Method and device for determining process indexes of power coal cleaning

Abstract

The application provides a method and device for determining indexes of a power coal coal separation process, the method comprising: obtaining unit solid waste emission heat efficiency of the power coal, processing cost per ton of raw coal, profit per ton of raw coal, and energy consumption per ton of raw coal; and determining at least one of the unit solid waste emission heat efficiency of the power coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as an index of the power coal coal separation process, so that the index of the power coal coal separation process can better reflect the comprehensive performance of the power coal separation and processing process, thereby solving the problem of poor evaluation effect of the power coal separation and processing process in the prior art.

Description

Technical Field

[0001] This application relates to the field of thermal coal technology, and more specifically, to a method and apparatus for determining the process parameters of thermal coal preparation. Background Technology

[0002] Common evaluation indicators for coal preparation plant processes may deviate from those for imperfections, quantity efficiency, and total mismatched materials. However, these parameters are overly complex and practically meaningless when evaluating the process performance of thermal coal preparation plants that use calorific value as a product indicator. Thermal coal refers to coal used as a power feedstock, mainly including lignite, long-flame coal, lean coal, and gas coal. The purpose of thermal coal sorting and processing is to remove gangue from the raw coal and increase the calorific value of the thermal coal product, which is generally priced based on calorific value. The calorific value of the product is closely related to the ash content and moisture content of the thermal coal. The ash content and moisture content of the thermal coal product are closely related to the lower limit of the particle size of the feed material in the thermal coal sorting process. The lower limit of the feed particle size directly affects the gangue removal rate and the "loss rate" of low-calorific-value byproducts such as fine coal slime (in wet sorting), thus directly affecting the overall yield of the thermal coal product. In summary, there are many indicators related to the calorific value of thermal coal, and no single indicator can comprehensively reflect the overall performance of the thermal coal sorting and processing process. Summary of the Invention

[0003] The main objective of this application is to provide a method and apparatus for determining the process parameters of thermal coal preparation, so as to solve the problem of poor evaluation effect of thermal coal separation and processing technology in existing solutions.

[0004] According to one aspect of the present invention, a method for determining the process indicators of thermal coal preparation is provided. The method includes: obtaining the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; and determining at least one of the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as the process indicators of thermal coal preparation.

[0005] Optionally, obtaining the heat enhancement efficiency of solid waste emissions per unit of thermal coal includes: obtaining the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal; and determining the heat enhancement efficiency of solid waste emissions per unit of thermal coal based on the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal.

[0006] Optionally, obtaining the actual increase in the calorific value of solid waste emissions per unit of thermal coal includes: retrieving the yield of thermal coal products and the yield of low-calorific-value coal slime from the actual production table, wherein the actual production table is used to characterize the relationship between the yield of raw coal and the calorific value of the raw coal, the yield of thermal coal products and the calorific value of the thermal coal, and the yield of low-calorific-value coal slime and the calorific value of the low-calorific-value coal slime; determining the actual solid waste emission yield based on the yield of thermal coal products and the yield of low-calorific-value coal slime; determining the weighted average of the lower heating value of thermal coal products based on the application basis from the actual production table, and retrieving the calorific value of the raw coal; and determining the actual increase in the calorific value of solid waste emissions per unit of thermal coal based on the weighted average of the lower heating value of thermal coal products based on the application basis, the calorific value of the raw coal, and the actual solid waste emission yield.

[0007] Optionally, obtaining the increase in the theoretical unit solid waste emission calorific value of thermal coal includes: determining the received basis lower heating value of the selected raw coal after waste removal based on the actual production table and the waste removal test record table; retrieving the calorific value of the selected raw coal from the actual production table, and determining the increase in the received basis lower heating value of the selected raw coal after waste removal based on the calorific value of the selected raw coal and the received basis lower heating value of the selected raw coal after waste removal based on the actual production table; determining the theoretical solid waste emission yield based on the waste removal test record table; and determining the increase in the theoretical unit solid waste emission calorific value of thermal coal based on the theoretical solid waste emission yield and the received basis lower heating value of the selected raw coal after waste removal based on the actual production table.

[0008] Optionally, the cost of processing one ton of raw coal includes at least one of the following: material costs, fixed wages, welfare expenses, electricity costs, depreciation costs, repair costs, and coal waste disposal costs.

[0009] Optionally, obtaining the profit per ton of raw coal includes: obtaining the total cost and expenses, which includes the sales revenue of each product of the coal preparation plant, the cost of the raw coal to be prepared, the total processing cost, taxes and fees, basic depreciation, major repair expenses, office expenses, travel expenses, and enterprise operation and management expenses; and determining the profit per ton of raw coal based on the total cost and expenses.

[0010] Optionally, after determining at least one of the following as the thermal coal preparation process indicators: the thermal coal unit solid waste emission heating efficiency, the raw coal processing cost per ton, the raw coal profit per ton, and the raw coal energy consumption per ton, the method further includes: storing the thermal coal unit solid waste emission heating efficiency, the raw coal processing cost per ton, the raw coal profit per ton, and the raw coal energy consumption per ton in a target database, wherein the target database includes multiple data tables, and the thermal coal unit solid waste emission heating efficiency, raw coal processing cost per ton, raw coal profit per ton, and raw coal energy consumption per ton are stored in different data tables.

[0011] Optionally, determining at least one of the following as thermal coal preparation process indicators—the thermal efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal—involves: determining the thermal efficiency of solid waste emissions per unit of thermal coal and the processing cost per ton of raw coal as thermal coal preparation process indicators; determining the thermal efficiency of solid waste emissions per unit of thermal coal and the processing cost per ton of raw coal as thermal coal preparation process indicators includes: determining the weight corresponding to the thermal efficiency of solid waste emissions per unit of thermal coal as a first weight; determining the weight corresponding to the processing cost per ton of raw coal as a second weight, wherein the second weight is less than the first weight; determining a first comprehensive indicator for the thermal coal preparation process based on the first weight and the second weight; and combining the thermal efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, and the energy consumption per ton of raw coal... Determining at least one of coal profit and energy consumption per ton of raw coal as a process indicator for thermal coal preparation includes: determining the thermal coal preparation process indicator based on the thermal coal unit solid waste emission heat enhancement efficiency, the raw coal processing cost per ton of raw coal, and the raw coal profit per ton of raw coal; determining the thermal coal preparation process indicator based on the thermal coal unit solid waste emission heat enhancement efficiency, the raw coal processing cost per ton of raw coal, and the raw coal profit per ton of raw coal includes: determining the weight corresponding to the thermal coal unit solid waste emission heat enhancement efficiency as a third weight; determining the weight corresponding to the raw coal processing cost per ton of raw coal as a fourth weight, wherein the fourth weight is less than the third weight; determining the weight corresponding to the raw coal profit per ton of raw coal as a fifth weight, wherein the fifth weight is less than or equal to the third weight; and determining a second comprehensive indicator for the thermal coal preparation process based on the third weight, the fourth weight, and the fifth weight.

[0012] Optionally, after determining at least one of the thermal coal unit solid waste emission heating efficiency, the raw coal processing cost per ton, the raw coal profit per ton, and the raw coal energy consumption per ton as the thermal coal preparation process indicators, the method further includes: receiving a first predetermined operation, wherein the first predetermined operation refers to acting on the display device to select a target display identifier from a plurality of display identifiers, wherein each display identifier is used to characterize one of the thermal coal unit solid waste emission heating efficiency, the raw coal processing cost per ton, the raw coal profit per ton, and the raw coal energy consumption per ton, and the target display identifier is at least one of the plurality of display identifiers; receiving a second predetermined operation, wherein the second predetermined operation refers to acting on the display device to call the target database and select at least one of the thermal coal unit solid waste emission heating efficiency, the raw coal processing cost per ton, the raw coal profit per ton, and the raw coal energy consumption per ton from the database.

[0013] According to another aspect of the present invention, an apparatus for determining the process indicators of thermal coal preparation is also provided. The apparatus includes: an acquisition unit and a determination unit; the acquisition unit is used to acquire the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; the determination unit is used to determine at least one of the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as the process indicators of thermal coal preparation.

[0014] In this embodiment of the invention, by obtaining the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and determining at least one of the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as the thermal coal preparation process index, the thermal coal preparation process index can better reflect the comprehensive performance of the thermal coal separation and processing process, thereby solving the problem of poor evaluation effect of the thermal coal separation and processing process in the existing scheme. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A flowchart illustrating a method for determining the process parameters of thermal coal preparation according to an embodiment of this application is shown.

[0017] Figure 2 A schematic diagram of an apparatus for determining the process parameters of thermal coal preparation according to an embodiment of this application is shown. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Furthermore, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0022] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0023] The heat enhancement efficiency per unit of solid waste emission from thermal coal: This indicator eliminates the influence of factors such as differences in coal type and raw coal quality, and takes into account factors such as the lower limit of feed particle size, product yield, calorific value, ash content, moisture content, and the ability of the adopted separation and processing technology to improve product calorific value and reduce product ash content and moisture content. It is a comprehensive indicator reflecting the performance of the separation and processing technology in a thermal coal preparation plant, and its use in evaluating the performance of the separation and processing technology in a thermal coal preparation plant has good fairness. Therefore, the heat enhancement efficiency per unit of coal consumption is taken as the primary comprehensive indicator for evaluating the performance of the coal preparation process in a thermal coal preparation plant.

[0024] Cost per ton of raw coal: This indicator has a direct impact on the overall economic benefits of thermal coal preparation plants. It can reflect the input of the coal preparation plant after deducting the cost of raw coal. It is not related to the product selling price and can fairly measure the operating efficiency of the thermal coal preparation process system. Therefore, the cost per ton of raw coal can be used as another comprehensive indicator for evaluating the coal preparation process of thermal coal (including non-caking coal and lignite). It has good comparability for evaluating the coal preparation process of thermal coal preparation plants with different coal types (coal quality) and different separation and processing technologies.

[0025] Profit per ton of raw coal: Profit per ton of raw coal can well reflect the comprehensive input and output of the separation and processing technology system of a thermal coal preparation plant. It covers various aspects such as the quality of raw coal entering the preparation plant (raw coal cost), the performance of the separation and processing technology system, the product selling price, and the overall production and operation management level. It is a relatively direct reflection of the comprehensive economic benefits of the preparation plant. Therefore, profit per ton of raw coal can also be used as a comprehensive indicator for evaluating the separation and processing technology of thermal coal (including non-caking coal and lignite) preparation plants.

[0026] Energy consumption per ton of raw coal: refers to the sum of various energy consumptions (generally including: electricity consumption, oil consumption, gas (fuel) consumption, heat consumption, water consumption, compressed air consumption, coal consumption (selection consumption), etc.) consumed per ton of raw coal, expressed as equivalent to kilograms of standard coal per ton of raw coal (Kgce / t).

[0027] Selected raw coal: Specifically refers to the raw coal that is processed by the coal preparation plant, i.e., the selected raw coal.

[0028] Thermal coal products: Products obtained after raw coal has been sorted and processed in a thermal coal preparation plant, including clean coal, mixed coal, coal slime, etc.

[0029] Low-calorific-value coal slime: Coal slime products produced by thermal coal preparation plants are defined as low-calorific-value coal slime products because of their low calorific value.

[0030] As mentioned in the background section, there are many indicators related to the calorific value of thermal coal in the existing technology, and no single indicator can comprehensively reflect the overall performance of the thermal coal sorting and processing technology. In order to solve the problem of poor evaluation effect of the thermal coal sorting and processing technology in the existing scheme, a typical embodiment of this application provides a method and apparatus for determining the indicators of thermal coal preparation process.

[0031] According to an embodiment of this application, a method for determining the process parameters of thermal coal preparation is provided.

[0032] Figure 1 This is a flowchart illustrating a method for determining the process parameters of thermal coal preparation according to an embodiment of this application. For example... Figure 1 As shown, the method includes the following steps:

[0033] Step S101: Obtain the heat enhancement efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal. The heat enhancement efficiency of solid waste emission per unit refers to the ratio of the actual increase in calorific value after the thermal coal emits solid waste to the theoretical increase in calorific value of the thermal coal, expressed as a percentage. The processing cost per ton of raw coal refers to the sum of costs invested in sorting and processing each ton of raw coal, expressed as yuan / ton. The profit per ton of raw coal refers to the profit generated from sorting and processing each ton of raw coal, expressed as yuan / ton. The energy consumption per ton of raw coal refers to the sum of energy consumed in sorting and processing each ton of raw coal, expressed as standard coal / ton.

[0034] Step S102: Determine at least one of the following as the thermal coal preparation process indicators: the heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal.

[0035] In the above steps, by obtaining the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and determining at least one of the above-mentioned heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as the thermal coal preparation process index, the thermal coal preparation process index can better reflect the comprehensive performance of the thermal coal separation and processing process, thereby solving the problem of poor evaluation effect of the thermal coal separation and processing process in the existing scheme.

[0036] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0037] In one embodiment of this application, obtaining the unit solid waste emission heat enhancement efficiency of thermal coal includes: obtaining the actual unit solid waste emission heat enhancement value and the theoretical unit solid waste emission heat enhancement value of thermal coal; and determining the unit solid waste emission heat enhancement efficiency of thermal coal based on the actual unit solid waste emission heat enhancement value and the theoretical unit solid waste emission heat enhancement value of thermal coal. By determining the unit solid waste emission heat enhancement efficiency of thermal coal based on the actual unit solid waste emission heat enhancement value and the theoretical unit solid waste emission heat enhancement value of thermal coal, the thermal coal preparation process indicators can better reflect the comprehensive performance of the thermal coal sorting and processing process, thereby solving the problem of poor evaluation effect of thermal coal sorting and processing process in existing solutions.

[0038] Specifically, the theoretical increase in calorific value of solid waste emissions per unit of thermal coal needs to be calculated based on theoretical gangue discharge tests and production statistics of the raw coal. The calculation method is: [Weighted average of the received basis lower heating value of the raw coal after removing gangue with a density greater than the actual sorting density and the received basis lower heating value of the low-calorific-value coal slime included in the thermal coal sales product, minus the received basis lower heating value of the raw coal] / theoretical solid waste emission yield. To ensure the consistency of the raw coal corresponding to the data used in calculating the actual increase in calorific value of solid waste emissions per unit and the theoretical increase in calorific value of solid waste emissions per unit, the test coal samples used in the theoretical gangue discharge test must be sampled and retained for the same statistical period (it is recommended to do so monthly or according to a prescribed statistical period) as the calculation of the actual increase in calorific value of solid waste emissions per unit.

[0039] Theoretical gangue removal test of raw coal: Raw coal with the same particle size range as the actual sorting coal in the coal preparation plant was used. Based on the actual sorting density of the coal preparation plant, a gangue removal test was conducted according to the national standard GB / T 478-2008 "Coal Float and Sink Test Method," with the same density value as the actual sorting density. The received base calorific value and theoretical gangue removal rate of the raw coal after theoretical gangue removal were obtained through the theoretical gangue removal test. The received base lower heating value and yield of low-calorific-value coal slime products were obtained from actual production statistics within the same production statistical period as the calculation of the actual increase in calorific value of solid waste emission per unit of coal preparation.

[0040] The theoretical increase in calorific value per unit of solid waste emission is calculated in two ways, depending on whether the low-calorific-value coal slime product is the final product sold by the power coal preparation plant:

[0041] The first method is as follows: If the low-calorific-value coal slime product is part of the final product sold by the thermal coal preparation plant, then the increase in the theoretical calorific value of the thermal coal is the weighted average of the received basis lower heating value of the raw coal after theoretical gangue removal and the received basis lower heating value of the low-calorific-value coal slime product, minus the received basis lower heating value of the raw coal; the theoretical solid waste discharge yield is the theoretical gangue discharge rate obtained from the theoretical gangue discharge test of the raw coal.

[0042] The second scenario is as follows: If the low-calorific-value coal slime product is not part of the final product sold by the coal preparation plant, but rather part of the solid waste produced by the coal preparation plant, then the increase in the theoretical calorific value of the coal is the received lower heating value of the raw coal after theoretical gangue removal minus the received lower heating value of the raw coal. The theoretical solid waste discharge yield is the sum of the theoretical gangue removal rate obtained from the theoretical gangue removal test of the raw coal and the yield of the low-calorific-value coal slime product.

[0043] It should be noted that the yield calculations for all products involved in this invention must be performed under the same baseline conditions. To ensure comparability of analytical data from different sources, the basic state of the actual analyzed coal sample or the theoretically converted coal sample must be given when reporting the analytical results. The unified scale used to characterize the basic state of the coal sample is called the baseline. The definitions of five commonly used baselines and the industrial analytical composition of coal under each baseline are described below: As-received baseline: Coal in its received state is used as the baseline, denoted as ar. Air-dried baseline: Coal that has reached an air-dried state is used as the baseline, denoted as ad. Dry baseline: Coal in a hypothetical anhydrous state is used as the baseline, denoted as d. Dry ash-free baseline: Coal in a hypothetical anhydrous and ash-free state is used as the baseline, denoted as daf. Dry mineral-free baseline: Coal in a hypothetical anhydrous and mineral-free state is used as the baseline, denoted as dmmf. Lower heating value: The lower heating value of coal refers to the heat generated by coal combustion under atmospheric pressure in air, minus the heat of vaporization (heat of evaporation) of the moisture in the coal (oxidized water generated by the combustion of hydrogen in the organic matter of the coal, as well as free water and combined water in the coal), and the remaining usable heat.

[0044] In one embodiment of this application, obtaining the actual increase in the calorific value of solid waste emissions per unit of thermal coal includes: retrieving the yield of thermal coal products and the yield of low-calorific-value coal slime from the actual production table, wherein the actual production table is used to characterize the relationship between the yield of the selected raw coal and the calorific value of the selected raw coal, the yield of the thermal coal products and the calorific value of the thermal coal, and the yield of the low-calorific-value coal slime and the calorific value of the low-calorific-value coal slime; determining the actual solid waste emission yield based on the yield of the thermal coal products and the yield of the low-calorific-value coal slime; determining the weighted average of the lower heating value of the thermal coal products based on the application received basis from the actual production table, and retrieving the calorific value of the selected raw coal; and determining the actual increase in the calorific value of solid waste emissions per unit of thermal coal based on the weighted average of the lower heating value of the thermal coal products based on the application received basis, the calorific value of the selected raw coal, and the actual solid waste emission yield.

[0045] Specifically, based on the production process, the particle size range of the raw coal to be separated is 200–13 mm, and the actual separation density is 1.8 g / cm³. 3Secondly, according to the structure of thermal coal products, the low-calorific-value coal slime product is part of the final sales products, as shown in Table 1. Based on the data in Appendix 1, the actual solid waste emission rate = 100 - 91.58 (Table 1, row 2, column 3) - 3.31 (Table 1, row 2, column 4) = 5.11%. The weighted average of the lower heating value of thermal coal products (including by-products) applied on a received basis = (23.72 × 91.58% + 19.06 × 3.31%) / (91.58% + 3.31%) = 23.56 MJ / kg (rounded to two decimal places). The actual increase in calorific value per unit of solid waste emission = (23.56 - 22.76) / 5.11 = 0.1566 (rounded to four decimal places).

[0046] Table 1: Actual Production Table

[0047]

[0048] In one embodiment of this application, obtaining the increase in the theoretical unit solid waste emission calorific value of thermal coal includes: determining the received basis lower heating value of the selected raw coal after theoretical gangue discharge based on the actual production table and the gangue discharge test record table, wherein the gangue discharge test record table is used to determine the theoretical solid waste emission yield and the theoretical calorific value of discharged gangue; retrieving the calorific value of the selected raw coal from the actual production table, and determining the increase in the received basis lower heating value of the selected raw coal after gangue discharge based on the calorific value of the selected raw coal and the received basis lower heating value of the selected raw coal after theoretical gangue discharge; determining the theoretical solid waste emission yield based on the gangue discharge test record table; and determining the increase in the theoretical unit solid waste emission calorific value of thermal coal based on the theoretical solid waste emission yield and the received basis lower heating value of the selected raw coal after gangue discharge.

[0049] Specifically, as shown in Table 2, the discharge test record table is for raw coal with a particle size of 200-13mm, calculated at 1.8g / cm³. 3 Based on the theoretical waste disposal test results conducted at the density level, and considering that low-calorific-value coal slime is part of the final marketable product, the theoretical solid waste discharge yield is the same as the theoretical waste disposal rate. The theoretical solid waste discharge yield = 3.95% (Table 2, row 3, column 3). The received basis lower heating value of the raw coal after theoretical waste disposal = (22.76 × 100% - 5.59 × 3.95%) / (100 - 3.95%) = 23.47 MJ / kg (rounded to two decimal places). Compared to before waste disposal, the increase in received basis lower heating value after waste disposal = 23.47 - 22.76 = 0.71 MJ / kg (rounded to two decimal places). The theoretical increase in unit solid waste discharge heating value = 0.71 / 3.95 = 0.1797 (rounded to four decimal places).

[0050] Table 2: Record Sheet for Waste Disposal Test

[0051]

[0052] In one embodiment of this application, the above-mentioned cost per ton of raw coal processing includes at least one of the following: material costs, fixed-amount wages, welfare expenses, electricity costs, depreciation costs, repair costs, gangue disposal costs, and other costs, where other costs refer to manufacturing expenses that cannot be included in the above items. Material costs: refer to materials consumed in the production process other than raw coal, mainly including accessories, grease, steel, water, etc.; Fixed-amount wages: wages of personnel related to production; Welfare expenses: welfare expenses extracted according to a certain percentage of wages in accordance with national financial regulations; Electricity costs: electricity costs include the cost of all electricity used in production; Depreciation expenses: depreciation expenses are the expenses accrued based on the total fixed assets of the specified items according to the prescribed depreciation coefficient, and are an allocation of fixed asset purchase costs; Repair costs: expenses pre-accrued according to regulations based on the total fixed assets for major equipment repairs; Gangue disposal costs: the cost of handling gangue generated after raw coal sorting.

[0053] In one embodiment of this application, obtaining the profit per ton of raw coal includes: obtaining the total cost and expenses, which includes the sales revenue of each product of the coal preparation plant, the cost of raw coal to be prepared, the total processing cost, taxes and fees, basic depreciation, major repair expenses, office expenses, travel expenses, and enterprise operation and management expenses; and determining the profit per ton of raw coal based on the total cost and expenses.

[0054] Specifically, since coal preparation production consumes a variety of energy sources with varying calorific values, this application defines coal containing 7000 kcal (29306 KJ) per kilogram (kg) as standard coal (ce), also known as standard coal. Strictly speaking, standard coal is a unit of heat, i.e., 1 kgce = 7000 kcal = 29306 KJ ≈ 29.3 MJ. The calorific values ​​and conversion relationships of several commonly used energy sources are shown in Table 3. When calculating the energy consumption per ton of raw coal, the actual unit consumption of each energy source (production statistics) can be multiplied by its respective standard coal conversion factor to obtain the standard coal consumption in kilograms (kgce / t), which can then be directly summed.

[0055] For energy types not included in Table 3, the following method can be used for calculation:

[0056] Water consumption per ton of raw coal can be converted into electricity consumption per ton (kWh / t) by water consumption cost (unit consumption, unit: yuan / t) and average electricity price (yuan / kw·h), and then converted into standard coal consumption per ton of raw coal (Kgce / t) according to the standard coal conversion coefficient in Appendix 3.

[0057] The heat consumption per ton of raw coal (for heating, ventilation, dust removal, etc.) can be calculated separately according to the type of heat source: For electric heating (such as air source heat pumps, electric boilers, etc.), the actual power consumption of the heat source (kW·h / h) and the amount of raw coal washed per hour (t / h) can be converted into power consumption per ton (kW·h / t), and then converted into standard coal consumption per ton (kgce / t) according to the standard coal conversion coefficient in Appendix 3; For gas-fired heating (such as gas boilers, etc.), the actual energy consumption per ton can be multiplied by the standard coal conversion coefficient (see Appendix 3) to obtain the standard coal consumption per ton (kgce / t); For mixed heating (such as air source heat pumps + gas boilers, etc.), the standard coal consumption per ton (kgce / t) can be calculated separately according to the above methods and then accumulated.

[0058] The compressed air consumption per ton of raw coal can be converted into power consumption per ton (kw·h / h) by the actual power consumption of the air compressor (kw·h / h) and the amount of raw coal washed per hour (t / h), and then converted into the standard coal consumption per ton of raw coal (Kgce / t) according to the standard coal conversion coefficient in Appendix 3.

[0059] Table 3: Calorific Values ​​and Conversion Relationships of Several Commonly Used Energy Sources

[0060]

[0061]

[0062] In one embodiment of this application, after determining at least one of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption per ton of raw coal as thermal coal preparation process indicators, the method further includes: storing the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption in a target database. The target database includes multiple data tables, and the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption in a different data table. This facilitates subsequent retrieval of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption from the data tables.

[0063] In one embodiment of this application, determining at least one of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit, and the above-mentioned raw coal energy consumption as thermal coal preparation process indicators includes: determining the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and the above-mentioned raw coal processing cost per ton as thermal coal preparation process indicators; determining the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and the above-mentioned raw coal processing cost per ton as thermal coal preparation process indicators includes: determining the weight corresponding to the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency as a first weight; determining the weight corresponding to the above-mentioned raw coal processing cost per ton as a second weight, wherein the above-mentioned second weight is less than the above-mentioned first weight; determining a first comprehensive indicator of thermal coal preparation process based on the above-mentioned first weight and the above-mentioned second weight; and determining the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton, and the above-mentioned raw coal processing cost per ton as thermal coal preparation process indicators. Determining at least one of the aforementioned profit per ton of raw coal and the aforementioned energy consumption per ton of raw coal as a process indicator for thermal coal preparation includes: determining the aforementioned thermal coal preparation process indicator based on the aforementioned thermal coal unit solid waste emission heat enhancement efficiency, the aforementioned raw coal processing cost per ton of raw coal, and the aforementioned raw coal profit per ton of raw coal; determining the aforementioned thermal coal preparation process indicator based on the aforementioned thermal coal unit solid waste emission heat enhancement efficiency, the aforementioned raw coal processing cost per ton of raw coal, and the aforementioned raw coal profit per ton of raw coal includes: determining the weight corresponding to the aforementioned thermal coal unit solid waste emission heat enhancement efficiency as a third weight; determining the weight corresponding to the aforementioned raw coal processing cost per ton of raw coal as a fourth weight, wherein the aforementioned fourth weight is less than the aforementioned third weight; determining the weight corresponding to the aforementioned raw coal profit per ton of raw coal as a fifth weight, wherein the aforementioned fifth weight is less than or equal to the aforementioned third weight; and determining the second comprehensive indicator for the thermal coal preparation process based on the aforementioned third weight, the aforementioned fourth weight, and the aforementioned fifth weight.

[0064] Specifically, given that the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption are determined as the thermal coal preparation process indicators, the weight corresponding to the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency is determined as the sixth weight; the weight corresponding to the above-mentioned raw coal processing cost per ton is determined as the seventh weight, wherein the seventh weight is less than the sixth weight; the weight corresponding to the above-mentioned raw coal profit per ton is determined as the eighth weight, wherein the eighth weight is less than the sixth weight; and the weight corresponding to the above-mentioned raw coal energy consumption per ton is determined as the ninth weight, wherein the ninth weight is less than the sixth weight. For example, the sixth weight is 30%, the seventh weight is 20%, the eighth weight is 30%, and the ninth weight is 20%. Combined with Table 4 or Table 5, the comprehensive indicators of the coal preparation plant's process operation effect are determined.

[0065] Table 4: Comprehensive Evaluation Index of Wet Coal Preparation Separation Technology

[0066]

[0067]

[0068] Table 5: Comprehensive Evaluation Index of Dry Coal Separation and Preparation Technology

[0069]

[0070]

[0071] In addition, other situations where the thermal coal preparation process indicators are determined include using the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal as thermal coal preparation process indicators; using the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and the above-mentioned profit per ton of raw coal as thermal coal preparation process indicators; and using the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and the above-mentioned energy consumption per ton of raw coal as thermal coal preparation process indicators. Since these situations are similar to the above, they will not be elaborated further.

[0072] In one embodiment of this application, after determining at least one of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption as thermal coal preparation process indicators, the method further includes: receiving a first predetermined operation, wherein the first predetermined operation refers to acting on the display device to select a target display identifier from a plurality of display identifiers, wherein each of the above-mentioned display identifiers is used to characterize one of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption per ton of raw coal, and the above-mentioned target display identifier is at least one of the plurality of above-mentioned display identifiers; receiving a second predetermined operation, wherein the second predetermined operation refers to acting on the above-mentioned display device to call the above-mentioned target database and select at least one of the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton of raw coal, the above-mentioned raw coal profit per ton of raw coal, and the above-mentioned raw coal energy consumption per ton of raw coal from the database. This facilitates operation and result observation by staff.

[0073] This application also provides an apparatus for determining the process parameters of thermal coal preparation. It should be noted that the apparatus for determining the process parameters of thermal coal preparation provided in this application can be used to execute the method for determining the process parameters of thermal coal preparation provided in this application. The apparatus for determining the process parameters of thermal coal preparation provided in this application will be described below.

[0074] Figure 2 This is a schematic diagram of a device for determining the process parameters of thermal coal preparation according to an embodiment of this application. Figure 2As shown, the device includes: an acquisition unit 10 and a determination unit 20; the acquisition unit 10 is used to acquire the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; the determination unit 20 is used to determine at least one of the above-mentioned thermal efficiency of solid waste emission per unit of thermal coal, the above-mentioned processing cost per ton of raw coal, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal as the thermal coal preparation process index.

[0075] In the aforementioned device, by acquiring the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and determining at least one of the above-mentioned heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal as the thermal coal preparation process index, the thermal coal preparation process index can better reflect the comprehensive performance of the thermal coal separation and processing process, thereby solving the problem of poor evaluation effect of the thermal coal separation and processing process in the existing scheme.

[0076] In one embodiment of this application, the acquisition unit includes a first acquisition module and a first determination module. The first acquisition module is used to acquire the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal. The first determination module is used to determine the heat enhancement efficiency of solid waste emissions per unit of thermal coal based on the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal.

[0077] Specifically, the theoretical increase in calorific value of solid waste emissions per unit of thermal coal needs to be calculated based on theoretical gangue discharge tests and production statistics of the raw coal. The calculation method is: [Weighted average of the received basis lower heating value of the raw coal after removing gangue with a density greater than the actual sorting density and the received basis lower heating value of the low-calorific-value coal slime included in the thermal coal sales product, minus the received basis lower heating value of the raw coal] / theoretical solid waste emission yield. To ensure the consistency of the raw coal corresponding to the data used in calculating the actual increase in calorific value of solid waste emissions per unit and the theoretical increase in calorific value of solid waste emissions per unit, the test coal samples used in the theoretical gangue discharge test must be sampled and retained for the same statistical period (it is recommended to do so monthly or according to a prescribed statistical period) as the calculation of the actual increase in calorific value of solid waste emissions per unit.

[0078] In one embodiment of this application, the first acquisition module includes a first retrieval submodule, a first determination submodule, a second determination submodule, and a third determination submodule. The first retrieval submodule is used to retrieve the yield of thermal coal products and the yield of low-calorific-value coal slime from the actual production table, wherein the actual production table is used to characterize the relationship between the yield of the selected raw coal and the calorific value of the selected raw coal, the relationship between the yield of the thermal coal products and the calorific value of the thermal coal, and the relationship between the yield of the low-calorific-value coal slime and the calorific value of the low-calorific-value coal slime. The first determination submodule is used to determine the actual solid waste emission yield based on the yield of the thermal coal products and the yield of the low-calorific-value coal slime. The second determination submodule is used to determine the weighted average of the applied received low-calorific-value of the thermal coal products from the actual production table and retrieve the calorific value of the selected raw coal. The third determination submodule is used to determine the increase in the actual unit solid waste emission calorific value of the thermal coal based on the weighted average of the applied received low-calorific-value of the thermal coal products, the calorific value of the selected raw coal, and the actual solid waste emission yield.

[0079] Specifically, based on the production process, the particle size range of the raw coal to be separated is 200–13 mm, and the actual separation density is 1.8 g / cm³. 3 Secondly, according to the structure of thermal coal products, the low-calorific-value coal slime product is part of the final sales products, as shown in Table 1. Based on the data in Appendix 1, the actual solid waste emission rate = 100 - 91.58 (Table 1, row 2, column 3) - 3.31 (Table 1, row 2, column 4) = 5.11%. The weighted average of the lower heating value of thermal coal products (including by-products) applied on a received basis = (23.72 × 91.58% + 19.06 × 3.31%) / (91.58% + 3.31%) = 23.56 MJ / kg (rounded to two decimal places). The actual increase in calorific value per unit of solid waste emission = (23.56 - 22.76) / 5.11 = 0.1566 (rounded to four decimal places).

[0080] In one embodiment of this application, the first acquisition module includes a fourth determining submodule, a second retrieving submodule, a fifth determining submodule, and a sixth determining submodule. The fourth determining submodule is used to determine the theoretical received lower heating value of the raw coal after gangue removal based on the actual production table and the gangue removal test record table. The second retrieving submodule is used to retrieve the calorific value of the raw coal after gangue removal from the actual production table and determine the increase in the received lower heating value of the raw coal after gangue removal based on the calorific value of the raw coal and the theoretical received lower heating value of the raw coal after gangue removal. The fifth determining submodule is used to determine the theoretical solid waste emission yield based on the gangue removal test record table. The sixth determining submodule is used to determine the theoretical unit solid waste emission calorific value increase of the thermal coal based on the theoretical solid waste emission yield and the increase in the received lower heating value of the raw coal after gangue removal.

[0081] Specifically, as shown in Table 2, the discharge test record table is for raw coal with a particle size of 200-13mm, calculated at 1.8g / cm³. 3 Based on the theoretical waste disposal test results conducted at the density level, and considering that low-calorific-value coal slime is part of the final marketable product, the theoretical solid waste discharge yield is the same as the theoretical waste disposal rate. The theoretical solid waste discharge yield = 3.95% (Table 2, row 3, column 3). The received basis lower heating value of the raw coal after theoretical waste disposal = (22.76 × 100% - 5.59 × 3.95%) / (100 - 3.95%) = 23.47 MJ / kg (rounded to two decimal places). Compared to before waste disposal, the increase in received basis lower heating value after waste disposal = 23.47 - 22.76 = 0.71 MJ / kg (rounded to two decimal places). The theoretical increase in unit solid waste discharge heating value = 0.71 / 3.95 = 0.1797 (rounded to four decimal places).

[0082] In one embodiment of this application, the above-mentioned cost per ton of raw coal processing includes at least one of the following: material costs, fixed-amount wages, welfare expenses, electricity costs, depreciation costs, repair costs, gangue disposal costs, and other costs, where other costs refer to manufacturing expenses that cannot be included in the above items. Material costs: refer to materials consumed in the production process other than raw coal, mainly including accessories, grease, steel, water, etc.; Fixed-amount wages: wages of personnel related to production; Welfare expenses: welfare expenses extracted according to a certain percentage of wages in accordance with national financial regulations; Electricity costs: electricity costs include the cost of all electricity used in production; Depreciation expenses: depreciation expenses are the expenses accrued based on the total fixed assets of the specified items according to the prescribed depreciation coefficient, and are an allocation of fixed asset purchase costs; Repair costs: expenses pre-accrued according to regulations based on the total fixed assets for major equipment repairs; Gangue disposal costs: the cost of handling gangue generated after raw coal sorting.

[0083] In one embodiment of this application, the acquisition unit includes a second acquisition module and a second determination module. The second acquisition module is used to acquire the total cost, which includes the sales revenue of each product of the coal preparation plant, the cost of raw coal to be prepared, the total processing cost, taxes, basic depreciation, major repair costs, office expenses, travel expenses, and enterprise operation and management expenses. The second determination module is used to determine the profit per ton of raw coal based on the total cost.

[0084] Specifically, since coal preparation production consumes a variety of energy sources with varying calorific values, this application defines coal containing 7000 kcal (29306 KJ) per kilogram (kg) as standard coal (ce), also known as standard coal. Strictly speaking, standard coal is a unit of heat, i.e., 1 kgce = 7000 kcal = 29306 KJ ≈ 29.3 MJ. The calorific values ​​and conversion relationships of several commonly used energy sources are shown in Table 3. When calculating the energy consumption per ton of raw coal, the actual unit consumption of each energy source (production statistics) can be multiplied by its respective standard coal conversion factor to obtain the standard coal consumption in kilograms (kgce / t), which can then be directly summed.

[0085] In one embodiment of this application, the device further includes a storage unit. After determining at least one of the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption as thermal coal preparation process indicators, the storage unit is used to store the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption in a target database. The target database includes multiple data tables, and the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption are stored in different data tables. This facilitates subsequent retrieval of the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption from the data tables.

[0086] In one embodiment of this application, the determining unit includes a third determining module, which is used to determine the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and the above-mentioned raw coal processing cost as the above-mentioned thermal coal preparation process indicators; the third determining module includes a seventh determining submodule, an eighth determining submodule, and a ninth determining submodule, the seventh determining submodule being used to determine the weight corresponding to the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency as a first weight; the eighth determining submodule being used to determine the weight corresponding to the above-mentioned raw coal processing cost as a second weight, wherein the above-mentioned second weight is less than the above-mentioned first weight; the ninth determining submodule being used to determine the first comprehensive indicator of the thermal coal preparation process based on the above-mentioned first weight and the above-mentioned second weight; the determining unit includes a fourth determining module, which is used to determine the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency as a first comprehensive indicator; the fourth determining module is used to determine the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency as a first comprehensive indicator of the thermal coal preparation process. Thermal efficiency, the aforementioned processing cost per ton of raw coal, and the aforementioned profit per ton of raw coal are determined as the aforementioned indicators for the thermal coal preparation process. The fourth determination module includes a tenth determination submodule, an eleventh determination submodule, a twelfth determination submodule, and a thirteenth determination submodule. The tenth determination submodule is used to determine the weight corresponding to the aforementioned thermal coal unit solid waste emission heat enhancement efficiency as the third weight. The eleventh determination submodule is used to determine the weight corresponding to the aforementioned processing cost per ton of raw coal as the fourth weight, wherein the aforementioned fourth weight is less than the aforementioned third weight. The twelfth determination submodule is used to determine the weight corresponding to the aforementioned profit per ton of raw coal as the fifth weight, wherein the aforementioned fifth weight is less than or equal to the aforementioned third weight. The thirteenth determination submodule is used to determine the second comprehensive indicator for the thermal coal preparation process based on the aforementioned third weight, the aforementioned fourth weight, and the aforementioned fifth weight.

[0087] Specifically, when the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption are determined as the thermal coal preparation process indicators, the weight corresponding to the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency is determined as the sixth weight; the weight corresponding to the above-mentioned raw coal processing cost per ton is determined as the seventh weight, wherein the seventh weight is less than the sixth weight; the weight corresponding to the above-mentioned raw coal profit per ton is determined as the eighth weight, wherein the eighth weight is less than the sixth weight; and the weight corresponding to the above-mentioned raw coal energy consumption per ton is determined as the ninth weight, wherein the ninth weight is less than the sixth weight. For example, the sixth weight is 40%, and the seventh, eighth, and ninth weights are all 20%, as shown in Table 4 or Table 5. If the reference values ​​for the above-mentioned thermal coal unit solid waste emission heat enhancement efficiency and raw coal processing cost per ton are both excellent, and the reference values ​​for the above-mentioned raw coal profit and raw coal energy consumption per ton are both good, then the overall evaluation level is excellent.

[0088] In one embodiment of this application, the device further includes a first receiving unit and a second receiving unit. After determining at least one of the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption as thermal coal preparation process indicators, the first receiving unit is used to receive a first predetermined operation, which refers to acting on the display device to select a target display identifier from a plurality of display identifiers, wherein each of the above-mentioned display identifiers is used to characterize one of the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption, and the above-mentioned target display identifier is at least one of the plurality of above-mentioned display identifiers; the second receiving unit is used to receive a second predetermined operation, which refers to acting on the above-mentioned display device to call the above-mentioned target database and select at least one of the above-mentioned thermal coal unit solid waste emission heating efficiency, the above-mentioned raw coal processing cost per ton, the above-mentioned raw coal profit per ton, and the above-mentioned raw coal energy consumption from the database.

[0089] The device for determining the above-mentioned thermal coal preparation process parameters includes a processor and a memory. The acquisition unit and the determination unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0090] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the poor evaluation performance of existing solutions for thermal coal sorting and processing technologies.

[0091] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0092] This invention provides a computer-readable storage medium storing a program that, when executed by a processor, implements the method for determining the above-mentioned thermal coal preparation process parameters.

[0093] This invention provides a processor for running a program, wherein the program executes the method for determining the parameters of the power coal preparation process.

[0094] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps: obtaining the thermal efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; and determining at least one of the above-mentioned thermal efficiency of solid waste emissions per unit of thermal coal, the above-mentioned processing cost per ton of raw coal, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal as a thermal coal preparation process indicator. The device described herein can be a server, PC, PAD, mobile phone, etc.

[0095] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps: obtaining the thermal efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; and determining at least one of the above-mentioned thermal efficiency of solid waste emission per unit of thermal coal, the above-mentioned processing cost per ton of raw coal, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal as a thermal coal preparation process index.

[0096] To enable those skilled in the art to better understand the technical solution of this application, the technical solution and technical effects of this application will be described below in conjunction with specific embodiments.

[0097] Example

[0098] An embodiment of this application also provides a scheme for determining the process parameters of thermal coal preparation, which includes the following steps:

[0099] Step 1: The particle size range of the raw coal to be separated is 200-13mm, and the actual separation density is 1.8g / cm³. 3 Secondly, according to the structure of thermal coal products, the low-calorific-value coal slime product is part of the final sales products, as shown in Table 1. Based on the final sales product structure of the coal preparation plant, the low-calorific-value coal slime is part of the final sales products. According to the data in Appendix 1, the actual solid waste emission rate = 100 - 91.58 (Table 1, row 2, column 3) - 3.31 (Table 1, row 2, column 4) = 5.11%. The weighted average of the received basis lower heating value of thermal coal products (including by-products) = (23.72 × 91.58% + 19.06 × 3.31%) / (91.58% + 3.31%) = 23.56 MJ / kg (rounded to two decimal places). The actual increase in calorific value per unit of solid waste emission = (23.56 - 22.76) / 5.11 = 0.1566 (rounded to four decimal places).

[0100] Step 2: As shown in Table 2, the discharge test record table is based on the raw coal particle size of 200-13mm, calculated at 1.8g / cm³. 3Based on the theoretical gangue discharge test results conducted by density, and considering that low-calorific-value coal slime is part of the final marketable product, the theoretical solid waste discharge yield is the theoretical gangue discharge rate. The theoretical solid waste discharge yield = 3.95% (3rd row and 3rd column of Appendix Table 2). The received basis lower heating value of the selected raw coal after theoretical gangue discharge = (22.76×100%-5.59×3.95%) / (100-3.95%) = 23.47 MJ / kg (rounded to 2 decimal places). Compared with the raw coal before gangue discharge, the increase in received basis lower heating value after gangue discharge = 23.47-22.76 = 0.71 MJ / kg (rounded to 2 decimal places). The theoretical unit solid waste discharge heating value increase = 0.71 / 3.95 = 0.1797 (rounded to 4 decimal places).

[0101] Step 3: The heat enhancement efficiency of solid waste emissions per unit of thermal coal = 0.1566 / 0.1797 * 100% = 87.15% (rounded to two decimal places);

[0102] Step 4: Obtain the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal. The processing cost per ton of raw coal mentioned above refers to…, and the energy consumption per ton of raw coal mentioned above refers to…;

[0103] Step 5: Given the above-mentioned thermal coal unit solid waste emission heating efficiency, above-mentioned raw coal processing cost per ton, above-mentioned raw coal profit per ton, and above-mentioned raw coal energy consumption as the thermal coal preparation process indicators, determine the weight corresponding to the above-mentioned thermal coal unit solid waste emission heating efficiency as the sixth weight; determine the weight corresponding to the above-mentioned raw coal processing cost per ton as the seventh weight, wherein the seventh weight is less than the sixth weight; determine the weight corresponding to the above-mentioned raw coal profit per ton as the eighth weight, wherein the eighth weight is less than the sixth weight; determine the weight corresponding to the above-mentioned raw coal energy consumption per ton as the ninth weight, wherein the ninth weight is less than the sixth weight. For example, the sixth weight is 40%, and the seventh, eighth, and ninth weights are all 20%, as shown in Table 4 or Table 5. If the reference values ​​for the above-mentioned thermal coal unit solid waste emission heating efficiency and raw coal processing cost per ton are both excellent, and the reference values ​​for the above-mentioned raw coal profit and raw coal energy consumption per ton are both good, then the overall evaluation level is excellent.

[0104] By obtaining the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and determining at least one of these factors as the thermal coal preparation process index, the thermal coal preparation process index can better reflect the comprehensive performance of the thermal coal separation and processing process, thereby solving the problem of poor evaluation effect of the thermal coal separation and processing process in the existing scheme.

[0105] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units described above can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0107] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0108] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0109] If the aforementioned integrated units are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0110] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0111] 1) The method for determining the process indicators of thermal coal preparation in this application obtains the heat enhancement efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal. At least one of the above-mentioned heat enhancement efficiency of solid waste emission per unit of thermal coal, the above-mentioned processing cost per ton of raw coal, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal is determined as the process indicator of thermal coal preparation. This allows the process indicators of thermal coal preparation to better reflect the comprehensive performance of thermal coal separation and processing technology, thereby solving the problem of poor evaluation effect of thermal coal separation and processing technology in existing schemes.

[0112] 2) The device for determining the process indicators of thermal coal preparation in this application obtains the heat enhancement efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and determines at least one of the above-mentioned heat enhancement efficiency of solid waste emission per unit of thermal coal, the above-mentioned processing cost per ton of raw coal, the above-mentioned profit per ton of raw coal, and the above-mentioned energy consumption per ton of raw coal as the process indicators of thermal coal preparation. This allows the process indicators of thermal coal preparation to better reflect the comprehensive performance of thermal coal separation and processing technology, thereby solving the problem of poor evaluation effect of thermal coal separation and processing technology in existing solutions.

[0113] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for determining the process parameters of thermal coal preparation, characterized in that, include: To obtain the heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal; At least one of the following factors is determined as the thermal coal preparation process index: the heat enhancement efficiency of solid waste emission per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal. Obtaining the heat enhancement efficiency of solid waste emissions per unit of thermal coal includes: obtaining the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal; and determining the heat enhancement efficiency of solid waste emissions per unit of thermal coal based on the actual increase in calorific value of solid waste emissions per unit of thermal coal and the theoretical increase in calorific value of solid waste emissions per unit of thermal coal. Obtaining the actual increase in calorific value of solid waste emissions per unit of thermal coal includes: retrieving the yield of thermal coal products and the yield of low-calorific-value coal slime from the actual production table, wherein the actual production table is used to characterize the relationship between the yield of raw coal and the calorific value of the raw coal, the yield of thermal coal products and the calorific value of the thermal coal, and the yield of low-calorific-value coal slime and the calorific value of the low-calorific-value coal slime; determining the actual solid waste emission yield based on the yield of thermal coal products and the yield of low-calorific-value coal slime; determining the weighted average of the applied-based lower heating value of thermal coal products from the actual production table, and retrieving the calorific value of the raw coal; and determining the actual increase in calorific value of solid waste emissions per unit of thermal coal based on the weighted average of the applied-based lower heating value of thermal coal products, the calorific value of the raw coal, and the actual solid waste emission yield. Obtaining the theoretical increase in calorific value of solid waste emissions per unit of thermal coal includes: determining the received lower heating value of the selected raw coal after waste removal based on the actual production schedule and waste removal test record; retrieving the calorific value of the selected raw coal from the actual production schedule; determining the increase in the received lower heating value of the selected raw coal after waste removal based on the calorific value of the selected raw coal and the received lower heating value of the selected raw coal after waste removal based on the actual production schedule; determining the theoretical solid waste emission yield based on the waste removal test record; and determining the theoretical increase in calorific value of solid waste emissions per unit of thermal coal based on the theoretical solid waste emission yield and the increase in the received lower heating value of the selected raw coal after waste removal based on the actual production schedule. The heat-increasing efficiency of solid waste emissions per unit of thermal coal and the processing cost per ton of raw coal are determined as the thermal coal preparation process indicators; or, the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal and the profit per ton of raw coal are determined as the thermal coal preparation process indicators.

2. The method according to claim 1, characterized in that, The cost of processing one ton of raw coal includes at least one of the following: material costs, fixed wages, welfare expenses, electricity costs, depreciation costs, repair costs, and coal waste disposal costs.

3. The method according to claim 1, characterized in that, Profit per ton of raw coal includes: Obtain the total cost and expenses, which include the sales revenue of each product of the coal preparation plant, the cost of raw coal to be prepared, the total processing cost, taxes and fees, basic depreciation, major repair expenses, office expenses, travel expenses, and enterprise operation and management expenses; The profit per ton of raw coal is determined based on the total cost.

4. The method according to claim 1, characterized in that, After determining at least one of the following as the thermal coal preparation process indicators: the heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal: The heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal are stored in a target database. The target database includes multiple data tables, and the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal are stored in different data tables.

5. The method according to claim 1, characterized in that, The heat enhancement efficiency of solid waste emissions per unit of thermal coal and the processing cost per ton of raw coal are determined as the thermal coal preparation process indicators, including: The weight corresponding to the heat enhancement efficiency of solid waste emissions per unit of thermal coal is determined as the first weight. The weight corresponding to the processing cost per ton of raw coal is determined as the second weight, wherein the second weight is less than the first weight; Based on the first weight and the second weight, the first comprehensive index for thermal coal preparation process is determined. or, The heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, and the profit per ton of raw coal are determined as the coal preparation process indicators for thermal coal, including: The weight corresponding to the heat enhancement efficiency of solid waste emissions per unit of thermal coal is determined as the third weight; The weight corresponding to the processing cost per ton of raw coal is determined as the fourth weight, wherein the fourth weight is less than the third weight; The weight corresponding to the profit per ton of raw coal is determined as the fifth weight, wherein the fifth weight is less than or equal to the third weight; The second comprehensive index for thermal coal preparation process is determined based on the third weight, the fourth weight, and the fifth weight.

6. The method according to claim 4, characterized in that, After determining at least one of the following as the thermal coal preparation process indicators: the heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal: Receive a first predetermined operation, which refers to acting on a display device to select a target display identifier from a plurality of display identifiers, wherein each of the display identifiers is used to characterize one of the heat-increasing efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal, and the target display identifier is at least one of the plurality of display identifiers; Receive a second predetermined operation, which refers to acting on the display device to call the target database and select at least one of the following from the database: the thermal efficiency of solid waste emission of power coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal.

7. A device for determining the process parameters of thermal coal preparation, characterized in that, The apparatus for determining the process parameters of thermal coal preparation uses the method for determining the process parameters of thermal coal preparation according to any one of claims 1 to 6, and the apparatus comprises: The acquisition unit is used to acquire the heat enhancement efficiency of solid waste emissions per unit of thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal. The determining unit is used to determine at least one of the following as the thermal coal preparation process indicators: the unit solid waste emission heat enhancement efficiency of the thermal coal, the processing cost per ton of raw coal, the profit per ton of raw coal, and the energy consumption per ton of raw coal.

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