CN210021694U - Corrosive dust and waste gas treatment system - Google Patents
Corrosive dust and waste gas treatment system Download PDFInfo
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- CN210021694U CN210021694U CN201822220959.2U CN201822220959U CN210021694U CN 210021694 U CN210021694 U CN 210021694U CN 201822220959 U CN201822220959 U CN 201822220959U CN 210021694 U CN210021694 U CN 210021694U
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- spray tower
- pipeline
- draught fan
- treatment system
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Abstract
The utility model discloses a corrosive dust and waste gas treatment system, which comprises a gas collecting hood No. 1, a gas collecting hood No. 2, a draught fan No. 1, a primary spray tower, a draught fan No. 2, a secondary spray tower, a draught fan No. 3 and an exhaust funnel; the number 1 gas collecting hood is connected with a number 1 draught fan through a pipeline, the number 1 draught fan is connected with a gas inlet of the secondary spray tower through a pipeline, a gas outlet of the secondary spray tower is connected with the number 3 draught fan through a pipeline, and the number 3 draught fan is connected with a gas exhaust funnel; no. 2 gas collecting channel passes through the pipeline and is connected with the air inlet of one-level spray tower, the gas vent of one-level spray tower passes through the pipeline and is connected with No. 2 draught fan, No. 2 draught fan passes through the pipeline and is connected with the air inlet of second grade spray tower. Compared with the prior art, the utility model discloses the effectual pipeline that has reduced and pack to block up, simultaneously through improving spray set, utilizes dust preliminary treatment and purification to combine together, the effectual clearance that improves the system.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a corrosive dust and waste gas treatment system.
Background
The ferric trichloride is a high-efficiency cheap flocculating agent for treating the urban sewage and the industrial wastewater, and has the obvious effects of precipitating heavy metals and sulfides, decoloring, deodorizing, deoiling, sterilizing, dephosphorizing, reducing COD and BOD in the sewage and the like.
The ferric trichloride is usually produced by a high-temperature chlorination method, waste scrap iron and chlorine are used as raw materials, and the raw materials are reacted in a reaction furnace to generate ferric trichloride steam, the generated ferric trichloride steam is discharged from the top of the reaction furnace and enters a trap to be condensed into solid crystals, and the solid crystals are obtained, namely the finished product ferric trichloride. Chlorine and hydrogen chloride overflow in the reaction process, the condensed and trapped tail gas contains a large amount of corrosive and highly toxic substances such as chlorine, iron chloride dust and the like, and the temperature of the waste gas is as high as 110 ℃, so that the selection of a material with high removal efficiency and durability is very important. At present, the iron trichloride waste gas treatment system has the problems of serious pipeline blockage, difficult cleaning, easy blockage, low removal efficiency, substandard emission and the like in the conventional spraying adsorption process.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a corrosivity dust exhaust-gas treatment system through improving the waste gas collection mode, the effectual pipe blockage that has reduced, simultaneously through improving spray set, combines together through dust preliminary treatment and exhaust purification, and the effectual jam problem of avoiding spray set has improved the clearance of system simultaneously.
In order to solve the technical problem, the utility model provides a corrosive dust and waste gas treatment system, which comprises a gas collecting hood No. 1, a gas collecting hood No. 2, a draught fan No. 1, a primary spray tower, a draught fan No. 2, a secondary spray tower, a draught fan No. 3 and an exhaust funnel;
the number 1 gas collecting hood is connected with a number 1 draught fan through a pipeline, the number 1 draught fan is connected with a gas inlet of the secondary spray tower through a pipeline, a gas outlet of the secondary spray tower is connected with the number 3 draught fan through a pipeline, and the number 3 draught fan is connected with an exhaust funnel;
no. 2 gas collecting channel pass through the pipeline and be connected with the air inlet of one-level spray tower, the gas vent of one-level spray tower passes through the pipeline and is connected with No. 2 draught fan, No. 2 draught fan pass through the pipeline and be connected with the air inlet of second grade spray tower.
Preferably, the number 1 gas collecting hood and the number 2 gas collecting hood are made of high temperature resistant materials, and further preferably made of high temperature resistant glass fiber reinforced plastic materials.
Preferably, the pipeline is made of high-temperature-resistant, corrosion-resistant and wear-resistant materials, and further preferably made of high-temperature-resistant and corrosion-resistant glass special steel materials.
Preferably, no less than 1 group of pre-spraying systems are arranged in the first-stage spraying tower.
Preferably, a packing layer and a spraying system are arranged in the secondary spraying system, and the packing layer is positioned at the upper part of the spraying system.
Further preferably, the filler layer is not less than 1 layer.
Still more preferably, the filler of the filler layer is a rotational flow plate filler.
Further preferably, the number of the spraying systems is not less than 1.
Preferably, the No. 1 induced draft fan and the No. 2 induced draft fan are connected with the secondary spray tower through a gas collecting pipe.
Further preferably, the air inlet and the air outlet of the No. 1 draught fan, the No. 2 draught fan and the No. 3 draught fan are connected with the pipeline through flexible connections.
The invention has the beneficial effects that:
(1) the invention adopts the first-stage and the second-stage spray towers which are connected in series for use, wherein the first-stage spray tower adopts an empty tower to pre-spray dust, and the second-stage spray tower adopts a spiral-flow plate packed tower to spray waste gas, so that the problem of blockage of packing in the traditional spray tower is avoided, and the treatment efficiency of dust and waste gas is effectively improved;
(2) an extracorporeal circulation system is adopted, so that the circulation quantity is increased, the temperature of waste gas is reduced, and the adsorption effect is improved;
(3) through the reasonable configuration of the draught fan, the whole dust and waste gas treatment system is in a micro-negative pressure state, so that the escape of dust and waste gas is avoided, and the environmental pollution is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The gas collecting device comprises a gas collecting hood 1, a gas collecting hood 2, an induced draft fan 3, a induced draft fan 1, a primary spray tower 4, a primary spray tower 5, a secondary spray tower 6, a secondary spray tower 7, a induced draft fan 3, an exhaust funnel 8, a pre-spray system 9, a packing layer 10, a spraying system 11, a gas collecting pipe 12, a gas collecting pipe 13, a flexible connection 14, a reaction furnace 15 and a condensation catcher.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A corrosive dust and waste gas treatment system comprises a gas collecting hood No. 1, a gas collecting hood No. 2, a draught fan No. 1, a primary spray tower 4, a draught fan No. 2, a secondary spray tower 6, a draught fan No. 3, a draft fan No. 7 and an exhaust funnel 8;
the number 1 gas collecting hood 1 is connected with a number 1 draught fan 3 through a pipeline, the number 1 draught fan 3 is connected with a gas inlet of the secondary spray tower 6 through a pipeline, a gas outlet of the secondary spray tower 6 is connected with a number 3 draught fan 7 through a pipeline, and the number 3 draught fan 7 is connected with an exhaust funnel 8;
no. 2 gas collecting channel 2 passes through the pipeline and is connected with the air inlet of one-level spray tower 4, the gas vent of one-level spray tower 4 passes through the pipeline and is connected with draught fan 5 No. 2, draught fan 5 No. 2 pass through the pipeline and be connected with the air inlet of second grade spray tower 6.
Preferably, the number 1 gas collecting hood and the number 2 gas collecting hood are made of high temperature resistant materials, and more preferably made of high temperature resistant glass fiber reinforced plastic materials.
Preferably, the pipeline is made of high-temperature-resistant, corrosion-resistant and wear-resistant materials, and further preferably made of high-temperature-resistant and corrosion-resistant glass special steel materials.
Preferably, not less than 1 group of pre-spraying systems 9 are arranged in the first-stage spraying tower 4.
Preferably, a packing layer 10 and a spraying system 11 are arranged in the secondary spray tower 6, and the packing layer 10 is positioned at the upper part of the spraying system 11.
Further preferably, the filler layer 10 is not less than 1 layer.
Still more preferably, the filler of the filler layer 10 is a rotational flow plate filler.
Further preferably, the spraying systems 11 are not less than 1 group.
Further preferably, the No. 1 induced draft fan 3 and the No. 2 induced draft fan 5 are connected with the secondary spray tower 6 through the gas collecting pipe 12.
Preferably, 1 draught fan 3 No. 2 draught fan 5 with No. 3 draught fan 7's air inlet and gas vent pass through flexible coupling 13 and pipe connection, and simultaneously, set up on the pipeline and overhaul the flange, the effectual pipeline of avoiding blocks up.
The working principle is as follows:
the overflowed waste gas generated in the production process of ferric trichloride is collected by a gas collecting hood and then enters a secondary spray tower through a pipeline under the action of a No. 1 draught fan, 2 layers of rotational flow plate fillers and 3 layers of alkali liquor spray systems are arranged in the secondary spray tower, the removal rate of chlorine and hydrogen chloride in the waste gas is improved by increasing the contact area of the waste gas and the alkali liquor and prolonging the retention time, and the purified waste gas enters an exhaust funnel to be discharged at high altitude under the action of the No. 3 draught fan;
condensing and trapping tail gas is led out from the tail end, and enters a first-stage spray tower through a gas collecting hood and a pipeline under the action of a No. 2 draught fan, a 3-layer ferrous chloride solution pre-spray system is arranged in the first-stage spray tower, the circulating amount is increased, the temperature of waste gas is reduced, most of ferric chloride dust is adsorbed, circulating liquid is replaced periodically, and generated ferric chloride liquid byproducts are collected. The condensed and trapped tail gas enters a secondary spray tower under the action of a No. 3 draught fan after being pretreated by a primary spray tower, and is absorbed and removed of residual ferric chloride dust, chlorine and hydrogen chloride through a cyclone plate filler and alkali liquor spray system, and then is discharged at high altitude through an exhaust funnel under the action of the No. 3 draught fan.
The utility model is not limited to the treatment of corrosive dust and waste gas in the production process of ferric trichloride, and is also suitable for the treatment of other dust and waste gas containing corrosive and high-temperature characteristics.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. A corrosive dust and waste gas treatment system comprises a gas collecting hood No. 1, a gas collecting hood No. 2, an induced draft fan No. 1, a primary spray tower, an induced draft fan No. 2, a secondary spray tower, an induced draft fan No. 3 and an exhaust funnel, and is characterized in that the gas collecting hood No. 1 is connected with the induced draft fan No. 1 through a pipeline, the induced draft fan No. 1 is connected with an air inlet of the secondary spray tower through a pipeline, an exhaust port of the secondary spray tower is connected with the induced draft fan No. 3 through a pipeline, and the induced draft fan No. 3 is connected with the exhaust funnel;
no. 2 gas collecting channel pass through the pipeline with the air inlet of one-level spray tower is connected, the gas vent of one-level spray tower pass through the pipeline with No. 2 draught fan connect, No. 2 draught fan pass through the pipeline with the air inlet of second grade spray tower connect.
2. The corrosive dust exhaust treatment system of claim 1, wherein said number 1 gas collecting channel and said number 2 gas collecting channel are made of high temperature resistant material.
3. The corrosive dust exhaust treatment system of claim 2, wherein said pipe is made of a high temperature, corrosion and abrasion resistant material.
4. The corrosive dust exhaust gas treatment system of claim 3, wherein not less than 1 group of pre-spray systems is provided in said primary spray tower.
5. The corrosive dust and exhaust gas treatment system according to claim 4, wherein a filler layer and a spraying system are arranged in the secondary spraying system, and the filler layer is positioned at the upper part of the spraying system.
6. The corrosive dust exhaust treatment system of claim 5, wherein said filler layer is no less than 1 layer.
7. The corrosive dust exhaust treatment system of claim 6, wherein said packing material layer is a swirl plate packing.
8. The corrosive dust exhaust treatment system of claim 5, wherein said spray system is not less than 1 group.
9. The corrosive dust exhaust gas treatment system of any one of claims 1 to 8, wherein said induced draft fan # 1 and said induced draft fan # 2 are connected to a secondary spray tower through a header.
10. The corrosive dust and exhaust gas treatment system of claim 9, wherein the air inlets and the air outlets of the induced draft fan No. 1 and the induced draft fan No. 2 are connected with the pipeline through flexible connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822220959.2U CN210021694U (en) | 2018-12-27 | 2018-12-27 | Corrosive dust and waste gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822220959.2U CN210021694U (en) | 2018-12-27 | 2018-12-27 | Corrosive dust and waste gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210021694U true CN210021694U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822220959.2U Active CN210021694U (en) | 2018-12-27 | 2018-12-27 | Corrosive dust and waste gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210021694U (en) |
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2018
- 2018-12-27 CN CN201822220959.2U patent/CN210021694U/en active Active
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