CN102221127A - Liquid chlorine vaporization system for phosphorus trichloride production - Google Patents
Liquid chlorine vaporization system for phosphorus trichloride production Download PDFInfo
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- CN102221127A CN102221127A CN201010150011XA CN201010150011A CN102221127A CN 102221127 A CN102221127 A CN 102221127A CN 201010150011X A CN201010150011X A CN 201010150011XA CN 201010150011 A CN201010150011 A CN 201010150011A CN 102221127 A CN102221127 A CN 102221127A
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Abstract
The invention belongs to the field of chemical equipment, and discloses a liquid chlorine vaporization system for phosphorus trichloride production. The system is composed of a liquid chlorine steel bottle, a box-type calandria vaporizer and a chlorine buffer tank; the box-type calandria vaporizer is composed of a box body and a calandria; the calandria is a horizontal snake-shaped pipe structure, the horizontal pipe section of the structure is positioned in the box body, the bend pipe section of the structure is positioned out of the box body, and the bend pipe section and the horizontal pipe section are welded out of the box body. The calandria in the box body of the box-type calandria vaporizer provided by the invention has no welding line, the welding line is arranged at the bend head out of the box body, thus the safety hazard of liquid chlorine leakage caused by the heating of the welding line and the corrosion of the inner surface and the outer surface by the complete immersion of the calandria in hot water in the prior art is avoided; and the system has simple structure, is easy to operate, and is save and reliable.
Description
Technical field
The invention belongs to the chemical industry equipment field, relate to a kind of phosphorus trichloride production liquid chlorine carburetion system.
Background technique
The liquid chlorine vaporization is the primary operation that phosphorus trichloride is produced, and liquid chlorine is low-pressure liquefied property severe toxicity gas, belongs to the dangerization product.Least safe factor is: employed raw material is industrial table salt and water in the chlor-alkali production, keeps away and unavoidably brings ammonium class material into.When carrying out cell reaction with the refined brine that contains ammonium ion, ammonium ion then with electrolysate chlorine generation chemical reaction, generate agene.The latter enters the liquid chlorine production system together with chlorine.When chlorine was liquefied, agene also was liquefied and sneaks in the liquid chlorine.When using chlorine, can store the agene that together liquefies and bring when bottling in the gasifying pot gradually by chlorine gas liquefaction.And the boiling point of agene is than the boiling point of liquid chlorine much higher (agene boiling point＜71 ℃), liquid chlorine boiling point-34.6 ℃).The explosion risk content of agene is 5% in the liquid chlorine.When liquid chlorine in the gasifying pot is constantly vaporized, agene is not then vaporized or is vaporized not exclusively, and in the course of time, agene will enrichment gathers and reaches finite concentration, and under certain condition (as vibration, sunlight, organic substance effect etc.), then may cause the gasifying pot blast.
Liquid chlorine is many, and the vaporization amount of chlorine of steel cylinder self (particularly winter) can not satisfy the production needs sometimes by the discharging of steel cylinder gas phase, often adopts the direct-fired method of steel cylinder, to quicken vaporization.This method might make the liquid chlorine temperature sharply rise, and causes superpressure or safety plug fusing in liquid chlorine cylinder or the knock out drum, causes accident to take place.Also have quite a few enterprise that uses chlorine to adopt steel cylinder liquid phase discharging method.The liquid chlorine that goes out steel cylinder enters is with the gasifying pot of heating resistance collar to vaporize (gasifying pot belongs to third class(grade) pressure vessel), usually logical steam or hot water heating in the chuck.Logical steam can cause the sharply vaporization and wayward of jar interior liquid chlorine; Logical hot water then need increase by a cover hot water circulating device (as hot-water cylinder, hot water pump etc.).
Can safety and stability guarantee the required chlorine of phosphorus trichloride production when therefore how to guarantee the liquid chlorine vaporization, the gathering of agene in the minimizing system, the rational liquid chlorine gasification process equipment of design safety is very main.
Summary of the invention
The objective of the invention is above-mentioned deficiency, a kind of phosphorus trichloride production liquid chlorine carburetion system is provided at prior art.
Technological scheme of the present invention is:
A kind of phosphorus trichloride production liquid chlorine carburetion system, this system mainly is made up of liquid chlorine cylinder, box comb vaporizer, Chlorine Buffer Vessel; Liquid chlorine cylinder is connected with the liquid chlorine import of box comb vaporizer, the chlorine outlet of box comb vaporizer is connected with the chlorine inlet of Chlorine Buffer Vessel, box comb vaporizer mainly is made up of casing and comb, comb is horizontal coiler structure, the horizontal pipe section of described comb coiler structure is positioned at casing, and this section comb do not have weld seam, and the control of horizontal segment expansion is done, the bending tube section of comb coiler structure is outside casing, and bending tube section and horizontal pipeline section are in the casing external welding.
Described Chlorine Buffer Vessel bottom is provided with sewage draining exit.
Described Chlorine Buffer Vessel top is provided with safety valve.
The casing of described box comb vaporizer is provided with thermometer; Casing is communicated with the steam supply pipe road of steam supply equipment.
Described box comb vaporizer also is provided with a water level level meter, water intake, flow-off, box comb vaporizer bottom half and is provided with drain opening.
The pipeline of described connection liquid chlorine cylinder and box comb vaporizer is provided with the liquid chlorine flow control valve.
Beneficial effect of the present invention:
Comb in the box comb vaporizer of the present invention envelope does not have weld seam, the expansion pipe is made, its weld seam design elbow envelope outside, thus can avoid in the prior art comb is dipped in fully weld seam in the hot water because of being heated and the potential safety hazard of inside and outside two sides corrosion generation liquid chlorine leakage.
The present invention adopts the discharging of liquid chlorine cylinder liquid phase, adopt box calandria vaporizer, adopt hot water that the liquid chlorine passage is heated, not only can avoid directly steel cylinder being heated, and greatly degree reduction remaining agene amount in the liquid chlorine passage, the agene that is vaporized liquefies in Chlorine Buffer Vessel, is gathered in the knock out drum bottom.Sewage draining exit is set in the Chlorine Buffer Vessel, is used for regularly discharging the agene raffinate, accumulate, help the continuous production of liquid chlorine vaporization to prevent agene.
In sum, simple in structure, the easy operating, safe and reliable of the present invention.
Description of drawings
Fig. 1 is a phosphorus trichloride production of the present invention liquid chlorine vaporization device system.
Mark 1 is a liquid chlorine cylinder among the figure, and 2 is box comb vaporizer, and 2-1 is a casing, 2-2 is a comb, and 3 is Chlorine Buffer Vessel, and 4 is water intake, 5 is drain opening, and 6 is thermometer, and 7 is the steam supply pipe road, 8 is the water level level meter, 9 is sewage draining exit, and 10 is safety valve, and 11 is on-the-spot pressure gauge, 12 are temperature demonstration regulating system, 13 is the temperature converter, and 14 are pressure-display adjusting alarm system, and 15 is the pressure converter, 16 is the liquid chlorine flow control valve, 17 is flow-off, and 18 is hygrosensor, and 19 is pneumatic control valve, 20 is the liquid chlorine safety valve, and 21 is electronic scale.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment 1
A kind of phosphorus trichloride production liquid chlorine carburetion system, this system mainly is made up of liquid chlorine cylinder 1, box comb vaporizer 2, Chlorine Buffer Vessel 3; Liquid chlorine cylinder 1 is connected with the liquid chlorine import of box comb vaporizer 2, the chlorine outlet of box comb vaporizer 2 is connected with the chlorine inlet of Chlorine Buffer Vessel 3, between liquid chlorine cylinder 1 and the box comb vaporizer 2, all link to each other between box comb vaporizer 2 and the Chlorine Buffer Vessel 3 by pipeline, box comb vaporizer 2 mainly is made up of casing 2-1 and comb 2-2, comb 2-2 is horizontal coiler structure, the horizontal pipe section of described comb 2-2 coiler structure is positioned at casing 2-1, and this section comb does not have weld seam, the control of horizontal segment expansion is done, the bending tube section of comb 2-2 coiler structure is outside casing 2-1, and bending tube section and horizontal pipeline section are in casing 2-1 external welding.The elbow of weld seam design outside envelope of comb.
Liquid chlorine cylinder 1 is placed on the electronic scale 21, monitors liquid chlorine surplus in the liquid chlorine cylinder 1.
Chlorine Buffer Vessel 3 bottoms are provided with sewage draining exit 9.Sewage draining exit 9 is the discharging raffinate regularly, accumulates to prevent chlorination nitrogen.
Chlorine Buffer Vessel 3 tops are provided with safety valve 10 and on-the-spot pressure gauge 11.Under the abnormal conditions, system overpressure and safety valve jumping up can not releasing pressure automatically the time. the chlorine that leaks destroys tower with pipeline introducing accident alkali and handles, the superpressure blast that causes when avoiding releasing pressure automatically.
Box comb vaporizer 2 casing 2-1 are provided with thermometer 6; The steam supply pipe road 7 that casing 2-1 links to each other with the steam supply equipment is communicated with.The temperature of hot water is between 55 ℃～58 ℃ in the control box.
Flow-off 17, box comb vaporizer 2 bottom halves that box comb vaporizer 2 also is provided with water level in a water level level meter 8, water intake 4, the regulating box are provided with drain opening 5.Be used for regularly discharging raffinate, avoid scale buildup.
The pipeline that connects liquid chlorine cylinder 1 and box comb vaporizer 2 is provided with liquid chlorine flow control valve 16.In order to regulate the flow that liquid chlorine cylinder 1 flows to the liquid chlorine of box comb vaporizer 2.
Box comb vaporizer 2 also be provided with the temperature automatic regulating system, the temperature automatic regulating system mainly by the hygrosensor 18 that is positioned at box comb vaporizer envelope, be positioned at the outer temperature of casing and show that regulating system 12, temperature converter 13 form; Hygrosensor 18 shows that with temperature regulating system 12 links to each other, temperature in the case is sent to temperature shows regulating system 12, when the temperature inside the box is lower than or exceed setting value, temperature shows that regulating system 12 passes to temperature converter 13 with signal, the switch of the pneumatic control valve 19 of temperature converter 13 control vapor supplying apparatus.
System also can be provided with mainly and be regulated alarm system 14 and be positioned at the pressure alarm regulating system that the liquid chlorine valve 21 on the pipeline that connects liquid chlorine cylinder 1 and box comb vaporizer 2 is formed by pressure converter 15, pressure-display, operating room can give the alarm when Chlorine Buffer Vessel 3 superpressures on the one hand, can be adjusted the flow of the liquid chlorine of steel cylinder on the other hand according to back system process needs voluntarily by the pressure feedback on the knock out drum.Pressure converter 15 1 ends link to each other with Chlorine Buffer Vessel 3, the pressure signal of gathering Chlorine Buffer Vessel 3 is sent to pressure-display regulates alarm system 14, when Chlorine Buffer Vessel 3 superpressures, pressure-display regulates alarm system 14 warnings and control liquid chlorine safety valve 20 cuts out.
In the system on equipment and the pipeline all pressure gauge, thermometer, safety valves all adopt isolated.In case the corrosion of chlorine and cause metering inaccurate.
Described liquid chlorine cylinder 1 externally connects the copper tube that adopts through annealing in process, and can use after pressure test is qualified.The vaporizer that is adopted, pipeline, knock out drum etc. should meet the requirement of " safe technology of pressure vessel supervision rules ".
Claims (6)
1. phosphorus trichloride production liquid chlorine carburetion system, this system mainly is made up of liquid chlorine cylinder (1), box comb vaporizer (2), Chlorine Buffer Vessel (3); Liquid chlorine cylinder (1) is connected with the liquid chlorine import of box comb vaporizer (2), the chlorine outlet of box comb vaporizer (2) is connected with the chlorine inlet of Chlorine Buffer Vessel (3), box comb vaporizer (2) mainly is made up of casing (2-1) and comb (2-2), comb (2-2) is horizontal coiler structure, the horizontal pipe section that it is characterized in that described comb (2-2) coiler structure is positioned at casing (2-1), the bending tube section of comb (2-2) coiler structure is outside casing (2-1), and bending tube section and horizontal pipeline section are in casing (2-1) external welding.
2. liquid chlorine vaporization device according to claim 1 system is characterized in that described Chlorine Buffer Vessel (3) bottom is provided with sewage draining exit (9).
3. liquid chlorine vaporization device according to claim 1 system is characterized in that described Chlorine Buffer Vessel (3) top is provided with safety valve (10).
4. liquid chlorine vaporization device according to claim 1 system is characterized in that the casing (2-1) of described box comb vaporizer (2) is provided with thermometer (6); Casing (2-1) is communicated with the steam supply pipe road (7) of steam supply equipment.
5. liquid chlorine vaporization device according to claim 1 system is characterized in that described box comb vaporizer (2) also is provided with a water level level meter (8), water intake (4), flow-off (17), box comb vaporizer (2) bottom half and is provided with drain opening (5).
6. liquid chlorine vaporization device according to claim 1 system is characterized in that the described connection liquid chlorine cylinder (1) and the pipeline of box comb vaporizer (2) are provided with liquid chlorine flow control valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010150011XA CN102221127A (en) | 2010-04-19 | 2010-04-19 | Liquid chlorine vaporization system for phosphorus trichloride production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010150011XA CN102221127A (en) | 2010-04-19 | 2010-04-19 | Liquid chlorine vaporization system for phosphorus trichloride production |
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| CN102221127A true CN102221127A (en) | 2011-10-19 |
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| CN201010150011XA Pending CN102221127A (en) | 2010-04-19 | 2010-04-19 | Liquid chlorine vaporization system for phosphorus trichloride production |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292154A (en) * | 2013-06-07 | 2013-09-11 | 江苏天源化工有限公司 | New method for liquid chlorine vaporization |
| CN103771361A (en) * | 2013-12-23 | 2014-05-07 | 攀钢集团钛业有限责任公司 | Method for evaporating nitrogen trichloride-containing liquid nitrogen |
| CN104235605A (en) * | 2014-06-22 | 2014-12-24 | 李安民 | Technique and device for continuous gasification production of overheated chlorine from liquid chlorine |
| CN104615168A (en) * | 2014-12-03 | 2015-05-13 | 金川集团股份有限公司 | Automatic control system for pressure of liquid chlorine gasification device |
| CN104950055A (en) * | 2015-03-30 | 2015-09-30 | 常州磐诺仪器有限公司 | Online gasification device |
| CN110056777A (en) * | 2019-04-17 | 2019-07-26 | 江苏中建工程设计研究院有限公司 | A kind of efficient liquid chlorine vaporization device of safety and environmental protection and technique |
| CN110067935A (en) * | 2019-04-17 | 2019-07-30 | 江苏中建工程设计研究院有限公司 | A kind of efficient liquid chlorine vaporization device of safety and environmental protection |
| CN114941802A (en) * | 2022-05-31 | 2022-08-26 | 赣州石磊稀土材料有限公司 | Automatic constant-pressure gas making and quantitative gas supply system and method for rare earth fluoride production |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292154A (en) * | 2013-06-07 | 2013-09-11 | 江苏天源化工有限公司 | New method for liquid chlorine vaporization |
| CN103771361A (en) * | 2013-12-23 | 2014-05-07 | 攀钢集团钛业有限责任公司 | Method for evaporating nitrogen trichloride-containing liquid nitrogen |
| CN103771361B (en) * | 2013-12-23 | 2015-11-04 | 攀钢集团钛业有限责任公司 | A kind of method of evaporating of the liquid chlorine containing nitrogen trichloride |
| CN104235605A (en) * | 2014-06-22 | 2014-12-24 | 李安民 | Technique and device for continuous gasification production of overheated chlorine from liquid chlorine |
| CN104615168A (en) * | 2014-12-03 | 2015-05-13 | 金川集团股份有限公司 | Automatic control system for pressure of liquid chlorine gasification device |
| CN104615168B (en) * | 2014-12-03 | 2017-04-05 | 金川集团股份有限公司 | Liquid chlorine gasification device pressure automatic control system |
| CN104950055A (en) * | 2015-03-30 | 2015-09-30 | 常州磐诺仪器有限公司 | Online gasification device |
| CN110056777A (en) * | 2019-04-17 | 2019-07-26 | 江苏中建工程设计研究院有限公司 | A kind of efficient liquid chlorine vaporization device of safety and environmental protection and technique |
| CN110067935A (en) * | 2019-04-17 | 2019-07-30 | 江苏中建工程设计研究院有限公司 | A kind of efficient liquid chlorine vaporization device of safety and environmental protection |
| CN110067935B (en) * | 2019-04-17 | 2021-09-21 | 江苏中建工程设计研究院有限公司 | Safe, environment-friendly and efficient liquid chlorine vaporizing device |
| CN114941802A (en) * | 2022-05-31 | 2022-08-26 | 赣州石磊稀土材料有限公司 | Automatic constant-pressure gas making and quantitative gas supply system and method for rare earth fluoride production |
| CN114941802B (en) * | 2022-05-31 | 2024-03-29 | 赣州石磊稀土材料有限公司 | Automatic constant-pressure gas making and quantitative gas supply system and method for rare earth fluoride production |
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Application publication date: 20111019 |