Method for obtaining source composition spectrum data of volatile organic compounds from pollution sources

Abstract

The present invention discloses a method for acquiring source component spectrum data of volatile organic compounds (VOCs) from a pollution source, which can improve accuracy. The acquisition method comprises: determining n raw material type sub-processes of a process to be tested; acquiring the raw material unit to be tested of each raw material type sub-process; determining a set of VOC components to be tested according to the raw material unit to be tested of each raw material type sub-process; acquiring organized emission component spectrum data of VOCs according to the set of VOC components to be tested of each raw material type sub-process; acquiring unorganized emission component spectrum data of VOCs according to the set of VOC components to be tested of each raw material type sub-process; acquiring a first comprehensive source component spectrum according to the organized emission component spectrum data of VOCs and the unorganized emission component spectrum data of VOCs of each raw material type sub-process; and acquiring second comprehensive source component spectrum data according to the first comprehensive source component spectrum data of all raw material type sub-processes.

Description

Technical Field

[0001] The present invention relates to the field of volatile organic compounds from pollution sources, and more particularly to a method for acquiring source component spectrum data of volatile organic compounds from pollution sources. Background Art

[0002] The compositional profiles of volatile organic compounds (VOCs) from pollution sources effectively reflect differences between emission sources, are crucial for developing species-based emission inventories, and provide essential data for receptor and air quality models. Obtaining the compositional profiles of key pollution sources is crucial for studying the causes of air pollution and developing pollution prevention and control strategies.

[0003] VOCs emissions from industrial pollution sources include both organized and unorganized emissions from emission tubes. The production processes and raw material types of pollution sources are also complex and diverse, making the establishment of industry VOCs source profiles more difficult. While there are numerous reported research results on industrial VOCs source profiles, the lack of a unified method for establishing industry VOCs source profiles has led to varying degrees of quality. Common problems include: First, using the source profile of a local emission link to represent the emission characteristics of the entire pollution source, which lacks comprehensiveness; and second, simply adding and averaging the source profiles of each emission link to represent the emission characteristics of the entire pollution source, ignoring the differences in emission intensity across different emission links.

[0004] Therefore, how to scientifically classify and quantify the source profiles of both organized and unorganized VOCs within each VOC emission process is a key scientific issue in establishing industry VOC source profiles. Currently, no researchers have conducted such discussions. Therefore, accurately characterizing the source profiles of VOCs at pollution sources is an urgent problem to be solved. Summary of the Invention

[0005] An object of embodiments of the present invention is to solve the above-mentioned problems and provide advantages as will be described later.

[0006] The present invention provides a method for obtaining volatile organic compound source component spectrum data from a pollution source, including:

[0007] Determine n raw material type sub-processes involved in the process to be tested, where n is greater than or equal to 1; obtain the raw material unit to be tested corresponding to each raw material type sub-process; determine the corresponding volatile organic compound component set to be tested based on the raw material unit to be tested of each raw material type sub-process; obtain the volatile organic compound organized emission component spectrum data corresponding to the organized emission link based on the volatile organic compound component set to be tested of each raw material type sub-process; obtain the volatile organic compound unorganized emission component spectrum data corresponding to the unorganized emission link based on the volatile organic compound component set to be tested of each raw material type sub-process; obtain the corresponding first comprehensive source component spectrum data based on the volatile organic compound organized emission component spectrum data and the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process; obtain the second comprehensive source component spectrum data for the process to be tested based on the first comprehensive source component spectrum data of all raw material type sub-processes.

[0008] The beneficial effects that can be achieved by the embodiments of the present invention include:

[0009] Compared with the existing technology that uses local emission links or simple arithmetic averaging to obtain the VOCs source component spectrum of a specific production process, the embodiment of the present invention comprehensively considers the emission mode and emission intensity of different emission links, the VOCs contribution of different raw material types, etc., and scientifically classifies and quantifies the source component spectrum data. The second comprehensive source component spectrum data obtained can more accurately characterize the characteristics of the VOCs source component spectrum of the pollution source. In summary, the method provided by the embodiment of the present invention can improve the accuracy of the obtained pollution source VOCs source component spectrum data, thereby making the established pollution source VOCs source component spectrum more accurate.

[0010] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A flow chart of a method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0012] Figure 2 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0013] Figure 3 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0014] Figure 4 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0015] Figure 5 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0016] Figure 6 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application;

[0017] Figure 7 This is another flowchart of the method for acquiring source component spectrum data of volatile organic compounds from pollution sources according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0019] The terms "first" and "second" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. It should also be noted that, in the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. Furthermore, the term "including" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0020] In addition to the above, it is still important to emphasize that references to "embodiments" herein mean that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of such phrases in various locations in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] like Figure 1 As shown, the embodiment of the present application provides a method for obtaining source component spectrum data of volatile organic compounds from a pollution source, comprising steps S101-S107:

[0022] S101. Determine n sub-processes of raw material types involved in the process to be tested.

[0023] It should be noted that raw materials mainly refer to the raw materials used for processing products of the enterprise to be tested. Volatile organic compounds will be produced in the process of processing these raw materials. The raw materials can specifically be coatings, inks, adhesives, diluents, wetting fluids and cleaning agents, etc. The raw material type can be water-based, solvent-based, light-curing, etc. Specifically, the raw material type sub-process involved in the process to be tested can be obtained through market research. Exemplarily, the process to be tested can be a production process, such as the gravure printing process in the printing industry, the wooden furniture coating process in the furniture manufacturing industry, etc. After determining the process to be tested, the raw material type sub-process can be further determined. Specifically, taking the process to be tested as the gravure printing process as an example, n can be 2, and accordingly, the n raw material type sub-processes include two types: water-based raw material type process and solvent-based raw material process.

[0024] S102: Obtain the raw material unit to be tested corresponding to each raw material type sub-process.

[0025] After determining the raw material type sub-process, the companies to be tested can be determined based on the raw material type sub-process. Specifically, one or more companies can be selected for testing, and the production process of the company to be tested must include n raw material type sub-processes of the process to be tested.

[0026] It should be noted that each raw material type sub-process corresponds to a raw material unit to be tested (m (m is greater than or equal to 1) raw materials. For example, when m is greater than 1, the raw material unit to be tested corresponding to the solvent-based raw material process may include multiple raw materials such as coatings, inks, adhesives, and diluents. Regarding the specific selection of the raw material unit to be tested, those skilled in the art can decide based on actual conditions. For example, there are four types of solvent-based raw materials in the production operations of the enterprise to be tested, namely coatings, inks, adhesives, and diluents. However, when determining the raw material unit to be tested, coatings, inks, and adhesives can be selected from these three.

[0027] In general, each raw material contained in the raw material unit for each raw material type sub-process is a raw material actually used in the production operations of the company under test. In certain embodiments, the raw material unit for a solvent-based raw material process includes paint, ink, adhesive, and thinner. These raw materials are all raw materials actually used in the production operations of the company under test and may generate corresponding volatile organic compounds.

[0028] S103 : Determine a corresponding set of volatile organic compound components to be tested according to the raw material units to be tested of each raw material type sub-process.

[0029] By investigating the main components of the raw materials, the corresponding set of volatile organic compound components to be tested is determined. For example, if the raw materials of the raw material unit to be tested include ink, the ink is prone to produce volatile organic compounds such as toluene, ethyl acetate, and isopropyl alcohol during the factory processing. Therefore, it can be determined that the set of volatile organic compound components to be tested needs to include substances such as toluene, ethyl acetate, and isopropyl alcohol.

[0030] The main components of each raw material can be obtained through the material's MSDS (Material Safety Data Sheet), i.e., the chemical safety data sheet. In certain embodiments, the set of volatile organic compound components to be tested should include but not be limited to the volatile organic compounds of the raw materials obtained through the MSDS.

[0031] It's easy to understand that the set of VOC components to be measured for each raw material type sub-process needs to be determined comprehensively based on all raw materials in the corresponding measured raw material unit. For example, in some examples, when the measured raw material unit corresponding to a solvent-based raw material includes multiple raw materials such as A, B, and C, the corresponding set of VOC components to be measured needs to be determined comprehensively based on these three raw materials.

[0032] In certain embodiments, when the process to be tested is a gravure printing process, the n raw material type sub-processes may specifically include a water-based raw material gravure printing process and a solvent-based raw material gravure printing process. The raw material unit to be tested for the water-based raw material gravure printing process includes a solvent and a diluent, and the raw material unit to be tested for the solvent-based raw material gravure printing process also includes a solvent and a diluent. Based on this, the volatile organic compound components included in the volatile organic compound component set to be tested for the raw material unit to be tested for the solvent-based raw material gravure printing process can be shown in Table 1 below; the volatile organic compound components included in the volatile organic compound component set to be tested for the raw material unit to be tested for the water-based raw material gravure printing process can also be shown in Table 1 below.

[0033] Table 1

[0034]

[0035]

[0036] S104. Obtaining volatile organic compound organized emission component spectrum data corresponding to the organized emission link according to the set of volatile organic compound components to be measured in each raw material type sub-process.

[0037] How to obtain the volatile organic compound organized emission component spectrum data based on the set of volatile organic compound components to be measured can be achieved by those skilled in the art according to existing technologies. However, in some embodiments, it can also be achieved as follows:

[0038] Specifically, taking the acquisition of organized emission component spectrum data of volatile organic compounds of water-based raw material type processes as an example, the following steps F1-F4 are included: F1. Sampling the organized emission link of volatile organic compounds at the exhaust chimney of the enterprise to be tested to obtain the first test sample corresponding to the water-based raw material type process; F2. Testing the content of each volatile organic compound component to be tested in the set of volatile organic compound components to be tested in the first test sample; F3. Obtaining the weight of each volatile organic compound component to be tested in the first test sample according to the content of each volatile organic compound component to be tested; F4. Obtaining the corresponding organized emission component spectrum data of volatile organic compounds according to the weights of all volatile organic compound components to be tested.

[0039] Illustratively, based on the embodiment shown in Table 1, the obtained volatile organic compound organized emission component spectrum data can be shown in Table 2.

[0040] Table 2

[0041]

[0042]

[0043]

[0044]

[0045] S105. Obtain the volatile organic compound fugitive emission component spectrum data corresponding to the fugitive emission link according to the set of volatile organic compound components to be measured in each raw material type sub-process.

[0046] How to obtain the volatile organic compound fugitive emission component spectrum data based on the volatile organic compound component set to be measured can be achieved by those skilled in the art according to existing technologies. However, in some embodiments, it can also be achieved as follows:

[0047] Specifically, taking the acquisition of volatile organic compound unorganized emission component spectrum data of water-based raw material type processes as an example, the following steps G1-G4 are included: G1. Sampling the unorganized emission link in the volatile organic compound unorganized emission area of ​​the enterprise to be tested to obtain a second test sample corresponding to the water-based raw material type process; G2. Testing the content of each volatile organic compound component to be tested in the set of volatile organic compound components to be tested in the second test sample; G3. Obtaining the weight of each volatile organic compound component to be tested in the second test sample according to the content of each volatile organic compound component to be tested; G4. Obtaining the corresponding volatile organic compound unorganized emission component spectrum data according to the weights of all volatile organic compound components to be tested.

[0048] For example, based on the embodiment shown in Table 1, the obtained volatile organic compound unorganized emission component spectrum data can also be shown in Table 2.

[0049] S106. Obtain corresponding first comprehensive source component spectrum data according to the volatile organic compound organized emission component spectrum data and the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process.

[0050] S107 , obtaining second comprehensive source component spectrum data corresponding to the process to be tested based on the first comprehensive source component spectrum data of all raw material type sub-processes.

[0051] According to the above-mentioned second comprehensive source component spectrum data, the corresponding second comprehensive source component spectrum can be established. It can be seen that in the process of establishing the VOCs source component spectrum of the process to be tested (production process) by applying the method of the embodiment of the present invention, the source component spectrum data is collected and analyzed based on the main emission links and chemical components; according to the VOCs emission characteristics of the pollution source, the source component spectrum is classified into organized and unorganized categories, and the VOCs source component spectrum data of the raw material type sub-process corresponding to the process to be tested is obtained through the emission weight; further, the source component spectrum data is quantified and aggregated through the VOCs contribution weights of the different raw material type sub-processes of the process to be tested to obtain the comprehensive VOCs source component spectrum of the production process.

[0052] Compared with the existing technology that uses local emission links or simple arithmetic averaging to obtain the VOCs source component spectrum of a specific production process, the embodiment of the present invention comprehensively considers the emission mode and emission intensity of different emission links, the VOCs contribution of different raw material types, etc., and scientifically classifies and quantifies the source component spectrum. The second comprehensive source component spectrum data obtained can more accurately characterize the characteristics of the VOCs source component spectrum of the pollution source. In summary, the method provided by the embodiment of the present invention can improve the accuracy of the obtained pollution source VOCs source component spectrum data, thereby making the established pollution source VOCs source component spectrum more accurate.

[0053] In some embodiments, specifically, Figure 2 As shown, step S106 includes the following steps S301-S305:

[0054] S301. Obtain the weight of the volatile organic compound organized emission corresponding to each raw material type sub-process in the organized emission link;

[0055] S302. Obtain the weight of the volatile organic compound fugitive emission corresponding to each raw material type sub-process in the fugitive emission link;

[0056] S303, calculating the product of the volatile organic compound organized emission component spectrum data of each raw material type sub-process and the first source component spectrum data of the volatile organic compound organized emission weight;

[0057] S304, calculating the product of the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process and the second source component spectrum data of the volatile organic compound unorganized emission weight;

[0058] S305 . Add the product of the first source component spectrum data and the product of the second source component spectrum data of each raw material type sub-process to obtain corresponding first comprehensive source component spectrum data.

[0059] Specifically, taking the kth (k is greater than or equal to 1, and less than or equal to n) raw material type sub-process among n raw material type sub-processes as an example, its corresponding first comprehensive source component spectrum data can be calculated according to the following formula (1):

[0060] SP k =SP k有组织 ×WT k有组织 +SP k无组织 ×WT k无组织 Formula (1);

[0061] Among them, SP k is the first comprehensive source component spectrum data of the kth raw material type sub-process, SP k有组织 is the volatile organic compound organized emission component spectrum data of the kth raw material type sub-process, SP k无组织 is the volatile organic compound unorganized emission component spectrum data of the kth raw material type sub-process, WT k有组织 is the weight of the volatile organic compound organized emission of the kth raw material type sub-process, WT k无组织 is the weight of the volatile organic compound unorganized emission of the kth raw material type sub-process.

[0062] It should be noted that the weights of organized emissions of volatile organic compounds and unorganized emissions of volatile organic compounds can be calculated and obtained based on the VOCs emissions of the actual test process; when there is a lack of VOCs emission accounting data for the test process, reference can be made to existing literature research results or empirical values.

[0063] For example, based on the embodiment shown in Table 2, the obtained volatile organic compound organized emission contribution weight and volatile organic compound unorganized emission weight can be shown in Table 3.

[0064] Table 3

[0065] Solvent-based gravure printing process Water-based raw material gravure printing process <![CDATA[VOCs fugitive emission weight (WT k无组织 )]]> 62.50％ 75.00％ <![CDATA[VOCs organized emission weight (WT k有组织 )]]> 37.50％ 25.00％

[0066] Based on the embodiment shown in Table 3, the first comprehensive source component spectrum data obtained for the solvent-based raw material gravure printing process and the water-based raw material gravure printing process can be seen in Table 4.

[0067] Table 4

[0068]

[0069]

[0070]

[0071]

[0072] In some embodiments, as Figure 3 As shown, step S301, obtaining the weight of the volatile organic compound organized emission corresponding to each raw material type sub-process in the organized emission link; including steps S401-S403:

[0073] S401. Obtain the organized emission of volatile organic compounds corresponding to each raw material type sub-process in the organized emission link;

[0074] S402, obtaining the total amount of volatile organic compound emissions corresponding to each raw material type sub-process;

[0075] S403. Obtain a corresponding weight of the organized volatile organic compound emissions according to the ratio of the organized volatile organic compound emissions of each raw material type sub-process to the total volatile organic compound emissions.

[0076] More specifically, in some embodiments, among n raw material type sub-processes, the weight of the volatile organic compound organized emission and the weight of the volatile organic compound unorganized emission of the kth raw material type sub-process can be calculated according to the following formula (2):

[0077] WT k有组织 =E k有组织 / E k总 Formula (2);

[0078] Among them, E k总 is the total amount of volatile organic compound emissions corresponding to the kth raw material type sub-process, E k有组织 is the organized emission of volatile organic compounds of the kth raw material type sub-process.

[0079] Regarding the contribution weight of organized volatile organic compound emissions and the weight of unorganized volatile organic compound emissions in the embodiment of Table 3, they can be calculated based on the organized volatile organic compound emissions, unorganized volatile organic compound emissions and total volatile organic compound emissions shown in Table 5.

[0080] Table 5

[0081] Solvent-based gravure printing process Water-based raw material gravure printing process <![CDATA[Total VOCs emissions (E k总 )]]> 0.32 0.8 <![CDATA[VOCs fugitive emission amount (E k无组织 )]]> 20％ 60％ <![CDATA[Organized emissions of VOCs (E k有组织 )]]> 12％ 20％ <![CDATA[VOCs fugitive emission weight (WT k无组织 )]]> 62.50％ 75.00％ <![CDATA[Weight of Organized Emission of VOCs (WT k有组织 )]]> 37.50％ 25.00％

[0082] In some embodiments, as Figure 4 As shown, step S302, obtaining the weight of the volatile organic compound unorganized emission corresponding to each raw material type sub-process in the unorganized emission link; including steps S501-S503:

[0083] S501. Obtain the volatile organic compound fugitive emissions corresponding to each raw material type sub-process in the fugitive emission link;

[0084] S502. Obtain the total amount of volatile organic compound emissions corresponding to each raw material type sub-process;

[0085] S503. Obtain corresponding volatile organic compound fugitive emission weights according to the ratio of the volatile organic compound fugitive emission of each raw material type sub-process to the total volatile organic compound emission.

[0086] More specifically, in some embodiments, among n raw material type sub-processes, the weight of the volatile organic compound fugitive emission of the kth raw material type sub-process can be calculated according to the following formula (3):

[0087] WT k无组织 =E k无组织 / E k总 =1-WT k有组织 Formula (3)

[0088] Among them, E k总 is the total amount of volatile organic compound emissions corresponding to the kth raw material type sub-process, E k有组织 is the organized emission of volatile organic compounds of the kth raw material type sub-process, E k无组织 is the unorganized emission of volatile organic compounds of the kth raw material type sub-process.

[0089] Based on the examples shown in Tables 1-3, the fugitive VOC emissions obtained for the solvent-based and water-based gravure printing processes can be found in Table 5. It will be readily understood that the organized, fugitive, and total VOC emissions are calculated within the same statistical period. The statistical period can be preset based on actual needs, for example, one month, two months, or one year.

[0090] In some embodiments, as Figure 5 As shown, step S401, obtaining the organized emission of volatile organic compounds corresponding to each raw material type sub-process in the organized emission link; including steps S601-S604:

[0091] S601. Obtain the emission concentration of volatile organic compounds at the exhaust pipe outlet in the organized emission link in each raw material type sub-process:

[0092] S602. Obtain the emission flow rate of volatile organic compounds at the exhaust pipe outlet in the organized emission link in each raw material type sub-process:

[0093] S603, obtaining the production time of the raw material unit to be tested in each raw material type sub-process within the statistical period;

[0094] S604. Obtain the corresponding organized emission of volatile organic compounds according to the product of the emission concentration, emission flow rate and production time of each raw material type sub-process.

[0095] More specifically, in some embodiments, among n raw material type sub-processes, the organized emission of volatile organic compounds of the kth raw material type sub-process can be calculated according to the following formula (4):

[0096] E k有组织 =C k出 ×Q k出 ×T formula (4)

[0097] Among them, C k出 is the emission concentration of volatile organic compounds at the exhaust pipe outlet in the organized emission link in the kth raw material type sub-process, Q k出 is the emission flow rate of volatile organic compounds at the exhaust chimney outlet in the organized emission link in the kth raw material type sub-process, and T is the production time in the statistical period.

[0098] In some embodiments, the fugitive volatile organic compound emissions of each raw material type sub-process are equal to the difference between the total volatile organic compound emissions and the organized volatile organic compound emissions.

[0099] Specifically, among n raw material type sub-processes, the VOC unorganized emission of the kth raw material type sub-process can be calculated by the following formula (5):

[0100] E k无组织 =E k总 -E k有组织 Formula (5).

[0101] In some embodiments, as Figure 6 As shown, step S402, obtaining the total amount of volatile organic compound emissions corresponding to each raw material type sub-process; including steps S701-S704:

[0102] S701. Obtain the total amount of volatile organic compounds generated after using all raw materials of the raw material unit to be tested in each raw material type sub-process during the statistical period;

[0103] S702. Obtain the total amount of volatile organic compounds recovered after using all raw materials of the raw material unit under test in each raw material type sub-process during the statistical period. The total amount of volatile organic compounds recovered specifically refers to the amount of volatile organic compounds generated after the tested enterprise uses and recycles all raw materials of the raw material unit under test, mainly including the amount of volatile organic compounds that enter the produced products and the amount of volatile organic compounds that are recycled through recycling measures.

[0104] S703. Obtain the amount of volatile organic compounds removed by the waste gas treatment facility corresponding to each raw material type sub-process during the statistical period. For example, the waste gas treatment facility may be a VOCs waste gas incineration treatment facility.

[0105] S704: Obtain the total amount of volatile organic compound emissions corresponding to each raw material type sub-process based on the difference between the total amount of volatile organic compound generated and the total amount of recovered and removed amounts.

[0106] More specifically, among n raw material type sub-processes, the total volatile organic compound emissions corresponding to the kth raw material type sub-process can be calculated according to the following formula:

[0107] E k总 =E k投用 -E k回收 -E k去除 (6);

[0108] Among them, E k投用 E is the total amount of volatile organic compounds generated after using all raw materials of the raw material unit to be tested in the kth raw material type sub-process during the statistical period; k回收 E is the total amount of volatile organic compounds recovered after all raw materials of the raw material unit to be tested are used in the kth raw material type sub-process during the statistical period; k去除 It is the amount of volatile organic compounds removed by the waste gas treatment facilities in the kth raw material type sub-process during the statistical period.

[0109] Furthermore, the total amount of volatile organic compounds generated after using all raw materials of the raw material unit to be tested in the kth raw material type sub-process can be calculated as follows:

[0110] In the kth raw material type sub-process, the usage amount of each raw material in the raw material unit to be tested during the production operation of the tested enterprise is obtained; the raw material unit to be tested includes m raw materials;

[0111] Obtain the proportion of volatile organic compounds generated during the use of each raw material in the corresponding raw material;

[0112] Calculate the product of the usage and usage ratio of each raw material to obtain the volatile organic compound generation corresponding to each raw material;

[0113] The volatile organic compound generation amounts of all raw materials of the raw material unit to be tested in the kth raw material type sub-process are added together to obtain the total volatile organic compound generation amount after all raw materials of the raw material unit to be tested are used in the kth raw material type sub-process.

[0114] More specifically, it can be calculated according to formula (7):

[0115] E k投用 =∑(W ki ×WF ki ) (7);

[0116] Among them, W ki WF is the usage of raw material i in the raw material unit to be tested of the kth raw material type sub-process during the statistical period; ki The usage ratio of the volatile organic compound generation of raw material i to the total mass of raw material i in the raw material unit to be tested can be obtained from the corresponding product quality inspection report or MSDS.

[0117] Regarding raw material i, it should be noted that raw material i refers to the i-th raw material among the m raw materials in the raw material unit to be tested. Assuming that the raw material unit to be tested includes three raw materials, raw material i refers to the i-th raw material among these three raw materials.

[0118] Furthermore, among the n raw material type sub-processes, the total amount of volatile organic compounds recovered after using all raw materials of the raw material unit to be tested in the kth raw material type sub-process can be achieved as follows:

[0119] In the kth raw material type sub-process, the usage amount of each raw material in the raw material unit to be tested during the production operation of the tested enterprise is obtained; the raw material unit to be tested includes m raw materials;

[0120] Obtain the recycling ratio of volatile organic compounds generated by each raw material in the recycling operation in the corresponding raw material;

[0121] Calculate the product of the usage and recycling percentage of each raw material to obtain the volatile organic compound recycling amount corresponding to each raw material;

[0122] The volatile organic compound recovery of all raw materials in the raw material unit to be tested in the kth raw material type sub-process is added together to obtain the total amount of volatile organic compound recovery after using all raw materials in the raw material unit to be tested in the kth raw material type sub-process.

[0123] More specifically, it can be calculated according to formula (8):

[0124] E k回收 =∑(W kj ×WF kj ) (8);

[0125] Among them, W kjWF is the recovery amount of raw material j in the raw material unit to be tested of the kth raw material type sub-process during the statistical period; kj is the recovery ratio of the volatile organic compound recovery amount of raw material j to the total mass of raw material i in the raw material unit to be tested, which is obtained from the test report corresponding to the recovered material.

[0126] Regarding raw material j, it should be noted that raw material j refers to the jth raw material in the raw material unit to be tested. Assuming that the raw material unit to be tested includes three raw materials, raw material j refers to the jth raw material among these three raw materials.

[0127] Furthermore, among the n raw material type sub-processes, the removal amount of volatile organic compounds by the waste gas treatment facilities corresponding to the kth raw material type sub-process can be calculated according to formula (9):

[0128] E k去除 =(C k入 ×Q k入 -C k出 ×Q k出 )×t formula (9);

[0129] Among them, C k入 is the VOCs emission concentration before the exhaust gas enters the exhaust gas treatment facility, Q k入 The flow rate of VOCs emissions before the exhaust gas treatment facilities are used, C k出 is the VOCs emission concentration after the exhaust gas passes through the exhaust gas treatment facilities, Q k出 is the flow rate of VOCs emitted after the waste gas passes through the waste gas treatment facilities, and t is the operating time of the waste gas treatment facilities during the statistical period.

[0130] In some embodiments, among n raw material type sub-processes, the removal amount of volatile organic compounds by the waste treatment facility corresponding to the kth raw material type sub-process can also be calculated according to formula (10):

[0131] E k去除 =(E k投用 -E k回收 )×ε×η formula (10);

[0132] Among them, e is the waste gas collection efficiency corresponding to the organized emission link, which is the ratio of the amount of volatile organic waste gas entering the waste gas collection facility to the total amount of volatile organic waste gas; η is the waste gas treatment efficiency corresponding to the waste gas treatment facility in the organized emission link, that is, the removal rate, which is the ratio of the amount of volatile organic matter stored or destroyed when passing through the waste gas treatment facility to the total amount of volatile organic matter entering the waste gas treatment facility.

[0133] Waste gas treatment facilities include waste gas collection facilities and waste gas treatment facilities. The waste gas collection facilities will send the collected volatile organic compound waste gas to the waste gas treatment facilities.

[0134] For example, the total amount of volatile organic compounds generated, the total amount of volatile organic compounds recovered, the waste gas collection efficiency and the removal rate used to calculate the total amount of volatile organic compound emissions in Table 5 can be seen in Table 6.

[0135] Table 6

[0136] Solvent-based gravure printing process Water-based raw material gravure printing process <![CDATA[Total generation amount (E k投用 )(tons)]]> 1.1 1.1 <![CDATA[Total amount of volatile organic compounds recovered (E k回收 )(tons)]]> 0.1 0.1 Exhaust gas collection efficiency (ε) 80％ 40％ Removal rate (η) 85％ 50％ <![CDATA[Total VOCs emissions (E k总 )]]> 0.32 0.8 <![CDATA[VOCs fugitive emission amount (E k无组织 )]]> 20％ 60％ <![CDATA[Organized emissions of VOCs (E k有组织 )]]> 12％ 20％ <![CDATA[VOCs fugitive emission weight (WT k无组织 )]]> 62.50％ 75.00％ <![CDATA[Weight of Organized Emission of VOCs (WT k有组织 )]]> 37.50％ 25.00％

[0137] In some embodiments, as Figure 7 As shown, step S107, obtaining the second comprehensive source component spectrum data corresponding to the process to be tested according to the first comprehensive source component spectrum data of all raw material type sub-processes, includes steps S201-S203:

[0138] S201. Obtain the emission contribution weight of volatile organic compounds of each raw material type sub-process.

[0139] In some embodiments, step S201 can be obtained by calculating the market consumption structure of the raw material type corresponding to each process and the corresponding VOCs comprehensive content level. More specifically, obtaining the VOC emission contribution weight of the kth raw material type sub-process among n raw material type sub-processes can be achieved using Equation 11.

[0140] WT k =(P k ×C k ) / ∑(P k ×C k ) Formula (11);

[0141] Among them, P k C is the market consumption proportion of raw materials of the kth raw material type sub-process, which refers to the ratio of the total market sales of all raw materials of the raw material unit to be tested in the kth raw material type sub-process to the total market sales of all raw materials of all raw material type sub-processes of the process to be tested; k The comprehensive volatile organic compound content level of the kth raw material type sub-process refers to the ratio of the mass of volatile organic compounds contained in all raw materials of the raw material unit to be tested in the kth raw material type sub-process to the total mass of all raw materials of the raw material unit to be tested.

[0142] It should be noted that the market consumption structure proportion of raw material products corresponding to different processes can be obtained from market surveys, literature inquiries and industry association surveys, and the comprehensive VOCs content level can be obtained from actual measurements or empirical values.

[0143] For example, based on the embodiments shown in Tables 1-6, the emission contribution weights obtained for the solvent-based raw material gravure printing process and the water-based raw material gravure printing process can be shown in Table 7.

[0144] Table 7

[0145]

[0146] S202 , calculating the product of the contribution weight of each raw material type sub-process and the comprehensive source component spectrum data of the first comprehensive source component spectrum data.

[0147] S203 , adding up the products of the comprehensive source component spectrum data of all raw material type sub-processes to obtain second comprehensive source component spectrum data corresponding to the process to be tested.

[0148] More specifically, the second comprehensive source component spectrum data of the process to be measured can be calculated according to the following formula 12:

[0149] SP 工艺 =∑(SP k ×WT k ) (Formula 12);

[0150] Among them, SP 工艺 is the second comprehensive source component spectrum data of the process to be tested; SP k is the first source comprehensive source component spectrum data corresponding to the kth raw material type sub-process; WT k The emission contribution weight of volatile organic compounds of the kth raw material type sub-process.

[0151] For example, based on the embodiments shown in Tables 1-7, the second comprehensive source component spectrum data obtained for the gravure printing process can be shown in Table 8.

[0152] Table 8

[0153]

[0154]

[0155]

[0156]

[0157] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for obtaining source component spectrum data of volatile organic compounds from pollution sources, characterized in that: include: Determine n raw material type sub-processes involved in the process to be tested, where n is greater than or equal to 1; Obtain the raw material unit to be tested corresponding to each raw material type sub-process, where the raw material unit to be tested includes m raw materials, where m is greater than or equal to 1; Determine the corresponding volatile organic compound component set to be tested according to the raw material unit to be tested of each raw material type sub-process; According to the set of volatile organic compound components to be measured in each raw material type sub-process, the volatile organic compound organized emission component spectrum data corresponding to the organized emission link is obtained; Obtain the volatile organic compound unorganized emission component spectrum data corresponding to the unorganized emission link based on the set of volatile organic compound components to be measured in each raw material type sub-process; Obtaining corresponding first comprehensive source component spectrum data according to the volatile organic compound organized emission component spectrum data and the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process; Obtain the second comprehensive source component spectrum data for the process to be tested based on the first comprehensive source component spectrum data of all raw material type sub-processes, The step of obtaining corresponding first comprehensive source component spectrum data according to the volatile organic compound organized emission component spectrum data and the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process comprises: Obtain the weight of volatile organic compound organized emissions corresponding to each raw material type sub-process in the organized emission link; Obtain the weight of volatile organic compound unorganized emissions corresponding to each raw material type sub-process in the unorganized emission link; Calculate the product of the volatile organic compound organized emission component spectrum data and the first source component spectrum data of the volatile organic compound organized emission weight for each raw material type sub-process; Calculate the product of the volatile organic compound unorganized emission component spectrum data of each raw material type sub-process and the second source component spectrum data of the volatile organic compound unorganized emission weight; The product of the first source component spectrum data and the product of the second source component spectrum data of each raw material type sub-process are added together to obtain the corresponding first comprehensive source component spectrum data. Obtaining second comprehensive source component spectrum data corresponding to the process to be tested based on the first comprehensive source component spectrum data of all raw material type sub-processes, including: Obtain the emission contribution weight of volatile organic compounds for each raw material type sub-process; Calculating the product of the contribution weight of each raw material type sub-process and the comprehensive source component spectrum data of the first comprehensive source component spectrum data; The comprehensive source component spectrum data of all raw material type sub-processes are multiplied and added to obtain the second comprehensive source component spectrum data corresponding to the process to be tested. The emission contribution weight of volatile organic compounds for each raw material type sub-process can be calculated according to the following formula: ； Among them, P k It refers to the ratio of the total raw material market sales of the kth raw material type sub-process to the total raw material market sales of all raw material type sub-processes of the process to be tested; C k It refers to the ratio of the mass of volatile organic compounds contained in the raw materials of the kth raw material type sub-process to the total mass of the raw materials.

2. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 1, characterized in that: The step of obtaining the weight of the volatile organic compound organized emission corresponding to each raw material type sub-process in the organized emission link includes: Obtain the organized emissions of volatile organic compounds corresponding to each raw material type sub-process in the organized emission link; Obtain the total amount of volatile organic compound emissions corresponding to each raw material type sub-process; According to the ratio of the organized volatile organic compound emissions of each raw material type sub-process to the total volatile organic compound emissions, the corresponding organized volatile organic compound emissions weight is obtained.

3. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 1, characterized in that: The step of obtaining the weight of the volatile organic compound fugitive emission corresponding to each raw material type sub-process in the fugitive emission link includes: Obtain the volatile organic compound unorganized emissions corresponding to each raw material type sub-process in the unorganized emission link; Obtain the total amount of volatile organic compound unorganized emissions corresponding to each raw material type sub-process; According to the ratio of the volatile organic compound unorganized emissions of each raw material type sub-process to the total volatile organic compound emissions, the corresponding volatile organic compound unorganized emission weight is obtained.

4. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 2, characterized in that: The step of obtaining the organized emission of volatile organic compounds corresponding to each raw material type sub-process in the organized emission link includes: Obtain the emission concentration of volatile organic compounds at the exhaust pipe outlet in the organized emission link in each raw material type sub-process; Obtain the emission flow rate of volatile organic compounds at the exhaust pipe outlet in the organized emission link in each raw material type sub-process; Obtain the production time of the raw material unit to be tested in each raw material type sub-process during the statistical period; The corresponding organized emissions of volatile organic compounds are obtained by multiplying the emission concentration, emission flow rate and production time of each raw material type sub-process.

5. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 2, characterized in that: The method of obtaining the total amount of volatile organic compound emissions corresponding to each raw material type sub-process includes: Obtain the total amount of volatile organic compounds generated after using all raw materials of the raw material unit to be tested in each raw material type sub-process during the statistical period; Obtain the total amount of volatile organic compounds recovered after using all raw materials of the raw material unit to be tested in each raw material type sub-process during the statistical period; Obtain the amount of volatile organic compounds removed by the waste gas treatment facilities corresponding to each raw material type sub-process during the statistical period; The total volatile organic compound emissions corresponding to each raw material type sub-process are obtained based on the difference between the total amount of volatile organic compounds produced and the total amount of recycled and removed amounts.

6. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 2, characterized in that: The unorganized volatile organic compound emissions of each raw material type sub-process are equal to the difference between the corresponding total volatile organic compound emissions and the organized volatile organic compound emissions.

7. The method for obtaining source component spectrum data of volatile organic compounds from pollution sources according to claim 5, characterized in that: Among n raw material type sub-processes, the total amount of volatile organic compounds generated by the kth raw material type sub-process includes: Obtain the usage of each raw material in the raw material unit to be tested during the production process of the tested enterprise; Obtain the proportion of volatile organic compounds generated during the use of each raw material in the corresponding raw material; Calculate the product of the usage and usage ratio of each raw material to obtain the volatile organic compound generation corresponding to each raw material; Adding the volatile organic compound generation amounts of all raw materials of the raw material unit to be tested in the kth raw material type sub-process to obtain the total volatile organic compound generation amount in the kth raw material type sub-process; Here, k is greater than or equal to 1 and less than or equal to n.

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