CN112717473B - Simple device for reducing sodium sulfate content in crude phenol product - Google Patents
Simple device for reducing sodium sulfate content in crude phenol product Download PDFInfo
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- CN112717473B CN112717473B CN202011513776.5A CN202011513776A CN112717473B CN 112717473 B CN112717473 B CN 112717473B CN 202011513776 A CN202011513776 A CN 202011513776A CN 112717473 B CN112717473 B CN 112717473B
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- pipe
- crude phenol
- liquid outlet
- outlet pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/02—Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
- C07C37/009—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up from waste water
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- Organic Chemistry (AREA)
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- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a simple device for reducing the content of sodium sulfate in a crude phenol product, which comprises a crude phenol product tank, wherein a liquid inlet pipe is arranged at the top of the crude phenol product tank, a first liquid outlet pipe and a second liquid outlet pipe are arranged on the side wall of the crude phenol product tank, the first liquid outlet pipe is arranged above the second liquid outlet pipe, the second liquid outlet pipe is close to the bottom of the crude phenol product tank, a liquid feeding pipe is arranged on the left side of the crude phenol product tank, the upper end of the liquid feeding pipe is led into the crude phenol product tank from the top of the crude phenol product tank, the bottom end of the liquid feeding pipe is connected with a pump, the first liquid outlet pipe and the second liquid outlet pipe are communicated with the liquid feeding pipe, the liquid feeding pipe is also connected with a third liquid outlet pipe, one end of the liquid outlet pipe is connected with the liquid feeding pipe, the other end of the liquid outlet pipe is connected with three phases, the tail end of the third liquid outlet pipe is connected with the first liquid outlet pipe and the second liquid outlet pipe, and the raw material tank of the device; the simple device solves the problem that the crude phenol product carries sodium sulfate, and has the advantages of simple structure, convenient operation and low cost.
Description
Technical Field
The invention relates to the technical field of separation and purification, in particular to a simple device for reducing the content of sodium sulfate in a crude phenol product.
Background
The sodium phenolate solution generated in the tar processing process can utilize sulfuric acid to decompose sodium phenolate, and crude phenol and sodium sulfate wastewater can be obtained. In the process of decomposing the sodium phenolate by using the sulfuric acid, the product obtained after the reaction of the sodium phenolate and the dilute sulfuric acid is finally sent to a separation tower. Placing crude phenol on the upper layer of the separation tower, placing the crude phenol on the upper layer into a crude phenol tank, and conveying the crude phenol to a finished product tank area by a crude phenol pump; the sodium sulfate wastewater is placed at the lower layer, and the sodium sulfate wastewater at the lower layer of the separation tower enters a sodium sulfate tank and is periodically sent to a wastewater treatment device by a sodium sulfate pump. However, in the actual production process, the separation of the crude phenol from the sodium sulfate in the separation tower is often influenced by various factors, the crude phenol and the sodium sulfate cannot be effectively separated, and the crude phenol product often carries the sodium sulfate, so that the purity and the quality of the crude phenol product are influenced, and therefore, the sodium sulfate impurity in the crude phenol needs to be further removed. How to effectively remove sodium sulfate impurities in crude phenol is a problem which is in urgent need of treatment.
Disclosure of Invention
Aiming at the technical problems and the defects, the invention provides a simple device for reducing the content of sodium sulfate in a crude phenol product, which effectively solves the problem that the crude phenol product carries sodium sulfate and improves the purity of the crude phenol product.
Therefore, the invention provides the following technical scheme:
a simple device for reducing the content of sodium sulfate in a crude phenol product comprises a crude phenol product tank, wherein a liquid inlet pipe is arranged at the top of the crude phenol product tank, crude phenol in a separation tower enters the crude phenol product tank through the liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe are arranged on the side wall of the crude phenol product tank, the first liquid outlet pipe is arranged above the second liquid outlet pipe, the second liquid outlet pipe is close to the bottom of the crude phenol product tank, a first valve and a second valve are respectively arranged on the first liquid outlet pipe and the second liquid outlet pipe, a liquid feeding pipe is arranged on the left side of the crude phenol product tank, the upper end of the liquid feeding pipe is introduced into the crude phenol product tank from the top of the crude phenol product tank, the bottom end of the liquid feeding pipe is connected with a pump, the first liquid outlet pipe and the second liquid outlet pipe are communicated with a liquid feeding pipe, a third valve is arranged above the connection position of the liquid feeding pipe and the first liquid outlet pipe, a vent pipe is further connected to the liquid feeding pipe, a third liquid discharging pipe is further connected to the pump, one end of the breather pipe is connected with the liquid feeding pipe, the other end of the breather pipe is connected with the liquid outlet pipe in a three-phase mode, the breather pipe is provided with a valve IV, the liquid outlet pipe III is further connected with an air inlet pipe, the air inlet pipe is provided with a valve V, the liquid outlet pipe III is provided with a valve VI, the tail end of the liquid outlet pipe III is connected with a first liquid discharge pipe and a second liquid discharge pipe, and the second liquid discharge pipe is connected with a device raw material tank.
In the preferable technical scheme, the height difference between the first liquid outlet pipe and the second liquid outlet pipe is 10-30 cm.
In a preferable technical scheme, the gas introduced into the gas inlet pipe is nitrogen.
In the preferable technical scheme, the nitrogen gas is introduced for 30-120 min/time at a flow rate of 20-200Nm 3/h.
According to the preferable technical scheme, the top of the crude phenol product tank is provided with an exhaust pipe, and the exhaust pipe is provided with a valve seven.
Compared with the prior art, the invention has the beneficial effects that:
according to the simple device for reducing the content of sodium sulfate in the crude phenol product, the liquid outlet pipe I and the liquid outlet pipe II with a certain height difference are arranged on the side wall of the crude phenol product tank, sodium sulfate can be settled to the bottom layer by utilizing the density difference of crude phenol and sodium sulfate, settled sodium sulfate liquid is extracted from the liquid outlet pipe II, and crude phenol liquid on the upper layer is extracted from the liquid outlet pipe I, so that the two are effectively separated; the liquid delivery pipe is flushed clean by adopting nitrogen flow. The simple device has the advantages of simple structure, convenient operation, easy realization on production, low cost, obvious effect and strong practicability.
Drawings
Fig. 1 is a schematic structural diagram of the simple device of the present invention.
The reference numbers in the above figures are as follows:
1-crude phenol product tank; 2-liquid inlet pipe; 3-a first liquid outlet pipe; 4-a liquid outlet pipe II; 5-liquid delivery pipe; 6-valve one; 7-valve two; 8-valve III; 9-a breather pipe; 10-valve four; 11-a pump; 12-liquid outlet pipe III; 13-a first liquid discharge pipe; 14-liquid discharge pipe II; 15-device raw material tank; 16-an air inlet pipe; 17-valve five; 18-valve six; 19-an exhaust pipe; 20-valve seven.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings and the implementation examples of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
As shown in fig. 1, this embodiment provides a simple apparatus for reducing sodium sulfate content in a crude phenol product, which includes a crude phenol product tank 1, a liquid inlet pipe 2 is disposed at the top of the crude phenol product tank, crude phenol in a separation tower enters the crude phenol product tank 1 through the liquid inlet pipe 2, a first liquid outlet pipe 3 and a second liquid outlet pipe 4 are disposed on a side wall of the crude phenol product tank, the first liquid outlet pipe 3 is disposed above the second liquid outlet pipe 4, the second liquid outlet pipe 4 is close to the bottom of the crude phenol product tank 1, a first valve 6 and a second valve 7 are disposed on the first liquid outlet pipe 3 and the second liquid outlet pipe 4, respectively, a liquid feeding pipe 5 is disposed on the left side of the crude phenol product tank, an upper end of the liquid feeding pipe 5 is introduced into the crude phenol product tank from the top of the crude phenol product tank, a pump 11 is connected to a bottom end of the liquid feeding pipe, the first liquid outlet pipe 3 and the second liquid outlet pipe 4 are communicated with the liquid feeding pipe 5, and a third valve 8 is disposed above a connection position where the liquid feeding pipe 5 and the first liquid feeding pipe 3 are connected, the liquid feeding pipe 5 is further connected with a vent pipe 9, the pump 11 is further connected with a liquid outlet pipe III 12, one end of the vent pipe is connected with the liquid feeding pipe 5, the other end of the vent pipe is connected with the liquid outlet pipe III 12, the vent pipe 9 is provided with a valve IV 10, the liquid outlet pipe III 12 is further connected with an air inlet pipe 16, the air inlet pipe 16 is provided with a valve V18, the liquid outlet pipe III 12 is provided with a valve VI 17, the tail end of the liquid outlet pipe III is connected with a liquid outlet pipe I13 and a liquid outlet pipe II 14, and the liquid outlet pipe II 14 is connected with a raw material tank 15.
According to the preferable technical scheme, the height difference between the first liquid outlet pipe 3 and the second liquid outlet pipe 4 is 15 cm.
In a preferred embodiment, the gas introduced into the gas inlet pipe 16 is nitrogen.
In a preferable technical scheme, the nitrogen gas is introduced for 60min, and the flow rate of the introduced gas is 100Nm 3/h.
According to the preferable technical scheme, the top of the crude phenol product tank is provided with an exhaust pipe 19, and the exhaust pipe is provided with a valve seven 20.
The working principle is as follows: crude phenol in the separation tower enters a crude phenol product tank through a liquid inlet pipe, and a product in the crude phenol product tank is in a standing process because the crude phenol and sodium sulfate have density difference, the density of sodium sulfate in the crude phenol product is higher than that of the crude phenol, and the sodium sulfate is in standing at the bottom of the crude phenol product tank. Closing the valve I, opening the valve II, pumping out liquid at the bottom of the product tank into the liquid delivery pipe through the liquid outlet pipe II by using power provided by the pump, opening the valve VI, and allowing liquid in the liquid outlet pipe III to enter the raw material tank of the device through the liquid outlet pipe II, thereby realizing the recovery of sodium sulfate; then opening a valve III, a valve IV and a valve V, introducing nitrogen, controlling the flow rate of gas to be 100Nm3/h, introducing nitrogen flow into a liquid washing pipe III, a vent pipe and a liquid sending pipe, flushing the pipe wall, allowing residual liquid to flow out under the impact of the gas, introducing the nitrogen into a crude phenol product tank from the top end of the liquid sending pipe, opening a valve VII, and discharging the nitrogen through a top exhaust pipe; and closing the valve II, the valve III, the valve IV and the valve V, opening the valve I, starting the pump, pumping out the crude phenol product in the crude phenol product tank through the liquid outlet pipe I, finally entering the liquid discharge pipe I through the liquid outlet pipe III, and collecting to obtain the crude phenol product.
The simple device has the advantages of simple structure, convenient operation, easy realization in production, low cost, obvious separation effect and strong practicability.
In the description herein, the particular features, structures, materials, or characteristics disclosed may be combined in any suitable manner in any one or more embodiments or examples. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, all of which are within the scope of the invention.
Claims (5)
1. The utility model provides a reduce simple and easy device of sodium sulfate content in crude phenol product, includes crude phenol product groove (1), its characterized in that: the top of the crude phenol product tank is provided with a liquid inlet pipe (2), crude phenol in the separation tower enters the crude phenol product tank (1) through the liquid inlet pipe (2), a first liquid outlet pipe (3) and a second liquid outlet pipe (4) are arranged on the side wall of the crude phenol product tank, the first liquid outlet pipe (3) is arranged above the second liquid outlet pipe (4), the second liquid outlet pipe (4) is close to the bottom of the crude phenol product tank, a first valve (6) and a second valve (7) are respectively arranged on the first liquid outlet pipe (3) and the second liquid outlet pipe (4), a liquid feeding pipe (5) is arranged on the left side of the crude phenol product tank, the upper end of the liquid feeding pipe (5) is introduced into the crude phenol product tank from the top of the crude phenol product tank, the bottom end of the liquid feeding pipe is connected with a pump (11), the first liquid outlet pipe (3) and the second liquid outlet pipe (4) are communicated with the liquid feeding pipe (5), and a third valve (8) is arranged above the connection position of the first liquid feeding pipe, still be connected with breather pipe (9) on the liquid sending pipe, still be connected with drain pipe three (12) on pump (11), the one end of breather pipe (9) is connected with the liquid sending pipe, the other end of breather pipe is connected with drain pipe three (12), be equipped with valve four (10) on breather pipe (9), still be connected with intake pipe (16) on drain pipe three (12), be equipped with valve five (18) on intake pipe (16), be equipped with valve six (17) on drain pipe three (12), the end-to-end connection of drain pipe three has fluid-discharge tube one (13) and fluid-discharge tube two (14), fluid-discharge tube two (14) are connected with device raw material tank (15).
2. The simple device for reducing the content of sodium sulfate in the crude phenol product as claimed in claim 1, wherein the height difference between the first liquid outlet pipe (3) and the second liquid outlet pipe (4) is 10-30 cm.
3. The simple device for reducing the sodium sulfate content in the crude phenol product as claimed in claim 1, wherein the gas introduced into the gas inlet pipe (16) is nitrogen.
4. The simple device for reducing the sodium sulfate content in the crude phenol product as claimed in claim 3, wherein the nitrogen gas is introduced for 30-120 min/time at a flow rate of 20-200Nm 3/h.
5. The simple device for reducing the content of sodium sulfate in the crude phenol product according to claim 3, wherein an exhaust pipe (19) is arranged at the top of the crude phenol product tank, and a valve seven (20) is arranged on the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011513776.5A CN112717473B (en) | 2020-12-21 | 2020-12-21 | Simple device for reducing sodium sulfate content in crude phenol product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011513776.5A CN112717473B (en) | 2020-12-21 | 2020-12-21 | Simple device for reducing sodium sulfate content in crude phenol product |
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| Publication Number | Publication Date |
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| CN112717473A CN112717473A (en) | 2021-04-30 |
| CN112717473B true CN112717473B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011513776.5A Active CN112717473B (en) | 2020-12-21 | 2020-12-21 | Simple device for reducing sodium sulfate content in crude phenol product |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554631A (en) * | 2003-12-22 | 2004-12-15 | 济南钢铁集团总公司 | Process for producing crude carbolic acid by decomposing by-product phenate of coking plant |
| AU2008329559A1 (en) * | 2007-11-28 | 2009-06-04 | Wasabi (Holdings) Pty Ltd | Liquid treatment apparatus |
| CN101792369A (en) * | 2009-10-29 | 2010-08-04 | 上海应用技术学院 | Method and device for producing coal tar crude phenol |
| CN202953965U (en) * | 2012-11-28 | 2013-05-29 | 中冶焦耐工程技术有限公司 | Continuous decomposition device for pure phenol sodium sulfate |
| CN105879471B (en) * | 2016-06-14 | 2018-01-05 | 上海奥星制药技术装备有限公司 | Remnant liquid recovering device, method and pharmacy liquid mixing system |
| CN208406175U (en) * | 2018-04-11 | 2019-01-22 | 山东斯递尔化工科技有限公司 | A kind of continuous liquid-liquid phase-splitter |
| CN210044923U (en) * | 2019-04-30 | 2020-02-11 | 南京雄凯过滤设备有限公司 | Chlorosilane liquid-solid filtering device for removing silicon powder by dry method in polycrystalline silicon production |
| CN210473175U (en) * | 2019-07-29 | 2020-05-08 | 南京本森自动化设备有限公司 | Residual liquid emptying device in filter press hole cavity |
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