CN212854651U - Continuous liquid separating device - Google Patents
Continuous liquid separating device Download PDFInfo
- Publication number
- CN212854651U CN212854651U CN202021410524.5U CN202021410524U CN212854651U CN 212854651 U CN212854651 U CN 212854651U CN 202021410524 U CN202021410524 U CN 202021410524U CN 212854651 U CN212854651 U CN 212854651U
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- liquid separation
- tank
- liquid
- continuous
- continuous liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims description 59
- 239000000126 substance Substances 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 16
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 13
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 22
- 239000002253 acid Substances 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Abstract
The application relates to a continuous liquid separating device, which is characterized by comprising at least one liquid separating tank, wherein a flow guide pipe extending into the middle lower part of the tank is arranged in the liquid separating tank, an overflow port and a vent port are arranged at the upper part of the tank, and a bottom valve is arranged at the bottom of the tank; the pipe diameter of the flow guide pipe is the same as that of the pipeline before entering the tank; the outlet of the draft tube is close to the bottom of the tank and is positioned in the water phase.
Description
Technical Field
The application relates to a continuous liquid distribution device.
Background
With the rapid development of the chemical industry, the national requirements on the environmental protection of the chemical industry are increasingly strict, the recycling treatment difficulty of chemical organic waste liquid is increasingly high, most of the organic solvent is recycled at present through alkali washing or acid washing, then neutral organic solvent is obtained through separation treatment, and then pure organic solvent is obtained through recycling of a rectifying tower. However, the recovery mode produces a large amount of wastewater containing organic impurities and salts, the environmental protection pressure is large, and the energy consumption is large, the time and the labor are wasted, and the production cost is increased due to the fact that rectification is needed.
Disclosure of Invention
The invention aims to provide a continuous liquid separating device, which can conveniently and efficiently recover an organic solvent containing acidic or alkaline substances, has low energy consumption, is energy-saving and environment-friendly, and can continuously operate, thereby improving the production efficiency.
Specifically, the present invention relates to:
(1) the continuous liquid separation device is characterized by comprising at least one liquid separation tank, wherein a guide pipe extending into the middle lower part of the tank is arranged in the liquid separation tank, an overflow port and a vent port are arranged at the upper part of the tank, and a bottom valve is arranged at the bottom of the tank; the pipe diameter of the flow guide pipe is the same as that of the pipeline before entering the tank; the outlet of the draft tube is close to the bottom of the tank and is positioned in the water phase.
(2) The continuous liquid separation device in the above (1), wherein the number of the liquid separation tanks is 2-3, preferably 2.
(3) The continuous liquid separation device in the (2), wherein the liquid separation tanks are connected in series, and the height difference of overflow ports of adjacent liquid separation tanks is not less than 30 cm.
(4) The continuous liquid separation device according to any one of the above (1) to (3), which is used for recovering an organic solvent containing an acidic or basic substance, wherein the target organic solvent to be obtained is a light phase, the first liquid separation tank is connected with the recovery kettle, and a condenser is arranged between the first liquid separation tank and the recovery kettle.
(5) The continuous liquid separation device according to any one of the above (1) to (4), wherein an interface meter is provided on the liquid separation tank.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the continuous liquid separation device of the present application.
Fig. 2 is a schematic structural diagram of a preferred embodiment of the continuous liquid separation device for recovering an organic solvent containing an acidic or basic substance.
Description of reference numerals:
1: liquid separating tank;
2: a flow guide pipe;
3: an overflow port;
4: a vent port;
5: a bottom valve;
6: an interface meter;
7: a pipeline before tank entry;
8: a recovery kettle;
9: a condenser.
Detailed Description
As shown in figure 1, the liquid separating device comprises at least one liquid separating tank 1, a guide pipe 2 extending into the middle lower part of the tank is arranged inside the liquid separating tank 1, an overflow port 3 and a vent port 4 are arranged on the upper part of the tank, and a bottom valve 5 is arranged on the bottom of the tank.
The liquid separating device can be used for recovering organic solvents containing acidic or basic substances. For this purpose, the first partial-liquid tank 1 is connected to a recovery vessel 8 via a condenser 9, as shown in FIG. 2.
The liquid separating device is suitable for being used in liquid separation of a light phase serving as a target phase to be obtained.
The number of the liquid separation tanks 1 may be determined depending on the properties of the liquid to be separated, and is preferably 2 or more from the viewpoint of ensuring sufficient liquid separation, but is generally preferably not more than 3, and preferably 2 from the viewpoint of time.
When more than two liquid separation tanks 1 are arranged, the tanks are connected in series, and a certain height difference is arranged between the adjacent tanks, so that liquid can flow from the previous tank to the next tank by means of a potential difference without pumping. The height difference is determined according to factors influencing the pipe resistance, such as the viscosity of the liquid, the distance between the tanks, the size of the connecting pipeline and the like. The height difference is typically not less than 30cm, measured as the height difference between the overflow ports 3 on each tank.
The residence time of the liquid in the liquid separation tank 1 is determined according to the time required for the liquid to be fully layered, and the volume of the tank is reasonably determined according to the residence time and the feeding speed of the liquid.
The continuous liquid separation device is characterized in that a liquid separation tank 1 is internally provided with a guide pipe 2 extending into the middle lower part of the tank, and the distance between the outlet of the guide pipe 2 and the bottom of the tank is preferably 20-50 cm.
If the liquid to be separated continuously falls into the separating tank 1 from the upper part thereof, the upper layer light phase is always in a state of disturbance of the liquid level, and in this state, if the upper layer light phase is caused to flow out from the overflow port 3, a certain amount of moisture is still contained therein. Therefore, the feeding is stopped for a certain time after the liquid tank is fully stored, and the light phase can flow out from the overflow port 3 after the liquid tank is fully kept standing and layered, so that the continuous operation cannot be carried out.
This application is through the setting of honeycomb duct 2 as above, and the liquid of waiting to divide the liquid is by the well lower part of water conservancy diversion to divide liquid jar 1, has avoided liquid to fall into above the liquid level of jar upper portion and has caused the continuous disturbance of liquid level, consequently lies in the light phase layer near overflow mouth 3 on jar upper portion and keeps static always, can keep light phase constantly flowing out from overflow mouth 3 on one side of the feeding, can realize continuous operation from this.
The outlet of the draft tube 2 is in the water phase.
When the liquid separation device is used for separating an organic solvent containing an acidic or basic substance, conventionally, an alkali or an acid for neutralizing the acidic or basic substance contained in the solvent is added to the recovery tank 8 and then distilled, and therefore, a salt generated by neutralization is finally mixed as a tank residue and an organic residue, and the post-treatment is difficult and the recovery is difficult, so that the environmental pressure is large. Different from the method, the method is characterized in that the alkali or acid for neutralizing the acidic or alkaline substances contained in the solvent is not added into the recovery kettle 8 but added into the separating tank 1, and the acidic or alkaline substances contained in the solvent can enter the water phase, so that the salt generated by neutralization exists in the water phase, the post-treatment is convenient, the high-efficiency recovery can be realized, and the environmental pressure is greatly reduced.
When 2 or more liquid separation tanks 1 are provided, the base or acid for neutralizing the acidic or basic substance contained in the solvent may be added to one liquid separation tank 1 or may be added to each tank.
In order to make the acid or alkaline substance contained in the solvent and the added alkali or acid fully produce neutralization reaction, it is beneficial that a certain disturbance is placed in the water phase layer positioned in the bottom portion of liquid-separating tank 1, so that the pipe diameter of flow-guiding pipe 2 is not need to be thickened, and is identical to pipe diameter of pipeline 7 before the liquid-separating tank, so that the inflowing liquid can not be decelerated. In addition, the outlet of the draft tube 2 is close to the bottom of the tank and is positioned in the water phase, so that the disturbance of the water phase is favorably formed.
The vent 4 is used to maintain pressure in the separation tank 1 and is preferably connected to a tail gas absorption unit to reduce inorganical emissions.
Preferably, the liquid separation tank 1 is further provided with an interface meter 6, and a bottom valve 5 at the bottom of the tank is opened according to the liquid level display of the interface meter 6 to discharge the water phase.
The continuous liquid separating device is preferably made of acid and alkali resistant materials, such as glass, enamel and lining plastic materials.
When the continuous liquid separation device is used for recovering the organic solvent, the continuous liquid separation device can replace a rectification device, is energy-saving and environment-friendly, can also avoid mixing salt generated by acidic or alkaline substances contained in the neutralized organic solvent with distilled organic residues, efficiently recovers the salt, and greatly reduces the environmental protection pressure. Furthermore, the continuous liquid distribution device can continuously work, and the production efficiency is improved.
The continuous liquid separation device of the present application is described below by way of specific examples, but the present application is not limited to these examples, and any modification or change within the scope of the present application is within the scope of the present application.
EXAMPLES recovery of toluene from hydrochloric acid-containing waste toluene
Adding 10-15% sodium hydroxide aqueous solution serving as washing liquid into two liquid separation tanks 1 to reach an appointed liquid level, pumping waste methylbenzene containing hydrochloric acid into a recovery kettle 8, heating to boil, condensing methylbenzene vapor into liquid through a condenser 9, and feeding the liquid into the liquid separation tanks 1 through a flow guide pipe 2, wherein the pipe diameter of the flow guide pipe 2 is the same as that of a connecting pipeline between the condenser 9 and the liquid separation tanks 1. After automatic layering, the toluene on the upper layer enters a liquid separation tank 1 through an overflow port 3, and the two liquid separation tanks 1 connected in series are arranged. After the liquid separation treatment in the two liquid separation tanks 1, the pH value of the toluene is neutral, and the moisture content in the toluene is less than 0.03 percent and reaches the qualified standard through a Fisher-Tropsch type moisture determination method. Qualified toluene enters the storage tank from an overflow port 3 of the second liquid separation tank 1, the layered water phase is deposited at the bottoms of the two liquid separation tanks 1, when the water layer reaches the specified height through an interface meter 6, the layered water phase is discharged through a bottom valve 9 at the bottom, and sodium chloride industrial salt is obtained after dehydration and is recycled. After the washing liquid in the liquid separation tank 1 becomes neutral, the washing liquid is discharged and new washing liquid is injected again.
In the embodiment, the pipeline 7 and the guide pipe 2 before entering the tank are DN50 pipes.
Industrial applicability
The continuous liquid separating device can be widely used for recovering organic solvents, particularly organic solvents containing acids or alkaline substances, can replace a rectifying device with high energy consumption, is energy-saving and environment-friendly, can convert the acidic or alkaline substances in the organic solvents into salts in a water phase, is convenient to recover, and greatly reduces the pressure of environmental protection. Further, can also carry out the separation of dividing continuously through the device that divides of this application, improve production efficiency.
Claims (7)
1. The continuous liquid separation device is characterized by comprising at least one liquid separation tank, wherein a guide pipe extending into the middle lower part of the tank is arranged in the liquid separation tank, an overflow port and a vent port are arranged at the upper part of the tank, and a bottom valve is arranged at the bottom of the tank;
the pipe diameter of the flow guide pipe is the same as that of the pipeline before entering the tank;
the outlet of the draft tube is close to the bottom of the tank and is positioned in the water phase.
2. The continuous liquid separation device according to claim 1, wherein the number of the liquid separation tanks is 2-3.
3. The continuous liquid separation device according to claim 2, wherein the number of the liquid separation tanks is 2.
4. The continuous liquid separation device according to claim 2 or 3, wherein the liquid separation tanks are connected in series, and the height difference of overflow ports of adjacent liquid separation tanks is not less than 30 cm.
5. The continuous liquid separation device according to claim 1 or 2, wherein the device is used for recovering an organic solvent containing acidic or basic substances, the target organic solvent to be obtained is a light phase, the first liquid separation tank is connected with a recovery kettle, and a condenser is arranged between the first liquid separation tank and the recovery kettle.
6. The continuous liquid separation device according to claim 5, wherein the step of neutralizing the acidic or basic substance is performed in a liquid separation tank.
7. The continuous liquid separation device according to claim 1 or 2, wherein an interface meter is arranged on the liquid separation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021410524.5U CN212854651U (en) | 2020-07-17 | 2020-07-17 | Continuous liquid separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021410524.5U CN212854651U (en) | 2020-07-17 | 2020-07-17 | Continuous liquid separating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212854651U true CN212854651U (en) | 2021-04-02 |
Family
ID=75215736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021410524.5U Active CN212854651U (en) | 2020-07-17 | 2020-07-17 | Continuous liquid separating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212854651U (en) |
-
2020
- 2020-07-17 CN CN202021410524.5U patent/CN212854651U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 052260 No.1, Hongsheng Road West, Mayu Village, Mayu Township, Jinzhou City, Shijiazhuang City, Hebei Province Patentee after: Lansheng Biotechnology Group Co.,Ltd. Patentee after: Hebei lanrun Plant Protection Technology Co.,Ltd. Address before: 052260 Mayu village, Jinzhou City, Shijiazhuang City, Hebei Province Patentee before: HEBEI LANSHENG BIOTECH Co.,Ltd. Patentee before: Hebei lanrun Plant Protection Technology Co.,Ltd. |