CN209967882U - Retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production - Google Patents
Retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production Download PDFInfo
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- CN209967882U CN209967882U CN201920617597.2U CN201920617597U CN209967882U CN 209967882 U CN209967882 U CN 209967882U CN 201920617597 U CN201920617597 U CN 201920617597U CN 209967882 U CN209967882 U CN 209967882U
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Abstract
The utility model relates to the technical field of dinaphthol production, and discloses a device for recovering sodium naphthalene sulfonate filtrate in dinaphthol production; solves the problems of low recovery efficiency and difficult operation of the sodium naphthalenesulfonate in the traditional process; the filter comprises a filtrate cooling tank, a self-cleaning filter, a slurry tank and a membrane filter press, wherein a discharge port of the slurry tank is connected with a feed port of the membrane filter press through a first pipeline, the membrane filter press is connected with the filtrate cooling tank, a discharge port of the filtrate cooling tank is connected with the self-cleaning filter through a second pipeline, and a filtrate outlet of the self-cleaning filter is connected with the feed port of the slurry tank; the whole device has high automation degree, so that the recovery efficiency of the sodium naphthalenesulfonate is obviously improved; meanwhile, manual cleaning of sodium naphthalenesulfonate precipitate is avoided, and the labor intensity is reduced; the sodium naphthalenesulfonate is recovered, so that the utilization rate of raw materials is improved, and conditions are created for subsequent batching.
Description
Technical Field
The utility model relates to a dinaphthol production technical field especially relates to a retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production.
Background
Traditional dinaphthol apparatus for producing mainly comprises units such as sulfonation, hydrolysis, naphthalene blowing, neutralization, cooling, filtration, alkali fusion, dilution, acidizing, boiling, drying, distillation, and in the neutralization reaction process, neutralization solution directly carries out hot filter pressing through not cooling, and sodium naphthalenesulfonate content is high in the filtrate, if do not handle and directly prepare sodium sulfite solution, then leads to sodium sulfite to be difficult to dissolve in sodium naphthalenesulfonate filtrate. Therefore, the content of sodium naphthalenesulfonate in the filtrate must be reduced to facilitate the preparation of sodium sulfite solution.
The traditional method is that filtrate is directly cooled in an iron-controlling box, sodium naphthalenesulfonate naturally precipitates, and is manually cleaned after the sodium naphthalenesulfonate precipitates to a certain degree, so that the labor intensity is high, and the efficiency is low. Because hot filtration filtrate has a lot of solutes, the process is not feasible, and a new process is urgently needed to solve the problem.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art exists not enough, provides an degree of automation height, and the sodium naphthalenesulfonate retrieves the effectual device of retrieving sodium naphthalenesulfonate filtrating in the production of two naphthol again of recovering, has solved that traditional technology retrieves sodium naphthalenesulfonate in-process recovery efficiency low, and intensity of labour is big, the abominable problem of environment.
The utility model discloses a realize through following technical scheme.
The utility model provides a retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production, includes filtrating cooling tank, automatically cleaning filter, slurry tank and membrane filter press, slurry tank's discharge gate through first pipeline with membrane filter press feed inlet be connected, membrane filter press's discharge gate with filtrating cooling tank's feed inlet is connected, filtrating cooling tank's discharge gate through the second pipeline with automatically cleaning filter be connected, automatically cleaning filter's strain thick liquid export with slurry tank's feed inlet be connected, first pipeline on be provided with the stuff pump, the second pipeline on be provided with the stuff pump.
Furthermore, a feed inlet of the slurry tank is also connected with a filtrate pipeline from a neutralization liquid tank.
Further, a filtrate outlet of the self-cleaning filter is connected with a batching kettle.
Sodium naphthalenesulfonate suspension from the neutralization tank enters a slurry tank, and then is conveyed to a membrane filter press by a slurry pump for primary pressure, the obtained sodium naphthalenesulfonate filter cake is recovered, the rest filtrate enters a filtrate cooling tank and is cooled to 50-60 ℃ from the filtrate cooling tank, the cooled filtrate enters a self-cleaning filter through a filtrate pump, after the pressure difference reaches a certain degree, a scraper in the self-cleaning filter scrapes the slurry and sends the slurry into the slurry tank to enter the device again for treatment, the sodium naphthalenesulfonate contained in the clean filtrate from the self-cleaning filter is obviously reduced, and the clean filtrate enters a batching kettle to prepare a sodium sulfite solution.
The utility model discloses produced beneficial effect does for prior art.
The utility model has compact equipment, adopts the steps of cooling, filtering and filter pressing, effectively removes the sodium naphthalenesulfonate, and simultaneously, the sodium naphthalenesulfonate can be more thoroughly removed by repeatedly circulating the filtrate, the automation degree of the whole device is high, and the recovery efficiency of the sodium naphthalenesulfonate is obviously improved; meanwhile, manual cleaning of sodium naphthalenesulfonate precipitate is avoided, and the labor intensity is reduced; the sodium naphthalenesulfonate is recovered, so that the utilization rate of raw materials is improved, and conditions are created for subsequent batching.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is filtrating cooling tank, 2 is the automatically cleaning filter, 3 is the stock solution jar, 4 is the membrane pressure filter, 5 is first pipeline, 6 is the second pipeline, 7 is the stuff pump, 8 is the filtrate pump, 9 is the filtrate pipeline, 10 is the batching cauldron.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, is a device for recycling sodium naphthalenesulfonate filtrating in dinaphthol production, including filtrating cooling tank 1, self-cleaning filter 2, slurry tank 3 and membrane filter press 4, the discharge gate of slurry tank 3 is connected with the feed inlet of membrane filter press 4 through first pipeline 5, the discharge gate of membrane filter press 4 is connected with the feed inlet of filtrating cooling tank 1, the discharge gate of filtrating cooling tank 1 is connected with self-cleaning filter 2 through second pipeline 6, the filtrate outlet of self-cleaning filter 2 is connected with the feed inlet of slurry tank 3, the first pipeline 5 is provided with slurry pump 7, the second pipeline 6 is provided with filtrate pump 8. The feed inlet of the slurry tank 3 is also connected with a filtrate pipeline 9 from a neutralization liquid tank, and the filtrate outlet of the self-cleaning filter 2 is connected with an ingredient kettle 10.
Sodium naphthalenesulfonate suspension from the neutralization tank enters a slurry tank 3 through a filter liquor pipeline 9, then is conveyed to a membrane filter press 4 through a slurry pump 7 for primary pressure, the obtained sodium naphthalenesulfonate filter cake is recovered, the rest filtrate enters a filtrate cooling tank 1 and is cooled to 50-60 ℃ from the filtrate cooling tank 1, the cooled filtrate enters a self-cleaning filter 2 through a filtrate pump 8, when the pressure difference reaches a certain degree, a scraper in the self-cleaning filter 2 scrapes the slurry and conveys the slurry into the slurry tank 3 to enter the subsequent membrane filter press 4, filtrate cooling tank 1 and self-cleaning filter 2 of the device again for treatment, the sodium naphthalenesulfonate contained in the clean filtrate from the self-cleaning filter 2 is obviously reduced, and the clean filtrate enters a batching kettle 10 to prepare a sodium sulfite solution.
The device is compact in whole, the steps of cooling, filtering and filter pressing are combined, the sodium naphthalenesulfonate is effectively removed, meanwhile, the sodium naphthalenesulfonate is more thoroughly removed through repeated circulation of the filtrate, the automation degree of the whole device is high, and the recovery efficiency of the sodium naphthalenesulfonate is remarkably improved; meanwhile, manual cleaning of sodium naphthalenesulfonate precipitate is avoided, and the labor intensity is reduced; the sodium naphthalenesulfonate is recovered, so that the utilization rate of raw materials is improved, and conditions are created for subsequent batching.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (3)
1. A device for recovering sodium naphthalenesulfonate filtrate in dinaphthol production is characterized by comprising a filtrate cooling tank (1), a self-cleaning filter (2), a slurry tank (3) and a membrane filter press (4), the discharge hole of the slurry tank (3) is connected with the feed hole of the membrane filter press (4) through a first pipeline (5), the discharge hole of the membrane filter press (4) is connected with the feed inlet of the filtrate cooling tank (1), the discharge hole of the filtrate cooling tank (1) is connected with the self-cleaning filter (2) through a second pipeline (6), the slurry filtering outlet of the self-cleaning filter (2) is connected with the feed inlet of the slurry tank (3), the first pipeline (5) is provided with a slurry pump (7), and the second pipeline (6) is provided with a filtrate pump (8).
2. The device for recovering sodium naphthalenesulfonate filtrate in dinaphthol production according to claim 1, characterized in that the feed inlet of the slurry tank (3) is also connected with a filtrate pipeline (9) from a neutralization tank.
3. The device for recovering sodium naphthalenesulfonate filtrate in dinaphthol production according to claim 1, wherein a filtrate outlet of the self-cleaning filter (2) is connected with a batching kettle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617597.2U CN209967882U (en) | 2019-04-30 | 2019-04-30 | Retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617597.2U CN209967882U (en) | 2019-04-30 | 2019-04-30 | Retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production |
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| Publication Number | Publication Date |
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| CN209967882U true CN209967882U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920617597.2U Active CN209967882U (en) | 2019-04-30 | 2019-04-30 | Retrieve device of sodium naphthalene sulfonate filtrating in dinaphthol production |
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| CN (1) | CN209967882U (en) |
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2019
- 2019-04-30 CN CN201920617597.2U patent/CN209967882U/en active Active
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