CN218795064U - A gasification furnace waste gas denitrification device - Google Patents

Abstract

The utility model relates to the technical field of exhaust gas denitrification, in particular to a gasifier exhaust gas denitrification device, which includes a box body, and an air intake assembly is plugged into one side of the outer wall of the box body, and the air intake assembly includes a shunt shell, plugged in The air inlet pipe on the outer wall of one side of the splitter shell, the splitter plate fixed on the inner wall at both ends of the splitter shell, and the partition plate equidistantly distributed on the outer wall of one side of the splitter plate. In the utility model, through the air intake assembly provided, when the gas enters the splitter shell through the intake pipe, the gas passes through the interference of the splitter plate, and the gas enters the air channel formed by a plurality of partitions through the vent hole to be dispersed and discharged, increasing the waste gas and air flow. The contact surface of the water curtain is conducive to the full reaction of the exhaust gas and the solution; the solution is sprayed from the bottom to the top through the inclined nozzle, so that the solution first forms an upward water curtain. When the solution reaches the oblique upper part and starts to fall, Another water curtain is formed, which further increases the time for the solution to react with the exhaust gas, making the reaction more complete.

Description

A gasification furnace waste gas denitrification device

technical field

The utility model relates to the technical field of waste gas denitrification, in particular to a gasifier waste gas denitrification device.

Background technique

Gasifiers are prone to produce nitrogen oxides during the working process. For the human body, nitrogen oxides can irritate the lungs, making it difficult for people to resist respiratory diseases such as colds; for the environment, nitrogen oxides and air The combination of water in the water will eventually be converted into nitric acid and nitrate. Nitric acid is one of the causes of acid rain. It can produce photochemical smog pollution with other pollutants under certain conditions. In order to prevent excessive NOx from polluting the environment during the working process of the gasifier, denitrification treatment should be carried out.

At present, the existing waste gas denitrification equipment can remove sulfur and nitrate in the waste gas through wet technology, using sodium hydroxide solution as the spray liquid, but the disadvantages are:

Due to the fast downward spraying speed of the solution and the formation of a single water curtain, and the slow fusion between the liquid and the gas, the desulfurization efficiency is low, which cannot meet the desulfurization requirements and needs further improvement.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a gasification furnace waste gas denitrification device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A gasification furnace exhaust gas denitrification device, comprising a box body, an air intake assembly inserted into one side of the outer wall of the box, and the air intake assembly includes a splitter shell, an intake pipe plugged into one side of the outer wall of the splitter shell, and fixed on the Divider plates on the inner wall at both ends of the splitter shell and partitions equidistantly distributed on the outer wall of one side of the splitter plate;

The inner walls on both sides of the box are fixed with trapezoidal blocks, and the other inner wall of the box is plugged with a spray assembly;

The spray assembly includes a U-shaped tube, a fixed tube plugged into one side of the U-shaped tube, a connecting tube equidistantly plugged into the inner walls of both sides of the U-shaped tube, and nozzles distributed equidistantly on the outer wall of the connecting tube. The top of the outer wall on the other side of the body is plugged with an outlet pipe.

Preferably, one side of the outer wall of the splitter plate is provided with vent holes equidistantly distributed along the length direction, and the equidistantly distributed vent holes are symmetrically distributed up and down.

Preferably, a water tank is placed at the bottom of the box, and a drainage pipe is plugged and fixed on one side of the outer wall of the water tank, and the drainage pipe is connected to a recovery pool through a pipeline.

Preferably, a grill is placed on the top of the two trapezoidal blocks, and the bottom of the spray assembly is in contact with the top of the grill.

Preferably, both ends of the U-shaped pipe are sealed, and the nozzles are distributed on the outer wall of the connecting pipe at an oblique angle.

Preferably, a gasification furnace is provided on one side of the air intake assembly, and the gasification furnace and the air intake assembly are connected to each other through an air extractor and a pipeline, and a liquid storage tank is provided on one side of the spray assembly, and the liquid storage tank is connected to the air intake assembly. The spray assembly communicates with the pipeline through the water pump.

The beneficial effects of the utility model are:

1. Through the air intake assembly, when the gas enters the splitter shell through the intake pipe, after the interference of the splitter plate, the gas enters the air duct formed by multiple partitions through the vent hole to be dispersed and discharged, increasing the waste gas and water flow. The contact surface of the screen is conducive to the full reaction of the exhaust gas and the solution;

2. The solution is sprayed from the bottom to the top through the inclined nozzle, so that the solution first forms an upward water curtain. When the solution reaches the oblique upper part and starts to fall, another water curtain is formed, which further increases the interaction between the solution and the exhaust gas. The reaction time makes the reaction more fully.

Description of drawings

Fig. 1 is a schematic front sectional view of the overall structure of a gasification furnace exhaust gas denitrification device proposed by the utility model;

Fig. 2 is a schematic structural diagram of an intake assembly of a gasification furnace exhaust gas denitrification device proposed by the utility model;

Fig. 3 is a schematic structural diagram of a spray assembly of a gasification furnace exhaust gas denitrification device proposed by the utility model;

Fig. 4 is a schematic diagram of the connection structure between the gasification furnace exhaust gas denitrification device proposed by the utility model and the gasification furnace.

In the figure: 1. Box body; 2. Air intake assembly; 3. Splitter shell; 4. Intake pipe; 5. Splitter plate; 6. Partition plate; 7. Water tank; Spray assembly; 11. U-shaped pipe; 12. Fixed pipe; 13. Connecting pipe; 14. Nozzle; 15. Outlet pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Example:

Referring to Figures 1 and 2, a gasification furnace exhaust gas denitrification device includes a box body 1, and an air intake assembly 2 is plugged into one side of the outer wall of the box body 1. The air inlet pipe 4 on one side of the outer wall, the splitter plate 5 fixed on the inner wall at both ends of the splitter shell 3, and the partition plate 6 equidistantly distributed on the outer wall of the side of the splitter plate 5, the outer wall of one side of the splitter plate 5 is provided with equidistant distances along the length direction. Distributed air holes, equidistant air holes are distributed symmetrically up and down, the gas enters the splitter shell 3 through the intake pipe 4, and after the interference of the splitter plate 5, the exhaust gas is dispersed and discharged through the air duct formed by a plurality of partitions 6, increasing The contact surface between the large waste gas and the water curtain;

Referring to Fig. 1, a water tank 7 is placed at the bottom of the box body 1, and a drainpipe is plugged and fixed on one side of the water tank 7, and the drainpipe is connected to a recovery pool through a pipeline, and the sprayed solution is collected by the water tank 7, and then Discharge the reacted solution into the recovery pool through the drain pipe to wait for treatment;

The inner walls of both sides of the box body 1 are fixed with trapezoidal blocks 8, and the tops of the two trapezoidal blocks 8 are placed with grilles 9, and the bottom of the spray assembly 10 is attached to the top of the grilles 9, and the trapezoidal blocks 8 are used for spraying. The final solution is drained, and the grille 9 places and supports the spray assembly 10;

Referring to Figures 1 and 3, a spray assembly 10 is inserted into the inner wall of the other side of the box body 1, and the spray assembly 10 includes a U-shaped pipe 11, a fixed pipe 12 inserted into the outer wall of one side of the U-shaped pipe 11, and equidistantly inserted The connecting pipe 13 connected to the inner wall on both sides of the U-shaped pipe 11 and the nozzle 14 equidistantly distributed on the outer wall of the connecting pipe 13, the top of the other side of the outer wall of the box body 1 is plugged with an air outlet pipe 15, and the two ends of the U-shaped pipe 11 All are sealed structures, and the nozzles 14 are distributed on the outer wall of the connecting pipe 13 at an inclined angle, and the solution is sprayed obliquely from the bottom to the top by the inclined nozzles 14, so that the solution forms two water curtains upward and downward, increasing and The time for the exhaust gas to react, cooperate with the water curtain formed by a plurality of connecting pipes 13, to make the reaction more sufficient;

Referring to Fig. 4, a gasifier is provided on one side of the air intake assembly 2, and the gasifier and the air intake assembly 2 communicate with each other through an air extractor and a pipeline, and a liquid storage tank is provided on one side of the spray assembly 10, and the liquid storage tank It communicates with the spray assembly 10 through a water pump and a pipeline.

working principle:

When in use, the gas enters the splitter shell 3 through the intake pipe 4, and after being disturbed by the splitter plate 5, the exhaust gas is dispersed and discharged through the air duct formed by a plurality of partition plates 6, and the exhaust gas discharged from the splitter shell 3 enters the box 1, The solution is sprayed obliquely from the bottom to the top by the inclined nozzle 14, so that the solution forms two water curtains upward and downward, which increases the time for reacting with the exhaust gas, and cooperates with the water curtain formed by a plurality of connecting pipes 13 to make the solution The reaction is more sufficient, the solution sprayed by the trapezoidal block 8 falls on the trapezoidal block 8, and the drainage of the trapezoidal block 8 makes the solution flow into the water tank 7 for collection, and then discharge the reacted solution into the recovery pool through the drain pipe Waiting for treatment, the gas is discharged from the box body 1 through the gas outlet pipe 15 .

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. A waste gas denitration device of a gasification furnace comprises a box body (1) and is characterized in that an air inlet assembly (2) is inserted into the outer wall of one side of the box body (1), and the air inlet assembly (2) comprises a shunting shell (3), an air inlet pipe (4) inserted into the outer wall of one side of the shunting shell (3), shunting plates (5) fixed on the inner walls of the two ends of the shunting shell (3) and partition plates (6) distributed on the outer wall of one side of the shunting plates (5) at equal intervals;

the inner walls of two sides of the box body (1) are both fixed with trapezoidal blocks (8), and the inner wall of the other side of the box body (1) is inserted with a spraying assembly (10);

the spraying assembly (10) comprises a U-shaped pipe (11), a fixed pipe (12) inserted in the outer wall of one side of the U-shaped pipe (11), connecting pipes (13) inserted in the inner walls of the two sides of the U-shaped pipe (11) at equal intervals and spray heads (14) distributed on the outer wall of the connecting pipes (13) at equal intervals, and an air outlet pipe (15) is inserted in the top of the outer wall of the other side of the box body (1).

2. The waste gas denitration device of the gasification furnace according to claim 1, wherein the outer wall of one side of the flow distribution plate (5) is provided with vent holes distributed equidistantly along the length direction, and the vent holes distributed equidistantly are distributed in a vertically symmetrical manner.

3. The gasifier waste gas denitration device according to claim 1, characterized in that a water tank (7) is placed at the bottom inside the box body (1), and a drain pipe is fixedly inserted into the outer wall of one side of the water tank (7), and the drain pipe is connected with a recovery tank through a pipeline.

4. The gasifier flue gas denitration device according to claim 1, wherein a grid (9) is placed on the top of each of the two trapezoidal blocks (8), and the bottom of the spray assembly (10) is attached to the top of the grid (9).

5. The denitration device for the exhaust gas of the gasification furnace according to claim 1, wherein both ends of the U-shaped pipe (11) are sealed structures, and the spray heads (14) are distributed on the outer wall of the connecting pipe (13) in an inclined angle.

6. The waste gas denitration device of the gasification furnace according to claim 1, wherein a gasification furnace is arranged on one side of the air inlet assembly (2), the gasification furnace and the air inlet assembly (2) are communicated with a pipeline through an air pump, a liquid storage tank is arranged on one side of the spray assembly (10), and the liquid storage tank and the spray assembly (10) are communicated with the pipeline through a water pump.

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