Heating system of activated carbon regeneration tower

Abstract

The utility model relates to the technical field of activated carbon regeneration, and discloses a heating system of an activated carbon regeneration tower, which comprises a regeneration tower main body, and the regeneration tower main body comprises a preheating section, a heating section, a first cooling section and a second cooling section which are sequentially arranged from top to bottom; the preheating section and the heating section are connected together, and a first heat exchanger is arranged in the preheating section and the heating section. According to the utility model, the heating source is introduced into the first heat exchanger, flows upwards from the heating section to enter the preheating section and then is discharged, at the moment, the temperature of the heating source is reduced after exchanging heat with materials in the regeneration tower, and at the moment, the material heat is reduced after entering the second heat exchanger of the first cooling section and exchanging heat with the materials in the regeneration tower again; meanwhile, the gas subjected to heat exchange can enter the electric heater, enters the heating section again after being heated and circulates in sequence, heating is conducted when the gas still has heat, heat loss is low, and the heat energy utilization rate can be greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of activated carbon regeneration, in particular to a heating system of an activated carbon regeneration tower. Background Art

[0002] At present, the activated carbon method has been widely used in flue gas purification technologies in power plants, steel and other industries. As a solid-phase dry adsorption and removal technology for pollutants, the activated carbon method has a broad spectrum of absorption and can simultaneously purify pollutants such as SO2, NOx, organic matter, tar, heavy metals, dust, etc. in flue gas. The purification efficiency is high and the system does not require water consumption, does not produce secondary pollution, and sulfur resources can be recovered through the regeneration of activated carbon. At the same time, this compact integrated purification process also greatly shortens the purification process. After desulfurization and denitrification, the activated carbon loses its activity and must be regenerated before it can be recycled. Activated carbon regeneration is divided into water washing regeneration and thermal regeneration. The by-product of water washing regeneration is dilute sulfuric acid, which is inconvenient to use and has strong corrosiveness. Currently, thermal regeneration is the widely used method.

[0003] CN205815723U discloses an activated carbon regeneration system, including an activated carbon regeneration device, a catalytic burner, a catalytic blower, a heat exchanger, a liquid nitrogen protection device, and a controller. The activated carbon regeneration device, the catalytic burner, the catalytic blower, and the heat exchanger are sequentially connected via an air pipe to form a regeneration catalytic pipeline loop. The liquid nitrogen protection device is connected to the activated carbon regeneration device via a pipeline. The heat exchanger is also provided with an air inlet and an exhaust port. The activated carbon regeneration device, the catalytic burner, the catalytic blower, the heat exchanger, and the liquid nitrogen protection device are connected to the controller signal. The regeneration system has a simple and reasonable structure and high catalytic regeneration efficiency for activated carbon, but the energy utilization rate is not high. Since the activated carbon thermal regeneration requires a high temperature, the heat utilization in the current patent design is relatively dispersed, and there is a lot of waste heat waste, so that the effective utilization rate of energy is not very high, which increases the processing cost. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art and to propose a heating system for an activated carbon regeneration tower.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A heating system for an activated carbon regeneration tower comprises a regeneration tower body, wherein the regeneration tower body comprises a preheating section, a heating section, a first cooling section, and a second cooling section arranged in sequence from top to bottom;

[0007] The preheating section and the heating section are connected together, and a first heat exchanger is provided in the preheating section and the heating section, and a second heat exchanger is provided in each of the first cooling section and the second cooling section, and the first heat exchanger and the second heat exchanger are both provided with an output end and an input end;

[0008] It also includes an electric heater and two fans, one of which is connected to the input end of the second heat exchanger of the secondary cooling section through a pipeline;

[0009] Another fan is connected to the output end of the first heat exchanger through a pipeline, and the output end of the fan is connected to the input end of the second heat exchanger of the first cooling section through a pipeline;

[0010] The output end of the second heat exchanger of the first cooling section is connected to the input end of the first heat exchanger through a pipeline, and an electric heater is provided on the pipeline.

[0011] Preferably, an activated carbon storage tank is further included, and the output end of the second heat exchanger of the second cooling section is connected to the interior of the activated carbon storage tank through a pipeline, and the activated carbon storage tank is provided with an exhaust hole.

[0012] Preferably, the activated carbon storage tanks are provided in multiple groups, the output end pipeline of the second heat exchanger has several output ends, and the several output ends of the pipeline are respectively connected to several activated carbon storage tanks, and the several output ends of the pipeline are each provided with a solenoid valve.

[0013] Preferably, a temperature sensor is also provided at the position where the electric heater heats the gas for precise temperature control.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model is provided with a preheating section, a heating section, a first cooling section and a second cooling section which are arranged in sequence. When in use, a heating source (such as steam) is introduced into the first heat exchanger, and the heating source flows upward from the heating section into the preheating section and is then discharged. At this time, the temperature of the heating source is reduced after heat exchange with the material inside the regeneration tower. At this time, the gas enters the second heat exchanger of the first cooling section and exchanges heat with the material inside the regeneration tower again. The heat of the material is reduced, which plays a cooling role. At the same time, the gas after heat exchange can enter the electric heater, and enter the heating section again after being heated. The gas circulates in sequence. When the gas still has heat, it is heated, and the heat loss is low, which can greatly improve the thermal energy utilization rate. Another fan enters the second cooling section and can exchange the heat in the second cooling section with the air to heat the air to obtain hot air. The hot air can effectively utilize the waste heat, which effectively improves the energy utilization rate of the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a heating system for an activated carbon regeneration tower proposed in the present invention.

[0017] In the figure: 1. Regeneration tower body; 2. Preheating section; 3. Heating section; 4. First cooling section; 5. Second cooling section; 6. First heat exchanger; 7. Second heat exchanger; 8. Fan; 9. Electric heater; 10. Activated carbon storage tank; 11. Temperature sensor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1 , a heating system for an activated carbon regeneration tower, comprising a regeneration tower body 1, wherein the regeneration tower body 1 comprises a preheating section 2, a heating section 3, a first cooling section 4, and a second cooling section 5 arranged in sequence from top to bottom;

[0020] The preheating section 2 and the heating section 3 are connected together, and a first heat exchanger 6 is provided in the preheating section 2 and the heating section 3. A second heat exchanger 7 is provided in each of the first cooling section 4 and the second cooling section 5. The first heat exchanger 6 and the second heat exchanger 7 are both provided with an output end and an input end.

[0021] It also includes an electric heater 9 and two fans 8, one of the fans 8 is connected to the input end of the second heat exchanger 7 of the secondary cooling section through a pipeline;

[0022] Another fan 8 is connected to the output end of the first heat exchanger 6 through a pipeline, and the output end of the fan 8 is connected to the input end of the second heat exchanger 7 of the first cooling section 4 through a pipeline;

[0023] The output end of the second heat exchanger 7 of the first cooling section 4 is connected to the input end of the first heat exchanger 6 through a pipeline, and an electric heater 9 is provided on the pipeline.

[0024] When the device is in use, a heating source (such as steam) is introduced into the first heat exchanger 6, and the heating source flows upward from the heating section 3 into the preheating section 2 and is then discharged. At this time, the temperature of the heating source is reduced after heat exchange with the material inside the regeneration tower (the material enters the regeneration tower from the feed port at the top of the regeneration tower and is discharged from the discharge port at the bottom of the regeneration tower). At this time, the material enters the second heat exchanger 7 of the first cooling section 4, and after heat exchange with the material inside the regeneration tower again, the heat of the material is reduced, which plays a cooling role. At the same time, the gas after heat exchange can enter the electric heater 9, and after heating, enter the heating section 3 again, and circulate in sequence. When the gas still has heat, it is heated, and the heat loss is low, which can greatly improve the thermal energy utilization rate. Another fan 8 enters the second cooling section 5, and can exchange the heat in the second cooling section 5 with the air, heating the air to obtain hot air. The hot air can effectively utilize the waste heat, effectively improving the energy utilization rate of the existing technology.

[0025] In another embodiment, an activated carbon storage tank 10 is further included. The output end of the second heat exchanger 7 of the second cooling section 5 is connected to the interior of the activated carbon storage tank 10 through a pipeline. The activated carbon storage tank 10 is provided with an exhaust hole. The heating system is added to the activated carbon storage tank 10, and the fan 8 enters the second cooling section 5. The heat in the second cooling section 5 can be exchanged with the air, and the air is heated to obtain hot air. The hot air can be passed into the activated carbon storage tank 10, so that the waste activated carbon stored in the activated carbon storage tank 10 can be dried to ensure the subsequent regeneration quality.

[0026] In another embodiment, the activated carbon storage tanks 10 are provided in multiple groups, the output end pipeline of the second heat exchanger 7 has several output ends, and the several output ends of the pipeline are respectively connected to several activated carbon storage tanks 10, and the several output ends of the pipeline are provided with solenoid valves, so that the output of the second heat exchanger 7 can be connected to multiple activated carbon storage tanks 10 at the same time, so that the multiple activated carbon storage tanks 10 can be alternately loaded and dried to improve work efficiency.

[0027] In this embodiment, a temperature sensor 11 is further provided at the position where the electric heater 9 heats the gas for precise temperature control.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heating system for an activated carbon regeneration tower, comprising a regeneration tower body, characterized in that: The regeneration tower body includes a preheating section, a heating section, a first cooling section and a second cooling section arranged in sequence from top to bottom; The preheating section and the heating section are connected together, and a first heat exchanger is provided in the preheating section and the heating section, and a second heat exchanger is provided in each of the first cooling section and the second cooling section, and the first heat exchanger and the second heat exchanger are both provided with an output end and an input end; It also includes an electric heater and two fans, one of which is connected to the input end of the second heat exchanger of the secondary cooling section through a pipeline; Another fan is connected to the output end of the first heat exchanger through a pipeline, and the output end of the fan is connected to the input end of the second heat exchanger of the first cooling section through a pipeline; The output end of the second heat exchanger of the first cooling section is connected to the input end of the first heat exchanger through a pipeline, and an electric heater is provided on the pipeline.

2. The heating system for an activated carbon regeneration tower according to claim 1, characterized in that: It also includes an activated carbon storage tank, the output end of the second heat exchanger of the second cooling section is connected to the inside of the activated carbon storage tank through a pipeline, and the activated carbon storage tank is provided with an exhaust hole.

3. The heating system for an activated carbon regeneration tower according to claim 2, characterized in that: There are multiple groups of activated carbon storage tanks, the output end pipeline of the second heat exchanger has several output ends, and the several output ends of the pipeline are respectively connected to several activated carbon storage tanks, and solenoid valves are provided on the several output ends of the pipeline.

4. The heating system for an activated carbon regeneration tower according to claim 2, characterized in that: A temperature sensor is also provided at the position where the electric heater heats the gas for precise temperature control.

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