CN207576122U - The recovery tower water outlet reutilization system of triethyl phosphite production system - Google Patents
The recovery tower water outlet reutilization system of triethyl phosphite production system Download PDFInfo
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- CN207576122U CN207576122U CN201721601057.2U CN201721601057U CN207576122U CN 207576122 U CN207576122 U CN 207576122U CN 201721601057 U CN201721601057 U CN 201721601057U CN 207576122 U CN207576122 U CN 207576122U
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- recovery tower
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- triethyl phosphite
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Abstract
Recovery tower the utility model is related to triethyl phosphite production system is discharged reutilization system, it is characterised in that：Including recovery tower, phosphorus trichloride tail gas storage tank, alkaline sewage storage tank, circulating pump, water-jet pump and sewage overflow storage tank, the sewage inlet of alkaline sewage storage tank is connected with the discharging plumbing drain of recovery tower, the outlet of sewer of alkaline sewage storage tank is connected with the entrance pipe of circulating pump, the export pipeline of circulating pump is connected with the top water inlet of water-jet pump, the side air inlet of water-jet pump is connected with the outlet pipe of phosphorus trichloride tail gas storage tank, the bottom jet orifice end of water-jet pump is connected with the extension pipeline stretched into alkaline sewage storage tank below liquid level, extend line end to be equipped in diffusing opening and diffusing opening equipped with filtering sieve plate, the overflow port of alkaline sewage storage tank is connected with the inlet pipeline of sewage overflow storage tank.Its utility model reduces the consumption of neutralization alkali and hydrochloric acid, so as to reduce the production cost of entire production system.
Description
Technical field
The utility model is related to the auxiliary systems of triethyl phosphite production system, particularly triethyl phosphite production system
The recovery tower water outlet reutilization system of system.
Background technology
In the production process of triethyl phosphite, raw material phosphorus trichloride, absolute ethyl alcohol, purified petroleum benzin, triethylamine are through flowmeter
Metering is continuously added to reaction kettle by a certain percentage, reacts reaction of formation liquid, reaction solution continuously enters neutralization kettle, and adds in metering
Aqueous slkali neutralized, the neutralizer after neutralization continuously enters layering tower, the thick ester containing triethyl phosphite pass through drying
Device is dried, and the process spent water isolated enters recovery tower and carries out solvent recovery, is handled subsequently into sewage disposal system,
For dried dry ester by distillation, the triethyl phosphite for isolating high-purity enters groove, as finished product sale to be packaged, divides
Purified petroleum benzin, triethylamine from after return to synthesis procedure recycling.
In entire production process, the tail gas of raw material phosphorus trichloride reacted with water after in acidity, need special processing system
System is handled, and constantly has process spent water entrance in recovery tower, also constantly there is the discharge of the sewage after recycling design, the dirt of discharge
Water needs to be neutralized with hydrochloric acid in alkalinity.The place of the vent gas treatment cost of phosphorus trichloride and the discharging sewage of recovery tower
It is larger to manage cost, so as to increase the production cost of entire production system.
Invention content
The recovery tower water outlet that the purpose of this utility model is to provide for a kind of triethyl phosphite production system recycles
System fundamentally solves the vent gas treatment cost of phosphorus trichloride and going out for recovery tower in existing triethyl phosphite production system
Expect the problem of processing cost of sewage is larger, the consumption of neutralization alkali and hydrochloric acid is reduced, so as to reduce entire production system
Production cost.
The technical solution of the utility model is：
A kind of recovery tower water outlet reutilization system of triethyl phosphite production system, it is characterised in that：Including recovery tower,
Phosphorus trichloride tail gas storage tank, alkaline sewage storage tank, circulating pump, water-jet pump and sewage overflow storage tank, the alkaline sewage
The top of storage tank is equipped with sewage inlet and sewage inlet is connected with the discharging plumbing drain of recovery tower, the alkaline sewage storage tank
Bottom sides are equipped with outlet of sewer and the outer end of outlet of sewer is connected with the entrance pipe of circulating pump, the outlet of the circulating pump
Road is connected with the top water inlet of the water-jet pump of vertical arrangement, the side air inlet and trichlorine of the water-jet pump
The outlet pipe for changing phosphorus tail gas storage tank is connected, and the bottom jet orifice end of the water-jet pump, which is connected with, stretches into alkaline sewage
Extension pipeline in storage tank below liquid level, the extension line end, which is equipped in diffusing opening and diffusing opening, is equipped with filtering sieve plate, institute
The top for stating alkaline sewage storage tank is connected equipped with overflow port and overflow port with the inlet pipeline of sewage overflow storage tank, and the sewage overflows
The outlet pipeline of stream storage tank is connected with the sewage disposal feed-line of triethyl phosphite production system.
The recovery tower water outlet reutilization system of above-mentioned triethyl phosphite production system, the sewage overflow storage tank go out
Water lines are equipped with the sewage disposal feed-line that the sewage in sewage overflow storage tank is guided into triethyl phosphite production system
Sewage pump.
The recovery tower of above-mentioned triethyl phosphite production system is discharged reutilization system, is set in the sewage overflow storage tank
There is the low liquid level limit switch that the high liquid level limit switch of control sewage pump startup and control sewage pump stop.
The recovery tower water outlet reutilization system of above-mentioned triethyl phosphite production system, the sewage overflow storage tank side
Equipped with the pH value sensor stretched into case below liquid level, to grasp the acid-base value for entering the sewage in sewage overflow storage tank, just
In post-processing.
The beneficial effects of the utility model are：
The discharging sewage of recovery tower is used for the absorption of phosphorus trichloride tail gas, the production of triethyl phosphite in the utility model
Raw material phosphorus trichloride tail gas is acidity in the process, and the discharging sewage of recovery tower is alkalinity, and recovery tower discharges sewage in circulating pump
Under the action of enter vacuum jet pump, injected jointly in alkaline sewage storage tank with the phosphorus trichloride tail gas being introduced into, phosphorus trichloride tail
Gas comes into full contact with recovery tower discharging sewage and realizes neutralization.Phosphorus trichloride tail gas in the production process of triethyl phosphite and
Discharging sewage utilizes each other, reduces the consumption of neutralization alkali and hydrochloric acid, has saved production cost.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1. recovery tower, 2. phosphorus trichloride tail gas storage tanks, 3. water-jet pumps, 4. sewage overflow storage tanks, 5.PH values
Sensor, 6. sewage pumps, 7. circulating pumps, 8. overflow ports, 9. diffusing openings, 10. filtering sieve plates, 11. alkaline sewage storage tanks, 12. dirts
Water inlet, 13. extend pipeline, 14. discharging plumbing drains, 15. sewage disposal feed-lines.
Specific embodiment
In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the recovery tower water outlet reutilization system of the triethyl phosphite production system, including recovery tower 1, three
Phosphorus chloride tail gas storage tank 2, alkaline sewage storage tank 11, circulating pump 7, water-jet pump 3 and sewage overflow storage tank 4.The alkalinity
The top of sewage storage tank 11 is equipped with sewage inlet 12 and sewage inlet 12 is connected with the discharging plumbing drain 14 of recovery tower 1, described
The bottom sides of alkaline sewage storage tank 11 are equipped with outlet of sewer and the outer end of outlet of sewer is connected with the entrance pipe of circulating pump 7,
The export pipeline of the circulating pump 7 is connected with the top water inlet of the water-jet pump 3 of vertical arrangement, the water injection vacuum
The side air inlet of pump 3 is connected with the outlet pipe of phosphorus trichloride tail gas storage tank 2, the bottom jet stream of the water-jet pump 3
Mouth end is connected with the extension pipeline 13 stretched into alkaline sewage storage tank 11 below liquid level, and 13 end of the extension pipeline, which is equipped with, to be expanded
Be equipped with filtering sieve plate 10 in raw edge 9 and diffusing opening 9, the top of the alkaline sewage storage tank 11 be equipped with overflow port 8 and overflow port 8 with
The inlet pipeline of sewage overflow storage tank 4 is connected, outlet pipeline and the triethyl phosphite production system of the sewage overflow storage tank 4
Sewage disposal feed-line 15 be connected.
In the present embodiment, the outlet pipeline of the sewage overflow storage tank 4, which is equipped with, draws the sewage in sewage overflow storage tank 4
To the sewage pump 6 of the sewage disposal feed-line 15 of triethyl phosphite production system.Control is equipped in the sewage overflow storage tank 4
The low liquid level limit switch that the high liquid level limit switch and control sewage pump 6 that sewage pump 6 processed starts stop.The sewage overflow storage
4 side of case is equipped with the pH value sensor 5 stretched into case below liquid level, enters the sewage in sewage overflow storage tank 4 to grasp
Acid-base value, convenient for post-processing.Be covered with filter hole on the filtering sieve plate 10, filter out impurities in water, filter hole it is a diameter of
12mm, pitch of holes 40mm.
The course of work：The discharging sewage of the recovery tower 1 in alkaline sewage storage tank 11 is entered first in the effect of circulating pump 7
It is lower to enter water-jet pump 3, it is injected jointly in alkaline sewage storage tank 11 with the phosphorus trichloride tail gas being introduced into, phosphorus trichloride tail gas
It is come into full contact with recovery tower discharging sewage and realizes neutralization；When the sewage level in alkaline sewage storage tank 11 reaches overflow port 8,
It is flowed into sewage overflow storage tank 4 by overflow port 8, the startup sewage pump 6 when reaching high liquid level limit-switch positions draws sewage
The sewage disposal feed-line 15 for entering triethyl phosphite production system carries out subsequent processing.
The embodiment created above to the utility model is described in detail, but the content is only the utility model wound
The preferred embodiment made, it is impossible to be construed as limiting the scope of the utility model.It is all to create range according to the utility model
All the changes and improvements made etc. should all be still belonged within this patent covering scope.
Claims (4)
1. a kind of recovery tower water outlet reutilization system of triethyl phosphite production system, it is characterised in that：Including recovery tower, three
Phosphorus chloride tail gas storage tank, alkaline sewage storage tank, circulating pump, water-jet pump and sewage overflow storage tank, the alkaline sewage storage
The top of case is equipped with sewage inlet and sewage inlet is connected with the discharging plumbing drain of recovery tower, the bottom of the alkaline sewage storage tank
Portion side is equipped with outlet of sewer and the outer end of outlet of sewer is connected with the entrance pipe of circulating pump, the export pipeline of the circulating pump
It is connected with the top water inlet of the water-jet pump of vertical arrangement, the side air inlet and tri-chlorination of the water-jet pump
The outlet pipe of phosphorus tail gas storage tank is connected, and the bottom jet orifice end of the water-jet pump, which is connected with, stretches into alkaline sewage storage
Extension pipeline in case below liquid level, the extension line end, which is equipped in diffusing opening and diffusing opening, is equipped with filtering sieve plate, described
The top of alkaline sewage storage tank is equipped with overflow port and overflow port is connected with the inlet pipeline of sewage overflow storage tank, the sewage overflow
The outlet pipeline of storage tank is connected with the sewage disposal feed-line of triethyl phosphite production system.
2. the recovery tower water outlet reutilization system of triethyl phosphite production system according to claim 1, feature exist
In：The outlet pipeline of the sewage overflow storage tank, which is equipped with, guides the sewage in sewage overflow storage tank into triethyl phosphite production
The sewage pump of the sewage disposal feed-line of system.
3. the recovery tower water outlet reutilization system of triethyl phosphite production system according to claim 2, feature exist
In：The low liquid that the high liquid level limit switch of control sewage pump startup and control sewage pump stop is equipped in the sewage overflow storage tank
Position limit switch.
4. the recovery tower water outlet reutilization system of triethyl phosphite production system according to claim 1, feature exist
In：The sewage overflow storage tank side is equipped with the pH value sensor stretched into case below liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601057.2U CN207576122U (en) | 2017-11-27 | 2017-11-27 | The recovery tower water outlet reutilization system of triethyl phosphite production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601057.2U CN207576122U (en) | 2017-11-27 | 2017-11-27 | The recovery tower water outlet reutilization system of triethyl phosphite production system |
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| CN207576122U true CN207576122U (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112791680A (en) * | 2020-12-24 | 2021-05-14 | 华阳新材料科技集团有限公司 | A nickel phosphorus complex synthesis system for adiponitrile production |
-
2017
- 2017-11-27 CN CN201721601057.2U patent/CN207576122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112791680A (en) * | 2020-12-24 | 2021-05-14 | 华阳新材料科技集团有限公司 | A nickel phosphorus complex synthesis system for adiponitrile production |
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