High-efficiency low-resistance multi-stage multifunctional fixed bed flue gas purification integrated device

Abstract

The application discloses a high-efficiency low-resistance multi-stage multifunctional fixed-bed flue gas purification integrated device, and relates to the technical field of flue gas purification.The device comprises a fixing frame and a control module, the middle part of the fixing frame is fixedly connected with a mounting box, the left and right sides of the mounting box are both provided with openings, the inner wall of the mounting box is rotationally connected with two sealing plates through bearings, the two sealing plates are fixedly connected through a connecting frame, a plurality of guide plates are arranged between the two sealing plates, the guide plates are honeycomb guide plates which are sprayed with nano active calcium in channels, the device is provided with a wind speed detection module and a nitrogen detection module, and the input and output states of air flow are linkage controlled by the electric valve and the control module which are arranged in cooperation, the device can realize real-time monitoring and adjustment of flue gas temperature and pollutant concentration, dynamic optimization of purification conditions, and switching of air inlet direction according to purification effect, and has the characteristics of high practicability and stable and efficient flue gas purification.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas purification, in particular to a high-efficiency low-resistance multi-stage multifunctional fixed-bed flue gas purification integrated device. BACKGROUND

[0002] At present, in high-emission industries such as steel, coking, non-ferrous smelting and coal-fired power, flue gas generally contains sulfur dioxide (SO2), nitrogen oxides (NOx) and particulate matter and other pollutants, and industrial enterprises are generally equipped with flue gas desulfurization, denitrification and dust removal devices. The existing flue gas purification technology mainly includes wet desulfurization, dry or semi-dry fixed bed / moving bed system and catalytic reduction denitrification system, etc.

[0003] Among them, the wet desulfurization process has high desulfurization efficiency, but it generally has problems such as serious equipment corrosion, high operation cost, complex wastewater treatment, etc., and is difficult to adapt to high-frequency and high-load operation conditions. The dry fixed bed structure is widely used in small and medium-sized enterprises due to its simple system and no wastewater discharge, but the common structure mostly uses single-stage or series reaction bed, the gas flow path is short, the disturbance degree is low, it is difficult to balance high-efficiency removal and low-energy consumption operation, and the flow guide structure is easy to accumulate dust and block, resulting in increased operation resistance and reduced reagent utilization rate.

[0004] The existing CN114904383A Chinese patent discloses a fixed bed desulfurization system with high-efficiency desulfurizer, which utilizes the fixed bed desulfurization system of the desulfurizer, the desulfurization column of the desulfurization tower applied in the fixed bed desulfurization system is hollowly arranged, the inside is an inner ring purification cavity, and an inner ring partition plate is arranged to divide the inner ring purification cavity into warehouses. Sulfur-containing flue gas can pass through the desulfurizer in the same desulfurization column twice, compared with the traditional horizontal gas inlet desulfurization tower, one desulfurization column is configured, the volume of the single reaction tower is reduced, the flue gas distribution is more uniform, the utilization rate of the desulfurizer is improved, and the overall installation of the desulfurization tower can be realized. However, this system and similar systems lack real-time monitoring and regulation capabilities for flue gas flow state, temperature change and pollutant concentration, and cannot dynamically adjust the reaction process according to the actual working conditions, resulting in large fluctuations in treatment efficiency and insufficient adaptability.

[0005] Therefore, there is an urgent need for a multifunctional fixed-bed flue gas purification device with reasonable structure, high functional integration, low operation resistance and self-adaptive regulation and control capability, which can improve the system operation stability and economy under the premise of meeting the ultra-low emission standard, and realize the coordinated control of pollutants. SUMMARY

[0006] The purpose of the present application is to provide a high-efficiency low-resistance multi-stage multifunctional fixed-bed flue gas purification integrated device to solve the problems raised in the background art.

[0007] In order to solve the above technical problems, the present application provides the following technical scheme: a kind of high efficiency low resistance multi-functional fixed bed flue gas purification integrated device, including fixed frame and control module, the middle part of the fixed frame is fixedly connected with installation box, the left and right sides of the installation box are all provided with opening, the inner wall of the installation box is rotatably connected with two sealing plates by bearing, two The sealing plates are fixedly connected by connecting frame, a plurality of guide vanes are arranged between the two sealing plates, the guide vane is honeycomb guide vane that nano active calcium is sprayed in channel, the both sides of the installation box are fixedly connected with air distribution pipe, the outside of the installation box is provided with reversing mechanism, the upper side of the installation box is provided with rotating mechanism.

[0008] According to the above technical scheme, the inside of the sealing plate is provided with an even number of guide vanes, and the adjacent two guide vanes are symmetrically arranged, the inside of the guide vane is provided with a hexagonal channel inclined by thirty degrees, a plurality of guide vane internal channels are communicated with each other, and the outer wall of the guide vane is fixedly connected with the inner wall of the sealing plate.

[0009] According to the above technical scheme, one end of the air distribution pipe is fixedly connected with the inner wall of the upper opening of the installation box, the other side of the air distribution pipe is provided with a plurality of round holes, and the air distribution pipe is used to uniformly distribute airflow.

[0010] According to the above technical scheme, the reversing mechanism includes first air pipe and second air pipe, one end of the first air pipe and one end of the second air pipe are fixedly connected with the opening of one side of the installation box, the installation box is provided with first air pipe and second air pipe on both sides, the ends of the two first air pipes and the two second air pipes away from the installation box are respectively communicated, and the inside of the first air pipe and the second air pipe is provided with an electric valve, and the electric valve is electrically connected with the control module.

[0011] According to the above technical scheme, two groups of wind speed detection modules and nitrogen detection modules are arranged on the left and right sides of the installation box, and the wind speed detection module and the nitrogen detection module are electrically connected with the control module, and the detection end of the wind speed detection module and the nitrogen detection module is located between the sealing plate and the inner wall of the installation box.

[0012] According to the above technical scheme, the rotating mechanism includes motor, the motor is located on the upper side of the installation box, the outer wall of the installation box is fixedly connected with the outer wall of the motor, the output end of the motor is fixedly connected with gear, the outer wall of the connecting frame is annularly provided with transmission groove, and the side of the gear extends through the installation box and engages with the inner wall of the transmission groove.

[0013] According to the above technical scheme, the motor is electrically connected with the control module, and the motor is used to drive the rotation of the connecting frame, the outer wall of a plurality of guide vanes is formed as up and down protrusions, and the inside of the installation box is filled with heat preservation material outside the guide vane.

[0014] Compared with the prior art, the present application has the beneficial effects that: by setting the flow guide plate and the air distribution pipe, the flue gas can be deflected and disturbed multiple times through the inclined hexagonal channel after entering the installation box, effectively prolonging the gas-solid contact time, and by setting the flow guide plate with a nano active calcium coating, the desulfurization, denitrification and dust removal synergistic reaction can be realized, the pollutant capture efficiency is improved, and the operating resistance is reduced.

[0015] By setting the wind speed detection module and the nitrogen detection module, and cooperating with the electric valve and the control module linkage control airflow input and output state, the flue gas temperature and pollutant concentration can be monitored and adjusted in real time, the purification working condition is dynamically optimized, and the air inlet direction is switched according to the purification effect.

[0016] By setting the motor, gear and transmission groove in the rotating mechanism, the connecting frame is driven to rotate to drive the sealing plate and the flow guide plate to rotate synchronously, cooperating with the convex structure of the flow guide plate and the filling of the heat preservation material, which can disturb the heat preservation layer to prevent settlement, maintain thermal stability and adjust the reaction angle to improve the purification efficiency.

[0017] By setting the reversing mechanism cooperating with the control module to realize the wind direction switching function, and linking the rotating mechanism to periodically drive the flow guide plate to rotate, the condensation by-products attached to the surface of the flow guide plate can be removed and discharged with the airflow, preventing the structure from being blocked and the reagent from being passivated, effectively prolonging the equipment use cycle and maintenance interval. DETAILED DESCRIPTION

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 is a perspective structural schematic diagram of the present application;

[0020] Figure 2 is a split structural schematic diagram of the present application;

[0021] Figure 3 is a partial structural schematic diagram of the present application;

[0022] Figure 4 is a reversing mechanism structural schematic diagram of the present application;

[0023] Figure 5 is an installation box internal structure schematic diagram of the present application;

[0024] Figure 6 is a flow guide plate cross-section structural schematic diagram of the present application;

[0025] In the figure: 1, fixed frame; 2, installation box; 3, sealing plate; 4, connecting frame; 5, guide plate; 6, air distribution pipe; 7, reversing mechanism; 8, rotating mechanism; 701, first air pipe; 702, second air pipe; 703, electric valve; 704, wind speed detection module; 705, nitrogen detection module; 801, motor; 802, gear; 803, transmission groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment one: please refer to Figures 1-5 The present application provides a high-efficiency low-resistance multi-stage multifunctional fixed-bed flue gas purification integrated device, which comprises a fixed frame 1 and a control module matched with the fixed frame 1, and a middle part of the fixed frame 1 is fixedly connected with an installation box 2, left and right sides of the installation box 2 are respectively provided with openings for realizing the inlet and outlet of flue gas, and the inner wall of the installation box 2 is rotatably connected with two sealing plates 3 through a bearing structure, the two sealing plates 3 are fixedly connected through a connecting frame 4 between the two sealing plates 3, forming a closed and stable support framework, a plurality of guide plates 5 are arranged between the two sealing plates 3, the guide plates 5 are honeycomb guide plates with nano active calcium sprayed on the inner wall of the channels, the structure is provided with a hexagonal channel with an inclination angle of thirty degrees, and the channels between the plurality of guide plates 5 are interconnected to form a continuous multi-stage purification path, the outer wall of the guide plate 5 and the inner wall of the sealing plate 3 are stably fixed, forming a closed airflow channel, improving the mass transfer efficiency, and the openings at both ends of the installation box 2 are fixedly connected with air distribution pipes 6, a plurality of round holes are formed in one side of the air distribution pipe 6 for realizing uniform distribution of airflow, the structure forms a synergistic reaction path through the nano active calcium and the inclined hexagonal channel, prolongs the gas-solid contact time to 2.5 seconds of the installation box 2, effectively improves the pollutant adsorption efficiency, and a plurality of devices can be vertically stacked through the connection of the fixed frame 1, and a plurality of installation boxes 2 are connected in series through pipelines to form an adjustable multi-stage purification path.

[0028] After the device is started, the external flue gas is first introduced into the left opening of the installation box 2 by the fan, and the airflow passes through the air distribution pipe 6 before entering the inside of the installation box 2, the air distribution pipe 6 is provided with a plurality of round holes, which can preliminarily rectify and distribute the incoming flow, so that the gas uniformly enters the inside of the installation box main body, after the gas enters the installation box 2, it is guided by a plurality of guide plates 5, the guide plates 5 are honeycomb guide plates with nano active calcium sprayed on the surface of the channels, the guide plates are inclined by 30 degrees and designed as a hexagonal channel, so that the gas continuously impacts the inner wall of the hexagonal channel during the flow process, increasing the gas disturbance and path length, and thereby improving the contact efficiency with the active material;

[0029] The nano active calcium coating is physically adsorbed and chemically reacted with SO2, NOx and particulate matters in the airflow under airflow impact, so that simultaneous desulfurization, denitrification and dust removal are realized. Since the passages between the plurality of guide plates 5 are interconnected, the airflow presents a segmented flow form, the overall path is lengthened, and the contact time is extended to more than 2.5 seconds, which is beneficial to deep capture of the pollutants. The treated gas is uniformly discharged from the other side of the air distribution pipe 6. The whole process has low resistance and high mass transfer efficiency, and can continuously and stably complete efficient purification of the flue gas.

[0030] Embodiment two: please refer to Figures 1-5 On the basis of embodiment one, the application provides the technical scheme that the reversing mechanism 7 is arranged outside the mounting box 2 and is used for adjusting the airflow path and realizing dynamic control of the purification efficiency. One end of the first air pipe 701 and one end of the second air pipe 702 are fixedly connected with the opening at one side of the mounting box 2. The mounting box 2 is provided with the first air pipe 701 and the second air pipe 702 at both sides. The two first air pipes 701 and the two second air pipes 702 are respectively communicated at the ends away from the mounting box 2, so as to form stable airflow passages. The first air pipe 701 and the second air pipe 702 are both provided with electric valves 703 inside. The electric valves 703 are remotely controllable electric valves and are electrically connected to the control module and are used for realizing real-time adjustment of the input and output of the airflow. The mounting box 2 is also provided with two groups of air speed detection modules 704 and nitrogen detection modules 705 at the left and right sides and is respectively used for monitoring the airflow speed and the content of nitrogen oxides passing through the device and is in communication connection with the control module. The detection ends of the air speed detection modules 704 and the nitrogen detection modules 705 are located between the sealing plate 3 and the inner wall of the mounting box 2, that is, in the main path area of the airflow passage. Since the airflow repeatedly collides with the inner wall of the hexagonal passage when passing through the inclined honeycomb structure guide plate 5, especially under the setting of the inclination angle, the collision path presents a left-right alternating turning effect, which effectively increases the gas-solid mixing and the contact area of the reagent, improves the desulfurization and denitrification efficiency, and the control module automatically adjusts the opening and closing state of the electric valve 703 according to the real-time data of the air speed detection module 704 and the nitrogen detection module 705, realizes self-adaptive airflow management, and improves the overall response speed and purification performance of the system.

[0031] In this embodiment, after the device is started, the flue gas still enters the inside of the mounting box 2 through the left air distribution pipe 6 and maintains a uniform flow state under the action of the air distribution pipe. At this time, the first air pipe 701 arranged at the left front part of the mounting box 2 is the air inlet pipe, the electric valve 703 on the first air pipe 701 at the right front part of the mounting box 2 is in the closed state, the second air pipe 702 at the right rear part of the mounting box 2 is the air outlet pipe, and the electric valve 703 on the second air pipe 702 at the left rear part of the mounting box 2 is in the closed state. At this time, the airflow forms a complete passage. When the airflow passes through the inside of the guide plate 5, due to inertia, the windward surface of the inner wall of the guide plate 5 contacts the airflow more and the reaction is faster.

[0032] When the purification effect is reduced due to the adhesion of the inner wall and the advancement of the reaction process, the right nitrogen detection module 705 detects an increase in nitrogen content after the baffle 5 works for a long time, at which time the electric valves 703 on the four first air pipes 701 and the second air pipe 702 are triggered again, forming a flow direction in which the air flow is input from the first air pipe 701 at the front right and output from the second air pipe 702 at the back left, thereby reversing the direction of the air flow through the inside of the baffle 5, changing the windward surface of the baffle 5, and thereby ensuring the purification efficiency and prolonging the service life.

[0033] Example Three: Please refer to Figures 1-6 On the basis of example one and example two, the application provides a technical solution: the rotating mechanism 8 is arranged on the upper side of the mounting box 2 and comprises a motor 801, the motor 801 is a high-torque motor, the outer wall of which is fixedly connected with the outer wall of the mounting box 2, the output end of the motor 801 is connected with a gear 802, the gear 802 is a driving gear, and is annularly engaged in a transmission groove 803 arranged on the outer wall of the connecting frame 4, so as to realize the rotating drive of the connecting frame 4, with the rotation of the connecting frame 4, the connected sealing plate 3 and the baffle 5 rotate synchronously, driving the internal structure of the mounting box 2 to realize the rotating disturbance motion, the outer wall of the baffle 5 is designed as an up-and-down staggered protruding structure, and the rotating action can continuously stir the thermal insulation material filled in the mounting box 2, preventing the thermal insulation filler from settling or caking in the stationary state, thereby stabilizing the distribution of the thermal insulation layer and improving the thermal efficiency, by adjusting the spatial angles of the sealing plate 3, the connecting frame 4 and the plurality of baffles 5, the rotating speed of the baffle 5 can be adjusted to increase or decrease the resistance of the air flow passing through the baffle 5, further improving the residence time and reaction efficiency of the gas in the active area, and realizing the synergistic effect of the desulfurization, denitrification and dust removal functions;

[0034] During the operation of the device, the motor 801 is controlled to start, driving the output gear 802 to rotate, and the gear 802 drives the entire connecting frame 4 structure to rotate through the transmission groove 803 arranged on the outer wall of the connecting frame 4, since the connecting frame 4 is connected with two sealing plates 3 and a plurality of baffles 5, the rotating process synchronously drives the plurality of baffles 5, the connecting frame 4 and the sealing plate 3 to rotate around the central axis;

[0035] This rotating motion not only promotes the continuous change of the angle of the guide structure inside the device, breaks the static flow field distribution and improves the local disturbance intensity, but also adjusts the included angle of the baffle relative to the main air flow direction, thereby dynamically changing the reaction path and contact efficiency;

[0036] In addition, the outer wall of the guide plate 5 is inclined to form a convex structure up and down, and the rotation of the guide plate 5 drives the heat preservation material wrapped outside the guide plate 5 to be stirred uniformly, so that the deposition and hardening of the filler due to long-term static state are prevented, the uniform distribution of the heat preservation layer and the stable heat preservation performance are ensured, the purification efficiency of the equipment is maintained through the rotation and stirring, the reaction activity and system stability of the entire purification process are enhanced, and finally, the airflow after dynamic adjustment is discharged from the outlet, and the entire process realizes the full-chain linkage optimization from temperature control, disturbance, flow guide to reaction efficiency.

[0037] Embodiment four: please refer to Figures 1-6 On the basis of embodiments one, two and three, the application provides a technical solution: after the device runs for a period of time, the control module judges the risk of deposition of condensation by-products on the surface of the internal guide plate 5 according to the cumulative running time or the change of gas flow rate, and then starts the periodic cleaning mechanism. First, the electric valve 703 is controlled to switch the conduction direction of the first air pipe 701 and the second air pipe 702, so that the airflow reverses through the inside of the mounting box 2 in a short time. At the same time, the motor 801 drives the connecting frame 4 to rotate continuously, so that micro-disturbance is generated in the inside of the plurality of guide plates 5.

[0038] Under the combined action of airflow direction switching and rotation disturbance, the scaling and reaction by-products on the surface of the inclined honeycomb guide plate 5 are effectively washed or shaken off and discharged from the system with the airflow, so as to avoid channel blockage or drug failure caused by scaling blockage in long-term use. This function can be automatically executed according to the set period to ensure long-term efficient and stable operation of the system, and significantly prolong the equipment maintenance interval and the service life of the drug.

[0039] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the application, and is not used to limit the application, although the application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A high-efficiency low-resistance multi-stage multi-functional fixed-bed flue gas purification integrated device, comprising a fixing frame (1) and a control module, characterized in that: The middle part of the fixing frame (1) is fixedly connected with a mounting box (2), the left and right sides of the mounting box (2) are both provided with openings, the inner wall of the mounting box (2) is rotatably connected with two sealing plates (3) through bearings, the two sealing plates (3) are fixedly connected through a connecting frame (4), a plurality of guide plates (5) are arranged between the two sealing plates (3), the guide plates (5) are honeycomb guide plates sprayed with nano active calcium in the channels, the two side openings of the mounting box (2) are both fixedly connected with air distribution pipes (6), and the outside of the mounting box (2) is provided with a reversing mechanism (7). The upper side of the mounting box (2) is provided with a rotating mechanism (8), which can drive the internal structure of the mounting box (2) to realize rotary disturbance motion. The reversing mechanism (7) comprises a first air pipe (701) and a second air pipe (702), one end of the first air pipe (701) and one end of the second air pipe (702) are both fixedly connected with the opening on one side of the mounting box (2), the two sides of the mounting box (2) are both provided with the first air pipe (701) and the second air pipe (702), the two ends of the two first air pipes (701) and the two second air pipes (702) are respectively communicated, and the interiors of the first air pipe (701) and the second air pipe (702) are both provided with electric valves (703), and the electric valves (703) are electrically connected with a control module.

2. The integrated device of claim 1, wherein the integrated device is a high-efficiency low-resistance multi-functional fixed-bed flue gas purification integrated device. The inside of the sealing plate (3) is provided with an even number of guide plates (5), and the adjacent two guide plates (5) are symmetrically arranged, the inside of the guide plate (5) is provided with a hexagonal channel inclined by thirty degrees, the inside channels of the plurality of guide plates (5) are interconnected, and the outer wall of the guide plate (5) is fixedly connected with the inner wall of the sealing plate (3).

3. The integrated device of claim 2, wherein the integrated device is a high-efficiency low-resistance multi-functional fixed-bed flue gas purification integrated device. One end of the air distribution pipe (6) is fixedly connected with the inner wall of the upper opening of the mounting box (2), the other side of the air distribution pipe (6) is provided with a plurality of round holes, and the air distribution pipe (6) is used for uniformly distributing airflow.

4. The integrated device of claim 3, wherein the integrated device is a high-efficiency low-resistance multi-functional fixed-bed flue gas purification integrated device. Two groups of wind speed detection modules (704) and nitrogen detection modules (705) are arranged on the left and right sides of the mounting box (2), and the wind speed detection modules (704) and the nitrogen detection modules (705) are electrically connected with a control module, and the detection ends of the wind speed detection modules (704) and the nitrogen detection modules (705) are located between the sealing plate (3) and the inner wall of the mounting box (2).

5. The integrated device of claim 4, wherein the integrated device is a high-efficiency low-resistance multi-functional fixed-bed flue gas purification integrated device. The rotating mechanism (8) comprises a motor (801), the motor (801) is located on the upper side of the mounting box (2), the outer wall of the mounting box (2) is fixedly connected with the outer wall of the motor (801), the output end of the motor (801) is fixedly connected with a gear (802), the outer wall of the connecting frame (4) is annularly provided with a transmission groove (803), one side of the gear (802) extends through the mounting box (2) and is engaged with the inner wall of the transmission groove (803).

6. The integrated device of claim 5, wherein: The motor (801) is electrically connected with the control module, and the motor (801) is used for driving the rotating of the connecting frame (4), the outer wall of the plurality of guide plates (5) is formed with up and down protrusions, and the inside of the mounting box (2) at the outer side of the guide plate (5) is filled with thermal insulation material.

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