Coking flue gas denitration device

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a coking flue gas denitration device, and aims to solve the technical problems that in the prior art, flue gas is sprayed from the upper part to the lower part, the flue gas and an absorbent are not completely reacted and then are exhausted, and the denitration effect is poor. A long hole is formed in the partition plate on one side of the gap, a plurality of spray heads are evenly distributed on the surfaces of the partition plates on the upper side and the lower side of the long hole, each long hole is communicated with a liquid inlet pipe through a corresponding branch pipe, the top wall of the treatment chamber is communicated with an exhaust pipe, waste gas is injected through the lower portion of the treatment chamber, and the flue gas advancing path is prolonged through the partition plates arranged in a staggered mode. A plurality of nozzles are arranged at the upper part and the lower part of the partition plate for spraying to form a plurality of dead-angle-free liquid curtains, flue gas fully reacts with an absorbent through the plurality of liquid curtains, and the absorbent covers the upper surface of the partition plate and downwards flows, so that the contact area between the absorbent and the flue gas is increased, and the denitration effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flue gas treatment technical field, and the specific field is a coking flue gas denitration device. BACKGROUND

[0002] With the improvement of environmental protection consciousness and the increasingly strict environmental protection regulations, the emission limit of nitrogen oxides in the flue gas of various countries is continuously reduced. For example, a series of relevant standards and policies are introduced in China, and coking enterprises must carry out denitration treatment on the flue gas to meet the increasingly strict environmental protection emission standards. This forces coking enterprises to seek effective denitration technology and devices to control flue gas pollution.

[0003] The prior art uses alkaline solution (such as sodium hydroxide, sodium carbonate, etc.) as an absorbent, and atomizes the alkaline solution into fine droplets through a spraying device, and fully contacts with the flue gas containing NOx. Some components (such as NO2) in NOx can react with the alkaline solution and be absorbed to carry out denitration.

[0004] However, when the prior art carries out spraying denitration, it is simply sprayed from the upper part to the lower part, and the flue gas is discharged without complete reaction with the absorbent, and the denitration effect is poor. TECHNICAL CONTENT

[0005] The utility model discloses in order to solve the prior art only simple through the upper part to the lower part spray, flue gas and absorbent reaction is not thorough and is discharged, and the technical problem that denitration effect is poor, and further provides a coking flue gas denitration device.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coking flue gas denitration device, comprising: a treatment chamber, the inner wall of the treatment chamber is connected with a plurality of partitions with a gap, the gap between the adjacent partitions and the inner wall of the treatment chamber is oppositely arranged, the flue gas path is vertically wavy, the partition on one side of the gap is provided with a long hole, the surface of the partition on the upper and lower sides of the long hole is uniformly provided with a plurality of spray heads, each long hole is connected with a liquid inlet pipe through a corresponding branch pipe, the top wall of the treatment chamber is connected with an exhaust pipe, and the exhaust gas is injected from the lower part of the treatment chamber.

[0007] Preferably, the shape of the partition is isosceles trapezoidal, and the isosceles trapezoidal is horizontally arranged.

[0008] Preferably, the lower part of the lowermost partition in the partition is provided with a drainage plate, the upper end of the drainage plate is located at the gap between the lowermost partition and the inner wall of the treatment chamber, the drainage plate is connected to the inner wall of the treatment chamber, a liquid hole is formed in the side wall of the drainage plate at the lower end of the drainage plate, and the liquid hole is connected with a liquid collecting tank.

[0009] Preferably, a liquid level sensor is arranged in the liquid collecting tank, a liquid discharge pipe is connected with the liquid collecting tank, a liquid pump is arranged in the middle of the liquid discharge pipe, the liquid level sensor can send a signal to a controller, and the liquid level sensor can control the opening and closing of the liquid pump.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] Through the staggered partition plate, the smoke gas path is prolonged, multiple spray heads are arranged on the upper and lower parts of the partition plate to form multiple liquid curtains with no dead angle, the smoke gas is fully reacted with the absorbent through the multiple liquid curtains, the absorbent on the upper surface of the partition plate flows downward, the contact area of the absorbent and the smoke gas is increased, and the denitration effect is greatly improved.

[0012] Due to the isosceles trapezoidal shape of the partition plate, the absorbent on the upper surface is guided to the inclined lower surface of the partition plate, the contact area with the smoke gas is further increased, and the denitration effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model;

[0014] Fig. 2 It is a structural sectional view of the utility model.

[0015] In the figure: treatment chamber 1; partition plate 2; long hole 3; spray head 4; branch pipe 5; liquid inlet pipe 6; exhaust pipe 7; drainage plate 8; liquid hole 9; liquid collecting tank 10; liquid level sensor 11; liquid outlet pipe 12; liquid pump 13. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] The rotary connection in the device refers to the axial fixation of the bearing by clamping the bearing on the shaft, the spring retainer groove is arranged on the shaft or the shaft hole, the axial fixation of the bearing is realized by clamping the elastic retainer in the retainer groove, and rotation is realized; the articulated refers to the movable connection mode of the connecting parts such as hinges, pins and short shafts.

[0018] The utility model will be described in detail below with reference to the drawings.

[0019] The utility model will be described in detail below with reference to the drawings. Figs. 1-2The embodiment discloses a coking flue gas denitration device which comprises a treatment chamber 1, a plurality of partitions 2 are connected to the inner wall of the treatment chamber 1 and leave gaps, the gaps between the adjacent partitions 2 and the inner wall of the treatment chamber 1 are oppositely arranged, the flue gas running path is vertically wavy, a long hole 3 is arranged in the partition 2 on one side of the gap, a plurality of spray heads 4 are uniformly distributed on the surfaces of the partitions 2 on the upper and lower sides of the long hole 3, each long hole 3 is connected with a liquid inlet pipe 6 through a corresponding branch pipe 5, an exhaust pipe 7 is connected to the top wall of the treatment chamber 1, and waste gas is injected from the lower part of the treatment chamber 1.

[0020] The flue gas runs from bottom to top, the running path of the flue gas is lengthened through the staggered partitions 2, the absorbent is injected from the liquid inlet pipe 6 and sprayed out through the branch pipe 5, the long hole 3 and the spray head 4, a plurality of spray heads 4 form a plurality of liquid curtains without dead angles, the flue gas fully reacts with the absorbent through the plurality of liquid curtains, the denitration effect is improved, the absorbent on the upper surfaces of the partitions flows downward, the contact area between the absorbent and the flue gas is increased, and the denitration effect is greatly improved.

[0021] The shape of the partition 2 is isosceles trapezoidal, and the isosceles trapezoidal is horizontally arranged.

[0022] Since the shape of the partition 2 is isosceles trapezoidal, the absorbent on the upper surface is guided to the inclined lower surface of the partition 2, the contact area with the flue gas is further increased, and the denitration effect is improved.

[0023] The lower part of the lowermost partition 2 is provided with a guide plate 8, the upper end of the guide plate 8 is located at the gap between the lowermost partition 2 and the inner wall of the treatment chamber 1, the guide plate 8 is connected to the inner wall of the treatment chamber 1, a liquid hole 9 is formed in the side wall of the guide plate 8 at the lower end of the guide plate 8, and the liquid hole 9 is connected with a liquid collecting tank 10.

[0024] The reacted liquid of the lowermost partition 2 is guided into the liquid collecting tank 10 through the guide plate 8, is collected, and corrosion of the inner wall of the treatment chamber 1 by waste water is avoided.

[0025] The liquid collecting tank 10 is provided with a liquid level sensor 11, the liquid collecting tank 10 is connected with a liquid discharge pipe 12, a liquid pump 13 is arranged in the middle of the liquid discharge pipe 12, the liquid level sensor 11 can send a signal to a controller, and the liquid level sensor 11 can control the opening and closing of the liquid pump 13.

[0026] When the liquid level of the waste water reaches the liquid level sensor 11, the liquid level sensor 11 sends a liquid level signal to the controller, the controller controls the liquid pump 13 to be opened for a specified time and then to be closed, after the waste water is discharged through the liquid discharge pipe 12, the liquid collecting tank 10 is resealed, and the liquid collecting continues.

[0027] In the description of the application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0028] The standard parts used in the application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art. The machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0029] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A coking plant flue gas denitration device characterized by comprising: The utility model relates to a flue gas treatment device, including: Processing chamber (1), the clearance of the inner wall of processing chamber (1) is left and is connected with multiple partitions (2), the clearance of adjacent partition (2) and the inner wall of processing chamber (1) is oppositely arranged, and the flue gas travel path is vertically wavy, the partition (2) of one side of clearance is equipped with long hole (3), the surface of the partition (2) of the upper and lower sides of long hole (3) is evenly distributed with multiple spray heads (4), and each long hole (3) is connected with liquid inlet pipe (6) through corresponding branch pipe (5), and the top wall of processing chamber (1) is communicated with exhaust pipe (7), and waste gas is injected through the lower part of processing chamber (1).

2. The device for denitration of coke oven flue gas according to claim 1, characterized in that: The shape of the partition (2) is isosceles trapezoidal, and the horizontal setting of the isosceles trapezoidal is high.

3. The device for flue gas denitration of a coke oven according to claim 1, characterized in that: The lower part of the lowermost partition (2) in the partition (2) is provided with a drainage plate (8), the upper end of the drainage plate (8) is located at the clearance between the lowermost partition (2) and the inner wall of the processing chamber (1), the drainage plate (8) is connected to the inner wall of the processing chamber (1), and the side wall of the drainage plate (8) at the lower end of the drainage plate (8) is provided with a liquid hole (9), and the liquid hole (9) is communicated with a liquid collecting tank (10).

4. The device for flue gas desulfurization according to claim 3, characterized in that: The liquid collecting tank (10) is provided with a liquid level sensor (11), and the liquid collecting tank (10) is communicated with a liquid discharge pipe (12), and the liquid pump (13) is arranged in the middle of the liquid discharge pipe (12). The liquid level sensor (11) can send signals to the controller, and the liquid level sensor (11) can control the opening and closing of the liquid pump (13).

Images