CN204058306U - A kind of toluene oxime solution washing device - Google Patents
A kind of toluene oxime solution washing device Download PDFInfo
- Publication number
- CN204058306U CN204058306U CN201420483773.5U CN201420483773U CN204058306U CN 204058306 U CN204058306 U CN 204058306U CN 201420483773 U CN201420483773 U CN 201420483773U CN 204058306 U CN204058306 U CN 204058306U
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- CN
- China
- Prior art keywords
- washer
- toluene
- toluene oxime
- coalescer
- oxime solution
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- 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.)
- Expired - Fee Related
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Abstract
A kind of toluene oxime solution washing device, comprise washing separator and washer, be connected with washer again after washing separator one end via line pipeline is connected with fresh feed pump, washer top via line pipeline is connected with coalescer, coalescer via line pipeline is connected with toluene oxime storage tank, and the cable tubing bottom washer is connected with wastewater treatment equipment after converging with the cable tubing bottom coalescer again.Adopt said apparatus, significantly can reduce the de-mineralized water usage quantity of initial water wash, reduce production cost, alleviate wastewater treatment load simultaneously; Toluene oxime solution impurity content after washer alkali cleaning is low, effectively can improve the quality of finished product cyclohexanone-oxime.
Description
Technical field
The utility model relates to a kind of device of the toluene oxime solution washing for cyclohexanone oxamidinating technique.
Background technology
Cyclohexanone-oxime is the important intermediate of producing hexanolactam, and the general cyclohexanone oxamidinating legal system that adopts is standby, and obtains pure oxime, purity>=99.95%wt, colourity≤5 through solvent recuperation, toluene extraction, washing, toluene oxime refining spearation
0h.
Traditional toluene oxime washing unit, namely carries out circulating water wash in washing separator, removing toluene mutually in soluble inorganic, organic impurity, reduce toluene phase conductance; Aqueous phase enters wastewater treatment after extraction tower reextraction part oxime.The deficiency of this technique is that the washing water yield is large, and toluene mutually in impurity removal limited in one's ability, as low in pimelinketone, hexalin removal efficiency to constituent part, distillation system removal of impurities difficulty in rear portion thus can be caused to strengthen, the situation generation that finished product cyclohexanone-oxime is of low quality.
In sum, for improving finished product cyclohexanone-oxime quality, it is very necessary for seeking a kind of more efficient method for removing impurities in ion operation.
Summary of the invention
The purpose of this utility model is the deficiency for existing ion operation, improves water washing device and technique, has invented a kind of device of new toluene oxime solution washing.
For realizing the purpose of this utility model, remaining the major equipments such as former washing separator, coalescer at washing step, adding the equipment such as washer fresh feed pump and washer.
Be specially:
A kind of toluene oxime solution washing device, comprises washing separator and washer, washing separator one end warp
Be connected with washer again after road pipeline is connected with fresh feed pump, washer top via line pipeline is connected with coalescer, coalescer via line pipeline is connected with toluene oxime storage tank, and the cable tubing bottom washer is connected with wastewater treatment equipment after converging with the cable tubing bottom coalescer again.Washings is that heavy phase is entered by washer top, and toluene oxime solution is for gently to be entered by washer bottom, and light, heavy two-phase counter current contact mass transfer in washer removes the impurity in toluene oxime.
Washing separator the other end via line pipeline is connected with mixing tank, mixing tank front end is provided with de-mineralized water carrier pipe and toluene oxime solution carrier pipe, de-mineralized water carrier pipe and toluene oxime solution carrier pipe are separately installed with de-salted water flow and take into account toluene oxime solution stream gauge, for accurate-metering proportioning.
Washer upper end is also provided with washings carrier pipe, washings carrier pipe is provided with flow of liquor gauge.
The processing step adopting the device of above-mentioned toluene oxime solution washing to carry out is as follows:
1, toluene oxime solution and de-mineralized water enter washing separator by mixing tank Forced Mixing in proportion, carry out initial water wash.
2, after initial water wash, toluene oxime solution squeezes into washer bottom by washer fresh feed pump, with washings, toluene oxime solution is washed further: washings and toluene oxime solution enter strengthening washer in proportion, washings from top to bottom, toluene oxime solution from bottom to top, counter current contact carries out mass transfer removing impurities;
3, toluene oxime solution is from the overflow of washer top in coalescer, enters toluene oxime storage tank after removing a small amount of water in toluene oxime solution.
4, the waste liquid in washer and coalescer after washing is sent to wastewater treatment operation from bottom.
The volume proportion of oxime solution is: 1:5 ~ 1:20(V/V).
Washings is the sodium hydroxide solution of concentration 0.1 ~ 50%wt.
The volume proportion of washings and toluene oxime solution is: 1:10 ~ 1:100(V/V).
The device of a kind of toluene oxime solution washing provided by the utility model, has following beneficial effect:
1, the raw material utilizing de-mineralized water, sodium hydroxide solution etc. cheap and easy to get, with low cost;
2, significantly can reduce the de-mineralized water usage quantity of initial water wash after newly-increased washer, reduce production cost, alleviate wastewater treatment load simultaneously;
3, the toluene oxime solution impurity content after washer alkali cleaning is low, effectively can improve the quality of finished product cyclohexanone-oxime.
Accompanying drawing explanation
Fig. 1 is a kind of apparatus structure schematic diagram of toluene oxime solution washing, 1. washes separator, 2. fresh feed pump, 3. washer, 4. coalescer, 5. toluene oxime storage tank, 6. mixing tank, 7. de-salted water under meter, 8. toluene oxime solution stream gauge, 9. flow of liquor gauge.
Embodiment
embodiment 1
A kind of toluene oxime solution washing device, comprise washing separator 1 and washer 3, be connected with washer 3 again after washing separator 1 one end via line pipeline is connected with fresh feed pump 2, washer 3 top via line pipeline is connected with coalescer 4, coalescer 4 via line pipeline is connected with toluene oxime storage tank 5, and the cable tubing bottom washer 3 is connected with wastewater treatment equipment after converging with the cable tubing bottom coalescer 4 again.
Washing separator 1 the other end via line pipeline is connected with mixing tank 6, and mixing tank 6 front end is provided with de-mineralized water carrier pipe and toluene oxime solution carrier pipe, and de-mineralized water carrier pipe and toluene oxime solution carrier pipe are connected with mixing tank after converging.De-mineralized water carrier pipe and toluene oxime solution carrier pipe are separately installed with de-salted water under meter 7 and toluene oxime solution stream gauge 8.
Washer 3 upper end is also provided with washings carrier pipe, washings carrier pipe is provided with flow of liquor gauge 9.
embodiment 2
A kind of technique of toluene oxime solution washing, toluene oxime solution and de-mineralized water are evenly entered by mixing tank 6 Forced Mixing and wash separator 1 under certain proportioning, washing separator 1 is connected with fresh feed pump 2, fresh feed pump 2 is connected through carrier pipe with bottom washer 3, washer 3 top is connected through carrier pipe with coalescer 4, and coalescer 4 is connected through carrier pipe with toluene oxime storage tank 5.
Wherein washings is that heavy phase is entered by washer 3 top, toluene oxime solution is for gently to be entered by washer 3 bottom, washings and toluene oxime under certain proportioning in washer 3 counter current contact mass transfer remove impurity in toluene oxime, the waste water in washer 3 and coalescer 4 is connected to Waste Water Treatment by pipeline.
Claims (3)
1. a toluene oxime solution washing device, comprise washing separator (1) and washer (3), it is characterized in that: be connected with washer (3) again after washing separator (1) one end via line pipeline is connected with fresh feed pump (2), washer (3) top via line pipeline is connected with coalescer (4), coalescer (4) via line pipeline is connected with toluene oxime storage tank (5), and the cable tubing bottom washer (3) is connected with wastewater treatment equipment after converging with the cable tubing of coalescer (4) bottom again.
2. toluene oxime solution washing device according to claim 1, it is characterized in that: washing separator (1) the other end via line pipeline is connected with mixing tank (6), mixing tank (6) front end is provided with de-mineralized water carrier pipe and toluene oxime solution carrier pipe, and de-mineralized water carrier pipe and toluene oxime solution carrier pipe are separately installed with de-salted water under meter (7) and toluene oxime solution stream gauge (8).
3. toluene oxime solution washing device according to claim 1, is characterized in that: washer (3) upper end is also provided with washings carrier pipe, washings carrier pipe is provided with flow of liquor gauge (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483773.5U CN204058306U (en) | 2014-08-26 | 2014-08-26 | A kind of toluene oxime solution washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483773.5U CN204058306U (en) | 2014-08-26 | 2014-08-26 | A kind of toluene oxime solution washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204058306U true CN204058306U (en) | 2014-12-31 |
Family
ID=52199858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420483773.5U Expired - Fee Related CN204058306U (en) | 2014-08-26 | 2014-08-26 | A kind of toluene oxime solution washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204058306U (en) |
-
2014
- 2014-08-26 CN CN201420483773.5U patent/CN204058306U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20200826 |