CN116878001A - Control system and control method for waste liquid incinerator - Google Patents
Control system and control method for waste liquid incinerator Download PDFInfo
- Publication number
- CN116878001A CN116878001A CN202310792582.0A CN202310792582A CN116878001A CN 116878001 A CN116878001 A CN 116878001A CN 202310792582 A CN202310792582 A CN 202310792582A CN 116878001 A CN116878001 A CN 116878001A
- Authority
- CN
- China
- Prior art keywords
- control system
- safety
- incinerator
- waste liquid
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 108
- 239000002699 waste material Substances 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 230000008569 process Effects 0.000 claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 230000001276 controlling effect Effects 0.000 claims abstract description 7
- 238000011112 process operation Methods 0.000 claims abstract description 4
- 238000010926 purge Methods 0.000 claims description 26
- 230000001960 triggered effect Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- ULFUTCYGWMQVIO-PCVRPHSVSA-N [(6s,8r,9s,10r,13s,14s,17r)-17-acetyl-6,10,13-trimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1h-cyclopenta[a]phenanthren-17-yl] acetate;[(8r,9s,13s,14s,17s)-3-hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-17-yl] pentano Chemical compound C1CC2=CC(O)=CC=C2[C@@H]2[C@@H]1[C@@H]1CC[C@H](OC(=O)CCCC)[C@@]1(C)CC2.C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 ULFUTCYGWMQVIO-PCVRPHSVSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 206010063385 Intellectualisation Diseases 0.000 description 3
- 230000006854 communication Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 235000011470 Adenanthera pavonina Nutrition 0.000 description 1
- 240000001606 Adenanthera pavonina Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The application discloses a control system of a waste liquid incinerator, which comprises a main burner and a secondary combustion chamber, and comprises: the process safety control system is in signal connection with a plurality of cut-off valves and a plurality of regulating valves of the waste liquid incinerator and is used for controlling the process operation of the waste liquid incinerator and monitoring the safety operation of the waste liquid incinerator; and the DCS control system is in signal connection with the process safety control system and is used for carrying out opening adjustment control on a plurality of non-safety operated regulating valves in the safety operation process of the waste liquid incinerator. In the BMS program architecture, the BMS and the SIS are intelligently fused, the driving sequence and the current step can be intelligently guided, intelligent display, judgment and early warning are carried out on the conditions in the execution process of each step, the convenience and safety of operation are improved, the safety of the system, production and personnel are guaranteed, the process alarm is reasonably optimized, and the operation process of an operator is simplified.
Description
Technical Field
The application belongs to the technical field of industrial control, and particularly relates to a waste liquid incinerator control system and a waste liquid incinerator control method.
Background
The three-section waste liquid incinerator is a device for treating waste liquid, and mainly consists of a main burner, four burners of a secondary combustion chamber A/B, SCR (Selective Catalytic Reduction, selective catalytic reduction denitration technology) and a waste heat recovery device. The equipment decomposes waste liquid and converts the waste liquid into harmless substances through high-temperature combustion, and simultaneously utilizes the waste heat recovery device to recover energy, so that the energy-saving and environment-friendly effects are realized. Waste incinerator burner management, including fuel supply, air conditioning, ignition and combustion control, requires periodic inspection and maintenance to ensure proper operation. Emergency stop systems based on safety instrumented controls immediately shut off the fuel supply and shut down the burner when a fault or dangerous situation occurs to protect equipment and personnel. Such systems typically consist of sensors, controllers, actuators, and the like.
The conventional DCS (Distributed Control System ) control of the waste liquid incinerator comprises the steps of purging a main combustion system, starting the main combustion system, purging the main burner, starting the main burner, stopping the main burner, purging the two-chamber burner, starting the two-chamber burner, stopping the two-chamber burner and the like. The process is complicated, mutually nested and restricted, and the risk is high. The conventional manual control has complex steps, and the monitoring information, the operation information, the alarm information and the process state information are mixed and interwoven, so that the requirements on the professional, the proficiency, the concentration degree and the time cost input of operators are very high.
Meanwhile, in order to ensure the operation safety of the combustion furnace, an ESD (Emergency Shutdown Device, emergency stop device) system is constructed by adopting an independent SIS system (Safety Instrumented System, safety instrument system), and the scheme is independent of a DCS control system, so that the hardware cost is increased. The common IO bit number of the DCS and the ESD system is crossed frequently, the technological parameters are adjusted frequently, and the alarm information is redundant. And the three-section waste liquid combustion furnace needs to flexibly start, stop and adjust working conditions according to waste liquid components, working condition change, heating requirements and the like, so that parameters such as natural gas air quantity, valve opening and the like can be changed, and the parameters cannot be accurately grasped. The real-time parameters and the state are updated and modified to be communicated to the ESD system according to the driving requirement of the DCS control system before each driving, so that the safety is low in the communication process, and the stable operation and the later maintenance of the system are not facilitated. Moreover, the combustion control is complex, the sequence control is mutually nested, and the restriction relation caused by the influence of safety factors is needed to be fully considered, so that the operation debugging and the parameter setting are not easy to carry out, and the ideal SIL (Safety Integrity Level, safety integrity grade) safety grade requirement is difficult to be achieved.
Disclosure of Invention
In order to solve the problems, the application aims to provide a waste liquid incinerator control system and a control method, wherein the waste liquid incinerator control system intelligently fuses a BMS and an SIS system in a BMS program framework, can intelligently guide a driving sequence and a current step, intelligently displays, judges and early warns conditions in the execution process of each step, improves the convenience and safety of operation, and reasonably optimizes process alarms and simplifies the operation process of operators on the premise of ensuring the safety of systems, production and personnel.
In order to achieve the above purpose, the technical scheme of the application is as follows: a waste incinerator control system, the waste incinerator comprising a main burner, a secondary combustion chamber, characterized by comprising: the process safety control system is in signal connection with a plurality of cut-off valves and a plurality of regulating valves of the waste liquid incinerator and is used for controlling the process operation of the waste liquid incinerator and monitoring the safety operation of the waste liquid incinerator; and the DCS control system is in signal connection with the process safety control system and is used for carrying out opening adjustment control on a plurality of non-safety operated regulating valves in the safety operation process of the waste liquid incinerator.
Preferably, the process safety control system comprises a BMS control system and an SIS control system, wherein the BMS control system automatically performs purging, driving and stopping sequence control according to a preset program, and the SIS control system monitors and controls a plurality of cut-off valves of the waste liquid incinerator according to preset parameters and/or interlocking conditions based on the process stage of the incinerator so as to realize overall process safety monitoring of the system.
Preferably, the process safety control system monitors the environmental parameters in the incinerator through temperature, pressure, flow and liquid level sensors, compares the acquired sensor parameters with corresponding thresholds, and immediately executes relevant safety interlocking actions and pops up interlocking alarm information when the interlocking is triggered.
Preferably, when the interlock is triggered, the sequential control logic of the current process stage is automatically shut down, a safety shutdown logic is executed, and system initialization is performed to effect safety monitoring of the combustion process.
Preferably, the process safety control system further comprises an HMI interface, wherein the HMI interface displays the process stage of the incinerator in real time and displays a corresponding abnormality prompt when the incinerator is abnormal.
Preferably, the DCS control system is capable of receiving a user's modification of a preset regulating valve parameter and issuing the modified parameter to a target regulating valve through the process safety control system.
Preferably, AI signals of the plurality of regulating valve opening degrees are input to an AI terminal board of the SIS control system through hard wires so as to improve the safety level of the SIL loop and monitor valve opening degree parameters in the whole process of the SIS control system.
Based on the same conception, the application also provides a control method of the waste liquid incinerator, which comprises the following steps: initializing a BMS control system in a process safety control system, and performing self-checking on all sensors and valve actuators in the BMS control system; the method comprises the steps of obtaining purging parameters input by a preset interface, and purging the incinerator based on the purging parameters; detecting whether the BMS control system meets driving conditions or not, and performing driving operation based on a preset ignition valve given value under the condition that the driving conditions are met; after the driving is successful, releasing the control authority of a preset regulating valve to a DCS control system; the SIS control system in the process safety control system monitors and controls a plurality of cut-off valves of the waste liquid incinerator according to preset parameters and/or interlocking conditions based on the process stage of the system so as to realize the whole process safety monitoring of the system.
Preferably, the method further comprises: the process safety control system monitors the environmental parameters in the incinerator through temperature, pressure, flow and liquid level sensors, compares the acquired sensor parameters with corresponding threshold values, immediately executes relevant safety interlocking actions when the interlocking is triggered, and pops up interlocking alarm information; and simultaneously, automatically cutting off the sequential control logic of the current process stage, executing the safety stopping logic and initializing the system so as to realize the safety monitoring of the combustion process.
Preferably, when the parameter of the preset cut-off valve detected by the SIS control system exceeds a preset threshold, the system is initialized based on preset safe parking logic in the BMS control system.
By adopting the technical scheme, the application has the following advantages and positive effects compared with the prior art:
1. according to the technical scheme, in the BMS program framework, the BMS and the SIS system are intelligently fused, the driving sequence and the current step can be intelligently guided, intelligent display, judgment and early warning are carried out on the conditions in the execution process of each step, the convenience and safety of operation are improved, the safety of the system, production and personnel are guaranteed, the process alarm is reasonably optimized, and the operation process of an operator is simplified.
2. Based on preset interlocking logic, when the interlocking is triggered, the technical scheme of the application executes relevant interlocking action and pops up corresponding interlocking alarm information, so that the operator is timely reminded and the combustion process is ensured to be in a safe state. The safety interlock priority is set to be the highest to ensure the safe operation of the system.
3. According to the technical scheme, the instrument IO data, the operation parameters and the monitoring data are uniformly and integrally managed, the intelligent process flow control is realized, the sequential control of purging, driving, stopping and the like is automatically completed, and the parameters of each flow are monitored in the whole flow. The key alarm information of the system is prompted in steps, redundancy of irrelevant alarm information is avoided, and the effectiveness and usability of the whole system information are improved.
Drawings
The application is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a system architecture diagram of the present application;
FIG. 2 is a schematic signal transmission diagram of the control system of the present application;
FIG. 3 is a flow chart showing an ignition control method of the waste liquid incinerator according to an embodiment of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and the specific examples. Advantages and features of the application will become more apparent from the following description and from the claims. It is noted that the drawings are in a very simplified form and utilize non-precise ratios, and are intended to facilitate a convenient, clear, description of the embodiments of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1, a system architecture diagram of the present application is shown, and fig. 2 shows a signaling schematic diagram of the control system of the present application.
The technical scheme of the embodiment is as follows: a waste incinerator control system, the waste incinerator comprising a main burner, a secondary combustion chamber, characterized by comprising: the process safety control system is in signal connection with a plurality of cut-off valves and a plurality of regulating valves of the waste liquid incinerator and is used for controlling the process operation of the waste liquid incinerator and monitoring the safety operation of the waste liquid incinerator; and the DCS control system is in signal connection with the process safety control system and is used for carrying out opening adjustment control on a plurality of non-safety operated regulating valves in the safety operation process of the waste liquid incinerator.
In the technical scheme of the application, the process safety control system is in signal connection with a plurality of cut-off valves and regulating valves of the incinerator, and the state and/or opening degree of each cut-off valve and regulating valve can be controlled through the actuator, so that the operations of purging, starting and stopping can be realized, meanwhile, the safety operation detection is also carried out in real time based on the process stage of the incinerator, and the safety stopping logic is executed whenever an abnormal condition occurs, so that the safety operation of the system can be ensured. Compared with the prior art, the technical scheme of the application has the advantages of higher system automation and intelligent degree and higher safety. On the premise of ensuring safe production, the usability and the intellectualization of the system are greatly improved.
The unsafe operating control valves include control valves that an operator adjusts, such as temperature, pressure, flow, according to operating conditions during production runs, which do not involve operation of the SIS control system. The DCS control system also records system logs, alarms and the like in operation.
Preferably, the process safety control system comprises a BMS control system and an SIS control system, wherein the BMS control system automatically performs purging, driving and stopping sequence control according to a preset program, and the SIS control system monitors and controls a plurality of cut-off valves of the waste liquid incinerator according to preset parameters and/or interlocking conditions based on the process stage of the incinerator so as to realize overall process safety monitoring of the system.
In BMS program architecture, the BMS control system and the SIS control system are intelligently fused, the driving sequence and the current step can be intelligently guided, intelligent display, judgment and early warning are carried out on the conditions in the execution process of each step, the convenience and safety of operation are improved, the safety of the system, production and personnel are guaranteed, the process alarm is reasonably optimized, and the operation process of an operator is simplified.
Preferably, the process safety control system monitors the environmental parameters in the incinerator through temperature, pressure, flow and liquid level sensors, compares the acquired sensor parameters with corresponding thresholds, and immediately executes relevant safety interlocking actions and pops up interlocking alarm information when the interlocking is triggered.
Based on preset interlocking logic, when the interlocking is triggered, the relevant interlocking action is executed, corresponding interlocking alarm information is popped up, and the operator is timely reminded and the combustion process is ensured to be in a safe state. The safety interlock priority is set to be the highest to ensure the safe operation of the system.
Preferably, when the interlock is triggered, the sequential control logic of the current process stage is automatically shut down, a safety shutdown logic is executed, and system initialization is performed to effect safety monitoring of the combustion process.
The embodiment carries out unified and integrated management on instrument IO data, operation parameters and monitoring data, realizes intelligent process flow control, automatically completes sequential control of purging, driving, stopping and the like, and monitors parameters of each flow in the whole flow. The key alarm information of the system is prompted in steps, redundancy of irrelevant alarm information is avoided, and the effectiveness and usability of the whole system information are improved. The system has high flexibility, can modify the process flow and the execution time in a complex waste liquid incineration system, reduces the time cost and the fuel input cost, and improves the economic benefit.
Preferably, the process safety control system further comprises an HMI interface, wherein the HMI interface displays the process stage of the incinerator in real time and displays a corresponding abnormality prompt when the incinerator is abnormal.
Preferably, the DCS control system is capable of receiving a user's modification of a preset regulating valve parameter and issuing the modified parameter to a target regulating valve through the process safety control system.
The HMI interface tracks the process progress in real time, the visualization degree is high, the sensor and the actuator are automatically detected when the system is started, various conditions and parameters are detected, an operator only needs to adjust very few parameters such as the purging time, the purging air quantity and the like at the HMI interface according to the current working condition of the burner of the furnace body, the system can finish the starting ignition work of the burner and the display of the process stage where the burner is positioned, the control path is clear, and the operation and the control are convenient. And a safety parameter input interface is opened for a process operator, and the engineering station is not required to modify the logic of the bottom layer of the controller, so that the process operator can independently complete parameter adjustment. The working efficiency is improved, the early project cost is reduced, the system reliability is improved, and the operation and maintenance modes are optimized. The safety is improved, and meanwhile, the debugging, parameter calibration, experiment and adjustment are convenient.
Preferably, AI signals of the plurality of regulating valve opening degrees are input to an AI terminal board of the SIS control system through hard wires so as to improve the safety level of the SIL loop and monitor valve opening degree parameters in the whole process of the SIS control system.
Referring to fig. 1 and 2, in order to satisfy the SIL 3-level authenticated controller, field meter data is collected point-to-point. In a BMS program architecture, an SIS system is arranged on sequential control, so that the process alarm is reasonably optimized on the premise of guaranteeing the safety of the system, production and personnel, and the operation process of an operator is simplified; BMS and SIS systems are intelligently fused.
Referring to FIG. 2, a signaling schematic is shown, where the control system pre-configures key parameters at the DCS control system. When the starting step reaches the step of opening the regulating valve, transmitting a valve opening instruction to a DCS control system through a DO signal, and controlling the opening of the valve by the DCS control system. And compared with signals transmitted from the SIS control system. And when the opening degree of the return signal is in the normal precision range, sending an opening degree correct signal back to the BMS control system to finish closed loop transmission of the information. When parameters need to be adjusted, the parameters are only changed in the operation picture of the DCS control system in real time.
The BMS will continue to complete the given process steps after receiving the "correct opening signal". In order to avoid the risk of communication failure, and set failure detection for MODBUS-RTU communication signals, when a 'valve opening correct signal' is not received for a certain time, resetting the burner to control to an initial state, executing a set stopping step, sequentially closing a natural gas feeding valve and the like, and ensuring the production safety of the waste liquid incinerator.
Based on the same conception, the embodiment also provides a control method of the waste liquid incinerator, comprising the following steps:
initializing a BMS control system in a process safety control system, and performing self-checking on all sensors and valve actuators in the BMS control system;
the method comprises the steps of obtaining purging parameters input by a preset interface, and purging the incinerator based on the purging parameters;
detecting whether the BMS control system meets driving conditions or not, and performing driving operation based on a preset ignition valve given value under the condition that the driving conditions are met;
after the driving is successful, releasing the control authority of a preset regulating valve to a DCS control system;
the SIS control system in the process safety control system monitors and controls a plurality of cut-off valves of the waste liquid incinerator according to preset parameters and/or interlocking conditions based on the process stage of the system so as to realize the whole process safety monitoring of the system.
According to the method, the SIS control system and the BMS system are fused together, so that the system can automatically drive, stop and detect safety based on preset control logic at any process stage, and the integration level, the intellectualization and the safety of the system are just high.
Specifically, referring to fig. 3, a flow chart of an ignition control method of the waste liquid incinerator is shown.
Preferably, in one embodiment, the critical path sequence control diagram may clearly display the steps of complete driving, stopping, purging, etc.:
when the system is started, self-checking is carried out, so that all sensors and actuators work normally, an intelligent flow is followed, a step sequence is displayed in a timing mode, and a key information state is prompted.
After the initialization of the master BMS, the operator sets the purge time;
executing a total purging program of the system;
detecting a master BMS operation license;
the master BMS operates and detects operation permission conditions at any time, and automatically executes parking when the conditions are not met;
when the main BMS operates, the ignition program of the main burner and the two-chamber burner A/B can be executed by one key;
when the main burner and the two-chamber burner A/B are initialized, the purging procedures of each combustion chamber can be independently executed;
after the independent combustion chamber finishes purging, an operator presets a given value of an ignition valve in the HMI, and the BMS automatically executes an ignition program;
after ignition is successful, the system automatically detects the operation permission (operation necessary condition) of each combustion chamber in the whole life cycle;
when each combustion chamber license is not satisfied, a stopping procedure is automatically performed.
Preferably, in one embodiment, the permission or jump condition of each step is tracked and displayed in real time for the execution of the sub-program. And the time such as purging, feeding, pressure release can be flexibly adjusted, so that the condition that the burner is stopped due to abnormal working conditions and does not need to be purged again or the working condition of purging in a whole process is avoided, and at the moment, real-time adjustment can be carried out through an HMI (human machine interface) writing value window, thereby greatly saving the capital cost and the time cost.
Preferably, the method further comprises: the process safety control system monitors the environmental parameters in the incinerator through temperature, pressure, flow and liquid level sensors, compares the acquired sensor parameters with corresponding threshold values, immediately executes relevant safety interlocking actions when the interlocking is triggered, and pops up interlocking alarm information; and simultaneously, automatically cutting off the sequential control logic of the current process stage, executing the safety stopping logic and initializing the system so as to realize the safety monitoring of the combustion process.
Safety detection is realized through preset interlocking logic, and the safety of the system is higher. Determining a waste liquid incinerator protection layer according to the LOPA analysis, analyzing the design, operation and maintenance of the system through the HAZOP analysis, identifying possible dangers and operation problems, determining SIL loop grade and priority, writing interlocking logic according to the qualitative and quantitative analysis, and drawing an ESD interlocking matrix diagram. The BMS system in the application is not limited by the dead-plate interlocking condition, but dynamically judges the combustion process and the working procedure, and establishes an intelligent SIL loop by utilizing the reliable interlocking condition, for example, the 'main burner feed valve cut-off interlocking' takes effect automatically only when the main burner operates, and the 'flame detection' interlocking condition is put into use.
1) Because the flame detection is always OFF if the interlock is not cut OFF before the start of the vehicle, the cut-OFF valve is in a closed state, and the start sequence control cannot be executed;
2) In order to solve the problem, the traditional scheme is to set an operation bypass, manually intervene and cut before driving, and manually commission after driving sequence control is finished;
according to the application, the process state is matched, so that the on/off state of the interlocking condition is automatically judged; the switching of the operation bypass can be omitted by manual operation, so that the misoperation of personnel is avoided, and meanwhile, the forgetting operation of personnel after successful ignition is avoided. On the premise of ensuring safe production, the usability and the intellectualization of the system are greatly improved.
Preferably, when the parameter of the preset cut-off valve detected by the SIS control system exceeds a preset threshold, the system is initialized based on preset safe parking logic in the BMS control system.
The SIS control system has the highest control priority, and the safety of the system is guaranteed preferentially. The method has the characteristics of quick response, intelligent operation, high automation, safety, reliability and the like, and can effectively improve the safety and efficiency of the incinerator.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a read only memory (ReadOnlyMemory, ROM), a magnetic or optical disk, or other various media capable of storing program code.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the above embodiments. Even if various changes are made to the present application, it is within the scope of the appended claims and their equivalents to fall within the scope of the application.
Claims (10)
1. A waste incinerator control system, the waste incinerator comprising a main burner, a secondary combustion chamber, characterized by comprising:
the process safety control system is in signal connection with a plurality of cut-off valves and a plurality of regulating valves of the waste liquid incinerator and is used for controlling the process operation of the waste liquid incinerator and monitoring the safety operation of the waste liquid incinerator;
and the DCS control system is in signal connection with the process safety control system and is used for carrying out opening adjustment control on a plurality of non-safety operated regulating valves in the safety operation process of the waste liquid incinerator.
2. The waste incinerator control system according to claim 1, wherein the process safety control system comprises a BMS control system and an SIS control system, the BMS control system automatically performs purging, driving and stopping sequence control according to a preset program, and the SIS control system monitors and controls a plurality of cut-off valves of the waste incinerator according to preset parameters and/or interlocking conditions based on the process stage of the incinerator so as to realize overall process safety monitoring of the system.
3. The waste incinerator control system according to claim 2, wherein the process safety control system monitors the incinerator internal environment parameters through temperature, pressure, flow and liquid level sensors, compares the collected sensor parameters with corresponding thresholds, and immediately executes relevant safety interlocking actions and ejects interlocking alarm information when the interlocking is triggered.
4. A waste incinerator control system according to claim 3, wherein when the interlock is triggered, the sequential control logic of the current process stage is automatically shut down, safety shutdown logic is executed and system initialisation is performed to effect safety monitoring of the combustion process.
5. The waste incinerator control system of claim 1, further comprising an HMI interface displaying in real time the process stage in which the incinerator is located and displaying a corresponding anomaly prompt when anomalies occur.
6. The waste incinerator control system of claim 1, wherein the DCS control system is capable of receiving user modifications to preset regulator valve parameters and issuing the modified parameters to the target regulator valve via the process safety control system.
7. The waste incinerator control system according to claim 2, wherein AI signals of the plurality of regulating valve opening are input to an AI terminal board of the SIS control system through hard wiring to raise the safety level of the SIL loop, and the SIS control system monitors valve opening parameters in the whole process.
8. A control method of a waste liquid incinerator, characterized by comprising the steps of:
initializing a BMS control system in a process safety control system, and performing self-checking on all sensors and valve actuators in the BMS control system;
the method comprises the steps of obtaining purging parameters input by a preset interface, and purging the incinerator based on the purging parameters;
detecting whether the BMS control system meets driving conditions or not, and performing driving operation based on a preset ignition valve given value under the condition that the driving conditions are met;
after the driving is successful, releasing the control authority of a preset regulating valve to a DCS control system;
the SIS control system in the process safety control system monitors and controls a plurality of cut-off valves of the waste liquid incinerator according to preset parameters and/or interlocking conditions based on the process stage of the system so as to realize the whole process safety monitoring of the system.
9. The method for controlling a waste liquid incinerator according to claim 8, further comprising: the process safety control system monitors the environmental parameters in the incinerator through temperature, pressure, flow and liquid level sensors, compares the acquired sensor parameters with corresponding threshold values, immediately executes relevant safety interlocking actions when the interlocking is triggered, and pops up interlocking alarm information; and simultaneously, automatically cutting off the sequential control logic of the current process stage, executing the safety stopping logic and initializing the system so as to realize the safety monitoring of the combustion process.
10. The method of controlling a waste liquid incinerator according to claim 8, further comprising performing system initialization based on a safety shutdown logic preset in a BMS control system when a parameter of a preset cutoff valve detected by the SIS control system exceeds a preset threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310792582.0A CN116878001A (en) | 2023-06-30 | 2023-06-30 | Control system and control method for waste liquid incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310792582.0A CN116878001A (en) | 2023-06-30 | 2023-06-30 | Control system and control method for waste liquid incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116878001A true CN116878001A (en) | 2023-10-13 |
Family
ID=88263640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310792582.0A Pending CN116878001A (en) | 2023-06-30 | 2023-06-30 | Control system and control method for waste liquid incinerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116878001A (en) |
-
2023
- 2023-06-30 CN CN202310792582.0A patent/CN116878001A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9811081B2 (en) | Emergency test control panel device, system and method | |
| US7504961B2 (en) | Emergency isolation valve controller with integral fault indicator | |
| CA2306141C (en) | Method and device for verifying the workability of a safety device | |
| RU2395830C2 (en) | Process device with supervisory overlayer | |
| US8072343B2 (en) | Local emergency isolation valve controller with diagnostic testing and trouble indicator | |
| US7130703B2 (en) | Voter logic block including operational and maintenance overrides in a process control system | |
| US8720267B2 (en) | Partial stroke testing system coupled with fuel control valve | |
| CN203324809U (en) | Diagnostic apparatus for control system | |
| CN102618331B (en) | Safety interlocking protection system used for powdered coal pressure gasification process and method | |
| JP2001296383A (en) | Process protection system | |
| KR101942398B1 (en) | Redundant gas supply control apparatus | |
| DE60309458T2 (en) | METHOD FOR CONTROLLING A PROCESS | |
| CN113882947A (en) | Instrument display method capable of identifying different faults and responding | |
| CN102207292B (en) | Combustion controlling device | |
| CN116878001A (en) | Control system and control method for waste liquid incinerator | |
| CN105551535B (en) | Nuclear power plant containment shell disappears hydrogen system | |
| JP2004310767A (en) | Operation adjustment of field device in process control/ security system utilizing override and bypass | |
| Lew et al. | Computerized operator support system for nuclear power plant hybrid main control room | |
| CN114049977A (en) | Remote control method and device of ventilation system for critical device | |
| CN113741167A (en) | Diversified driving system of nuclear power station | |
| CN117518962A (en) | Safety alarm and emergency disposal control system for hydrogen internal combustion engine laboratory | |
| CN116754725A (en) | Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system | |
| CN116104982A (en) | Forced periodic discharge test system and method for pressure-bearing boiler safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |