CN218596157U - Thioether waste water rectifier unit - Google Patents
Thioether waste water rectifier unit Download PDFInfo
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- CN218596157U CN218596157U CN202222769211.4U CN202222769211U CN218596157U CN 218596157 U CN218596157 U CN 218596157U CN 202222769211 U CN202222769211 U CN 202222769211U CN 218596157 U CN218596157 U CN 218596157U
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- thioether
- reboiler
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Abstract
The utility model discloses a thioether waste water rectifier unit, waste water tank are connected with the heat exchanger, and the heat exchanger is connected with the rectifying column, and the rectifying column bottom is connected with the reboiler, and the reboiler is connected with the alkali dissolving tank, and the reboiler still with the rectifying column sub-unit connection. The top of the rectifying tower is connected with a condenser group through a gas phase pipeline and then connected with a wastewater reflux tank, and the wastewater reflux tank is connected with the rectifying tower. The condenser group and the waste water reflux tank are respectively connected to the tail gas pipe through pipelines. The bottom of the rectifying tower is connected with a heat exchanger through a pipeline. The device is adopted to treat the wastewater, the substances such as methanol and the like can be efficiently recovered, and meanwhile, the rectified wastewater can be used for preheating raw material wastewater, recovering heat generated by the rectified wastewater and reducing energy consumption; the wastewater extracted after rectification can also be used for alkali dissolution in an alkali-blending feed chute, so that the rectification wastewater is fully utilized, and the water resource is effectively recovered.
Description
Technical Field
The patent of the utility model belongs to the waste water treatment field, concretely relates to thioether waste water rectifier unit.
Background
The rectification is a process of continuously separating the mixture by utilizing the difference of boiling points and volatilization capacities of components in the mixture and by utilizing the backflow of liquid phase and gas phase, so that the gas phase and the liquid phase are in reverse multistage contact, the volatile component is continuously transferred from the liquid phase to the gas phase under the constraint of heat energy drive and phase balance relation, and the non-volatile component is transferred from the gas phase to the liquid phase.
In industrial wastewater rectification, a packing rectifying tower is mostly used, the packing is pall ring packing, and the stacking mode is random packing. However, the existing rectifying tower process has the problems of over-standard COD content and over-low PH value of the rectified wastewater, and the like, and the wastewater cannot be directly sent to an environment-friendly station and needs further treatment.
Disclosure of Invention
To the technical problem, the utility model provides a thioether waste water rectifier unit, the waste water jar is connected with the heat exchanger, and the heat exchanger is connected with the rectifying column, and the rectifying column bottom is connected with the reboiler, and the reboiler is connected with the alkali dissolving tank, and the reboiler still with the rectifying column sub-unit connection.
The top of the rectifying tower is connected with a condenser group through a gas phase pipeline and then connected with a wastewater reflux tank, and the wastewater reflux tank is connected with the rectifying tower.
The condenser group and the waste water reflux tank are respectively connected to the tail gas pipe through pipelines.
The bottom of the rectifying tower is connected with a heat exchanger through a pipeline.
Wastewater in the thioether synthesis process is taken as a raw material, and the content of organic matters in the wastewater is reduced through rectification; the utility model discloses an innovation point lies in: the rectifying tower is filled and changed into regular packing by original random packing, has strengthened the rectifying effect of rectifying tower, has increased the waste water treatment capacity of rectifying tower: meanwhile, condensate methanol, thioether and the like can continuously return to a thioether synthesis system to continuously participate in thioether synthesis, so that the production cost is reduced.
Adopt the utility model discloses a device to carry out waste water treatment capacity and be 2000kg/h and above, COD numerical value is below 100, and pH is less than 9.
Drawings
FIG. 1 is a schematic diagram of a rectification apparatus for thioether waste water.
1: a waste water tank; 2: a tower bottom heat exchanger; 3: a rectifying tower; 4: a reboiler; 5: a gas phase conduit; 6: a condenser group; 7: a wastewater reflux tank; 8: and (4) an alkali dissolving tank.
Detailed Description
Example 1
The invention is further described with reference to the following figures and examples, but the scope of the invention as claimed is not limited to the examples.
Thioether waste water rectifier unit, waste water jar 1 is connected with heat exchanger 2, and heat exchanger 2 is connected with rectifying column 3, and 3 bottoms of rectifying column are connected with reboiler 4, and reboiler 4 is connected with alkali dissolving tank 8, and reboiler 4 still is connected with 3 sub-unit connections of rectifying column.
The top of the rectifying tower 3 is connected with a condenser group 6 through a gas phase pipeline 5 and then connected with a wastewater reflux tank 7, and the wastewater reflux tank 7 is connected with the rectifying tower 3.
The condenser set 6 and the waste water reflux tank 7 are respectively connected to a tail gas pipe through pipelines.
The bottom of the rectifying tower 3 is connected with the heat exchanger 2 through a pipeline.
The thioether wastewater rectification process comprises the following steps:
the thioether wastewater mainly comprises: 5-10% of methanol, 85-90% of water content and 2-3% of dimethyl sulfide and methyl mercaptan.
1. A wastewater preheating procedure: the temperature of the thioether wastewater is 30-35 ℃, the thioether wastewater is conveyed into a heat exchanger 2 from a wastewater tank 1, and the thioether wastewater enters a rectifying tower 3 from the middle part through heat exchange with the extracted rectifying wastewater to reach 50-55 ℃;
2. wastewater rectification process: the rectifying tower 3 controls the temperature at the top of the tower to be 70-90 ℃ through a reboiler 4, the pressure at the top of the tower to be 60-130KPa, the liquid level at the bottom of the tower to be 1500-1900mm and the temperature at the bottom of the tower to be 105-125 ℃ so as to separate methanol and thioether from the wastewater;
3. a wastewater treatment process: the gas phase of the rectifying tower 3 is methanol vapor and the like, the liquid phase is rectified wastewater, after the pH and the COD are detected to be qualified, the pH is not higher than 9, the COD content of the wastewater is not higher than 100mg/L, and the wastewater can be sent to an environmental protection station for further treatment and conveyed to an alkali dissolving tank (8) for proportioning alkali liquor concentration;
4. and a tail gas treatment process: the gas-phase material at the top of the tower enters a condenser unit 6 through a gas-phase pipeline 5 to be condensed by circulating water, the low-temperature water is condensed and then enters a wastewater reflux tank 7, the condensate consists of 20-25% of water, 60-65% of methanol, 0.5-1% of methyl mercaptan and 10-15% of dimethyl sulfide, the water is further reduced by refluxing in a rectifying tower, and the reflux amount is 800kg/h; the non-condensable gas in the condenser and the waste water reflux tank 7 is led to a tail gas main pipe for tail gas absorption and purification, so that the waste water treatment capacity is 2000kg/h, and the COD value is below 100.
Claims (4)
1. Thioether waste water rectifier unit, its characterized in that, waste water jar (1) is connected with heat exchanger (2), and heat exchanger (2) are connected with rectifying column (3), and rectifying column (3) bottom is connected with reboiler (4), and reboiler (4) are connected with alkali dissolving tank (8), and reboiler (4) still are connected with rectifying column (3) sub-unit.
2. The thioether wastewater rectification apparatus according to claim 1, wherein the top of the rectification column (3) is connected with a condenser group (6) via a gas phase pipeline (5) and then connected with a wastewater reflux tank (7), and the wastewater reflux tank (7) is connected with the rectification column (3).
3. The thioether wastewater rectification apparatus according to claim 1, wherein the condenser group (6) and the wastewater reflux tank (7) are respectively connected to a tail gas pipe via pipelines.
4. The thioether wastewater rectification device according to claim 1, characterized in that the bottom of the rectification column (3) is connected via a pipe to the heat exchanger (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222769211.4U CN218596157U (en) | 2022-10-20 | 2022-10-20 | Thioether waste water rectifier unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222769211.4U CN218596157U (en) | 2022-10-20 | 2022-10-20 | Thioether waste water rectifier unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218596157U true CN218596157U (en) | 2023-03-10 |
Family
ID=85402777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222769211.4U Active CN218596157U (en) | 2022-10-20 | 2022-10-20 | Thioether waste water rectifier unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218596157U (en) |
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2022
- 2022-10-20 CN CN202222769211.4U patent/CN218596157U/en active Active
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