WO2025256328A1 - 一种确定动力用煤挥发分的方法及系统 - Google Patents
一种确定动力用煤挥发分的方法及系统Info
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- WO2025256328A1 WO2025256328A1 PCT/CN2025/094750 CN2025094750W WO2025256328A1 WO 2025256328 A1 WO2025256328 A1 WO 2025256328A1 CN 2025094750 W CN2025094750 W CN 2025094750W WO 2025256328 A1 WO2025256328 A1 WO 2025256328A1
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- daf
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- dry ash
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/20—Identification of molecular entities, parts thereof or of chemical compositions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C20/00—Chemoinformatics, i.e. ICT specially adapted for the handling of physicochemical or structural data of chemical particles, elements, compounds or mixtures
- G16C20/70—Machine learning, data mining or chemometrics
Definitions
- This application belongs to the field of coal quality technology for power coal, specifically relating to a method and system for determining the volatile matter content of power coal.
- Thermal coal also known as power coal, is coal used to generate power and heat. It mainly includes non-caking coal, long-flame coal, lignite, anthracite, lean coal, weakly caking coal, natural coke, and some unclassified coal types. In terms of marketable coal, it mainly includes washed mixed coal, washed middlings coal, pulverized coal, and fine coal. The quality requirements for thermal coal are relatively lower than those for other types of coal, but to ensure economic efficiency and environmental protection, it still needs to meet certain standards.
- Thermal power plants are the main users of coal for power generation, accounting for more than 70% of the total consumption of coal for power generation.
- Coal is one of the main energy sources for locomotive propulsion, especially for coal transport locomotives.
- An online moisture analyzer is an instrument capable of real-time monitoring of the moisture content of materials.
- the working principle of an online moisture analyzer is based on various scientific and technological methods, the most common being infrared spectroscopy.
- the principle of infrared light absorption states that the molecular structure within a substance (such as the oxygen-hydrogen bonds in water) absorbs near-infrared light of specific wavelengths.
- Online moisture analyzers utilize this principle to analyze changes in near-infrared energy at a specific wavelength, thereby determining the moisture content of the material. Specifically, when water molecules encounter a specific energy band, they vibrate. These vibrations involve the stretching, twisting, and other deformations of the bonds between the two hydrogen atoms and oxygen atoms in the water molecule.
- the external energy needs to cover a specific band of the entire electromagnetic spectrum.
- water molecules absorb specific wavelengths particularly strongly, and the instrument is also more adept at emitting, filtering, and receiving this energy. Therefore, by measuring the degree of absorption of a material by a specific wavelength of infrared light, its moisture content can be determined.
- An online ash analyzer is a device designed based on modern analytical and sensor technologies, capable of measuring the ash content in solid fuels such as coal in real time and continuously. Online ash analyzers employ various working principles, but they typically measure ash content based on the physical or chemical properties of the material.
- Online sulfur analyzers are mainly used for real-time monitoring and control of sulfur content in various materials (such as coal, oil, and natural gas). They employ advanced detection technologies, such as X-ray fluorescence, infrared spectroscopy, and ultraviolet spectroscopy, to achieve rapid and accurate measurement of sulfur content in materials.
- Online elemental analyzers primarily utilize physical or chemical methods, such as neutron activation, X-ray measurement, and spectral analysis, to measure the elemental content of samples in real time. They can be used to study the elemental composition and content of energy substances such as fuels, coal, and petroleum, helping to optimize energy utilization and reduce environmental pollution.
- the purpose of this application is to overcome the problem of low accuracy in existing online coal quality detection and to provide a method and system for determining the volatile matter content of power coal, which is applicable to anthracite, lean coal, bituminous coal and lignite.
- a method for determining the volatile matter content of power coal includes:
- the range of dry ash-free volatile matter is determined based on dry ash-free carbon and dry ash-free hydrogen;
- the dry ash-free volatile matter of the coal to be tested is calculated.
- a further improvement of this application is that, based on the determined dry ash-free range and combined with the basic coal quality test data of the coal to be tested, the dry ash-free volatile matter of the coal to be tested is calculated, including:
- V daf j 0.12 ⁇ M t -0.02 ⁇ A ar -0.63 ⁇ C daf +1.12 ⁇ H daf +62.18;
- V daf j -0.90 ⁇ M t -0.45 ⁇ A ar -1.08 ⁇ C daf -8.10 ⁇ H daf +160.79;
- V daf j -0.02 ⁇ M t -0.08 ⁇ A ar -0.33 ⁇ C daf -0.07 ⁇ H daf +56.46;
- V daf j 0.11 ⁇ M t -0.10 ⁇ A ar -1.34 ⁇ C daf +4.09 ⁇ H daf +121.39;
- V daf j -0.11 ⁇ M t -0.16 ⁇ A ar -1.34 ⁇ C daf +6.48 ⁇ H daf +116.84;
- V daf j 0.21 ⁇ M t -0.01 ⁇ A ar -0.64 ⁇ C daf +4.12 ⁇ H daf +68.91;
- Vdaf is the dry ash-free volatile matter range
- Vdafj is the dry ash-free volatile matter quantitative value
- Mt is the total moisture
- Aar is the ash content on the received basis
- Cdaf is the dry ash-free carbon
- Hdaf is the dry ash-free hydrogen, all in percentage.
- a further improvement of this application is that when 3% ⁇ V daf ⁇ 12%, C daf ⁇ 89% and H daf ⁇ 4%.
- a further improvement of this application is that when 12% ⁇ V daf ⁇ 22%, C daf ⁇ 86%, H daf ⁇ 4.4%, and A ar ⁇ 35%.
- a further improvement of this application is that when 22% ⁇ V daf ⁇ 28%, C daf ⁇ 85% and H daf ⁇ 4.2%, or C daf ⁇ 80% and H daf ⁇ 4.6%.
- a further improvement of this application is that when 40% ⁇ V daf ⁇ 50%, C daf ⁇ 77%, or H daf ⁇ 5%.
- a further improvement of this application is that when 60% ⁇ V daf ⁇ 70%, C daf ⁇ 70% and H daf ⁇ 5.5%;
- This application also provides a system for determining the volatile matter content of thermal coal, comprising:
- the data acquisition module is used to acquire basic coal quality test data of the coal to be tested, including: total moisture, as-received ash, dry ash-free carbon, and dry ash-free hydrogen.
- the data analysis module is used to determine the range of dry ash-free volatile matter based on dry ash-free carbon and dry ash-free hydrogen;
- the calculation module is used to calculate the dry ash-free volatile matter of the coal to be tested based on the determined range of dry ash-free volatile matter and the basic coal quality test data of the coal to be tested.
- this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for determining the volatile matter content of power coal.
- This application provides a method and system for determining the volatile matter content of power coal.
- the volatile matter content of the power coal is obtained based on industrial and elemental analysis.
- the range of dry ash-free carbon and hydrogen is determined based on dry ash-free carbon and hydrogen.
- the dry ash-free volatile matter content is calculated.
- This method is simple and rapid. Compared with existing methods, this application has high calculation accuracy.
- This application statistically analyzed 110 data points, covering anthracite, lean coal, bituminous coal, and lignite. The average absolute deviation between the V ⁇ sub>daf ⁇ /sub> obtained by this application and the measured value is 1.57%.
- this application has high engineering application value.
- This application can be used in online coal quality testing systems and can also be used for verifying the volatile matter content of online coal quality testing results.
- this application can also be used to guide the daily operation of power plants and the coal blending and combustion of smart power plants, and can guide operators to optimize operating parameters in a timely manner, thereby greatly improving the safety and economy of boiler operation.
- Figure 1 is a flowchart of a method for determining the volatile matter in power coal according to this application.
- Figure 2 is a structural block diagram of a system for determining the volatile matter content of power coal according to this application.
- this embodiment provides a method for determining the volatile matter content of power coal. This method is applicable to anthracite, lean coal, bituminous coal, and lignite, including:
- the range of dry ash-free is determined based on dry ash-free carbon and dry ash-free hydrogen;
- the dry ash-free volatile matter of the coal to be tested is calculated.
- V daf j 0.12 ⁇ M t - 0.02 ⁇ A ar - 0.63 ⁇ C daf + 1.12 ⁇ H daf + 62.18;
- V daf j -0.90 ⁇ M t -0.45 ⁇ A ar -1.08 ⁇ C daf -8.10 ⁇ H daf +160.79;
- V daf j -0.02 ⁇ M t -0.08 ⁇ A ar -0.33 ⁇ C daf -0.07 ⁇ H daf +56.46;
- V daf j 0.11 ⁇ M t -0.10 ⁇ A ar -1.34 ⁇ C daf +4.09 ⁇ H daf +121.39;
- V daf j -0.11 ⁇ M t -0.16 ⁇ A ar -1.34 ⁇ C daf +6.48 ⁇ H daf +116.84;
- V daf j 0.21 ⁇ M t -0.01 ⁇ A ar -0.64 ⁇ C daf +4.12 ⁇ H daf +68.91;
- Vdaf is the dry ash-free volatile matter range
- Vdafj is the dry ash-free volatile matter quantitative value
- Mt is the total moisture
- Aar is the ash content on the received basis
- Cdaf is the dry ash-free carbon
- Hdaf is the dry ash-free hydrogen, all in percentage.
- This embodiment provides a method for determining the volatile matter content of power coal. This method is applicable to anthracite, lean coal, bituminous coal, and lignite, and includes the following steps:
- Step 1 Obtain basic coal quality test data, specifically including: total moisture M t , in %, received ash A ar , in %, dried ash-free carbon C daf , in %, dried ash-free hydrogen H daf , in %.
- Step 2 Calculate the C/H ratio, see formula (1) for details
- Step 3 Based on the coal quality indicators from Step 1, the range of dry ash-free V daf will be preliminarily determined, with the unit being %.
- the specific implementation method is as follows:
- Step 4 Based on the range of dry ash-free volatile matter ( Vdaf) preliminarily determined in Step 3 (in %), calculate the dry ash-free volatile matter of the coal sample as follows:
- step three Based on the classification results of step three, the volatile matter content of sample 1 is calculated.
- V daf the calculated value of V daf is 3.69%, while the actual test result of V daf is 3.52%. It can be seen that the calculated result of this application and the actual test result are very close.
- This embodiment provides a method for determining the volatile matter content of power coal. This method is applicable to anthracite, lean coal, bituminous coal, and lignite, and includes the following steps:
- Step 1 Obtain basic coal quality test data, specifically including: total moisture M t , in %, received ash A ar , in %, dried ash-free carbon C daf , in %, dried ash-free hydrogen H daf , in %.
- Step 3 Based on the coal quality indicators in Step 1, the range of dry ash-free V daf will be preliminarily determined, and its unit is %, as follows:
- Step 4 Based on the range of dry ash-free volatile matter ( Vdaf) preliminarily determined in Step 3 (in %), calculate the dry ash-free volatile matter of the coal sample as follows:
- the calculated result of V daf is 50.09, and the actual test result of V daf is 50.93%, which shows that the calculated result of this application and the actual test result are very close.
- this embodiment provides a system for determining the volatile matter content of power coal, comprising:
- the data acquisition module is used to acquire basic coal quality test data of the coal to be tested, including: total moisture, as-received ash, dry ash-free carbon, and dry ash-free hydrogen.
- the data analysis module is used to determine the range of dry ash-free based on dry ash-free carbon and dry ash-free hydrogen;
- the calculation module is used to calculate the dry ash-free volatile matter of the coal to be tested based on the determined dry ash-free range and the basic coal quality test data of the coal to be tested.
- This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of a method for determining the volatile matter content of power coal.
- this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and/or one or more block diagrams.
- These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and/or one or more block diagrams.
- this application requires fewer coal quality parameters, which helps reduce the equipment procurement costs for power plants.
- This application is simple and quick; the research results are derived through statistical analysis of a large amount of laboratory test data, resulting in high calculation accuracy. It can be used for online coal quality detection systems or for verifying the volatile matter content of online coal quality detection results. This is beneficial for guiding the daily operation of power plants and coal blending, and has high engineering application value.
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Abstract
本申请公开了一种确定动力用煤挥发分的方法及系统,该方法包括:获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基挥发分的范围;根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。该系统包括依次连接的数据获取模块、数据分析模块和计算模块。本申请需要的煤质参数较少,有利于降低电厂的设备采购成本。本申请简便快捷,研究结果是通过大量实验室的测试数据进行统计分析得出,计算精度较高。本申请可用于煤质在线检测系统或者煤质在线检测结果挥发分的校核,具有较高的工程应用价值。
Description
相关申请的交叉引用
本申请要求在2024年6月12日提交中国专利局、申请号为202410754740.8、发明名称为“一种确定动力用煤挥发分的方法及系统”的中国专利申请的优先权,其全部内容通过引用的方式并入本文中。
本申请属于动力用煤的煤质技术领域,具体涉及一种确定动力用煤挥发分的方法及系统。
动力用煤,简称动力煤,是用于产生动力和热能的煤炭。动力用煤主要包括不粘煤、长焰煤、褐煤、无烟煤、贫煤、弱粘煤、天然焦及部分未分类的煤种。从商品煤来说,主要有洗混煤、洗中煤、粉煤、末煤等。动力用煤的质量要求相对于其他用煤较低,但为了保证经济效益和环保要求,仍需要满足一定的标准。
动力用煤主要用于以下领域:
发电:火力发电厂是动力用煤的主要用户,约占动力用煤总消费量的70%以上。
机车推进:煤炭是机车推进的主要能源之一,特别是煤炭运输机车。
船舶动力:一些船舶使用煤炭作为动力源,特别是内河和近海船舶。
工业锅炉燃烧:许多工业过程需要使用锅炉产生蒸汽或热水,动力用煤是这些锅炉的主要燃料。
为了实时掌握入炉煤的煤质情况,目前各种煤质在线检测技术和装备应运而生,如在线水分分析仪、在线灰分分析仪、在线硫分析仪以及在线元素分析仪等,发热量和挥发分大都是通过这些测量结果再经过模型计算得到。
其中在线水分分析仪是一种能够实时在线监测物料水分含量的仪器。在线水分分析仪的工作原理基于多种科学技术手段,其中最为常见的是红外光谱法。红外光吸收原理表明,物质内部的分子结构(如水中的氧-氢键)会吸收特定波长的近红外光线。在线水分仪利用这一原理,分析某特定波长的近红外能量变化,从而确定物料中的水分含量。具体来说,当水分子遇到特定能量带时,会发生振动,这些振动涉及到水分子中两个氢原子与氧原子之间的键的伸缩、扭曲等形变。为了引起这些振动,外部能量需要覆盖整个电磁光谱中的特定波段。在近红外光谱范围内,水分子对特定波段的吸收特别强烈,同时仪器在发射、过滤和接收这些能量方面更容易实现。因此,通过测量物料对特定波长红外光的吸收程度,可以判断其含水量。
在线灰分分析仪是一种基于现代分析技术和传感器技术设计的设备,能够实时、连续地测量煤炭等固体燃料中的灰分含量。在线灰分分析仪采用多种不同的工作原理,但通常都基于物料的物理或化学性质来测量灰分含量。
在线硫分析仪主要用于实时监测和控制各种物料(如煤炭、石油、天然气等)中的硫含量。它通过采用先进的检测技术,如X荧光、红外光谱、紫外光谱等,实现对物料中硫含量的快速、准确测量。
在线元素分析仪主要利用物理或化学方法,如中子活化、射线测量、光谱分析等,来实时测量样品中的元素含量。在线元素分析仪可以用于研究燃料、煤、石油等能源物质的元素组成和含量,帮助优化能源利用和减少环境污染。
虽然测量的指标越多,模型的计算结果越准确。但是,由于每个在线煤质分析仪的设备费用都较高,导致电厂的经济负担增加。如果减少在线煤质测量指标,又可能导致部分关键指标如挥发分的精度不高。
本申请的目的是为了克服现有煤质在线检测精度不高的问题,提供了一种确定动力用煤挥发分的方法及系统,其适用于无烟煤、贫煤、烟煤及褐煤。
为达到上述目的,本申请采用以下技术方案:
一种确定动力用煤挥发分的方法,包括:
获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;
根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基挥发分的范围;
根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。
本申请进一步的改进在于,根据确定的干燥无灰基的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分,包括:
当3%≤Vdaf<12%时,Vdafj=0.12×Mt-0.02×Aar-0.63×Cdaf+1.12×Hdaf+62.18;
当12%≤Vdaf<22%时,Vdafj=-0.90×Mt-0.45×Aar-1.08×Cdaf-8.10×Hdaf+160.79;
当22%≤Vdaf<28%时,Vdafj=-0.02×Mt-0.08×Aar-0.33×Cdaf-0.07×Hdaf+56.46;
当28%≤Vdaf<40%时,Vdafj=0.11×Mt-0.10×Aar-1.34×Cdaf+4.09×Hdaf+121.39;
当40%≤Vdaf<50%时,Vdafj=-0.11×Mt-0.16×Aar-1.34×Cdaf+6.48×Hdaf+116.84;
当60%≤Vdaf<70%、50%≤Vdaf<60%及40%≤Vdaf<60%时,Vdafj=0.21×Mt-0.01×Aar-0.64×Cdaf+4.12×Hdaf+68.91;
其中,Vdaf为干燥无灰基挥发分范围,Vdafj为干燥无灰基挥发分定量值,Mt为全水分,Aar为收到基灰分,Cdaf为干燥无灰基碳,Hdaf为干燥无灰基氢,单位均为%。
本申请进一步的改进在于,当3%≤Vdaf<12%时,Cdaf≥89%且Hdaf<4%。
本申请进一步的改进在于,当12%≤Vdaf<22%时,Cdaf≥86%、Hdaf≤4.4%且Aar<35%。
本申请进一步的改进在于,当22%≤Vdaf<28%时,Cdaf≥85%且Hdaf≥4.2%,或者Cdaf≥80%且Hdaf≤4.6%。
本申请进一步的改进在于,当28%≤Vdaf<40%时,80≤Cdaf≤82%且Hdaf<5%,或者Cdaf≤80%,或者碳氢比C/H≤18%,其中C/H=Cdaf/Hdaf。
本申请进一步的改进在于,当40%≤Vdaf<50%时,Cdaf≤77%,或者Hdaf≥5%。
本申请进一步的改进在于,当60%≤Vdaf<70%时,Cdaf<70%且Hdaf≥5.5%;
当50%≤Vdaf<60%时,Hdaf≥5.8%;
当40%≤Vdaf<60%时,Cdaf≤72%。
本申请还提供了一种确定动力用煤挥发分的系统,包括:
数据获取模块,用于获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;
数据分析模块,用于根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基挥发分的范围;
计算模块,用于根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。
本申请最后还提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序当被处理器执行时实现所述的一种确定动力用煤挥发分的方法的步骤。
与现有技术相比,本申请至少具有如下有益的技术效果:
本申请提供的一种确定动力用煤挥发分的方法及系统,首先根据煤的工业分析和元素分析得到动力用煤的挥发分,其次根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基的范围,最后结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分,该方法简便快捷。与现有方法相比,本申请计算精度高,本申请统计了110个数据,煤质涵盖无烟煤、贫煤、烟煤及褐煤,本申请得出的Vdaf与测量值的平均绝对偏差为1.57%,对于干燥无灰基Vdaf>40%的煤样,最大绝对偏差为4.67%,最小绝对偏差为0.04%。因此,本申请具有较高的工程应用价值。本申请可用于煤质在线检测系统,也可用于煤质在线检测结果挥发分的校核。此外,本申请还可用于指导电厂的日常运行、智慧电厂的配煤掺烧等,可指导运行人员及时实施运行参数优化,大幅度提高锅炉运行的安全性和经济性。
图1为本申请一种确定动力用煤挥发分的方法的流程图。
图2为本申请一种确定动力用煤挥发分的系统的结构框图。
下面将更详细地描述本申请的示例性实施例。虽然给出了本申请的示例性实施例,然而应当理解,可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本申请,并且能够将本申请的范围完整的传达给本领域的技术人员。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
应当理解,在本申请说明书中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本申请。如在本申请说明书和所附权利要求书中所使用的那样,除非上下文清楚地指明其它情况,否则单数形式的“一”、“一个”及“该”意在包括复数形式。
还应当进一步理解,在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合,并且包括这些组合。
在附图中示出了根据本申请公开实施例的各种结构示意图。这些图并非是按比例绘制的,其中为了清楚表达的目的,放大了某些细节,并且可能省略了某些细节。图中所示出的各种区域、层的形状及它们之间的相对大小、位置关系仅是示例性的,实际中可能由于制造公差或技术限制而有所偏差,并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/层。
下面结合附图对本申请的实施例进行详细说明。
实施例1
如图1所示,本实施例提供的一种确定动力用煤挥发分的方法,该方法适用于无烟煤、贫煤、烟煤及褐煤,包括:
获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;
根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基的范围;
根据确定的干燥无灰基的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。
在本实施例中,当3%≤Vdaf<12%时,Vdafj=0.12×Mt-0.02×Aar-0.63×Cdaf+1.12×Hdaf+62.18;
当12%≤Vdaf<22%时,Vdafj=-0.90×Mt-0.45×Aar-1.08×Cdaf-8.10×Hdaf+160.79;
当22%≤Vdaf<28%时,Vdafj=-0.02×Mt-0.08×Aar-0.33×Cdaf-0.07×Hdaf+56.46;
当28%≤Vdaf<40%时,Vdafj=0.11×Mt-0.10×Aar-1.34×Cdaf+4.09×Hdaf+121.39;
当40%≤Vdaf<50%时,Vdafj=-0.11×Mt-0.16×Aar-1.34×Cdaf+6.48×Hdaf+116.84;
当60%≤Vdaf<70%、50%≤Vdaf<60%及40%≤Vdaf<60%时,Vdafj=0.21×Mt-0.01×Aar-0.64×Cdaf+4.12×Hdaf+68.91;
其中,Vdaf为干燥无灰基挥发分范围,Vdafj为干燥无灰基挥发分定量值,Mt为全水分,Aar为收到基灰分,Cdaf为干燥无灰基碳,Hdaf为干燥无灰基氢,单位均为%。
在本实施例中,当3%≤Vdaf<12%时,Cdaf≥89%且Hdaf<4%。
当12%≤Vdaf<22%时,Cdaf≥86%、Hdaf≤4.4%且Aar<35%。
当22%≤Vdaf<28%时,Cdaf≥85%且Hdaf≥4.2%,或者Cdaf≥80%且Hdaf≤4.6%。
当28%≤Vdaf<40%时,80≤Cdaf≤82%且Hdaf<5%,或者Cdaf≤80%,或者碳氢比C/H≤18%,其中C/H=Cdaf/Hdaf。
当40%≤Vdaf<50%时,Cdaf≤77%,或者Hdaf≥5%。
当60%≤Vdaf<70%时,Cdaf<70%且Hdaf≥5.5%;当50%≤Vdaf<60%时,Hdaf≥5.8%;当40%≤Vdaf<60%时,Cdaf≤72%。
实施例2-样品1的干燥无灰基挥发分的计算
本实施例提供的一种确定动力用煤挥发分的方法,该方法适用于无烟煤、贫煤、烟煤及褐煤,包括如下步骤:
第一步:获得煤的基本煤质检测数据,具体包括:全水分Mt,单位为%,收到基灰分Aar,单位为%,干燥无灰基碳Cdaf,单位为%,干燥无灰基氢Hdaf,单位为%;
样品1的煤质检测结果如下:Mt=5.8%,Aar=19.61%,Cdaf=95.54%,Hdaf=1.25%。
第二步:计算C/H比值,具体见式(1);
C/H=Cdaf/Hdaf (式1)
样品1C/H=Cdaf/Hdaf=95.54/1.25=76.62。
第三步:根据第一步的煤质指标将初步确定干燥无灰基Vdaf的范围,其单位为%,具体实现方法如下:
(1)第三步中,首先确定Vdaf是否属于3%≤Vdaf<12%的范围。煤质指标要求为Cdaf≥89%且Hdaf<4%,否则显示为“其它煤种”。
样品1的满足Cdaf=95.54%≥89%且Hdaf=1.25%<4%,属于3%≤Vdaf<12%的范围
(2)第三步中,在其它煤种中确定Vdaf是否属于60%≤Vdaf<70%的范围。煤质指标要求为Cdaf<70%且Hdaf≥5.5%,否则显示为“其它煤种”。
(3)第三步中,在其它煤种中确定Vdaf是否属于50%≤Vdaf<60%的范围。煤质指标要求为,Hdaf≥5.8%,否则显示为“其它煤种”。
(4)第三步中,在其它煤种中确定Vdaf是否属于40%≤Vdaf<60%的范围。煤质指标要求为Cdaf≤72%,否则显示为“其它煤种”。
(5)第三步中,在其它煤种中确定Vdaf是否属于12%≤Vdaf<22%的范围。煤质指标要求为Cdaf≥86%、Hdaf≤4.4%且Aar<35%,否则显示为“其它煤种”。
(6)第三步中,在其它煤种中确定Vdaf是否属于22%≤Vdaf<28%的范围。煤质指标要求为Cdaf≥85%且Hdaf≥4.2%,否则显示为“其它煤种”。
(7)第三步中,在其它煤种中确定Vdaf是否属于28%≤Vdaf<40%的范围。煤质指标要求为80≤Cdaf≤82%且Hdaf<5%,否则显示为“其它煤种”。
(8)第三步中,在其它煤种中确定Vdaf是否属于22%≤Vdaf<28%的范围。煤质指标要求为Cdaf≥80%且Hdaf≤4.6%,否则显示为“其它煤种”。
(9)第三步中,在其它煤种中确定Vdaf是否属于40%≤Vdaf<50%的范围。煤质指标要求为Cdaf≤77%或者Hdaf≥5%,否则显示为“其它煤种”。
(10)第三步中,在其它煤种中确定Vdaf是否属于28%≤Vdaf<40%的范围。煤质指标要求为Cdaf≤80%或者C/H≤18%,否则显示为“其它煤种”。
第四步:根据第三步初步确定的干燥无灰基Vdaf的范围,其单位为%,计算煤样的干燥无灰基挥发分具体如下:
根据第三步的分类结果,样品1的挥发分计算
Vdafj=0.12×Mt-0.02×Aar-0.63×Cdaf+1.12×Hdaf+62.18=0.12×5.8-0.02×19.61-0.63×95.54+1.12×1.25+62.18=3.69
按照本申请,Vdaf的计算结果为3.69%,Vdaf的实际测试结果为3.52%,可见本申请计算结果和实际测试结果非常接近。
实施例3-样品2的干燥无灰基挥发分的计算
本实施例提供的一种确定动力用煤挥发分的方法,该方法适用于无烟煤、贫煤、烟煤及褐煤,包括如下步骤:
第一步:获得煤的基本煤质检测数据,具体包括:全水分Mt,单位为%,收到基灰分Aar,单位为%,干燥无灰基碳Cdaf,单位为%,干燥无灰基氢Hdaf,单位为%;
样品2的煤质检测结果如下:Mt=15.7%,Aar=39.20%,Cdaf=75.08%,Hdaf=6.39%。
第二步:计算C/H比值,具体见式(1);
C/H=Cdaf/Hdaf (式1)
C/H=Cdaf/Hdaf (式1)
样品2C/H=Cdaf/Hdaf=75.08/6.39=11.75
第三步:根据第一步的煤质指标将初步确定干燥无灰基Vdaf的范围,其单位为%,具体如下:
(1)第三步中,首先确定Vdaf是否属于3%≤Vdaf<12%的范围。煤质指标要求为Cdaf≥89%且Hdaf<4%,否则显示为“其它煤种”。
样品2Cdaf=75.08%,Hdaf=6.39%,不满足Cdaf≥89%且Hdaf<4%的要求,则为“其它煤种”,进入下一步判别。
(2)第三步中,在其它煤种中确定Vdaf是否属于60%≤Vdaf<70%的范围。煤质指标要求为Cdaf<70%且Hdaf≥5.5%,否则显示为“其它煤种”。
样品2Cdaf=75.08%,Hdaf=6.39%,不满足Cdaf<70%且Hdaf≥5.5%的要求,则为“其它煤种”,进入下一步判别。
(3)第三步中,在其它煤种中确定Vdaf是否属于50%≤Vdaf<60%的范围。煤质指标要求为,Hdaf≥5.8%,否则显示为“其它煤种”。
样品2Cdaf=75.08%,Hdaf=6.39%,满足Hdaf≥5.8%的要求,初步判别其属于50%≤Vdaf<60%。
(4)第三步中,在其它煤种中确定Vdaf是否属于40%≤Vdaf<60%的范围。煤质指标要求为Cdaf≤72%,否则显示为“其它煤种”。
(5)第三步中,在其它煤种中确定Vdaf是否属于12%≤Vdaf<22%的范围。煤质指标要求为Cdaf≥86%、Hdaf≤4.4%且Aar<35%,否则显示为“其它煤种”。
(6)第三步中,在其它煤种中确定Vdaf是否属于22%≤Vdaf<28%的范围。煤质指标要求为Cdaf≥85%且Hdaf≥4.2%,否则显示为“其它煤种”。
(7)第三步中,在其它煤种中确定Vdaf是否属于28%≤Vdaf<40%的范围。煤质指标要求为80≤Cdaf≤82%且Hdaf<5%,否则显示为“其它煤种”。
(8)第三步中,在其它煤种中确定Vdaf是否属于22%≤Vdaf<28%的范围。煤质指标要求为Cdaf≥80%且Hdaf≤4.6%,否则显示为“其它煤种”。
(9)第三步中,在其它煤种中确定Vdaf是否属于40%≤Vdaf<50%的范围。煤质指标要求为Cdaf≤77%或者Hdaf≥5%,否则显示为“其它煤种”。
(10)第三步中,在其它煤种中确定Vdaf是否属于28%≤Vdaf<40%的范围。煤质指标要求为Cdaf≤80%或者C/H≤18%,否则显示为“其它煤种”。
第四步:根据第三步初步确定的干燥无灰基Vdaf的范围,其单位为%,计算煤样的干燥无灰基挥发分具体如下:
根据第三步的分类结果,样品2的挥发分计算
Vdafj=0.21×Mt-0.01×Aar-0.64×Cdaf+4.12×Hdaf+68.91=0.21×15.7-0.01×39.20-0.64×75.08+4.12×6.39+68.91=50.09
按照本申请,Vdaf的计算结果为50.09,Vdaf的实际测试结果为50.93%,可见本申请计算结果和实际测试结果非常接近。
实施例4
如图2所示,本实施例提供的一种确定动力用煤挥发分的系统,包括:
数据获取模块,用于获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;
数据分析模块,用于根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基的范围;
计算模块,用于根据确定的干燥无灰基的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。
实施例5
本实施例提供的一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序当被处理器执行时实现所述的一种确定动力用煤挥发分的方法的步骤。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、系统和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的系统。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
因此,本申请需要的煤质参数较少,有利于降低电厂的设备采购成本。本申请简便快捷,研究结果是通过大量实验室的测试数据进行统计分析得出,计算精度较高,可用于煤质在线检测系统或者煤质在线检测结果挥发分的校核,有利于指导电厂的日常运行以及配煤掺烧等工作,具有较高的工程应用价值。
以上显示和描述了本申请的基本原理和主要特征和本申请的优点,对于本领域技术人员而言,显然本申请不限于上述示范性实施例的细节,而且在不背离本申请的精神或基本特征的情况下,能够以其他的具体形式实现本申请。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本申请的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本申请内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。以上内容仅为说明本申请的技术思想,不能以此限定本申请的保护范围,凡是按照本申请提出的技术思想,在技术方案基础上所做的任何改动,均落入本申请权利要求书的保护范围之内。
Claims (10)
- 一种确定动力用煤挥发分的方法,其特征在于,包括:获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基挥发分的范围;根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分。
- 根据权利要求1所述的一种确定动力用煤挥发分的方法,其特征在于,根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分,包括:当3%≤Vdaf<12%时,Vdafj=0.12×Mt-0.02×Aar-0.63×Cdaf+1.12×Hdaf+62.18;当12%≤Vdaf<22%时,Vdafj=-0.90×Mt-0.45×Aar-1.08×Cdaf-8.10×Hdaf+160.79;当22%≤Vdaf<28%时,Vdafj=-0.02×Mt-0.08×Aar-0.33×Cdaf-0.07×Hdaf+56.46;当28%≤Vdaf<40%时,Vdafj=0.11×Mt-0.10×Aar-1.34×Cdaf+4.09×Hdaf+121.39;当40%≤Vdaf<50%时,Vdafj=-0.11×Mt-0.16×Aar-1.34×Cdaf+6.48×Hdaf+116.84;当60%≤Vdaf<70%、50%≤Vdaf<60%及40%≤Vdaf<60%时,Vdafj=0.21×Mt-0.01×Aar-0.64×Cdaf+4.12×Hdaf+68.91;其中,Vdaf为干燥无灰基挥发分范围,Vdafj为干燥无灰基挥发分计算值,Mt为全水分,Aar为收到基灰分,Cdaf为干燥无灰基碳,Hdaf为干燥无灰基氢,单位均为%。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当3%≤Vdaf<12%时,Cdaf≥89%且Hdaf<4%。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当12%≤Vdaf<22%时,Cdaf≥86%、Hdaf≤4.4%且Aar<35%。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当22%≤Vdaf<28%时,Cdaf≥85%且Hdaf≥4.2%,或者Cdaf≥80%且Hdaf≤4.6%。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当28%≤Vdaf<40%时,80≤Cdaf≤82%且Hdaf<5%,或者Cdaf≤80%,或者碳氢比C/H≤18%,其中C/H=Cdaf/Hdaf。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当40%≤Vdaf<50%时,Cdaf≤77%,或者Hdaf≥5%。
- 根据权利要求2所述的一种确定动力用煤挥发分的方法,其特征在于,当60%≤Vdaf<70%时,Cdaf<70%且Hdaf≥5.5%;当50%≤Vdaf<60%时,Hdaf≥5.8%;当40%≤Vdaf<60%时,Cdaf≤72%。
- 一种确定动力用煤挥发分的系统,其特征在于,包括:数据获取模块,用于获取待检煤的基本煤质检测数据,包括:全水分、收到基灰分、干燥无灰基碳以及干燥无灰基氢;数据分析模块,用于根据干燥无灰基碳和干燥无灰基氢,确定干燥无灰基的范围;计算模块,用于根据确定的干燥无灰基挥发分的范围,结合待检煤的基本煤质检测数据,计算得到待检煤的干燥无灰基挥发分定量值。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,所述计算机程序当被处理器执行时实现权利要求1-8中任一项所述的一种确定动力用煤挥发分的方法的步骤。
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| US20130104451A1 (en) * | 2011-10-28 | 2013-05-02 | Agni Corporation (Cayman Islands) | Novel systems and methods for producing fuel from diverse biomass |
| CN111261237A (zh) * | 2020-01-19 | 2020-06-09 | 西安热工研究院有限公司 | 一种单一煤种一维火焰炉燃尽率的计算方法 |
| CN114646746A (zh) * | 2022-03-21 | 2022-06-21 | 西安热工研究院有限公司 | 一种确定动力用煤挥发分的方法 |
| CN116660493A (zh) * | 2023-05-19 | 2023-08-29 | 西安热工研究院有限公司 | 一种判别发电锅炉用煤种类的方法 |
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