CN104987870B - The small burner dust arrester of coke oven coke side - Google Patents

Abstract

A small burner head dust removal device on the coke side of a coke oven. A furnace top dust collection fan is arranged above the furnace roof baseline. The furnace top dust collection fan is connected to the small burner head dust removal dry pipe; Under the coal flue gas switching valve, the two ends of each two adjacent small burners are respectively erected with vertical coal car motorcycle brackets, forming a structure in which the coal adding flue gas switching valve is located between the adjacent coal car motorcycle brackets. Every two adjacent small burners share a bucket-type dust collection hood, and each bucket-type dust collection hood is respectively connected to the dry dust removal pipe of the small burner with a branch pipe and a flap valve; its advantage is that it efficiently solves the problem of the existing ground station Or the coke discharge dust removal device on the coke stopping vehicle cannot eliminate the problem of smoke and dust escape from the small furnace head of the chamber coke oven. The CDQ environment dust removal station or the coal feeding ground dust removal station equipped with a flame arrester can be used without self-equipped dust collectors. Therefore, investment can be saved, and the installation on the top of the coke oven has a longer service life than that installed on the vehicle-mounted fan of the coke hauler, and the maintenance cost is reduced with minor faults, and the maintenance and construction are more convenient.

Description

Coke oven coke side small burner head dedusting device

technical field

The invention relates to the technical field of coking and environmental protection, in particular to a dust removal device for a small burner head on the coke side of a chamber-type coke oven.

Background technique

Coking is a multi-source pollution industry, and smoke and dust are the main pollutant fugitives in the coking production process. Modern chamber coke ovens are generally equipped with vehicle-mounted or ground station coal charging and coke discharge dust removal systems, of which the ground station dust removal system is widely used. The ground station type coke discharge dust removal system mainly uses hydraulic coupling or frequency conversion control fans to collect most of the smoke dust on the coke side through the collection cover set on the coke stop car and purifies it through the coke discharge dust collector. However, part of the smoke and dust still escapes from the small burner head on the coke side, which deteriorates the working environment. The coke discharge smoke from the small burner on the coke side comes from the four stages of opening the furnace door, the initial entry of red coke into the grid, continuous coke pushing and closing of the furnace door, among which the smoke and dust in the initial entry of red coke into the grid is the most prominent.

Due to the difference in the distance from the front of the single small furnace head, furnace door frame and furnace pillar on the coke side to the center of the coke stop car track, in order to prevent the coke guide grid from being scraped by the bucket-type dust collection cover against the furnace pillar, the near furnace body end and the coke side are small The burner fronts are widely spaced, leaving a structural defect for smoke to escape from the small burner.

The temperature of the coke discharge smoke is high, the instantaneous thermal buoyancy and the amount of dust are large, but the area ratio of the bucket-type dust collection hood between the top of the coke holding car and the top of the coke quenching car is very different, and the suction of the ground dust removal fan is mainly allocated to the coke quenching The bucket-type dust collection hood covered on the top of the carriage, and there is a gap between the coke-guiding grid-covered bucket-type dust collection hood and the small burner, so part of the smoke and dust escape from the small burner. In order to improve its dust removal effect, some coking enterprises adopt the method of opening holes on the side plate of the bucket-type dust collection cover near the furnace body on the top of the coke guide grid and attaching a vehicle-mounted fan to assist dust collection. The high-speed operation time parameter is used to pre-increase the suction force of the red coke in the initial grid entry stage; but the results are not satisfactory, and the power consumption is also increased.

Contents of the invention

The purpose of the present invention is to provide a coke oven coke side small burner dedusting device capable of recovering smoke and dust at the coke side small burner of a chamber type coke oven with high efficiency and low cost.

The solution of the present invention is this:

A dust removal device for a small furnace head on the coke side of a coke oven. A furnace top dust collection fan is arranged above the furnace top baseline, and the furnace top dust collection fan is connected with a small furnace head dust removal dry pipe; the small furnace head dust removal dry pipe Horizontally erected under the coal-fueling flue gas conversion valve, and vertical coal car motorcycle track supports are respectively erected at the two ends of each two adjacent small burners, so that the coal-filling flue gas switching valve is located on the adjacent coal car motorcycle track. For the structure between the brackets, every two adjacent small burners share a bucket-type dust collection hood, and each bucket-type dust collection hood is connected to the dust removal dry pipe of the small burner with a branch pipe and a flap valve.

A more specific technical solution also includes: the flap valve is connected with the opening and closing linkage mechanism, opened by the opening and closing linkage mechanism, and closed by falling by its own weight.

Further: the opening and closing link mechanism includes a push rod and a push rod oil cylinder, the push rod is connected to the flap valve shaft head hinged on the wrench to form a swing rod mechanism, and the flap valve shaft heads are respectively connected to the corresponding flap valve connection.

Further: the moving direction of the push rod of the opening and closing linkage mechanism is parallel to the traveling direction of the coke-stopping vehicle.

Further: the bucket-over-bucket dust-collecting hood is installed just above the outside of the small furnace head on the coke side, and is connected with the coke oven column to form a structure in which the bucket-over-bucket dust-collecting hood is supported by the column.

The advantages of the present invention are:

1. Not only can it be installed and put into use on coke ovens that have been built and put into use, but it is also suitable for simultaneous implementation in new projects.

2. Efficiently solve the problem that the existing ground station or coke-stopping vehicle-mounted coke discharge dust removal device cannot eliminate the smoke and dust escape from the small burner of the chamber-type coke oven.

3. In addition to the dust collector of the existing coke discharge dust removal ground station, the subsequent purification of the small burner dust collected by this device can also use the CDQ environmental dust removal station or the coal feeding ground dust removal station equipped with a flame arrester. No need Self-equipped dust collector, thus saving investment.

4. The dust collection fan of this device is installed on the top platform of the coke oven, which has a longer service life than the fan installed on the vehicle of the coke hauler, less faults, lower maintenance costs, and more convenient maintenance and construction.

Description of drawings

Fig. 1 is a schematic diagram of the coke-side small burner discharge coke dust collection device and its layout of the present invention.

Fig. 2 is a schematic diagram of the working state of the linkage mechanism when pushing the single-number coke in the carbonization chamber.

The reference signs in the figure are: 1, furnace top dust collection fan, 2, fan outlet, 3, small burner head dust removal dry pipe, 4, coal adding flue gas conversion valve, 5, coal adding car motorcycle bracket, 6, Flap flap valve, 7, branch pipe, 8, bucket type dust collecting hood, 9, furnace column, 10, furnace top baseline, 11, push rod oil cylinder, 12, push rod, 13, first linkage mechanism, 14, second One flap valve axle head, 15, the second linkage mechanism, 16, the third linkage mechanism, 17 the second flap valve axle nose, 18, the fourth linkage mechanism, 19, the fifth linkage mechanism, 20, The third flap valve shaft head, 21, the sixth linkage.

detailed description

As shown in Figure 1, a furnace top dust collection fan 1 is arranged above the furnace top baseline 10, and the furnace top dust collection fan 1 is installed on the coke side edge of the coke oven platform; The head dust removal dry pipe 3 is connected; the small burner head dust removal dry pipe 3 is horizontally erected under the coal fuel gas conversion valve 4, and the two ends of each two adjacent small burner heads are respectively erected vertically. , forming the structure in which the coaling flue gas switching valve 4 is located between the adjacent coal car motorcycle brackets 5, and every two adjacent small burners share a bucket-over-type dust collection cover 8, and each bucket-over-type collector The dust cover 8 communicates with the small burner head dedusting dry pipe 3 with the branch pipe 7 and the flap valve 6 respectively.

The flap valve 6 is connected with the opening and closing link mechanism, is driven to open by the opening and closing link mechanism, and is closed by falling by its own weight.

The opening and closing link mechanism includes a push rod 12 and a push rod oil cylinder 11, and the push rod 12 is connected with the flap valve shaft head hinged on the wrench 13 to form a swing rod mechanism. The corresponding flap valve 6 is connected; the moving direction of the push rod 12 of the opening and closing linkage mechanism is parallel to the traveling direction of the coke-stopping vehicle.

The bucket-over-bucket dust collection hood 8 is installed directly above the outside of the small burner head on the coke side, and is connected with the coke oven column 9 to form a structure in which the column 9 supports the bucket-overside dust collection cover 8 .

Take the chamber-type coke oven equipped with JL-6-1 coke hauler and discharge coke according to the 5-2 serial sequence as an example. Link mechanism, as shown in Figure 2, by the first link mechanism 13, the second link mechanism 15, the 3rd link mechanism 16, the 4th link mechanism 18, the 5th link mechanism 19, the 6th link mechanism The mechanism 21 is divided into two groups. Because it is the same connecting rod and the same structure, when the push rod advances, the odd number works, and the double number does not work, then it is idling, and vice versa. When the single-chamber coke is delivered, the push rod cylinder 1 on the roof of the coke blocking car is stretched out, and the push rod 2 pushes the first link mechanism 13, the second link mechanism 15, the third link mechanism 16, and the fourth link mechanism 18 , the fifth link mechanism 19, and the sixth link mechanism 21 rotate counterclockwise along their respective supports, and the first link mechanism 13, the third link mechanism 16, and the fifth link mechanism 19 in the working state are pulled correspondingly Turning plate axle head 14,17,20 makes it open, and the second link mechanism 15, the 4th link mechanism 18, the 6th link mechanism 21 connecting rods of non-working state are idling; The lever returns clockwise, and the corresponding flap valve 6 is closed by its own weight. Similarly, when the double-chamber coke is released, the second link mechanism 15, the fourth link mechanism 18, and the sixth link mechanism 21 open the corresponding flap valve 6, and the first link mechanism 13 and the third link mechanism 16. The fifth linkage mechanism 19. The connecting rod is idling; when the push rod cylinder 1 is retracted, the connecting rod returns clockwise, and the corresponding flap valve 6 is closed by its own weight.

Claims (5)

1. A dust removal device for a small furnace head on the coke side of a coke oven, characterized in that: a furnace top dust collection fan (1) is arranged above the furnace top baseline (10), and the furnace top dust collection fan (1) is connected to the small furnace top The furnace head dust removal dry pipe (3) is connected; the small furnace head dust removal dry pipe (3) is horizontally erected under the coal fuel flue gas conversion valve (4), and the two ends of each two adjacent small furnace heads are erected vertically The coal car motor track bracket (5) constitutes the structure in which the coal adding flue gas conversion valve (4) is located between the adjacent coal car motorcycle track brackets (5), and every two adjacent small burners share a cover Bucket-type dust collection hood (8), each covered bucket-type dust collection hood (8) communicates with the small burner head dust removal dry pipe (3) with branch pipe (7) and flap valve (6) respectively. 2. The dedusting device for the coke side small burner head of the coke oven according to claim 1, characterized in that: the flap valve (6) is connected with the opening and closing linkage mechanism, driven to open by the opening and closing linkage mechanism, and is opened by its own weight. Drop off. 3. The dedusting device for the coke side small burner head of the coke oven according to claim 2, characterized in that: the opening and closing linkage mechanism includes a push rod (12) and a push rod cylinder (11), and the push rod ( 12) It is connected with the pivot head of the flap valve hinged to the hook (13) to form a swing lever mechanism, and the shaft heads of the flap valve are respectively connected with the corresponding flap valves (6). 4. The dedusting device for the coke side small burner head of the coke oven according to claim 3, characterized in that: the moving direction of the push rod (12) of the opening and closing linkage mechanism is parallel to the traveling direction of the coke pick-up car. 5. The dedusting device for the coke side small burner head of the coke oven according to claim 1, characterized in that: the bucket-type dust collecting cover (8) is installed directly above the outer side of the coke side small burner head, and coke oven oven The column (9) is connected to form a structure in which the furnace column (9) supports the bucket-type dust collecting hood (8).