A nitrogen oxide demisting device

Abstract

The utility model discloses a nitrogen oxide demisting device, comprising a reactor, a double-bag blade separation unit is fixedly installed on the inner wall of the reactor, a cavity-type pressurized self-flushing unit is fixedly installed above the double-bag blade separation unit, a fiber demisting cleaning unit is installed above the cavity-type pressurized self-flushing unit, two groups of the fiber demisting cleaning units are arranged above and below, an air-blocking one-way rapid liquid-draining unit is fixedly installed between the two groups of the fiber demisting cleaning units, the air-blocking one-way rapid liquid-draining unit comprises a shell, the top of the inner wall of the shell is a demisting section, and relates to the technical field of nitrogen oxide demisting devices, by arranging the air-blocking one-way rapid liquid-draining unit, the airflow direction and the water flow direction are opposite, and at the same time, the airflow reduces the circulation speed of the airflow when entering the air-blocking one-way rapid liquid-draining unit, so that the airflow and the water flow can be fully contacted, thereby improving the demisting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen oxide demisting devices, in particular to a nitrogen oxide demisting device. Background Art

[0002] The nitric oxide gas demisting device usually adopts a cavity-type pressurized self-flushing unit and a gas-blocking one-way rapid liquid discharge unit to be used in combination to flush the escaping nitric oxide gas. The original structure of the existing cavity-type pressurized self-flushing unit usually adopts a spray flushing method on the air inlet side of the nozzle. In this method, the flushing water is in the same direction as the airflow, and the contact time between the flushing water and the blades is too short, resulting in poor cleaning effect, and it is easy to be entrained to the subsequent section with the airflow, causing the load on the subsequent fiber demisting unit to increase. The original structure of the gas-blocking one-way rapid liquid discharge unit, the special-effect fiber demisting unit, is a demisting unit from top to bottom, and does not involve liquid discharge, which is inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to provide a nitrogen oxide demisting device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A nitrogen oxide demisting device comprises a reactor, a double-bag blade separation unit is fixedly installed on the inner wall of the reactor, a cavity-type pressurized self-flushing unit is fixedly installed above the double-bag blade separation unit, a fiber demisting cleaning unit is installed above the cavity-type pressurized self-flushing unit, two groups of fiber demisting cleaning units are arranged above and below, an air-blocking one-way rapid liquid discharge unit is fixedly installed between the two groups of fiber demisting cleaning units, the air-blocking one-way rapid liquid discharge unit comprises a shell, the top end of the inner wall of the shell is a demisting section, a support inner side plate and a support outer side plate are fixedly installed on the bottom end of the shell, and an overflow hole is opened on the outer wall of the bottom end of the support outer side plate.

[0006] In a preferred embodiment of the utility model, a gas input pipe is fixedly installed on the outer wall of the reactor, and the gas input pipe is located below the double-bag blade separation unit. The double-bag blade separation unit includes blades, and a liquid outlet pipe is connected below the blades.

[0007] In a preferred embodiment of the utility model, an inspection port is fixedly installed on the front outer wall of the reactor, an exhaust port is opened on the top outer wall of the reactor, and a drain pipe is fixedly connected to the bottom outer wall of the reactor, and a plurality of drain pipes are provided.

[0008] In a preferred embodiment of the utility model, the fiber demisting and cleaning unit includes a water injection pipe, which is fixedly installed on the inner wall of the reactor, and a nozzle is evenly fixedly installed on the outer wall of the water injection pipe, and the nozzle is used to spray the outer walls of the top and bottom ends of the gas-blocking one-way rapid liquid discharge unit.

[0009] In a preferred embodiment of the present invention, a frame is evenly fixedly installed on the inner wall of the demisting section, and the frame is used to demist the nitrogen oxide gas.

[0010] In a preferred embodiment of the utility model, the chamber-type pressurized self-flushing unit includes a spray pipe, which is fixedly mounted on the inner wall of the reactor, the input end of the spray pipe is fixedly connected to the water inlet pipe via a flange, and the manifold is evenly fixedly mounted on the outer wall of the bottom end of the spray pipe.

[0011] In a preferred embodiment of the utility model, a boost pipe is provided at the bottom of the manifold, the boost pipe is configured to be conical, and the output end of the boost pipe points to the surface of the blades in the double-bag blade separation unit.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0013] 1. By setting up an air-blocking one-way rapid liquid-draining unit, the airflow direction is opposite to the water flow direction. At the same time, the airflow speed is reduced when entering the air-blocking one-way rapid liquid-draining unit, which facilitates full contact between the airflow and the water flow, thereby improving the demisting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a schematic diagram of the main structure of a nitrogen oxide demisting device;

[0016] Figure 2 A nitrogen oxide demisting device Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 It is a mid-chamber pressurized self-flushing unit for a nitrogen oxide demisting device.

[0018] In the figure: reactor 100, gas input end 110, inspection port 120, exhaust port 130, drain pipe 140, water injection pipe 200, shell 300, frame 310, support inner plate 320, support outer plate 330, overflow hole 340, chamber type pressurized self-flushing unit, spray pipe 400, flange 410, manifold 420, boost pipe 430, double bag blade separation unit, blade 500, liquid outlet pipe 510. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] Example 1: Figure 1-3 , including a reactor 100, a double-bag blade separation unit is fixedly installed on the inner wall of the reactor 100, a cavity-type pressurized self-flushing unit is fixedly installed above the double-bag blade separation unit, a fiber demisting cleaning unit is installed above the cavity-type pressurized self-flushing unit, two groups of fiber demisting cleaning units are arranged above and below, an air-blocking one-way rapid liquid discharge unit is fixedly installed between the two groups of fiber demisting cleaning units, the air-blocking one-way rapid liquid discharge unit includes a shell 300, the top of the inner wall of the shell 300 is a demisting section, and a supporting inner side plate 320 and a supporting outer side plate 330 are fixedly installed at the bottom end of the shell 300, and an overflow hole 340 is opened on the outer wall of the bottom end of the supporting outer side plate 330.

[0021] The specific usage scenarios of this embodiment are: by setting up a double-bag blade separation unit, it is used to separate large particle droplets in the nitrogen oxide gas containing mist droplets, by setting up a fiber demisting and cleaning unit, it is used to clean the gas-blocking one-way rapid liquid discharge unit, by setting up a demisting section, it is used to demist the nitrogen oxide gas, and by setting up a gas-blocking one-way rapid liquid discharge unit, it is used to separate the airflow and droplets.

[0022] Example 2: Figure 1 A gas input pipe 110 is fixedly installed on the outer wall of the reactor 100, and the gas input pipe 110 is located below the double-bag blade separation unit. The double-bag blade separation unit includes a blade 500, and a liquid outlet pipe 510 is connected below the blade 500. An inspection port 120 is fixedly installed on the outer wall of the front end of the reactor 100, and an exhaust port 130 is opened on the outer wall of the top of the reactor 100. A drain pipe 140 is fixedly connected to the outer wall of the bottom end of the reactor 100, and a plurality of drain pipes 140 are provided.

[0023] The specific usage scenario of this embodiment is as follows: a gas input pipe 110 is provided to transport the nitrogen oxide gas in the form of mist droplets to the interior of the reactor 100; a liquid outlet pipe 510 is provided to transport the liquid to the bottom of the reactor 100, so that the liquid is discharged from the bottom of the reactor 100 through the liquid discharge pipe 140; an inspection port 120 is provided to inspect the interior of the reactor 100; and an exhaust port 130 is provided to discharge the gas out of the reactor 100 to enter the next process.

[0024] Example 3: Figure 1 and Figure 2The fiber demisting and cleaning unit includes a water injection pipe 200, which is fixedly installed on the inner wall of the reactor 100. A nozzle is evenly fixedly installed on the outer wall of the water injection pipe 200. The nozzle is used to spray the outer walls of the top and bottom ends of the gas-blocking one-way rapid liquid discharge unit. A frame 310 is evenly fixedly installed on the inner wall of the demisting section. The frame 310 is used to demist the nitrogen oxide gas.

[0025] The specific usage scenario of this embodiment is: by setting a water injection pipe 200 and a nozzle for use together, it is convenient to flush the top and bottom surfaces of the air-blocking one-way rapid liquid discharge unit.

[0026] Example 4: Figure 3 The cavity-type pressurized self-flushing unit includes a spray pipe 400, which is fixedly installed on the inner wall of the reactor 100. The input end of the spray pipe 400 is fixedly connected to the water inlet pipe through a flange 410. The manifold 420 is evenly fixedly installed on the outer wall of the bottom end of the spray pipe 400. A boosting pipe 430 is provided at the bottom of the manifold 420. The boosting pipe 430 is set to a cone shape, and the output end of the boosting pipe 430 points to the surface of the blade 500 in the double-bag blade separation unit.

[0027] The specific usage scenario of this embodiment is: by setting up a spray pipe 400 for installing a manifold 420, the water sprayed from the manifold 420 is passed through a booster pipe 430 to reduce the spray diameter, thereby increasing the impact force of the water flow during spraying, thereby improving the flushing efficiency.

[0028] The working principle of the utility model is: when used, a technician in this field will let the nitrogen oxide gas containing mist droplets enter the interior of the reactor 100 through the gas input end 110, and then pass through the double-bag blade separation unit. The double-bag blade separation unit is a gas-liquid separation device, which is usually used in the chemical, petroleum, natural gas and other industries. Its working principle is based on the special design of the blades and the dynamic characteristics of the airflow. When the liquid-containing gas enters the double-bag blade separation unit, the airflow will form a complex flow path between the blades. The design of the blade 500 allows the airflow to turn and accelerate multiple times during the flow process, so that the liquid particles collide and agglomerate with the surface of the blade 500 under the action of inertia. The agglomerated liquid flows downward under the action of gravity and gathers at the bottom of the separator to form a liquid collection area. The gas continues to flow upward through the gaps between the blades and is discharged from the outlet of the double-bag blade separation unit. Then, the nitrogen oxide gas containing mist droplets enters the bottom of the gas-blocking one-way rapid liquid discharge unit and enters the skeleton 310 inside the demisting section. The gas-blocking one-way rapid liquid discharge unit has micropores on the inner skeleton 310 of the non-porous area at the bottom of the gas-blocking one-way rapid liquid discharge unit, which only allow droplets to pass through while airflow is difficult to pass through. The droplets separated on the inner surface of the filter element are quickly discharged to the non-porous area outside the filter element. The fiber demisting cleaning unit and the cavity-type pressurized self-flushing unit are opened in turn to realize online cleaning. In this process, due to the fluctuation of the ammonia ratio of the raw materials at the front end of the process, ammonium salt crystals will be produced in each separation element of the demisting device, resulting in an increase in the overall pressure drop of the equipment, thereby facilitating and quickly performing demisting operations simultaneously during the separation of nitrogen oxides, thereby improving work efficiency.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nitrogen oxide demisting device, comprising a reactor (100), wherein a double-bag blade separation unit is fixedly installed on the inner wall of the reactor (100), characterized in that: A cavity-type pressurized self-flushing unit is fixedly installed above the double-bag blade separation unit, and a fiber demisting cleaning unit is installed above the cavity-type pressurized self-flushing unit. Two groups of fiber demisting cleaning units are arranged above and below, and an air-blocking one-way rapid liquid discharge unit is fixedly installed between the two groups of fiber demisting cleaning units. The air-blocking one-way rapid liquid discharge unit comprises a shell (300), the top of the inner wall of the shell (300) is a demisting section, and the bottom end of the shell (300) is fixedly installed with a support inner side plate (320) and a support outer side plate (330), and an overflow hole (340) is provided on the outer wall of the bottom end of the support outer side plate (330).

2. A nitrogen oxide demisting device according to claim 1, characterized in that: A gas input pipe (110) is fixedly installed on the outer wall of the reactor (100), and the gas input pipe (110) is located below a double-bag blade separation unit. The double-bag blade separation unit comprises blades (500), and a liquid outlet pipe (510) is connected below the blades (500).

3. A nitrogen oxide demisting device according to claim 2, characterized in that: The front end outer wall of the reactor (100) is fixedly provided with an inspection port (120), the top outer wall of the reactor (100) is provided with an exhaust port (130), the bottom end outer wall of the reactor (100) is fixedly connected with a drain pipe (140), and a plurality of drain pipes (140) are provided.

4. The nitrogen oxide demisting device according to claim 1, characterized in that: The fiber demisting and cleaning unit comprises a water injection pipe (200), the water injection pipe (200) is fixedly mounted on the inner wall of the reaction kettle (100), and nozzles are evenly fixedly mounted on the outer wall of the water injection pipe (200), the nozzles are used to spray the outer walls of the top and bottom ends of the gas blocking one-way rapid liquid discharge unit.

5. A nitrogen oxide demisting device according to claim 4, characterized in that: A frame (310) is evenly fixedly installed on the inner wall of the demisting section, and the frame (310) is used to demist the nitrogen oxide gas.

6. The nitrogen oxide demisting device according to claim 1, characterized in that: The chamber-type pressurized self-flushing unit comprises a spray pipe (400), wherein the spray pipe (400) is fixedly mounted on the inner wall of the reaction kettle (100), the input end of the spray pipe (400) is fixedly connected to the water inlet pipe via a flange (410), and a manifold (420) is evenly fixedly mounted on the outer wall of the bottom end of the spray pipe (400).

7. A nitrogen oxide demisting device according to claim 6, characterized in that: A boost pipe (430) is provided at the bottom of the manifold (420), and the boost pipe (430) is configured to be conical, with the output end of the boost pipe (430) pointing toward the surface of the blade (500) in the double-bag blade separation unit.

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