CN211668885U - Device for simultaneously collecting sulfur dioxide and escaping ammonia in cement plant - Google Patents
Device for simultaneously collecting sulfur dioxide and escaping ammonia in cement plant Download PDFInfo
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Abstract
The utility model discloses a device for simultaneously collecting sulfur dioxide and escaping ammonia in a cement plant, which comprises a filter, a smoke sampling pipe, a first control valve, a second control valve, a first absorption box, a second absorption box, a first buffer bottle, a second buffer bottle and a smoke analyzer, wherein the outlet of the filter is connected with the inlet of the smoke sampling pipe; the inlet of the second absorption box is connected with a second control valve, the outlet of the second absorption box is connected with a second buffer bottle, and the inlet of the flue gas analyzer is connected with two branches in parallel and respectively connected with the outlet of the first buffer bottle and the outlet of the second buffer bottle. The device of the utility model has the advantages of simple structure, portability, short sampling time and high accuracy rate.
Description
Technical Field
The utility model belongs to the flue gas field of handling, concretely relates to device of sulfur dioxide and escape ammonia is gathered simultaneously to cement plant
Background
With the continuous development of cement industry in China, the problems of fine particles and ozone layer pollution caused by nitrogen oxides are increasingly serious, not only are serious harm caused to the environment, but also threat to the physical and mental health of human beings, and most of cement plants use ammonia as a reducing agent to carry out denitration at present, so that a new pollution problem is brought: ammonia escapes. Sulfur dioxide is also one of the main atmospheric pollutants and is a necessary pollutant gas for monitoring the quality of the ambient air. In the current online monitoring of environmental air, sulfur dioxide is mainly detected by an ultraviolet fluorescence method, the use technology of measuring ammonia escape in cement plants in China is not mature, ammonia escape monitoring equipment is not installed in the cement plants on a large scale, and the online ammonia escape monitoring device is subjected to dust, temperature, moisture and SO3The effect of (3) is that the deviation in ammonia slip measurement is large. The two gas detection devices are independent instruments and have the defects of large volume, heavy weight, inconvenient field carrying, complicated calibration and complex maintenance. For portable detection equipment for kiln tail flue gas of a cement plant, the requirements of light weight, small volume, portability and the like need to be met. The standard chemical analysis method for ammonia escape and sulfur dioxide in the flue gas is adopted, and the chemical analysis method can be used forCarry out convenient accurate detection, ammonia escape and sulfur dioxide contain at present and measure and all be solitary sampling equipment, consequently produce one kind and can adapt to the multiple occasion of cement plant, gather to these two kinds of gases simultaneously, can realize that the device of on-the-spot quick installation and detection has important realistic meaning.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a device that can gather sulfur dioxide and escape ammonia simultaneously that light in weight, small easily carry.
The technical scheme is as follows: the utility model relates to a device for simultaneously collecting sulfur dioxide and escaping ammonia in a cement plant, which comprises a filter, a flue gas sampling pipe, a first control valve, a second control valve, a first absorption box, a second absorption box, a first buffer bottle, a second buffer bottle and a flue gas analyzer, wherein the outlet of the filter and the inlet of the flue gas sampling pipe are connected with the outlet of the flue gas sampling pipe and are connected with two branches in parallel, and the outlets are respectively connected with the inlet of the first control valve and the inlet of the second control valve; a plurality of absorption bottles are respectively arranged in the first absorption box and the second absorption box, the inlet of the first absorption box is connected with a first control valve, and the outlet of the first absorption box is connected with a first buffer bottle; the inlet of the second absorption box is connected with a second control valve, and the outlet of the second absorption box is connected with a second buffer bottle; the flue gas analyzer is provided with an air suction pump, can be used for sucking air from a pipeline without additionally arranging a vacuum pump, and monitors nitric oxide, oxygen content and CO in flue gas in real time2And the content of other components, if the content is unstable, the working condition is unstable, and the data is not suitable for sampling or the fluctuation of the acquired data is large.
Further, the flue gas sampling pipe is inner tube, heater strip, heat preservation and outer tube from inside to outside in proper order, the even winding of heater strip is on the outer wall of inner tube.
Furthermore, the inner pipe of the flue gas sampling pipe is provided with a temperature sensor tightly attached to the inner wall, and the heating wire and the temperature sensor are connected to the temperature controller.
Furthermore, the flue gas sampling pipe is divided into a front part and a rear part, the front half part of the inner pipe and the outer pipe are made of stainless steel materials and are 60-80 cm long, the rear half part of the inner pipe and the outer pipe are made of polytetrafluoroethylene materials and are 100-150 cm long, the weight of the pipeline is reduced as much as possible under the requirement of sampling accuracy, and the requirement of on-site application is met.
Furthermore, a first absorption bottle, a second absorption bottle and a third absorption bottle are arranged in the first absorption box, the first absorption bottle is provided with a first air inlet pipe and a first air outlet pipe, the second absorption bottle is provided with a second air inlet pipe and a second air outlet pipe, the third absorption bottle is provided with a third air inlet pipe and a third air outlet pipe, dilute sulfuric acid solution is filled in each absorption bottle, the outlet end of each air inlet pipe is located below the liquid level, the inlet end of each air outlet pipe is located above the liquid level, the inlet end of the first air inlet pipe is connected with a first control valve, the outlet end of the first air outlet pipe is connected with the inlet end of the second air inlet pipe, the outlet end of the second air outlet pipe is connected with the inlet end of the third air inlet pipe, and the outlet end of.
Furthermore, the amount of the dilute sulfuric acid solution in each absorption bottle in the first absorption box is 25-100mL, and the concentration of the dilute sulfuric acid is 0.0025-0.03 mol/L.
Furthermore, a first protection box is arranged in the first absorption box, and a protection layer consisting of sponge is arranged in the first protection box and between the absorption bottles.
Furthermore, a fourth absorption bottle, a fifth absorption bottle and a sixth absorption bottle are arranged in the second absorption box, the fourth absorption bottle is provided with a fourth air inlet pipe and a fourth air outlet pipe, the fifth absorption bottle is provided with a fifth air inlet pipe and a fifth air outlet pipe, the sixth absorption bottle is provided with a sixth air inlet pipe and a sixth air outlet pipe, each absorption bottle is filled with an ammonium sulfamate solution, the outlet end of each air inlet pipe is located below the liquid level, the inlet end of each air outlet pipe is located above the liquid level, the inlet end of the fourth air inlet pipe is connected with the second control valve, the outlet end of the fourth air outlet pipe is connected with the inlet end of the fifth air inlet pipe, the outlet end of the fifth air outlet pipe is connected with the inlet end of the sixth air inlet pipe, and.
Furthermore, each absorption bottle in the second absorption box contains 25-100mL of ammonium sulfamate solution, and the concentration of the ammonium sulfamate solution is 2-20 g/L.
Furthermore, a second protection box is arranged in the second absorption box, and an ice water bath is arranged in the second protection box and around the absorption bottle.
Furthermore, the opening time of the first control valve is 5-20 min, and the opening time of the second control valve is 15-50 min.
Furthermore, the first buffer bottle and the second buffer bottle are both empty bottles, an air inlet pipe and an air outlet pipe are arranged in each empty bottle, the inlet end of the air inlet pipe is connected with the outlet end of the absorption box of the branch where the air inlet pipe is located, and the outlet end of the air outlet pipe is connected with a flue gas analyzer.
The first control valve and the second control valve can be opened simultaneously to collect ammonia escape and sulfur dioxide, and can be opened independently to collect only one gas.
Has the advantages that: a cement plant gathers sulfur dioxide and device of escape ammonia simultaneously, through the absorption box that is equipped with two kinds of different absorption liquids, realize gathering when ammonia escape and sulfur dioxide gas. The flue gas sampling pipe is provided with the filter, can prevent that the dust from getting into the absorption liquid, produces the influence to ammonia escape and sulfur dioxide concentration measurement result. The flue gas sampling pipe is provided with the heating wire and heats the pipeline, can reduce the pipeline and to ammonia and the gaseous absorption of sulfur dioxide, promotes the measuring accuracy. The device light in weight, small easily carry, can realize extracting two kinds of gases simultaneously, through follow-up chemical analysis, can survey ammonia escape and sulfur dioxide concentration in cement plant kiln tail flue gas simultaneously. The collecting device does not need large-scale instruments and equipment, saves cost, has obvious practicability and provides reference for environmental protection acceptance and performance examination of cement in the future.
Drawings
FIG. 1 is a schematic connection diagram of a device for collecting sulfur dioxide and escaped ammonia simultaneously in a cement plant according to the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a flue gas sampling tube of the present invention;
FIG. 3 is a schematic cross-sectional view of the first absorption tank of the present invention;
fig. 4 is a schematic top view of the protective layer according to the present invention;
fig. 5 is a schematic sectional view of the second absorption tank of the present invention.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
As shown in fig. 1, a device for collecting sulfur dioxide and escaped ammonia simultaneously in a cement plant comprises a filter 1, a flue gas sampling pipe 2, a first control valve 3, a second control valve 4, a first absorption tank 5, a second absorption tank 6, a first buffer bottle 7, a second buffer bottle 8 and a flue gas analyzer 9. An outlet of the filter 1 is connected with an inlet of a flue gas sampling pipe 2, the flue gas sampling pipe 2 (shown in figure 2) is sequentially provided with an inner pipe 21, a heating wire 22, a heat preservation layer 23 and an outer pipe 24 from inside to outside, the heating wire 22 is uniformly wound on the outer wall of the inner pipe 21, the inner pipe 21 of the flue gas sampling pipe is provided with a temperature sensor 27 tightly attached to the inner wall, the heating wire 22 and the temperature sensor 27 are connected to a temperature controller 26, the flue gas sampling pipe 2 is divided into a front part and a rear part, the front half inner pipe and the outer pipe are made of stainless steel materials and are 60-80 cm long, the rear half inner pipe and the outer pipe are made of polytetrafluoroethylene materials and are 100-150 cm long, and an outlet of the flue gas sampling pipe is connected with two branches in; a first protection box 55, a first absorption bottle 51, a second absorption bottle 52 and a third absorption bottle 53 are arranged in the first absorption box 5 (shown in figure 3), a protection layer 54 consisting of sponge is arranged inside the first protection box 55 and between the absorption bottles, as shown in figure 4, the absorption bottles are arranged in the holes, three bottles form a group, data of each group are 4 parallel samples, and the two boxes are both. The first absorption bottle 51 is provided with a first air inlet pipe 511 and a first air outlet pipe 512, the second absorption bottle 52 is provided with a second air inlet pipe 521 and a second air outlet pipe 522, the third absorption bottle 53 is provided with a third air inlet pipe 531 and a third air outlet pipe 532, each absorption bottle is filled with dilute sulfuric acid solution, the amount of the dilute sulfuric acid solution in each absorption bottle in the first absorption box 5 is 25-100mL, the concentration of the dilute sulfuric acid is 0.0025-0.03 mol/L, the outlet end of each air inlet pipe is positioned below the liquid level, the inlet section of each air outlet pipe is positioned above the liquid level, the inlet end of the first air inlet pipe 511 is connected with the first control valve 3, the outlet end of the first air outlet pipe 512 is connected with the inlet end of the second air inlet pipe 521, and the outlet end of the second air outlet pipe 522; a second protective box 65, a fourth absorption bottle 61, a fifth absorption bottle 62 and a sixth absorption bottle 63 are arranged in the second absorption box 6 (as shown in fig. 5), an ice water bath 64 is arranged in the second protective box 65 and around the absorption bottles, the fourth absorption bottle 61 is provided with a fourth air inlet pipe 611 and a fourth air outlet pipe 612, the fifth absorption bottle 62 is provided with a fifth air inlet pipe 621 and a fifth air outlet pipe 622, the sixth absorption bottle 63 is provided with a sixth air inlet pipe 631 and a sixth air outlet pipe 632, each absorption bottle is filled with ammonium sulfamate solution, the amount of the ammonium sulfamate solution in each absorption bottle is 25-100mL, the concentration of the ammonium sulfamate solution is 2-20g/L, the outlet end of each air inlet pipe is positioned below the liquid level, the inlet end of each air outlet pipe is positioned above the liquid level, the inlet end of the fourth air inlet pipe 611 is connected with a second control valve 4, the outlet end of the fourth air outlet pipe 612 is connected with the fifth air inlet, the outlet end of the fifth air outlet pipe 622 is connected with the inlet end of a sixth air inlet pipe 631; first buffer bottle 7 and second buffer bottle 8 are empty bottles, are equipped with intake pipe and outlet duct in every empty bottle, and the entrance point of first buffer bottle 7 intake pipe is connected to the exit end of third outlet duct 532, and the entrance point of second buffer bottle 8 intake pipe is connected to the exit end of sixth outlet duct 632, and the outlet duct exit end is connected 9 with flue gas analyzer.
When the device is used, the first control valve 3 and the second control valve 4 can be opened simultaneously to collect ammonia escape and sulfur dioxide, and can also be opened independently to collect only one gas. The opening time of the first control valve 3 is 5-20 min, and the opening time of the second control valve 4 is 15-50 min.
Example 1
Connecting a filter 1 to a flue gas sampling tube 2, wherein the length of the front half part of the flue gas sampling tube is 70cm, the length of the rear half part of the flue gas sampling tube is 125cm, inserting the flue gas sampling tube 2 into a kiln tail chimney of a cement plant, and allowing flue gas 10 to respectively enter a first absorption box and a second absorption box through the filter and the flue gas sampling tube. The first absorption box 5 contains 50mL of dilute sulfuric acid solution, and the concentration of the dilute sulfuric acid is 0.005 mol/L; the absorption bottle in the second absorption box 6 contains 50mL of ammonium sulfamate solution, and the concentration of the ammonium sulfamate solution is 11 g/L. An ice water bath is arranged in the second absorption tank 6. The power is turned on and the temperature controller 26 is turned onThe flue gas sampling tube 2 is preheated, when the temperature of the temperature controller 26 is 200 ℃, the flue gas analyzer 9 is opened, the first control valve 3 and the second control valve 4 are opened at the same time, and the time is recorded. The opening time of the first control valve 3 is 20min and the opening time of the second control valve 4 is 50 min. When the set extraction time is reached, the first control valve 3 and the second control valve 4 are respectively closed, and then the flue gas analyzer 9 is closed. And (3) closing the temperature controller 26 and the power supply, naturally cooling the flue gas sampling tube 2, and taking out the flue gas sampling tube 2 from the kiln tail chimney. The dilute sulfuric acid solutions in the first absorption bottle 51, the second absorption bottle 52 and the third absorption bottle 53 in the first absorption tank 5 are combined and fixed in volume. The dilute sulfuric acid solutions in the fourth absorption bottle 61, the fifth absorption bottle 62 and the sixth absorption bottle 63 in the second absorption tank 6 are combined and fixed in volume. After the combined dilute sulfuric acid and ammonium sulfamate solution is chemically analyzed, the escape ammonia in a chimney at the tail of a kiln of a cement plant is measured to be 3mg/m after calculation3The concentration of sulfur dioxide is 50mg/m3(the concentration range of ammonia escape in national standard is 3-12 mg/m3The concentration of sulfur dioxide is less than 1000mg/m3So the sulfur dioxide concentration data appear to fluctuate relatively large).
Example 2
Connecting a filter 1 to a flue gas sampling tube 2, wherein the length of the front half part of the flue gas sampling tube is 70cm, the length of the rear half part of the flue gas sampling tube is 125cm, inserting the flue gas sampling tube 2 into a kiln tail chimney of a cement plant, and filling a dilute sulfuric acid solution with the concentration of 0.005mol/L in an absorption box of a first absorption box 5; the absorption bottle in the second absorption box 6 contains 50mL of ammonium sulfamate solution, and the concentration of the ammonium sulfamate solution is 11 g/L. An ice water bath is arranged in the second absorption tank 6. Switching on the power supply, opening the temperature controller 26 to preheat the flue gas sampling tube 2, opening the flue gas analyzer 9 when the temperature controller 26 is 200 ℃, simultaneously opening the first control valve 3 and the second control valve 4, and recording the time. The opening time of the first control valve 3 is 10min and the opening time of the second control valve 4 is 40 min. When the set extraction time is reached, the first control valve 3 and the second control valve 4 are respectively closed, and then the flue gas analyzer 9 is closed. And (3) closing the temperature controller 26 and the power supply, naturally cooling the flue gas sampling tube 2, and taking out the flue gas sampling tube 2 from the kiln tail chimney. Will be provided withThe dilute sulfuric acid solutions in the first absorption bottle 51, the second absorption bottle 52 and the third absorption bottle 53 in the first absorption tank 5 are combined and fixed in volume. The dilute sulfuric acid solutions in the fourth absorption bottle 61, the fifth absorption bottle 62 and the sixth absorption bottle 63 in the second absorption tank 6 are combined and fixed in volume. After the combined dilute sulfuric acid and ammonium sulfamate solution is chemically analyzed, the escaping ammonia in a kiln tail chimney of a cement plant is measured to be 8mg/m after calculation3The concentration of sulfur dioxide is 100mg/m3。
Example 3
Connecting a filter 1 to a flue gas sampling tube 2, wherein the length of the front half part of the flue gas sampling tube is 70cm, the length of the rear half part of the flue gas sampling tube is 125cm, inserting the flue gas sampling tube 2 into a kiln tail chimney of a cement plant, the concentration of dilute sulfuric acid in an absorption tank of a first absorption tank 5 is 50mL, the concentration of dilute sulfuric acid is 0.005mol/L, the concentration of ammonium sulfamate in an absorption bottle in a second absorption tank 6 is 50mL, and the concentration of ammonium sulfamate is 11 g/L. An ice water bath is arranged in the second absorption tank 6. Switching on the power supply, opening the temperature controller 26 to preheat the flue gas sampling tube 2, opening the flue gas analyzer 9 when the temperature controller 26 is 200 ℃, simultaneously opening the first control valve 3 and the second control valve 4, and recording the time. The opening time of the first control valve 3 is 5min and the opening time of the second control valve 4 is 25 min. When the set extraction time is reached, the first control valve 3 and the second control valve 4 are respectively closed, and then the flue gas analyzer 9 is closed. And (3) closing the temperature controller 26 and the power supply, naturally cooling the flue gas sampling tube 2, and taking out the flue gas sampling tube 2 from the kiln tail chimney. The dilute sulfuric acid solutions in the first absorption bottle 51, the second absorption bottle 52 and the third absorption bottle 53 in the first absorption tank 5 are combined and fixed in volume. The dilute sulfuric acid solutions in the fourth absorption bottle 61, the fifth absorption bottle 62 and the sixth absorption bottle 63 in the second absorption tank 6 are combined and fixed in volume. After the combined dilute sulfuric acid and ammonium sulfamate solution is chemically analyzed, the escaping ammonia in a kiln tail chimney of a cement plant is measured to be 10mg/m after calculation3The concentration of sulfur dioxide is 250mg/m3。
Example 4
Connecting the filter 1 to a flue gas sampling tube 2, wherein the length of the front half part of the flue gas sampling tube is 60cm, the length of the rear half part of the flue gas sampling tube is 150cm, and sampling the flue gasThe pipe 2 is inserted into a kiln tail chimney of a cement plant, the absorption box of the first absorption box 5 contains 25mL of dilute sulfuric acid solution, and the concentration of the dilute sulfuric acid is 0.005 mol/L; the absorption bottle in the second absorption box 6 contains 25mL of ammonium sulfamate solution, and the concentration of the ammonium sulfamate solution is 2 g/L. An ice water bath is arranged in the second absorption tank 6. Switching on the power supply, opening the temperature controller 26 to preheat the flue gas sampling tube 2, opening the flue gas analyzer 9 when the temperature controller 26 is 200 ℃, simultaneously opening the first control valve 3 and the second control valve 4, and recording the time. The opening time of the first control valve 3 is 25min and the opening time of the second control valve 4 is 50 min. When the set extraction time is reached, the first control valve 3 and the second control valve 4 are respectively closed, and then the flue gas analyzer 9 is closed. And (3) closing the temperature controller 26 and the power supply, naturally cooling the flue gas sampling tube 2, and taking out the flue gas sampling tube 2 from the kiln tail chimney. The dilute sulfuric acid solutions in the first absorption bottle 51, the second absorption bottle 52 and the third absorption bottle 53 in the first absorption tank 5 are combined and fixed in volume. The dilute sulfuric acid solutions in the fourth absorption bottle 61, the fifth absorption bottle 62 and the sixth absorption bottle 63 in the second absorption tank 6 are combined and fixed in volume. After the combined dilute sulfuric acid and ammonium sulfamate solution is chemically analyzed, the ammonia escape in a chimney at the tail of a kiln of a cement plant is measured to be 3mg/m after calculation3The concentration of sulfur dioxide is 30mg/m3。
Example 5
Connecting a filter 1 to a flue gas sampling tube 2, wherein the length of the front half part of the flue gas sampling tube is 80cm, the length of the rear half part of the flue gas sampling tube is 100cm, the flue gas sampling tube 2 is inserted into a kiln tail chimney of a cement plant, and a second absorption box 6 contains 100mL of dilute sulfuric acid solution with the concentration of 0.03 mol/L; the absorption bottle in the second absorption box 6 contains 25mL of ammonium sulfamate solution, and the concentration of the ammonium sulfamate solution is 20 g/L. An ice water bath is arranged in the second absorption tank 6. Switching on the power supply, opening the temperature controller 26 to preheat the flue gas sampling tube 2, opening the flue gas analyzer 9 when the temperature controller 26 is 200 ℃, simultaneously opening the first control valve 3 and the second control valve 4, and recording the time. The opening time of the first control valve 3 is 20min and the opening time of the second control valve 4 is 50 min. When the set extraction time is reached, the first control valve 3 and the second control valve 4 are closed, respectively, and thenThe flue gas analyzer 9 is then turned off. And (3) closing the temperature controller 26 and the power supply, naturally cooling the flue gas sampling tube 2, and taking out the flue gas sampling tube 2 from the kiln tail chimney. The dilute sulfuric acid solutions in the first absorption bottle 51, the second absorption bottle 52 and the third absorption bottle 53 in the first absorption tank 5 are combined and fixed in volume. The dilute sulfuric acid solutions in the fourth absorption bottle 61, the fifth absorption bottle 62 and the sixth absorption bottle 63 in the second absorption tank 6 are combined and fixed in volume. After the combined dilute sulfuric acid and ammonium sulfamate solution is chemically analyzed, the ammonia escape in a chimney at the tail of a kiln of a cement plant is measured to be 6mg/m after calculation3The concentration of sulfur dioxide is 500mg/m3。
Claims (10)
1. A device for simultaneously collecting sulfur dioxide and escaping ammonia in a cement plant is characterized by comprising a filter (1), a flue gas sampling pipe (2), a first control valve (3), a second control valve (4), a first absorption box (5), a second absorption box (6), a first buffer bottle (7), a second buffer bottle (8) and a flue gas analyzer (9), wherein an outlet of the filter (1) is connected with an inlet of the flue gas sampling pipe (2); the outlet of the flue gas sampling pipe (2) is connected with two branches in parallel and is respectively connected with the inlet of the first control valve (3) and the inlet of the second control valve (4); a plurality of absorption bottles are respectively arranged in the first absorption box (5) and the second absorption box (6), the inlet of the first absorption box (5) is connected with the first control valve (3), and the outlet of the first absorption box is connected with the first buffer bottle (7); the inlet of the second absorption box (6) is connected with the second control valve (4), and the outlet of the second absorption box is connected with the second buffer bottle (8); the inlet of the flue gas analyzer (9) is connected with two branches in parallel and is respectively connected with the outlet of the first buffer bottle (7) and the outlet of the second buffer bottle (8).
2. The device for simultaneously collecting sulfur dioxide and escaped ammonia in a cement plant as claimed in claim 1, wherein the flue gas sampling pipe (2) comprises an inner pipe (21), a heating wire (22), an insulating layer (23) and an outer pipe (24) from inside to outside in sequence, and the heating wire (22) is uniformly wound on the outer wall of the inner pipe (21).
3. The device for simultaneously collecting sulfur dioxide and escaping ammonia in a cement plant as claimed in claim 2, wherein the flue gas sampling pipe (2) is divided into a front part and a rear part, the front half inner pipe (21) and the outer pipe (24) are made of stainless steel and have a length of 60-80 cm, and the rear half inner pipe (21) and the outer pipe (24) are made of polytetrafluoroethylene and have a length of 100-150 cm.
4. The device for simultaneously collecting sulfur dioxide and escaped ammonia in the cement plant as claimed in claim 2, wherein the inner pipe (21) of the flue gas sampling pipe (2) is provided with a temperature sensor (27) closely attached to the inner wall, and the heating wire (22) and the temperature sensor (27) are connected to the temperature controller (26).
5. The device for simultaneously collecting sulfur dioxide and escaped ammonia in a cement plant as claimed in claim 1, wherein a first absorption bottle (51), a second absorption bottle (52) and a third absorption bottle (53) are arranged in the first absorption tank (5), the first absorption bottle (51) is provided with a first air inlet pipe (511) and a first air outlet pipe (512), the second absorption bottle (52) is provided with a second air inlet pipe (521) and a second air outlet pipe (522), the third absorption bottle (53) is provided with a third air inlet pipe (531) and a third air outlet pipe (532), each absorption bottle is filled with dilute sulfuric acid solution, the outlet end of each air inlet pipe is positioned below the liquid level, the inlet end of each air outlet pipe is positioned above the liquid level, the inlet end of the first air inlet pipe (511) is connected with the first control valve (3), the outlet end of the first air outlet pipe (512) is connected with the second air inlet pipe (521), the outlet end of the second air outlet pipe (522) is connected with the inlet end of a third air inlet pipe (531), and the outlet end of the third air outlet pipe (532) is connected with a first buffer bottle (7).
6. The device for simultaneously collecting sulfur dioxide and escaped ammonia in a cement plant as claimed in claim 5, wherein the amount of dilute sulfuric acid solution in each absorption bottle in the first absorption tank is 25-100mL, the concentration of dilute sulfuric acid is 0.0025-0.03 mol/L, and a protective layer (54) composed of sponge is arranged between the absorption bottles in the first absorption tank (5).
7. The device for simultaneously collecting sulfur dioxide and escaped ammonia in a cement plant according to claim 1, wherein a fourth absorption bottle (61), a fifth absorption bottle (62) and a sixth absorption bottle (63) are arranged in the second absorption tank (6), the fourth absorption bottle (61) is provided with a fourth air inlet pipe (611) and a fourth air outlet pipe (612), the fifth absorption bottle (62) is provided with a fifth air inlet pipe (621) and a fifth air outlet pipe (622), the sixth absorption bottle (63) is provided with a sixth air inlet pipe (631) and a sixth air outlet pipe (632), each absorption bottle is filled with dilute sulfuric acid solution, the outlet end of each air inlet pipe is positioned below the liquid level, the inlet end of each air outlet pipe is positioned above the liquid level, the inlet end of the fourth air inlet pipe (611) is connected with the second control valve (4), the outlet end of the fourth air outlet pipe (612) is connected with the inlet end of the fifth air inlet pipe (621), the outlet end of the fifth air outlet pipe (622) is connected with the inlet end of a sixth air inlet pipe (631), and the outlet end of the sixth air outlet pipe (632) is connected with a second buffer bottle (8).
8. The device for simultaneously collecting sulfur dioxide and escaped ammonia in a cement plant as claimed in claim 7, wherein each absorption bottle in the second absorption tank (6) contains 25-100mL of ammonium sulfamate solution, the concentration of the ammonium sulfamate solution is 2-20g/L, and an ice water bath (64) is arranged between the absorption bottles in the second absorption tank (6).
9. The device for simultaneously collecting sulfur dioxide and escaping ammonia of a cement plant according to claim 1, wherein the first buffer bottle and the second buffer bottle are both empty bottles.
10. The device for simultaneously collecting sulfur dioxide and escaping ammonia in a cement plant according to claim 1, wherein the first control valve and the second control valve can be opened simultaneously to collect ammonia escaping and sulfur dioxide, or can be opened independently to collect only one gas, the opening time of the first control valve (3) is 5-20 min, and the opening time of the second control valve (4) is 15-50 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020249848.9U CN211668885U (en) | 2020-03-04 | 2020-03-04 | Device for simultaneously collecting sulfur dioxide and escaping ammonia in cement plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020249848.9U CN211668885U (en) | 2020-03-04 | 2020-03-04 | Device for simultaneously collecting sulfur dioxide and escaping ammonia in cement plant |
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| Publication Number | Publication Date |
|---|---|
| CN211668885U true CN211668885U (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020249848.9U Active CN211668885U (en) | 2020-03-04 | 2020-03-04 | Device for simultaneously collecting sulfur dioxide and escaping ammonia in cement plant |
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| CN (1) | CN211668885U (en) |
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2020
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