CN217188651U - Borosilicate support plate glass kiln flue gas quenching and tempering device - Google Patents
Borosilicate support plate glass kiln flue gas quenching and tempering device Download PDFInfo
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- CN217188651U CN217188651U CN202220357520.8U CN202220357520U CN217188651U CN 217188651 U CN217188651 U CN 217188651U CN 202220357520 U CN202220357520 U CN 202220357520U CN 217188651 U CN217188651 U CN 217188651U
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- flue gas
- degumming
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The utility model discloses a borosilicate support plate glass kiln flue gas conditioning device belongs to borosilicate support plate glass substrate production technical field. The technical scheme is as follows: the device comprises a degumming device, wherein the degumming device is connected with an air inlet pipe and a first air outlet pipe, the first air outlet pipe is connected with a tempering tower, the upper part of the tempering tower is sequentially connected with a plurality of cyclone dust collectors through pipelines, and the last cyclone dust collector is connected with a second air outlet pipe; the device also comprises a calcium hydroxide bin, wherein a discharge port of the calcium hydroxide bin is connected with the first air outlet pipe, and a material conveying valve is arranged on the discharge port; a plurality of degumming plates are sequentially arranged in the degumming device at intervals along the flue gas transmission direction, and a plurality of holes are formed in the degumming plates. The utility model discloses make colloidal matter and dust particle greatly reduced in getting into SCR deNOx systems's the flue gas, prolonged the life of catalyst, guaranteed the stability of kiln technology and the up to standard emission of NOx in the flue gas.
Description
Technical Field
The utility model relates to a borosilicate support plate glass substrate production technical field, concretely relates to borosilicate support plate glass kiln flue gas quenching and tempering device.
Background
In the production process of the borosilicate carrier glass substrate, the boron trioxide not only plays a role in fluxing, but also is beneficial to forming the glass substrate with high chemical durability, low thermal expansion and low electrical conductivity.
The melting point of boron trioxide is 450 ℃ and the boiling point is 1860 ℃. The space temperature of the borosilicate carrier plate glass kiln is 1400 ℃, and the boron trioxide can be gasified at the temperature and discharged along with flue gas. The temperature of the kiln flue gas outlet is 400-550 ℃, and the boron trioxide is in a gaseous colloid state at the moment.
Along with the stricter and stricter environmental protection requirements, the emission requirement of NOx in the flue gas of the glass kiln is less than 100mg/m 3 Therefore, the flue gas can reach the emission standard only by denitration. The denitration method adopted at present is mainly an SCR denitration process at medium temperature of 320-420 ℃. And the colloidal boron trioxide in the flue gas can adhere to the surface of the denitration catalyst, so that the catalyst is blocked and inactivated, and the standard emission of the flue gas and the stability of the production process are not facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the flue gas conditioning device of the borosilicate support plate glass kiln is provided, the flue gas is conditioned and dedusted before entering the SCR denitration system, the content of colloidal substances such as boron trioxide and dust particles in the flue gas is greatly reduced, the service life of a catalyst in an SCR reactor is prolonged, and the standard emission of the flue gas and the stability of the production process are ensured.
The technical scheme of the utility model is that:
the flue gas conditioning device for the borosilicate support plate glass kiln comprises a degumming device, wherein the degumming device is connected with an air inlet pipe and a first air outlet pipe, the first air outlet pipe is connected with a conditioning tower, the upper part of the conditioning tower is sequentially connected with a plurality of cyclone dust collectors through pipelines, and the last cyclone dust collector is connected with a second air outlet pipe; the device also comprises a calcium hydroxide bin, wherein a discharge port of the calcium hydroxide bin is connected with the first air outlet pipe, and a material conveying valve is arranged on the discharge port; a plurality of degumming plates are sequentially arranged in the degumming device at intervals along the flue gas transmission direction, and a plurality of holes are formed in the degumming plates.
Preferably, the holes on the adjacent degumming plates are arranged in a staggered manner.
Preferably, a pressure sensor is installed on the degumming device.
Preferably, the upper part and the lower part of the tempering tower are thick sections, the middle part of the tempering tower is a thin section, and the first air outlet pipe is connected to the thick section at the lower part of the tempering tower.
Preferably, a level indicator is installed on the thick section of the lower part of the tempering tower, and a discharge valve is arranged on a discharge pipe at the bottom of the tempering tower.
Preferably, a discharge pipe at the bottom of the cyclone dust collector is connected with a spiral conveyor, and a discharge valve is mounted on the discharge pipe; a circulating material pipe of the spiral conveyor is connected with the thick section at the lower part of the hardening and tempering tower, and a material conveying valve is arranged on the circulating material pipe; a discharge valve is arranged on the discharge pipe at the bottom of the screw conveyor.
Preferably, the air inlet pipe is provided with an electric air valve, and the second air outlet pipe is provided with a temperature sensor.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses remove dust the kiln flue gas through two-stage quenching and tempering, two-stage for colloidal matter and dust particle greatly reduced in getting into SCR deNOx systems's the flue gas have prolonged the life of catalyst, have guaranteed the stability of kiln technology and the up to standard emission of NOx in the flue gas.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of a degumming plate.
FIG. 3 is a schematic view of the flow of flue gas between adjacent degummed plates.
In the figure, 1-a degumming device, 2-an air inlet pipe, 3-a first air outlet pipe, 4-a tempering tower, 5-a cyclone dust collector, 6-a second air outlet pipe, 7-a calcium hydroxide bin, 8-a material conveying valve, 9-a degumming plate, 10-holes, 11-a pressure sensor, 12-a material level meter, 13-a discharge valve, 14-a spiral conveyor, 15-an electric air valve and 16-a temperature sensor.
Detailed Description
Example 1
As shown in fig. 1-3, the present embodiment provides a flue gas conditioning device for a borosilicate support plate glass kiln, which includes an sl304 stainless steel degumming device 1, a rock wool heat insulation layer with a thickness of 50mm is coated outside the degumming device 1, the degumming device 1 is connected with an air inlet pipe 2 and a first air outlet pipe 3, the first air outlet pipe 3 is connected with a conditioning tower 4, the upper part of the conditioning tower 4 is sequentially connected with a two-stage cyclone dust collector 5 through a pipeline, the first-stage cyclone dust collector 5 adopts a rock wool heat insulation layer with a thickness of 50mm, and the second-stage cyclone dust collector 5 adopts a rock wool heat insulation layer with a thickness of 100 mm; the secondary cyclone dust collector 5 is connected with a second air outlet pipe 6, and the second air outlet pipe 6 is connected with an SCR pin removal system; the device also comprises a calcium hydroxide bin 7, wherein a rock wool heat-insulating layer with the thickness of 100mm is coated outside the calcium hydroxide bin 7; a discharge port of the calcium hydroxide bin 7 is connected with the first gas outlet pipe 3, a material conveying valve 8 is arranged on the discharge port, a Roots motor is arranged on the calcium hydroxide bin 7, and a variable frequency conveyor is arranged between the calcium hydroxide bin 7 and the Roots motor to control the amount of calcium hydroxide in the calcium hydroxide bin 7 blown into the first gas outlet pipe 3; four sl304 stainless steel degumming plates 9 with the thickness of 8mm are sequentially arranged in the degumming device 1 at intervals along the flue gas transmission direction, a plurality of holes 10 are formed in the degumming plates 9, the aperture is phi 15mm, the hole spacing is 15mm, and the holes are uniformly distributed on the whole degumming plates 9. The four degumming plates 9 are useful and can be cleaned at any time and reused. Preferably, the holes 10 of adjacent degumming plates 9 are arranged offset.
The working principle is as follows:
the temperature of the flue gas outlet of the borosilicate glass kiln is 400-550 ℃, gaseous diboron trioxide in the flue gas can be changed into gaseous colloid, the glass kiln adopts pure oxygen to support combustion, and the moisture in the flue gas can reach 15%.
Then the flue gas enters the degumming device 1, and the flue gas wind speed in the flue reaches 15-18 m/s. Due to the fact that the holes 10 in the adjacent degumming plates 9 are arranged in a staggered mode, after smoke enters from the micropores of the first degumming plate 9, the smoke can blow to the hole space part of the second degumming plate 9, colloidal substances and aluminum oxide in the smoke are adhered to the hole space position of the degumming plates 9, the smoke enters the third degumming plate 9 from the hole 10 beside the smoke and sequentially goes down, and therefore primary tempering and primary dust removal of the smoke are achieved. Because the degumming device 1 adopts the rock wool heat-insulating layer with the thickness of 50mm, compared with the common rock wool heat-insulating layer with the thickness of 100mm, the pre-cooling of the flue gas can be realized, and the outlet temperature of the degumming device 1 is 380-450 ℃.
At this time, 300 meshes of calcium hydroxide (the size of the calcium hydroxide is 48 microns) is mixed into the first air outlet pipe 3 through a material conveying valve 8 of a calcium hydroxide bin 7, and the mixed flue gas enters the tempering tower 4. In the tempering tower 4, the microporous structure of the calcium hydroxide can adsorb diboron trioxide colloid and moisture in the flue gas, and secondary degumming is formed in the tempering tower 4. Preferably, the upper part and the lower part of the tempering tower 4 are thick sections, the middle part is a thin section and is in an hourglass-shaped structure, and the first air outlet pipe 3 is connected to the thick section at the lower part of the tempering tower 4. The tempering tower 4 adopts a hourglass structure, so that the speed of the flue gas entering the tempering tower 4 can be reduced, and large particles can be settled to the bottom of the tempering tower 4, so that secondary tempering of the flue gas is realized; the small particles will enter the two stage cyclone 5 with the flue gas.
The cyclone dust collector 5 can filter dust with the particle size larger than 5 microns, 99.5 percent of calcium hydroxide in dust-containing flue gas is removed through the primary cyclone dust collector and the secondary cyclone dust collector, secondary dust removal of the flue gas is realized, and the flue gas after dust removal enters the SCR denitration system.
The flue gas of the kiln is subjected to primary tempering and pre-dedusting by the degumming device 1, and then subjected to secondary tempering by the tempering tower 4 and secondary dedusting by the two-stage cyclone dust collector 5, so that the tempering and dedusting of the flue gas are realized. The content of colloidal substances and dust particles in the flue gas entering the SCR denitration system is greatly reduced, the service life of the catalyst is prolonged, and the stability of a kiln process and a denitration system is ensured.
Example 2
On the basis of embodiment 1, a pressure sensor 11 is installed on the degumming device 1, and the pressure sensor 11 is electrically connected with a controller. The pressure sensor 11 can monitor the pressure in the degumming device 1 at any time so as to clean the degumming plate 9 blocked by the colloid for reuse in time.
Example 3
On the basis of embodiment 1, install charge level indicator 12 on the thick section of quenching and tempering tower 4 lower part, be provided with discharge valve 13 on the discharge tube of quenching and tempering tower 4 bottom, discharge valve 13 adopts star type relief valve, can realize the automatic of quenching and tempering tower 4 bottom large granule material ash and discharge.
Example 4
On the basis of the embodiment 1, a discharge pipe at the bottom of the cyclone dust collector 5 is connected with a screw conveyor 14, a discharge valve 13 is arranged on the discharge pipe, and the discharge valve 13 adopts a star-shaped discharge valve; a circulating material pipe of the screw conveyor 14 is connected with a thick section at the lower part of the tempering tower 4, and a material conveying valve 8 is arranged on the circulating material pipe; a discharge valve 13 is mounted on the discharge pipe at the bottom of the screw conveyor 14.
The cyclone dust collector 5 adopts a star-shaped discharging mode, dust removing ash containing calcium hydroxide is discharged into the screw conveyor 14, and the calcium hydroxide is recycled into the tempering tower 4 through the screw conveyor 14 for secondary utilization, so that the operation cost is reduced. When the calcium hydroxide can not achieve the using effect after being repeatedly utilized for many times, the material conveying valve 8 of the screw conveyor 14 is closed, the discharge valve 13 at the bottom of the screw conveyor 14 is opened, and the invalid calcium hydroxide is discharged. New calcium hydroxide is replenished through calcium hydroxide silo 7.
Example 5
On the basis of embodiment 1, the air inlet pipe 2 is provided with the electric air valve 15, the second air outlet pipe 6 is provided with the temperature sensor 16, and the electric air valve 15 and the temperature sensor 16 are respectively and electrically connected with the controller. The electric air valve 15 of the embodiment is used for standby, and according to the temperature of the flue gas entering the SCR denitration system detected by the temperature sensor 16, the controller controls the electric air valve 15 to adjust the amount of the flue gas conveyed to the conditioning device, so as to ensure the stability of the temperature of the flue gas entering the SCR denitration system.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. Borosilicate support plate glass kiln flue gas quenching and tempering device which characterized in that: the device comprises a degumming device (1), wherein the degumming device (1) is connected with an air inlet pipe (2) and a first air outlet pipe (3), the first air outlet pipe (3) is connected with a conditioning tower (4), the upper part of the conditioning tower (4) is sequentially connected with a plurality of cyclone dust collectors (5) through pipelines, and the last cyclone dust collector (5) is connected with a second air outlet pipe (6); the device also comprises a calcium hydroxide bin (7), wherein a discharge hole of the calcium hydroxide bin (7) is connected with the first air outlet pipe (3), and a material delivery valve (8) is arranged on the discharge hole; a plurality of degumming plates (9) are sequentially arranged in the degumming device (1) at intervals along the flue gas transmission direction, and a plurality of holes (10) are formed in the degumming plates (9).
2. The borosilicate carrier glass kiln flue gas conditioning device defined in claim 1, wherein: the holes (10) on the adjacent degumming plates (9) are arranged in a staggered way.
3. The borosilicate carrier glass kiln flue gas conditioning device according to claim 1, wherein: and a pressure sensor (11) is arranged on the degumming device (1).
4. The borosilicate carrier glass kiln flue gas conditioning device according to claim 1, wherein: the upper part and the lower part of the tempering tower (4) are thick sections, the middle part of the tempering tower is a thin section, and the first air outlet pipe (3) is connected to the thick section at the lower part of the tempering tower (4).
5. The borosilicate carrier glass kiln flue gas conditioning device according to claim 4, wherein: a material level meter (12) is installed on the thick section of the lower part of the tempering tower (4), and a discharge valve (13) is arranged on a discharge pipe at the bottom of the tempering tower (4).
6. The borosilicate carrier glass kiln flue gas conditioning device according to claim 5, wherein: a discharge pipe at the bottom of the cyclone dust collector (5) is connected with a spiral conveyor (14), and a discharge valve (13) is arranged on the discharge pipe; a circulating material pipe of the screw conveyor (14) is connected with a thick section at the lower part of the hardening and tempering tower (4), and a material conveying valve (8) is arranged on the circulating material pipe; a discharge valve (13) is arranged on a discharge pipe at the bottom of the screw conveyor (14).
7. The borosilicate carrier glass kiln flue gas conditioning device according to claim 1, wherein: and an electric air valve (15) is installed on the air inlet pipe (2), and a temperature sensor (16) is installed on the second air outlet pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220357520.8U CN217188651U (en) | 2022-02-22 | 2022-02-22 | Borosilicate support plate glass kiln flue gas quenching and tempering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220357520.8U CN217188651U (en) | 2022-02-22 | 2022-02-22 | Borosilicate support plate glass kiln flue gas quenching and tempering device |
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| Publication Number | Publication Date |
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| CN217188651U true CN217188651U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220357520.8U Active CN217188651U (en) | 2022-02-22 | 2022-02-22 | Borosilicate support plate glass kiln flue gas quenching and tempering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217188651U (en) |
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- 2022-02-22 CN CN202220357520.8U patent/CN217188651U/en active Active
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