CN115839624A - Anti-corrosion acid-resistant smoke exhaust pipeline for calcining kiln and construction method - Google Patents
Anti-corrosion acid-resistant smoke exhaust pipeline for calcining kiln and construction method Download PDFInfo
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- CN115839624A CN115839624A CN202211632971.9A CN202211632971A CN115839624A CN 115839624 A CN115839624 A CN 115839624A CN 202211632971 A CN202211632971 A CN 202211632971A CN 115839624 A CN115839624 A CN 115839624A
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Abstract
The invention discloses an anti-corrosion acid-resistant smoke exhaust pipeline for a calcining kiln and a construction method, wherein the anti-corrosion acid-resistant smoke exhaust pipeline comprises a corrugated ceramic lining, and a metal bent protection plate is arranged on the outer surface of the corrugated ceramic lining; the flue of the kiln is provided with the anti-corrosion acid-resistant smoke exhaust pipeline; the invention greatly improves the corrosion resistance and the acid resistance of the smoke exhaust pipeline system, prolongs the maintenance period and prolongs the service life.
Description
Technical Field
The invention relates to the technical field of welding, in particular to an anti-corrosion acid-resistant smoke exhaust pipeline for a calcining kiln and a construction method.
Background
The calcining kiln is kiln equipment commonly used in industrial production, waste gas is continuously generated in the production process of the calcining kiln and is discharged through a smoke discharge pipeline, the smoke discharge pipeline of the existing calcining kiln is generally made of metal materials, and stainless steel is adopted with good quality; at present, lepidolite, lithium slag and the like need to be calcined in the production process of a lithium battery, a plurality of acidic waste gases are generated in the calcining process of the materials, when the lepidolite is calcined, the acidic waste gases continuously corrode the inner wall of a pipeline in a traditional calcining kiln, the acidic waste gases are corroded for 10-20 days in short and are corroded for 2-3 months in long, the exhaust pipeline is corroded and damaged, waste gases are leaked, the kiln needs to be stopped to maintain and replace the exhaust pipeline, and negative effects are caused on the production progress; in order to improve the corrosion resistance of the pipeline, a corrosion-resistant material is laid on the inner wall of the pipeline in a common method, however, most of the flue and the smoke exhaust pipe of the calcining kiln are narrow in size and cannot enter the pipeline for construction, the smoke exhaust pipe is mostly made of metal round pipes, and an anticorrosive coating is additionally arranged on the pipe wall, so that the operation cannot be performed.
Disclosure of Invention
The invention mainly aims to solve the problems that the smoke exhaust pipeline of the traditional calcining kiln has poor acid and corrosion resistance and short service life, and the increase of anticorrosive lining materials cannot be constructed, and provides an anticorrosive acid-resistant smoke exhaust pipeline for the calcining kiln.
The specific scheme of the invention is as follows: an anti-corrosion acid-resistant smoke exhaust pipeline for a calcining kiln comprises a furnace body, wherein a hearth is arranged in the furnace body, a plurality of flues are respectively arranged on two sides of the furnace body along the length direction of a smoke exhaust segment, the bottom ends of the flues are communicated with the hearth, the top end of each flue is connected with a smoke exhaust pipeline, each smoke exhaust pipeline comprises a corrugated ceramic lining, and a metal bent protection plate is arranged on the outer surface of each corrugated ceramic lining; the corrugated ceramic lining is formed by building a plurality of corrugated ceramic bricks, pre-embedded metal reinforcing members are arranged between the corrugated ceramic bricks at intervals, and the metal bending guard plate is welded with the pre-embedded metal reinforcing members.
Furthermore, the corrugated ceramic bricks are arranged in a staggered manner, and the joints are coated with anticorrosive glue.
Furthermore, the smoke exhaust pipeline comprises a horizontal branch pipe and a vertical branch pipe, the vertical branch pipe comprises a corrugated ceramic lining pipeline built along the vertical direction, and four outer wall surfaces of the corrugated ceramic lining pipeline are provided with metal bent guard plates along the length direction; the horizontal branch pipe comprises a metal bending groove, a lining groove is formed in the metal bending groove along the whole length and is formed by building a plurality of corrugated ceramic bricks, an anti-corrosion cover plate is arranged at the top of the lining groove along the whole length, and a metal bending protection plate is arranged on the top surface of the anti-corrosion cover plate.
Furthermore, a vertical branch pipe is arranged at the top of the furnace body smoke exhaust section corresponding to the outlet of each flue, the vertical branch pipes positioned on the same side are arranged in a row, the top ends of the vertical branch pipes are connected with a horizontal branch pipe, and the bottom of each horizontal branch pipe is provided with a through hole corresponding to each vertical branch pipe; and a connecting pipeline is arranged between the two horizontal branch pipes, one horizontal branch pipe is provided with a main smoke exhaust pipeline, the main smoke exhaust pipeline and the connecting pipeline have the same structure as the anti-corrosion acid-resistant smoke exhaust pipeline, and the outer end of the main smoke exhaust pipeline is connected to an induced draft fan.
Further, main exhaust pipe says that the outer end is equipped with the fan connecting box, and the fan connecting box includes the support frame, and the support frame top is equipped with the bottom plate, and the inside lining box has been built by laying bricks or stones at the bottom plate top, and the top surface of inside lining box is equipped with anticorrosive apron, and anticorrosive apron bottom surface is equipped with ripples pottery inside lining, the side of inside lining box is equipped with the metal guard plate, and the side of inside lining box is equipped with the fan interface.
The invention also provides a construction method of the anti-corrosion acid-resistant smoke exhaust pipeline of the calcining kiln, which comprises the following steps of S1, building corrugated ceramic bricks at the outlet of each flue at the top of the smoke exhaust section of the kiln along the vertical direction to form a vertical branch pipe, communicating the flue hole of the vertical branch pipe with the corresponding flue, and installing a metal bent guard plate on each of the four side surfaces of the outer wall of the vertical branch pipe after building;
s2, after all the vertical branch pipes are manufactured, two horizontal branch pipes are manufactured, the two horizontal branch pipes are respectively positioned at the tops of one row of vertical branch pipes on two sides of a smoke discharging section of the kiln, and the manufacturing process of the horizontal branch pipes is as follows: firstly, manufacturing a metal bending groove with a U-shaped longitudinal section, wherein the length of the metal bending groove is equivalent to the length of a kiln smoke exhaust section, placing the metal bending groove at the top of a corresponding row of vertical branch pipes, arranging a through hole at the bottom surface of the metal bending groove corresponding to each vertical branch pipe, connecting and fixing the metal bending groove and an external metal bending protection plate of each vertical branch pipe, building waved ceramic bricks on the bottom surface and two side walls in the metal bending groove, laying an anticorrosive cover plate at the top of the metal bending groove after building, and arranging a layer of metal bending protection plate on the top surface of the anticorrosive cover plate for protection;
s3, erecting a connecting pipe between the two horizontal branch pipes, wherein a support frame is arranged at the bottom of the connecting pipe and is arranged at the top of the kiln, and the manufacturing method of the connecting pipe is the same as that of the horizontal branch pipes;
and S4, erecting a main smoke exhaust pipeline on one side facing the induced draft fan, wherein the structure and the manufacturing method of the main smoke exhaust pipeline are similar to those of the connecting pipe, and the outer end of the main smoke exhaust pipeline is connected with the top surface of a prefabricated fan connecting box.
Further, in the S1 step, during masonry, staggered joints of the corrugated ceramic bricks are arranged, the cross sections of the vertical branch pipes are rectangular, metal reinforcing members are embedded between the corrugated ceramic bricks at intervals in the masonry process, and the metal bending guard plates and the embedded metal reinforcing members are welded and fixed.
Compared with the prior art, the invention has the following advantages: 1. by improving the kiln smoke exhaust pipeline and adopting the pipeline with stronger corrosion resistance and acid resistance, the corrosion resistance of the smoke exhaust pipeline is improved, so that the smoke exhaust pipeline can adapt to the calcination of lepidolite and lithium slag; 2. the groove is built firstly and then the cover plate is laid on the top by adopting an original building process method, so that the construction is convenient, the anti-corrosion pipeline can be implemented specifically, and the acid resistance and the anti-corrosion performance of the smoke exhaust pipeline are improved practically.
Drawings
FIG. 1 is a front view of a firing kiln of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 isbase:Sub>A view A-A of FIG. 1;
in the figure: 1. a flue opening; 2. a hearth; 3. a flue; 4. a vertical branch pipe; 5. a flue hole; 6. bending the guard plate by metal; 7. wave ceramic bricks; 8. a horizontal branch pipe; 9. a connecting pipe; 10. a main exhaust pipe; 11. the fan is connected with the box; 12. an induced draft fan; 13. and (7) a cover plate.
Detailed Description
Example one
Referring to fig. 1-3, the embodiment provides an anti-corrosion acid-resistant smoke exhaust pipeline for a calcining kiln, which comprises a furnace body, wherein a hearth 2 is arranged in the furnace body, a plurality of flues 3 are respectively arranged on two sides of the furnace body along the length direction of the smoke exhaust segment, the bottom ends of the flues 3 are communicated with the hearth 2, the top end of each flue 3 is connected with a smoke exhaust pipeline, each smoke exhaust pipeline comprises a corrugated ceramic lining, and a metal bending protection plate 6 is arranged on the outer surface of the corrugated ceramic lining. Furthermore, the wavy ceramic lining is formed by building a plurality of wavy ceramic bricks 7, an embedded metal piece is arranged between every two adjacent wavy ceramic bricks 7, and the metal bending protection plate 6 is welded with the embedded metal piece. Furthermore, the corrugated ceramic bricks 7 are arranged in a staggered manner, and the joints are coated with anticorrosive glue.
The smoke exhaust pipeline comprises a horizontal branch pipe 8 and a vertical branch pipe 4, wherein the horizontal branch pipe 8 comprises a bottom plate, a groove is built on the upper surface of the bottom plate along the whole length, the groove is composed of a plurality of corrugated ceramic bricks 7, a cover plate 13 is arranged on the top of the groove along the whole length, and an anticorrosive layer is arranged on the bottom surface of the cover plate 13; the vertical branch pipe 4 comprises a corrugated ceramic lining pipeline built along the vertical direction, and four outer wall surfaces of the corrugated ceramic lining pipeline are provided with metal bending guard plates 6 along the length direction.
Furthermore, a vertical branch pipe 4 is arranged at the top of the furnace body smoke exhaust section corresponding to the outlet of each flue 3, the vertical branch pipes 4 positioned on the same side are arranged into a row, the top ends of the vertical branch pipes are connected with a horizontal branch pipe 8, and the bottom of each horizontal branch pipe 8 is provided with a through hole corresponding to each vertical branch pipe 4; a connecting pipe 9 is arranged between the two horizontal branch pipes 8, one horizontal branch pipe 8 is provided with a main smoke exhaust pipeline 10, the main smoke exhaust pipeline 10 and the connecting pipe 9 are the same as the corrosion-resistant acid-resistant smoke exhaust pipeline in structure, and the outer end of the main smoke exhaust pipeline 10 is connected to an induced draft fan 12. Further, main smoke exhaust pipeline 10 outer end is equipped with fan connecting box 11, and fan connecting box 11 includes the support frame, and the support frame top is equipped with the bottom plate, and the inside lining box has been built by laying bricks or stones to the bottom plate top, and the top surface of inside lining box is equipped with anticorrosive apron 13, and 13 bottom surfaces of anticorrosive apron are equipped with ripples pottery inside lining, the side of inside lining box is equipped with the metal guard plate, and the side of inside lining box is equipped with the fan interface.
Example two
The embodiment is a construction method for reforming a smoke exhaust pipeline system of a traditional calcining kiln, and the specific construction process is as follows: firstly, building corrugated ceramic bricks 7 at the outlet of each flue 3 at the top of a kiln smoke discharge section along the vertical direction to form a vertical branch pipe 4, wherein a flue hole 5 of the vertical branch pipe 4 is communicated with the corresponding flue 3, the corrugated ceramic bricks 7 are arranged in a staggered manner during building, the cross section of the vertical branch pipe 4 is rectangular, metal reinforcing members are pre-embedded between the two corrugated ceramic bricks 7 at intervals in the building process, metal bending protection plates 6 are respectively arranged on four side surfaces of the outer wall of the vertical branch pipe 4 after building, and the metal bending protection plates 6 are welded and fixed with the pre-embedded metal reinforcing members;
after all the vertical branch pipes 4 are manufactured, two horizontal branch pipes 8 are manufactured, the two horizontal branch pipes 8 are respectively positioned at the tops of the row of vertical branch pipes 4 on the two sides of the kiln, and the manufacturing process of the horizontal branch pipes 8 is as follows: firstly, a metal bending groove with a U-shaped longitudinal section is manufactured, the length of the metal bending groove is equal to the length of a kiln, the metal bending groove is placed at the top of a corresponding row of vertical branch pipes 4, a through hole is formed in the bottom surface of the metal bending groove corresponding to each vertical branch pipe 4, the metal bending groove and an external metal bending protection plate 6 of each vertical branch pipe 4 are fixedly connected, then corrugated ceramic bricks 7 are built on the bottom surface and two side walls of the metal bending groove, an anti-corrosion cover plate 13 is laid at the top of the metal bending groove after the building is completed, the anti-corrosion cover plate 13 is made of corrugated ceramic, and a layer of metal bending protection plate 6 is arranged on the top surface of the anti-corrosion cover plate 13 and used as protection;
then a connecting pipe 9 is erected between the two horizontal branch pipes 8, a supporting frame is arranged at the bottom of the connecting pipe 9 and is arranged at the top of the kiln, and the manufacturing method of the connecting pipe 9 is the same as that of the horizontal branch pipes 8;
and finally, erecting a main smoke exhaust pipeline 10 on one side facing the induced draft fans 12, wherein the structure and the manufacturing method of the main smoke exhaust pipeline 10 are similar to those of the connecting pipe 9, the outer end of the main smoke exhaust pipeline 10 is connected with the top surface of a pre-manufactured fan connecting box 11, two sides of the fan connecting box 11 are respectively provided with a fan connecting port, and one of the two induced draft fans 12 is used.
Claims (7)
1. The utility model provides an acidproof exhaust pipe of anticorrosion for calcining kiln, includes the furnace body, is equipped with furnace in the furnace body, and the furnace body section of discharging fume respectively is equipped with a plurality of flue along length direction's both sides, and the flue bottom communicates characterized by with furnace: the top end of each flue is connected with a smoke exhaust pipeline, each smoke exhaust pipeline comprises a corrugated ceramic lining, and the outer surface of each corrugated ceramic lining is provided with a metal bent protection plate; the corrugated ceramic lining is formed by building a plurality of corrugated ceramic bricks, pre-embedded metal reinforcing members are arranged between the corrugated ceramic bricks at intervals, and the metal bending guard plate is welded with the pre-embedded metal reinforcing members.
2. The anti-corrosion acid-resistant smoke exhaust duct for a calcination kiln according to claim 1, characterized in that: the corrugated ceramic bricks are arranged in a staggered manner, and the joints are coated with anticorrosive glue.
3. The anti-corrosion acid-resistant smoke exhaust duct for a calcination kiln according to claim 1, characterized in that: the smoke exhaust pipeline comprises a horizontal branch pipe and a vertical branch pipe, the vertical branch pipe comprises a corrugated ceramic lining pipeline built in the vertical direction, and four outer wall surfaces of the corrugated ceramic lining pipeline are provided with metal bent guard plates in the length direction; the horizontal branch pipe comprises a metal bending groove, a lining groove is formed in the metal bending groove along the whole length and is formed by building a plurality of corrugated ceramic bricks, an anti-corrosion cover plate is arranged at the top of the lining groove along the whole length, and a metal bending protection plate is arranged on the top surface of the anti-corrosion cover plate.
4. The anti-corrosion acid-resistant smoke exhaust duct for a calcination kiln according to claim 3, characterized in that: the top of the furnace body smoke exhaust section is provided with a vertical branch pipe corresponding to the outlet of each flue, the vertical branch pipes positioned on the same side are arranged into a row, the top ends of the vertical branch pipes are connected with a horizontal branch pipe, and the bottom of each horizontal branch pipe is provided with a through hole corresponding to each vertical branch pipe; and a connecting pipeline is arranged between the two horizontal branch pipes, one horizontal branch pipe is connected with a main smoke exhaust pipeline, the main smoke exhaust pipeline and the connecting pipeline have the same structure as the anti-corrosion acid-resistant smoke exhaust pipeline, and the outer end of the main smoke exhaust pipeline is connected to an induced draft fan.
5. The anti-corrosion acid-resistant smoke exhaust duct for a calcination kiln according to claim 4, characterized in that: the main smoke exhaust pipeline outer end is equipped with the fan connecting box, and the fan connecting box includes the support frame, and the support frame top is equipped with the bottom plate, and the inside lining box has been built by laying bricks or stones all around to the bottom plate, and the top surface of inside lining box is equipped with anticorrosive apron, and anticorrosive apron bottom surface is equipped with ripples pottery inside lining, the side of inside lining box is equipped with the metal guard plate, and the side of inside lining box is equipped with the fan interface.
6. The method for constructing an anti-corrosion acid-proof smoke exhaust duct of a calcining kiln according to any one of claims 1 to 5, which is characterized in that: the method comprises the following steps: s1, building corrugated ceramic bricks at the outlet of each flue at the top of a smoke discharging section of a kiln along the vertical direction to form a vertical branch pipe, wherein a flue hole of the vertical branch pipe is communicated with the corresponding flue, and after building is completed, a metal bending guard plate is respectively arranged on each of four side surfaces of the outer wall of the vertical branch pipe;
s2, after all the vertical branch pipes are manufactured, two horizontal branch pipes are manufactured, the two horizontal branch pipes are respectively positioned at the tops of one row of vertical branch pipes on two sides of a smoke discharging section of the kiln, and the manufacturing process of the horizontal branch pipes is as follows: firstly, manufacturing a metal bending groove with a U-shaped longitudinal section, wherein the length of the metal bending groove is equivalent to the length of a kiln smoke exhaust section, placing the metal bending groove at the top of a corresponding row of vertical branch pipes, arranging a through hole at the bottom surface of the metal bending groove corresponding to each vertical branch pipe, connecting and fixing the metal bending groove and an external metal bending protection plate of each vertical branch pipe, building waved ceramic bricks on the bottom surface and two side walls in the metal bending groove, laying an anticorrosive cover plate at the top of the metal bending groove after building, and arranging a layer of metal bending protection plate on the top surface of the anticorrosive cover plate for protection;
s3, erecting a connecting pipe between the two horizontal branch pipes, wherein a support frame is arranged at the bottom of the connecting pipe and is arranged at the top of the kiln, and the manufacturing method of the connecting pipe is the same as that of the horizontal branch pipes;
and S4, erecting a main smoke exhaust pipeline on one side facing the induced draft fan, wherein the structure and the manufacturing method of the main smoke exhaust pipeline are similar to those of the connecting pipe, and the outer end of the main smoke exhaust pipeline is connected with the top surface of a prefabricated fan connecting box.
7. The method for constructing an anti-corrosion acid-proof smoke exhaust pipeline with a calcination kiln as claimed in claim 6, wherein the method comprises the following steps: in the S1 step, during masonry, staggered joints of the corrugated ceramic bricks are arranged, the cross section of each vertical branch pipe is rectangular, metal reinforcing members are embedded between the corrugated ceramic bricks at intervals in the masonry process, and the metal bending guard plates and the embedded metal reinforcing members are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211632971.9A CN115839624A (en) | 2022-12-19 | 2022-12-19 | Anti-corrosion acid-resistant smoke exhaust pipeline for calcining kiln and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211632971.9A CN115839624A (en) | 2022-12-19 | 2022-12-19 | Anti-corrosion acid-resistant smoke exhaust pipeline for calcining kiln and construction method |
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| Publication Number | Publication Date |
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| CN115839624A true CN115839624A (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211632971.9A Pending CN115839624A (en) | 2022-12-19 | 2022-12-19 | Anti-corrosion acid-resistant smoke exhaust pipeline for calcining kiln and construction method |
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| CN (1) | CN115839624A (en) |
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- 2022-12-19 CN CN202211632971.9A patent/CN115839624A/en active Pending
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