CN211644738U - Waste lye treatment system - Google Patents
Waste lye treatment system Download PDFInfo
- Publication number
- CN211644738U CN211644738U CN202020047750.5U CN202020047750U CN211644738U CN 211644738 U CN211644738 U CN 211644738U CN 202020047750 U CN202020047750 U CN 202020047750U CN 211644738 U CN211644738 U CN 211644738U
- Authority
- CN
- China
- Prior art keywords
- waste
- waste lye
- separator
- pipeline
- regulating valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses a waste lye processing system, include: the inlet of the first mixer is respectively connected with the oxidizing liquid pipeline and the waste alkali liquid pipeline, the oxidizing liquid pipeline is provided with a first regulating valve, and the waste alkali liquid pipeline is provided with a second regulating valve; the inlet of the separator is connected with the outlet of the first mixer, the separator is provided with a first outlet and a second outlet, the first outlet is connected with a waste alkali liquor pipeline through a first discharging pipeline, a third regulating valve is arranged at the position, close to the separator, of the first discharging pipeline, and the third regulating valve is connected with a boundary gauge arranged on the separator; and a feed inlet of the decomposition reaction kettle is connected with the second outlet of the separator through a second discharge pipeline. The utility model discloses utilize the acidic material in a large amount of waste lye neutralization oxidizing liquid that cyclohexanone production process produced to material after the centering and the reaction of packing is separated through the high-efficient filler of separator under alkaline state, improves the utilization ratio of waste lye, improves economic benefits, and the pollution abatement.
Description
Technical Field
The utility model relates to a cyclohexanone waste lye handles technical field, in particular to waste lye processing system.
Background
Cyclohexanone is a raw material for producing synthetic resins and synthetic fibers, and is an excellent industrial solvent. The industrial production of cyclohexanone generally adopts the production process of cyclohexane liquid phase oxidation. The process produces a large amount of waste alkali liquor in the production process, and the alkalinity of the waste alkali liquor is generally controlled to be 3.5-4%. The existing waste alkali liquid treatment method mainly comprises an incineration method, wherein waste alkali is evaporated and concentrated to about 42 percent and is sent to an incineration working section to obtain a soda ash product. However, the incineration method needs to evaporate and concentrate the waste alkali and convey the waste alkali to a special incinerator, so that the cost is high, and secondary pollution is easily caused by smoke generated by incineration.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that prior art exists, the embodiment of the utility model provides a waste lye processing system, a small amount of acid water that the waste lye that can utilize cyclohexanone production to produce the oxidation produces is handled, reduces the consumption of new alkali, improves the utilization ratio of waste lye, reduces the ton ketone and consumes alkali volume, improves economic benefits, simultaneously, can reduce waste lye follow-up processing procedure, further improves waste lye recycle effect to the pollution abatement.
The utility model provides a waste lye processing system for the oxidation waste lye to producing in the cyclohexanone preparation process is handled, include:
the inlet of the first mixer is respectively connected with an oxidizing liquid pipeline and a waste alkali liquid pipeline, a first regulating valve for regulating the flow of the oxidizing liquid is arranged on the oxidizing liquid pipeline, and a second regulating valve for regulating the flow of the waste alkali liquid entering the first mixer is arranged at the position, close to the first mixer, on the waste alkali liquid pipeline;
the inlet of the separator is connected with the outlet of the first mixer, the separator is provided with a first outlet and a second outlet, the first outlet is connected with the waste alkali liquor pipeline through a first discharging pipeline, a third regulating valve is arranged at the position, close to the separator, of the first discharging pipeline, and the third regulating valve is connected with a level meter arranged on the separator;
and a feed inlet of the decomposition reaction kettle is connected with the second outlet of the separator through a second discharge pipeline.
In some embodiments, the waste lye treatment system further comprises a second mixer disposed between the separator and the decomposition reaction vessel, the second mixer being disposed on the second discharge pipe.
In some embodiments, the waste alkali liquid pipeline includes a first waste alkali liquid branch and a second waste alkali liquid branch connected on the first waste alkali liquid branch, the first waste alkali liquid branch is connected with the inlet of the first mixer, the second waste alkali liquid branch is connected with a waste alkali liquid buffer tank, the first waste alkali liquid branch is provided with the second regulating valve, the first discharging pipeline is connected with the second waste alkali liquid branch, a position on the first discharging pipeline, which is close to the second waste alkali liquid branch, is provided with a fourth regulating valve, and the second waste alkali liquid branch is provided with a fifth regulating valve.
In some embodiments, the fifth regulating valve is disposed on the second waste lye branch between the first waste lye branch and the first discharge line.
In some embodiments, a plurality of packing plates arranged in parallel are arranged in the separator, and the packing plates are concave-convex structured packing plates.
The embodiment of the utility model provides a waste lye processing system utilizes the acid material in a large amount of waste lye neutralization oxidation liquid that cyclohexanone production process produced, and separate through the material after the separator high efficiency filler centering and the reaction under alkaline state, separate into organic phase and inorganic looks diphase, organic phase gets into and decomposes further in the reation kettle, inorganic looks returns waste lye pipeline well cycle use, control the proportion of waste lye and oxidation liquid through first governing valve and second governing valve, reduce the consumption of new alkali and guarantee simultaneously that the waste lye after the neutralization treatment is still in alkaline state, improve the utilization ratio of waste lye, reduce the ton ketone and consume alkali volume, improve economic benefits; meanwhile, the neutralization reaction and the separation are carried out by the separator, so that the subsequent treatment procedures of the waste alkali liquor can be reduced, the recycling effect of the waste alkali liquor is further improved, and the pollution is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a waste lye treatment system according to an embodiment of the present invention.
The reference numbers in the figures are as follows:
10-an oxidizing liquid pipeline, 20-a waste alkali liquid pipeline, 201-a first waste alkali liquid branch, 202-a second waste alkali liquid branch, 301-a first discharging pipeline and 302-a second discharging pipeline;
1-a first mixer; 21-a first regulating valve, 22-a second regulating valve, 23-a third regulating valve, 24-a fourth regulating valve and 25-a fifth regulating valve; 3-a separator, 31-a first discharge port, 32-a second discharge port; 4-interface level meter; 5-decomposition reaction kettle; 6-second mixer.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
FIG. 1 shows a schematic structural diagram of a waste lye treatment system according to an embodiment of the present invention. As shown in FIG. 1, the embodiment of the present invention provides a waste lye treatment system for treating the oxidation waste lye generated in the process of preparing cyclohexanone, the waste lye treatment system comprises:
the inlet of the first mixer 1 is respectively connected with an oxidizing liquid pipeline 10 and a waste alkali liquid pipeline 20, the oxidizing liquid pipeline 10 is provided with a first regulating valve 21 for regulating the flow of the oxidizing liquid, and the position, close to the first mixer 1, of the waste alkali liquid pipeline 20 is provided with a second regulating valve 22 for regulating the flow of the waste alkali liquid entering the first mixer 1;
the inlet of the separator 3 is connected with the outlet of the first mixer 1, the separator 3 is provided with a first outlet 31 and a second outlet 32, the first outlet 31 is connected with the waste alkali liquor pipeline 20 through a first discharging pipeline 301, a third regulating valve 23 is arranged at the position, close to the separator 3, of the first discharging pipeline 301, and the third regulating valve 23 is connected with a boundary level meter 4 arranged on the separator 3;
decomposition reactor 5, the inlet of which is connected to second outlet 32 of separator 3 via second outlet line 302.
Specifically, an oxidizing solution containing acidic substances and waste alkaline water are mixed in a first mixer 1 and subjected to neutralization reaction, a mixed material with the acidic substances removed after the neutralization reaction enters a separator 3 for separation, an organic phase and an inorganic phase are separated, the organic phase is mainly the oxidizing solution with alkaline water separated out and enters a decomposition reaction kettle 5 for further reaction; the inorganic phase is mainly separated waste alkaline water which is returned to a waste alkaline liquid pipeline for recycling.
The embodiment of the utility model provides a waste lye processing system utilizes the acid material in a large amount of waste lye neutralization oxidation liquid that cyclohexanone production process produced, and separate through separator 3 high efficiency filler centering under alkaline state and the material after the reaction, separate into organic phase and inorganic looks diphase, organic phase gets into in decomposing reation kettle 5, inorganic looks return waste lye pipeline in-circulation uses, through the proportion of first governing valve 21 and second governing valve 22 control waste lye and oxidation liquid, reduce the consumption of new alkali and guarantee simultaneously that the waste lye after the neutralization treatment still is in alkaline state, improve the utilization ratio of waste lye, reduce the ton ketone and consume alkali volume, improve economic benefits; meanwhile, the neutralization reaction and the separation are carried out by the separator 3, so that the subsequent treatment procedures of the waste alkali liquor can be reduced, the recycling effect of the waste alkali liquor is further improved, and the pollution is reduced.
The separator 3 is a horizontal separator, which is provided with a filler for separation and can separate and remove alkaline water containing alkaline substances in the cyclohexane oxidation liquid and waste alkaline mixed liquid to obtain the cyclohexane oxidation solution with low residual Na < + > content.
In some embodiments, a plurality of packing plates arranged in parallel are disposed in the separator 3, each packing plate is a packing plate having a concave-convex structure, and a plurality of through holes for allowing liquid droplets to pass through are formed in each packing plate. The concave-convex connected packing plates increase the separation area and the separation time of the materials, so that the mixed materials after the neutralization reaction can be fully separated in the separator 3, and the separation effect is improved in the limited space of the separator.
The concave-convex structure of the packing plate can be a corrugated structure and also can be a concave-convex tooth-shaped structure which is connected with each other, the utility model discloses it is not specifically limited. Further, when the concave-convex structure is a concave-convex connected tooth-shaped structure, the concave part and the convex part are in an isosceles trapezoid shape and have a certain inclination, so that the flowing condition of the materials in the separator 3 is changed from slow laminar flow to violent turbulent flow, the collision and aggregation of the materials are aggravated, and the organic phase and the inorganic phase are fully separated.
The boundary level meter 4 is arranged at the position of the separator 3 close to the outlet, the layered boundary level of the organic phase and the inorganic phase of the separator 3 can be monitored in real time, the separation of the separator 3 can be accurately controlled through the cooperation of the boundary level meter 4 and the third regulating valve 23, and the flow of the separated inorganic phase is accurately controlled.
The decomposition reaction kettle 5 can be an oxidation reaction kettle in the oxidation reaction of cyclohexane, namely, the oxidation liquid separated by the separator 3 can be recycled, the recovery utilization rate of the oxidation liquid is improved, and the cost is reduced. The decomposition reaction kettle 5 may also be a separate decomposition reaction kettle 5 arranged behind the cyclohexane oxidation reaction kettle to further perform decomposition reaction, so that cyclohexane which is not fully reacted during cyclohexane oxidation fully reacts with the separated organic phase (oxidation liquid), and the yield of cyclohexanone is improved.
In some embodiments, the cyclohexane oxidation reactor may be a series of multi-stage reactors to sufficiently oxidize cyclohexane to increase the yield of cyclohexanone.
In some embodiments, a gas redistributor is arranged in the cyclohexane oxidation reaction kettle connected with the oxidation liquid pipeline 10, the function of the gas integration redistributor is fully utilized during cyclohexane oxidation, gas-liquid two phases in the reaction kettle are effectively mixed under the condition of not improving the ventilation quantity, the conversion rate of cyclohexane oxidation is improved, and the treatment efficiency of the waste alkali liquid treatment system is further improved.
The waste alkali liquor pipeline 20 comprises a first waste alkali liquor branch 201 and a second waste alkali liquor branch 202 connected to the first waste alkali liquor branch 201, the first waste alkali liquor branch 201 is connected with an inlet of the first mixer 1, the second waste alkali liquor branch 202 is connected with a waste alkali liquor buffer tank, a second regulating valve 22 is arranged on the first waste alkali liquor branch 201, a first discharging pipeline 301 is connected with the second waste alkali liquor branch 202, a fourth regulating valve 24 is arranged at a position, close to the second waste alkali liquor branch 202, on the first discharging pipeline 301, and a fifth regulating valve 25 is arranged on the second waste alkali liquor branch 202.
Further, in this embodiment, the fifth regulating valve 25 is disposed on the second waste lye branch 202 between the first waste lye branch 201 and the first discharge pipeline 301. At this time, the second regulating valve 22, the fourth regulating valve 24 and the fifth regulating valve 25 can be opened simultaneously, so that when the alkalinity of the waste alkali liquor is high, the inorganic phase separated by the separator 3 circularly flows into the first mixer 1 for neutralization reaction, and the utilization rate of the waste alkali liquor is improved. In addition, the fifth regulating valve 25 is disposed on the second waste alkali liquor branch 202 between the first waste alkali liquor branch 201 and the first discharging pipeline 301, so as to prevent the waste alkali liquor from entering the first mixer 1 for re-reaction when the alkalinity of the waste alkali liquor is low, so that the inorganic phase separated by the separator 3 directly flows into the waste alkali liquor buffer tank through the first discharging pipeline 301 and the second waste alkali liquor branch 202, and is convenient for subsequent centralized treatment.
In some embodiments, the spent lye treatment system further comprises a second mixer 6 arranged between the separator 3 and said decomposition reactor 5, the second mixer 6 being arranged on the second discharge conduit 302. The second mixer 6 is a static mixer, and the organic phase materials separated by the separator 3 are fully mixed in the second mixer 6 before entering the decomposition reaction kettle 5, so that the decomposition effect of the organic phase materials in the decomposition reaction kettle 5 can be improved, and the organic resource recycling quality and the organic resource recycling efficiency are improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A waste lye treatment system is used for treating oxidized waste lye generated in the process of preparing cyclohexanone, and is characterized by comprising the following components:
the inlet of the first mixer is respectively connected with an oxidizing liquid pipeline and a waste alkali liquid pipeline, a first regulating valve for regulating the flow of the oxidizing liquid is arranged on the oxidizing liquid pipeline, and a second regulating valve for regulating the flow of the waste alkali liquid entering the first mixer is arranged at the position, close to the first mixer, on the waste alkali liquid pipeline;
the inlet of the separator is connected with the outlet of the first mixer, the separator is provided with a first outlet and a second outlet, the first outlet is connected with the waste alkali liquor pipeline through a first discharging pipeline, a third regulating valve is arranged at the position, close to the separator, of the first discharging pipeline, and the third regulating valve is connected with a level meter arranged on the separator;
and a feed inlet of the decomposition reaction kettle is connected with the second outlet of the separator through a second discharge pipeline.
2. The waste lye treatment system of claim 1 further comprising a second mixer disposed between the separator and the decomposition reactor, the second mixer being disposed on the second discharge pipe.
3. The waste lye processing system of claim 1, wherein the waste lye pipeline comprises a first waste lye branch and a second waste lye branch connected to the first waste lye branch, the first waste lye branch is connected to the inlet of the first mixer, the second waste lye branch is connected to a waste lye buffer tank, the first waste lye branch is provided with the second regulating valve, the first discharging pipeline is connected to the second waste lye branch, the first discharging pipeline is provided with a fourth regulating valve at a position close to the second waste lye branch, and the second waste lye branch is provided with a fifth regulating valve.
4. The waste lye treatment system of claim 3 wherein the fifth adjustment valve is disposed on the second waste lye branch between the first waste lye branch and the first discharge line.
5. The waste lye treatment system of claim 1 wherein there are a plurality of packing sheets disposed in parallel with each other within the separator, wherein the packing sheets are of a concavo-convex configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020047750.5U CN211644738U (en) | 2020-01-10 | 2020-01-10 | Waste lye treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020047750.5U CN211644738U (en) | 2020-01-10 | 2020-01-10 | Waste lye treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211644738U true CN211644738U (en) | 2020-10-09 |
Family
ID=72704517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020047750.5U Active CN211644738U (en) | 2020-01-10 | 2020-01-10 | Waste lye treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211644738U (en) |
-
2020
- 2020-01-10 CN CN202020047750.5U patent/CN211644738U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105585179B (en) | A kind of aluminium section bar plant demoulding devil liquor recovery utilizes method | |
| CN209411984U (en) | A kind of utilization of wastewater resource and salt production device | |
| CN201147664Y (en) | Whole set processing equipment for hydrogenchloride and sulfuric dioxide tail gas | |
| CN102206140B (en) | Method and production system for separating and recovering phenol oil and simultaneously producing sodium sulfite through sodium phenolate acidolysis | |
| CN102010082A (en) | Treatment method for recycling waste dilute sulfuric acid | |
| CN202038998U (en) | Production system for recycling carbolic oil through acidolysis separation of phenol sodium salt and co-producing sodium sulfite | |
| CN211644738U (en) | Waste lye treatment system | |
| CN213446254U (en) | System for calcium sulfate is prepared and hydrochloric acid is retrieved to calcium chloride | |
| CN110408938B (en) | Etching solution recycling process | |
| CN216891247U (en) | Zero discharge system of chlor-alkali device | |
| CN214936760U (en) | Residual oil catalytic thermal cracking and coal-to-olefin waste alkali liquor resource utilization device | |
| CN210215055U (en) | Processing apparatus of sodium sulfate waste liquid in coal tar production process | |
| CN102952115B (en) | Sulfurized isobutylene closed path preparation industrialization method | |
| CN202988883U (en) | Waste acid and waste saline water treatment system combining inorganic synthesis with reverse osmosis | |
| CN107739041A (en) | A kind of system and method for clean manufacturing magnesium hydroxide | |
| CN102030353A (en) | Method for preparing gypsum and simultaneously producing sodium sulfate and hydrochloric acid by distilled ammonia waste liquid of sodium carbonate | |
| CN107746376A (en) | A kind of green battery level iron oxalate manufacture method | |
| CN217221441U (en) | Recovery unit that phenol waste water was recycled | |
| CN113289468A (en) | Treatment device for silicon tetrachloride tail gas | |
| CN217164375U (en) | Accelerator M purification device | |
| CN202410238U (en) | Separation equipment used in process of alkali liquor separation through cyclohexane oxidation liquid | |
| CN102838510B (en) | Method and device for filtering and separating reaction system catalyst for preparing cyclohexanone-oxime | |
| CN220443795U (en) | System for sodium carbonate co-production ammonium sulfate is prepared to sodium sulfate | |
| CN204051406U (en) | PAFC environment-friendly type process units | |
| CN216367926U (en) | Heavy alkylbenzene sulfonic acid sulfonation process production system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |