Primary air control method for mixed combustion of stale garbage and household garbage and related device thereof

Abstract

The invention discloses a primary air control method for blending combustion of stale garbage and household garbage and a related device thereof.The method comprises the steps that the blending combustion proportion of blending combustion of the stale garbage and the household garbage at the current moment is obtained, the blending combustion proportion is the proportion of the stale garbage when the stale garbage and the household garbage are subjected to blending combustion, and the blending combustion ratio is the proportion of the stale garbage when the stale garbage and the household garbage are subjected to blending combustion; and when the blending combustion proportion is higher than the blending combustion proportion at the last moment, the primary fan is driven to increase the rotating speed of the fan so as to increase the air volume and the air pressure of the primary air for blending combustion of the stale garbage and the household garbage, and the air preheater is driven to enhance the flow of steam in the air preheater so as to increase the air temperature of the primary air, otherwise, the air temperature of the primary air is reduced. Therefore, after the blending combustion proportion of the stale garbage and the household garbage is increased, the air volume, the air pressure and the air temperature of the primary air are correspondingly increased, so that the stale garbage can be sufficiently incinerated, the treatment efficiency of the stale garbage is improved, and the smooth blending combustion work of the stale garbage and the household garbage is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of waste incineration, and more specifically, to a primary air control method and related device for co-incinerating stale waste and domestic waste. Background Art

[0002] With the acceleration of the pace of life, the amount of domestic waste generated by people has also increased. To meet the needs of urban beautification and environmental protection, it is necessary to landfill people's domestic waste into landfills. Over time, the capacity of landfills has gradually become insufficient to accommodate the continuously added domestic waste, and the waste landfilled in landfills for a certain number of years has mostly become stale waste. At present, it is urgent to treat the stale waste in landfills.

[0003] Due to the huge quantity of stale waste stored in landfills, it is necessary to efficiently treat the stale waste. However, nowadays, when using the method of co-incinerating stale waste and domestic waste, when the co-incineration ratio changes, due to the change of waste components and the change of incineration products, the continuous progress of waste incineration is hindered.

[0004] How to control the primary air during the co-incineration of stale waste and domestic waste to ensure the smooth progress of the co-incineration work of stale waste and domestic waste is an issue that needs attention. Summary of the Invention

[0005] In view of the above problems, the present application provides a primary air control method and related device for co-incinerating stale waste and domestic waste, so as to ensure the smooth progress of the co-incineration work of stale waste and domestic waste through the control of primary air related parameters.

[0006] To achieve the above object, the following specific solutions are proposed:

[0007] A primary air control method for co-incinerating stale waste and domestic waste, which is applied to a primary air control system. The primary air control system includes a primary air fan and an air preheater;

[0008] The method includes:

[0009] Obtain the co-incineration ratio of stale waste and domestic waste at the current moment. The co-incineration ratio is the proportion of stale waste in the co-incineration of stale waste and domestic waste;

[0010] When the co-incineration ratio is higher than that of the previous moment, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale waste and domestic waste, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air;

[0011] When the co-incineration ratio decreases compared to the co-incineration ratio at the previous moment, drive the primary air fan to reduce the fan speed, so as to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the flow rate of the steam inside it, so as to reduce the air temperature of the primary air.

[0012] Optionally, the primary air fan is equipped with a fan outlet regulating valve;

[0013] When the co-incineration ratio increases compared to the co-incineration ratio at the previous moment, drive the primary air fan to increase the fan speed, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste, and drive the air preheater to enhance the flow rate of the steam inside it, so as to increase the air temperature of the primary air, including:

[0014] When the co-incineration ratio increases compared to the co-incineration ratio at the previous moment, determine the co-incineration increase ratio of the co-incineration ratio relative to the co-incineration ratio at the previous moment;

[0015] According to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating the stale waste and the domestic waste, calculate the increment of the primary air volume and the increment of the primary air pressure;

[0016] According to the co-incineration increase ratio, calculate the increment of the primary air temperature;

[0017] Based on the increment of the primary air volume, drive the primary air fan to increase the fan speed, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste;

[0018] Based on the increment of the primary air pressure and the current speed of the primary air fan, adjust the fan outlet regulating valve;

[0019] Based on the increment of the primary air temperature, drive the air preheater to enhance the flow rate of the steam inside it, so as to increase the air temperature of the primary air.

[0020] Optionally, according to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating the stale waste and the domestic waste, calculating the increment of the primary air volume and the increment of the primary air pressure includes:

[0021] According to the co-incineration increase ratio, use the first formula to calculate the increment of the primary air volume, and the first formula is:

[0022]

[0023] Wherein, is the co-incineration increase ratio, is the increment of the primary air volume, is the upper limit of the primary air volume provided by the primary air fan for the incinerator with scale i during co-incineration, is the lower limit of the primary air volume provided by the primary air fan for the incinerator with scale i during co-incineration;

[0024] Calculate the primary air pressure increment using the second formula according to the co-incineration increase ratio, and the second formula is:

[0025]

[0026] where is the upper limit of the primary air pressure required by the incinerator with scale i during co-incineration, is the lower limit of the primary air pressure required by the incinerator with scale i during co-incineration.

[0027] Optionally, calculate the primary air temperature increment according to the co-incineration increase ratio, including:

[0028] Predict the combined moisture content of the stale waste and the domestic waste according to the co-incineration increase ratio;

[0029] Calculate the primary air temperature increment using the third formula, and the third formula is:

[0030]

[0031] where is the co-incineration increase ratio, is the primary air temperature increment, is the upper limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-incineration, is the lower limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-incineration, is the moisture content, is the high value of the preset moisture content, is the low value of the preset moisture content.

[0032] Optionally, the method further includes:

[0033] Monitor the furnace temperature where the stale waste and the domestic waste are co-incinerated;

[0034] If the furnace temperature is lower than the lower incineration limit value, drive the air preheater to increase the flow rate of its internal steam to increase the temperature of the primary air.

[0035] A primary air control device for co-incineration of stale waste and domestic waste, which is applied to a primary air control system. The primary air control system includes a primary air fan and an air preheater;

[0036] The device includes:

[0037] The blending ratio acquisition unit is used to acquire the blending ratio of the stale waste and the domestic waste for co-incineration at the current moment, and the blending ratio is the proportion of the stale waste in the co-incineration of the stale waste and the domestic waste;

[0038] The primary air parameter driving increase unit is used to drive the primary air fan to increase the fan speed when the blending ratio is higher than that at the previous moment, so as to increase the air volume and air pressure of the primary air for the co-incineration of the stale waste and the domestic waste, and drive the air preheater to enhance the steam flow rate inside it to increase the air temperature of the primary air;

[0039] The primary air parameter driving decrease unit is used to drive the primary air fan to reduce the fan speed when the blending ratio is lower than that at the previous moment, so as to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the steam flow rate inside it to lower the air temperature of the primary air.

[0040] Optionally, the primary air fan is equipped with a fan outlet regulating valve;

[0041] The primary air parameter driving increase unit includes:

[0042] The blending ratio increase proportion determination unit is used to determine the blending ratio increase proportion of the blending ratio relative to the blending ratio at the previous moment when the blending ratio is higher than that at the previous moment;

[0043] The air volume and air pressure increment calculation unit is used to calculate the primary air volume increment and the primary air pressure increment according to the blending ratio increase proportion and the scale of the incinerator used for the co-incineration of the stale waste and the domestic waste;

[0044] The primary air temperature increment calculation unit is used to calculate the primary air temperature increment according to the blending ratio increase proportion;

[0045] The fan speed regulation unit is used to drive the primary air fan to increase the fan speed based on the primary air volume increment so as to increase the air volume and air pressure of the primary air for the co-incineration of the stale waste and the domestic waste;

[0046] The fan regulating valve regulation unit is used to regulate the fan outlet regulating valve based on the primary air pressure increment and the current speed of the primary air fan;

[0047] The steam flow rate enhancement unit is used to drive the air preheater to enhance the steam flow rate inside it based on the primary air temperature increment to increase the air temperature of the primary air.

[0048] Optionally, the air volume and air pressure increment calculation unit includes:

[0049] The primary air flow rate increment calculation unit is used to calculate the primary air flow rate increment according to the co-incineration increase ratio by using the first formula, and the first formula is:

[0050]

[0051] Wherein, is the co-incineration increase ratio, is the primary air flow rate increment, is the upper limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-incineration, is the lower limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-incineration;

[0052] The primary air pressure increment calculation unit is used to calculate the primary air pressure increment according to the co-incineration increase ratio by using the second formula, and the second formula is:

[0053]

[0054] Wherein, is the upper limit of the primary air pressure required by the incinerator with scale i during co-incineration, is the lower limit of the primary air pressure required by the incinerator with scale i during co-incineration.

[0055] Optionally, the primary air temperature calculation unit includes:

[0056] The moisture content prediction unit is used to predict the common moisture content of the stale waste and the domestic waste according to the co-incineration increase ratio;

[0057] The third formula calculation unit is used to calculate the primary air temperature increment by using the third formula, and the third formula is:

[0058]

[0059] Wherein, is the co-incineration increase ratio, is the primary air temperature increment, is the upper limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-incineration, is the lower limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-incineration, is the moisture content, is the preset high value of the moisture content, is the preset low value of the moisture content.

[0060] Optionally, the device further includes:

[0061] A furnace temperature monitoring unit for monitoring the temperature of the furnace where the stale waste and the domestic waste are co-incinerated;

[0062] A primary air temperature increasing unit for driving the air preheater to enhance the flow rate of the steam inside it to increase the temperature of the primary air if the furnace temperature is lower than the lower limit value of incineration.

[0063] A primary air control device for co-incinerating stale waste and domestic waste, comprising a memory and a processor;

[0064] The memory is used for storing programs;

[0065] The processor is used for executing the program to implement each step of the primary air control method for co-incinerating stale waste and domestic waste as described above.

[0066] A storage medium, on which a computer program is stored. When the computer program is executed by a processor, each step of the primary air control method for co-incinerating stale waste and domestic waste as described above is implemented.

[0067] By means of the above technical solution, the present application obtains the co-incineration ratio of stale waste and domestic waste at the current moment, where the co-incineration ratio is the ratio of the stale waste in the co-incineration of stale waste and domestic waste. When the co-incineration ratio is higher than the co-incineration ratio at the previous moment, the primary air fan is driven to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale waste and domestic waste, and the air preheater is driven to enhance the flow rate of the steam inside it to increase the temperature of the primary air. Thus, it can be seen that after the co-incineration ratio of stale waste and domestic waste increases, the air volume, air pressure and temperature of the primary air are correspondingly increased, so that the stale waste can be fully incinerated, the treatment efficiency of the stale waste is improved, and the co-incineration work of stale waste and domestic waste is ensured to proceed smoothly. Description of the Drawings

[0068] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0069] Figure 1 It is a schematic flow chart for implementing the primary air control for co-incinerating stale waste and domestic waste provided by an embodiment of the present application;

[0070] Figure 2 It is a schematic structural diagram of a device for implementing the primary air control for co-incinerating stale waste and domestic waste provided by an embodiment of the present application;

[0071] Figure 3 This is a schematic structural diagram of a device for controlling the primary air in the co-incineration of aged waste and domestic waste provided by an embodiment of the present application. Specific implementation manners

[0072] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a 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 creative efforts shall fall within the protection scope of the present application.

[0073] The solution of the present application can be implemented based on a terminal with data processing capabilities. The terminal can be a primary air control system, which can include a primary air fan and an air preheater, and can adjust the fan speed of the primary air fan and the flow rate of the steam inside the air preheater.

[0074] Among them, the primary air fan can be a variable-frequency fan, and the primary air volume and pressure are adjusted by changing the fan speed. When the waste incineration condition changes and the primary air volume needs to be changed, the fan speed can be changed by adjusting the frequency of the frequency converter, and then the air volume output is changed. When the speed increases, the air pressure and volume output by the fan will also increase correspondingly. When the speed decreases, the air pressure and volume will decrease correspondingly.

[0075] The air preheater can heat the primary air with the heat of steam and is the main device for increasing the temperature of the primary air. The steam exchanges heat with the primary air in the preheater, transfers the heat to the primary air, and increases the temperature of the primary air. By adjusting the flow rate and temperature of the steam, the heating degree of the primary air can be controlled, so as to achieve the purpose of adjusting the temperature of the primary air. For example, when the calorific value of the waste is low and the moisture content is high, it is necessary to increase the temperature of the primary air to strengthen the drying and combustion of the waste. At this time, the flow rate of the steam can be increased or the temperature of the steam can be increased to increase the temperature of the primary air.

[0076] Next, in combination with Figure 1 As described above, the primary air control method for co-incinerating aged waste and domestic waste in the present application may include the following steps:

[0077] Step S110: Obtain the co-incineration ratio of aged waste and domestic waste at the current moment.

[0078] Among them, the co-incineration ratio can represent the proportion of the aged waste in the co-incineration of the aged waste and the domestic waste.

[0079] Specifically, the primary air control system can monitor in real time the blending ratio of stale waste and domestic waste during co-incineration, or it can be connected to a monitoring system that records the blending ratio data in real time, so as to obtain the blending ratio data of the monitoring system in real time.

[0080] Step S120: When the blending ratio is higher than that at the previous moment, drive the primary air blower to increase the blower speed, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste, and drive the air preheater to enhance the steam flow rate inside it, so as to increase the air temperature of the primary air.

[0081] It can be understood that after the blending ratio increases, the proportion of stale waste in the incinerated garbage heap increases, resulting in a lower calorific value of the waste entering the furnace. Based on this, the incineration amount can be increased to ensure the boiler heat load and furnace temperature, and increasing the incineration amount will not have an obvious negative impact on the stability of the boiler heat load and the problem of excessive pollutant emissions caused by the furnace temperature.

[0082] Specifically, when the blending ratio increases, the increased stale waste can be fully burned by increasing the air volume, air pressure and air temperature of the primary air.

[0083] Step S130: When the blending ratio is lower than that at the previous moment, drive the primary air blower to decrease the blower speed, so as to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the steam flow rate inside it, so as to lower the air temperature of the primary air.

[0084] It can be understood that the speed of the primary air blower has upper and lower limits, and similarly, the air temperature of the primary air provided by the air preheater should not be too high. Therefore, to leave room for adjusting the relevant parameters of the primary air for the next increase in the blending ratio, the relevant parameters of the primary air can be appropriately reduced when the blending ratio decreases.

[0085] The primary air control method for co-incinerating stale waste and domestic waste provided in this embodiment obtains the blending ratio of stale waste and domestic waste during co-incineration at the current moment, where the blending ratio is the proportion of stale waste in the co-incineration of stale waste and domestic waste. When the blending ratio is higher than that at the previous moment, drive the primary air blower to increase the blower speed, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste, and drive the air preheater to enhance the steam flow rate inside it, so as to increase the air temperature of the primary air. Thus, it can be seen that after the blending ratio of stale waste and domestic waste increases, the air volume, air pressure and air temperature of the primary air are correspondingly increased, enabling the stale waste to be fully incinerated, improving the treatment efficiency of the stale waste, and ensuring the smooth progress of the co-incineration of stale waste and domestic waste.

[0086] In some embodiments of the present application, the primary air blower mentioned in the foregoing embodiments is further introduced. The primary air blower may be equipped with a regulating valve at the blower outlet.

[0087] Specifically, the regulating valve at the blower outlet may be located at the outlet pipe of the primary air blower. By adjusting the opening degree of the valve, the outlet pressure of the primary air can be controlled, thereby indirectly adjusting the primary air pressure. When it is necessary to increase the primary air pressure, the outlet regulating valve is appropriately closed to increase the wind resistance and raise the air pressure. Conversely, when reducing the air pressure, the opposite operation is taken.

[0088] Based on this, the process of the above step S120, when the co-incineration ratio is increased compared to the previous moment, driving the primary air blower to increase the blower speed to increase the air volume and air pressure of the primary air for co-incinerating the stale garbage and the domestic waste, and driving the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air, is further introduced. This process may include:

[0089] S1. When the co-incineration ratio is increased compared to the previous moment, determine the co-incineration increase ratio of the co-incineration ratio relative to the previous moment.

[0090] Specifically, the co-incineration ratio is usually between 50% and 80%. If the co-incineration ratio at the previous moment is 50% and the current co-incineration ratio is 70%, the co-incineration increase ratio can be determined to be 20%.

[0091] S2. According to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating the stale garbage and the domestic waste, calculate the increment of the primary air volume and the increment of the primary air pressure.

[0092] Among them, the primary air volume and the primary air pressure provided to the furnace are related to the scale of the incinerator. The scale of the incinerator can include small, medium, and large. The larger the scale of the incinerator, the greater the demand for the primary air volume and air pressure.

[0093] Specifically, the calculation process of the increment of the primary air volume in step S2 may include:

[0094] Calculate the increment of the primary air volume according to the co-incineration increase ratio using the first formula.

[0095] Among them, the first formula may be:

[0096]

[0097] Among them, is the co-incineration increase ratio, is the increment of the primary air volume, is the upper limit of the primary air volume provided by the primary air blower for an incinerator with a scale of i during co-incineration, is the lower limit of the primary air volume provided by the primary air fan for the incinerator of scale i during co-incineration.

[0098] It can be understood that is the maximum amplitude of the primary air volume increment adjustment. When the co-incineration ratio increases from the lowest value of 50% under normal conditions to the highest value of 80% under normal conditions, the co-incineration increase ratio is 30% at the highest value, and it is necessary to adjust from the lower limit of the primary air volume to the upper limit of the primary air volume . It can be seen from the first formula that when x = 30%, the value of is 1, making When the co-incineration increase ratio is x = 0, no adjustment is required. When the co-incineration increase ratio reaches the intermediate value, that is, x = 15%, the increment of the primary air volume required to be provided by the primary air fan is which is 1 / 3 of the maximum amplitude. However, the increment of the primary air volume and the co-incineration increase ratio are not in a linear relationship. When the co-incineration increase ratio is at a relatively small level, such as 0 - 15%, the garbage incineration stack does not require a too sensitive increment of the primary air volume for the time being. The growth rate of the product of the quadratic term and the exponential term in the first formula is slow. When the co-incineration increase ratio is at a relatively large level, such as 15% - 30%, the sensitivity of the garbage incineration stack to the increment of the primary air volume demand increases. Therefore, the growth rate of the product of the quadratic term and the exponential term in the first formula accelerates.

[0099] The calculation process of the primary air pressure increment in this step S2 may include:

[0100] Calculate the primary air pressure increment according to the co-incineration increase ratio by using the second formula.

[0101] Among them, the second formula may be:

[0102]

[0103] Among them, is the upper limit of the primary air pressure required for the incinerator of scale i during co-incineration, is the lower limit of the primary air pressure required for the incinerator of scale i during co-incineration.

[0104] It can be understood that compared with the primary air volume, when the co-incineration ratio increases, the sensitivity of the garbage incineration stack to the demand for the primary air pressure is more obvious. Therefore, when the co-incineration increase ratio is at a relatively large level (15% - 30%), the sensitivity of the garbage incineration stack to the increment of the primary air volume demand increases.

[0105] S3. Calculate the primary air temperature increment according to the co-incineration increase ratio.

[0106] Specifically, the calculation process of the primary air temperature increment in step S3 may include:

[0107] S31. Predict the moisture content of the mixture of the stale waste and the domestic waste according to the co - combustion increase ratio.

[0108] It can be understood that the stale waste contains more moisture than the domestic waste. When the co - combustion ratio increases, the moisture content of the mixture of the stale waste and the domestic waste increases. The increase in moisture content will hinder the incineration of the waste. Therefore, the relationship between the moisture content and the primary air temperature is positively correlated.

[0109] S32. Calculate the primary air temperature increment using the third formula.

[0110] Among them, the third formula is:

[0111]

[0112] Among them, is the co - combustion increase ratio, is the primary air temperature increment, is the upper limit of the primary air temperature provided by the air pre - heater for the incinerator with scale i during co - combustion, is the lower limit of the primary air temperature provided by the air pre - heater for the incinerator with scale i during co - combustion, is the moisture content, is the preset high value of the moisture content, is the preset low value of the moisture content.

[0113] S4. Based on the primary air volume increment, drive the primary air fan to increase the fan speed, so as to increase the air volume and air pressure of the primary air for co - combustion of the stale waste and the domestic waste.

[0114] In addition, if the fan speed is increased based on the primary air volume increment and the speed of the primary air fan reaches the upper limit, drive the primary air fan to increase the speed to its upper limit.

[0115] S5. Based on the primary air pressure increment and the current speed of the primary air fan, adjust the fan outlet regulating valve.

[0116] It can be understood that when the primary air fan adjusts the speed, it changes both the air volume and the air pressure at the same time. Therefore, after fixing the speed of the primary air fan, the fan outlet regulating valve can be adjusted according to the current speed and the requirement of the air pressure increment.

[0117] S6. Based on the primary air temperature increment, drive the air pre - heater to enhance the flow rate of the internal steam to increase the air temperature of the primary air.

[0118] In addition, the primary air temperature can be adjusted by monitoring the furnace temperature where the stale waste and the domestic waste are co-incinerated.

[0119] Specifically, if the furnace temperature is lower than the lower limit value of incineration, the air preheater is driven to increase the flow rate of the steam inside it to increase the temperature of the primary air.

[0120] Among them, the lower limit value of incineration can represent the lowest temperature at which the furnace normally incinerates waste.

[0121] Next, the device for controlling the primary air for co-incinerating stale waste and domestic waste provided in the embodiments of the present application will be described. The device for controlling the primary air for co-incinerating stale waste and domestic waste described below can be correspondingly referred to the method for controlling the primary air for co-incinerating stale waste and domestic waste described above.

[0122] See Figure 2 , Figure 2 which is a schematic structural diagram of a device for controlling the primary air for co-incinerating stale waste and domestic waste disclosed in the embodiments of the present application.

[0123] As Figure 2 shown, the device may include:

[0124] A co-incineration ratio acquisition unit 11, configured to acquire the co-incineration ratio of stale waste and domestic waste at the current moment, where the co-incineration ratio is the ratio of the stale waste in the co-incineration of the stale waste and the domestic waste;

[0125] A primary air parameter driving and increasing unit 12, configured to drive the primary air fan to increase the fan speed when the co-incineration ratio is higher than the co-incineration ratio at the previous moment, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste, and drive the air preheater to increase the flow rate of the steam inside it to increase the temperature of the primary air;

[0126] A primary air parameter driving and decreasing unit 13, configured to drive the primary air fan to decrease the fan speed when the co-incineration ratio is lower than the co-incineration ratio at the previous moment, so as to decrease the air volume and air pressure of the primary air, and drive the air preheater to decrease the flow rate of the steam inside it to lower the temperature of the primary air.

[0127] Optionally, the primary air fan is equipped with a fan outlet regulating valve;

[0128] The primary air parameter driving and increasing unit includes:

[0129] A co-incineration increase ratio determination unit, configured to determine the co-incineration increase ratio of the co-incineration ratio relative to the co-incineration ratio at the previous moment when the co-incineration ratio is higher than the co-incineration ratio at the previous moment;

[0130] An air volume and air pressure increment calculation unit, configured to calculate the primary air volume increment and the primary air pressure increment according to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating the stale waste and the domestic waste;

[0131] A primary air temperature increment calculation unit, configured to calculate the primary air temperature increment according to the co-incineration increase ratio;

[0132] A fan speed regulation unit, configured to drive the primary air fan to increase the fan speed based on the primary air volume increment, so as to increase the air volume and air pressure of the primary air for co-incinerating the stale waste and the domestic waste;

[0133] A fan outlet valve regulation unit, configured to regulate the fan outlet valve based on the primary air pressure increment and the current speed of the primary air fan;

[0134] A steam flow enhancement unit, configured to drive the air preheater to enhance the steam flow inside it based on the primary air temperature increment, so as to increase the temperature of the primary air.

[0135] Optionally, the air volume and air pressure increment calculation unit includes:

[0136] A primary air volume increment calculation unit, configured to calculate the primary air volume increment according to the co-incineration increase ratio by using a first formula, and the first formula is:

[0137]

[0138] Wherein, is the co-incineration increase ratio, is the primary air volume increment, is the upper limit of the primary air volume provided by the primary air fan for an incinerator with scale i during co-incineration, is the lower limit of the primary air volume provided by the primary air fan for an incinerator with scale i during co-incineration;

[0139] A primary air pressure increment calculation unit, configured to calculate the primary air pressure increment according to the co-incineration increase ratio by using a second formula, and the second formula is:

[0140]

[0141] Wherein, is the upper limit of the primary air pressure required by an incinerator with scale i during co-incineration, is the lower limit of the primary air pressure required by an incinerator with scale i during co-incineration.

[0142] Optionally, the primary air temperature calculation unit includes:

[0143] A moisture content prediction unit for predicting the combined moisture content of the putrefied garbage and the domestic garbage according to the co-incineration increase ratio;

[0144] A third formula calculation unit for calculating the primary air temperature increment using the third formula, where the third formula is:

[0145]

[0146] where, is the co-incineration increase ratio, is the primary air temperature increment, is the upper limit of the primary air temperature provided by the air preheater for an incinerator of scale i during co-incineration, is the lower limit of the primary air temperature provided by the air preheater for an incinerator of scale i during co-incineration, is the moisture content, is the preset high value of the moisture content, is the preset low value of the moisture content.

[0147] Optionally, the device further includes:

[0148] A furnace temperature monitoring unit for monitoring the furnace temperature where the putrefied garbage and the domestic garbage are co-incinerated;

[0149] A primary air temperature increase unit for driving the air preheater to enhance the flow rate of the steam inside it to increase the primary air temperature if the furnace temperature is lower than the incineration lower limit value.

[0150] The device for controlling the primary air in the co-incineration of putrefied garbage and domestic garbage provided by the embodiments of the present application can be applied to the equipment for controlling the primary air in the co-incineration of putrefied garbage and domestic garbage, such as a primary air control system. Optionally, Figure 3 shows the hardware structure block diagram of the equipment for controlling the primary air in the co-incineration of putrefied garbage and domestic garbage. Referring to Figure 3 , the hardware structure of the equipment for controlling the primary air in the co-incineration of putrefied garbage and domestic garbage may include: at least one processor 1, at least one communication interface 2, at least one memory 3, and at least one communication bus 4;

[0151] In the embodiments of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 complete mutual communication through the communication bus 4;

[0152] The processor 1 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention, etc.;

[0153] The memory 3 may include high-speed RAM memory and may also include non-volatile memory, such as at least one disk memory;

[0154] Among them, the memory stores a program, and the processor can call the program stored in the memory. The program is used for:

[0155] Obtain the co-incineration ratio of stale garbage and domestic garbage at the current moment. The co-incineration ratio is the proportion of stale garbage in the co-incineration of stale garbage and domestic garbage;

[0156] When the co-incineration ratio is higher than the co-incineration ratio at the previous moment, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale garbage and domestic garbage, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air;

[0157] When the co-incineration ratio is lower than the co-incineration ratio at the previous moment, drive the primary air fan to decrease the fan speed to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the flow rate of the steam inside it to lower the air temperature of the primary air.

[0158] Optionally, the refined functions and extended functions of the program can be referred to the above description.

[0159] The embodiment of the present application also provides a storage medium, which can store a program suitable for the processor to execute. The program is used for:

[0160] Obtain the co-incineration ratio of stale garbage and domestic garbage at the current moment. The co-incineration ratio is the proportion of stale garbage in the co-incineration of stale garbage and domestic garbage;

[0161] When the co-incineration ratio is higher than the co-incineration ratio at the previous moment, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale garbage and domestic garbage, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air;

[0162] When the co-firing ratio decreases compared to the co-firing ratio at the previous moment, drive the primary air fan to reduce the fan speed, so as to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the flow rate of the steam inside it, so as to reduce the air temperature of the primary air.

[0163] Optionally, the refinement function and expansion function of the program can be referred to the above description.

[0164] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0165] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0166] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A primary air control method for co-incineration of stale waste and domestic waste, characterized in that, Applied to the primary air control system, the primary air control system includes a primary air fan and an air preheater; The method includes: Obtaining the co-incineration ratio of stale waste and domestic waste at the current moment, where the co-incineration ratio is the proportion of stale waste in the co-incineration of stale waste and domestic waste; When the co-incineration ratio increases compared to the previous moment, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale waste and domestic waste, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air; When the co-incineration ratio decreases compared to the previous moment, drive the primary air fan to reduce the fan speed to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the flow rate of the steam inside it to lower the air temperature of the primary air.

2. The method according to claim 1, wherein The primary air fan is equipped with a fan outlet regulating valve; When the co-incineration ratio increases compared to the previous moment, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale waste and domestic waste, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air, including: When the co-incineration ratio increases compared to the previous moment, determine the co-incineration increase ratio of the co-incineration ratio relative to the previous moment; According to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating stale waste and domestic waste, calculate the increment of the primary air volume and the increment of the primary air pressure; According to the co-incineration increase ratio, calculate the increment of the primary air temperature; Based on the increment of the primary air volume, drive the primary air fan to increase the fan speed to increase the air volume and air pressure of the primary air for co-incinerating stale waste and domestic waste; Based on the increment of the primary air pressure and the current speed of the primary air fan, adjust the fan outlet regulating valve; Based on the increment of the primary air temperature, drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air.

3. The method according to claim 2, wherein According to the co-incineration increase ratio and the scale of the incinerator used for co-incinerating stale waste and domestic waste, calculating the increment of the primary air volume and the increment of the primary air pressure includes: According to the co-incineration increase ratio, use the first formula to calculate the increment of the primary air volume, and the first formula is: wherein, is the co-firing increase ratio, is the primary air flow rate increment, is the upper limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-firing, is the lower limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-firing; According to the co-incineration increase ratio, use the second formula to calculate the increment of the primary air pressure, and the second formula is: wherein, is the upper limit of the primary air pressure required for the incinerator with scale i during co-incineration, is the lower limit of the primary air pressure required for the incinerator with scale i during co-incineration.

4. The method according to claim 2, characterized in that, According to the co-incineration increase ratio, calculating the increment of the primary air temperature includes: According to the co-incineration increase ratio, predict the common moisture content of stale waste and domestic waste; Use the third formula to calculate the increment of the primary air temperature, and the third formula is: Wherein, is the co-firing increase ratio, is the primary air temperature increment, is the upper limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-firing, is the lower limit of the primary air temperature provided by the air preheater for the incinerator with scale i during co-firing, is the moisture content, is the preset high value of the moisture content, is the preset low value of the moisture content.

5. The method according to any one of claims 1-4, characterized in that It further includes: Monitoring the furnace temperature where stale waste and domestic waste are co-incinerated; If the furnace temperature is lower than the lower limit value of incineration, drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air.

6. A primary air control device for co-incinerating stale waste and domestic waste, characterized in that, Applied to the primary air control system, the primary air control system includes a primary air fan and an air preheater; The device includes: The blending ratio acquisition unit is used to acquire the blending ratio of the stale waste and the domestic waste for co-incineration at the current moment, and the blending ratio is the proportion of the stale waste in the co-incineration of the stale waste and the domestic waste; The primary air parameter driving increase unit is used to drive the primary air fan to increase the fan speed when the blending ratio is higher than that at the previous moment, so as to increase the air volume and air pressure of the primary air for the co-incineration of the stale waste and the domestic waste, and drive the air preheater to enhance the flow rate of the steam inside it to increase the air temperature of the primary air; The primary air parameter driving decrease unit is used to drive the primary air fan to decrease the fan speed when the blending ratio is lower than that at the previous moment, so as to reduce the air volume and air pressure of the primary air, and drive the air preheater to reduce the flow rate of the steam inside it to lower the air temperature of the primary air.

7. The device according to claim 6, characterized in that, The primary air fan is equipped with a fan outlet regulating valve; The primary air parameter driving increase unit includes: The blending ratio increase proportion determination unit is used to determine the blending ratio increase proportion of the blending ratio relative to the blending ratio at the previous moment when the blending ratio is higher than that at the previous moment; The air volume and air pressure increment calculation unit is used to calculate the primary air volume increment and the primary air pressure increment according to the blending ratio increase proportion and the scale of the incinerator used for the co-incineration of the stale waste and the domestic waste; The primary air temperature increment calculation unit is used to calculate the primary air temperature increment according to the blending ratio increase proportion; The fan speed regulation unit is used to drive the primary air fan to increase the fan speed based on the primary air volume increment, so as to increase the air volume and air pressure of the primary air for the co-incineration of the stale waste and the domestic waste; The fan regulating valve regulation unit is used to regulate the fan outlet regulating valve based on the primary air pressure increment and the current speed of the primary air fan; The steam flow rate enhancement unit is used to drive the air preheater to enhance the flow rate of the steam inside it based on the primary air temperature increment to increase the air temperature of the primary air.

8. The device according to claim 7, wherein The air volume and air pressure increment calculation unit includes: The primary air volume increment calculation unit is used to calculate the primary air volume increment according to the blending ratio increase proportion by using the first formula, and the first formula is: Among them, is the co-firing increase ratio, is the primary air flow rate increment, is the upper limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-firing, is the lower limit of the primary air flow rate provided by the primary air fan for the incinerator with scale i during co-firing; The primary air pressure increment calculation unit is used to calculate the primary air pressure increment according to the blending ratio increase proportion by using the second formula, and the second formula is: Among them, is the upper limit of the primary air pressure required for the incinerator with scale i during co-incineration, is the lower limit of the primary air pressure required for the incinerator with scale i during co-incineration.

9. A primary air control device for co-incinerating stale waste and domestic waste, characterized in that, It includes a memory and a processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the primary air control method for the co-incineration of stale waste and domestic waste as described in any one of claims 1-5.

10. A storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by the processor, it implements each step of the primary air control method for the co-incineration of stale waste and domestic waste as described in any one of claims 1-5.

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