CN205199281U - Dangerous device of nitrogen trichloride in production of reduction chlor -alkali - Google Patents
Dangerous device of nitrogen trichloride in production of reduction chlor -alkali Download PDFInfo
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- CN205199281U CN205199281U CN201520938663.8U CN201520938663U CN205199281U CN 205199281 U CN205199281 U CN 205199281U CN 201520938663 U CN201520938663 U CN 201520938663U CN 205199281 U CN205199281 U CN 205199281U
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- ncl
- chlor
- pipeline
- alkali
- outlet
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Abstract
The utility model discloses a dangerous device of nitrogen trichloride in production of reduction chlor -alkali, the device includes collecting vat and neutralizing tank, the well upper portion of collecting vat is equipped with the NCl3 entry of being connected with the NCl3 delivery pipe, the collecting vat top is equipped with the gas vent, the collecting vat bottom is equipped with the NCl3 export, NCl3 export links to each other with the NCl3 import that sets up on neutralizing tank upper portion through the pipeline, neutralizing tank upper portion still is equipped with the industry water inlet, exhaust outlet and naOH import, the neutralizing tank bottom is equipped with the neutralizer export, neutralizer export through the pipeline in with and the liquid pump be connected, in pass through pipeline and the internal connection of chlor -alkali system with the liquid pump. The utility model discloses easily accumulate in liquid chlorine based on NCl3, and the principle of decomposing in acidity or alkaline medium, the system removes the NCl3 in the absorption liquid chlorine from the absorption liquid that the naOH of producing configured the finite concentration into with the chlor -alkali, and the neutralizer after absorbing simultaneously is sent to the inside thinking that continues to absorb useless chlorine of chlor -alkali system to reach the mesh that reduces the dangerous and resourceization of NCl3 in the chlor -alkali production.
Description
Technical field
The utility model belongs to technical field of chlor-alkali production, is specifically related to a kind of device reducing danger of nitrogen trichloride in chlor-alkali production.
Background technology
In chlorine industry production process, NCl
3be produce under the anode-context of electrolysis saturated brine, cannot definitely avoid, rational measure can only be taked to reduce content, make it control in the indication range allowed.
NCl
3easily being accumulated in the bottom of liquid chloro container and extremely unstable, is the objectionable impurities in liquid chlorine, shaking a little, illumination or the concentration in liquid chlorine more than 5% time will blasting property decompose, threaten the safety in production of chlorine industry.Under constancy of volume condition, NCl
3blast can reach the high temperature of 2128 DEG C and the high pressure of 536.1MPa, and brisance is very fearful, and consequence is very serious.Domestic chlor-alkali production enterprise once repeatedly occurred because of NCl
3deal with improperly and the security incident that causes, bring huge loss to the country and people's lives and properties, also bring a series of problem of environmental pollution simultaneously, therefore reduce NCl rationally and effectively
3danger be that chlorine industry produces the difficult problem faced.Domesticly at present generally adopt chlorine water washing method, namely by the hypochlorous acid in chlorine water and salt acid elution from a large amount of chlorine of electrolysis system, reduce NCl to reach
3the object of content, this method equipment is huge, and reaction rate is low, and chlorine water spray flux is large, process NCl
3efficiency low.
Utility model content
The purpose of this utility model is to solve the technical problem existed in prior art, provides that a kind of structure is simple, equipment investment is few, long service life, can effectively reduce NCl in liquid chlorine
3, the device of danger of nitrogen trichloride in reduction chlor-alkali production safe and reliable to operation.
In order to achieve the above object, the utility model by the following technical solutions: a kind of device reducing danger of nitrogen trichloride in chlor-alkali production, comprises feeder and neutralizing tank, and the middle and upper part of described feeder is provided with and NCl
3the NCl that delivery pipe connects
3entrance, described feeder top is provided with exhaust outlet, is provided with NCl bottom described feeder
3outlet, described NCl
3export by pipeline and the NCl being arranged on neutralizing tank top
3import is connected, described neutralizing tank top is also provided with industry water import, waste gas outlet and NaOH import, be provided with neutralizer outlet bottom described neutralizing tank, the outlet of described neutralizer by pipeline with in be connected with liquid pump, be connected with chlor-alkali internal system by pipeline with liquid pump in described.
Further, described NCl
3delivery pipe and N
2scavenging conduit is communicated with, described NCl
3delivery pipe is provided with NCl
3drain valve, described N
2scavenging conduit is provided with N
2blow down valve.
Further, described feeder top is provided with liquid level gauge and Pressure gauge.
Further, described feeder comprises upper cover, cylindrical shell and flanging taper low head, and described upper cover and cylindrical shell are by Flange joint, and described flanging taper low head and barrel soldering, described cylindrical shell top is provided with NCl
3entrance, described upper cover is provided with feeder liquid level gauge and Pressure gauge, and described upper cover top is provided with exhaust outlet, is provided with NCl bottom described flanging taper low head
3outlet.
Further, described NCl
3the NCl on outlet and neutralizing tank top
3the pipeline that import is connected is provided with sample tap, and described sample tap place is provided with sample valve, described NCl
3outlet is provided with NCl
3control valve.
Further, the pipeline be connected with exhaust outlet is provided with air bleeding valve.
Further, described neutralizing tank side lower part is provided with liquid level gauge.
Further, the pipeline be connected with industry water import is provided with industry water and adds valve, and the pipeline be connected with NaOH import is provided with NaOH and adds valve.
Further, the outlet of described neutralizer with in the pipeline that is connected with liquid pump be provided with neutralizer pump intake valve, the pipeline be connected with chlor-alkali internal system with liquid pump in described is provided with neutralizer control valve.
The utility model hinge structure has following beneficial effect: the utility model is based on NCl
3easily be accumulated in liquid chlorine, and the principle of decomposing in acidity or alkaline medium, be configured to the NCl in certain density absorbing liquid and liquid chlorine with the NaOH that chlor-alkali system is self-produced
3reaction, the neutralizer after simultaneously stability is sent to the thinking that chlor-alkali internal system continues to absorb waste chlorine, reduces NCl to reach in chlor-alkali production
3the object of danger and resource.The utility model occupation area of equipment is little, structure is simple, equipment investment is little, long service life; Technological process is short, and control point is less, and method of work is easy and simple to handle, and security of operation is stablized, and neutralizer can utilize again, effectively can process the NCl in liquid chlorine
3, the safe and stable operation for chlor-alkali system provides strong guarantee.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model feeder.
The utility model Reference numeral implication is as follows: 1, N
2blow down valve; 2, NCl
3drain valve; 3, air bleeding valve; 4, feeder liquid level gauge; 5, Pressure gauge; 6, feeder; 7, NCl
3control valve; 8, sample valve; 9, sample tap; 10, neutralizing tank liquid level gauge; 11, industry water adds valve; 12, NaOH adds valve; 13, neutralizing tank; 14, neutralizer pump intake valve; 15, in and liquid pump; 16, neutralizer control valve; 17, NCl
3delivery pipe; 18, NCl
3entrance; 19, exhaust outlet; 20, NCl
3outlet; 21, NCl
3import; 22, industry water import; 23, waste gas outlet; 24, NaOH import; 25, neutralizer outlet; 26, N
2scavenging conduit; 27, upper cover; 28, cylindrical shell; 29, flanging taper low head; 30, flange.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1-2, a kind of device reducing danger of nitrogen trichloride in chlor-alkali production, comprise feeder 6 and neutralizing tank 13 that material selects 16MnDR and FRP/PVC-U respectively, feeder 6 comprises the flanging taper low head 29 that upper cover 27, cylindrical shell 28 and tapering are 60 degree, upper cover 27 is connected by flange 30 with cylindrical shell 28, flanging taper low head 29 welds with cylindrical shell 28, and cylindrical shell 28 top of feeder 6 is provided with and NCl
3the NCl that delivery pipe 17 connects
3entrance 18, NCl
3delivery pipe 17 and N
2scavenging conduit 26 is communicated with, NCl
3delivery pipe 17 is provided with NCl
3drain valve 2, N
2scavenging conduit 26 is provided with N
2blow down valve 1, the upper cover 27 of feeder 6 is provided with feeder liquid level gauge 4 and Pressure gauge 5, and upper cover 27 top of feeder 6 is provided with exhaust outlet 19, and the pipeline be connected with exhaust outlet 19 is provided with air bleeding valve 3, is provided with NCl bottom the flanging taper low head 29 of feeder 6
3outlet 20, NCl
3outlet 20 is by pipeline and the NCl being arranged on neutralizing tank 13 top
3import 21 is connected, NCl
3export 20 absolute altitudes higher than NCl
3import 21 absolute altitude at least 500mm, NCl
3outlet 20 and NCl
3the pipeline that import 21 is connected is provided with sample tap 9, and sample tap 9 place is provided with sample valve 8, NCl
3export 20 places and be provided with NCl
3control valve 7, neutralizing tank 13 top is also provided with industry water import 22, waste gas outlet 23 and NaOH import 24, the pipeline be connected with industry water import 22 is provided with industry water and adds valve 11, the pipeline be connected with NaOH import 24 is provided with NaOH and adds valve 12, neutralizing tank 13 side lower part is provided with neutralizing tank liquid level gauge 10, neutralizer outlet 25 is provided with bottom neutralizing tank 13, neutralizer outlet 25 by pipeline with in be connected with liquid pump 15, in be connected with chlor-alkali internal system by pipeline with liquid pump 15, neutralizer outlet 25 with in the pipeline that is connected with liquid pump 15 be provided with neutralizer pump intake valve 14, in be provided with neutralizer control valve 16 with the pipeline that liquid pump 15 is connected with chlor-alkali internal system.
Use during the device of danger of nitrogen trichloride in reduction chlor-alkali production of the present utility model and comprise the following steps:
A, NCl
3discharge: open NCl
3drain valve 2, according to the instruction of Pressure gauge 5 and feeder liquid level gauge 4, by NCl
3nCl is passed through with the mixed liquor of liquid chlorine
3delivery pipe 17 is disposed in feeder 6, opens the air bleeding valve 3 at feeder 6 top while discharge, closes NCl after mixed liquor discharge
3drain valve 2, opens N
2n on scavenging conduit 26
2blow down valve 1, to NCl
3nCl remaining in delivery pipe 17
3purge;
B, physics sedimentation: utilize NCl
3with the difference of liquid chlorine density, the NCl in feeder 6 will be drained into
3only half an hour is put, to ensure the NCl that density is heavier with the mixed liquor of liquid chlorine
3be deposited in the flanging taper low head 29 of feeder 6 by Action of Gravity Field;
C, absorbing liquid configure: in neutralizing tank 13, add industry water and NaOH by industry water import 22 and NaOH import 24 respectively, be configured to the absorbing liquid that mass concentration is 15% ~ 20%, indicate according to neutralizing tank liquid level gauge 10, keep the absorbing liquid liquid level in neutralizing tank 13 to be 1/2 ~ 2/3 of volume;
D, chemical absorbing: open NCl
3control valve 7, by Action of Gravity Field lentamente by NCl
3be delivered to neutralizing tank 13, make it to react with absorbing liquid, its principle is NaOH and NCl
3the HClO that hydrolysis produces reacts, thus impels NCl
3further hydrolysis produces NH
3, reactional equation is as follows:
Net reaction:
For the vapor liquid equilibrium in guarantee neutralizing tank and reaction rate, the gas-phase product NH in course of reaction
3absorption process is carried out from waste gas outlet 23 discharge with chlorine;
E, analytical test: at closedown NCl
3sample from sample tap 9 before control valve 7, close the air bleeding valve 3 at feeder 6 top after sampling, use colorimetrically analysing NCl
3mass percentage content whether≤0.5%, if content overproof, need to increase NCl
3the frequency of discharge;
F, neutralizer reclaim: open neutralizer pump intake valve 14 and neutralizer control valve 16, will with NCl
3chlor-alkali internal system is delivered to again in order to absorb waste chlorine with liquid pump 15 during reacted neutralizer passes through.
Claims (9)
1. reduce a device for danger of nitrogen trichloride in chlor-alkali production, it is characterized in that: comprise feeder (6) and neutralizing tank (13), the middle and upper part of described feeder (6) is provided with and NCl
3the NCl that delivery pipe (17) connects
3entrance (18), described feeder (6) top is provided with exhaust outlet (19), and described feeder (6) bottom is provided with NCl
3outlet (20), described NCl
3outlet (20) is by pipeline and the NCl being arranged on neutralizing tank (13) top
3import (21) is connected, described neutralizing tank (13) top is also provided with industry water import (22), waste gas outlet (23) and NaOH import (24), described neutralizing tank (13) bottom is provided with neutralizer outlet (25), described neutralizer outlet (25) by pipeline with in be connected with liquid pump (15), be connected with chlor-alkali internal system by pipeline with liquid pump (15) in described.
2. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, is characterized in that: described NCl
3delivery pipe (17) and N
2scavenging conduit (26) is communicated with, described NCl
3delivery pipe (17) is provided with NCl
3drain valve (2), described N
2scavenging conduit (26) is provided with N
2blow down valve (1).
3. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, is characterized in that: described feeder (6) top is provided with feeder liquid level gauge (4) and Pressure gauge (5).
4. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1 or 3, it is characterized in that: described feeder (6) comprises upper cover (27), cylindrical shell (28) and flanging taper low head (29), described upper cover (27) is connected by flange (30) with cylindrical shell (28), described flanging taper low head (29) is welded with cylindrical shell (28), and described cylindrical shell (28) top is provided with NCl
3entrance (18), described upper cover (27) is provided with feeder liquid level gauge (4) and Pressure gauge (5), and described upper cover (27) top is provided with exhaust outlet (19), and described flanging taper low head (29) bottom is provided with NCl
3outlet (20).
5. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, is characterized in that: described NCl
3the NCl on outlet (20) and neutralizing tank (13) top
3the pipeline that import (21) is connected is provided with sample tap (9), and described sample tap (9) place is provided with sample valve (8), described NCl
3outlet (20) place is provided with NCl
3control valve (7).
6. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, is characterized in that: the pipeline be connected with exhaust outlet (19) is provided with air bleeding valve (3).
7. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, is characterized in that: described neutralizing tank (13) side lower part is provided with neutralizing tank liquid level gauge (10).
8. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, it is characterized in that: the pipeline be connected with industry water import (22) is provided with industry water and adds valve (11), the pipeline be connected with NaOH import (24) is provided with NaOH and adds valve (12).
9. a kind of device reducing danger of nitrogen trichloride in chlor-alkali production according to claim 1, it is characterized in that: described neutralizer outlet (25) with in the pipeline that is connected with liquid pump (15) be provided with neutralizer pump intake valve (14), the pipeline be connected with chlor-alkali internal system with liquid pump (15) in described is provided with neutralizer control valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938663.8U CN205199281U (en) | 2015-11-23 | 2015-11-23 | Dangerous device of nitrogen trichloride in production of reduction chlor -alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938663.8U CN205199281U (en) | 2015-11-23 | 2015-11-23 | Dangerous device of nitrogen trichloride in production of reduction chlor -alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205199281U true CN205199281U (en) | 2016-05-04 |
Family
ID=55837026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520938663.8U Expired - Fee Related CN205199281U (en) | 2015-11-23 | 2015-11-23 | Dangerous device of nitrogen trichloride in production of reduction chlor -alkali |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205199281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327607A (en) * | 2015-11-23 | 2016-02-17 | 金川集团股份有限公司 | Device and method for reducing dangerousness of nitrogen trichloride during chlor-alkali production |
-
2015
- 2015-11-23 CN CN201520938663.8U patent/CN205199281U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327607A (en) * | 2015-11-23 | 2016-02-17 | 金川集团股份有限公司 | Device and method for reducing dangerousness of nitrogen trichloride during chlor-alkali production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190429 Address after: 737101 No. 1 Lanzhou Road, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Chemical New Materials Co., Ltd. Address before: No. 98 Jinchuan Road, Jinchang, Gansu Patentee before: Jinchuan Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20191123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |