A flue gas acid gas removal method, system, intelligent terminal and storage medium

Abstract

The application relates to a flue gas acid gas removal method, a system, an intelligent terminal and a storage medium, relates to the technical field of acid gas removal, and the method comprises the following steps: acquiring the acid gas concentration of flue gas in a reaction flue in real time, and determining the acid removal agent demand according to the acid gas concentration; opening a bin valve to make the acid removal agent fall from the bin to a weighing device; detecting the cumulative weight of the acid removal agent in real time through the weighing device; adjusting the bin valve according to the cumulative weight to make the acid removal agent be conveyed to a grinding device at a preset conveying amount; grinding the acid removal agent through the grinding device to obtain acid removal agent powder; and blowing the acid removal agent powder to the reaction flue according to the acid removal agent demand to react and neutralize the acid gas in the reaction flue, so that the acid gas concentration of flue gas discharged from the reaction flue is less than a preset concentration. The application has the effect of ensuring that the acid removal agent and the acid gas fully react while reducing the waste of the acid removal agent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of acid gas removal, in particular to a flue gas acid gas removal method, system, intelligent terminal and storage medium. BACKGROUND

[0002] With the saturation of the number of domestic household waste incineration disposal plants, many household waste incineration disposal plants have insufficient household waste production. In order to maintain the production needs of enterprises, a large amount of industrial sludge, large garbage, decoration garbage, industrial solid waste and other industrial waste enter the waste incineration disposal plant for blending and burning. Due to the complex and variable composition of these wastes, a large amount of fossil energy waste residue components, the content of acid gases such as sulfur dioxide in the flue gas is too high, and the acid gases in the flue gas need to be removed.

[0003] In the prior art, the deacidifying agent (such as sodium bicarbonate) is usually sprayed into the reaction flue to react with the acid gases in the flue gas. However, there are still deficiencies in the control of the addition of the deacidifying agent. Most systems use fixed proportioning or experience-based estimation to add materials, and cannot respond to the real-time changes of the concentration of acid gases (such as sulfur dioxide) in the flue gas, which is prone to the following problems: on the one hand, if the sodium bicarbonate is not added enough, the acid gases will not be fully neutralized, the emission concentration will exceed the standard, and the environmental protection risk will increase; on the other hand, if the deacidifying agent is added in excess, it is easy to cause waste of the deacidifying agent. SUMMARY

[0004] In order to ensure that the deacidifying agent and the acid gases are fully reacted while reducing the waste of the deacidifying agent, the present application provides a flue gas acid gas removal method, system, intelligent terminal and storage medium.

[0005] In a first aspect, the present application provides a flue gas acid gas removal method, which adopts the following technical solution:

[0006] A flue gas acid gas removal method, comprising:

[0007] Real-time acquisition of the acid gas concentration of the flue gas in the reaction flue, and determination of the deacidifying agent requirement according to the acid gas concentration;

[0008] Controlling the opening of the silo valve to make the deacidifying agent fall from the silo to the weighing device;

[0009] Real-time detection of the cumulative weight of the deacidifying agent by the weighing device;

[0010] Adjusting the silo valve according to the cumulative weight to make the deacidifying agent be transported to the grinding device at a preset transportation amount;

[0011] Grinding the deacidifying agent by the grinding device to obtain deacidifying agent powder;

[0012] According to the amount of deacidification agent required, the deacidification agent powder is blown into the reaction flue to react and neutralize the acid gas in the reaction flue, so that the concentration of acid gas in the flue gas discharged from the reaction flue is less than the preset concentration.

[0013] By adopting the above technical scheme, the concentration of acid gas in the reaction flue is obtained and the amount of deacidification agent required is determined, and the cumulative weight of the deacidification agent is detected in real time by the weighing device, so that the deacidification agent can be conveyed at a preset conveying amount and ground into deacidification agent powder. According to the amount of deacidification agent required, the deacidification agent powder is introduced into the reaction flue. On the one hand, using the deacidification agent powder can increase the contact area with the acid gas and improve the reaction efficiency. On the other hand, it can improve the deacidification efficiency of the flue gas acid gas and reduce the waste of deacidification agent.

[0014] Optionally, the speed of the flue gas entering the reaction flue is obtained to obtain the flue gas entering speed;

[0015] The deacidification agent powder is controlled to be input into the reaction flue in a preset tangent direction, so that the flue gas in the reaction flue forms a cyclone;

[0016] In the case where the flue gas entering speed is greater than the preset upper limit speed, the input direction of the deacidification agent powder is adjusted to deflect toward the flue gas inlet direction;

[0017] In the case where the flue gas entering speed is less than the preset lower limit speed, the input direction of the deacidification agent powder is adjusted to deflect toward the flue gas outlet direction.

[0018] By adopting the above technical scheme, by controlling the deacidification agent powder to be input into the reaction flue in a preset tangent direction, the deacidification agent powder and the flue gas can rotate together to form a cyclone, thereby increasing the contact time of the deacidification agent powder and the flue gas, so that the deacidification agent powder and the flue gas are in sufficient contact, thereby improving the effect of the neutralization reaction of the deacidification agent powder and the acid gas.

[0019] Optionally, the reaction flue has a flue gas inlet pipe for flue gas to enter, and the method further comprises:

[0020] The flue gas in the flue gas inlet pipe is intercepted for a preset inlet length to obtain pre-detected flue gas;

[0021] The pre-detected flue gas is detected for acid gas concentration according to a preset interval distance to obtain an acid gas concentration set;

[0022] The amount of deacidification agent powder introduced is determined according to the acid gas concentration set to obtain a deacidification agent powder introduction amount set;

[0023] The deacidification agent powder introduction time is obtained according to the preset interval distance;

[0024] The deacidifying agent powder is introduced into the reaction flue according to the amount of the deacidifying agent powder introduced and the time of introducing the deacidifying agent powder.

[0025] By using the above technical solution, the concentration of the acid gas in the flue gas is obtained in advance before the flue gas enters the reaction flue, the amount of the deacidifying agent powder is determined according to the obtained concentration of the acid gas, and the deacidifying agent powder is introduced into the reaction flue in combination with the time of introducing the deacidifying agent powder, so as to adjust the amount of the deacidifying agent according to the concentration of the acid gas, and to reduce the waste of the deacidifying agent powder while the deacidifying agent powder can fully react with the acid gas in the flue gas.

[0026] Optionally, the reaction flue is also connected with a powder inlet pipe for introducing the deacidifying agent powder and a plurality of powder inlet sub-pipes connected with the powder inlet pipe and the reaction flue, and the method further comprises:

[0027] obtaining the concentration distribution of the acid gas in the reaction flue;

[0028] determining the amount of the deacidifying agent powder introduced into each powder inlet sub-pipe according to the concentration distribution, to obtain the amount of the powder inlet sub-pipe;

[0029] introducing the deacidifying agent powder into the reaction flue according to the amount of the powder inlet sub-pipe.

[0030] By using the above technical solution, the amount of the deacidifying agent powder corresponding to different positions can be determined based on the concentration distribution of the acid gas, so that the deacidifying agent powder can react with the acid gas in the corresponding area after entering the reaction flue from the powder inlet sub-pipe, thereby improving the deacidification efficiency of the flue gas.

[0031] Optionally, the reaction flue has a flue gas outlet pipe for the flue gas to enter, and the flue gas outlet pipe is provided with an outlet branch pipe connected with the powder inlet pipe, and the method further comprises:

[0032] obtaining the concentration of the acid gas in the flue gas outlet pipe in real time, to obtain an outlet concentration;

[0033] determining whether the outlet concentration is less than a preset concentration;

[0034] If not, the flue gas with the outlet concentration not less than the preset concentration is intercepted to obtain intercepted flue gas;

[0035] controlling the intercepted flue gas to pass to the outlet branch pipe, so that the intercepted flue gas is introduced into the reaction flue synchronously with the deacidifying agent powder.

[0036] By using the above technical solution, in the case that the outlet concentration is not less than the preset concentration, the intercepted flue gas is controlled to pass to the outlet branch pipe and then to the powder inlet pipe, and the intercepted flue gas is introduced into the reaction pipe synchronously with the deacidifying agent powder, so that the intercepted flue gas can fully contact with the deacidifying agent powder during the conveying process in the powder inlet pipe, thereby greatly reducing the concentration of the acid gas in the flue gas.

[0037] Optionally, the increase amount of the deacidification agent powder is determined according to the pre-consumption amount;

[0038] The time for intercepting the flue gas with a concentration not less than the preset concentration is obtained, and the interception time is obtained.

[0039] The deacidification agent powder is added to the powder inlet pipe according to the interception time and the increase amount.

[0040] By adopting the above technical solution, in the process of controlling the interception of the flue gas into the outlet branch pipe, the pre-consumption amount of the deacidification agent powder can be obtained in real time based on the outlet concentration, so as to obtain the increase amount of the deacidification agent powder, and the deacidification agent powder is added in combination with the interception time, which can reduce the problem that the deacidification agent powder is reduced due to the reaction of the interception flue gas with the deacidification agent powder in the powder inlet pipe, and ensures that sufficient deacidification agent powder is added into the reaction pipe to participate in the neutralization reaction, thereby improving the stability of removing acid gas.

[0041] Optionally, the real-time weight change curve is obtained according to the cumulative weight;

[0042] Whether there is an abnormal increase section is determined according to the real-time weight change curve;

[0043] If there is, the rejection height is determined according to the abnormal increase section;

[0044] The deacidification agent on the weighing device is subjected to a rejection operation according to the rejection height;

[0045] The opening and closing degree of the bin valve is adjusted according to the real-time weight change curve, so that the real-time weight change curve returns to the initial change state.

[0046] By adopting the above technical solution, in the case that the real-time weight change curve has an abnormal increase section, it indicates that there may be large-particle deacidification agent or caked deacidification agent, so the rejection height is obtained according to the abnormal increase section, and the deacidification agent is subjected to a rejection operation according to the rejection height, so as to reject the large-particle deacidification agent or the caked deacidification agent, which helps to reduce the probability that the grinding device cannot grind the large-particle deacidification agent or the first material conveying pipe is blocked, so that the conveying and grinding operations of the deacidification agent are relatively smooth.

[0047] In a second aspect, the present application provides a flue gas acid gas removal system, which adopts the following technical solution:

[0048] A flue gas acid gas removal system, comprising:

[0049] An acquisition module for acquiring the concentration of acid gas and the cumulative weight;

[0050] A memory for storing the program of the flue gas acid gas removal method;

[0051] a processor, a program in the memory can be loaded and executed by the processor to implement the flue gas acid gas removal method.

[0052] By adopting the technical scheme, the acid gas concentration in the reaction flue is acquired, the demand amount of the deacidifying agent is determined, and the cumulative weight of the deacidifying agent is detected in real time by the weighing device, so that the deacidifying agent can be conveyed at a preset conveying amount and ground into deacidifying agent powder, and the deacidifying agent powder is introduced into the reaction flue according to the demand amount of the deacidifying agent. On the one hand, the use of the deacidifying agent powder can increase the contact area with the acid gas and improve the reaction efficiency. On the other hand, the deacidification efficiency of the flue gas acid gas can be improved and the waste of the deacidifying agent can be reduced.

[0053] In a third aspect, the present application provides an intelligent terminal, which adopts the technical scheme as follows:

[0054] An intelligent terminal comprises a memory and a processor, and the memory stores a computer program capable of being loaded and executed by the processor to implement the method according to any one of the above.

[0055] In a fourth aspect, the present application provides a computer storage medium, which can store a corresponding program and has the characteristics of facilitating the reduction of waste of the deacidifying agent while ensuring that the deacidifying agent and the acid gas are fully reacted. The technical scheme is as follows: a computer readable storage medium stores a computer program capable of being loaded and executed by a processor to implement any one of the flue gas acid gas removal methods.

[0056] In summary, the present application has at least one of the following beneficial technical effects:

[0057] By acquiring the acid gas concentration in the reaction flue and determining the demand amount of the deacidifying agent, and combining the weighing device to detect the cumulative weight of the deacidifying agent in real time, the deacidifying agent can be conveyed at a preset conveying amount and ground into deacidifying agent powder, and the deacidifying agent powder is introduced into the reaction flue according to the demand amount of the deacidifying agent. On the one hand, the use of the deacidifying agent powder can increase the contact area with the acid gas and improve the reaction efficiency. On the other hand, the deacidification efficiency of the flue gas acid gas can be improved and the waste of the deacidifying agent can be reduced.

[0058] By controlling the deacidifying agent powder to be input into the reaction flue in a preset tangent direction, the deacidifying agent powder and the flue gas can be rotated together to form a cyclone, so that the contact time of the deacidifying agent powder and the flue gas can be increased, the deacidifying agent powder and the flue gas can be contacted more fully, and the effect of the neutralization reaction of the deacidifying agent powder and the acid gas can be improved.

[0059] In the case that the out-gas concentration is not less than the preset concentration, the trapped flue gas is controlled to pass into the powder feeding pipe after the out-gas branch pipe and then into the powder feeding pipe, and the trapped flue gas can be in full contact with the deacidification agent powder during the transportation in the powder feeding pipe, so as to greatly reduce the concentration of acid gas in the flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 is a structural schematic diagram of a flue gas acid gas removal device in the embodiment of the present application.

[0061] Figure 2 is a flow schematic diagram of a flue gas acid gas removal method in the embodiment of the present application.

[0062] Figure 3 is a flow schematic diagram of a cyclone reaction method in the embodiment of the present application.

[0063] Figure 4 is a flow schematic diagram of a deacidification agent powder feeding amount adjustment method in the embodiment of the present application.

[0064] Figure 5 is a flow schematic diagram of a deacidification agent powder feeding method according to the concentration distribution in the embodiment of the present application.

[0065] Figure 6 is a flow schematic diagram of a backflow reaction method in the embodiment of the present application.

[0066] Figure 7 is a flow schematic diagram of a deacidification agent powder supplement method in the embodiment of the present application.

[0067] Figure 8 is a flow schematic diagram of a deacidification agent rejection method in the embodiment of the present application.

[0068] Reference signs: 1, stock bin; 11, first material feeding pipe; 12, stock bin valve; 2, weighing device; 21, second material feeding pipe; 3, grinding device; 4, blowing device; 5, reaction flue; 51, powder feeding pipe; 511, powder feeding sub-pipe; 52, flue gas inlet pipe; 53, flue gas outlet pipe. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will combine the attached drawings to further describe the present application in detail. Figure 1 -attached Figure 8 and examples. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

[0070] The embodiment of the present application discloses a flue gas acid gas removal device. Referring to Figure 1The flue gas acid gas removal device comprises a stock bin 1, a weighing device 2, a grinding device 3, a blowing device 4 and a reaction flue 5. The stock bin 1 and the weighing device 2 are connected by a first material conveying pipe 11, and a stock bin valve 12 for controlling the conveying amount of the deacidification agent is arranged on the first material conveying pipe 11. The weighing device 2 and the grinding device 3 are connected by a second material conveying pipe 21. The grinding device 3 and the reaction flue 5 are connected by a powder feeding pipe 51. The blowing device 4 is connected with the powder feeding pipe 51 and is used for blowing the deacidification agent powder into the reaction flue 5. One side of the reaction flue 5 is connected with a flue gas inlet pipe 52 for the flue gas to enter, and the other side of the reaction flue 5 is connected with a flue gas outlet pipe 53 for the flue gas to output.

[0071] The embodiment of the present application discloses a flue gas acid gas removal method. Figure 2 The flue gas acid gas removal method comprises the following steps.

[0072] In step S101, the acid gas concentration of the flue gas in the reaction flue is acquired in real time, and the deacidification agent requirement is determined according to the acid gas concentration.

[0073] In the present application, sulfur dioxide is taken as the acid gas, and sodium bicarbonate is taken as the deacidification agent.

[0074] The reaction flue refers to a flue for neutralization reaction of the acid gas in the flue gas generated after waste incineration.

[0075] The reaction flue is provided with a plurality of gas analysis probes, the gas analysis probes are connected with a gas analyzer, and the sulfur dioxide concentration in the flue gas can be detected. After the sulfur dioxide concentration data acquired by the plurality of gas analysis probes is averaged, the sulfur dioxide concentration is obtained. In the embodiment, the sulfur dioxide concentration can be calculated every 5 seconds.

[0076] After the sulfur dioxide concentration is acquired, the sodium bicarbonate requirement is calculated according to the sulfur dioxide concentration and the neutralization reaction principle. When the sodium bicarbonate powder is sprayed into the high-temperature flue gas, the sodium bicarbonate will be decomposed into sodium carbonate and carbon dioxide. The sodium bicarbonate will react with the sulfur dioxide to form sodium sulfite. If there is oxygen in the flue gas, the sodium sulfite can be further oxidized into sodium sulfate. The sodium sulfite and the sodium sulfate are stable salts, so that the acid gas in the flue gas can be removed.

[0077] In step S102, the stock bin valve is controlled to be opened, so that the deacidification agent falls from the stock bin to the weighing device.

[0078] The bin stores deacidifying agent, i.e. sodium bicarbonate. Since the particle size of the sodium bicarbonate is not uniform, and there is a large particle size of sodium bicarbonate, the part of the sodium bicarbonate needs to be ground to obtain sodium bicarbonate powder for neutralization reaction with acid gas.

[0079] The deacidifying agent falls on the weighing device for weighing by opening control of the bin valve.

[0080] Step S103: Real-time detection of the cumulative weight of the deacidifying agent by the weighing device.

[0081] The cumulative weight refers to the weight of the deacidifying agent falling on the weighing device. The deacidifying agent is conveyed to the grinding device for grinding after falling on the weighing device, and since the grinding speed of the grinding device for the deacidifying agent is preset, the amount of deacidifying agent conveyed to the grinding device needs to be a preset value. Therefore, the cumulative weight of the deacidifying agent is detected in real time by the weighing device, and the bin valve is adjusted according to the cumulative weight to make the output amount of the deacidifying agent a preset value. Further, the grinding speed of the grinding device for the deacidifying agent is positively correlated with the concentration of acid gas in the reaction flue.

[0082] Step S104: Adjustment of the bin valve according to the cumulative weight to convey the deacidifying agent to the grinding device at a preset conveying amount.

[0083] The preset conveying amount is a preset constant, which can be adjusted according to actual needs.

[0084] The bin valve is adjusted according to the cumulative weight to make the cumulative weight always maintain within the range of a preset weighing weight, so that the deacidifying agent is conveyed to the grinding device at a preset conveying amount. The preset weighing weight is a preset constant, and the conveying amount of the deacidifying agent is positively correlated with the preset weighing weight.

[0085] For example, since the amount of deacidifying agent conveyed to the grinding device is preset, i.e. the deacidifying agent on the weighing device is reduced at a fixed speed. In the process of real-time detection of the cumulative weight of the deacidifying agent by the weighing device, if the cumulative weight is greater than the preset weighing weight, the opening degree of the bin valve is adjusted to slow down the falling speed of the deacidifying agent until the cumulative weight returns to the preset weighing weight. If the cumulative weight is less than the preset weighing weight, the opening degree of the bin valve is adjusted to speed up the falling speed of the deacidifying agent until the cumulative weight returns to the preset weighing weight.

[0086] Step S105: Grinding operation of the deacidifying agent by the grinding device to obtain deacidifying agent powder.

[0087] The grinding device can grind the sodium bicarbonate into sodium bicarbonate powder which can better react with the acid gas. The particle size of the sodium bicarbonate powder can be adjusted according to actual needs.

[0088] Step S106: According to the demand amount of the deacidifying agent, the deacidifying agent powder is blown into the reaction flue to react and neutralize the acid gas in the reaction flue, so that the concentration of the acid gas in the flue gas discharged from the reaction flue is less than the preset concentration.

[0089] Optionally, the powder inlet pipe is provided with a powder inlet valve on the side close to the grinding device, which can be used to control the amount of deacidifying agent powder output from the grinding device.

[0090] The preset concentration is a preset constant, which is used to judge whether the concentration of the acid gas in the discharged flue gas meets the emission standard, i.e., whether the concentration of sulfur dioxide meets the emission standard.

[0091] After the deacidifying agent is ground and deacidifying agent powder is formed, the air blowing device is started to blow air into the powder inlet pipe to blow the deacidifying agent powder into the reaction flue, and the deacidifying agent powder can react and neutralize the acid gas in the flue gas of the reaction flue.

[0092] By using the above technical solution, the concentration of the acid gas in the reaction flue is obtained and the demand amount of the deacidifying agent is determined, and the cumulative weight of the deacidifying agent is detected in real time by the weighing device, so that the deacidifying agent can be conveyed at a preset conveying amount and ground into deacidifying agent powder. According to the demand amount of the deacidifying agent, the deacidifying agent powder is introduced into the reaction flue, on the one hand, the use of deacidifying agent powder can increase the contact area with the acid gas and improve the reaction efficiency, on the other hand, it can improve the deacidification efficiency of the acid gas in the flue gas and reduce the waste of the deacidifying agent.

[0093] In the following embodiments, after the flue gas enters the reaction flue, when it contacts the deacidifying agent powder, due to the inability to form a directional airflow, the contact between the flue gas and the deacidifying agent powder is not sufficient, resulting in a lower neutralization reaction effect of the deacidifying agent powder and the acid gas. In order to improve this situation, the present application provides a cyclone reaction method, which is described with reference to Figure 3 The method comprises:

[0094] Step S201: Obtain the speed of the flue gas entering the reaction flue to obtain the flue gas entering speed.

[0095] The flow sensor is arranged in the flue gas inlet pipe to obtain the speed of the flue gas entering the reaction flue, thereby obtaining the flue gas entering speed. The speed of the flue gas entering the reaction flue can be obtained once every interval of the preset inlet time, and the preset inlet time is a preset constant which can be adjusted according to actual needs.

[0096] Step S202: control the deacidifier powder to be input into the reaction flue in a preset tangent direction, so that the flue gas in the reaction flue forms a rotational flow.

[0097] Optionally, the powder inlet pipe is provided with a universal nozzle in the reaction flue, and by adjusting the orientation of the universal nozzle, the direction of the deacidifier powder entering the reaction flue can be changed.

[0098] The preset tangent direction refers to the direction tangent to the circumferential wall of the reaction flue. By orienting the universal nozzle in the preset tangent direction, the deacidifier powder can be input in the preset tangent direction when entering the reaction flue. After the deacidifier powder is blown into the reaction flue, it can rotate along the inner wall of the reaction flue to drive the flue gas in the reaction flue to rotate, thereby forming a rotational flow, so as to increase the contact time of the flue gas and the deacidifier powder, so that the flue gas and the deacidifier powder are more fully contacted, thereby improving the effect of the neutralization reaction between the deacidifier powder and the acid gas.

[0099] Step S203: in the case where the flue gas entering speed is greater than the preset upper limit speed, adjust the deacidifier powder input direction to be deflected toward the flue gas inlet direction.

[0100] The preset upper limit speed is a preset constant, which can be adjusted according to actual needs.

[0101] The flue gas inlet direction refers to the direction of the flue gas entering the reaction flue from the flue gas inlet pipe, i.e. the direction of the position of the outlet of the flue gas inlet pipe in the reaction flue.

[0102] In the case where the flue gas entering speed is greater than the preset upper limit speed, it means that the speed of the flue gas entering the reaction flue is too high, so that the degree of the flue gas and the deacidifier powder forming a rotational flow together is low, and therefore the flue gas entering the reaction flue needs to be appropriately slowed down. By deflecting the orientation of the universal nozzle toward the flue gas inlet direction, the deacidifier powder has a speed vector toward the flue gas inlet direction when entering the reaction flue, so as to slow down the flue gas, and at the same time drive the flue gas to rotate to form a rotational flow, thereby increasing the contact time of the flue gas and the deacidifier powder.

[0103] Step S204: in the case where the flue gas entering speed is less than the preset lower limit speed, adjust the deacidifier powder input direction to be deflected toward the flue gas outlet direction.

[0104] The preset lower limit speed is a preset constant, which can be adjusted according to actual conditions.

[0105] The flue gas outlet direction refers to the direction of the flue gas entering the flue gas outlet pipe from the reaction flue, i.e. the direction of the position of the inlet of the flue gas outlet pipe in the reaction flue.

[0106] When the flue gas entering speed is less than the preset lower limit speed, it indicates that the speed of the flue gas entering the reaction flue is low, so that the time of synchronous rotation with the deacidification agent powder is too long, and the flue gas is prone to be retained in the reaction flue and cannot be output from the reaction flue, and therefore it is necessary to appropriately accelerate the flue gas in the reaction flue. By deflecting the orientation of the universal nozzle towards the flue gas outlet direction, the deacidification agent powder has a speed vector towards the flue gas outlet direction when entering the reaction flue, so as to accelerate the flue gas and at the same time drive the flue gas to rotate to form a rotational flow, and in the case of ensuring that the flue gas and the deacidification agent powder have sufficient contact time, the flue gas can be better discharged.

[0107] By adopting the above technical solution, the deacidification agent powder is input into the reaction flue in a preset tangent direction, so that the deacidification agent powder and the flue gas can rotate together to form a rotational flow, thereby increasing the contact time of the deacidification agent powder and the flue gas, making the deacidification agent powder and the flue gas contact more fully, and thereby improving the effect of the neutralization reaction of the deacidification agent powder and the acid gas.

[0108] In the following embodiments, since the concentration of acid gas in the flue gas is not the same, the amount of deacidification agent powder introduced into the flue gas during transportation to the reaction flue needs to be adjusted according to the concentration of acid gas to reduce the waste of deacidification agent, and the present application provides a deacidification agent powder introduction amount adjustment method, which is described with reference to Figure 4 The method comprises the following steps:

[0109] Step S301: The flue gas in the flue gas inlet pipe with a preset inlet length is intercepted to obtain a pre-detected flue gas.

[0110] The preset inlet length is a preset constant, which can be adjusted according to actual needs.

[0111] Optionally, a plurality of gas analysis probes are uniformly and interval arranged along the length direction on the side close to the reaction flue in the flue gas inlet pipe, so as to measure the concentration of acid gas in the flue gas in the flue gas inlet pipe.

[0112] The first gas analysis probe close to the side of the reaction flue is taken as the first gas analysis probe, and the gas analysis probe farthest from the side of the reaction flue is taken as the tail gas analysis probe. The flue gas in the flue gas inlet pipe between the first gas analysis probe and the tail gas analysis probe is taken as the pre-detection flue gas. Since the flue gas is continuously and continuously moving in the flue gas inlet pipe, the pre-detection flue gas is obtained in stages. Specifically, the flue gas between the first gas analysis probe and the tail gas analysis probe at the current time is taken as the first section of the pre-detection flue gas, the concentration of the acidic gas in the first section of the pre-detection flue gas is obtained at the same time point by using all the gas analysis probes, the obtained acidic gas concentration data is taken as the first group of concentration data, and the gas at the tail gas analysis probe is marked. When the gas moves to the first gas analysis probe, the flue gas between the first gas analysis probe and the tail gas analysis probe at this time is taken as the second section of the pre-detection flue gas, and the concentration of the acidic gas in the second section of the pre-detection flue gas is obtained at the same time point by using all the gas analysis probes. In this way, the flue gas in the flue gas inlet pipe can be divided into several pre-detection flue gases.

[0113] Step S302: detecting the concentration of the acidic gas in the pre-detection flue gas according to the preset interval distance to obtain a set of acidic gas concentrations.

[0114] The preset interval distance is a preset constant, which can be adjusted according to actual needs. In this embodiment, the preset interval distance is the distance between two adjacent gas analysis probes.

[0115] The concentration of the acidic gas in the pre-detection flue gas is obtained at the same time point by using all the gas analysis probes, and the acidic gas concentration data obtained by all the gas analysis probes is summarized into a data set to obtain a set of acidic gas concentrations. The acidic gas concentration obtained by the first gas analysis probe is taken as the first element in the set of acidic gas concentrations, and the acidic gas concentration obtained by the tail gas analysis probe is taken as the last element in the set of acidic gas concentrations.

[0116] Step S303: determining the amount of deacidification agent powder according to the set of acidic gas concentrations to obtain a set of deacidification agent powder amounts.

[0117] Each acidic gas concentration element in the set of acidic gas concentrations is matched with a corresponding deacidification agent powder amount, so that the deacidification agent powder corresponding to the deacidification agent powder amount can fully react with the acidic gas while reducing the situation of excessive or insufficient amount. The deacidification agent powder amount corresponding to the acidic gas concentration element can be obtained according to the principle of acid-base neutralization reaction. After obtaining all the deacidification agent powder amounts, they are summarized to form a set of deacidification agent powder amounts.

[0118] Step S304: obtaining the deacidifier powder feeding time according to the preset interval distance.

[0119] The deacidifier powder feeding time refers to the deacidifier powder feeding time corresponding to each deacidifier powder feeding amount element in the deacidifier powder feeding amount set.

[0120] In the above embodiment, the deacidifier powder feeding time is obtained according to the preset interval distance after obtaining the deacidifier feeding amount. The deacidifier powder feeding time is related to the speed of the flue gas entering the reaction flue. If the speed of the flue gas is v and the distance between the adjacent two gas analysis probes is S, then the deacidifier powder feeding time is S / v.

[0121] Step S305: feeding the deacidifier powder into the reaction flue according to the deacidifier powder feeding amount set and the deacidifier powder feeding time.

[0122] After obtaining the deacidifier powder feeding amount set and the deacidifier powder feeding time, the deacidifier powder can be fed according to the deacidifier feeding amount in the deacidifier powder feeding amount set and the corresponding deacidifier powder feeding time.

[0123] For example, there is an acid gas concentration set Q = [q1, q2, q3, q4, …], a deacidifier powder feeding amount set M = [m1, m2, m3, m4, …], and a deacidifier powder feeding time T = [t1, t2, t3, t4, …]. When the flue gas with an acid gas concentration of q1 enters the reaction flue, the deacidifier powder is fed into the reaction flue. When the feeding time reaches t1, the feeding amount of the deacidifier powder is m2. When the flue gas with an acid gas concentration of q2 enters the reaction flue, the deacidifier powder is fed into the reaction flue. When the feeding time reaches t2, the feeding amount of the deacidifier powder is m2. Similarly, the deacidifier powder feeding amount is adjusted according to the acid gas concentration in the flue gas.

[0124] By using the above technical solution, the acid gas concentration in the pre-detected flue gas is obtained in advance before the flue gas enters the reaction flue, the deacidifier powder feeding amount is determined according to the obtained acid gas concentration, and the deacidifier powder is fed into the reaction flue in combination with the deacidifier powder feeding time, so as to adjust the deacidifier feeding amount according to the acid gas concentration, so that the deacidifier powder can fully react with the acid gas in the flue gas while reducing the waste of the deacidifier powder.

[0125] In the following embodiments, the concentration distribution of the flue gas in the reaction flue may not be uniform after the flue gas enters the reaction flue. In order to better neutralize the acid gas, the present application provides a method for feeding deacidifier powder according to the concentration distribution, which is described with reference to Figure 5 The method comprises:

[0126] Step S401: Obtain the concentration distribution of the acid gas in the reaction flue.

[0127] Referring to Figure 1 The reaction flue 5 is connected with a powder inlet pipe 51 for the deacidification agent powder to enter and a plurality of powder inlet sub-pipes 511 connecting the powder inlet pipe 51 and the reaction flue 5, wherein the reaction flue 5 has a plurality of gas analysis probes, and the gas analysis probes are arranged one by one with the powder inlet sub-pipes 511.

[0128] The concentration of the acid gas at different positions in the reaction flue is obtained by simultaneously using all the gas analysis probes, so as to obtain the concentration distribution of the acid gas at different positions in the reaction flue.

[0129] Step S402: Determine the deacidification agent powder input amount of each powder inlet sub-pipe according to the concentration distribution, to obtain the powder inlet sub-pipe input amount.

[0130] The input amount of the deacidification agent powder can be obtained according to the chemical equation of the neutralization reaction of the deacidification agent and the acid gas. For example, according to the reaction formula of sulfur dioxide and sodium bicarbonate: That is, 1 mol of sulfur dioxide needs to consume 2 mol of sodium bicarbonate. Combined with the volume of the reaction flue and the concentration of the acid gas, the volume of the acid gas covered by the area corresponding to each gas analysis probe can be roughly calculated, so as to obtain the input amount of the deacidification agent powder required by each powder inlet sub-pipe, that is, the powder inlet sub-pipe input amount.

[0131] Step S403: Input the deacidification agent powder into the reaction flue according to the powder inlet sub-pipe input amount.

[0132] Optionally, each powder inlet sub-pipe is provided with a sub-valve, and the input amount of the deacidification agent valve is positively correlated with the opening degree of the sub-valve. Therefore, the input amount of the deacidification agent powder in the powder inlet sub-pipe can be adjusted by adjusting the opening degree of the sub-valve.

[0133] Further, the direction adjustment of the deacidification agent powder entering the reaction flue through the powder inlet sub-pipe can refer to the steps in the Figure 3 Embodiment.

[0134] By adopting the above technical scheme, the deacidification agent powder input amount corresponding to different positions can be determined based on the concentration distribution of the acid gas, so that the deacidification agent powder can react with the acid gas in the corresponding area after entering the reaction flue from the powder inlet sub-pipe, thereby improving the deacidification efficiency of the flue gas.

[0135] In the following embodiments, after the flue gas is output from the reaction flue, the concentration of the acidic gas in the flue gas still does not meet the preset concentration, and based on this situation, the flue gas still needs to be treated so that the concentration of the acidic gas in the flue gas meets the preset concentration. Therefore, the present application provides a reflux reaction method, which refers to Figure 6 The method comprises the following steps:

[0136] Step S501: Real-time acquisition of the concentration of the acidic gas in the flue gas outlet pipe, to obtain an outlet concentration.

[0137] Optionally, the reaction flue has a flue gas outlet pipe for the flue gas to enter, and the flue gas outlet pipe is provided with an outlet branch pipe in communication with the powder inlet pipe. The flue gas outlet pipe is provided with a gas analysis probe to acquire the concentration of the acidic gas in the flue gas output from the reaction pipe in real time, to obtain the outlet concentration.

[0138] Step S502: Judgment of whether the outlet concentration is less than the preset concentration.

[0139] The outlet concentration is compared with the preset concentration, and in the case that the outlet concentration is not less than the preset concentration, it indicates that the current flue gas is not suitable for emission and still needs to be treated, and therefore step S503 is performed.

[0140] Step S503: If not, the flue gas with the outlet concentration not less than the preset concentration is intercepted to obtain intercepted flue gas.

[0141] In another aspect, if the outlet concentration is less than the preset concentration, no treatment is performed.

[0142] Optionally, the flue gas outlet pipe is provided with an interception valve, and the outlet branch pipe is located between the interception valve and the reaction flue.

[0143] If not, it indicates that the outlet concentration is not less than the preset concentration, and based on this situation, the interception valve is closed so that the flue gas temporarily stays in the flue gas outlet pipe, thereby obtaining the intercepted flue gas.

[0144] Step S504: Control of the intercepted flue gas to pass to the outlet branch pipe, so that the intercepted flue gas is synchronously introduced into the reaction flue with the deacidification agent powder.

[0145] Optionally, the outlet branch pipe is provided with a branch valve.

[0146] After the interception valve is controlled to be closed, the branch valve is controlled to be opened, so that the intercepted flue gas is transported along the outlet branch pipe. Since the outlet branch pipe is in communication with the powder inlet pipe, the intercepted flue gas can return to the reaction flue along the powder inlet pipe. During the transportation of the intercepted flue gas in the powder inlet pipe, the acidic gas in the intercepted flue gas can be neutralized with the deacidification agent powder in the powder inlet pipe in advance, thereby reducing the concentration of the acidic gas in the intercepted flue gas.

[0147] Further, since the outlet gas concentration is obtained in real time, if the outlet gas concentration is less than the preset concentration for a preset waiting time length, the interception valve is controlled to open and the branch valve is controlled to close. The preset waiting time length is a preset constant, which can be adjusted according to actual conditions. The purpose of setting the preset waiting time length is to prevent flue gas with a high concentration of acid gas from remaining in the flue gas outlet pipe.

[0148] By adopting the technical scheme, in the case that the outlet gas concentration is not less than the preset concentration, the intercepted flue gas is guided to the powder inlet pipe and then introduced into the reaction pipe synchronously with the deacidification agent powder, so that the intercepted flue gas can fully contact with the deacidification agent powder during the conveying process in the powder inlet pipe, thereby greatly reducing the concentration of acid gas in the flue gas.

[0149] In the following embodiments, since the consumption of the deacidification agent powder increases during the execution of the above steps, the deacidification agent powder needs to be supplemented to avoid the insufficient introduction of the deacidification agent powder into the flue gas in the reaction flue. The present embodiment provides a deacidification agent powder supplementing method, which refers to Figure 7 The method comprises the following steps.

[0150] Step S601: In the process of controlling the intercepted flue gas to pass through the outlet gas branch pipe, the pre-consumption amount of the deacidification agent powder is obtained according to the outlet gas concentration.

[0151] The pre-consumption amount refers to the amount of deacidification agent powder consumed by the intercepted flue gas when entering the powder inlet pipe.

[0152] The pre-consumption amount can be obtained according to the chemical equation of the neutralization reaction between the deacidification agent and the acid gas. Taking sulfur dioxide as the acid gas and sodium bicarbonate as the deacidification agent as an example, according to the reaction formula: That is, 1 mol of sulfur dioxide needs to consume 2 mol of sodium bicarbonate.

[0153] While obtaining the outlet gas concentration, the volume of the flue gas can be calculated according to the pipe diameter of the flue gas outlet pipe and the time of the flue gas flowing through the flue gas outlet pipe, and the amount of acid gas can be calculated according to the outlet gas concentration. After obtaining the amount of acid gas, the amount of deacidification agent powder is obtained according to the reaction formula, so as to obtain the pre-consumption amount of the deacidification agent powder.

[0154] Step S602: The increase amount of the deacidification agent powder is determined according to the pre-consumption amount.

[0155] The increase amount of the deacidification agent powder is the same as the pre-consumption amount.

[0156] Step S603: The time for intercepting the flue gas with the outlet gas concentration not less than the preset concentration is obtained, and the interception time is obtained.

[0157] The trapping time refers to the time experienced from the time point at which the outlet gas concentration is not less than the preset concentration to the time point at which the outlet gas concentration is reduced to less than the preset concentration. That is, the time experienced from the closing of the trapping valve to the reopening of the trapping valve.

[0158] Step S604: According to the trapping time and the increase amount, the deacidification agent powder is added into the powder inlet pipe.

[0159] The trapping time can reflect the time experienced by the trapped flue gas along the outlet gas branch pipe to the powder outlet pipe.

[0160] In the process of adding the deacidification agent powder into the reaction flue, the output amount of the deacidification agent valve is increased by adjusting the valve on the powder outlet pipe, wherein the output amount of the deacidification agent powder is positively correlated with the opening and closing degree of the valve on the powder outlet pipe, and the output amount of the deacidification agent powder per unit time can be obtained according to the opening and closing degree of the valve on the powder outlet pipe. The increase amount per unit time is calculated according to the increase amount and the trapping time, and the opening degree of the valve on the powder outlet pipe is adjusted, so that the increase amount of the deacidification agent powder per unit time is increased while the original output amount of the deacidification agent powder is maintained. When the opening degree of the valve on the powder outlet pipe is adjusted to the trapping time, the opening degree of the valve on the powder outlet pipe is restored to the original value, that is, the addition of the deacidification agent powder is stopped.

[0161] By adopting the above technical solution, in the process of controlling the trapped flue gas to flow into the outlet gas branch pipe, the pre-consumption amount of the deacidification agent powder can be obtained in real time based on the outlet gas concentration, so as to obtain the increase amount of the deacidification agent powder, and the deacidification agent powder is added in combination with the trapping time, which can reduce the problem that the deacidification agent powder is reduced due to the reaction between the trapped flue gas and the deacidification agent powder in the powder inlet pipe, and ensure that sufficient deacidification agent powder is added into the reaction pipe to participate in the neutralization reaction, thereby improving the stability of removing acid gas.

[0162] In the following embodiments, there may be large-particle deacidification agents or caked deacidification agents in the process of falling to the weighing device. The large-particle deacidification agents are difficult to be ground by the grinding device, and the caked deacidification agents are easy to cause the first conveying pipe to be blocked. In order to improve this problem, the present application provides a deacidification agent removing method, which refers to Figure 8 The method comprises:

[0163] Step S701: Obtain a real-time weight change curve according to the cumulative weight.

[0164] The real-time weight change curve is used to reflect the change of the cumulative weight. At the same time of obtaining the cumulative weight in real time, a time stamp is recorded, and a smooth curve is drawn with the time stamp as the abscissa and the real-time cumulative weight as the ordinate, to obtain the real-time weight change curve.

[0165] Step S702: judging whether there is an abnormal increasing segment according to the real-time weight change curve.

[0166] The abnormal increasing segment refers to a curve segment with a significantly increased slope relative to an initial change state in the real-time weight change curve. The initial change state refers to a state in which the silo valve is supplied at a stable opening degree and the deacidifying agent falls at a uniform speed, and the curve presents an approximately horizontal change trend.

[0167] Step S703: if there is, determining the removal height according to the abnormal increasing segment.

[0168] In another aspect, if there is not, no processing is performed.

[0169] The removal height refers to a height at which the upper layer of the deacidifying agent on the weighing device is removed.

[0170] If there is, it indicates that there is a large-particle deacidifying agent or a caked deacidifying agent in the process of falling of the deacidifying agent to the weighing device, so that the real-time change curve has an abnormal increasing segment. According to the abnormal increasing segment, the weight of the large-particle deacidifying agent or the caked deacidifying agent can be obtained, the weight of the abnormal object is obtained, and the ratio of the overall height of the deacidifying agent occupied by the abnormal object can be calculated according to the weight of the abnormal object, so as to obtain the removal height. The upper layer of the deacidifying agent can be removed according to the removal height, so as to remove the large-particle deacidifying agent or the caked deacidifying agent.

[0171] Step S704: performing a removal operation on the deacidifying agent on the weighing device according to the removal height.

[0172] Optionally, a horizontal push plate is arranged above the weighing device.

[0173] After the removal height is obtained, the upper layer of the deacidifying agent is removed by the horizontal push plate to the corresponding height of the deacidifying agent at the removal height, so as to remove the large-particle deacidifying agent or the caked deacidifying agent.

[0174] Step S705: adjusting the opening degree of the silo valve according to the real-time weight change curve, so that the real-time weight change curve returns to the initial change state.

[0175] The initial change state refers to a state in which the silo valve is supplied at a stable opening degree and the deacidifying agent falls at a uniform speed, and the curve presents an approximately horizontal change trend, i.e., a state corresponding to the real-time weight change curve before the abnormal increasing segment appears.

[0176] Wherein, after the big particle deacidifier or the caked deacidifier is removed, the cumulative weight of the deacidifier will be less than the preset weighing weight, so the opening degree of the silo valve needs to be increased to restore the cumulative weight of the deacidifier to the preset weighing weight, and then the opening degree of the silo valve is reduced to restore the real-time weight change curve to the initial change state. Wherein, the step of adjusting the opening degree of the silo valve according to the real-time weight change curve can also refer to step S104.

[0177] By adopting the above technical solution, in the case of an abnormal increase in the real-time weight change curve, it indicates that there may be a big particle deacidifier or a caked deacidifier, so the removal height is obtained according to the abnormal increase, and the deacidifier is removed according to the removal height, so as to remove the big particle deacidifier or the caked deacidifier, which helps to reduce the probability that the grinding device cannot grind the big particle deacidifier or the first conveying pipe is blocked, so that the conveying and grinding operations of the deacidifier are more smooth.

[0178] Based on the same inventive concept, the embodiment of the present application provides a flue gas acid gas removal system, comprising:

[0179] The acquisition module is configured to acquire the acid gas concentration and the cumulative weight.

[0180] The memory is configured to store the program of the flue gas acid gas removal method.

[0181] The processor, the program in the memory can be loaded and executed by the processor and realize the flue gas acid gas removal method.

[0182] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is exemplified, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0183] The embodiment of the present application provides a computer readable storage medium, which stores a computer program capable of being loaded and executed by a processor to execute a flue gas acid gas removal method.

[0184] The computer storage medium includes, for example, a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0185] Based on the same inventive concept, the embodiment of the present application provides a kind of intelligent terminal, including memory and processor, computer program capable of being loaded and executed by processor on memory and carrying out flue gas acid gas removal method.

[0186] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of functional modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0187] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, any feature disclosed in the specification (including abstract and drawings) can be replaced by other equivalent or similar purpose alternative features, unless specifically described. That is, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for removing acidic gases from flue gas, characterized in that, include: The concentration of acidic gas in the flue gas in the reaction flue is acquired in real time, and the amount of deacidifying agent required is determined based on the concentration of acidic gas. Control the opening of the silo valve to allow the deacidifying agent to fall from the silo to the weighing device; The cumulative weight of the deacidifying agent is detected in real time using a weighing device; Adjust the hopper valve according to the cumulative weight to deliver the deacidifying agent to the grinding device at a preset delivery rate; The deacidifying agent is ground using a grinding device to obtain deacidifying agent powder; According to the required amount of deacidifying agent, the deacidifying agent powder is blown into the reaction flue to react and neutralize the acidic gas in the reaction flue, so that the concentration of acidic gas in the flue gas discharged from the reaction flue is less than the preset concentration. The method further includes: The velocity of the flue gas entering the reaction flue is obtained; The deacidifying agent powder is controlled to be fed into the reaction flue in a preset tangential direction, so that the flue gas in the reaction flue forms a swirling flow. After being blown into the reaction flue, the deacidifying agent powder rotates along the inner wall of the reaction flue, thereby driving the flue gas in the reaction flue to rotate. When the flue gas inlet velocity exceeds the preset upper limit velocity, the deacidifying agent powder input direction is adjusted to deflect towards the flue gas inlet direction, so that the deacidifying agent powder has a velocity vector towards the flue gas inlet direction when entering the reaction flue, which is used to decelerate the flue gas and drive the flue gas to rotate to form a vortex. When the flue gas inlet velocity is less than the preset lower limit velocity, the input direction of the deacidifying agent powder is adjusted to deflect towards the flue gas outlet direction, so that the deacidifying agent powder has a velocity vector towards the flue gas outlet direction when it enters the reaction flue, which is used to accelerate the flue gas and drive the flue gas to rotate to form a vortex. The reaction flue has a flue gas inlet pipe for the entry of flue gas, and the method further includes: The flue gas in the flue gas inlet pipe is cut off at a preset inlet length to obtain the pre-detection flue gas; The acid gas concentration is detected in the pre-detection flue gas according to a preset interval distance to obtain an acid gas concentration set; The amount of deacidifying agent powder introduced is determined based on the acid gas concentration set, thus obtaining the deacidifying agent powder introduction amount set; The deacidifying agent powder introduction time is determined according to a preset interval distance; Deacidifying agent powder is introduced into the reaction flue according to the amount and timing of the deacidifying agent powder introduction.

2. The method for removing acidic gases from flue gas according to claim 1, characterized in that, The reaction flue is also connected to a powder inlet pipe for introducing deacidifying agent powder and several powder inlet sub-pipes connecting the powder inlet pipe and the reaction flue. The method further includes: Obtain the concentration distribution of acidic gases in the reaction flue; The amount of deacidifying agent powder introduced into each powder inlet tube is determined based on the concentration distribution, thus obtaining the powder inlet tube introduction amount; Deacidifying agent powder is introduced into the reaction flue according to the amount introduced through the powder inlet pipe.

3. The method for removing acidic gases from flue gas according to claim 2, characterized in that, The reaction flue has a flue gas outlet pipe for the inlet of flue gas, and the flue gas outlet pipe is provided with an outlet branch pipe connected to the powder inlet pipe. The method further includes: The concentration of acidic gas in the flue gas outlet pipe is obtained in real time to obtain the outlet gas concentration; Determine if the gas concentration is lower than the preset concentration; If not, the flue gas with an exhaust concentration not less than the preset concentration is intercepted to obtain intercepted flue gas; Control the flow of the intercepted flue gas to the outlet branch pipe so that the intercepted flue gas and the deacidifying agent powder are simultaneously introduced into the reaction flue.

4. The method for removing acidic gases from flue gas according to claim 3, characterized in that, The method further includes: The amount of deacidifying agent powder to be added is determined based on the pre-consumption amount; The retention time is obtained by capturing flue gas with an exhaust concentration not less than a preset concentration. The deacidifying agent powder is introduced into the powder inlet pipe according to the retention time and the increase in amount.

5. The method for removing acidic gases from flue gas according to claim 1, characterized in that, The method further includes: Obtain a real-time weight change curve based on cumulative weight; Determine if there are any abnormal increases based on the real-time weight change curve; If it exists, determine the removal height based on the abnormally increased segment; The deacidifying agent located on the weighing device is removed according to the removal height; Adjust the opening and closing degree of the silo valve according to the real-time weight change curve to restore the real-time weight change curve to its initial state.

6. A flue gas acid gas removal system, characterized in that, The system is used to perform the flue gas acid gas removal method as described in any one of claims 1 to 5, comprising: The acquisition module is used to acquire the concentration and cumulative weight of acidic gas. A memory for storing the program of the flue gas acid gas removal method; The processor and the program in the memory can be loaded and executed by the processor to implement the flue gas acid gas removal method.

7. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed as described in any one of claims 1 to 5.

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