Waste liquid deslagging system

Abstract

The utility model discloses a waste liquid deslagging system which comprises a drying mechanism, one end of the drying mechanism is provided with a steam outer pipe, and the drying mechanism comprises a recovery dryer used for concentrating waste liquid; the external steam port is fixed on one side of the bottom of the recovery drying machine; the condensate water discharge port is fixed on the other side of the bottom of the recovery drying machine; one end of the steam discharge port is connected with an evaporation mechanism through a steam pipe, a condensation mechanism is arranged at the bottom of the evaporation mechanism, and a residual liquid conveying pump is arranged at the bottom of the condensation mechanism. Through the arrangement mode that the drying mechanism, the evaporation mechanism and the condensation mechanism are matched, waste liquid can be conveniently subjected to residue concentration, residual liquid can be repeatedly evaporated and condensed, the complete waste liquid can be discharged after being concentrated, the residue removal effect of the waste liquid is improved, and the use stability of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste liquid deslagging, in particular to a waste liquid deslagging system. Background Art

[0002] In the manufacturing process of microfiber leather, DMF is used as a solvent to dissolve the polyurethane resin. In this process, DMF is washed out by utilizing its water-soluble property, resulting in DMF wastewater in the manufacturing process of microfiber leather. With the expansion of enterprise scale and the enhancement of human awareness of environmental protection, coupled with the requirements for synthetic leather production costs and the continuous development of DMF recovery technology, it is necessary to recover DMF from DMF wastewater for reuse.

[0003] The DMF recovery device can be roughly divided into three stages: vacuum concentration, feed evaporation, slag removal, vacuum distillation, vacuum deacidification, formic acid neutralization, and top water deamination. Application No. 201921162566.9 discloses an automatic waste liquid slag removal system, including a plate mud press and a dust removal tower. The top of the dust removal tower is provided with a waste gas outlet, and the waste gas outlet is connected to an exhaust pipe. The left end of the exhaust pipe is connected to an explosion-proof fan. A waste liquid sedimentation and separation tank is provided at the bottom of the waste liquid sedimentation and separation tank. A sewage pipe is provided at the bottom of the sewage pipe. The right end of the sewage pipe is connected to a mud pump, and the mud pump is connected to the plate mud press through a pipeline. The above-mentioned utility model can make the waste liquid sedimentation separation tank separate the solid and liquid of the waste liquid, reuse the clean water, realize the slag removal and also achieve the reuse of water resources. However, when the sludge is discharged from the waste liquid, there is a process in which the waste liquid condenses in the sludge, and the waste liquid is still easily distributed in the sludge, which affects the sludge removal effect of the waste liquid, resulting in incomplete sludge removal of the waste liquid, and affecting the stability of the use of the waste liquid slag removal system. Utility Model Content

[0004] The purpose of the utility model is to provide a waste liquid slag removal system to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a waste liquid slag removal system, comprising: a drying mechanism, one end of which is provided with a steam outer pipe, and the drying mechanism comprises:

[0006] A recovery dryer, which is used for concentrating waste liquid;

[0007] An external steam port, the external steam port being fixed to one side of the bottom of the recovery dryer;

[0008] A condensate discharge port, the condensate discharge port being fixed to the other side of the bottom of the recovery dryer;

[0009] A waste liquid feed port and a steam discharge port are fixed at the top of the other side of the recovery dryer, one end of the steam discharge port is connected to an evaporation mechanism through a steam pipe, a condensation mechanism is arranged at the bottom of the evaporation mechanism, and a residual liquid delivery pump is arranged at the bottom of the condensation mechanism.

[0010] Preferably, the steam outer pipe is fixedly connected to one end of the external steam port via a locking piece, and the condensate discharge port is used to recover the steam condensate in the inner cavity of the dryer for discharge.

[0011] Preferably, the evaporation mechanism comprises:

[0012] A connecting tank, the connecting tank is used for vacuum high-pressure evaporation of waste liquid steam;

[0013] A steam inlet, the steam inlet being fixed to one side of the top of the connecting tank;

[0014] A vacuum interface, the vacuum interface being fixed to the other side of the top of the connection tank;

[0015] A circulating water outlet pipe, wherein the circulating water outlet pipe is fixed to the other side of the top of the connection tank;

[0016] A circulating water inlet pipe is fixed to the other side of the bottom of the connecting tank.

[0017] Preferably, a vacuum system is provided at one end of the vacuum interface, and the bottom of the connecting tank is connected to the top of the condensation mechanism.

[0018] Preferably, the condensing mechanism comprises:

[0019] A condenser, the condenser being fixed to the bottom of the connecting tank;

[0020] The residual liquid discharge port is fixed at the bottom end of the condenser.

[0021] Preferably, the residual liquid discharge port is connected to a residual liquid delivery pump via a connecting pipe, and a residual liquid wastewater tank is provided at one end of the residual liquid delivery pump.

[0022] Technical effects and advantages of the utility model:

[0023] The utility model adopts a drying mechanism, an evaporation mechanism and a condensation mechanism in a coordinated manner, and utilizes a recovery dryer to concentrate the residue of the waste liquid, and enables the liquid in the residue to further evaporate and enter the condenser for condensation, and can repeatedly evaporate and condense the residual liquid, and the waste liquid can be discharged after being concentrated, thereby improving the deslagging effect of the waste liquid, providing complete performance of separating substances in the waste liquid, and improving the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 2 This is a schematic diagram of the overall front structure of the recovery dryer of the utility model.

[0026] Figure 3 It is a schematic diagram of the overall structure of the connection tank of the utility model.

[0027] In the figure: 1. Drying mechanism; 11. Recovery dryer; 12. External steam port; 13. Condensate discharge port; 14. Waste liquid feed port; 15. Steam discharge port; 2. Steam outer pipe; 3. Evaporation mechanism; 31. Connecting tank; 32. Steam inlet; 33. Vacuum interface; 34. Circulating water outlet pipe; 35. Circulating water inlet pipe; 4. Condensation mechanism; 41. Condenser; 42. Residual liquid discharge port; 5. Residual liquid delivery pump; 6. Residual liquid to waste water tank. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-3 A waste liquid slag removal system shown in the figure comprises: a drying mechanism 1, a steam outer tube 2 is arranged at one end of the drying mechanism 1, the drying mechanism 1 comprises: a recovery dryer 11, an external steam port 12, a condensed water discharge port 13, a waste liquid feed port 14 and a steam discharge port 15, the recovery dryer 11 is used for concentrating the waste liquid, the external steam port 12 is fixed to one side of the bottom of the recovery dryer 11, the steam outer tube 2 is fixedly connected to one end of the external steam port 12 by a locking member, and the steam can pass through the steam outer tube 2 into the inner cavity of the recovery dryer 11 through the external steam port 12, so as to facilitate steam heating of the inner cavity of the recovery dryer 11, the recovery dryer 11 is a recovery pot structure, and the dried slag can be discharged by opening the pot cover;

[0030] Specifically, the condensate discharge port 13 is fixed to the other side of the bottom of the recovery dryer 11, and the condensate discharge port 13 is used to discharge the steam condensate in the inner cavity of the recovery dryer 11, so that the steam condensate in the inner cavity of the recovery dryer 11 can be stably discharged through the condensate discharge port 13, and the waste liquid feed port 14 and the steam discharge port 15 are both fixed to the top of the other side of the recovery dryer 11, through the waste liquid feed port 14, the DMF waste water can enter the inner cavity of the recovery dryer 11, so that the DMF waste water can be heated and concentrated in the inner cavity of the recovery dryer 11, and the steam after the DMF waste water is heated can flow out of the inner cavity of the recovery dryer 11 from the steam discharge port 15, and the waste liquid feed port 14 and the steam discharge port 15 are both provided with solenoid valves, which are convenient for controlling the liquid inlet and steam outlet at the inner cavity of the waste liquid feed port 14 and the steam discharge port 15;

[0031] Furthermore, one end of the steam discharge port 15 is connected to an evaporation mechanism 3 through a steam pipe. The evaporation mechanism 3 includes: a connecting tank 31, a steam inlet 32, a vacuum interface 33, a circulating water outlet pipe 34 and a circulating water inlet pipe 35. The connecting tank 31 is used for vacuum and high-pressure evaporation of waste liquid steam. The steam inlet 32 ​​is fixed to one side of the top of the connecting tank 31. The steam heated in the inner cavity of the steam discharge port 15 can enter the inner cavity of the steam inlet 32 ​​through the connecting pipe, so that the steam heated in the inner cavity of the recovery dryer 11 can flow to the inner cavity of the connecting tank 31. The vacuum interface 33 is fixed to the other side of the top of the connecting tank 31. A vacuum system is provided at one end of the vacuum interface 33. Through the vacuum system, the steam can enter the inner cavity of the recovery dryer 11 through the vacuum interface 33, the steam inlet 32 ​​and the steam discharge port 15, so as to improve the vacuum in the inner cavity of the recovery dryer 11, so that the residual liquid in the inner cavity of the recovery dryer 11 is further evaporated and enters the inner cavity of the connecting tank 31.

[0032] Specifically, the circulating water outlet pipe 34 is fixed to the other side of the top of the connecting tank 31, and the circulating water inlet pipe 35 is fixed to the other side of the bottom of the connecting tank 31. Through the circulating water outlet pipe 34 and the circulating water inlet pipe 35, the inner cavity of the connecting tank 31 is condensed so that the residual liquid of the steam can be condensed to form liquid again.

[0033] Furthermore, a condensing mechanism 4 is provided at the bottom of the evaporating mechanism 3, and the bottom of the connecting tank 31 is connected to the top of the condensing mechanism 4. The condensing mechanism 4 includes: a condenser 41 and a residual liquid discharge port 42. The condenser 41 is fixed to the bottom of the connecting tank 31, and the condenser 41 can concentrate the residual liquid. The residual liquid discharge port 42 is fixed to the bottom end of the condenser 41. A residual liquid delivery pump 5 is provided at the bottom of the condensing mechanism 4. The residual liquid discharge port 42 is connected to the residual liquid delivery pump 5 through a connecting pipe. Solenoid valves are fixedly connected at both ends of the liquid inlet end of the residual liquid delivery pump 5 to facilitate control of the start of the residual liquid delivery pump 5. The residual liquid delivery pump 5 is used to transport the residual liquid. A residual liquid wastewater removal tank 6 is provided at one end of the residual liquid delivery pump 5 to facilitate the residual liquid to enter the residual liquid wastewater removal tank. The inner cavity of the tank 6 allows the residual liquid to be discharged. When in use, the steam from the steam outer pipe 2 is used to heat the DMF waste liquid in the inner cavity of the recovery dryer 11, and the vaporized steam returns to the inner cavity of the connecting tank 31. When the residue in the recovery dryer 11 accumulates to about half of the liquid level, it is switched to the residue concentration operation procedure, and the valve of the solenoid valve at the steam discharge port 15 of the residue removal condenser 41 is opened, and then the vacuum system is started to allow the vacuum in the inner cavity of the vacuum interface 33 to enter the inner cavity of the recovery dryer 11. The liquid in the residue in the recovery dryer 11 is further evaporated and enters the residue condenser 41 for condensation. The condensed residual liquid enters the condensate tank body, and the concentrated residual liquid is discharged to the inner cavity of the residual liquid wastewater removal tank 6 through the residual liquid delivery pump 5.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste liquid slag removal system, characterized in that: include: A drying mechanism (1), wherein a steam outer pipe (2) is provided at one end of the drying mechanism (1), and the drying mechanism (1) comprises: A recovery dryer (11), wherein the recovery dryer (11) is used for concentrating the waste liquid; An external steam port (12), wherein the external steam port (12) is fixed to one side of the bottom of the recovery dryer (11); A condensate discharge port (13), wherein the condensate discharge port (13) is fixed to the other side of the bottom of the recovery dryer (11); A waste liquid feed port (14) and a steam discharge port (15), wherein the waste liquid feed port (14) and the steam discharge port (15) are both fixed to the top of the other side of the recovery dryer (11), one end of the steam discharge port (15) is connected to an evaporation mechanism (3) via a steam pipe, a condensation mechanism (4) is provided at the bottom of the evaporation mechanism (3), and a residual liquid delivery pump (5) is provided at the bottom of the condensation mechanism (4).

2. A waste liquid slag removal system according to claim 1, characterized in that: The steam outer pipe (2) is fixedly connected to one end of the external steam port (12) via a locking piece, and the condensate discharge port (13) is used to recover the steam condensate in the inner cavity of the dryer (11) and discharge it.

3. A waste liquid slag removal system according to claim 2, characterized in that: The evaporation mechanism (3) comprises: A connecting tank (31), wherein the connecting tank (31) is used for vacuum high-pressure evaporation of waste liquid steam; A steam inlet (32), wherein the steam inlet (32) is fixed to one side of the top of the connecting tank (31); A vacuum interface (33), wherein the vacuum interface (33) is fixed to the other side of the top of the connecting tank (31); A circulating water outlet pipe (34), wherein the circulating water outlet pipe (34) is fixed to the other side of the top of the connecting tank (31); A circulating water inlet pipe (35), wherein the circulating water inlet pipe (35) is fixed to the other side of the bottom of the connecting tank (31).

4. A waste liquid slag removal system according to claim 3, characterized in that: One end of the vacuum interface (33) is provided with a vacuum system, and the bottom of the connecting tank (31) is connected to the top of the condensation mechanism (4).

5. A waste liquid slag removal system according to claim 4, characterized in that: The condensing mechanism (4) comprises: A condenser (41), wherein the condenser (41) is fixed to the bottom of the connecting tank (31); A residual liquid discharge port (42) is fixed to the bottom end of the condenser (41).

6. A waste liquid slag removal system according to claim 5, characterized in that: The residual liquid discharge port (42) is connected to the residual liquid delivery pump (5) via a connecting pipe, and a residual liquid wastewater removal tank (6) is provided at one end of the residual liquid delivery pump (5).

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