CN217297348U

CN217297348U - Organic waste liquid separation and purification device

Info

Publication number: CN217297348U
Application number: CN202123443154.2U
Authority: CN
Inventors: 仲亚洲; 杨浩飞
Original assignee: WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO Ltd
Current assignee: WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-26
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to an organic waste liquid separating and purifying device, which comprises a raw material tank, a primary distillation tower, a secondary distillation tower, a fourth receiving tank, a rectifying tower, a tailing receiving tank, a first receiving tank, a second receiving tank and a third receiving tank; the raw material tank is communicated with the primary distillation tower, the top of the primary distillation tower is provided with a first receiving tank, and the bottom of the primary distillation tower is connected with the feed inlet of the secondary distillation tower; the top of the secondary distillation tower is provided with a second receiving tank, and the bottom of the secondary distillation tower is connected with a fourth receiving tank; the fourth receiving tank is communicated with the rectifying tower; the top of rectifying column is provided with the third of receiving the DMSO product and receives the jar, and the bottom is provided with the tails and receives the jar. Separation and purification device can obtain high purity content's DMSO product, and equipment system area is little, has perfect autonomous system, and production continuity benefit is put efficiently, and the rate of recovery is high.

Description

Organic waste liquid separation and purification device

Technical Field

The utility model relates to a waste liquid separation and purification device technical field, in particular to organic waste liquid separation and purification device.

Background

Dimethyl sulfoxide (DMSO) is a multifunctional solvent, and because DMSO is used for dissolving and absorbing other substances in many semiconductor and fine chemical industries due to the good dissolving characteristic of DMSO, many organic wastewater contains DMSO components;

the methods for recovering and purifying DMSO reported in the literature and patents at present are: three-tower rectification, resin adsorption and thermoelectric coupling. But the three-tower rectification method has the disadvantages of large occupied area, large steam consumption and high equipment operation cost; the actual disposal quantity of the resin adsorption method is low, the recovery cost is high, and the resin adsorption method is difficult to be suitable for actual production; although the thermoelectric coupling process is improved in equipment and operation compared with a three-tower rectification method, the thermoelectric coupling process still remains in the separation and purification of simple organic mixtures;

most of the existing purification processes are dehydration purification processes for single aqueous DMSO, the separation and purification effects on the solution containing mixed organic matters are difficult to achieve, and many devices are in semi-automatic states.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, the application provides an organic waste liquid separation and purification device. The utility model separates PM/PMA (propylene glycol methyl ether/propylene glycol methyl ether acetate) from the mixed liquid by a double-effect conjoined distillation tower to obtain coarse DMSO, and the content is more than 90%; then rectifying the crude DMSO by using a rectifying tower alone to obtain a DMSO product with high purity content, wherein the content is more than 99.9%; the equipment system has small occupied area, a perfect automatic control system, high production continuity and efficiency and high recovery rate.

The technical scheme of the utility model as follows:

a separation and purification device for organic waste liquid comprises a raw material tank 1, a primary distillation tower 3, a secondary distillation tower 4, a fourth receiving tank 8, a rectifying tower 10, a tailing receiving tank 12, a first receiving tank 20, a second receiving tank 29 and a third receiving tank 16; the raw material tank 1 is communicated with a primary distillation tower 3 through a pump I2 and a heater, and organic waste liquid in the raw material tank 1 is input into the primary distillation tower 3; the top of the primary distillation tower 3 is provided with a first receiving tank 20 for collecting the PM/PMA component obtained by distillation; the bottom of the primary distillation tower 3 is connected with a feed inlet of a secondary distillation tower 4 through a pump II 5; the top of the secondary distillation tower 4 is provided with a second receiving tank 29 for receiving the intermediate distillation material, and the intermediate distillation material respectively reflows to the raw material tank 1 and the primary distillation tower 3 for secondary distillation; the bottom of the secondary distillation tower 4 is connected with a fourth receiving tank 8 through a pump III 6 and an electric valve I7, and a reflux pipeline is arranged between the pump III 6 and the electric valve I7 and is connected with a feed inlet of the secondary distillation tower 4; the fourth receiving tank 8 is communicated with a rectifying tower 10 through a pump IV 9; a third receiving tank 16 for receiving DMSO products is arranged at the top of the rectifying tower 10, and a tailing receiving tank 12 is arranged at the bottom of the rectifying tower 10; the separation and purification device also comprises an automatic interlocking control system.

Further, the heaters include a primary heater 34 and a secondary heater 33.

Further, the top of the primary distillation tower 3 is also provided with a primary condenser I24, a secondary condenser I23 and a first distribution groove 22; the top distillation material of the primary distillation tower 3 is condensed by a condenser, part of the top distillation material enters a first distribution groove 22, and part of the top distillation material flows back to the primary distillation tower 3 through a lateral line, and the first distribution groove 22 is connected with a first receiving tank 20.

Further, the top of the secondary distillation tower 4 is also provided with a primary condenser II 25, a secondary condenser II 26 and a second distribution groove 27; the top distillation material of the secondary distillation tower 4 enters a second distribution groove 27 after being condensed by a condenser, and the second distribution groove 27 is connected with a second receiving tank 29; the intermediate distillation material received by the second receiving tank 29 is controlled by an electric valve II 30 and a pump VI 32 and flows back to the raw material tank 1 and the primary distillation tower 3.

Further, a liquid level meter I18, a liquid level meter II 19 and a liquid level meter III 35 are respectively arranged on the primary distillation tower 3, the secondary distillation tower 4 and the fourth receiving tank 8.

Further, a liquid level meter IV 36 is arranged on the rectifying tower 10; the top of the rectifying tower 10 is also provided with a first-stage condenser III 13, a second-stage condenser III 14 and a third distribution groove 15; the distilled material at the top of the rectifying tower 10 is condensed by the condenser, then enters the third distribution groove 15 partially through a pipeline, and partially flows back to the rectifying tower 10 through a lateral line, and the third distribution groove 15 is connected with the third receiving tank 16.

Further, the bottom of the rectifying column 10 is connected to a tailing receiving tank 12 through a pump v 11.

Further, the primary distillation tower 3, the secondary distillation tower 4 and the rectifying tower 10 are heated by steam, and the temperature in the towers is less than 120 ℃.

Furthermore, the heating medium of the heater is the condensed water of the primary distillation tower 3 and the secondary distillation tower 4.

Further, the automatic interlocking control system comprises a pump, an electric valve and a liquid level meter.

The liquid level meter is arranged at the middle lower part of the tower, the liquid level is too high, the gas-liquid intersection distance is not enough, and the high boiling point and the low boiling point are difficult to separate; the liquid level is too low, the solution retention time is short, the separation effect is poor, and the disposal efficiency is low.

The novel automatic interlocking control is as follows:

(1) the pump I2 and the pump VI 32 control the material to enter the primary distillation tower 3 for distillation, and are interlocked with the liquid level meter I18 and the pump II 5, when the liquid level meter I18 is in a high liquid level, the pump I2 or the pump VI 32 is firstly closed, the liquid level of the primary distillation tower 3 is maintained for 5min, and the pump II 5 is opened; the material enters a secondary distillation tower 4 from the bottom of a primary distillation tower 3; when the liquid level meter I18 is at a low liquid level, the pump II 5 is firstly closed, the pump I2 and the pump VI 32 are opened, the raw materials enter the primary distillation tower 3, and the materials in the second receiving tank 29 enter the primary distillation tower 3 and the raw material tank 1 through the action of the pump VI 32 through the electric valve II 30;

(2) the liquid level meter II 19 is in linkage control with the pump II 5 and the electric valve I7, when the liquid level meter II 19 is high in liquid level, the pump II 5 is firstly closed, and when the liquid level meter II 19 maintains the liquid level for 5min, the electric valve I7 is opened; when the liquid level meter II 19 is at a low liquid level, the electric valve I7 is closed;

(3) the rectifying tower 10 is interlocked with a liquid level meter III 35, when the liquid level meter III 35 is at a high liquid level, a pump IV 9 is started, and materials enter the rectifying tower 10; when the liquid level meter III 35 is at a low liquid level, the pump IV 9 is closed, and the rectifying tower 10 is closed;

(4) the liquid level meter IV 36 is interlocked with the pump IV 9, and when the liquid level meter IV 36 is at a high liquid level, the pump IV 9 is closed; when the liquid level meter IV 36 is at a low liquid level, the pump IV 9 is started;

the pumps I2, VI 32, II 5 and IV 9 are metering pumps, and the feeding flow rate is adjusted and controlled.

The utility model discloses profitable technological effect lies in:

(1) the utility model discloses a to adopt two distillation systems and rectification system cooperation, constructed the device that can separate PM PMA and DMSO simultaneously, the device adopts automatic interlocking system, and the cooperation of pump is taken into account to the accessible level realizes automatic control, and the distillation column adopts steam to distill, and the steam condensate water heats the raw materials, improves the raw materials and advances tower distillation temperature for evaporation efficiency improves distillation speed, the energy saving, and experimental resources recycles.

(2) The device system can obtain PM/PMA with the content of more than 90% through distillation, and the DMSO product with the content of more than 99.9%, realizes the recycle of resource maximize with organic waste water, improves economic value.

Drawings

Fig. 1 is a schematic view of the apparatus system of the present invention.

In the figure: 1. a stock tank; 2. a pump I; 3. a primary distillation column; 4. a secondary distillation column; 5. a pump II; 6. a pump III; 7. an electric valve I; 8. a fourth receiving tank; 9. a pump IV; 10. a rectifying tower; 11. a pump V; 12. a tailings receiving tank; 13. a first-stage condenser III; 14. a second-stage condenser III; 15. a third distribution groove; 16. a third receiving tank; 18. a liquid level meter I; 19. a liquid level meter II; 20. a first receiving tank; 22. a first distribution groove; 23. a second-stage condenser I; 24. a first-stage condenser I; 25. a first-stage condenser II; 26. a second-stage condenser II; 27. a second distribution groove; 29. a second receiving tank; 30. an electric valve II; 32. a pump VI; 33. a primary heater; 34. a secondary heater; 35. a liquid level meter III; 36. and a liquid level meter IV.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Example 1

A separation and purification device system for organic waste liquid comprises a raw material tank 1, a primary distillation tower 3, a secondary distillation tower 4, a fourth receiving tank 8, a rectifying tower 10, a tailing receiving tank 12, a first receiving tank 20, a second receiving tank 28 and a third receiving tank 16; the raw material tank 1 is communicated with a primary distillation tower 3 through a pump I2 and a heater, and organic waste liquid in the raw material tank 1 is input into the primary distillation tower 3; the top of the primary distillation tower 3 is provided with a first receiving tank 20 for collecting the PM/PMA component obtained by distillation; the bottom of the primary distillation tower 3 is connected with a feed inlet of the secondary distillation tower 4 through a pump II 5; the top of the secondary distillation tower 4 is provided with a second receiving tank 29 for receiving intermediate distillation materials, and the intermediate distillation materials respectively flow back to the raw material tank 1 and the primary distillation tower 3 for secondary distillation; the bottom of the secondary distillation tower 4 is connected with a fourth receiving tank 8 through a pump III 6 and an electric valve I7, and a reflux pipeline is arranged between the pump III 6 and the electric valve I7 and connected with a feed inlet of the secondary distillation tower 4; the fourth receiving tank 8 is communicated with a rectifying tower 10 through a pump IV 9; a third receiving tank 16 for receiving DMSO products is arranged at the top of the rectifying tower 10, and a tailing receiving tank 12 is arranged at the bottom of the rectifying tower 10; the separation and purification device also comprises an automatic interlocking control system.

Further, the heaters include a primary heater 34 and a secondary heater 33.

Further, a first-stage condenser II 25, a second-stage condenser II 26 and a second distribution groove 27 are further arranged at the top of the second-stage distillation tower 4; the top distillation material of the secondary distillation tower 4 enters a second distribution groove 27 after being condensed by a condenser, and the second distribution groove 27 is connected with a second receiving tank 29; the intermediate distillation material received by the second receiving tank 29 is controlled by an electric valve II 30 and a pump VI 32 and flows back to the raw material tank 1 and the primary distillation tower 3.

Further, a liquid level meter IV 36 is arranged on the rectifying tower 10; the top of the rectifying tower 10 is also provided with a first-stage condenser III 13, a second-stage condenser III 14 and a third distribution groove 15; the distillation material at the top of the rectifying tower 10 is condensed by the condenser, part of the distillation material enters the third distribution groove 15 through a pipeline, part of the distillation material flows back to the rectifying tower 10 through a lateral line, and the third distribution groove 15 is connected with the third receiving tank 16.

Further, the bottom of the rectifying tower 10 is connected with a tailing receiving tank 12 through a pump v 11.

Further, the heating medium of the heater is condensed water of the primary distillation tower 3 and the secondary distillation tower 4.

The novel automatic interlocking control is as follows:

(1) the pump I2 and the pump VI 32 control materials to enter the primary distillation tower 3 for distillation, and are interlocked with the liquid level meter I18 and the pump II 5, when the liquid level meter I18 is at a high liquid level, the pump I2 or the pump VI 32 is firstly closed, the liquid level of the primary distillation tower 3 is maintained for 5min, and the pump I5 is opened; the material enters a secondary distillation tower (4) from the bottom of a primary distillation tower (3); when the liquid level meter I18 is at a low liquid level, the pump I5 is firstly closed, the pump I2 and the pump VI 32 are opened, the raw materials enter the primary distillation tower 3, and the materials in the second receiving tank 29 enter the primary distillation tower 3 and the raw material tank 1 through the action of the pump VI 32 through the electric valve II 30;

(2) the liquid level meter II 19 is in linkage control with the pump II 5 and the electric valve I7, when the liquid level meter II 19 is high in liquid level, the pump I5 is firstly closed, and when the liquid level meter II 19 maintains the liquid level for 5min, the electric valve I7 is opened; when the liquid level meter II 19 is at a low liquid level, the electric valve I7 is closed;

(4) the liquid level meter V36 is interlocked with the pump IV 9, and when the liquid level meter IV 36 is at a high liquid level, the pump IV 9 is closed; when the liquid level meter IV 36 is at a low liquid level, the pump IV 9 is started;

The utility model discloses can be used to DMSO in the organic waste liquid of separation and purification (the content of each component is shown as table 1 in the organic waste liquid), the concrete process of separation is:

(1) adding a stabilizer into a DMSO organic waste liquid raw material, pumping the mixture to a primary heater and a secondary heater from a raw material tank through a pump, and then entering a first tower for distillation, and distilling under negative pressure, wherein the distillation conditions are as follows: the solution temperature is 95-110 ℃, and the negative pressure of the system is as follows: -0.09Mpa, reflux take-off ratio 4: 1;

(2) and (3) introducing the distillate into a distribution tank after primary condensation and secondary deep cooling, wherein part of the distillate is used for reflux, and the rest is taken out and enters a receiving tank to be recycled as a PM/PMA finished product.

(3) And (3) pumping the material at the bottom of the first tower into a second tower through a pump for distillation, wherein the distillation conditions are as follows: the solution temperature is 95-110 ℃, and the system negative pressure is as follows: -0.095 Mpa;

(4) the fraction enters a distribution tank after primary condensation and secondary deep cooling, flows into a receiving tank, and is pumped into a raw material tank or a first tower feeding pipeline

(5) The discharge port at the bottom of the second tower is connected with a pump, the material returns from the middle of the tower, when the liquid level meter is at a high liquid level, the pump is automatically closed, the electric valve is automatically opened, and part of the material is discharged to the receiving tank

(6) After the high liquid level of the liquid level meter of the receiving tank is detected, the pump is automatically started, the material is pumped into the third tower, and the rectification is performed under the conditions of negative pressure and rectification: temperature of the solution: 110 ℃ plus 120 ℃, and the negative pressure of the system is-0.099 MPa;

(7) the distillate enters a distribution tank after passing through a primary condenser and secondary deep cooling, part of the distillate flows back, and the rest of the distillate is taken out to a receiving tank to recover a product;

(8) and (3) stopping feeding when the liquid level of the third tower and the bottom of the third tower reach a high liquid level by using a liquid level meter in the third tower, automatically closing the pump, reducing the negative pressure of the system to 80 ℃, closing the vacuum, automatically opening a discharge electric valve at the bottom of the tower, and discharging tailings to a receiving tank.

TABLE 1

The utility model relates to a economic benefits and social benefits tower links to each other with the rectifying column, can carry out effective separation to multiple organic and draw, can purify effective component. Use the utility model discloses to the organic waste liquid of different component content (the waste liquid is PM 10.1%, PMA 14.2%, moisture 1.35%, DMSO 70.65%, other 3.7% and PM 15.1%, PMA 20.7%, moisture 2.31%, DMSO 55.09%, other 6.8%) separate purification, the content of gained DMSO all is greater than 99.9%.

The above description is for the purpose of explanation and not limitation of the present invention, and any modifications may be made within the scope of the present invention as defined in the appended claims.

Claims

1. The device for separating and purifying the organic waste liquid is characterized by comprising a raw material tank (1), a primary distillation tower (3), a secondary distillation tower (4), a fourth receiving tank (8), a rectifying tower (10), a tailing receiving tank (12), a first receiving tank (20), a second receiving tank (29) and a third receiving tank (16); the raw material tank (1) is communicated with the primary distillation tower (3) through a pump I (2) and a heater, and the top of the primary distillation tower (3) is provided with a first receiving tank (20); the bottom of the primary distillation tower (3) is connected with a feed inlet of the secondary distillation tower (4) through a pump II (5); the top of the secondary distillation tower (4) is provided with a second receiving tank (29), and the second receiving tank (29) is communicated with the raw material tank (1) and the primary distillation tower (3) through pipelines; the bottom of the secondary distillation tower (4) is connected with a fourth receiving tank (8) through a pump III (6) and an electric valve I (7), and a reflux pipeline is arranged between the pump III (6) and the electric valve I (7) and is connected with a feed inlet of the secondary distillation tower (4); the fourth receiving tank (8) is communicated with the rectifying tower (10) through a pump IV (9); a third receiving tank (16) is arranged at the top of the rectifying tower (10), and a tailing receiving tank (12) is arranged at the bottom of the rectifying tower (10); the separation and purification device also comprises an automatic interlocking control system.

2. The separation and purification apparatus of claim 1, wherein the heater comprises a primary heater (34) and a secondary heater (33).

3. The separation and purification device according to claim 1, wherein the top of the primary distillation tower (3) is further provided with a primary condenser I (24), a secondary condenser I (23) and a first distribution groove (22); the top distillation material of the primary distillation tower (3) is condensed by a condenser, part of the top distillation material enters a first distribution groove (22), part of the top distillation material flows back to the primary distillation tower (3) through a lateral line, and the first distribution groove (22) is connected with a first receiving tank (20).

4. The separation and purification device according to claim 1, wherein the top of the secondary distillation column (4) is further provided with a primary condenser II (25), a secondary condenser II (26) and a second distribution groove (27); the top distillation material of the secondary distillation tower (4) enters a second distribution groove (27) after being condensed by a condenser, and the second distribution groove (27) is connected with a second receiving tank (29); the intermediate distillation material received by the second receiving tank (29) is controlled by an electric valve II (30) and a pump VI (32) and flows back to the raw material tank (1) and the primary distillation tower (3).

5. The separation and purification device according to claim 1, wherein a liquid level meter I (18), a liquid level meter II (19) and a liquid level meter III (35) are respectively arranged on the primary distillation tower (3), the secondary distillation tower (4) and the fourth receiving tank (8).

6. The separation and purification device according to claim 1, wherein a liquid level meter IV (36) is arranged on the rectifying tower (10); the top of the rectifying tower (10) is also provided with a first-stage condenser III (13), a second-stage condenser III (14) and a third distribution groove (15); the distilled material at the top of the rectifying tower (10) is condensed by a condenser, then enters a third distribution groove (15) through a pipeline in part, and returns to the rectifying tower (10) through a lateral line in part, and the third distribution groove (15) is connected with a third receiving tank (16).

7. The separation and purification device according to claim 1, wherein the bottom of the rectification column (10) is connected with a tailing receiving tank (12) through a pump V (11).

8. The separation and purification device according to claim 1, wherein the primary distillation tower (3), the secondary distillation tower (4) and the rectification tower (10) are heated by steam, and the temperature in the towers is less than 120 ℃.

9. The separation and purification apparatus according to claim 1, wherein the heating medium of the heater is condensed water of the primary distillation column (3) and the secondary distillation column (4).

10. The apparatus of claim 1, wherein the automatic interlock control system comprises a pump, an electric valve and a liquid level meter.