Environmental load monitoring method and system for whole cement production process

Abstract

The invention relates to an environmental load monitoring method and system for the whole cement production process. The method comprises the following steps: firstly, collecting multi-section monitoring data, and preprocessing the multi-section monitoring data to obtain a multi-section monitoring data set; constructing a life cycle data list; an environmental load calculation model is constructed through the evaluation method and the evaluation indexes; then, an environment load calculation model is utilized, and an environment load calculation result is obtained through calculation of the multi-section monitoring data set and the life cycle data list; and finally, analyzing an environment load calculation result, and generating a monitoring report. Compared with the prior art, the method has the advantages that real-time supervision and analysis on the environmental influence in the whole cement production process are realized, and data support is provided for emission reduction improvement in the whole cement production process.

Description

Technical Field

[0001] The invention relates to the technical field of cement production, and in particular to a method and system for monitoring environmental load in the whole cement production process. Background Art

[0002] At present, cement, as a basic raw material for industrial development, is used in many key fields such as various infrastructure construction and construction projects, and the demand is huge. However, with the development of the times, environmental issues have become the focus of global attention, and the cement industry is facing severe pressure to reduce emissions.

[0003] In order to effectively deal with the prominent pollution emission problem in the cement industry, one of the commonly used emission reduction methods is to replace traditional raw material and fuel consumption through the process of co-disposal of waste.

[0004] In addition to seeking breakthroughs in the preparation technology of low environmental load cement, it is urgent to establish an environmental supervision system covering the entire process of cement production to promote low-emission production of cement.

[0005] However, the current informatization construction of cement production enterprises is relatively lagging, making it difficult to achieve real-time acquisition of energy flow and material flow data in the production process, which further leads to the inability to accurately calculate and monitor the environmental load in the production process. This is also the key technical bottleneck in the monitoring and control of the entire cement preparation process. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a method and system for monitoring the environmental load of the whole cement production process.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] According to one aspect of the present invention, a method for monitoring environmental load of the whole cement production process is provided, comprising the following steps:

[0009] S1, collecting multi-section monitoring data and preprocessing it to obtain a multi-section monitoring data set;

[0010] S2, build a life cycle data inventory;

[0011] S3. Construct an environmental load calculation model based on the evaluation methods and evaluation indicators;

[0012] S4, using the environmental load calculation model, the environmental load calculation results are calculated from the multi-stage monitoring data set and the life cycle data list;

[0013] S5. Analyze the environmental load calculation results and generate a monitoring report.

[0014] As a preferred technical solution, the multi-section monitoring data in S1 includes raw material consumption data, energy consumption data and environmental emission data of each section.

[0015] As a preferred technical solution, the various sections include: raw material mining section, raw material transportation section, secondary solid waste processing section, raw material grinding section, clinker calcining section and cement grinding section.

[0016] As a preferred technical solution, the process of constructing a life cycle data inventory in S2 is: first construct a life cycle inventory, then supplement the life cycle inventory according to the emission detection record data, and finally form a life cycle data inventory.

[0017] As the preferred technical solution, the evaluation method in S3 uses the CML2001 environmental assessment method and the collaborative disposal allocation method, and the evaluation indicators include global warming environmental potential, acidification potential, human toxicity potential, eutrophication potential, abiotic resource depletion potential and photochemical pollution potential.

[0018] As a preferred technical solution, the environmental load calculation model in S3 also considers the division of upstream and downstream responsibilities for solid waste disposal. Specifically, the environmental impact of the downstream service or co-disposal process of solid waste is integrated into the cement production process, and the difference between the environmental impact of co-disposal and the environmental impact of conventional disposal is integrated into the environmental load. The specific formula is:

[0019] F product =F upper-summary +F ord-disposal ·m waste

[0020] F cement =F cement-net +m waste-process ·(F transport +F secdonary-processing

[0021] +F co-disppsal -F ord-disposal )

[0022] In the formula, F product The environmental impact that needs to be calculated for producing one unit of main product; upper-summary The actual total environmental impact of producing one unit of main product in the upstream process of solid waste; F ord-disposal The theoretical environmental impact of one unit of solid waste in ordinary disposal mode; m waste The mass of solid waste generated when producing one unit of main product; F cement The environmental impact that needs to be calculated for producing one unit of cement; cement-net The net value of the environmental impact of producing one unit of cement without taking into account any solid waste environmental impact; m waste-processThe mass of solid waste required to produce one unit of cement; F transport The environmental impact of transporting one unit of solid waste; secdonary-processing The environmental impact of secondary treatment of one unit of solid waste; co-disposal The direct environmental impact caused by the joint disposal of one unit of solid waste by the mud plant.

[0023] As a preferred technical solution, the specific steps for calculating the environmental load calculation results in S4 are: first, set the environmental load calculation boundary of the entire cement production process; then, within the environmental load calculation boundary, input the multi-stage monitoring data set and the life cycle data list into the environmental load calculation model for evaluation; then characterize, normalize and weight the evaluation results to finally obtain the environmental load calculation results.

[0024] As a preferred technical solution, the environmental load calculation results in S4 include material consumption results, key pollutant emission results, environmental load value results of each work section, environmental load results of each indicator and comprehensive environmental load results.

[0025] As a preferred technical solution, the process of analyzing the environmental load calculation results in S5 includes: analyzing the environmental load calculation results of each work section to obtain the main working conditions of resource utilization and the main working conditions that cause environmental load; analyzing the indicator sensitivity in the environmental load results of each indicator to obtain the raw materials, energy or process factors that have the greatest impact on the environmental load in the entire cement production process.

[0026] According to another aspect of the present invention, there is provided an environmental load monitoring system for the whole process of cement production, the system applies the environmental load monitoring method for the whole process of cement production as described above, the system comprises a data acquisition module, a model building module, an environmental load calculation module and an analysis and monitoring module;

[0027] Among them, the data acquisition module is used to collect multi-section monitoring data and pre-process it to obtain a multi-section monitoring data set;

[0028] The model building module is used to build a life cycle data inventory; and to build an environmental load calculation model based on the evaluation method and evaluation indicators;

[0029] The environmental load calculation module is used to obtain the environmental load calculation result by using the environmental load calculation model and the multi-stage monitoring data set and the life cycle data list;

[0030] The analysis and monitoring module is used to analyze the environmental load calculation results and generate a monitoring report.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. In the present invention, firstly, the multi-section monitoring data is collected and preprocessed to obtain the multi-section monitoring data set; then the life cycle data list is constructed; and the environmental load calculation model is constructed by the evaluation method and the evaluation index; then the environmental load calculation model is used to calculate the environmental load calculation result from the multi-section monitoring data set and the life cycle data list; finally, the environmental load calculation result is analyzed to generate a monitoring report. Through this method, the real-time monitoring and analysis of the environmental load of the entire cement production process is realized, which is convenient for improving the production plan according to the calculation results.

[0033] 2. The multi-section monitoring data collected in the present invention includes raw material consumption data, energy consumption data and environmental emission data of each section. The sections include: raw material mining section, raw material transportation section, secondary solid waste treatment section, raw material grinding section, clinker calcination section and cement grinding section. Through the data collection of multiple sections, a comprehensive energy and environmental load analysis is provided, and the efficiency and effect of environmental management are improved.

[0034] 3. In the environmental load calculation model established in the present invention, the upstream and downstream responsibilities of solid waste disposal are taken into consideration. The environmental impact of the downstream service or co-disposal process of solid waste is integrated into the cement production process, and the difference between the co-disposal environmental impact and the conventional disposal environmental impact is integrated into the environmental load, so that the obtained environmental load assessment is more accurate and reliable.

[0035] 4. The environmental load calculation results in this invention include material consumption results, key pollutant emission results, environmental load value results of each work section, environmental load results of each indicator and comprehensive environmental load results. By storing and uploading the calculation results to the central control system of the cement enterprise, the information is made transparent, which facilitates the enterprise to conduct real-time supervision and analysis of the environmental impact of the production process and improve production efficiency.

[0036] 5. In the present invention, the environmental load calculation results are analyzed, and the process includes: analyzing the environmental load calculation results of each section to obtain the main working conditions of resource use and the main working conditions that cause environmental load; analyzing the sensitivity of the indicators in the environmental load results of each indicator to obtain the raw materials, energy or process factors that have the greatest impact on the environmental load in the entire cement production process. Through analysis, the key links that cause environmental load in the process can be identified, thereby guiding the improvement of cement production plans and the optimization of processes, and promoting cement production with low environmental load. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the steps of the method for monitoring the environmental load of the entire cement production process in the present invention;

[0038] Figure 2 Flow chart of the environmental load monitoring system for the whole cement production process in the embodiment;

[0039] Figure 3 The figure is a flow chart of the environmental load calculation of the whole cement production process in the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] Currently, cement is used in many key areas such as various infrastructure construction and construction projects. At the same time, with the development of the times, environmental issues have become increasingly the focus of global attention, and the cement industry is facing pressure to reduce emissions.

[0042] From the perspective of pollution control, the cement production process is often accompanied by a large amount of pollutant emissions, such as dust, sulfur dioxide, nitrogen oxides and other harmful substances. However, the current application lacks a comprehensive environmental supervision system covering the entire cement production process. The internal information management system of the enterprise is still imperfect, making it difficult to achieve real-time acquisition of data on the input, conversion and consumption of energy flows in the production process, and the procurement, transportation, warehousing and use of material flows, which further leads to the inability of enterprises to accurately calculate and monitor the environmental load in the production process.

[0043] There is an urgent need for a method that can accurately and in real time grasp all kinds of data information in multiple stages of cement production, from raw material mining, processing and grinding, clinker calcination to finished cement grinding and delivery, and calculate and analyze the environmental load based on it, so as to provide solid data support and decision-making basis for promoting low-emission production of cement.

[0044] In this application, an environmental monitoring system and method for the entire cement production process under a collaborative disposal process is proposed, which is of great significance in helping cement companies to achieve intelligent monitoring of the production process, identify the key links in the process that cause environmental load, and thus guide the improvement of the process and promote the preparation of low environmental load cement materials.

[0045] Example 1

[0046] In this embodiment, a method for monitoring the environmental load of the entire cement production process is applied. Figure 1 As shown, the following steps are included:

[0047] S1, collecting multi-section monitoring data and preprocessing it to obtain a multi-section monitoring data set;

[0048] S2, build a life cycle data inventory;

[0049] S3. Construct an environmental load calculation model based on the evaluation methods and evaluation indicators;

[0050] S4, using the environmental load calculation model, the environmental load calculation results are calculated from the multi-stage monitoring data set and the life cycle data list;

[0051] S5. Analyze the environmental load calculation results and generate a monitoring report.

[0052] In this method, the multi-section monitoring data in S1 includes raw material consumption data, energy consumption data and environmental emission data of each section. Each section includes: raw material mining section, raw material transportation section, secondary solid waste treatment section, raw material grinding section, clinker calcination section and cement grinding section.

[0053] In this method, the process of constructing the life cycle data inventory in S2 is: first construct the life cycle inventory, then supplement the life cycle inventory according to the emission detection record data, and finally form the life cycle data inventory.

[0054] In this method, the evaluation method in S3 uses the CML2001 environmental evaluation method and the co-disposal allocation method, and the evaluation indicators include global warming environmental potential, acidification potential, human toxicity potential, eutrophication potential, abiotic resource depletion potential and photochemical pollution potential. The environmental load calculation model in S3 also considers the upstream and downstream responsibilities of solid waste disposal, specifically: the environmental impact of the service or co-disposal process of solid waste in the downstream is integrated into the cement production process, and the difference between the environmental impact of co-disposal and the environmental impact of conventional disposal is integrated into the environmental load. The specific formula is:

[0055] F product =F upper-summary +F ord-disposal ·m waste

[0056] F cement =F cement-net +m waste-process ·(F transport +F secdonary-processing +F co-disposal -F ord-disposal )

[0057] In the formula, F product The environmental impact that needs to be calculated for producing one unit of main product; upper-summary The actual total environmental impact of producing one unit of main product in the upstream process of solid waste; F ord-disposal The theoretical environmental impact of one unit of solid waste in ordinary disposal mode; m waste The mass of solid waste generated when producing one unit of main product; Fcement The environmental impact that needs to be calculated for producing one unit of cement; cement-net The net value of the environmental impact of producing one unit of cement without taking into account any solid waste environmental impact; m waste-process The mass of solid waste required to produce one unit of cement; F transport The environmental impact of transporting one unit of solid waste; secdonary-processing The environmental impact of secondary treatment of one unit of solid waste; co-disposal The direct environmental impact caused by the joint disposal of one unit of solid waste by the mud plant.

[0058] In this method, the specific steps of calculating the environmental load calculation results in S4 are: first, set the environmental load calculation boundary of the entire cement production process; then, within the environmental load calculation boundary, input the multi-stage monitoring data set and the life cycle data list into the environmental load calculation model for evaluation; then characterize, normalize and weight the evaluation results, and finally obtain the environmental load calculation results. The environmental load calculation results in S4 include material consumption results, key pollutant emission results, environmental load value results of each stage, environmental load results of each indicator and comprehensive environmental load results.

[0059] In this method, the process of analyzing the environmental load calculation results in S5 includes: analyzing the environmental load calculation results of each work section to obtain the main working conditions of resource use and the main working conditions that cause environmental load; analyzing the indicator sensitivity in the environmental load results of each indicator to obtain the raw materials, energy or process factors that have the greatest impact on the environmental load in the entire cement production process.

[0060] In this embodiment, the method is applied to monitor the environmental load of the whole cement production process. Figure 2 As shown, first set the data collection frequency or interval, send data request instructions to the production management system, and collect data such as material consumption, energy consumption, environmental emissions, product performance and process parameters in the cement production process. The data collection method includes fixed collection frequency (day / week / month) and selected collection time interval. According to the selected data collection method, send data request instructions to the production management system of each section of the cement enterprise to retrieve the raw material consumption, energy consumption and environmental emissions data of each section. The specific implementation is as follows:

[0061] Send a request to the digital mining system used for raw material mining to retrieve data such as the output, material consumption and energy consumption of raw materials mined in the cement enterprise during the collection period;

[0062] Send a request to the MES system used for the secondary solid waste treatment section to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials during the collection period;

[0063] Send a request to the kiln mill expert system for the raw material grinding section to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, and raw material quality during the collection period;

[0064] Send a request to the MES system used for clinker calcination to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, waste heat power generation, process parameters and clinker quality during the collection period;

[0065] Send a request to the kiln mill expert system used for cement grinding to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, and cement quality during the collection period;

[0066] Send a request to the real-time pollution monitoring system covering each work section to retrieve the pollution emission monitoring data of each work section within the collection time.

[0067] In this embodiment, after the collected data is cleaned and preprocessed, it is used for the calculation work described later.

[0068] In this embodiment, based on the life cycle assessment theory and taking into account the environmental load distribution relationship of solid waste in the upstream and downstream under the coordinated waste disposal process, an environmental load calculation model is constructed to obtain the environmental load data of cement products.

[0069] The environmental load calculation model was constructed. The process of establishing the model and using the model for calculation is as follows: Figure 3 As shown, the specific process is as follows:

[0070] First, the boundary setting is carried out: clarify the boundary of environmental load calculation, that is, the starting point and focus of the whole process of cement production. In the present invention, the calculation boundary covers the links of raw material mining, raw material transportation, raw material grinding, coal powder grinding, clinker calcination and cement grinding;

[0071] Then, inventory analysis is conducted: data on energy consumption, raw materials / fuels, auxiliary materials and pollutants at each stage are collected, mainly from cement enterprises’ production / emission test records and literature technical data, and summarized as the basis for calculation and analysis;

[0072] Then the environmental load calculation is carried out: the CML2001 environmental assessment model is selected as the calculation method, which provides mapping values ​​of resource consumption, environmental emissions and specific resource and environmental impact types to quantify the values ​​of each environmental load indicator, characterize, normalize and weight it. In addition, the calculation stage takes into account the particularity of the cement co-production process, involving the division of upstream and downstream responsibilities for solid waste disposal.

[0073] In this embodiment, the environmental load calculation result data is transmitted to the central control platform of the cement enterprise for visual online monitoring and diagnosis. The environmental load calculation result data is presented in the form of visual charts to show the data related to the environmental impact caused by a ton of cement, which specifically includes:

[0074] Material consumption and key pollutants (carbon dioxide, sulfur dioxide, nitrogen oxides, dust, etc.) emitted per ton of cement produced during the data collection period;

[0075] Environmental load values ​​of each process section in the production of one ton of cement during the data collection period, including raw material grinding, coal powder preparation, clinker calcination and cement grinding;

[0076] The total environmental load of each ton of cement production and the comprehensive environmental load value during the data collection period. The indicators include global warming potential, acidification potential, human toxicity potential, eutrophication potential and abiotic resource depletion potential;

[0077] In this embodiment, a multi-dimensional analysis and optimization of resource consumption, energy consumption, environmental emissions and performance indicators of the entire cement production process is generated, and a comparative analysis of different production plans is provided to obtain suggestions for improving the production plan, thereby providing a scientific basis and technical support for environmental management and production optimization of cement production. The specific process includes:

[0078] Identification of key improvement links: This analysis step is based on the environmental load calculation results of each link in cement production, as well as the specific energy consumption, material consumption and pollutant emissions, to identify hot spots of resource use and key links with high environmental loads, and determine the production links that need priority intervention and improvement.

[0079] Indicator sensitivity analysis: This analysis step will analyze the sensitivity of changes in various environmental indicators in the improvement link to determine which factors in which production links (such as the input of a certain alternative raw material / fuel or the use of a certain process) have the greatest impact on the environmental load, and guide the focus of regulation in the production process.

[0080] Scheme simulation generation optimization: This analysis step combines the results of key improvement link identification and indicator sensitivity analysis to simulate different production schemes, and evaluates the environmental performance of each scheme by comparing and analyzing the environmental load data before and after the implementation of the scheme, thereby providing a production strategy with low environmental load and optimal cement performance.

[0081] In summary, this method can collect data such as raw material flow, energy flow, product flow and emission flow in all links of cement production from raw material mining to cement delivery in real time, and establish an environmental load calculation model based on the life cycle assessment theory in the field of environmental protection, and quantify the environmental load caused by each link of cement production in terms of resource consumption, human toxicity and greenhouse effect under the collaborative disposal process. The calculation results are stored and uploaded to the central control system of the cement enterprise, which is convenient for the enterprise to monitor and analyze the environmental impact of the production process in real time, and the production plan can be improved according to the calculation results, thereby realizing the preparation of high-performance cement materials with low environmental load.

[0082] Example 2

[0083] In this embodiment, an environmental load monitoring system for the entire cement production process is applied, the system comprising a data acquisition module, a model building module, an environmental load calculation module and an analysis and monitoring module;

[0084] Among them, the data acquisition module is used to collect multi-section monitoring data and pre-process it to obtain a multi-section monitoring data set; the model construction module is used to construct a life cycle data list; and the environmental load calculation model is constructed by the evaluation method and evaluation indicators; the environmental load calculation module is used to use the environmental load calculation model to calculate the environmental load calculation results from the multi-section monitoring data set and the life cycle data list; the analysis and monitoring module is used to analyze the environmental load calculation results and generate a monitoring report.

[0085] In this embodiment, the system is used to monitor the environmental load of the entire cement production process. Figure 2 As shown, first select the data collection method, including fixed collection frequency (day / week / month) and selected collection time interval. According to the selected data collection method, send data request instructions to the production management system of each section of the cement enterprise to retrieve the raw material consumption, energy consumption and environmental emission data of each section. The specific implementation is as follows:

[0086] Send a request to the digital mining system used for raw material mining to retrieve data such as the output, material consumption and energy consumption of raw materials mined in the cement enterprise during the collection period;

[0087] Send a request to the MES system used for the secondary solid waste treatment section to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials during the collection period;

[0088] Send a request to the kiln mill expert system for the raw material grinding section to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, and raw material quality during the collection period;

[0089] Send a request to the MES system used for clinker calcination to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, waste heat power generation, process parameters and clinker quality during the collection period;

[0090] Send a request to the kiln mill expert system used for cement grinding to retrieve data such as material consumption and energy consumption, transportation tools and distances of various raw and auxiliary materials, and cement quality during the collection period;

[0091] Send a request to the real-time pollution monitoring system covering each work section to retrieve the pollution emission monitoring data of each work section within the collection time.

[0092] In this embodiment, the collected data is cleaned and preprocessed before being used for the calculation work described below.

[0093] In this embodiment, the life cycle assessment theory is introduced into the result calculation step, and an environmental load calculation model is constructed. The calculation steps are as follows: Figure 3 As shown, the following steps are included:

[0094] First, the boundary setting is carried out: clarify the boundary of environmental load calculation, that is, the starting point and focus of the whole process of cement production. In the present invention, the calculation boundary covers the links of raw material mining, raw material transportation, raw material grinding, coal powder grinding, clinker calcination and cement grinding;

[0095] Then, inventory analysis is conducted: data on energy consumption, raw materials / fuels, auxiliary materials and pollutants at each stage are collected, mainly from cement enterprises’ production / emission test records and literature technical data, and summarized as the basis for calculation and analysis;

[0096] Then, the environmental load calculation is performed: the CML2001 environmental assessment model is selected as the calculation method. This method provides mapping values ​​of resource consumption, environmental emissions and specific resource and environmental impact types to quantify the values ​​of each environmental load indicator. In addition, the particularity of the cement co-production process is taken into account during the calculation stage, which involves the division of upstream and downstream responsibilities for solid waste disposal. The present invention incorporates the environmental impact of the downstream service / co-disposal process of solid waste into the cement production process, and the difference between the environmental impact of co-disposal and the environmental impact of conventional disposal will be regarded as the environmental benefit of the cement production process, that is:

[0097] F product =F upper-summary +F ord-disposal ·m waste

[0098] F cement =F cement-net +m waste-orocess ·(F transport +F secdonary-processing +Fco-disposal -F ord-disposal )

[0099] In the formula, F product The environmental impact that needs to be calculated for producing one unit of main product; upper-summary The actual total environmental impact of producing one unit of main product in the upstream process of solid waste; F ord-disposal The theoretical environmental impact of one unit of solid waste in ordinary disposal mode; m waste The mass of solid waste generated when producing one unit of main product; F cement The environmental impact that needs to be calculated for producing one unit of cement; cement-net The net value of the environmental impact of producing one unit of cement without taking into account any solid waste environmental impact; m waste-process The mass of solid waste required to produce one unit of cement; F transport The environmental impact of transporting one unit of solid waste; secdonary-processing The environmental impact of secondary treatment of one unit of solid waste; co-disposal The direct environmental impact of the disposal of one unit of solid waste by the mud plant, such as incineration or landfill, is determined by the actual local conditions.

[0100] In this embodiment, the environmental load calculation model is used to calculate the environmental load calculation results from multiple work-section monitoring data sets, and then the environmental load calculation results of the entire cement production process are uploaded to the central control system of the cement enterprise and integrated into the environmental monitoring module. This module runs together with the equipment operation module, inventory management module, quality control real-time module and fault handling monitoring module to achieve multi-dimensional monitoring of the cement plant.

[0101] In this embodiment, data related to the environmental impact caused by one ton of cement is presented in a visual chart, specifically covering:

[0102] Material consumption and key pollutants (carbon dioxide, sulfur dioxide, nitrogen oxides, dust, etc.) emitted per ton of cement produced during the data collection period;

[0103] Environmental load values ​​of each process section in the production of one ton of cement during the data collection period, including raw material grinding, coal powder preparation, clinker calcination and cement grinding;

[0104] The total environmental load of each ton of cement production and the comprehensive environmental load value during the data collection period. The indicators include global warming potential, acidification potential, human toxicity potential, eutrophication potential and abiotic resource depletion potential;

[0105] In this embodiment, the environmental load calculation results are analyzed to generate a monitoring report. Specifically, based on the environmental load calculation results of the entire cement production process, further analysis is performed to improve the production plan and provide scientific basis and technical support for environmental management and production optimization of cement production. The analysis path is as follows:

[0106] Identification of key improvement links: This analysis step is based on the environmental load calculation results of each link in cement production, as well as the specific energy consumption, material consumption and pollutant emissions, to identify hot spots of resource use and key links with high environmental loads, and determine the production links that need priority intervention and improvement.

[0107] Indicator sensitivity analysis: This analysis step will analyze the sensitivity of changes in various environmental indicators in the improvement link to determine which factors in which production links (such as the input of a certain alternative raw material / fuel or the use of a certain process) have the greatest impact on the environmental load, and guide the focus of regulation in the production process.

[0108] Scheme simulation generation optimization: This analysis step combines the results of key improvement link identification and indicator sensitivity analysis to simulate different production schemes, and evaluates the environmental performance of each scheme by comparing and analyzing the environmental load data before and after the implementation of the scheme, thereby providing a production strategy with low environmental load and optimal cement performance.

[0109] In summary, this system can collect data such as raw material flow, energy flow, product flow and emission flow in all links of cement production from raw material mining to cement delivery in real time, and establish an environmental load calculation model based on the life cycle assessment theory in the field of environmental protection, and quantify the environmental load caused by each link of cement production in terms of resource consumption, human toxicity and greenhouse effect under the collaborative disposal process. The calculation results are stored and uploaded to the central control system of the cement enterprise, which is convenient for the enterprise to monitor and analyze the environmental impact of the production process in real time, and the production plan can be improved according to the calculation results, thereby realizing the preparation of high-performance cement materials with low environmental load.

[0110] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for monitoring the environmental load of the entire cement production process, characterized in that: The following steps are involved: S1, collecting multi-section monitoring data and preprocessing it to obtain a multi-section monitoring data set; S2, build a life cycle data inventory; S3. Construct an environmental load calculation model based on the evaluation methods and evaluation indicators; S4, using the environmental load calculation model, the environmental load calculation results are calculated from the multi-stage monitoring data set and the life cycle data list; S5. Analyze the environmental load calculation results and generate a monitoring report.

2. The method for monitoring the environmental load of the whole cement production process according to claim 1, characterized in that: The multi-section monitoring data in S1 includes raw material consumption data, energy consumption data and environmental emission data of each section.

3. The method for monitoring the environmental load of the whole cement production process according to claim 2, characterized in that: The various sections include: raw material mining section, raw material transportation section, secondary solid waste treatment section, raw material grinding section, clinker calcining section and cement grinding section.

4. The method for monitoring the environmental load of the whole cement production process according to claim 1, characterized in that: The process of constructing the life cycle data list in S2 is: first construct the life cycle list, then supplement the life cycle list according to the emission detection record data, and finally form the life cycle data list.

5. The method for monitoring the environmental load of the whole cement production process according to claim 1, characterized in that: The evaluation method in S3 uses the CML2001 environmental evaluation method and the coordinated disposal allocation method, and the evaluation indicators include global warming environmental potential, acidification potential, human toxicity potential, eutrophication potential, abiotic resource depletion potential and photochemical pollution potential.

6. The method for monitoring environmental load of the whole cement production process according to claim 1, characterized in that: The environmental load calculation model in S3 also considers the division of upstream and downstream responsibilities for solid waste disposal, specifically: the environmental impact of the downstream service or co-disposal process of solid waste is integrated into the cement production process, and the difference between the environmental impact of co-disposal and the environmental impact of conventional disposal is integrated into the environmental load. The specific formula is: F product =F upper-summary +F ord-disposal ·m waste F cement =F cement-net +m waste-process ·(F transport +F secdonary-processing +F co-disposal -F ord-disposal ) In the formula, F product The environmental impact that needs to be calculated for producing one unit of main product; upper-summary The actual total environmental impact of producing one unit of main product in the upstream process of solid waste; F ord-disposal The theoretical environmental impact of one unit of solid waste in ordinary disposal mode; m waste The mass of solid waste generated when producing one unit of main product; F cement The environmental impact that needs to be calculated for producing one unit of cement; cement-net The net value of the environmental impact of producing one unit of cement without taking into account any solid waste environmental impact; m waste-process The mass of solid waste required to produce one unit of cement; F transport The environmental impact of transporting one unit of solid waste; secdonary-processing The environmental impact of secondary treatment of one unit of solid waste; co-disposal The direct environmental impact caused by the joint disposal of one unit of solid waste by the mud plant.

7. The method for monitoring the environmental load of the whole cement production process according to claim 1, characterized in that: The specific steps for calculating the environmental load calculation result in S4 are: first, setting the environmental load calculation boundary of the entire cement production process; then, within the environmental load calculation boundary, inputting the multi-stage monitoring data set and the life cycle data list into the environmental load calculation model for evaluation; and then characterizing, normalizing and weighting the evaluation results to finally obtain the environmental load calculation results.

8. The method for monitoring environmental load of the whole cement production process according to claim 1, characterized in that: The environmental load calculation results in S4 include material consumption results, key pollutant emission results, environmental load value results of each work section, environmental load results of each indicator and comprehensive environmental load results.

9. The method for monitoring environmental load of the whole cement production process according to claim 1, characterized in that: The process of analyzing the environmental load calculation results in S5 includes: analyzing the environmental load calculation results of each work section to obtain the main working conditions of resource use and the main working conditions that cause environmental load; analyzing the indicator sensitivity in the environmental load results of each indicator to obtain the raw materials, energy or process factors that have the greatest impact on the environmental load in the entire cement production process.

10. An environmental load monitoring system for the entire cement production process, characterized in that: The system works by applying the environmental load monitoring method for the whole cement production process as described in any one of claims 1 to 9, and the system includes a data acquisition module, a model building module, an environmental load calculation module and an analysis and monitoring module; The data acquisition module is used to collect multi-section monitoring data and pre-process it to obtain a multi-section monitoring data set; The model building module is used to build a life cycle data inventory; and to build an environmental load calculation model based on the evaluation method and evaluation indicators; The environmental load calculation module is used to calculate the environmental load calculation result by using the environmental load calculation model from the multi-stage monitoring data set and the life cycle data list; The analysis and monitoring module is used to analyze the environmental load calculation results and generate a monitoring report.

Images