A coking waste liquid recrystallization and salt extraction equipment

Abstract

This utility model discloses a coking waste liquid recrystallization and salt extraction device, belonging to the field of coking waste liquid treatment technology. It includes a mixing tank, with a filter assembly located below the mixing tank. The filter assembly is used to separate sulfate solution and solid precipitate. A drive mechanism is fixedly installed on the lower back of the mixing tank, and a transmission assembly is located on the back of the filter assembly. The drive mechanism drives the filter assembly to swing up and down via the transmission assembly. The drive mechanism can drive the filter assembly to rotate on a support shaft via the transmission assembly, realizing the up-and-down reciprocating oscillation of the filter screen. This facilitates the separation of solid precipitate and sulfate solution, avoids the need for manual cleaning of the solid precipitate above the filter screen, improves the separation effect of solid precipitate and sulfate solution, and further improves the efficiency of coking waste liquid recrystallization and salt extraction.

Description

Technical Field

[0001] This utility model belongs to the field of coking waste liquid treatment technology, specifically relating to a coking waste liquid recrystallization and salt extraction device. Background Technology

[0002] Coking wastewater is a highly toxic industrial wastewater generated during the coking, coal gas purification, and chemical product refining processes. It has a complex composition and is difficult to treat. This type of wastewater usually contains high concentrations of organic pollutants such as phenols, cyanides, ammonia nitrogen, thiocyanate, and polycyclic aromatic hydrocarbons, along with a large amount of inorganic salts (mainly sodium chloride and sodium sulfate).

[0003] According to the authorized announcement number CN216711685U, a salt extraction and purification device for coking desulfurization waste liquid is known prior art. Although the patent has the advantage of heating and stirring the added solution with the waste liquid, the technical solution of the patent still has the following defects in actual use: In this patent, the filter screen is set below the liquid outlet to separate the solid precipitate and the sulfate solution. However, the method of cleaning the solid precipitate is complicated and not conducive to the operator's cleaning of the solid precipitate, resulting in low working efficiency of the salt extraction equipment. Utility Model Content

[0004] The purpose of this invention is to provide a coking waste liquid recrystallization and salt extraction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coking waste liquid recrystallization and salt extraction device, including a mixing tank, a filter assembly is arranged below the mixing tank, the filter assembly is used to separate sulfate solution and solid precipitate, a drive mechanism is fixedly installed on the lower back of the mixing tank, a transmission assembly is arranged on the back of the filter assembly, and the drive mechanism drives the filter assembly to swing up and down through the transmission assembly.

[0006] In a preferred embodiment, a support frame is fixedly installed on the bottom outer wall of the mixing box, and an aisle is provided on one side of the support frame.

[0007] In a preferred embodiment, sliding grooves are provided on both inner walls of the mixing box.

[0008] In a preferred embodiment, a solid sedimentation container is provided below the front side of the mixing tank, and a sulfate solution container is provided below the mixing tank.

[0009] In a preferred embodiment, the filter assembly includes a frame, a filter screen is disposed inside the frame, a flow-blocking strip is disposed on the upper surface of the filter screen on the upper layer of the frame, a funnel is disposed at the bottom of the frame, a guide plate is fixedly installed on the front side of the frame, pins are disposed on both outer walls of the frame, and a return spring is disposed on the lower front side of the frame, with the bottom end of the return spring fixed to the inner wall of the mixing tank.

[0010] In a preferred embodiment, the drive mechanism includes a motor frame fixed to the back of the mixing box, a drive motor is provided at the bottom of the motor frame, and a drive shaft is provided at both ends of the drive motor, with a cam installed at the end of the drive shaft.

[0011] In a preferred embodiment, the transmission assembly includes a bushing fixedly connected to one side of the frame, a support shaft rotatably inserted inside the bushing, bearing seats provided on both outer walls of the mixing box, the support shaft passing through the bearing seats, and a transmission arm fixedly connected to one outer wall of the bushing.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The coking waste liquid recrystallization and salt extraction equipment uses a drive mechanism that can drive the filter assembly to rotate on the support shaft through the transmission component, realizing the up-and-down reciprocating turbulence of the filter screen, which helps to separate the solid precipitate from the sulfate solution, avoids the need for cleaning the solid precipitate on the filter screen, improves the separation effect of solid precipitate from sulfate solution, and thus further improves the efficiency of coking waste liquid recrystallization and salt extraction. This coking waste liquid recrystallization and salt extraction equipment, by setting up solid precipitation containers and sulfate solution containers, can collect solid precipitation and sulfate solution. At the same time, by using components such as guide hoods and funnels, it can prevent solid precipitation and sulfate solution from escaping, thereby improving the collection efficiency. Attached Figure Description

[0013] Figure 1 This is a frontal view of the structure of this utility model from one angle; Figure 2 This is another frontal view of the structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention. Figure 4 This is a front view of the filter assembly and drive mechanism of this utility model. Figure 5 This is a front view of the filter assembly and drive mechanism of this utility model.

[0014] In the diagram: 1. Mixing tank; 11. Sliding trough; 2. Support frame; 3. Solid sedimentation container; 4. Sulfate solution container; 5. Filter assembly; 51. Frame; 52. Filter screen; 53. Flow barrier; 54. Funnel; 55. Guide plate; 56. Pin; 57. Return spring; 6. Drive mechanism; 61. Motor frame; 62. Drive motor; 63. Drive shaft; 64. Cam; 7. Transmission assembly; 71. Bushing; 72. Bearing seat; 73. Support shaft; 74. Transmission arm. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figure 1 and Figure 2 This utility model provides a coking waste liquid recrystallization and salt extraction device, including a mixing tank 1. A support frame 2 is fixedly installed on the bottom outer wall of the mixing tank 1, and a passage is provided on one side of the support frame 2. A solid sedimentation container 3 is provided below the front side of the mixing tank 1, and a sulfate solution container 4 is provided below the mixing tank 1.

[0018] In this embodiment, the mixing tank 1 is mainly used for heating and mixing coking waste liquid to form solid precipitate and sulfate solution. The solid precipitate container 3 is used for collecting the solid precipitate, and the sulfate solution container 4 is used for collecting the sulfate solution.

[0019] In the above scheme, it should be noted that the mixing tank 1 is equipped with an existing electric stirrer (e.g., a motor-driven stirring rod) and a heater (e.g., an electric heating plate). The specific structure, electrical connection method and working principle of the electric stirrer and the heater are all existing publicly available technologies, and will not be described in detail here.

[0020] Please see Figure 3 , Figure 4 and Figure 5A filter assembly 5 is provided below the mixing tank 1. The filter assembly 5 is used to separate the sulfate solution and solid precipitate. The filter assembly 5 includes a frame 51. A filter screen 52 is provided inside the frame 51. A flow-blocking strip 53 is provided on the upper surface of the filter screen 52. A funnel 54 is provided at the bottom of the frame 51. A guide plate 55 is fixedly installed on the front side of the frame 51. A return spring 57 is provided below the front side of the frame 51. When the lower end of the frame 51 is tilted upward, the return spring 57 is stretched. After the external force of the transmission assembly 7 is eliminated, the lower end of the frame 51 can be reset under the action of the return spring 57. The bottom end of the return spring 57 is fixed on the inner wall of the mixing tank 1.

[0021] In this embodiment, the filter screen 52 is a replaceable structure inside the frame 51, which enables convenient replacement of the filter screen 52 after a period of use. The flow-blocking strip 53, which is a semi-cylindrical structure, can block the flow of sulfate solution. At the same time, as the filter screen 52 moves, solid precipitates can easily pass over it without affecting the transport of solid precipitates. It can also prevent the sulfate solution from flowing downwards from the upper surface of the filter screen 52 too quickly.

[0022] Please see Figure 3 and Figure 4 Sliding grooves 11 are provided on both inner walls of the mixing box 1, and pins 56 are provided on both outer walls of the frame 51.

[0023] In this embodiment, when the frame 51 bounces up and down at its far end, the pin 56 on the outside of the frame 51 slides inside the sliding groove 11. It should be noted that the sliding groove 11 is arc-shaped, which ensures the smoothness of the pin 56 sliding inside the sliding groove 11.

[0024] Please see Figure 3 , Figure 4 and Figure 5 A drive mechanism 6 is fixedly installed on the lower back of the mixing box 1. The drive mechanism 6 includes a motor frame 61 fixed on the back of the mixing box 1. A drive motor 62 is provided at the bottom of the motor frame 61. Both ends of the drive motor 62 are provided with transmission shafts 63, and cams 64 are installed at the ends of the transmission shafts 63.

[0025] In this embodiment, starting the drive mechanism 6 enables the drive motor 62 to drive the transmission shafts 63 at both ends to rotate synchronously, thereby driving the two cams 64 to rotate synchronously. The cams 64 drive the transmission arm 74 to move, and the efficient and continuous motion drives the transmission component 7 to move. This also enables the filter component 5 to continuously transport solid sediments.

[0026] Please see Figure 3 , Figure 4 and Figure 5A transmission component 7 is provided on the back of the filter component 5. The drive mechanism 6 drives the filter component 5 to swing up and down through the transmission component 7. The transmission component 7 includes a bushing 71 fixedly connected to one side of the frame 51. A support shaft 73 is rotatably inserted into the bushing 71. Bearing seats 72 are provided on both outer walls of the mixing box 1, and the support shaft 73 is inserted into the inside of the bearing seats 72. A transmission arm 74 is fixedly connected to one outer wall of the bushing 71.

[0027] In this embodiment, the transmission arm 74 and the bushing 71 are fixedly connected and can rotate on the support shaft 73 at the same time. When the cam 64 contacts the transmission arm 74, it can drive the transmission arm 74 to rotate downward. The transmission arm 74 can drive the far end of the frame 51 to tilt upward. With the continuous movement of the transmission component 7, the frame 51 and the filter screen 52 can be used to automatically clean the solid sediment on it.

[0028] The working principle and usage process of this utility model are as follows: When the coking waste liquid mixture falls down onto the filter assembly 5, the solid precipitate and sulfate solution are separated by the filter screen 52. The solid precipitate is trapped above the filter screen 52, while the sulfate solution passes through the filter screen 52 to the bottom. At the same time, the solid precipitate flows along the filter screen 52 into the interior of the solid precipitate container 3, while the sulfate solution flows into the interior of the sulfate solution container 4 for separate collection. When the filter screen 52 filters the mixture, the drive mechanism 6 is activated to drive the transmission component 7 to move. The transmission component 7 then drives the filter component 5 to swing up and down repeatedly, thereby achieving efficient separation of solid precipitate and sulfate solution. The drive motor 62 rotates, driving the transmission shaft 63 to rotate. The transmission shaft 63 rotates synchronously with the cam 64. The cam 64 presses down on the transmission arm 74, causing the bushing 71 to rotate outside the support shaft 73. This causes the frame 51 and the filter screen 52 to tilt upwards. At this time, the return spring 57 is stretched. After the cam 64 rotates to its original position, the return spring 57 pulls the frame 51 and the filter screen 52 back to their original positions. This reciprocating motion achieves the up and down swinging action of the filter screen 52, which allows the solid precipitate above the filter screen 52 to flow from the top to the bottom and be successfully collected inside the solid precipitate container 3, avoiding manual collection of the solid precipitate.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A salt extraction plant for recrystallization of coking waste liquors, comprising a mixing tank (1), characterized in that: A filter assembly (5) is provided below the mixing tank (1). The filter assembly (5) is used to separate the sulfate solution and the solid precipitate. A drive mechanism (6) is fixedly installed on the back of the mixing tank (1). A transmission assembly (7) is provided on the back of the filter assembly (5). The drive mechanism (6) drives the filter assembly (5) to swing up and down through the transmission assembly (7).

2. A coking waste liquor recrystallization salt extraction apparatus according to claim 1, characterized by: A support frame (2) is fixedly installed on the bottom outer wall of the mixing box (1), and a passage is provided on one side of the support frame (2).

3. A coking waste liquor recrystallization salt extraction apparatus according to claim 1, characterized by: The mixing box (1) has sliding grooves (11) on both inner walls.

4. The apparatus for recovering salt from coking waste liquor by recrystallization according to claim 1, characterized in that: A solid sedimentation container (3) is provided on the lower front side of the mixing tank (1), and a sulfate solution container (4) is provided below the mixing tank (1).

5. A salt extraction apparatus for recrystallization of coking waste liquid according to claim 1, characterized in that: The filter assembly (5) includes a frame (51), a filter screen (52) is provided inside the frame (51), a flow-blocking strip (53) is provided on the upper layer of the frame (51) on the upper surface of the filter screen (52), a funnel (54) is provided at the bottom of the frame (51), a guide plate (55) is fixedly installed on the front side of the frame (51), pins (56) are provided on both outer walls of the frame (51), and a reset spring (57) is provided at the lower front side of the frame (51). The bottom end of the reset spring (57) is fixed on the inner wall of the mixing box (1).

6. A salt extraction apparatus for recrystallization of coking waste liquid according to claim 1, characterized in that: The drive mechanism (6) includes a motor frame (61) fixed on the back of the mixing box (1). A drive motor (62) is provided at the bottom of the motor frame (61). Both ends of the drive motor (62) are provided with transmission shafts (63), and cams (64) are installed at the ends of the transmission shafts (63).

7. A salt extraction apparatus for recrystallization of coking waste liquid according to claim 5, characterized in that: The transmission assembly (7) includes a bushing (71) fixedly connected to one side of the frame (51), a support shaft (73) is rotatably inserted inside the bushing (71), bearing seats (72) are provided on both outer walls of the mixing box (1), the support shaft (73) is inserted inside the bearing seat (72), and a transmission arm (74) is fixedly connected to one outer wall of the bushing (71).

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