A method and apparatus for supplying air to a reaction zone in a kiln by means of a kiln wall

Abstract

The present application relates to rotary kiln technical field, disclose a kind of method and device for sending air to kiln reaction zone by rotary kiln kiln wall, the method includes: in the inner wall of rotary kiln kiln wall, uniformly provided with air supply wall, one end of air supply wall is provided with first air supply part, the other end of air supply wall is provided with second air supply part, temperature sensor is uniformly provided on air supply wall;Obtain raw material information and product quality standard;According to raw material information and product quality standard, preset combustion condition;Real-time acquisition of the temperature of each unit area on air supply wall, temperature evaluation coefficient is obtained according to the temperature of each unit area, and the degree of adaptation of temperature evaluation coefficient and combustion condition is judged, and the air supply temperature and air supply quantity of the air supply wall closest to unit area are adjusted in real time according to the degree of adaptation.The present application has the technical effect of accurately controlling and optimizing the preparation reaction process of activated carbon in kiln by sending air to kiln reaction zone through rotary kiln kiln wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rotary kiln, in particular to a method and device for feeding air to the reaction zone in a kiln through the kiln wall of a rotary kiln. BACKGROUND

[0002] In the prior art, when preparing activated carbon in a rotary furnace, the distribution of pore structure is often uneven. This is because the unevenness of temperature, air flow and material flow during the combustion process in the rotary furnace leads to uneven distribution of pores.

[0003] When preparing activated carbon in a rotary furnace, it is difficult to accurately control the size of the pores. This is because the combustion process in the rotary furnace is a complex physical and chemical process, and the formation and development of pores are affected by various factors, such as the properties of the raw materials, the combustion temperature and time, etc. The difficulty in accurately controlling these factors leads to the instability of the pore size.

[0004] Therefore, there is an urgent need for a method and device for feeding air to the reaction zone in a kiln through the kiln wall of a rotary kiln to solve the technical problem of difficulty in accurately controlling the standard of pores when preparing activated carbon in a rotary furnace in the prior art. SUMMARY

[0005] The purpose of the present application is to provide a method and device for feeding air to the reaction zone in a kiln through the kiln wall of a rotary kiln to solve the technical problem of difficulty in accurately controlling the standard of pores when preparing activated carbon in a rotary furnace in the prior art.

[0006] In one aspect, the present application provides a method for feeding air to the reaction zone in a kiln through the kiln wall of a rotary kiln, comprising:

[0007] A plurality of air feeding walls are uniformly arranged on the inner wall of the kiln wall of the rotary kiln, one end of each air feeding wall is provided with a first air feeding part, the other end of each air feeding wall is provided with a second air feeding part, and a temperature sensor is uniformly arranged on each air feeding wall;

[0008] Obtaining raw material information and product quality standards;

[0009] Setting the combustion conditions according to the raw material information and the product quality standards;

[0010] Real-time acquisition of the temperature of each unit area on the air feeding wall, evaluation of the heat balance according to the temperature of each unit area to obtain a temperature evaluation coefficient, and judgment of the degree of adaptation of the temperature evaluation coefficient to the combustion conditions, real-time adjustment of the air feeding temperature and air feeding amount of the air feeding wall closest to the unit area according to the degree of adaptation.

[0011] Preferably, the raw material information includes the type and surface area of the raw materials, and includes:

[0012] The raw material information includes multiple ingredients in the production raw material of the activated carbon, the mass Z of each ingredient i and the total mass C of the raw material, and the proportion W of each ingredient is obtained by calculation, wherein there are i ingredients, and the proportion W of each ingredient is obtained by calculation i ;

[0013] ;

[0014] The product quality standard includes the minimum porosity N min , the minimum specific surface area S min and the pore size distribution V, which includes the proportions of micropores, mesopores and macropores, and is calculated by the following formula:

[0015] ;

[0016] Wherein, V1 refers to the proportion of micropores, is the volume of micropores, is the total pore volume;

[0017] ;

[0018] Wherein, V2 refers to the proportion of mesopores, is the volume of mesopores, is the total pore volume;

[0019] ;

[0020] Wherein, V3 refers to the proportion of macropores, is the volume of macropores, is the total pore volume.

[0021] Preferably, the raw material surface area includes:

[0022] According to the preset unit area of the raw material surface area, the raw material surface area D is obtained, and the raw material surface area D is compared with the preset first raw material surface area D1 and the second raw material surface area D1, wherein D1

[0023] When the raw material surface area D is identified as D1, it is determined to start the operation;

[0024] When D1

[0025] When D2

[0026] Wherein, B1

[0027] Preferably, the preset combustion condition according to the raw material information and the product quality standard comprises:

[0028] a combustion weight temperature weight n is preset for each of the i ingredients i and a combustion time weight m i , and the proportion of each of the ingredients is obtained , and the standard preset combustion condition is calculated and obtained;

[0029] The standard preset combustion condition comprises:

[0030] a standard combustion temperature R, which is calculated by the following formula:

[0031] ;

[0032] wherein, is the standard combustion temperature of each of the ingredients;

[0033] a standard combustion time E, which is calculated by the following formula:

[0034] ;

[0035] wherein, G i is the standard combustion time of each of the ingredients.

[0036] Preferably, the preset combustion condition according to the raw material information and the product quality standard further comprises:

[0037] obtaining the proportion of macro-pores in the product quality standard V3, comparing it with a preset first macro-pore proportion Vg and a second macro-pore proportion Vh, wherein Vg

[0038] when V3≤Vg, a first reaction temperature correction coefficient P1 is set to correct the standard combustion temperature R, and the corrected standard combustion temperature is R×P1, and a first reaction time correction coefficient U1 is set to correct the standard combustion time E, and the corrected standard combustion time is E×U1;

[0039] when Vg

[0040] When V3>Vh, a third reaction temperature correction coefficient P3 is set to correct the standard combustion temperature R, and the corrected standard combustion temperature is RXP3; a third reaction time correction coefficient U3 is set to correct the standard combustion time E, and the corrected standard combustion time is EXU3.

[0041] Wherein, 1

[0042] Preferably, the proportion of micropores V1 and the proportion of mesopores V2 in the product quality standard are obtained, and the proportional difference AVc=V1-V2 of the proportion of micropores V1 and the proportion of mesopores V2 is calculated, wherein,

[0043] When AVc>0, the proportional difference AVc is compared with a preset first proportional difference Bc1, and the concentration of the activator and the activation time are set according to the comparison result;

[0044] When AVc≤Bc1, the concentration of the activator is set as a first activator concentration F1, and the activation time is set as a first activation time Y1;

[0045] When AVc>Bc1, the concentration of the activator is set as a second activator concentration F2, and the activation time is set as a second activation time Y2;

[0046] Wherein, F1

[0047] Preferably, the preset combustion condition according to the raw material information and the product quality standard further comprises:

[0048] When AVc≤0, the proportional difference AVc is compared with a preset second proportional difference Bc2, and the concentration of the activator and the activation time are set according to the comparison result;

[0049] When AVc≤Bc2, the concentration of the activator is set as a third activator concentration F3, and the activation time is set as a third activation time Y3;

[0050] When AVc>Bc2, the concentration of the activator is set as a fourth activator concentration F4, and the activation time is set as a fourth activation time Y4;

[0051] Wherein, F3>F4>F1, and Y3>Y4>Y1.

[0052] Preferably, the temperature of each unit area on the air supply wall is obtained in real time, and a temperature evaluation coefficient is obtained according to the evaluation of the heat balance of each unit area, comprising:

[0053] The real-time temperature value of each unit area on the kiln wall is obtained, a temperature matrix Ai of the induced draft wall area is established, and Ai Z is the number of air intake walls. Each pair of air intake walls includes x unit areas, and each air intake wall is divided into i unit areas along the long side of the kiln wall. A kiln wall region temperature matrix A (A1,A2,A3,...,Ai) is established.

[0054] In the kiln wall region temperature matrix A, the air induced draft wall region temperature matrix is ​​mapped to each of the kiln wall region temperature matrices to generate a unit area temperature matrix AW.

[0055] The temperature of each item in the unit area temperature matrix AW and its neighboring items are evaluated to generate a temperature evaluation coefficient Ap, which is calculated using the following formula:

[0056] ;

[0057] in, The first element in the temperature matrix AW per unit area represents the... Item, AW_neighbor Indicates the first The adjacent terms of a term, where N represents the number of adjacent terms.

[0058] Preferably, determining the compatibility between the temperature evaluation coefficient and the combustion conditions, and adjusting the air supply temperature and air volume of the air supply wall closest to the unit area in real time based on the compatibility, includes:

[0059] The temperature evaluation coefficient Ap is preset with a first evaluation standard Ap1B and a second evaluation standard Ap2B, where Ap1B < Ap2B. The temperature evaluation coefficient Ap is compared with the preset first evaluation standard Ap1B and the second evaluation standard Ap2B, and the suitability of the temperature evaluation coefficient with the combustion conditions is determined based on the comparison result.

[0060] When Ap≤Ap1B, the degree of fit between the temperature evaluation coefficient and the combustion conditions is determined to be the first degree of fit, and the air supply temperature of the second air supply section is set to the first air supply temperature wd1, and the air supply volume is set to the first air supply volume sf1.

[0061] When Ap1B < Ap ≤ Ap2B, the degree of fit between the temperature evaluation coefficient and the combustion conditions is determined to be the second degree of fit, and the air supply temperature of the second air supply section is set to the second air supply temperature wd2, and the air supply volume is set to the second air supply volume sf2.

[0062] When Ap > Ap2B, the compatibility between the temperature evaluation coefficient and the combustion conditions is determined to be the third compatibility, and the air supply temperature of the second air supply section is set to the third air supply temperature wd3, and the air supply volume is set to the third air supply volume sf3.

[0063] Wherein, wd1 < wd2 < wd3, and sf1 < sf2 < sf3.

[0064] In another aspect, the present application provides a device for supplying air to the reaction zone in the kiln through the kiln wall of a rotary kiln, comprising:

[0065] A plurality of air supply walls are evenly arranged on the inner wall of the kiln wall of the rotary kiln, one end of each air supply wall is provided with a first air supply part, the other end of each air supply wall is provided with a second air supply part, and a temperature sensor is arranged on each air supply wall;

[0066] An information acquisition unit acquires raw material information and product quality standards;

[0067] An information processing unit presets combustion conditions based on the raw material information and the product quality standards;

[0068] An air supply control unit acquires the temperature of each unit area on the air supply wall in real time, evaluates the heat balance based on the temperature of each unit area to obtain a temperature evaluation coefficient, judges the degree of adaptation of the temperature evaluation coefficient to the combustion conditions, and adjusts the air supply temperature and air supply amount of the air supply wall closest to the unit area in real time based on the degree of adaptation.

[0069] Compared with the prior art, the present application has the beneficial effects that by arranging air supply walls on the inner wall of the rotary kiln and presetting combustion conditions based on raw material information and product quality standards, accurate control and optimization of the reaction in the kiln can be achieved. This helps to improve the quality of the product and ensure that the desired quality standards such as porosity, specific surface area and pore size distribution are met.

[0070] By acquiring the temperature of each unit area on the air supply wall in real time and judging the degree of adaptation of the air supply wall to the combustion conditions based on the temperature evaluation coefficient, the air supply temperature and air supply amount of the air supply wall closest to the unit area can be adjusted in real time. This can dynamically adjust according to the actual situation to maintain the best combustion effect and energy consumption.

[0071] The present application also considers the preset unit area of the surface area of the raw material and sets different unit areas according to the preset surface area range. In addition, the activation time and activation temperature are corrected according to the proportion of macro-pores, micro-pores and mesopores in the product quality standards, and the concentration and activation time of the activator are set according to the difference between the proportions of micro-pores and mesopores. This can more accurately adapt to different raw materials and product quality requirements.

[0072] By accurately controlling and optimizing the reaction in the kiln, the method of the present application can improve the quality of the product and reduce energy consumption. By adjusting the air supply temperature and air supply amount of the air supply wall in real time, the best combustion effect and energy utilization efficiency can be ensured, thereby reducing production costs. BRIEF DESCRIPTION OF DRAWINGS

[0073] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to explain part of the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without any creative effort based on the provided drawings also belong to the protection scope of the present application.

[0074] Figure 1 is a flowchart of the method for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0075] Figure 2 is a function block diagram of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0076] Figure 3 is a first structural schematic diagram of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0077] Figure 4 is a second structural schematic diagram of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0078] Figure 5 is a third structural schematic diagram of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0079] Figure 6 is a structural schematic diagram of the air feeding wall of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application;

[0080] Figure 7 is a structural schematic diagram of the second air feeding part of the device for feeding air into the reaction zone in the kiln through the kiln wall of the rotary kiln according to the present application.

[0081] In the drawings, 1 is a tail smoke chamber, 11 is a flue opening, 12 is a second air feeding part, 13 is an air outlet, 21 is a first transmission drag wheel, 22 is a second transmission drag wheel, 3 is a cylinder, 31 is a feeding opening, 32 is an air feeding wall, 4 is a first air feeding part, 5 is an air feeding control unit, 6 is a kiln head cover, and 7 is a base. DETAILED DESCRIPTION

[0082] The technical solutions in the embodiments of the present application will be described clearly and completely below. 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 of ordinary skill in the art without any creative effort also belong to the protection scope of the present application.

[0083] The principle of the rotary furnace for preparing activated carbon in this embodiment is that oxygen-containing gas such as steam, flue gas (main component is CO2) or mixed gas thereof is used as an activating agent to contact with carbon at high temperature to perform oxidation-reduction reaction for activation, to generate carbon monoxide, carbon dioxide, hydrogen and other hydrocarbon compound gases, and to achieve the purpose of pore forming in carbon particles through carbon gasification reaction ("loss on ignition").

[0084] C + 2H2O 2H2 + CO2 - 18 kcal;

[0085] C + H2O H2 + CO - 31 kcal;

[0086] CO2 + C 2CO - 41 kcal;

[0087] The above three chemical reactions are all endothermic reactions, that is, with the progress of the activation reaction, the temperature of the activation reaction zone of the activated carbon activation furnace will gradually decrease, if the temperature of the activation zone is lower than 800°C, the above activation reaction cannot proceed normally, therefore, part of air and coal gas generated by activation need to be introduced into the activation reaction zone of the activation furnace to burn and supplement heat, or an external heat source is needed to supplement the activation temperature of the activation reaction zone of the activation furnace.

[0088] The activation reaction belongs to a heterogeneous reaction of gas-solid phase system, and the activation process includes physical and chemical processes, and the whole process includes diffusion of the activating agent in the gas phase to the outer surface of the carbonized material, diffusion of the activating agent to the inner surface of the carbonized material, adsorption of the activating agent by the inner and outer surfaces of the carbonized material, gasification reaction of the surface of the carbonized material to generate intermediate products (surface complexes), decomposition of the intermediate products into reaction products, desorption of the reaction products, diffusion of the desorbed reaction products from the inner surface to the outer surface of the carbonized material, and other processes, so that the activation reaction finally achieves the purpose of activation and pore forming through the following three stages.

[0089] The first stage: at high temperature, the activating gas first reacts with disordered carbon atoms and heteroatoms to open the pores blocked by disordered carbon atoms and heteroatoms formed during carbonization.

[0090] The second stage: the opened pores continuously expand, connect and develop in depth, and the carbon atoms at the edges of the pores are easy to react with the activating gas due to the unsaturated structure, thereby causing the pores to continuously expand and develop in depth.

[0091] The third stage: new pore formation, with the continuous progress of the activation reaction, new unsaturated carbon atoms or active points are exposed on the surface of the microcrystal, and then these new active points can react with other molecules of the activating gas, and the non-uniform combustion on the surface of the microcrystal continuously leads to the formation of new pores.

[0092] Referring to Figure 1As shown, the embodiment provides a method for feeding air to the reaction zone in the kiln through the kiln wall of the rotary kiln, comprising:

[0093] Step S1: uniformly setting a feeding wall on the inner wall of the rotary kiln, one end of the feeding wall is provided with a first feeding part, the other end of the feeding wall is provided with a second feeding part, and a temperature sensor is uniformly arranged on the feeding wall;

[0094] Step S2: obtaining raw material information and product quality standards;

[0095] Step S3: presetting the combustion condition according to the raw material information and the product quality standard;

[0096] Step S4: real-time acquisition of the temperature of each unit area on the feeding wall, evaluation of the thermal balance according to the temperature of each unit area to obtain a temperature evaluation coefficient, and judgment of the degree of adaptation of the temperature evaluation coefficient to the combustion condition, and real-time adjustment of the feeding temperature and the feeding amount of the feeding wall closest to the unit area according to the degree of adaptation.

[0097] Specifically, according to the raw material information and the product quality standard, the preset combustion condition can more accurately adapt to different raw materials and product quality requirements, which helps to improve the consistency and controllability of the product and ensures that the quality standards are met; by setting the feeding wall on the inner wall of the rotary kiln and presetting the combustion condition according to the raw material information and the product quality standard, accurate control and optimization of the reaction in the kiln can be realized. This will help to improve the product quality and ensure that the expected porosity, specific surface area and pore size distribution and other quality standards are met. In addition, according to the raw material information and the product quality standard, the preset combustion condition can more accurately adapt to different raw materials and product quality requirements. This helps to improve the consistency and controllability of the product and ensures that the quality standards are met.

[0098] In some embodiments of the present application, the raw material information and the product quality standard are obtained, the raw material information includes the raw material type and the raw material surface area, which includes:

[0099] The raw material information includes a plurality of ingredients in the production raw material of the activated carbon, the mass Z of each ingredient i and the total mass C of the raw material, and the proportion of each ingredient is obtained by calculation, wherein there are i kinds of ingredients, and the proportion W of each ingredient i is obtained by calculation.

[0100]

[0101] The product quality standard includes the minimum porosity N min , the minimum specific surface area S min and the pore size distribution V, the pore size distribution includes the proportion of micropores, mesopores and macropores, and the proportion of each ingredient is obtained by calculation according to the following formula:

[0102] ​ ;

[0103] V1 is the proportion of micropores, V1 is the volume of micropores, V1 is the total pore volume;

[0104] ;

[0105] V2 is the proportion of mesopores, V2 is the volume of mesopores, V2 is the total pore volume;

[0106] ;

[0107] V3 is the proportion of macropores, V3 is the volume of macropores, V3 is the total pore volume.

[0108] It can be understood that by calculating the proportion of each ingredient, it can be found which ingredients have a greater impact on the performance of activated carbon. Based on this information, the ratio of raw materials can be adjusted to obtain better pore structure, specific surface area and other activated carbon performance parameters, which helps to improve the adsorption performance, catalytic performance and other properties of activated carbon to meet the specific application requirements. Among them, the pore size distribution is the proportion of pores with different pore sizes in the pore structure of activated carbon. By defining the proportion of micropores, mesopores and macropores, the pore size distribution can be controlled to meet the specific application requirements. Pores with different pore sizes have different effects on the adsorption and transmission of various molecules, therefore, controlling the pore size distribution is crucial for customizing the adsorption performance of activated carbon.

[0109] In some embodiments of the present application, the raw material surface area includes:

[0110] According to the preset unit area of the raw material surface area, the raw material surface area D is obtained, the raw material surface area D is compared with the preset first raw material surface area D1 and the second raw material surface area D1, wherein D1

[0111] When the raw material surface area D is identified as D>D1, it is determined to start the operation;

[0112] When D1

[0113] When D2

[0114] Wherein, B1

[0115] It can be understood that the preset is made according to the actual situation of the raw material surface area. By comparing the raw material surface area with the preset first and second raw material surface areas, the unit area can be preset according to different situations. In this way, the operation and control can be more accurately carried out according to the raw material surface area to meet the requirements of production and process; when it is identified that the raw material surface area is greater than the preset first raw material surface area, it can be judged to start the operation. This means that the raw material surface area has reached a certain condition, and the subsequent production steps can be started. This helps to ensure that production activities are carried out under appropriate conditions, improving production efficiency and quality; when the first raw material surface area is less than the raw material surface area, and the raw material surface area is less than or equal to the second raw material surface area, the preset unit area is the first unit area. When the raw material surface area is greater than the second raw material surface area, the preset unit area is the second unit area. By presetting different unit areas according to the raw material surface area, more accurate operation and control can be carried out according to the actual situation to achieve better production effect.

[0116] In some embodiments of the present application, the combustion conditions are preset according to the raw material information and the product quality standard, including:

[0117] A combustion weight temperature weight n is preset for each ingredient in the i ingredients i And a combustion time weight m i , and the proportion of each ingredient is obtained , the standard preset combustion conditions are calculated and obtained;

[0118] The standard preset combustion conditions include:

[0119] The standard combustion temperature R is calculated by the following formula:

[0120] ;

[0121] Wherein, is the standard combustion temperature of each ingredient;

[0122] The standard combustion time E is calculated by the following formula:

[0123] ;

[0124] Wherein, G i is the standard combustion time of each ingredient.

[0125] Specifically, according to the combustion weight temperature weight and the combustion time weight of each ingredient, personalized combustion conditions can be set for each ingredient. This can better adapt to the characteristics and requirements of different ingredients, and achieve a more accurate combustion process. Moreover, by calculating the proportion of each ingredient and the standard combustion temperature and standard combustion time of the ingredient, the standard preset combustion conditions can be obtained. This helps to determine the temperature and time parameters in the combustion process to meet the requirements of the product quality standard. In addition, by setting the standard combustion temperature and combustion time, the combustion process can be optimized to improve the quality and performance of the product. Different ingredients may have different combustion characteristics in the combustion process, and by presetting personalized combustion conditions, the combustion process can be better controlled to ensure that the expected product quality standard is achieved.

[0126] In some embodiments of the present application, the combustion conditions are preset according to the raw material information and the product quality standard, further comprising:

[0127] The proportion V3 of macro-pores in the product quality standard is obtained, and compared with a pre-set first macro-pore proportion Vg and a second macro-pore proportion Vh, wherein Vg < Vh. According to the comparison result, the standard combustion time and the standard combustion temperature are corrected;

[0128] When V3 ≤ Vg, a first reaction temperature correction coefficient P1 is set to correct the standard combustion temperature R, and the corrected standard combustion temperature is R × P1. A first reaction time correction coefficient U1 is set to correct the standard combustion time E, and the corrected standard combustion time is E × U1;

[0129] When Vg < V3 ≤ Vh, a second reaction temperature correction coefficient P2 is set to correct the standard combustion temperature R, and the corrected standard combustion temperature is R × P2. A second reaction time correction coefficient U2 is set to correct the standard combustion time E, and the corrected standard combustion time is E × U2;

[0130] When V3 > Vh, a third reaction temperature correction coefficient P3 is set to correct the standard combustion temperature R, and the corrected standard combustion temperature is R × P3. A third reaction time correction coefficient U3 is set to correct the standard combustion time E, and the corrected standard combustion time is E × U3;

[0131] Wherein, 1 < P1 < P2 < P3 < 1.2, and 1 < U1 < U2 < U3 < 1.2.

[0132] In some embodiments of the present application, the proportion V1 of micro-pores and the proportion V2 of mesopores in the product quality standard are obtained, and the difference AVc = V1-V2 between the proportion V1 of micro-pores and the proportion V2 of mesopores is calculated, wherein,

[0133] When ∆Vc > 0, the proportional difference ∆Vc is compared with a preset first proportional difference Bc1, and the concentration of the activator and the activation time are set according to the comparison result;

[0134] When ∆Vc ≤ Bc1, the concentration of the activator is set as a first activator concentration F1, and the activation time is set as a first activation time Y1;

[0135] When ∆Vc > Bc1, the concentration of the activator is set as a second activator concentration F2, and the activation time is set as a second activation time Y2;

[0136] Wherein, F1 < F2, and Y1 < Y2.

[0137] In some embodiments of the present application, the combustion conditions are preset according to the raw material information and the product quality standard, further comprising:

[0138] When ∆Vc ≤ 0, the proportional difference ∆Vc is compared with a preset second proportional difference Bc2, and the concentration of the activator and the activation time are set according to the comparison result;

[0139] When ∆Vc ≤ Bc2, the concentration of the activator is set as a third activator concentration F3, and the activation time is set as a third activation time Y3;

[0140] When ∆Vc > Bc2, the concentration of the activator is set as a fourth activator concentration F4, and the activation time is set as a fourth activation time Y4;

[0141] Wherein, F3 > F4 > F1, and Y3 > Y4 > Y1.

[0142] In some embodiments of the present application, the temperature of each unit area on the air supply wall is obtained in real time, and the temperature evaluation coefficient is obtained by evaluating the heat balance according to the temperature of each unit area, comprising:

[0143] The real-time temperature value on each unit area of the kiln wall is obtained, the temperature matrix Ai of the induced draft wall area is established, and Ai is set Wherein, Z is the number of induced draft walls, and each induced draft wall is divided into i unit areas along the long side of the kiln wall, and the temperature matrix A of the kiln wall area (A1, A2, A3,..., Ai) is established.

[0144] In the kiln wall area temperature matrix A, the induced draft wall area temperature matrix is mapped into each kiln wall area temperature matrix to generate a unit area temperature matrix AW;

[0145] And the temperature of each item in the unit area temperature matrix AW and its adjacent items is evaluated to generate a temperature evaluation coefficient Ap, which is obtained by the following formula:

[0146] ;

[0147] wherein, represents the first term in the temperature matrix AW per unit area, AW_neighbor represents the first adjacent term, and N represents the number of adjacent terms.

[0148] In some embodiments of the present application, the degree of adaptation of the temperature evaluation coefficient to the combustion condition is determined, and the air supply temperature and the air supply amount of the air supply wall closest to the unit area are adjusted in real time according to the degree of adaptation, comprising:

[0149] wherein, for the temperature evaluation coefficient Ap, a first evaluation standard Ap1B and a second evaluation standard Ap2B are preset, wherein Ap1B < Ap2B, the temperature evaluation coefficient Ap is compared with the preset first evaluation standard Ap1B and the second evaluation standard Ap2B, and the degree of adaptation of the temperature evaluation coefficient to the combustion condition is determined according to the comparison result;

[0150] when Ap ≤ Ap1B, the degree of adaptation of the temperature evaluation coefficient to the combustion condition is determined as a first degree of adaptation, the air supply temperature of the second air supply part is set as a first air supply temperature wd1, and the air supply amount is set as a first air supply amount sf1;

[0151] when Ap1B < Ap ≤ Ap2B, the degree of adaptation of the temperature evaluation coefficient to the combustion condition is determined as a second degree of adaptation, the air supply temperature of the second air supply part is set as a second air supply temperature wd2, and the air supply amount is set as a second air supply amount sf2;

[0152] when Ap > Ap2B, the degree of adaptation of the temperature evaluation coefficient to the combustion condition is determined as a third degree of adaptation, the air supply temperature of the second air supply part is set as a third air supply temperature wd3, and the air supply amount is set as a third air supply amount sf3;

[0153] wherein, wd1 < wd2 < wd3, and sf1 < sf2 < sf3.

[0154] Referring to Figure 2 , in another aspect, the present embodiment provides a device for supplying air to a reaction zone in a kiln through a kiln wall of a rotary kiln, comprising:

[0155] The air supply wall is uniformly provided on the inner wall of the kiln wall of the rotary kiln, one end of the air supply wall is provided with a first air supply part, the other end of the air supply wall is provided with a second air supply part, and a temperature sensor is uniformly provided on the air supply wall.

[0156] An information acquisition unit acquires raw material information and product quality standards;

[0157] An information processing unit presets a combustion condition according to the raw material information and the product quality standards;

[0158] The air supply control unit obtains the temperature of each unit area of the air supply wall in real time, evaluates the temperature evaluation coefficient according to the temperature of each unit area, judges the degree of adaptation of the temperature evaluation coefficient to the combustion condition, and adjusts the air supply temperature and the air supply amount of the air supply wall closest to the unit area in real time according to the degree of adaptation.

[0159] Referring to Figures 3-7 As shown in the drawings, in some embodiments of the present application, the device for supplying air to the reaction zone in the kiln through the kiln wall of the rotary kiln further comprises:

[0160] The cylinder 3 is provided with a second transmission drag wheel 22 at the front end of the middle part and a first transmission drag wheel 21 at the rear end of the middle part. The tail smoke chamber 1 is arranged at the tail of the cylinder 3, and the flue port 11 is arranged at the top of the tail smoke chamber 1. The inner surface of the cylinder 3 is provided with a plurality of air supply walls 32, preferably four air supply walls 32 in this embodiment. The rear end of the air supply wall 32 is provided with a second air supply part 12, wherein the second air supply part 12 is provided with air outlets 13 on both sides of each air supply wall 32. One side of the front end of the cylinder 3 is provided with a feeding port 31. The rear of the feeding port of the cylinder 3 is provided with a first air supply part 4. One side of the first air supply part is provided with a kiln head cover 6. The top of the cylinder 3 is provided with an air supply control unit 5. The bottom of the cylinder 3 is provided with a base 7.

[0161] It can be understood that the first air supply part 4 is provided with a fan for assisting air supply. The second air supply part 12 is internally provided with a blower to achieve the air supply effect. In addition, the second air supply part is internally provided with a heat auxiliary module for delivering hot air to the kiln wall.

[0162] Compared with the prior art, the beneficial effects of the present embodiment are that by arranging air supply walls on the inner wall of the rotary kiln and pre-setting the combustion condition according to the raw material information and the product quality standard, the precise control and optimization of the kiln reaction can be realized. This helps to improve the product quality and ensure that the expected quality standards such as porosity, specific surface area and pore size distribution are met.

[0163] By obtaining the temperature of each unit area of the air supply wall in real time and judging the degree of adaptation of the air supply wall to the combustion condition according to the temperature evaluation coefficient, the air supply temperature and the air supply amount of the air supply wall closest to the unit area can be adjusted in real time. In this way, dynamic adjustment can be made according to the actual situation to maintain the best combustion effect and energy consumption.

[0164] The present embodiment also considers the pre-set unit area of the surface area of the raw material, and sets different unit areas according to the pre-set surface area range. In addition, the activation time and the activation temperature are corrected according to the proportion of macro-pores, micro-pores and mesopores in the product quality standard, and the concentration and activation time of the activator are set according to the difference between the proportions of micro-pores and mesopores. In this way, different raw materials and product quality requirements can be more accurately adapted to.

[0165] By precisely controlling and optimizing the reactions within the kiln, the method of the present embodiment can improve the product quality and reduce energy consumption. By adjusting the air supply temperature and air supply amount of the air supply wall in real time, the optimal combustion effect and energy utilization efficiency can be ensured, thereby reducing the production cost.

[0166] Those skilled in the art will understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) containing computer usable program code.

[0167] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus generate a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 means for carrying out the functions specified in the flowchart

[0168] These computer program instructions can also be stored in a computer-readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including instruction means, which implements the functions specified in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 means for carrying out the functions specified in the flowchart

[0169] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable data processing apparatus to produce a computer-implemented process, so that the instructions executed on the computer or other programmable data processing apparatus provide a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 one or more flows and / or blocks Figure 1 means for carrying out the functions specified in the flowchart

[0170] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit it. Although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered in the protection scope of the claims of the present application.

Claims

1. A method of supplying air to a reaction zone in a kiln by means of a kiln wall, characterized in that, The application relates to a rotary kiln wall temperature control system. The application comprises the following steps: Obtaining raw material information and product quality standards; Presetting combustion conditions according to the raw material information and the product quality standards; Real-time acquisition of the temperature of each unit area on the air supply wall, evaluation of the heat balance according to the temperature of each unit area to obtain a temperature evaluation coefficient, and judgment of the degree of adaptation of the temperature evaluation coefficient to the combustion conditions, real-time adjustment of the air supply temperature and the air supply amount of the air supply wall closest to the unit area according to the degree of adaptation; The presetting of the combustion conditions according to the raw material information and the product quality standards comprises the following steps: A combustion weight temperature weight n is preset for each of i ingredients i And a combustion time weight m i And the proportion of each of the ingredients is obtained The standard preset combustion condition is calculated The standard preset combustion conditions comprise the following steps: The standard combustion temperature R is obtained through the following formula: ； wherein, is the standard combustion temperature of each of said ingredients; The standard combustion time E is obtained through the following formula: ； wherein G i is the standard burn time of each of the ingredients; Real-time acquisition of the temperature of each unit area on the air supply wall, evaluation of the heat balance according to the temperature of each unit area to obtain a temperature evaluation coefficient, and judgment of the degree of adaptation of the temperature evaluation coefficient to the combustion conditions, real-time adjustment of the air supply temperature and the air supply amount of the air supply wall closest to the unit area according to the degree of adaptation, comprises the following steps: The real-time temperature value on each unit area of the kiln wall is acquired, a temperature matrix Ai of the induced draft wall area is established, Ai is set , , , ), wherein Z is the number of the induced draft walls, x unit areas are included between every two of the induced draft walls, and each of the induced draft walls is divided into i unit areas along the long side of the kiln wall, a kiln wall area temperature matrix A (A1, A2, A3,..., Ai) is established; In the kiln wall area temperature matrix A, the air supply wall area temperature matrix is mapped to each kiln wall area temperature matrix to generate a unit area temperature matrix AW; The temperature evaluation coefficient Ap is obtained through the following formula: ； Among them, AW(i, ) represents the (i, )th element in the temperature matrix AW per unit area. ) item, AW_neighbor(i, ) represents the (i, The adjacent terms of the first term, where N represents the number of adjacent terms; The degree of adaptation of the temperature evaluation coefficient to the combustion conditions is judged according to the degree of adaptation, and the air supply temperature and the air supply amount of the air supply wall closest to the unit area are adjusted in real time, which comprises the following steps: The first evaluation standard Ap1B and the second evaluation standard Ap2B are preset for the temperature evaluation coefficient Ap, wherein Ap1B < Ap2B, the temperature evaluation coefficient Ap is compared with the preset first evaluation standard Ap1B and the second evaluation standard Ap2B, and the degree of adaptation of the temperature evaluation coefficient to the combustion conditions is judged according to the comparison result; When Ap <= Ap1B, the degree of adaptation of the temperature evaluation coefficient to the combustion conditions is judged as a first degree of adaptation, the air supply temperature of the second air supply part is set as a first air supply temperature wd1, and the air supply amount is set as a first air supply amount sf1; When Ap1B < Ap <= Ap2B, the degree of adaptation of the temperature evaluation coefficient to the combustion conditions is judged as a second degree of adaptation, the air supply temperature of the second air supply part is set as a second air supply temperature wd2, and the air supply amount is set as a second air supply amount sf2; When Ap > Ap2B, the degree of adaptation of the temperature evaluation coefficient to the combustion conditions is judged as a third degree of adaptation, the air supply temperature of the second air supply part is set as a third air supply temperature wd3, and the air supply amount is set as a third air supply amount sf3; Wherein, wd1 < wd2 < wd3, and sf1 < sf2 < sf3.

2. The method of claim 1, wherein the method further comprises: The raw material information comprises the raw material type and the raw material surface area, and the raw material surface area comprises the following steps: The raw material information includes a plurality of ingredients in the production raw material of the activated carbon, a mass Z of each of the ingredients i and a total mass C of the raw material, and the proportion W of each of the ingredients is obtained by calculation, wherein there are i ingredients in total i The proportion W of each of the ingredients is obtained by calculation according to the following formula; ； The product quality standards include a minimum porosity N min , a minimum specific surface area S min , and a pore size distribution V, which includes the proportions of micropores, mesopores and macropores, calculated in particular by the following formula: ； V1 is the volume fraction of micropores, V1 is the volume fraction of micropores, V1 is the volume fraction of micropores, ； V2 is a volume of the mesopores, V2 is a volume of the mesopores, V2 is a volume of the mesopores, ； V3 is the proportion of macro-pores, V3 is the proportion of macro-pores, V3 is the proportion of macro-pores.

3. The method of claim 2, wherein the method further comprises, The raw material surface area comprises the following steps: According to the preset unit area of the raw material surface area, the raw material surface area D is obtained, the raw material surface area D is compared with the preset first raw material surface area D1 and the second raw material surface area D1, wherein D1 When the raw material surface area D is greater than D1, it is determined to start the operation; When D1 is less than D and greater than or equal to D2, the unit area is the first unit area B1; When D2 is less than D, the unit area is the second unit area B2; Wherein, B1 is less than B2.

4. The method of claim 1, wherein the method further comprises, According to the raw material information and the product quality standard, the combustion condition is preset, which further comprises: The proportion of macro-pores V3 in the product quality standard is obtained, which is compared with the preset first macro-pore proportion Vg and the second macro-pore proportion Vh, wherein Vg is less than Vh, and the standard combustion time and the standard combustion temperature are corrected according to the comparison result; When V3 is less than or equal to Vg, the first reaction temperature correction coefficient P1 is used to correct the standard combustion temperature R, and the corrected standard combustion temperature is R*P1; the first reaction time correction coefficient U1 is used to correct the standard combustion time E, and the corrected standard combustion time is E*U1; When Vg is less than V3 and greater than or equal to Vh, the second reaction temperature correction coefficient P2 is used to correct the standard combustion temperature R, and the corrected standard combustion temperature is R*P2; the second reaction time correction coefficient U2 is used to correct the standard combustion time E, and the corrected standard combustion time is E*U2; When V3 is greater than Vh, the third reaction temperature correction coefficient P3 is used to correct the standard combustion temperature R, and the corrected standard combustion temperature is R*P3; the third reaction time correction coefficient U3 is used to correct the standard combustion time E, and the corrected standard combustion time is E*U3; Wherein, 1 5. The method of claim 1, wherein the method further comprises: Obtaining the proportion V1 of micropores and the proportion V2 of mesopores in the product quality standard, and calculating the proportional difference of the proportion V1 of micropores and the proportion V2 of mesopores Vc=V1-V2, wherein, When When Vc>0, the ratio difference Vc is compared with a preset first ratio difference Bc1, and the concentration of the activator and the activation time are set according to the comparison result. When When Vc≤Bc1, the concentration of the activator is set as the first activator concentration F1, and the activation time is set as the first activation time Y1. When When Vc > Bc1, the concentration of the activator is set as the second activator concentration F2, and the activation time is set as the second activation time Y2. Wherein, F1 is less than F2, and Y1 is less than Y2.

6. The method of claim 5, wherein the method further comprises, According to the raw material information and the product quality standard, the combustion condition is preset, which further comprises: When The ratio difference AVc is compared with a preset second ratio difference Bc2 when Vc≤0, and the concentration of the activator and the activation time are set according to the comparison result. When When Vc≤Bc2, the concentration of the activator is set as a third activator concentration F3, and the activation time is set as a third activation time Y3. When When Vc > Bc2, the concentration of the activator is set as a fourth activator concentration F4, and the activation time is set as a fourth activation time Y4. Wherein, F3 is greater than F4 and F1, and Y3 is greater than Y4 and Y1.

7. An apparatus for supplying air to a reaction zone in a kiln through a kiln wall of a rotary kiln for use in a method for supplying air to a reaction zone in a kiln through a kiln wall of a rotary kiln as claimed in any one of claims 1 to 6, characterised in that, It comprises: A plurality of air supply walls are uniformly arranged on the inner wall of the rotary kiln wall, one end of each air supply wall is provided with a first air supply part, and the other end of each air supply wall is provided with a second air supply part; a temperature sensor is arranged on each air supply wall; An information acquisition unit acquires raw material information and product quality standards; An information processing unit presets a combustion condition according to the raw material information and the product quality standard; An air supply control unit acquires the temperature of each unit area on the air supply wall in real time, evaluates the heat balance according to the temperature of each unit area to obtain a temperature evaluation coefficient, judges the degree of adaptation of the temperature evaluation coefficient to the combustion condition, and adjusts the air supply temperature and the air supply amount of the air supply wall closest to the unit area in real time according to the degree of adaptation.

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