Particulate matter removing, trapping and separating integrated equipment

Abstract

The invention provides particulate matter removal, trapping and separation integrated equipment. The particulate matter removal, trapping and separation integrated equipment comprises a liquid distribution pipe, a particulate matter trapping assembly and a gas-liquid separation chamber, the particulate matter trapping assembly comprises a dynamic pressure conversion structure, a flue gas suction structure and a gas-liquid mixing chamber; the liquid distribution pipe is connected with an inlet of the gas-liquid mixing chamber through the dynamic pressure conversion structure, the liquid distribution pipe is used for introducing high-pressure liquid, and the dynamic pressure conversion structure is used for spraying the high-pressure liquid into the gas-liquid mixing chamber to form spraying liquid; the flue gas suction structure is connected with an inlet of the gas-liquid mixing chamber, and the flue gas suction structure sucks flue gas into the gas-liquid mixing chamber by taking jet liquid in the gas-liquid mixing chamber as power; an outlet of the gas-liquid mixing chamber is connected with an inlet of the gas-liquid separation chamber, and a liquid outlet and a gas outlet are formed in the gas-liquid separation chamber. Jet liquid is adopted as power, smoke is sucked, gas and liquid are mixed in the mixing chamber, the pressure of the gas side is not reduced, and the power source is pressurizing liquid which is easy to obtain.

Description

Technical Field

[0001] The present invention relates to the technical field of fine particle removal, and in particular to an integrated device for particle removal, capture and separation. Background Art

[0002] Flue gas desulfurization is an industrial process used to reduce or remove sulfur dioxide from flue gases produced by the combustion of fossil fuels such as coal, oil or natural gas. Sulfur dioxide is a harmful gas that is not only harmful to the environment but also causes acid rain and respiratory diseases. Flue gas desulfurization technology is essential to reduce air pollution and protect the environment and human health.

[0003] In the limestone-gypsum wet flue gas desulfurization technology, the circulating liquid spray adopts a single-stage or multi-stage cycle, which has a relatively high SO2 absorption efficiency. However, this technology generally achieves ultra-low emission of particulate matter less than 5mg / Nm by adding wet electrostatic precipitator. 3 Environmental protection indicators, wet electrostatic precipitator has a high failure rate and high energy consumption.

[0004] In the process of using ammonia method to remove high concentration sulfur dioxide flue gas, aerosol control is difficult and easily causes flue gas tailing, which requires adding wet electrostatic precipitator or increasing equipment investment to increase the number of desulfurization cycle stages to solve the problem.

[0005] In the prior art, spray washing is generally used as the last particulate matter removal method at the outlet of flue gas desulfurization and washing tower. The gas-liquid contact mixing intensity is insufficient, and the particulate matter in the gas is difficult to fully contact with the liquid. The washing efficiency of micron-sized particles is poor. Increasing the number of washing stages and wet electrostatic precipitators will cause a large pressure drop on the flue gas side, affecting the front-end load. Summary of the invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide an integrated device for removing, capturing and separating particulate matter.

[0007] According to the present invention, a particle removal, capture and separation integrated device comprises: a liquid distribution pipe, a particle capture component and a gas-liquid separation chamber;

[0008] The particle capture assembly comprises a dynamic pressure conversion structure, a smoke inhalation structure and a gas-liquid mixing chamber; the liquid distribution pipe is connected to the inlet of the gas-liquid mixing chamber through the dynamic pressure conversion structure, the liquid distribution pipe is used to pass high-pressure liquid, and the dynamic pressure conversion structure is used to spray the high-pressure liquid into the gas-liquid mixing chamber to form sprayed liquid;

[0009] The smoke suction structure is connected to the inlet of the gas-liquid mixing chamber, and the smoke suction structure uses the sprayed liquid in the gas-liquid mixing chamber as a power to suck smoke into the gas-liquid mixing chamber;

[0010] The outlet of the gas-liquid mixing chamber is connected to the inlet of the gas-liquid separation chamber, and the gas-liquid separation chamber is provided with a liquid outlet and a gas outlet.

[0011] Preferably, the dynamic pressure conversion structure includes an inner wall of the liquid channel, an outer wall of the liquid channel, a liquid guide port and a liquid guide fin;

[0012] The outer wall of the liquid channel is arranged around the inner wall of the liquid channel, and a liquid channel is formed between the outer wall of the liquid channel and the inner wall of the liquid channel;

[0013] The liquid guide port is arranged on the outer wall of the liquid channel, and the liquid guide fin is arranged at the position of the liquid guide port;

[0014] The liquid guide port and the liquid guide fin form a spiral liquid inlet structure, and the high-pressure liquid enters the liquid channel through the spiral liquid inlet structure;

[0015] The high-pressure liquid is injected into the gas-liquid mixing chamber through the liquid channel to form injected liquid, and enters the gas-liquid mixing chamber in a spirally rotating forward state.

[0016] Preferably, the smoke inhalation structure comprises an outer wall of the gas channel, an inner wall of the gas channel, and a gas guide vane at the gas guide port;

[0017] The outer wall of the gas channel is arranged around the inner wall of the gas channel, and the inner wall of the gas channel is arranged around the outer wall of the liquid channel, so that a gas channel is formed between the inner wall of the gas channel and the outer wall of the liquid channel;

[0018] The gas guide port is provided on the inner wall of the gas channel, and the gas guide fin is provided at the position of the gas guide port;

[0019] The gas guide port and the gas guide vane form a spiral air intake structure, and smoke enters the gas channel through the spiral air intake structure;

[0020] The smoke enters the gas-liquid mixing chamber through the gas passage and enters the gas-liquid mixing chamber in a spirally rotating forward state.

[0021] Preferably, a gas-liquid guiding back-mixing guide wing is provided in the gas-liquid mixing chamber, and the gas-liquid guiding back-mixing guide wing is used for guiding the reflux of the smoke and the injected liquid.

[0022] Preferably, the gas-liquid mixing chamber comprises a first chamber and a second chamber;

[0023] The dynamic pressure conversion structure is connected to the first chamber, and the first chamber is connected to the second chamber through a gas-liquid rotating nozzle;

[0024] The gas-liquid guiding back-mixing guide wing is arranged in the first chamber, adjacent to the gas-liquid rotating nozzle;

[0025] The spray liquid and smoke are mixed in the first chamber and then sprayed into the second chamber through the gas-liquid rotating nozzle;

[0026] The flow cross section in the second chamber is larger than the flow cross section in the first chamber, and the flow cross section in the gas-liquid separation chamber is larger than the flow cross section in the second chamber.

[0027] Preferably, it also includes a demisting component;

[0028] The demisting assembly is connected to the gas outlet; the demisting assembly includes a gas discharge channel, and the upper and lower ends of the gas discharge channel are respectively provided with a gas discharge port and a liquid discharge port;

[0029] The gas discharge channel is provided with a wire mesh demister, a baffle demister and a centrifugal gas-liquid separator in order from top to bottom;

[0030] The baffle demister is located above the gas outlet, and the centrifugal gas-liquid separator is located below the gas outlet.

[0031] Preferably, a droplet collecting plate is provided on the centrifugal gas-liquid separator along its axial direction, and the droplet collecting plate is arranged to be inclined upward, and the angle between the plane where the droplet collecting plate is located and the horizontal plane is 20° to 60°.

[0032] Preferably, the spiral inclination angle of the liquid guide fin relative to the outer wall of the liquid channel is less than 30°;

[0033] The spiral inclination angle of the gas guide vane relative to the inner wall of the gas channel is less than 30°.

[0034] Preferably, the liquid distribution pipe, the particle capture assembly and the gas-liquid separation chamber constitute a removal, capture and separation module;

[0035] The removal, capture and separation modules are provided in plurality, and the plurality of the removal, capture and separation modules are connected in series;

[0036] The gas outlet of the first removal, capture and separation module is connected to the flue gas suction structure of the second removal, capture and separation module, and the gas outlet of the last removal, capture and separation module is connected to the defogger assembly.

[0037] Preferably, the particle capture assembly is provided in plurality;

[0038] The plurality of particle capture assemblies are connected in parallel to the gas-liquid separation chamber, and the gas-liquid mixing chambers of the plurality of particle capture assemblies are all connected to the gas-liquid separation chamber.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The present invention forms a jet liquid through a dynamic pressure conversion structure, uses the jet liquid as power, sucks in smoke through a smoke suction structure, mixes gas and liquid in a mixing chamber, and the pressure on the gas side does not decrease. The power source is an easily accessible pressurized liquid. The principle is that when a high-pressure liquid passes through a gradually shrinking pipe, the flow rate will increase and the pressure will decrease. At the narrowest point of the pipe, the static pressure reaches a minimum value. The entire fluid undergoes a pipe shrinkage process at the same time, so the pressure decreases at the same time, generating external suction on the gas at the suction port.

[0041] 2. The dynamic pressure conversion structure of the present invention has liquid guide vanes, through which the liquid is rotated at high speed to enter the gas-liquid mixing chamber. The smoke intake structure of the present invention has gas guide vanes, through which the smoke is rotated at high speed to enter the gas-liquid mixing chamber. The high-speed rotating liquid and the high-speed rotating gas are strongly mixed in the gas-liquid mixing chamber, achieving a better gas-liquid mixing effect, and then achieving a good capture effect of harmful substances in the smoke.

[0042] 3. The present invention is provided with a gas-liquid guiding back-mixing guide wing in the gas-liquid mixing chamber, so that the gas and the sprayed liquid can be returned and mixed multiple times in the gas-liquid mixing chamber, the high-speed rotating liquid and the high-speed rotating gas are continuously mixed, the sprayed liquid reaches a micron-level atomization state, the atomized liquid and the gas reach a micron-level contact and mixing, and the pollutants in the gas phase are captured by the liquid phase droplets.

[0043] 4. The flow cross-section of the gas-liquid separation chamber of the present invention is larger than the flow cross-section of the gas-liquid mixing chamber. The fully mixed gas-liquid mixed medium enters the gas-liquid separation chamber. In the gas-liquid separation chamber, due to the increase in the flow area, the flow rate of the gas-liquid mixed medium decreases, thereby achieving initial separation of gas and liquid.

[0044] 5. The present invention sets a gas channel at the gas outlet, and a gas-liquid separator is set in the gas channel. A centrifugal separator is used as a first-level demisting structure to condense the mist droplets, and a baffle demister is used as a second-level demisting structure for separation and a wire mesh demister is used as a third-level demisting structure for separation. The separators at each level are organically combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0046] Figure 1It is a schematic diagram of the structure of the integrated equipment for particle removal, capture and separation;

[0047] Figure 2 It is a structural schematic diagram of a dynamic pressure conversion structure and a smoke inhalation structure;

[0048] Figure 3 To highlight the structural diagram of the gas-liquid guided back-mixing guide wing;

[0049] Figure 4 To highlight the schematic diagram of the structure of the droplet catcher plate;

[0050] Figure 5 It is a structural schematic diagram of multiple removal, capture and separation modules connected in series;

[0051] Figure 6 Schematic diagram of the structure of multiple particle capture components connected in parallel Figure 1 ;

[0052] Figure 7 Schematic diagram of the structure of multiple particle capture components connected in parallel Figure 2 .

[0053] The figure shows:

[0054] Liquid distribution pipe 1 Liquid outlet 8

[0055] Dynamic pressure conversion structure 2 Centrifugal gas-liquid separator 9

[0056] Liquid channel inner wall 201 Liquid discharge port 10

[0057] Liquid channel outer wall 202 Droplet catcher plate 11

[0058] Liquid guide port 203 Baffle demister 12

[0059] Liquid guide vane 204 Wire mesh demister 13

[0060] Smoke inhalation structure 3 Gas discharge port 14

[0061] Gas channel outer wall 301 Demisting component 15

[0062] Gas channel inner wall 302 Particle capture component 16

[0063] Gas guide port 303 Gas outlet 17

[0064] Gas guide vane 304 Gas discharge channel 18

[0065] Gas-liquid guide back-mixing guide wing 4 High-pressure liquid inlet 19

[0066] Gas-liquid rotating nozzle 5 Scrubber shell 20

[0067] Gas-liquid mixing chamber 6 Gas phase distribution chamber 21

[0068] First chamber 601 Removal capture and separation module 22

[0069] Second chamber 602 separator housing 23

[0070] Gas-liquid separation chamber 7 Guide groove 24 DETAILED DESCRIPTION

[0071] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0072] Embodiment 1:

[0073] like Figure 1-7 As shown, this embodiment provides an integrated device for particle removal, capture and separation, including: a liquid distribution pipe 1, a particle capture assembly 16 and a gas-liquid separation chamber 7; the particle capture assembly 16 includes a dynamic pressure conversion structure 2, a smoke inhalation structure 3 and a gas-liquid mixing chamber 6; the liquid distribution pipe 1 is connected to the inlet of the gas-liquid mixing chamber 6 through the dynamic pressure conversion structure 2, the liquid distribution pipe 1 is used to pass high-pressure liquid, and the dynamic pressure conversion structure 2 is used to spray the high-pressure liquid into the gas-liquid mixing chamber 6 to form a sprayed liquid; the smoke inhalation structure 3 is connected to the inlet of the gas-liquid mixing chamber 6, and the smoke inhalation structure 3 uses the sprayed liquid in the gas-liquid mixing chamber 6 as a power to inhale the smoke into the gas-liquid mixing chamber 6; the outlet of the gas-liquid mixing chamber 6 is connected to the inlet of the gas-liquid separation chamber 7, and the gas-liquid separation chamber 7 is provided with a liquid outlet 8 and a gas outlet 17. The high-pressure liquid is formed by a high-pressure liquid pressure pump and input into the liquid distribution pipe 1.

[0074] The gas-liquid mixing chamber 6 is provided with a gas-liquid guiding back-mixing guide wing 4, which is used for the reflux guidance of the smoke and the sprayed liquid. The gas-liquid mixing chamber 6 includes a first chamber 601 and a second chamber 602; the dynamic pressure conversion structure 2 is connected to the first chamber 601, and the first chamber 601 is connected to the second chamber 602 through the gas-liquid rotating nozzle 5; the gas-liquid guiding back-mixing guide wing 4 is arranged in the first chamber 601, adjacent to the gas-liquid rotating nozzle 5; the sprayed liquid and the smoke are mixed in the first chamber 601 and then sprayed into the second chamber 602 through the gas-liquid rotating nozzle 5; the flow cross section in the second chamber 602 is larger than the flow cross section in the first chamber 601, and the flow cross section in the gas-liquid separation chamber 7 is larger than the flow cross section in the second chamber 602.

[0075] The dynamic pressure conversion structure 2 includes a liquid channel inner wall 201, a liquid channel outer wall 202, a liquid guide port 203 and a liquid guide vane 204; the liquid channel outer wall 202 is arranged around the liquid channel inner wall 201, and a liquid channel is formed between the liquid channel outer wall 202 and the liquid channel inner wall 201; the liquid channel outer wall 202 is provided with a liquid guide port 203, and a liquid guide vane 204 is provided at the position of the liquid guide port 203; the liquid guide port 203 and the liquid guide vane 204 form a spiral liquid inlet structure, and the high-pressure liquid enters the liquid channel through the spiral liquid inlet structure; the high-pressure liquid is sprayed into the gas-liquid mixing chamber 6 through the liquid channel to form a sprayed liquid, and enters the gas-liquid mixing chamber 6 in a spiral rotating forward state. The spiral inclination angle of the liquid guide vane 204 relative to the liquid channel outer wall 202 is less than 30°.

[0076] The smoke inhalation structure 3 includes a gas channel outer wall 301, a gas channel inner wall 302, a gas guide port 303, and a gas guide vane 304; the gas channel outer wall 301 is arranged around the gas channel inner wall 302, the gas channel inner wall 302 is arranged around the liquid channel outer wall 202, and a gas channel is formed between the gas channel inner wall 302 and the liquid channel outer wall 202; a gas guide port 303 is arranged on the gas channel inner wall 302, and a gas guide vane 304 is arranged at the position of the gas guide port 303; the gas guide port 303 and the gas guide vane 304 form a spiral air intake structure, and the smoke enters the gas channel through the spiral air intake structure; the smoke enters the gas-liquid mixing chamber 6 through the gas channel, and enters the gas-liquid mixing chamber 6 in a spiral rotating forward state. The spiral inclination angle of the gas guide vane 304 relative to the gas channel inner wall 302 is less than 30°.

[0077] The integrated device for particle removal, capture and separation also includes a defogger assembly 15; the defogger assembly 15 is connected to a gas outlet 17; the defogger assembly 15 includes a gas discharge channel 18, and the upper and lower ends of the gas discharge channel 18 are respectively provided with a gas discharge port 14 and a liquid discharge port 10; a wire mesh defogger 13, a baffle defogger 12 and a centrifugal gas-liquid separator 9 are sequentially arranged in the gas discharge channel 18 from top to bottom; the baffle defogger 12 is located above the gas outlet 17, and the centrifugal gas-liquid separator 9 is located below the gas outlet 17. A droplet collecting plate 11 is arranged on the centrifugal gas-liquid separator 9 along its axial direction, and the droplet collecting plate 11 is arranged to be inclined upward, and the angle between the plane where the droplet collecting plate 11 is located and the horizontal plane is 20° to 60°.

[0078] In other embodiments, Figure 5As shown, the liquid distribution pipe 1, the particle capture assembly 16 and the gas-liquid separation chamber 7 can form a removal, capture and separation module 22; multiple removal, capture and separation modules 22 are provided, and multiple removal, capture and separation modules 22 are connected in series; the gas outlet 17 of the previous removal, capture and separation module 22 is connected to the flue gas suction structure 3 of the next removal, capture and separation module 22, and the gas outlet 17 of the last removal, capture and separation module 22 is connected to the defogger assembly 15. When it is set to be a multi-stage series connection, the number of series connection stages is 1 to 3 stages. When it is set to be a multi-stage series connection, there is a gas-liquid separation chamber between two stages;

[0079] When connected in series, a maximum of 3 modules are connected in series, and each module is provided with a separate liquid inlet. Each series module includes a high-pressure liquid inlet, a liquid distribution pipe 1, a dynamic pressure conversion structure 2, a flue gas suction structure 3, a gas-liquid guide back-mixing guide wing 4, a gas-liquid rotating nozzle 5, a gas-liquid mixing chamber 6, a gas-liquid separation chamber 7, and a liquid outlet 8. Only one centrifugal gas-liquid separator 9 is provided at the end of the process.

[0080] In other embodiments, Figure 6 and Figure 7 As shown, the particle capture assembly 16 is provided in multiple groups; multiple particle capture assemblies 16 are connected in parallel to the gas-liquid separation chamber 7, and the gas-liquid mixing chambers 6 of the multiple particle capture assemblies 16 are all connected to the gas-liquid separation chamber 7. It is provided in multiple groups in parallel, and the parallel arrangement mode is plane parallel and vertical parallel.

[0081] When arranged in parallel, multiple units can be arranged according to the gas volume, and each module is provided with a separate liquid inlet. Each serial module includes a high-pressure liquid inlet, a dynamic pressure conversion structure 2, a smoke suction structure 3, a gas-liquid guide back-mixing guide wing 4, a gas-liquid rotating nozzle 5, and a gas-liquid mixing chamber 6. The gas-liquid separation chamber 7 can be combined into one, and the centrifugal gas-liquid separator 9 can be combined into one.

[0082] The principle of the device in this embodiment is:

[0083] When high-pressure liquid passes through a gradually shrinking pipe, the flow rate will increase and the pressure will decrease. At the narrowest point of the pipe, the static pressure reaches its minimum. The entire fluid undergoes the pipe shrinkage process at the same time, so the pressure decreases at the same time, generating external suction on the gas at the suction port.

[0084] like Figure 2 As shown, the gas is sucked into the gas-liquid mixing chamber 6 of the gas channel, and the gas enters the gas-liquid mixing chamber 6 through the gas guide vanes 304 with high-speed rotation. The multiple gas guide vanes 304 form a spiral air intake structure, so that the gas can form a spiral forward state. The liquid enters the gas-liquid mixing chamber 6 through the liquid guide vanes 204 with high-speed rotation. The multiple liquid guide vanes 204 form a spiral liquid intake structure, so that the liquid can form a spiral forward state.

[0085] like Figure 3 As shown, A is the direction of fluid travel before backmixing, D is the direction of fluid travel at the backmixing guide wing, C is the backmixing fluid, B is the backmixing zone, and E is the direction of fluid travel after backmixing.

[0086] The rotating fluid advances to the back-mixing guide wing, turns back inward and backward to the central low-pressure area, and after back-mixing with the advancing fluid, it mainly exits through the channel near the outer wall. The first chamber 601 is provided with a gas-liquid channel near the outer wall, which is used to discharge the mixed gas-liquid fluid.

[0087] The working principle of the centrifugal gas-liquid separator 9 as a primary demisting structure is: mainly relying on the rotational motion caused by the tangential introduction of the airflow to make the liquid droplets with large inertial centrifugal force flung to the outer wall surface for separation.

[0088] The working principle of the baffle demister 12 is mainly based on the inertial impact of the gas and the action of centrifugal force. When the gas containing mist passes through the demister, the mist collides with the corrugated plate and is attached to the plate due to the inertial impact of the gas.

[0089] The working principle of the wire mesh demister 13 is mainly based on inertial collision, gravity sedimentation and diffusion. When the gas with mist rises at a certain speed through the wire mesh of the wire mesh demister, the mist collides with the wire mesh filaments due to inertia and is attached to the surface of the filaments. F is the plane line of the droplet catcher plate, G is the horizontal line of the equipment, and H is the rising angle of the droplet catcher plate, which is 20-60 degrees.

[0090] like Figure 4 As shown, an inlet of the centrifugal gas-liquid separator 9 is connected to the gas inlet 17 , and the centrifugal gas-liquid separator 9 includes a separator shell 23 , a droplet collecting plate 11 is arranged in the separator shell 23 , and the droplet collecting plate 11 is connected to the separator shell 23 through a guide groove 24 .

[0091] A circular droplet collecting plate 11 is arranged in the axial direction of the centrifugal gas-liquid separator 9 to collect droplets entrained by the gas from bottom to top. The rotational motion caused by the tangential introduction of the gas flow causes the droplets with a large inertial centrifugal force to be thrown toward the wall of the separator housing 23, thereby separating the gas and the liquid, and the gas moves upward at the bottom of the cone. The droplet collecting plate 11 is arranged in the axial direction to collect droplets entrained in the gas moving upward, and the droplets are guided to the wall through the guide groove 24 connecting the droplet collecting plate 11 and the wall to prevent the entrained droplets from re-entering the gas phase.

[0092] Embodiment 2:

[0093] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0094] like Figure 1 and Figure 2 As shown, this embodiment also provides an ultrafine particle removal, capture and separation integrated equipment, which relates to the field of fine particle removal, and is suitable for the washing tower of the alkali method for removing sulfur dioxide from the catalytic cracking unit, the flue gas desulfurization tower of the coal-fired boiler, the flue gas washing tower of the waste liquid incinerator, and the ultrafine particle control field of other wet flue gas purification equipment. The equipment of this embodiment uses the injection liquid as the power, sucks in the flue gas, mixes the gas and liquid in the mixing chamber, and the pressure on the gas side does not decrease. The power source is the easily accessible pressurized liquid.

[0095] The equipment of this embodiment includes: a liquid distribution pipe 1, a dynamic pressure conversion structure 2, a smoke suction structure 3, a gas-liquid guiding back-mixing guide wing 4, a gas-liquid rotating nozzle 5, a gas-liquid mixing chamber 6, a gas-liquid separation chamber 7, a liquid outlet 8, a centrifugal gas-liquid separator 9, a liquid discharge port 10, a droplet collecting plate 11, a baffle demister 12, a wire mesh demister 13, (14) a gas exhaust port 14, a demister assembly 15, and a particle collection assembly 16. The liquid distribution pipe 1 is provided with a high-pressure liquid inlet, the dynamic pressure conversion structure 2 is a multi-hole spiral nozzle, the gas-liquid mixing chamber 6 is a single-component gas-liquid mixing chamber, the gas-liquid separation chamber 7 is a multi-component gas-liquid separation chamber, and the particle collection assembly 16 is a single ultrafine particle collection assembly.

[0096] The outlet of the dynamic pressure conversion structure 2 is a multi-hole spiral nozzle, and the expansion angle of the spiral nozzle is less than 30°, which ensures that the liquid is in a spiral forward state after passing through the pressure end. The ejected liquid can be solid or liquid film.

[0097] The smoke enters the gas-liquid mixing chamber 6 of the device through the guide thread in the smoke inhalation structure 3. The guide thread is arranged on the inner wall of the gas chamber of the smoke inhalation structure 3. The spiral angle is between 30° and 150°. The high-speed rotating liquid and the high-speed rotating gas are strongly mixed in the gas-liquid mixing chamber.

[0098] A gas-liquid guiding back-mixing guide wing 4 is arranged in the gas-liquid mixing chamber 6 to realize multiple back-mixing of the gas in the gas-liquid mixing area. The high-speed rotating liquid and the high-speed rotating gas continue to mix to reach a micron-level atomization state. The atomized liquid and the gas reach micron-level contact and mixing, and the pollutants in the gas phase are captured by the liquid phase droplets.

[0099] The fully mixed gas-liquid mixed medium enters the gas-liquid separation area of ​​the gas-liquid separation chamber 7. In the gas-liquid separation area, the flow area is increased and the flow velocity is reduced to 1-2 m / s to achieve initial gas-liquid separation. A gas-liquid separator is set in the gas channel at the gas outlet position. A primary centrifugal separator is used to condense the droplets. A secondary baffle separation and a wire mesh demister are further used for separation. Separators at all levels are organically combined. A droplet collecting plate is set axially in the centrifugal gas-liquid separator, and the collecting plate is set at a rising angle of 20° to 60° to reduce the smoke resistance.

[0100] The equipment of this embodiment can be arranged in a wet flue gas purification device without increasing the space of the original purification device. The air intake side is arranged on the four sides of the outer side of the device, and the area of ​​the air intake channel is the largest, which effectively reduces the pressure drop on the flue gas side and does not increase the flue gas resistance of the original tower.

[0101] The equipment of this embodiment can be set to be multi-stage series connection, and the number of series connection stages is 1 to 3. When the number of stages is increased, the investment increases and the effect is not good.

[0102] The equipment of this embodiment can be arranged into multiple groups in parallel. The number of parallel units is calculated according to the amount of smoke. The parallel arrangement methods are plane parallel and vertical parallel.

[0103] The device of this embodiment is provided with a gas-liquid separation chamber, in which gas-liquid separation is performed. When multiple stages are connected in series, a gas-liquid separation chamber is provided between two stages.

[0104] Working principle:

[0105] The equipment of this embodiment is installed in a scrubber housing 20, and there are four gas phase distribution chambers 21 around the equipment. The high-pressure liquid enters the liquid distribution pipe 1 through the high-pressure liquid inlet 19 after being pressurized by the pump, and enters the dynamic pressure conversion structure 2 in the middle area of ​​the equipment through the liquid distribution pipe 1. The outlet of the dynamic pressure conversion structure 2 is a multi-porous spiral nozzle, which ensures that the liquid is in a spiral forward state after passing through the pressure end and enters the gas-liquid mixing chamber 6.

[0106] A smoke inlet hole with a diameter of 30 to 50 mm is opened on the side of the front area of ​​the dynamic pressure conversion structure 2 to form a smoke inlet structure 3. A guide thread is arranged in the hole. The smoke enters the device through the smoke inlet hole on the device and rotates into the gas-liquid mixing chamber 6 of the device through the guide thread.

[0107] The high-speed rotating liquid and high-speed rotating gas are strongly mixed in the gas-liquid mixing chamber. As the liquid pressure decreases, a vacuum area is formed on the liquid surface, and the liquid is partially vaporized to form droplets that contact the pollutants in the gas phase at the micron-level interface. After mixing, the kinetic energy of the liquid decays, generating a low-pressure area.

[0108] The gas and liquid continue to pass through the gas-liquid mixing chamber 6. A gas-liquid guiding back-mixing guide wing is arranged in the gas-liquid mixing chamber 6 to realize multiple back-mixing of the gas in the gas-liquid mixing chamber 6. The high-speed rotating liquid and the high-speed rotating gas continue to mix and reach a micron-level atomization state. The liquid in the atomized state and the gas reach micron-level contact and mixing, and the pollutants in the gas phase are captured by the liquid phase droplets.

[0109] The fully mixed gas-liquid mixed medium enters the gas-liquid separation chamber 7, and in the gas-liquid separation chamber 7, the initial separation of gas and liquid is achieved by increasing the flow area and reducing the flow rate.

[0110] The gas outlet 17 is connected to the gas discharge channel 18, and a demister is arranged in the gas discharge channel 18. The centrifugal gas-liquid separator 9 is used as the primary demister structure, the baffle demister is used as the secondary demister structure, and the wire mesh demister is used as the tertiary demister structure, and the three are organically combined. The centrifugal gas-liquid separator 9 is axially provided with a droplet collecting plate 11 to further reduce the droplet content entering the baffle.

[0111] The equipment of this embodiment is used. The overall equipment is designed to be arranged in a single layer or multiple layers according to the flue gas flow rate, and the number of internal units is designed according to the flue gas volume. The liquid injection is used as the power to inhale the flue gas, and the gas and liquid are mixed in the mixing chamber. The pressure on the gas side does not decrease. The power source is the liquid pressurization that is easily obtained, which effectively reduces the pressure drop on the flue gas side and does not increase the flue gas resistance of the original tower. The centrifugal gas-liquid separator assembly used in this embodiment can be arranged outside the washing tower.

[0112] The present invention adopts the injection liquid as the power, sucks in the smoke, mixes the gas and liquid in the mixing chamber, the pressure on the gas side does not decrease, and the power source is the easily available pressurized liquid.

[0113] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0114] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An integrated device for removing, capturing and separating particles, characterized in that: include: A liquid distribution pipe (1), a particle capture assembly (16), and a gas-liquid separation chamber (7); The particle capture assembly (16) comprises a dynamic pressure conversion structure (2), a smoke inhalation structure (3) and a gas-liquid mixing chamber (6); the liquid distribution pipe (1) is connected to the inlet of the gas-liquid mixing chamber (6) through the dynamic pressure conversion structure (2); the liquid distribution pipe (1) is used to pass high-pressure liquid; the dynamic pressure conversion structure (2) is used to spray the high-pressure liquid into the gas-liquid mixing chamber (6) to form sprayed liquid; The smoke inhalation structure (3) is connected to the inlet of the gas-liquid mixing chamber (6), and the smoke inhalation structure (3) uses the sprayed liquid in the gas-liquid mixing chamber (6) as a driving force to inhale smoke into the gas-liquid mixing chamber (6); The outlet of the gas-liquid mixing chamber (6) is connected to the inlet of the gas-liquid separation chamber (7), and the gas-liquid separation chamber (7) is provided with a liquid outlet (8) and a gas outlet (17).

2. The integrated device for removing, capturing and separating particulate matter according to claim 1, characterized in that: The dynamic pressure conversion structure (2) comprises a liquid channel inner wall (201), a liquid channel outer wall (202), a liquid guide port (203) and a liquid guide fin (204); The liquid channel outer wall (202) is arranged around the liquid channel inner wall (201), and a liquid channel is formed between the liquid channel outer wall (202) and the liquid channel inner wall (201); The liquid guide port (203) is provided on the outer wall (202) of the liquid channel, and the liquid guide fin (204) is provided at the position of the liquid guide port (203); The liquid guide port (203) and the liquid guide fin (204) form a spiral liquid inlet structure, and the high-pressure liquid enters the liquid channel through the spiral liquid inlet structure; High-pressure liquid is sprayed into the gas-liquid mixing chamber (6) through the liquid channel to form sprayed liquid, and enters the gas-liquid mixing chamber (6) in a spirally rotating forward state.

3. The integrated device for removing, capturing and separating particles according to claim 2 is characterized in that: The smoke inhalation structure (3) comprises a gas channel outer wall (301), a gas channel inner wall (302), a gas guide port (303) and a gas guide vane (304); The gas channel outer wall (301) is arranged around the gas channel inner wall (302), the gas channel inner wall (302) is arranged around the liquid channel outer wall (202), and a gas channel is formed between the gas channel inner wall (302) and the liquid channel outer wall (202); The gas guide port (303) is provided on the inner wall (302) of the gas channel, and the gas guide fin (304) is provided at the position of the gas guide port (303); The gas guide port (303) and the gas guide fin (304) form a spiral air intake structure, and smoke enters the gas channel through the spiral air intake structure; The smoke enters the gas-liquid mixing chamber (6) through the gas passage and enters the gas-liquid mixing chamber (6) in a spirally rotating forward state.

4. The integrated device for removing, capturing and separating particles according to claim 3 is characterized in that: A gas-liquid guiding back-mixing guide wing (4) is arranged in the gas-liquid mixing chamber (6), and the gas-liquid guiding back-mixing guide wing (4) is used for guiding the reflux of smoke and sprayed liquid.

5. The integrated device for removing, capturing and separating particles according to claim 4 is characterized in that: The gas-liquid mixing chamber (6) comprises a first chamber (601) and a second chamber (602); The dynamic pressure conversion structure (2) is connected to the first chamber (601), and the first chamber (601) is connected to the second chamber (602) via a gas-liquid rotating nozzle (5); The gas-liquid guiding back-mixing guide wing (4) is arranged in the first chamber (601) and is arranged adjacent to the gas-liquid rotating nozzle (5); The spray liquid and smoke are mixed in the first chamber (601) and then sprayed into the second chamber (602) through the gas-liquid rotating nozzle (5); The flow cross section in the second chamber (602) is larger than the flow cross section in the first chamber (601), and the flow cross section in the gas-liquid separation chamber (7) is larger than the flow cross section in the second chamber (602).

6. The integrated device for removing, capturing and separating particles according to claim 1, characterized in that: Also includes a demisting assembly (15); The demister assembly (15) is connected to the gas outlet (17); the demister assembly (15) comprises a gas discharge channel (18), and the upper and lower ends of the gas discharge channel (18) are respectively provided with a gas discharge port (14) and a liquid discharge port (10); The gas discharge channel (18) is provided with a wire mesh demister (13), a baffle demister (12) and a centrifugal gas-liquid separator (9) in order from top to bottom; The baffle demister (12) is located above the gas outlet (17), and the centrifugal gas-liquid separator (9) is located below the gas outlet (17).

7. The integrated device for removing, capturing and separating particles according to claim 6 is characterized in that: A droplet collecting plate (11) is arranged on the centrifugal gas-liquid separator (9) along its axial direction. The droplet collecting plate (11) is arranged to be inclined upward, and the angle between the plane where the droplet collecting plate (11) is located and the horizontal plane is 20° to 60°.

8. The integrated device for removing, capturing and separating particles according to claim 3 is characterized in that: The spiral inclination angle of the liquid guide fin (204) relative to the outer wall (202) of the liquid channel is less than 30°; The spiral inclination angle of the gas guide vane (304) relative to the inner wall (302) of the gas channel is less than 30 degrees.

9. The integrated device for removing, capturing and separating particles according to claim 1, characterized in that: The liquid distribution pipe (1), the particle capture assembly (16) and the gas-liquid separation chamber (7) constitute a removal, capture and separation module (22); The removal, capture and separation modules (22) are provided in plurality, and the plurality of the removal, capture and separation modules (22) are connected in series; The gas outlet (17) of the first removal, capture and separation module (22) is connected to the flue gas suction structure (3) of the second removal, capture and separation module (22), and the gas outlet (17) of the last removal, capture and separation module (22) is connected to the defogger assembly (15).

10. The integrated device for removing, capturing and separating particles according to claim 1, characterized in that: The particle capture assembly (16) is provided in plurality; The plurality of particle capture assemblies (16) are connected in parallel to the gas-liquid separation chamber (7), and the gas-liquid mixing chambers (6) of the plurality of particle capture assemblies (16) are all connected to the gas-liquid separation chamber (7).

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