CN210128627U - Refractory material kiln exhaust passage - Google Patents
Refractory material kiln exhaust passage Download PDFInfo
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- CN210128627U CN210128627U CN201920648838.XU CN201920648838U CN210128627U CN 210128627 U CN210128627 U CN 210128627U CN 201920648838 U CN201920648838 U CN 201920648838U CN 210128627 U CN210128627 U CN 210128627U
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Abstract
The utility model discloses a refractory material kiln exhaust passage, which comprises a kiln and a kiln exhaust pipe; a pre-treatment channel is arranged between the kiln and the kiln exhaust pipe; the pre-processing channel comprises a slag discharge tunnel; a slag discharging piece is arranged on the inner side of the slag discharging tunnel; the top surface of the slag discharge tunnel is provided with a flange through hole; the flange through hole is provided with an isolation seat with a flange structure at two ends through bolts; the other end of the isolation seat is provided with a pretreatment pipe through a bolt; the pretreatment pipe is connected to the secondary exhaust pipe through an elbow; the secondary exhaust pipe is connected to a kiln exhaust pipe; the pretreatment pipe comprises an inner pipe and an outer pipe; the top and the bottom of the inner pipe and the outer pipe are integrally sealed; the utility model discloses a refractory material kiln exhaust passage can carry out waste heat recovery in advance at the exhaust passage entrance to carry out the flue gas dust removal simultaneously at waste heat recovery, improve back level treatment effeciency, it is energy-concerving and environment-protective more.
Description
Technical Field
The utility model relates to an exhaust passage, concretely relates to refractory material kiln exhaust passage belongs to refractory material processing equipment technical field.
Background
The production of refractory materials requires a high-temperature kiln, in order to increase the temperature of the inner cavity of the kiln, a large amount of combustion fuel such as coal blocks and the like is required, so that a large amount of high-temperature gas can be discharged, meanwhile, the high-temperature gas in the cavity also needs to be released before the high-temperature kiln for producing refractory materials is opened, the general gas is discharged through an exhaust passage, and a large amount of heat energy is wasted in the process; in the prior art, waste heat is usually recovered, for example, as in chinese patent application No.: 201520018388.8, respectively; the exhaust channel is communicated with an inner cavity of a high-temperature kiln and comprises a plurality of waste heat recovery pipes, the waste heat recovery pipes penetrate through the side wall of the exhaust channel, the part, located in the exhaust channel, of each waste heat recovery pipe is a waste heat recovery part, the non-obtuse included angle between the axial direction of each waste heat recovery part and the axial direction of the exhaust channel is greater than or equal to 80 degrees, the axial directions of the waste heat recovery parts are mutually parallel, the distance between every two adjacent waste heat recovery parts is 5-10 times of the outer diameter of each waste heat recovery part, the waste heat recovery pipes are hermetically connected with the side wall of the exhaust channel, and fluid refrigerants are arranged in the waste heat recovery pipes; the method can further recover the waste heat generated in the production of refractory materials, and can be used as the raw materials of the following Chinese patent application numbers: 201820009890.6, discloses an exhaust channel of a refractory kiln, comprising an inner heat recovery exhaust pipe; the inner recovery heat exhaust pipe comprises a first exhaust section communicated with the inner bin of the kiln; and a circular arc corner section integrally formed at the output end of the first exhaust section; and a merging section integrally formed at the output end of the arc corner section; and a straight pipe section with the lower end communicated with the output end of the merging section and vertically fixed with the ground; preheating recovery pipes are spirally arranged outside the first exhaust section, the arc corner section and the merging section and outside the lower end of the straight pipe section; an annular bin is arranged on the inner side of the straight pipe section above the output end of the merging section; the inner surface of the annular bin does not protrude out of the inner surface of the straight pipe section; a plurality of rows of small interference blades communicated with the annular bin are annularly arranged on the inner surface of the annular bin; a plurality of inner flow passages are integrally formed at the bottom of the annular bin; the exhaust passage of the refractory material kiln of the utility model can improve the heat recovery effect and reduce the dust emission; however, the two schemes can not realize the pre-recovery of the high temperature at the section close to the kiln, and the dust and heat are easy to escape in the dust discharging process; in addition, dust cannot be quickly discharged.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a refractory material kiln exhaust passage can carry out waste heat recovery in advance in the exhaust passage entrance to carry out the flue gas dust removal simultaneously at waste heat recovery, improve back level treatment effeciency, it is energy-concerving and environment-protective more.
The refractory material kiln exhaust passage comprises a kiln and a kiln exhaust pipe; a pre-treatment channel is arranged between the kiln and the kiln exhaust pipe, and the flue gas of the kiln is treated by the pre-treatment channel, enters an exhaust chimney for secondary treatment and is exhausted to the outside; the pre-treatment channel comprises a slag discharge tunnel, and a slag discharge piece is arranged on the inner side of the slag discharge tunnel; the top surface of the slag discharge tunnel is provided with a flange through hole; the flange through hole is provided with an isolation seat with a flange structure at two ends through bolts; the other end of the isolation seat is provided with a pretreatment pipe through a bolt; the pretreatment pipe pretreats the flue gas and guides dust in the flue gas into the slag discharge channel through the isolation seat; after the slag discharging channel collects dust, the collected dust is discharged to the outside of the slag discharging tunnel through the slag discharging piece; the dust content in the exhaust is greatly reduced, the dust is lighter, and the treatment efficiency of the exhaust chimney is improved; the pretreatment pipe is connected to the secondary exhaust pipe through an elbow; the secondary exhaust pipe is connected to a kiln exhaust pipe; the pretreatment pipe comprises an inner pipe and an outer pipe; the top and the bottom of the inner pipe and the outer pipe are integrally sealed; the top and the bottom of the inner pipe and the outer pipe are of flange structures; the bottom parts of the inner pipe and the outer pipe are provided with flange air inlets; the flange air inlet is connected to the exhaust end of the kiln inner bin through an induced draft fan; a plurality of groups of mutually staggered wind disturbing plates are welded on the inner side of the inner pipe; a flange ring is welded on the inner side of the inner pipe and at the top of the wind disturbing plate; the top surface of the flange ring is provided with a filter screen plate through bolts; a high-temperature heat exchanger is arranged between the inner pipe and the outer pipe; the inner tube is internally provided with the air baffle and the filter screen plate, so that the exhaust flow velocity can be reduced, the dust is filtered, the inner tube is fully contacted with the inner wall of the inner tube, the contact time is prolonged, namely, the contact time with a high-temperature heat exchanger is prolonged, and the heat recovery efficiency is improved.
As a preferred embodiment, the high temperature heat exchanger includes upper and lower flanges provided at upper and lower portions of the outer pipe; the upper flange and the lower flange are respectively communicated with the interlayer between the inner pipe and the outer pipe, cold liquid is guided into the interlayer through the lower flange, and liquid for completing heat exchange is guided out from the upper flange.
As a preferred embodiment, the high temperature heat exchanger includes upper and lower flanges provided at upper and lower portions of the outer pipe; a heat exchange spiral coil is arranged between the inner pipe and the outer pipe; the upper flange and the lower flange are respectively communicated with two ends of the heat exchange spiral coil, cold liquid is guided into the heat exchange spiral coil through the lower flange, and liquid for completing heat exchange is guided out from the upper flange.
As a preferred embodiment, the isolation seats are flanges arranged at two ends of the pipe body and lower grid plates arranged at the inner side of the pipe body; one end of the slag discharge tunnel is sealed, and the other end of the slag discharge tunnel is provided with a locking door which can be pulled up and down; the slag discharging piece is a material receiving conveying belt; connect material conveyer belt output to set up in the locking door inboard, the dust is leading-in to connect the material conveyer belt with the dust through lower grid board, connects the material conveyer belt to deliver to the locking door side with the dust, regularly opens the door and carries out the dust clearance, because the inside flue gas of inner tube is that the draught fan is squeezed into, so connect the dust on the material conveyer belt to rise again.
As a preferred embodiment, the isolation seat is an electro-hydraulic inserting plate type double-layer ash discharge valve; arrange the sediment piece and be scraper conveyor, the double-deck unloading valve of electricity liquid dynamic picture peg formula can keep apart exhaust duct and outside air, in operation, the one deck is only opened to the double-deck unloading valve of electricity liquid dynamic picture peg formula, when the ash is unloaded as required, close the unloading valve last time, open lower floor's unloading valve, the dust enters into fast and arranges the sediment tunnel in, close lower floor's unloading valve after that, open upper unloading valve, it carries out normal deposition work, it can guarantee that flue gas and heat do not run outward, scraper conveyor regularly scrapes out the dust.
As a preferred embodiment, the kiln exhaust pipe is an exhaust chimney, and a filter screen and a heat recovery heat exchanger are mounted on the exhaust chimney, and are used for recovering heat of exhaust and filtering dust, which belongs to the prior art, and the detailed structure and operation process thereof are not described in detail herein.
As a preferred embodiment, the pre-treatment channel is provided with at least two groups; the kiln exhaust pipe is provided with two air inlet flanges; the two secondary exhaust pipes are respectively connected to the two air inlet flanges; an exhaust hood is arranged at the exhaust end of the kiln inner bin; two air outlet flanges are arranged on the exhaust cover; the two flange air inlets are respectively connected to the two air outlet flanges through air guiding pipes; the secondary exhaust pipe and the induced draft pipe are respectively provided with a closing valve, the preposed processing channels are provided with two groups, the pre-processing channels are arranged between the kiln and the exhaust chimney in a main-standby mode, when one of the two groups carries out self-cleaning, the other group can take over the work, when switching is carried out, the two groups of the preposed processing channel closing valves are opened firstly, then the closing valves needing to be cleaned are closed, the built-up layer in the inner pipe can be removed through regular cleaning, and the heat absorption and heat exchange can be fully carried out.
Compared with the prior art, the utility model discloses a refractory material kiln exhaust passage, the shutoff valve is all installed at the preposition processing passageway both ends, installs between kiln and exhaust chimney as a main one and backup mode, can regularly carry out the inside clearance, and when a set of clearance, another set carries out work; the during operation, adopt heat in advance at the exhaust passage entrance, accomplish high-value high temperature heat and fully retrieve in advance, adopt air disturbance plate and filter screen board to reduce exhaust flow velocity, make it fully contact with inner tube inner wall, the extension contact time, when filtering the dust, heat recovery efficiency has been improved, then, accomplish the flue gas that once removes dust and high heat is collected and enter into the kiln blast pipe and carry out secondary conventional dust removal and secondary heat recovery, its heat utilization is rateed highly, and dust filter effect is better, the direct ejection of compact of sediment spare is arranged in the dust adoption.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the overall structure of embodiment 2 of the present invention.
Fig. 3 is a schematic view of the overall structure of embodiment 3 of the present invention.
Detailed Description
Example 1:
the refractory kiln exhaust channel shown in fig. 1 and 3 comprises a kiln 1 and a kiln exhaust pipe 2; a pre-treatment channel A is arranged between the kiln 1 and the kiln exhaust pipe 2, and the flue gas of the kiln is treated by the pre-treatment channel, enters an exhaust chimney for secondary treatment and is exhausted to the outside; the pre-treatment channel A comprises a slag discharge tunnel 3, and a slag discharge part 4 is arranged on the inner side of the slag discharge tunnel 3; the top surface of the slag discharge tunnel 3 is provided with a flange through hole 5; the flange through hole 5 is provided with an isolation seat 6 with a flange structure at two ends through bolts; the other end of the isolation seat 6 is provided with a pretreatment pipe 7 through a bolt; the pretreatment pipe 7 pretreats the flue gas and guides dust in the flue gas into a slag discharge channel through an isolation seat; after the slag discharging channel collects dust, the collected dust is discharged to the outside of the slag discharging tunnel through the slag discharging piece; the dust content in the exhaust is greatly reduced, the dust is lighter, and the treatment efficiency of the exhaust chimney is improved; the pre-treatment pipe 7 is connected to a secondary exhaust pipe 9 through an elbow 8; the secondary exhaust pipe 9 is connected to the kiln exhaust pipe 2; the pretreatment pipe 7 includes an inner pipe 71 and an outer pipe 72; the top and the bottom of the inner pipe 71 and the outer pipe 72 are integrally sealed; the top and the bottom of the inner pipe 71 and the outer pipe 72 are of flange structures; the bottom parts of the inner pipe 71 and the outer pipe 72 are provided with flange air inlets 73; the flange air inlet 73 is connected to the exhaust end of the inner bin of the kiln 1 through an induced draft fan; a plurality of groups of mutually staggered wind disturbing plates 74 are welded on the inner side of the inner pipe 71; a flange ring 75 is welded on the top of the wind disturbing plate at the inner side of the inner pipe 71; the top surface of the flange ring 75 is provided with a filter screen plate 76 through bolts; a high-temperature heat exchanger 77 is arranged between the inner pipe 71 and the outer pipe 72; the inner pipe is internally provided with the air baffle and the filter screen plate, so that the exhaust flow speed can be reduced, the air baffle and the filter screen plate are fully contacted with the inner wall of the inner pipe while dust is filtered, the contact time is prolonged, namely, the contact time with a high-temperature heat exchanger is prolonged, and the heat recovery efficiency is improved; the isolation seat 6 is a flange 62 arranged at two ends of the pipe body 61 and a lower grid plate 63 arranged at the inner side of the pipe body; one end of the slag discharge tunnel 3 is sealed, and the other end is provided with an up-and-down pull type locking door 31; the slag discharging piece 4 is a material receiving conveying belt; connect the material conveyer belt output to set up in locking door 31 inboard, the dust is leading-in to connect the material conveyer belt with the dust through lower grid plate, connects the material conveyer belt to deliver to the locking door side with the dust, regularly opens the door and carries out the dust clearance, because the inside flue gas of inner tube is that the draught fan is squeezed into, so connect the dust on the material conveyer belt to rise again.
In still another embodiment, the high temperature heat exchanger 77 includes an upper flange 771 and a lower flange 772 provided at upper and lower portions of the outer tube; the upper flange 771 and the lower flange 772 are respectively communicated with the interlayer between the inner pipe 71 and the outer pipe 72, cold liquid is guided into the interlayer through the lower flange, and liquid after heat exchange is guided out from the upper flange.
In still another embodiment, the high temperature heat exchanger 77 includes an upper flange 771 and a lower flange 772 provided at upper and lower portions of the outer tube; a heat exchange spiral coil (not shown) is arranged between the inner pipe 71 and the outer pipe 72; the upper flange and the lower flange are respectively communicated with two ends of the heat exchange spiral coil, cold liquid is guided into the heat exchange spiral coil through the lower flange, and liquid for completing heat exchange is guided out from the upper flange.
Example 2:
as shown in the exhaust channel of the refractory kiln shown in fig. 2, the isolation seat 6 is an electro-hydraulic plugboard type double-layer ash discharge valve; arrange sediment piece 4 and be scraper conveyor, the double-deck unloading valve of electricity liquid dynamic picture peg formula can keep apart exhaust passage and outside air, in operation, the one deck is only opened to the double-deck unloading valve of electricity liquid dynamic picture peg formula, when unloading the ash as required, close the unloading valve of last time, open lower floor's unloading valve, the dust enters into fast and arranges the sediment tunnel in, close lower floor's unloading valve after that, open upper unloading valve, it carries out normal deposition work, it can guarantee that flue gas and heat do not run outward, scraper conveyor regularly scrapes out the dust.
The kiln exhaust pipe 2 is an exhaust chimney, a filter screen and a heat recovery heat exchanger are mounted on the exhaust chimney, the exhaust chimney is used for recovering heat of exhaust and filtering dust, the kiln exhaust pipe belongs to the prior art, and the specific structure and the working process of the kiln exhaust pipe are not detailed.
Example 3:
as shown in fig. 1 and 3, the pre-treatment channel a is provided with at least two groups; the kiln exhaust pipe 2 is provided with two air inlet flanges 21; the two secondary exhaust pipes 9 are respectively connected to two air inlet flanges 21; an exhaust hood 11 is arranged at the exhaust end of the inner bin of the kiln 1; two air outlet flanges 12 are arranged on the exhaust hood 11; the two flange air inlets 73 are respectively connected to the two air outlet flanges 12 through air guiding pipes 14; the secondary exhaust pipe 9 and the induced draft pipe 14 are respectively provided with a closing valve 13, the pre-processing channels are arranged in two groups, the pre-processing channels are arranged between the kiln and the exhaust chimney in a main-standby mode, when one of the two groups carries out self-cleaning, the other group can take over the work, when switching is carried out, the two groups of pre-processing channel closing valves are opened firstly, then the closing valves needing to be cleaned are closed, the built-up layer in the inner pipe can be removed through regular cleaning, and the heat absorption and heat exchange can be fully carried out.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (7)
1. A refractory material kiln exhaust passage comprises a kiln and a kiln exhaust pipe; the method is characterized in that: a pre-treatment channel is arranged between the kiln and the kiln exhaust pipe; the pre-processing channel comprises a slag discharge tunnel; a slag discharging piece is arranged on the inner side of the slag discharging tunnel; the top surface of the slag discharge tunnel is provided with a flange through hole; the flange through hole is provided with an isolation seat with a flange structure at two ends through bolts; the other end of the isolation seat is provided with a pretreatment pipe through a bolt; the pretreatment pipe is connected to the secondary exhaust pipe through an elbow; the secondary exhaust pipe is connected to a kiln exhaust pipe; the pretreatment pipe comprises an inner pipe and an outer pipe; the top and the bottom of the inner pipe and the outer pipe are integrally sealed; the top and the bottom of the inner pipe and the outer pipe are of flange structures; the bottom parts of the inner pipe and the outer pipe are provided with flange air inlets; the flange air inlet is connected to the exhaust end of the kiln inner bin through an induced draft fan; a plurality of groups of mutually staggered wind disturbing plates are welded on the inner side of the inner pipe; a flange ring is welded on the inner side of the inner pipe and at the top of the wind disturbing plate; the top surface of the flange ring is provided with a filter screen plate through bolts; and a high-temperature heat exchanger is arranged between the inner pipe and the outer pipe.
2. The refractory kiln exhaust passage as defined in claim 1, wherein: the high-temperature heat exchanger comprises an upper flange and a lower flange which are arranged at the upper part and the lower part of the outer pipe; the upper flange and the lower flange are respectively communicated with the interlayer between the inner pipe and the outer pipe.
3. The refractory kiln exhaust passage as defined in claim 1, wherein: the high-temperature heat exchanger comprises an upper flange and a lower flange which are arranged at the upper part and the lower part of the outer pipe; a heat exchange spiral coil is arranged between the inner pipe and the outer pipe; the upper flange and the lower flange are respectively communicated with two ends of the heat exchange spiral coil.
4. The refractory kiln exhaust passage as defined in claim 1, wherein: the isolation seats are flanges arranged at two ends of the pipe body and lower grating plates arranged at the inner side of the pipe body; one end of the slag discharge tunnel is sealed, and the other end of the slag discharge tunnel is provided with a locking door which can be pulled up and down; the slag discharging piece is a material receiving conveying belt; the output end of the material receiving conveyor belt is arranged on the inner side of the locking door.
5. The refractory kiln exhaust passage as defined in claim 1, wherein: the isolation seat is an electro-hydraulic inserting plate type double-layer ash discharge valve; the slag discharging part is a scraper conveyor.
6. The refractory kiln exhaust passage as defined in claim 1, wherein: the kiln exhaust pipe is an exhaust chimney, and a filter screen and a heat recovery heat exchanger are arranged on the exhaust chimney.
7. The refractory kiln exhaust passage as defined in claim 1, wherein: the pre-processing channels are at least provided with two groups; the kiln exhaust pipe is provided with two air inlet flanges; the two secondary exhaust pipes are respectively connected to the two air inlet flanges; an exhaust hood is arranged at the exhaust end of the kiln inner bin; two air outlet flanges are arranged on the exhaust cover; the two flange air inlets are respectively connected to the two air outlet flanges through air guiding pipes; and the secondary exhaust pipe and the induced draft pipe are respectively provided with a closing valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920648838.XU CN210128627U (en) | 2019-05-08 | 2019-05-08 | Refractory material kiln exhaust passage |
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| CN201920648838.XU CN210128627U (en) | 2019-05-08 | 2019-05-08 | Refractory material kiln exhaust passage |
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| CN210128627U true CN210128627U (en) | 2020-03-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305569A (en) * | 2022-08-26 | 2022-11-08 | 长沙新立硅材料科技有限公司 | Device for smelting polycrystalline silicon in intermediate frequency furnace and using method |
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2019
- 2019-05-08 CN CN201920648838.XU patent/CN210128627U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305569A (en) * | 2022-08-26 | 2022-11-08 | 长沙新立硅材料科技有限公司 | Device for smelting polycrystalline silicon in intermediate frequency furnace and using method |
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