CN107677063B - Safe energy-saving clean molded coal drying system - Google Patents
Safe energy-saving clean molded coal drying system Download PDFInfo
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- CN107677063B CN107677063B CN201711177482.8A CN201711177482A CN107677063B CN 107677063 B CN107677063 B CN 107677063B CN 201711177482 A CN201711177482 A CN 201711177482A CN 107677063 B CN107677063 B CN 107677063B
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- temperature flue
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to the field of clean molded coal drying, in particular to a safe energy-saving clean molded coal drying system, which comprises a rotary direct current diffusion type air distributor, wherein an outlet of an internal circulation clean molded coal dryer is connected with a dry dust removal system, the rotary direct current diffusion type air distributor comprises a mixing pipe, one end of the mixing pipe is a high-temperature flue gas inlet, the other end of the mixing pipe is a mixed flue gas outlet, and a low-temperature flue gas inlet is arranged in a tangential direction close to the high-temperature flue gas inlet; the left side and the right side of the interior of the internal circulation clean molded coal dryer are symmetrically provided with a plurality of mutually independent drying cavities, a penetrating passageway is formed in the middle of the internal circulation clean molded coal dryer, an upper air inlet duct, a middle air return duct and a lower air inlet duct are arranged in the passageway from top to bottom, and the middle air return duct is connected with a low-temperature flue gas inlet of the rotary direct current diffusion type air distributor; the outlet of the dry dedusting system is respectively connected with the inlet of the fan A and the low-temperature flue gas inlet of the cyclone direct-current diffusion type air distributor; the invention is safe, efficient, energy-saving and environment-friendly, and is suitable for improving the existing clean briquette drying system.
Description
Technical Field
The invention relates to the field of drying of molding materials, in particular to a safe, energy-saving and clean molded coal drying system.
Background
The clean coal is made up by uniformly mixing coke powder or anthracite powder with dry powder or liquid additive, and adopting a forming machine to make it into flat spherical briquette, and its wet bulb is low in strength, easy to deform and break, so that it needs to control its water content within 3% so as to meet the requirements for transportation, storage and combustion, so that the drying of clean briquette is one of the key procedures.
The existing clean molded coal drying system is shown in fig. 1, and consists of a fan A1, a fan B4, a fan C7, a hot blast stove 2, a wind mixer 3, a dryer 5 and a wet dust collection system 6, wherein high-temperature flue gas at 750-900 ℃ generated by the hot blast stove 2 is adjusted to 90-100 ℃ through natural air distribution and is sent into the dryer 5 through the fan B4, the flue gas is in contact heat exchange with molded coal through an air distribution channel in the dryer 5, the molded coal is dried, the dried high-humidity low-temperature flue gas is further purified by the wet dust collection system 6 after dust is collected through cyclone, the purified flue gas is directly discharged, the generated coal slime is recycled after further treatment, the system is converted from a pellet drying line pressed by coal and mineral powder, and the system is also applied to a certain degree in the molded coal drying production, but has the following problems in the actual production process:
1. the air distribution of the dry flue gas fed into the dryer is carried out by adopting natural air, so that the air distribution quantity is large, the oxygen content of the flue gas entering the dryer is close to 20%, and the briquettes are easy to catch fire in the dryer, so that the temperature in the dryer can only be controlled to be less than 100 ℃, for example, when the temperature is higher than 100 ℃, the condition of burning the briquettes in the dryer can occur;
2. the high-temperature flue gas is uneven in tempering, the temperature of the flue gas generated by the hot blast stove is 750-900 ℃, the temperature needs to be reduced to 90-100 ℃, if natural air at 25 ℃ is adopted for distribution, the air is about 10 times of the amount of the flue gas, the uniformity of the distribution is greatly influenced, the method is limited by the condition of a production field, and the length of a flue gas pipeline after the distribution is limited, so that the temperature of one side of the flue gas is higher than 100 ℃, and the condition that the partial temperature in a dryer is higher to cause coal ball combustion is caused;
3. because the hot flue gas is blown into the dryer by the positive pressure of the fan, the top feeding and bottom discharging dust emission of the dryer are large, and the on-site production environment is bad;
4. the temperature of the waste heat of the dried flue gas is about 65-85 ℃, and the tail flue gas is directly discharged without recycling, so that a large amount of heat energy is lost.
Disclosure of Invention
The invention aims to solve the problems of the conventional clean briquette drying system in the actual production process and provides a safe, energy-saving and clean briquette drying system.
The specific scheme of the invention is as follows: the utility model provides a safe energy-conserving clean moulded coal drying system, including fan A, fan A outlet is connected with the hot-blast furnace, the export flue gas of hot-blast furnace is partly discharged through the relief valve, partly pass through high temperature valve and connect the diffusion formula air distributor of whirl, diffusion formula air distributor outlet connection fan B, fan B connects the clean moulded coal desiccator of inner loop, clean moulded coal desiccator outlet connection dry dedusting system of inner loop, the diffusion formula air distributor of whirl includes a cylindric air mixing pipe, the one end of air mixing pipe is high temperature flue gas entry, the other end is mixed flue gas export, the air mixing pipe is equipped with the low temperature flue gas entry in the tangential direction that is close to high temperature flue gas entry end, the inside cylinder branch dryer that is equipped with at least two-stage radius difference along the total length of air mixing pipe, every branch dryer is arranged with the air mixing pipe is coaxial, from high temperature flue gas entry end to mixed flue gas exit end, the radius one-level of branch dryer increases, every branch dryer is fixed in the air mixing pipe through the bracing piece, every branch dryer has the branch wind hole along circumference evenly distributed; the internal circulation clean briquette drier is provided with a square shell, a plurality of mutually independent drying cavities are symmetrically arranged on the left side and the right side of the interior of the shell, a penetrating passageway is formed between the two rows of drying cavities, an upper air inlet channel, a middle air return channel and a lower air inlet channel are sequentially arranged in the passageway from top to bottom, the upper air inlet channel, the middle air return channel and one side, which is contacted with each drying cavity, of the lower air inlet channel are provided with air distribution plates with air holes, and the drying cavities are communicated with the air channels through the air distribution plates; a distributing groove is arranged at the top of the dryer along the whole length, a guide groove is arranged below the distributing groove corresponding to each drying cavity, and an upper dust hood for collecting flue gas discharged from the top of the drying cavity is arranged below the guide groove; the bottom of the dryer is provided with a discharging hopper connected with the drying cavity below the drying cavity, a discharger is arranged below each discharging hopper, a screening plate is arranged below each discharger, a separation plate is connected below each screening plate, a conveying belt conveyor is arranged below each separation plate, a lower dust hood is arranged along the whole length above each screening plate below each discharging hopper in the passageway, the bottom of the dryer is provided with a support frame, and the middle return air duct is connected with a low-temperature flue gas inlet of the rotary direct current diffusion type air distributor; the dry dust removal system comprises a dust collector, an outlet of the dust collector is connected with a fan C, one part of flue gas at the outlet of the fan C is discharged, and the other part of flue gas is respectively connected with an inlet of a fan A and a low-temperature flue gas inlet of a cyclone direct-current diffusion type air distributor.
The upper air inlet duct and/or the lower air inlet duct is formed by dividing a total air duct into three air ducts which are arranged at the two sides and the middle of the dryer, and the three air ducts are communicated with the total air duct.
The discharging hopper and the discharger are of flexible sealing structures.
The top of the drying cavity is also provided with a material level device for detecting the position of the material in the drying cavity.
The surface of the high-temperature flue gas inlet end of the air mixing pipe is provided with a layer of heat insulation material.
The number of the low-temperature flue gas inlets is 1-4.
The wind dividing holes are in an elongated shape which is axially arranged.
Working principle: the high-temperature flue gas treated by the hot blast stove enters from the high-temperature flue gas inlet end of the mixing pipe of the cyclone and direct-current diffusion type air distributor under the action of the fan B, flows towards the outlet end of the mixing pipe, and flows from the low-temperature flue gas inlet arranged on the tangential direction of the mixing pipe, and is divided into two parts, wherein one part of the high-temperature flue gas passes through a gap of a supporting rod of each grade of air duct to flow towards the outlet end of the mixing pipe, and the other part of the high-temperature flue gas passes through an air dividing hole of the first grade of air duct to flow along the radial direction to be fully mixed with the high-temperature flue gas and then flows towards the outlet end of the mixing pipe, and the temperature of the high-temperature flue gas is greatly reduced after being fully mixed with the low-temperature flue gas through the first grade of air duct; when flowing to the second-stage air duct, the mixed flue gas is mixed with low-temperature flue gas passing through the air distribution holes of the second-stage air duct, so that the mixed flue gas is further cooled; according to the process, the mixed flue gas gradually reduces the temperature of the first stage and the second stage in the process of flowing to the outlet end of the air mixing pipe, and finally reaches an ideal temperature state and enters a dryer; the wet molding materials are sent into a distribution chute at the top of an internal circulation clean molded coal dryer through a conveyor, are uniformly distributed into each drying cavity through a guide chute, slowly move downwards under the action of gravity by controlling the discharge amount of a discharger below a discharge hopper after the materials are fully distributed in the whole drying cavity, and send conditioned flue gas into an upper air inlet duct and a lower air inlet duct through a fan at the same time, and the flue gas enters each drying cavity through a wind dividing hole; the flue gas temperature and flow of the upper air inlet channel and the lower air inlet channel can be adjusted, and materials in the drying cavity are divided into two processes of quick drying and slow drying by adjusting the temperature and flow of the flue gas: the part above the upper air inlet channel is in a rapid drying process, the flue gas flows upwards after entering the drying cavity from the upper air inlet channel, and finally the flue gas is discharged through the upper dust hood; the part between the lower air inlet channel and the upper air inlet channel is in a slow drying process, the flue gas flow direction at the part is upward flowing after entering the drying cavity from the lower air inlet channel, then is discharged through the middle air return channel, returns to the rotary direct current diffusion type air distribution device for air distribution under the action of the fan B, and circularly enters the upper air inlet channel and the lower air inlet channel; the material after the drying is accomplished to the dry chamber contains powder and shaping material, send into screening board screening by the tripper of discharge hopper below, shaping material falls to the division board in the middle of the screening board from the screening board top, the powder falls to the division board both sides from the screening board below, thereby make shaping material fall into conveyor belt inboard, the powder falls into conveyor belt outside, the flue gas that contains the powder is discharged through lower dust cage under the negative pressure effect, go up dust cage and lower dust cage exhaust dust-laden flue gas and be collected and after the processing powder is directly retrieved and recycle after being collected by the dust collector, the flue gas is carried to fan A's entry end and the low temperature flue gas entry end of cyclone diffusion formula air distributor by cyclic utilization again under fan C's effect.
The invention has the following beneficial effects: 1. the internal circulation clean briquette drier adopts an internal air duct double-side air distribution mode to fully contact the smoke with the materials through an air distribution structure, and has good drying effect; 2. the internal circulation clean molded coal dryer is used for drying materials slowly by arranging the middle air return duct and the lower air inlet duct, so that the materials are uniformly dried, the thermal damage of the conventional dryer is avoided, and the yield of molded materials is improved; 3. the low-humidity smoke exhausted by the air return duct in the internal circulation clean briquette drier is exhausted and then is participated in the smoke circulation again through the rotary direct current diffusion type air distributor, so that energy is saved, the oxygen content of the smoke is reduced, and the safety is improved; 4. cooling and dust collecting the discharged material by using low-temperature wind passing through the lower dust hood; 5. the powder and the molding materials are separated during discharging by arranging the screening plate and the separating plate, so that the environmental pollution caused by independent screening after discharging of the existing dryer is avoided; 6. the cyclone direct current diffusion type air distributor is provided with the multi-stage air distributing cylinders with the air distributing holes, so that high-temperature flue gas and low-temperature flue gas are rapidly and fully mixed, and the cooling speed is greatly improved; meanwhile, the low-temperature flue gas can carry out low-temperature protection on the air mixer along the axial flowing part of the air mixing pipe, so that the damage of local high temperature on the air mixer is avoided.
Drawings
FIG. 1 is a schematic diagram of a prior art clean coal drying system;
FIG. 2 is a schematic illustration of the present invention;
FIG. 3 is a front view of the internal circulation clean briquette dryer of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a view A-A of FIG. 4;
FIG. 6 is a view B-B of FIG. 4;
FIG. 7 is an enlarged view of a portion of the discharge screen section of the internal recycle clean coal dryer;
FIG. 8 is a perspective view of a rotary direct current diffusion type air distributor of the present invention;
fig. 9 is a front view of fig. 8;
in the figure: 1-fan A, 2-hot blast stove, 3-air mixer, 4-fan B, 5-dryer, 6-wet dust collecting system, 7-fan C, 8-rotary direct current diffusion type air distributor, 801-low temperature flue gas inlet, 802-air distributor, 803-high temperature flue gas inlet, 804-heat insulation material, 805-air distribution hole, 806-support bar, 807-mixed flue gas outlet, 808-air mixing pipe, 9-internal circulation clean molded coal dryer, 901-distribution chute, 902-guide chute, 903-shell, 904-upper air inlet channel, 905-drying cavity, 906-middle air return channel, 907-lower air inlet channel, 908-outlet hopper, 909 discharger, 910-screening plate, 911-separator plate, 912-upper dust collecting cover, 913-fast drying section flue gas, 914-material level device, 915-slow drying section flue gas, 916-lower dust collecting cover, 917-support frame, 918-lower dust-containing flue gas, 919-conveying belt conveyor, 920-air distributor plate.
Detailed Description
Referring to fig. 1-9, the embodiment is a safe energy-saving clean coal drying system, which comprises a fan A1, wherein an outlet of the fan A1 is connected with a hot blast stove 2, a part of flue gas at the outlet of the hot blast stove 2 is discharged through a safety valve, the other part of flue gas at the outlet of the hot blast stove 2 is connected with a cyclone diffusion type air distributor 8 through a high temperature valve, the outlet of the cyclone diffusion type air distributor 8 is connected with a fan B4, the fan B4 is connected with an internal circulation clean coal dryer 9, the outlet of the internal circulation clean coal dryer 9 is connected with a dry dedusting system 10, the cyclone diffusion type air distributor 8 comprises a cylindrical air mixing duct 808, one end of the air mixing duct 808 is provided with a high temperature flue gas inlet 803, the other end of the air mixing duct 808 is provided with a low temperature flue gas inlet 801 in a tangential direction close to the high temperature flue gas inlet end, at least two stages of air mixing ducts 802 are arranged along the whole length inside the air mixing duct 808, each stage 802 and the air mixing duct 808 are coaxially arranged, the radius of each stage 802 is increased from the high temperature inlet end to the mixed flue gas outlet end 807, each stage 802 is fixed on a support rod 808, and each stage of the air mixing duct 802 is uniformly distributed along the circumference of the air mixing duct 803; the internal circulation clean briquette drier 9 is provided with a square shell 903, a plurality of mutually independent drying cavities 905 are symmetrically arranged on the left side and the right side in the shell 903, a penetrating passageway is formed between the two rows of drying cavities 905, an upper air inlet duct 904, a middle air return duct 906 and a lower air inlet duct 907 are sequentially arranged in the passageway from top to bottom, the upper air inlet duct 904 and the middle air return duct 906 are respectively provided with an air distribution plate 920 with air holes on one side, which is contacted with each drying cavity 905, of the lower air inlet duct 907, and the drying cavities 905 are communicated with the air channels through the air distribution plates 920; a distribution groove 901 is formed in the top of the dryer 9 along the whole length, a guide groove 902 is formed below the distribution groove 901 and corresponds to each drying cavity 905, and an upper dust hood 912 for collecting flue gas discharged from the top of the drying cavity 905 is arranged below the guide groove 902; a discharge hopper 908 connected with the drying cavity 905 is arranged at the bottom of the dryer 9 below the drying cavity 905, a discharger 909 is arranged below each discharge hopper 908, a screening plate 910 is arranged below each discharger 909, a separation plate 911 is connected below each screening plate 910, a conveying belt conveyor 919 is arranged below each separation plate 911, a lower dust hood 916 is arranged along the whole length of the passageway above each screening plate 910 below each discharge hopper 908, a support frame 917 is arranged at the bottom of the dryer 9, and the middle return air duct 906 is connected with the low-temperature flue gas inlet 801 of the rotary direct current diffusion type air distributor 8; the dry dust removal system 10 comprises a dust collector, an outlet of the dust collector is connected with a fan C7, part of flue gas at the outlet of the fan C7 is discharged, and the other part of flue gas is respectively connected with an inlet of a fan A1 and a low-temperature flue gas inlet 801 of a cyclone and direct-current diffusion type air distributor 8.
In this embodiment, one or both of the upper air inlet duct 904 and the lower air inlet duct 907 is formed by dividing a total air duct into three air ducts arranged at both sides and in the middle of the dryer 9, and the three air ducts are communicated with the total air duct, preferably, the two air ducts are formed by dividing a total air duct into three air ducts at both sides and in the middle of the dryer 9.
The hopper 908 and discharger 909 of the present embodiment are flexible sealing structures.
The top of the drying chamber 905 in this embodiment is further provided with a level indicator 914 for detecting the position of the material in the drying chamber 905.
In this embodiment, a layer of heat insulation material 804 is disposed on the surface of the high temperature flue gas inlet 803 of the air mixing pipe 808.
The number of the low-temperature flue gas inlets 801 in this embodiment is 1 to 4, specifically 2.
The air distribution holes 805 in this embodiment are elongated and arranged along the axial direction.
Claims (7)
1. The utility model provides a safe energy-conserving clean moulded coal drying system, includes fan A, and fan A outlet is connected characterized by with the hot-blast furnace: part of flue gas at the outlet of the hot blast furnace is discharged through a safety valve, the other part of the flue gas is connected with a cyclone and direct current diffusion type air distributor through a high temperature valve, the outlet of the cyclone and direct current diffusion type air distributor is connected with a fan B, the fan B is connected with an internal circulation clean molded coal dryer, the outlet of the internal circulation clean molded coal dryer is connected with a dry dust removal system, the cyclone and direct current diffusion type air distributor comprises a cylindrical air mixing pipe, one end of the air mixing pipe is a high-temperature flue gas inlet, the other end of the air mixing pipe is a mixed flue gas outlet, the air mixing pipe is provided with a low-temperature flue gas inlet in the tangential direction close to the high-temperature flue gas inlet, the inside of the air mixing pipe is provided with at least two stages of cylindrical air distributing pipes with different radiuses along the whole length, each air distributing pipe is coaxially arranged with the air mixing pipe, the radius of each air distributing pipe is increased from the high-temperature flue gas inlet end to the mixed flue gas outlet end, each air distributing pipe is fixed in the air mixing pipe through a supporting rod at one stage, and each air distributing pipe is uniformly distributed with air distributing holes along the circumferential surface; the internal circulation clean briquette drier is provided with a square shell, a plurality of mutually independent drying cavities are symmetrically arranged on the left side and the right side of the interior of the shell, a penetrating passageway is formed between the two rows of drying cavities, an upper air inlet channel, a middle air return channel and a lower air inlet channel are sequentially arranged in the passageway from top to bottom, the upper air inlet channel, the middle air return channel and one side, which is contacted with each drying cavity, of the lower air inlet channel are provided with air distribution plates with air holes, and the drying cavities are communicated with the air channels through the air distribution plates; a distributing groove is arranged at the top of the dryer along the whole length, a guide groove is arranged below the distributing groove corresponding to each drying cavity, and an upper dust hood for collecting flue gas discharged from the top of the drying cavity is arranged below the guide groove; the bottom of the dryer is provided with a discharging hopper connected with the drying cavity below the drying cavity, a discharger is arranged below each discharging hopper, a screening plate is arranged below each discharger, a separation plate is connected below each screening plate, a conveying belt conveyor is arranged below each separation plate, a lower dust hood is arranged along the whole length above each screening plate below each discharging hopper in the passageway, the bottom of the dryer is provided with a support frame, and the middle return air duct is connected with a low-temperature flue gas inlet of the rotary direct current diffusion type air distributor; the dry dust removal system comprises a dust collector, an outlet of the dust collector is connected with a fan C, one part of flue gas at the outlet of the fan C is discharged, and the other part of flue gas is respectively connected with an inlet of a fan A and a low-temperature flue gas inlet of a cyclone direct-current diffusion type air distributor.
2. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the upper air inlet channel and/or the lower air inlet channel is formed by dividing a total air channel into three air channels arranged at the two sides and the middle of the dryer, and the three air channels are communicated with the total air channel.
3. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the discharging hopper and the discharger are of flexible sealing structures.
4. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the top of the drying cavity is also provided with a material level indicator for detecting the position of the material in the drying cavity.
5. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the surface of the high-temperature flue gas inlet end of the air mixing pipe is provided with a layer of heat insulation material.
6. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the number of the low-temperature flue gas inlets is 1-4.
7. The safe, energy-saving and clean coal drying system according to claim 1, characterized in that: the wind dividing holes are in an elongated shape arranged along the axial direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711177482.8A CN107677063B (en) | 2017-11-23 | 2017-11-23 | Safe energy-saving clean molded coal drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711177482.8A CN107677063B (en) | 2017-11-23 | 2017-11-23 | Safe energy-saving clean molded coal drying system |
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| CN107677063B true CN107677063B (en) | 2023-06-16 |
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| CN109579501A (en) * | 2018-11-23 | 2019-04-05 | 张晶晶 | The crushing drying system of sticky fermentative feedstuff of microbe |
| CN117361838B (en) * | 2023-10-16 | 2024-05-14 | 秦皇岛尼科环境科技有限公司 | Sludge heatless drying method based on multidirectional air drying box |
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|---|---|---|---|---|
| FR2090780A5 (en) * | 1970-04-27 | 1972-01-14 | Universal Oil Prod Co | |
| CN101377379A (en) * | 2008-10-08 | 2009-03-04 | 东北电力大学 | Coal ash drying device |
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN104482751A (en) * | 2014-12-11 | 2015-04-01 | 华南农业大学 | Method and device for eliminating thermal inertia of hot air drier |
| CN104776702A (en) * | 2014-01-10 | 2015-07-15 | 神华集团有限责任公司 | Dryer or pyrolyzer |
| CN205402713U (en) * | 2016-02-26 | 2016-07-27 | 中冶华天工程技术有限公司 | Take flue gas stove for blast furnace coal injection of heat accumulation |
-
2017
- 2017-11-23 CN CN201711177482.8A patent/CN107677063B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2090780A5 (en) * | 1970-04-27 | 1972-01-14 | Universal Oil Prod Co | |
| CN101377379A (en) * | 2008-10-08 | 2009-03-04 | 东北电力大学 | Coal ash drying device |
| CN101870897A (en) * | 2010-07-09 | 2010-10-27 | 山东天力干燥设备有限公司 | Process for carrying out strengthening circulation, stage grinding and quality improvement on lignite by utilizing superheated steam and system thereof |
| CN104776702A (en) * | 2014-01-10 | 2015-07-15 | 神华集团有限责任公司 | Dryer or pyrolyzer |
| CN104482751A (en) * | 2014-12-11 | 2015-04-01 | 华南农业大学 | Method and device for eliminating thermal inertia of hot air drier |
| CN205402713U (en) * | 2016-02-26 | 2016-07-27 | 中冶华天工程技术有限公司 | Take flue gas stove for blast furnace coal injection of heat accumulation |
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