CN212215115U - Device for dedusting and purifying tail gas of glass melting furnace - Google Patents
Device for dedusting and purifying tail gas of glass melting furnace Download PDFInfo
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- CN212215115U CN212215115U CN202020683201.7U CN202020683201U CN212215115U CN 212215115 U CN212215115 U CN 212215115U CN 202020683201 U CN202020683201 U CN 202020683201U CN 212215115 U CN212215115 U CN 212215115U
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Abstract
The utility model relates to a device for dedusting and purifying tail gas of a glass melting furnace, which comprises a negative pressure main pipe (1) connected with a flue gas interface, wherein an electric air supply valve (2) is arranged on the negative pressure main pipe, the negative pressure main pipe (1) is connected with a spray cooling tower (3), an air outlet (3 d) of the spray cooling tower (3) is connected with a mixer (4), the mixer (4) is connected with a cloth bag dust remover (6) through a mixing pipe (5), the mixing pipe (5) is connected with a negative pressure branch pipe (7), and the negative pressure branch pipe (7) is connected with a calcium hydroxide bin (8); the bag-type dust collector (6) is connected with a recycling port (3 c) of the spray cooling tower (3) through a recycling pipe (11); the outlet of the bag-type dust collector (6) is sequentially connected with a variable frequency fan (14) and a chimney (16) which are connected in parallel. The utility model has the advantages that filter, react, remove dust to the tail gas successive layer, make tail gas unloading up to standard, improve deacidification efficiency, the cyclic utilization material reduces running cost and system pressure fluctuation.
Description
Technical Field
The utility model belongs to the technical field of glass melting furnace tail gas dust removal technology and specifically relates to a device for glass melting furnace tail gas dust removal purification.
Background
The glass industry is an energy consumption and pollution great household of the building material industry, and a glass kiln can generate a great amount of smoke dust, dust and SO during working and running2The dust generation point mainly occurs in the raw material processing and transporting process and the glass melting furnace smelting process, wherein the glass melting furnace is a main pollution source.
The glass melting furnace flue gas contains SO2The environment-friendly and environment-friendly rainwater purification agent has strong corrosivity, and can be combined with rainwater to form acid rain after being discharged into the atmosphere, so that if the main pollutants are not timely and effectively purified and are directly discharged into the atmosphere, the environment of the earth atmosphere, the earth soil and even the life safety of human beings are greatly threatened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is exactly in order to solve the above-mentioned problem that current glass melting furnace tail gas dust removal exists, provides a device for glass melting furnace tail gas dust removal purification, filters, reacts and removes dust to the tail gas successive layer, makes the tail gas after the purification up to standard evacuation, improves deacidification efficiency, reduces running cost and system pressure fluctuation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for dedusting and purifying tail gas of a glass melting furnace comprises a negative pressure main pipe connected with a flue gas interface, wherein a group of electric air supply valves are arranged on the negative pressure main pipe, the negative pressure main pipe is connected with a top inlet of a spray cooling tower, a group of spray guns connected with industrial water are arranged at the upper part of the spray cooling tower, a recovery port is arranged at the middle part of the spray cooling tower, an air outlet is arranged at the lower part of the spray cooling tower, the air outlet is connected with a mixer through a pipeline, a baffle is arranged in the mixer, an outlet of the mixer is connected with a bag-type dust collector through a mixing pipe, a negative pressure branch pipe is connected to the mixing pipe;
an ash hopper below the bag-type dust collector is connected with a recovery pipe, one end of the recovery pipe is connected with a recovery fan, a manual regulating valve is arranged on the recovery pipe, and the recovery pipe is connected with a recovery port in the middle of the spray cooling tower and used for recovering calcium hydroxide in the dust collector;
the outlet of the bag-type dust collector is connected with a group of frequency conversion fans connected in parallel through a pipeline, each frequency conversion fan is connected with an electric butterfly valve, and the frequency conversion fans are connected with a chimney through pipelines so as to be used for emptying the flue gas after dust removal.
Further, the spray gun is a two-fluid spray gun.
Furthermore, a bin top type bag-type dust collector is arranged at the top of the calcium hydroxide bin and used for treating a large amount of raised dust generated during feeding.
Further, all pipelines are negative pressure pipelines, and all are equipped with the sensor on the pipeline to be used for the pressure, temperature, flow and the dew point condition of monitoring gas.
The utility model discloses a device is unified the operation by outside electrical system, and the operational aspect of every equipment is handled automatically, and the data of feedback sensor control in time reacts.
In order to further accomplish the purpose of the utility model, the utility model also provides a method for the dust removal and purification of the tail gas of the glass melting furnace, the used device comprises a spray cooling tower, a mixer, a calcium hydroxide bin and a bag-type dust remover, and the concrete steps are as follows, including:
(1) the temperature of flue gas in the glass kiln is reduced to 450-560 ℃ after being mixed with cold air, the flue gas enters a negative pressure main pipe after being mixed, and meanwhile, an electric air supplement valve is used for controlling the temperature of the flue gas in the negative pressure main pipe;
(2) the treated flue gas with the temperature of 120-400 ℃ enters a spray cooling tower, the top-inlet bottom-outlet direct spraying type is adopted in the spray cooling tower due to the fact that a flue pipe at the top of the spray cooling tower is high, atomized soft water in the tower cools the flue gas, the flue gas has flowing time of at least 15s in the environment with the temperature of less than 80 ℃ in the tower, and the temperature of the flue gas at an air outlet of the spray cooling tower is reduced to 75-80 ℃ so as to facilitate crystallization and granulation of arsenic oxide and boron oxide in tail gas;
(3) cooling, and allowing the flue gas containing water vapor to enter a mixer, wherein a baffle is arranged in the air mixer, and the hydrous calcium hydroxide, boron oxide and arsenic oxide crystals coming out of the spray cooling tower are settled;
(4) then the flue gas enters a mixing pipe to be mixed and reacted with calcium hydroxide from a negative pressure branch pipe, the calcium hydroxide fully absorbs hydrogen chloride and redundant water contained in the flue gas, and the temperature of the flue gas is reduced to be below 65 ℃, so that boron oxide is completely crystallized, and bag pasting of a dust collector is effectively prevented;
(5) the mixed and cooled flue gas enters a bag-type dust collector, is filtered by the bag-type dust collector and then is introduced into a chimney through a variable frequency fan to be discharged into the atmosphere.
Further, in the steps (4) to (5), the calcium hydroxide collected by the ash bucket in the bag-type dust collector is recycled through a recycling pipe and is introduced into the spray cooling tower through a recycling port for recycling.
Compared with the prior art, the utility model has the advantages of specifically lie in:
(1) a certain air speed and temperature in the negative pressure main pipe are controlled, so that dust and scale deposition in the pipeline can be effectively avoided, and pipeline blockage caused by precipitation of boron oxide can also be avoided;
(2) the characteristics of arsenic oxide and boron oxide are fully considered, and the temperature of the flue gas of each pipeline is reasonably set according to the characteristics of the arsenic oxide and the boron oxide, so that the arsenic oxide and the boron oxide are recrystallized, and the standard emission of the flue gas is met;
(3) when only one kiln or two kilns are used for production, the water spraying amount can be reduced, the temperature of the flue gas entering the dust remover is reduced to a proper temperature by doping cold air, and the filter bag pasting caused by excessive water spraying can be effectively avoided by additionally arranging the mixer;
(4) calcium hydroxide collected by the dust remover is added into the spray cooling tower, so that the deacidification effect is better, the use amount of the calcium hydroxide is reduced, the operation cost is reduced, the water content of flue gas discharged from the tower is reduced, and bag pasting is avoided;
(5) the whole system has simple and reliable control flow and small system operation pressure fluctuation.
Drawings
FIG. 1 is a process flow chart of a method for dedusting and purifying tail gas of a glass melting furnace of the utility model;
fig. 2 is a schematic structural diagram of the spray cooling tower of the present invention.
Detailed Description
Example 1
In order to make the present invention more clearly understood, the following description is made with reference to the accompanying drawings, which are used to explain the present invention, and the embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.
Referring to fig. 1, a device for glass melting furnace tail gas dust removal purification, includes the negative pressure house steward 1 who links to each other with the flue gas interface, its characterized in that:
referring to fig. 1 and 2, three electric air supply valves 2 are arranged on a negative pressure main pipe 1, the negative pressure main pipe 1 is connected with a top inlet 3a of a spray cooling tower 3, the upper part of the spray cooling tower 3 is provided with a group of spray guns 3b connected with industrial water, the middle part of the spray cooling tower 3 is provided with a recovery port 3c, the lower part of the spray cooling tower is provided with an air outlet 3d, the air outlet 3d is connected with a mixer 4 through a pipeline, a baffle 4a is arranged in the mixer 4, the outlet of the mixer 4 is connected with a bag-type dust remover 6 through a mixing pipe 5, the mixing pipe 5 is connected with a negative pressure branch pipe 7, the negative pressure branch pipe 7 is connected with a calcium hydroxide bin 8, the bottom of the calcium hydroxide bin 8 is provided with a star-shaped discharge valve 10, and the top;
an ash bucket below the bag-type dust collector 8 is connected with a recovery pipe 11, one end of the recovery pipe 11 is connected with a recovery fan 12, a manual regulating valve 13 is arranged on the recovery pipe 11, and the recovery pipe 11 is connected with a recovery port 3c in the middle of the spray cooling tower 3 and used for recovering calcium hydroxide in the dust collector;
the outlet of the bag-type dust collector 8 is connected with a group of frequency conversion fans 14 connected in parallel through a pipeline, each frequency conversion fan 14 is connected with an electric butterfly valve 15, and each frequency conversion fan 14 is connected with a chimney 16 through a pipeline so as to be used for exhausting the dedusted flue gas;
the spray gun 3b is a two-fluid spray gun, all pipelines are negative pressure pipelines, and sensors 17 are arranged on the pipelines and used for monitoring the pressure, temperature, flow and dew point conditions of gas.
The utility model discloses a device is unified the operation by outside electrical system, and the operational aspect of every equipment is handled automatically, and the data of feedback sensor control in time reacts.
The method for dedusting and purifying the tail gas of the glass melting furnace by using the device comprises the following specific steps, and is characterized by comprising the following steps:
(1) the temperature of flue gas in the glass kiln is reduced to 450-560 ℃ after being mixed with cold air, the flue gas enters a negative pressure main pipe 1 with the length of 26 meters after being mixed, and meanwhile, an electric air supplement valve 2 is used for controlling the temperature of the flue gas in the negative pressure main pipe 1;
(2) the treated flue gas with the temperature of 120-400 ℃ enters a spray cooling tower 3, the spray cooling tower 3 adopts a top-in bottom-out direct spraying type due to a higher furnace top flue pipe, atomized soft water in the tower cools the flue gas, the design of the spray cooling tower 3 ensures that the flue gas has flowing time of at least 15s in the environment with the temperature of less than 80 ℃ in the tower, and the outlet flue gas temperature is controlled at 75-80 ℃, so that arsenic oxide and boron oxide in tail gas can be conveniently crystallized;
(3) the cooled flue gas containing water vapor enters a mixer 4, a baffle 4a is arranged in the air mixer 4, and the hydrous calcium hydroxide, boron oxide and arsenic oxide crystals coming out of the spray cooling tower 3 are settled;
(4) then the flue gas enters a mixing pipe 5 to be mixed and reacted with calcium hydroxide from a branch pipe 7, a calcium hydroxide bin 8 is arranged on one side of the pipeline and is directly added into a negative pressure branch pipe 7 through a star-shaped discharge valve 10, and the negative pressure branch pipe 7 is connected into the mixing pipe 5 at a high speed side with the wind speed of about 30m/s so as to ensure that the flue gas and the flue gas are completely mixed in the air mixer without other additional power;
(5) the calcium hydroxide fully absorbs the hydrogen chloride and the redundant water contained in the flue gas, and the temperature of the flue gas is reduced to be below 65 ℃, so that the boron oxide is completely crystallized, and the bag pasting of a dust collector is effectively prevented;
(6) the mixed and cooled flue gas enters a bag-type dust collector 6, is filtered by the bag-type dust collector 6 and then is introduced into a chimney 16 with the height of 60 meters through a variable frequency fan 14 to be discharged into the atmosphere;
(7) calcium hydroxide collected by an ash bucket in the bag-type dust collector 6 is recycled through the recycling pipe 11 and is introduced into the spray cooling tower 3 through the recycling port 3c for reuse, so that the deacidification capacity is increased, and the consumption of the calcium hydroxide is reduced.
In order to ensure the adding amount of the calcium hydroxide, the star-shaped discharge valve is controlled by frequency conversion, the calcium hydroxide is added into a bin by a tank truck or is lifted to the bin top by an electric motor at regular time, and is manually added into the bin, a large amount of raised dust is generated during feeding, and a bin top type bag-type dust collector is arranged at the top of the calcium hydroxide bin.
The whole dust removal system comprises a pipeline system, a spray cooling system, a bag-type dust remover, a dust discharging system, an alkali adding system and the like, the control flow is simple and reliable, the fluctuation of system operation pressure is small, dust accumulation and scaling of the pipeline and bag pasting of a filter bag of the dust remover can be avoided, materials can be recycled, the operation cost is reduced, tail gas is filtered, reacted and dedusted layer by layer, the purified tail gas is discharged to the air to reach the standard, and the deacidification efficiency is improved.
In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (4)
1. The utility model provides a device for glass melting furnace tail gas dust removal purifies, includes the negative pressure house steward (1) that links to each other with the flue gas interface, its characterized in that:
the negative pressure main pipe (1) is provided with a group of electric air supply valves (2), the negative pressure main pipe (1) is connected with a top inlet (3 a) of a spray cooling tower (3), the upper part of the spray cooling tower (3) is provided with a group of spray guns (3 b), the middle part of the spray cooling tower is provided with a recovery port (3 c), the lower part of the spray cooling tower is provided with an air outlet (3 d), the air outlet (3 d) is connected with a mixer (4) through a pipeline, a baffle (4 a) is arranged in the mixer, an outlet of the mixer (4) is connected with a bag-type dust collector (6) through a mixing pipe (5), the mixing pipe (5) is connected with a negative pressure branch pipe (7), and the negative pressure branch;
the lower part of the bag-type dust collector (6) is connected with a recovery pipe (11), one end of the recovery pipe (11) is connected with a recovery fan (12), a manual regulating valve (13) is arranged on the recovery pipe (11), and the recovery pipe (11) is connected with a recovery port (3 c) in the middle of the spray cooling tower (3);
the outlet of the bag-type dust collector (6) is connected with a group of frequency conversion fans (14) which are connected in parallel through pipelines, and the frequency conversion fans (14) are connected with a chimney (16) through pipelines.
2. The device for dedusting and purifying the tail gas of the glass melting furnace according to claim 1, characterized in that:
all pipelines are negative pressure pipelines, and all pipelines are provided with sensors (17).
3. The device for dedusting and purifying the tail gas of the glass melting furnace according to claim 1 or 2, which is characterized in that:
the top of the calcium hydroxide bin (8) is provided with a bin top type bag-type dust collector (9).
4. The device for dedusting and purifying the tail gas of the glass melting furnace according to claim 1 or 2, which is characterized in that:
the spray gun (3 b) is a two-fluid spray gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020683201.7U CN212215115U (en) | 2020-04-29 | 2020-04-29 | Device for dedusting and purifying tail gas of glass melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020683201.7U CN212215115U (en) | 2020-04-29 | 2020-04-29 | Device for dedusting and purifying tail gas of glass melting furnace |
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| Publication Number | Publication Date |
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| CN212215115U true CN212215115U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020683201.7U Active CN212215115U (en) | 2020-04-29 | 2020-04-29 | Device for dedusting and purifying tail gas of glass melting furnace |
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- 2020-04-29 CN CN202020683201.7U patent/CN212215115U/en active Active
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