Method and device for synergistically activating activated carbon inside and outside sectional furnace

Abstract

The invention discloses an activated carbon sectional inside and outside collaborative activation method and device, and the method comprises the following steps: heating an activated carbon material through one end of a furnace body, and enabling the material to reach a reaction temperature; a straight pipe or a coil pipe outside the furnace is arranged at a flue gas channel of the furnace body, and the heated materials are introduced into the straight pipe or the coil pipe; high-temperature materials in the furnace are led out to the straight pipe or the coil pipe through the inclination angle of the furnace body; and steam is introduced into the straight pipe or the coil pipe, so that the material and the steam are subjected to an activation reaction. According to the scheme, the steam utilization rate can be increased, and energy consumption and maintenance cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of activation, and in particular to a method and device for coordinated activation of activated carbon inside and outside a segmented furnace. Background Art

[0002] Activated carbon is an amorphous carbonaceous porous adsorption material with a highly developed pore structure and a huge specific surface area. The carbon atoms composed of graphite microcrystals are arranged in a hexagonal lattice plane and have an sp² hybrid orbital structure. Due to its unique physical and chemical properties, activated carbon is widely used in many fields such as industrial production, environmental protection, and medical health. In the industrial field, activated carbon can be used for gas purification, solvent recovery, catalyst carrier, etc.; in environmental protection, it can effectively remove pollutants in water and the atmosphere; in the medical and health field, it can be used for drug carriers, blood purification, etc. The preparation process of activated carbon mainly includes two key steps: carbonization and activation. Among them, the activation process is the core process that determines the performance of activated carbon products. Through activation, the specific surface area and porosity of carbon materials can be significantly increased, and their adsorption capacity for target substances can be enhanced. Traditional activation methods mainly include physical activation and chemical activation. Physical activation usually uses water vapor, carbon dioxide or air as an activator at a high temperature of 700-1000°C; chemical activation uses chemical reagents such as zinc chloride, phosphoric acid, and potassium hydroxide to achieve activation effects at relatively low temperatures.

[0003] However, the prior art still has the following outstanding problems in the activated carbon activation process: low activation efficiency. The currently commonly used activation process has the problem of low raw material conversion rate, resulting in low product yield and high production cost. Specifically, the amount of activated carbon produced per unit raw material input is limited, and the product quality fluctuates greatly. Poor activation uniformity. During the physical activation process, the contact between the activator (such as water vapor) and the carbonaceous raw material is often uneven, resulting in local differences in the degree of activation. This unevenness directly affects the performance consistency of the product and reduces the overall quality of the activated carbon. Insufficient reaction depth. Due to the short contact time between the activator and the carbonaceous raw material, the activation reaction often only occurs on the surface of the material and is difficult to penetrate into the carbon core. This results in insufficient development of the internal pores of the activated carbon obtained, and the specific surface area and adsorption capacity fail to reach the ideal level. Low energy utilization efficiency. When using water vapor activation, a large amount of steam that does not participate in the reaction directly penetrates the material layer into the flue gas channel, which not only causes energy waste, but also reduces the overall reaction temperature of the system and affects the activation effect. This phenomenon increases production costs and reduces the economy of the process. The equipment maintenance cost is high. The existing activation equipment is prone to coking and clogging during long-term operation, and needs to be frequently shut down for cleaning and maintenance. This not only increases the maintenance cost, but also affects the production efficiency and stability of product quality.

[0004] Therefore, there is an urgent need for a technical solution that can improve steam utilization and reduce energy consumption and maintenance costs. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the embodiment of the present application provides a method and device for coordinated activation of activated carbon inside and outside a segmented furnace. The present application solves the technical problems of low steam utilization and high failure rate in the prior art.

[0006] An embodiment of the present application provides a method for coordinated activation of activated carbon inside and outside a segmented furnace, comprising: heating the activated carbon material through one end of the furnace body to make the material reach the reaction temperature; setting a straight pipe or coil outside the furnace at the flue gas channel of the furnace body, and introducing the heated material into the straight pipe or coil; leading the high-temperature material in the furnace to the straight pipe or coil through the inclination angle of the furnace body; and passing steam into the straight pipe or coil to make the material react with the steam for activation.

[0007] A possible implementation method also includes: configuring a multi-stage furnace body, returning the material that has completed the first activation to the furnace body for multi-stage cyclic heating activation; sampling at the end of the furnace outer tube at the penultimate flue gas channel for iodine value detection, returning to the target activation stage for repeated activation when the standard is not met, and outputting and cooling down when the standard is met.

[0008] In one possible implementation, a multi-stage furnace body is configured, and the activated material is returned to the furnace body for multi-stage cyclic heating activation, including: returning the material that has completed the first activation reaction to the second heating pipe in the furnace body for second-stage heating; setting an external furnace pipe at the second flue gas channel of the furnace body; introducing the material after the second stage of heating into the external furnace pipe; passing steam into the external furnace pipe to allow the material to undergo a second activation reaction with the steam; and returning the material that has completed the second activation reaction to the furnace body for the next cycle of heating activation.

[0009] In a possible implementation, when the standard is not met, returning to the target activation stage for repeated activation includes: when the iodine value of the material does not meet the standard, returning the material to the target activation stage for repeated activation through a reverse spiral tube.

[0010] A possible implementation method also includes: determining the particle size distribution characteristics of the material, measuring the angle of repose and calculating the mass loss rate to obtain the target parameters of the material, the target parameters including the median particle size, particle size distribution uniformity coefficient, angle of repose and mass loss rate; selecting and setting the structural parameters of the straight pipe or coil based on the target parameters.

[0011] In a possible implementation, the structural parameters of a straight pipe or a coil are selected and set based on the target parameters, including: when the median particle size of the material is within a first preset interval and the particle size distribution uniformity coefficient is less than a first preset value, a straight pipe is selected for setting; the ratio of the inner diameter of the straight pipe to the material particle size is within a second preset interval, and the inclination angle of the straight pipe is within a third preset interval; when the median particle size of the material is not within the first preset interval or the particle size distribution uniformity coefficient is greater than the first preset value, a coil is selected for setting; according to the repose angle of the material, the ratio of the pitch of the coil to the tube diameter is calculated according to a preset calculation formula; when the mass loss rate is greater than a second preset value, the coil is selected, and when the mass loss rate is less than or equal to the second preset value, the straight pipe is selected.

[0012] In a possible implementation, sampling is performed at the end of the furnace outer tube at the penultimate flue gas channel for iodine value detection, and if the standard is not met, the material is returned to the target activation stage for repeated activation, including: collecting material samples, pneumatically conveying them to iodine value detection, grinding the samples, adding iodine standard solution and oscillating them, and then using a spectrophotometer to measure the absorbance and calculate the iodine value; based on the measured iodine value, the material is returned to the corresponding activation section at a preset speed and the steam flow is adjusted through a reverse spiral tube and a multi-channel diversion device with a set pitch ratio and inclination.

[0013] In a possible implementation, according to the measured iodine value, the material is returned to the corresponding activation section at a preset speed and the steam flow is adjusted by setting a reverse spiral tube and a multi-channel diverter device with a pitch ratio and an inclination angle, including: setting a reverse spiral tube and a multi-channel diverter device that meet the predetermined inner diameter ratio, pitch ratio and inclination requirements; when the iodine value of the material is in the first iodine value interval, the material is returned to the entrance of the last activation section at a first speed through the reverse spiral tube; when the iodine value of the material is in the second iodine value interval, the material is returned to the second-to-last activation section at a second speed through the multi-channel diverter device; when the iodine value of the material is lower than the lower limit of the second iodine value interval, the material is returned to the first activation section through the diverter device, and the steam flow of this section is increased at the same time.

[0014] An embodiment of the present application also provides a device for applying the synergistic activation method as described in any of the above embodiments, comprising one or more sections of a furnace body, a smoke channel being provided in the furnace body, and an external furnace pipe of a straight pipe or a coil being provided at the smoke channel; the furnace body has a feed end and a discharge end, the space between the feed end and the smoke channel is used for heating the material, and the discharge end is used for cooling the activated material; the external furnace pipe is used for leading out the heated material and passing steam through one or more oxygen supply fans for activation treatment and then returning to the furnace body; the external furnace pipe comprises a forward pipe and a reverse pipe, and the reverse pipe is used for leading the activated material into the front end for re-activation.

[0015] In the above-provided method and device for coordinated activation of activated carbon inside and outside the sectional furnace, the embodiment of the present application can improve the utilization rate of steam by separating the product from the smoke channel and concentrating it in a specific area to force it to fully contact with steam. Furthermore, in some embodiments, through electrification control, steam is only injected into the product area, which can reduce the failure rate and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of a process for synergistic activation of activated carbon inside and outside a segmented furnace provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a synergistic activation device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0019] Those skilled in the art can understand that the terms "first", "second" and the like in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc., and neither represent any specific technical meaning nor represent the necessary logical order between them. It should also be understood that in the embodiments of the present disclosure, "multiple" can refer to two or more, and "at least one" can refer to one, two or more. It should also be understood that for any component, data or structure mentioned in the embodiments of the present disclosure, in the absence of explicit limitation or contrary revelation given in the context, it can generally be understood as one or more. In addition, the term "and / or" in the present disclosure is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present disclosure generally indicates that the associated objects before and after are an "or" relationship. It should also be understood that the description of each embodiment in the present disclosure emphasizes the differences between the embodiments, and the same or similar parts can refer to each other. For the sake of brevity, they will not be repeated one by one.

[0020] At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered part of the specification. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Figure 1 The following is a schematic diagram of a method for synergistic activation of activated carbon inside and outside a segmented furnace provided in an embodiment of the present application. Figure 1 As shown, in step S101, the activated carbon material is heated through one end of the furnace body to make the material reach the reaction temperature. In step S102, a straight pipe or coil outside the furnace is set at the smoke channel of the furnace body, and the heated material is introduced into the straight pipe or coil. In step S103, the high-temperature material in the furnace is led out to the straight pipe or coil by the inclination angle of the furnace body. In step S104, steam is introduced into the straight pipe or coil to make the material and the steam undergo activation reaction.

[0023] Furthermore, it also includes: configuring a multi-stage furnace body, returning the material that has completed the first activation to the furnace body for multi-stage cyclic heating activation; sampling at the end of the furnace outer tube at the penultimate flue gas channel for iodine value detection, returning to the target activation stage for repeated activation when the standard is not met, and outputting and cooling down the material when the standard is met.

[0024] Among them, a multi-stage furnace body is configured, and the activated material is returned to the furnace body for multi-stage cyclic heating activation, including: returning the material that has completed the first activation reaction to the second heating pipeline in the furnace body for two-stage heating; an outer furnace pipe is arranged at the second flue gas channel of the furnace body; the material after the second stage heating is introduced into the outer furnace pipe; steam is introduced into the outer furnace pipe to make the material and the steam undergo a second activation reaction; the material that has completed the second activation reaction is returned to the furnace body for the next cycle of heating activation.

[0025] Wherein, when the standard is not met, returning to the target activation stage for repeated activation includes: when the iodine value of the material does not meet the standard, returning the material to the target activation stage for repeated activation through a reverse spiral tube.

[0026] In one embodiment, the activation process of the material can be divided into the following steps: First, the material enters the furnace from the feeding end and is preheated in the first flue gas channel. The heated material is transported through an external straight pipe or coil, and steam is introduced for initial activation. The activated material returns to the furnace and enters the next flue gas channel to continue heating.

[0027] Secondly, the heated material enters the external spiral tube system again for the second activation treatment. At this time, the steam injection amount can be adjusted according to the process needs to ensure the full progress of the activation reaction. The activated material continues to return to the furnace body for the next cycle.

[0028] Again, at the last section of the spiral tube, the system samples the material and tests the iodine value. When the test results show that the iodine value of the material meets the requirements, the material continues to be transported to the discharge end for cooling. If the iodine value does not meet the standard, the material is transported back to the front end through the reverse spiral tube for repeated activation.

[0029] Furthermore, sampling is carried out at the end of the furnace outer tube at the second-to-last flue gas channel for iodine value detection. If the standard is not met, the material is returned to the target activation stage for repeated activation, including: collecting material samples, pneumatically conveying them to iodine value detection, grinding the samples, adding iodine standard solution and oscillating them, and then using a spectrophotometer to measure the absorbance and calculate the iodine value; based on the measured iodine value, the material is returned to the corresponding activation section at a preset speed and the steam flow is adjusted through a reverse spiral tube and a multi-channel diversion device with set pitch ratio and inclination.

[0030] Among them, according to the measured iodine value, the material is returned to the corresponding activation section at a preset speed and the steam flow is adjusted by setting a reverse spiral tube and a multi-channel diverter device with a pitch ratio and an inclination angle, including: setting a reverse spiral tube and a multi-channel diverter device that meet the predetermined inner diameter ratio, pitch ratio and inclination angle requirements; when the iodine value of the material is in the first iodine value interval, the material is returned to the entrance of the last activation section at a first speed through the reverse spiral tube; when the iodine value of the material is in the second iodine value interval, the material is returned to the second to last activation section at a second speed through the multi-channel diverter device; when the iodine value of the material is lower than the lower limit of the second iodine value interval, the material is returned to the first activation section through the diverter device, and the steam flow of this section is increased at the same time.

[0031] Specifically, in one implementation scenario, the iodine value of materials can be tested using an improved rapid test method, with an online sampling device set at the end of the spiral tube. The sampler consists of a porous sampling head made of ceramic and a pneumatic conveying system, which automatically takes about 15.5-18.5g of material samples every 8-12 minutes. The aperture of the sampling head is designed to be 2.5-3.5 times the average particle size of the material to ensure the representativeness of the sampling.

[0032] After being transported, the sample enters the rapid iodine value detection unit. The unit adopts an improved colorimetric method and is carried out through the following steps: 1. Grind the sample to less than 100 mesh and weigh 2.50g±0.02g; 2. Add 25.0 mL of 0.048-0.052 mol / L iodine standard solution, seal and shake for 4.5-5.5 minutes; 3. Use an online spectrophotometer to measure the absorbance A of the solution at a wavelength of 460 nm; 4. Determine the iodine value of the sample according to the improved iodine value calculation formula: I = (k1×A 2 + k2×A) × (V0 / m)× f(T), where I is the iodine value (mg / g), k1 and k2 are the calibration coefficients of the equipment (approximately 847.3 and 412.6, respectively), A is the absorbance, V0 is the volume of the iodine standard solution (mL), m is the sample mass (g), and f(T) is the temperature correction factor: f(T) = 1 +0.00382×(T - 20), and T is the test temperature (°C).

[0033] When the measured iodine value is lower than the specified value (usually required to be no less than 900-1100 mg / g), the return system is automatically triggered. The return system includes a reverse spiral tube and a multi-channel diversion device. The structural parameters of the reverse spiral tube must meet the following requirements: 1. Ratio of spiral tube inner diameter (D) to material particle size (d): D / d = 15.5-18.5 2. Ratio of pitch (P) to inner diameter (D): P / D = 0.85-1.15 3. Spiral tube inclination angle (α): 12-18 degrees The selection of the return process can be based on the following judgment mechanisms: If 850mg / g ≤ I < 900mg / g, repeat the last activation process. At this time, the material returns to the entrance of the last activation section through the reverse spiral tube, and the spiral tube speed is controlled at 18-22rpm.

[0034] If 800mg / g ≤ I < 850mg / g, it returns to the penultimate activation stage. At this time, the multi-channel diversion device guides the material into the corresponding stage, and the spiral tube speed is increased to 23-27rpm.

[0035] If I < 800 mg / g, the complete activation cycle needs to be repeated. The diverter returns the material to the first activation stage and adjusts the steam flow rate in this stage to increase by 15-25%.

[0036] In the process of returning materials, in order to ensure uniform distribution of materials, the reverse spiral tube adopts a variable pitch design. The pitch of the inlet section is relatively large, about 1.35-1.45 times that of the outlet section, forming a gradual compression to prevent material accumulation. At the same time, the surface of the spiral tube has been specially treated, and the roughness of the inner wall is controlled within the range of Ra3.2-4.0μm, which can ensure smooth material transportation and prevent excessive wear.

[0037] Furthermore, with regard to the selection of straight pipes or coils, the embodiments of the present application also include: determining the particle size distribution characteristics of the material, measuring the angle of repose and calculating the mass loss rate to obtain target parameters of the material, wherein the target parameters include the median particle size, particle size distribution uniformity coefficient, angle of repose and mass loss rate; and selecting and setting the structural parameters of the straight pipe or coil based on the target parameters.

[0038] Among them, selecting and setting the structural parameters of a straight pipe or a coil based on the target parameters includes: when the median particle size of the material is within a first preset interval and the particle size distribution uniformity coefficient is less than a first preset value, selecting a straight pipe for setting; the ratio of the inner diameter of the straight pipe to the material particle size is within a second preset interval, and the inclination angle of the straight pipe is within a third preset interval; when the median particle size of the material is not within the first preset interval or the particle size distribution uniformity coefficient is greater than the first preset value, selecting a coil for setting; calculating the ratio of the pitch of the coil to the tube diameter according to a preset calculation formula based on the angle of repose of the material; selecting the coil when the mass loss rate is greater than a second preset value, and selecting the straight pipe when the mass loss rate is less than or equal to the second preset value.

[0039] In one embodiment, when selecting and arranging straight pipes or coils in the smoke passage, it is necessary to consider the particle size distribution characteristics, flow properties and kinetic characteristics of the activation reaction of the material.

[0040] First, a laser particle size analyzer is used to determine the particle size distribution characteristics of the material. When the d50 particle size is in the range of 0.85-1.25 mm and the particle size distribution uniformity coefficient is less than 1.8, a straight tube is preferably set. This is because the material in this particle size range has good fluidity and can maintain stable flow at an inclination angle of 15-25 degrees without the need for additional mechanical conveying devices. The inner diameter of the straight tube should be selected to be 8-12 times the particle size of the material to ensure that the material can flow freely and will not form bridges.

[0041] When the d50 particle size of the material is less than 0.85mm or greater than 1.25mm, or the uniformity coefficient of particle size distribution is greater than 1.8, the coil setting should be selected. The ratio of the pitch of the coil to the tube diameter needs to be determined by calculating the repose angle θr of the material. The repose angle is determined experimentally by pouring the material on a horizontal plane to form a cone and measuring the angle between the cone and the horizontal plane. The ratio of the pitch S of the coil to the tube diameter D is calculated as: S / D = 2π × tan(θr - 5°), where θr is the repose angle of the material (unit: degree). This formula takes into account the slip effect of the material in the coil and reduces the repose angle by 5 degrees as a safety factor.

[0042] In addition, the kinetic characteristics of the activation reaction need to be considered. When the mass loss rate K of the material satisfies the following relationship: K = A × exp(-Ea / RT) × (1 - X) n × P m , where A is the pre-exponential factor (usually around 10 5 -10 7 s -1 range), Ea is the apparent activation energy (kJ / mol), R is the gas constant, T is the activation temperature (K), X is the conversion rate, P is the vapor partial pressure (MPa), n is the reaction order (usually between 0.5-1.5), and m is the vapor partial pressure index (usually between 0.3-0.8). When the calculated K value is greater than 0.015 s -1 When the K value is less than or equal to 0.015 s -1 When using the straight pipe setting, you can choose the straight pipe setting.

[0043] Figure 2 A schematic diagram of the structure of a synergistic activation device provided in an embodiment of the present application. It should be understood that the structure shown in the figure is exemplary and not restrictive. This means that the structure involved is not limited to a specific form or design, but is presented as an example. In other words, the structure shown in the figure can be regarded as a way of expression to clearly describe related concepts and relationships, and does not exclude other forms of structure. Therefore, when interpreting the structure in the picture, it should be understood that the structure has flexibility and diversity, and its purpose is to provide an exemplary description rather than a restrictive provision on a specific form.

[0044] The present application discloses a device applying the synergistic activation method as described in any of the above embodiments, comprising one or more sections of a furnace body 100, wherein a smoke channel 110 is provided in the furnace body, and an external furnace pipe 120 of a straight pipe or a coil is provided at the smoke channel; the furnace body has a feed end 101 and a discharge end 102, the area between the feed end 101 and the smoke channel 110 is used for heating the material, and the discharge end 102 is used for cooling the activated material; the external furnace pipe 120 is used to lead out the heated material and pass steam through one or more oxygen supply fans 200 for activation treatment and then return to the furnace body 100; the external furnace pipe 120 includes a forward pipe 121 and a reverse pipe 122, and the reverse pipe 122 is used to lead the activated material into the front end for re-activation.

[0045] In one embodiment, the furnace body 100 can be tilted, and the tilt angle is selected according to the fluidity of the material, which can be 15-45 degrees. A feeding device is provided at the feeding end 101 of the furnace body, and a discharging device is provided at the discharging end 102. A plurality of partitions are provided along the axial direction of the inner wall of the furnace body to form an independent flue gas channel 110. Each flue gas channel 110 is connected to the external pipeline system through a flange to ensure the sealed transportation of the material in the pipeline.

[0046] In the furnace external pipe 120 system, the straight pipe or coil is set at a position corresponding to the outlet of the flue gas channel. The straight pipe can be made of high temperature resistant metal material, and the inner diameter is selected according to the particle size of the material, generally 30-100mm. The coil can adopt a multi-turn spiral structure to increase the residence time of the material in the pipe. An insulation layer is set on the outer wall of the pipe to reduce heat loss.

[0047] In a preferred embodiment, the external furnace pipeline 120 further includes a nozzle device for introducing steam into the pipeline. The nozzle adopts an adjustable structure, and the amount and angle of steam introduced by the oxygen supply blower 200 can be adjusted according to process requirements. The number and spacing of the nozzles are determined according to the length of the pipeline to ensure that the steam is fully in contact with the material.

[0048] When the external furnace pipe 120 is selected as a coil / spiral pipe, a structure combining a forward spiral and a reverse spiral can be adopted. The forward pipe 121 is used for forward conveying and activation of materials, and the reverse pipe 122 is used for returning unqualified materials. The pitch of the spiral pipe is adjustable, which is convenient for controlling the material conveying speed and residence time.

[0049] In another implementation scenario, a sampling device and an online iodine value detection system are set at the last section of the external pipeline system. The sampling device adopts a pneumatic or electric control valve, which can sample materials without affecting the sealing of the system. The iodine value detection system includes a sample pretreatment unit, a detection unit and a data analysis unit to realize real-time monitoring of the activation degree of the material.

[0050] like Figure 2 As shown, steam is introduced into the material in the furnace body in sections. After the material is heated up in one stage, a straight pipe or coil outside the furnace is set at the flue gas channel 110, and the heated material is led into the straight pipe or coil, and steam is introduced to increase the utilization rate of steam; when the pipe for adding steam is a straight pipe, the high-temperature material in the furnace is led out by the inclination angle of the furnace body; N groups (N≥1) of heating and steam channels can be set; steam is added to the tube outside the furnace for external activation, and the material is returned to the furnace after sufficient activation, and the temperature is raised to the reaction temperature in the second stage, and a spiral pipe outside the furnace is set at the flue gas channel 110, and steam is added to the positive spiral pipe outside the furnace, and the material in the furnace that has been activated in the first stage is activated in the second stage, and the material is returned to the furnace for the next cycle of heating activation after sufficient activation.

[0051] In practical applications, the process parameters can be flexibly adjusted according to the material characteristics and process requirements: for materials of different particle sizes, the inclination angle of the furnace body and the inner diameter of the pipeline can be adjusted to ensure smooth material transportation. When the material particle size is large, the inclination angle and the inner diameter of the pipeline can be appropriately increased; when the particle size is small, it can be reduced accordingly. The amount of steam injection can be adjusted according to the moisture content of the material. When the moisture content of the material is high, the amount of steam injection can be appropriately reduced; when the moisture content is low, the injection amount can be increased. At the same time, by adjusting the nozzle angle, ensure uniform contact between steam and material. The residence time of the material in the pipeline can be controlled by adjusting the pitch of the spiral tube. When the activation time needs to be extended, the pitch can be reduced; when the material transportation needs to be accelerated, the pitch can be increased. During the operation of the system, a sealing device can be set at each pipeline interface to prevent steam leakage. An insulation layer is set on the outside of the pipeline to reduce heat loss and improve energy utilization efficiency.

[0052] Furthermore, the end of an external spiral tube is arranged in the N-1th flue gas channel of the furnace body to sample the material and test the iodine value of the material. When the iodine value of the material is insufficient, the material is introduced into the front activation stage through the reverse spiral tube (it can be a repetition of the last activation process or a repetition of the activation process of a specified section). If the iodine value of the material is qualified, the material is discharged and cooled.

[0053] In summary, the embodiment of the present application separates the product from the flue gas channel through structural changes, and the product is concentrated in a specific area, forcing and fully contacting the flue gas; and, after the material is heated to the reaction temperature, steam is added when it passes through the product channel (the product channel space is small), the steam and the material are in more complete contact, the carbon and steam are in contact for a long time, the steam can enter the carbon core, and the ineffective steam sprayed into the furnace cavity is reduced, so that the system cools down less, the energy consumption is reduced, and the utilization rate of the steam is greatly improved. The setting of the reverse spiral tube outside the furnace allows the material to be activated again through the return material when the iodine value is insufficient, which makes up for the problem of insufficient activation zone length.

[0054] The problem of high material consumption, repair and maintenance costs of the original 8 groups of 230 steam pipes in the ring pipes is overcome. The present application reduces the steam pipes and the corresponding electrical valve controls, thereby reducing production cost consumption. In the prior art, in order to further improve the effective utilization rate of steam, steam is sprayed only in areas with products through electrification control, and the failure rate of electrical control is high (there are 160 possible failure points every day in the normal production process), while the product of the present invention concentrates the channel to spray steam at fixed points, and the valve and control requirements are reduced.

[0055] Furthermore, an embodiment of the present application also provides a collaborative activation device, including: a processor, a memory, and a system bus; the processor and the memory are connected via the system bus; the memory is used to store one or more programs, and the one or more programs include instructions, which, when executed by the processor, enable the processor to execute any of the above methods.

[0056] Furthermore, an embodiment of the present application also provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute any one of the above-mentioned processing methods.

[0057] It can be known from the description of the above implementation mode that those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment method can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a disk, an optical disk, etc., including several instructions for enabling a computer device (which can be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0058] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0059] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for coordinated activation of activated carbon inside and outside a segmented furnace, characterized in that: include: The activated carbon material is heated through one end of the furnace body to make the material reach the reaction temperature; An external straight pipe or coil is arranged at the smoke passage of the furnace body to introduce the heated material into the straight pipe or coil; The high-temperature material in the furnace is led out to the straight tube or coil by the inclination angle of the furnace body; Steam is introduced into the straight tube or coil to enable the material to undergo activation reaction with the steam.

2. The synergistic activation method according to claim 1, characterized in that: Also includes: Equipped with a multi-stage furnace body, the materials that have completed the first activation are returned to the furnace body for multi-stage cycle heating activation; Take samples from the end of the furnace outer tube at the second-to-last flue gas channel for iodine value testing. If the standard is not met, return to the target activation stage for repeated activation. If the standard is met, output and cool down.

3. The synergistic activation method according to claim 2, characterized in that: in, Equipped with a multi-stage furnace body, the activated materials are returned to the furnace body for multi-stage cycle heating activation, including: The material that has completed the first activation reaction is returned to the second heating pipeline in the furnace body for second-stage heating; An outer furnace pipe is arranged at the second flue gas channel of the furnace body; Introducing the material after the second stage of heating into the outer tube of the furnace; Passing steam into the outer tube of the furnace to make the material and the steam undergo a second activation reaction; The material that has completed the second activation reaction is returned to the furnace body for the next cycle of temperature increase activation.

4. The synergistic activation method according to claim 2, characterized in that: in, If the target is not met, the system returns to the target activation stage and repeats the activation, including: When the iodine value of the material does not meet the standard, the material is returned to the target activation stage through a reverse spiral tube for repeated activation.

5. The synergistic activation method according to claim 1, characterized in that: Also includes: Determine the particle size distribution characteristics, measure the angle of repose and calculate the mass loss rate of the material to obtain the target parameters of the material, wherein the target parameters include the median particle size, the particle size distribution uniformity coefficient, the angle of repose and the mass loss rate; The structural parameters of the straight pipe or the coiled pipe are selected and set based on the target parameters.

6. The synergistic activation method according to claim 5, characterized in that: in, Selecting and setting structural parameters of the straight pipe or coil pipe based on the target parameters includes: When the median particle size of the material is within the first preset interval and the particle size distribution uniformity coefficient is less than the first preset value, a straight tube is selected for setting; The ratio of the inner diameter of the straight tube to the particle size of the material is within a second preset range, and the inclination angle of the straight tube is within a third preset range; When the median particle size of the material is not within the first preset interval or the particle size distribution uniformity coefficient is greater than the first preset value, a coil is selected for setting; According to the repose angle of the material, the ratio of the pitch to the diameter of the coil is calculated according to a preset calculation formula; When the mass loss rate is greater than a second preset value, the coiled tube is selected; and when the mass loss rate is less than or equal to the second preset value, the straight tube is selected.

7. The synergistic activation method according to claim 2, characterized in that: in, Take samples at the end of the furnace outer tube at the second-to-last flue gas channel for iodine value detection. If it does not meet the standard, return to the target activation stage for repeated activation, including: Collect material samples, transport them pneumatically to the iodine value tester, grind the samples, add iodine standard solution and shake, use a spectrophotometer to measure the absorbance and calculate the iodine value; According to the measured iodine value, the material is returned to the corresponding activation section at a preset speed and the steam flow is adjusted by setting the pitch ratio and inclination of the reverse spiral tube and the multi-channel diversion device.

8. The synergistic activation method according to claim 7, characterized in that: in, According to the measured iodine value, the reverse spiral tube and multi-channel diversion device with set pitch ratio and inclination angle are used to return the material to the corresponding activation section at a preset speed and adjust the steam flow rate, including: Arrange a reverse spiral tube and a multi-channel flow splitter that meet the predetermined inner diameter ratio, pitch ratio and inclination requirements; When the iodine value of the material is in the first iodine value interval, the material is returned to the entrance of the last activation stage through the reverse spiral tube at the first speed; When the iodine value of the material is in the second iodine value interval, the material is returned to the penultimate activation section at a second rotation speed through the multi-channel diversion device; When the iodine value of the material is lower than the lower limit of the second iodine value interval, the material is returned to the first activation section through the diversion device, and the steam flow rate of this section is increased.

9. A device for applying the synergistic activation method according to any one of claims 1 to 8, characterized in that: The invention comprises one or more furnace bodies (100), wherein a smoke passage (110) is provided in the furnace body, and an external furnace pipe (120) of a straight pipe or a coil is provided at the smoke passage; the furnace body comprises a feed end (101) and a discharge end (102), wherein the material is heated between the feed end (101) and the smoke passage (110), and the discharge end (102) is used for cooling the activated material; the external furnace pipe (120) is used for leading out the heated material and passing steam through one or more oxygen supply fans (200) for activation treatment, and then returning the material to the furnace body (100); the external furnace pipe (120) comprises a forward pipe (121) and a reverse pipe (122), wherein the reverse pipe (122) is used for leading the activated material to the front end for reactivation.

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