CN114115390A - Urea pyrolysis method based on microwaves and control system thereof - Google Patents
Urea pyrolysis method based on microwaves and control system thereof Download PDFInfo
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- CN114115390A CN114115390A CN202010881806.1A CN202010881806A CN114115390A CN 114115390 A CN114115390 A CN 114115390A CN 202010881806 A CN202010881806 A CN 202010881806A CN 114115390 A CN114115390 A CN 114115390A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/08—Preparation of ammonia from nitrogenous organic substances
- C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
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Abstract
The invention provides a urea pyrolysis method based on microwaves and a control system thereof, and relates to the technical field of waste gas treatment, wherein the method comprises the following steps: acquiring gas characteristic parameters at the air outlet, wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed; outputting a first adjusting strategy based on the gas characteristic parameters, wherein the first adjusting strategy is used for representing adjustment of first working parameters, and the first working parameters comprise the power of a microwave source and/or the wind speed of a fan; adjusting the first working parameter according to a first adjustment strategy to obtain a gas characteristic parameter adjustment value, wherein the gas characteristic parameter adjustment value comprises a power adjustment value of a microwave source and/or a wind speed adjustment value of a fan; and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet. The method can realize accurate ammonia emission, has controllable air quantity, is energy-saving and environment-friendly, and improves the efficiency of urea pyrolysis.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, and relates to but is not limited to a urea pyrolysis method based on microwaves and a control system thereof.
Background
The urea is used as a neutral fertilizer, is suitable for various soils and plants, is easy to store and convenient to use, has small destructive effect on the soils, and can generate ammonia gas when the temperature of the urea reaches 550-600 ℃ under the pyrolysis effect, so that the technology of pyrolyzing the urea is more and more concerned by people.
In the traditional urea pyrolysis technology, a flue gas outlet is formed in a flue between a low-temperature pyrolyzer and an economizer, high-temperature flue gas is led out by the flue gas outlet and sent to a pyrolysis furnace after being subjected to dust removal treatment by a high-temperature dust removal device, so that the urea solution is pyrolyzed.
However, the traditional urea pyrolysis technology uses steam to heat at high temperature, and the heat conduction efficiency is low, and urea heat energy increases when heating, stops inconveniently, makes the ammonia concentration that produces after the urea pyrolysis easily ignite or explode when exceeding 15%, thereby leads to the efficiency of urea pyrolysis not high.
Disclosure of Invention
The invention aims to provide a urea pyrolysis method based on microwave and a control system thereof aiming at the defects in the existing urea pyrolysis technology, so as to solve the problems that the high-temperature heating is carried out by using steam in the traditional urea technology, the heat conduction efficiency is low, the heat energy of urea is increased during heating, the urea is inconvenient to stop, and the ammonia gas generated after the urea pyrolysis is easy to ignite or explode when the concentration of the ammonia gas exceeds 15%, so that the urea pyrolysis efficiency is not high.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, the present invention provides a microwave-based urea pyrolysis method, which is applied to a microwave-based urea pyrolysis control system, and comprises:
acquiring gas characteristic parameters at an air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed;
outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan;
adjusting the first working parameter according to the first adjustment strategy to obtain a gas characteristic parameter adjustment value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan;
and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet.
Optionally, before the step of obtaining the characteristic parameter of the gas at the air outlet, the method further includes:
acquiring first indication information of urea received in a reaction cavity;
controlling microwaves generated by a microwave source to carry out pyrolysis treatment on urea entering a reaction cavity based on the first indication information;
and discharging the gas generated after the pyrolysis treatment through the air outlet.
Optionally, when the gas characteristic parameter includes an ammonia gas concentration, outputting a first adjustment strategy based on the gas characteristic parameter, including:
judging a first magnitude relation between the ammonia gas concentration and a preset ammonia gas reference concentration;
outputting a first adjustment strategy comprising reducing microwave power of a microwave source when the first magnitude relationship is that the ammonia gas concentration is greater than the ammonia gas reference concentration;
outputting a first adjustment strategy comprising increasing the microwave power of the microwave source when the first magnitude relationship is that the ammonia gas concentration is less than the ammonia gas reference concentration.
Optionally, when the gas characteristic parameter includes a discharge speed, outputting a first adjustment strategy based on the gas characteristic parameter, including:
judging a second magnitude relation between the discharge speed and a preset discharge speed reference value;
when the second magnitude relation is that the discharge speed is larger than the discharge speed reference value, outputting a first adjusting strategy comprising reducing the wind speed of the fan;
outputting a first adjustment strategy comprising increasing the wind speed of the wind turbine when the second magnitude relationship is that the discharge speed is less than the discharge speed reference value.
Optionally, when the gas characteristic parameter includes an ammonia gas concentration and an exhaust rate, outputting a first adjustment strategy based on the gas characteristic parameter, including:
judging a third size relation between the ammonia concentration and a preset ammonia reference concentration and between the emission speed and a preset emission speed reference value;
when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is greater than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and reducing the wind speed of the fan;
when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is less than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and increasing the wind speed of the fan;
when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is larger than the discharge speed reference value, outputting a first adjusting strategy for increasing the microwave power of the microwave source and reducing the wind speed of the fan;
and when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is smaller than the discharge speed reference value, outputting a first adjustment strategy for increasing the microwave power of the microwave source and increasing the wind speed of the fan.
Optionally, the obtaining of the target gas corresponding to the gas characteristic parameter adjustment value includes:
acquiring a power adjustment value of a microwave source from the gas characteristic parameter adjustment value;
and carrying out pyrolysis treatment on the urea entering the reaction cavity by using the target microwave correspondingly generated by the power adjusting value to obtain target gas.
Optionally, the method further includes:
acquiring a wind speed adjusting value of the fan from the gas characteristic parameter adjusting value;
and acquiring a target wind speed corresponding to the wind speed adjusting value, and controlling the target gas to be discharged from the air outlet at the target wind speed.
In a second aspect, the present invention provides a microwave-based urea pyrolysis apparatus, the apparatus comprising: obtain module, processing module, adjustment module and output module, wherein:
the acquisition module is used for acquiring gas characteristic parameters at the air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed;
a processing module for outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan;
the adjusting module is used for adjusting the first working parameter according to the first adjusting strategy to obtain a gas characteristic parameter adjusting value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan;
and the output module is used for acquiring the target gas corresponding to the gas characteristic parameter adjustment value and discharging the target gas from the air outlet.
In a third aspect, the present invention provides a microwave-based urea pyrolysis control system, comprising: the microwave heating device comprises a controller, a fan, an air inlet, a cavity, a microwave source, a feed hopper and an air outlet, wherein the cavity comprises a reaction cavity, a heating cavity, a heat insulation layer and a metal mesh;
wherein, the fan sets up air intake department, the feeder hopper is followed the external connection of reaction chamber is to the inside of reaction chamber, the feed inlet of feed inlet is in the reaction chamber, the microwave source sets up the outside of reaction chamber, the heating chamber with be provided with between the reaction chamber the metal mesh, the insulating layer with the heating chamber is connected, air outlet department is provided with concentration sensor and/or air velocity transducer.
In a fourth aspect, the invention provides a microwave-based urea pyrolysis control device, comprising: a processor and a memory, the memory for storing instructions, the processor for executing the instructions stored in the memory to cause the apparatus to perform the microwave-based urea pyrolysis method according to the first aspect.
The invention has the beneficial effects that: the invention discloses a urea pyrolysis method based on microwaves and a control system thereof, wherein the method is applied to a urea pyrolysis control system based on microwaves and comprises the following steps: acquiring gas characteristic parameters at an air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed; outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan; adjusting the first working parameter according to the first adjustment strategy to obtain a gas characteristic parameter adjustment value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan; and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet. That is to say, the invention realizes the purpose of pyrolyzing urea under the action of the microwave source, and adjusts the power of the microwave source and/or the wind speed of the fan according to the ammonia concentration and/or the discharge speed of the air outlet, so as to obtain the target gas meeting the discharge standard, thereby not only realizing the purpose of accurately discharging ammonia, but also realizing controllable wind quantity, energy conservation and environmental protection, and greatly improving the efficiency of pyrolyzing urea.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow diagram of a microwave-based urea pyrolysis process provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a microwave-based urea pyrolysis apparatus provided in accordance with another embodiment of the present invention;
FIG. 3 is a schematic diagram of a microwave-based urea pyrolysis control system according to yet another embodiment of the present invention;
FIG. 4 is a schematic diagram of another microwave-based urea pyrolysis control device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terms to which the present invention relates will be explained first:
urea: also called carbonamide (carbamide), which is an organic compound consisting of carbon, nitrogen, oxygen and hydrogen, is a white crystal, is one of the simplest organic compounds, is a main nitrogen-containing end product of protein metabolism and decomposition in mammals and certain fishes, and is also a nitrogen fertilizer with the highest nitrogen content at present.
Urea pyrolysis: the urea pyrolysis reaction is CO (NH2)2 ═ NH3+ HNCO, HNCO + H2O ═ NH3+ CO2, the reaction condition is air or flue gas at the temperature of 350-.
FIG. 1 is a schematic flow diagram of a microwave-based urea pyrolysis process provided by an embodiment of the present invention; FIG. 2 is a schematic diagram of a microwave-based urea pyrolysis apparatus provided in accordance with another embodiment of the present invention; FIG. 3 is a schematic diagram of a microwave-based urea pyrolysis control system according to yet another embodiment of the present invention; FIG. 4 is a schematic diagram of another microwave-based urea pyrolysis control device according to another embodiment of the present invention. The microwave-based urea pyrolysis method provided by the embodiment of the invention will be described in detail below with reference to fig. 1 to 4.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides a microwave-based urea pyrolysis method, which is applied to a microwave-based urea pyrolysis control system, and as shown in fig. 1, a schematic flow diagram of the microwave-based urea pyrolysis method provided in an embodiment of the present invention is provided, and the steps included in the method are specifically described below with reference to fig. 1.
Step S101: acquiring gas characteristic parameters at an air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed.
Specifically, the gas characteristic parameter may be a gas characteristic parameter of gas exhausted from the air outlet, the gas may include ammonia gas generated after microwave pyrolysis of urea, the gas characteristic parameter may include the ammonia gas concentration and/or an exhaust speed, and the exhaust speed may include a flow rate of gas exhausted from the air outlet.
In the actual processing procedure, air outlet department can set up concentration sensor and air velocity transducer, concentration sensor can be ammonia gas concentration sensor, concentration sensor can be used for detecting the follow the concentration of air outlet exhaust ammonia, air velocity transducer can be used for detecting the follow the discharge velocity of air outlet department combustion gas.
Before step S101, the method further comprises:
step S001: first indication information of urea received in the reaction cavity is obtained.
Specifically, a urea sensor can be arranged in the microwave-based urea pyrolysis control system, the urea sensor can be used for sensing whether urea begins to be received in the reaction cavity, when the urea conveyed from the feed hopper is received in the reaction cavity, the urea sensor can sense that urea begins to be received in the reaction cavity, at the moment, sensing information can be correspondingly generated, and therefore the controller can receive the sensing information; the first indication information may include sensing information generated when the urea sensor senses that urea is received in the reaction cavity.
Step S002: and controlling the microwaves generated by the microwave source to carry out pyrolysis treatment on the urea entering the reaction cavity based on the first indication information.
Specifically, the controller may control the microwave source to be turned on based on the first indication information, so that the microwave source heats the urea. Wherein the pyrolysis treatment may include a heating treatment.
Step S003: and discharging the gas generated after the pyrolysis treatment through the air outlet.
Specifically, when the microwave source heats the urea in the reaction chamber to a preset temperature range, ammonia gas generated after pyrolysis of the urea can be obtained, and then the ammonia gas is discharged from the air outlet. Wherein the gas may comprise ammonia gas. Step S102: outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan.
Specifically, when the gas characteristic parameter includes the ammonia gas concentration and/or the discharge speed, and the first operating parameter includes the power of the microwave source and/or the wind speed of the fan, the ammonia gas concentration and/or the discharge speed may be compared with a preset ammonia gas reference concentration and/or a preset discharge speed reference value to obtain a comparison result, and a first adjustment strategy for adjusting the first operating parameter is output according to the comparison result, so that the adjusted gas characteristic parameter is consistent with the preset gas characteristic reference parameter.
In the actual process, step S102 may include:
step S11: and judging a first magnitude relation between the ammonia gas concentration and a preset ammonia gas reference concentration.
Specifically, because the ammonia concentration that discharges away is in 16 ~ 25% and accords with the safety standard, has the danger of blasting when exceeding 25%, consequently, to the ammonia that produces after the urea pyrolysis, can its concentration of real-time detection to this avoids igniting even the danger of blasting.
Illustratively, the ammonia gas reference concentration may be 25%.
Step S12: and outputting a first adjusting strategy comprising reducing the microwave power of the microwave source when the first magnitude relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration.
Specifically, when determining that the ammonia concentration of wind gap exhaust ammonia is greater than ammonia reference concentration, can think that the air outlet exhaust ammonia volume is too much and leads to the ammonia concentration too high, can reduce the processing to the power of microwave source this moment to reduce the ammonia concentration of air outlet, avoid igniting or even burning and exploding.
Step S13: outputting a first adjustment strategy comprising increasing the microwave power of the microwave source when the first magnitude relationship is that the ammonia gas concentration is less than the ammonia gas reference concentration.
Specifically, when the ammonia concentration of the ammonia gas discharged from the air outlet is determined to be greater than the ammonia reference concentration, the ammonia gas concentration is considered to be too low due to too low ammonia gas amount discharged from the air outlet, and the power of the microwave source can be increased at the moment to increase the ammonia gas concentration at the air outlet.
Step S102 may also include:
step S21: and judging a second magnitude relation between the discharge speed and a preset discharge speed reference value.
Specifically, because the gaseous emission rate of air outlet can lead to the ammonia concentration to hang down excessively when hanging down, can lead to the ammonia concentration too high when the gaseous emission rate of air outlet is too high, consequently can detect out the gaseous emission rate in real time wind gap to this guarantees that the gas of air outlet department requires to discharge with the discharge rate of predetermineeing.
Step S22: when the second magnitude relation is that the discharge speed is greater than the discharge speed reference value, outputting a first adjustment strategy comprising reducing the wind speed of the fan.
Specifically, when the preset discharge velocity value of the air outlet gas is determined, the discharge velocity of the air outlet gas is considered to be too high, so that the amount of ammonia discharged from the air outlet is too much, and the air speed of the fan at the air inlet can be reduced at the moment so as to reduce the concentration of the ammonia discharged from the air outlet.
Step S23: outputting a first adjustment strategy comprising increasing the wind speed of the wind turbine when the second magnitude relationship is that the discharge speed is less than the discharge speed reference value.
Specifically, when determining that the discharge velocity of the air outlet gas is less than the preset discharge velocity reference value, the discharge velocity of the air outlet gas is considered to be too low and the amount of ammonia at the air outlet is too small, and at the moment, the air speed of the fan at the air inlet can be increased to increase the concentration of the ammonia discharged from the air outlet.
Step S102 may further include:
step S31: and judging a third size relation between the ammonia gas concentration and a preset ammonia gas reference concentration and between the emission speed and a preset emission speed reference value.
Specifically, in order to ensure that the discharge speed of the air at the air outlet is consistent with the preset discharge speed reference value and the ammonia concentration of the ammonia discharged from the air outlet is consistent with the preset ammonia reference concentration, the discharge speed at the air outlet and the ammonia concentration of the ammonia discharged from the air outlet can be detected in real time, so that the ammonia concentration is also consistent with the ammonia reference concentration while the air outlet is discharged with the preset discharge speed reference value.
Step S32: and when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is greater than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and reducing the wind speed of the fan.
Specifically, when determining that the ammonia concentration of the ammonia gas discharged from the air outlet is greater than the ammonia reference concentration and the discharge speed of the air at the air outlet is greater than the discharge speed reference value, the ammonia amount of the ammonia gas at the air outlet is considered to be too much and the discharge speed is too high, the power of the microwave source can be reduced at the moment, and the wind speed of the fan is reduced so as to reduce the discharge speed of the air at the air outlet and the concentration of the ammonia gas at the air outlet.
Step S33: and when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is less than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and increasing the wind speed of the fan.
Specifically, when determining that the ammonia concentration of the ammonia gas discharged from the air outlet is greater than the ammonia reference concentration and the discharge speed of the air at the air outlet is less than the discharge speed reference value, the ammonia amount of the ammonia gas at the air outlet is considered to be too much and the discharge speed is too low, the power of the microwave source can be reduced at the moment, and the wind speed of the fan is increased to increase the discharge speed of the air at the air outlet and reduce the concentration of the ammonia gas at the air outlet.
Step S34: and when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is larger than the discharge speed reference value, outputting a first adjustment strategy for increasing the microwave power of the microwave source and reducing the wind speed of the fan.
Specifically, when determining that the ammonia concentration of the ammonia gas discharged from the air outlet is less than the ammonia reference concentration and the discharge speed of the air at the air outlet is greater than the discharge speed reference value, the ammonia amount of the ammonia gas at the air outlet is considered to be too low and the discharge speed is too high, the power of the microwave source can be increased at the moment, and the wind speed of the fan is reduced to reduce the discharge speed of the air at the air outlet and increase the concentration of the ammonia gas at the air outlet.
Step S35: and when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is smaller than the discharge speed reference value, outputting a first adjustment strategy for increasing the microwave power of the microwave source and increasing the wind speed of the fan.
Specifically, when determining that the ammonia concentration of the ammonia gas discharged from the air outlet is less than the ammonia reference concentration and the discharge speed of the air at the air outlet is less than the discharge speed reference value, the ammonia amount of the ammonia gas at the air outlet is considered to be too low and the discharge speed is too low, at the moment, the power of the microwave source can be increased, and the wind speed of the fan is increased to increase the discharge speed of the air at the air outlet and the concentration of the ammonia gas at the air outlet.
Step S103: adjusting the first working parameter according to the first adjustment strategy to obtain a gas characteristic parameter adjustment value; and the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan.
Specifically, the controller may control and adjust the power of the microwave source and/or the wind speed of the fan at the air inlet according to the first adjustment strategy until the concentration of the ammonia gas at the air outlet is consistent with a preset ammonia gas reference concentration, and/or the discharge speed of the air at the air outlet is consistent with a preset discharge speed reference value, and the adjustment operation is finished, and when the adjustment operation is finished, the corresponding power value of the microwave source and/or the wind speed value of the fan is the power adjustment value of the microwave source and/or the wind speed adjustment value of the fan.
Step S104: and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet.
Specifically, the obtaining of the target gas corresponding to the gas characteristic parameter adjustment value may include:
step S1041: and acquiring a power adjustment value of the microwave source from the gas characteristic parameter adjustment value.
Specifically, when the gas characteristic parameter adjustment value includes a power adjustment value of the microwave source or includes a power adjustment value of the microwave source and a wind speed adjustment value of the fan, the microwave source power adjustment value may be directly read from the gas characteristic parameter adjustment value.
Step S1042: and carrying out pyrolysis treatment on the urea entering the reaction cavity by using the target microwave correspondingly generated by the power adjusting value to obtain target gas.
Specifically, the microwave source can generate target microwaves under the action of the power adjustment value, the target microwaves are used for carrying out pyrolysis treatment on urea to obtain target gas, and then the target gas is discharged from the air outlet. Wherein, the target gas can include ammonia gas meeting the concentration requirement.
In the actual processing procedure, step S1042 may further include:
step S41: and acquiring a wind speed adjusting value of the fan from the gas characteristic parameter adjusting value.
Specifically, when the gas characteristic parameter adjustment value includes a wind speed adjustment value of the fan or includes a wind speed adjustment value of the fan and a power adjustment value of the microwave source, the wind speed adjustment value of the fan may also be directly read from the gas characteristic parameter adjustment value.
Step S42: and acquiring a target wind speed corresponding to the wind speed adjusting value, and controlling the target gas to be discharged from the air outlet at the target wind speed.
Specifically, the fan at the air inlet generates a target air speed matched with the air speed adjusting value under the action of the air speed adjusting value, and then the target air speed is used for discharging target gas generated after pyrolysis treatment from the air outlet. The target gas may include ammonia gas meeting the concentration requirement, and the target wind speed may be the same as a preset discharge speed reference value, or may satisfy a preset relationship with the discharge speed reference value, which is not limited herein.
In the embodiment of the invention, when the controller in the microwave-based urea pyrolysis control system determines that the discharge speed of the gas at the air outlet is greater than or less than the discharge speed reference value, the wind speed of the fan at the air inlet can be controlled and adjusted, for example, the wind speed of the fan is reduced or increased, and when the controller determines that the ammonia concentration of the ammonia at the air outlet is greater than or less than the ammonia reference concentration, the power of the microwave source can be controlled and adjusted, for example, the power of the microwave source is reduced or the power of the microwave source is increased. The ammonia gas that accords with the emission concentration requirement and the discharge velocity of air outlet department gas are discharged with the target wind speed with this realization air outlet department discharge, have not only realized the purpose of accurate emission ammonia, and the amount of wind is controllable moreover, and is energy-concerving and environment-protective to the efficiency of pyrolysis urea has been improved greatly.
In the embodiment of the invention, the urea pyrolysis method based on microwave is applied to a urea pyrolysis control system based on microwave, and comprises the following steps: acquiring gas characteristic parameters at an air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed; outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan; adjusting the first working parameter according to the first adjustment strategy to obtain a gas characteristic parameter adjustment value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan; and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet. That is to say, the invention realizes the purpose of pyrolyzing urea under the action of the microwave source, and adjusts the power of the microwave source and/or the wind speed of the fan according to the ammonia concentration and/or the discharge speed of the air outlet, so as to obtain the target gas meeting the discharge standard, thereby not only realizing the purpose of accurately discharging ammonia, but also realizing controllable wind quantity, energy conservation and environmental protection, and greatly improving the efficiency of pyrolyzing urea.
In another possible embodiment, the present invention also provides a microwave-based urea pyrolysis apparatus, as shown in fig. 2, comprising: an obtaining module 201, a processing module 202, an adjusting module 203, and an output module 204, wherein:
an obtaining module 201, configured to obtain a gas characteristic parameter at the air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed.
A processing module 202 configured to output a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan.
The adjusting module 203 is configured to adjust the first working parameter according to the first adjusting policy to obtain a gas characteristic parameter adjustment value; and the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan.
And the output module 204 is used for acquiring the target gas corresponding to the gas characteristic parameter adjustment value and discharging the target gas from the air outlet.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
The urea pyrolysis device based on microwave in the embodiment of the invention comprises: the acquisition module is used for acquiring gas characteristic parameters at the air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed; a processing module for outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan; the adjusting module is used for adjusting the first working parameter according to the first adjusting strategy to obtain a gas characteristic parameter adjusting value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan; and the output module is used for acquiring the target gas corresponding to the gas characteristic parameter adjustment value and discharging the target gas from the air outlet. That is to say, the invention realizes the purpose of pyrolyzing urea under the action of the microwave source, and adjusts the power of the microwave source and/or the wind speed of the fan according to the ammonia concentration and/or the discharge speed of the ammonia at the air outlet, so as to obtain the target gas meeting the discharge standard, thereby not only realizing the purpose of accurately discharging ammonia, but also realizing controllable wind speed, energy conservation and environmental protection, and greatly improving the efficiency of pyrolyzing urea.
In another possible embodiment, the present invention further provides a microwave-based urea pyrolysis control system, as shown in fig. 3, including: the microwave heating device comprises a controller, a fan, an air inlet, a cavity, a microwave source, a feed hopper and an air outlet, wherein the cavity comprises a reaction cavity, a heating cavity, a heat insulation layer and a metal mesh;
wherein, the fan sets up air intake department, the feeder hopper is followed the external connection of reaction chamber is to the inside of reaction chamber, the microwave source sets up the outside of reaction chamber, the heating chamber with be provided with between the reaction chamber the metal mesh, the insulating layer with the heating chamber is connected, air outlet department is provided with concentration sensor and/or air velocity transducer.
In the embodiment of the invention, one end of the feed hopper is used for adding urea, and the other end of the feed hopper is used for injecting the added urea into the reaction cavity.
In the embodiment of the invention, the device is further provided with a controller, and the controller is respectively connected with the microwave source, the fan and the air inlet.
In the embodiment of the invention, the reaction cavity is provided with a plurality of holes and is made of a metal material which does not absorb microwaves.
In the embodiment of the present invention, the number of the microwave sources is plural.
In the embodiment of the invention, when the number of the microwave sources is more than one, the microwave sources are arranged at the top of the outer wall of the reaction chamber at set intervals.
In an embodiment of the present invention, a heating body is disposed in the heating chamber, and the heating body includes a microwave absorbing material.
In an embodiment of the present invention, a heat insulating material is disposed in the heat insulating layer.
In the embodiment of the invention, the air outlet and the air inlet are arranged at two sides of the reaction cavity, and one side of the air outlet is parallel to one side of the air inlet.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
The embodiment of the invention provides a urea pyrolysis control system based on microwave, which comprises: the microwave heating device comprises a controller, a fan, an air inlet, a cavity, a microwave source, a feed hopper and an air outlet, wherein the cavity comprises a reaction cavity, a heating cavity, a heat insulation layer and a metal mesh; wherein, the fan sets up air intake department, the feeder hopper is followed the external connection of reaction chamber is to the inside of reaction chamber, the feed inlet of feed inlet is in the reaction chamber, the microwave source sets up the outside of reaction chamber, the heating chamber with be provided with the metal mesh between the reaction chamber, the insulating layer with the heating chamber is connected, air outlet department is provided with concentration sensor and/or air velocity transducer. That is to say, the invention realizes the purpose of pyrolyzing urea under the action of the microwave source, and adjusts the power of the microwave source and/or the wind speed of the fan according to the ammonia concentration and/or the discharge speed of the air outlet, so as to obtain the target gas meeting the discharge standard, thereby not only realizing the purpose of accurately discharging ammonia, but also realizing controllable wind quantity, energy conservation and environmental protection, and greatly improving the efficiency of pyrolyzing urea.
Fig. 4 is a schematic diagram of a microwave-based urea pyrolysis control apparatus provided in an embodiment of the present invention, which may be integrated in a terminal device or a chip of the terminal device, and includes: a memory 401 and a processor 402.
The memory 401 is adapted to store instructions and the processor 402 is adapted to execute the instructions stored in the memory 401 to cause the apparatus to perform the above-described method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
Preferably, the present invention also provides a program product, such as a computer-readable storage medium, comprising a program which, when executed by a processor, is adapted to carry out the above-mentioned method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (10)
1. A microwave-based urea pyrolysis method is applied to a microwave-based urea pyrolysis control system, and comprises the following steps:
acquiring gas characteristic parameters at an air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed;
outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan;
adjusting the first working parameter according to the first adjustment strategy to obtain a gas characteristic parameter adjustment value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan;
and acquiring target gas corresponding to the gas characteristic parameter adjustment value, and discharging the target gas from the air outlet.
2. A microwave-based urea pyrolysis method according to claim 1, wherein before the step of obtaining the gas characteristic parameters at the air outlet, the method further comprises:
acquiring first indication information of urea received in a reaction cavity;
controlling microwaves generated by a microwave source to carry out pyrolysis treatment on urea entering a reaction cavity based on the first indication information;
and discharging the gas generated after the pyrolysis treatment through the air outlet.
3. The microwave-based urea pyrolysis method of claim 1, wherein when the gas characteristic parameter comprises ammonia gas concentration, outputting a first adjustment strategy based on the gas characteristic parameter comprises:
judging a first magnitude relation between the ammonia gas concentration and a preset ammonia gas reference concentration;
outputting a first adjustment strategy comprising reducing microwave power of a microwave source when the first magnitude relationship is that the ammonia gas concentration is greater than the ammonia gas reference concentration;
outputting a first adjustment strategy comprising increasing the microwave power of the microwave source when the first magnitude relationship is that the ammonia gas concentration is less than the ammonia gas reference concentration.
4. A microwave-based urea pyrolysis method as recited in claim 1, wherein outputting a first adjustment strategy based on the gas characteristic parameter when the gas characteristic parameter comprises an emission rate comprises:
judging a second magnitude relation between the discharge speed and a preset discharge speed reference value;
when the second magnitude relation is that the discharge speed is larger than the discharge speed reference value, outputting a first adjusting strategy comprising reducing the wind speed of the fan;
outputting a first adjustment strategy comprising increasing the wind speed of the wind turbine when the second magnitude relationship is that the discharge speed is less than the discharge speed reference value.
5. A microwave-based urea pyrolysis method according to claim 1, wherein when the gas characteristic parameters include ammonia concentration and discharge rate, outputting a first adjustment strategy based on the gas characteristic parameters, comprising:
judging a third size relation between the ammonia concentration and a preset ammonia reference concentration and between the emission speed and a preset emission speed reference value;
when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is greater than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and reducing the wind speed of the fan;
when the third size relation is that the ammonia gas concentration is greater than the ammonia gas reference concentration and the discharge speed is less than the discharge speed reference value, outputting a first adjustment strategy for reducing the microwave power of the microwave source and increasing the wind speed of the fan;
when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is larger than the discharge speed reference value, outputting a first adjusting strategy for increasing the microwave power of the microwave source and reducing the wind speed of the fan;
and when the third size relation is that the ammonia gas concentration is smaller than the ammonia gas reference concentration and the discharge speed is smaller than the discharge speed reference value, outputting a first adjustment strategy for increasing the microwave power of the microwave source and increasing the wind speed of the fan.
6. The microwave-based urea pyrolysis method according to claim 1, wherein the obtaining of the target gas corresponding to the gas characteristic parameter adjustment value comprises:
acquiring a power adjustment value of a microwave source from the gas characteristic parameter adjustment value;
and carrying out pyrolysis treatment on the urea entering the reaction cavity by using the target microwave correspondingly generated by the power adjusting value to obtain target gas.
7. A microwave-based urea pyrolysis method as claimed in claim 6, further comprising:
acquiring a wind speed adjusting value of the fan from the gas characteristic parameter adjusting value;
and acquiring a target wind speed corresponding to the wind speed adjusting value, and controlling the target gas to be discharged from the air outlet at the target wind speed.
8. A microwave-based urea pyrolysis apparatus, comprising: obtain module, processing module, adjustment module and output module, wherein:
the acquisition module is used for acquiring gas characteristic parameters at the air outlet; wherein the gas characteristic parameters comprise ammonia concentration and/or discharge speed;
a processing module for outputting a first adjustment strategy based on the gas characteristic parameter; the first adjusting strategy is used for indicating that a first working parameter is adjusted, and the first working parameter comprises the power of a microwave source and/or the wind speed of a fan;
the adjusting module is used for adjusting the first working parameter according to the first adjusting strategy to obtain a gas characteristic parameter adjusting value; wherein the gas characteristic parameter adjusting value comprises a power adjusting value of a microwave source and/or a wind speed adjusting value of a fan;
and the output module is used for acquiring the target gas corresponding to the gas characteristic parameter adjustment value and discharging the target gas from the air outlet.
9. A microwave-based urea pyrolysis control system, the system comprising: the microwave heating device comprises a controller, a fan, an air inlet, a cavity, a microwave source, a feed hopper and an air outlet, wherein the cavity comprises a reaction cavity, a heating cavity, a heat insulation layer and a metal mesh;
wherein, the fan sets up air intake department, the feeder hopper is followed the external connection of reaction chamber is to the inside of reaction chamber, the microwave source sets up the outside of reaction chamber, the heating chamber with be provided with between the reaction chamber the metal mesh, the insulating layer with the heating chamber is connected, air outlet department is provided with concentration sensor and/or air velocity transducer.
10. A urea pyrolysis control device based on microwave, characterized in that, the control device includes: a processor and a memory, the memory for storing instructions, the processor for executing the instructions stored in the memory to cause the apparatus to perform the microwave-based urea pyrolysis method of any one of claims 1-7.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647324A2 (en) * | 2004-10-16 | 2006-04-19 | Robert Bosch Gmbh | Improved preparation of agents for NOx reduction |
| CN101125666A (en) * | 2007-08-24 | 2008-02-20 | 中电投远达环保工程有限公司 | Technique for preparing ammonia from urea by pyrolysis method |
| CN104548931A (en) * | 2014-12-31 | 2015-04-29 | 浙江百能科技有限公司 | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source |
| CN205137886U (en) * | 2015-11-10 | 2016-04-06 | 沈阳洛卡环保工程有限公司 | Heater and urea pyrolysis system ammonia system |
| CN105883853A (en) * | 2016-06-28 | 2016-08-24 | 盐城工学院 | Method for preparing ammonia with urea |
| CN107448266A (en) * | 2017-08-29 | 2017-12-08 | 青岛双瑞海洋环境工程股份有限公司 | The automatic adding method of marine exhaust denitration urea and its device |
| CN107812449A (en) * | 2017-12-06 | 2018-03-20 | 烟台龙源电力技术股份有限公司 | A kind of urea pyrolysis denitration control system |
| CN108126517A (en) * | 2017-12-22 | 2018-06-08 | 大唐洛阳首阳山发电有限责任公司 | A kind of hydrolysis of power plant supplies ammonia denitrating system and its control method |
| CN108479380A (en) * | 2018-03-20 | 2018-09-04 | 中北大学 | A kind of hypergravity SCR denitration device and its denitrating technique |
-
2020
- 2020-08-28 CN CN202010881806.1A patent/CN114115390A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647324A2 (en) * | 2004-10-16 | 2006-04-19 | Robert Bosch Gmbh | Improved preparation of agents for NOx reduction |
| CN101125666A (en) * | 2007-08-24 | 2008-02-20 | 中电投远达环保工程有限公司 | Technique for preparing ammonia from urea by pyrolysis method |
| CN104548931A (en) * | 2014-12-31 | 2015-04-29 | 浙江百能科技有限公司 | Device for producing ammonia gas through pyrolysis of urea by using high-temperature flue gas as heat source |
| CN205137886U (en) * | 2015-11-10 | 2016-04-06 | 沈阳洛卡环保工程有限公司 | Heater and urea pyrolysis system ammonia system |
| CN105883853A (en) * | 2016-06-28 | 2016-08-24 | 盐城工学院 | Method for preparing ammonia with urea |
| CN107448266A (en) * | 2017-08-29 | 2017-12-08 | 青岛双瑞海洋环境工程股份有限公司 | The automatic adding method of marine exhaust denitration urea and its device |
| CN107812449A (en) * | 2017-12-06 | 2018-03-20 | 烟台龙源电力技术股份有限公司 | A kind of urea pyrolysis denitration control system |
| CN108126517A (en) * | 2017-12-22 | 2018-06-08 | 大唐洛阳首阳山发电有限责任公司 | A kind of hydrolysis of power plant supplies ammonia denitrating system and its control method |
| CN108479380A (en) * | 2018-03-20 | 2018-09-04 | 中北大学 | A kind of hypergravity SCR denitration device and its denitrating technique |
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