CN107391806A - Plasma refuse gasification boiler and its processing method, computer-readable storage medium - Google Patents
Plasma refuse gasification boiler and its processing method, computer-readable storage medium Download PDFInfo
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Abstract
The embodiments of the invention provide a kind of plasma refuse gasification boiler and its processing method, computer-readable storage medium, this method to include：In the case of assuming that the temperature in plasma refuse gasification boiler is T, the Gibbs free energys of the system of the gasification furnace are calculated；Based on Gibbs minimization of free energy principles, the component and content of material in the gasification furnace are determined；The component and content of the material according to the gasification furnace, calculate the gross energy of the system before the reaction and reacted gross energy；According to the difference of the gross energy before the reaction and the reacted gross energy, judge whether the temperature of the hypothesis is correct.As can be seen here, the comparison of gross energy, the temperature of output-response and the component of material and content before and after the embodiment of the present invention is reacted, can be as the reference of gasification furnace technological design, for example, operating power of gasification furnace etc. can be designed based on the output.
Description
Technical field
The present invention relates generally to domestic garbage burning electricity generation field, more particularly to a kind of plasma refuse gasification boiler
And its processing method, computer-readable storage medium.
Background technology
With expanding economy and the raising of living standards of the people, the yield of municipal refuse is also being continuously increased.City rubbish
The conventional processing method of rubbish has landfill method, composting process and a burning method, but existing waste incinerator, is anti-under excess oxygen
Should, gaseous product is mainly carbon dioxide and water, and calorific value is very low.And the nuisances such as bioxin are easily produced in burning process
Matter, inorganic matter are converted mainly into flying dust and bottom ash, it is also difficult to handle, it is seen that these conventional methods can not realize the thorough of rubbish
Processing.Plasma gasification method is a kind of more cleaning, processing method efficiently, economic.Plasma gasification method handles city
Rubbish, it has the advantages that high temperature, high enthalpy and high reaction activity, and organic matter is converted into the fuel gas such as carbon monoxide and hydrogen,
Calorific value is very high, and inorganic matter is converted into melt substance, can form vitreum as construction timber.The decrement of rubbish can be realized
Change, innoxious and recycling, therefore, plasma gasification method is more cleaning, waste disposal method efficiently, economic.Wait
In gas ions gasification, the various components in gasification furnace are in constantly change, and therefore, gasification furnace can be used as by needing one kind badly
The reference of technological design, to ensure processing of the gasification to rubbish.
The content of the invention
The present invention is proposed in view of above mentioned problem.The invention provides a kind of plasma refuse gasification boiler and its place
Reason method, computer-readable storage medium, it is proposed that the dynamic equilibrium modeling method of plasma refuse gasification boiler, can be gasification furnace
Technological design provides reference.
The invention provides a kind of processing method of plasma refuse gasification boiler, including：
In the case of assuming that the temperature in plasma refuse gasification boiler is T, the Ji of the system of the gasification furnace is calculated
Buss (Gibbs) free energy；
Based on Gibbs minimization of free energy principles, the component and content of material in the gasification furnace are determined；
The component and content of the material according to the gasification furnace, calculate the gross energy of the system before the reaction with it is anti-
Gross energy after answering；
According to the difference of the gross energy before the reaction and the reacted gross energy, judging the temperature of the hypothesis is
It is no correct.
Exemplarily, in addition to：
If the absolute value of the difference is more than or equal to default error amount, the processing method is re-executed；
If the absolute value of the difference is less than the default error amount, the temperature of the hypothesis and described is exported
The component and content of material.
Exemplarily, the gross energy before the reaction subtracts solid inert for the energy sum of all components of the material
The energy of material.
Exemplarily, the energy of the solid inert material is expressed as：
Qs=cm (T-T0)+m Λ,
Wherein, c represents the specific heat capacity of the solid inert material, and m represents the quality of the solid inert material, and Λ is represented
The heat of solution of the solid inert material, T0Represent initial temperature.
Exemplarily, the gross energy before the reaction is expressed as：
Wherein, GtRepresent the gross energy in material described in t, Fin,tRepresent component i molar flow, Gi,tRepresent in t
Moment component i Gibbs free energys, QhThe extraneous heat provided, Q are providedsRepresent the energy of the solid inert material.
Second aspect, there is provided a kind of plasma refuse gasification boiler, including memory, processor and it is stored in described deposit
The computer program run on reservoir and on the processor, above-mentioned first party is realized during the computing device described program
The step of face or any example methods described.
The third aspect, there is provided a kind of computer-readable storage medium, be stored thereon with computer program, described program is processed
The step of device realizes above-mentioned first aspect or any example methods described when performing.
As can be seen here, the comparison of gross energy, the temperature of output-response and the group of material before and after the embodiment of the present invention is reacted
Part and content, can be as the reference of gasification furnace technological design, for example, the operating power of gasification furnace can be designed based on the output
Deng.
Brief description of the drawings
The embodiment of the present invention is described in more detail below with reference to accompanying drawing, above-mentioned and other mesh of the invention
, feature and advantage will be apparent.Accompanying drawing is used for that the embodiment of the present invention is further explained, and the accompanying drawing is formed
Part for specification, and be not construed as limiting the invention together with the embodiment of the present invention for explaining the present invention.Attached
In figure, identical reference typically represents same or analogous part or step.
Fig. 1 is an indicative flowchart of the processing method of the plasma refuse gasification boiler of the embodiment of the present invention；
Fig. 2 is another indicative flowchart of the processing method of the plasma refuse gasification boiler of the embodiment of the present invention.
Embodiment
Become apparent in order that obtaining the object, technical solutions and advantages of the present invention, this is described in detail below with reference to accompanying drawings
The example embodiment of invention.Obviously, described embodiment be only the present invention part of the embodiment, rather than the present invention
Whole embodiments, it should be appreciated that the present invention is not limited by example embodiment described herein.Based on this hair described in the present invention
Bright embodiment, those skilled in the art's all other embodiment resulting in the case where not paying creative work all should
Fall under the scope of the present invention.
Plasma gasification can be by high temperature caused by plasma arc (center be up to 7000 DEG C), rapidly by rubbish
Organic matter in rubbish is converted into fuel gas, and inorganic matter is converted into melt substance, is by garbage decrement, innoxious, recycling
A kind of mode of processing.
In the embodiment of the present invention, plasma refuse gasification boiler is referred to as plasma gasification stove, or referred to as
Gasification furnace.
Fig. 1 is an exemplary process diagram of the processing method of the plasma refuse gasification boiler of the embodiment of the present invention.Fig. 1
Shown method includes：
S101, in the case of assuming that temperature in plasma refuse gasification boiler is T, the system that calculates the gasification furnace
Gibbs (Gibbs) free energy；
S102, based on Gibbs minimization of free energy principles, determine the component and content of material in the gasification furnace；
S103, the component and content of the material according to the gasification furnace, calculate the total energy of the system before the reaction
Amount and reacted gross energy；
S104, according to the difference of the gross energy before the reaction and the reacted gross energy, judge the hypothesis
Whether temperature is correct.
Due to mass conservation law, before the reaction after material in gasification furnace quality should be to maintain it is constant.Known t
Quality, feed components and the flow of each component (also referred to as composition or component) in moment gasification furnace, first by t gasification furnace
Material is mixed with the feed material in the Δ t periods, the initial reactant calculated as this wheel.Its quality of material conservation side
Cheng Wei：ni0,t+Δt=ni,t+Δt·Fin,i。
In formula, ni0,t+ΔtFor this, wheel calculates the amount of component i parent material, and unit is mol；ni,tTo be original in gasification furnace
The amount of component i material, unit are mol；Fin,iFor feed components i molar flow, unit mol/s；Δ t calculates for often wheel
Institute's interlude, unit are the seconds (s).
After before the reaction, although component is changed, atomicity should be conservation, therefore have：
I.e.
Wherein, βijThe atom j contained in molecular formula for component i number；njFor atom j molal quantity, unit is
mol。
Exemplarily, in S101, it is assumed that the temperature in plasma refuse gasification boiler is T, due to system Gibbs from
By that can be the function of temperature and component, so total Gibbs free energys of system can be expressed as：
Wherein, Gt+ΔtWhen expression temperature is T, total Gibbs free energys of t+ time Δt systems, unit is kJ；Gi,t+ΔtTable
Show component i Gibbs free energys, unit is kJ/mol.
G in above formulai,t+ΔtIt can convert to obtain by standard Gibbs free energys, it is as follows：
Therefore, total Gibbs free energys of the system obtained by S101 can be expressed as：
Wherein,The Gibbs free energys of component i under the status of criterion are represented, unit is kJ/mol, can directly pass through data
Storehouse checks in；fiComponent i fugacities corresponding under Current Temperatures and pressure are represented, unit is kPa； fi 0Represent component i in standard
Fugacity under state, unit are kPa；R represents thermodynamic equilibrium constant, and its value is 8.314J/ (molK)；T is the temperature assumed,
Unit is K.
It is understood that the temperature assumed here is reacted temperature, that is, the temperature after gasifying.In temperature T, gas
The material changed in stove is gasified, and correspondingly, component refers to gas-phase product.
Exemplarily, in S102, because when reaction reaches balance, the Gibbs free energys of whole system should be minimum,
The component of whole system and the Solve problems of content are converted into solution constraint bar when the moment reaction therefore can be reached to balance
Constrained and Unconstrained Optimization under part.
Wherein, dynamic equilibrium refers to：Under certain condition, the positive reaction speed of reversible reaction is equal with back reaction speed,
The concentration of reactant and the concentration of product no longer change.
The Constrained and Unconstrained Optimization can be expressed as following formula：
So, optimization computation is carried out to the Constrained and Unconstrained Optimization, can be to obtain for example, using the method for Lagrangian multipliers
Under the temperature T and current pressure of hypothesis, the component and content of the material in gasification furnace.
It can be seen that when calculating the component and content of gaseous product, using Gibbs free-surface gravity flows, without examining
Consider and specifically reacted in gas phase, it is only necessary to know its material mass and gasifier temperature, can be in the hope of the component of gas-phase product
And content.This method is simple and convenient, and accuracy is high.
Exemplarily, in S103, the front and rear gross energy of reaction can be calculated respectively.As one, reacted total energy
Amount can be Gibbs gross energies resulting in foregoing S101, i.e. Gt+Δt。
Wherein, the gross energy before reaction can be that the energy sum of all components of the material subtracts solid inert material
Energy.
Specifically, in the rubbish handled by plasma gasification stove, containing many solid inert materials, before and after reaction not
Chemical reaction is participated in, the change of a temperature is simply undergone in whole process, the amount of its material also keeps constant.For this part
Inert substance, its energy variation expression formula are as follows：
Qs=cm (T-T0)+mΛ。
Wherein, QsRepresent solid inert material from initial temperature T0It is increased to the heat of required absorption during temperature T, unit
It is kJ；C represents the specific heat capacity of solid inert material, and unit is kJ/ (kg DEG C)；M represents the quality of solid inert material, unit
It is kg；Λ is the heat of fusion of solid inert material, i.e., the heat of required absorption when the solid melts of unit mass are into liquid is single
Position is kJ/kg.
It is understood that initial temperature T therein0The temperature before gasification, exemplarily, T can be referred to0Room temperature can be equal to, such as
25℃。
So as to which before the reaction takes place, the gross energy of material is in t+ time Δt reactors：
Wherein, G0,t+ΔtBefore representing that reaction occurs, the gross energy of material, unit are kJ in t+ time Δt reactors；Gt
Represent the gross energy in material described in t；Fin,tRepresent component i molar flow；Gi,tRepresent t component i's
Gibbs free energys, unit are kJ/mol；QhThe extraneous heat provided is represented, unit is kJ/s, if heat loss, it is negative value.
It can be seen that the Dynamic Balance Model considers the energy variation of solid inert material, for solids such as flying dust and lime-ash
The very high rubbish of content, discounting for the energy variation of solid inert material, very large deviation can be produced to result.Therefore, should
The temperature and its product component of plasma gasification stove can be more accurately predicted in model.
Based on energy conservation principle, the gross energy for reacting front and rear in theory should be equal.In view of some errors, in S104
In, subsequent treatment can be carried out according to both differences.
Exemplarily, in S104, the energy balance model that can establish in gasification furnace is expressed as：
Δ H=| Gt+Δt-G0,t+Δt|。
Specifically, can be according to the gross energy before reaction and the absolute value delta H of the difference of reacted gross energy with presetting
Error value epsilon between relation, judge assume temperature it is whether correct.
S104 can include：If the absolute value of the difference is more than or equal to default error amount, re-execute
State described method；If the absolute value of the difference is less than the default error amount, export the temperature of the hypothesis with
And the component and content of the material.
That is, for the error value epsilon of setting, if Δ H >=ε, return to S101 and re-execute, as shown in Fig. 2 i.e.
Again assume another temperature, judged., can be by component determined by the S101 temperature assumed and S102 if Δ H ＜ ε
Exported with content.
The model of the embodiment of the present invention uses dynamic equilibrium modeling method, it is contemplated that material is continuously added to whole system
Influence, suitable for batch reactor (feed rate 0) and flow reactor.The material predicted by the embodiment of the present invention
Component and content can specifically may be referred to the component of the material of the output as the reference of gasification furnace technological design and contain
Operating power of amount design gasification furnace etc..
Analyzed based on more than, the component in plasma refuse gasification boiler is very more, and reaction is extremely complex, using the dynamic
Balance model, temperature, product component and the content of plasma refuse gasification boiler can be best appreciated.The model is not only
Gas phase reaction and its energy variation are considered, also takes into account the energy variation of solid inert material.For plasma gas
Change the very high rubbish of the stove processing solids content such as flying dust and lime-ash, solid inert material accounts for very big ratio, do not consider that solid is lazy
Property material can produce very large deviation, therefore the temperature and its product of plasma gasification stove can be more accurately predicted in the model
Component.
In addition, the embodiment of the present invention additionally provides a kind of plasma refuse gasification boiler, including memory, processor and deposit
Store up on the memory and the computer program that runs on the processor, realize during computing device described program foregoing
Shown in Fig. 1 or Fig. 2 the step of method.
In addition, the embodiment of the present invention additionally provides a kind of computer-readable storage medium, computer program is stored thereon with.Work as institute
When stating computer program by computing device, it is possible to achieve shown in earlier figures 1 or Fig. 2 the step of method.For example, the computer is deposited
Storage media is computer-readable recording medium.
As can be seen here, the comparison of gross energy, the temperature of output-response and the group of material before and after the embodiment of the present invention is reacted
Part and content, can be as the reference of gasification furnace technological design, for example, the operating power of gasification furnace can be designed based on the output
Deng.
Although describe example embodiment by reference to accompanying drawing here, it should be understood that above-mentioned example embodiment is merely exemplary
, and be not intended to limit the scope of the invention to this.Those of ordinary skill in the art can carry out various changes wherein
And modification, it is made without departing from the scope of the present invention and spiritual.All such changes and modifications are intended to be included in appended claims
Within required the scope of the present invention.
In the specification that this place provides, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice in the case of these no details.In some instances, known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Mode it can use in any combination.
The foregoing is only a specific embodiment of the invention or the explanation to embodiment, protection of the invention
Scope is not limited thereto, any one skilled in the art the invention discloses technical scope in, can be easily
Expect change or replacement, should all be included within the scope of the present invention.Protection scope of the present invention should be with claim
Protection domain is defined.
Claims (7)
- A kind of 1. processing method of plasma refuse gasification boiler, it is characterised in that including：In the case of assuming that the temperature in plasma refuse gasification boiler is T, the gibbs of the system of the gasification furnace is calculated Free energy；Based on minimization of Gibbs free energy principle, the component and content of material in the gasification furnace are determined；The component and content of the material according to the gasification furnace, after calculating system gross energy before the reaction and reaction Gross energy；According to the difference of the gross energy before the reaction and the reacted gross energy, whether just the temperature of the hypothesis is judged Really.
- 2. processing method according to claim 1, it is characterised in that also include：If the absolute value of the difference is more than or equal to default error amount, the processing method is re-executed；If the absolute value of the difference is less than the default error amount, the temperature of the hypothesis and the material are exported Component and content.
- 3. processing method according to claim 1, it is characterised in that gross energy before the reaction for the material institute The energy sum for having component subtracts the energy of solid inert material.
- 4. processing method according to claim 3, it is characterised in that the energy of the solid inert material is expressed as：Qs=cm (T-T0)+m Λ,Wherein, c represents the specific heat capacity of the solid inert material, and m represents the quality of the solid inert material, described in Λ is represented The heat of solution of solid inert material, T0Represent initial temperature.
- 5. processing method according to claim 3, it is characterised in that the gross energy before the reaction is expressed as：<mrow> <msub> <mi>G</mi> <mrow> <mn>0</mn> <mo>,</mo> <mi>t</mi> <mo>+</mo> <mi>&Delta;</mi> <mi>t</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>G</mi> <mi>t</mi> </msub> <mo>+</mo> <mi>&Delta;</mi> <mi>t</mi> <mo>&CenterDot;</mo> <mrow> <mo>(</mo> <munder> <mo>&Sigma;</mo> <mi>i</mi> </munder> <msub> <mi>F</mi> <mrow> <mi>i</mi> <mi>n</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <msub> <mi>G</mi> <mrow> <mi>i</mi> <mo>,</mo> <mi>t</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>Q</mi> <mi>h</mi> </msub> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mi>Q</mi> <mi>s</mi> </msub> <mo>,</mo> </mrow>Wherein, GtRepresent the gross energy in material described in t, Fin,tRepresent component i molar flow, Gi,tRepresent in t Component i Gibbs free energy, QhThe extraneous heat provided, Q are providedsRepresent the energy of the solid inert material.
- 6. a kind of plasma refuse gasification boiler, including memory, processor and it is stored on the memory and at the place The computer program run on reason device, it is characterised in that realized during the computing device described program in claim 1 to 5 The step of any one methods described.
- 7. a kind of computer-readable storage medium, is stored thereon with computer program, it is characterised in that described program is executed by processor Any one of Shi Shixian claims 1 to 5 the step of method.
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| CN108956362A (en) * | 2018-05-18 | 2018-12-07 | 光大环保技术研究院（深圳）有限公司 | A kind of prediction technique of flying dust plasma melting gas-phase product |
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| CN113025390A (en) * | 2021-03-22 | 2021-06-25 | 万华化学集团股份有限公司 | Control method, storage medium and system for automatic load distribution of gasification device |
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| CN108956362A (en) * | 2018-05-18 | 2018-12-07 | 光大环保技术研究院（深圳）有限公司 | A kind of prediction technique of flying dust plasma melting gas-phase product |
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| CN111625941A (en) * | 2020-05-13 | 2020-09-04 | 埃睿迪信息技术（北京）有限公司 | Method and device for determining operation state of incineration production line and storage medium |
| CN111625941B (en) * | 2020-05-13 | 2023-05-26 | 埃睿迪信息技术（北京）有限公司 | Method, device and storage medium for determining the operating state of an incineration line |
| CN113025390A (en) * | 2021-03-22 | 2021-06-25 | 万华化学集团股份有限公司 | Control method, storage medium and system for automatic load distribution of gasification device |
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| CN107391806B (en) | 2020-10-13 |
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