CN219519200U

CN219519200U - Tar residue treatment device

Info

Publication number: CN219519200U
Application number: CN202320856322.0U
Authority: CN
Inventors: 郑猛; 宋健; 张智; 王超; 刘学刚; 王军平
Original assignee: Tianjin Iron Works Co ltd
Current assignee: Tianjin Iron Works Co ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-08-15
Anticipated expiration: 2033-04-17

Abstract

The utility model discloses a tar residue treatment device, which belongs to the technical field of coking environmental protection and comprises a liquefaction tank; an ammonia water pipeline and a steam pipeline are arranged on the liquefied tank; a feeding machine is arranged at the top of the liquefaction tank; the liquefaction tank is connected with a crusher through a pipeline, and a grinding cover, a three-blade and a filter screen are arranged in the crusher; the crusher is connected with the centrifugal machine through a pipeline, the liquefying tank is connected with the centrifugal machine through a VOCs collecting pipeline, a tar pipeline is arranged on the centrifugal machine, and a slag drying tank is arranged below a discharge hole of the centrifugal machine. The separated tar can be returned to a tar storage tank to be sold as finished tar; the dry slag can be directly mixed with coking coal to prepare molded coal for coking in a coke oven; the tail gas is conveyed to a VOCs collecting pipeline for further treatment; solves a series of pollution problems of tar residue storage, transportation and treatment, realizes recycling of waste, and well solves the problem of environmental pollution.

Description

Tar residue treatment device

Technical Field

The utility model belongs to the technical field of coking environmental protection, and particularly relates to a tar residue treatment device.

Background

As is well known, tar slag is a viscous solid slag with coal tar adsorbed therein, which is produced in the coking process, and is a corrosive, adhesive, toxic and harmful substance. The tar slag is a dangerous waste specified in the national dangerous waste list, and if the tar slag is not properly handled in storage, transportation and treatment, the tar slag is seriously harmful to the ecological environment and human health, and the tar slag generated in the coking process must be subjected to harmless treatment.

At present, the common practice of tar residues generated by a mechanical clarifying tank and an ammonia water tar separator of a coking plant is to send the tar residues to a coal yard for blending coal. Because tar residue contains tar and contains more water, the tar residue cannot be fully mixed with the matched coal, so that the coal blending effect is not ideal, the coal adding operation of the coke oven is affected, and the site environment is polluted; some tar slag substances deposited at the bottom of each tar storage tank of a coking plant are cleaned regularly every year, and the cleaned tar slag cannot be treated, but is treated by a unit with dangerous waste treatment qualification, so that higher external commission treatment cost is required.

The conventional treatment method of the tar residue mainly adopts a mechanical scraping plate or a storage tank for precipitation and collection, and has great influence on the environment, facilities and byproduct recovery in the process of collection and transportation. Therefore, the harmless and environment-friendly technical transformation of the tar residues is an urgent requirement for the sustainable development of the coking industry at present.

In addition, the coal tar slag also contains a large amount of fixed carbon and organic components, has higher heating value, and is the best way for solving the problem of coal tar slag if the coal tar slag can be turned into benefits and turned into wealth.

Disclosure of Invention

The utility model provides a tar residue treatment device for solving the technical problems in the prior art, which can realize separation of tar and dry residue after liquefying, crushing and separating tar residue, solves the problem that wet residue is difficult to separate, improves the site environment and meets the requirement of environmental protection.

The utility model aims to provide a tar residue treatment device, which comprises a liquefying tank; an ammonia water pipeline and a steam pipeline are arranged on the liquefied tank; a feeding machine is arranged at the top of the liquefaction tank; the liquefaction tank is connected with a crusher through a pipeline, and a grinding cover, a three-blade and a filter screen are arranged in the crusher; the crusher is connected with the centrifugal machine through a pipeline, the liquefying tank is connected with the centrifugal machine through a VOCs collecting pipeline, a tar pipeline is arranged on the centrifugal machine, and a slag drying tank is arranged below a discharge hole of the centrifugal machine.

Preferably, the feeding machine is a spiral automatic feeding machine.

Preferably, an openable gland is arranged at the top of the liquefaction tank, and the spiral automatic feeding machine (1) is connected with the liquefaction tank through the openable gland.

Preferably, the ammonia water pipeline is connected with the top of the side wall of the liquefaction tank.

Preferably, the top of the liquefaction tank is connected with the top of the centrifuge through a VOCs collecting pipeline.

Preferably, the bottom of the side wall of the liquefaction tank is connected with the top of the crusher through a pipeline.

Preferably, the grinding hood is located above a three-bladed blade located above the screen.

The utility model has the advantages and positive effects that:

the separated tar can be returned to a tar storage tank to be sold as finished tar; the dry slag can be directly mixed with coking coal to prepare molded coal for coking in a coke oven; the tail gas is conveyed to a VOCs collecting pipeline for further treatment; solves a series of pollution problems of tar residue storage, transportation and treatment, realizes recycling of waste, and well solves the problem of environmental pollution.

Drawings

FIG. 1 is a block diagram of a preferred embodiment of the present utility model;

wherein: 1. a spiral automatic feeding machine; 2. an ammonia water pipeline; 3. a liquefaction tank; 4. a steam line; 5. a crusher; 6. a polishing cover; 7. three-blade blades; 8. a filter screen; 9. a centrifuge; 10. a tar pipeline; 11. a slag drying tank; 12. VOCs collecting pipeline; 13. an openable gland.

Detailed Description

In order to make the above-mentioned objects, control system of design and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the following examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1, the technical scheme of the utility model is as follows:

a tar residue treatment device comprises a liquefaction tank 3, a crusher 5 and a centrifuge 9; wherein: an ammonia water pipeline 2 and a steam pipeline 4 are arranged on the liquefaction tank 3; a feeding machine is arranged at the top of the liquefaction tank 3; the liquefaction tank 3 is connected with the crusher 5 through a pipeline, and a grinding cover 6, a three-blade 7 and a filter screen 8 are arranged in the crusher 5; the crusher 5 is connected with the centrifugal machine 9 through a pipeline, the liquefaction tank 3 is connected with the centrifugal machine 9 through a VOCs collecting pipeline 12, a tar pipeline 10 is arranged on the centrifugal machine 9, and a slag drying groove 11 is arranged below a discharge hole of the centrifugal machine 9. In the preferred embodiment, the feeder is selected from a screw automatic feeder 1. An openable gland 13 is arranged at the top of the liquefaction tank 3, and the spiral automatic feeding machine 1 is connected with the liquefaction tank 3 through the openable gland 13. The ammonia water pipeline 2 is connected with the top of the side wall of the liquefaction tank 3. The top of the liquefied tank 3 and the top of the centrifuge 9 are connected through a VOCs collecting pipeline 12. The bottom of the side wall of the liquefaction tank 3 is connected with the top of the crusher 5 through a pipeline. The grinding cover 6 is positioned above the three-bladed blade 7, and the three-bladed blade 7 is positioned above the filter screen 8. The three-blade is made of high-strength corrosion-resistant steel sheets.

Working principle:

the tar residue discharged from the residue discharge port of the mechanical clarifying tank is brought into the tar residue liquefying tank 3 by the spiral automatic feeding machine 1, and is pretreated by heating and stirring with ammonia water 2 or steam 4 (a stirring device can be arranged in the liquefying tank 3), fully mixed and achieves a certain softening effect.

The pretreated tar slag is sent to a crusher 5 for crushing and refining treatment, and is repeatedly ground and crushed into fine particles by two three-blade blades 7 arranged on the crusher and then is sent to a high-efficiency centrifugal machine 9. The crusher adopts three blades 7 rotating at high speed, and adopts a double blade combination for enhancing the crushing speed. The grinding cover 6 is arranged on the upper part of the three-blade 7, so that the effects of increasing crushing resistance and reducing noise can be achieved, and the purpose of full crushing can be achieved by matching with the blade. And the large-particle tar residues are fully contacted with the three-blade in the feeding process, repeatedly polished and crushed, finally become tiny particles, and the large-particle tar residues are filtered out by the filter screen 8 to be continuously crushed and ground. The small particles are sieved by a filter screen and then enter a storage tank funnel.

And finally, fully separating the small-particle tar residues by a high-efficiency centrifugal machine 9 to obtain tar dry residues and finished tar, and fully separating the tar, the dry residues and tail gas.

The tar is conveyed to a tar storage tank through a pipeline, dry tar residues participate in coal blending, and tail gas is strongly discharged into a VOCs pipeline for treatment. In order to avoid environmental pollution, all the pipelines need to adopt a closed conveying mode.

In addition, in order to solve the problem of disposal of tar residue which is regularly cleaned out of the bottom of the tar storage tank, the top of the liquefaction tank 3 is provided with an openable gland 13 so as to facilitate filling of tar residue, and the tar residue produced in a coking plant can be completely subjected to liquefaction, crushing and centrifugal separation treatment, so that the reduction of the tar residue source is realized.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims

1. A tar residue treatment device, which is characterized by comprising a liquefying tank (3); an ammonia water pipeline (2) and a steam pipeline (4) are arranged on the liquefaction tank (3); a feeding machine is arranged at the top of the liquefaction tank (3); the liquefaction tank (3) is connected with the crusher (5) through a pipeline, and a grinding cover (6), a three-blade (7) and a filter screen (8) are arranged in the crusher (5); the crusher (5) is connected with the centrifugal machine (9) through a pipeline, the liquefying tank (3) is connected with the centrifugal machine (9) through a VOCs collecting pipeline (12), a tar pipeline (10) is arranged on the centrifugal machine (9), and a slag drying groove (11) is arranged below a discharge hole of the centrifugal machine (9).

2. The tar-residue treatment device according to claim 1, characterized in that the feeder is a screw automatic feeder (1).

3. The tar residue treatment device according to claim 2, characterized in that an openable gland (13) is mounted on top of the liquefaction tank (3), and the screw automatic feeder (1) is connected with the liquefaction tank (3) through the openable gland (13).

4. The tar residue treatment device according to claim 1, characterized in that the ammonia line (2) is connected to the top of the side wall of the liquefaction tank (3).

5. The tar residue treatment device according to claim 1, characterized in that the top of the liquefaction tank (3) and the top of the centrifuge (9) are connected by a VOCs collection line (12).

6. The tar residue treatment device according to claim 5, characterized in that the bottom of the side wall of the liquefaction tank (3) is connected with the top of the crusher (5) by a pipe.

7. The tar-residue treatment device according to claim 1, characterized in that the grinding hood (6) is located above a three-bladed blade (7), the three-bladed blade (7) being located above a filter screen (8).