Tar residue collecting and drying device

Abstract

The invention relates to the technical field of tar residue treatment, and provides a tar residue collecting and drying device which is used for collecting and drying tar residues in an ammonia water clarifying tank and comprises a scraper conveyor, a homogenizer, a centrifugal machine, a dry residue collecting box, a liquid collecting box and a liquid return pump. An outlet of the scraper conveyor is connected with an inlet of the homogenizer, an outlet of the homogenizer is connected with an inlet of the centrifugal machine, the centrifugal machine is provided with a slag outlet and a liquid outlet, the slag outlet is connected with the dry slag collecting box, the liquid outlet is connected with the liquid collecting box, the liquid return pump is arranged in the liquid collecting box, and an outlet of the liquid return pump is connected with the ammonia water clarifying tank. The homogenizer and the centrifugal machine are arranged, the homogenizer pretreats the tar residues, and due to the fact that the viscosity of the tar residues is large, the centrifugal separation effect of the centrifugal machine can be improved after the tar residues are pretreated through the homogenizer, tar contained in the separated tar residues is reduced, peculiar smells in the dry residue collecting box are reduced, and follow-up treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of tar residue processing, and in particular to a tar residue collecting and drying device. Background Art

[0002] Tar residue is a hazardous waste generated in the production of coking enterprises. Its main components are coke powder, coal powder, coal tar, ammonia water, etc.

[0003] At present, the treatment of tar residue is usually carried out by static separation in an ammonia clarification tank. The tar residue deposited at the bottom of the tank is sent to a transfer box by a scraper conveyor for collection. When a certain amount of tar residue is collected, it needs to be cleaned manually or mechanically.

[0004] However, tar residue has high viscosity and a long discharge time. A large amount of toxic and harmful gases such as ammonia and naphthalene are discharged along with the tar residue. The gas is discharged directly between the slag outlet of the ammonia clarification tank and the transfer box, which has a strong odor and causes great pollution to the environment and poses a threat to the health of workers. Summary of the invention

[0005] The invention provides a tar residue collecting and drying device.

[0006] The present invention provides a tar residue collection and drying device, which is used for collecting and drying tar residue in an ammonia water clarification tank, and comprises a scraper conveyor, a homogenizer, a centrifuge, a dry residue collection box, a liquid collection box, and a liquid return pump;

[0007] The inlet of the scraper conveyor is connected to the outlet of the ammonia water clarification tank, the outlet of the scraper conveyor is connected to the inlet of the homogenizer, the outlet of the homogenizer is connected to the inlet of the centrifuge, the centrifuge is provided with a slag outlet and a liquid outlet, the slag outlet is connected to the dry slag collection box, the liquid outlet is connected to the liquid collection box, the liquid return pump is arranged in the liquid collection box, and the outlet of the liquid return pump is connected to the ammonia water clarification tank.

[0008] According to the tar residue collecting and drying device provided by the present invention, an automatically regulating discharge valve is provided between the outlet of the homogenizer and the inlet of the centrifuge.

[0009] According to the tar residue collecting and drying device provided by the present invention, the residue outlet of the centrifuge is sealed and connected to the dry residue collecting box via a pneumatic sealing cover.

[0010] The tar residue collecting and drying device provided by the present invention comprises a heat preservation room, wherein the homogenizer, the automatic regulating discharge valve, the centrifuge and the dry residue collecting box are arranged in the heat preservation room, and a Voc pipe is also connected to the side wall of the heat preservation room.

[0011] According to the tar residue collecting and drying device provided by the present invention, the centrifuge is a conical basket centrifuge, and a self-unloading drum is provided in the centrifuge for separating the tar residue entering the centrifuge.

[0012] According to the tar residue collecting and drying device provided by the present invention, a distributor is provided in the centrifuge.

[0013] According to the tar residue collecting and drying device provided by the present invention, the height of the liquid outlet of the centrifuge is greater than the height of the inlet of the liquid collection box.

[0014] According to the tar residue collecting and drying device provided by the present invention, a heater is provided inside the liquid collection box to heat the tar in the liquid collection box so as to increase the temperature of the tar in the liquid collection box.

[0015] Beneficial effects: The tar residue collecting and drying device provided by the present invention is used for collecting and drying the tar residue in the ammonia water clarification tank, and comprises a scraper conveyor, a homogenizer, a centrifuge, a dry residue collection box, a liquid collection box, and a liquid return pump. The scraper conveyor is arranged in the ammonia water clarification tank, the outlet of the scraper conveyor is connected to the inlet of the homogenizer, the outlet of the homogenizer is connected to the inlet of the centrifuge, the centrifuge is provided with a residue outlet and a liquid outlet, the residue outlet is connected to the dry residue collection box, the liquid outlet is connected to the liquid collection box, the liquid return pump is arranged in the liquid collection box, and the outlet of the liquid return pump is connected to the ammonia water clarification tank. By setting up a homogenizer and a centrifuge, the homogenizer pre-treats the tar residue to make the tar residue uniform, preparing for the subsequent centrifugal separation. Since the viscosity of the tar residue is large, the homogenizer pre-treatment can improve the centrifugal separation effect of the centrifuge, reduce the tar contained in the oil residue after separation, reduce the odor in the dry residue collection box, and facilitate subsequent processing. The tar in the liquid collection box continues to return to the ammonia clarification tank for cyclic treatment. The homogenization, centrifugal separation and dry residue collection processes in the drying device processing process in this embodiment are in a closed state, which reduces environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is an overall structural diagram of a tar residue collection and drying device according to an embodiment of the present invention;

[0018] Figure 2 It is a process diagram for collecting tar residue in an embodiment of the present invention.

[0019] Reference numerals:

[0020] 1. Ammonia clarification tank; 2. Scraper conveyor; 3. Homogenizer; 4. Centrifuge; 41. Slag outlet; 42. Liquid outlet; 5. Dry slag collection box; 6. Liquid collection box; 7. Liquid return pump; 8. Automatic regulating discharge valve; 9. Pneumatic sealing cover; 10. Insulation room; 11. Voc pipeline. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Tar residue is a hazardous waste generated in the production of coking enterprises. Its main components are coke powder, coal powder, coal tar, ammonia water, etc.

[0026] At present, the treatment of tar residue is usually carried out by static separation in an ammonia clarification tank. The tar residue deposited at the bottom of the tank is sent to a transfer box by a scraper conveyor for collection. When a certain amount of tar residue is collected, it needs to be cleaned manually or mechanically.

[0027] However, tar residue has high viscosity and a long discharge time. A large amount of toxic and harmful gases such as ammonia and naphthalene are discharged along with the tar residue. The gas is discharged directly between the slag outlet of the ammonia clarification tank and the transfer box, which has a strong odor and causes great pollution to the environment and poses a threat to the health of workers.

[0028] In the embodiment of the present invention, a homogenizer and a centrifuge are provided, and the homogenizer pre-treats the tar residue to make the tar residue uniform, in preparation for subsequent centrifugal separation by a centrifuge. Since the viscosity of the tar residue is high, the homogenizer pre-treats the tar residue and can improve the centrifugal separation effect of the centrifuge, reduce the tar contained in the oil residue after separation, reduce the odor in the dry residue collection box, and facilitate subsequent processing. The tar in the liquid collection box continues to return to the ammonia clarification tank for cyclic processing. In the drying device processing process in this embodiment, the homogenization, centrifugal separation and dry residue collection processes are in a closed state, which reduces environmental pollution.

[0029] Combine the following Figure 1 The tar residue collecting and drying device of the present invention is described.

[0030] like Figure 1 As shown, a tar residue collecting and drying device is provided in an embodiment of the present invention, which is used to collect and dry the tar residue in an ammonia water clarification tank 1, and includes a scraper conveyor 2, a homogenizer 3, a centrifuge 4, a dry residue collecting box 5, a liquid collecting box 6, and a liquid return pump 7.

[0031] Among them, the inlet of the scraper conveyor 2 is connected to the outlet of the ammonia water clarification tank 1, the outlet of the scraper conveyor 2 is connected to the inlet of the homogenizer 3, the outlet of the homogenizer 3 is connected to the inlet of the centrifuge 4, the centrifuge 4 is provided with a slag outlet 41 and a liquid outlet 42, the slag outlet 41 is connected to the dry slag collection box 5, the liquid outlet 42 is connected to the liquid collection box 6, the liquid return pump 7 is arranged in the liquid collection box 6, and the outlet of the liquid return pump 7 is connected to the ammonia water clarification tank 1.

[0032] In this embodiment, multiple ammonia clarification tanks 1 can be set up, and the homogenizer 3 is used to crush, disperse, and mix the tar residue scraped by the scraper conveyor 2 to make the tar residue homogenous. The homogenizer 3 is a precise match of the rotor and the stator, a working head claw structure, two-way material suction, and high shearing efficiency. The specific structure of the homogenizer 3 can refer to the existing technology and will not be repeated here.

[0033] In this embodiment, the centrifuge 4 can be configured as a filtering centrifuge, and the centrifuge 4 centrifuges the homogenized tar residue. The separated solid oil residue enters the dry residue collection box 5, and the separated liquid tar is discharged into the liquid collection box 6 for collection.

[0034] During operation, the scraper conveyor 2 collects the tar residue in the ammonia clarification tank 1 in a closed manner and puts it into the homogenizer 3 for crushing, dispersion and mixing. The homogenized tar residue enters the centrifuge 4 for centrifugal separation. The separated solid oil residue enters the dry residue collection box 5. The separated liquid tar is discharged into the liquid collection box 6 for collection. After a certain amount of tar is collected in the liquid collection box 6, it is pumped to the ammonia clarification tank 1 by the return liquid pump 7 for further sedimentation and separation, and then the next cycle treatment is carried out.

[0035] In this example, a homogenizer 3 and a centrifuge 4 are provided in the tar residue collection and drying device. The homogenizer 3 pre-treats the tar residue to make the tar residue uniform in preparation for the subsequent centrifugal separation by the centrifuge 4. Since the viscosity of the tar residue is large, the pre-treatment by the homogenizer 3 can improve the centrifugal separation effect of the centrifuge 4, reduce the tar contained in the oil residue after separation, reduce the odor in the dry residue collection box 5, and facilitate subsequent processing. The tar in the liquid collection box 6 continues to return to the ammonia clarification tank 1 for cyclic treatment. The homogenization, centrifugal separation and dry residue collection processes in the drying device processing process in this embodiment are in a closed state, which reduces environmental pollution.

[0036] Continue as Figure 1 As shown, in some embodiments of the present invention, the outlet of the homogenizer 3 is connected to the inlet of the centrifuge 4 by a pipeline, and an automatic regulating discharge valve 8 is provided on the pipeline. The automatic regulating discharge valve 8 is set to a quantitative discharge mode, and the tar residue homogenized in the homogenizer 3 is quantitatively discharged into the centrifuge 4 through the automatic regulating discharge valve 8.

[0037] In order to ensure the sealing of the connection between the centrifuge 4 and the dry residue collection box 5, reduce the diffusion of oil residue odor, and reduce environmental pollution, in some embodiments of the present invention, the slag outlet 41 of the centrifuge 4 and the dry residue collection box 5 are sealed by a pneumatic sealing cover 9, thereby ensuring the sealing of the connection between the centrifuge 4 and the dry residue collection box 5.

[0038] In some other embodiments of the present invention, the tar residue collection and drying device also includes an insulation room 10, a homogenizer 3, an automatic regulating discharge valve 8, a centrifuge 4 and a dry residue collection box 5 are arranged in the insulation room 10, and a Voc pipe 11 is also connected to the side wall of the insulation room 10.

[0039] The heat preservation room 10 adopts a closed design to ensure that the processing process between the homogenizer 3, the automatic regulating discharge valve 8, the centrifuge 4 and the dry residue collection box 5 is carried out in a closed space, which reduces the spread of odor during the processing and avoids environmental pollution. The side wall of the heat preservation room 10 is also connected to a Voc pipe 11, and the gas in the heat preservation room 10 is uniformly and safely discharged through the Voc pipe 11.

[0040] Optionally, a heating device may be provided inside the insulation room 10 to heat the insulation room 10, and an insulation layer may be provided outside the insulation room 10 to insulate the insulation room 10. Due to the high viscosity of the tar residue, a high temperature environment can improve the fluidity of the tar residue and improve the processing efficiency.

[0041] In some embodiments of the present invention, the centrifuge 4 can also be configured as a conical basket centrifuge. Specifically, a self-unloading drum is provided in the centrifuge 4, and the drum is conical and is used to separate and discharge the tar residue entering the centrifuge 4, thereby achieving the effect of separating solids and liquids. The centrifuge 4 has a strong solid-liquid separation ability and improves the separation effect of the tar residue.

[0042] Furthermore, a distributor is provided in the centrifuge 4, which can evenly distribute the tar residue in the centrifuge 4, so that the tar residue in each place can be evenly stressed, and the degree of separation between the tar residues in each place is similar, avoiding the problem that some tar residues after separation have high tar content and some have low tar content.

[0043] In some other embodiments, the height of the liquid outlet 42 of the centrifuge 4 is greater than the height of the inlet of the liquid collecting box 6, so that the liquid tar obtained after separation can automatically flow into the liquid collecting box 6 without the need for power equipment such as pumps, thereby saving energy.

[0044] In some other embodiments, a heater is provided in the liquid collection box 6 to heat the tar in the liquid collection box 6 so as to increase the temperature of the tar in the liquid collection box 6 and improve the fluidity of the tar.

[0045] In some embodiments of the present invention, the homogenizer 3 is also connected to the tar pipeline through a pipeline. An automatic feeding valve is provided on the pipeline between the homogenizer 3 and the tar pipeline. The discharged tar in the tar pipeline can also enter the homogenizer 3 for processing to continue subsequent processes such as centrifugal separation.

[0046] The treatment process of the tar residue collection and drying device mainly includes the following process steps:

[0047] The first step is to pre-treat the tar residue in the ammonia clarification tank 1, specifically including scraping the tar residue in the ammonia clarification tank 1 by the scraper conveyor 2 and sending it to the homogenizer 3 for crushing, dispersing and mixing;

[0048] In the second step, the tar residue homogenized in the homogenizer 3 is discharged into the centrifuge 4 for centrifugal separation;

[0049] In the third step, the solid oil residue separated by the centrifuge 4 enters the dry residue collection box 5 through the residue outlet 41 for collection, and the separated liquid tar is discharged from the liquid outlet 42 to the liquid collection box 6 for collection;

[0050] In the fourth step, the oil residue in the dry residue collection box 5 is subsequently treated, and the tar in the liquid collection box 6 is pumped by the liquid return pump 7 to the ammonia clarification tank 1 for the next cycle treatment.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tar residue collection and drying device, used for collecting and drying tar residue in an ammonia water clarification tank (1), characterized in that: It comprises a scraper conveyor (2), a homogenizer (3), a centrifuge (4), a dry residue collection box (5), a liquid collection box (6), and a liquid return pump (7); The inlet of the scraper conveyor (2) is connected to the outlet of the ammonia water clarification tank (1), the outlet of the scraper conveyor (2) is connected to the inlet of the homogenizer (3), the outlet of the homogenizer (3) is connected to the inlet of the centrifuge (4), the centrifuge (4) is provided with a slag outlet (41) and a liquid outlet (42), the slag outlet (41) is connected to the dry slag collection box (5), the liquid outlet (42) is connected to the liquid collection box (6), the liquid return pump (7) is arranged in the liquid collection box (6), and the outlet of the liquid return pump (7) is connected to the ammonia water clarification tank (1).

2. The tar residue collection and drying device according to claim 1, characterized in that: An automatically regulating discharge valve (8) is provided between the outlet of the homogenizer (3) and the inlet of the centrifuge (4).

3. The tar residue collection and drying device according to claim 1, characterized in that: The slag outlet (41) of the centrifuge (4) and the dry slag collection box (5) are sealedly connected via a pneumatic sealing cover (9).

4. The tar residue collecting and drying device according to any one of claims 1 to 3, characterized in that: The invention comprises a heat preservation room (10), wherein the homogenizer (3), the automatic regulating discharge valve (8), the centrifuge (4) and the dry residue collection box (5) are arranged in the heat preservation room (10), and a Voc pipe (11) is also connected to the side wall of the heat preservation room (10).

5. The tar residue collection and drying device according to claim 4, characterized in that: The centrifuge (4) is a cone basket centrifuge. A self-discharging drum is provided inside the centrifuge (4) for separating the tar residue entering the centrifuge (4).

6. The tar residue collection and drying device according to claim 5, characterized in that: The centrifuge (4) is provided with a distributor.

7. The tar residue collection and drying device according to claim 6, characterized in that: The height of the liquid outlet of the centrifuge (4) is greater than the height of the inlet of the liquid collection box (6).

8. The tar residue collection and drying device according to claim 1, characterized in that: A heater is provided inside the liquid collection box (6) to heat the tar in the liquid collection box (6) so as to increase the temperature of the tar in the liquid collection box (6).

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