Device for demulsifying emulsion and using method thereof

Abstract

The invention discloses a device and a method for demulsifying emulsion, and belongs to the technical field of chemical engineering, the device comprises a coagulation tank: the top of the coagulation tank is connected with a stirring assembly; an inner liquid inlet assembly and an outer liquid inlet assembly are connected in the coagulation tank, and the liquid outlet end of the inner liquid inlet assembly, the liquid outlet end of the outer liquid inlet assembly and the stirring assembly are concentrically arranged; the lower end of the side wall of the coagulation tank is connected with a sampling assembly for sampling; the bottom of the coagulation tank is fixedly connected with a discharging pipe; the bottom of the discharging pipe is fixedly connected with a three-way valve, the output end of the three-way valve is connected with a discharging end and a backflow assembly, and the liquid outlet end of the backflow assembly is located in the condensation groove and located below the outer end of the liquid outlet end of the outer liquid inlet assembly. Through the mode, the inner liquid inlet assembly is used for adding emulsion, the outer liquid inlet assembly is used for adding emulsion, a coagulant and the emulsion are subjected to hedging dispersion, meanwhile, the backflow assembly is used for pumping liquid to be circularly mixed, and precipitation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of chemical industry, and in particular to a device for emulsion demulsification and a use method thereof. Background Art

[0002] The existing production of fluorinated rubber mostly uses emulsion polymerization technology. The existing demulsification technology is to add a coagulant to the emulsion after polymerization and stir it to achieve demulsification. However, there are problems with demulsification: 1. The demulsification time is long; 2. The demulsification is not sufficient; 3. The colloid agglomerates after demulsification are large; 4. The particle size is uneven.

[0003] Based on this, the present invention designs a device for emulsion demulsification and a method of using the same to solve the above problems. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for emulsion demulsification and a method for using the same.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A device for emulsion demulsification, comprising a coagulation tank:

[0007] A stirring assembly for stirring is connected to the top of the coagulation tank;

[0008] An inner liquid inlet assembly for adding emulsion and an outer liquid inlet assembly for adding coagulant are connected in the coagulation tank, the liquid outlet end of the inner liquid inlet assembly is located inside the liquid outlet end of the outer liquid inlet assembly, and the liquid outlet end of the inner liquid inlet assembly is concentric with the liquid outlet end of the outer liquid inlet assembly and the stirring assembly;

[0009] A sampling assembly for sampling is connected to the lower end of the side wall of the condensation tank;

[0010] A feeding pipe is fixedly connected to the bottom of the condensation tank;

[0011] A three-way valve is fixedly connected to the bottom of the discharge pipe, and the output ends of the three-way valve are respectively connected to the discharge end and the reflux component, and the liquid outlet end of the reflux component is located in the condensation tank, and the liquid outlet end of the reflux component is located below the outer end of the liquid outlet end of the external liquid inlet component.

[0012] Furthermore, the stirring assembly includes a motor and a stirring structure. The motor is fixedly installed on the top of the condensation tank. The motor driving end is fixedly connected to the stirring structure, and the stirring structure is slidably connected to the inner wall of the condensation tank.

[0013] Furthermore, the external liquid inlet component includes a second pipe, a second annular pipe and a second spray hole. The condensation groove is fixedly connected to the second pipe, the liquid outlet end of the second pipe is fixedly connected to the second annular pipe, and the second spray hole is opened at the inner lower end of the second annular pipe.

[0014] Furthermore, the angle formed between the central axis of the second spray hole and the central axis of the stirring structure is thirty to sixty degrees.

[0015] Furthermore, the inner liquid inlet component includes a third pipe, a third annular pipe and a third spray hole. The condensation groove is fixedly connected to the third pipe, the liquid outlet end of the third pipe is fixedly connected to the third annular pipe, and a third spray hole is opened on the outer side of the third annular pipe.

[0016] Furthermore, the angle formed between the central axis of the third spray hole and the central axis of the stirring structure is thirty to sixty degrees, and the angle formed between the central axis of the third spray hole and the central axis of the second spray hole is ninety degrees.

[0017] Furthermore, the sampling assembly includes a cylinder, an outer tube, a sample outlet tube, a transverse groove, a sampling column, a spiral groove, a sampling hole, a sliding column, a sealing ring, a sealing circular plate and an annular plate. A groove is provided on the side wall of the condensation groove, an annular plate is fixedly connected to the inner wall of the groove, a sealing ring is clamped in the annular plate, the condensation groove is fixedly connected to the outer tube on the outer side of the groove, the end of the outer tube away from the condensation groove is fixedly connected to the cylinder, the cylinder driving end passes through the outer tube and is rotatably connected to the sampling column, the end of the sampling column away from the condensation groove is fixedly connected to the sliding column, and the inner wall of the outer tube away from the condensation groove A spiral groove is provided at the end of the spiral groove, a transverse groove is provided at the end of the spiral groove close to the condensation groove, the transverse groove and the spiral groove are fitted and slidably connected with the sliding column, a sampling hole is provided at the middle end of the sampling column, the sampling hole opening faces upward when the sliding column fits with the end of the spiral groove away from the condensation groove, and the sampling hole opening faces downward when the sliding column fits and contacts with the end of the transverse groove away from the condensation groove, the outer wall of the sampling column fits and slidably connects with the inner wall of the sealing ring, a sealing circular plate is fixedly connected to the end of the sampling column away from the cylinder, and a sample outlet tube is fixedly connected to the straight hole provided at the end of the outer cylinder close to the condensation groove;

[0018] The diameter of the sealing circular plate is smaller than the diameter of the groove.

[0019] Furthermore, the reflux component includes a reflux pipe, a liquid pump and a first pipeline. The reflux pipe is fixedly connected to the liquid outlet end of the feed pipe, the reflux pipe is fixedly connected to the liquid pump input end, the liquid pump output end is fixedly connected to the first pipeline, the liquid outlet end of the first pipeline is fixedly connected to the condensation tank, and the liquid outlet end of the first pipeline is located in the condensation tank.

[0020] A demulsification method for an emulsion demulsification device, comprising the following steps:

[0021] Step 1: The liquid pump pumps the coagulant in the coagulant storage device into the second pipe, and then into the second annular pipe, and is obliquely sprayed out from the second spray hole. The liquid pump pumps the emulsion in the emulsion storage device into the third pipe, and then into the third annular pipe, and is obliquely sprayed out from the third spray hole. The sprayed emulsion and the sprayed coagulant are in contact with each other;

[0022] Step 2: The motor of the stirring assembly drives the stirring structure to rotate, and the stirring structure rotates at a speed of 150R / min;

[0023] Step 3: While the stirring structure is stirring, the three-way valve opens the reflux pipe of the reflux component, and the liquid pump draws the liquid in the condensation tank into the first pipeline through the reflux pipe and the discharge pipe, and is ejected from the first annular pipe, which is conducive to the reciprocating circulation of the liquid.

[0024] Beneficial effects:

[0025] In the present invention, the inner liquid inlet component is used to add the emulsion, the outer liquid inlet component is used to add the emulsion, the coagulant and the emulsion are hedged and dispersed, and at the same time, the reflux component pumps the liquid for circulation and mixing to avoid precipitation; the demulsification process is more controllable, the quality of the obtained raw rubber is uniform, and the quality is improved; after the quality is improved, more than 50% of washing water is saved, the production cost is reduced, and the production technology is more green and environmentally friendly; at the same time, sampling is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A three-dimensional device for emulsion demulsification of the present invention Figure 1 ;

[0028] Figure 2 It is a front view of a device for emulsion demulsification of the present invention;

[0029] Figure 3 It is a left view of a device for emulsion demulsification of the present invention;

[0030] Figure 4 A three-dimensional device for emulsion demulsification of the present invention Figure 2 ;

[0031] Figure 5 For along Figure 2 AA direction cross-sectional view;

[0032] Figure 6 For along Figure 3 BB direction cross-sectional view;

[0033] Figure 7 Schematic diagram of the outer cylinder and its connection structure Figure 1 ;

[0034] Figure 8 Schematic diagram of the outer cylinder and its connection structure Figure 2 ;

[0035] Fig. 9 for Figure 5 Enlarged view of the structure at location C.

[0036] The numbers in the figure represent:

[0037] 1. Coagulation tank 2. Stirring component 21. Motor 22. Stirring structure 3. Feeding pipe 4. Discharging end 5. Three-way valve 6. Reflux component 61. Reflux pipe 62. Liquid pump 63. First pipeline 7. Sampling component 71. Cylinder 72. Outer cylinder 73. Sample outlet pipe 74. Horizontal groove 75. Sampling column 76. Spiral groove 77. Sampling hole 78. Sliding column 79. Sealing ring 710. Sealing circular plate 711. Annular plate 712. Groove 8. External liquid inlet component 81. Second pipeline 82. Second annular tube 83. Second spray hole 9. Internal liquid inlet component 91. Third pipeline 92. Third annular tube 93. Third spray hole. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention will be further described below in conjunction with the embodiments.

[0040] Embodiment 1

[0041] Please refer to the instruction manual Figure 1-9 , a device for emulsion demulsification, comprising a coagulation tank 1:

[0042] A stirring assembly 2 for stirring is connected to the top of the coagulation tank 1;

[0043] The coagulation tank 1 is connected with an inner liquid inlet component 9 for adding emulsion and an outer liquid inlet component 8 for adding coagulant, the liquid outlet end of the inner liquid inlet component 9 is located inside the liquid outlet end of the outer liquid inlet component 8, and the liquid outlet end of the inner liquid inlet component 9 and the liquid outlet end of the outer liquid inlet component 8 are concentrically arranged with the stirring component 2;

[0044] A sampling assembly 7 for sampling is connected to the lower end of the side wall of the condensation tank 1;

[0045] A feeding pipe 3 is fixedly connected to the bottom of the coagulation tank 1;

[0046] A three-way valve 5 is fixedly connected to the bottom of the discharge pipe 3, and the output ends of the three-way valve 5 are respectively connected to the discharge end 4 and the reflux component 6, and the liquid outlet end of the reflux component 6 is located in the condensation tank 1, and the liquid outlet end of the reflux component 6 is located below the outer end of the liquid outlet end of the external liquid inlet component 8.

[0047] The inner liquid inlet component 9 is used to add the emulsion, and the outer liquid inlet component 8 is used to add the coagulant. The coagulant and the emulsion are offset and dispersed. At the same time, the reflux component 6 pumps the liquid for circulation and mixing to avoid precipitation. The demulsification process is more controllable, and the quality of the obtained raw rubber is uniform and improved. After the quality is improved, more than 50% of washing water is saved, the production cost is reduced, and the production technology is more green and environmentally friendly. At the same time, sampling is convenient.

[0048] The stirring assembly 2 includes a motor 21 and a stirring structure 22. The motor 21 is fixedly installed on the top of the coagulation tank 1. The driving end of the motor 21 is fixedly connected to the stirring structure 22, and the stirring structure 22 is slidably connected to the inner wall of the coagulation tank 1.

[0049] The external liquid inlet assembly 8 comprises a second pipe 81, a second annular pipe 82 and a second spray hole 83. The condensation tank 1 is fixedly connected to the second pipe 81. The liquid outlet end of the second pipe 81 is fixedly connected to the second annular pipe 82. The second spray hole 83 is formed at the lower inner end of the second annular pipe 82.

[0050] The angle formed between the central axis of the second spray hole 83 and the central axis of the stirring structure 22 is thirty to sixty degrees;

[0051] The second pipeline 81 is connected to the coagulant storage device through a liquid pump;

[0052] The liquid pump pumps the coagulant in the coagulant storage device into the second pipe 81, then into the second annular pipe 82, and is sprayed out obliquely from the second spray hole 83;

[0053] The inner liquid inlet component 9 includes a third pipe 91, a third annular pipe 92 and a third spray hole 93. The condensation tank 1 is fixedly connected to the third pipe 91. The liquid outlet end of the third pipe 91 is fixedly connected to the third annular pipe 92. The third spray hole 93 is opened on the outer side of the third annular pipe 92.

[0054] The angle formed between the central axis of the third spray hole 93 and the central axis of the stirring structure 22 is 30-60 degrees, and the angle formed between the central axis of the third spray hole 93 and the central axis of the second spray hole 83 is 90 degrees;

[0055] The third pipeline 91 is connected to the emulsion storage device through a hydraulic pump;

[0056] The second annular tube 82 is arranged flush with the third annular tube 92

[0057] The diameters of the second spray hole 83 and the third spray hole 93 are less than 10 mm;

[0058] The diameters of the second spray hole 83 and the third spray hole 93 are less than 5 mm.

[0059] The liquid pump pumps the emulsion in the emulsion storage device into the third pipe 91, and then into the third annular pipe 92, and is obliquely sprayed out from the third spray hole 93. The sprayed emulsion and the sprayed coagulant are in contact with each other, which is conducive to full contact between the emulsion and the coagulant, saving demulsification time and improving production efficiency.

[0060] The sampling assembly 7 includes a cylinder 71, an outer cylinder 72, a sample outlet tube 73, a transverse groove 74, a sampling column 75, a spiral groove 76, a sampling hole 77, a sliding column 78, a sealing ring 79, a blocking circular plate 710 and an annular plate 711. A groove 712 is provided on the side wall of the condensation groove 1, and an annular plate 711 is fixedly connected to the inner wall of the groove 712. A sealing ring 79 is clamped in the annular plate 711. The condensation groove 1 is fixedly connected to the outer cylinder 72 on the outer side of the groove 712. The end of the outer cylinder 72 away from the condensation groove 1 is fixedly connected to the cylinder 71. The driving end of the cylinder 71 passes through the outer cylinder 72 and is rotatably connected to the sampling column 75. The end of the sampling column 75 away from the condensation groove 1 is fixedly connected to the sliding column 78. The inner wall of the outer cylinder 72 A spiral groove 76 is provided at the end away from the condensation groove 1, and a transverse groove 74 is provided at the end of the spiral groove 76 close to the condensation groove 1. The transverse groove 74 and the spiral groove 76 are fitted and slidably connected with the sliding column 78. A sampling hole 77 is provided at the middle end of the sampling column 75. When the sliding column 78 fits with the end of the spiral groove 76 away from the condensation groove 1, the sampling hole 77 opens upward. When the sliding column 78 fits and contacts with the end of the transverse groove 74 away from the condensation groove 1, the sampling hole 77 opens downward. The outer wall of the sampling column 75 fits and slidably connects with the inner wall of the sealing ring 79. The end of the sampling column 75 away from the cylinder 71 is fixedly connected with a blocking circular plate 710, and the straight hole formed at the end of the outer cylinder 72 close to the condensation groove 1 is fixedly connected with a sample outlet tube 73.

[0061] The diameter of the sealing circular plate 710 is smaller than the diameter of the groove 712;

[0062] When the telescopic end of the cylinder 71 is retracted, the sliding post 78 is in close contact with the end of the spiral groove 76 away from the condensation groove 1, and when the sliding post 78 is in contact with the end of the transverse groove 74 away from the condensation groove 1, the sampling hole 77 is located outside the condensation groove 1;

[0063] When demulsification occurs, the sliding post 78 contacts the end of the spiral groove 76 away from the condensation groove 1 when the telescopic end of the cylinder 71 is recovered, and the sealing circular plate 710 contacts the sealing ring 79. When sampling is required, the telescopic end of the cylinder 71 is extended, and the cylinder 71 drives the sampling post 75 to move toward the condensation groove 1. The sampling post 75 drives the sliding post 78 to move along the spiral groove 76. The sliding post 78 moves from the spiral groove 76 to the transverse groove 74. The sampling post 75 drives the sampling hole 77 to be set upward. The sliding post 78 continues to move toward the transverse groove 74. The sampling post 75 drives the sampling hole 77 to move into the condensation groove 1. The liquid in the condensation groove 1 enters The cylinder 71 is retracted and disposed in the sampling hole 77, and the sampling column 75 drives the sliding column 78 to move outward in the spiral groove 76. The sampling column 75 drives the sampling hole 77 to move to the outside of the condensation groove 1, and the sliding column 78 starts to move toward the spiral groove 76. The spiral groove 76 guides the sampling column 75 to rotate along the spiral groove 76. The spiral groove 76 drives the sampling hole 77 to rotate to a downward setting. The liquid in the sampling hole 77 flows toward the outer cylinder 72 and is then taken out from the sample outlet tube 73. At the same time, the sealing circular plate 710 is in contact with the sealing ring 79 to make the sealing ring 79 in contact and seal, which is convenient for automatic sampling and beneficial for practical use.

[0064] The reflux assembly 6 includes a reflux pipe 61, a liquid pump 62 and a first pipeline 63. The reflux pipe 61 is fixedly connected to the liquid outlet end of the feed pipe 3, the reflux pipe 61 is fixedly connected to the input end of the liquid pump 62, the output end of the liquid pump 62 is fixedly connected to the first pipeline 63, the liquid outlet end of the first pipeline 63 is fixedly connected to the condensation tank 1, and the liquid outlet end of the first pipeline 63 is located in the condensation tank 1. The first pipeline 63 is fixedly connected to the condensation tank 1;

[0065] When demulsification occurs, the three-way valve 5 opens to the reflux pipe 61 of the reflux assembly 6, and the liquid pump 62 pumps the liquid in the coagulation tank 1 into the first pipe 63 through the reflux pipe 61 and the feed pipe 3. After 63 is sprayed out, it is beneficial for the liquid to circulate back and forth to avoid precipitation.

[0066] The concentration of the coagulant is 0.3%-20%, preferably 0.5%-10%, and most preferably 1%-5%.

[0067] The coagulant is a salt or an acid. The salt includes but is not limited to sulfate, halogen salt, nitrate, etc., preferably one or a combination of two or more of aluminum sulfate, potassium aluminum sulfate, barium sulfate, magnesium sulfate, calcium chloride, aluminum chloride, magnesium chloride, potassium citrate, sodium tetraoxalate, etc.; the acid can be hydrochloric acid, nitric acid, acetic acid, citric acid, etc.

[0068] Embodiment 2, a demulsification method of an emulsion demulsification device, comprising the following steps:

[0069] Step 1: Potassium aluminum sulfate is selected as a coagulant, the coagulant concentration is 2%, the original solid content in the emulsion is 21%, the liquid pump pumps the coagulant in the coagulant storage device into the second pipe 81, then into the second annular pipe 82, and is obliquely sprayed from the second spray hole 83, the liquid pump pumps the emulsion in the emulsion storage device into the third pipe 91, then into the third annular pipe 92, and is obliquely sprayed from the third spray hole 93, and the sprayed emulsion and the sprayed coagulant are in contact with each other;

[0070] Step 2: The motor 21 of the stirring assembly 2 drives the stirring structure 22 to rotate, and the rotation speed of the stirring structure 22 is 150R / min;

[0071] Step 3: While the stirring structure 22 is stirring, the three-way valve 5 opens the reflux pipe 61 of the reflux component 6, and the liquid pump 62 pumps the liquid in the condensation tank 1 into the first pipe 63 through the reflux pipe 61 and the discharge pipe 3. After 63 is sprayed out, it is beneficial to the reciprocating circulation of the liquid. After condensation, it is replaced and washed with deionized water until the conductivity of the clean water is less than 5μS / cm.

[0072] Embodiment 3: Different from Embodiment 2, nitric acid is selected as the coagulant, and the concentration of nitric acid is 1%.

[0073] Embodiment 4: Different from Embodiment 2, the coagulant flows through the second annular tube 82 , and the emulsion flows through the third annular tube 92 .

[0074] Embodiment 5: Different from Embodiment 2, the concentration of the coagulant is 10%. 100 kg of fluororubber emulsion and 20 kg of coagulant solution are taken. The emulsion and the coagulant are injected into the coagulant tank 1 at the same time. After washing and drying, a small amount of white spots remain in the colloid.

[0075] Embodiment 6: Different from Embodiment 2, a 2% concentration coagulant solution is placed in the coagulant tank 1, and the coagulated emulsion is injected into the coagulant tank 1 through the second annular pipe 82 distribution pipe.

[0076] Comparative Example 1: First, 100 kg of emulsion was placed in a coagulation tank 1, and then 10 kg of 20% potassium aluminum sulfate solution was added to the emulsion. Stirring was started. After washing and drying, there were more white coagulant lumps in the raw rubber.

[0077] Comparative Example 2: 100 kg of 2% potassium aluminum sulfate solution was placed in coagulation tank 1, and then 100 kg of emulsion was quickly added using a pneumatic diaphragm pump, stirred and mixed, and after washing and drying, there were fewer white coagulant lumps in the raw rubber.

[0078] The above-mentioned embodiments and comparative examples were subjected to state and subsequent treatment, and the results were as follows:

[0079]

[0080]

[0081] The inner liquid inlet component 9 is used to add the coagulant, and the outer liquid inlet component 8 is used to add the emulsion. The coagulant and the emulsion are offset and dispersed. At the same time, the reflux component 6 pumps the liquid for circulation and mixing to avoid precipitation. The demulsification process is more controllable, and the quality of the obtained raw rubber is uniform and improved. After the quality is improved, more than 50% of washing water is saved, the production cost is reduced, and the production technology is more green and environmentally friendly. At the same time, sampling is convenient.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for emulsion demulsification, comprising a coagulation tank (1), characterized in that: The top of the coagulation tank (1) is connected to a stirring assembly (2) for stirring; An inner liquid inlet component (9) for adding emulsion and an outer liquid inlet component (8) for adding coagulant are connected inside the coagulation tank (1); the liquid outlet end of the inner liquid inlet component (9) is located inside the liquid outlet end of the outer liquid inlet component (8); the liquid outlet end of the inner liquid inlet component (9) and the liquid outlet end of the outer liquid inlet component (8) are arranged concentrically with the stirring component (2); A sampling assembly (7) for sampling is connected to the lower end of the side wall of the condensation tank (1); A feeding pipe (3) is fixedly connected to the bottom of the coagulation tank (1); A three-way valve (5) is fixedly connected to the bottom of the feed pipe (3); the output end of the three-way valve (5) is respectively connected to the feed end (4) and the reflux component (6); the liquid outlet end of the reflux component (6) is located in the coagulation tank (1); and the liquid outlet end of the reflux component (6) is located below the outer end of the liquid outlet end of the external liquid inlet component (8).

2. The device for emulsion demulsification according to claim 1, characterized in that: The stirring assembly (2) comprises a motor (21) and a stirring structure (22); the motor (21) is fixedly mounted on the top of the coagulation tank (1); the driving end of the motor (21) is fixedly connected to the stirring structure (22); and the stirring structure (22) is slidably connected to the inner wall of the coagulation tank (1).

3. The device for emulsion demulsification according to claim 2, characterized in that: The external liquid inlet component (8) comprises a second pipe (81), a second annular pipe (82) and a second spray hole (83); the condensation tank (1) is fixedly connected to the second pipe (81); the liquid outlet end of the second pipe (81) is fixedly connected to the second annular pipe (82); and the second spray hole (83) is formed at the inner lower end of the second annular pipe (82).

4. The device for emulsion demulsification according to claim 3, characterized in that: The angle formed between the central axis of the second spray hole (83) and the central axis of the stirring structure (22) is thirty to sixty.

5. The device for emulsion demulsification according to claim 4, characterized in that: The internal liquid inlet component (9) comprises a third pipeline (91), a third annular pipe (92) and a third spray hole (93); the condensation tank (1) is fixedly connected to the third pipeline (91); the liquid outlet end of the third pipeline (91) is fixedly connected to the third annular pipe (92); and the third spray hole (93) is provided on the outer side of the third annular pipe (92).

6. The device for emulsion demulsification according to claim 5, characterized in that: The angle formed between the central axis of the third spray hole (93) and the central axis of the stirring structure (22) is thirty to sixty degrees, and the angle formed between the central axis of the third spray hole (93) and the central axis of the second spray hole (83) is ninety degrees.

7. The device for emulsion demulsification according to claim 6, characterized in that: The sampling assembly (7) comprises a cylinder (71), an outer cylinder (72), a sample outlet tube (73), a transverse groove (74), a sampling column (75), a spiral groove (76), a sampling hole (77), a sliding column (78), a sealing ring (79), a sealing circular plate (710) and an annular plate (711). A groove (712) is provided on the side wall of the condensation groove (1). The inner wall of the groove (712) is fixedly connected to the annular plate (711). The sealing ring (79) is clamped inside the annular plate (711). The condensation groove (1) is fixedly connected to the outer cylinder (72) on the outside of the groove (712). The end of the outer cylinder (72) away from the condensation groove (1) is fixedly connected to the cylinder (71). The driving end of the cylinder (71) passes through the outer cylinder (72) and is rotatably connected to the sampling column (75). The end of the sampling column (75) away from the condensation groove (1) is fixedly connected to the sliding column (78). A spiral groove (76) is provided at the end of the inner wall of the cylinder (72) away from the condensation groove (1), a transverse groove (74) is provided at the end of the spiral groove (76) close to the condensation groove (1), the transverse groove (74) and the spiral groove (76) are fitted and slidably connected with the sliding column (78), a sampling hole (77) is provided at the middle end of the sampling column (75), when the sliding column (78) and the end of the spiral groove (76) away from the condensation groove (1) are fitted and contacted, the sampling hole (77) is opened upward, when the sliding column (78) and the end of the transverse groove (74) away from the condensation groove (1) are fitted and contacted, the sampling hole (77) is opened downward, the outer wall of the sampling column (75) is fitted and slidably connected with the inner wall of the sealing ring (79), the end of the sampling column (75) away from the cylinder (71) is fixedly connected with a blocking circular plate (710), and the straight hole provided at the end of the outer cylinder (72) close to the condensation groove (1) is fixedly connected with a sample outlet tube (73); The diameter of the sealing circular plate (710) is smaller than the diameter of the groove (712).

8. The device for emulsion demulsification according to claim 7, characterized in that: The reflux assembly (6) comprises a reflux pipe (61), a liquid pump (62) and a first pipeline (63); the reflux pipe (61) is fixedly connected to the liquid outlet end of the feed pipe (3); the reflux pipe (61) is fixedly connected to the input end of the liquid pump (62); the output end of the liquid pump (62) is fixedly connected to the first pipeline (63); the liquid outlet end of the first pipeline (63) is fixedly connected to the condensation tank (1); and the liquid outlet end of the first pipeline (63) is located in the condensation tank (1).

9. A demulsification method of the device for emulsion demulsification according to claim 9, characterized in that: The following steps are involved: Step 1: The liquid pump pumps the coagulant in the coagulant storage device into the second pipe (81), then into the second annular pipe (82), and is obliquely sprayed out from the second spray hole (83); the liquid pump pumps the emulsion in the emulsion storage device into the third pipe (91), then into the third annular pipe (92), and is obliquely sprayed out from the third spray hole (93), and the sprayed emulsion and the sprayed coagulant are in contact with each other; Step 2: The motor (21) of the stirring assembly (2) drives the stirring structure (22) to rotate, and the rotation speed of the stirring structure (22) is 150R / min; Step 3: While the stirring structure (22) is stirring, the three-way valve (5) opens the reflux pipe (61) of the reflux assembly (6), and the liquid pump (62) pumps the liquid in the condensation tank (1) into the first pipeline (63) through the reflux pipe (61) and the discharge pipe (3), and is ejected from (66) of the first annular pipe (64). After (66) is ejected, the liquid is facilitated to circulate back and forth.

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