A circulating regeneration type activated carbon desulfurization and denitration integrated device

Abstract

The utility model discloses a kind of circulating regeneration type activated carbon desulfurization and denitrification integrated equipment, it includes main body frame, adsorption regeneration device, gas distribution device and circulation driving mechanism. Adsorption regeneration device contains multiple vertically arranged adsorption cylinders, cylinder is filled with activated carbon particles, heating sleeve is provided on outer wall;Gas distribution device realizes flue gas uniform distribution by flow guide plate group and gas distributor;Circulation driving mechanism realizes the recycling of activated carbon particles by screw conveyor;Cooling device is provided on return pipeline.This equipment passes through multilayer filter screen, ash accumulation groove and temperature sensor to optimize adsorption and regeneration process, significantly improve activated carbon utilization, reduce energy consumption and floor area, solve the problem of low regeneration efficiency, high operating cost of traditional equipment, with efficient, energy saving, environmental protection technical advantage and extensive application value.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to an integrated equipment for desulfurization and denitrification using recycled activated carbon. Background Technology

[0002] Sulfur oxides and nitrogen oxides in industrial flue gas are major air pollutants, posing serious threats to the environment and human health. To reduce the emission of these pollutants, activated carbon adsorption technology has been widely used due to its high efficiency and regenerability. In traditional desulfurization and denitrification processes, activated carbon is typically used to adsorb harmful substances in flue gas; however, its adsorption capacity gradually decreases with prolonged use, necessitating regeneration to restore its adsorption performance.

[0003] Current activated carbon regeneration equipment mostly employs high-temperature heating or chemical methods, but these methods often consume a lot of energy and have limited regeneration efficiency. Furthermore, in practical applications, desulfurization and denitrification processes typically use separate equipment, which not only increases equipment investment costs but also occupies significant space. While existing integrated equipment can simplify the process to some extent, the regeneration effect and recycling rate of activated carbon still need improvement in long-term operation. These issues limit its further promotion and application. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated desulfurization and denitrification equipment using circulating regeneration activated carbon, which solves the problems mentioned in the background art.

[0005] This invention is implemented as follows: a circulating regeneration activated carbon desulfurization and denitrification integrated device includes a main frame, an adsorption regeneration device, a gas distribution device, and a circulation drive mechanism. The specific structure is as follows:

[0006] The main frame serves as the supporting foundation for the equipment. An air inlet is located at the top of the main frame, and an air outlet is located at the bottom. The air inlet and outlet are connected by a gas distribution device. The adsorption regeneration unit is located inside the main frame and includes multiple vertically arranged adsorption cylinders filled with activated carbon granules. A heating sleeve is installed on the outer wall of each adsorption cylinder, and the heating sleeve is connected to an external heat source. A feed inlet and a discharge outlet are located at the top and bottom of each adsorption cylinder, respectively. The feed inlet and discharge outlet are connected by a conveying pipe equipped with a screw conveyor.

[0007] The gas distribution device includes a guide plate assembly located inside the main frame. The guide plate assembly consists of multiple inclined guide plates, which form a flue gas channel. The inlet of the flue gas channel is connected to the air inlet, and the outlet is connected to the top of the adsorption cylinder. Each adsorption cylinder has a gas distributor at its bottom, which has multiple evenly distributed jet holes that are connected to the interior of the adsorption cylinder.

[0008] The circulating drive mechanism includes a drive motor, a transmission chain, and multiple driven gears. The drive motor is fixedly mounted on one side of the main frame, and its output shaft is connected to multiple driven gears via the transmission chain. These driven gears mesh with the screw conveyors of the adsorption cylinder. The outlet of the adsorption cylinder is connected to the inlet via a return pipe. A cooling device is installed on the return pipe, comprising a cooling water tank and cooling coils. The cooling coils are arranged around the return pipe and connected to the cooling water tank.

[0009] Preferably, the inner wall of the adsorption cylinder is provided with multiple layers of filter screens, which are arranged at intervals along the height direction of the adsorption cylinder, and the pore size of each layer of filter screens gradually decreases from top to bottom. The edges of the filter screens are fixed to the inner wall of the adsorption cylinder by clips, and a support frame is provided in the central area of ​​the filter screens, which is welded to the inner wall of the adsorption cylinder.

[0010] Preferably, a temperature sensor is installed on the outer wall of the heating sleeve, and the temperature sensor is electrically connected to an external control module. The control module adjusts the heating power of the external heat source according to the detection signal of the temperature sensor. Heat-conducting fins are installed inside the heating sleeve, extending along the length of the heating sleeve and tightly fitting against the outer wall of the adsorption cylinder.

[0011] Preferably, a one-way valve is installed inside the jet orifice of the gas distributor, with the opening direction of the one-way valve facing inward towards the adsorption cylinder. An ash collection trough is provided at the bottom of the gas distributor, communicating with the bottom of the adsorption cylinder. An ash discharge port is provided at the bottom of the ash collection trough, and a manual valve is installed at the ash discharge port.

[0012] Preferably, the cooling device for the return pipe further includes a circulating water pump, the inlet of which is connected to the cooling water tank, and the outlet of which is connected to the cooling coil. The outlet of the cooling coil is connected to the cooling water tank through a return water pipe, and a filter is installed on the return water pipe, the filter being filled with filter media.

[0013] Preferably, a maintenance platform is provided on the top of the main frame, and a transparent observation window is installed on the maintenance platform, which is aligned with the top of the adsorption cylinder. An operation panel is provided on one side of the main frame, and the operation panel is electrically connected to the drive motor, temperature sensor and external heat source.

[0014] The integrated desulfurization and denitrification equipment using circulating regeneration activated carbon provided by this utility model has the following characteristics:

[0015] Inside the adsorption cylinder, the activated carbon particles achieve uniform gas contact through a gas distributor during adsorption, improving adsorption efficiency. A heating sleeve on the outer wall of the adsorption cylinder transfers heat to the activated carbon particles via heat-conducting fins, thus achieving heated regeneration of the activated carbon. A temperature sensor on the heating sleeve monitors temperature changes in real time, and a control module adjusts the heating power to ensure the stability and controllability of the regeneration process.

[0016] The multi-layered filter design inside the adsorption cartridge effectively prevents the loss of activated carbon particles. Furthermore, the use of filters with different pore sizes enables graded filtration, extending the lifespan of the activated carbon. The dust collection trough at the bottom of the adsorption cartridge collects dust generated during adsorption and is periodically cleaned through the dust discharge port, preventing dust accumulation from affecting the adsorption effect.

[0017] The circulation drive mechanism uses a drive motor to rotate a screw conveyor, transporting the activated carbon particles from the bottom of the adsorption cylinder to the return pipe. After being cooled by the cooling device, the particles re-enter the top of the adsorption cylinder, thus achieving the recycling of activated carbon. The cooling coils in the cooling device circulate cooling water via a circulating water pump, and a filter removes impurities from the cooling water, ensuring continuous cooling performance.

[0018] In summary, this invention achieves efficient adsorption and regeneration of activated carbon through the coordinated operation of the adsorption cylinder, heating sleeve, gas distributor, circulation drive mechanism, and cooling device. At the same time, structural optimization reduces the energy consumption and floor space of the equipment, improves the recycling rate of activated carbon, and solves the problems existing in the prior art. It has significant technical advantages and application value. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0020] The attached diagram is labeled as follows: 1. Main frame; 2. Adsorption cylinder; 3. Activated carbon granules; 4. Heating sleeve; 5. Gas distributor; 6. Screw conveyor; 7. Return pipe; 8. Cooling coil; 9. Cooling water tank; 10. Filter screen. Detailed Implementation

[0021] This utility model provides an integrated desulfurization and denitrification device using circulating regeneration activated carbon, the specific implementation of which is described in conjunction with the appendix. Figure 1 Please provide a detailed explanation. For example... Figure 1As shown, the main frame 1 of the device serves as the supporting foundation for the overall structure. An air inlet is located at the top of the main frame 1, and an air outlet is located at the bottom. The air inlet and outlet are connected by a gas distribution device. The adsorption regeneration device is located inside the main frame 1 and includes multiple vertically arranged adsorption cylinders 2. Each adsorption cylinder 2 is filled with activated carbon particles 3, and a heating sleeve 4 is installed on the outer wall of the adsorption cylinder 2, connected to an external heat source. An inlet and outlet are located at the top and bottom of each adsorption cylinder 2, respectively, connected by a conveying pipe equipped with a screw conveyor 6. The gas distribution device includes a guide plate assembly located inside the main frame 1. The guide plate assembly consists of multiple inclined guide plates, forming a flue gas channel. The inlet of the flue gas channel is connected to the air inlet, and the outlet is connected to the top of the adsorption cylinder 2. A gas distributor 5 is located at the bottom of each adsorption cylinder 2, with multiple evenly distributed jet holes on the gas distributor 5, which are connected to the interior of the adsorption cylinder 2.

[0022] The inner wall of the adsorption cylinder 2 is provided with multiple layers of filter screens 10, which are spaced apart along the height of the adsorption cylinder 2. The pore size of each layer of filter screen 10 gradually decreases from top to bottom. The edges of the filter screens 10 are fixed to the inner wall of the adsorption cylinder 2 by clips. A support frame is provided in the central area of ​​the filter screens 10, and the support frame is welded to the inner wall of the adsorption cylinder 2. A temperature sensor is provided on the outer wall of the heating sleeve 4. The temperature sensor is electrically connected to an external control module. The control module adjusts the heating power of the external heat source according to the detection signal of the temperature sensor. The interior of the heating sleeve 4 is provided with heat-conducting fins, which extend along the length of the heating sleeve 4 and fit tightly against the outer wall of the adsorption cylinder 2. A one-way valve is provided in the jet hole of the gas distributor 5, and the opening direction of the one-way valve is towards the inside of the adsorption cylinder 2. A dust collection trough is provided at the bottom of the gas distributor 5, which is connected to the bottom of the adsorption cylinder 2. A dust discharge port is provided at the bottom of the dust collection trough, and a manual valve is installed at the dust discharge port.

[0023] The circulating drive mechanism includes a drive motor, a transmission chain, and multiple driven gears. The drive motor is fixedly mounted on one side of the main frame 1. The output shaft of the drive motor is connected to multiple driven gears via the transmission chain, and the driven gears mesh with the screw conveyor 6 of the adsorption cylinder 2. The discharge port of the adsorption cylinder 2 is connected to the inlet via a return pipe 7. A cooling device is installed on the return pipe 7, which includes a cooling water tank 9 and a cooling coil 8. The cooling coil 8 is arranged around the return pipe 7 and connected to the cooling water tank 9. The cooling device of the return pipe 7 also includes a circulating water pump. The inlet of the circulating water pump is connected to the cooling water tank 9, and the outlet is connected to the cooling coil 8. The outlet of the cooling coil 8 is connected to the cooling water tank 9 via a return water pipe. A filter is installed on the return water pipe, and the filter is filled with filter media. A maintenance platform is installed on the top of the main frame 1, and a transparent observation window is installed on the maintenance platform, which is aligned with the top of the adsorption cylinder 2. An operation panel is provided on one side of the main frame 1. The operation panel is electrically connected to the drive motor, temperature sensor and external heat source.

[0024] During actual operation, industrial flue gas containing sulfur oxides and nitrogen oxides enters the equipment through the air inlet at the top of the main frame 1. After passing through the guide plate group in the gas distribution device, the flue gas is evenly distributed to the top of multiple adsorption cylinders 2. After entering the adsorption cylinder 2, the flue gas is evenly distributed into the interior of the adsorption cylinder 2 through the jet holes of the gas distributor 5, and comes into full contact with the activated carbon particles 3. The activated carbon particles 3 adsorb the sulfur oxides and nitrogen oxides in the flue gas, and the clean gas after adsorption flows out through the bottom of the adsorption cylinder 2 and is collected at the air outlet at the bottom of the main frame 1 for discharge. During the adsorption process, the multi-layer filter screen 10 inside the adsorption cylinder 2 can effectively prevent the loss of activated carbon particles 3, and at the same time, the filter screen 10 with different pore sizes can achieve graded filtration. The ash collection trough at the bottom of the adsorption cylinder 2 can collect the dust generated during the adsorption process and clean it regularly through the ash discharge port.

[0025] When the adsorption capacity of activated carbon particles 3 decreases, the heating sleeve 4 is activated to heat the external heat source. The heat-conducting fins inside the heating sleeve 4 transfer heat to the outer wall of the adsorption cylinder 2, thereby heating and regenerating the activated carbon particles 3 inside the adsorption cylinder 2. During the heating process, a temperature sensor monitors the temperature of the outer wall of the heating sleeve 4 in real time and transmits the detection signal to the external control module. The control module adjusts the heating power of the external heat source according to the detection signal to ensure the stability and controllability of the heating process. After heating is completed, the drive motor drives the driven gear to rotate through the transmission chain. The driven gear further drives the screw conveyor 6 to rotate, transporting the activated carbon particles 3 at the bottom of the adsorption cylinder 2 to the return pipe 7 through the conveying pipe.

[0026] The cooling device on the return pipe 7 cools the high-temperature activated carbon particles 3. Cooling water in the cooling water tank 9 is pumped to the cooling coil 8 by a circulating water pump. The cooling coil 8 surrounds the return pipe 7, cooling the activated carbon particles 3 within it. The cooled water returns to the cooling water tank 9 through the return pipe. The filter on the return pipe removes impurities from the cooling water, ensuring continuous cooling. The cooled activated carbon particles 3 then re-enter the top of the adsorption cylinder 2 through the return pipe 7, completing the recycling process. The maintenance platform and transparent observation window on the top of the main frame 1 facilitate equipment maintenance and monitoring by operators. The control panel is used for centralized control of the drive motor, temperature sensor, and external heat source.

[0027] In the above specific embodiment, the main frame 1 serves as the foundation structure of the entire equipment, supporting all components of the adsorption regeneration device, gas distribution device, and circulation drive mechanism. The design of the adsorption cylinder 2, through the cooperation of multi-layer filter screens 10 and gas distributor 5, achieves efficient adsorption and uniform distribution of activated carbon particles 3. The heating sleeve 4, through the tight fit between its heat-conducting fins and the outer wall of the adsorption cylinder 2, ensures effective heat transfer, while the temperature sensor, in conjunction with the external control module, enables precise control of the heating process. The one-way valve design of the gas distributor 5 prevents backflow of flue gas, and the ash collection trough and ash discharge port provide convenient dust cleaning methods. The circulation drive mechanism, through the coordinated work of the drive motor, transmission chain, and screw conveyor 6, achieves automatic conveying and recycling of activated carbon particles 3. The cooling device, through the cooperation of the cooling water tank 9, cooling coil 8, and circulating water pump, completes the cooling treatment of the activated carbon particles 3, while the filter ensures the cleanliness of the cooling water. The design of the maintenance platform, transparent observation window, and operation panel on the top of the main frame 1 further improves the ease of operation and maintenance efficiency of the equipment.

[0028] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0029] First, industrial flue gas enters the equipment through the inlet at the top of the main frame 1 and passes through the guide plate assembly in the gas distribution device. The guide plate assembly consists of multiple inclined guide plates, and the flue gas channels between the guide plates can evenly distribute the flue gas to the top of multiple adsorption cylinders 2. After entering the adsorption cylinder 2, the flue gas is evenly distributed into the interior of the adsorption cylinder 2 through the jet holes of the gas distributor 5. The one-way valve on the gas distributor 5 ensures that the flue gas does not flow back, and the design of the jet holes ensures that the flue gas is in full contact with the activated carbon particles 3. The activated carbon particles 3 adsorb sulfur oxides and nitrogen oxides in the flue gas, and the clean gas after adsorption flows out through the bottom of the adsorption cylinder 2 and is discharged through the outlet at the bottom of the main frame 1. In this process, the multi-layer filter screen 10 set on the inner wall of the adsorption cylinder 2 plays a key role. Its design, which is spaced along the height direction and has a gradually decreasing pore size from top to bottom, not only effectively prevents the loss of activated carbon particles 3, but also improves the adsorption efficiency through staged filtration. The dust collection trough at the bottom of the adsorption cylinder 2 is used to collect the dust generated during the adsorption process. Operators can clean the dust in the dust collection trough regularly through the dust discharge port to avoid dust accumulation affecting the adsorption effect.

[0030] Secondly, when the adsorption capacity of activated carbon particles 3 decreases, the heating sleeve 4 activates its heating function to access an external heat source. The heat-conducting fins inside the heating sleeve 4 extend along its length and fit tightly against the outer wall of the adsorption cylinder 2. This design ensures efficient heat transfer to the activated carbon particles 3 inside the adsorption cylinder 2, thereby regenerating them. During the heating process, a temperature sensor monitors the temperature of the outer wall of the heating sleeve 4 in real time and transmits the detection signal to an external control module. The external control module adjusts the heating power of the external heat source based on the received temperature signal to ensure the stability and controllability of the heating process. This precise temperature control mechanism effectively avoids the degradation of activated carbon performance due to overheating or underheating.

[0031] Subsequently, after the heating and regeneration are completed, the drive motor drives the driven gear to rotate via the transmission chain, and the driven gear further drives the screw conveyor 6 to rotate. The screw conveyor 6 transports the activated carbon particles 3 at the bottom of the adsorption cylinder 2 to the return pipe 7 through the conveying pipe. In the return pipe 7, the cooling device cools down the high-temperature activated carbon particles 3. Cooling water in the cooling water tank 9 is pumped to the cooling coil 8 by a circulating water pump. The cooling coil 8 is arranged around the return pipe 7, which can efficiently cool the activated carbon particles 3 in the return pipe 7. The cooled water returns to the cooling water tank 9 through the return water pipe. The filter on the return water pipe can remove impurities from the cooling water, thereby ensuring the continuity of the cooling effect. This cooling mechanism not only achieves rapid cooling of the activated carbon particles 3, but also extends the service life of the cooling water.

[0032] Finally, the cooled activated carbon particles 3 re-enter the top of the adsorption cylinder 2 through the return pipe 7, completing the recycling process of the activated carbon particles 3. The maintenance platform and transparent observation window on the top of the main frame 1 facilitate maintenance and monitoring of the equipment by operators, while the control panel is used to centrally control the working status of the drive motor, temperature sensor, and external heat source. Throughout the operation, the coordinated operation of the adsorption cylinder 2, heating sleeve 4, gas distributor 5, circulation drive mechanism, and cooling device ensures efficient adsorption and regeneration of activated carbon. At the same time, structural optimization reduces the energy consumption and floor space of the equipment, significantly improving the recycling rate of activated carbon.

[0033] In summary, this device achieves efficient adsorption, regeneration, and recycling of activated carbon through the hierarchical filtration design of the multi-layer filter screen 10, the efficient heat transfer mechanism of the heating sleeve 4, the uniform gas distribution function of the gas distributor 5, the automated conveying capability of the circulation drive mechanism, and the efficient cooling treatment of the cooling device. It solves the problems existing in the prior art and has significant technical advantages and application value.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A regenerating activated carbon desulfurization and denitrification integrated equipment, comprising: The main frame (1) is characterized in that it further includes: An adsorption regeneration device includes multiple vertically arranged adsorption cylinders (2), the adsorption cylinders (2) are filled with activated carbon particles (3), the outer wall of the adsorption cylinders (2) is provided with a heating sleeve (4), the top and bottom of the adsorption cylinders (2) are respectively provided with a feed inlet and a discharge outlet, the feed inlet and the discharge outlet are connected by a conveying pipe, and a screw conveyor (6) is provided on the conveying pipe. A gas distribution device, the gas distribution device includes a guide plate group located inside the main frame (1), the guide plate group is composed of multiple inclined guide plates, a flue gas channel is formed between the guide plates, the inlet of the flue gas channel is connected to the air inlet at the top of the main frame (1), and the outlet is connected to the top of the adsorption cylinder (2). Each adsorption cylinder (2) is provided with a gas distributor (5) at the bottom, and multiple uniformly distributed jet holes are opened on the gas distributor (5), and the jet holes are connected to the inside of the adsorption cylinder (2). The circulating drive mechanism includes a drive motor, a transmission chain, and multiple driven gears. The drive motor is fixedly installed on one side of the main frame (1). The output shaft of the drive motor is connected to multiple driven gears through the transmission chain. The driven gears mesh with the screw conveyor (6) of the adsorption cylinder (2). The outlet of the adsorption cylinder (2) is connected to the inlet through the return pipe (7). A cooling device is provided on the return pipe (7). The cooling device includes a cooling water tank (9) and a cooling coil (8). The cooling coil (8) is arranged around the return pipe (7) and connected to the cooling water tank (9).

2. The integrated desulfurization and denitrification equipment with circulating regeneration activated carbon according to claim 1, characterized in that, The inner wall of the adsorption cylinder (2) is provided with multiple layers of filter screens (10). The filter screens (10) are arranged at intervals along the height direction of the adsorption cylinder (2). The aperture of each layer of filter screen (10) gradually decreases from top to bottom. The edge of the filter screen (10) is fixed to the inner wall of the adsorption cylinder (2) by a buckle. A support frame is provided in the central area of ​​the filter screen (10). The support frame is welded to the inner wall of the adsorption cylinder (2).

3. The integrated desulfurization and denitrification equipment with circulating regeneration activated carbon according to claim 1, characterized in that, A temperature sensor is provided on the outer wall of the heating sleeve (4), and the temperature sensor is electrically connected to an external control module. A heat-conducting fin is provided inside the heating sleeve (4), and the heat-conducting fin extends along the length of the heating sleeve (4) and is tightly attached to the outer wall of the adsorption cylinder (2).

4. The integrated desulfurization and denitrification equipment using circulating regeneration activated carbon according to claim 1, characterized in that, The gas distributor (5) is equipped with a one-way valve in the jet hole. The opening direction of the one-way valve is towards the inside of the adsorption cylinder (2). The bottom of the gas distributor (5) is equipped with an ash collection trough, which is connected to the bottom of the adsorption cylinder (2). The bottom of the ash collection trough is equipped with an ash discharge port, and a manual valve is installed at the ash discharge port.

5. The integrated desulfurization and denitrification equipment with circulating regeneration activated carbon according to claim 1, characterized in that, The cooling device of the return pipe (7) also includes a circulating water pump. The inlet of the circulating water pump is connected to the cooling water tank (9), and the outlet is connected to the cooling coil (8). The outlet of the cooling coil (8) is connected to the cooling water tank (9) through the return water pipe. A filter is installed on the return water pipe, and the filter is filled with filter medium.

6. The integrated desulfurization and denitrification equipment using circulating regeneration activated carbon according to claim 1, characterized in that, The main frame (1) is provided with a maintenance platform at the top, and a transparent observation window is installed on the maintenance platform. The transparent observation window is aligned with the top of the adsorption cylinder (2). An operation panel is provided on one side of the main frame (1). The operation panel is electrically connected to the drive motor, temperature sensor and external heat source.

7. The integrated desulfurization and denitrification equipment with circulating regeneration activated carbon according to claim 1, characterized in that, The top and bottom of the adsorption cylinder (2) are provided with flange structures, which are used to achieve a sealed connection between the adsorption cylinder (2) and the conveying pipe and the return pipe (7).

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