CN203079763U - Device for performing lye separation on cyclohexane oxidation liquid - Google Patents
Device for performing lye separation on cyclohexane oxidation liquid Download PDFInfo
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- CN203079763U CN203079763U CN 201220748499 CN201220748499U CN203079763U CN 203079763 U CN203079763 U CN 203079763U CN 201220748499 CN201220748499 CN 201220748499 CN 201220748499 U CN201220748499 U CN 201220748499U CN 203079763 U CN203079763 U CN 203079763U
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- cyclohexane oxide
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Abstract
The utility model discloses a device for performing lye separation on cyclohexane oxidation liquid and a process thereof. The device mainly comprises a settling tank, a first liquid-liquid joint phase separator and a second liquid-liquid joint phase separator, wherein the settling tank is used for separating most of alkaline water in the cyclohexane oxidation liquid; the first liquid-liquid joint phase separator is used for preliminarily removing water to obtain the cyclohexane oxidation liquid with the water content of less than 2000ppm; and the second liquid-liquid joint phase separator is used for further removing the water to obtain the cyclohexane oxidation liquid with the water content of less than 100ppm. The device disclosed by the utility model comprehensively considers investment cost and profits and can reduce separation time, equipment investment, material consumption and energy consumption and improve separation precision. When a medium contains a certain quantity of impurities, the device can still operate effectively for a long time, the overhaul rate is low, and the flow rate which is tolerable by the process can fluctuate within 30-110% of a design value.
Description
Technical field
The utility model relates to the chemical substance separation field, and specifically, specially referring to a kind of being used for carries out isolating device of alkali lye and technology thereof to cyclohexane oxide solution.
Background technology
The Cyclohexanone Production process is: benzene is by being hydrogenated into hexanaphthene, hexanaphthene decomposes the back cyclohexane oxidation by atmospheric oxidation again and generates pimelinketone, and the production process of pimelinketone mainly comprises will comprise oxidation, decomposition, salkali waste separations, alkane distillation, saponification, make with extra care, dehydrogenation and recovery of heat and tail gas recycle etc.The oxidation liquid that wherein oxidizing process produced is handled with 3%～5% sodium hydroxide in decomposing pot, generation is the saponification waste lye of main ingredient with water, sodium hydroxide, organic acid sodium salt, organic oligomer, if these waste lyes are brought in the follow-up alkane distillation tower with logistics, concentrating of alkali and organic sodium salt and pimelinketone, make the continuous slagging scorification of reboiler meeting cause the reboiler fouling of alkane distillation tower, thereby cause supplies consumption to increase, and can shorten in the driving cycle of alkane distillation tower significantly.
Extensively adopt gravity settling technology preliminary treatment cyclo-hexane oxidation waste alkali, coalescence technology fine processing cyclohexane oxide solution at present.The gravity settling technology required time is long, facility investment is big and separation efficiency is low, can't effectively organic phase be separated mutually with buck, still has water, alkali about 1% after buck separates.When settlement separate, the residence time must not be less than 12min in the saponification separator for material, and material is not less than 18min at the washing disengaging time.It seems that from actual motion settlement separate effect is bad always.The settlement separate required residence time is longer, and when the process stream amount occurring and increase suddenly, settlement separately can not realize stable outlet separation accuracy for the downstream.
As shown in Figure 1, existing application technology is removed most alkali for using the two-stage slurry tank, separate back buck content and be about 1%, most water is removed by inclined plate settler earlier in water filling washing back, remove the bigger water droplet of particle diameter by micro vortex flow tube again, separate through entering the coarse separation film device after filtering then.This separating technology can reach the separation accuracy of demand.But the efficient of inclined plate settler is lower; Micro vortex flow tube is being used for need providing stable flow field when liquid liquid separates, and during technological fluctuation, separating effect can not guarantee.Strainer and coarse separation film device facility investment height, running maintenance be difficulty.
The utility model content
The utility model is long at the required time that exists in the gravity settling process, facility investment is big and separation efficiency is low, the shortcoming that material consumption and energy consumption are big, provide a kind of being used for that cyclohexane oxide solution is carried out isolating device of alkali lye and technology thereof, in order to reduce disengaging time, reduce facility investment, under the prerequisite that guarantees separation accuracy, reduce material consumption and energy consumption, overcome the deficiency in the conventional art, thereby realized the purpose of this utility model.
The technical problem that the utility model solved can realize by the following technical solutions:
A kind of being used for carried out the isolating device of alkali lye to cyclohexane oxide solution, and it comprises:
One is used for the slurry tank of separating benzene-cyclohexane oxidation liquid buck, and it comprises that slurry tank relief outlet and that a slurry tank input aperture, that is used to import cyclohexane oxide solution and buck mixture is used to discharge buck is used to export the slurry tank delivery port of cyclohexane oxide solution;
The one first liquid liquid associating phase separator that is connected with described slurry tank delivery port is used for tentatively removing moisture to obtain the cyclohexane oxide solution of water-content less than 2000ppm; It comprises that one is connected first delivery port that first relief outlet and that first input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with the slurry tank delivery port;
The one second liquid liquid associating phase separator that is communicated with described first liquid liquid associating phase separator is used for further removing moisture to obtain the cyclohexane oxide solution of water-content less than 100ppm; It comprises that one is connected second delivery port that second relief outlet and that second input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with first delivery port;
Described first liquid liquid associating phase separator and second liquid liquid associating phase separator comprise:
Import parts and rectifier, described import parts and rectifier are arranged at the place, input aperture of first liquid liquid associating phase separator and second liquid liquid associating phase separator, and the cyclohexane oxide solution of importing is played the current stabilization effect;
Filler assembly, described filler assembly is connected with rectifier, is used to catch less drop and its cohesion is bigger drop;
Drop multiplication assembly, described drop multiplication assembly is arranged at the exit of filler assembly, is used for the bigger drop that filler assembly is condensed into is further condensed, and forms stable liquid-liquid two-phase interface.
In an embodiment of the present utility model, the material of described filler assembly is the stainless steel or the PTFE of surface modification; The material of described drop multiplication assembly is the stainless steel or the PVDF of surface modification.
In an embodiment of the present utility model, the internals of described drop multiplication assembly are powder sintered filter core or wedge shape net filter core.
In an embodiment of the present utility model, the separation accuracy of described second liquid liquid associating phase separator is greater than the separation accuracy of first liquid liquid associating phase separator.
A kind of being used for carried out the alkali lye separation processes to cyclohexane oxide solution, and it comprises the steps:
1) mixture with cyclohexane oxide solution and buck imports slurry tank by the slurry tank input aperture, go out buck in the mixture by gravity settling separation, isolated buck is discharged by the slurry tank relief outlet, cyclohexane oxide solution remaining in the slurry tank imports first liquid liquid associating phase separator by the slurry tank delivery port again after the water filling washing is with reduction sodium ions content wherein;
2) by first liquid liquid associating phase separator the isolated mixture of step 1) is carried out just dividing, obtain the cyclohexane oxide solution of water-content less than 2000ppm; The steps include: to unite the import parts at place, phase separator input aperture and the dual function of rectifier by being arranged at the first liquid liquid, guarantee that fluid flows to filler assembly uniformly with stable flow velocity, catch than small droplets in filler assembly inside then, coacervation is left filler assembly after becoming big drop, in drop multiplication assembly, be agglomerated into bigger drop at last, and then form stable liquid-liquid two-phase interface; Isolated moisture is discharged from first relief outlet, and isolated cyclohexane oxide solution enters second liquid liquid associating phase separator;
3) by first liquid liquid associating phase separator to step 2) isolated mixture carries out essence branch, obtains the cyclohexane oxide solution of water-content less than 100ppm; The steps include: to unite the import parts at place, phase separator input aperture and the dual function of rectifier by being arranged at the second liquid liquid, guarantee that fluid flows to filler assembly uniformly with stable flow velocity, catch than small droplets in filler assembly inside then, coacervation is left filler assembly after becoming big drop, in drop multiplication assembly, be agglomerated into bigger drop at last, and then forming stable liquid-liquid two-phase interface, isolated moisture is discharged from second relief outlet.
The beneficial effects of the utility model are: taken all factors into consideration cost of investment and income, reduced disengaging time, facility investment and material consumption energy consumption, improved separation accuracy.When containing a certain amount of impurity in medium, also can permanently effectively move, the maintenance rate is low, and the tolerant flow of this technology can be in 30 ~ 110% fluctuations of design load.
Description of drawings
Fig. 1 is the process flow diagram of prior art.
Fig. 2 is the process flow diagram of the isolating device of alkali lye described in the utility model.
Embodiment
For technique means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As depicted in figs. 1 and 2, a kind of being used for described in the utility model carried out the isolating device of alkali lye to cyclohexane oxide solution, and it mainly comprises slurry tank, first liquid liquid associating phase separator and second liquid liquid associating phase separator.
Wherein, slurry tank is used for most of buck of separating benzene-cyclohexane oxidation liquid, and it comprises that slurry tank relief outlet and that a slurry tank input aperture, that is used to import cyclohexane oxide solution and buck mixture is used to discharge buck is used to export the slurry tank delivery port of cyclohexane oxide solution.
The one first liquid liquid associating phase separator that is connected with described slurry tank delivery port is used for tentatively removing moisture to obtain the cyclohexane oxide solution of water-content less than 2000ppm; It comprises that one is connected first delivery port that first relief outlet and that first input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with the slurry tank delivery port;
The one second liquid liquid associating phase separator that is communicated with described first liquid liquid associating phase separator is used for further removing moisture to obtain the cyclohexane oxide solution of water-content less than 100ppm; It comprises that one is connected second delivery port that second relief outlet and that second input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with first delivery port;
First liquid liquid associating phase separator and second liquid liquid associating phase separator comprise import parts and rectifier, filler assembly and drop multiplication assembly.Import parts and rectifier are arranged at the place, input aperture of first liquid liquid associating phase separator and second liquid liquid associating phase separator, by both dual function the cyclohexane oxide solution of input are played the current stabilization effect; Filler assembly is connected with rectifier, is used to catch less drop and its cohesion is bigger drop; Drop multiplication assembly is arranged at the exit of filler assembly, is used for the bigger drop that filler assembly is condensed into is further condensed, and forms stable liquid-liquid two-phase interface.
The material of filler assembly can be the stainless steel or the PTFE of surface modification; The material of drop multiplication assembly can be the stainless steel or the PVDF of surface modification.
The internals of drop multiplication assembly can be powder sintered filter core or wedge shape net filter core.
Device under operating mode service temperature and pressure, the pressure drop＜5kPa of equipment, anti-a small amount of fine particle solid, but serialization running.
Especially it should be noted that the separation accuracy of the separation accuracy of second liquid liquid associating phase separator, to guarantee just branch and smart effect of dividing greater than first liquid liquid associating phase separator.
A kind of being used for carried out the alkali lye separation processes to cyclohexane oxide solution, and it comprises the steps:
1) mixture with cyclohexane oxide solution and buck imports slurry tank by the slurry tank input aperture, go out buck in the mixture by gravity settling separation, isolated buck is discharged by the slurry tank relief outlet, cyclohexane oxide solution remaining in the slurry tank imports first liquid liquid associating phase separator by the slurry tank delivery port again after the water filling washing is with reduction sodium ions content wherein;
2) by first liquid liquid associating phase separator the isolated mixture of step 1) is carried out just dividing, obtain the cyclohexane oxide solution of water-content less than 2000ppm; The steps include: to unite the import parts at place, phase separator input aperture and the dual function of rectifier by being arranged at the first liquid liquid, guarantee that fluid flows to filler assembly uniformly with stable flow velocity, catch than small droplets in filler assembly inside then, coacervation is left filler assembly after becoming big drop, in drop multiplication assembly, be agglomerated into bigger drop at last, and then form stable liquid-liquid two-phase interface; Isolated moisture is discharged from first relief outlet, and isolated cyclohexane oxide solution enters second liquid liquid associating phase separator;
3) by first liquid liquid associating phase separator to step 2) isolated mixture carries out essence branch, obtains the cyclohexane oxide solution of water-content less than 100ppm; The steps include: to unite the import parts at place, phase separator input aperture and the dual function of rectifier by being arranged at the second liquid liquid, guarantee that fluid flows to filler assembly uniformly with stable flow velocity, catch than small droplets in filler assembly inside then, coacervation is left filler assembly after becoming big drop, in drop multiplication assembly, be agglomerated into bigger drop at last, and then forming stable liquid-liquid two-phase interface, isolated moisture is discharged from second relief outlet.
Former process program: the mixture of pimelinketone and buck enters settlement separate jar, and initial gross separation goes out most of buck; Enter the settlement separate jar of secondary again and isolate a small amount of buck of residue; Isolating pimelinketone water filling washing is to reduce sodium ions content in the material, and the mixture after the water filling enters inclined plate settler and carries out initial gross separation, and separating the back water-content is about 3000ppm; Carry out secondary separation through little eddy flow again, the water-content after the separation is about 800ppm, enters follow-up workshop section after further dewatering by coalescent+separatory membrane device behind the material filtering that contains less water after the separation, and separating the back water-content is about 200ppm.
Exemplary application 1: the mixture of pimelinketone and buck enters settlement separate jar, and initial gross separation goes out most of buck, enters the settlement separate jar of secondary again and isolates a small amount of buck of residue; Isolating pimelinketone water filling washing is to reduce sodium ions content in the material, and the mixture after the water filling enters the AFMP phase separator and carries out primary separation, separates the back water-content for allowing the import water-content to fluctuate about 1%-3% less than 2000ppm(); Can reach separation requirement after separating through an AFMP device again and enter follow-up workshop section, not dissolve water-content after the separation less than 100ppm.
Investment more economizes, and has solved the mass flow fluctuation simultaneously and the content fluctuation causes the unsteady influence of cyclonic separation precision, and the fluid head that has reduced about about 2-3bar of swirler and coalescent+separatory membrane device loses.And removed of the requirement of coalescent+separatory membrane equipment from, guaranteed the equipment long-term operation, simultaneously the operation maintenance cost of Jiang Diing solid content.
Exemplary application 2: the mixture of pimelinketone and buck enters settlement separate jar, initial gross separation goes out most of buck, the direct water filling washing of isolating pimelinketone is to reduce sodium ions content in the material, and the mixture after the water filling enters the AFMP device and carries out primary separation, and separating the back water-content is 2000ppm; Can reach requirement after separating through an AFMP device again and enter follow-up workshop section, not dissolving water-content after the separation is 100ppm.
The utility model investment is optimum, has solved the mass flow fluctuation simultaneously and the content fluctuation causes the unsteady influence of cyclonic separation precision, and the fluid head that has reduced about about 2-3bar of swirler and coalescent+separatory membrane device loses.And removed of the requirement of coalescent+separatory membrane equipment from, guaranteed the equipment long-term operation, simultaneously the operation maintenance cost of Jiang Diing solid content.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. one kind is used for cyclohexane oxide solution is carried out the isolating device of alkali lye, it is characterized in that it comprises:
One is used for the slurry tank of separating benzene-cyclohexane oxidation liquid buck, and it comprises that slurry tank relief outlet and that a slurry tank input aperture, that is used to import oxidation liquid and buck mixture is used to discharge buck is used to export the slurry tank delivery port of cyclohexane oxide solution;
The one first liquid liquid associating phase separator that is connected with described slurry tank delivery port is used for tentatively removing moisture to obtain the cyclohexane oxide solution of water-content less than 2000ppm; It comprises that one is connected first delivery port that first relief outlet and that first input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with the slurry tank delivery port;
The one second liquid liquid associating phase separator that is communicated with described first liquid liquid associating phase separator is used for further removing moisture to obtain the cyclohexane oxide solution of water-content less than 100ppm; It comprises that one is connected second delivery port that second relief outlet and that second input aperture, that is used to import cyclohexane oxide solution is used to discharge moisture is used to export cyclohexane oxide solution with first delivery port;
Described first liquid liquid associating phase separator and second liquid liquid associating phase separator comprise:
Import parts and rectifier, described import parts and rectifier are arranged at the place, input aperture of first liquid liquid associating phase separator and second liquid liquid associating phase separator, and the cyclohexane oxide solution of importing is played the current stabilization effect;
Filler assembly, described filler assembly is connected with rectifier, is used to catch less drop and its cohesion is bigger drop;
Drop multiplication assembly, described drop multiplication assembly is arranged at the exit of filler assembly, is used for the bigger drop that filler assembly is condensed into is further condensed, and forms stable liquid-liquid two-phase interface.
2. a kind of being used for according to claim 1 carried out the isolating device of alkali lye to cyclohexane oxide solution, it is characterized in that, the material of described filler assembly is the stainless steel or the PTFE of surface modification; The material of described drop multiplication assembly is the stainless steel or the PVDF of surface modification.
3. a kind of being used for according to claim 1 carried out the isolating device of alkali lye to cyclohexane oxide solution, it is characterized in that, the internals of described drop multiplication assembly are powder sintered filter core or wedge shape net filter core.
4. a kind of being used for according to claim 1 carried out the isolating device of alkali lye to cyclohexane oxide solution, it is characterized in that, the separation accuracy of described second liquid liquid associating phase separator is greater than the separation accuracy of first liquid liquid associating phase separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748499 CN203079763U (en) | 2012-12-29 | 2012-12-29 | Device for performing lye separation on cyclohexane oxidation liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748499 CN203079763U (en) | 2012-12-29 | 2012-12-29 | Device for performing lye separation on cyclohexane oxidation liquid |
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| CN203079763U true CN203079763U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220748499 Expired - Lifetime CN203079763U (en) | 2012-12-29 | 2012-12-29 | Device for performing lye separation on cyclohexane oxidation liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055546A (en) * | 2012-12-29 | 2013-04-24 | 上海安赐机械设备有限公司 | Device and process for carrying out alkali liquor separation on cyclohexane oxidation liquid |
| CN111116341A (en) * | 2019-12-12 | 2020-05-08 | 上海灿越化工科技有限公司 | Method and device for deeply removing impurities in oxidizing liquid |
-
2012
- 2012-12-29 CN CN 201220748499 patent/CN203079763U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055546A (en) * | 2012-12-29 | 2013-04-24 | 上海安赐机械设备有限公司 | Device and process for carrying out alkali liquor separation on cyclohexane oxidation liquid |
| CN103055546B (en) * | 2012-12-29 | 2015-02-25 | 上海安赐机械设备有限公司 | Device and process for carrying out alkali liquor separation on cyclohexane oxidation liquid |
| CN111116341A (en) * | 2019-12-12 | 2020-05-08 | 上海灿越化工科技有限公司 | Method and device for deeply removing impurities in oxidizing liquid |
| CN111116341B (en) * | 2019-12-12 | 2023-04-07 | 上海灿越化工科技有限公司 | Method and device for deeply removing impurities in oxidation liquid |
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Address after: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee after: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee before: SHANGHAI ANHORN MECHANICAL EQUIPMENT Co.,Ltd. |
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Granted publication date: 20130724 |