CN214360344U - Concentrated mother liquor treatment device - Google Patents
Concentrated mother liquor treatment device Download PDFInfo
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- CN214360344U CN214360344U CN202120525389.7U CN202120525389U CN214360344U CN 214360344 U CN214360344 U CN 214360344U CN 202120525389 U CN202120525389 U CN 202120525389U CN 214360344 U CN214360344 U CN 214360344U
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- mother liquor
- concentrated mother
- treatment device
- receiving tank
- tail gas
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Abstract
The utility model discloses a concentrated mother liquor treatment device, which comprises a multiple-effect concentrated mother liquor buffer kettle, a dryer and a water vapor treatment device, wherein the devices are connected in sequence; the water vapor treatment device comprises a condenser, a fraction receiving tank and a tail gas absorption tower, wherein an exhaust pipeline of the fraction receiving tank is arranged at the upper part of the fraction receiving tank and is connected with the tail gas absorption tower; the distillate receiving tank drain pipe is arranged at the lower part of the distillate receiving tank and is connected with the water transfer pump. The utility model discloses a can realize the high-efficient processing of concentrated mother liquor and the recycle of resource, safety, environmental protection accord with green chemical production.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, concretely relates to dense mother liquor processing apparatus.
Background
In the chemical production process, the high salinity wastewater is mainly concentrated and desalted by adopting a multi-effect evaporation or MVR evaporation technology. After the treatment by the method, the obtained concentrated mother liquor is difficult to treat. Prior art 201821728857.5 discloses a concentrated mother liquor decrement treatment system after multiple-effect evaporation, which comprises a microwave vacuum drying device, an incineration device, a UASB reactor and an SBR reaction tank. The microwave vacuum drying is a process of heating under a vacuum condition by using microwave radiation as a heating source to dehydrate materials, integrates the advantages of microwave drying and vacuum drying, and ensures that water molecules in concentrated mother liquor are violently collided and rubbed under the action of electromagnetic waves in a vacuum state, so that the temperature of a system is rapidly increased, and moisture is vaporized to achieve the aim of drying. However, the drying process has the problems of difficult moisture removal, uneven heating, difficult judgment of the drying end point and the like, and further causes insufficient drying of the concentrated mother liquor, unstable quality of solid salt and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a processing apparatus of thick mother liquor to above problem, the device adopt cylinder scraper dryer to handle thick mother liquor, and the cylinder heating can realize the getting rid of moisture, and salt solid after the drying can be scraped from the cylinder automatically simultaneously. The evaporated water vapor enters a water vapor treatment device and can be recycled after being condensed. The concentrated mother liquor dried by the method can quickly evaporate water, and condensed water does not contain organic impurities and can be directly recycled after detection.
The utility model discloses specific technical scheme as follows: a concentrated mother liquor treatment device comprises a multi-effect concentrated mother liquor buffer kettle, a dryer and a water vapor treatment device which are connected in sequence; a stirrer is arranged inside the multi-effect concentrated mother liquor buffer kettle, and a heat-preservation jacket is arranged outside the multi-effect concentrated mother liquor buffer kettle;
the water vapor treatment device comprises a condenser, a fraction receiving tank and a tail gas absorption tower, wherein the condenser is provided with a cooling medium inlet and a cooling medium outlet, and an exhaust pipeline of the fraction receiving tank is arranged at the upper part of the fraction receiving tank and is connected with the tail gas absorption tower; the distillate receiving tank drain pipe is arranged at the lower part of the distillate receiving tank and is connected with the water transfer pump;
furthermore, a thermometer is arranged at the top of the multi-effect concentrated mother liquor buffer kettle;
furthermore, the multi-effect concentrated mother liquor buffer kettle is made of enamel;
furthermore, the dryer is a roller scraper dryer and is made of stainless steel;
furthermore, the heating medium of the roller scraper dryer is steam, and the steam pressure is 0.6-0.8 MPa;
further, the heating medium of the roller scraper dryer is heat conduction oil, and the temperature of the heat conduction oil is controlled to be 150-200 ℃;
furthermore, a noncondensable gas draught fan is arranged on a pipeline connecting the condenser receiving tank and the tail gas absorption tower;
further, the exhaust pipe of the tail gas absorption tower is provided with a quality detector.
The utility model discloses beneficial effect:
1. the multi-effect concentrated mother liquor buffer kettle can pre-mix concentrated mother liquor in a uniform state and pre-heat to raise the temperature;
2. the roller scraper dryer can work uninterruptedly, and dried salt solids can be automatically scraped away from the roller, so that energy is saved and consumption is reduced;
3. the steam that evaporates gets into the condenser, and the comdenstion water does not contain organic impurity after the condensation cooling, can direct recycle, and gaseous gets into the tail gas absorption tower through noncondensable gas draught fan, the zero release of guarantee waste gas, safety ring protects.
Drawings
Fig. 1 is a schematic structural diagram of the concentrated mother liquor treatment device of the present invention.
In the figure:
1-a multi-effect concentrated mother liquor buffer kettle, 11-a heat-preservation jacket, 12-a stirrer, 13-a motor, 14-a thermometer, 2-a roller scraper dryer, 3-a condenser, 31-a cooling medium inlet, 32-a cooling medium outlet, 4-a fraction receiving tank, 41-an exhaust pipe, 42-a drain pipe, 5-a noncondensable gas induced draft fan 6-a tail gas absorption tower, 61-a quality detector and 7-a water transfer pump.
Detailed Description
The invention will be further explained and illustrated with reference to the drawings and the detailed description, which are only intended to assist the person skilled in the art in better understanding the invention and do not limit its scope.
A concentrated mother liquor treatment device comprises a multi-effect concentrated mother liquor buffer kettle 1, a drying machine and a water vapor treatment device which are connected in sequence. The material of the multi-effect concentrated mother liquor buffer kettle 1 is enamel, a stirrer 12 is arranged in the multi-effect concentrated mother liquor buffer kettle 1, the stirrer 12 is driven by a motor 13, and a heat-insulating jacket 11 is arranged outside the stirrer; a thermometer 14 is arranged at the top of the multi-effect concentrated mother liquor buffer kettle 1.
The dryer is a roller scraper dryer 2 made of stainless steel and has high corrosion resistance. The heating medium of the roller scraper dryer 2 is steam, and the steam pressure is 0.6-0.8 Mpa; the heating medium of the roller scraper dryer is heat conduction oil, and the temperature of the heat conduction oil is controlled to be 150-200 ℃.
40% -60% thick mother liquor passes through feed arrangement and gets into thick mother liquor buffer tank 1 of multiple-effect, and thick mother liquor mixes the homogeneous state in thick mother liquor buffer tank 1 of multiple-effect to preheat and heat up, and thick mother liquor gets into cylinder scraper blade desiccator 2 after the intensification, and the drying is scraped away, scrapes the solid salt (the water content is less than or equal to 15%) that leaves, and steam gets into steam processing apparatus, and then recycle.
The water vapor treatment device comprises a condenser 3, a fraction receiving tank 4 and a tail gas absorption tower 6, wherein the condenser 3 is provided with a cooling medium inlet 31 and a cooling medium outlet 32, and an exhaust pipeline 41 of the fraction receiving tank 4 is arranged at the upper part of the fraction receiving tank 4 and is connected with the tail gas absorption tower 6; a noncondensable gas draught fan 5 is arranged on a pipeline connecting the condenser receiving tank 4 and the tail gas absorption tower 6; the blast pipe of tail gas absorption tower 6 be provided with quality detector 61, quality detector 61 can detect whether up to standard VOCs. The distillate receiving tank 4 is provided with a water discharge pipe 42 at the lower part of the distillate receiving tank 4 and is connected with the water transfer pump 7.
Adopt the utility model discloses thick mother liquor processing apparatus, can rationally, high-efficient processing industry contains salt waste water, for example, 2,4-D, the thick mother liquor 40% ~ 60% of water content after the evaporation that produces in the production process such as glyphosate, atrazine, drive agitator 12 behind the starter motor 13 and carry out the stirring to the thick mother liquor of multiple-effect thick mother liquor buffering 1 inside, the thick mother liquor buffering 1 control of multiple-effect is at 50 ℃ -80 ℃, thermometer 14 real-time supervision, heat preservation presss from both sides cover 11 and guarantees inside constancy of temperature, through preheating, after the stirring, get into 2 dryings of cylinder scraper blade. The solid salt was obtained after drying. The composition of the inorganic salt varies depending on the kind of wastewater, and when the inorganic salt is a single component, the resulting product is a refined salt which can be sold directly or reused for production, and when the inorganic salt is a mixture, further separation is required. After water vapor generated in the drying process is condensed by a condenser 3, condensed water is condensed and recycled, and the COD (chemical oxygen demand) of the condensed water is less than or equal to 10mg/L and can be directly recycled; the non-condensable gas is introduced into a tail gas absorption tower 6 through a non-condensable gas draught fan 5, alkaline absorption liquid is filled in the tail gas absorption tower 6, the non-condensable gas is absorbed, and zero emission of waste gas is guaranteed.
The above embodiments are provided only for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention, but all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention is defined by the claims.
Claims (8)
1. A concentrated mother liquor treatment device is characterized by comprising a multi-effect concentrated mother liquor buffer kettle, a dryer and a water vapor treatment device which are connected in sequence; a stirrer is arranged inside the multi-effect concentrated mother liquor buffer kettle, and a heat-preservation jacket is arranged outside the multi-effect concentrated mother liquor buffer kettle;
the water vapor treatment device comprises a condenser, a fraction receiving tank and a tail gas absorption tower, wherein the condenser is provided with a cooling medium inlet and a cooling medium outlet, and an exhaust pipeline of the fraction receiving tank is arranged at the upper part of the fraction receiving tank and is connected with the tail gas absorption tower; the distillate receiving tank drain pipe is arranged at the lower part of the distillate receiving tank and is connected with the water transfer pump.
2. The concentrated mother liquor treatment device as claimed in claim 1, wherein a thermometer is arranged on the top of the multi-effect concentrated mother liquor buffer kettle.
3. The concentrated mother liquor treatment device according to claim 1, wherein the multi-effect concentrated mother liquor buffer kettle is made of enamel.
4. The apparatus of claim 1, wherein the dryer is a drum scraper dryer and is made of stainless steel.
5. The concentrated mother liquor treatment device according to claim 4, wherein the heating medium of the roller scraper dryer is steam, and the steam pressure is 0.6MPa to 0.8 MPa.
6. The concentrated mother liquor treatment device according to claim 4, characterized in that the heating medium of the roller scraper dryer is heat transfer oil, and the temperature of the heat transfer oil is controlled to be 150-200 ℃.
7. The concentrated mother liquor treatment device according to claim 1, wherein a noncondensable gas induced draft fan is arranged on a connecting pipeline of the condenser receiving tank and the tail gas absorption tower.
8. The apparatus of claim 1, wherein the vent line of the tail gas absorber is provided with a mass detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120525389.7U CN214360344U (en) | 2021-03-13 | 2021-03-13 | Concentrated mother liquor treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120525389.7U CN214360344U (en) | 2021-03-13 | 2021-03-13 | Concentrated mother liquor treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214360344U true CN214360344U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120525389.7U Active CN214360344U (en) | 2021-03-13 | 2021-03-13 | Concentrated mother liquor treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214360344U (en) |
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2021
- 2021-03-13 CN CN202120525389.7U patent/CN214360344U/en active Active
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