Purification device for waste tar in thiophene production

Abstract

The utility model discloses a purification device for waste tar in thiophene production, which belongs to the technical field of tar waste gas purification and comprises a purification tank, a top cover is arranged at the top of the purification tank, the top of the top cover is communicated with an exhaust port, and a filter screen is arranged at the lower half part of the inner circumference of the purification tank. An impurity filtering disc, an acid liquor disc and an alkali liquor disc are sequentially fixed to the upper portion of the filter screen from bottom to top, a plurality of one-way valve ports are formed in the bottoms of the impurity filtering disc, the acid liquor disc and the alkali liquor disc, and a rotating rod is rotationally connected to the center of the inner bottom of the purification tank through a bearing; a plurality of cleaning brush plates making contact with the filter screen are connected to the periphery of the top end of the rotating rod, an air pushing plug plate is arranged below the filter screen, and at least one lifting structure for driving the air pushing plug plate to ascend and descend is arranged at the bottom of the air pushing plug plate. The purification device for waste tar in thiophene production is suitable for extracting thiophene from waste tar, has the anti-blocking function and the multi-layer filtering function, and is good in purification effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of tar waste gas purification, in particular to a purification device for waste tar in thiophene production. Background Art

[0002] Thiophene is a five-membered heterocyclic compound containing a sulfur atom, and its chemical name is 1-thia-2,4-cyclopentadiene. It is an aromatic compound, and its aromaticity is only slightly weaker than that of benzene. As part of the aromatic system, a pair of unshared electron pairs of the sulfur atom on the thiophene ring conjugates with two double bonds to form a delocalized π bond. The chemical properties of thiophene are more active than benzene, and it is easy to undergo electrophilic substitution reactions, among which the α-position is more likely to react than the β-position. Waste tar is produced in industrial production. Thiophene can be extracted from waste tar in a certain way. When thiophene is extracted from waste tar, waste gas will be generated. If the waste gas is directly discharged, it will pollute the environment and cause harm to the human body. Therefore, a purification device is needed. Most of the existing purification devices use purification towers, etc., which have a relatively complex structure and a large body. The amount of waste gas generated by waste tar is small. The use of purification towers puts too much economic pressure on enterprises and is too wasteful. Therefore, a small purification device with a simple structure is needed.

[0003] The publication number is CN217568115U, which is a tail gas purification tower for dimethyl disulfide production that is easy to clean. The tail gas of dimethyl disulfide is sprayed with purification liquid for purification by an annular purification box, cleaning cotton, water tank, No. 1 water pipe, No. 1 water pump, No. 2 water pipe, telescopic pipe, water outlet pipe and atomizing nozzle. At the same time, the annular purification box and the cleaning cotton are driven to move back and forth in the inner cavity of the purification tower by the cooperation of the support rod, the fixed plate, the multi-section electric telescopic rod and the push rod. It is beneficial to purify the tail gas of dimethyl disulfide and quickly clean the impurity particles attached to the inner wall of the purification tower to prevent the harmful substances in the impurity particles from easily corroding the inner wall of the purification tower, so as to improve the service life of the purification tower. However, its structure and volume are large, and it is not suitable for the extraction of thiophene from waste tar. Utility Model Content

[0004] The utility model aims to provide a purification device for waste tar in thiophene production to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a purification device for waste tar in thiophene production, comprising a purification tank, a top cover is arranged on the top of the purification tank, and the top of the top cover is an arc surface and is connected to an exhaust port for exhaust, an air inlet pipe is connected to the lower half of one side of the purification tank, and a filter screen is arranged on the lower half of the inner circumference of the purification tank, a debris filter disc, an acid liquid disc, and an alkali liquid disc are fixed above the filter screen in sequence from bottom to top, and a plurality of one-way valve ports are arranged at the bottom of the debris filter disc, the acid liquid disc, and the alkali liquid disc, a rotating rod is rotatably connected to the center of the inner bottom of the purification tank through a bearing, and a plurality of cleaning brush plates in contact with the filter screen are connected to the outer periphery of the top end of the rotating rod, an air push plug plate is arranged below the filter screen, and at least one group of lifting structures for driving the air push plug plate to rise and fall is arranged at the bottom of the air push plug plate.

[0006] In a further embodiment, the interiors of the filter disc, the acid disc and the alkali disc contain water, acid solution and alkaline solution respectively, and the one-way restriction of the one-way valve port allows substances to enter only from the bottom.

[0007] In a further embodiment, the air push plug plate is adapted to the inner circumference of the purification tank and is bonded with a rubber layer, and a circular sleeve is connected to the center of the air push plug plate.

[0008] In a further embodiment, the circular sleeve is matched with the outer circumference of the rotating rod, and the inner wall of the circular sleeve and the outer circumference of the rotating rod are respectively provided with a spiral cavity and a spiral block.

[0009] In a further embodiment, the spiral cavity is designed with a spiral trajectory, and when the spiral cavity rises or falls, the spiral block is driven to rotate along the spiral cavity trajectory.

[0010] In a further embodiment, the lifting structure is a hydraulic rod or a telescopic rod.

[0011] In a further embodiment, the lifting structure is a bidirectional screw, two threaded seats and a traction support rod.

[0012] In a further embodiment, both ends of the outer circumference of the bidirectional screw are provided with thread designs with opposite spiral directions, and one end of the bidirectional screw is connected to a driving motor via a coupling.

[0013] In a further embodiment, symmetrical threaded sleeves are provided with threaded seats at both ends of the outer circumference of the bidirectional screw, and the bottom of the threaded seat is fitted with the inner bottom wall of the purification tank to achieve positioning.

[0014] In a further embodiment, a traction support rod is symmetrically hinged between the top of the two threaded seats and the bottom of the air push plug plate.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] The layered design of the filter disc, acid disc, and alkali disc, as well as the design of holding water, acid, and alkali inside the filter disc, acid disc, and alkali disc, can push the gas when the air push plug plate rises through the one-way restriction of the one-way valve port. Through the air pressure between each layer, the waste gas can be gradually transported from the lowest layer to the uppermost layer for discharge. In the process, the water will process the fine particles of solid impurities and water-liquid mixture therein. After the acidic and alkaline solutions, the acidic and alkaline substances in the gas can be neutralized. The purification of the activated carbon layer can play a role in deodorization and further absorption, thus realizing the purification process.

[0017] The design of the two ends of the bidirectional screw with opposite thread directions and the two ends of the thread seat are symmetrically sleeved. Through the symmetrical hinge of the traction support rod and the connection design of one end of the bidirectional screw with the drive motor, when the drive motor is running, it can drive the bidirectional screw to rotate, so that the traction support rod moves synchronously, and drive the push air plug plate to move up and down to push the exhaust gas.

[0018] The circular sleeve at the center of the air push plug plate is fixedly connected and adapted to the rotating rod. Through the rotation connection of the rotating rod and the action of multiple cleaning brush plates on the outer periphery of the top of the rotating rod, and through the cooperation of the spiral cavity and the spiral block, when the air push plug plate moves up and down, the cleaning brush plate on the top of the rotating rod can be driven to rotate back and forth, further brushing the filter screen to avoid clogging of the filter screen.

[0019] The device for purifying waste tar in thiophene production has a relatively simple structure and a small volume, is suitable for extracting thiophene from waste tar, and has anti-clogging and multi-layer filtration functions, and has a good purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a central sectional view of the utility model;

[0023] Figure 3 It is an exploded schematic diagram of the connection structure between the air push plug plate and the rotating rod of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection structure of the bidirectional screw of the utility model.

[0025] Description of reference numerals:

[0026] 1. Purification tank; 2. Top cover; 3. Exhaust port; 4. Inlet pipe; 5. Filter screen; 6. Filter disc; 7. Acid disc; 8. Alkali disc; 9. One-way valve port; 10. Activated carbon layer; 11. Air push plug plate; 12. Round sleeve; 13. Rotating rod; 14. Cleaning brush plate;

[0027] 21. spiral cavity; 22. spiral block;

[0028] 31. Driving motor; 32. Bidirectional screw; 33. Threaded seat; 34. Traction support rod. DETAILED DESCRIPTION

[0029] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0030] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0031] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0032] Most of the existing purification devices use purification towers, which have complex structures and large bodies. However, the amount of waste gas generated by waste tar is small, and the use of purification towers puts too much economic pressure on enterprises and is too wasteful. For economic considerations, a purification device with better economic effects is needed to be suitable for extracting thiophene from waste tar. In view of this point, a purification device with small size, simple structure and low cost is designed. The specific structure is as follows.

[0033] See also Figures 1 to 4 The purification device for waste tar in thiophene production includes a purification tank 1. The lower half of one side of the purification tank 1 is connected with an air inlet pipe 4. The air inlet pipe 4 is designed as a one-way restriction and can only input waste gas into the interior of the purification tank 1. The top of the purification tank 1 is an opening. A top cover 2 is bolted to the opening of the purification tank 1. The top of the top cover 2 is an arc surface and is provided with an exhaust port 3. The exhaust port 3 is used to discharge the purified waste gas.

[0034] See also Figure 1 and Figure 2In order to achieve purification, a filter screen 5 is provided at the lower half of the inner circumference of the purification tank 1, and a filter disc 6, an acid disc 7, and an alkali disc 8 are fixed on the top of the filter screen 5 from bottom to top. The filter disc 6, the acid disc 7, and the alkali disc 8 are designed to match the inner circumference of the purification tank 1, thereby achieving multiple layers. The sides of the filter disc 6, the acid disc 7, and the alkali disc 8 are all provided with an infusion port and a discharge port that penetrate the purification tank 1, and an activated carbon layer 10 is fixed on the top of the alkali disc 8;

[0035] The filter disc 6, the acid disc 7, and the alkali disc 8 contain water, acid solution, and alkaline solution respectively. The bottom of the filter disc 6, the acid disc 7, and the alkali disc 8 is provided with a plurality of one-way valve ports 9. The one-way restriction of the one-way valve ports 9 allows substances to enter only from the bottom. An air push plate 11 is provided below the filter screen 5. The air push plate 11 is adapted to the inner periphery of the purification tank 1 and is bonded with a rubber layer, and the rubber layer is used to strengthen the seal.

[0036] The one-way restriction of the one-way valve port 9 allows the gas to be pushed when the air push plug plate 11 rises. Through the air pressure between each layer, the exhaust gas can be gradually transported between multiple layers. When passing through the process filter 5, larger particles of impurities will be blocked and filtered out. In the process of filtering the impurity disc 6, the water will process the fine particles of solid impurities and water-liquid mixture therein to remove the fine particles of fixed impurities. In the process of acidic and alkaline solutions, the acidic and alkaline substances in the gas can be neutralized in turn. Finally, the purification through the activated carbon layer 10 can play a role in deodorization and further absorption. After purification, it can be released from the exhaust port 3;

[0037] In order to facilitate maintenance, a detachable arc cover can be installed on the outer periphery of the purification tank 1 to facilitate maintenance inside. The arc cover and the purification tank 1 need to be sealed.

[0038] See also Figures 2 to 4 In order to achieve lifting, at least one lifting structure for driving the air push plate 11 to lift is provided at the bottom thereof;

[0039] The lifting structure can be an electric device such as a hydraulic rod or a telescopic rod. Although the use of electric devices can achieve the lifting effect, the extension and retraction of electric devices such as hydraulic rods or telescopic rods requires a certain amount of extension space margin. For example, if it is a hydraulic rod, sufficient space must be left at the bottom to store the length of the fixed part of the hydraulic rod, which leads to a waste of space and easily increases the volume of the device. In view of this, another lifting structure is designed.

[0040] The lifting structure consists of a bidirectional screw 32, two threaded seats 33 and a traction support rod 34. The two ends of the outer periphery of the bidirectional screw 32 are provided with thread designs with opposite spiral directions. One end of the bidirectional screw 32 is connected to a drive motor 31 through a coupling. The outer periphery of the drive motor 31 is fixed to the inner bottom of the purification tank 1. The two ends of the outer periphery of the bidirectional screw 32 are symmetrically threaded with threaded seats 33. The bottom of the threaded seat 33 is fitted with the inner bottom wall of the purification tank 1 to achieve positioning. The traction support rod 34 is symmetrically hinged between the top of the two threaded seats 33 and the bottom of the air push plug plate 11. The hinge is achieved through the arc surface at the end and the penetrating pin.

[0041] See also Figures 2 to 4 In order to realize automatic cleaning of the filter screen 5, a circular sleeve 12 is connected to the center of the air push plug plate 11, and a rotating rod 13 is adapted to be provided at the center of the circular sleeve 12. The bottom end of the rotating rod 13 is rotatably connected to the inner bottom of the purification tank 1 through a coupling, and a plurality of cleaning brush plates 14 in contact with the filter screen 5 are connected to the outer periphery of the top end of the rotating rod 13. The filter screen 5 can be cleaned by rotating the cleaning brush plates 14;

[0042] The inner wall of the circular sleeve 12 and the outer periphery of the rotating rod 13 are respectively provided with a spiral cavity 21 and a spiral block 22. The spiral cavity 21 is designed with a spiral track. When the spiral cavity 21 rises and falls, the spiral block 22 is driven to rotate along the track of the spiral cavity 21 (similar to the existing automatic dehydrating mop structure).

[0043] The above-mentioned components and electrical equipment are all existing technologies or existing feasible technologies. The working principles, sizes and models are irrelevant to the functions of this application, so they are not described in detail, and they are all controlled by remote control switches.

[0044] How it works

[0045] When the purifying device for waste tar in thiophene production is used, waste gas is input through the air inlet pipe 4, the driving motor 31 is started, and the bidirectional screw 32 is driven to rotate, so that the threaded seat 33 moves toward each other, and further the traction support rod 34 is synchronously displaced, so that the air push plug plate 11 can be reciprocated and lifted;

[0046] When the push plate 11 rises, the gas can be pushed. The gas passes through the one-way restriction of the one-way valve port 9, first passes through the filter screen 5, and the larger particles of impurities will be blocked and filtered out. Then, in the process of filtering the impurities disc 6, the water will process the fine particles of solid impurities and water in the gas to remove the fine particles of fixed impurities. Finally, in the process of acidic and alkaline solutions, the acidic and alkaline substances in the gas can be neutralized in turn. In the process of discharge, the gas can be purified by the activated carbon layer 10 to remove odor and further absorb.

[0047] At the same time, during the lifting and lowering of the air plug plate 11, the spiral chamber 21 inside the circular sleeve 12 is adapted to the spiral block 22. When the spiral chamber 21 is lifted or lowered, the spiral block 22 is driven to rotate along the trajectory of the spiral chamber 21, so that the rotating rod 13 rotates, and the cleaning brush plate 14 can brush the bottom of the filter screen 5 again.

[0048] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A purification device for waste tar in thiophene production, comprising a purification tank (1), wherein a top cover (2) is arranged on the top of the purification tank (1), and the top of the top cover (2) is a curved surface and is connected to an exhaust port (3) for exhausting gas; Features: The lower half of one side of the purification tank (1) is connected to an air inlet pipe (4), and the lower half of the inner periphery of the purification tank (1) is provided with a filter screen (5), and a filter disc (6), an acid liquid disc (7), and an alkali liquid disc (8) are fixed in sequence above the filter screen (5) from bottom to top, and a plurality of one-way valve ports (9) are provided at the bottom of the filter disc (6), the acid liquid disc (7), and the alkali liquid disc (8). The center of the inner bottom of the purification tank (1) is rotatably connected to a rotating rod (13) through a bearing, and the outer periphery of the top end of the rotating rod (13) is connected to a plurality of cleaning brush plates (14) in contact with the filter screen (5), and an air push plug plate (11) is provided below the filter screen (5), and at least one group of lifting structures for driving the air push plug plate (11) to rise and fall is provided at the bottom of the air push plug plate (11).

2. The purification device for waste tar in thiophene production according to claim 1, characterized in that: The impurity filter disc (6), the acid solution disc (7), and the alkali solution disc (8) contain water, acid solution, and alkali solution respectively, and the one-way restriction of the one-way valve port (9) allows substances to enter only from the bottom.

3. The purification device for waste tar in thiophene production according to claim 1, characterized in that: The air push plug plate (11) is adapted to the inner circumference of the purification tank (1) and is bonded with a rubber layer, and a circular sleeve (12) is connected to the center of the air push plug plate (11).

4. The purification device for waste tar in thiophene production according to claim 3, characterized in that: The circular sleeve (12) is matched with the outer circumference of the rotating rod (13), and the inner wall of the circular sleeve (12) and the outer circumference of the rotating rod (13) are respectively provided with a spiral cavity (21) and a spiral block (22).

5. The purification device for waste tar in thiophene production according to claim 4, characterized in that: The spiral cavity (21) is designed with a spiral trajectory, and when the spiral cavity (21) is lifted or lowered, the spiral block (22) is driven to rotate along the trajectory of the spiral cavity (21).

6. The device for purifying waste tar in thiophene production according to claim 1, characterized in that: The lifting structure is a hydraulic rod or a telescopic rod.

7. The purification device for waste tar in thiophene production according to claim 1, characterized in that: The lifting structure comprises a bidirectional screw rod (32), two threaded seats (33) and a traction support rod (34).

8. The purification device for waste tar in thiophene production according to claim 7, characterized in that: Both ends of the outer circumference of the bidirectional screw (32) are provided with screw threads with opposite spiral directions, and one end of the bidirectional screw (32) is connected to a drive motor (31) via a coupling.

9. The purification device for waste tar in thiophene production according to claim 8, characterized in that: The two ends of the outer circumference of the bidirectional screw (32) are symmetrically threaded with threaded seats (33), and the bottom of the threaded seat (33) is fitted with the inner bottom wall of the purification tank (1) to achieve position limiting.

10. The purification device for waste tar in thiophene production according to claim 9, characterized in that: A traction support rod (34) is symmetrically hinged between the tops of the two threaded seats (33) and the bottom of the air push plug plate (11).

Images