CN115218639A - Method for intelligently producing tablet vanadium based on expert control system - Google Patents
Method for intelligently producing tablet vanadium based on expert control system Download PDFInfo
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- CN115218639A CN115218639A CN202210645343.8A CN202210645343A CN115218639A CN 115218639 A CN115218639 A CN 115218639A CN 202210645343 A CN202210645343 A CN 202210645343A CN 115218639 A CN115218639 A CN 115218639A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
- C01G31/02—Oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
- F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0087—Automatisation of the whole plant or activity
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- Inorganic Chemistry (AREA)
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Abstract
The invention provides a method for intelligently producing vanadium tablets based on an expert control system, and belongs to the technical field of vanadium production. According to the method for producing the tablet vanadium, the S1 raw material ammonium polyvanadate is discharged into a flash evaporation dryer for drying, and a feeding quantity closed-loop control system is arranged to realize stable feeding quantity of the flash evaporation system; s2, discharging the dried ammonium polyvanadate into a calcining furnace to calcine, decompose and deaminate to form powdery materials, and installing a plurality of negative pressure detection transmitters; s3, adding the material into a melting furnace for melting, cooling and crystallizing to obtain a flaky vanadium pentoxide product, and installing a plurality of negative pressure detection transmitters; the negative pressure detection transmitter detects the negative pressure of each process in real time, and the temperature transmitter is arranged in the hearth of the melting furnace to detect the temperature of the hearth of the melting furnace in real time; based on the fuzzy control theory, an expert control system is built by utilizing the collected signals. The method for producing the tablet vanadium provided by the invention realizes stable negative pressure of the system, stable vanadium liquid flow and energy-saving and efficient combustion of coal gas in the vanadium production process.
Description
Technical Field
The invention belongs to the technical field of vanadium production, and particularly relates to a method for intelligently producing vanadium tablets based on an expert control system.
Background
Vanadium is a rare metal, wherein tablet vanadium pentoxide is a main vanadium raw material occupying a vanadium market, a three-step process is usually adopted for producing the tablet vanadium pentoxide, the three-step process sequentially adopts disc type drying machine drying, rotary kiln calcining and reverberatory furnace melting, in the process of producing the metal vanadium, the defects of high equipment failure rate, high energy consumption, low yield and the like exist in multiple aspects of recovery rate, environment protection, quality and the like of the metal vanadium, and in order to meet the enterprise development requirements of production line index improvement, production increase and consumption reduction, product high-end, green and environment protection and the like, in the production process of the metal vanadium, how to maintain stable negative pressure of a system and stable vanadium liquid flow and realize energy-saving and efficient combustion of coal gas are the problems to be solved urgently.
Disclosure of Invention
The invention aims to provide a method for intelligently producing tablet vanadium based on an expert control system, and aims to solve the problems of high equipment failure rate, high energy consumption, low yield and the like in the production process of metal vanadium.
In order to realize the purpose, the invention adopts the technical scheme that: the method for intelligently producing the vanadium tablets based on the expert control system comprises the following steps:
s1, discharging raw material ammonium polyvanadate in a raw material bin into a disc feeder, conveying the raw material ammonium polyvanadate into a flash evaporation dryer through an electronic belt scale, discharging the ammonium polyvanadate into a flash evaporation cloth bag collector along with high-temperature flue gas to obtain dried ammonium polyvanadate, forming a feeding quantity closed-loop control system by the disc feeder and the electronic belt scale, collecting a weight signal of the raw material ammonium polyvanadate of the electronic belt scale, obtaining the weight of the raw material ammonium polyvanadate added into the flash evaporation dryer per minute, and adjusting the rotating speed of a frequency converter of the disc feeder according to the weight of the raw material ammonium polyvanadate to realize stable feeding quantity of the flash evaporation system;
s2, discharging dried ammonium polyvanadate into a calcining furnace from a flash evaporation bag collector, calcining, decomposing and deaminating the dried ammonium polyvanadate in the calcining furnace to form powdery materials, discharging the powdery materials into a calcining bag dust collector, respectively installing negative pressure detection transmitters at an inlet of the calcining furnace and at an inlet and an outlet of the flash evaporation bag dust collector, detecting the negative pressure of each process in real time, and providing feedback parameters for constant control of the negative pressure of a hearth of a melting furnace;
s3, adding the powdery material in the calcining bag-type dust collector into a melting furnace through a metering screw conveyor, burning mixed gas, heating the melting furnace, melting the powdery material, cooling, crystallizing and crushing a molten vanadium pentoxide liquid through a rotary sheet casting machine (a granulating table), producing a sheet vanadium pentoxide product, respectively installing negative pressure detection transmitters at a hearth of the melting furnace, an inlet of a flash dryer, an inlet and an outlet of a drying bag-type dust collector, detecting the negative pressure of each process in real time, providing feedback parameters for constant control of the negative pressure of the hearth of the melting furnace, installing a temperature transmitter in the hearth of the melting furnace, and detecting the temperature of the hearth of the melting furnace in real time;
and S4, based on a fuzzy control theory, utilizing the collected weight signal of the raw material ammonium polyvanadate, the negative pressure signal of the negative pressure detection transmitter and the temperature signal of the temperature transmitter to construct an expert control system, judging the water containing condition of the material, the fluctuation condition of the gas heat value and the like by the expert control system through the collected various instrument signals, further automatically adjusting the set parameters of the control system, and realizing the process safety interlocking, alarming and automatic stopping of the whole system.
In a possible implementation mode, a calcining induced draft fan is communicated with the calcining bag-type dust remover and used for discharging waste gas generated by calcining, and a negative pressure detection transmitter is mounted at an inlet of the calcining induced draft fan.
In a possible implementation mode, the speed of the calcining induced draft fan is controlled by adopting PID (proportion integration differentiation) speed regulation, the set value of the PID is the expected negative pressure of the melting furnace, and the feedback value is the actual negative pressure value of the melting furnace.
In a possible implementation mode, the calcining induced draft fan is communicated with the ammonia nitrogen wastewater treatment device.
In a possible implementation mode, a drying induced draft fan is communicated with the flash evaporation bag-type dust collector and used for discharging waste gas generated by drying, and a negative pressure detection transmitter is installed at an inlet of the drying induced draft fan.
In one possible implementation mode, the speed control of the drying induced draft fan adopts PID speed regulation, the PID set value is the expected negative pressure of the melting furnace, and the feedback value is the actual negative pressure value of the melting furnace.
In a possible implementation mode, the drying induced draft fan is communicated with the ammonia nitrogen wastewater treatment device.
In a possible implementation mode, a gas regulating valve is arranged on the melting furnace, the opening degree of the gas regulating valve is controlled by PID, the PID set value is the expected temperature of the melting furnace, and the feedback value is the actual temperature of the melting furnace.
In a possible implementation mode, a DCS (distributed control system) is used, and adjusting control (the opening of an adjusting valve and the output rotating speed of a frequency converter) is performed on an execution element by acquiring feedback parameters of a site basic automation system and combining an expert database control strategy, so that the negative pressure stability of materials, the stability of vanadium liquid flow and the energy-saving combustion of coal gas are realized.
The method for intelligently producing the vanadium tablets based on the expert control system has the beneficial effects that:
compared with the prior art, in the production process of the flaky vanadium pentoxide, the raw material ammonium polyvanadate is conveyed into a flash dryer from a raw material bin through a disc feeder and an electronic belt scale, the flash dryer is heated to accelerate the drying of the raw material ammonium polyvanadate, the dried ammonium polyvanadate is discharged into a flash evaporation cloth bag collector along with high-temperature flue gas to obtain dried ammonium polyvanadate, then the dried ammonium polyvanadate is discharged into a calcining furnace to heat the calcining furnace, the ammonium polyvanadate is calcined, decomposed and deaminated in the calcining furnace to form powdery materials, the powdery materials are discharged into a calcining cloth bag dust remover, the powdery materials obtained after the calcining are added into a melting furnace, mixed gas is combusted, the powdery materials are melted to obtain molten vanadium pentoxide liquid, and the flaky vanadium pentoxide product is obtained through cooling, crystallization and compression roller crushing by a rotary casting machine (granulation table); in the production process, in the feeding and drying process, the disc feeder and the electronic belt scale form a feeding amount closed-loop control system, the weight of raw material ammonium polyvanadate entering a flash dryer is obtained by obtaining a weight signal of the raw material ammonium polyvanadate of the electronic belt scale, the rotating speed of a frequency converter of the disc feeder is fed back and adjusted to realize the stability of the feeding amount of the flash system, in the calcining process, negative pressure detection transmitters are respectively installed at an inlet of a calcining furnace, an inlet and an outlet of a flash bag dust collector, the negative pressure condition of each process is detected in real time by using the negative pressure detection transmitters, feedback parameters are provided for the constant negative pressure control of a hearth of a melting furnace, in the melting process, negative pressure detection transmitters are respectively installed at the inlet of the melting furnace, the inlet of the flash dryer, the inlet and the outlet of the drying bag dust collector, a temperature transmitter is installed in the hearth of the melting furnace, the temperature of the melting furnace is detected in real time, the temperature of the melting furnace is detected, based on fuzzy control theory and various signals acquired, an expert control system is built, the expert control system judges the water-containing condition of the water content of the material, coal gas, adjusts the fluctuation of the coal gas, and controls the stable flow of the coal gas flow, and further realizes the stable control of the stable coal gas flow, and the stable energy-saving.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a process flow chart for producing tablet vanadium pentoxide provided by the embodiment of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a specific embodiment of the method for intelligently producing tablet vanadium based on an expert control system according to the present invention is described, which includes the following steps:
s1, discharging raw material ammonium polyvanadate in a raw material bin into a disc feeder, conveying the raw material ammonium polyvanadate into a flash evaporation dryer through an electronic belt scale, generating high-temperature flue gas in a melting furnace, heating the flash evaporation dryer, drying the ammonium polyvanadate, discharging the dried ammonium polyvanadate into a flash evaporation cloth bag collector along with the high-temperature flue gas from an outlet at the top of the flash evaporation dryer to obtain the dried ammonium polyvanadate, communicating a drying induced draft fan on a flash evaporation cloth bag dust collector, and discharging waste gas generated by drying, wherein the drying induced draft fan is simultaneously communicated with an ammonia nitrogen wastewater treatment device and is used for treating waste gas and waste liquid generated in a production process;
s2, discharging dried ammonium polyvanadate into a calciner from a flash evaporation bag collector, burning mixed gas in a hot air furnace, heating the calciner by generated hot air, calcining, decomposing and deaminating the dried ammonium polyvanadate in the calciner to form a powdery material, discharging the powdery material into a calcination bag dust collector, communicating a calcination induced draft fan on the calcination bag dust collector for discharging waste gas generated by calcination, communicating an ammonia nitrogen wastewater treatment device with the calcination induced draft fan for treating waste gas waste liquid generated in a production process, respectively mounting negative pressure detection transmitters at an inlet, an inlet and an outlet of the flash evaporation bag dust collector and an inlet of the calcination induced draft fan, detecting negative pressure of each process in real time, and providing feedback parameters for constant control of negative pressure of a hearth of a melting furnace, wherein the speed of the calcination induced draft fan is regulated by PID (proportion integration differentiation), the PID (proportion integration differentiation) setting value is the expected negative pressure of the melting furnace, and the feedback value is the actual negative pressure value of the melting furnace;
s3, adding the powdery material in the calcining bag-type dust remover into a melting furnace through a metering screw conveyor, burning mixed gas, heating the melting furnace, melting the powdery material, cooling, crystallizing and crushing the molten vanadium pentoxide liquid through a rotary sheet casting machine (a granulating table), and producing a sheet vanadium pentoxide product, wherein a gas regulating valve is arranged on the melting furnace, the opening degree of the gas regulating valve is controlled by adopting PID (proportion integration differentiation), the PID set value is the expected temperature of the melting furnace, the feedback value is the actual temperature of the melting furnace, negative pressure detection transmitters are respectively arranged at a hearth of the melting furnace, an inlet of a flash evaporation dryer, an inlet and an outlet of a drying bag-type dust remover, the negative pressure of each process is detected in real time, a feedback parameter is provided for the constant control of the negative pressure of the hearth of the melting furnace, a temperature transmitter is arranged in the hearth of the melting furnace, and the temperature of the hearth of the melting furnace is detected in real time;
s4, based on a fuzzy control theory (the concept is proposed in 1974, and the core is to establish a language analysis mathematical mode for a complex system or process, so that natural language can be directly converted into algorithm language acceptable to a computer), by using a collected weight signal of raw material ammonium polyvanadate, a negative pressure signal of a negative pressure detection transmitter and a temperature signal of a temperature transmitter, using a DCS (distributed control system, namely DCS, adopting a basic design idea of control dispersion, operation and management concentration, and adopting a structural form of multilayer classification and cooperative autonomy, and the main characteristic is that the DCS is subjected to centralized management and distributed control, and the DCS is widely applied in various industries such as power, metallurgy and petrifaction industries and the like, and by collecting feedback parameters of a field basic automation system and combining with an expert database control strategy, a control system is built, and the expert control system judges the water content of a material, the fluctuation condition of a gas heat value and the like through collected various instrument signals, and carries out regulation control (regulating valve opening, output rotating speed of a frequency converter) on an executive element, so as to further realize material negative pressure stabilization, vanadium liquid flow stabilization, gas energy-saving combustion, safety interlocking of a whole process system, automatic shutdown and the like.
The invention provides a method for intelligently producing tablet vanadium based on an expert control system, which comprises the steps of conveying ammonium polyvanadate from a raw material bin into a flash dryer through a disk feeder and an electronic belt scale in the production process of the tablet vanadium pentoxide, heating the flash dryer by using high-temperature smoke generated by a melting furnace, accelerating the drying of the ammonium polyvanadate, discharging the dried ammonium polyvanadate into a flash cloth bag collector along with the high-temperature smoke to obtain dried ammonium polyvanadate, then discharging into a calcining furnace, heating the ammonium polyvanadate by burning mixed gas in a hot air furnace, calcining, decomposing and deaminating the ammonium polyvanadate in the calcining furnace to form a powdery material, discharging the powdery material into a calcining cloth bag dust remover, adding the powdery material obtained by calcining into a melting furnace, burning the mixed gas to melt the powdery material to obtain a molten vanadium pentoxide liquid, and cooling, crystallizing and pressing the molten vanadium pentoxide by a rotary tablet casting machine (a crushing table) to obtain a tablet vanadium pentoxide product; in the production process, in the feeding and drying process, the disc feeder and the electronic belt scale form a feeding amount closed-loop control system, the weight of raw material ammonium polyvanadate entering a flash dryer is obtained by obtaining a weight signal of the raw material ammonium polyvanadate of the electronic belt scale, the rotating speed of a frequency converter of the disc feeder is fed back and adjusted to realize the stability of the feeding amount of the flash system, in the calcining process, negative pressure detection transmitters are respectively installed at an inlet of a calcining furnace, an inlet and an outlet of a flash bag dust collector, the negative pressure condition of each process is detected in real time by using the negative pressure detection transmitters, feedback parameters are provided for the constant negative pressure control of a hearth of a melting furnace, in the melting process, negative pressure detection transmitters are respectively installed at the inlet of the melting furnace, the inlet of the flash dryer, the inlet and the outlet of the drying bag dust collector, a temperature transmitter is installed in the hearth of the melting furnace, the temperature of the melting furnace is detected in real time, the temperature of the melting furnace is detected, based on fuzzy control theory and various signals acquired, an expert control system is built, the expert control system judges the water-containing condition of the water content of the material, coal gas, adjusts the fluctuation of the coal gas, and controls the stable flow of the coal gas flow, and further realizes the stable control of the stable coal gas flow, and the stable energy-saving.
As a specific embodiment of the method for intelligently producing the vanadium tablet based on the expert control system provided by the invention, please refer to fig. 1, the process flow for producing the vanadium pentoxide tablet specifically comprises the following steps:
the method comprises the steps of firstly, drying, namely discharging raw material ammonium polyvanadate (generally containing less than or equal to 30% of water) in a raw material bin into a disc feeder, conveying the raw material ammonium polyvanadate into a feeding bin through an electronic belt scale, discharging the raw material ammonium polyvanadate into a flash evaporation dryer through the feeding bin, controlling the temperature of the flash evaporation dryer within 300-450 ℃ by using high-temperature flue gas at 350-450 ℃ generated by a melting furnace as a heat source, drying the raw material ammonium polyvanadate until the water content is less than 1%, carrying the dried material from an outlet at the top of a main machine of the flash evaporation dryer to a flash evaporation cloth bag collector by the flue gas, collecting the dried ammonium polyvanadate, communicating a drying induced draft fan on the flash evaporation cloth bag collector for discharging waste gas generated by drying, and communicating the drying induced draft fan with an ammonia nitrogen waste water treatment device for treating waste gas and waste liquid generated in the production process;
and secondly, calcining and decomposing, discharging dried ammonium polyvanadate into a calcining furnace through an intermediate bin I and a metering screw conveyor, heating the calcining furnace (a main furnace and an auxiliary furnace) by using hot air (550-650 ℃) generated by heating mixed gas in a hot air furnace as a heat source, calcining, decomposing and deaminating the dried ammonium polyvanadate into powder materials in the calcining furnace at 550-650 ℃, collecting flue gas below 200 ℃ through a calcining bag dust collector after the high-temperature flue gas passes through an outlet of the auxiliary furnace of the calcining furnace and exchanges heat through a double-pipe cyclone dust collector and a heat exchanger, communicating a calcining induced draft fan on the calcining bag dust collector for discharging waste gas generated by calcining, communicating the calcining induced draft fan with an ammonia nitrogen wastewater treatment device for treating waste gas and liquid generated in the production process, and using the hot air (200-300 ℃) obtained by heat exchange of the heat exchanger as a melting furnace and a hot air furnace for supplementing hot air.
And thirdly, melting, namely adding the powdery material into a melting furnace through a calcining cloth bag dust collector, an intermediate bin II and a metering screw conveyor, heating by using mixed gas, melting the powdery material at 700-850 ℃, cooling, crystallizing and crushing the molten vanadium pentoxide liquid by using a rotary flaker (a granulating table), and producing a flaky vanadium pentoxide (a flaky vanadium pentoxide) product.
The specific embodiment of the method for intelligently producing the tablet vanadium based on the expert control system provided by the invention is exemplified by the control operation in the actual production process.
The temperature control modes of the disc feeder, the drying induced draft fan, the calcining induced draft fan and the melting furnace in the production process are all selected to be an 'automatic' control mode, the speed of a variable frequency motor of the disc feeder is set to be 10HZ, and the minute feeding amount displayed by the electronic belt scale is 20 kg; setting the negative pressure of an inlet of the drying induced draft fan to be-1600 PA, and setting the speed of a frequency converter of the induced draft fan to be about 35 HZ; setting the negative pressure of an inlet of a calcining induced draft fan to be-1500 PA, and setting the speed of a frequency converter of the induced draft fan to be about 35 HZ; the furnace temperature of the melting furnace is set to 820 ℃, the opening of the gas regulating valve is about 40%, the whole system stably operates, and the vanadium liquid flow of the melting furnace is stable.
Supposing that the heat value of the gas is reduced, in order to ensure that the temperature of the melting furnace reaches 820 ℃, a PID control system of a gas regulating valve of the melting furnace acts, the opening degree of the gas regulating valve is increased by 80 percent from 40 percent, but after 30 minutes, the temperature of the melting furnace is continuously reduced, at the moment, an expert system judges that the heat value of the gas is low, the expert system immediately pops up warning information on a picture, namely the heat value of the gas is reduced, the flash evaporation feeding amount is reduced, a post worker manually reduces the speed of a flash evaporation disc feeder according to prompt information, the speed is reduced from 7HZ to 5HZ, the feeding amount of a flash evaporation dryer is also immediately reduced, after 30 minutes, the temperature of the melting furnace is increased to a furnace temperature set temperature value (820 ℃), the whole system reaches a new balance, and the vanadium liquid flow of the melting furnace is stable.
Supposing that in the normal production process, the frequency of the drying induced draft fan reaches 45HZ, but the hearth of the melting furnace is still in positive pressure, at the moment, the expert system judges that the drying flue gas pipeline is blocked, and a picture pops up for alarm to indicate post personnel to clean the melting furnace pipeline.
Supposing that the pressure behind the gas main valve is lower than 3.5KPA, the expert system warns that the gas pressure is low, and pops up an alarm on a picture; the pressure behind the main valve of the gas is lower than 3KPA, the expert system warns that the gas pressure is extremely low, automatically cuts off the gas valve, simultaneously pops up the alarm on the picture, and the calcining induced draft fan and the drying induced draft fan automatically run at high speed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for intelligently producing vanadium tablets based on an expert control system is characterized by comprising the following steps:
s1, discharging a raw material ammonium polyvanadate in a raw material bin into a disc feeder, conveying the ammonium polyvanadate into a flash dryer through an electronic belt scale, discharging the ammonium polyvanadate into a flash cloth bag collector along with high-temperature flue gas to obtain dried ammonium polyvanadate, forming a feeding amount closed-loop control system by the disc feeder and the electronic belt scale, collecting a weight signal of the raw material ammonium polyvanadate of the electronic belt scale, acquiring the weight of the raw material ammonium polyvanadate added into the flash dryer per minute, adjusting the rotating speed of a frequency converter of the disc feeder according to the weight of the raw material ammonium polyvanadate, and realizing stable feeding amount of the flash dryer;
s2, discharging dried ammonium polyvanadate into a calcining furnace from a flash evaporation bag collector, calcining, decomposing and deaminating the dried ammonium polyvanadate in the calcining furnace to form powdery materials, discharging the powdery materials into a calcining bag dust collector, respectively installing negative pressure detection transmitters at an inlet of the calcining furnace and at an inlet and an outlet of the flash evaporation bag dust collector, detecting the negative pressure of each process in real time, and providing feedback parameters for constant control of the negative pressure of a hearth of a melting furnace;
s3, adding the powdery material in the calcining bag-type dust collector into a melting furnace through a metering screw conveyor, burning mixed gas, heating the melting furnace, melting the powdery material, cooling, crystallizing and crushing a molten vanadium pentoxide liquid through a rotary sheet casting machine (a granulating table), producing a sheet vanadium pentoxide product, respectively installing negative pressure detection transmitters at a hearth of the melting furnace, an inlet of a flash dryer, an inlet and an outlet of a drying bag-type dust collector, detecting the negative pressure of each process in real time, providing feedback parameters for constant control of the negative pressure of the hearth of the melting furnace, installing a temperature transmitter in the hearth of the melting furnace, and detecting the temperature of the hearth of the melting furnace in real time;
and S4, based on a fuzzy control theory, utilizing the collected weight signal of the raw material ammonium polyvanadate, the negative pressure signal of the negative pressure detection transmitter and the temperature signal of the temperature transmitter to construct an expert control system, judging the water containing condition of the material, the fluctuation condition of the gas heat value and the like by the expert control system through the collected various instrument signals, further automatically adjusting the set parameters of the control system, and realizing the process safety interlocking, alarming and automatic stopping of the whole system.
2. The method for intelligently producing the vanadium tablets based on the expert control system as claimed in claim 1, wherein a calcining bag-type dust remover is communicated with a calcining induced draft fan for discharging waste gas generated by calcining, and a negative pressure detection transmitter is installed at an inlet of the calcining induced draft fan.
3. The method for intelligently producing the vanadium tablets based on the expert control system as claimed in claim 2, wherein the speed of the calcining induced draft fan is controlled by PID speed regulation, the PID set value is the expected negative pressure of the melting furnace, and the feedback value is the actual negative pressure of the melting furnace.
4. The method for intelligently producing the tablet vanadium based on the expert control system as claimed in claim 2, wherein the calcination induced draft fan is communicated with an ammonia nitrogen wastewater treatment device.
5. The expert control system-based intelligent production method of vanadium tablets according to claim 1, wherein a drying induced draft fan is communicated with the flash evaporation bag-type dust collector for discharging waste gas generated by drying, and a negative pressure detection transmitter is installed at an inlet of the drying induced draft fan.
6. The method for intelligently producing the tablet vanadium based on the expert control system as claimed in claim 5, wherein the speed control of the drying induced draft fan adopts PID speed regulation, the PID set value is the expected negative pressure of the melting furnace, and the feedback value is the actual negative pressure of the melting furnace.
7. The method for intelligently producing the tablet vanadium based on the expert control system as claimed in claim 5, wherein a drying induced draft fan is communicated with an ammonia nitrogen wastewater treatment device.
8. The method for intelligently producing the tablet vanadium based on the expert control system as claimed in claim 1, wherein a gas regulating valve is arranged on the melting furnace, the opening degree of the gas regulating valve is controlled by PID, the PID setting value is the expected temperature of the melting furnace, and the feedback value is the actual temperature of the melting furnace.
9. The method for intelligently producing the tablet vanadium based on the expert control system as claimed in claim 1, wherein a DCS system is used, and by collecting feedback parameters of a site basic automation system and combining with an expert database control strategy, the execution elements are subjected to regulation control (the opening of a regulating valve and the output rotating speed of a frequency converter), so that the negative pressure stabilization of materials, the vanadium liquid flow stabilization and the energy-saving combustion of coal gas are realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210645343.8A CN115218639A (en) | 2022-06-08 | 2022-06-08 | Method for intelligently producing tablet vanadium based on expert control system |
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| CN202210645343.8A CN115218639A (en) | 2022-06-08 | 2022-06-08 | Method for intelligently producing tablet vanadium based on expert control system |
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| CN115218639A true CN115218639A (en) | 2022-10-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616848A (en) * | 2012-02-27 | 2012-08-01 | 河北钢铁股份有限公司承德分公司 | Production method and production system for vanadium pentoxide |
| CN207741112U (en) * | 2017-12-29 | 2018-08-17 | 浙江富春江环保热电股份有限公司 | A kind of refuse burning system of Di dioxin emissions |
| CN211111742U (en) * | 2019-11-19 | 2020-07-28 | 于宗春 | Control system for process of producing magnesite light burning powder by scintillation boiling calciner |
| CN112919059A (en) * | 2021-04-02 | 2021-06-08 | 安徽马钢设备检修有限公司 | Material blocking prevention control system and control method of disk feeder |
| CN114180625A (en) * | 2021-11-15 | 2022-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for purifying vanadium pentoxide by negative pressure volatilization |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616848A (en) * | 2012-02-27 | 2012-08-01 | 河北钢铁股份有限公司承德分公司 | Production method and production system for vanadium pentoxide |
| CN207741112U (en) * | 2017-12-29 | 2018-08-17 | 浙江富春江环保热电股份有限公司 | A kind of refuse burning system of Di dioxin emissions |
| CN211111742U (en) * | 2019-11-19 | 2020-07-28 | 于宗春 | Control system for process of producing magnesite light burning powder by scintillation boiling calciner |
| CN112919059A (en) * | 2021-04-02 | 2021-06-08 | 安徽马钢设备检修有限公司 | Material blocking prevention control system and control method of disk feeder |
| CN114180625A (en) * | 2021-11-15 | 2022-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for purifying vanadium pentoxide by negative pressure volatilization |
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