PM (particulate matter) capturing device

Abstract

The invention provides a PM (particulate matter) capturing device. The PM capturing device comprises a liquid energy storage pipe, a flue gas mixing chamber and a mixed injection pipe, wherein the liquid energy storage pipe is connected with a water pump, and when liquid passes through the liquid energy storage pipe, under the condition that the pressure of the liquid is not changed, the liquid generates suction force by changing the internal pressure difference of the liquid energy storage pipe; the flue gas mixing chamber is connected with the liquid energy storage pipe and used for absorbing flue gas when liquid passes through an internal channel of the flue gas mixing chamber so as to form a flue gas-water mixture; and the mixed injection pipe is connected with the flue gas mixing chamber and is used for spraying the flue gas-water mixture in a net form so as to achieve the purpose of capturing PM particles. According to the PM capturing device provided by the invention, the dust removal effect is effectively improved, so that the discharged flue gas can meet the emission standard.

Description

[0001] This case is a divisional application of the invention patent application with application number 201811626169.2 and invention name “A PM particle capture device”. Technical Field

[0002] The present invention relates to the technical field of PM particle treatment, and in particular to a PM particle capturing device. Background Art

[0003] PM2.5-10 series particles are difficult to capture. Traditional methods use bag dust removal and electrostatic dust removal. Due to the limitation of bag mesh size and the control defects of electrostatic dust removal, the dust removal effect can usually only reach 30mg / m3. Now that ultra-low emission standards have been implemented, traditional bag boiler dust removal (electrostatic dust removal) is difficult to reach below 30mg / m3, and particulate matter emissions are close to zero. Summary of the invention

[0004] In view of this, the present invention proposes a PM particle capture device, which aims to solve the problem that when existing dust removal equipment removes dust from flue gas, the dust removal effect is poor and it is difficult to meet ultra-low emission standards.

[0005] The present invention proposes a PM particle capture device, comprising: a liquid energy storage tube, a smoke mixing chamber and a mixing injection tube; wherein:

[0006] The liquid energy storage pipe is connected to a water pump. When the liquid passes through the pipe, the internal pressure difference is changed under the condition that the liquid pressure remains unchanged, so that the liquid generates suction.

[0007] The smoke mixing chamber is detachably connected to the liquid energy storage tube and is used to absorb smoke when the liquid passes through its internal passage to form a smoke-water mixture containing mixed bubbles;

[0008] The mixing injection pipe is detachably connected to the smoke mixing chamber and is used to spray the smoke-water mixture in a net-like form to achieve the purpose of capturing PM particles;

[0009] An ultrasonic device and a plurality of coils of heating wires are arranged in the smoke mixing chamber, surrounding the inner side of the smoke mixing chamber; the ultrasonic device is an ultrasonic generator arranged in the smoke mixing chamber;

[0010] During the mixing process of the liquid and the flue gas, the ultrasonic generator and the heating wire of this embodiment are controlled as follows, wherein the ultrasonic device vibrates according to the following relationship between the ultrasonic vibration frequency and the heating temperature.

[0011] According to some embodiments, the diameter of the inner channel of the liquid energy storage tube gradually decreases from the inlet to the outlet.

[0012] According to some embodiments, the outlet diameter of the internal channel of the liquid energy storage tube is 1 / 8 of the inlet diameter.

[0013] According to some embodiments, the length of the liquid energy storage tube is 3-5 times the diameter of the entrance of its internal channel.

[0014] According to some embodiments, the smoke mixing chamber is adjustably disposed between the liquid energy storage tube and the mixing injection tube.

[0015] According to some embodiments, the length of the smoke mixing chamber is 1-2 times the inlet diameter of the liquid energy storage tube.

[0016] According to some embodiments, the diameter of the inner passage of the mixing injection pipe gradually decreases from the inlet to the outlet.

[0017] According to some embodiments, the diameter of the inlet of the internal channel of the mixing injection pipe is 1 / 4 of the diameter of the inlet of the liquid energy storage pipe.

[0018] According to some embodiments, the diameter of the outlet of the internal passage of the mixing injection pipe is 1 / 7 of the diameter of the inlet of the liquid energy storage pipe.

[0019] According to some embodiments, the length of the mixing injection pipe is 2-3 times the diameter of the inlet of the liquid energy storage pipe.

[0020] Compared with the prior art, the beneficial effect of the present invention lies in that, in the PM particle capture device provided by the present invention, when the liquid passes through the inside of the liquid energy storage tube, under the condition of unchanged liquid pressure, by changing its internal pressure difference, suction is generated by the liquid, thereby effectively enhancing the ability of the liquid to mix with the flue gas in the flue gas mixing chamber, thereby making the mixed gas-liquid mixture output through the mixing injection pipe in the form of mixed bubbles, significantly increasing the contact area between the liquid and the flue gas, so that the PM particles in the flue gas are wrapped by the mixed bubbles and flow into the sewage pool together with the liquid, thereby effectively improving the dust removal effect, so that the discharged flue gas can meet the emission standards.

[0021] In particular, in the PM particle capturing device provided by the present invention, an ultrasonic device and several coils of heating wire are arranged in the smoke mixing chamber to perform heat removal and vibration during the mixing process of the liquid and the smoke, thereby further enhancing the ability of the liquid to mix with the smoke in the smoke mixing chamber, so that the liquid includes more bubbles, thereby effectively enhancing the ability of the liquid to capture PM particles.

[0022] In particular, in the PM particle capture device provided by the present invention, the diameter of the internal channel of the liquid energy storage tube gradually decreases from the inlet to the outlet, which further effectively enhances the adsorption capacity of the liquid, so that the liquid can be fully mixed with the flue gas in the flue gas mixing chamber to form mixed bubbles of flue gas and clean water; at the same time, the diameter of the internal channel of the mixing injection tube also gradually decreases from the inlet to the outlet, which effectively improves the energy of the liquid containing a large number of mixed bubbles when it is output therethrough, and forms a bubble-state water mist net after output, which meets the flue gas, and the particles are wrapped and "implanted", and are washed into the sewage pool by water, thereby achieving the purpose of capturing PM series particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0024] Figure 1 A schematic diagram of the structure of a PM particle capture device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0026] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

[0027] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1 As shown, a PM particle capture device according to an embodiment of the present invention comprises: a liquid energy storage tube 1, a smoke mixing chamber 2 and a mixing injection tube 3; wherein the liquid energy storage tube 1 is connected to a water pump, and when liquid passes through the interior thereof, under the condition that the liquid pressure remains unchanged, suction is generated by the liquid by changing its internal pressure difference; the smoke mixing chamber 2 is connected to the liquid energy storage tube 1, and is used to absorb smoke when the liquid passes through its internal channel to form a smoke-water mixture; the mixing injection tube 3 is connected to the smoke mixing chamber 2, and is used to spray the smoke-water mixture in a mesh form to achieve the purpose of capturing PM particles. During use, when the liquid enters the liquid energy storage tube 1 through the water pump, under the condition of unchanged liquid pressure, the internal pressure difference is changed so that the liquid generates suction, which effectively enhances the ability of the liquid to mix with the flue gas in the flue gas mixing chamber 2, and then the mixed gas-liquid mixture is output through the mixing injection pipe in the form of mixed bubbles, which significantly increases the contact area between the liquid and the flue gas, so that the PM particles in the flue gas are wrapped by the mixed bubbles and flow into the sewage pool together with the liquid, thereby effectively improving the dust removal effect, so that the discharged flue gas can meet the emission standards.

[0033] Specifically, the liquid energy storage tube 1 is a tubular component, one end of which is connected to the water pump and the other end is connected to the smoke mixing chamber 2. The cross-sectional area of ​​its internal channel changes from the inlet to the outlet. When the liquid enters the interior through the water pump, the pressure of the liquid changes, and the diameter of the internal channel changes, and then the internal pressure difference changes, so that the liquid inside it produces a very strong adsorption force, which effectively ensures the ability of the liquid to mix with the smoke in the subsequent process. The connection method of the liquid energy storage tube 1 with the water pump and the smoke mixing chamber 2 can be plug-in, card-on or threaded, as long as the firmness and airtightness of the connection can be ensured; and its cross-sectional shape can be any shape such as circular, rectangular, triangular, etc., as long as it does not affect the function of its channel. In this embodiment, the liquid energy storage tube 1 is a tubular component, the cross-sectional shape of its internal channel is circular, and the diameter gradually decreases from the inlet to the outlet, until the outlet diameter is 1 / 8 of the inlet diameter, and its length is 3-5 times the inlet diameter. At the same time, it is connected to the smoke mixing chamber by bolts 4.

[0034] Specifically, the smoke mixing chamber 2 is a tubular component, one end of which is connected to the liquid energy storage tube 1 and the other end is connected to the mixing injection tube 3, and is used as a chamber for mixing smoke and liquid. During use, when the liquid enters the liquid energy storage tube 1, due to the strong adsorption force of the liquid, it can fully contact the smoke inside it and form a large amount of mixed bubbles, thereby greatly increasing the contact area between the liquid and the particles and improving the ability of the liquid to adsorb particles. The connection method of the smoke mixing chamber 2 with the liquid energy storage tube 1 and the mixing injection tube 3 can be plug-in, card-on or threaded, as long as the firmness and airtightness of the connection can be ensured; and its cross-sectional shape can be any shape such as circular, rectangular, triangular, etc., as long as it does not affect the performance of its channel function. In this embodiment, the smoke mixing chamber 2 is a tubular component, the cross-sectional shape of its internal channel is circular, and its length is 1-2 times the inlet diameter of the liquid energy storage tube 1. At the same time, it is adjustably connected to the liquid energy storage tube 1 and the mixing injection tube 3 by bolts 4.

[0035] Specifically, the mixing injection pipe 3 is a tubular member, one end of which is connected to the smoke mixing chamber 2, and is used to spray the smoke-water mixture in a net-like form to achieve the purpose of capturing PM particles. The cross-sectional area of ​​the internal channel of the mixing injection pipe 3 changes from the inlet to the outlet. When a large amount of mixed foaming liquid enters the interior through the smoke mixing chamber 2, the diameter of its internal channel changes, and then the internal pressure difference changes, so that the liquid has a higher energy at its outlet, and forms a water mist net after output, which meets the smoke, and the particles "implant", the particles are wrapped, and washed into the sewage pool by water, thereby achieving the purpose of capturing PM series particles. The connection method of the mixing injection pipe 3 and the smoke mixing chamber 2 can be plug-in, card-on or threaded connection, as long as the firmness and airtightness of the connection can be ensured; and its cross-sectional shape can be any shape such as circular, rectangular, triangular, etc., as long as it does not affect the function of its channel. In this embodiment, the mixing injection pipe 3 is a tubular member, the cross-section of its internal passage is circular, and the diameter gradually decreases from the inlet to the outlet, the inlet diameter is 1 / 4 of the inlet diameter of the liquid energy storage pipe 1, the outlet diameter is 1 / 7 of the inlet diameter of the liquid energy storage pipe 1, and the length is 2-3 times the inlet diameter of the liquid energy storage pipe 1. At the same time, it is adjustably connected to the smoke mixing chamber by bolts 4.

[0036] In this embodiment, an ultrasonic device and a plurality of coils of heating wires are arranged in the smoke mixing chamber 2, surrounding the inner side of the smoke mixing chamber; the ultrasonic device is an ultrasonic generator arranged in the smoke mixing chamber.

[0037] During the mixing process of the liquid and the flue gas, the ultrasonic generator and the heating wire of this embodiment are controlled as follows, wherein the ultrasonic device vibrates according to the following relationship between the ultrasonic vibration frequency and the heating temperature, wherein in the first temperature section, within the temperature range of 25-40° C.:

[0038]

[0039] In the formula, represents the real-time vibration frequency of the first temperature section, represents the real-time temperature in the first temperature section, represents the reference preset temperature value, the temperature is 30°C, m represents the weight of the smoke entering the smoke mixing chamber, M represents the mass of the liquid entering the smoke mixing chamber, c represents the specific heat of the mixed liquid, represents the preset vibration frequency of the first temperature section, which is 25kHz;

[0040] Among them, in the second temperature section, within the temperature range of 40-45°C:

[0041]

[0042] Wherein, represents the real-time vibration frequency of the second temperature section, represents the real-time temperature in the second temperature section, represents the reference preset temperature value, the constant temperature is 40°C, m represents the weight of the smoke entering the smoke mixing chamber, M represents the mass of the liquid entering the smoke mixing chamber, c represents the specific heat of the mixed liquid, represents the preset vibration frequency of the second temperature section, which is 55kHz;

[0043] In the above step d, the vibration frequency in the temperature range from room temperature to 45°C is 25kHz;

[0044] When the temperature rises to 45℃, within the temperature range of 45-55℃:

[0045]

[0046] In the formula, represents the real-time vibration frequency of the third temperature section, represents the real-time temperature in the third temperature section, represents the reference preset temperature value, the temperature is 45°C, c represents the specific heat of the mixed liquid, represents the preset vibration frequency of the first temperature section, which is 40kHz;

[0047] Among them, during the cooling process, in the temperature range of 25-55℃:

[0048]

[0049] In the formula, represents the real-time vibration frequency of the fourth temperature section, represents the real-time temperature in the fourth temperature section, c represents the specific heat of the mixed liquid, m represents the weight of the smoke entering the smoke mixing chamber, M represents the total mass of the liquid entering the smoke mixing chamber, and represents the preset vibration frequency of the fourth temperature section, which is 30kHz.

[0050] It can be obviously concluded that, in the PM particle capture device provided by the present invention, when the liquid passes through the inside of the liquid energy storage tube, under the condition of unchanged liquid pressure, by changing its internal pressure difference, suction is generated by the liquid, thereby effectively enhancing the ability of the liquid to mix with the smoke in the smoke mixing chamber, thereby making the mixed gas-liquid mixture output through the mixing injection pipe in the form of mixed bubbles, significantly increasing the contact area between the liquid and the smoke, so that the PM particles in the smoke are wrapped by the mixed bubbles and flow into the sewage pool together with the liquid, thereby effectively improving the dust removal effect, so that the exhausted smoke can meet the emission standards. In particular, the diameter of the internal channel of the liquid energy storage tube gradually decreases from the inlet to the outlet, which further effectively enhances the adsorption capacity of the liquid, so that the liquid can be fully mixed with the flue gas in the flue gas mixing chamber to form mixed bubbles; at the same time, the diameter of the internal channel of the mixing injection tube also gradually decreases from the inlet to the outlet, which effectively improves the energy of the liquid containing a large number of mixed bubbles when it is output through it, and forms a water mist net after the output, which meets the flue gas, and the particles are "implanted", the particles are wrapped, and are washed into the sewage pool by water, thereby achieving the purpose of capturing PM series particles.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0052] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] The exemplary embodiments of the present invention are specifically shown and described above. It should be understood that the present invention is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present invention is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended clauses.

Claims

1. A PM particle capture device, characterized in that: include: Liquid energy storage tube, flue gas mixing chamber and mixing injection tube, wherein: The liquid energy storage pipe is connected to a water pump. When the liquid passes through the pipe, the internal pressure difference is changed under the condition that the liquid pressure remains unchanged, so that the liquid generates suction. The smoke mixing chamber is detachably connected to the liquid energy storage tube and is used to absorb smoke when the liquid passes through its internal passage to form a smoke-water mixture containing mixed bubbles; The mixing injection pipe is detachably connected to the smoke mixing chamber and is used to spray the smoke-water mixture in a net-like form to achieve the purpose of capturing PM particles.

2. The PM particle capturing device according to claim 1, characterized in that: The diameter of the inner channel of the liquid energy storage tube gradually decreases from the inlet to the outlet.

3. The PM particle capturing device according to claim 2, characterized in that: The outlet diameter of the internal channel of the liquid energy storage tube is 1 / 8 of the inlet diameter.

4. The PM particle capturing device according to claim 3, characterized in that: The length of the liquid energy storage tube is 3-5 times the diameter of the entrance of its internal passage.

5. The PM particle capturing device according to claim 4, characterized in that: The smoke mixing chamber is adjustably arranged between the liquid energy storage pipe and the mixing injection pipe.

6. The PM particle capturing device according to claim 5, characterized in that: The length of the smoke mixing chamber is 1-2 times the diameter of the inlet of the liquid energy storage tube.

7. The PM particle capturing device according to claim 1, characterized in that: The diameter of the inner passage of the mixing injection pipe gradually decreases from the inlet to the outlet.

8. The PM particle capturing device according to claim 7, characterized in that: The diameter of the inlet of the internal passage of the mixing injection pipe is 1 / 4 of the diameter of the inlet of the liquid energy storage pipe.

9. The PM particle capturing device according to claim 8, characterized in that: The diameter of the outlet of the internal passage of the mixing injection pipe is 1 / 7 of the diameter of the inlet of the liquid energy storage pipe.

10. The method according to any one of claims 1 to 6, characterized in that: The length of the mixing injection pipe is 2-3 times the diameter of the inlet of the liquid energy storage pipe.

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