CN212119554U - Chlorine gas absorbing device for chlor-alkali plant - Google Patents
Chlorine gas absorbing device for chlor-alkali plant Download PDFInfo
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- CN212119554U CN212119554U CN202020484004.2U CN202020484004U CN212119554U CN 212119554 U CN212119554 U CN 212119554U CN 202020484004 U CN202020484004 U CN 202020484004U CN 212119554 U CN212119554 U CN 212119554U
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Abstract
The utility model relates to a chlorine absorbing device of chlor-alkali factory, the lye tank connects accident tower device, chlorine advances the pipe under the accident tower device, the evacuation pipe of accident tower top tape draught fan, accident tower device includes one-level accident tower and second grade accident tower, the lye tank connects second grade accident tower upper portion through putting alkali automatic valve, second grade accident tower bottom connects second grade sodium jar, second grade sodium jar divides two the tunnel through the second grade circulating pump, connect second grade accident tower upper portion through the second grade return valve all the way, another way connects first grade sodium jar through the one-level circulating valve, one-level accident tower lower part connects chlorine and advances the pipe, one-level accident tower bottom connects first grade sodium jar, one-level sodium jar connects one-level accident tower upper portion through the one-level circulating pump, one-level accident tower top connects second grade accident tower lower part, the evacuation pipe of draught fan is taken at second grade accident tower top, the evacuation outside of pipes mouth sets up in putting the interlocking chlorine alarm instrument of alkali automatic valve. The device has a simple structure, can effectively absorb and recycle the chlorine, prevents the harmful gas emission of the chlorine, and gives consideration to the utilization rate of the chlorine and the emission safety alarm.
Description
Technical Field
The utility model relates to a chlorine absorbing device, in particular to a chlorine absorbing device in a chlor-alkali plant.
Background
At present, the chemical plants in China generally produce caustic soda by electrolyzing salt. The by-products chlorine and hydrogen must be balanced, and therefore chlorine production plants are provided, producing for example: sodium hypochlorite, hydrochloric acid, aluminum chloride, polyvinyl chloride, chlorobenzene and other products with chlorine as raw materials. Therefore, the detection and control of chlorine are very important, especially the control of chlorine in tail gas emission after regeneration.
Disclosure of Invention
The utility model provides a simple structure can effective absorption recycle chlorine, prevents that chlorine harmful gas from discharging, compromises chlorine utilization ratio and discharges the chlorine absorption device of chlor-alkali factory of safe alarm.
The utility model adopts the technical proposal that: the utility model provides a chlorine absorbing device of chlor-alkali plant, includes lye tank, accident tower, draught fan, evacuation pipe, and the lye tank connects accident tower device, and accident tower device connects down chlorine and advances the pipe, and accident tower top connects the evacuation pipe of taking the draught fan, characterized by: the accident tower device comprises a first-level accident tower and a second-level accident tower, an alkali liquor tank is connected with the upper part of the second-level accident tower through an alkali discharge automatic valve, the bottom of the second-level accident tower is connected with a second-level sodium tank, the second-level sodium tank is divided into two paths through a second-level circulating pump, one path of the alkali liquor tank is connected with the upper part of the second-level accident tower through a second-level return valve, the other path of the alkali liquor tank is connected with a first-level sodium tank through a first-level circulating valve, the lower part of the first-level accident tower is connected with chlorine gas inlet pipe, the bottom of the first-level accident tower is connected with a first-level sodium tank, the first-level sodium tank is connected with the upper part of the first-level accident tower through a first.
Further, the lye tank is an elevated tank.
Further, the alkali discharge automatic valve is connected with a chlorine alarm in a grading linkage manner.
Furthermore, one path of the second-stage circulating pump passes through a second-stage return valve and then is connected with the upper part of the second-stage accident tower through an online ORP, and the online ORP is connected with the alkali discharge automatic valve through a controller.
Further, the first-stage circulating pump is connected with the upper part of the first-stage accident tower through an online ORP, and the online ORP is connected with the alkali discharge automatic valve through a controller.
Further, the bottom of the secondary accident tower is connected with a secondary circulating pump through a secondary straight-through valve.
Further, the secondary sodium tank is connected with a secondary circulating pump through a secondary sodium discharge valve.
Further, the bottom of the first-stage accident tower is connected with a first-stage circulating pump through a first-stage straight-through valve.
Alkali liquor is put into a secondary accident tower through an overhead tank and an alkali discharge automatic valve, the alkali liquor is pumped to the upper part of the primary accident tower through a secondary straight-through valve and a secondary circulating pump, a primary circulating valve, a primary sodium tank and a primary circulating pump, and is in countercurrent contact with a chlorine inlet pipe at the lower part of the primary accident tower to absorb chlorine, gas absorbed for the first time is sent to the lower part of the secondary accident tower through the top part of the primary accident tower and is in countercurrent absorption with the alkali liquor sent by the alkali discharge automatic valve, and finally tail gas is discharged through a draught fan and an emptying pipe; the concentration of free alkali is detected through online ORP by a primary circulating pump and a secondary circulating pump, the control of the chlorine absorption efficiency of alkali liquor is favorably improved, the absorption condition is monitored in circulation, the primary sodium tank and the secondary sodium tank continuously send the mixed alkali liquor and sodium hypochlorite back to an accident tower for absorption, and finally, the chlorine absorption product is effectively collected in the secondary sodium tank; the chlorine alarm instrument at the outer opening of the emptying pipe detects the chlorine content of the discharged tail gas in real time, controls the grading opening of the automatic alkali discharge valve and is beneficial to real-time alarm and monitoring of chlorine absorption.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises an alkali liquor elevated tank 1, an alkali discharge automatic valve 2, a secondary accident tower 3, a secondary sodium tank 4, a secondary sodium straight-through valve 5, a secondary straight-through valve 6, a secondary circulating pump 7, a secondary return valve 8, a primary circulating valve 9, a primary accident tower 10, a primary sodium tank 11, a primary sodium straight-through valve 12, a primary straight-through valve 13, a primary circulating pump 14, an online ORP15, a chlorine inlet pipe 16, an induced draft fan 17, an emptying pipe 18 and a chlorine alarm 19.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and examples.
FIG. 1 shows: a chlorine gas absorption unit of a chlor-alkali plant comprising: the device comprises an alkali liquor elevated tank 1, an alkali discharge automatic valve 2, a secondary accident tower 3, a secondary sodium tank 4, a secondary sodium straight-through valve 5, a secondary straight-through valve 6, a secondary circulating pump 7, a secondary return valve 8, a primary circulating valve 9, a primary accident tower 10, a primary sodium tank 11, a primary sodium straight-through valve 12, a primary straight-through valve 13, a primary circulating pump 14, an online ORP15, a chlorine inlet pipe 16, an induced draft fan 17, an emptying pipe 18 and a chlorine alarm 19.
An alkali liquor elevated tank 1 is connected above a secondary accident tower 3 through an alkali discharge automatic valve 2, the bottom of the secondary accident tower is divided into two paths, one path is connected with a secondary sodium tank 4, the secondary sodium tank 4 is connected with a secondary circulating pump 7 through a secondary sodium straight-through valve 5, the other path is connected with a secondary circulating pump 7 through a secondary straight-through valve 6, the back of the secondary circulating pump 7 is divided into two paths, one path is connected with the upper part of the secondary accident tower 3 through a secondary return valve 8, the other path is connected with a primary sodium tank 11 through a primary circulating valve 9, the primary sodium tank 11 is connected with a primary circulating pump 14 through a primary sodium straight-through valve 12, the bottom of the primary accident tower 10 is divided into two paths, one path is connected with a primary sodium tank 11, the other path is connected with a primary circulating pump 14 through a primary straight-through valve 13, the primary circulating pump 14 is connected with the upper part of the primary accident tower 10 through an online ORP15, the lower part of the primary accident tower, the outer opening of the emptying pipe 18 is provided with a chlorine alarm instrument 19, the online ORP15 and the alkali discharging automatic valve 2 are all connected with a controller, and the alkali discharging automatic valve 2 is of a multi-stage opening structure and is interlocked with the chlorine alarm instrument.
Claims (8)
1. The utility model provides a chlorine absorbing device of chlor-alkali plant, includes lye tank, accident tower, draught fan, evacuation pipe, and the lye tank connects accident tower device, and accident tower device connects down chlorine and advances the pipe, and accident tower top connects the evacuation pipe of taking the draught fan, characterized by: the accident tower device comprises a first-level accident tower and a second-level accident tower, an alkali liquor tank is connected with the upper part of the second-level accident tower through an alkali discharge automatic valve, the bottom of the second-level accident tower is connected with a second-level sodium tank, the second-level sodium tank is divided into two paths through a second-level circulating pump, one path of the alkali liquor tank is connected with the upper part of the second-level accident tower through a second-level return valve, the other path of the alkali liquor tank is connected with a first-level sodium tank through a first-level circulating valve, the lower part of the first-level accident tower is connected with chlorine gas inlet pipe, the bottom of the first-level accident tower is connected with a first-level sodium tank, the first-level sodium tank is connected with the upper part of the first-level accident tower through a first.
2. The chlorine gas absorption plant of claim 1, characterized in that: the lye tank is an elevated tank.
3. The chlorine gas absorption plant of claim 1, characterized in that: the alkali discharge automatic valve is connected with a chlorine alarm in a grading linkage manner.
4. The chlorine gas absorption plant of claim 1, characterized in that: one path of the second-stage circulating pump is connected with the upper part of the second-stage accident tower through an online ORP (oxidation-reduction potential) after passing through a second-stage return valve, and the online ORP is connected with an alkali discharge automatic valve through a controller.
5. The chlorine gas absorption plant of claim 1, characterized in that: the first-stage circulating pump is connected with the upper part of the first-stage accident tower through an online ORP, and the online ORP is connected with the alkali discharge automatic valve through a controller.
6. The chlorine gas absorption plant of claim 1, characterized in that: and the bottom of the secondary accident tower is connected with a secondary circulating pump through a secondary straight-through valve.
7. The chlorine gas absorption plant of claim 1, characterized in that: the bottom of the first-stage accident tower is connected with a first-stage circulating pump through a first-stage straight-through valve.
8. The chlorine gas absorption plant of claim 1, characterized in that: the secondary sodium tank is connected with a secondary circulating pump through a secondary sodium discharge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020484004.2U CN212119554U (en) | 2020-04-07 | 2020-04-07 | Chlorine gas absorbing device for chlor-alkali plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020484004.2U CN212119554U (en) | 2020-04-07 | 2020-04-07 | Chlorine gas absorbing device for chlor-alkali plant |
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| CN212119554U true CN212119554U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020484004.2U Active CN212119554U (en) | 2020-04-07 | 2020-04-07 | Chlorine gas absorbing device for chlor-alkali plant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999849A (en) * | 2021-02-26 | 2021-06-22 | 南通星球石墨股份有限公司 | Processing device for chlorine leakage accident |
| CN113680191A (en) * | 2021-08-06 | 2021-11-23 | 陕西北元化工集团股份有限公司 | Waste chlorine absorption process |
| CN115957713A (en) * | 2022-12-20 | 2023-04-14 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
-
2020
- 2020-04-07 CN CN202020484004.2U patent/CN212119554U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999849A (en) * | 2021-02-26 | 2021-06-22 | 南通星球石墨股份有限公司 | Processing device for chlorine leakage accident |
| CN113680191A (en) * | 2021-08-06 | 2021-11-23 | 陕西北元化工集团股份有限公司 | Waste chlorine absorption process |
| CN115957713A (en) * | 2022-12-20 | 2023-04-14 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
| CN115957713B (en) * | 2022-12-20 | 2023-12-01 | 江苏奥喜埃化工有限公司 | Sodium hypochlorite production system of protection production line |
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