Anti-blocking desorption gas extraction structure for active coke desulfurization and denitrification desorption tower

Abstract

The utility model provides an anti-blocking desorption gas extraction structure for an active coke desulfurization and denitrification desorption tower. The desorbed gas extraction structure is arranged at a gas extraction section of the desorption tower and comprises a plurality of coke blocking steel pipes arranged at the top of an inner cavity of the gas extraction section and a gas extraction chamber arranged outside the gas extraction section, and the coke blocking steel pipes are densely distributed below a coke box tube plate of the gas extraction section; the upper part of the air exhaust section is communicated with the air exhaust chamber through a smoke outlet hole, the bottom of the air exhaust chamber is communicated with the air exhaust section through a coke return hole, the smoke outlet hole is formed in a position higher than the bottom end of the coke blocking steel pipe, a smoke partition plate is arranged in the air exhaust chamber, and the smoke partition plate is arranged at the upper part of the air exhaust chamber and extends to a position below the smoke outlet hole; and an air exhaust pipe communicated with an external air exhaust device is arranged at the upper part of the air exhaust chamber. According to the utility model, the amount of active coke ash sucked into the gas suction pipeline can be greatly reduced, the blockage of the desorption gas suction pipeline of the desorption tower is prevented, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of activated coke desulfurization and denitration environmental protection, and particularly relates to an anti-clogging analytical gas extraction structure for an activated coke desulfurization and denitration analytical tower. Background Art

[0002] The existing negative pressure control method for the desorption tower is to directly connect a DN200 exhaust pipe to the middle of the desorption tower. After the desorption gas is extracted, it is collected outside the tower and then collected into a DN250 exhaust pipe, which is then extracted by the desorption fan. Two negative pressure monitoring points are set up at the top and bottom of the desorption tower to control the negative pressure of the tower.

[0003] The negative pressure control and tower direct connection method has the following disadvantages in the process of extracting the analytical gas: since an exhaust pipe is used in the middle of the analytical tower to directly enter the analytical tower for exhaust, during the exhaust process, the active particles and coke ash in the analytical tower can be easily sucked into the exhaust pipe. A large amount of active particles and coke ash entering the exhaust pipe can easily cause the pipe to be blocked, resulting in the inability to transport the analytical gas normally. Summary of the Invention

[0004] In order to solve the problem that activated coke and coke ash in the exhaust section of a traditional decomposition tower are easily sucked into the external exhaust pipe, causing blockage of the exhaust pipe, the utility model provides an anti-clogging decomposition gas extraction structure for an activated coke desulfurization and denitrification decomposition tower. The structure is located in the exhaust section of the decomposition tower, and can effectively block and separate the activated coke, preventing the exhaust pipe of the decomposition tower from being blocked due to the entry of activated particles and coke ash.

[0005] In order to achieve the above-mentioned technical objectives, the utility model provides an anti-clogging analytical gas extraction structure for an activated coke desulfurization and denitrification analytical tower, wherein the analytical gas extraction structure is arranged in the exhaust section of the analytical tower, including a plurality of coke-blocking steel pipes arranged at the top of the inner cavity of the exhaust section and an exhaust chamber arranged outside the exhaust section, and the plurality of coke-blocking steel pipes are densely distributed under the coke box tube plate of the exhaust section; the upper part of the exhaust section is connected to the exhaust chamber through a smoke outlet, and the bottom of the exhaust chamber is connected to the exhaust section through a coke return hole, the smoke outlet is arranged at a position higher than the bottom end of the coke-blocking steel pipe, and a flue gas baffle is provided in the exhaust chamber, and the flue gas baffle is arranged at the upper part of the exhaust chamber and extends to a position below the smoke outlet; the upper part of the exhaust chamber is provided with an exhaust pipe connected to an external exhaust device.

[0006] The better technical solution of the present utility model is as follows: the exhaust chamber is an annular cavity surrounding the outside of the exhaust section of the analysis tower or an arc-shaped cavity symmetrically arranged on both sides of the exhaust section, the smoke outlet holes and the focus return holes are both rectangular holes, the smoke outlet holes are equidistantly distributed in an annular shape on the upper part of the exhaust section, and the focus return holes are equidistantly distributed in an annular shape on the lower part of the exhaust section, and the smoke baffle is an annular baffle vertically arranged on the upper part of the exhaust chamber, and blocks the upper smoke outlet holes.

[0007] The better technical solution of the utility model is: the coke-blocking steel pipe is a stainless steel seamless steel pipe, and multiple coke-blocking steel pipes are evenly arranged under the coke box tube plate, and there is active coke running from top to bottom in the coke-blocking steel pipe.

[0008] A better technical solution of the present invention is that the bottom of the air pumping chamber is an inclined bottom surface, and the focus return hole is arranged in the inclined area of ​​the air pumping chamber.

[0009] A better technical solution of the present utility model is that the diameter of the focus return hole is larger than the smoke outlet hole.

[0010] During the air extraction process, the utility model blocks the active particles and coke ash in the analysis tower by the steel pipe at the upper part of the air extraction section and then falls into the air extraction section. Even if some of them enter the air extraction chamber, they will fall to the lower part of the air extraction chamber due to gravity and then return to the bottom of the air extraction section through the coke return hole at the lower part of the air extraction chamber, thereby preventing the active particles and coke ash from being extracted into the air extraction pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The steel pipe in the exhaust chamber of the utility model can block the activated coke from being extracted out of the analysis tower. At the same time, a sandwich exhaust chamber is provided outside the exhaust section of the analysis tower. The extracted gas first enters the exhaust chamber, and the gas enters the exhaust chamber after being blocked by the steel pipe. Even if the material enters the exhaust chamber, it will be scattered in the exhaust chamber, thereby greatly reducing the amount of activated coke ash extracted into the exhaust gas pipeline, preventing the exhaust gas pipeline of the analysis tower from being blocked, and extending the service life; the active particles and coke ash entering the exhaust chamber will return to the analysis tower, avoiding accumulation in the exhaust chamber and affecting normal exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a front schematic diagram of the connecting wall between the vacuum chamber and the analytical tower of the utility model.

[0015] In the figure: 1-exhaust section, 2-coke-blocking steel pipe, 3-coke box tube plate, 4-flue gas partition, 5-exhaust pipe, 6-smoke outlet, 7-coke return hole, 8-exhaust chamber. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 2The accompanying drawings are simplified examples and are intended solely to clearly and concisely illustrate the embodiments of the present invention. The technical solutions presented in the accompanying drawings are specific examples of the present invention and are not intended to limit the scope of the claimed invention. All other examples derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0017] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0018] The embodiment provides an anti-clogging analytical gas extraction structure for an activated coke desulfurization and denitrification analytical tower, such as Figure 1 and Figure 2 As shown, the desorption gas extraction structure is arranged in the extraction section 1 of the desorption tower, and includes multiple coke-blocking steel pipes 2 arranged at the top of the inner cavity of the extraction section 1 and an extraction chamber 8 arranged outside the extraction section 1. The extraction chamber 8 is an annular cavity surrounding the outside of the extraction section 1 of the desorption tower or an arc-shaped cavity symmetrically arranged on both sides of the extraction section 1. The bottom of the extraction chamber 8 is an inclined bottom surface. The coke-blocking steel pipes 2 are stainless steel seamless steel pipes. Multiple coke-blocking steel pipes 2 are evenly arranged below the coke box tube plate 3. Active coke flows from top to bottom in the coke-blocking steel pipes 2. The upper part of the extraction section 1 is connected to the extraction chamber 8 through the smoke outlet 6. The bottom of the extraction chamber 8 is connected to the extraction section 1 through the coke return hole 7. The coke return hole 7 is arranged in the inclined area of ​​the extraction chamber 8. The smoke outlet 6 is arranged at a position higher than the bottom end of the coke-blocking steel pipe 2. Both the smoke outlet 6 and the coke-returning hole 7 are rectangular holes. The smoke outlet 6 is evenly distributed in a circular pattern at the upper portion of the exhaust section 1, while the coke-returning hole 7 is evenly distributed in a circular pattern at the lower portion of the exhaust section 1. The diameter of the coke-returning hole 7 is larger than that of the smoke outlet 6. A smoke baffle 4 is provided within the exhaust chamber 8. The smoke baffle 4 is an annular baffle vertically arranged at the upper portion of the exhaust chamber 8. The smoke baffle 4 is arranged at the upper portion of the exhaust chamber 8 and extends to a position below the smoke outlet 6, thereby blocking the upper smoke outlet 6. An exhaust pipe 5 connected to an external exhaust device is provided at the upper portion of the exhaust chamber 8.

[0019] The working process of the present invention is to connect the exhaust pipe 5 with an external exhaust device, i.e., an exhaust pump or exhaust fan, etc., and exhaust the air through the exhaust device. During the exhaust process, the flue gas enters the exhaust chamber 8 from the bottom up through the smoke outlet 6. The activated carbon particles or coke ash contained in the flue gas fall back to the bottom of the exhaust section under the action of the coke retaining steel pipe 2. After the exhausted gas enters the exhaust chamber 1, the coke ash drawn into the exhaust chamber 1 will fall back to the bottom of the exhaust chamber 1 under the action of the flue gas baffle 4, and then return to the bottom of the exhaust section 1 through the coke return hole 7. The present invention greatly reduces the amount of activated coke ash drawn into the exhaust gas pipeline, prevents blockage of the exhaust pipeline of the decomposition tower, and extends the service life.

[0020] The above is merely one embodiment of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An anti-clogging analytical gas extraction structure for an activated coke desulfurization and denitrification analytical tower, characterized by: The decomposition gas extraction structure is arranged in the exhaust section (1) of the decomposition tower, and comprises a plurality of coke-blocking steel pipes (2) arranged at the top of the inner cavity of the exhaust section (1) and an exhaust chamber (8) arranged outside the exhaust section (1). The plurality of coke-blocking steel pipes (2) are densely distributed below the coke box tube plate (3) of the exhaust section; the upper part of the exhaust section (1) is connected to the exhaust chamber (8) through a smoke outlet (6), and the bottom of the exhaust chamber (8) is connected to the exhaust section (1) through a coke return hole (7); the smoke outlet (6) is arranged at a position higher than the bottom end of the coke-blocking steel pipe (2); a smoke baffle (4) is provided in the exhaust chamber (8), and the smoke baffle (4) is arranged at the upper part of the exhaust chamber (8) and extends to a position below the smoke outlet (6); the upper part of the exhaust chamber (8) is provided with an exhaust pipe (5) connected to an external exhaust device.

2. The anti-clogging desorption gas extraction structure for an activated coke desulfurization and denitrification desorption tower according to claim 1, characterized in that: The exhaust chamber (8) is an annular cavity surrounding the outside of the exhaust section (1) of the analytical tower or an arc-shaped cavity symmetrically arranged on both sides of the exhaust section (1); the smoke outlet holes (6) and the focus return holes (7) are both rectangular holes; the smoke outlet holes (6) are equidistantly distributed in an annular manner on the upper part of the exhaust section (1); the focus return holes (7) are equidistantly distributed in an annular manner on the lower part of the exhaust section (1); the smoke baffle (4) is an annular baffle vertically arranged on the upper part of the exhaust chamber (8) and blocks the upper smoke outlet holes (6).

3. The anti-clogging desorption gas extraction structure for an activated coke desulfurization and denitrification desorption tower according to claim 1 or 2, characterized in that: The coke-blocking steel pipe (2) is a stainless steel seamless steel pipe, and a plurality of coke-blocking steel pipes (2) are evenly distributed below the coke box tube plate (3).

4. The anti-clogging desorption gas extraction structure for an activated coke desulfurization and denitrification desorption tower according to claim 1 or 2, characterized in that: The bottom of the air extraction chamber (8) is an inclined bottom surface, and the focus return hole (7) is arranged in the inclined area of ​​the air extraction chamber (8).

5. The anti-clogging desorption gas extraction structure for an activated coke desulfurization and denitrification desorption tower according to claim 1 or 2, characterized in that: The diameter of the focus return hole (7) is larger than the smoke outlet hole (6).

Images