CN220103132U - Pre-burning fire grate device suitable for solid waste disposal of cement kiln - Google Patents
Pre-burning fire grate device suitable for solid waste disposal of cement kiln Download PDFInfo
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- CN220103132U CN220103132U CN202320594644.2U CN202320594644U CN220103132U CN 220103132 U CN220103132 U CN 220103132U CN 202320594644 U CN202320594644 U CN 202320594644U CN 220103132 U CN220103132 U CN 220103132U
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- Prior art keywords
- grate
- cement kiln
- incineration
- solid waste
- waste disposal
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- 239000004568 cement Substances 0.000 title claims abstract description 39
- 239000002910 solid waste Substances 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 239000000779 smoke Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- 239000000378 calcium silicate Substances 0.000 claims description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 239000002699 waste material Substances 0.000 description 14
- 239000011449 brick Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011278 co-treatment Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model provides a precombustion fire grate device for solid waste disposal, which is suitable for a cement kiln, and is arranged at one side of a decomposing furnace of the cement kiln, and comprises a feeding unit and an incineration unit, wherein the feeding unit comprises a vertically arranged material chute and a horizontally arranged feeding fire grate; a plurality of incinerator ash hoppers are arranged along the lower side of the incineration grate in a sectionalized way, an outlet of each incinerator ash hopper is connected with an ash conveying device, and a discharge port end of the feeding grate is connected with a feed port end of the incineration grate.
Description
Technical Field
The utility model belongs to the technical field of waste recycling, and particularly relates to a precombustion grate device for solid waste disposal, which is suitable for a cement kiln.
Background
The technology for cooperatively disposing the solid waste by the cement kiln is a treatment technology which organically combines the solid waste incineration and the cement production, and opens up a new way for the development of recycling economy and the construction of a novel green cement industry in the cement industry.
However, in the prior art, during the co-treatment process of the cement kiln, due to the fact that the burning time of waste in the kiln is too short, the crushing and scattering effects are poor, and the like, phenomena of incomplete burning of the occasional waste, the formation of core materials by the incompletely burned waste and materials, and the like occur, and the influence on the quality of clinker is large; and unburned waste has a great influence on the flow field of the decomposing furnace and also influences the normal production of the cement kiln. On the premise of meeting the reasonable treatment amount of solid waste, the combustion time of the waste at high temperature is prolonged in a certain way, so that the influence of the solid waste synergistic process on the quality of clinker and the stability of kiln lines can be reduced.
Disclosure of Invention
Aiming at the problems and the defects existing in the prior art, the utility model provides the precombustion grate device for solid waste disposal, which is suitable for a cement kiln, and can prolong the combustion time of wastes in the precombustion device, reduce the fact that the blocks which are not completely combusted directly enter a decomposing furnace, and influence the normal production of the cement kiln.
The utility model is realized by the following technical scheme:
the pre-burning fire grate device for solid waste disposal suitable for the cement kiln is arranged on one side of a decomposing furnace of the cement kiln and comprises a feeding unit and an incineration unit, wherein the feeding unit comprises a vertically arranged material chute and a horizontally arranged feeding fire grate, the outside of the incineration unit is surrounded by an incinerator wall, the inside of the incinerator wall is provided with an obliquely arranged incineration fire grate, the end outlet part of the incineration fire grate is provided with a discharging hopper, and the discharging hopper is connected with a tail smoke chamber of the cement kiln; a plurality of incinerator ash hoppers are arranged along the lower side of the incineration grate in a sectionalized way, an outlet of each incinerator ash hopper is connected with an ash conveying device, and a discharge port end of the feeding grate is connected with a feed port end of the incineration grate.
Further, the incinerator wall comprises a first furnace wall arranged at the upper part and a second furnace wall arranged at the lower part, wherein the first furnace wall is composed of mullite corundum castable, light castable and calcium silicate plates from inside to outside respectively, and the second furnace wall is composed of SiC-80 bricks, air interlayers, light insulating bricks and calcium silicate plates from inside to outside respectively.
Further, a hot air port is arranged at the top of the incinerator wall, a smoke outlet is arranged at the lower part of the incinerator wall, the smoke outlet is connected with a decomposing furnace of the cement kiln, and a hot raw material port is arranged on the side face of the incinerator wall.
Further, the incineration grate comprises a motion executing mechanism and a grate segment arranged at the upper part of the motion executing mechanism.
Further, the included angle between the incineration grate and the horizontal plane is 15-35 degrees.
Furthermore, the smoke outlet and the discharging hopper are flexibly connected with the cement kiln in a connecting mode.
Further, the feeding unit further comprises a pushing device connected with one end of the feeding grate.
Further, the combustion control unit is connected with the pushing device and the incineration grate respectively.
The utility model has the beneficial effects that:
(1) After the pre-burning fire grate device is installed, the furnace capacity of the cement kiln decomposing furnace is obviously increased, the residence time of waste on the burning fire grate is obviously increased, unburnt massive combustible materials cannot directly enter the decomposing furnace, and the influence on the quality of cement clinker and the stability of kiln lines is small.
(2) The pre-combustion fire grate device is provided with a double combustion control unit, so that the combustion temperature in the furnace is effectively controlled, and the service life of equipment is prolonged. When the temperature in the furnace exceeds the design temperature, the input amount of combustible materials can be reduced through the hydraulic device, and the surface of waste on the incinerator grate of the raw materials can be heated through the hot raw material port, so that the temperature in the furnace is reduced by utilizing the decomposition endothermic reaction of the hot raw materials.
Drawings
FIG. 1 is a schematic diagram of a precombustion grate device for solid waste disposal suitable for a cement kiln;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
in the figure: 1-a material chute; 2-a feeding grate; 3-pushing device; 4-a percolation tank; 5-supporting a steel frame; 6-a hot air port; 7-a hot raw meal port; 8-an incineration grate; 9-an incinerator ash bucket; 10-ash conveying device; 11-blanking hopper; 12-a smoke outlet; 13-incinerator walls; 14-a hydraulic device; 15-a motion actuator; 16-fire grate segments; 17-a first furnace wall; 18-a second furnace wall.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 2, the pre-combustion grate device for solid waste disposal is suitable for a cement kiln, is arranged on one side of a decomposing furnace of the cement kiln, and comprises a feeding unit, an incineration unit and a combustion control unit.
The feeding unit is connected with the solid waste inlet of the incineration unit and is used for feeding the solid waste to the incineration grate 8 of the incineration unit for pre-combustion. The feeding unit comprises a material chute 1, a feeding grate 2, a pushing device 3 and a filtrate bucket 4, wherein the material chute 1 is vertically arranged, the feeding grate 2 is horizontally arranged at the lower side of the material chute, one end of the feeding grate 2 is connected with the pushing device 3 which is horizontally arranged, the discharge port end of the other end is connected with the inlet of the incineration grate 8 of the incineration unit, and the filtrate bucket 4 is arranged at the lower side of the feeding grate 2 and used for collecting filtrate to be treated.
The incinerator unit is used as main combustion equipment of a pre-combustion grate device, the outside of the incinerator unit is surrounded by an incinerator wall 13, a hot air port 6 is formed in the top of the incinerator wall 13, a smoke air outlet 12 is formed in the lower portion of the incinerator wall 13, the smoke air outlet 12 is connected with a decomposing furnace of a cement kiln, a hot raw material port 7 is formed in the side face of the incinerator wall 13, an obliquely arranged incinerator grate 8 is arranged in the incinerator wall 13, a lower hopper 11 is arranged at an end outlet portion of the incinerator grate 8, and the lower hopper 11 is connected with a kiln tail smoke chamber of the cement kiln; a plurality of incinerator ash hoppers 9 are arranged along the lower side of the incineration grate 8 in a sectioning way, and the outlet of each incinerator ash hopper 9 is connected with an ash conveying device 10.
The incinerator wall 13 comprises a first furnace wall 17 arranged at the upper part and a second furnace wall 18 arranged at the lower part, wherein the first furnace wall 17 is composed of mullite corundum castable, light castable and calcium silicate plates from inside to outside respectively, and the second furnace wall 18 is composed of SiC-80 bricks, air interlayers, light insulating bricks and calcium silicate plates from inside to outside respectively.
The incineration grate 8 comprises a motion executing mechanism 15 and a grate segment 16 arranged at the upper part of the motion executing mechanism 15, wherein the motion executing mechanism 15 is of a rocker structure and is driven by a hydraulic device 14.
The incineration grate 8 is obliquely arranged, and the degree of an included angle between the incineration grate 8 and the horizontal plane is 15-35 degrees, and 24 degrees are optimal.
The smoke outlet 12 and the discharging hopper 11 are flexibly connected with the cement kiln in a connecting mode, so that thermal stress generated by thermal expansion can be avoided.
The hot raw material port 7 is provided with a valve and is arranged in linkage with the temperature in the pre-burning grate device, when the temperature in the furnace exceeds the set temperature, the valve is opened, the hot raw material is scattered on the upper surface of the incineration grate 8, and the temperature in the furnace is reduced by utilizing the decomposition endothermic reaction of the hot raw material.
The combustion control unit is a control system of the whole system and comprises a hydraulic device 14, wherein the hydraulic device 14 is respectively connected with the pushing device 3 and the incineration grate 8.
The hydraulic device 14 is interlocked with the temperature in the precombustion grate, the operating frequency of the pushing device 3 and the incineration grate 8 is adjusted according to the temperature in the furnace, and the combustion residence time of the waste in the precombustion grate is controlled.
The working procedure of this embodiment is as follows:
(1) The waste in the factory is conveyed by a belt and falls into the upper surface of the feeding grate 2 through the material chute 1, and the filtered liquid is collected by the filtrate bucket 4 and is treated. The hydraulic device 14 controls the reciprocating motion of the pushing device 3, and the waste is pushed to the surface of the fire grate segment 16 of the incineration fire grate 8 by the pushing device 3.
(2) Tertiary air at the temperature of about 850 ℃ is introduced through the hot air port 6, the waste is quickly dried on the surface of the incineration grate 8 and is ignited and burned, the incineration grate 8 is pushed by the hydraulic device 14 to move the movement executing mechanism 15 forwards, and the incinerated ash slag and ash leakage of the incineration grate 8 are collected and then enter a cement kiln smoke chamber from the discharging hopper 11; the flue gas generated by incineration enters the decomposing furnace from the flue gas outlet 12, so that the flue gas treatment is realized, and part of fuel is replaced.
(3) The temperature measuring points are arranged in the pre-burning fire grate device, when the actual temperature in the furnace exceeds the design temperature, the hydraulic device 14 can be used for reducing the input amount of combustible materials, and meanwhile, the hot raw material port 7 is used for throwing and heating the surface of waste on the fire grate piece 16 of the incineration fire grate 8, and the temperature in the furnace is reduced by utilizing the decomposition endothermic reaction of the hot raw material.
Finally, it should be noted that: although the present utility model has been described in detail with reference to the embodiments, it should be understood that the utility model is not limited to the preferred embodiments, but is capable of modification and equivalents to some of the features described in the foregoing embodiments, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The pre-combustion fire grate device for solid waste disposal suitable for the cement kiln is arranged on one side of a decomposing furnace of the cement kiln and is characterized by comprising a feeding unit and an incineration unit, wherein the feeding unit comprises a vertically arranged material chute (1) and a horizontally arranged feeding fire grate (2), the outside of the incineration unit is surrounded by an incinerator wall (13), an obliquely arranged incineration fire grate (8) is arranged in the incinerator wall (13), a discharging hopper (11) is arranged at the end outlet part of the incineration fire grate (8), and the discharging hopper (11) is connected with a kiln tail smoke chamber of the cement kiln; a plurality of incinerator ash hoppers (9) are arranged along the lower side of the incineration grate (8) in a segmented mode, an outlet of each incinerator ash hopper (9) is connected with an ash conveying device (10), and a discharge port end of the feeding grate (2) is connected with a feed port end of the incineration grate (8).
2. The pre-combustion grate device for solid waste disposal, which is applicable to a cement kiln, according to claim 1, characterized in that the incinerator wall (13) comprises a first furnace wall (17) arranged at the upper part and a second furnace wall (18) arranged at the lower part, and the first furnace wall (17) is respectively composed of mullite corundum castable, light castable and calcium silicate boards from inside to outside.
3. The pre-combustion grate device for solid waste disposal suitable for a cement kiln according to claim 2, wherein the top of the incinerator wall (13) is provided with a hot air port (6), the lower part of the incinerator wall (13) is provided with a smoke outlet (12), the smoke outlet (12) is connected with a decomposing furnace of the cement kiln, and the side surface of the incinerator wall (13) is provided with a hot raw material port (7).
4. The pre-combustion grate device for solid waste disposal, which is suitable for a cement kiln according to claim 1, characterized in that the incineration grate (8) comprises a motion actuator (15) and a grate segment (16) arranged at the upper part of the motion actuator (15).
5. The pre-combustion grate device for solid waste disposal suitable for a cement kiln according to claim 1, characterized in that the included angle of the incineration grate (8) with the horizontal plane is 15-35 degrees.
6. A pre-combustion grate device for solid waste disposal suitable for a cement kiln according to claim 3, wherein the flue gas outlet (12) and the discharging hopper (11) are flexibly connected with the cement kiln.
7. The pre-combustion grate device for solid waste disposal, which is applicable to a cement kiln according to claim 1, is characterized in that the feeding unit further comprises a pushing device (3) connected with one end of the feeding grate (2).
8. The pre-combustion grate device for solid waste disposal, which is applicable to a cement kiln according to claim 7, is characterized by further comprising a combustion control unit, wherein the combustion control unit is respectively connected with the pushing device (3) and the incineration grate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594644.2U CN220103132U (en) | 2023-03-23 | 2023-03-23 | Pre-burning fire grate device suitable for solid waste disposal of cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594644.2U CN220103132U (en) | 2023-03-23 | 2023-03-23 | Pre-burning fire grate device suitable for solid waste disposal of cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220103132U true CN220103132U (en) | 2023-11-28 |
Family
ID=88873643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320594644.2U Active CN220103132U (en) | 2023-03-23 | 2023-03-23 | Pre-burning fire grate device suitable for solid waste disposal of cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220103132U (en) |
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2023
- 2023-03-23 CN CN202320594644.2U patent/CN220103132U/en active Active
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