CN114350417A

CN114350417A - Coke oven gas purification device

Info

Publication number: CN114350417A
Application number: CN202210034053.XA
Authority: CN
Inventors: 向旭东; 罗建辉; 田宝山
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-04-15

Abstract

The invention discloses a coke oven gas purification device, which comprises a vertical tank body, wherein the upper end of the tank body is provided with a feed pipe and a gas outlet, the lower end of the tank body is provided with a sewage discharge outlet, the interior of the tank body is provided with a bottom plate and an umbrella cap, the bottom plate is provided with the inner lower end of the tank body, the included angle alpha range between the bottom plate and the horizontal direction is 45-60 degrees, the umbrella cap is arranged above the bottom plate, the bottom of the umbrella cap is provided with a gas inlet pipe which extends to the side surface of the tank body, and the side surface of the tank body is provided with a plurality of discharge ports; according to the invention, the tank body is provided with the discharge port, the tank body is internally provided with the conical umbrella cap, and the metallurgical coke can be automatically discharged by gravity after the discharge port is opened without manual carbon discharge; a steam inlet is arranged above the tank body to clean metallurgical coke in the tank; the conical umbrella cap can uniformly distribute metallurgical coke during the carbon feeding operation, and can uniformly distribute gas flow during the adsorption operation, thereby avoiding the inactivation of local metallurgical coke; the metallurgical coke is used for replacing active carbon, and can be recycled into the blast furnace for ironmaking after being cleaned by steam, so that resources are fully utilized.

Description

Coke oven gas purification device

Technical Field

The invention belongs to the technical field of coal gas purification, and particularly relates to a coke oven gas purification device.

Background

Coke oven gas, also known as coke oven gas, is a high calorific value gas due to its high combustible content. It is characterized by that several kinds of bituminous coals are made into the coking coal, and after the coking coal is undergone the process of high-temp. dry distillation in the coking furnace, at the same time of producing coke and tar product a combustible gas is produced, and is a by-product of coking industry. The main components of the gas are hydrogen (55-60%) and methane (23-27%), and in addition, the gas also contains a small amount of carbon monoxide (5-8%), unsaturated hydrocarbon (2-4%) above C2, and because the hydrogen and the carbon monoxide have high reducibility, the coke oven gas can be injected into the blast furnace in the blast furnace ironmaking process, and the consumption of coke in the blast furnace ironmaking process is reduced.

However, the coke oven gas contains organic substances such as unsaturated hydrocarbons, benzene, naphthalene, etc., which easily break the coke in the blast furnace, and then generate fragments to reduce the air permeability of the charge column and increase the amount of dust and carbon content of the dust, which are disadvantageous in blast furnace ironmaking, so that the coke oven gas needs to be purified before being injected into the blast furnace. The traditional method for purifying the gas is to remove impurities in the gas by utilizing the adsorption effect of the activated carbon, the activated carbon needs to be fished out after long-time use, and the process is usually finished manually; in the adsorption process, if airflow is uneven, local activated carbon is inactivated and loses the adsorption effect, so that the adsorption is not thorough; for iron and steel enterprises, activated carbon is not easy to obtain, and the cost of the activated carbon is higher than that of metallurgical coke, so that a coke oven gas purification device is provided.

Disclosure of Invention

The invention aims to provide a coke oven gas purification device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a coke oven gas purifier, includes a jar body, and jar body is vertical, and upper end and lower extreme are oval head, are equipped with filling tube and gas outlet on the oval head of jar body upper end, are equipped with the drain on the oval head of jar body lower extreme, and jar internal portion is equipped with bottom plate and umbrella hat, and the bottom plate setting is in the oval head top of lower extreme, and is alpha with the contained angle of horizontal direction, and the umbrella hat setting is in the bottom plate top, and the umbrella hat bottom is equipped with one and follows the trachea and extend to jar body side, and 1 intussuseption of jar body is filled with metallurgical burnt 5.

Furthermore, the umbrella cap is of a multistage conical structure and comprises a first-stage umbrella cap, a second-stage umbrella cap and a small umbrella cap, wherein the radius of the bottom circle of the second-stage umbrella cap is 50-60% of that of the first-stage umbrella cap, and the radius of the bottom circle of the small umbrella cap is 50-60% of that of the second-stage umbrella cap, so that coal gas flow is uniformly distributed and ascended, and metallurgical coke can be uniformly distributed during feeding; the first-stage umbrella cap, the second-stage umbrella cap and the small umbrella cap are sequentially arranged from bottom to top, wherein the axis is on a straight line in the vertical direction.

Furthermore, the radius of the upper circle of the first-stage umbrella cap is 20-30% of the radius of the bottom circle, and the radius of the upper circle of the second-stage umbrella cap is 20-30% of the radius of the bottom circle.

Furthermore, a wire mesh demister is arranged below the upper elliptical seal head in the tank body and used for removing mist after the coal gas is purified.

Furthermore, the included angle alpha between the bottom plate and the horizontal direction is 45-60 degrees, and the included angle alpha is larger than the repose angle of the metallurgical coke, so that the metallurgical coke can be discharged by means of gravity.

Furthermore, a plurality of discharge openings are formed in the side face of the tank body, and the discharge openings can be opened.

Further, the lower end of the feeding pipe is arranged right above the small umbrella cap.

Further, the top of the tank body is provided with a steam inlet.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the tank body is provided with the discharge port, the tank body is internally provided with the conical umbrella cap, and the metallurgical coke can be automatically discharged by gravity after the discharge port is opened without manual carbon discharge; a steam inlet is arranged above the tank body to clean metallurgical coke in the tank; the conical umbrella cap can uniformly distribute metallurgical coke during the carbon feeding operation, and can uniformly distribute gas flow during the adsorption operation, thereby avoiding the inactivation of local metallurgical coke; the metallurgical coke is used for replacing active carbon, and can be recycled into the blast furnace for ironmaking after being cleaned by steam, so that resources are fully utilized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a perspective view of the umbrella cap of the present invention;

in the figure: 1. a tank body; 2. an air inlet pipe; 3. a base plate; 4. an umbrella cap; 5. metallurgical coke; 6. a wire mesh demister; 7. a feed tube; 8. an air outlet; 9. a discharge outlet; 10. a sewage draining outlet; 11. a first-level umbrella cap; 12. a secondary umbrella cap; 13. a small umbrella cap; 14. fixing the rod; 15. and a steam inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides the following technical implementation scheme:

referring to fig. 1 to 2, a coke oven gas purification device comprises a tank body 1, wherein the tank body 1 is vertical, the upper end and the lower end are respectively provided with an elliptical seal head, the elliptical seal head at the upper end of the tank body 1 is provided with a feed pipe 7 and an air outlet 8, the elliptical seal head at the lower end of the tank body 1 is provided with a sewage discharge outlet 10, a bottom plate 3 and an umbrella cap 4 are arranged inside the tank body 1, the bottom plate 3 is arranged above the elliptical seal head at the lower end, an included angle alpha with the horizontal direction is formed, the umbrella cap 4 is arranged above the bottom plate 3, and the bottom of the umbrella cap 4 is provided with a follow-up air pipe 2 extending to the side face of the tank body 1.

Further, the umbrella cap 4 is of a multistage conical structure and comprises a first-stage umbrella cap 11, a second-stage umbrella cap 12 and a small umbrella cap 13, wherein the radius of the bottom circle of the second-stage umbrella cap 12 is 50-60% of that of the first-stage umbrella cap 11, the radius of the bottom circle of the small umbrella cap 13 is 50-60% of that of the second-stage umbrella cap 12, and the first-stage umbrella cap 11, the second-stage umbrella cap 12 and the small umbrella cap 13 are sequentially arranged from bottom to top, wherein the axis is on a straight line in the vertical direction.

Furthermore, the radius of the upper circle of the first-stage umbrella cap 11 is 20-30% of the radius of the bottom circle, and the radius of the upper circle of the second-stage umbrella cap 12 is 20-30% of the radius of the bottom circle.

Furthermore, a wire mesh demister 6 is arranged below the upper elliptical seal head in the tank body 1 and used for removing mist after gas purification.

Further, the included angle α between the bottom plate 10 and the horizontal direction is in the range of 45-60 °.

Furthermore, a plurality of discharge openings 9 are arranged on the side surface of the tank body 1, and the discharge openings 9 can be opened.

Further, the lower end of the charging pipe 7 is arranged right above the small umbrella cap 13.

Further, a steam inlet 15 is arranged at the top of the tank body 1.

The working principle and the using process of the invention are as follows:

when the coke oven gas adsorption device is used, coke oven gas enters the tank body 1 from the ground step gas inlet pipe 2, after the coke oven gas reaches the primary umbrella cap 11, because the radius of the bottom circle of the primary umbrella cap 11 is large, the radius of the upper circle is small, part of the coke oven gas escapes from the side surface of the primary umbrella cap 11 and is in contact with metallurgical coke for adsorption, the other part of the coke oven gas enters the secondary umbrella cap 12, similarly, one part of the coke oven gas entering the secondary umbrella cap 12 escapes from the side surface, the other part of the coke oven gas enters the small umbrella cap 13, all the coke oven gas entering the small umbrella cap 13 escapes from the side surface and is in contact with the metallurgical coke for adsorption, the coke oven gas can be uniformly in contact with the metallurgical coke through the arrangement of the multi-stage scattered caps, the adsorption is fully realized, and the metallurgical coke 5 is filled in the tank body 1.

When the metallurgical coke needs to be cleaned, steam is introduced from the steam inlet 15, and the generated condensate flows to the bottom of the tank body 1 through the small holes on the bottom plate 3 and is discharged.

When adding metallurgical burnt in jar body 1, add jar with metallurgical burnt from filling tube 7 in, metallurgical burnt falls to little umbrella hat 13 top, then the landing is to bottom plate 3 on, because the lower extreme setting of filling tube 7 is directly over little umbrella hat 13, can guarantee metallurgical burnt evenly distributed.

When metallurgical coke needs to be replaced, the discharge port 9 on the side surface of the tank body 1 is opened, and the metallurgical coke can slide down and be discharged out of the tank by means of the gravity of the metallurgical coke.

Claims

1. The utility model provides a coke oven gas purifier, includes jar body (1), jar body (1) is vertical, and upper end and lower extreme are oval head, its characterized in that: be equipped with filling tube (7) and gas outlet (8) on the oval head in jar body (1) upper end, be equipped with drain (10) on the oval head of jar body (1) lower extreme, jar body (1) is inside to be equipped with bottom plate (3) and umbrella cap (4), and bottom plate (3) set up in the oval head top of lower extreme, and is alpha with the contained angle of horizontal direction, and umbrella cap (4) set up in bottom plate (3) top, and umbrella cap (4) bottom is equipped with intake pipe 2 and extends to jar body (1) side, jar body (1) side is equipped with a plurality of bin outlet (9), and jar body (1) intussuseption is filled with metallurgical burnt (5).

2. The coke oven gas purification device of claim 1, wherein: umbrella cap (4) are multistage toper structure, including one-level umbrella cap (11), second grade umbrella cap (12) and little umbrella cap (13), and one-level umbrella cap (11), second grade umbrella cap (12) and little umbrella cap (13) from the bottom up arrange in proper order, and its axis is on the straight line of vertical direction.

3. The coke oven gas purification device of claim 2, wherein: the radius of the bottom circle of the second-stage umbrella cap (12) is 50-60% of that of the first-stage umbrella cap (11), and the radius of the bottom circle of the small umbrella cap (13) is 50-60% of that of the second-stage umbrella cap (12).

4. The coke oven gas purification device of claim 2, wherein: the radius of the upper circle of the first-stage umbrella cap (11) is 20-30% of the radius of the bottom circle, and the radius of the upper circle of the second-stage umbrella cap (12) is 20-30% of the radius of the bottom circle.

5. The coke oven gas purification device of claim 1, wherein: and a wire mesh demister (6) is arranged below the upper elliptical seal head in the tank body (1) and is used for removing mist after the coal gas is purified.

6. The coke oven gas purification device of claim 1, wherein: the included angle alpha between the bottom plate (10) and the horizontal direction is 45-60 degrees.

7. The coke oven gas purification device of claim 1, wherein: the lower end of the feed pipe (7) is arranged right above the small umbrella cap (13).

8. The coke oven gas purification device of claim 1, wherein: the top of the tank body (1) is provided with a steam inlet (15).