Coking waste gas treatment device

Abstract

The invention discloses a coking waste gas treatment device which comprises a tower body, the tower body comprises a tower shell, a plurality of isolation bearing plates are arranged in the tower shell, and an activated carbon adsorption assembly is arranged on the isolation bearing plate on the uppermost layer; a gas absorption mechanism is arranged on the isolation bearing plate below the activated carbon adsorption assembly, and comprises a plurality of absorption cylinders filled with absorption liquid. According to the invention, through the multi-stage gas absorption mechanism arranged in the vertical direction, different absorbents can be adopted to absorb and treat coking waste gas, and by combining the uppermost activated carbon adsorption assembly, the treatment efficiency is high, the treatment effect can be ensured, and the device can be suitable for treating high-concentration waste gas, and is high in integration level and small in occupied area.

Description

Technical Field

[0001] The present invention relates to the technical field of coking waste gas treatment, and particularly to a coking waste gas treatment device. Background Art

[0002] The components of VOCs waste gas produced in different working stations of the coking industry are different. For the convenience of treatment, generally, the VOCs waste gas from each working station is first mixed, and then subjected to processes such as oil washing, alkali washing, and acid washing in sequence. Among them, processes such as oil washing, alkali washing, and acid washing are generally realized through a spray tower. However, through multiple different spray treatments, not only does the equipment occupy a large area, but also the treatment efficiency is low, and it is not suitable for treating high-concentration waste gas. The absorption method is a common treatment method for coking waste gas. A single absorbent has limited treatment effect on coking waste gas. For example, water is commonly used as an absorbent, but water generally has a good absorption effect on inorganic gases such as ammonia, and the absorption effect on organic gases is not obvious, which affects the treatment effect. Summary of the Invention

[0003] Therefore, based on the above background, the present invention provides a coking waste gas treatment device, which uses different absorbents to absorb and treat coking waste gas through a multi-stage gas absorption mechanism, has high treatment efficiency, can be applied to the treatment of high-concentration waste gas, and has high integration and a small occupied area.

[0004] The technical solution provided by the present invention is as follows:

[0005] A coking waste gas treatment device, which includes a tower body. The tower body includes a tower shell. A plurality of isolation bearing plates are arranged in the tower shell. An activated carbon adsorption assembly is arranged on the topmost isolation bearing plate. A first total exhaust pipe is arranged at the top of the tower shell. The waste gas treated by the activated carbon adsorption assembly is discharged through the first total exhaust pipe;

[0006] A gas absorption mechanism is arranged on the isolation bearing plate below the activated carbon adsorption assembly. The gas absorption mechanism includes a plurality of absorption cylinders for containing absorbent liquid. The lower part of the absorption cylinder on the lowermost isolation bearing plate is communicated with a waste gas pipe. The upper part of the absorption cylinder is communicated with a second total exhaust pipe. The second total exhaust pipe communicated with the absorption cylinders at the lowermost and middle positions is communicated with the lower part of an isolation cylinder on the isolation bearing plate above it;

[0007] The second total exhaust pipe communicated with the uppermost isolation cylinder is communicated with the lower part of the activated carbon adsorption assembly.

[0008] Further, the number of the isolation bearing plates is 4.

[0009] Further, the upper part of one of the absorption cylinders of each gas absorption mechanism is communicated with a liquid inlet pipe. The absorption cylinders are communicated with each other through a first connecting pipe. The first connecting pipe is close to the upper part of the absorption cylinder.

[0010] Further, the lower part of one of the absorption cylinders of each gas absorption mechanism is communicated with a drain pipe, and the drain pipe is communicated with a main drain pipe.

[0011] Further, a first electromagnetic control valve is provided on the drain pipe.

[0012] Further, the top of the absorption cylinder is communicated with the second main outlet pipe through an exhaust pipe.

[0013] Further, a second electromagnetic control valve is provided on the exhaust pipe.

[0014] Further, the absorption cylinder is communicated with a waste gas pipe or the second main outlet pipe through an inlet pipe.

[0015] Further, a third electromagnetic control valve is provided on the inlet pipe.

[0016] Adopting the above technical solutions, the beneficial effects are as follows:

[0017] By means of the multi-stage gas absorption mechanisms arranged in the up-and-down direction, the present invention can meet the absorption treatment of coking waste gas with different absorbents. Combined with the activated carbon adsorption assembly at the uppermost part, not only the treatment efficiency is high, but also the treatment effect can be ensured. It is applicable to the treatment of high-concentration waste gas, and has a high degree of integration and a small occupied area.

[0018] Moreover, by introducing the gas into a plurality of absorption cylinders, the present invention can increase the contact area with the absorption liquid, so as to further improve the absorption effect and the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Att Figure 1 is a schematic structural diagram of the present invention Figure 1 .

[0021] Att Figure 2 is a schematic structural diagram of the present invention Figure 2 .

[0022] Att Figure 3 is a schematic cross-sectional structural diagram of the present invention.

[0023] Att Figure 4 is a schematic internal structural diagram of the present invention Figure 1。

[0024] Appendix Figure 5 is a schematic diagram of the internal structure of the present invention Figure 2 。

[0025] Appendix Figure 6 is a schematic diagram of the structure of the gas absorption mechanism of the present invention Figure 1 。

[0026] Appendix Figure 7 is a schematic diagram of the structure of the gas absorption mechanism of the present invention Figure 2 。

[0027] Appendix Figure 8 is a schematic diagram of the structure of the gas absorption mechanism of the present invention Figure 3 。

[0028] Appendix Figure 9 is a schematic diagram of the structure of the gas absorption mechanism of the present invention Figure 4 。

[0029] Specifically, the implementation mode

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] The following details the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. are based on the orientation 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 thus should not be construed as a limitation of the present invention.

[0032] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Example 1: According to Figures 1 to 9 A coking waste gas treatment device as shown, which includes a tower body. The tower body includes a tower shell 1. A number of isolation bearing plates are provided inside the tower shell 1. An activated carbon adsorption assembly 7 is provided on the topmost isolation bearing plate. A first main exhaust pipe 2 is provided at the top of the tower shell. The waste gas treated by the activated carbon adsorption assembly 7 is discharged through the first main exhaust pipe. A gas absorption mechanism 6 is provided on the isolation bearing plate below the activated carbon adsorption assembly. The gas absorption mechanism includes a number of absorption cylinders 9 for containing absorption liquid. The lower part of the absorption cylinder located on the lowermost isolation bearing plate is connected to a waste gas pipe 8. The upper part of the absorption cylinder is connected to a second main exhaust pipe 12. The second main exhaust pipe 12 connected to the absorption cylinders located at the lowermost and middle parts is connected to the lower part of an isolation cylinder on the isolation bearing plate above it.

[0035] The second main exhaust pipe connected to the isolation cylinder located at the uppermost part is connected to the lower part of the activated carbon adsorption assembly.

[0036] The number of the isolation bearing plates is 4. Specifically, absorption cylinders for containing oil absorbent, absorption cylinders for containing alkali absorbent, and absorption cylinders for containing acid absorbent are successively provided on the isolation bearing plates from top to bottom. After multi-stage liquid absorption of coking waste gas by filling different absorbents from bottom to top and finally performing adsorption treatment with activated carbon, the waste gas treatment effect can be ensured.

[0037] The activated carbon adsorption assembly 7 includes an isolation shell installed on the isolation bearing plate, and activated carbon is filled in the isolation shell.

[0038] Specifically as Figure 9 shown, the upper part of one of the absorption cylinders 9 of each gas absorption mechanism 6 is connected to a liquid inlet pipe 3. The absorption cylinders 9 are connected to each other through a first connecting pipe 20. The first connecting pipe 23 is close to the upper part of the absorption cylinder 9. Specifically, the liquid inlet pipe 3 is connected to the liquid outlet pipe of the liquid pump of the absorption liquid storage tank corresponding to the absorption cylinder. More specifically, a liquid level gauge is provided inside the absorption cylinder 9.

[0039] The lower part of one of the absorption cylinders 9 of each gas absorption mechanism 6 is connected to a drain pipe 16. The drain pipe 16 is connected to a main drain pipe 4. A first electromagnetic control valve 17 is provided on the drain pipe 16.

[0040] The top of the absorption cylinder 9 is connected to the second main exhaust pipe 12 through an exhaust pipe 12. Specifically, a cover body detachably connected by a flange is provided on the absorption cylinder, and the exhaust pipe is provided on the cover body. A second electromagnetic control valve 13 is provided on the exhaust pipe 12.

[0041] The absorption cylinder body 9 communicates with the waste gas pipe 8 or the second outlet main pipe 12 through an intake pipe 14. A third electromagnetic control valve 15 is provided on the intake pipe 14. Specifically, the intake of the absorption cylinder body can be controlled by the third electromagnetic control valve, which can improve the flexibility and stability of use. For example, if the gas volume or gas concentration is small, the third electromagnetic control valve can be controlled to cut off, so that part of the absorption cylinder body does not receive gas for treatment.

[0042] The present invention is more suitable for small-scale treatment of coking waste gas in small-scale tests or pilot tests. It can perform multi-stage absorption treatment on high-concentration coking waste gas, with not only high treatment efficiency, but also high integration and small floor area.

[0043] The present invention and its embodiments have been described above. Such a description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the purpose of the present invention, they should fall within the protection scope of the present invention.

Claims

1. A coking waste gas treatment device, which comprises a tower body, and the tower body comprises a tower shell, and is characterized in that, a plurality of isolation bearing plates are arranged in the tower shell, an activated carbon adsorption assembly is arranged on the uppermost isolation bearing plate, a first total exhaust pipe is arranged at the top of the tower shell, and the waste gas treated by the activated carbon adsorption assembly is discharged through the first total exhaust pipe; a gas absorption mechanism is arranged on the isolation bearing plate below the activated carbon adsorption assembly, the gas absorption mechanism comprises a plurality of absorption cylinders for containing absorption liquid, the lower part of the absorption cylinder on the lowermost isolation bearing plate is communicated with a waste gas pipe, the upper part of the absorption cylinder is communicated with a second total exhaust pipe, and the second total exhaust pipe communicated with the absorption cylinders at the lowermost and middle positions is communicated with the lower part of an isolation cylinder on the isolation bearing plate above it; the second total exhaust pipe communicated with the uppermost isolation cylinder is communicated with the lower part of the activated carbon adsorption assembly.

2. The coking waste gas treatment device according to claim 1, characterized in that, The number of the isolation bearing plates is 4.

3. The coking waste gas treatment device according to claim 1, characterized in that, The upper part of one of the absorption cylinders of each gas absorption mechanism is communicated with a liquid inlet pipe, and the absorption cylinders are communicated with each other through a first connecting pipe, and the first connecting pipe is close to the upper part of the absorption cylinder.

4. The coking waste gas treatment device according to claim 1, characterized in that, The lower part of one of the absorption cylinders of each gas absorption mechanism is communicated with a liquid discharge pipe, and the liquid discharge pipe is communicated with a total liquid discharge pipe.

5. An apparatus for treating coking waste gas according to claim 4, characterized in that, A first electromagnetic control valve is arranged on the liquid discharge pipe.

6. The coking waste gas treatment device according to claim 1, wherein The top of the absorption cylinder is communicated with the second total exhaust pipe through an exhaust pipe.

7. An apparatus for treating coking waste gas according to claim 6, characterized in that, A second electromagnetic control valve is arranged on the exhaust pipe.

8. An apparatus for treating coking waste gas according to claim 1, characterized in that, The absorption cylinder is communicated with the waste gas pipe or the second total exhaust pipe through an intake pipe.

9. The coking waste gas treatment device according to claim 8, characterized in that, A third electromagnetic control valve is arranged on the intake pipe.

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