CN210036270U - Flue gas recycling and discharging system for air draft drying section and preheating section of chain grate machine - Google Patents
Flue gas recycling and discharging system for air draft drying section and preheating section of chain grate machine Download PDFInfo
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- CN210036270U CN210036270U CN201920841337.3U CN201920841337U CN210036270U CN 210036270 U CN210036270 U CN 210036270U CN 201920841337 U CN201920841337 U CN 201920841337U CN 210036270 U CN210036270 U CN 210036270U
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- 239000003546 flue gas Substances 0.000 title claims abstract description 116
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 238000001035 drying Methods 0.000 title claims abstract description 50
- 238000007599 discharging Methods 0.000 title claims abstract description 10
- 238000004064 recycling Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 206010010904 Convulsion Diseases 0.000 claims abstract description 12
- 230000036461 convulsion Effects 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000008188 pellet Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 148
- 208000028659 discharge Diseases 0.000 description 12
- 239000002912 waste gas Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a flue gas recycling and discharging system for an air draft drying section and a preheating section of a chain grate machine, which comprises a chain grate machine, an upper cover of the chain grate machine, an air box, a circular cooler, an upper cover of the circular cooler, the air box, a backheating air system of the chain grate machine, a backheating air system of the circular cooler and a flue gas discharge processing system; the chain grate machine upper cover divide into dry section of blast air, convulsions dry section, preheat one section and preheat the two-section, its characterized in that: the chain grate machine air boxes are divided into three groups, wherein the air box I corresponds to an air blowing drying section, the air box II corresponds to an air draft drying section and a preheating section, and the air box III corresponds to a preheating section, a second preheating section and a second preheating section; the air box II and the air box III are respectively connected with the chain grate machine heat return air system, the circular cooler heat return air system and the flue gas discharge system through flue gas branch pipes; the utility model has the advantages that: the temperature of the backheating air of the chain grate machine is adjustable, and a part of the flue gas at the preheating section is recycled as cooling air, so that the discharged flue gas amount is reduced, and conditions are created for the accurate control, energy conservation and emission reduction of the pellet production process.
Description
Technical Field
The utility model belongs to the technical field of the production of iron and steel metallurgical industry pellet ore, concretely relates to chain grate machine convulsions drying section and preheats section flue gas recycle and discharge system.
Background
At present, the process of a chain grate machine, a rotary kiln and a circular cooler is one of the main production processes for producing iron ore pellets, the common hot air flow is to divide the chain grate machine into three chambers (three groups) and four sections, and the upper cover of the chain grate machine is divided into four sections, namely a blowing drying section, an air draft drying section, a preheating section and a preheating section, according to the temperature of hot air flow and the mode of penetrating through a material layer; the chain grate machine air boxes corresponding to four sections of the upper cover of the chain grate machine are divided into three groups according to the trend of hot air flow: the first group of air boxes correspond to the forced air drying section, receive cooling waste gas from the upper cover of the third cooling section of the circular cooler and are used as a medium for forced air drying; the second group of bellows corresponds to the air draft drying section and the preheating section, and the flue gas in the air draft drying section and the preheating section is discharged into the atmosphere after being treated by the discharge system; the third group of bellows corresponds to the preheating second section, and hot flue gas of the preheating second section is processed by a back heating air system and then returns to the upper cover of the air draft drying section to be used as a medium for air draft drying after being collected.
The blast drying section is the first process of treating green pellets on a chain grate, the heat source for blast drying is cooling waste gas from the upper cover of the three cold sections of the circular cooler, and hot air from bottom to top passes through a green pellet material layer to primarily remove moisture of the green pellets.
The air draft drying section is a second procedure for processing the green pellets on the chain grate, the heat source for air draft drying is hot flue gas (hereinafter referred to as 'return hot air') from a chain grate heat return fan, hot air flow from top to bottom passes through the green pellet material layer to remove moisture of the green pellets, and the temperature of the air flow serving as the air draft drying heat source is determined according to a pellet test.
The preheating section is a transition link on the chain grate machine, the preheating section is a heat source which is hot waste gas (hereinafter referred to as secondary cooling section waste gas) from an upper cover of a secondary cooling section of the circular cooler, hot gas flow from top to bottom passes through a green ball material layer, residual moisture of green balls is completely removed, and dry balls are heated to be heated as required.
The preheating section is the last procedure for treating the green pellets on a chain grate, hot flue gas from a rotary kiln penetrates through a material layer from top to bottom, dry pellets are preheated for a certain time at a proper temperature, the strength of the dry pellets meets the requirement of entering the kiln, and the flue gas penetrating through the material layer is used as 'return hot air' and is sent to an upper cover of the air draft drying section by a return fan to be used as a heat source.
In the actual production process, under the influence of various factors such as raw material conditions, production operation and the like, the temperature of the flue gas from the preheating second-stage air box is higher or lower, and has a certain difference with the temperature required by air draft drying. When the temperature of the flue gas in the preheating second section is higher, in order to meet the requirement of air draft drying, the temperature is generally reduced by adding a certain amount of ambient air, and the burden of a back-heating air system is increased by adding air; when the temperature of the flue gas in the preheating second section is lower, the requirement of air draft drying cannot be met, the expected green pellet dehydration effect cannot be achieved, the preheating process on the chain grate machine is influenced, so that the process on the chain grate machine is moved backwards, the yield is slightly influenced, the index of the preheated pellets is lower in serious cases, the dust amount is increased, the rotary kiln is formed into rings, and the production stability and the pellet quality are influenced.
In addition, according to the hot air flow, the temperature of the mixed flue gas in the air draft drying section and the preheating section is higher, and the mixed flue gas is directly discharged into the atmosphere, which is waste; and the part of flue gas has larger amount, can be discharged into the atmosphere after being subjected to desulfurization and denitration, and has certain pressure in the aspect of environmental protection. Therefore, the heat of the exhaust drying section and the preheating section of the flue gas is reasonably recycled, and the environmental protection pressure is reduced.
Disclosure of Invention
The utility model aims at providing a chain grate machine convulsions drying section and preheating section flue gas recycle and discharge system for realize accurate control "return air" temperature, satisfy the demand of chain grate machine convulsions drying section to the gentle amount of wind, simultaneously, make full use of flue gas waste heat, the outer volume of discharging fume that reduces.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a flue gas recycling and discharging system for an air draft drying section and a preheating section of a chain grate machine, which comprises a chain grate machine, an upper cover of the chain grate machine, a wind box of the chain grate machine, a circular cooler, an upper cover of the circular cooler, a wind box of the circular cooler, a heat recovery air system of the chain grate machine, a heat recovery air system of the circular cooler and a flue gas discharge processing system; the chain grate machine upper cover divide into blast air drying section, convulsions drying section in proper order along chain grate machine direction of motion, preheat one section and preheat the two-stage process, the cold machine upper cover of ring divide into one cold section, two cold sections and three cold sections, its characterized in that along cold machine direction of motion of ring in proper order: the chain grate machine air boxes are divided into three groups, wherein a first group of air boxes I correspond to an air blowing drying section, a second group of air boxes II correspond to an air blowing drying section and a preheating section of front half section, and a third group of air boxes III correspond to a preheating section of rear half section and a preheating section of rear half section; the second group of air boxes II and the third group of air boxes III are respectively connected with the chain grate machine heat return air system, the circular cooler heat return air system and the flue gas discharge processing system through respective flue gas branch pipes;
the chain grate machine heat return air system comprises a chain grate machine heat return air main pipe, a heat return air dust remover I, a heat return air connecting pipeline I and a heat return fan I, wherein a third group of air boxes III is connected with the chain grate machine heat return air main pipe through a flue gas branch pipe I;
the circular cooler back-heating air system comprises a circular cooler back-heating air main pipe, a back-heating air deduster II, a back-heating fan II, a back-heating air connecting pipeline II and a cooling fan I, wherein the chain grate corresponds to a preheating section of air box II and an air box III, and corresponds to a preheating section of air box III and an air box III at the rear part of the preheating section of air box III and the circular cooler back-heating air main pipe are connected through a flue gas branch pipe II;
the flue gas external emission treatment system comprises an external exhaust flue gas main pipe, a main electric dust collector, an external exhaust flue gas connecting pipeline, a main exhaust fan and a flue gas purification device, wherein a second group of wind boxes II corresponding to an exhaust drying section and a preheating section of the first half section are connected with the external exhaust flue gas main pipe through a flue gas branch pipe III;
a regulating valve I is arranged on a flue gas branch pipe I which is connected with an air box III at the preheating section of the chain grate machine and an air box III at the preheating section of the second section, and an air charging valve I is arranged on a backheating air connecting pipeline I between the outlet of the backheating air dust remover I and the inlet of the backheating fan I.
A regulating valve I is arranged on a flue gas branch pipe II which is connected with an air box II and an air box III at the preheating section of the chain grate machine and an air box III at the rear part of the preheating section II, and a regulating valve II and an air charging valve II are arranged on a backheating air connecting pipeline II between the outlet of the backheating air machine II and the inlet of the cooling air machine I.
A regulating valve I is arranged on a flue gas branch pipe III of an air box II which is connected with a preheating section of the chain grate machine, and an air charging valve II is arranged on an external flue gas connecting pipeline between an outlet of a main electric dust collector and an inlet of a main exhaust fan.
Compared with the prior art, the utility model has the advantages that:
(1) the utility model discloses a grate convulsions drying section and preheating section flue gas recycle and discharge system can change the distribution proportion of flue gas flow direction and high low temperature flue gas through adjusting the aperture of governing valve I on the flue gas branch pipe, reaches the purpose of adjusting mixed flue gas temperature, can control the "back hot wind" temperature to the convulsions drying section upper shield conveniently according to the production needs, has created the condition for pelletizing production process accurate control;
(2) the utility model discloses a grate convulsions drying section and preheating section flue gas recycle and discharge system utilizes a part of hot flue gas as cooling medium, has avoided hot pellet ore to be quenched, has also improved the temperature of a cold section cooling waste gas, can provide more heats for in the rotary kiln, saves the fuel consumption of rotary kiln main burner, has created the condition for the energy-conserving production process of pelletizing;
(3) the utility model discloses a chain grate machine convulsions drying section and preheating section flue gas recycle and discharge system, the flue gas that will preheat one section rear portion bellows through backheating fan I is sent to the chain grate machine upper shield and is used, and the flue gas that will preheat one section anterior bellows through backheating fan II is sent to the ring cold machine as the cooling air, has avoided preheating the whole outer row of one section bellows flue gas, can reduce main dust remover, main air exhauster, gas cleaning device's handling capacity by a wide margin, has created the condition for pelletizing production process emission reduction.
Drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 is a partially enlarged view a of fig. 1.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and fig. 2, the flue gas recycling and discharging system for the induced draft drying section and the preheating section of the chain grate machine of the present invention comprises a chain grate machine 1, a chain grate machine upper cover and a chain grate machine air box, a circular cooler 2, a circular cooler upper cover and a circular cooler air box, a chain grate machine back-heating air system, a circular cooler back-heating air system and a flue gas external discharge processing system; the chain grate machine upper cover divide into air blast drying section 26, convulsions drying section 27 in proper order along chain grate machine 1 direction of motion, preheat one section 28 and preheat two-stage process 29, the cold machine upper cover of ring divide into one cold section, two cold sections and three cold sections, its characterized in that along cold machine 2 direction of motion of ring in proper order: the chain grate machine air boxes are divided into three groups, wherein the first group of air boxes correspond to an air blowing drying section, the second group of air boxes correspond to an air blowing drying section 27 and a preheating section 28 and a front half section, and the third group of air boxes correspond to a preheating section 28 and a preheating section 29; the second group of air boxes II 30 and the third group of air boxes III 31 are respectively connected with the chain grate machine heat return air system, the circular cooler heat return air system and the flue gas discharge processing system through respective flue gas branch pipes;
the chain grate machine backheating air system comprises a chain grate machine backheating air main pipe 3, a backheating air dust remover I4, a backheating air connecting pipeline I5 and a backheating fan I6, wherein a third group of air boxes III 31 are connected with the chain grate machine backheating air main pipe 3 through a flue gas branch pipe I17, an inlet of the backheating air dust remover I4 is connected with the chain grate machine backheating air main pipe 3, an outlet of the backheating air dust remover I4 is connected with an inlet of the backheating fan I6 through the backheating air connecting pipeline I5, and an outlet of the backheating fan I6 is connected with an upper cover of an air draft drying section of the chain grate machine; a regulating valve I20 is arranged on a flue gas branch pipe I17 of an air box III 31 which is connected with the rear section of a preheating section 28 and the rear section of a preheating section 29 of the chain grate machine 1, and an air charging valve I22 is arranged on a return air connecting pipeline I5 between the outlet of a return air dust remover I4 and the inlet of a return air fan I6.
The circular cooler hot air return system comprises a circular cooler hot air return main pipe 7, a hot air return dust remover II 8, a hot air return fan II 9, a hot air return connecting pipeline II 10 and a cooling fan I11, wherein the chain grate machine 1 is correspondingly connected with a first preheating section 28 of bellows II 30 and a second preheating section 28 of bellows III 31 and correspondingly connected with a second preheating section 29 of bellows III 31 through a flue gas branch pipe II 18, the inlet of the hot air return dust remover II 8 is connected with the circular cooler hot air return main pipe 7, the outlet of the hot air return dust remover II 8 is connected with the inlet of the hot air return fan II 9, the outlet of the hot air return fan II 9 is connected with the inlet of the cooling fan I11 through a hot air return connecting pipeline II 10, and the outlet of the cooling fan I11 is connected with a first cooling section bellows 25 of the circular cooler; an adjusting valve I20 is arranged on a flue gas branch pipe II 18 which is connected with an air box II 30 and an air box III 31 of the preheating section 28 of the chain grate machine and an air box III 31 of the rear section of the preheating section 29, and an adjusting valve II 21 and an air charging valve II 24 are arranged on a return air connecting pipeline II 10 between the outlet of a return air fan II 9 and the inlet of a cooling air fan I11.
The flue gas external emission treatment system comprises an external exhaust flue gas main pipe 12, a main electric dust collector 13, an external exhaust flue gas connecting pipeline 14, a main exhaust fan 15 and a flue gas purification device 16, wherein a second group of air boxes II 30 corresponding to an air draft drying section 27 and a preheating section 28 in the front half section are connected with the external exhaust flue gas main pipe 12 through a flue gas branch pipe III 19, the external exhaust flue gas main pipe 12 is connected with an inlet of the main electric dust collector 13, an outlet of the main electric dust collector 13 is connected with an inlet of the main exhaust fan 15 through the external exhaust flue gas connecting pipeline 14, an outlet of the main exhaust fan 15 is connected with an inlet of the flue gas purification device 16, and flue gas at an outlet of the flue gas; a regulating valve I20 is arranged on a flue gas branch pipe III 19 of an air box II 30 connected with a preheating section 28 of the chain grate machine, and an air charging valve II 23 is arranged on an exhaust flue gas connecting pipeline 14 between an outlet of a main electric dust collector 13 and an inlet of a main exhaust fan 15.
Working process
The utility model discloses the working process is as follows:
(1) chain grate machine backheating air system
The part of flue gas of the preheating section 28 of the chain grate machine 1 and the flue gas of the preheating section 29 and most of the air boxes III 31 enter the chain grate machine heat return air main pipe 3 through a flue gas branch pipe I17 to be converged, and the flue gas goes to the upper cover of the air draft drying section 27 of the chain grate machine 1 through a heat return air dust remover I4 and a heat return fan I6 to be used as a heating medium.
(2) Flue gas discharge treatment system
The flue gas of the air box II 30 of the air draft drying section 27 of the chain grate machine 1 and part of the flue gas of the air box II 30 of the front half section 28 of the preheating section enter the external flue gas main discharge pipe 12 through the flue gas branch pipe III 19 to be converged and discharged as waste gas through the main electric dust collector 13, the main exhaust fan 15 and the flue gas purification device 16.
(3) Regenerative air system of circular cooler
The residual flue gas of the preheating first section 28 and the preheating second section 29 of the chain grate machine 1 is mixed by a flue gas branch pipe II 18 of an air box II 30 and an air box III 31, and goes to a cold section air box 25 of the circular cooler 2 through a regenerative air dust remover II 8, a regenerative air fan II 9 and a cooling air fan I11 to be used as cooling air.
Above-mentioned chain grate machine backheat air system, cold quick-witted backheat air system of ring and flue gas outward discharge processing system, according to production needs, through the aperture of adjusting valve I20 on rational regulation flue gas branch pipe I17, flue gas branch pipe II 18 and the flue gas branch pipe III 19, can confirm that chain grate machine 1 preheats the trend of one section 28 and preheats 29 air box flue gases of two-section, switch the distribution ratio of flue gas flow direction and regulation high low temperature flue gas, reach the purpose of control mixed flue gas temperature, thereby the temperature of I6 export flue gas of control backheat fan, make the temperature of the backheat air can adjust according to production needs, create the condition for the accurate control of pelletizing production process.
The utility model discloses utilize the hot flue gas of 1 preheating section of some chain grate machine as the coolant recycle of the cold machine 2 of ring, the hot pellet ore of having avoided getting into the cold machine 2 of ring is quenched, can improve the temperature of the cold machine 2 cold section cooling waste gas of ring, for providing more heats in the rotary kiln, saves the fuel consumption of rotary kiln main burner, can make full use of flue gas waste heat, but the outer flue gas volume of arranging of reducible system again has realistic meaning to pellet production energy saving and emission reduction.
Claims (4)
1. A flue gas recycling and discharging system for an induced draft drying section and a preheating section of a chain grate machine comprises the chain grate machine, an upper cover of the chain grate machine, a wind box of the chain grate machine, a circular cooler, an upper cover of the circular cooler, a wind box of the circular cooler, a heat return air system of the chain grate machine, a heat return air system of the circular cooler and a flue gas discharge processing system; the chain grate machine upper cover divide into blast air drying section, convulsions drying section in proper order along chain grate machine direction of motion, preheat one section and preheat the two-stage process, the cold machine upper cover of ring divide into one cold section, two cold sections and three cold sections, its characterized in that along cold machine direction of motion of ring in proper order: the chain grate machine air boxes are divided into three groups, wherein a first group of air boxes I correspond to an air blowing drying section, a second group of air boxes II correspond to an air blowing drying section and a preheating section of front half section, and a third group of air boxes III correspond to a preheating section of rear half section and a preheating section of rear half section; the second group of air boxes II and the third group of air boxes III are respectively connected with the chain grate machine heat return air system, the circular cooler heat return air system and the flue gas discharge processing system through respective flue gas branch pipes;
the chain grate machine heat return air system comprises a chain grate machine heat return air main pipe, a heat return air dust remover I, a heat return air connecting pipeline I and a heat return fan I, wherein a third group of air boxes III is connected with the chain grate machine heat return air main pipe through a flue gas branch pipe I;
the circular cooler back-heating air system comprises a circular cooler back-heating air main pipe, a back-heating air deduster II, a back-heating fan II, a back-heating air connecting pipeline II and a cooling fan I, wherein the chain grate corresponds to a preheating section of air box II and an air box III, and corresponds to a preheating section of air box III and an air box III at the rear part of the preheating section of air box III and the circular cooler back-heating air main pipe are connected through a flue gas branch pipe II;
the outer processing system of arranging of flue gas include outer exhaust flue gas house steward, main dust remover, outer exhaust flue gas connecting tube, main air exhauster and gas cleaning device, the dry section of corresponding convulsions and preheat a second group bellows II of first half section pass through flue gas branch pipe III with outer exhaust flue gas house steward connect, outer exhaust flue gas house steward with main electric dust remover access connection, main dust remover export through outer exhaust flue gas connecting tube with main air exhauster access connection, main air exhauster export with gas cleaning device access connection, the flue gas of gas cleaning device export is outer to be arranged.
2. The system of claim 1 for recycling and discharging flue gas from the drying section and the preheating section of the air draft of the chain grate machine, wherein the system comprises: a regulating valve I is arranged on a flue gas branch pipe I which is connected with an air box III at the preheating section of the chain grate machine and an air box III at the preheating section of the second section, and an air charging valve I is arranged on a backheating air connecting pipeline I between the outlet of the backheating air dust remover I and the inlet of the backheating fan I.
3. The system of claim 1 for recycling and discharging flue gas from the drying section and the preheating section of the air draft of the chain grate machine, wherein the system comprises: a regulating valve I is arranged on a flue gas branch pipe II which is connected with an air box II and an air box III at the preheating section of the chain grate machine and an air box III at the rear part of the preheating section II, and a regulating valve II and an air charging valve II are arranged on a backheating air connecting pipeline II between the outlet of the backheating air machine II and the inlet of the cooling air machine I.
4. The system of claim 1 for recycling and discharging flue gas from the drying section and the preheating section of the air draft of the chain grate machine, wherein the system comprises: a regulating valve I is arranged on a flue gas branch pipe III of an air box II which is connected with a preheating section of the chain grate machine, and an air charging valve II is arranged on an external flue gas connecting pipeline between an outlet of a main electric dust collector and an inlet of a main exhaust fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920841337.3U CN210036270U (en) | 2019-06-05 | 2019-06-05 | Flue gas recycling and discharging system for air draft drying section and preheating section of chain grate machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920841337.3U CN210036270U (en) | 2019-06-05 | 2019-06-05 | Flue gas recycling and discharging system for air draft drying section and preheating section of chain grate machine |
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| Publication Number | Publication Date |
|---|---|
| CN210036270U true CN210036270U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920841337.3U Withdrawn - After Issue CN210036270U (en) | 2019-06-05 | 2019-06-05 | Flue gas recycling and discharging system for air draft drying section and preheating section of chain grate machine |
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| Country | Link |
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| CN (1) | CN210036270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068224A (en) * | 2019-06-05 | 2019-07-30 | 中冶北方（大连）工程技术有限公司 | The off-gas recovery of grate down-draft drying zone and preheating section utilizes and exhaust system |
| WO2022001109A1 (en) * | 2020-07-01 | 2022-01-06 | 中冶长天国际工程有限责任公司 | Air channeling prevention system for preheating section of chain grate machine and air flow control method therefor |
| RU2797438C1 (en) * | 2020-07-01 | 2023-06-05 | Чжуне Чантянь Интернешнал Энджиниринг Ко., Лтд | Pellet producing system and air flow control method for the specified system |
-
2019
- 2019-06-05 CN CN201920841337.3U patent/CN210036270U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068224A (en) * | 2019-06-05 | 2019-07-30 | 中冶北方（大连）工程技术有限公司 | The off-gas recovery of grate down-draft drying zone and preheating section utilizes and exhaust system |
| CN110068224B (en) * | 2019-06-05 | 2024-04-02 | 中冶北方（大连）工程技术有限公司 | Flue gas recycling and discharging system of air draft drying section and preheating section of chain grate machine |
| WO2022001109A1 (en) * | 2020-07-01 | 2022-01-06 | 中冶长天国际工程有限责任公司 | Air channeling prevention system for preheating section of chain grate machine and air flow control method therefor |
| RU2797438C1 (en) * | 2020-07-01 | 2023-06-05 | Чжуне Чантянь Интернешнал Энджиниринг Ко., Лтд | Pellet producing system and air flow control method for the specified system |
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