CN106565774A - Continuous tower-type washing method of O,O-dimethylphosphoroamidothioate crude product - Google Patents
Continuous tower-type washing method of O,O-dimethylphosphoroamidothioate crude product Download PDFInfo
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- CN106565774A CN106565774A CN201610969386.6A CN201610969386A CN106565774A CN 106565774 A CN106565774 A CN 106565774A CN 201610969386 A CN201610969386 A CN 201610969386A CN 106565774 A CN106565774 A CN 106565774A
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- 239000012043 crude product Substances 0.000 title claims abstract description 52
- 238000005406 washing Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 48
- 238000000605 extraction Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 150000001412 amines Chemical class 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 3
- 229960001196 thiotepa Drugs 0.000 claims description 3
- FOCVUCIESVLUNU-UHFFFAOYSA-N Thiotepa Chemical compound C1CN1P(N1CC1)(=S)N1CC1 FOCVUCIESVLUNU-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- PFNFFQXMRSDOHW-UHFFFAOYSA-N spermine Chemical compound NCCCNCCCCNCCCN PFNFFQXMRSDOHW-UHFFFAOYSA-N 0.000 description 8
- 229940063675 spermine Drugs 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- WQOXQRCZOLPYPM-UHFFFAOYSA-N Dimethyl disulfide Natural products CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 1
- YASYVMFAVPKPKE-UHFFFAOYSA-N acephate Chemical compound COP(=O)(SC)NC(C)=O YASYVMFAVPKPKE-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003986 organophosphate insecticide Substances 0.000 description 1
- 239000003987 organophosphate pesticide Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/22—Amides of acids of phosphorus
- C07F9/24—Esteramides
- C07F9/2454—Esteramides the amide moiety containing a substituent or a structure which is considered as characteristic
- C07F9/2458—Esteramides the amide moiety containing a substituent or a structure which is considered as characteristic of aliphatic amines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The invention discloses a continuous tower-type washing method of O,O-dimethylphosphoroamidothioate crude product. The method includes the following steps that (1) the O,O-dimethylphosphoroamidothioate crude product serves as a raw material, and pure water serves as an extraction agent; (2) the O,O-dimethylphosphoroamidothioate crude product serves as a heavy phase to be continuously injected into an extraction tower from a heavy phase inlet of the extraction tower, the pure water serves as a light phase to be continuously injected into the extraction tower from a light phase inlet of the extraction tower, after the light phase and the heavy phase are in sufficient contact, the heavy phase flows out of a heavy phase outlet of the extraction tower, and the light phase flows out of a light phase outlet of the extraction tower; and (3) timing is carried out when water flows out from the light phase outlet of the extraction tower, heavy phase samples flowing out from the heavy phase outlet of the extraction tower start to be collected after 4 h to 6 h, the content of ammonium chloride in the heavy phase samples is detected, and the heavy phase flowing out from the heavy phase outlet starts to be stored after the content of ammonium chloride in the heavy phase samples is smaller than 0.1%. By means of the method, the content of ammonium chloride in the O,O-dimethylphosphoroamidothioate crude product can be effectively reduced.
Description
Technical field
The present invention relates to organophosphorus pesticide field, more particularly to a kind of continuous tower of O, O- dimethyl thiophosphoryl amide crude product
Formula method for washing.
Background technology
O, O- dimethyl thiophosphoryl amide is the important intermediate of organophosphorus insecticide orthene, the end of the year 2015, entirely
Ball often produces O, about 100,000 tons of O- dimethyl thiophosphoryl amides per year, and my company often produces O per year, about 40,000 tons of O- dimethyl thiophosphoryl amides,
The 40% of whole world annual output is accounted for, a certain amount of ammonium chloride can be mingled with during producing O, O- dimethyl thiophosphoryl amides, be mingled with
Ammonium chloride content it is higher when, during follow-up vacuum dehydration spermine, have more ammonium chloride distillation blocking true
Vacant duct and vacuum pump, cause to overhaul frequency height so that production efficiency declines, production cost is raised.
In prior art, the method for O, O- dimethyl thiophosphoryl amide crude product separating ammonium chloride is that tubular type is washed, i.e. O, O-
Dimethyl thiophosphoryl amide crude product and water first mixes with pump by a certain percentage, separation water and thick amine in phase separator again, this kind of
The isolated O of mode, in O- dimethyl thiophosphoryl amides the content of ammonium chloride more than 0.5%, the content of ammonium chloride still compared with
Height, during follow-up spermine processed, can still block vacuum pipe and vacuum pump.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of to reduce O, O- dimethyl thiophosphoryl amide crude products
The continuous tower-type method for washing of middle ammonium chloride content.
A kind of continuous tower-type method for washing of O, O- dimethyl thiophosphoryl amide crude product, comprises the following steps：
1) raw material and extractant are prepared：Raw material is O, O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thio phosphinylidyne
Amine crude product is the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride；Extractant is pure water；Pure water and O, O- dimethyl disulfide
It is immiscible for phosphamide, and dissolubility of the ammonium chloride in pure water is more than the dissolving in O, O- dimethyl thiophosphoryl amides
Degree, can efficiently extract ammonium chloride as extractant using pure water, and pure water is nontoxic, low price.
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product is continuously noted from the heavy liquid inlet of extraction tower as heavy phase
Enter；Pure water is continuously injected into from the light phase inlet of extraction tower as light phase；Heavy phase is constantly settled downwards, light phase continuous rising, light phase
After being fully contacted with heavy phase, heavy phase is flowed out from the heavy out of extraction tower, and the light phase light phase export from extraction tower flows out；
3) sample, analysis：Start timing when the light phase export of extraction tower there are flowing out, start to collect after 4～6 hours from extraction
The heavy phase sample that the heavy out of tower flows out is taken, the content of ammonium chloride in heavy phase sample is tested and analyzed；The chlorine in heavy phase sample
After the content of change ammonium is less than 0.1%, start to store from heavy out the heavy phase for flowing out；When the content of ammonium chloride in heavy phase sample it is little
In 0.1%, be conducive to the process in follow-up vacuum dehydration spermine, prevent vacuum pipe and vacuum pump blocking.
Preferably, the extraction tower is turntable extracting tower or packed extraction tower.
Preferably, the extraction tower is turntable extracting tower, and the rotating speed for controlling turntable extracting tower is 300～500r/
Min, controls O, and the charging rate of O- dimethyl thiophosphoryl amide crude products is 5000～7000kg/h, controls the speed of pure water feed
For 500～700kg/h, the temperature for controlling turntable extracting tower is 25～35 DEG C, and the turntable extracting tower is high 14～16 meters, rotating disk extraction
A diameter of 0.8～1.0 meter of tower is taken, a diameter of 0.5～0.7 meter of rotating disk, plate spacing is 0.3～0.5 meter, and the number of column plate is
30～40 pieces；By the rotating speed for controlling turntable extracting tower, the parameter such as charging rate and temperature realizes pure water and O, O- dimethyl
Thio-phosphamide crude product is preferably contacted, and reaches preferably effect of extracting.
Preferably, step 2) continuous washing combines washing process using turntable extracting tower with packed extraction tower, i.e.,
O, O- dimethyl thiophosphoryl amide crude product carries out initial water wash first with turntable extracting tower, by the heavy out of turntable extracting tower
The heavy phase of outflow is passed through the heavy liquid inlet of packed extraction tower and further washes；Largely can go first with turntable extracting tower
Except O, the ammonium chloride in O- dimethyl thiophosphoryl amide crude products, then ammonium chloride is further removed using packed extraction tower, it is maximum
Limit ground removes O, ammonium chloride in O- dimethyl thiophosphoryl amide crude products.
It is an advantage of the current invention that：The method can be effectively reduced O, ammonium chloride in O- dimethyl thiophosphoryl amide crude products
Content, prevents ammonium chloride during follow-up vacuum dehydration spermine, blocks vacuum pipe and vacuum pump, and the method is simple,
It is easy to operate, it is using pure water as extractant, nontoxic, reduce to environment ground contamination.
Description of the drawings
Structural representations of the Fig. 1 for the turntable extracting tower of embodiment 1～3；
Fig. 2 combines water washing device structural representation for the turntable extracting tower of embodiment 4 with packed extraction tower；
In figure, each part numbers are as follows：The heavy liquid inlet 1.1, turntable extracting tower of turntable extracting tower 1, turntable extracting tower it is light
The heavy out 1.4 of the light phase export 1.3, turntable extracting tower of phase entrance 1.2, turntable extracting tower, packed extraction tower 2, filler extraction
Take the light phase export 2.3, packed extraction tower of the light phase inlet 2.2, packed extraction tower of the heavy liquid inlet 2.1, packed extraction tower of tower
Heavy out 2.4.
Specific embodiment
To more fully understand the present invention, invention is described in detail below with reference to accompanying drawing and instantiation.
To solve to there is O in prior art, the higher problem of the content of ammonium chloride in O- dimethyl thiophosphoryl amide crude products,
The present invention provides a kind of reduction O, and the continuous tower-type method for washing of the content of ammonium chloride in O- dimethyl thiophosphoryl amide crude products should
By extracting tower apparatus, method realizes that, specifically, by O, used as heavy phase, pure water is used as light for O- dimethyl thiophosphoryl amides crude product
Phase, the dissolubility using ammonium chloride in pure water realize O, O- diformazans more than the dissolubility in O, O- dimethyl thiophosphoryl amides
Ammonium chloride in base thio-phosphamide crude product is transferred in pure water, and reduces O from realization, in O- dimethyl thiophosphoryl amide crude products
The content of ammonium chloride.Below by by specific embodiment come to the present invention optimal way be described in detail.
Embodiment 1
A kind of continuous tower-type method for washing of O, O- dimethyl thiophosphoryl amide crude product, with reference to shown in Fig. 1, is extracted by rotating disk
Take tower 1 to realize, specifically include following steps：
1) raw material and extractant are prepared：Raw material is O, O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thio phosphinylidyne
Amine crude product is the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride, and wherein the content of ammonium chloride is 0.56%；Extractant
For pure water；
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product as heavy phase, from the heavy liquid inlet 1.1 of turntable extracting tower
It is continuously injected into；Pure water is continuously injected into from the light phase inlet 1.2 of turntable extracting tower as light phase；The rotating speed of control turntable extracting tower
For 300r/min, the charging rate of O, O- dimethyl thiophosphoryl amide crude product is 5000kg/h, and the speed of pure water feed is
500kg/h, the temperature of turntable extracting tower is 25 DEG C, and the turntable extracting tower is high 15 meters, a diameter of 0.9 meter of turntable extracting tower,
A diameter of 0.6 meter of rotating disk, plate spacing are 0.4 meter, and the number of column plate is 35 pieces；
In the presence of the rotating disk of rotation, heavy phase is constantly settled downwards, light phase continuous rising, light phase to be fully contacted with heavy phase
Afterwards, heavy phase is flowed out from the heavy out 1.4 of turntable extracting tower, light phase to flow out from the light phase export 1.3 of turntable extracting tower；
3) sample, analysis：The light phase export 1.3 of turntable extracting tower starts timing when there are flowing out, start to collect after 5 hours
From the heavy phase sample that the heavy out 1.4 of turntable extracting tower flows out, the content of ammonium chloride in heavy phase sample is tested and analyzed；Jing is examined
Survey, the content of ammonium chloride is 0.07% in heavy phase sample, reach the standard of the content of ammonium chloride less than 0.1%, start to store from
The heavy phase that the heavy out 1.4 of turntable extracting tower flows out.
Embodiment 2
A kind of continuous tower-type method for washing of O, O- dimethyl thiophosphoryl amide crude product, with reference to shown in Fig. 1, is extracted by rotating disk
Take tower 1 to realize, specifically include following steps：
1) raw material and extractant are prepared：Raw material is O, O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thio phosphinylidyne
Amine crude product is the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride, and wherein the content of ammonium chloride is 0.56%；Extractant
For pure water；
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product as heavy phase, from the heavy liquid inlet 1.1 of turntable extracting tower
It is continuously injected into；Pure water is continuously injected into from the light phase inlet 1.2 of turntable extracting tower as light phase；The rotating speed of control turntable extracting tower
For 400r/min, the charging rate of O, O- dimethyl thiophosphoryl amide crude product is 6000kg/h, and the speed of pure water feed is
600kg/h, the temperature of turntable extracting tower is 30 DEG C, and the turntable extracting tower is high 14 meters, a diameter of 0.8 meter of turntable extracting tower,
A diameter of 0.5 meter of rotating disk, plate spacing are 0.3 meter, and the number of column plate is 30 pieces；
In the presence of the rotating disk of rotation, heavy phase is constantly settled downwards, light phase continuous rising, light phase to be fully contacted with heavy phase
Afterwards, heavy phase is flowed out from the heavy out 1.4 of turntable extracting tower, light phase to flow out from the light phase export 1.3 of turntable extracting tower；
3) sample, analysis：The light phase export 1.3 of turntable extracting tower starts timing when there are flowing out, start to collect after 4 hours
From the heavy phase sample that the heavy out 1.4 of turntable extracting tower flows out, the content of ammonium chloride in heavy phase sample is tested and analyzed；Jing is examined
Survey, the content of ammonium chloride is 0.095% in heavy phase sample, reach the standard of the content of ammonium chloride less than 0.1%, start to store from
The heavy phase that the heavy out 1.4 of turntable extracting tower flows out.
Embodiment 3
A kind of continuous tower-type method for washing of O, O- dimethyl thiophosphoryl amide crude product, with reference to shown in Fig. 1, is extracted by rotating disk
Take tower 1 to realize, specifically include following steps：
1) raw material and extractant are prepared：Raw material is O, O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thio phosphinylidyne
Amine crude product is the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride, and wherein the content of ammonium chloride is 0.56%；Extractant
For pure water；
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product as heavy phase, from the heavy liquid inlet 1.1 of turntable extracting tower
It is continuously injected into；Pure water is continuously injected into from the light phase inlet 1.2 of turntable extracting tower as light phase；The rotating speed of control turntable extracting tower
For 500r/min, the charging rate of O, O- dimethyl thiophosphoryl amide crude product is 7000kg/h, and the speed of pure water feed is
700kg/h, the temperature of turntable extracting tower is 35 DEG C, and the turntable extracting tower is high 16 meters, a diameter of 1.0 meters of turntable extracting tower,
A diameter of 0.7 meter of rotating disk, plate spacing are 0.5 meter, and the number of column plate is 40 pieces；
In the presence of the rotating disk of rotation, heavy phase is constantly settled downwards, light phase continuous rising, light phase to be fully contacted with heavy phase
Afterwards, heavy phase is flowed out from the heavy out 1.4 of turntable extracting tower, light phase to flow out from the light phase export 1.3 of turntable extracting tower；
3) sample, analysis：The light phase export 1.3 of turntable extracting tower starts timing when there are flowing out, start to collect after 6 hours
From the heavy phase sample that the heavy out 1.4 of turntable extracting tower flows out, the content of ammonium chloride in heavy phase sample is tested and analyzed；Jing is examined
Survey, the content of ammonium chloride is 0.065% in heavy phase sample, reach the standard of the content of ammonium chloride less than 0.1%, start to store from
The heavy phase that the heavy out 1.4 of turntable extracting tower flows out.
Embodiment 4
A kind of continuous tower-type method for washing of O, O- dimethyl thiophosphoryl amide crude product, with reference to shown in Fig. 2, is extracted by rotating disk
Take tower 1 to realize with packed extraction tower 2, specifically include following steps：
1) raw material and extractant are prepared：Raw material is O, O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thio phosphinylidyne
Amine crude product is the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride, and wherein the content of ammonium chloride is 0.56%；Extractant
For pure water；
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product as heavy phase, from the heavy liquid inlet 1.1 of turntable extracting tower
It is continuously injected into；Pure water is continuously injected into from the light phase inlet 1.2 of turntable extracting tower as light phase；In the presence of the rotating disk of rotation,
Heavy phase is constantly settled downwards, light phase continuous rising, after light phase and heavy phase is fully contacted, heavy out of the heavy phase from turntable extracting tower
1.4 flow out, light phase to flow out from the light phase export 1.3 of turntable extracting tower；The heavy phase that turntable extracting tower heavy out 1.4 is flowed out is again
The heavy liquid inlet 2.1 of packed extraction tower is passed through, the light phase inlet 2.2 of packed extraction tower is passed through pure water, in the presence of filler, weight
Mutually constantly settle downwards, light phase continuous rising, after light phase and heavy phase is fully contacted, heavy out of the heavy phase from packed extraction tower
2.4 flow out, and pure water is flowed out from the light phase export 2.3 of packed extraction tower；
3) sample, analysis：Start timing when there are flowing out from the light phase export 2.3 of packed extraction tower, start to receive after 6 hours
Collect from the heavy out 2.4 of packed extraction tower the heavy phase sample for flowing out, test and analyze the content of ammonium chloride in heavy phase sample；Jing is examined
Survey, the content of ammonium chloride is 0.015% in heavy phase sample, reach the standard of the content of ammonium chloride less than 0.1%, start to store from
The heavy phase that the heavy out 2.4 of packed extraction tower flows out.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (4)
1. a kind of O, the continuous tower-type method for washing of O- dimethyl thiophosphoryl amide crude products, it is characterised in that：Comprise the following steps：
1) raw material and extractant are prepared：Raw material is O, and O- dimethyl thiophosphoryl amide crude products, O, O- dimethyl thiophosphoryl amide are thick
Product are the mixture of O, O- dimethyl thiophosphoryl amides and ammonium chloride；Extractant is pure water；
2) continuous washing：O, O- dimethyl thiophosphoryl amide crude product is continuously injected into from the heavy liquid inlet of extraction tower as heavy phase；It is pure
Water is continuously injected into from the light phase inlet of extraction tower as light phase；Heavy phase is constantly settled downwards, light phase continuous rising, light phase and weight
After being mutually fully contacted, heavy phase is flowed out from the heavy out of extraction tower, and the light phase light phase export from extraction tower flows out；
3) sample, analysis：Start timing when the light phase export of extraction tower there are flowing out, start to collect after 4～6 hours from extraction tower
Heavy out flow out heavy phase sample, test and analyze heavy phase sample in ammonium chloride content；The ammonium chloride in heavy phase sample
Content less than after 0.1%, starting to store from heavy out the heavy phase that flows out.
2. O according to claim 1, the continuous tower-type method for washing of O- dimethyl thiophosphoryl amide crude products, its feature exist
In：The extraction tower is turntable extracting tower or packed extraction tower.
3. O according to claim 1, the continuous tower-type method for washing of O- dimethyl thiophosphoryl amide crude products, its feature exist
In：The extraction tower is turntable extracting tower, and the rotating speed for controlling turntable extracting tower is 300～500r/min, controls O, O- dimethyl
The charging rate of thio-phosphamide crude product is 5000～7000kg/h, and the speed for controlling pure water feed is 500～700kg/h, is controlled
The temperature of turntable extracting tower processed be 25～35 DEG C, the turntable extracting tower is high 14～16 meters, turntable extracting tower a diameter of 0.8～
1.0 meters, a diameter of 0.5～0.7 meter of rotating disk, plate spacing is 0.3～0.5 meter, and the number of column plate is 30～40 pieces.
4. O according to claim 1, the continuous tower-type method for washing of O- dimethyl thiophosphoryl amide crude products, its feature exist
In：Step 2) continuous washing combines washing process, i.e. O, O- dimethyl thio phosphinylidynes using turntable extracting tower with packed extraction tower
Amine crude product carries out initial water wash first with turntable extracting tower, and the heavy phase that the heavy out of turntable extracting tower flows out is passed through filler
The heavy liquid inlet of extraction tower is further washed.
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| CN201610969386.6A CN106565774A (en) | 2016-10-27 | 2016-10-27 | Continuous tower-type washing method of O,O-dimethylphosphoroamidothioate crude product |
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| CN109011694A (en) * | 2018-09-21 | 2018-12-18 | 山东泓达生物科技有限公司 | A kind of novel energy-conserving composite stirring extraction tower |
| CN110504489A (en) * | 2019-08-12 | 2019-11-26 | 河南华瑞高新材料有限公司 | A kind of 5V high-voltage lithium nickel manganate anode lithium-ion battery electrolytes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109011694A (en) * | 2018-09-21 | 2018-12-18 | 山东泓达生物科技有限公司 | A kind of novel energy-conserving composite stirring extraction tower |
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