Special nitrile rubber coagulation device

Abstract

The utility model provides a special nitrile rubber coagulation device which comprises a rubber cement coagulation tank, a static tank and a rubber scrap washing tank which are sequentially communicated, the tops of the rubber cement coagulation tank, the static tank and the rubber scrap washing tank are all communicated with a defoaming agent pipeline and a production water pipeline, and the top of the rubber cement coagulation tank is further communicated with a rubber cement pipeline and a coagulant pipeline. The bottoms of the rubber cement condensation tank and the rubber scrap washing tank are communicated with a low-pressure steam main pipe through a low-pressure steam pipeline a and a low-pressure steam pipeline b respectively, and the bottoms of the rubber cement condensation tank, the static tank and the rubber scrap washing tank are provided with a sewage discharge pipeline a, a sewage discharge pipeline c and a rubber scrap washing tank bottom washing water collecting pipeline respectively. And the tops of the rubber cement condensation tank, the static tank and the rubber scrap washing tank are respectively communicated with a tail gas recovery system pipeline through a rubber cement condensation tank tail gas discharge port, a static tank tail gas discharge port and a rubber scrap washing tank tail gas discharge port. The device disclosed by the utility model is reasonable in structure, good in rubber cement demulsification effect, high in condensation speed, high in equipment efficiency, small in size and low in investment.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsion-polymerized nitrile rubber devices, in particular to a special nitrile rubber coagulation device. Background Art

[0002] Special nitrile rubber is a nitrile rubber synthesized by emulsion polymerization using butadiene and acrylonitrile as monomers. The synthesis of nitrile rubber by emulsion polymerization has the advantages of controllable polymerization speed, flexible molecular weight adjustment, good reaction heat transfer and temperature control, low viscosity at high conversion rate, and stable dispersion system. However, compared with other polymerization methods, the particle precipitation process of emulsion polymerization is complicated, and a coagulant must be added to the latex to break the emulsion in order to form solid particles.

[0003] In the process of synthesizing special nitrile rubber by emulsion polymerization, there are many kinds of additives and large amounts of additives. Emulsifiers and water need to be added to form an emulsion system, initiators need to be added to initiate reactions, buffers need to be added to maintain the acid-base balance of the system, activators need to be added to form a redox circulation system, molecular regulators need to be added to adjust molecular weight and inhibit gel formation, antioxidants need to be added to prevent aging of raw rubber and vulcanized rubber, and defoamers need to be added to prevent latex coagulation and rubber particle stasis and foaming during washing. If the above additives are not removed cleanly in the rubber coagulation device, it will affect the product quality and performance, and will also cause corrosion to subsequent equipment and shorten the service life of the equipment.

[0004] The process of forming rubber particles goes through several stages, such as rubber coagulation, rubber particle stillness, and rubber scrap washing. Rubber coagulation process: the rubber from the mixing unit enters the rubber coagulation kettle, and the coagulant and defoaming agent are added. Under the action of mechanical stirring, the rubber coagulates into rubber particles with a particle size of 2 to 12 mm; the rubber particle stillness process: the rubber particle water coming out of the coagulation kettle is dehydrated by a fixed screen and enters the stillness tank. In the stillness tank, the remaining rubber is completely converted into rubber particles under the action of the agitator. The conversion rate of the rubber in the outlet rubber particle water can reach 100%; the rubber scrap washing process: a variety of additives are added to the rubber during the synthesis process. In the rubber scrap washing process, the additives remaining in the rubber scrap are washed to the standard of qualified products to avoid affecting the product quality.

[0005] After the above three important stages, the key link of the special nitrile rubber from liquid latex to solid particles is completed, ensuring the smooth progress of the subsequent rubber processing process. The amount of coagulant series added, concentration and the type and stirring speed of the agitator determine the coagulation speed of the slurry and the distribution of the particles. The length of the residence time of the particles in the slurry coagulation kettle and static tank determines the conversion rate of the particles. If the coagulant dosage and the stirring speed of the agitator are not well controlled, the slurry will not coagulate, the particles will be too small or too large, which will directly affect the product quality and yield. Utility Model Content

[0006] The utility model aims to provide a special nitrile rubber coagulation device, which has a reasonable structure, good slurry demulsification effect, fast coagulation speed, high equipment efficiency, small equipment size and low equipment investment under the same output.

[0007] The technical scheme adopted by the utility model is: a special nitrile rubber coagulation device, comprising a slurry coagulation tank, a stationary tank, and a rubber chip washing tank which are connected in sequence, the tops of the slurry coagulation tank, the stationary tank, and the rubber chip washing tank are connected with a defoaming agent pipeline and a production water pipeline, the top of the slurry coagulation tank is also connected with a slurry pipeline and a coagulant pipeline, the bottoms of the slurry coagulation tank and the rubber chip washing tank are connected with a low-pressure steam main pipe through a low-pressure steam pipeline a and a low-pressure steam pipeline b respectively, the bottoms of the slurry coagulation tank, the stationary tank, and the rubber chip washing tank are respectively provided with a sewage discharge pipeline a, a sewage discharge pipeline c, and a washing water collection pipeline for the bottom of the rubber chip washing tank, the tops of the slurry coagulation tank, the stationary tank, and the rubber chip washing tank are respectively connected with an exhaust gas recovery system pipeline through an exhaust gas discharge port of the slurry coagulation tank, an exhaust gas discharge port of the stationary tank, and an exhaust gas discharge port of the rubber chip washing tank.

[0008] The technical solution adopted by the utility model is also characterized by:

[0009] The fixed screen chute a at the glue particle water outlet of the glue coagulation tank is connected to the fixed screen a, the glue particle water outlet of the fixed screen a is connected to the stationary tank through the stationary tank chute, the glue particle water outlet of the stationary tank is connected to the fixed screen b through the fixed screen chute b, the glue particle water outlet of the fixed screen b is connected to the glue chip washing tank through the glue chip washing tank chute, the glue particle water outlet of the glue chip washing tank is connected to the fixed screen c through the fixed screen chute c, and the glue particle water outlet of the fixed screen c is connected to the extrusion dehydrator chute.

[0010] The tops of the fixed screen a, the fixed screen b and the fixed screen c are all connected to the tail gas recovery system pipeline through pipelines.

[0011] A sewage discharge pipeline b, a sewage discharge pipeline d, and a washing water collection pipeline for the fixed screen c are respectively arranged at the bottom of the fixed screen a, the fixed screen b, and the fixed screen c.

[0012] A glue coagulation tank agitator, a static tank agitator and a glue chip washing tank agitator are respectively arranged inside the glue coagulation tank, the static tank and the glue chip washing tank.

[0013] Two glue coagulation tank soda-water mixers are arranged inside the glue coagulation tank, distributed at 180°, and three glue chip washing tank soda-water mixers are arranged inside the glue chip washing tank, distributed at 120°.

[0014] The soda-water mixer of the glue condensation tank is connected to the low-pressure steam pipeline a, and the soda-water mixer of the glue crumb washing tank is connected to the low-pressure steam pipeline b.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a special nitrile rubber coagulation device, which has a reasonable structure, controls the coagulation dosage and the stirring speed of the agitator within a certain range, has a good demulsification effect of the slurry, a fast coagulation speed, high equipment efficiency, small equipment size and low equipment investment under the same output. The system adopts a series connection form of slurry coagulation, rubber particle stillness and rubber crumb washing. A defoamer is added to the tank top to prevent foam generation, and production water is added to supplement the lost water volume. The system temperature can be reduced at high temperatures. The tank bottom adopts a low-pressure steam port extending from the bottom of the cylinder into the tank, which is evenly distributed and equipped with a flange, connected to an immersion soda-water mixer, and the steam and the glue liquid are fully mixed. The system runs stably and controllably, and can be produced intermittently or continuously, which enhances the operational flexibility of the device. The equipment adopts a closed structure, and the tank top is connected to the exhaust gas treatment system to prevent odorous water vapor from entering the production plant, thereby improving the plant operation environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the special nitrile rubber coagulation device of the utility model.

[0018] In the figure: 1. defoamer pipeline, 2. production water pipeline, 3. glue pipeline, 4. coagulant pipeline, 5. low-pressure steam main, 6. low-pressure steam pipeline a, 7. low-pressure steam pipeline b, 8. glue coagulation tank, 9. glue coagulation tank agitator, 10. sewage discharge pipeline a, 11. fixed screen chute a, 12. fixed screen a, 13. static tank chute, 14. sewage discharge pipeline b, 15. static tank, 16. static tank agitator, 17. sewage discharge pipeline c, 18. fixed screen chute b, 19. fixed screen b, 20. glue 1. Sewage discharge pipeline d for chip washing tank, 21. Sewage discharge pipeline d for chip washing tank, 22. Glue chip washing tank, 23. Glue chip washing tank agitator, 24. Glue chip washing tank bottom washing water collecting pipeline, 25. Fixed screen chute c, 26. Fixed screen c, 27. Extrusion dehydrator chute, 28. Fixed screen c washing water collecting pipeline, 29. Tail gas recovery system pipeline, 30. Glue slurry coagulation tank soda-water mixer, 31. Glue chip washing tank soda-water mixer, 32. Glue slurry coagulation tank tail gas discharge port, 33. Stationary tank tail gas discharge port, 34. Glue chip washing tank tail gas discharge port. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0020] The utility model provides a special nitrile rubber coagulation device: Figure 1As shown, it includes a glue coagulation tank 8, a stationary tank 15, and a glue chip washing tank 22 which are connected in sequence. The fixed screen chute a11 at the glue particle water outlet of the glue coagulation tank 8 is connected to the fixed screen a12, the glue particle water outlet of the fixed screen a12 is connected to the stationary tank 15 through the stationary tank chute 13, the glue particle water outlet of the stationary tank 15 is connected to the fixed screen b19 through the fixed screen chute b18, the glue particle water outlet of the fixed screen b19 is connected to the glue chip washing tank 22 through the glue chip washing tank chute 20, the glue particle water outlet of the glue chip washing tank 22 is connected to the fixed screen c26 through the fixed screen chute c25, the glue particle water outlet of the fixed screen c26 is connected to the extrusion dehydrator chute 27, the tops of the fixed screens a12, b19, and c26 are connected to the exhaust gas recovery system pipeline 29 through pipelines, and the bottoms of the fixed screens a12, b19, and c26 are respectively provided with a sewage discharge pipeline b14, a sewage discharge pipeline d21, and a fixed screen c washing water collection pipeline 28.

[0021] The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are all connected to the defoaming agent pipeline 1 and the production water pipeline 2. The top of the slurry coagulation tank 8 is also connected to the slurry pipeline 3 and the coagulant pipeline 4. The bottoms of the slurry coagulation tank 8 and the scrap rubber washing tank 22 are connected to the low-pressure steam main 5 through the low-pressure steam pipeline a6 and the low-pressure steam pipeline b7 respectively. The bottoms of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively provided with a sewage discharge pipeline a10, a sewage discharge pipeline c17, and a scrap rubber washing tank bottom washing water collection pipeline 24. The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively connected to the exhaust gas recovery system pipeline 29 through the slurry coagulation tank exhaust gas discharge port 32, the stationary tank exhaust gas discharge port 33, and the scrap rubber washing tank exhaust gas discharge port 34.

[0022] The glue coagulation tank 8, the stationary tank 15 and the glue scrap washing tank 22 are respectively provided with a glue coagulation tank agitator 9, a stationary tank agitator 16 and a glue scrap washing tank agitator 23.

[0023] Two glue coagulation tank soda-water mixers 30 are arranged inside the glue coagulation tank 8 , and three glue chip washing tank soda-water mixers 31 are arranged inside the glue chip washing tank 22 .

[0024] The glue condensation tank steam-water mixer 30 is connected to the low-pressure steam pipeline a6, and the glue scrap washing tank steam-water mixer 31 is connected to the low-pressure steam pipeline b7.

[0025] The volume of the mortar coagulation tank 8 is 4.5~8.2m 3 , the operating temperature is 25-40℃, the operating pressure is normal pressure, the speed of the agitator blade is 200-420rpm; the volume of the static tank 15 is 20.2-37.0m 3The operating temperature is 30-65℃, the operating pressure is normal pressure, the speed of the agitator blade is 60-125rpm; the volume of the rubber chip washing tank 22 is 15.0-27.5m 3 , the operating temperature is 45-60°C, the operating pressure is normal pressure, and the agitator blade speed is 60-125rpm.

[0026] The temperature of the glue condensation tank 8 is controlled by low-pressure steam. Two low-pressure steam ports extend 200 mm from the bottom of the cylinder into the tank, distributed at 180°, and are equipped with flanges to be connected to an immersed soda-water mixer; the temperature of the glue chip washing tank 22 is controlled by low-pressure steam. Three low-pressure steam ports extend 200 mm from the bottom of the cylinder into the tank, distributed at 120°, and are equipped with flanges to be connected to an immersed soda-water mixer.

[0027] Tail gas discharge ports are left on the top of the slurry coagulation tank 8, fixed screen a12, stationary tank 15, fixed screen b19, rubber chip washing tank 22 and fixed screen c26. When the wind speed at the discharge port is controlled at 0.5-0.6m / s, odorous water vapor can be controlled not to overflow from the equipment.

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] A special nitrile rubber coagulation device, such as Figure 1 As shown, the main equipment is a glue coagulation tank 8, a fixed screen a12, a stationary tank 15, a fixed screen b19, a glue chip washing tank 22, and a fixed screen c26. The equipment is arranged in a stepped sequence. The defoaming agent pipeline 1, the production water pipeline 2, the glue pipeline 3, and the coagulant pipeline 4 are injected from the top of the glue coagulation tank 8. The glue particle water in the glue coagulation tank 8 flows into the fixed screen a12 through the upper fixed screen chute a11 for dehydration. The sewage at the bottom of the glue coagulation tank 8 flows to the ditch through the sewage discharge pipeline a10. The glue particle water after dehydration of the fixed screen a12 flows into the stationary tank 15 from the stationary tank chute 13. The sewage discharge pipeline b14 at the bottom of the fixed screen a12 is to the ditch. The fixed screen chute b18 on the upper part of the stationary tank 15 flows into the fixed screen b 19. The sewage at the bottom of the static tank 15 flows by gravity to the ditch through the sewage discharge pipeline c17; the glue chip washing tank chute 20 after dehydration by the fixed screen b19 flows by gravity into the glue chip washing tank 22, and the sewage discharge pipeline d21 at the bottom of the fixed screen b19 flows by gravity to the ditch; the glue particle water on the glue chip washing tank 22 flows by gravity into the fixed screen c26 from the fixed screen chute c25, and the sewage at the bottom of the glue chip washing tank 22 flows by gravity to the second slurry tank through the washing water collecting pipeline 24 at the bottom of the glue chip washing tank for recycling; the glue particle water after dehydration by the fixed screen c26 flows by gravity into the extrusion dehydrator from the extrusion dehydrator chute 27 for subsequent treatment, and the washing water at the bottom of the fixed screen c26 flows by gravity to the first slurry tank from the fixed screen c washing water collecting pipeline 28 for recycling.

[0031] Defoaming agent is added to the glue slurry coagulation tank 8, the static tank 15, and the glue scrap washing tank 22 to prevent foam from being generated in the tanks, which will affect the coagulation effect and product quality.

[0032] The produced water replenishes the water lost in the slurry coagulation tank 8, the static tank 15 and the slurry washing tank 22, and can also cool them down.

[0033] Low-pressure steam is introduced into the bottom of the glue condensation tank 8 to control the glue condensation temperature, and low-pressure steam is introduced into the bottom of the glue scrap washing tank 22 to control the glue scrap washing temperature.

[0034] The glue condensation tank 8, the static tank 15 and the glue scrap washing tank 22 are all provided with a power mechanism consisting of a motor and a reducer to drive an agitator, and the agitator is provided with a stirring blade.

[0035] The tail gas discharge port 32 of the glue condensation tank 8, the fixed screen a12, the tail gas discharge port 33 of the static tank 15, the fixed screen b19, the tail gas discharge port 34 of the glue chip washing tank 22, and the tail gas discharge port left on the fixed screen c26 are directly connected to the tail gas recovery system pipeline 29. A centrifugal fan is provided at the end of the tail gas recovery system pipeline 29, so that when the device is operating normally, there is a slight negative pressure above the glue condensation tank 8, the fixed screen a12, the static tank 15, the fixed screen b19, the glue chip washing tank 22, and the fixed screen c26 to prevent the water vapor with odor from diffusing into the production plant.

[0036] Example 2

[0037] Special nitrile rubber coagulation device: comprising a glue coagulation tank 8, a stationary tank 15, and a rubber chip washing tank 22 which are connected in sequence, the fixed screen chute a11 of the glue particle water outlet of the glue coagulation tank 8 is connected to the fixed screen a12, the glue particle water outlet of the fixed screen a12 is connected to the stationary tank 15 through the stationary tank chute 13, the glue particle water outlet of the stationary tank 15 is connected to the fixed screen b19 through the fixed screen chute b18, and the glue particle water outlet of the fixed screen b19 is connected to the glue chip washing tank 2 through the glue chip washing tank chute 20 2. The glue water outlet of the glue chip washing tank 22 is connected to the fixed screen c26 through the fixed screen chute c25. The glue water outlet of the fixed screen c26 is connected to the extrusion dehydrator chute 27. The tops of the fixed screen a12, the fixed screen b19 and the fixed screen c26 are connected to the exhaust gas recovery system pipeline 29 through pipes. The bottoms of the fixed screen a12, the fixed screen b19 and the fixed screen c26 are respectively provided with the sewage discharge pipeline b14, the sewage discharge pipeline d21 and the fixed screen c washing water collection pipeline 28.

[0038] The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are all connected to the defoaming agent pipeline 1 and the production water pipeline 2. The top of the slurry coagulation tank 8 is also connected to the slurry pipeline 3 and the coagulant pipeline 4. The bottoms of the slurry coagulation tank 8 and the scrap rubber washing tank 22 are connected to the low-pressure steam main 5 through the low-pressure steam pipeline a6 and the low-pressure steam pipeline b7 respectively. The bottoms of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively provided with a sewage discharge pipeline a10, a sewage discharge pipeline c17, and a scrap rubber washing tank bottom washing water collection pipeline 24. The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively connected to the exhaust gas recovery system pipeline 29 through the slurry coagulation tank exhaust gas discharge port 32, the stationary tank exhaust gas discharge port 33, and the scrap rubber washing tank exhaust gas discharge port 34.

[0039] The glue coagulation tank 8, the stationary tank 15 and the glue scrap washing tank 22 are respectively provided with a glue coagulation tank agitator 9, a stationary tank agitator 16 and a glue scrap washing tank agitator 23.

[0040] Two glue coagulation tank soda-water mixers 30 are arranged inside the glue coagulation tank 8 , and three glue chip washing tank soda-water mixers 31 are arranged inside the glue chip washing tank 22 .

[0041] The glue condensation tank steam-water mixer 30 is connected to the low-pressure steam pipeline a6, and the glue scrap washing tank steam-water mixer 31 is connected to the low-pressure steam pipeline b7.

[0042] Example 3

[0043] Special nitrile rubber coagulation device: comprising a glue coagulation tank 8, a stationary tank 15, and a rubber chip washing tank 22 which are connected in sequence, the fixed screen chute a11 of the glue particle water outlet of the glue coagulation tank 8 is connected to the fixed screen a12, the glue particle water outlet of the fixed screen a12 is connected to the stationary tank 15 through the stationary tank chute 13, the glue particle water outlet of the stationary tank 15 is connected to the fixed screen b19 through the fixed screen chute b18, and the glue particle water outlet of the fixed screen b19 is connected to the glue chip washing tank 2 through the glue chip washing tank chute 20 2. The glue water outlet of the glue chip washing tank 22 is connected to the fixed screen c26 through the fixed screen chute c25. The glue water outlet of the fixed screen c26 is connected to the extrusion dehydrator chute 27. The tops of the fixed screen a12, the fixed screen b19 and the fixed screen c26 are connected to the exhaust gas recovery system pipeline 29 through pipes. The bottoms of the fixed screen a12, the fixed screen b19 and the fixed screen c26 are respectively provided with the sewage discharge pipeline b14, the sewage discharge pipeline d21 and the fixed screen c washing water collection pipeline 28.

[0044] The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are all connected to the defoaming agent pipeline 1 and the production water pipeline 2. The top of the slurry coagulation tank 8 is also connected to the slurry pipeline 3 and the coagulant pipeline 4. The bottoms of the slurry coagulation tank 8 and the scrap rubber washing tank 22 are connected to the low-pressure steam main 5 through the low-pressure steam pipeline a6 and the low-pressure steam pipeline b7 respectively. The bottoms of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively provided with a sewage discharge pipeline a10, a sewage discharge pipeline c17, and a scrap rubber washing tank bottom washing water collection pipeline 24. The tops of the slurry coagulation tank 8, the stationary tank 15, and the scrap rubber washing tank 22 are respectively connected to the exhaust gas recovery system pipeline 29 through the slurry coagulation tank exhaust gas discharge port 32, the stationary tank exhaust gas discharge port 33, and the scrap rubber washing tank exhaust gas discharge port 34.

[0045] The glue coagulation tank 8, the stationary tank 15 and the glue scrap washing tank 22 are respectively provided with a glue coagulation tank agitator 9, a stationary tank agitator 16 and a glue scrap washing tank agitator 23.

[0046] Two glue coagulation tank soda-water mixers 30 are arranged inside the glue coagulation tank 8 , and three glue chip washing tank soda-water mixers 31 are arranged inside the glue chip washing tank 22 .

[0047] The glue condensation tank steam-water mixer 30 is connected to the low-pressure steam pipeline a6, and the glue scrap washing tank steam-water mixer 31 is connected to the low-pressure steam pipeline b7.

[0048] The temperature of the glue condensation tank 8 is controlled by low-pressure steam. Two low-pressure steam ports extend 200 mm from the bottom of the cylinder into the tank, distributed at 180°, and are equipped with flanges to be connected to an immersed soda-water mixer; the temperature of the glue chip washing tank 22 is controlled by low-pressure steam. Three low-pressure steam ports extend 200 mm from the bottom of the cylinder into the tank, distributed at 120°, and are equipped with flanges to be connected to an immersed soda-water mixer.

[0049] The special nitrile rubber coagulation device of the utility model has the following advantages:

[0050] 1. The coagulation system adopts the type of three tanks in series, forming continuous production of slurry coagulation, rubber particle stillness and rubber scrap washing, completing the process of rapid slurry coagulation, complete soap liquid conversion and thorough rubber particle washing, which not only improves production efficiency but also ensures product quality.

[0051] 2. Two low-pressure steam inlets distributed at 180° are set at the bottom of the cylinder of the slurry coagulation tank, and three low-pressure steam inlets distributed at 120° are set at the bottom of the cylinder of the rubber chip washing tank. An immersed steam-water mixer is set at the steam inlet in the tank to mix the steam and the rubber particle water evenly, avoiding the vibration of the tank caused by direct contact between the steam and the rubber particle water.

[0052] 3. The agitator of the slurry coagulation tank adopts a special structure. The slurry speed is controlled between 200 and 420 rpm, making it easier for the slurry to coagulate into particles. The particle size of the particles is controlled between 2 and 12 mm.

[0053] 4. The slurry coagulation tank, static tank and rubber chip washing tank adopt a closed design, and the top is directly connected to the exhaust pipeline to prevent the odorous water vapor from diffusing into the production plant.

Claims

1. Special nitrile rubber coagulation device, characterized in that: The invention comprises a glue coagulation tank (8), a stationary tank (15), and a glue scrap washing tank (22) which are connected in sequence. The tops of the glue coagulation tank (8), the stationary tank (15), and the glue scrap washing tank (22) are connected to a defoaming agent pipeline (1) and a production water pipeline (2). The top of the glue coagulation tank (8) is also connected to a glue pipeline (3) and a coagulant pipeline (4). The bottoms of the glue coagulation tank (8) and the glue scrap washing tank (22) are connected to a low-pressure steam main pipeline (6) and a low-pressure steam pipeline (7) respectively. (5) are connected, and the bottoms of the slurry coagulation tank (8), the stationary tank (15), and the scrap rubber washing tank (22) are respectively provided with a sewage discharge pipeline a (10), a sewage discharge pipeline c (17), and a scrap rubber washing tank bottom washing water collection pipeline (24); the tops of the slurry coagulation tank (8), the stationary tank (15), and the scrap rubber washing tank (22) are respectively connected to the tail gas recovery system pipeline (29) through the slurry coagulation tank tail gas discharge port (32), the stationary tank tail gas discharge port (33), and the scrap rubber washing tank tail gas discharge port (34).

2. The special nitrile rubber coagulation device according to claim 1, characterized in that: The fixed screen chute a (11) at the colloid water outlet of the slurry coagulation tank (8) is connected to a fixed screen a (12); the colloid water outlet of the fixed screen a (12) is connected to a stationary tank (15) via a stationary tank chute (13); the colloid water outlet of the stationary tank (15) is connected to a fixed screen b (19) via a fixed screen chute b (18); the colloid water outlet of the fixed screen b (19) is connected to a colloid washing tank (22) via a colloid washing tank chute (20); the colloid water outlet of the colloid washing tank (22) is connected to a fixed screen c (26) via a fixed screen chute c (25); the colloid water outlet of the fixed screen c (26) is connected to an extrusion dehydrator chute (27).

3. The special nitrile rubber coagulation device according to claim 2, characterized in that: The tops of the fixed screen a (12), the fixed screen b (19), and the fixed screen c (26) are all connected to the tail gas recovery system pipeline (29) through pipelines.

4. The special nitrile rubber coagulation device according to claim 2, characterized in that: The bottoms of the fixed screen a (12), the fixed screen b (19), and the fixed screen c (26) are respectively provided with a sewage discharge pipeline b (14), a sewage discharge pipeline d (21), and a fixed screen c washing water collection pipeline (28).

5. The special nitrile rubber coagulation device according to claim 1, characterized in that: A glue coagulation tank agitator (9), a static tank agitator (16) and a glue chip washing tank agitator (23) are respectively arranged inside the glue coagulation tank (8), the static tank (15) and the glue chip washing tank (22).

6. The special nitrile rubber coagulation device according to claim 1, characterized in that: The glue coagulation tank (8) is provided with two glue coagulation tank soda-water mixers (30) distributed at 180°, and the glue chip washing tank (22) is provided with three glue chip washing tank soda-water mixers (31) distributed at 120°.

7. The special nitrile rubber coagulation device according to claim 6, characterized in that: The glue condensation tank steam-water mixer (30) is connected to the low-pressure steam pipeline a (6), and the glue scrap washing tank steam-water mixer (31) is connected to the low-pressure steam pipeline b (7).

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