CN112812786A - Energy-saving coke oven door structure - Google Patents
Energy-saving coke oven door structure Download PDFInfo
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- CN112812786A CN112812786A CN202110157924.2A CN202110157924A CN112812786A CN 112812786 A CN112812786 A CN 112812786A CN 202110157924 A CN202110157924 A CN 202110157924A CN 112812786 A CN112812786 A CN 112812786A
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- door
- furnace door
- oven
- furnace
- coke oven
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- 239000000571 coke Substances 0.000 title claims abstract description 64
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 229910052742 iron Inorganic materials 0.000 claims abstract description 33
- 239000012774 insulation material Substances 0.000 claims abstract description 29
- 239000011449 brick Substances 0.000 claims abstract description 26
- 238000003763 carbonization Methods 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims description 39
- 238000009413 insulation Methods 0.000 claims description 18
- 239000011810 insulating material Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 6
- 238000004939 coking Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B25/00—Doors or closures for coke ovens
- C10B25/02—Doors; Door frames
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to an energy-saving coke oven door structure, which comprises a coke oven door consisting of a door lining brick and a door iron piece, wherein the door iron piece comprises a door body, a door fastener, a door sliding plate, a door knife edge and a door web plate; the surfaces of the furnace door lining bricks, the furnace door frame, the furnace door web plates and the furnace door sliding plates are coated with heat insulation material coatings. The invention effectively reduces the heat dissipation capacity of the furnace end of the carbonization chamber, and achieves the purposes of saving energy, reducing consumption and improving energy utilization rate.
Description
Technical Field
The invention relates to the technical field of coke ovens, in particular to an energy-saving coke oven door structure.
Background
The coke oven as main coking equipment has the characteristics of high energy consumption, great pollution and the like. The coke oven belongs to a high-temperature kiln, and the large surface heat dissipation is one of the reasons of high energy consumption. With the continuous improvement of the national environmental protection requirement, the problems of energy conservation and consumption reduction of the coke oven are increasingly prominent.
The coke oven generally comprises a regenerator, an inclined channel, a combustion chamber, a carbonization chamber, an oven top, other civil engineering foundations, an oven protection iron piece and other auxiliary equipment. A carbonization chamber is arranged between the adjacent 2 combustion chambers, which is a place for converting coal into coke in the coke oven, and the working temperature of the carbonization chamber is about 900-1100 ℃. The coke oven doors are arranged at two ends of the coking chamber and are used for preventing air from entering and raw coke oven gas from overflowing in the coking process and playing a certain role in heat insulation. The large-scale coke oven at present generally adopts the castable precast block of glaze-coated as the furnace gate lining brick, has solved tar infiltration and has clear away the difficult scheduling problem of tar in the production process, but fails to reduce the surface temperature of furnace gate, and the calorific loss of furnace end is great, can lead to the furnace end to appear the phenomenon of producing coke, appearing smoking when pushing away the coke when serious.
In order to reduce the heat dissipation of the oven head of the carbonization chamber and reduce the surface temperature of the oven door, the Chinese patent with the publication number of CN205205071U discloses a lining brick for the oven door of the coke oven, wherein a heat preservation and insulation lining layer is arranged on one side of a casting material precast block close to an oven door frame shell, is made of an aluminum silicate fiber material and is embedded in the casting material precast block, and the heat preservation and insulation performance of the oven door is improved. The Chinese patent application with the application number of 201711401810.8 discloses an energy-saving coke oven door lining brick, wherein the lining brick body is provided with at least one concave hollow structure at the side close to an iron piece of an oven door, the concave hollow structure is in close contact with a web plate to form a hollow structure, and the surface of the web plate, which is in contact with the hollow structure, is coated with heat reflection coating with strong reflectivity, so that the effects of reducing the weight of the lining brick of the oven door and the surface temperature of the door and improving the heat insulation effect are achieved.
However, in the production process of the coke oven, tar easily enters the heat insulation lining through gaps or holes, and after the tar is accumulated for a long time, the heat insulation lining can reduce or even lose the heat insulation effect; and the heat insulation effect is limited due to the influence of the shape and the strength of the furnace door lining brick.
Disclosure of Invention
The invention provides an energy-saving coke oven door structure, which effectively reduces the heat dissipation of a furnace end of a carbonization chamber by a method of coating a heat insulation material coating on the heated surfaces of a furnace door lining brick and a furnace door iron piece, and achieves the purposes of saving energy, reducing consumption and improving energy utilization rate.
In order to achieve the purpose, the invention adopts the following technical scheme:
an energy-saving coke oven door structure comprises a coke oven door consisting of a door lining brick and a door iron piece, wherein the door iron piece comprises a door body, a door fastener, a door sliding plate, a door knife edge and a door web plate; the surfaces of the furnace door lining bricks, the furnace door frame, the furnace door web plates and the furnace door sliding plates are coated with heat insulation material coatings.
The inner surface of the furnace door lining brick contacting with coke and/or the outer surface contacting with the furnace door iron piece are coated with heat insulation material coatings.
The inner surface and/or the outer surface of the furnace door sliding plate and the inner surface and/or the outer surface of the furnace door web plate are/is coated with a thermal insulation material coating respectively.
The coke oven door is provided with an oven protecting iron piece, and the oven protecting iron piece comprises an oven door frame and a protecting plate; the inner surface of the furnace door frame, which is in contact with the raw gas of the carbonization chamber, is coated with a heat insulation material coating.
The coke oven door is a side door of a top-mounted coke oven machine, and the top of the coke oven door is provided with a small door; the small furnace door comprises a small furnace door body, a small furnace door cover, a small furnace door lining, a small furnace door knife edge and a small furnace door web plate; the inner surface and/or the outer surface of the small furnace door body, the inner surface and/or the outer surface of the small furnace door lining and the inner surface and/or the outer surface of the small furnace door web are respectively coated with a heat insulation material coating.
The thickness of the heat insulation material coating is 0.5-10 mm.
Before the heat-insulating material coating is coated, a layer of pretreatment liquid is coated on the corresponding substrate.
Compared with the prior art, the invention has the beneficial effects that:
1) the heat-insulating material coating is coated on the surfaces of the furnace door lining bricks, the furnace door sliding plate and the furnace door web plate in the furnace door iron piece, so that the heat dissipation capacity of the furnace end of the carbonization chamber is effectively reduced, the temperature of the carbonization chamber of the furnace end is increased, the maturity of furnace end coke is facilitated, the coking time is shortened, and the phenomena of smoke and fire during coke pushing are prevented;
2) the heat-insulating material coating is coated on the surface of the furnace door frame which is in direct contact with the raw gas of the carbonization chamber, so that the heat dissipation capacity of the high-temperature raw gas of the furnace end is effectively reduced, tar is prevented from being deposited on furnace protecting iron pieces such as the furnace door frame and the like, and the surface temperature of the furnace protecting iron pieces such as the furnace door frame and the like is reduced;
3) the surfaces of a small furnace door body, a small furnace door lining and a small furnace door web plate of a side furnace door of a top-mounted coke oven machine are coated with heat-insulating and heat-preserving material coatings, so that the heat dissipation capacity of the top space of a carbonization chamber is effectively reduced, and the energy conservation and consumption reduction are further realized;
4) the invention is suitable for the newly built coke oven and the reconstruction of the old coke oven; the method is suitable for a top-loading coke oven and a tamping coke oven; the device is suitable for the machine side furnace door and the coke side furnace door; can realize the purposes of saving energy, reducing consumption and increasing the energy utilization rate.
Drawings
FIG. 1 is a schematic structural view of a side oven door of a top-loading coke oven machine according to the present invention.
Fig. 2 is a view a-a in fig. 1.
Fig. 3 is a view B-B in fig. 1.
Fig. 4 is an enlarged view of a portion C in fig. 1.
In the figure: 1. furnace door iron piece 2, furnace door lining brick 11, furnace door body 12, furnace door web 13, furnace door knife edge 14, furnace door sliding plate 15, furnace door fastener 3, small furnace door 31, small furnace door body 32, small furnace door web 33, small furnace door knife edge 34, small furnace door cover 35, small furnace door lining 4, furnace door frame 5, protective plate 6, heat insulation material coating
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, the energy-saving coke oven door structure of the invention comprises a coke oven door consisting of a door lining brick 2 and a door iron member 1, wherein the door iron member 1 comprises a door body 11, a door fastener 15, a door sliding plate 14, a door knife edge 13 and a door web 12, one end of the door knife edge 13 close to the coke oven body is contacted with an oven door frame 4 around the door, and the inner side of the door knife edge 13 is contacted with a door web 12; the surfaces of the furnace door lining bricks 2, the furnace door frame 4, the furnace door web plates 12 and the furnace door sliding plates 14 are coated with heat insulation material coatings 6.
The inner surface of the furnace door lining brick 2 contacting with coke and/or the outer surface contacting with the furnace door iron piece 1 are coated with a heat insulation material coating 6.
The inner and/or outer surfaces of the oven door slide 14, the inner and/or outer surfaces of the oven door web 12 are coated with a coating of insulating material 6, respectively.
The coke oven door is provided with an oven protecting iron piece, and the oven protecting iron piece comprises an oven door frame 4 and a protection plate 5; the inner surface of the furnace door frame 4, which is in contact with the raw gas of the carbonization chamber, is coated with a heat insulation material coating 6.
As shown in figures 1 and 4, the coke oven door is a top-mounted coke oven machine side door, and a small oven door 3 is arranged at the top of the coke oven door; the small furnace door 3 comprises a small furnace door body 31, a small furnace door cover 34, a small furnace door lining 35, a small furnace door knife edge 33 and a small furnace door web 32; the inner surface and/or the outer surface of the small furnace door body 31, the inner surface and/or the outer surface of the small furnace door lining 35 and the inner surface and/or the outer surface of the small furnace door web 32 are respectively coated with the heat insulation material coating 6.
The thickness of the heat insulation material coating 6 is 0.5-10 mm.
Before the heat-insulating material coating 6 is coated, a layer of pretreatment liquid is coated on a corresponding substrate.
The invention relates to an energy-saving coke oven door structure, which consists of a door lining brick 2, a door iron piece 1 and a heat insulation material coating 6.
The furnace door iron piece 1 comprises a furnace door body 11, furnace door fasteners 15, a furnace door sliding plate 14, a furnace door knife edge 13, a furnace door web plate 12 and the like. The furnace door lining brick 2 is fixed with a furnace door web 12 and a furnace door sliding plate 14 through a furnace door fastener 15, plays a role in heat insulation between coke and the furnace door iron member 1, prevents heat in a carbonization chamber from dissipating, and plays a role in protecting the furnace door iron member 1. The furnace door knife edge 13 around the furnace door web 12 tightly presses the furnace door frame 4 around the furnace door, thereby playing a role of sealing and preventing raw coke oven gas in the carbonization chamber from overflowing in the production process.
The inner surface of the furnace door lining brick 2 contacted with coke and/or the outer surface of the furnace door lining brick 2 contacted with the furnace door iron piece 1 are coated with a heat insulation material coating 6, so that the thickness of the furnace door lining brick 2 can be reduced while the heat insulation effect of the furnace door is ensured, and the investment of refractory materials and the production operation cost are reduced.
The inner surface and/or the outer surface of the furnace door sliding plate 14 and the inner surface and/or the outer surface of the furnace door web plate 12 can be coated with one or more layers of heat insulation material coatings 6, namely, the heat insulation material coatings 6 can be coated in the area of the furnace door enclosed by the surrounding furnace door knife edges 13, so that the heat dissipated from the carbonization chamber through the furnace door iron piece 1 is reduced to the maximum extent.
The surface of the furnace door frame 4 in the furnace protecting iron piece, which is contacted with the raw coke oven gas of the carbonization chamber, can also be coated with a heat-insulating material coating 6 so as to reduce the heat dissipated by the carbonization chamber through the furnace protecting iron piece; and the contact surface of the furnace door knife edge 13 and the furnace door frame 4 is not coated with a heat insulation material coating so as to ensure the sealing performance.
The top of the side door of the top-mounted coke oven machine is also provided with a small oven door 3 for carrying out coal leveling operation. The small furnace door 3 is composed of a small furnace door body 31, a small furnace door cover 34, a small furnace door lining 35, a small furnace door knife edge 33 and a small furnace door web 32, the small furnace door web 32 is fixed between the small furnace door lining 35 and the small furnace door cover 34, and the small furnace door knife edges 33 around the small furnace door web 32 are tightly pressed on the small furnace door body 31 to play a role in sealing and prevent raw coke oven gas from overflowing. One or more layers of heat-insulating material coatings 6 are respectively coated on the inner surface and the outer surface of the small furnace door body 31, the inner surface and the outer surface of the small furnace door lining 35 and the inner surface and the outer surface of the small furnace door web 32 so as to reduce the heat dissipated by the carbonization chamber through the small furnace door; and the contact surface of the small furnace door knife edge 33 and the small furnace door body 31 is not coated with a heat insulation material coating so as to ensure the sealing performance.
In the invention, the coating thickness of the heat insulation material coating 6 is 0.5-10 mm, and the specific coating thickness of each part is determined according to the position and the heat insulation performance of the heat insulation material. The heat insulation material coating 6 can be coated with one layer or a plurality of layers at one part or a plurality of parts of the furnace door lining brick, the furnace door iron piece and the small furnace door according to the actual heat dissipation condition.
Before the heat-insulating material coating 6 is coated, a layer of pretreatment liquid can be coated on the substrate to improve the adhesion capability of the heat-insulating material coating 6.
The heat insulation material used for the heat insulation material coating 6 of the present invention may be a commercially available nano heat insulation coating, or a nano coating with heat insulation performance described in the publication (for example, "a high temperature resistant heat insulation coating" disclosed in chinese patent application with publication number CN 106497306a, "a nano high temperature resistant heat insulation coating" disclosed in chinese patent with publication number CN 104231917B), and the requirements for the performance are that the coating can be used at high temperature for a long time, has strong adhesion, is resistant to the invasion and corrosion of chemicals such as tar, and has good heat insulation and heat preservation effects.
Compared with the conventional coke oven door structure, the heat dissipation capacity of the carbonization chamber furnace end of the energy-saving coke oven door structure can be reduced by more than 60%, the temperature of the carbonization chamber furnace end is effectively improved, the maturity of furnace end coke is facilitated, the coking time is shortened, the smoke and fire phenomena of the oven door during coke pushing are reduced, and the energy is saved and the consumption is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An energy-saving coke oven door structure comprises a coke oven door consisting of a door lining brick and a door iron piece, wherein the door iron piece comprises a door body, a door fastener, a door sliding plate, a door knife edge and a door web plate; the furnace door is characterized in that the surfaces of the furnace door lining bricks, the furnace door frame, the furnace door web plate and the furnace door sliding plate are coated with heat insulation material coatings.
2. The oven door structure of claim 1, wherein the oven door lining bricks are coated with a thermal insulating material coating on the inner surface contacting coke and/or the outer surface contacting the oven door iron.
3. The oven door structure of claim 1, wherein the inner and/or outer surfaces of the oven door slide and the inner and/or outer surfaces of the oven door web are coated with a thermal insulation coating.
4. The oven door structure of the energy-saving coke oven according to claim 1, wherein the oven door is provided with an oven protection iron piece, and the oven protection iron piece comprises an oven door frame and a protection plate; the inner surface of the furnace door frame, which is in contact with the raw gas of the carbonization chamber, is coated with a heat insulation material coating.
5. The oven door structure of the energy-saving coke oven according to claim 1, wherein the oven door is a machine side door of a top-mounted coke oven, and a small oven door is arranged on the top of the oven door; the small furnace door comprises a small furnace door body, a small furnace door cover, a small furnace door lining, a small furnace door knife edge and a small furnace door web plate; the inner surface and/or the outer surface of the small furnace door body, the inner surface and/or the outer surface of the small furnace door lining and the inner surface and/or the outer surface of the small furnace door web are respectively coated with a heat insulation material coating.
6. The coke oven door structure according to any one of claims 1 to 5, wherein the thickness of the thermal insulation material coating is 0.5 to 10 mm.
7. The coke oven door structure according to claim 6, wherein a pretreatment liquid is applied to the corresponding substrate before the thermal insulation coating is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110157924.2A CN112812786A (en) | 2021-02-05 | 2021-02-05 | Energy-saving coke oven door structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110157924.2A CN112812786A (en) | 2021-02-05 | 2021-02-05 | Energy-saving coke oven door structure |
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| Publication Number | Publication Date |
|---|---|
| CN112812786A true CN112812786A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110157924.2A Pending CN112812786A (en) | 2021-02-05 | 2021-02-05 | Energy-saving coke oven door structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205011695U (en) * | 2015-09-28 | 2016-02-03 | 宝钢工程技术集团有限公司 | A furnace gate that is used for coke oven machine side to incline with burnt |
| CN109897649A (en) * | 2019-04-03 | 2019-06-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber burner insulation construction |
| CN215250601U (en) * | 2021-02-05 | 2021-12-21 | 中冶焦耐(大连)工程技术有限公司 | Energy-saving coke oven door structure |
-
2021
- 2021-02-05 CN CN202110157924.2A patent/CN112812786A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205011695U (en) * | 2015-09-28 | 2016-02-03 | 宝钢工程技术集团有限公司 | A furnace gate that is used for coke oven machine side to incline with burnt |
| CN109897649A (en) * | 2019-04-03 | 2019-06-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber burner insulation construction |
| CN215250601U (en) * | 2021-02-05 | 2021-12-21 | 中冶焦耐(大连)工程技术有限公司 | Energy-saving coke oven door structure |
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