CN219023264U - Naphthol crude decoking refining device - Google Patents
Naphthol crude decoking refining device Download PDFInfo
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- CN219023264U CN219023264U CN202223246742.1U CN202223246742U CN219023264U CN 219023264 U CN219023264 U CN 219023264U CN 202223246742 U CN202223246742 U CN 202223246742U CN 219023264 U CN219023264 U CN 219023264U
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- film evaporator
- naphthol
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- liquid separator
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Abstract
The utility model discloses a decoking refining device for a naphthol crude product, belonging to the technical field of dinaphthol production; the device comprises a falling film evaporator, a gas-liquid separator and a wiped film evaporator; the falling film evaporator is connected with a naphthol crude product feeding pipeline; the gas outlet of the falling film evaporator is connected with the gas-liquid separator through a pipeline; the liquid phase outlet of the gas-liquid separator is connected with the falling film evaporator through a return pipeline; the overflow port of the falling film evaporator is connected with the film scraping evaporator through an overflow liquid pipeline; the gas outlet of the wiped film evaporator is connected with the gas-liquid separator through a pipeline; the bottom of the wiped film evaporator is connected with a tar delivery pipeline; the utility model can continuously remove tar in the naphthol crude product, and compared with the prior art that a distillation kettle is used for intermittently discharging tar residue, the production efficiency is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of dinaphthol production, and particularly relates to a decoking and refining device for a naphthol crude product.
Background
Binaphthol is a white flake or white powder chemical commonly used in the manufacture of tobias acid, butyric acid, beta-naphthol-3-carboxylic acid and azo dyes. The existing production and neutralization process of the dinaphthol comprises the steps of adding naphthalene sulfonic acid into a neutralization kettle, and then adding preheated Na 2 SO 3 Solution, na 2 SO 3 Controlling the temperature of the solution at 95-100 ℃, adding Na 2 SO 3 The negative pressure in the neutralization kettle is kept for 40-50 minutes by controlling the feeding speed, and the sulfur dioxide gas generated by neutralization is sent to an acidification kettle by utilizing the negative pressure. The prepared dinaphthol is doped with tar and needs to be refined along with dinaphthol.
At present, a distillation kettle is used for separating and producing the dinaphthol, naphthol products are distilled out in sequence according to different boiling points, and finally residual tar at the bottom of the distillation kettle is discharged.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides a device for decoking and refining naphthol crude products, so as to realize continuous tar removal from the naphthol crude products and improve the production efficiency.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme.
A decoking refining device for naphthol crude products comprises a falling film evaporator, a gas-liquid separator and a wiped film evaporator; the falling film evaporator is connected with a naphthol crude product feeding pipeline; the gas outlet of the falling film evaporator is connected with the gas-liquid separator through a pipeline; the liquid phase outlet of the gas-liquid separator is connected with the falling film evaporator through a return pipeline; the overflow port of the falling film evaporator is connected with the film scraping evaporator through an overflow liquid pipeline; the gas outlet of the wiped film evaporator is connected with the gas-liquid separator through a pipeline; the bottom of the wiped film evaporator is connected with a tar delivery pipeline.
Further, the return line is provided with a falling film circulating pump.
Further, a gas outlet at the top of the gas-liquid separator is connected with a refined naphthol delivery pipeline.
Further, a flow valve is arranged on the naphthol crude product feeding pipeline.
Further, the return line is provided with a control valve.
Further, a liquid phase outlet of the gas-liquid separator is arranged at the bottom of the gas-liquid separator.
Further, the naphthol crude product feeding pipeline is connected to the top of the falling film evaporator.
Compared with the prior art, the utility model has the following beneficial effects:
the device of the utility model firstly sends the crude naphthol into the falling film evaporator, after heating, the naphthol is evaporated into gas phase, the gas phase and the liquid phase are sent into the gas-liquid separator, and the non-evaporated liquid phase is sent into the falling film evaporator by the forced circulation of the falling film circulating pump.
When the liquid at the bottom of the falling film evaporator reaches an overflow port, the overflow liquid enters the wiped film evaporator, and after being further heated, a small amount of naphthol in the liquid becomes gas, and the gas enters the gas-liquid separator, and the unvaporized liquid is tar and is sent out.
The gas entering the gas-liquid separator is mostly decoked naphthol, and is extracted from the top of the gas-liquid separator. And the crude phenol with tar is a part of crude phenol, enters a falling film circulating pump from the bottom of the gas-liquid separator, and enters the falling film evaporator again for heating separation.
The device can continuously remove tar in the naphthol crude product, and compared with the prior art that a distillation kettle is used for intermittently discharging tar residues, the production efficiency is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a device for decoking and refining a crude naphthol product according to the present utility model.
In the figure, a 1-falling film evaporator, a 2-gas-liquid separator, a 3-wiped film evaporator, a 4-naphthol crude product feeding pipeline, a 5-return pipeline, a 6-overflow liquid pipeline, a 7-tar delivery pipeline, an 8-falling film circulating pump, a 9-refined naphthol delivery pipeline, a 10-flow valve and an 11-control valve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The following describes the technical scheme of the present utility model in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the embodiment provides a naphthol crude decoking and refining device, which comprises a falling film evaporator 1, a gas-liquid separator 2 and a wiped film evaporator 3; the top of the falling film evaporator 1 is provided with a feed inlet, and the feed inlet of the falling film evaporator 1 is connected with a naphthol crude product feeding pipeline 4; the naphthol crude product supply pipeline 4 is provided with a flow valve 10.
The gas outlet of the falling film evaporator 1 is connected with the gas-liquid separator 2 through a pipeline; the gas outlet at the top of the gas-liquid separator 2 is connected with a refined naphthol delivery pipeline 9. The liquid phase outlet arranged at the bottom of the gas-liquid separator 2 is connected with the falling film evaporator 1 through a return pipeline 5; the return line 5 is provided with a control valve 11 and a falling film circulation pump 8. The overflow port of the falling film evaporator 1 is connected with the wiped film evaporator 3 through an overflow liquid pipeline 6; the gas outlet of the wiped film evaporator 3 is connected with the gas-liquid separator 2 through a pipeline; the bottom of the wiped film evaporator 3 is connected with a tar delivery pipeline 7.
The specific working process is as follows:
according to the device for decoking and refining the crude naphthol, the crude naphthol is firstly sent into the falling film evaporator 1 through the naphthol crude feed pipeline 4, after the crude naphthol in the falling film evaporator 1 is heated, the naphthol is evaporated into a gas phase and enters the gas-liquid separator 2, and the liquid phase which is not evaporated by the gas-liquid separator 2 is forced to circulate and is sent into the falling film evaporator 1 through the falling film circulating pump 8.
When the liquid at the bottom of the falling film evaporator 1 reaches an overflow port, the overflow liquid enters the wiped film evaporator 3 through an overflow liquid pipeline 6, after being further heated by the wiped film evaporator 3, a small amount of naphthol in the liquid is changed into gas, the gas-liquid separator 2, the unvaporized liquid is tar, and the unvaporized liquid is sent out through a tar sending pipeline 7.
Most of the gas entering the gas-liquid separator 2 is decoked naphthol, and the gas is extracted from the top of the gas-liquid separator 2. The crude phenol with the tar is a part of the crude phenol, enters a falling film circulating pump 8 from the bottom of the gas-liquid separator 2, and enters the falling film evaporator 1 again for heating separation. The tar in the naphthol crude product is continuously removed through the device, and compared with the prior art that a distillation kettle is used for intermittently discharging tar residues, the production efficiency is greatly improved.
While the utility model has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the utility model pertains without departing from the scope of the utility model defined by the appended claims.
Claims (7)
1. The decoking refining device for the naphthol crude product is characterized by comprising a falling film evaporator (1), a gas-liquid separator (2) and a wiped film evaporator (3); the falling film evaporator (1) is connected with a naphthol crude product feeding pipeline (4); the gas outlet of the falling film evaporator (1) is connected with the gas-liquid separator (2) through a pipeline; the liquid phase outlet of the gas-liquid separator (2) is connected with the falling film evaporator (1) through a return pipeline (5); the overflow port of the falling film evaporator (1) is connected with the film scraping evaporator (3) through an overflow liquid pipeline (6); the gas outlet of the wiped film evaporator (3) is connected with the gas-liquid separator (2) through a pipeline; the bottom of the wiped film evaporator (3) is connected with a tar delivery pipeline (7).
2. The device for decoking and refining the crude naphthol according to claim 1, wherein the reflux pipeline (5) is provided with a falling film circulating pump (8).
3. The device for decoking and refining the crude naphthol according to claim 1, wherein a gas outlet at the top of the gas-liquid separator (2) is connected with a refined naphthol delivery pipeline (9).
4. The device for decoking and refining the crude naphthol according to claim 1, wherein the crude naphthol supply pipeline (4) is provided with a flow valve (10).
5. A naphthol crude decoking refining plant as claimed in claim 1, characterized in that said return line (5) is provided with a control valve (11).
6. The device for decoking and refining the crude naphthol according to claim 1, wherein the liquid phase outlet of the gas-liquid separator (2) is arranged at the bottom of the gas-liquid separator.
7. A naphthol crude decoking refining plant as claimed in claim 1, characterized in that the naphthol crude feed line (4) is connected to the top of the falling film evaporator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246742.1U CN219023264U (en) | 2022-12-05 | 2022-12-05 | Naphthol crude decoking refining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246742.1U CN219023264U (en) | 2022-12-05 | 2022-12-05 | Naphthol crude decoking refining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219023264U true CN219023264U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223246742.1U Active CN219023264U (en) | 2022-12-05 | 2022-12-05 | Naphthol crude decoking refining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219023264U (en) |
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2022
- 2022-12-05 CN CN202223246742.1U patent/CN219023264U/en active Active
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