Device for reducing particulate matters in coke oven flue gas

Abstract

The utility model discloses a device for reducing particulate matters in coke oven flue gas, which belongs to the technical field of coking dust removal and comprises a first chamber communicated with a flue gas inlet pipe and a second chamber communicated with a flue gas outlet pipe, a spraying pipe is mounted in the first chamber; the collecting pipe is communicated with the bottom of the first chamber; an adjuster is arranged in the collecting pipe; the flue is communicated with the collecting pipe; the liquid storage tank is communicated with the flue; a baffle plate and a grid demisting plate are arranged in the liquid storage tank; an exhaust pipe is mounted at the top or on the side wall of the liquid storage tank; a primary gas-liquid separator is mounted at the bottom of the liquid storage tank; the flue gas outlet pipe is communicated with the bottom of the liquid storage tank; and the second-stage gas-liquid separator is communicated with the bottom of the flue gas outlet pipe. By the adoption of the technical scheme, particulate matter in coke oven flue gas can be effectively removed, so that the content of the particulate matter in the flue gas is reduced, and it is ensured that the environment-friendly requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of coking dust removal, and particularly relates to a device for reducing particulate matter in coke oven flue gas. Background Art

[0002] During the production process of coke ovens in coking plants, a large amount of flue gas is generated. To treat this flue gas, the currently common method is to establish a set of flue gas desulfurization and denitrification devices to remove sulfur dioxide and nitrogen oxides in the flue gas, thereby achieving the purpose of purifying the flue gas. In the process of purifying sulfur dioxide, catalytic technology is mainly used, and sulfur dioxide in the flue gas is removed through the action of a catalyst. The catalyst layer in the desulfurization tower can not only remove sulfur dioxide, but also has a certain dust removal ability. When the flue gas enters the desulfurization tower, part of the particulate matter can be removed due to the adsorption effect of the catalyst layer. However, this adsorption effect will reduce the activity of the catalyst. Therefore, after being used for a period of time, new catalysts must be replaced to ensure the normal performance of the flue gas desulfurization effect. In this way, the consumption of desulfurization catalysts will increase, resulting in an increase in the energy consumption of the process.

[0003] Especially when the particulate matter content at the flue gas inlet is relatively high, the adsorption effect of the desulfurizer layer cannot completely remove all particulate matter, which easily leads to excessive particulate matter at the outlet, thus triggering environmental protection accidents. Therefore, in order to reduce the energy consumption of the process and ensure that the flue gas can meet the emission standards, there is an urgent need to develop a new device that can effectively remove particulate matter in coke oven flue gas, thereby reducing the particulate matter content in the flue gas and ensuring that environmental protection requirements are met. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a device for reducing particulate matter in coke oven flue gas, which can effectively remove particulate matter in coke oven flue gas, thereby reducing the particulate matter content in the flue gas and ensuring that environmental protection requirements are met.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A device for reducing particulate matter in coke oven flue gas, comprising:

[0007] A first chamber communicated with the flue gas inlet pipe; a spray pipe is installed in the first chamber;

[0008] A collecting pipe communicated with the bottom of the first chamber; a regulator is arranged in the collecting pipe;

[0009] A flue communicated with the collecting pipe;

[0010] A liquid storage tank connected to the flue; a baffle plate and a mesh demisting plate are arranged in the liquid storage tank; an exhaust pipe is installed at the top or side wall of the liquid storage tank; a primary gas-liquid separator is installed at the bottom of the liquid storage tank;

[0011] A flue gas outlet pipe connected to the bottom of the liquid storage tank;

[0012] A secondary gas-liquid separator connected to the bottom of the flue gas outlet pipe.

[0013] Preferably, an induced draft fan is installed on the first chamber.

[0014] Preferably, the spray pipe is pre-filled with washing liquid.

[0015] Preferably, the manifold is in a funnel-shaped structure.

[0016] Preferably, the flue is connected to the side wall of the liquid storage tank.

[0017] Preferably, the flue gas outlet pipe is in a funnel-shaped structure.

[0018] Compared with the prior art, the advantages and positive effects of this application are:

[0019] The utility model realizes the efficient removal of particulate matter through a compact design and a multi-stage particle removal process, ensures that the purified gas meets the emission standards, reduces the energy consumption of the process. The utility model can effectively remove the particulate matter in the coke oven flue gas, thereby reducing the particulate matter content in the flue gas and ensuring that the environmental protection requirements are met.

[0020] Specifically, the utility model is mainly a device for purifying the particulate matter in the dusty flue gas of the coke oven by using the suction force of the fan and the washing liquid. After the dusty flue gas enters the first chamber through the inlet pipe, it is fully mixed with the washing liquid, and most of the dust particles are captured by the powerful water jet. In this stage, mainly relying on the impact force of water and the adsorption effect of the washing liquid, the larger dust particles are separated from the gas flow. Subsequently, it enters the manifold, and the cross-section of the flue gas is adjusted by the regulator at the contraction section of the manifold, and then the flow rate of the flue gas is changed to generate a powerful shear force, mixing the gas-liquid into fine water mist. Then the gas flow enters the primary gas-liquid separator through the flue, and the heavier water mist sinks under the action of gravity. After the primary capture, the residual dust particles in the gas flow will collide with the baffle and be captured by the baffle plate, agglomerating into larger water droplets and falling into the liquid storage tank for regular discharge. Subsequently, the flue gas enters the fine-pore mesh demisting plate at the upper end to further remove the water mist. After multi-level treatment, the clean gas is discharged through the top. Through a compact design and a multi-stage particle removal process, the efficient removal of particulate matter is realized, ensuring that the purified gas meets the emission standards. Description of the Drawings

[0021] 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, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural diagram of a preferred embodiment of this application;

[0023] Figure 2 Top view of the baffle plate in a preferred embodiment of this application.

[0024] Wherein: 1, induced draft fan; 2, flue gas inlet pipe; 3, spray pipe; 4, manifold; 5, regulator; 6, flue; 7, primary gas-liquid separator; 8, flue gas outlet pipe; 9, secondary gas-liquid separator; 10, baffle plate; 11, mesh demister; 12, exhaust pipe. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0027] Please refer to Figure 1 and Figure 2 , a device for reducing particulate matter in coke oven flue gas, comprising:

[0028] The first chamber communicating with the flue gas inlet pipe 2; a spray pipe 3 is installed in the first chamber; in order to facilitate the smooth entry of flue gas into the first chamber, an induced draft fan 1 can be installed on the first chamber, and the induced draft fan 1 is used to make the flue gas smoothly enter the first chamber; the spray pipe 3 is pre-stored with washing liquid in advance;

[0029] A manifold 4 communicating with the bottom of the first chamber; a regulator 5 is arranged in the manifold 4; the manifold 4 can be of a funnel-shaped structure; when observed from top to bottom, the regulator 5 is similar to a throat or a semi-circular structure and is used to change the flow area.

[0030] A flue 6 communicating with the manifold 4;

[0031] A liquid storage tank communicating with the flue 6; specifically, the flue 6 communicates with the side wall of the liquid storage tank; a baffle 10 and a wire mesh demister 11 are arranged in the liquid storage tank; an exhaust pipe 12 is installed on the top or side wall of the liquid storage tank; a primary gas-liquid separator 7 is installed at the bottom of the liquid storage tank; the baffle 10 is composed of a plurality of baffle plates with curved surface structures;

[0032] A flue gas outlet pipe 8 communicating with the bottom of the liquid storage tank; the flue gas outlet pipe 8 is of a funnel-shaped structure;

[0033] A secondary gas-liquid separator 9 communicating with the bottom of the flue gas outlet pipe 8.

[0034] Working principle:

[0035] The dusty flue gas enters the first chamber through the flue gas inlet pipe 2 under the action of the induced draft fan 1. After the dusty flue gas is fully mixed with the washing liquid, most of the dust particles are captured by the powerful water jet. In this stage, mainly relying on the impact force of water and the adsorption effect of the washing liquid, the larger dust particles are separated from the gas flow. Subsequently, the flue gas enters the manifold 4, and the cross-section of the flue gas is adjusted by the regulator 5 at the contraction section of the manifold 4, thereby changing the flow rate of the flue gas and generating a powerful shear force to mix the gas and liquid into fine water mist. Subsequently, the gas flow enters the primary gas-liquid separator 7 through the flue 6, and the heavier water mist sinks under the action of gravity. After the primary capture, the residual dust particles in the gas flow collide with the baffle and are captured by the baffle plate, agglomerating into larger water droplets and falling into the liquid storage tank for regular discharge. Subsequently, the flue gas enters the fine pore wire mesh demister at the upper end to further remove the water mist. After multi-level treatment, the clean gas is discharged through the top or side wall.

[0036] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An apparatus for reducing particulate matter in coke oven flue gas, characterized in that, Comprising: A first chamber communicating with the flue gas inlet pipe (2); a spray pipe (3) is installed in the first chamber; A manifold (4) communicating with the bottom of the first chamber; a regulator (5) is provided in the manifold (4); A flue (6) communicating with the manifold (4); A liquid storage tank communicating with the flue (6); a baffle plate (10) and a wire mesh demister (11) are provided in the liquid storage tank; an exhaust pipe (12) is installed at the top or side wall of the liquid storage tank; a primary gas-liquid separator (7) is installed at the bottom of the liquid storage tank; A flue gas outlet pipe (8) communicating with the bottom of the liquid storage tank; A secondary gas-liquid separator (9) communicating with the bottom of the flue gas outlet pipe (8).

2. The device for reducing particulate matter in coke oven flue gas according to claim 1, characterized in that, A draft fan (1) is installed on the first chamber.

3. The device for reducing particulate matter in coke oven flue gas according to claim 1, characterized in that, The spray pipe (3) is pre-filled with washing liquid.

4. The device for reducing particulate matter in coke oven flue gas according to claim 1, characterized in that The manifold (4) is of a funnel-shaped structure.

5. The device for reducing particulate matter in coke oven flue gas according to claim 1, wherein The flue (6) communicates with the side wall of the liquid storage tank.

6. The device for reducing particulate matter in coke oven flue gas according to claim 1, characterized in that, The flue gas outlet pipe (8) is of a funnel-shaped structure.

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