Epoxy chloropropane production with heat tracing wastewater utilization device

Abstract

This invention relates to the field of wastewater recycling technology, specifically to a device for utilizing heated wastewater from epichlorohydrin production. The device includes a sedimentation tank, a collection tank, a recycling mechanism, and a filtration mechanism. The collection tank is fixedly connected to the interior of the sedimentation tank via a mounting bracket. The recycling mechanism is located inside the collection tank. A filtration mechanism is located below the sedimentation tank. A feed pipe is located at one end of the sedimentation tank. The recycling mechanism includes heating plates. Heating plates are equidistantly fixed to the inner bottom wall of the storage tank. Adding coagulant allows for preliminary treatment of the wastewater. The heating plates heat the purified water in the collection tank. Simultaneously, the reciprocating movement of the stirring plate and the rotation of the auxiliary stirring blades accelerate the heating rate of the purified water, improving heating efficiency and effectiveness. The tank door can be opened to clean large particles of impurities after compression. The rotating cam in the filtration mechanism can expand the filter blocks, increasing the impurity capacity, and also compress the filter blocks to clean large particles of impurities, reducing the frequency of manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of wastewater recycling equipment, specifically to a device for utilizing heat-traced wastewater from epichlorohydrin production. Background Technology

[0002] Epichlorohydrin, as an important organic chemical raw material and fine chemical product, generates a large amount of wastewater during its production process. This wastewater mainly comes from the residual liquid discharged from the cyclization tower and contains highly toxic organic chlorides such as epichlorohydrin and dichloropropanol, as well as general organic substances such as glycerol, glycidol, and polyglycerol, and inorganic substances such as sodium hydroxide and sodium chloride.

[0003] Heat tracing wastewater undergoes various treatment processes, including flocculation and sedimentation. However, this process results in the presence of large particulate impurities in the wastewater. During filtration, these large particles quickly accumulate on the filter media, reducing filtration efficiency and requiring frequent cleaning, thus increasing labor costs and equipment maintenance frequency. Furthermore, the wastewater contains a significant amount of heat, which is typically utilized by heating the purified water with heating rods. The purified water inside the storage tank cannot be heated quickly enough. Therefore, it is necessary to propose a device for utilizing heat tracing wastewater from epichlorohydrin production. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a device for utilizing heat-traced wastewater from epichlorohydrin production. In order to solve the aforementioned problems, this invention proposes a device for utilizing heat-traced wastewater from epichlorohydrin production, which solves the problem that in existing filtration methods, large particles of impurities easily accumulate rapidly on the surface of the filter block, reducing filtration efficiency and requiring frequent cleaning, thus increasing labor costs and equipment maintenance frequency.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a device for utilizing heat-tracing wastewater from epichlorohydrin production, including a sedimentation tank, a collection tank, a recovery mechanism, and a filtration mechanism. The collection tank is fixedly connected to the inside of the sedimentation tank by a mounting bracket. The collection tank is equipped with a recovery mechanism inside. The filtration mechanism is located below the sedimentation tank. A feed pipe is provided at one end of the sedimentation tank.

[0006] The recycling mechanism includes a heating plate. The heating plate is fixedly connected at equal intervals to the inner bottom wall of the collection tank. The heating plate extends through the collection tank to the outside. A first rotating rod is rotatably connected to the inner wall of the collection tank. A sliding rod is fixedly connected to the inner wall of the collection tank below the first rotating rod. A stirring plate is slidably connected at equal intervals to the outer walls of the first rotating rod and the sliding rod. A protrusion is fixedly connected to the outer wall of the stirring plate outside the first rotating rod. A pusher is fixedly connected to the outer wall of the first rotating rod on one side of the protrusion. A cavity is opened through the interior of the stirring plate. A drive rod is rotatably connected to the inner wall of the cavity. One end of the drive rod extends to the outside of the stirring plate and is fixedly connected to an auxiliary stirring blade.

[0007] Specifically, the filtration mechanism includes a storage tank, a discharge pipe fixedly connected to the upper surface of the storage tank, one end of the discharge pipe extending into the storage tank and equipped with a valve, an mounting block fixedly connected to the inner wall of the discharge pipe, a symmetrically formed sliding groove on the lower surface of the mounting block, a slider slidably connected to the inner wall of the sliding groove, one end of the slider extending out of the sliding groove and rotatably connected to a filter block, two filter blocks rotatably connected and arranged in a V shape, a second rotating rod rotatably connected to the inner wall of the discharge pipe below the filter block, a cam fixedly connected to the outer wall of the second rotating rod, and the mounting block being arranged in an inclined position.

[0008] Specifically, an inlet pipe is fixedly connected to the inner wall of one end of the collection tank, and an outlet pipe is fixedly connected to the inner wall of the end of the collection tank away from the inlet pipe. One end of both the inlet pipe and the outlet pipe extends through to the outside of the sedimentation tank and is equipped with a valve.

[0009] Specifically, a drive tooth block is fixedly connected to the outer wall of one end of the drive rod located in the cavity, and tooth grooves are equidistantly opened through the outer wall of the slide rod. The drive tooth block meshes with the tooth grooves. A stop block is fixedly connected to the inner wall of one end of the slide rod on one side of the stirring plate. A first spring is fixedly connected to the inner wall of one side of the stop block, and the other end of the first spring is fixedly connected to the stop block.

[0010] Specifically, a first drive motor is fixedly connected to one side of the outer wall of the sedimentation tank, and the output end of the first drive motor is fixedly connected to the first rotating rod through a coupling.

[0011] Specifically, a second drive motor is fixedly connected to one side of the outer wall of the feeding pipe, and the output end of the second drive motor is fixedly connected to the second rotating rod. A second spring is fixedly connected to one side of the inner wall of the slide, and the other end of the second spring abuts against the slider.

[0012] Specifically, the outer wall of the discharge pipe has an opening on one side and a sealed door is hinged to it; the outer walls of both sides of the filter block are equipped with sealing blocks; and the storage tank has a discharge pipe at one end.

[0013] The present invention also provides a device for utilizing heat tracing wastewater from epichlorohydrin production, comprising the following steps: First, the heat tracing wastewater is fed into a sedimentation tank through a feed pipe, and a coagulant is added to coagulate the suspended solids, colloidal substances and dissolved substances in the heat tracing wastewater in the sedimentation tank into large particles to achieve the purpose of water purification.

[0014] The second step is to introduce purified water into the collection tank through the inlet pipe, heat the purified water in the collection tank through the heating plate, and then discharge the heated purified water through the outlet pipe.

[0015] The third step involves the flocculated wastewater entering the storage tank through the feed pipe. The filter blocks filter the wastewater and block large particles of impurities. The sealed door can be opened to clean the large particles of impurities.

[0016] The beneficial effects of this invention are:

[0017] (1) The device for utilizing heated wastewater in epichlorohydrin production according to the present invention pours heated wastewater and coagulant into a sedimentation tank through a feed pipe, pours water into a collection tank through a water inlet pipe, and transfers heat from the heated wastewater to the collection tank through a heating plate. The first drive motor is started to drive the first rotating rod and push block to rotate. The push block pushes the stirring blade to move left and right. The tooth groove drives the drive tooth block, drive rod and auxiliary stirring blade to rotate. The stirring blade and auxiliary stirring blade stir the purified water in different directions. The addition of coagulant can pre-treat the wastewater. The heating plate heats the purified water in the collection tank. At the same time, the reciprocating movement of the stirring plate and the rotation of the auxiliary stirring blade can accelerate the heating speed of the purified water and improve the heating efficiency and effect.

[0018] (2) The wastewater utilization device for epichlorohydrin production described in this invention discharges the treated wastewater into the storage tank through the discharge pipe. The filter block filters large particulate impurities. The large particulate impurities accumulate on the filter block. The second rotating rod is started to drive the cam to rotate. The cam drives the filter block to squeeze the large particulate impurities. The box door can be opened to clean the squeezed large particulate impurities. The rotation of the cam in the filter mechanism can expand the filter block to increase the impurity capacity and squeeze the filter block to clean the large particulate impurities, reducing the frequency of manual cleaning. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a partial cross-sectional schematic diagram of the device for utilizing heat-traced wastewater from epichlorohydrin production provided by the present invention.

[0021] Figure 2 This is a front view schematic diagram of the device for utilizing heat-traced wastewater from epichlorohydrin production provided by the present invention.

[0022] Figure 3 A cross-sectional view of the collection tank of the epichlorohydrin production wastewater utilization device provided by the present invention.

[0023] Figure 4 A front view schematic diagram of the first rotating rod and sliding rod of the epichlorohydrin production heat tracing wastewater utilization device provided by the present invention;

[0024] Figure 5 A cross-sectional view of the storage tank of the epichlorohydrin production wastewater utilization device provided by the present invention.

[0025] Figure 6 A cross-sectional schematic diagram of the feed pipe of the epichlorohydrin production wastewater utilization device provided by the present invention.

[0026] Figure 7 This is a front view schematic diagram of the protruding block and the pusher block of the device for utilizing heated wastewater in epichlorohydrin production provided by the present invention.

[0027] In the diagram: 1. Sedimentation tank; 2. Collection tank; 3. Recycling mechanism; 31. Heating plate; 32. First rotating rod; 33. Sliding rod; 34. Stirring plate; 35. Protruding block; 36. Push block; 37. Drive rod; 38. Auxiliary stirring blade; 4. Filtration mechanism; 41. Storage tank; 42. Discharge pipe; 43. Mounting block; 44. Sliding block; 45. Filter block; 46. Second rotating rod; 47. Cam; 5. Inlet pipe; 6. Outlet pipe; 7. Drive tooth block; 8. Stop block; 9. First spring; 10. First drive motor; 11. Second drive motor; 12. Second spring; 13. Sealed door. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figures 1-7 As shown, the present invention provides the following technical solution:

[0030] Example 1: A device for utilizing heat-traced wastewater from epichlorohydrin production includes a sedimentation tank 1, a collection tank 2, a recovery mechanism 3, and a filtration mechanism 4. The collection tank 2 is fixedly connected to the inside of the sedimentation tank 1 via a mounting bracket. The recovery mechanism 3 is located inside the collection tank 2. The filtration mechanism 4 is located below the sedimentation tank 1. A feed pipe is located at one end of the sedimentation tank 1.

[0031] In use, the heated wastewater enters the sedimentation tank 1 through the feed pipe, and a coagulant is added to coagulate the suspended solids, colloidal substances and dissolved substances in the wastewater into large particles. The purified water enters the collection tank 2 through the inlet pipe 5, and the purified water in the collection tank 2 is heated by the heating plate 31. The heated purified water is discharged through the outlet pipe 6. The flocculated wastewater enters the storage tank 41 through the discharge pipe 42. The filter block 45 filters the wastewater and blocks large particulate impurities. The sealed box door 13 can be opened to clean the large particulate impurities.

[0032] Example 2: The technical solutions in this example that differ from Example 1 include:

[0033] The recycling mechanism 3 includes a heating plate 31. The heating plate 31 is fixedly connected at equal intervals to the inner bottom wall of the collection tank 2. The heating plate 31 extends through to the outside of the collection tank 2. The inner wall of the collection tank 2 is rotatably connected to a first rotating rod 32. The inner wall of the collection tank 2 is fixedly connected to a sliding rod 33 below the first rotating rod 32. The outer walls of the first rotating rod 32 and the sliding rod 33 are slidably connected at equal intervals to a stirring plate 34. The outer wall of the stirring plate 34 is fixedly connected to a protrusion 35 outside the first rotating rod 32. The outer wall of the first rotating rod 32 is fixedly connected to a push block 36 on one side of the protrusion 35. A cavity is opened through the interior of the stirring plate 34. The inner wall of the cavity is rotatably connected to a drive rod 37. One end of the drive rod 37 extends to the outside of the stirring plate 34 and is fixedly connected to an auxiliary stirring blade 38.

[0034] The filtration mechanism 4 includes a storage tank 41. A discharge pipe 42 is fixedly connected to the upper surface of the storage tank 41. One end of the discharge pipe 42 extends through into the storage tank 41 and is equipped with a valve. An installation block 43 is fixedly connected to the inner wall of the discharge pipe 42. A sliding groove is symmetrically opened through the lower surface of the installation block 43. A slider 44 is slidably connected to the inner wall of the sliding groove. One end of the slider 44 extends out of the sliding groove and is rotatably connected to a filter block 45. Two filter blocks 45 are rotatably connected and arranged in a V shape. A second rotating rod 46 is rotatably connected to the inner wall of the discharge pipe 42 below the filter block 45. A cam 47 is fixedly connected to the outer wall of the second rotating rod 46. The installation block 43 is arranged in an inclined position.

[0035] In use, both the first drive motor 10 and the second drive motor 11 are connected to an external drive source via a controller. Starting the first drive motor 10 causes the first rotating rod 32 and the push block 36 to rotate. When the push block 36 rotates to the protruding end of the protruding block 35, it pushes the protruding block 35 and the stirring plate 34 towards the stop block 8, compressing the first spring 9. When the push block 36 rotates to the recessed end of the protruding block 35, the first spring 9 pushes the stirring plate 34 away from the stop block 8, causing the stirring plate 34 to reciprocate and stir the purified water in the collection tank 2, accelerating the heating process. As the stirring plate 34 moves, it drives the toothed block 7 to move, and the toothed block 7 and the drive... The rod 37 and auxiliary stirring blade 38 rotate to increase the stirring effect. When large particles of impurities accumulate on the surface of the filter block 45, the second drive motor 11, the second rotating rod 46, and the cam 47 are started to rotate. The protruding part of the cam 47 pushes the filter block 45 and the slider 44 to move upward and compress the second spring 12, which opens the filter block 45 and increases the number of large particles of impurities on the surface of the filter block 45. When the concave part of the cam 47 moves to the lower end of the filter block 45, the second spring 12 pushes the slider 44 to move downward. The slider 44 pushes the filter block 45 to gradually form a V-shape. The filter block 45 squeezes the large particles of impurities on the surface. The sealed box door 13 can be opened to clean the squeezed large particles of impurities.

[0036] Example 3: The technical solutions in this example that differ from those in Example 2 include:

[0037] The inner wall of one end of the collection tank 2 is fixedly connected to an inlet pipe 5, and the inner wall of the end of the collection tank 2 away from the inlet pipe 5 is fixedly connected to an outlet pipe 6. One end of the inlet pipe 5 and the outlet pipe 6 extends through to the outside of the sedimentation tank 1 and is equipped with a valve, so that the purified water can be poured into the collection tank 2 using the inlet pipe 5 and the heated purified water can be discharged through the collection tank 2.

[0038] Among them, the outer wall of one end of the drive rod 37 located in the cavity is fixedly connected to the drive tooth block 7, and the outer wall of the slide rod 33 is provided with tooth grooves at equal intervals. The drive tooth block 7 meshes with the tooth grooves. The inner wall of one end of the slide rod 33 is fixedly connected to a stop block 8 on one side of the stirring plate 34. A first spring 9 is fixedly connected to the inner wall of one side of the stop block 8. The other end of the first spring 9 is fixedly connected to the stop block 8. The stop block 8 is round, which makes it easy to use the first spring 9 to push the stirring plate 34 to reset.

[0039] The sedimentation tank 1 has a first drive motor 10 fixedly connected to one side of its outer wall. The output end of the first drive motor 10 is fixedly connected to the first rotating rod 32 through a coupling, so that the first drive motor 10 can drive the first rotating rod 32 to rotate.

[0040] The second drive motor 11 is fixedly connected to one side of the outer wall of the feeding pipe 42. The output end of the second drive motor 11 is fixedly connected to the second rotating rod 46. The second spring 12 is fixedly connected to one side of the inner wall of the slide. The other end of the second spring 12 abuts against the slider 44. Both the slide and the slider 44 are T-shaped, which makes it easy to use the second spring 12 to push the slider 44 to move in the slide.

[0041] The material discharge pipe 42 has an opening on one side of its outer wall and is connected to a sealed box door 13 by a hinge. Both sides of the filter block 45 have sealed blocks. One end of the storage tank 41 has a discharge pipe. The sealed blocks are rectangular, which makes it easy to open the sealed box door 13 to clean large particles of impurities on the surface of the filter block 45 and to discharge the pre-treated wastewater using the discharge pipe.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for utilizing heat-traced wastewater from epichlorohydrin production, comprising a sedimentation tank (1), a collection tank (2), a recovery mechanism (3), and a filtration mechanism (4), wherein the collection tank (2) is fixedly connected to the interior of the sedimentation tank (1) via a mounting bracket, the recovery mechanism (3) is provided inside the collection tank (2), the filtration mechanism (4) is provided below the sedimentation tank (1), and a feed pipe is provided at one end of the sedimentation tank (1); Its features are: The recycling mechanism (3) includes a heating plate (31). The heating plate (31) is fixedly connected at equal intervals to the inner bottom wall of the collection tank (2). The heating plate (31) extends through to the outside of the collection tank (2). The heating plate (31) conducts heat from the heated wastewater to the inside of the collection tank (2). A first rotating rod (32) is rotatably connected to the inner wall of the collection tank (2). A sliding rod (33) is fixedly connected to the inner wall of the collection tank (2) below the first rotating rod (32). The outer walls of the first rotating rod (32) and the sliding rod (33) are connected together. A stirring plate (34) is equidistantly slidably connected. A protrusion (35) is fixedly connected to the outer wall of the stirring plate (34) on the outside of the first rotating rod (32). A push block (36) is fixedly connected to the outer wall of the first rotating rod (32) on one side of the protrusion (35). When the push block (36) rotates to the protruding end of the protrusion (35), the push block (36) pushes the protrusion (35) and the stirring plate (34) toward the stop block (8) and compresses the first spring (9). When the push block (36) rotates to the recessed end of the protrusion (35), The first spring (9) pushes the stirring plate (34) to move away from the stop block (8). The stirring plate (34) has a cavity through it. The inner wall of the cavity is rotatably connected to a drive rod (37). One end of the drive rod (37) extends to the outside of the stirring plate (34) and is fixedly connected to an auxiliary stirring blade (38). One end of the collection tank (2) is fixedly connected to a water inlet pipe (5). The inner wall of the end of the collection tank (2) away from the water inlet pipe (5) is fixedly connected to a water outlet pipe (6). The water inlet pipe (5) and the water outlet pipe... One end of each tube (6) extends through to the outside of the sedimentation tank (1) and is equipped with a valve. The outer wall of the end of the drive rod (37) located in the cavity is fixedly connected to a drive tooth block (7). The outer wall of the slide rod (33) is provided with tooth grooves at equal intervals. The drive tooth block (7) meshes with the tooth grooves. The inner wall of one end of the slide rod (33) is fixedly connected to a stop block (8) on one side of the stirring plate (34). The inner wall of one side of the stop block (8) is fixedly connected to a first spring (9). The other end of the first spring (9) is fixedly connected to the stop block (8).

2. The device for utilizing heat-traced wastewater from epichlorohydrin production according to claim 1, characterized in that: The filtering mechanism (4) includes a storage tank (41), a discharge pipe (42) is fixedly connected to the upper surface of the storage tank (41), one end of the discharge pipe (42) extends through into the storage tank (41) and is provided with a valve, an installation block (43) is fixedly connected to the inner wall of the discharge pipe (42), a sliding groove is symmetrically opened through the lower surface of the installation block (43), a slider (44) is slidably connected to the inner wall of the sliding groove, one end of the slider (44) extends out of the sliding groove and is rotatably connected to a filter block (45), two filter blocks (45) are rotatably connected and arranged in a V shape, a second rotating rod (46) is rotatably connected to the inner wall of the discharge pipe (42) below the filter block (45), a cam (47) is fixedly connected to the outer wall of the second rotating rod (46), and the installation block (43) is arranged in an inclined position.

3. The device for utilizing heat-traced wastewater from epichlorohydrin production according to claim 1, characterized in that: The sedimentation tank (1) is fixedly connected to a first drive motor (10) on one side of its outer wall. The output end of the first drive motor (10) is fixedly connected to the first rotating rod (32) through a coupling.

4. The device for utilizing heat-traced wastewater from epichlorohydrin production according to claim 2, characterized in that: A second drive motor (11) is fixedly connected to one side of the outer wall of the feeding pipe (42). The output end of the second drive motor (11) is fixedly connected to the second rotating rod (46). A second spring (12) is fixedly connected to one side of the inner wall of the slide. The other end of the second spring (12) abuts against the slider (44).

5. The device for utilizing heat-traced wastewater from epichlorohydrin production according to claim 2, characterized in that: The outer wall of the discharge pipe (42) has an opening and a sealed box door (13) is hinged to it. Both outer walls of the filter block (45) are provided with sealing blocks. One end of the storage tank (41) is provided with a discharge pipe.

6. A device for utilizing heat-traced wastewater from epichlorohydrin production as described in any one of claims 1-5, characterized in that, Includes the following steps: The first step is to put the heat tracing wastewater into the sedimentation tank (1) through the feed pipe, add coagulant, and coagulate the suspended solids, colloidal substances and dissolved substances in the heat tracing wastewater in the sedimentation tank (1) into large particles to achieve the purpose of water purification. The second step is to put the purified water into the collection tank (2) through the inlet pipe (5), heat the purified water in the collection tank (2) through the heating plate (31), and discharge the heated purified water through the outlet pipe (6). In the third step, the flocculated wastewater enters the storage tank (41) through the feed pipe (42). The filter block (45) filters the wastewater and blocks large particles of impurities. The sealed box door (13) can be opened to clean the large particles of impurities.

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