CN210399936U - Clean sintering system based on fuel preparation and roasting control - Google Patents
Clean sintering system based on fuel preparation and roasting control Download PDFInfo
- Publication number
- CN210399936U CN210399936U CN201921147933.8U CN201921147933U CN210399936U CN 210399936 U CN210399936 U CN 210399936U CN 201921147933 U CN201921147933 U CN 201921147933U CN 210399936 U CN210399936 U CN 210399936U
- Authority
- CN
- China
- Prior art keywords
- sintering
- flue gas
- system based
- waste heat
- heat recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model discloses a clean sintering system based on fuel is prepared and calcination control, the system includes feeding device, mixing arrangement, high-efficient steam pre-heater, wide belt feeder, curve multiple roll distributing device, the multistage sealed sintering machine of full shield, sintering flue gas recirculation device, flash combustion controlling means, the sintering flue, dust collector, desulphurization unit, cooling device, denitrification facility and waste heat recovery device, the raw materials heats after mixing, the mixture after the heating carries out sintering treatment through carrying, again in proper order through circulation treatment, the dust removal is handled, desulfurization treatment, cooling treatment, denitrification treatment, waste heat recovery carries out after the denitration is accomplished, then discharge through the chimney. Compared with the prior art, the utility model the advantage lie in: the method can greatly reduce the generation amount of sintering waste gas, realize waste heat recovery and utilization, improve the strength of surface layer sintering ore, reduce the cost and reduce the fuel consumption.
Description
Technical Field
The utility model relates to a metallurgical sintering machine production field specifically indicates a clean sintering system based on fuel is prepared and calcination control.
Background
At present, most of sintering machines in the domestic metallurgical industry are in the middle and last stages of the service life of equipment, the equipment condition is generally deteriorated, the air leakage rate is high, the yield and the quality of sintered ores are reduced, the field environment is poor, the energy consumption index is high, and green, environment-friendly and efficient sintering cannot be realized. Moreover, the current national and local environmental protection policies are becoming stricter, and the existing sintering machine equipment generally has the environmental protection control requirements for implementing flue gas post-treatment (denitration, desulfurization and dust removal). The main reasons influencing the productivity and quality of the sintering machine are as follows:
1. the sinter bed has poor air permeability.
The sintering process needs to supply air to the material layer, the combustion reaction of the solid fuel can be carried out, the mixed material layer can obtain necessary high temperature, and the material sintering can be smoothly realized. The sintering productivity can be increased by increasing the amount of air passing through the material bed. However, in the case of a constant suction fan capacity, it is necessary to increase the amount of air passing through the bed in order to reduce the resistance of the material to the passage of the air, known as improving the permeability of the sinter. The mix air permeability actually includes two aspects: one is the air permeability of the ignition sinter layer, which is determined by the physical and chemical properties and the moisture content of the raw materials, and the granulation condition of the mixture, and can be improved by improving the granularity composition of the raw materials and enhancing the preparation of the sinter; the other is the air permeability of the sinter bed after ignition, and the air permeability of the bed changes sharply with the progress of the sintering process. The combustion zone has high temperature and liquefied gas phase, great resistance to airflow and minimum air permeability. The permeability of the sinter bed is an important index for measuring the efficiency of the sintering machine and is one of the key factors for restricting the yield of the sintering machine.
2. Air leakage problem of main machine of sintering machine
The long-term abrasion of a sealing end plate of a sintering machine trolley body causes air leakage between trolleys, the two sides of a lower baffle plate of the trolley are seriously abraded, gap air leakage exists between the trolleys, air leakage exists at a grate pin of the trolley, air leakage and air channeling are caused greatly due to the fact that the trolley deviates, the matching gap of a fixed sliding plate of an elastic sliding plate is large when the trolley deforms, a machine head and a machine tail sealing plate of a machine head collapse caused by trolley deformation and air box partition abrasion, the air leakage of a sintering machine system is serious due to the factors, and the influence on production is particularly prominent.
3. Unreasonable wind and wind control for sintering machine
The phenomena of air robbery and air blowby occur in the main machine due to the large separation distance between the two air boxes, and the air quantity distribution in the sintering process is uneven, thereby influencing the efficiency of the sintering machine.
4. The air leakage of the circular cooler is serious
The bottom seal and the upper seal of the circular cooler are mechanical seals, air leakage on site is serious, crushed materials are sprayed onto the platform, and a large amount of dust exists in air on site, so that great pollution is brought to environmental protection. The upper part of the smoke hood also has certain air leakage, which causes hot air loss in the smoke hood and reduces the exhaust gas temperature of waste heat power generation, thereby influencing the waste heat power generation amount. The cooling effect of the circular cooler is poor, and the temperature of the cooled sinter is too high, thereby polluting the environment.
The problems are technical problems commonly existing in the traditional sintering machine, the production efficiency and the capacity of the sintering machine are limited, the problems are all to be solved, and therefore the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome above technical defect, provide one kind from overall process upgrading optimization such as raw materials batching, compounding, sintering cloth, process sintering, ring type cooling, promote the sintering quality, reduce the sintering energy consumption, improve a clean sintering system based on fuel preparation and calcination control of sintering environment.
In order to solve the technical problem, the utility model provides a technical scheme does: a clean sintering system based on fuel preparation and roasting control comprises a material conveying device, a mixing device, a high-efficiency steam preheater, a wide belt feeder, a curve multi-roller distributor, a fully-shielded multistage sealed sintering machine, a sintering flue gas recirculation device, a flash combustion control device, a sintering flue, a dust removal device, a desulfurization device, a cooling device, a denitration device and a waste heat recovery device, wherein the mixing device is connected and arranged below the material conveying device, the high-efficiency steam preheater is connected and arranged at the side part of the material conveying device, one side of the high-efficiency steam preheater is connected with the wide belt feeder, the curve multi-roller distributor is arranged below the wide belt feeder, the fully-shielded multistage sealed sintering machine is arranged below the curve multi-roller distributor, the sintering flue gas recirculation device is arranged above the fully-shielded multistage sealed sintering machine and the flash combustion control device, the sintering flue gas recirculation device is connected with the dust removal device through a sintering flue, the desulfurization device is arranged on one side of the dust removal device, the cooling device is connected below the desulfurization device, the denitration device is connected to the side portion above the cooling device, the waste heat recovery device is connected to the side portion of the denitration device, and a chimney is arranged on the lower portion of the waste heat recovery device in a connected mode.
Compared with the prior art, the utility model the advantage lie in: a clean sintering system based on fuel preparation and roasting control comprises a material conveying device, a mixing device, a high-efficiency steam preheater, a wide belt feeder, a curve multi-roller distributor, a fully-shielded multistage sealed sintering machine, a sintering flue gas recirculation device, a flash combustion control device, a sintering flue, a dust removal device, a desulfurization device, a cooling device, a denitration device and a waste heat recovery device, wherein the mixing device is connected and arranged below the material conveying device, the high-efficiency steam preheater is connected and arranged at the side part of the material conveying device, one side of the high-efficiency steam preheater is connected with the wide belt feeder, the curve multi-roller distributor is arranged below the wide belt feeder, the fully-shielded multistage sealed sintering machine is arranged below the curve multi-roller distributor, the sintering flue gas recirculation device is arranged above the fully-shielded multistage sealed sintering machine and the flash combustion control device, the sintering flue gas recirculation device is connected with the dust removal device through a sintering flue, the desulfurization device is arranged on one side of the dust removal device, the cooling device is connected below the desulfurization device, the denitration device is connected to the side portion above the cooling device, the waste heat recovery device is connected to the side portion of the denitration device, and a chimney is arranged on the lower portion of the waste heat recovery device in a connected mode.
As an improvement, the fully-shielded multistage-sealed sintering machine adopts a fully-sealed structure and comprises a head sealing device, a tail sealing device and a trolley body sealing device.
As an improvement, the raw materials prepared by the material conveying device sequentially enter a primary conical countercurrent grading cylindrical mixing pelletizer and a secondary conical countercurrent grading cylindrical mixing pelletizer to be mixed and pelletized.
As an improvement, the wide belt feeder is driven by a variable-frequency speed-regulating speed-reducing motor, and the rotating speed of the belt can be adjusted according to the requirement of the mixture.
As an improvement, the high-temperature flue gas at the section 1/3 at the rear part of the sintering flue is pressurized by a large flue at the rear part, a multi-pipe deduster and a small circulating fan, and is circulated to the charge level of the front 2/3 sections of the sintering machine above the trolley of the sintering machine.
The utility model has the advantages that:
1. the technology greatly reduces the generation amount of sintering waste gas and various pollutants (dust and SO) in the waste gas2，NOXEtc.) to reduce energy consumption for exhaust gas reprocessing.
2. The technology utilizes the self-reaction removal of multiple pollutants based on the sintering process, in particular to the removal of carbon monoxide which is higher than the national standard.
3. The sintering waste gas circulation can realize the waste heat recovery and utilization, and the power of the sintering fan 17 is reduced.
4. The sintering waste gas circulating system can improve the strength of the surface layer sintering ore and reduce the fuel consumption.
5. And the full-shielding sealed sintering is adopted, so that the effective air quantity is improved, and the yield of the sinter is improved.
6. Improve the field environment, reduce the oxygen content of the flue gas and create favorable conditions for the emission reaching the standard.
7. The reduction process of the sintering production waste gas NO has NO waste, the dosage of the reducing agent is reduced, and the cost is reduced.
8. The implementation of the multi-pollutant cooperative treatment technology based on the sintering process reduces the occupied area, has short construction period, safe operation and low operation cost, and reduces the comprehensive operation cost.
Drawings
Fig. 1 is a schematic system layout of a clean sintering system based on fuel preparation and calcination control according to the present invention.
As shown in the figure: 1. the device comprises a material conveying device, 2, a mixing device, 3, a high-efficiency steam preheater, 4, a wide belt feeder, 5, a curve multi-roller distributor, 6, a fully-shielded multistage sealed sintering machine, 7, a sintering flue gas recirculation device, 8, a flash combustion control device, 9, a sintering flue, 10, a dust removal device, 11, a desulfurization device, 12, a cooling device, 13, a denitrification device, 14, a waste heat recovery device, 15, a chimney, 16, an igniter, 17, a sintering fan, 18, a cooling fan, 19, a low-temperature section of a circular cooler, 20 and a high-temperature section of the circular cooler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model discloses when concrete implementation, provide a clean sintering system based on fuel is prepared and calcination control, the system includes feeding device 1, mixing arrangement 2, high-efficient steam pre-heater 3, wide belt feeder 4, curve multiple roll distributing device 5, the multistage sealed sintering machine 6 of full shield, sintering flue gas recirculation device 7, flash combustion controlling means 8, sintering flue 9, dust collector 10, desulphurization unit 11, cooling device 12, denitrification facility 13 and waste heat recovery device 14, its characterized in that: the device comprises a mixing device 2, a high-efficiency steam preheater 3, a wide belt feeder 4, a curved multi-roller distributor 5, a fully-shielded multi-roller sintering machine 6, a sintering flue gas recirculation device 7, a flash combustion control device 8, a sintering flue gas recirculation device 7, a sintering flue gas 9, a dust removal device 10, a desulfurization device 11, a cooling device 12, a denitration device 13, a waste heat recovery device 14 and a flue gas recycling device 12, wherein the mixing device 2 is connected below the conveying device 1, the high-efficiency steam preheater 3 is connected and arranged at the side part of the conveying device 1, one side of the high-efficiency steam preheater 3 is connected with the wide belt feeder 4, the curved multi-roller distributor 5 is arranged below the wide belt feeder 4, the sintered flue gas recirculation device 7 is arranged above the curved multi-roller distributor 5, the sintering flue gas recirculation device 7 is connected with the dust removal device 10 through the sintering flue gas 9, the lower part of the waste heat recovery device 14 is connected with a chimney 15.
The fully-shielded multistage-sealed sintering machine 6 adopts a fully-sealed structure and comprises a head sealing device, a tail sealing device and a trolley body sealing device.
The raw materials prepared by the material conveying device 1 sequentially enter a primary conical countercurrent classification cylinder mixing pelletizer and a secondary conical countercurrent classification cylinder mixing pelletizer to be mixed and pelletized.
The wide belt feeder 4 is driven by a variable-frequency speed-regulating speed-reducing motor, and the rotating speed of the belt can be adjusted according to the requirement of the mixture.
And the high-temperature flue gas at the 1/3 section at the rear part of the sintering flue 9 is pressurized by a large flue at the rear part, a multi-pipe dust remover and a small circulating fan and is circulated to the material level of the front 2/3 section sintering machine above the trolley of the sintering machine.
The utility model discloses a theory of operation is: the utility model discloses a clean sintering system based on fuel is prepared and calcination control, from overall process upgrading optimization such as raw materials batching, compounding, sintering cloth, process sintering, ring type cooling, promote the sintering quality, reduce the sintering energy consumption, improve the sintering environment, in order to solve above problem, the technical scheme of the utility model is that:
the first embodiment is as follows:
the biomass particles from the biomass particle bin fall into a batching belt through a spiral scale and a belt conveyor to enter batching, wherein the biomass particles are prepared from wood chips, sawdust, bamboo chips, wood shavings, barley straws, oat straws, wheat straws, rye straws, barley straws, wheat straws, rye straws, corn,The biomass fuel is prepared by drying materials with 35-65% of water, such as rice straws, sorghum straws, corn straws, potato vines, bean stalks, peanut vines and the like, and granulating and molding, and aims to enhance the air permeability of a material layer in a sintering process and strengthen and improve the tissue structure of a sintered material surface, quicklime powder from a quicklime bin is digested by a novel double-shaft spiral digester, falls into a batching belt and enters batching, the used double-shaft spiral digester adopts spiral blades, the internal blades are spirally arranged into a spiral line according to double heads, and the double-shaft blades rotate to have multiple functions and effects of stirring, crushing, caking, self-cleaning and the like, meanwhile, as the double-shaft stirring is adopted, the motion pitch of quicklime is correspondingly compressed to achieve the purpose of complete digestion, as the quicklime is digested in advance, the temperature of a mixture in the quicklime powder digestion process is increased, the digested material has colloid property, the specific surface area is increased by 100 times, the digested material is a good pelletizing agent, the pelletizing effect is obviously improved, ingredients are easy to strengthen the pelletizing effect in primary mixing and secondary mixing, so that the adverse effect of direct addition of quicklime on the primary mixing and the secondary mixing is avoided, the prepared raw materials sequentially enter a primary conical countercurrent grading cylindrical mixing pelletizer and a secondary conical countercurrent grading cylindrical mixing pelletizer to carry out mixing and pelletizing, the used conical countercurrent grading cylindrical mixing pelletizer realizes the change of the stress state of a mixture through the change of the internal structure, the 'pitch' of the mixture motion process is compressed, and the purposes of prolonging the effective mixing and pelletizing time, increasing the effective rolling path of the material and improving the pelletizing effect are achieved; the automatic grading of the granularity of the mixed material is realized by adopting an internal sectional grading technology, so that the aims of outwards moving large-particle materials and returning small-particle materials to pelletization are fulfilled; adopt novel cloth lining technique, thoroughly solve mix the amasss material in machine root portion, realize mixing the recirculation of expecting, improve balling effect and mix quick-witted available power, mix the inside of machine through traditional drum and do benefit to the guide at the pan feeding end and install the positive spiral stock guide additional, install the contrary spiral stock guide of toper additional and improve the balling rate and realize the material and classify, it mixes after the transformation, two mixes the roll path and can improve about 30%, the mixture balling rate can improve more than 10%, raw materials after mixing the balling are sent to sintering machine front portion through the high efficiency belt conveyor and are evaporatedThe steam preheater, wide belt feeder, curve multi-roller distributor are distributed on the sintering machine trolley, the high-efficiency steam preheater is mounted on the circular roller feeder or wide belt feeder and used for heating mixture, said equipment is mounted in the lower portion of original stock bin preheater and can make the temperature of mixture be up to above 60 deg.C, the steam preheater of mixed stock bin is formed from steam-water separator, manual regulating valve, enclosing pipe, steam branch pipe, high-efficiency steam spray head, stainless steel lining plate and small stock bin, the high-temp. steam can be fed into the stock bin enclosing pipe by means of manual regulating system and steam-water separator, and sprayed into the mixture of stock bin by means of every steam spray head, and the mixture can be heated by means of heat conduction The wide belt feeder is driven by a variable frequency speed regulation reducing motor, the rotating speed of the belt can be adjusted according to the requirement of the mixture, the feeding mode has the characteristics of uniform material layer control, no material blockage and good material layer air permeability, the gaps of the rollers of the used curve type high-efficiency multi-roller distributor can be randomly adjusted, generally adopts a gear box structure or a chain structure, adopts slide rail type single-roller single-motor transmission, the two ends of each roller body are embedded in slide rails at two sides, each roller body is provided with an independent transmission system, the gaps of the rollers can be randomly adjusted, the influence of large accumulated adjustment amount caused by a large number of rollers is avoided, and the screen rollers are utilized to the maximum extent, the slope segregation angle of the distributing device can be adjusted, the design of the frame bodies on the two sides of the distributing device is provided with an independent angle adjusting device, a multi-stage transmission system, each roller is independent, the use reliability is high, each roller of the curve multi-roller distributing device is provided with one set of transmission system, the curve multi-roller distributing device is mutually independent, even if one roller is in a problem, the integral use is not influenced, the use reliability is improved, the used fully-shielding multi-stage sealing sintering machine adopts a fully-sealing structure, a head sealing device, a tail sealing device and a trolley body sealing device are arranged, the used head and tail sealing device adopts a flexible magnetic sealing structureA device specially used for plugging the air leakage of the head and the tail of a trolley in the sintering production process, a flexible magnetic sealing device aims to overcome the defects in the prior art, can effectively realize the sealing of the head and the tail of the trolley, reduce the energy consumption and improve the production efficiency of sintering production equipment, a non-air-leakage metal pin shaft is adopted as a grid bar pin of the trolley, a non-air-leakage wear-resistant slideway sliding plate is adopted as a slideway sliding plate of the sintering trolley, the air leakage problem of a sintering machine body and a slideway can be effectively solved by implementing full shielding sealing, the air leakage rate of the sintering machine is greatly reduced, the material layer thickness of the sintering machine is improved, the yield of sintering ore is increased, the field environment is improved, the dust in the region of the sintering machine is reduced, the wind noise problem of the sintering machine due to the air leakage is solved, the noise pollution is eliminated, the sintering environment is optimized, and an air control regulator divides, set up twice elastic sealing plate and multichannel and robbed the wind blocker, realize sintering process with the rational distribution of wind, reduce inefficiently robbing the wind, improve production efficiency, owing to solved the wind of robbing of sintering production process, reduced the vacuum area under the sintering machine, to sintering bellows rational distribution simultaneously, increase substantially sintering output, reduce consumption, used sintering flue gas recirculation device indicates: high-temperature flue gas at 1/3 section at the rear part of a sintering flue is pressurized by a large flue at the rear part, a multi-tube dust collector and a small circulating fan, and circulates to the material level of a front 2/3 section sintering machine above a trolley of the sintering machine, the high-temperature flue gas at the rear half section of the sintering machine is led into a sintering material layer again from a sintering air box and various flue gas branch pipes, low-temperature sensible heat is supplied to the sintering material level through heat exchange and the automatic heat storage action of the sintering material layer, the insufficient heat condition of the upper part and the middle part of the material layer is improved, the utilization of the waste heat of the high-temperature flue gas and the quality of sintering ore are facilitated, meanwhile, organic pollutants such as dioxin, Polycyclic Aromatic Hydrocarbon (PAHs), Volatile Organic Compounds (VOC) and the like in the high-temperature flue gas are decomposed fiercely when passing through the sintering material level above 1300 ℃, NOx is partially destroyed through thermal decomposition, and the pollutants such as dioxin, PAHs, and greatly reduce the total amount of exhaust gas emission, the flash combustion control device is arranged in the sealed cover of the fully-sealed shielded sintering machine, when in sintering production,because of factors such as incomplete combustion of ignition gas, incomplete combustion of solid fuel, reduction of solid C and iron ore, reaction of solid C and water vapor and the like, CO is generated in sintering waste gas to different degrees, the CO in the sintering waste gas can reach 8000mg/Nm3 when actually detected to be high, the flash control device is used for spraying a reducing medium (either coke oven gas or blast furnace gas) on the surface of the fired sintering charge, so that the reducing medium, the generated CO and oxygen around the sintering charge are subjected to a sharp reaction, the atmosphere entering the sintering charge for combustion is controlled, the generation of nitrogen oxide is inhibited, the nitrogen oxide can also react with the nitrogen oxide generated in sintering, the nitrogen oxide is reduced into nitrogen, the discharge amount of the nitrogen oxide is reduced, the cost is low, the sintering flue gas enters a desulfurizing tower after passing through an electric precipitator, the content of sulfur dioxide and carbon monoxide is still high, can not satisfy the new requirement of environmental protection, the event need carry out the fine desulfurization and take off carbon monoxide with the flue gas circulation after the desulfurization to the cold machine department of ring, set up a set of denitration reactor on the cold quick-witted high temperature section 20 upper portion of ring in addition to the produced a large amount of nitrogen oxides of abnormal conditions in the reply sintering production process, the qualified flue gas of environmental protection of emission that makes the production process can last stable always, and the concrete implementation route is: the flue gas after desulfurization treatment is sent to a low-temperature section 19 of the circular cooler by a cooling fan 18, the temperature of a sintering deposit of the circular cooler is used for carrying out the processes of removal and heating, the flue gas is heated by the low-temperature section 19 of the circular cooler and then circulates to a high-temperature section 20 of the circular cooler, and the sintering deposit is used for adsorbing sulfur dioxide in the flue gas; the upper part of the high-temperature section is provided with a denitration reactor, NOx in the flue gas is fully mixed and contacted with CO and other reducing agents in the flue gas, and the NOx and the CO and other reducing agents pass through Fe of the sintered ore deposit2O3The calcium ferrite and the catalyst layer in the reactor react with each other, NOx is effectively removed, the temperature of flue gas after the denitration reactor is between 450-550 ℃ approximately, if the flue gas is directly discharged, a large amount of energy is wasted, so the flue gas needs to be recycled, the flue gas contains a large amount of dust, the requirement of environmental protection discharge is met, a set of dust remover is arranged between a waste heat recovery fan and a waste heat boiler, and the flue gas meeting the new requirement of environmental protection after dust removal is exhausted from a chimney through a draught fan.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (5)
1. The utility model provides a clean sintering system based on fuel is prepared and calcination control, the system includes feeding device (1), mixing arrangement (2), high-efficient steam pre-heater (3), wide belt batcher (4), curve multi-roll distributing device (5), full-shielded multistage sealed sintering machine (6), sintering flue gas recirculation device (7), flash combustion controlling means (8), sintering flue (9), dust collector (10), desulphurization unit (11), cooling device (12), denitrification facility (13) and waste heat recovery device (14), its characterized in that: the device is characterized in that the mixing device (2) is connected and arranged below the conveying device (1), the efficient steam preheater (3) is connected and arranged at the side part of the conveying device (1), one side of the efficient steam preheater (3) is connected with the wide belt feeder (4), the curve multi-roller distributor (5) is arranged below the wide belt feeder (4), the fully-shielded multistage sealed sintering machine (6) is arranged below the curve multi-roller distributor (5), the sintering flue gas recirculation device (7) is arranged above the fully-shielded multistage sealed sintering machine (6) and the flash combustion control device (8), the sintering flue gas recirculation device (7) is connected with the dust removal device (10) through a sintering flue (9), the desulfurization device (11) is arranged at one side of the dust removal device (10), the lower part of the desulfurization device (11) is connected with a cooling device (12), the denitration device is characterized in that the upper side part of the cooling device (12) is connected with a denitration device (13), the side part of the denitration device (13) is connected with a waste heat recovery device (14), and the lower part of the waste heat recovery device (14) is connected with a chimney (15).
2. The clean sintering system based on fuel formulation and firing control as claimed in claim 1, wherein: the fully-shielded multistage-sealed sintering machine (6) adopts a fully-sealed structure and comprises a head sealing device, a tail sealing device and a trolley body sealing device.
3. The clean sintering system based on fuel formulation and firing control as claimed in claim 1, wherein: the raw materials prepared by the material conveying device (1) sequentially enter a primary conical countercurrent grading cylinder mixing pelletizer and a secondary conical countercurrent grading cylinder mixing pelletizer to be mixed and pelletized.
4. The clean sintering system based on fuel formulation and firing control as claimed in claim 1, wherein: the wide belt feeder (4) is driven by a variable-frequency speed-regulating speed-reducing motor, and the rotating speed of the belt can be adjusted according to the requirement of the mixture.
5. The clean sintering system based on fuel formulation and firing control as claimed in claim 1, wherein: and the high-temperature flue gas at the 1/3 section at the rear part of the sintering flue (9) is pressurized by a large flue at the rear part, a multi-pipe dust remover and a small circulating fan and is circulated to the charge level of the front 2/3 sections of sintering machine above the trolley of the sintering machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147933.8U CN210399936U (en) | 2019-07-22 | 2019-07-22 | Clean sintering system based on fuel preparation and roasting control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147933.8U CN210399936U (en) | 2019-07-22 | 2019-07-22 | Clean sintering system based on fuel preparation and roasting control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210399936U true CN210399936U (en) | 2020-04-24 |
Family
ID=70355667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921147933.8U Active CN210399936U (en) | 2019-07-22 | 2019-07-22 | Clean sintering system based on fuel preparation and roasting control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210399936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916011A (en) * | 2021-09-10 | 2022-01-11 | 马鞍山钢铁股份有限公司 | Sintering cooling waste heat micro-positive pressure recovery control system and method |
| CN114317950A (en) * | 2021-12-30 | 2022-04-12 | 河北鑫达钢铁集团有限公司 | Environment-friendly sintering system and sintering method |
-
2019
- 2019-07-22 CN CN201921147933.8U patent/CN210399936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916011A (en) * | 2021-09-10 | 2022-01-11 | 马鞍山钢铁股份有限公司 | Sintering cooling waste heat micro-positive pressure recovery control system and method |
| CN114317950A (en) * | 2021-12-30 | 2022-04-12 | 河北鑫达钢铁集团有限公司 | Environment-friendly sintering system and sintering method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110075680B (en) | Desulfurization, denitrification, dust removal and ultralow emission process and system for producing cement from low-sulfur raw materials | |
| CN110274463A (en) | A kind of pure sintering system and method based on fuel formulations and roasting control | |
| CN102258923A (en) | Method for recycling and reusing tail gas of calcium carbide furnace | |
| CN103344114B (en) | A kind of novel energy-saving emission-reducing sintering machine system and sintering method | |
| CN210399936U (en) | Clean sintering system based on fuel preparation and roasting control | |
| CN114888051B (en) | Slag treatment system and method combining microwave drying and waste heat gas recycling | |
| CN105314894A (en) | Rotary kiln device and method for indirectly producing lime and recycling carbon dioxide | |
| CN108611458B (en) | Method for treating solid waste by rotary hearth furnace | |
| CN102079982B (en) | Production method of formed coke | |
| CN208218697U (en) | A kind of high activity MgO roasting dedicated unit | |
| CN217535480U (en) | Active carbon powder granulation desulfurization system | |
| CN2921740Y (en) | Internal and external heating vertical passway reduction furnace | |
| CN112624637B (en) | High-activity steel slag micro powder preparation system | |
| CN115725835A (en) | Modified sintering treatment method for steel mill waste dust and mud | |
| CN104261700A (en) | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime | |
| CN215713243U (en) | System for improving medium-temperature denitration effect of chain grate machine rotary kiln pellets | |
| CN108483950A (en) | A kind of high activity MgO roasting techniques and its dedicated unit | |
| CN111426208B (en) | Vertical air draft sintering machine and sintering process | |
| CN211651175U (en) | Shaft furnace for semi-coke modification | |
| CN204625479U (en) | A kind of indirect calcination is produced lime, is reclaimed the rotary kiln device of carbonic acid gas | |
| CN204625480U (en) | A kind of rotary kiln device of constant temperature indirect calcination Wingdale | |
| CN210752063U (en) | Calcium circulation desulfurization system based on cement clinker production line | |
| CN210165387U (en) | Calcium carbide furnace purification ash treatment system and calcium carbide production system | |
| CN114061320A (en) | Circulating coupling treatment system for pellet flue gas of chain grate machine, rotary kiln and circular cooler and flue gas treatment process thereof | |
| CN220579348U (en) | Phosphorite shaft furnace roasting production system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |