gas generated in the calcining process enters the feed bin and then enters the preheating pulverizer to preheat solid waste, so that heat loss in the calcining cavity in the calcining process can be prevented.
In some embodiments, the filter screen is an automatic screening device, the automatic screening device is a commercially available inertia classifier, and the classifier is used in cooperation with a preheating pulverizer to realize classification of large and small particles according to requirements.
In some embodiments, the high temperature processing device rotates under the action of the rotating device (similar to the rotation of the rotary kiln), the material is fed into the calcining chamber from the feeding bin, and the material does circular motion around the barrel and moves from the high end to the low end under the action of the rotating and tilting device of the high temperature processing device. The material is discharged from a discharge port into a cooling chamber after the calcination process in the calcination chamber. Calcining the cavity inner wall and setting up to screw thread type lifting belt, this screw thread type lifting belt extending direction is unanimous with high temperature processing apparatus rotation direction, can promote the upset material in succession, plays the effect of material mixing.
In some embodiments, the side of the calcining chamber opposite to the preheating pulverizer is provided with a cooling chamber, and the lower end of the cooling chamber is provided with a discharge hole. The cooling chamber can cool the calcined material.
In some embodiments, the system further comprises a waste heat recovery device, the waste heat recovery device comprises an inner cylinder and an outer cylinder, the inner cylinder is sleeved inside the outer cylinder, a heat collection cavity is defined between the inner cylinder and the outer cylinder, the heat collection cavity is connected with the fan through a pipeline, an outlet of the heat collection cavity is connected with an inlet of the cavity through a pipeline, a feed inlet is arranged at the upper part of the inner cylinder, a discharge outlet is arranged at the lower part of the inner cylinder, and the discharge outlet is connected with the.
The steel slag melted at high temperature can be poured into the inner cylinder, cold air is conveyed into the heat collection cavity through the fan, the cold air exchanges heat with the steel slag, the heated cold air is conveyed into the cavity and enters the preheating crusher to preheat solid waste. And directly feeding the cooled steel slag into a calcining chamber, and calcining the cooled steel slag in cooperation with other solid wastes to generate the gelled material with the specific composition. Therefore, when the system is adopted, the high-temperature molten steel slag can be directly utilized.
Furthermore, the inner barrel is internally provided with a stirring paddle which is driven by a motor.
The heat exchange between the steel slag and cold air can be accelerated under the stirring action.
Further, a heat exchanger is arranged in the heat collection cavity.
The heat exchanger can recover waste heat and waste heat, improves the heat energy utilization rate, and is common equipment in the market.
In some embodiments, the system further comprises a carbonization tower in communication with the calcination chamber.
A large amount of CO is generated in the calcining process2The high-temperature tail gas is used for carbonizing the solid waste, and the activity of the solid waste can be effectively improved by combining a pressure control system and a humidity control system of the carbonization tower.
The method for preparing the cementing material based on industrial preheating and synergistic solid waste disposal comprises the following steps:
selecting the type of solid waste and the proportion of the solid waste according to the composition of the cementing material;
pouring the mixed solid waste into a preheating pulverizer for pulverizing and preheating;
conveying the crushed and preheated solid waste into a calcining chamber for calcining; discharging after calcining;
high-temperature waste gas generated in the calcining process enters the crushing chamber through an outlet of the preheating crusher and the crushing blade respectively to preheat solid waste.
In some embodiments, the method further comprises the step of preheating the solid waste by recovering heat from the high-temperature steel slag through cold air.
In some embodiments, the method further comprises the step of introducing high-temperature exhaust gas generated in the calcination process into a carbonization tower to carbonize the solid waste.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-a waste gas processor, 2-a gas collecting pipe, 3-a feeding funnel, 4-a preheating and crushing chamber, 5-a blade, 6-a motor, 7-a rotating shaft, 8-a chamber, 9-a preheating and crushing machine, 10-a filter screen, 11-a discharging funnel, 12-a feeding funnel, 13-a hot air pipeline, 14-a feeding cover, 15-an inner cylinder, 16-an outer cylinder, 17-a heat collecting cavity, 18-a heat processor, 19-a discharging funnel, 20-a hot air pipeline, 21-a hot air pipeline, 22-a carbonization tower, 23-a feeding bin, 24-a high temperature processing device, 25-a heat insulating layer, 26-a heat transfer shell, 27-a combustion chamber, 28-a blower, 29-a natural gas storage tank and 30-a combustion-supporting gas storage tank, 31-blower, 32-fuel pipeline, 33-cooling chamber, 34-discharge port.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, a system for preparing a gelled material based on synergistic treatment of solid waste by industrial waste heat comprises a preheating pulverizer, a high-temperature treatment device, a waste gas processor, a waste heat recovery device and a carbonization tower.
The preheating pulverizer 9 comprises an outer shell, an inner shell, a rotating shaft and a plurality of blades, wherein the inner shell is arranged inside the outer shell, a cavity 8 is defined between the outer shell and the inner shell, and a preheating pulverizing chamber 4 is arranged inside the inner shell; the rotating shaft 7 is horizontally arranged in the inner-layer shell, one end of the rotating shaft extends out of the outer-layer shell and is connected with the motor 6, the blades 5 are uniformly distributed on the rotating shaft 7, the rotating shaft 7 and the blades 5 are hollow, a through groove is formed in the position, located in the cavity 8, of the rotating shaft 7, and a plurality of through holes are formed in the blades 5; the upper end of the preheating pulverizer 9 is provided with a material inlet, the material inlet is provided with a feeding funnel 12, the lower end is provided with a material outlet, a filter screen 10 is arranged at the outlet, and a discharging funnel 11 is arranged below the filter screen 10; the filter screen 10 is an automatic screening device. The aperture size can be adjusted according to the requirement.
A partition board is arranged in the chamber 8 to divide the chamber into two parts, and an inlet and an outlet of the high-temperature waste gas are respectively positioned on two sides of the partition board; the inside of the rotating shaft 7 is communicated with the chamber on one side of the high-temperature waste gas inlet, and the inner shell is communicated with the chamber on one side of the high-temperature waste gas outlet.
The high-temperature treatment device 24 comprises a heat preservation shell and a heat transfer shell 26, wherein the heat transfer shell is sleeved inside the heat preservation shell, a heat preservation layer 25 is formed by surrounding the heat preservation shell and the heat transfer shell 26, a calcination chamber is formed by surrounding the heat transfer shell 26, one end of the calcination chamber is connected with an outlet of the preheating pulverizer 9 and the chamber 8, the other end of the calcination chamber is connected with a fuel gas source, the fuel gas source comprises a natural gas storage tank 29 and a combustion-supporting gas storage tank 30, the two storage tanks are both provided with air blowers 28, and the two storage tanks are connected with the calcination chamber through the same fuel.
The heat transfer housing 26 is made of a refractory heat transfer material or heat-resistant alloy steel, and can sufficiently collect heat and reduce heat energy loss.
The tip of calcining the cavity is provided with into feed bin 23, and it is connected with preheating pulverizer 9 to go into feed bin 23, cavity 8 passes through the pipeline and feeds through with going into feed bin 23, and this pipeline sets up to calcining the cavity downward sloping from preheating pulverizer 9. The crushed materials can be conveniently and smoothly conveyed to the calcining chamber.
The side of the calcination chamber opposite to the preheating pulverizer is provided with a cooling chamber 33, and the lower end of the cooling chamber 33 is provided with a discharge port 34. The cooling chamber 33 can cool the calcined material, and the cooled material is discharged in time.
The high-temperature treatment device rotates under the action of the rotating device, materials are fed into the calcining chamber from the feeding bin 23, and do circular motion around the barrel and follow-up motion from the high end to the low end under the action of the rotating and inclining device of the high-temperature treatment device. The material is discharged into the cooling chamber 33 through the calcination process in the calcination chamber at the discharge port. Calcining the cavity inner wall and setting up to screw thread type lifting belt, this screw thread type lifting belt extending direction is unanimous with high temperature processing apparatus rotation direction, can promote the upset material in succession, plays the effect of material mixing.
The waste heat recovery device comprises an inner barrel 15 and an outer barrel 16, wherein the inner barrel 15 is sleeved inside the outer barrel 16, a heat collection cavity 17 is enclosed between the inner barrel 15 and the outer barrel 16, the heat collection cavity 17 is connected with a fan through a pipeline, an outlet of the heat collection cavity 17 is connected with an inlet of the cavity 8 through a hot air pipeline 13, a feeding hole is formed in the upper portion of the inner barrel 15, a feeding cover 14 is arranged on the feeding hole, a discharging hole is formed in the lower portion of the inner barrel, a discharging funnel is arranged on the discharging. Pouring the high-temperature molten steel slag into the inner cylinder 15, conveying cold air into the heat collection cavity 17 through the fan, exchanging heat between the cold air and the steel slag, conveying the heated cold air into the cavity, and feeding the cold air into the preheating crusher to preheat solid waste. And directly feeding the cooled steel slag into a calcining chamber, and calcining the cooled steel slag in cooperation with other solid wastes to generate the gelled material with the specific composition.
A stirring paddle can be arranged inside the inner barrel 15 and driven by a motor. The heat exchange between the steel slag and cold air can be accelerated under the stirring action.
The heat collecting cavity is internally provided with a heat exchanger. The heat exchanger is common equipment in the market. The waste heat and the waste heat can be recovered, and the heat energy utilization rate is improved.
And the waste gas processor 1 is connected with the chamber 8 and is used for collecting the utilized waste gas.
The carbonization tower 22 is communicated with the calcining chamber, and a large amount of CO is generated in the calcining process2The high-temperature tail gas is used for carbonizing the solid waste, and the activity of the solid waste can be effectively improved by combining a pressure control system and a humidity control system of the carbonization tower.
Example 1
The method for preparing the cementing material based on industrial preheating and synergistic solid waste disposal comprises the following steps:
selecting the type of solid waste and the proportion of the solid waste according to the composition of the cementing material; wherein the solid waste types are red mud, steel slag and iron tailings, and the mass ratio is 3:2: 1;
pouring the matched solid waste into a preheating pulverizer to be pulverized, preheated and sieved, and classifying by 100 meshes, 200 meshes and 300 meshes according to requirements;
conveying the crushed, preheated and graded solid waste to a feeding bin to mix with molten steel slag, and calcining the mixture in a calcining chamber for 80 minutes at 1250 ℃; high-temperature waste gas generated in the calcining process enters a crushing chamber through an outlet of a preheating crusher and a crushing blade respectively to preheat solid waste;
discharging after calcining, and cooling to obtain the treated gelled material.
And (3) utilizing cold air to recover heat in the high-temperature steel slag (1450 and 1650 ℃) to preheat solid waste. The inlet air temperature for recovering cold air is 162 ℃, and the air speed is 9 m/s.
And introducing high-temperature waste gas generated in the calcining process into a carbonization tower, and preheating solid waste to prepare a calcination-free product.
The prepared gelled material has the following properties:
TABLE 1
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. System based on industry waste heat is dealt with admittedly useless preparation cementitious material in coordination, its characterized in that: the method comprises the following steps:
the preheating pulverizer comprises an outer shell, an inner shell, a rotating shaft and a plurality of blades, wherein the inner shell is arranged inside the outer shell, and a cavity is defined between the inner shell and the outer shell; the rotating shaft is horizontally arranged in the inner-layer shell, one end of the rotating shaft extends out of the outer-layer shell and is connected with the motor, the blades are uniformly distributed on the crushing rotating shaft, the rotating shaft and the blades are hollow, a through groove is formed in the position, located in the cavity, of the rotating shaft, and a plurality of through holes are formed in the blades; the upper end of the preheating pulverizer is provided with a material inlet, the lower end of the preheating pulverizer is provided with a material outlet, and a filter screen is arranged at the outlet;
the high-temperature treatment device comprises a heat-insulation shell and a heat-transfer shell, wherein the heat-transfer shell is sleeved inside the heat-insulation shell, a heat-insulation layer is enclosed between the heat-insulation shell and the heat-transfer shell, a calcination chamber is enclosed inside the heat-transfer shell, one end of the calcination chamber is connected with the feeding bin, and the other end of the calcination chamber is connected with a fuel gas source;
and the waste gas processor is connected with the chamber and used for processing the utilized waste gas.
2. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 1, wherein: the chamber is divided into two parts by a partition plate, and an inlet and an outlet of the high-temperature waste gas are respectively positioned on two sides of the partition plate;
the inside of the rotating shaft is communicated with the chamber on one side of the high-temperature waste gas inlet, and the inner shell is communicated with the chamber on one side of the high-temperature waste gas outlet.
3. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 1, wherein: the outlet of the preheating pulverizer is connected with the calcining chamber through a pipeline, and the pipeline is arranged from the preheating pulverizer to the calcining chamber in a downward inclination mode.
4. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 3, wherein:
the end part of the calcining chamber is provided with a feeding bin which is connected with a preheating pulverizer, and the chamber is communicated with the feeding bin through a pipeline.
5. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 1, wherein: and a cooling chamber is arranged on one side of the calcining chamber opposite to the preheating pulverizer, and a discharge hole is formed in the lower end of the cooling chamber.
6. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 1, wherein: the device is characterized by further comprising a waste heat recovery device, wherein the waste heat recovery device comprises an inner barrel and an outer barrel, the inner barrel is sleeved inside the outer barrel, a heat collection cavity is defined between the inner barrel and the outer barrel, the heat collection cavity is connected with a fan through a pipeline, an outlet of the heat collection cavity is connected with an inlet of the cavity through a pipeline, a feed inlet is formed in the upper portion of the inner barrel, a discharge outlet is formed in the lower portion of the inner barrel, and the.
7. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 6, wherein: the inner barrel is internally provided with a stirring paddle which is driven by a motor.
8. The system for preparing the cementing material based on the industrial waste heat cooperative disposal of the solid waste as claimed in claim 1, wherein: the device also comprises a carbonization tower which is communicated with the calcining chamber.
9. The method for preparing the cementing material by utilizing the system for preparing the cementing material based on the industrial afterheat synergic disposal of the solid waste according to any one of the claims 1 to 8, characterized in that: the method comprises the following steps: selecting the type of solid waste and the proportion of the solid waste according to the composition of the cementing material;
pouring the mixed solid waste into a preheating pulverizer for pulverizing and preheating;
conveying the crushed and preheated solid waste into a calcining chamber for calcining; discharging after calcining;
high-temperature waste gas generated in the calcining process enters the crushing chamber through an outlet of the preheating crusher and the crushing blade respectively to preheat solid waste.
10. The method of claim 9, wherein: the method also comprises the step of utilizing cold air to recover heat in the high-temperature steel slag to preheat solid waste.
11. The method of claim 9, wherein: and the method also comprises the step of introducing high-temperature waste gas generated in the calcining process into a carbonization tower to carbonize the solid waste.
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| CN1772662A (en) * | 2005-09-30 | 2006-05-17 | 华南理工大学 | Simultaneous sludge method during cement production |
| CN1830867A (en) * | 2006-03-29 | 2006-09-13 | 缪建通 | Cement clinker sintering technology and its equipment |
| CN102656126A (en) * | 2009-12-18 | 2012-09-05 | 蒂森克虏伯伯利休斯股份有限公司 | Method and system for producing cement clinkers |
| CN102153298A (en) * | 2010-12-17 | 2011-08-17 | 张成顺 | Compound technique for producing coal gas by utilizing high-temperature excess heat and high-temperature CO2 waste gas |
| CN104583148A (en) * | 2012-07-04 | 2015-04-29 | 蒂森克虏伯工业解决方案股份公司 | Method and system for producing cement clinker from raw cement mixture |
| CN103896505A (en) * | 2014-03-25 | 2014-07-02 | 同济大学 | Method for adjusting and controlling feeding mode of lime-dried municipal sludge cooperatively treated with cement kiln |
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