Activated carbon loaded carbon enhancing device based on acetylene microwave cracking

Abstract

The utility model relates to the technical field of activated carbon enhancement, and particularly discloses an activated carbon loaded carbon enhancement device based on microwave cracking acetylene, which comprises a reaction chamber, a feed port and a discharge port are arranged at two ends of the reaction chamber, sealing doors are arranged at the feed port and the discharge port, and a microwave generator, an air inlet pipe and an air outlet pipe are arranged on the side wall of the reaction chamber. Acetylene gas and protective gas are introduced into the reaction chamber through a gas inlet pipe, a reaction pipeline is arranged in the reaction chamber, micropores are uniformly formed in the side wall of the reaction pipeline, openable end covers are arranged at the two ends of the reaction pipeline, the reaction pipeline is connected with the reaction chamber through a rotating frame, and after the reaction is finished, the reaction pipeline rotates and inclines; the activated carbon is discharged out of the reaction chamber under the action of gravity, and a temperature sensor is arranged on the inner wall of the reaction chamber; the device can obviously improve the carbon loading efficiency, is low in energy consumption, can effectively excite acetylene cracking reaction, improves the performance of activated carbon, is low in cost, and is easy to realize industrial production.

Description

TECHNICAL FIELD

[0001] The utility model relates to active carbon technical field, concretely is a kind of active carbon supported carbon enhancement device based on microwave cleavage acetylene. BACKGROUND

[0002] Active carbon supported carbon refers to the technology that active component (such as metal oxide, carbon nanotube etc.) is loaded to the surface or pore structure of active carbon by physical or chemical method, thereby enhancing its adsorption performance.The adsorption efficiency of modified active carbon is significantly improved, for example, the adsorption capacity of carbon dioxide can reach 3-4 mmol / g, and it is suitable for environmental protection, chemical industry, food and other fields.

[0003] Active carbon supported carbon realizes the optimization of adsorption performance through functional modification, and currently still uses traditional heating furnace to carry out heating reaction, and the reaction time is long, efficiency is low, energy consumption is high, so that the whole process cost is higher. UTILITY MODEL CONTENT

[0004] The utility model is just in view of the above-mentioned insufficient of prior art, provide a kind of active carbon supported carbon enhancement device based on microwave cleavage acetylene, active carbon and acetylene gas can be heated quickly and uniformly, significantly improve carbon loading efficiency, energy consumption is low, can effectively stimulate acetylene cleavage reaction, through microwave heating stimulate acetylene cleavage, in the pore of active carbon high-efficiency carbon loading, improve the performance of active carbon;Compared with traditional method, the utility model device structure is simple, easy to operate, low in cost, easy to realize industrial production.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of active carbon supported carbon enhancement device based on microwave cleavage acetylene, including reaction chamber, the both ends of the reaction chamber are equipped with feed inlet and discharge port, feed inlet and discharge port are equipped with sealing door, microwave generator, gas inlet pipe and gas outlet pipe are equipped on the side wall of reaction chamber, acetylene gas and protective gas are introduced into reaction chamber by gas inlet pipe, reaction pipeline is equipped in reaction chamber, micropore is uniformly equipped on the side wall of reaction pipeline, the both ends of the reaction pipeline are equipped with openable end cap, reaction pipeline is connected with reaction chamber by rotating frame, after reaction, reaction pipeline is rotated and inclined, active carbon is discharged from reaction chamber under the action of gravity, temperature sensor is equipped on the inner wall of reaction chamber.

[0007] Preferably, the both ends of the reaction pipeline are equipped with the insertion hole matched with end cap and the locking bolt of fixed end cap.

[0008] Preferably, the length of the end cap is greater than the diameter of the reaction pipeline, and the locking bolt is located on the outside of the reaction pipeline.

[0009] Preferably, the side wall of the end cover is provided with a limiting pin and a sliding slot, and the inner wall of the insertion hole is provided with a guide block matched with the sliding slot.

[0010] Preferably, the rotating frame comprises a fixing ring sleeved outside the reaction pipeline, the fixing ring is connected with a rotating plate through a supporting rod, the rotating plate is connected with the side wall of the reaction chamber through a rotating shaft, one end of the rotating shaft is connected with a swing arm, the swing arm is located outside the reaction chamber, a hydraulic cylinder is connected with the side wall of the reaction chamber through a pin shaft, and the piston rod of the hydraulic cylinder is connected with the swing arm through a pin shaft.

[0011] Preferably, the discharge outlet is connected with an inclined discharge chute, and the discharge chute is located below the reaction pipeline.

[0012] Preferably, the discharge chute is provided with baffles on both sides.

[0013] Compared with the prior art, the microwave heating technology has the advantages that:

[0014] 1、The microwave heating technology has the characteristics of rapidness, high efficiency and selective heating, can rapidly and uniformly heat the activated carbon and acetylene gas, and significantly improves the carbon loading efficiency; the microwave heating has the characteristics of selective heating and low energy consumption; the microwave heating can effectively stimulate the acetylene cracking reaction, loads carbon in the activated carbon pores through the microwave heating stimulation of acetylene cracking, and improves the performance of the activated carbon; compared with the traditional method, the device has the advantages of simple structure, convenient operation, low cost and easy industrialization. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a structural schematic view of the reaction pipeline;

[0017] Figure 3 is a structural schematic view of the end portion of the reaction pipeline;

[0018] Figure 4 is a structural schematic view of the rotating frame;

[0019] Figure 5 is a front view of the utility model;

[0020] Figure 6 is a structural schematic view of the utility model when discharging;

[0021] In the figure: 1-reaction chamber; 101-sealing door; 102-feeding port; 103-gas inlet pipe; 104-discharge port; 105-discharge chute; 106-baffle; 107-gas outlet pipe; 2-microwave generator; 3-reaction pipeline; 301-micropore; 302-end cover; 303-limiting pin; 304-slotted guide; 305-locking bolt; 306-receptacle; 307-guiding block; 4-rotary frame; 401-rotating shaft; 402-rotating plate; 403-fixing ring; 404-swinging arm; 405-hydraulic cylinder; 5-temperature sensor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As Figure 1As shown, a kind of activated carbon supported carbon enhancement device based on microwave cracking acetylene, including reaction chamber 1, the side wall of reaction chamber 1 is equipped with the layer of high-temperature-resistant, corrosion-resistant insulating material, the both ends of reaction chamber 1 are equipped with feed inlet 102 and discharge outlet 104, the both ends of feed inlet 102 and discharge outlet 104 are equipped with sealing door 101, one end of sealing door 101 is connected with reaction chamber 1 by shaft, opening end is provided with door lock, the side wall of reaction chamber 1 is equipped with microwave generator 2, gas inlet pipe 103 and gas outlet pipe 107, microwave generator 2 is staggered distribution arrangement, and the number is several, microwave generator 2 provides heating source for pyrolysis reaction, acetylene gas and protective gas (such as nitrogen, argon) are passed into reaction chamber 1 through gas inlet pipe 103, and the gas flow is accurately controlled by gas flow controller, to ensure that acetylene and activated carbon supported metal fully react, while avoiding the security risks caused by excessive acetylene, gas outlet pipe 107 is connected with waste gas treatment device, reaction tube 3 is arranged in reaction chamber 1, and the side wall of reaction tube 3 is uniformly provided with micropore 301, so that acetylene gas and protective gas passing into microwave heating cavity can enter material reaction tube 3 and react with activated carbon carrier, the material of reaction tube 3 can be high-temperature-resistant, corrosion-resistant metal material (such as porous stainless steel or porous titanium) or ceramic material, preferably high-temperature-resistant ceramic material (such as alumina or silicon carbide), these materials have good microwave absorption, heat resistance and chemical stability, and are suitable for long-term use in high-temperature and corrosive environment, the pore size of the micropore 301 is between 1-10 μm, and the pore size distribution is uniform, to ensure that the gas passes uniformly and fully contacts with activated carbon. The both ends of reaction tube 3 are provided with openable end cover 302, reaction tube 3 is connected with reaction chamber 1 through rotating frame 4, activated carbon carrier is placed in reaction tube 3, and the activated carbon can be powdered activated carbon, granular activated carbon, columnar activated carbon and the like, the surface of activated carbon is loaded with metal catalyst (such as nickel, iron, cobalt and the like), and the metal catalyst is used to promote acetylene cracking reaction, after reaction, reaction tube 3 is rotated and inclined, and activated carbon is discharged from reaction chamber 1 under the action of gravity, temperature sensor 5 is arranged on the inner wall of reaction chamber 1, and is controlled by temperature control module system, to monitor and adjust reaction temperature in real time.

[0024] As Figure 2 、 Figure 3 shown, the both ends of reaction tube 3 are provided with insertion hole 306 matched with end cover 302 and locking bolt 305 for fixing end cover 302, the length of end cover is greater than the diameter of reaction tube 3, locking bolt 305 is located outside reaction tube 3, end cover 302 at one end of feed inlet 102 is opened when feeding, and end cover 302 at one end of discharge outlet 104 is opened when discharging.

[0025] The end cap 302 has a limit pin 303 and a slide groove 304 on its side wall. The inner wall of the insertion hole 306 has a guide block 307 that cooperates with the slide groove 304. When the end cap 302 is opened by horizontal sliding, the limit pin 303 can prevent the end cap 302 from separating from the insertion hole 306. After opening, it can be tightened and fixed by locking bolt 305.

[0026] like Figure 4 , Figure 5 As shown, the rotating frame 4 includes a fixing ring 403 fitted around the outside of the reaction pipe 3. The fixing ring 403 is connected to a rotating plate 402 via a support rod. There are two rotating plates 402 located on either side of the reaction pipe 3. The rotating plates 402 are connected to the side wall of the reaction chamber 1 via a rotating shaft 401. One end of the rotating shaft 401 is connected to a swing arm 404, which is located outside the reaction chamber 1. A hydraulic cylinder 405 is connected to the side wall of the reaction chamber 1 via a pin. The piston rod of the hydraulic cylinder 405 is connected to the swing arm 404 via a pin. One or two sets of swing arms 404 and hydraulic cylinders 405 can be provided. Figure 6 As shown, the hydraulic cylinder 405 can rotate the reaction pipe 3, causing it to tilt and discharge materials.

[0027] An inclined discharge chute 105 is connected inside the discharge port 104. The discharge chute 105 is located below the reaction pipe 3. Baffles 106 are provided on both sides of the discharge chute 105. Activated carbon is discharged from the reaction chamber 1 through the discharge chute 105.

[0028] The operating steps are as follows:

[0029] (1) Loading: Open the sealing door 101 and end cap 302 at the feed end, place the activated carbon loaded with metal catalyst into the reaction pipeline 3, and close the sealing door 101 and end cap 302.

[0030] (2) Filling with mixed gas: Open the acetylene gas input channel and the protective gas input channel, open the gas outlet pipe 107, and introduce 99.5% pure acetylene and 99.9% pure protective gas (such as nitrogen or argon) into the cavity through the gas input system. The volume ratio of acetylene to protective gas is 1:5-1:10.

[0031] (3) Microwave pyrolysis: Start microwave generator 2, control the temperature in reaction chamber 1 to 500-800℃ and the residence time to 20-50min, microwave heat activated carbon and metal catalyst to stimulate acetylene pyrolysis reaction.

[0032] Acetylene cracking reaction: Acetylene (C2H2) cracks to produce carbon (C) and hydrogen (H2) under the catalysis of a metal catalyst and microwave heating.

[0033] Reaction equation:

[0034] C2H2 2C + H2

[0035] Carbon deposition: The generated carbon is deposited in the pores of the activated carbon, increasing the carbon loading of the activated carbon.

[0036] During the reaction, the temperature control system monitors and adjusts the reaction temperature in real time, and the temperature is controlled at 500-800℃.

[0037] (4) Cooling: After the reaction is completed, turn off the microwave generator 2, close the acetylene gas input channel, adjust the purity of the protective gas (such as nitrogen or argon) to ≥99.9%, the protective gas (such as nitrogen or argon) rate is ≥20L / min, the temperature of the loaded activated carbon is cooled to below 60℃, and the protective gas input channel is closed.

[0038] (5) Product collection: After the reaction is completed, the gas product is discharged through the gas outlet pipe 107 and treated, the sealing door 101 and the end cover 302 at the discharge end are opened, the reaction pipeline 3 is inclined, and the activated carbon is discharged from the discharge chute 105. Specific embodiments

[0040] (1) Loading: Add granular activated carbon (particle size 2-4mm) loaded with nickel-based catalyst (mass fraction 5%) into the reaction pipeline 3.

[0041] (2) Fill in the mixed gas: Open the acetylene gas input channel and the nitrogen gas input channel, open the gas outlet pipe 107, and pass the acetylene with a purity of 99.5% and the nitrogen with a purity of 99.9% into the cavity through the gas input system, the volume ratio of acetylene to nitrogen is 1:5, the acetylene flow rate is 0.5L / min, and the nitrogen flow rate is 2.5L / min.

[0042] (3) Microwave cracking: Start the microwave generator 2, control the temperature in the microwave heating cavity to be 600℃, and the residence time to be 30min, microwave heat the activated carbon and nickel-based catalyst, and excite the acetylene cracking reaction. Acetylene is cracked into carbon under the catalysis of nickel-based catalyst and microwave heating, and the carbon is deposited in the pores of the granular activated carbon, increasing the carbon loading of the activated carbon.

[0043] During the reaction, the temperature control system monitors and adjusts the reaction temperature in real time, and the temperature is controlled at 600℃.

[0044] (4) Cooling: After the reaction is completed, turn off the microwave generator 2, close the acetylene gas input channel, adjust the purity of the nitrogen to ≥99.9%, the nitrogen rate is ≥20L / min, the temperature of the loaded activated carbon is cooled to below 60℃, and the protective gas input channel is closed.

[0045] (5) Product collection: after the reaction is completed, the gaseous product is discharged through the gas outlet pipe 107 and treated; the activated carbon is discharged from the discharge port 104 through the discharge chute 105, and the specific surface area and carbon loading of the granular activated carbon after the carbon loading are detected, and the results show that the carbon loading of the activated carbon is increased by 30%, and the specific surface area is increased by 25%.

[0046] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A kind of activated carbon supported carbon enhancement device based on microwave cleavage acetylene, comprising reaction chamber, the both ends of the reaction chamber are provided with feed inlet and discharge outlet, and feed inlet and discharge outlet are both provided with sealing door, characterized in that: The side wall of the reaction chamber is provided with a microwave generator, an air inlet pipe and an air outlet pipe, acetylene gas and protective gas are introduced into the reaction chamber through the air inlet pipe, a reaction pipeline is arranged in the reaction chamber, the side wall of the reaction pipeline is uniformly provided with micropores, the two ends of the reaction pipeline are provided with openable end covers, the reaction pipeline is connected with the reaction chamber through a rotating frame, after the reaction is completed, the reaction pipeline is rotated and tilted, the activated carbon is discharged from the reaction chamber under the action of gravity, and a temperature sensor is arranged on the inner wall of the reaction chamber.

2. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 1, wherein: The two ends of the reaction pipeline are provided with a socket matched with the end cover and a locking bolt for fixing the end cover.

3. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 2, wherein: The length of the end cover is greater than the diameter of the reaction pipeline, and the locking bolt is located on the outside of the reaction pipeline.

4. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 2, wherein: The side wall of the end cover is provided with a limiting pin and a sliding groove, and the inner wall of the socket is provided with a guide block matched with the sliding groove.

5. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 1, wherein: The rotating frame comprises a fixing ring sleeved on the outside of the reaction pipeline, the fixing ring is connected with a rotating plate through a support rod, the rotating plate is connected with the side wall of the reaction chamber through a rotating shaft, one end of the rotating shaft is connected with a swing arm, the swing arm is located on the outside of the reaction chamber, a hydraulic cylinder is connected with the side wall of the reaction chamber through a pin shaft, and the piston rod of the hydraulic cylinder is connected with the swing arm through a pin shaft.

6. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 1, wherein: An inclined discharge chute is connected in the discharge port and located below the reaction pipeline.

7. A carbon enhancement device based on microwave dissociation of acetylene on activated carbon as claimed in claim 6, wherein: The two sides of the discharge chute are provided with baffles.

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