Intelligent gasification batching system and method

文档序号：775537 发布日期：2021-04-09 浏览：42次中文

阅读说明：本技术 智能气化配料系统及方法 (Intelligent gasification batching system and method ) 是由王芳杰王树青王大川夏国富崔龙鹏于 2019-10-31 设计创作，主要内容包括：本发明实施方式提供一种智能气化配料系统及方法,属于煤化工技术领域。系统包括气化配料子系统,气化配料子系统包括：原料性质快速分析模块,用于依据入炉原料的特征谱线强度得到原料的原料性质参数；配料性质预测模块,用于建立预测模型,依据原料性质参数及原料配比,经预测模型预测配料的性质参数；配料方案优化模块,用于建立优化模型,依据配料的性质参数,通过优化模型得到优化后的配料方案；配料方案经济性评价模块,用于输出技术经济性最佳的配料方案。本发明构建了一个具有完整生命周期流程的智能化气化配料系统,实现了气化配料的智能化精准化控制。(The embodiment of the invention provides an intelligent gasification batching system and method, and belongs to the technical field of coal chemical industry. The system includes the gasification batching subsystem, and the gasification batching subsystem includes: the raw material property rapid analysis module is used for obtaining raw material property parameters of the raw materials according to the characteristic spectral line intensity of the raw materials entering the furnace; the ingredient property prediction module is used for establishing a prediction model and predicting the property parameters of ingredients through the prediction model according to the property parameters and the proportion of the raw materials; the batching scheme optimizing module is used for establishing an optimizing model and obtaining an optimized batching scheme through the optimizing model according to the property parameters of batching; and the batching scheme economy evaluation module is used for outputting a batching scheme with the best technical economy. The invention constructs an intelligent gasification batching system with a complete life cycle process and realizes intelligent and accurate control of gasification batching.)

1. An intelligent gasification batching system, comprising:

the gasification batching subsystem comprises a raw material property rapid analysis module, a batching property prediction module, a batching scheme optimization module and a batching scheme economy evaluation module;

the raw material property rapid analysis module is used for receiving the characteristic spectral line intensity of the raw material entering the furnace and obtaining the raw material property parameters of the raw material according to the characteristic spectral line intensity;

the ingredient property prediction module is used for establishing a prediction model, and predicting the property parameters of ingredients through the prediction model according to the property parameters and the ingredient proportion of the ingredients;

the batching scheme optimizing module is used for establishing an optimizing model and obtaining an optimized batching scheme through the optimizing model according to the property parameters of the batching;

and the batching scheme economy evaluation module is used for carrying out technical economy analysis on the optimized batching scheme and outputting the batching scheme with the best technical economy.

2. The intelligent gasification batching system of claim 1, further comprising a raw material property standard subsystem, wherein the raw material property standard subsystem comprises a raw material in-furnace standard management module, and the raw material in-furnace standard management module is used for establishing and storing mapping relations between different types of gasifiers and corresponding raw materials thereof so as to determine raw materials in-furnace after the types of gasifiers are determined.

3. The intelligent gasification batching system of claim 1, wherein said batching material property parameters comprise basic properties, ash fusion characteristics, pulping characteristics and gasification reaction characteristics.

4. The intelligent gasification batching system of claim 3, wherein said fundamental properties comprise industrial analysis parameters, elemental analysis parameters, grindability parameters, and heating value parameters.

5. The intelligent gasification batching system of claim 3, further comprising an information management subsystem comprising a raw material information management module, a gasifier information management module, an additive information management module and a gasification ash information management module;

the raw material information management module is used for storing the raw material property parameters obtained by the raw material property rapid analysis module;

the gasification furnace information management module is used for establishing and storing mapping relations between different types of gasification furnaces and corresponding operation parameters;

the additive information management module is used for establishing and storing a mapping relation between ash fusion characteristics and pulping characteristics prediction and corresponding additives;

the gasification ash information management module is used for establishing and storing the mapping relation among the types, raw materials, gasification furnace operation parameters and ash properties of the gasification furnace in a one-to-one correspondence manner.

6. The intelligent gasification batching system of claim 5, wherein the gasification batching subsystem further comprises a gasifier early warning module, wherein the gasifier early warning module is used for establishing a functional relationship among batching, gasifier operating parameters and ash properties, predicting corresponding ash properties according to the obtained batching of the batching scheme with the best technical economy and the gasifier operating parameters, and judging whether the obtained ash properties are abnormal or not.

7. The intelligent gasification batching system of claim 6, wherein the gasifier early warning module is further configured to compare the obtained ash properties with pre-stored ash properties when the obtained ash properties are judged to be abnormal, and obtain relevant parameters causing the ash properties to be abnormal according to mapping relations between the pre-stored ash properties and gasifier types, raw materials and gasifier operating parameters.

8. An intelligent gasification batching method is characterized by comprising a gasification batching sub-step, wherein the gasification batching sub-step comprises the following steps:

receiving the characteristic spectral line intensity of the raw materials entering the furnace, and obtaining the raw material property parameters of the raw materials according to the characteristic spectral line intensity;

establishing a prediction model, and predicting the property parameters of the ingredients through the prediction model according to the property parameters and the proportion of the raw materials;

establishing an optimization model, and obtaining an optimized batching scheme through the optimization model according to the property parameters of the batching;

and carrying out technical economy analysis on the optimized batching scheme, and outputting the batching scheme with the optimal technical economy.

9. The intelligent gasification batching method as recited in claim 8, further comprising a feedstock properties criteria substep comprising:

and establishing and storing a mapping relation between the gasification furnaces of different types and the corresponding raw materials so as to determine the raw materials to be charged after the types of the gasification furnaces are determined.

10. The intelligent gasification batching method of claim 8, wherein said batching material property parameters comprise basic properties, ash fusion characteristics, pulping characteristics and gasification reaction characteristics.

11. The intelligent gasification batching method of claim 10, wherein the fundamental properties comprise industrial analysis parameters, elemental analysis parameters, grindability parameters, and calorific value parameters.

12. The intelligent gasification batching method as recited in claim 10, further comprising an information management sub-step comprising:

storing the raw material property parameters obtained by the raw material property rapid analysis module;

establishing and storing mapping relations between different types of gasification furnaces and corresponding operation parameters;

establishing and storing a mapping relation between ash fusion characteristics and pulping characteristics predictions and corresponding additives;

and establishing and storing mapping relations among the types, raw materials, gasifier operation parameters and ash properties of the gasifier in a one-to-one correspondence manner.

13. The intelligent gasification batching method as recited in claim 12, wherein said gasification batching substep further comprises:

and establishing a functional relation among the ingredients, the gasifier operation parameters and the ash properties, predicting the corresponding ash properties according to the obtained ingredients of the optimal technical and economic ingredients scheme and the gasifier operation parameters, and judging whether the obtained ash properties are abnormal.

14. The intelligent gasification batching method as recited in claim 13, wherein said gasification batching substep further comprises:

and when the obtained ash property is abnormal, comparing the obtained ash property with the prestored ash property, and obtaining related parameters causing the ash property abnormality according to the prestored ash property and the mapping relation among the gasifier type, the raw materials and the gasifier operation parameters.

Technical Field

The invention relates to the technical field of coal chemical industry, in particular to an intelligent gasification batching system and an intelligent gasification batching method.

Background

The stable operation of the gasification furnace is one of the key economic targets pursued by coal chemical enterprises, and the gasification furnace has certain operating conditions and has strict limits on the characteristics of raw materials entering the furnace. In the actual production of the coal chemical industry enterprises, the following problems may exist: firstly, coal quality near the project is not suitable for the gasification furnace and cannot be applied on site; secondly, the coal quality fluctuation is large, and the gasification furnace cannot stably operate for a long period; thirdly, the existing coal supply has problems or large price fluctuation, thereby causing the gasification furnace to have unstable operation and the consequences of corrosion, slag blockage, even stopping and the like. The problems can be effectively solved through a coal blending technology, local application of coal nearby projects is realized, and the cost is reduced; the long-period stable operation of the gasification furnace is ensured, and the benefit is increased; the flexibility of the coal used for the project is improved, and the risk is reduced. The traditional coal blending is mainly completed by carrying out a large number of complicated condition experiments by experimenters of scientific research units or long-term accumulated operation experiences of related workers of factories, so that the problems of low efficiency and poor accuracy exist, and the optimal coal blending proportion of the gasification furnace cannot be effectively obtained. Meanwhile, the gasification technology is developed, popularized and applied in large scale in China, coal is not the only gasification raw material any more, and various carbon-containing compounds are adopted to be blended to serve as the gasification raw material, so that the important development trend of the gasification technology is achieved, and therefore, an intelligent gasification batching system capable of constructing a batching scheme and having a full life cycle is needed to be developed.

Disclosure of Invention

The embodiment of the invention aims to provide an intelligent gasification batching system and an intelligent gasification batching method, so as to solve the problems that the traditional coal blending technology is low in efficiency and poor in accuracy, and a full life cycle process of a coal blending scheme cannot be constructed.

To achieve the above object, in a first aspect of the present invention, there is provided an intelligent gasification batching system, comprising:

the ingredient property prediction module is used for establishing a prediction model and predicting the property parameters of ingredients through the prediction model according to the material property parameters and the preset mixture ratio;

the batching scheme optimizing module is used for establishing an optimizing model and obtaining an optimized batching scheme through the objective function according to the property parameters of the batching;

Optionally, the system further includes a raw material property standard subsystem, where the raw material property standard subsystem includes a raw material to be charged standard management module, and the raw material to be charged standard management module is configured to establish and store a mapping relationship between different types of gasifiers and corresponding raw materials thereof, so as to determine a raw material to be charged after the type of gasifier is determined.

Optionally, the property parameters of the furnish include a base property, ash fusion characteristics, pulping characteristics, and gasification reaction characteristics.

Optionally, the base property includes an industrial analysis parameter, an elemental analysis parameter, a grindability parameter, and a calorific value parameter.

Optionally, the system further comprises an information management subsystem, wherein the information management subsystem comprises a raw material information management module, a gasification furnace information management module, an additive information management module and a gasification ash information management module;

the raw material information management module is used for storing the raw material property parameters obtained by the raw material property rapid analysis module;

the gasification furnace information management module is used for establishing and storing mapping relations between different types of gasification furnaces and corresponding operation parameters;

Optionally, the gasification batching subsystem further comprises a gasifier early warning module, and the gasifier early warning module is configured to establish a functional relationship among the batching, the gasifier operating parameters, and the ash properties, predict the corresponding ash properties according to the obtained batching of the batching scheme with the best technical economy and the gasifier operating parameters, and determine whether the obtained ash properties are abnormal.

Optionally, the gasifier early warning module is further configured to compare the obtained ash property with a pre-stored ash property when the obtained ash property is judged to be abnormal, and obtain a relevant parameter causing the ash property to be abnormal according to a mapping relationship between the pre-stored ash property and a type, a raw material and gasifier operation parameters of the gasifier.

In a second aspect of the present invention, there is provided an intelligent gasification batching method, comprising a gasification batching sub-step, the gasification batching sub-step comprising:

establishing a prediction model, and predicting the property parameters of the ingredients through the prediction model according to the property parameters and the proportion of the raw materials;

establishing an optimization model, and obtaining an optimized batching scheme through the optimization model according to the property parameters of the batching;

and carrying out technical economy analysis on the optimized batching scheme, and outputting the batching scheme with the optimal technical economy.

Optionally, the method further comprises a feedstock properties criteria substep comprising:

Optionally, the property parameters of the furnish include a base property, ash fusion characteristics, pulping characteristics, and gasification reaction characteristics.

Optionally, the base property includes an industrial analysis parameter, an elemental analysis parameter, a grindability parameter, and a calorific value parameter.

Optionally, the method further comprises an information management sub-step comprising:

storing the raw material property parameters obtained by the raw material property rapid analysis module;

establishing and storing mapping relations between different types of gasification furnaces and corresponding operation parameters;

establishing and storing a mapping relation between ash fusion characteristics and pulping characteristics predictions and corresponding additives;

and establishing and storing mapping relations among the types, raw materials, gasifier operation parameters and ash properties of the gasifier in a one-to-one correspondence manner.

Optionally, the gasification batching sub-step further comprises:

Optionally, the gasification batching sub-step further comprises: and when the obtained ash property is abnormal, comparing the obtained ash property with the prestored ash property, and obtaining related parameters causing the ash property abnormality according to the prestored ash property and the mapping relation among the gasifier type, the raw materials and the gasifier operation parameters.

According to the technical scheme, the raw material property parameters are obtained by quickly analyzing the raw material, the prediction of the batching property parameters is realized through the established prediction model according to the obtained raw material property parameters, the batching scheme is optimized through the established objective function according to the obtained batching property parameters, and the optimized batching scheme is subjected to technical economy analysis, so that the optimal batching scheme is obtained, an intelligent gasification batching system with a complete life cycle process is constructed, the coal batching efficiency and accuracy are effectively improved, the intelligent and accurate control of gasification batching is realized, and the adverse effect of the raw material property problem on enterprises can be effectively reduced.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

FIG. 1 is a schematic diagram of a system architecture of an intelligent gasification batching system according to an embodiment of the present invention;

FIG. 2 is a flow chart of the system operation of an intelligent gasification batching system according to an embodiment of the present invention;

FIG. 3 is a flow chart of a method for intelligent gasification dosing according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

As shown in fig. 1 and 2, in a first aspect of the present invention, there is provided an intelligent gasification batching system, comprising:

the raw material property rapid analysis module is used for receiving the characteristic spectral line intensity of the raw material entering the furnace and obtaining raw material property parameters of the raw material according to the characteristic spectral line intensity;

Therefore, according to the technical scheme of the embodiment, the raw material property parameters are obtained by rapidly analyzing the raw material, the prediction of the blending property parameters is realized through the established prediction model according to the obtained raw material property parameters and the preset raw material ratio, the blending scheme is optimized through the established optimization model according to the obtained blending property parameters, and the optimized blending scheme is subjected to technical economy analysis, so that the optimal blending scheme is obtained, an intelligent gasification blending system with a complete life cycle process is constructed, the coal blending efficiency and accuracy are effectively improved, the intelligent accurate control of gasification blending is realized by establishing the coal blending coal quality prediction model through the computer technology, and the adverse effect of the raw material property problem on enterprises can be effectively reduced.

Specifically, the stable operation of the gasification furnace is closely related to the properties of the raw materials entering the furnace, so that the gasification furnace needs to be strictly limited to keep stable operation, different individual raw materials have different characteristics and meet the gasification requirement, the raw materials entering the furnace are often formed by mixing multiple individual raw materials, and the scheme of blending the raw materials entering the furnace is particularly important. Because the existing off-line analysis commonly adopted for analyzing the components of coal has the defects of low analysis speed, complicated process and the like, cannot provide real-time on-line reference data for operators, and is difficult to adapt to the requirements of industrial production, the embodiment adopts the laser induced plasma spectroscopy technology (LIBS) to obtain the characteristic spectral line intensity of a sample to be detected, the laser induced plasma spectroscopy technology means that when strong pulse laser is focused and irradiated on the sample, the sample can be instantly gasified into high-temperature and high-density plasma, the plasma in an excited state can externally release different rays, the wavelengths and the intensities corresponding to the plasma emission spectral lines respectively reflect the constituent elements and the concentration of the constituent elements in the detected object, the LIBS has the advantages of high detection speed, high sensitivity, low cost and capability of analyzing various elements simultaneously, the raw material property rapid analysis module receives the characteristic spectral line intensity of the raw material to be detected obtained by the LIBS detector, calculating and analyzing the characteristic spectral line intensity by using the existing special algorithm, such as a spectral standardization algorithm and a self-absorption correction algorithm, obtaining the material property parameters of the raw material to be detected, and respectively detecting the individual raw materials so as to obtain the property parameters of each individual raw material. Wherein the material property parameters comprise carbon, hydrogen, sulfur, ash content, volatile matter and calorific value.

The ingredient property prediction module establishes a prediction model taking the property parameters and the mixture ratio of the single raw materials as input and the property parameters of the ingredients as output. Wherein the property parameters of the ingredients comprise basic property, ash fusion property, pulping property and gasification reaction property; the basic properties include industrial analysis parameters, elemental analysis parameters, grindability parameters, and calorific value parameters. In this embodiment, the ingredient property prediction module predicts the basic property, the ash fusion property, the pulping property and the gasification reaction property of the ingredient by establishing a basic property prediction model, an ash fusion property prediction model, a pulping property prediction model and a gasification reaction property prediction model, respectively, wherein the basic property prediction model is established based on a linear weighting and algorithm, the ash fusion property prediction model, the pulping property prediction model and the gasification reaction property prediction model are established based on a BP neural network, the prediction models are not limited to the above algorithm, and may also be established based on other algorithms, such as a convolutional neural network and the like

The batching scheme optimizing module establishes an objective function according to the requirement on the batching scheme, the objective function can be one or more, and the obtained feasible batching scheme can be more. For example, the objective function can be established according to the requirements of lowest price of ingredients, highest calorific value or best environmental protection property. Determining a constraint condition which needs to be met by the gasification burdening, wherein the constraint condition refers to a limit condition when an extreme value of an objective function is required, and the constraint condition of the embodiment is the requirement of the gasification furnace on the burdening, namely the property parameter requirement of the gasification furnace on the burdening and the variation range of related property parameters. The method comprises the steps of obtaining a ratio function relation between the property parameters of the single raw materials and the raw materials through a batching property prediction module, obtaining the upper limit and the lower limit of the change range of the gasifier on the property parameters of the raw materials so as to obtain the constraint conditions of an objective function, and establishing an optimization model by considering the obtained constraint conditions according to the established objective function.

On one hand, the batching scheme economy evaluation module can perform technical economy analysis on all the obtained optimized feasible batching schemes by calling process simulation software, and preferably selects a scheme with a proper product structure and good economy as an optimal batching scheme according to a preset target, so that real-time online batching proportion adjustment is realized; on the other hand, the optimal effect of the product structure and the economical efficiency is realized by adjusting the operation parameters of the gasification furnace, and the operation stability is ensured. The technical economy analysis of the feasible batching scheme can be analyzed according to actual requirements based on gasification process conditions such as feed quantity, oxygen flow, additive amount, gasification temperature, gasification pressure and carbon conversion rate, and the composition and raw material cost of the synthesis gas are used as judgment standards.

In this embodiment, the system further includes a raw material property standard subsystem, where the raw material property standard subsystem includes a raw material to be charged standard management module, and the raw material to be charged standard management module is configured to establish and store a mapping relationship between different types of gasifiers and corresponding raw materials thereof, so as to determine a raw material to be charged after the types of gasifiers are determined. Because the different kinds of gasification furnaces have different requirements on the raw materials to be fed into the furnaces, for example, the gasification furnaces have different requirements on the components, the proportion, the heat productivity and the like of the raw materials to be fed into the furnaces, the raw materials to be fed into the furnaces must meet the requirements of the gasification furnaces on the raw materials to ensure that the gasification furnaces stably run, the standard management module of the raw materials to be fed into the furnaces is used for establishing and storing the mapping relation between the different kinds of gasification furnaces and the corresponding raw materials to be fed into the furnaces in advance, the method is favorable for quickly calling the raw material requirements corresponding to the selected gasification furnaces to perform subsequent steps when the batching scheme of the raw materials to be fed into the furnaces is predicted, meanwhile, the switching among the different.

The system of the embodiment also comprises an information management subsystem, wherein the information management subsystem comprises a raw material information management module, a gasification furnace information management module, an additive information management module and a gasification ash slag information management module;

the raw material information management module is used for storing the raw material property parameters obtained by the raw material property rapid analysis module;

the gasification furnace information management module is used for establishing and storing mapping relations between different types of gasification furnaces and corresponding operation parameters;

Specifically, after the raw material property parameter is obtained by predicting by the raw material property rapid analysis module each time, the obtained raw material property parameter is stored in the raw material information management module so as to be convenient for inquiry and calling. Because the operation parameters of different types of gasification furnaces are different, the gasification furnaces need to be adjusted strictly according to the operation parameters of the different types of gasification furnaces, and the mapping relation between each type of gasification furnace and the corresponding operation parameter is pre-established and stored through the gasification furnace information management module, so that the operation parameters of the corresponding gasification furnaces are called after the optimal batching scheme is obtained by the batching scheme economy evaluation module, and the operation parameters of the gasification furnaces are adjusted to ensure the stable operation of the gasification furnaces.

Due to the fact that proper additives need to be added to input raw materials in the process of predicting the ash fusion characteristics through the ash fusion characteristic prediction model and predicting the pulping characteristics through the pulping characteristic prediction model, the mapping relation between the ash fusion characteristics and the pulping characteristics prediction and the corresponding additives is established and stored in the additive information management module in advance, and therefore the additives can be called accurately and quickly when the ash fusion prediction and the pulping characteristics prediction are carried out.

In a coal gas chemical engineering project, coal gasification ash occupies an important proportion of solid waste, the coal gasification ash comprises two parts of coarse slag and fine slag, ash components are related to the content and the composition of coal ash of a gasification raw material, a gasification process and the like, mainly comprise SiO2, Al2O3, CaO, residual carbon and the like, and whether the raw material entering a gasification furnace, operation parameters and the like meet requirements or not can be judged through the components of the gasification ash. The method comprises the steps of establishing and storing ash properties obtained by different raw materials under different gasifier operation parameters in a gasification ash information management module in advance to obtain one-to-one mapping relations among the types, the raw materials, the gasifier operation parameters and the ash properties of a gasifier, so that whether the obtained gasification ash is abnormal or not can be judged by calling the prestored ash properties, and the reason for the abnormality can be diagnosed according to the mapping relations.

In order to ensure the stable operation of the gasification furnace, the gasification batching subsystem of the embodiment further comprises a gasification furnace early warning module, wherein the gasification furnace early warning module is used for establishing a functional relation among batching, gasification furnace operation parameters and ash properties, predicting corresponding ash properties according to the obtained batching of the batching scheme with the best technical economy and the gasification furnace operation parameters, and judging whether the obtained ash properties are abnormal or not. The gasification furnace early warning module establishes an ash property prediction model based on a BP neural network but not limited to the BP neural network, a batching scheme obtained by a batching scheme optimization module is received, corresponding ash properties are obtained through the ash property prediction model prediction according to batching of the batching scheme and corresponding gasification furnace operation parameters, the ash properties are matched and compared through calling a mapping relation in a gasification ash information management module, whether the ash properties are abnormal or not is judged according to a comparison result, when the obtained ash properties are abnormal, an alarm is given, the gasification furnace early warning module compares the obtained ash properties with the matched pre-stored ash properties, and related parameters causing the ash properties to be abnormal are obtained according to the pre-stored ash properties and the mapping relation among the gasification furnace types, raw materials and the gasification furnace operation parameters, so that the gasification process is diagnosed, and finding out a problem source. And if the obtained ash property is abnormal, adjusting the proportion of the single raw materials according to the suboptimal solution obtained by the batching scheme optimization module, updating the proportion through the batching property prediction module, repeatedly predicting the property parameters of the batching, obtaining the optimized batching scheme, carrying out technical economy evaluation, and outputting the optimal batching scheme and the process of ash property prediction and diagnosis until the batching scheme with the optimal ash property is obtained.

The present embodiment is illustrated by specific data below:

determining the gasification furnace as a GE water-coal-slurry gasification furnace, calling the GE water-coal-slurry gasification furnace through a furnace-entering raw material standard management module to meet the requirements of the furnace-entering raw material that the calorific value is more than 25.12MJ/kg, the internal water content is less than or equal to 8 percent, the coal slurry concentration is more than or equal to 60 percent, the apparent viscosity is less than or equal to 1500mPa & s, the ash content is less than or equal to 13 percent, and. According to the requirements and the field conditions of the GE coal water slurry gasification furnace on the raw materials to be fed into the furnace, the raw materials to be fed into the furnace are determined to be mixed by one kind of coal and one kind of semi-coking coal, and the two kinds of independent raw materials are subjected to raw material property analysis by a raw material property rapid analysis module to obtain the property parameters of the raw materials, wherein the property parameters of the raw materials comprise the contents of carbon, hydrogen, sulfur and ash forming elements, ash content, volatile matters and calorific value. The basic properties, ash fusion characteristics, slurrying characteristics and gasification reaction characteristics of the raw materials were obtained by field experiments, and the basic properties and ash fusion characteristics of coal and semi-coke coal are shown in table 1, the slurrying characteristics of coal and semi-coke coal are shown in table 2, and the gasification reaction characteristics of coal and semi-coke coal are shown in table 3.

TABLE 1

TABLE 2

TABLE 3

The material distribution property prediction module establishes a basic property prediction model based on linear weighting and an algorithm, establishes an ash fusion property prediction model, a pulping property prediction model and a gasification reaction property prediction model based on a BP neural network, and trains the BP neural network by calling a raw material property parameter generation data set stored in a raw material information management module, wherein the BP neural network is of a three-layer network structure, an input layer is of single raw material property parameters and proportion, an output layer is of material distribution property parameters, an error back propagation algorithm is adopted to optimize weight and a threshold of the BP neural network, neurons in an implicit layer mostly adopt an S-shaped transfer function tansig, and neurons in the output layer mostly adopt a linear transfer function purelin. And (3) taking the property parameters of the raw materials as input, and predicting the property parameters of the ingredients through a basic property prediction model, an ash fusion property prediction model, a pulping property prediction model and a gasification reaction property prediction model respectively.

In the embodiment, the lowest batching price is taken as a target, and a target function is established through a batching scheme economy evaluation module:

minP＝500X₁+200X₂，

wherein the prices of the coal and the semi-coke powder are respectively 500 yuan/ton and 200 yuan/ton, and the constraint conditions for determining the objective function are as follows:

the mixing proportion of the semi-coke powder is more than or equal to X and is more than or equal to 0₂≤5％，

Heating value of ingredient

Calorific power constraint Q_net,ad,X≥25.12，

Melting property of the batch ash:

FT_X＝f_FT(SiO₂,Al₂O₃,CaO,Fe₂O₃,MgO,Na₂O,TiO₂,SO₃)，

the ash meltability constraint FT is less than or equal to 1300,

ash content of burden

Ash content constraint A_ad,X≤13，

Ingredient moisture

Moisture restraint M_ad,X≤8，

Pulping property of ingredients D_X＝f_D(M_ad,HGI,O_ad)，

Batch gasification reactivity R_X＝f_R(C_d,A_d,CaO,Fe₂O₃,MgO,Na₂O,V_daf,S_BET)，

Wherein M is_adInternal Water content, HGI grindability index, O_adIs the oxygen content, C_dIs the carbon content, A_dAsh content, CaO, Fe₂O₃MgO and Na₂O represents the content of the oxide, V_dafDenotes the volatile content, S_BETRepresents a specific surface area.

Taking an objective function and a constraint condition as input, taking the ratio as output, and solving the optimal coal blending ratio through an optimization model established based on a genetic algorithm as follows: 97% of coal and 3% of semi-coke powder, and the price is 491 yuan/ton. The genetic algorithm generally converts the constrained problem into the unconstrained problem through a penalty function method, in the embodiment, the material property parameters are taken as individuals of the population, the population is divided into a plurality of sub-populations, and the optimal solution is obtained through the cyclic operation of selection, intersection and variation according to the fitness value of the individuals, the genetic algorithm is the prior art, and the specific process of the genetic algorithm is not repeated here.

And calling flow simulation software through the batching scheme economy evaluation module to perform gasification simulation and technical economy evaluation on the obtained batching scheme, wherein the gasification simulation is shown in a table 4, and the technical economy evaluation is shown in a table 5.

TABLE 4

TABLE 5

And judging whether the current batching scheme meets the economic evaluation requirement, if so, taking the current batching scheme as the optimal batching scheme, otherwise, carrying out economic evaluation on the alternative feasible batching scheme until the optimal batching scheme is obtained, wherein the alternative feasible batching scheme is a suboptimal scheme output by the objective function. The obtained ash property is predicted through the gasification furnace early warning module, the obtained ash property is matched and compared through calling the mapping relation in the gasification ash information management module, the gasification furnace early warning module sends out warning information that the carbon residue of coarse slag and fine slag reaches the upper limit, and an operator compares the batching scheme through calling the raw material property parameters in the raw material information management module and the ash property mapping relation prestored in the gasification ash information management module so as to diagnose batching, for example, in the embodiment, the coal gasification reactivity used for batching is found to be lower through comparison, and diagnosing the possible reason of the high carbon content of the gasification residues, updating the proportion of the single raw materials through the batching property prediction module, reducing the proportion of the coal in the batching, and repeating the process until the problem of the high carbon content of the gasification residues is finally solved to obtain the optimal batching scheme.

As shown in fig. 3, in a second aspect of the present invention, there is provided an intelligent gasification batching method, comprising a gasification batching sub-step, wherein the gasification batching sub-step comprises: