CN212548974U - Exhaust treatment device for steel pipe acid washing - Google Patents
Exhaust treatment device for steel pipe acid washing Download PDFInfo
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- CN212548974U CN212548974U CN202022661354.4U CN202022661354U CN212548974U CN 212548974 U CN212548974 U CN 212548974U CN 202022661354 U CN202022661354 U CN 202022661354U CN 212548974 U CN212548974 U CN 212548974U
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Abstract
The utility model provides a waste gas treatment device for steel pipe acid washing, which comprises an acid washing device, an air suction cover, a first alkali washing spray tower, a second alkali washing spray tower, a third alkali washing spray tower and an alkali liquor tank; a water vapor collecting box is communicated with an air outlet of the third alkaline washing spray tower; the vapor collecting box is fixedly arranged on the top wall of the third alkaline washing spray tower, the gas outlet of the third alkaline washing spray tower is communicated with the gas inlet of the vapor collecting box, the vapor collecting box is internally and fixedly provided with a first condensing plate and a second condensing plate, the second condensing plate is provided with a vent hole, and a water floating preventer is fixedly arranged in the vent hole. The utility model discloses a waste gas treatment device for steel pipe pickling is provided with the moisture collecting box and can collects the moisture that contains in the exhaust gas to the water economy consumption, reduce cost.
Description
Technical Field
The utility model belongs to the technical field of pickling installation for the metalworking, especially, relate to a waste gas treatment device for steel pipe pickling.
Background
Pickling of steel pipes means that the steel is given a clean and active surface in order to guarantee the surface quality of the produced steel pipes, in order to obtain such a surface, the scale of the surface is removed.
When the steel pipe enters the pickling device for pickling, a large amount of acid gas is generated, and if the acid gas is directly discharged into the air, the environment is polluted. Therefore, it is necessary to design an exhaust gas treatment device for purifying the exhaust gas to protect the environment. The waste gas after being treated in the existing waste gas treatment device is directly discharged, but more water vapor exists in the discharged waste gas, and the waste gas is not recycled and directly sent to the air, so that the waste of resources is easily caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a waste gas treatment device for steel pipe pickling, be provided with the moisture collecting box and can collect the moisture that contains in the exhaust gas to practice thrift the water consumption, reduce cost.
In order to solve the technical problem, the utility model discloses a technical scheme is: a waste gas treatment device for steel pipe acid washing comprises an acid washing device, an air suction cover, a first alkali washing spray tower, a second alkali washing spray tower, a third alkali washing spray tower and an alkali liquor tank; the gas suction cover is buckled at a gas outlet of the acid washing device and is communicated with a gas inlet of a first alkaline washing spray tower through a first gas inlet pipe, a gas outlet of the first alkaline washing spray tower is communicated with a gas inlet of a second alkaline washing spray tower through a second gas inlet pipe, and a gas outlet of the second alkaline washing spray tower is communicated with a gas inlet of a third alkaline washing spray tower through a third gas inlet pipe;
liquid inlets of the first alkaline washing spray tower, the second alkaline washing spray tower and the third alkaline washing spray tower are communicated with an alkaline solution tank through alkaline solution pipes, and pumps are arranged on the alkaline solution pipes; the liquid outlets of the first alkaline washing spray tower, the second alkaline washing spray tower and the third alkaline washing spray tower are communicated with an alkaline solution tank through return pipes;
a water vapor collecting box is communicated with an air outlet of the third alkaline washing spray tower; the vapor collecting box is fixedly arranged on the top wall of the third alkaline washing spray tower, the gas outlet of the third alkaline washing spray tower is communicated with the gas inlet of the vapor collecting box, the vapor collecting box is internally and fixedly provided with a first condensing plate and a second condensing plate, the second condensing plate is provided with a vent hole, and a water floating preventer is fixedly arranged in the vent hole.
In this technical scheme, be provided with the moisture collecting box and be used for collecting the moisture that contains in the gas that will wait to discharge to the recovery is recycled, reducible water consumption, water economy resource and then reduce cost. Wherein, first condensing plate and second condensing plate are arranged in cooling the condensation with the moisture in the waste gas, and waste gas enters into the steam collecting box by the third alkali wash spray tower, with first condensing plate contact, part steam is condensed, later flow down along first condensing plate, later waste gas and second condensing plate contact, part steam is condensed, later flow down along the second condensing plate, last waste gas is further held back the moisture wherein through preventing the drift hydrophone, later waste gas passes through the discharge port and discharges in the air.
Further, a discharge port is arranged on the top wall of the vapor collection box; and a liquid outlet is formed in the bottom wall of the water vapor collecting box and communicated with a third alkaline washing spray tower through a liquid return pipe.
Further, the first condensation plate comprises an inclined plate and a flat plate, and one end of the inclined plate is fixed on the side wall of the water vapor collection box.
Further, the second condensation plate divides the vapor collection box into two parts, and the second condensation plate is disposed on the upper side of the first condensation plate.
Further, a filtering device is arranged at an air inlet of the first alkaline washing spray tower, and a filter screen and an activated carbon filled adsorption layer are arranged in the filtering device.
In this scheme, be provided with filter equipment in the air inlet department of first alkali wash spray tower, filter impurity such as silt in the waste gas, prevent to cause the influence to subsequent equipment in back.
Furthermore, transition structures are arranged in the first alkaline washing spray tower, the second alkaline washing spray tower and the third alkaline washing spray tower, and the transition structures are hollow structures formed by polypropylene, polyvinyl chloride or ceramic materials.
In the technical scheme, the transition structure is arranged in the alkaline washing spray tower, so that the contact time of acid gas and alkaline water can be prolonged, and the reaction is accelerated.
Further, spraying devices are arranged at the tops of the first alkaline washing spray tower, the second alkaline washing spray tower and the third alkaline washing spray tower and communicated with an alkaline liquid pipe.
Further, the spraying device comprises a spraying main pipe, a spraying ring pipe and spray heads, wherein the spraying main pipe is communicated with the alkaline liquor pipe, the spraying main pipe is provided with a plurality of spraying ring pipes, and the spraying main pipe and the spraying ring pipes are provided with a plurality of spray heads.
In this technical scheme, spray set is responsible for and a plurality of spray ring pipe by spraying and is constituteed, and sprays and be provided with a plurality of shower nozzle on being responsible for and the spray ring pipe, can realize many areas, spray on a large scale, and then improves the area of contact of sour gas and buck.
Further, the inner wall of the bottom of the air suction cover is provided with threads, the air suction cover is fixed on the side wall of the top of the pickling device through the threads, and the inner wall of the air suction cover is attached to the outer wall of the top cover of the cleaning device.
In this technical scheme, cover and belt cleaning device threaded connection of breathing in, the cover inner wall of breathing in simultaneously sets up with belt cleaning device's top cap outer wall laminating, when absorbing waste gas, can prevent that waste gas from leaking, environmental protection.
Further, all be provided with the fan on first intake pipe, the second intake pipe and the third intake pipe.
The utility model has the advantages and positive effects that:
1. the utility model discloses be provided with the moisture collecting box and be arranged in will treating the moisture that contains in the gas that discharges and collect to the recovery is recycled, reducible water consumption, water economy resource and then reduce cost.
2. Be provided with filter equipment in the air inlet department of first alkali wash spray column, filter impurity such as silt in the waste gas, prevent to cause the influence to subsequent equipment in back.
3. The cover of breathing in and belt cleaning device threaded connection, the cover inner wall of breathing in simultaneously sets up with belt cleaning device's top cap outer wall laminating, when absorbing waste gas, can prevent that waste gas from leaking, environmental protection.
4. The spraying device is composed of a spraying main pipe and a plurality of spraying ring pipes, and the spraying main pipe and the spraying ring pipes are provided with a plurality of spray heads, so that multi-area and large-range spraying can be realized, and the contact area of acid gas and alkaline water is further improved.
5. The alkaline washing spray tower is internally provided with a transition structure, so that the contact time of acid gas and alkaline water can be prolonged, and the reaction is accelerated.
Drawings
FIG. 1 is a schematic structural view of an exhaust gas treatment device for steel pipe pickling according to the present invention;
FIG. 2 is a sectional view of the waste gas treatment apparatus for steel pipe pickling of the present invention;
FIG. 3 is an enlarged view of the structure B of FIG. 2;
FIG. 4 is a cross-sectional view of the A-A structure of FIG. 3;
FIG. 5 is a sectional view of an air suction hood of the exhaust gas treatment device for steel pipe pickling of the present invention;
in the figure:
1-a pickling device; 2-a suction hood; 3-a first alkaline washing spray tower; 4-a second alkaline washing spray tower; 5-a third alkaline washing spray tower; 6-a lye tank;
7-a water vapor collecting box, 701-a first condensing plate, 7011-an inclined plate, 7012-a flat plate, 702-a second condensing plate, 703-a discharge port, 704-a liquid discharge port and 705-a liquid return pipe;
8 a-a first air inlet pipe, 8 b-a second air inlet pipe, and 8 c-a third air inlet pipe;
9-alkali liquor tube; 10-a pump; 11-a return pipe; 12-a water drift prevention device; 13-a transition structure; 14-a fan;
15-a spray device, 151-a spray main pipe, 152-a spray ring pipe and 153-a spray head;
16-filtration device.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
Example (b):
referring to fig. 1 and 2: a waste gas treatment device for steel pipe acid cleaning comprises an acid cleaning device 1, an air suction hood 2, a first alkali cleaning spray tower 3, a second alkali cleaning spray tower 4, a third alkali cleaning spray tower 5 and an alkali liquor tank 6; the gas suction cover 2 is buckled at the gas outlet of the acid washing device 1, the gas suction cover 2 is communicated with the gas inlet of the first alkaline washing spray tower 3 through a first gas inlet pipe 8a, the gas outlet of the first alkaline washing spray tower 3 is communicated with the gas inlet of the second alkaline washing spray tower 4 through a second gas inlet pipe 8b, and the gas outlet of the second alkaline washing spray tower 4 is communicated with the gas inlet of the third alkaline washing spray tower 5 through a third gas inlet pipe 8 c;
the liquid inlets of the first alkaline washing spray tower 3, the second alkaline washing spray tower 4 and the third alkaline washing spray tower 5 are communicated with a lye tank 6 through a lye pipe 9, and a pump 10 is arranged on the lye pipe 9; the liquid outlets of the first alkali washing spray tower 3, the second alkali washing spray tower 4 and the third alkali washing spray tower 5 are communicated with a lye tank 6 through a return pipe 11;
and the air outlet of the third alkaline washing spray tower 5 is communicated with a water vapor collecting box 7. When the device is used, waste gas generated in the pickling device 1 enters the first alkali washing spray tower 2 through the air suction cover 2 and the first air inlet pipe 8a to carry out first alkali washing spray, the purified waste gas enters the second alkali washing spray tower 8b through the second air inlet pipe 8b to carry out second alkali washing spray, the purified waste gas enters the third alkali washing spray tower 8c through the third air inlet pipe 8c to carry out third alkali washing spray, and finally the gas enters the water vapor collection box 7 through the third alkali washing spray tower 8c to recover moisture, and the purified waste gas is discharged from the discharge port 703 at the top of the water vapor collection box 7.
As shown in fig. 3: the vapor collection box 7 is fixedly arranged on the top wall of the third alkaline washing spray tower 5, the gas outlet of the third alkaline washing spray tower 5 is communicated with the gas inlet of the vapor collection box 7, the vapor collection box 7 is internally and fixedly provided with a first condensation plate 701 and a second condensation plate 702, the second condensation plate 702 is provided with a vent hole, and the vent hole is internally and fixedly provided with a drift-proof water device 12.
The first condensation plate 701 and the second condensation plate 702 are arranged for cooling and condensing moisture in the exhaust gas, the exhaust gas enters the moisture collecting box 7 from the third alkaline washing spray tower 5, contacts with the first condensation plate 701, part of the moisture is condensed, then flows downwards along the first condensation plate 701, the exhaust gas contacts with the second condensation plate 702, part of the moisture is condensed, then flows downwards along the second condensation plate 702, finally the exhaust gas further traps the moisture in the exhaust gas through the drift preventer 12, and the exhaust gas is discharged into the air through the discharge port 703; in the process, most of water vapor in the waste gas is collected and recycled by the water vapor collecting box 7, so that water resources can be saved, waste is prevented, and the cost is saved.
Referring to fig. 3, a discharge port 703 is provided on the top wall of the moisture collection tank 7; a liquid outlet 704 is arranged on the bottom wall of the vapor collection box 7, and the liquid outlet 704 is communicated with the third alkaline washing spray tower 5 through a liquid return pipe 705. The liquid return pipe 705 is arranged to communicate the vapor collection box 7 with the third alkaline washing spray tower 5, and water recovered in the vapor collection box 7 can be discharged into the third alkaline washing spray tower 5 through the liquid return pipe 705 and then returned into the alkaline solution tank 6 through the return pipe 11, so that the recovered water can be reused.
Referring to fig. 3, the first condensation plate 701 includes an inclined plate 7011 and a flat plate 7012, and one end of the inclined plate 7011 is fixed to a side wall of the moisture collection tank 7. The second condensation plate 702 divides the moisture collection tank 7 into two parts, and the second condensation plate 702 is disposed on the upper side of the first condensation plate 701. So design first condensing plate 701 and second condensing plate 702, be convenient for plan the passageway of waste gas, and then improve the condensation efficiency of steam to increase the rate of recovery of steam.
Referring to fig. 2, a filter device 16 is arranged at an air inlet of the first alkaline washing spray tower 3, and a filter screen and an activated carbon-filled adsorption layer are arranged in the filter device. The filtering device 16 is arranged for filtering impurities such as dust in the waste gas, so that the gas entering the alkaline washing spray tower is clean, the influence on subsequent equipment is reduced, and the service life is prolonged.
Referring to fig. 2, transition structures 13 are arranged in the first alkaline washing spray tower 3, the second alkaline washing spray tower 4 and the third alkaline washing spray tower 5, and the transition structures 13 are hollow structures made of polypropylene, polyvinyl chloride or ceramic materials. The transition structure 13 is provided for increasing the contact area and contact time of the wastewater and the alkaline water, thereby improving the reaction efficiency and the purification degree.
Referring to fig. 2 and 4, a spray device 15 is arranged at the top of the first alkaline washing spray tower 3, the second alkaline washing spray tower 4 and the third alkaline washing spray tower 5, and the spray device 15 is communicated with the alkaline liquid pipe 9. The spraying device 15 comprises a spraying main pipe 151, a spraying ring pipe 152 and spray heads 153, the spraying main pipe 151 is communicated with the alkaline liquid pipe 9, the spraying main pipe 151 is provided with a plurality of spraying ring pipes 152, and the spraying main pipe 151 and the spraying ring pipes 152 are provided with a plurality of spray heads 153. The spraying device 15 is composed of a spraying main pipe 151 and a plurality of spraying ring pipes 152, and the spraying main pipe 151 and the spraying ring pipes 152 are provided with a plurality of spray heads 153, so that multi-area and large-range spraying can be realized, and the contact area of acid gas and alkaline water is further improved.
Referring to fig. 5, the inner wall of the bottom of the air suction cover 2 is provided with threads, the air suction cover 2 is fixed on the side wall of the top of the pickling device 1 through the threads, and the inner wall of the air suction cover 2 is attached to the outer wall of the top cover of the cleaning device 1. Suction hood 2 and belt cleaning device 1 threaded connection, the top cap outer wall laminating setting of 2 inner walls of suction hood and belt cleaning device 1 simultaneously can prevent that waste gas from leaking, environmental protection when absorbing waste gas.
Referring to fig. 1 and 2, a fan 14 is disposed on each of the first air inlet pipe 8a, the second air inlet pipe 8b, and the third air inlet pipe 8 c. A fan 14 is provided to facilitate the delivery of the exhaust gases.
The utility model discloses when using:
waste gas generated in the pickling device 1 enters the filtering device 16 for filtering through the suction cover 2 and the first air inlet pipe 8a under the suction force of the fan 14;
the filtered waste gas enters a first alkaline washing spray tower 3 for alkaline washing by spraying, and at the moment, acid in the waste gas reacts with alkaline liquor to remove part of the acid;
then the waste gas enters a second alkali washing spray tower 4 through a second gas inlet pipe 8b for alkali washing by spraying, and the rest acid is removed;
then the waste gas enters a third alkali washing spray tower 5 through a third air inlet pipe 8c for alkali washing spraying again so as to remove residual acid;
the purified waste gas enters a water vapor collecting box 7 from a third alkaline washing spray tower 5 for water vapor recovery, the purified waste gas is firstly contacted with a first condensing plate 701, part of water vapor is condensed, then flows downwards along the first condensing plate 701, the waste gas is contacted with a second condensing plate 702, part of water vapor is condensed, then flows downwards along the second condensing plate 702, finally the waste gas further intercepts the moisture in the waste gas through a drift preventer 12, and the waste gas is discharged into the air through a discharge port 703;
the water recovered in the vapor collection tank 7 is discharged to the third caustic wash spray tower 5 through the liquid return pipe 705, and then returned to the caustic bath 6 through the return pipe 11, so that the recovered water is reused.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. A waste gas treatment device for steel pipe acid cleaning comprises an acid cleaning device (1), an air suction cover (2), a first alkali cleaning spray tower (3), a second alkali cleaning spray tower (4), a third alkali cleaning spray tower (5) and an alkali liquor tank (6);
the gas suction cover (2) is buckled at the gas outlet of the acid washing device (1), the gas suction cover (2) is communicated with the gas inlet of the first alkali washing spray tower (3) through a first gas inlet pipe (8 a), the gas outlet of the first alkali washing spray tower (3) is communicated with the gas inlet of the second alkali washing spray tower (4) through a second gas inlet pipe (8 b), and the gas outlet of the second alkali washing spray tower (4) is communicated with the gas inlet of the third alkali washing spray tower (5) through a third gas inlet pipe (8 c);
liquid inlets of the first alkaline washing spray tower (3), the second alkaline washing spray tower (4) and the third alkaline washing spray tower (5) are communicated with an alkaline solution tank (6) through alkaline solution pipes (9), and a pump (10) is arranged on the alkaline solution pipes (9); the liquid outlets of the first alkali washing spray tower (3), the second alkali washing spray tower (4) and the third alkali washing spray tower (5) are communicated with an alkali liquor tank (6) through a return pipe (11);
the method is characterized in that: a water vapor collecting box (7) is communicated with an air outlet of the third alkaline washing spray tower (5); the steam collecting box (7) is fixedly arranged on the top wall of the third alkaline washing spray tower (5), the gas outlet of the third alkaline washing spray tower (5) is communicated with the gas inlet of the steam collecting box (7), a first condensing plate (701) and a second condensing plate (702) are fixedly arranged in the steam collecting box (7), a vent hole is formed in the second condensing plate (702), and a water drift preventer (12) is fixedly arranged in the vent hole.
2. The exhaust gas treatment device for steel pipe pickling according to claim 1, characterized in that: a discharge port (703) is arranged on the top wall of the vapor collection box (7); and a liquid outlet (704) is formed in the bottom wall of the water vapor collection box (7), and the liquid outlet (704) is communicated with the third alkaline washing spray tower (5) through a liquid return pipe (705).
3. The exhaust gas treatment device for steel pipe pickling according to claim 2, characterized in that: the first condensation plate (701) comprises an inclined plate (7011) and a flat plate (7012), and one end of the inclined plate (7011) is fixed on the side wall of the water vapor collection box (7).
4. The exhaust gas treatment device for steel pipe pickling according to claim 2, characterized in that: the second condensation plate (702) divides the moisture collection box (7) into two parts, and the second condensation plate (702) is arranged on the upper side of the first condensation plate (701).
5. The exhaust gas treatment device for steel pipe pickling according to claim 1, characterized in that: and a filtering device (16) is arranged at an air inlet of the first alkaline washing spray tower (3), and a filter screen and an activated carbon filled adsorption layer are arranged in the filtering device.
6. The exhaust gas treatment device for steel pipe pickling according to claim 1, characterized in that: transition structures (13) are arranged in the first alkaline washing spray tower (3), the second alkaline washing spray tower (4) and the third alkaline washing spray tower (5), and the transition structures (13) are hollow structures formed by polypropylene, polyvinyl chloride or ceramic materials.
7. The exhaust gas treatment device for steel pipe pickling according to any one of claims 1 to 6, characterized in that: and the top parts of the first alkali washing spray tower (3), the second alkali washing spray tower (4) and the third alkali washing spray tower (5) are provided with spray devices (15), and the spray devices (15) are communicated with an alkali liquor pipe (9).
8. The exhaust gas treatment device for steel pipe pickling according to claim 7, characterized in that: the spraying device (15) comprises a spraying main pipe (151), a spraying ring pipe (152) and spray heads (153), wherein the spraying main pipe (151) is communicated with an alkaline liquor pipe (9), the spraying main pipe (151) is provided with a plurality of spraying ring pipes (152), and the spraying main pipe (151) and the spraying ring pipes (152) are provided with a plurality of spray heads (153).
9. The exhaust gas treatment device for steel pipe pickling according to claim 1, characterized in that: be provided with the screw thread on the bottom inner wall of cover (2) of breathing in, cover (2) threaded fixation is on the lateral wall at pickling installation (1) top of breathing in, the inner wall of cover (2) of breathing in sets up with the top cap outer wall laminating of pickling installation (1).
10. The exhaust gas treatment device for steel pipe pickling according to claim 1, characterized in that: and fans (14) are arranged on the first air inlet pipe (8 a), the second air inlet pipe (8 b) and the third air inlet pipe (8 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022661354.4U CN212548974U (en) | 2020-11-17 | 2020-11-17 | Exhaust treatment device for steel pipe acid washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022661354.4U CN212548974U (en) | 2020-11-17 | 2020-11-17 | Exhaust treatment device for steel pipe acid washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212548974U true CN212548974U (en) | 2021-02-19 |
Family
ID=74621758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022661354.4U Active CN212548974U (en) | 2020-11-17 | 2020-11-17 | Exhaust treatment device for steel pipe acid washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212548974U (en) |
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2020
- 2020-11-17 CN CN202022661354.4U patent/CN212548974U/en active Active
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