阅读说明：本技术 一种回转窑用危险废物智能焚烧控制方法、装置及系统 (Intelligent burning control method, device and system for hazardous wastes for rotary kiln ) 是由 郭志佳 马俊 宋静静 岳霞 于雪洁 靳增兵 李清泉 韩晓强 于 2021-10-18 设计创作，主要内容包括：一种回转窑用危险废物智能焚烧控制方法、装置及系统,该控制方法包括自动启炉程序和自动智能焚烧控制程序的执行；在自动启炉程序的执行前,根据回转窑炉膛温度作出是否执行的判断,执行自动启炉程序时,通过控制相应的辅助比例燃烧器和鼓风设备及引风机的配合,完成启炉程序；自动智能焚烧控制程序包括用以分别调整回转窑炉膛温度、二燃室温度、二燃室出口氧含量以及回转窑炉膛负压的子程序。危险废物智能焚烧控制装置用于所述控制方法的实施,危险废物智能焚烧控制系统包括危险废物智能焚烧控制装置和监控系统以及PLC系统。本发明可降低操作人员的劳动强度,避免二次污染的产生,提高危险废物焚烧处理的自动化水平。(An intelligent hazardous waste incineration control method, device and system for a rotary kiln are disclosed, wherein the control method comprises the execution of an automatic furnace starting program and an automatic intelligent incineration control program; before the automatic furnace starting program is executed, judging whether the automatic furnace starting program is executed or not according to the temperature of the hearth of the rotary kiln, and when the automatic furnace starting program is executed, finishing the furnace starting program by controlling the matching of a corresponding auxiliary proportional burner, a blast device and an induced draft fan; the automatic intelligent burning control program comprises a subprogram for respectively adjusting the temperature of the rotary kiln hearth, the temperature of the secondary combustion chamber, the oxygen content of the secondary combustion chamber outlet and the negative pressure of the rotary kiln hearth. The hazardous waste intelligent incineration control device is used for implementing the control method, and the hazardous waste intelligent incineration control system comprises the hazardous waste intelligent incineration control device, a monitoring system and a PLC system. The invention can reduce the labor intensity of operators, avoid the generation of secondary pollution and improve the automation level of the incineration treatment of hazardous wastes.)

1. The intelligent hazardous waste incineration control method for the rotary kiln is characterized in that a temperature detection device detects the temperature of a hearth of the rotary kiln, and corresponding programs are executed according to the size relation between the detected temperature of the hearth of the rotary kiln and a starting temperature range:

(1) when the detected hearth temperature of the rotary kiln is lower than the lower limit value of the starting temperature range, executing an automatic furnace starting program;

in the automatic furnace starting procedure, firstly, if the temperature of a hearth of the rotary kiln is less than 250 ℃, a kiln body of the rotary kiln rotates at a low speed, meanwhile, an auxiliary proportional burner of the rotary kiln and an auxiliary proportional burner of a secondary combustion chamber ignite a big fire, when the temperature of the hearth of the rotary kiln rises to 250 ℃, primary air blowing equipment and secondary air blowing equipment respectively blow air to the hearth of the rotary kiln and the secondary combustion chamber, and an induced draft fan operates simultaneously, and when the temperature of the hearth of the rotary kiln reaches a starting temperature range, the automatic furnace starting process is completed;

(2) when the detected temperature of the hearth of the rotary kiln is within the starting temperature range or is higher than the upper limit of the starting temperature range, executing an automatic intelligent burning control program;

the automatic intelligent burning control program comprises a subprogram for respectively adjusting the temperature of the hearth of the rotary kiln, the temperature of the secondary combustion chamber, the oxygen content of the outlet of the secondary combustion chamber and the negative pressure of the hearth of the rotary kiln, and the specific subprogram is as follows:

(2-1) temperature control subprogram of the rotary kiln: when the detected actual temperature of the rotary kiln hearth is lower than the set working furnace temperature range, starting feeding equipment of the rotary kiln to increase the feeding amount of materials, increasing the blast amount of the rotary kiln by primary blast equipment, and increasing the temperature of the rotary kiln hearth to be within the set temperature range; when the detected actual temperature of the rotary kiln hearth is higher than the set furnace temperature range, reducing the feeding amount and the blast amount of the rotary kiln so as to reduce the temperature of the rotary kiln hearth to the set temperature range;

(2-2) second combustion chamber temperature control subroutine: when the actual temperature of the secondary combustion chamber is lower than the lower limit value of the set temperature range, the secondary combustion chamber auxiliary proportional burner is ignited to increase the actual temperature of the secondary combustion chamber to be within the set temperature range; when the actual temperature of the secondary combustion chamber is higher than the upper limit value of the set temperature range, reducing the feeding amount of the rotary kiln and reducing the blast volume of secondary blast equipment so as to reduce the actual temperature of the secondary combustion chamber to the set temperature range;

(2-3) oxygen content control subroutine: when the oxygen content at the outlet of the secondary combustion chamber is lower than the lower limit of the set range, reducing the rotation speed of the rotary kiln, and simultaneously increasing the blast volume of the rotary kiln by primary blast equipment to ensure that the oxygen content is increased to the set range; when the oxygen content at the outlet of the secondary combustion chamber is higher than the upper limit of the set range, the rotating speed of the rotary kiln is improved, and meanwhile, the primary air blowing device reduces the air blowing amount to the rotary kiln; reducing the oxygen content to a set range;

(2-4) furnace negative pressure control subroutine: when the negative pressure of the rotary kiln hearth is reduced to be out of the set range, the negative pressure of the rotary kiln hearth is reduced to be within the set range by increasing the working frequency of the induced draft fan; when the negative pressure of the rotary kiln hearth is increased to be beyond the set range, the negative pressure of the rotary kiln hearth is increased to be within the set range by reducing the working frequency of the induced draft fan.

2. The intelligent incineration control method for the hazardous wastes for the rotary kiln as recited in claim 1, characterized in that the start-up temperature range is 650 ℃ -750 ℃.

3. The intelligent hazardous waste incineration control method for the rotary kiln as recited in claim 1, wherein the working furnace temperature range set for the rotary kiln is 850 ℃ to 1000 ℃.

4. The intelligent incineration control method for the hazardous wastes for the rotary kiln as recited in any one of claims 1 to 3, characterized in that when the feeding quantity and the blast quantity of the rotary kiln are increased and the temperature of the hearth of the rotary kiln still cannot be raised to the set temperature range, the auxiliary proportional burner of the rotary kiln is started.

5. The intelligent incineration control method for hazardous wastes for the rotary kiln as recited in claim 1, wherein the temperature range set for the second combustion chamber is 1100 ℃ to 1200 ℃.

6. The intelligent hazardous waste incineration control method for the rotary kiln as claimed in claim 1, wherein the set range of the oxygen content at the outlet of the secondary combustion chamber is 6% -10%.

7. The intelligent incineration control method for the hazardous wastes for the rotary kiln as recited in any one of claims 5 and 6, characterized in that when the oxygen content in the secondary combustion chamber cannot be increased to a set range by reducing the rotation speed of the rotary kiln and increasing the blast volume of the rotary kiln, the blast volume of the secondary combustion chamber by the secondary blast equipment is increased; and when the oxygen content in the secondary combustion chamber cannot be reduced to a set range by increasing the rotating speed of the rotary kiln and reducing the blast quantity of the rotary kiln, reducing the blast quantity of the secondary blast equipment.

8. The intelligent hazardous waste incineration control method for the rotary kiln as recited in claim 1, wherein the set range of the negative pressure of the rotary kiln furnace chamber is-150 KPa to-50 KPa.

9. An intelligent hazardous waste incineration control device for a rotary kiln is used for implementing the intelligent hazardous waste incineration control method according to any one of claims 1 to 8, and is characterized by comprising a CPU, a communication module, an A/D module of an incineration related instrument, an incineration related device driving module, a program storage module and a data storage module, wherein the communication module is used for establishing communication with a PLC system, terminals of the A/D module of the incineration related instrument are used for being connected with wiring corresponding to the incineration related instrument in the PLC system, and terminals of the incineration related device driving module are used for being connected with wiring corresponding to the incineration related device in the PLC system.

10. An intelligent hazardous waste incineration control system for a rotary kiln, comprising a monitoring system and a PLC system, and further comprising the intelligent hazardous waste incineration control device as claimed in claim 9.

Technical Field

The invention belongs to the field of hazardous waste disposal, and particularly relates to an intelligent incineration control method, a control device and a control system for hazardous waste for a rotary kiln.

Background

With the rapid development of industrial technology, more and more wastes are generated by human beings, and the wastes have great adverse effects on human beings and the environment. In which especially hazardous waste causes great harm to humans and the environment. Therefore, the harmless, quantitative reduction and resource disposal of the hazardous waste are very urgent and important. The rotary kiln hazardous waste incineration technology is widely applied.

In order to ensure good incineration of hazardous waste and avoid secondary pollution, the intelligent incineration control device for hazardous waste for the rotary kiln with a high technical level is a foundation.

In the prior art, the incineration of dangerous wastes is generally controlled by an upper computer and a lower computer. The upper computer is a monitoring system, and the lower computer is a PLC system. The PLC system is connected with frequency converters of feeding, blast, rotary kiln and draught fan, and is connected with parameters such as hearth temperature, hearth negative pressure and oxygen content at the outlet of the rotary kiln. The PLC communicates with the monitoring system via Ethernet. The operator can monitor the incineration state through the monitoring system, and can also control equipment such as a motor, a valve and the like to control the incineration of the hazardous waste.

In the prior art, the control of incineration parameters is generally realized by manually operating related equipment by an operator on a monitoring system, or by technical means such as operator operation and control system PID control, and the like, so that semi-automatic incineration control is realized. Such a control technique is labor intensive for operators, has a low control level, and is liable to cause unstable combustion and secondary pollution.

Disclosure of Invention

The invention aims to provide an intelligent incineration control method, a control device and a control system for hazardous waste for a rotary kiln, so as to reduce the labor intensity of operators, avoid secondary pollution and improve the automation level of incineration treatment of the hazardous waste.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a hazardous waste intelligence burns control method for rotary kiln, detects rotary kiln furnace temperature by temperature-detecting device, according to the big or small relation of rotary kiln furnace temperature and the start-up temperature scope that detects, carries out corresponding procedure:

(1) when the detected hearth temperature of the rotary kiln is lower than the lower limit value of the starting temperature range, executing an automatic furnace starting program;

in the automatic furnace starting procedure, firstly, if the temperature of a hearth of the rotary kiln is less than 250 ℃, a kiln body of the rotary kiln rotates at a low speed, meanwhile, an auxiliary proportional burner of the rotary kiln and an auxiliary proportional burner of a secondary combustion chamber ignite a big fire, when the temperature of the hearth of the rotary kiln rises to 250 ℃, primary air blowing equipment and secondary air blowing equipment respectively blow air to the hearth of the rotary kiln and the secondary combustion chamber, and an induced draft fan operates simultaneously, and when the temperature of the hearth of the rotary kiln reaches a starting temperature range, the automatic furnace starting process is completed;

(2) when the detected temperature of the hearth of the rotary kiln is within the starting temperature range or is higher than the upper limit of the starting temperature range, executing an automatic intelligent burning control program;

the automatic intelligent burning control program comprises a subprogram for respectively adjusting the temperature of the hearth of the rotary kiln, the temperature of the secondary combustion chamber, the oxygen content of the outlet of the secondary combustion chamber and the negative pressure of the hearth of the rotary kiln, and the specific subprogram is as follows:

(2-1) temperature control subprogram of the rotary kiln: when the detected actual temperature of the rotary kiln hearth is lower than the set working furnace temperature range, starting feeding equipment of the rotary kiln to increase the feeding amount of materials, increasing the blast amount of the rotary kiln by primary blast equipment, and increasing the temperature of the rotary kiln hearth to be within the set temperature range; when the detected actual temperature of the rotary kiln hearth is higher than the set furnace temperature range, reducing the feeding amount and the blast amount of the rotary kiln so as to reduce the temperature of the rotary kiln hearth to the set temperature range;

(2-2) second combustion chamber temperature control subroutine: when the actual temperature of the secondary combustion chamber is lower than the lower limit value of the set temperature range, the secondary combustion chamber auxiliary proportional burner is ignited to increase the actual temperature of the secondary combustion chamber to be within the set temperature range; when the actual temperature of the secondary combustion chamber is higher than the upper limit value of the set temperature range, reducing the feeding amount of the rotary kiln and reducing the blast volume of secondary blast equipment so as to reduce the actual temperature of the secondary combustion chamber to the set temperature range;

(2-3) oxygen content control subroutine: when the oxygen content at the outlet of the secondary combustion chamber is lower than the lower limit of the set range, reducing the rotation speed of the rotary kiln, and simultaneously increasing the blast volume of the rotary kiln by primary blast equipment to ensure that the oxygen content is increased to the set range; when the oxygen content at the outlet of the secondary combustion chamber is higher than the upper limit of the set range, the rotating speed of the rotary kiln is improved, and meanwhile, the primary air blowing device reduces the air blowing amount to the rotary kiln; reducing the oxygen content to a set range;

(2-4) furnace negative pressure control subroutine: when the negative pressure of the rotary kiln hearth is reduced to be out of the set range, the negative pressure of the rotary kiln hearth is reduced to be within the set range by increasing the working frequency of the induced draft fan; when the negative pressure of the rotary kiln hearth is increased to be beyond the set range, the negative pressure of the rotary kiln hearth is increased to be within the set range by reducing the working frequency of the induced draft fan.

The starting temperature range is 650-750 ℃.

The working furnace temperature range set for the rotary kiln is 850-1000 ℃.

And when the temperature of the hearth of the rotary kiln cannot be increased to the set temperature range by increasing the feeding quantity and the blowing quantity of the rotary kiln, starting the auxiliary proportional burner of the rotary kiln.

For the second combustion chamber, the temperature range is set to 1100-1200 ℃.

The set range of the oxygen content at the outlet of the secondary combustion chamber is 6-10%.

When the oxygen content in the secondary combustion chamber cannot be increased to a set range by reducing the rotating speed of the rotary kiln and increasing the blast volume of the rotary kiln, increasing the blast volume of secondary blast equipment to the secondary combustion chamber; and when the oxygen content in the secondary combustion chamber cannot be reduced to a set range by increasing the rotating speed of the rotary kiln and reducing the blast quantity of the rotary kiln, reducing the blast quantity of the secondary blast equipment.

The setting range of the negative pressure of the rotary kiln hearth is-150 KPa to-50 KPa.

An intelligent hazardous waste incineration control device for a rotary kiln is used for implementing the intelligent hazardous waste incineration control method. The intelligent waste incineration control device comprises a CPU, a communication module, an incineration related instrument A/D module, an incineration related device driving module, a program storage module and a data storage module, wherein the communication module is used for establishing communication with a PLC system, terminals of the incineration related instrument A/D module are used for being connected with wiring corresponding to the incineration related instrument in the PLC system, and terminals of the incineration related device driving module are used for being connected with wiring corresponding to the incineration related device in the PLC system.

The utility model provides a control system is burned to hazardous waste intelligence for rotary kiln, includes monitored control system and PLC system, still includes hazardous waste intelligence burn controlling means.

The invention has the beneficial effects that: the intelligent incineration control device provided by the invention has the advantages that the cost is low, the reliability is high, the hazardous waste can be kept in a good incineration state in the rotary kiln, the incineration can be continuously and normally carried out, the labor intensity of operators is reduced compared with a traditional hazardous waste incineration manual mode or a mode of operating the operators and controlling a system PID (proportion integration differentiation), the generation of secondary pollution is effectively avoided, and meanwhile, the automation level is also improved. The popularization has good promotion effect on the improvement of the automation level of the hazardous waste incineration industry.

The scheme provided by the invention can be directly applied to a new project for burning treatment of the hazardous waste rotary kiln, and can also be used for reconstruction of the built project.

Drawings

FIG. 1 is a flow chart of the intelligent incineration control method of hazardous waste for the rotary kiln.

FIG. 2 is a schematic structural diagram of the intelligent hazardous waste incineration control device for the rotary kiln.

FIG. 3 is a schematic diagram showing the construction of a hazardous waste incineration control system for a rotary kiln according to the prior art.

FIG. 4 is a schematic structural diagram of an intelligent hazardous waste incineration control system for a rotary kiln according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, but the invention is not limited thereto.

Example 1: before the implementation of the intelligent hazardous waste incineration control method for the rotary kiln, the furnace baking process of the rotary kiln and a secondary combustion chamber, the single-machine test run process and the no-load linkage test run process of hazardous waste incineration process line equipment must be completed.

Firstly, the intelligent burning control device detects the temperature of a hearth of the rotary kiln and the temperature of a secondary combustion chamber by depending on a corresponding temperature detection device, when the temperature of the hearth of the rotary kiln is lower than the lower limit of the starting temperature range, the intelligent burning control device executes an automatic furnace starting program, and when the temperature of the hearth of the rotary kiln is in the starting temperature range or higher than the upper limit of the starting temperature range, the intelligent burning control device executes an automatic intelligent burning control program.

The starting temperature range is 650-750 ℃.

Automatic start-up procedure: firstly, if the temperature of a hearth of the rotary kiln is less than 250 ℃, the intelligent burning control device drives a main motor of the rotary kiln to operate, so that the rotary kiln rotates at a low speed (0.2 r/min); and simultaneously, sending a big fire ignition command to the rotary kiln auxiliary proportional burner and the secondary combustion chamber auxiliary proportional burner, and igniting big fire by the rotary kiln auxiliary proportional burner and the secondary combustion chamber auxiliary proportional burner. The temperature of the rotary kiln hearth and the temperature of the secondary combustion chamber gradually rise along with the combustion of the burner. When the temperature of the rotary kiln hearth rises to 250 ℃, the intelligent burning control device sends a command to drive the primary air blowing device and the secondary air blowing device to blow air to the rotary kiln hearth and the secondary combustion chamber respectively, and simultaneously drives the induced draft fan to operate. And when the temperature of the rotary kiln reaches 650-750 ℃, completing the automatic furnace starting process.

In the automatic starting procedure, if the temperature of the rotary kiln hearth is greater than or equal to 250 ℃, in the low-speed rotation process of the rotary kiln body, a primary air blowing device, a secondary air blowing device and an induced draft fan are directly started without starting a rotary kiln auxiliary proportional burner and a secondary combustion chamber auxiliary proportional burner, and in the same way, when the temperature of the rotary kiln reaches 650-750 ℃, the automatic starting process is completed.

After the automatic intelligent burning control program is started, when the materials are put into the rotary kiln and can be burned in a self-sustaining mode, the auxiliary proportional burner of the rotary kiln and the auxiliary proportional burner of the secondary combustion chamber can be closed. If the heat value of the material can not meet the requirements of the treatment process, the auxiliary proportional burner of the rotary kiln and the auxiliary proportional burner of the secondary combustion chamber can be opened to a proper proportion according to actual conditions so as to meet the process requirements.

The automatic intelligent burning control program respectively judges the temperature of the hearth of the rotary kiln, the temperature of the second combustion chamber, the oxygen content of the outlet of the second combustion chamber and the negative pressure range or the numerical value of the hearth of the rotary kiln, and executes corresponding subprograms according to the judgment rules. Specifically, the following description is made.

1. A rotary kiln temperature control subprogram:

(1) when the actual furnace temperature of the rotary kiln is lower than the set working temperature range of 850-1000 ℃, the intelligent burning control device increases the material supply amount of the feeding equipment to the rotary kiln, and increases the blast volume of the primary blast equipment to ensure that the burning is in a reasonable air-fuel ratio range, so that the actual furnace temperature of the rotary kiln is increased to be within the set temperature range; if the temperature can not be increased to the required temperature range through the process, the intelligent burning control device further opens the auxiliary proportional burner of the rotary kiln to increase the actual furnace temperature to the set temperature range.

(2) When the actual rotary kiln hearth temperature is higher than the set working temperature range of 850-1000 ℃, the intelligent burning control device reduces the feeding amount of the rotary kiln, and reduces the blast volume of the primary blast equipment to reduce the rotary kiln hearth temperature to the set working temperature range in order to ensure that the burning is in a reasonable air-fuel ratio range.

Wherein, the proper air-fuel ratio range is calculated by the material supply amount of the feeding equipment according to the material balance of combustion, and an upper limit and a lower limit are added on the basis, the upper limit and the lower limit are generally set according to the process requirements, and can be set to +/-0.5 if yes. Normally the air-fuel ratio range is set to 6-9, i.e. approximately 6 to 9 square meters of air are required per 1kg of hazardous waste incinerated.

2. And a second combustion chamber temperature control subroutine:

(1) when the actual temperature of the secondary combustion chamber is lower than the lower limit value of the set temperature range of 1100-1200 ℃, the intelligent incineration control device opens the secondary combustion chamber auxiliary proportional burner to increase the actual temperature of the secondary combustion chamber to the set temperature range.

(2) When the actual temperature of the secondary combustion chamber is higher than the upper limit value of the set temperature range of 1100-1200 ℃, the intelligent burning control device reduces the feeding amount of the feeding equipment to the rotary kiln, and reduces the blast volume of the secondary blast equipment to reduce the actual temperature of the secondary combustion chamber to the set temperature range in order to ensure that the burning is in a reasonable air-fuel ratio range.

3. Oxygen content control subroutine:

(1) when the oxygen content at the outlet of the secondary combustion chamber is lower than the lower limit of the set range of 6-10%, the intelligent burning control device drives the main motor frequency converter of the rotary kiln to reduce the rotating speed of the rotary kiln, and simultaneously, the primary air blowing device increases the air blowing amount to the rotary kiln, so that the oxygen content is increased to the set range, the materials are reasonably burned in the kiln body, and the burning is also ensured to be in a reasonable air-fuel ratio range in the process. If the oxygen content in the secondary combustion chamber can not be increased to the set range through the steps, the intelligent incineration control device increases the blast volume of the secondary blast equipment, so that the oxygen content is increased to the set range.

(2) The expected value of the oxygen content at the outlet of the secondary combustion chamber is 8%, when the oxygen content at the outlet of the secondary combustion chamber is higher than the upper limit of the set range of 6% -10%, the intelligent burning control device drives the main motor frequency converter of the rotary kiln to increase the rotating speed of the rotary kiln (the rotating speed is limited to 0.1-1.1 r/min), and meanwhile, the primary air blowing device reduces the air blowing quantity to the rotary kiln, so that materials are fully burned in the kiln body, and the oxygen content is guaranteed to be reduced to the set range. If the oxygen content can not be reduced to the set range through the steps, the blowing amount of the secondary blowing equipment is reduced, and the oxygen content is reduced to the set range.

4. Hearth negative pressure control subprogram:

because the induced draft fan is arranged at the tail end of the process section and the rotary kiln is arranged at the head end, when the induced draft air quantity changes, the negative pressure of the hearth changes after a period of time, and therefore the variable quantity of the induced draft air quantity of the induced draft fan is taken as a feedforward signal to be introduced into the controller to be taken as an auxiliary parameter for negative pressure regulation of the hearth.

(1) When the negative pressure of the rotary kiln hearth is reduced to be outside a set range of-150 KPa to-50 KPa, even when positive pressure occurs, the intelligent burning control device combines the variable quantity of the induced air fan to increase the working frequency of the induced air fan, so that the negative pressure of the rotary kiln hearth is reduced to be within the set range;

(2) when the negative pressure of the rotary kiln hearth is increased to be out of the set range, the intelligent burning control device combines the variable quantity of the induced air fan to reduce the working frequency of the induced air fan, so that the negative pressure of the rotary kiln hearth is increased to be within the set range.

Example 2: an intelligent hazardous waste incineration control device for a rotary kiln is used for implementing the intelligent hazardous waste incineration control method in embodiment 1. As shown in fig. 2, the intelligent burning control device comprises a CPU, a communication module, a burning related instrument a/D module, a burning related device driving module, a program storage module and a data storage module, wherein the communication module is used for establishing communication with the PLC system, terminals of the burning related instrument a/D module are used for connecting with wiring corresponding to the burning related instrument in the PLC system, and terminals of the burning related device driving module are used for connecting with wiring corresponding to the burning related device in the PLC system.

Example 3: the utility model provides a control system is burned to hazardous waste intelligence for rotary kiln, includes monitored control system and PLC system, still includes embodiment 2 the hazardous waste intelligence burn controlling means.

Example 4: the intelligent burning control device provided by the invention is simple to implement on a new project and simple to implement on the reconstruction of an existing project. Since the implementation on the new project is relatively simple, the reconstruction project is taken as an example for explanation.

Before transformation, the rotary kiln uses the structure of embodiment 3 with hazardous waste intelligence burning control system, as shown in figure 3, PLC system Ethernet and monitored control system communication, PLC system access burn relevant equipment, burn relevant instrument, other equipment and other instruments.

Incineration-related equipment includes: the feeding device (including frequency conversion screw conveyer and the like can continuously change the feeding amount, but is not limited to the mode), the primary air blowing device (including frequency conversion air blower or adjusting valve capable of continuously changing the air volume, blowing air into the hearth of the rotary kiln), the secondary air blowing device (including frequency conversion air blower or adjusting valve capable of continuously changing the air volume, blowing air into the secondary combustion chamber), the auxiliary proportional burner of the rotary kiln, the auxiliary proportional burner of the secondary combustion chamber, the main motor frequency converter of the rotary kiln, the frequency converter of the induced draft fan and the like.

The incineration-related instrument includes: a furnace temperature measuring instrument, a furnace negative pressure measuring instrument, a secondary combustion chamber outlet oxygen content analyzer, an induced draft fan induced flow instrument and the like.

Other devices include: a slag extractor, a washing centrifugal pump, a system cooling water pump, a lime disk feeder, an activated carbon disk feeder, a screw air compressor and the like. Other meters include: a quench tower inlet flue gas temperature instrument, a quench tower outlet flue gas temperature instrument, a bag-type dust collector inlet temperature instrument, a bag-type dust collector outlet flue gas pressure difference instrument, a draught fan inlet temperature instrument and the like.

The operator can monitor the incineration state through the monitoring system, and can also control equipment such as a motor, a valve and the like to control the incineration of the hazardous waste.

When reforming transform, from the hardware, find out the wiring of burning relevant equipment and burning relevant instrument that the PLC system connects earlier, on receiving the corresponding terminal that controlling means was burned to the intelligence, then in receiving the PLC system through the data line to controlling means's RS485 communication interface is burned to the intelligence, as shown in figure 4 after the hardware transformation.

And in terms of software, the monitoring of the original monitoring system on the incineration related equipment and the monitoring on the incineration related instrument parameters are removed, and related data are transmitted to the PLC system through the communication of the intelligent incineration control device. In addition, necessary parameters for realizing manual and automatic switching, alarming and the like of the intelligent incineration control are added between the PLC system and the intelligent incineration control device.

The setting of intelligent incineration control device is accomplished promptly like this to put into operation in hazardous waste burns the in-process, realize that intelligence burns the control function.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the specific embodiments of the present invention can be modified or substituted with equivalents with reference to the above embodiments, and any modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims to be appended.