Waste liquid evaporation system

Abstract

The utility model discloses a waste liquid evaporation system which comprises an evaporation tank, a separation mechanism and a mounting mechanism, the separation mechanism is used for carrying out vapor-liquid separation, and the separation mechanism is used for mounting and dismounting the separation mechanism. Waste liquid is fed into the inner cavity of the evaporation tank through the external discharging pump, the DMF waste liquid continuously circulates between the evaporation tank and the feeding heater through the feeding circulating pump, and the feeding heater heats the DMF waste liquid through steam from an outer pipe, so that the steam enters the inner cavity of the evaporation tank, and the DMF waste liquid enters the evaporation tank. Steam upwards enters the inner cavity of the feeding pipe, passes through the inner cavity of the connecting pipe and upwards penetrates through the wire mesh demister, liquid in the steam is filtered and absorbed through the wire mesh demister, waste liquid can be conveniently evaporated, and the liquid around the wire mesh demister downwards falls between the outer wall of the partition plate and the inner wall of the connecting pipe, so that the waste liquid can be conveniently evaporated. Vapor-liquid separation can be conveniently carried out on vapor, and liquid can be conveniently collected.

Description

Technical Field

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

[0002] The polyurethane resin used in the production process of PU synthetic leather usually uses DMF as a solvent. During the wet production of PU synthetic leather, the DMF reagent enters the coagulation tank, during which DMF seeps out and dissolves in water to form a certain mass concentration of DMF waste liquid. In order to eliminate the impact of DMF waste liquid on the environment, the DMF waste liquid must be recycled. Traditional recycling devices use distillation to evaporate the water in the waste liquid.

[0003] Common recovery devices use heaters to heat waste liquids when evaporating them. When the heated waste liquid is transmitted in a pipeline, heat loss will occur, reducing the heating effect of the waste liquid and affecting the evaporation of the waste liquid. In addition, waste liquid will remain in the generated steam, and the waste liquid will flow with the steam, making it inconvenient to recover and separate the waste liquid in the steam, thus affecting the purification effect of the waste liquid. Utility Model Content

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

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste liquid evaporation system, comprising an evaporation tank;

[0006] It also includes a separation mechanism, which is disposed in the inner cavity of the evaporation tank and is used to form a filtering structure in the inner cavity of the evaporation tank and perform vapor-liquid separation;

[0007] The mounting mechanism is arranged on the separating mechanism, and the separating mechanism is used to form a fixing mechanism on the separating mechanism and to install and disassemble the separating mechanism.

[0008] Preferably, the separation mechanism comprises:

[0009] A wire mesh demister, the wire mesh demister is arranged in the inner cavity of the evaporator, and the wire mesh demister is used to filter the steam and liquid inside the evaporator;

[0010] A fixing ring, the outer wall of which is fixedly connected to the inner wall of the evaporation tank, and the top of which is in contact with the bottom of the wire mesh demister;

[0011] A feed pipe, wherein the outer wall of the bottom end of the feed pipe is fixedly connected to the inner wall of the evaporation tank.

[0012] Preferably, the separation mechanism comprises:

[0013] A connecting pipe, the bottom end of which is fixedly connected to the top end of the feed pipe, and the top end of which is fixedly connected to the bottom end of the fixing ring;

[0014] A partition, the bottom end of which is fixedly connected to the inner wall of the connecting pipe;

[0015] A drain pipe, one end of which is fixedly inserted and connected to the bottom of the connecting pipe, and the other end of which is fixedly inserted and connected to the evaporation tank.

[0016] Preferably, the mounting mechanism comprises:

[0017] Limit blocks, the limit blocks are arranged in a ring array on the upper surface of the wire mesh demister, and the lower surface of the limit blocks is in contact with the upper surface of the wire mesh demister;

[0018] A bolt, one end of which is slidably and interlacedly connected with the limit block, and one end of which is threadedly connected with the inner wall of the evaporator.

[0019] Preferably, the mounting mechanism comprises:

[0020] A positioning block, the top of which is fixedly connected to the lower surface of the limiting block;

[0021] The mounting holes are arranged in a circular array on the upper surface of the wire mesh demister, and the inner cavity of the mounting holes is slidably and interlacedly connected with the positioning block.

[0022] Preferably, a feed circulation pump is provided on one side of the evaporation tank, a feed heater is provided on one side of the evaporation tank, and the evaporation tank, the feed circulation pump and the feed heater are connected by a pipeline.

[0023] Technical effects and advantages of the utility model:

[0024] The utility model utilizes an evaporator, a feed circulation pump, a feed heater, a wire mesh demister, a feed pipe, a connecting pipe and a partition plate in a coordinated arrangement mode, and waste liquid is sent into the inner cavity of the evaporator through an external discharge pump, and the DMF waste liquid is continuously circulated between the evaporator and the feed heater through the feed circulation pump, and the feed heater utilizes steam from an external pipe to heat the DMF waste liquid, so that the steam enters the inner cavity of the evaporator, and the steam enters the inner cavity of the feed pipe upward, and the steam passes through the inner cavity of the connecting pipe and upwardly passes through the wire mesh demister, and the wire mesh demister is utilized to filter and absorb liquid in the steam, so that the waste liquid is conveniently evaporated, and the liquid at the surrounding position of the wire mesh demister falls downward between the outer wall of the partition plate and the inner wall of the connecting pipe, so that the steam is conveniently separated from the steam by steam and the liquid is conveniently collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 This is a front sectional structural schematic diagram of the evaporation tank of the utility model.

[0027] Figure 3 It is a front sectional structural schematic diagram of the partition of the utility model.

[0028] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram of FIG.

[0029] In the figure: 1. evaporator; 2. separation mechanism; 21. wire mesh demister; 22. fixing ring; 23. feed pipe; 24. connecting pipe; 25. partition; 26. drain pipe; 3. installation mechanism; 31. limit block; 32. bolt; 33. positioning block; 34. installation hole; 4. feed circulation pump; 5. feed heater. DETAILED DESCRIPTION

[0030] 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.

[0031] The utility model provides Figure 1-4 A waste liquid evaporation system shown includes an evaporation tank 1, a separation mechanism 2 and an installation mechanism 3. Steam enters the inner cavity of the evaporation tank 1 from the bottom. The separation mechanism 2 is arranged in the inner cavity of the evaporation tank 1. The separation mechanism 2 is used to form a filtering structure in the inner cavity of the evaporation tank 1 and perform vapor-liquid separation. The liquid in the steam in the inner cavity of the evaporation tank 1 is separated and removed by the separation mechanism 2, and the separated liquid is conveniently collected and discharged. The installation mechanism 3 is arranged on the separation mechanism 2. The separation mechanism 2 is used to form a fixing mechanism on the separation mechanism 2 and install and disassemble the separation mechanism 2. The installation mechanism 3 facilitates the installation and fixing of the wire mesh demister 21, and facilitates the replacement of the wire mesh demister 21.

[0032] The separation mechanism 2 includes a wire mesh demister 21, a fixing ring 22, a feed pipe 23, a connecting pipe 24, a partition 25 and a drain pipe 26. The wire mesh demister 21 is arranged in the inner cavity of the evaporator 1. The steam in the inner cavity of the evaporator 1 is discharged upward through the wire mesh demister 21. The wire mesh demister 21 is used to filter and absorb the liquid in the steam. The wire mesh demister 21 is used to filter the steam and liquid inside the evaporator 1. The outer wall of the fixing ring 22 is fixedly connected to the inner wall of the evaporator 1, and the top of the fixing ring 22 is in contact with the bottom of the wire mesh demister 21. The fixing ring 22 is used to support and install the wire mesh demister 21 and fix the connecting pipe 24. The outer wall of the bottom end of the feed pipe 23 is fixedly connected to the inner wall of the evaporator 1. The feed pipe 23 is arranged in a funnel shape. The steam at the bottom of the inner cavity of the evaporator 1 enters the inner cavity of the feed pipe 23, and the steam floats upward along the inner cavity of the feed pipe 23. The bottom end of the connecting pipe 24 is fixedly connected to the top end of the feed pipe 23. The top end of the connecting pipe 24 is fixedly connected to the bottom end of the fixing ring 22. The connecting pipe 24 is funnel-shaped. The steam in the inner cavity of the feed pipe 23 The liquid enters the inner cavity of the connecting pipe 24 and passes upward through the wire mesh demister 21. The bottom end of the partition 25 is fixedly connected to the inner wall of the connecting pipe 24. The partition 25 is arranged in a trumpet shape. The partition 25 is arranged below the wire mesh demister 21, so that the liquid around the wire mesh demister 21 falls downward to between the outer wall of the partition 25 and the inner wall of the connecting pipe 24 to collect the liquid. One end of the drain pipe 26 is fixedly connected to the bottom of the connecting pipe 24 through insertion, and the other end of the drain pipe 26 is fixedly connected to the evaporation tank 1 through insertion. The multiple drain pipes 26 are arranged in a circular array and tilted. The drain pipe 26 is arranged outside the connecting pipe 24, and a control valve is fixedly installed at the other end of the drain pipe 26. The liquid between the outer wall of the partition 25 and the inner wall of the connecting pipe 24 is discharged through the drain pipe 26. The steam in the inner cavity of the evaporator 1 enters the inner cavity of the feed pipe 23 upward. The steam passes through the inner cavity of the connecting pipe 24 and upward through the wire mesh demister 21. The wire mesh demister 21 is used to filter and absorb the liquid in the steam, and the liquid around the wire mesh demister 21 falls downward between the outer wall of the partition 25 and the inner wall of the connecting pipe 24, and the liquid is collected.

[0033] The mounting mechanism 3 includes a limit block 31, a bolt 32, a positioning block 33 and a mounting hole 34. The limit block 31 is arranged in a circular array on the upper surface of the wire mesh demister 21, and the lower surface of the limit block 31 fits with the upper surface of the wire mesh demister 21. The limit block 31 is used to limit the upper surface of the wire mesh demister 21 to ensure the stability of the wire mesh demister 21. One end of the bolt 32 is slidably and interlacedly connected with the limit block 31, and one end of the bolt 32 is threadedly connected to the inner wall of the evaporator 1. By rotating and tightening the bolt 32, one end of the bolt 32 is rotatably connected to the inner wall of the evaporator 1, and the limit block 31 is squeezed and fixed. The top of the positioning block 33 is fixedly connected to the lower surface of the limit block 31, and the positioning block 33 moves with the limit block 31. The mounting holes 34 are arranged in a circular array on the wire mesh demister The upper surface of the device 21, the inner cavity of the mounting hole 34 is slidably inserted and connected with the positioning block 33, and the positioning block 33 is driven to slide and insert into the inner cavity of the mounting hole 34 by moving the limit block 31, so as to limit the wire mesh demister 21 so that it cannot rotate. A feed circulation pump 4 is arranged on one side of the evaporator 1, and the feed circulation pump 4 is electrically connected to the external power supply through an external first switch. The feed circulation pump 4 makes the DMF waste liquid circulate continuously between the evaporator 1 and the feed heater 5 to enhance the heating effect. A feed heater 5 is arranged on one side of the evaporator 1, and the feed heater 5 is electrically connected to the external power supply through an external second switch. The feed heater 5 uses the steam from the outer tube to heat the DMF waste liquid. The evaporator 1, the feed circulation pump 4 and the feed heater 5 are connected by a pipeline.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 utility model shall be included in the protection scope of the present utility model.

Claims

1. A waste liquid evaporation system, comprising: Evaporation tank (1); The invention is characterized in that it further comprises a separation mechanism (2), wherein the separation mechanism (2) is arranged in the inner cavity of the evaporation tank (1), and the separation mechanism (2) is used to form a filtering structure in the inner cavity of the evaporation tank (1) and to perform vapor-liquid separation; The mounting mechanism (3) is arranged on the separation mechanism (2), and the separation mechanism (2) is used to form a fixing mechanism on the separation mechanism (2) and to install and disassemble the separation mechanism (2).

2. A waste liquid evaporation system according to claim 1, characterized in that: The separation mechanism (2) comprises: A wire mesh demister (21), the wire mesh demister (21) being arranged in the inner cavity of the evaporation tank (1), the wire mesh demister (21) being used to filter the steam and liquid inside the evaporation tank (1); A fixing ring (22), the outer wall of the fixing ring (22) being fixedly connected to the inner wall of the evaporation tank (1), and the top end of the fixing ring (22) being in contact with the bottom end of the wire mesh demister (21); A feed pipe (23), wherein the outer wall of the bottom end of the feed pipe (23) is fixedly connected to the inner wall of the evaporation tank (1).

3. A waste liquid evaporation system according to claim 2, characterized in that: The separation mechanism (2) comprises: A connecting pipe (24), the bottom end of the connecting pipe (24) is fixedly connected to the top end of the feed pipe (23), and the top end of the connecting pipe (24) is fixedly connected to the bottom end of the fixing ring (22); A partition (25), the bottom end of which is fixedly connected to the inner wall of the connecting pipe (24); A drainage pipe (26), one end of the drainage pipe (26) is fixedly connected to the bottom of the connecting pipe (24), and the other end of the drainage pipe (26) is fixedly connected to the evaporation tank (1).

4. A waste liquid evaporation system according to claim 3, characterized in that: The mounting mechanism (3) comprises: Limit blocks (31), the limit blocks (31) are arranged in a ring array on the upper surface of the wire mesh demister (21), and the lower surface of the limit blocks (31) is in contact with the upper surface of the wire mesh demister (21); A bolt (32), one end of which is slidably and interlacedly connected to the limit block (31), and one end of which is threadedly connected to the inner wall of the evaporation tank (1).

5. A waste liquid evaporation system according to claim 4, characterized in that: The mounting mechanism (3) comprises: A positioning block (33), the top end of which is fixedly connected to the lower surface of the limiting block (31); The mounting holes (34) are arranged in a circular array on the upper surface of the wire mesh demister (21), and the inner cavity of the mounting holes (34) is slidably interlaced with the positioning block (33).

6. A waste liquid evaporation system according to claim 5, characterized in that: A feed circulation pump (4) is provided on one side of the evaporation tank (1), a feed heater (5) is provided on one side of the evaporation tank (1), and the evaporation tank (1), the feed circulation pump (4) and the feed heater (5) are connected via a pipeline.

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