CN216237307U - Nitrogen trichloride removing explosion-proof device for electrolytic production - Google Patents
Nitrogen trichloride removing explosion-proof device for electrolytic production Download PDFInfo
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- CN216237307U CN216237307U CN202122222346.4U CN202122222346U CN216237307U CN 216237307 U CN216237307 U CN 216237307U CN 202122222346 U CN202122222346 U CN 202122222346U CN 216237307 U CN216237307 U CN 216237307U
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Abstract
The utility model provides a nitrogen trichloride removing explosion-proof device for electrolytic production, which comprises a chlorine water washing tower, wherein the lower part of the chlorine water washing tower is connected with a liquid outlet pipe, the other end of the liquid outlet pipe is connected with a chlorine water storage tank, the chlorine water storage tank is connected with a liquid return pipe, the liquid return pipe penetrates into the chlorine water washing tower from the upper part of the chlorine water washing tower, and the top end of the chlorine water washing tower is connected with a liquid return pipeThe chlorine gas cooler is connected with the water mist separator, the water mist separator is connected with a first infusion tube, and the first infusion tube is connected with the chlorine water storage tank. The utility model inputs chlorine into a chlorine water washing tower, uses the chlorine of the chlorine water to carry out circular washing, and carries out NC1 in the chlorine3The chlorine water reacts with HC1, HClO and the like in the chlorine water to be decomposed, ammonium ions in the chlorine gas are removed, the generation of nitrogen trichloride is effectively prevented, and the potential safety hazard is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of electrolysis, and relates to a nitrogen trichloride removing explosion-proof device for electrolytic production.
Background
Nitrogen trichloride, also known as trichloroamine, an inorganic compound, of the formula NCl3, has a molecular weight of 120.37. It is yellow, oily, volatile toxic liquid with pungent odor, boiling point 71 deg.C, and is extremely unstable.
The basic principle of producing caustic soda by an electrolytic method is as follows: under the action of DC current, the salt solution has the negative ions oxidized on the anode and the positive ions reduced on the cathode. The former is called the anodic process and the latter is called the cathodic process. The main reaction of the anodic process is the oxidation of chloride ionsBecoming chlorine gas: 2Cl- → Cl2+2e-, when HClO exists in chlorine gas and the medium is acidic (pH ≈ 4), as long as the salt water entering the tank contains ammonium ions or organic nitrogen compounds, nitrogen trichloride (except for graphite electrolytic tank) will be generated and enter the production system along with the chlorine gas, which brings great hidden trouble to safety production, so the ammonium ions in the chlorine gas need to be removed to prevent the generation of nitrogen trichloride.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a nitrogen trichloride removing explosion-proof device for electrolytic production aiming at the problems in the prior art.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a remove nitrogen trichloride explosion-proof equipment for electrolysis production, includes chlorine water scrubbing tower, the sub-unit connection of chlorine water scrubbing tower has the drain pipe, the other end of drain pipe is connected with chlorine water storage tank, chlorine water storage tank is connected with back the liquid pipe, it penetrates in the chlorine water scrubbing tower from the upper portion of chlorine water scrubbing tower to return the liquid pipe, the one end that returns the liquid pipe to be located chlorine water scrubbing tower is connected with the shower nozzle, the top of chlorine water scrubbing tower is connected with the gas-supply pipe, the gas-supply pipe is connected with the chlorine cooler, the chlorine cooler is connected with the water smoke separator, the water smoke separator is connected with first transfer line, first transfer line is connected with chlorine water storage tank. Furthermore, a liquid return pump and a chlorine water cooler for cooling the chlorine water are arranged on the liquid return pipe.
Further, the chlorine water cooler comprises a cooling tank, and a cold water pipe is coiled in the cooling tank.
Further, the chlorine water storage tank is connected with a first gas transmission branch pipe, and the first gas transmission branch pipe is connected with a gas transmission pipe.
Furthermore, a second liquid conveying pipe is connected to the liquid return pipe, the second liquid conveying pipe is connected to a dechlorination tower, a second gas conveying branch pipe is connected to the top of the dechlorination tower, and the second gas conveying branch pipe is connected with a gas conveying pipe.
Further, the bottom end of the dechlorination tower is connected with a liquid discharge pipe.
Further, a chlorine water preheater for heating chlorine water is arranged on the second liquid conveying pipe.
Further, the chlorine water preheater comprises a preheating box, and a hot air pipe is coiled in the preheating box.
Further, the chlorine gas cooler is a titanium tube cooler.
The utility model has the beneficial effects that: introducing chlorine gas into chlorine water washing tower, circularly washing with chlorine gas of chlorine water, and washing NC1 in chlorine gas3The chlorine water reacts with HC1, HClO and the like in the chlorine water to be decomposed, so that ammonium ions in the chlorine gas are removed, the generation of nitrogen trichloride is effectively prevented, and the potential safety hazard is greatly reduced; through dechlorination tower and chlorine cooler, separate the chlorine in the chlorine water, reduced the loss of chlorine and the consumption of chlorine water, effectively reduced the cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1-chlorine water washing tower, 2-liquid outlet pipe, 3-chlorine water storage tank, 4-liquid return pipe, 5-spray head, 6-liquid return pump, 7-chlorine water cooler, 701-cooling tank, 702-cold water pipe, 8-gas conveying pipe, 9-chlorine gas cooler, 10-first liquid conveying pipe, 11-first gas conveying branch pipe, 12-second liquid conveying pipe, 13-dechlorination tower, 14-second gas conveying branch pipe, 15-chlorine water preheater, 151-preheating tank, 152-hot gas pipe, 16-liquid discharge pipe and 17-water mist separator.
Detailed Description
The present invention will be described in detail with reference to the following embodiments:
as shown in fig. 1, an explosion-proof apparatus for removing nitrogen trichloride for electrolytic production comprises a chlorine water washing tower 1, the chlorine water washing tower 1 can wash chlorine gas input into the chlorine water washing tower 1, the chlorine water washing tower 1 uses chlorine water to wash chlorine gas input into the chlorine water washing tower 1, a liquid outlet pipe 2 is connected to the lower part of the chlorine water washing tower 1, the other end of the liquid outlet pipe 2 is connected with a chlorine water storage tank 3, the chlorine water storage tank 3 is connected with a liquid return pipe 4, the liquid return pipe 4 penetrates into the chlorine water washing tower 1 from the upper part of the chlorine water washing tower 1, one end of the liquid return pipe 4 located in the chlorine water washing tower 1 is connected with a spray head 5, the liquid return pipe 4 is provided with a liquid return pump 6 and a chlorine water cooler 7 for cooling chlorine water, specifically, the chlorine water cooler 7 comprises a cooling tank 701, a cooling water pipe 702 is coiled in the cooling tank 701, when chlorine water is input into the cooling tank 701, the chlorine water in the cooling tank 701 can be cooled by inputting cold water into the cooling water pipe 702, the top end of the chlorine water washing tower 1 is connected with a gas pipe 8, the gas pipe 8 is connected with a chlorine gas cooler 9, the chlorine gas cooler 9 is a conventional titanium pipe cooler, the chlorine gas cooler 9 is connected with a water mist separator 17, the water mist separator 17 is connected with a first liquid conveying pipe 10, the first liquid conveying pipe 10 is connected with a chlorine water storage tank 3, the water mist separator 17 can discharge the moisture in the chlorine gas and convey the chlorine gas to a corresponding pipeline for use, then the discharged water is conveyed to a chlorine water storage tank 3, the chlorine in the gas conveying pipe 8 can be cooled to become liquid through a chlorine cooler 9, then the chlorine gas is conveyed back into the chlorine water storage tank 3 through the first liquid conveying pipe 10, the top of the chlorine water storage tank 3 is connected with a first gas conveying branch pipe 11, the first gas conveying branch pipe 11 is connected with a gas conveying pipe 8, and the first gas conveying branch pipe 11 can convey part of the chlorine gas in the chlorine water storage tank 3 into the gas conveying pipe 8 to prevent the chlorine gas from gathering in the chlorine water storage tank 3.
The liquid return pipe 4 is connected with a second liquid conveying pipe 12, the second liquid conveying pipe 12 is connected with a dechlorination tower 13, the dechlorination tower 13 adopts an existing conventional dechlorination tower, the top of the dechlorination tower 13 is connected with a second gas conveying branch pipe 14, the second gas conveying branch pipe 14 is connected with a gas conveying pipe 8, in addition, a chlorine water preheater 15 for heating chlorine water is arranged on the second liquid conveying pipe 12, specifically, the chlorine water preheater 15 comprises a preheating box 151, a hot gas pipe 152 is wound in the preheating box 151 and can be used for inputting steam into the hot gas pipe 152 to heat chlorine water in the preheating box 151 and gasify chlorine water in the preheating box 151, in addition, the bottom end of the dechlorination tower 14 is connected with a liquid discharge pipe 16, and the liquid discharge pipe 16 can discharge dechlorinated liquid to a desalting tank for subsequent treatment.
The use mode of the utility model is as follows:
firstly, chlorine water is put into a chlorine water storage tank 3, wet chlorine gas with the temperature of 85 ℃ generated in an electrolysis process is input into a chlorine water washing tower 1, then a liquid return pump 6 is started, the chlorine water in the chlorine water storage tank 3 is input into the chlorine water washing tower 1 and sprayed through a spray head 5, at the moment, the chlorine water is in countercurrent contact with the chlorine gas to wash and cool the chlorine gas, so that the temperature of the chlorine gas is reduced to 40-45 ℃, about 85-90% of moisture in the chlorine gas is separated out through condensation, meanwhile, through the process, nitrogen trichloride in the chlorine gas is decomposed through reactions of HCl, HClO and the like in the chlorine water, the effect of removing the nitrogen trichloride is achieved, the washed chlorine water is conveyed back into the chlorine water storage tank 3 through a liquid outlet pipe 2 for recycling, a chlorine water cooler 7 on a liquid return pipe 4 in the recycling process can cool the chlorine water, the washed chlorine gas is input into a chlorine gas cooler 9 through a gas conveying pipe 8 at the top of the chlorine water washing tower 1, and after cooling, the chlorine gas is conveyed into a water mist separator 17, the moisture in the chlorine gas is discharged, the chlorine gas is conveyed into a corresponding pipeline for use, and then the discharged moisture is conveyed to a chlorine water storage tank 3 through a first liquid conveying pipe 10 for nickel recycling.
Part of chlorine water in the chlorine water storage tank 3 enters the dechlorination tower 13 through the first gas transmission branch pipe 11, in the process, the chlorine water enters the preheating tank 151 of the chlorine water preheater 15, the chlorine water in the preheating tank 151 is heated through the hot gas pipe to reach the temperature of 87-89 ℃, so that chlorine gas in the chlorine water entering the dechlorination tower 13 is separated, the separated chlorine gas is input to the chlorine gas cooler 9 through the second gas transmission branch pipe 14 at the top of the preheating tank 151, and is then conveyed into the water mist separator 17 after being cooled, the moisture in the chlorine gas is discharged, and finally, waste liquid discharged from the dechlorination tower 13 is discharged to a salinization pool through the liquid discharge pipe 16 for subsequent treatment.
Claims (9)
1. A nitrogen trichloride removing explosion-proof device for electrolytic production is characterized by comprising a chlorine water washing tower (1), the lower part of the chlorine water washing tower (1) is connected with a liquid outlet pipe (2), the other end of the liquid outlet pipe (2) is connected with a chlorine water storage tank (3), the chlorine water storage tank (3) is connected with a liquid return pipe (4), the liquid return pipe (4) penetrates into the chlorine water washing tower (1) from the upper part of the chlorine water washing tower (1), one end of the liquid return pipe (4) positioned in the chlorine water washing tower (1) is connected with a spray head (5), the top end of the chlorine water washing tower (1) is connected with a gas pipe (8), the gas pipe (8) is connected with a chlorine gas cooler (9), the chlorine cooler (9) is connected with a water mist separator (17), the water mist separator (17) is connected with a first infusion tube (10), and the first infusion tube (10) is connected with the chlorine water storage tank (3).
2. The nitrogen trichloride removing explosion-proof device for electrolytic production according to claim 1, wherein a liquid return pump (6) and a chlorine water cooler (7) for cooling chlorine water are arranged on the liquid return pipe (4).
3. The nitrogen trichloride-removing explosion-proof device for electrolytic production according to claim 2, wherein the chlorine water cooler (7) comprises a cooling tank (701), and a cold water pipe (702) is coiled in the cooling tank (701).
4. The nitrogen trichloride removing explosion-proof device for electrolytic production as claimed in claim 1, wherein the chlorine water storage tank (3) is connected with a first gas transmission branch pipe (11), and the first gas transmission branch pipe (11) is connected with a gas transmission pipe (8).
5. The nitrogen trichloride removing explosion-proof device for electrolytic production as claimed in claim 1, wherein a second liquid conveying pipe (12) is connected to the liquid return pipe (4), the second liquid conveying pipe (12) is connected to a dechlorination tower (13), a second gas conveying branch pipe (14) is connected to the top of the dechlorination tower (13), and the second gas conveying branch pipe (14) is connected to the gas conveying pipe (8).
6. The nitrogen trichloride-removing explosion-proof device for electrolytic production according to claim 5, wherein a drain pipe (16) is connected to the bottom end of the dechlorination tower (13).
7. The nitrogen trichloride removing explosion-proof device for electrolytic production according to claim 5, wherein a chlorine water preheater (15) for heating chlorine water is provided on the second liquid transport pipe (12).
8. The nitrogen trichloride-removing explosion-proof device for electrolytic production according to claim 7, wherein the chlorine water preheater (15) includes a preheating tank (151), and a hot gas pipe (152) is coiled in the preheating tank (151).
9. The nitrogen trichloride-removing explosion-proof device for electrolytic production according to claim 1, wherein the chlorine gas cooler (9) is a titanium tube cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122222346.4U CN216237307U (en) | 2021-09-14 | 2021-09-14 | Nitrogen trichloride removing explosion-proof device for electrolytic production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122222346.4U CN216237307U (en) | 2021-09-14 | 2021-09-14 | Nitrogen trichloride removing explosion-proof device for electrolytic production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216237307U true CN216237307U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122222346.4U Active CN216237307U (en) | 2021-09-14 | 2021-09-14 | Nitrogen trichloride removing explosion-proof device for electrolytic production |
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| Country | Link |
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| CN (1) | CN216237307U (en) |
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2021
- 2021-09-14 CN CN202122222346.4U patent/CN216237307U/en active Active
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