TW201934191A - Granular moving bed and method for improving the filtering effect using thereof - Google Patents

Abstract

A granular moving bed comprises a granular moving channel module, and an inlet module. The granular moving channel allows the granule materials flowing therethrough and the inlet module allows a contaminated gas flowing therethrough and passing through the granular moving channel module whereby the contaminated gas is filtered by the granule materials and become a filtered gas flowing out therefrom. The granular moving bed is characterized in that further comprises a heating module arranged inside the granular moving channel module, and a controller is utilized to control the heater for heating the granule materials thereby making a temperature of the granules is equal to a temperature a temperature of the contaminated gas or have a temperature difference from the temperature of the contaminated gas.

Description

Mobile particle bed and mobile particle bed control method for improving filtration efficiency

The invention relates to a mobile particle bed, in particular to a mobile particle bed for controlling the temperature of the air stream to be filtered and the temperature of the particulate material, and a mobile particle bed control method for improving filtration efficiency.

In recent years, energy issues have attracted the attention of the public. In terms of national energy development policies, the goal of energy development is to establish non-nuclear homes. In order to achieve this goal, many alternative energy sources have gradually increased their weight, and have played the role of power supply for China's economic development. Among various non-nuclear power generation methods, coal-fired power plants play an important role in power generation. However, because of burning coal, it will produce a gas containing a large amount of harmful substances, which contains a large amount of particulate matter, sulfide, nitride or other pollutants. If the harmful gas is discharged without treatment, Will have a significant impact on the human environment.

In addition to the waste gas from coal-fired power generation, waste incineration plants also generate waste gas when processing waste incineration. The main harmful components in the waste gas are soot, sulfide (SOx), HCl, nitrogen oxides (NOx), ammonia. (NH3), cyanide (HCN), hydrocarbons (HC), organic acids, acetaldehyde, heavy metals and dioxin.

Regardless of industrial waste gas generated by power generation, waste incineration or other related industries (such as chemical plants, semiconductor plants, steel plants or paper mills, etc.), if no effective measures are taken, it will often cause great pollution to the air environment. All major industrial countries have formulated strict emission standards for hazardous substances, and in order to respond to the emission standards, they have also invested a lot of research and development resources to develop methods and technologies that can effectively deal with hazardous substances in exhaust gas.

Among them, in the conventional technology, as shown in FIG. 1, the figure is a schematic diagram of a conventional moving particle bed. The conventional mobile particle bed 1 has a filter material flow channel 11, an air inlet unit 12 and an air outlet unit 13. The filter material 111 is filled into the filter material flow path 11 from the introduction port 112 at a proper speed, and is moved out of the filter material flow path 11 from the discharge port 113. The air stream to be filtered is sent to one side of the filter material flow path 11 by the air intake unit 12, wherein the dust particles and pollutants in the air stream to be filtered will be filtered or adsorbed by the filter material 111, and the filter material 111 will pass through the filter material 111 at an appropriate speed. Move up and down until the filter material 111 is discharged from the discharge port 113. The filtered clean gas will flow from the other side of the filter material flow path 11 to the air outlet unit 13 and be discharged from the air outlet unit 13 to the outside.

Conventional particle filter materials will be raised to the working temperature by heat conduction and convection. If the temperature of the particle filter material in the filtering process is different from the dirty gas with dust at the air inlet, it will cause the thermal expansion and contraction of the filter material pores. , Which in turn affects the filtration efficiency and effectiveness of the filtration system. To sum up, there is a need for a mobile particle bed and a mobile particle bed control method for improving filtration efficiency to solve the shortcomings of conventional technology.

According to experiments, conventional mobile filter media will be raised to the working temperature by heat conduction and convection. If the filter media is at a different temperature from the dirty gas with dust in the air inlet during the filtering process, it will cause the porosity of the filter surface. Thermal expansion and contraction will affect the filtration efficiency of the system. In order to solve this problem, the present invention provides a mobile particle bed and a mobile particle bed control method for improving filtration efficiency, which control the temperature of the air stream to be filtered at the inlet and the temperature of the particulate material to make the temperature appropriate or similar, and further It can avoid the thermal expansion and contraction of the pores of the filter material and affect the filtration efficiency of the mobile particle bed.

In one embodiment, the present invention provides a mobile particle bed control method for improving filtration efficiency, which includes the following steps: First, a mobile particle bed is provided, which includes a particle flow channel module and an air inlet. A pipe module, an air outlet pipe module, a heating module and a control unit; the particle flow channel module has a particle material inlet and a particle material outlet, and the air inlet pipe module is disposed on the particle flow One side of the channel module, the air outlet pipe module is disposed on the other side of the particle flow channel module, the heating module is disposed in the particle flow channel module, and the control unit and the heating module are electrically connection. Next, a granular material is allowed to enter through the granular material inlet and is discharged from the granular material outlet. Then, a gas stream to be filtered is caused to enter the particle flow channel module from the air inlet pipe module, and then discharged through the air outlet pipe module. Finally, the control unit controls the heating module to heat the particulate material so that the temperature of the particulate material is appropriate or similar to the temperature of the air stream to be filtered.

In one embodiment, the control unit is configured to control the airflow according to the temperature change of the airflow to and from the granular flow channel module or the temperature change of the granular material at the granular material inlet and the granular material outlet. The heating module heats the particulate material.

Wherein, according to the temperature change of the air flow to be filtered in and out of the granular flow channel module or the granular material, the steps further include the following steps: First, a first temperature sensor is set in the intake duct module to measure the entrance. A first temperature of the air flow to be filtered in the particle flow channel module. Then, a second temperature sensor is set in the air outlet pipe module. Then, a filtered gas is formed after the airflow to be filtered passes through the particle flow channel module, so that the second temperature sensor measures a second temperature of the filtered gas. Finally, the control unit controls the heating module to make the second temperature equal to the first temperature, or to maintain a proper temperature difference between the second temperature and the first temperature under special requirements to apply to other harsh environment industries Process and requirements.

Wherein, according to the temperature change of the particulate material at the particulate material introduction port and the particulate material discharge port, the following steps are further included: First, a first temperature sensor is set at the particulate material introduction port to measure entering the particulate flow. A first temperature of the particulate material in front of the module. Next, a second temperature sensor is provided at the particulate material discharge port. Then, the filtered airflow passes through the particle flow channel module to obtain a filtered clean airflow, so that the second temperature sensor measures a second temperature of the particulate material discharged from the particulate material discharge port. Finally, the control unit controls the heating module to make the second temperature equal to the first temperature, or to maintain a proper temperature difference between the second temperature and the first temperature under special requirements to apply to other harsh industrial processes And demand.

In one embodiment, the present invention provides a mobile particle bed, which includes a particle flow channel module, an intake duct module, and an air outlet duct module. The particle flow channel module has a granular material inlet and A particulate material discharge port, a particulate material entering through the particulate material introduction port and being discharged by the particulate material discharge port, the intake duct module is disposed on one side of the particulate flow channel module, and an air stream to be filtered is passed through the inlet. An air duct module enters the particle flow path module to form a filtered clean air flow. The air outlet duct module is disposed on the other side of the particle flow path module to discharge the filtered clean air flow. It is characterized in that the mobile particle bed further has a heating module and a control unit. The heating module is disposed in the particle flow channel module. The control unit controls the heating module to heat the particulate material so that the temperature of the particulate material is equal to the temperature of the airflow to be filtered or a temperature difference between the temperature of the airflow to be filtered and the temperature of the airflow to be filtered.

In one embodiment, the mobile particle bed system further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed on the air inlet duct module to measure a first temperature of the airflow to be filtered before entering the particle flow channel module, and the first temperature is equal to or similar to the particulate material. The temperature of the inlet of the particulate material. The second temperature sensor is disposed in the air outlet pipe module to sense the second temperature of the filtered clean air stream after the air stream to be filtered passes through the particle flow channel module. The control unit is electrically connected to the heating module, the first and second sensing modules, and the control unit is used to control the heating module to make the second temperature equal to the first temperature or to the first temperature. The first temperature has a temperature difference.

In one embodiment, the mobile particle bed further includes: a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed at the particulate material inlet. The first temperature sensor is used to sense a first temperature of the particulate material passing through the particulate material inlet. The first temperature is equal to or Approximate the temperature of the air stream to be filtered. The second temperature sensor is disposed at the particulate material discharge port to sense a second temperature of the particulate material passing through the particulate material discharge port. The control unit is electrically connected to the heating module, the first and second sensing modules, and the control unit is used to control the heating module to make the second temperature equal to the first temperature or to the first temperature. The first temperature has a temperature difference.

Various exemplary embodiments may be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. However, the inventive concept may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. Similar numbers always indicate similar components. In the following, the mobile particle bed and the mobile particle bed control method for improving filtration efficiency will be described with various embodiments and drawings, however, the following embodiments are not intended to limit the present invention.

Please refer to FIG. 2A and FIG. 2B, which are schematic diagrams of an embodiment of a mobile particle bed according to the present invention. The mobile particle bed 2 includes a particle flow channel module 20, an air inlet duct module 21 and an air outlet duct module 22. The granular flow channel module 20 has a granular material inlet 200 and a granular material outlet 201. The particulate flow channel module 20 can provide a particulate material 90 to enter through the particulate material introduction port 200 and be discharged from the particulate material discharge port 201. The particulate material 90 may be a filter material, an adsorption material, a catalyst material, or at least two combinations thereof. The granular flow channel module 20 is composed of a plurality of layers of sub flow channels 202. There is a gap D between two adjacent sub flow channels 202, and at least one flow distribution element 203 is used to flow the granular material 90. Each of the sub-flow channels 202 and the shunt element 203 is a conventional technology, and details are not described herein.

The intake duct module 21 is disposed on one side of the particle flow channel module 20. The intake duct module 21 has a first-stage path 210 and a plurality of fluid parameter sensors, including a pressure sensor 211 and / Or speed sensor 212. The flow path 210 is used for providing the airflow 91 to be filtered. In one embodiment, a duct connection housing 23 is further provided between the intake duct module 21 and the particle flow channel module 20, which is connected to one end of the flow path 210 and the exhaust duct module 22, The air inlet duct module 21 is hermetically connected to the particle flow channel module 20. In this embodiment, a region inside the pipe connection housing 23 and located outside the end of the flow path 210 further includes a plurality of deflectors 230-232. In one embodiment, the plurality of deflectors further includes a first deflector 230, a second deflector 231, and a third deflector 232. A horizontal included angle of the first deflector 230 is between 0 ° and 50 °. The second deflector 231 is disposed on one side of the first deflector 230. The second deflector 231 has a horizontal included angle between 10 ° and 80 °. The third deflector 232 is disposed on the other side of the first deflector 230 and corresponds to the second deflector 231. The third deflector 232 has a range of -10 ° to- Horizontal angle of 80 °. The plurality of deflectors 230 to 232 are used to divide the airflow to be filtered 91 into a plurality of sub-airflows 910 so that the airflow to be filtered 91 can pass through the particle flow channel module 20 uniformly.

The airflow to be filtered 91 enters the particle flow channel module 20 from the air inlet duct module 21 and is filtered after passing through the particulate material 90 to form a filtered clean airflow 92. The air outlet pipe module 22 is disposed on the other side of the particle flow channel module 20 and corresponds to the air inlet pipe module 21 to discharge the filtered clean airflow 92. In this embodiment, the air outlet pipe module 22 has an air outlet pipe 220 connected to the pipe connection housing 23. The air outlet pipe module 22 further includes a pressure sensor 221 and / or a speed sensor 222 for measuring the pressure and speed of the clean airflow 92.

The mobile particle bed 2 further has a temperature sensing module 24, a heating module 25 and a control unit 26. In this embodiment, the temperature sensing module 24 further includes a first temperature sensor 240 and a second temperature sensor 241. The first temperature sensor 240 is disposed in the flow path 210 of the intake duct module 21 to measure a first temperature of the airflow 91 to be filtered before entering the particle flow channel module 20, and the first temperature A temperature is equal to or similar to the temperature of the particulate material 90 at the particulate material introduction port 200. The second temperature sensor 241 is disposed on the air outlet pipe 220 of the air outlet pipe module 22 to sense the second temperature of the clean airflow 92. In addition, a third temperature sensor 242 is located at the position of the particulate material introduction port 200 of the particulate flow channel module 20 to sense the temperature of the particulate material 90.

It should be noted that the arrangement of the temperature sensing module 24 is not limited to the example shown in FIGS. 2A and 2B. For example, in another embodiment, as shown in FIG. 3, the first temperature sensor 243 and the second temperature sensor 244 of the temperature sensing module 24 of this embodiment are disposed in the particle flow channel mold. The group 20 is mainly composed of the first temperature sensor 243 and the first temperature sensor 243. The first temperature sensor 243 is used to detect the particulate material passing through the particulate material inlet 200. A first temperature of 90, the first temperature is equal to or similar to the temperature of the airflow 91 to be filtered. The second temperature sensor 244 is disposed at the particulate material discharge port 201 to sense a second temperature of the particulate material passing through the particulate material discharge port 201. In addition, a third temperature sensor 245 is located at a position of the flow path 210 near the particle flow path module 20 to sense the temperature of the airflow 91 to be filtered.

Returning to FIG. 2A and FIG. 2B, the heating module 25 is disposed in the particle flow channel module 20 to heat the particulate material 90. In this embodiment, the heating module 25 includes a plurality of first heaters 250 and a plurality of second heaters 251. The plurality of first heaters 250 are disposed near the interior of the particulate material inlet 200. In one embodiment, the first heaters 250 can be disposed in a region around the interior of the particulate material inlet 200. The plurality of second heaters 251 are disposed in the inner space formed by the plurality of sub-flow channels 202. In one embodiment, they can be looped in the inner space formed by the plurality of sub-flow channels 202. The operating temperature of the granular material is determined according to the material and usage requirements of the granular material, and there is no certain limit. For example, in one embodiment, the granular material is a material containing quartz sand, so its operating temperature is 25 ° C to room temperature. Between 1100 ° C.

In addition, it should be noted that, in addition to the method of FIG. 2B, in another embodiment, the heating module is shown in FIG. 4, which is a schematic diagram of another embodiment of the heating module 25 of the present invention. In order to improve the heating effect, there is a feed hopper 27 above the granular material introduction port 200 in this embodiment, and at least one third heater 252 is also provided inside the feed hopper 27 to heat the pellet 90 in advance. In addition, although FIG. 4 is further provided with a third heater 252 above the embodiment of FIG. 3, it is not limited to the embodiment of FIG. 3. For example, the third heater may be added to the embodiment of FIGS. 2A and 2B.

Returning to FIG. 2A and FIG. 2B, the control unit 26 is in telecommunication connection with the temperature sensing module 24 and the heating module 25. The control unit 26 obtains information about the filter to be filtered according to the temperature sensing module 24. The temperature of the airflow 91 and the clean airflow 92 controls the heating module 25 to heat the particulate material 90 so that the temperature of the particulate material 90 is equal to the temperature of the airflow 91 to be filtered or a temperature between the airflow 91 and the temperature of the airflow 91 to be filtered. Temperature difference to maintain certain filtration effect and operation stability under other harsh environments. In one embodiment, the temperature difference is ± 10 ° C.

Please refer to FIG. 5A, which is a schematic flowchart of an embodiment of a mobile particle bed control method for improving filtration efficiency according to the present invention. The control method includes the following steps. First, step 30 is performed to provide a mobile particle bed, which may be a particle bed structure as shown in FIG. 2A or FIG. 2B, or only a particle bed structure as shown in FIG. 3 or FIG. The structure is as described above, and will not be repeated here. The movable particle bed 2 in this embodiment is described with the structure of FIGS. 2A and 2B. Next, step 31 is performed to allow a particulate material 90 to flow through the particulate material introduction port 200 and be discharged from the particulate material discharge port 201. Then, step 32 is performed, so that an airflow to be filtered 91 enters the particle flow path module 20 from the air inlet duct module 21, and particles, viscous, harmful and toxic substances contained in the airflow to be filtered 91 are particles. After the material 90 is filtered off, the filtered clean air stream 92 is obtained, and then discharged through the air outlet pipe module 22. Then, in step 33, the control unit 26 controls the heating module 25 to heat the particulate material 90, so that the temperature of the particulate material 90 is equal to or between the temperature of the airflow 91 to be filtered and the temperature of the airflow 91 to be filtered. Has a temperature difference for other filtration environments to maintain a certain filtration effect and operational stability. In one embodiment, the temperature difference is ± 10 ° C.

In step 33, the control unit 26 is based on the temperature change of the airflow 91 to be filtered in and out of the particulate flow channel module 20 or the temperature of the particulate material 90 at the particulate material inlet 200 and the particulate material outlet 201. Change to control the heating module 25 to heat the particulate material, so that the temperature of the particulate material 90 can be equal to or similar to the temperature of the air stream 91 to be filtered, so as to prevent the porosity of the particulate material from changing due to thermal expansion and contraction. The efficiency of the pollutants, impurities or toxic substances of the air stream to be filtered. As shown in FIG. 5B, in this embodiment, because the structure of FIG. 2A and FIG. 2B is adopted, in step 33, the step of changing the temperature of the airflow 91 to be filtered in and out of the particle flow channel module 20 further includes In step 330, a first temperature sensor 240 is provided in the intake duct module 21 to measure a first temperature of the airflow 91 to be filtered entering the particle flow channel module 20. The first temperature is equal to or similar to the temperature of the particulate material 90 at the particulate material inlet 200. It should be noted that the temperature of the particulate material 90 at the particulate material introduction port 200 can be sensed by a third temperature sensor 242 provided at a specific position of the particulate material introduction port 200, and is set in the control unit 26. There is a preset temperature value, which is 500 ° C in this embodiment. Therefore, the control unit 26 can control the operation of the first heater 250 to supply the thermal energy of the particulate material 90 so that the temperature of the particulate material 900 at the particulate material inlet 200 can be controlled at 500 ° C. In addition, it is to be noted that a feeding hopper 27 having a third heater 252 as shown in FIG. 4 can be further provided on the movable particle bed shown in FIGS. 2A and 2B, and can be operated together with the first heater 250 to control the entry of particles. Temperature of the particulate material 90 of the material introduction port 200.

Then, step 331 is performed to measure the second temperature of one of the clean air flows 92 by the second temperature sensor 241 disposed in the air outlet pipe module 220. Then, step 332 is performed. The control unit 26 controls the heating module 25 so that the second temperature is equal to or similar to the first temperature. In step 332, the control unit 26 determines the amount of thermal energy of the particulate material 90 based on the temperature of the clean air stream 92 at the outlet. If the temperature of the clean airflow 92 is substantially lower than the temperature of the airflow 91 to be filtered, it means that the thermal energy of the airflow 91 to be filtered is largely absorbed by the particulate material 90. In this way, the ability and efficiency of the filter material to adsorb or filter the air stream to be filtered will be reduced. Therefore, the control unit 26 controls the heating module 25 to heat the particulate material 90 so that the temperature of the air stream 91 to be filtered does not have an excessive temperature difference from the clean air stream 92 In the state, when the temperature of the clean air stream 92 is close to the temperature of the air stream 91 to be filtered, the thermal energy of the representative gas is not absorbed by the particulate material 90, and the thermal expansion and contraction of the porosity of the filtering surface of the particulate material 90 can be prevented from affecting the mobile type. Filtration efficiency of the particle bed 2.

Please refer to FIG. 5C, which is a schematic flowchart of another embodiment of a temperature control method for a mobile particle bed control method according to the present invention. The process of this embodiment is based on the temperature control method of the embodiment of FIG. 3, that is, according to the temperature change of the particulate material at the particulate material inlet and the particulate material discharge port, and it further includes: The following steps: First, in step 330a, a first temperature sensor 243 provided at the particulate material inlet 200 measures a first temperature of the particulate material 90 before entering the particulate flow channel module 20. After the mobile particulate bed 2 is operated to form a clean air stream 92 after the air stream to be filtered 91 passes through the particle flow channel module 20, step 331a is performed to enable the second temperature sensor 244 to measure the particulate material discharge port 201 A second temperature of the discharged particulate material 90. Finally, step 332a is performed to enable the control unit to control the heating module 25 so that the second temperature is equal to or similar to the first temperature. In step 332a, the control unit 26 determines the amount of thermal energy of the particulate material 90 based on the temperature of the particulate material 90 of the discharge port 201. If the temperature of the particulate material 90 at the discharge port 201 is substantially lower than the temperature of the particulate material at the introduction port 200, it means that when the particulate material 90 is in contact with the air stream 91 to be filtered, the thermal energy of the particulate material 90 is largely absorbed by the air stream 91 to be filtered. In this way, the ability and efficiency of the filter material to adsorb or filter the air stream to be filtered will be reduced. Therefore, the control unit 26 controls the heating module 25 to heat the particulate material 90 so that the temperature of the air stream 91 to be filtered and the temperature of the particulate material at the inlet 200 There is no excessive temperature difference state. When the temperature of the particulate material 90 at the inlet 200 is close to the temperature of the particulate material 90 at the discharge port 201, the thermal energy of the representative gas is not absorbed by the particulate material 90, and the filtering surface of the particulate material 90 can be avoided. The thermal expansion and contraction of the porosity affect the filtration efficiency of the mobile particle bed 2.

Next, the principle that the temperature of the particulate material 90 and the airflow 91 to be filtered 91 of the present invention are the same or similar can be avoided to prevent the filter efficiency from being deteriorated. Please refer to FIG. 6. In FIG. 6 (a), when the granular material 90 has no thermal expansion and contraction problems, the gap 900 between the particles of the granular material 90 can maintain a specific width. When the granular material 90 expands, as shown in FIG. 6 (b), the gap 900 between the granular materials 90 becomes too small, which will affect the contact effect between the airflow to be filtered and the granular material 90, and then the filtering efficiency. Similarly, when the granular material 90 shrinks, as shown in FIG. 6 (c), the gap 900 between the granular materials 90 becomes too large, because the gap is too large, which will affect the contact effect between the airflow to be filtered and the granular material 90, so that The gas in some areas cannot be contacted with the particulate material 90, thereby affecting the filtration efficiency. Since the thermal expansion and contraction of the particulate material will affect the filtering effect, the temperature of the air stream to be filtered at the inlet and the temperature of the particulate material are controlled by the present invention so that the temperature is the same or similar, thereby avoiding the thermal expansion and cooling of the porosity of the filtering surface. Shrinkage and affect the filtration efficiency of the mobile particle bed.

In addition, as shown in FIG. 7A and FIG. 7B, this figure is a schematic diagram showing the relationship between the particulate material flow rate and the airflow to be filtered in the present invention. In Figure 7A, it can be seen that under the control of the airflow to be filtered at 30 cm / sec and the temperature of the airflow to be filtered and the temperature of the particulate material, the filtration efficiency of different particulate material flows of 300, 350, 450, 550, 600 g / min value. According to the experimental results, it can be seen that when the airflow to be filtered is 30 cm / sec, the optimal filtering efficiency occurs when the particulate material flow rate is 450 g / min. In Figure 7B, it can be seen that under the control of the airflow to be filtered at 20 cm / sec and the temperature of the airflow to be filtered and the temperature of the particulate material, the flow rate of different particulate materials is 120, 240, 360, 480, 560 g / min Filtration efficiency value. According to the experimental results, it can be seen that when the airflow to be filtered is at 20 cm / sec, the optimal filtering efficiency occurs when the particulate material flow rate is at 120 g / min. It can be seen from FIG. 7A and FIG. 7B that as the flow velocity of the airflow to be filtered decreases, the flow rate of the particulate material must also be adjusted downward, so that the particulate material can produce the best filtering effect.

The above description only describes the preferred implementations or embodiments of the technical means adopted by the present invention to solve the problem, and is not intended to limit the scope of patent implementation of the present invention. That is, all changes and modifications that are consistent with the meaning of the scope of patent application of the present invention, or made according to the scope of patent of the present invention, are covered by the scope of patent of the present invention.

2‧‧‧ Mobile particle bed

20‧‧‧ Particle Channel Module

200‧‧‧ particle material inlet

201‧‧‧ particulate material outlet

202‧‧‧ Sub-runner

203‧‧‧ shunt element

21‧‧‧Air inlet duct module

210‧‧‧flow

211‧‧‧Pressure sensor

212‧‧‧speed sensor

22‧‧‧Outlet pipeline module

220‧‧‧Outlet line

 221‧‧‧Pressure sensor

222‧‧‧speed sensor

23‧‧‧pipe connection housing

230‧‧‧First deflector

231‧‧‧Second deflector

232‧‧‧Third deflector

24‧‧‧Temperature Sensing Module

240, 243‧‧‧first temperature sensor

241, 244‧‧‧Second temperature sensor

242, 245‧‧‧ Third temperature sensor

25‧‧‧Heating Module

250‧‧‧The first heater

251‧‧‧Second heater

252‧‧‧Third heater

26‧‧‧Control unit

27‧‧‧feed hopper

90‧‧‧ granular material

900‧‧‧ clearance

91‧‧‧Air to be filtered

910‧‧‧ sub-flow

92‧‧‧ clean air

3‧‧‧Control method

30 ~ 33‧‧‧step

330 ~ 332‧‧‧step

330a ~ 332a‧‧‧step

Figure 1 is a schematic diagram of a conventional moving particle bed. 2A and 2B are schematic diagrams of a mobile particle bed according to the present invention. FIG. 3 is a schematic diagram of another embodiment of a moving particle bed according to the present invention. FIG. 4 is a schematic diagram of another embodiment of a moving particle bed according to the present invention. FIG. 5A is a schematic flowchart of an embodiment of a mobile particle bed control method for improving filtration efficiency according to the present invention. FIG. 5B is a schematic flowchart of an embodiment of a temperature control method for a mobile particle bed control method according to the present invention. FIG. 5C is a schematic flowchart of another embodiment of a temperature control method for a mobile particle bed control method according to the present invention. FIG. 6 is a schematic diagram of the filtering effect of the thermal expansion image of the particulate material due to the temperature difference between the air stream to be filtered and the particulate material. 7A and 7B are schematic diagrams showing the relationship between the particulate material flow rate and the airflow to be filtered according to the present invention.

Claims (10)

A mobile particle bed control method for improving filtration efficiency includes the following steps: A mobile particle bed is provided, which includes a particle flow channel module, an air inlet duct module, an air outlet duct module, a A heating module and a control unit. The granular flow channel module has a granular material inlet and a granular material outlet. The inlet duct module is disposed on one side of the granular flow channel module. The outlet duct mold Group, which is set on the other side of the particle flow channel module, the heating module is set in the particle flow channel module, the control unit is electrically connected to the heating module, and a particle material is introduced through the particle material The inlet enters and is discharged by the particulate material discharge port; the air flow to be filtered enters the particulate flow channel module from the intake duct module, and then is discharged through the outlet duct module; and the control unit controls the heating module to heat For the particulate material, the temperature of the particulate material is equal to the temperature of the air stream to be filtered or has a specific temperature difference from the temperature of the air stream to be filtered. The mobile particle bed control method for improving filtration efficiency according to item 1 of the scope of the patent application, wherein the control unit is based on a temperature change of the air flow to be filtered in and out of the particle flow channel module, or according to the particle material in the The temperature of the particulate material inlet and the particulate material outlet changes to regulate the heating module to heat the particulate material. The mobile particle bed control method for improving filtration efficiency according to item 2 of the scope of patent application, wherein the steps according to the temperature change of the airflow to be filtered into and out of the particle flow channel module or the particulate material further include the following steps: A first temperature sensor is set in the air inlet pipe module to measure a first temperature of the airflow to be filtered entering the particle flow channel module; a second temperature sensor is set in the air outlet pipe module ; Obtaining a filtered clean gas after the airflow to be filtered passes through the particle flow channel module, so that the second temperature sensor measures a second temperature of the filtered gas; and the control unit controls the heating module so that The second temperature is equal to the first temperature or has a specific temperature difference from the first temperature. The mobile particle bed control method for improving filtration efficiency according to item 2 of the scope of the patent application, wherein according to the temperature change of the particulate material at the particulate material inlet and the particulate material outlet, the method further includes the following steps: A temperature sensor at the particulate material inlet to measure a first temperature of the particulate material before entering the particulate flow channel module; setting a second temperature sensor at the particulate material outlet; the to-be-filtered After the airflow passes through the particulate flow channel module, a clean airflow is formed, so that the second temperature sensor measures a second temperature of the particulate material discharged from the particulate material discharge port; and the control unit controls the heating module , Making the second temperature equal to the first temperature or having a temperature difference from the first temperature. A movable granular bed includes a granular flow channel module, an intake duct module, and an outlet duct module. The granular flow channel module has a granular material inlet and a granular material outlet, and a granular material. It enters through the particulate material inlet and is discharged from the particulate material outlet. The intake duct module is disposed on one side of the particulate flow channel module. A gas stream to be filtered enters the particulate flow channel through the intake duct module. Module to form a clean airflow, the air outlet pipe module is disposed on the other side of the particle flow channel module to discharge the clean airflow, and is characterized in that the mobile particle bed further has: a temperature sensing A module for sensing the temperature of the particulate material or the airflow to be filtered and the mirror airflow; a heating module disposed in the particle flow channel module; and a control unit for detecting the temperature The module and the heating module are electrically connected. The control unit controls the heating module to heat the particulate material so that the temperature of the particulate material is equal to the temperature of the air stream to be filtered or the temperature of the air stream to be filtered. Having a degree of temperature difference. According to the movable particle bed described in item 5 of the scope of patent application, wherein the temperature sensing module further includes: a first temperature sensor, which is disposed in the intake duct module to measure the entrance A first temperature of the air stream to be filtered before the particulate flow channel module, the first temperature being equal to the temperature of the particulate material at the particulate material inlet or between the particulate material and the particulate material at the particulate material inlet A temperature difference; a second temperature sensor provided in the air outlet pipe module to sense a second temperature of a filtered gas after the airflow to be filtered passes through the particle flow channel module; A control unit is electrically connected to the heating module, the first and second sensing modules, and the control unit is used to control the heating module so that the second temperature is equal to the first temperature or the first temperature With this temperature difference. According to the movable particle bed described in item 5 of the patent application scope, wherein the temperature sensing module further includes: a first temperature sensor, which is disposed at the particle material introduction port, the first temperature sensor The detector is used to sense a first temperature of the particulate material passing through the particulate material inlet, the first temperature being equal to the temperature of the air stream to be filtered or a temperature difference between the temperature of the air stream to be filtered; a second A temperature sensor is disposed at the particulate material discharge port to sense a second temperature of the particulate material passing through the particulate material discharge port; wherein the control unit, the heating module, the first and The second sensing module is electrically connected, and the control unit is used to control the heating module so that the second temperature is equal to the first temperature or has a temperature difference from the first temperature. According to the movable particle bed described in the first item of the patent application scope, wherein the particle flow channel module further includes a plurality of shunting elements, which are arranged at intervals along the direction of the particle material flow. The movable particle bed according to item 1 of the scope of the patent application, wherein the granular material is a filter material, an adsorption material, a catalyst material, or at least two combinations thereof. The movable particle bed according to item 1 of the scope of patent application, wherein the intake duct module further includes: a first deflector, and a horizontal included angle between 0 ° and 80 °; a second A deflector is disposed on one side of the first deflector, the second deflector has a horizontal included angle between 10 ° and 80 °, and a third deflector is disposed on the first deflector. The other side of a deflector corresponds to the second deflector, and the third deflector has a horizontal included angle between -10 ° and -80 °.