Activated carbon regeneration device and combined system

Abstract

The utility model relates to the technical field of activated carbon regeneration, in particular to an activated carbon regeneration device and a combined system.The regeneration device comprises an air inlet pipe, and the air inlet pipe extends into the bottom of the regeneration device; the exhaust pipe is arranged on the upper end surface of the regeneration device; the feeding channel is arranged in a manner of penetrating through the regeneration device; the feeding channel is filled with waste activated carbon; and the air inlet pipe is communicated with high-temperature steam. According to the utility model, the problem that the cost is high due to the fact that the existing activated carbon adopts a thermal regeneration method and needs to consume a large amount of energy for heating and the tail gas generated by desorption needs to be treated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of activated carbon regeneration, and particularly relates to a combined activated carbon regeneration system. Background Art

[0002] Activated carbon is a black porous solid carbonaceous material produced by crushing, molding coal or carbonizing and activating uniform coal particles. Its main component is carbon, and it contains a small amount of elements such as oxygen, hydrogen, sulfur, nitrogen, and chlorine. The specific surface area of ordinary activated carbon is between 500 and 1700 m 2 / g. It has strong adsorption performance and is a widely used industrial adsorbent, which is widely used in various fields such as water treatment, solvent recovery, and air purification.

[0003] After activated carbon adsorbs substances, it becomes waste activated carbon. In the industrial field, a large number, various types, and complex properties of waste activated carbon will be generated, and it can be regenerated through relevant means. The regeneration of waste activated carbon refers to the technology of using physical, chemical and other methods to remove the adsorbed substances from the waste activated carbon, restore its adsorption performance, and obtain activated carbon that can be used again. According to different principles, it can be divided into two categories: desorption regeneration method and decomposition regeneration method.

[0004] Common ones include thermal regeneration method, microwave regeneration method, ultrasonic regeneration method, biological regeneration method, chemical regeneration method, electrochemistry regeneration method, wet oxidation regeneration method, supercritical oxidation method, and photocatalytic regeneration method, etc. Among them, the thermal regeneration method refers to a method of physically desorbing and thermochemically decomposing the adsorbate adsorbed on the waste activated carbon by direct or indirect heating, so as to recover its adsorption capacity. It has the advantages of high treatment efficiency and strong universality, and is the most widely used mainstream technology in industrial applications. However, the thermal regeneration method requires a large amount of energy for heating, and the tail gas generated by desorption needs to be treated, which leads to the problem of high cost of thermally regenerated activated carbon.

[0005] Therefore, a combined activated carbon regeneration system. Content of the Utility Model

[0006] The content of the utility model lies in providing a combined activated carbon regeneration system, which mainly solves the problem that the existing activated carbon using the thermal regeneration method requires a large amount of energy for heating, and the tail gas generated by desorption needs to be treated, resulting in high costs.

[0007] The utility model provides a combined activated carbon regeneration system, including:

[0008] An air inlet pipe, which is arranged at the bottom of the regeneration device and extends into it;

[0009] An exhaust pipe, which is arranged on the upper end face of the regeneration device;

[0010] A feed channel that penetrates through the regeneration device; the feed channel is filled with waste activated carbon.

[0011] The intake pipe is connected to high-temperature steam.

[0012] It further includes:

[0013] An incineration system, where the preheating boiler of the incineration system is connected to the intake pipe of the regeneration device; the feed port of the incineration system is connected to the exhaust pipe of the regeneration device; the high-temperature flue gas of the incineration system is input into the intake port of the regeneration device.

[0014] Preferably, it includes:

[0015] The intake pipe includes:

[0016] Sprinklers, several in number, arranged along the length direction of the intake pipe; all the sprinklers are arranged on the side wall of the intake pipe facing the feed channel.

[0017] Preferably, the intake pipe, the exhaust pipe and the feed channel are arranged in parallel.

[0018] Preferably, it includes a drain outlet, which is arranged on the lower end face of the regeneration device.

[0019] Preferably, it includes:

[0020] A porous partition plate, which is arranged in the feed channel and along the length direction of the feed channel.

[0021] Preferably, it includes:

[0022] An intake port, which is opened on the front end face of the regeneration device; the intake port is connected to high-temperature flue gas.

[0023] An exhaust port, which is opened on the rear end face of the regeneration device.

[0024] Preferably, it includes:

[0025] A reaction zone, which is arranged in the middle section of the regeneration device, and the height of the reaction zone is equal to the height of the regeneration device; the intake pipe, the exhaust pipe and the feed channel are arranged in the reaction zone;

[0026] The intake port and the exhaust port are in gas communication outside the reaction zone.

[0027] Preferably, the intake pipe is connected to an inert gas storage tank.

[0028] Preferably, it includes:

[0029] The fin is arranged on the outer wall of the reaction zone and is inclined towards the air inlet.

[0030] As can be seen from the above, the technical solution provided by the present utility model can obtain the following beneficial effects:

[0031] First, the activated carbon regeneration device and its combined system proposed by the present utility model use high-temperature steam from the incineration system to perform thermal desorption on waste activated carbon, realizing energy recovery of the incineration system, greatly reducing the heating cost of waste activated carbon during thermal desorption, and ensuring the thermal desorption effect of waste activated carbon at the same time;

[0032] Second, the design of dividing the reaction zone into several vertical regions by a porous partition plate on the regeneration device proposed by the present utility model increases the contact area between the activated carbon and the reactor, further improving the heat exchange efficiency of indirect heating;

[0033] Third, the reaction zone and the jacket are arranged on the regeneration device proposed by the present utility model. While heating and drying the activated carbon using the heat of the high-temperature flue gas from the incineration system, it avoids the pollution of the activated carbon by the incineration flue gas and ensures the desorption effect of the activated carbon. Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a sectional view of the regeneration device in the embodiment of the present utility model;

[0036] Figure 2 It is a top view and a partial perspective view of the regeneration device in the embodiment of the present utility model. Detailed Embodiments

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0038] The existing activated carbon using the thermal regeneration method requires a large amount of energy for heating and needs to treat the tail gas generated by desorption, which leads to the problem of high cost.

[0039] like Figure 1 and Figure 2 As shown, this embodiment proposes an activated carbon regeneration combination system, including a regeneration device and an incineration system. The high-temperature steam generated by the incineration system is used to thermally desorb and regenerate the waste activated carbon, and the exhaust gas generated during the desorption process is introduced into the incineration system for high-temperature incineration treatment. After the desorption is completed, the high-temperature flue gas of the incineration system is introduced for heating and drying, and inert gas is introduced for cooling, thereby realizing the combination of the available energy of the incineration system and the thermal desorption regeneration of the waste activated carbon.

[0040] Among them, the activated carbon regeneration device includes an intake pipe 10, an exhaust pipe 20 and a feed channel; wherein the intake pipe 10 extends into the bottom of the regeneration device; the exhaust pipe 20 is arranged on the upper end surface of the regeneration device; the feed channel runs through the regeneration device; the feed channel is filled with waste activated carbon; and the intake pipe 10 is connected to high-temperature steam.

[0041] Preferably, in this embodiment, the air intake pipe 10 is connected to an incineration system, or other similar systems that produce low-grade saturated steam. Preferably, but not limited to, in this embodiment, the air intake pipe 10 is connected to a waste heat boiler of the incineration system.

[0042] Preferably, in this embodiment, the air intake pipe 10, the exhaust pipe 20 and the feed channel are arranged parallel to each other.

[0043] Preferably, a plurality of nozzles are arranged on the air inlet pipe 10, and all nozzles are arranged along the length direction of the air inlet pipe 10; all nozzles are arranged on the side wall of the air inlet pipe 10 facing the feed channel. Preferably, but not limited to, in this embodiment, all nozzles are evenly spaced.

[0044] In this embodiment, high-temperature steam moves along the length direction of the intake pipe 10, and after being ejected from the nozzle, it contacts the waste activated carbon in the feed channel, and thermally desorbs and regenerates the waste activated carbon. The waste gas originally adsorbed on the waste activated carbon will be discharged from the exhaust pipe 20, and the desorbed activated carbon will be discharged from the feed channel.

[0045] More specifically, it also includes a drain port 30 disposed on the lower end surface of the regeneration device.

[0046] Preferably, the number of the drain ports 30 in this embodiment is not fixed.

[0047] In this embodiment, the drain port 30 can be used to discharge the steam condensed water generated during the thermal desorption process.

[0048] More specifically, it also includes a porous partition plate 40 disposed in the feed channel, and the porous partition plate 40 is disposed along the length direction of the feed channel.

[0049] In this embodiment, the porous partition plate 40 creates a space for high-temperature steam to flow between the activated carbons, increasing the contact area between the activated carbon and the high-temperature steam, thereby improving the thermal desorption efficiency of the activated carbon.

[0050] More specifically, it further includes an air inlet 51 and an exhaust outlet 52; the air inlet 51 is opened on the front end face of the regeneration device; the air inlet 51 is connected to high-temperature flue gas; the exhaust outlet 52 is opened on the rear end face of the regeneration device.

[0051] Preferably, in this embodiment, the air inlet 51 is connected to the exhaust outlet 52 of the incineration system, so that the high-temperature flue gas enters the regeneration device to heat and dry the activated carbon.

[0052] In this embodiment, the high-temperature flue gas is the reuse of the exhaust gas from the incineration system, avoiding the loss of heat resources. At the same time, since the activated carbon is present in the feed channel, it can isolate the pollution of the high-temperature flue gas to the activated carbon, further ensuring the effect of thermal desorption.

[0053] More specifically, a reaction zone 60 is provided on the regeneration device. The reaction zone 60 is arranged in the middle section of the regeneration device, and the height of the reaction zone 60 is equal to the height of the regeneration device; the inlet pipe 10, the exhaust pipe 20 and the feed channel are all arranged in the reaction zone 60; among them, the air inlet 51 and the exhaust outlet 52 are in gas communication outside the reaction zone 60.

[0054] Preferably, in this embodiment, the feed channel directly uses the porous partition plate 40 to limit the movement path and range of the activated carbon, that is, the feed channel does not need to be provided with a housing.

[0055] Preferably, in this embodiment, the reaction zone 60 isolates the activated carbon storage position from the high-temperature flue gas, and the high-temperature flue gas dries the activated carbon by indirect heating.

[0056] In this embodiment, a reaction zone 60 is provided inside the regeneration device, and a jacket is provided outside the reaction zone 60. High-temperature flue gas generated by the hazardous waste incineration system is introduced into the jacket to indirectly heat the reaction zone 60 for heating and drying the activated carbon. The flue gas after heat exchange then returns to the flue gas treatment system of the incineration system, realizing efficient resource utilization and avoiding the generation of flue gas waste from polluting the environment, and directly transporting the flue gas waste for incineration treatment.

[0057] More specifically, the inlet pipe 10 is connected to an inert gas storage.

[0058] Preferably, two pipes should be separately provided on the inlet pipe 10, and control valves are respectively provided on the two pipes. One pipe is connected to high-temperature steam, and the other pipe is connected to an inert gas storage.

[0059] Preferably but not limited to, nitrogen is used as the inert gas for purging in this embodiment.

[0060] In this embodiment, when the activated carbon after being acted upon by high-temperature steam and high-temperature flue gas has a relatively high temperature and is prone to react and burn with oxygen, an inert gas is introduced to cool down the activated carbon.

[0061] More specifically, it further includes fins 61 provided on the outer side wall of the reaction zone 60, and the fins 61 are inclined towards the air inlet 51.

[0062] In this embodiment, the fins 61 can improve the heat exchange efficiency.

[0063] Furthermore, this embodiment can be controlled by a controller, that is, a temperature sensor is provided in the reaction zone 60, and the controller is connected to the temperature sensor and controls the opening and closing of different control valves on the inlet pipe 10 respectively to control the current activated carbon regeneration step.

[0064] In this embodiment, the controller should first open the high-temperature steam control valve to allow high-temperature steam to enter the regeneration device and contact the waste activated carbon. After a certain time has passed since the opening, it is controlled to close. Then, the high-temperature flue gas control valve is opened to dry the activated carbon with high-temperature flue gas, and at the same time, the temperature in the reaction zone is monitored. After the drying time reaches a certain time, it is controlled to close. At this time, the nitrogen control valve is opened to cool down the activated carbon with nitrogen, and it is judged whether to close the nitrogen control valve according to the induction data of the temperature sensor, and the output of the activated carbon is controlled.

[0065] In summary, an activated carbon regeneration combined system proposed in this embodiment, by providing a regeneration device that can receive the heat resources of the incineration system, enables the activated carbon to perform thermal desorption efficiently and quickly, reduces the cost of existing activated carbon thermal desorption, and ensures the thermal desorption effect of the activated carbon.

[0066] The above-described embodiments do not constitute a limitation on the protection scope of the technical solution. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the above embodiments shall be included within the protection scope of the technical solution.

Claims

1. An activated carbon regeneration combined system, characterized in that, Comprising: An intake pipe which extends into the bottom of the regeneration device. An exhaust pipe which is arranged on the upper end face of the regeneration device. A feed channel which penetrates through the regeneration device; the feed channel is filled with waste activated carbon. The intake pipe is connected to high-temperature steam. Further comprising: An incineration system, the preheating boiler of the incineration system is connected to the intake pipe of the regeneration device; the feed inlet of the incineration system is connected to the exhaust pipe of the regeneration device; the high-temperature flue gas of the incineration system is input into the intake port of the regeneration device.

2. The activated carbon regeneration combined system according to claim 1, wherein, The intake pipe comprises: Sprayers, the number of the sprayers is several and they are arranged along the length direction of the intake pipe; all the sprayers are arranged on the side wall of the intake pipe facing the feed channel.

3. The combined activated carbon regeneration system according to claim 2, wherein: The intake pipe, the exhaust pipe and the feed channel are arranged in parallel.

4. The activated carbon regeneration combined system according to claim 3, characterized in that, Comprising: A drain port which is arranged on the lower end face of the regeneration device.

5. A combined activated carbon regeneration system according to any one of claims 1 to 4, characterized in that, Comprising: A porous partition plate which is arranged in the feed channel and is arranged along the length direction of the feed channel.

6. The activated carbon regeneration combined system according to claim 5, wherein Comprising: An intake port which is opened on the front end face of the regeneration device; the intake port is connected to high-temperature flue gas. An exhaust port which is opened on the rear end face of the regeneration device.

7. The activated carbon regeneration combination system according to claim 6, characterized in that, Comprising: A reaction zone which is arranged in the middle section of the regeneration device, and the height of the reaction zone is equal to the height of the regeneration device; the intake pipe, the exhaust pipe and the feed channel are arranged in the reaction zone. The intake port and the exhaust port are in gas communication outside the reaction zone.

8. The combined activated carbon regeneration system according to claim 7, wherein: The intake pipe is connected to an inert gas storage tank.

9. The activated carbon regeneration combined system according to claim 8, characterized in that, Comprising: Fins which are arranged on the outer side wall of the reaction zone and are inclined towards the intake port.

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