A method, apparatus and memory for calculating the carbon footprint of a lubricating oil base stock product

Abstract

The present application provides a kind of carbon footprint calculation method, device and memory of lubricating oil base oil product.The present application method has handled the data collected for the carbon footprint calculation of lubricating oil base oil product, the different disposal mode of the co-product of hydrogen production device is distinguished, the accurate accounting of greenhouse gas emissions caused by hydrogen introduction is realized, the omission and result deviation of lubricating oil base oil product carbon footprint accounting are avoided, and it is conducive to enterprise to master the carbon emission situation of lubricating oil base oil production stage in all directions, increase the competitiveness of enterprise in special oil market.

Description

Technical Field

[0001] This invention relates to the field of energy conservation and emission reduction metering technology, specifically to a method, device, and memory for calculating the carbon footprint of lubricating oil base oil products. Background Technology

[0002] The "dual carbon" target is both a responsibility of major powers and an inevitable trend in social development. Against this backdrop, for process industries like oil and petrochemicals, clearly quantifying the environmental impact of product production allows companies to seize the initiative in low-carbon development and increase their competitiveness. Conducting product carbon footprint assessments enables companies to fully understand the environmental impact of their products and take feasible measures to reduce greenhouse gas emissions in the supply chain. A carbon footprint refers to the collection of greenhouse gas emissions caused by a business, activity, product, or individual. Typically, all greenhouse gas emissions are represented by CO2e.

[0003] On the other hand, traditional oil refining enterprises urgently need to achieve low-carbon development through energy transformation and industrial restructuring. This requires oil refining to move towards high-quality development, differentiate its development of high-end and specialty products, and increase the production of high-value-added and specialty products. "Oil conversion" and "oil-to-specialty" have become necessary trends for future development. As an important product in the oil-to-specialty transition, lubricating oil base oil is bound to have a broader development prospect in the future. Conducting carbon footprint research on lubricating oil base oil products will help product sales and improve the economic benefits and brand awareness of enterprises.

[0004] One of the important production methods for lubricating oil base oils is through hydrogenation. However, existing methods for calculating the carbon footprint of petrochemical products generally do not consider the greenhouse gas emissions caused by hydrogen consumption in hydrogenation units. Currently, the sources of hydrogen produced in petrochemicals are diverse, including coal-based hydrogen production and natural gas-based hydrogen production, which generate significant greenhouse gas emissions. Furthermore, the treatment methods for co-products generated during hydrogen production vary, resulting in different hydrogen production coefficients. If this part is not measured and differentiated, it will cause deviations in the carbon footprint calculation results of products, seriously affecting the implementation of corporate emission reduction measures. Summary of the Invention

[0005] To address the shortcomings of existing technologies, one of the objectives of this invention is to provide a more accurate method for calculating the carbon footprint of lubricating oil base products. On the one hand, it can effectively calculate greenhouse gas emissions caused by hydrogen consumption; on the other hand, it can differentiate the different product processing methods of hydrogen production units through algorithms, thereby achieving accurate identification of hydrogen production emission coefficients.

[0006] The first aspect of this invention is to provide a method for calculating the carbon footprint of lubricating oil base oil products, comprising the following steps: S1: Obtain basic information and data on the production process of lubricating oil base oil products, extract energy consumption data and processing data of the equipment involved in the production; draw a production flow chart of lubricating oil base oil products. S2 calculates the energy consumption and emission coefficients of the equipment involved in production; S3 acquires basic information about the hydrogen production unit, extracts energy consumption data, co-product output, disposal methods, and other information, and calculates the carbon emissions per ton of hydrogen produced by the hydrogen production unit. S4 Calculates the hydrogen consumption coefficient of the hydrogenation unit; S5 calculates the carbon footprint of lubricating oil base oil products during the production stage.

[0007] Furthermore, the method for obtaining basic information and data on the production process of lubricating oil base oil products in S1, and extracting energy consumption data and processing data of the equipment involved in the production, includes: S11 Obtain the basic process flow for the production of lubricating oil base oil products; S12 obtains a diagram of the entire plant's hydrogen pipeline network and extracts information on the hydrogen source of the hydrogen refueling unit; S13 Extract energy consumption data and processing data of the equipment involved in production.

[0008] Furthermore, the basic process flow in S11 includes two types: the old three-stage process and the hydrogenation process. The old three-stage process typically includes an atmospheric and vacuum distillation unit, a ketone-benzene dewaxing unit, a furfural refining unit, and a clay refining unit; the hydrogenation process typically includes an atmospheric and vacuum distillation unit, a hydrocracking unit, and a lubricating oil hydroisomerization unit; the two routes can also be carried out in an overlapping manner.

[0009] Furthermore, the hydrogen source in S12 is usually one or more of the following: coal-based hydrogen production, natural gas-based hydrogen production, reforming-based hydrogen production, cracking-based hydrogen production, and PSA-based hydrogen production.

[0010] Furthermore, the equipment involved in the production in S13 includes one or more of the following: atmospheric and vacuum distillation unit, ketone-benzene dewaxing unit, furfural refining unit, clay refining unit, hydrocracking unit, and lubricating oil hydroisomerization unit.

[0011] Furthermore, the energy consumption data of the unit in S13 includes the consumption of primary energy sources such as coal, oil, natural gas, and refinery gas in the unit's heating furnace during the statistical period, as well as one or more of the following: electricity, medium-pressure steam, low-pressure steam, fresh water, circulating water, demineralized water, deoxygenated water, nitrogen, and compressed air.

[0012] Furthermore, the processing data of the device in S13 refers to the total amount of raw materials processed by the production device during the statistical period.

[0013] Furthermore, S2 calculates the energy consumption and emission coefficients of the production unit; The calculation formula is:

[0014] In the formula, q i E represents the emission source consumption of the unit; i P is the carbon emission factor of the emission source. i This refers to the processing quantity of a unit device.

[0015] Furthermore, the carbon emission factors for the emission sources are set to default values, specifically: fresh water 0.0002 tCO2e / t, circulating water 0.0003 tCO2e / t, demineralized water 0.0009 tCO2e / t, deoxygenated water 0.0136 tCO2e / t, electricity 0.859 tCO2e / MWh, medium-pressure steam 0.4072 tCO2e / t, low-pressure steam 0.3516 tCO2e / t, fuel gas 3.0144 tCO2e / t, natural gas 2.1643 tCO2e / t, and nitrogen 0.0006 tCO2e / Nm³. 3 Industrial wind 0.0001 tCO2e / Nm 3 .

[0016] Furthermore, S3, which involves acquiring basic information about the hydrogen production unit and extracting data such as energy consumption, co-produced product output, and disposal methods, includes: Energy consumption data and hydrogen production data of S31 hydrogen extraction and production unit; S32 Obtain information on the disposal of byproducts from the hydrogen production unit, including the types, quantities, and treatment methods of the byproducts. Furthermore, the co-products of a coal-to-hydrogen unit include one or more of the following: acid gas, syngas, carbon dioxide, ammonia-containing wastewater, process wastewater, coarse coal slag, and fine coal slag; the co-products of a natural gas-to-hydrogen unit include one or more of the following: tail gas, dry gas, and pressure swing adsorption gas stripping gas; the co-products of a reforming-to-hydrogen unit include one or more of the following: flare gas, refinery dry gas, reforming product oil, liquefied petroleum gas, and reformed C5; the co-products of a cracking-to-hydrogen unit include one or more of the following: methane hydrogen, mixed C9, ethylene, propylene, flare gas, and C4 fraction; and the co-products of a PSA-to-hydrogen unit include one or more of the following: refinery dry gas and PSA tail gas.

[0017] Furthermore, the methods for treating the co-produced products include one or more of the following: use as feedstock for other units, reuse in the heating furnace of this unit, CO2 capture and recovery or sale outside the enterprise boundary, direct emission, reuse in the heating furnace of other units in the refinery, disposal as waste, and secondary purification.

[0018] Furthermore, the method for calculating the carbon emissions per ton of hydrogen produced by the hydrogen production unit as described in S3 includes: S33 calculates greenhouse gas emissions from fuel consumption in the hydrogen production process, including two methods: The formula for Method 1 is:

[0019] In the formula, E j q represents the carbon content of the fuel. j The amount of fuel consumed in the hydrogen production process.

[0020] The formula for Method 2 is:

[0021] In the formula, E i The carbon emission factor of fuel; q j The amount of fuel consumed in the hydrogen production process.

[0022] S34 identifies whether co-produced products participate in the distribution of greenhouse gases emitted during hydrogen production; Furthermore, the allocation method described in this method is weight allocation; Furthermore, if the byproducts of the hydrogen production unit are disposed of as waste, directly emitted, or reused in the unit's heating furnace, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts of the hydrogen production unit are used as raw materials for other units, undergo secondary purification, or are reused in the heating furnaces of other units, then the byproducts participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts are CO2 captured and recovered or sold outside the enterprise boundary, or coal slag, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production, and this part of the emissions must be excluded when calculating greenhouse gas emissions in S33.

[0023] S35 Calculates the carbon emissions per ton of hydrogen produced by the hydrogen production unit. The calculation formula is:

[0024] In the formula, q i E represents the emission source consumption of the hydrogen production unit; i P represents the carbon emission factor of the emission source; E represents the greenhouse gas emissions from fuel consumption in the hydrogen production process; P represents the carbon emission factor of the emission source. i The total weight of co-produced products that participate in the allocation of greenhouse gas emissions from hydrogen production.

[0025] Furthermore, the method for calculating the hydrogen consumption coefficient of the hydrogenation unit as described in S4 includes: S41 Data on hydrogen consumption and raw material quantity of the extraction and hydrogenation unit; S42 Calculate the hydrogen consumption per ton of hydrogenation processing capacity of the hydrogenation unit; The calculation formula is:

[0026] In the formula, P H2 P represents the hydrogen consumption of the hydrogenation unit during the statistical period; P represents the amount of raw materials processed by the unit during the statistical period.

[0027] S43 Calculate the hydrogen consumption coefficient of the hydrogenation unit; The calculation formula is:

[0028] In the formula, E H2 Carbon emissions per ton of hydrogen produced by a hydrogen production unit; I H2 Hydrogen consumption per ton of processing capacity of the hydrogenation unit.

[0029] Furthermore, the method for calculating the carbon footprint of lubricating oil base oil products during the production stage, as described in S5, includes: S51 Calculate the carbon emission coefficient of lubricating oil base oil produced by the old three-process manufacturing method; The calculation formula is:

[0030] In the formula, e1 is the energy consumption emission coefficient of the device; i is the specific gravity coefficient of the device.

[0031] Furthermore, if the enterprise's production process involves this device, then i is 1; if the enterprise's production process does not involve this device, then i is 0.

[0032] S52 Calculate the carbon emission coefficient of lubricating oil base oil produced by the hydrotreating process; The calculation formula is:

[0033] In the formula, e1 is the energy consumption and emission coefficient of the device; e2 is the hydrogen consumption coefficient of the hydrogenation device; and i is the specific gravity coefficient of the device.

[0034] Furthermore, if the enterprise's production process involves this device, then i is 1; if the enterprise's production process does not involve this device, then i is 0.

[0035] S53 Calculate the carbon footprint of lubricating oil base oil products during the production stage; The calculation formula is:

[0036] In the formula, e O The carbon emission coefficient for producing lubricating oil base oil using the old three-process method; i O The ratio coefficient for producing lubricating oil base oil using the old three-stage process; for e H2 Carbon emission coefficient for the production of lubricating oil base oils via the hydrotreating process; i H2 The proportion coefficient for producing lubricating oil base oil in the hydrogenation process.

[0037] Furthermore, i O with i H2The lubricating oil base oil produced by the two processes is allocated by weight.

[0038] Another aspect of the present invention is to provide a device for calculating the carbon footprint of a lubricating oil base oil product that implements the aforementioned method.

[0039] Furthermore, the computing device includes: The data extraction and process drawing unit is used to extract basic information and data of the production process of lubricating oil base oil products, extract energy consumption data and processing data of the equipment involved in the production; and draw the production process flow chart of lubricating oil base oil products based on the material balance of the equipment by dragging and dropping. The unit calculates the energy consumption coefficient of the equipment based on the equipment's energy consumption data and processing volume. The carbon emission calculation unit for one ton of hydrogen from a hydrogen production unit calculates the carbon emission per ton of hydrogen based on the basic information of the hydrogen production unit and information such as the output and disposal methods of co-produced products. The hydrogen consumption coefficient calculation unit for the hydrogenation unit calculates its hydrogen consumption coefficient based on the hydrogen consumption and processing volume of the hydrogenation unit. The carbon footprint calculation unit for lubricating oil base oil products calculates the carbon footprint of each stage of lubricating oil production based on the output of different lubricating oil base oil production processes.

[0040] For details on the data extraction and calculation process of this computing device, please refer to the specific calculation method described above.

[0041] The present invention also provides a memory including a software program adapted for a processor to execute the steps of the computation method as described above.

[0042] The method provided by this invention distinguishes the different disposal methods of co-products from hydrogen production units, enabling accurate calculation of greenhouse gas emissions caused by hydrogen introduction. This avoids omissions and deviations in the carbon footprint calculation of lubricating oil base oil products, and helps enterprises to comprehensively understand the carbon emissions during the production stage of lubricating oil base oil, thereby increasing their competitiveness in the specialty oil market. Attached Figure Description

[0043] Figure 1 This is a flowchart illustrating the method for calculating the carbon footprint of lubricating oil base oil products used in this embodiment of the invention. Figure 2 This is a schematic diagram of the production process of lubricating oil base oil products shown in the embodiments of the present invention; Figure 3 This is a schematic diagram of the device for calculating the carbon footprint of the lubricating oil base oil product of the present invention. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0045] This invention provides a method for calculating the carbon footprint of lubricating oil base oil products, such as... Figure 1 As shown, the method includes the following steps: S1: Obtain basic information and data on the production process of lubricating oil base oil products, extract energy consumption data and processing data of the equipment involved in the production; draw a production flow chart of lubricating oil base oil products. S2 calculates the energy consumption and emission coefficients of the equipment involved in production; S3 acquires basic information about the hydrogen production unit, extracts energy consumption data, co-product output, and disposal methods, and calculates the carbon emissions per ton of hydrogen produced by the hydrogen production unit. S4 calculates the hydrogen consumption coefficient of the hydrogenation unit; S5 calculates the carbon footprint of lubricating oil base oil products during the production stage.

[0046] The method for obtaining basic information and data on the production process of lubricating oil base oil products in S1, and extracting energy consumption data and processing data of the equipment involved in the production, includes: S11 Obtain the basic process flow of lubricating oil base oil production. In this example, by sorting out the enterprise's production flow chart and equipment operation data, it is determined that the enterprise's lubricating oil base oil production process consists of the old three-step process and the hydrogenation process in parallel. S12 Obtain the hydrogen pipeline network diagram of the entire plant and extract the hydrogen source information of the hydrogenation unit; Based on the above method and combined with the hydrogen pipeline network diagram of the production enterprise in the embodiment, determine that the hydrogen production unit of the enterprise is coal-to-hydrogen, reforming-to-hydrogen, and natural gas / dry gas-to-hydrogen, among which the hydrogenation unit involved in the production of lubricating oil base oil is a hydrocracking unit and a lubricating oil hydroisomerization unit, and their hydrogen sources are gas-to-hydrogen and coal-to-hydrogen, respectively. S13 Extract energy consumption data and processing data of equipment involved in production; Furthermore, the equipment involved in the lubricating oil base oil production process in this embodiment includes an atmospheric and vacuum distillation unit, a ketone-benzene dewaxing unit, a furfural refining unit, a clay refining unit, a hydrocracking unit, and a lubricating oil hydroisomerization unit.

[0047] Furthermore, the statistical period for the embodiment is set to the entire year of 2020, and the energy consumption and total raw material processing of the above-mentioned device are shown in Table 1.

[0048] Table 1. Statistical Table of Device Data

[0049] Furthermore, as described in the aforementioned method, the carbon emission factors for the emission sources are default values, specifically: fresh water 0.0002 tCO2e / t, circulating water 0.0003 tCO2e / t, demineralized water 0.0009 tCO2e / t, deoxygenated water 0.0136 tCO2e / t, electricity 0.859 tCO2e / MWh, medium-pressure steam 0.4072 tCO2e / t, low-pressure steam 0.3516 tCO2e / t, fuel gas 3.0144 tCO2e / t, natural gas 2.1643 tCO2e / t, and nitrogen 0.0006 tCO2e / Nm³. 3 Industrial wind 0.0001 tCO2e / Nm 3 .

[0050] Furthermore, a production flow chart for lubricating oil base oil products is drawn; the production flow chart for lubricating oil base oil in this embodiment is attached. Figure 2 As shown.

[0051] Furthermore, S2 calculates the energy consumption and emission coefficients of the equipment involved in the production process; The calculation formula is:

[0052] In the formula, q i E represents the emission source consumption of the unit; i P is the carbon emission factor of the emission source. i This refers to the processing quantity of a unit device.

[0053] Calculate the energy consumption and emission coefficients of an atmospheric and vacuum distillation unit: e1= (8303×0.0002+14598047×0.0003+130929×0.0009+108140×0.0136+26336.78×0.859+16148×0.4072+2087×0.3516+40936×3.0144+3182182×0.0001) / 5139989 =0.03108 tCO2e / t Calculate the energy consumption and emission coefficients of the ketone-benzene dewaxing unit: e1= (754×0.0002+1825504×0.0003+103295×0.0009+24986.76×0.859+190846×0.3516+43127×0.0006+2953990×0.0001) / 293380 =0.3055tCO2e / t Calculate the energy consumption and emission coefficients of the furfural refining unit: e1= (1876×0.0002+1970178×0.0003+28299×0.0136+933.45×0.859+268×0.3516+1517×3.0144+869685×0.0001) / 111239 =0.05875tCO2e / t Calculate the energy consumption and emission coefficients of the clay refining unit: e1= (31473×0.0002+201931×0.0003+415.718×0.859+140×0.3516+154×3.0144+724229×0.0001) / 80633 =0.01254tCO2e / t Calculate the energy consumption and emission coefficients of a hydrocracking unit: e1= (76×0.0002+3864487×0.0003+46302×0.0009+86251×0.0136+28624.41×0.859+114764×0.4072-149029×0.3516+7267×3.0144) / 651654 =0.06647 tCO2e / t Calculate the energy consumption and emission coefficients of a lubricating oil hydroisomerization unit: e1= (708×0.0002+3411593×0.0003+39208×0.0009+28646×0.0136+14043.43×0.859+9202×0.3516+4197×3.0144+2416437×0.0001) / 181466 =0.1637 tCO2e / t Furthermore, S3, which involves acquiring basic information about the hydrogen production unit and extracting data such as energy consumption, co-produced product output, and disposal methods, includes: S31 extracts energy consumption data and hydrogen production data of the hydrogen production unit; the hydrogen production unit involved in the lubricating oil base oil production process in this embodiment is natural gas / dry gas hydrogen production and coal hydrogen production, and its energy consumption data table and material balance table are shown in Tables 2-4.

[0054] Table 2 Energy Consumption Data of Hydrogen Production Unit

[0055] Table 3 Material Balance Sheet for Natural Gas / Dry Gas Hydrogen Production Unit

[0056] Table 4 Material Balance Sheet for Coal-to-Hydrogen Unit

[0057] S32 Obtain information on the disposal of byproducts from the hydrogen production unit, including the types, quantities, and treatment methods of the byproducts. Furthermore, in this embodiment, the co-produced products of the coal-to-hydrogen unit include acid gas, syngas, carbon dioxide, ammonia-containing wastewater, process wastewater, coarse coal slag, and fine coal slag; the co-produced product of the natural gas / dry gas-to-hydrogen unit is only tail gas.

[0058] Furthermore, the syngas produced by the coal-to-hydrogen unit is used as feedstock for other units, the ammonia-containing wastewater undergoes secondary purification, the CO2 is captured and sold outside the enterprise boundary, and the acid gas and process wastewater are disposed of as waste; the tail gas from the co-produced products of the natural gas / dry gas-to-hydrogen unit is reused as a heater in this unit.

[0059] Furthermore, the method for calculating the carbon emissions per ton of hydrogen produced by a hydrogen production unit includes: S33 calculates greenhouse gas emissions from fuel consumption in the hydrogen production process, including two methods: The formula for Method 1 is:

[0060] In the formula, E j q represents the carbon content of the fuel. j The amount of fuel consumed in the hydrogen production process.

[0061] The formula for Method 2 is:

[0062] In the formula, E i The carbon emission factor of fuel; q j The amount of fuel consumed in the hydrogen production process.

[0063] Furthermore, in this embodiment, the calculation of the coal-to-hydrogen device is performed using method one, and the carbon content of the raw coal and coarse and fine coal slag is shown in Table 5.

[0064] Table 5 Carbon content of feedstock and co-biota for coal-to-hydrogen units

[0065] The calculated emissions are: E=171083×69.11%×44 / 12=433530 tCO2e Furthermore, in this embodiment, the calculation is performed using method two for selecting the natural gas / dry gas hydrogen production device; E=120056×2.1643+7543×3.0144=282575 tCO2e S34 identifies whether co-produced products participate in the distribution of greenhouse gases emitted during hydrogen production; Furthermore, the allocation method described in this method is weight allocation; Furthermore, if the byproducts of the hydrogen production unit are disposed of as waste, directly emitted, or reused in the unit's heating furnace, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts of the hydrogen production unit are used as raw materials for other units, undergo secondary purification, or are reused in the heating furnaces of other units, then the byproducts participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts are CO2 captured and recovered or sold outside the enterprise boundary, or coal slag, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production, and this part of the emissions must be excluded when calculating greenhouse gas emissions in S33.

[0066] Furthermore, in this embodiment, the syngas and acid gas produced by the coal-to-hydrogen unit are used as raw materials for other units and participate in the allocation; the ammonia-containing wastewater undergoes secondary purification and participates in the allocation; the CO2 captured and sold outside the enterprise boundary does not participate in the allocation, and this part of the emissions must be excluded when calculating greenhouse gas emissions in S33; the coarse and fine coal slags do not participate in the allocation, and this part of the emissions must be excluded when calculating greenhouse gas emissions in S33; the process wastewater is disposed of as waste and does not participate in the allocation; the tail gas of the co-products of the gas-to-hydrogen unit is reused as a heater in this unit and does not participate in the allocation.

[0067] Furthermore, the greenhouse gas emissions from coal-to-hydrogen plants must exclude the CO2 captured and recovered, as well as the carbon content of coarse and fine coal slag. Further calculations show that the greenhouse gas emissions from a coal-to-hydrogen plant are: 433530-(12166×24.46%-6560×24.37%)×44 / 12-28053=388734 tCO2e S35 Calculate the carbon emissions per ton of hydrogen produced during the hydrogen production process; The calculation formula is:

[0068] In the formula, q i E represents the emission source consumption of the hydrogen production unit; i P represents the carbon emission factor of the emission source; E represents the greenhouse gas emissions from fuel consumption in the hydrogen production process; P represents the carbon emission factor of the emission source. i The total weight of co-produced products that participate in the allocation of greenhouse gas emissions from hydrogen production.

[0069] Based on the data in Table 2 and the previous calculation results, the carbon emissions per ton of hydrogen produced by the coal-to-hydrogen unit are calculated as follows: E H2=(18500×0.0002+38877360×0.0003+423009×0.0009+18592.61×0.859+40452×0.4072-158 68×0.3516+26579757×0.0006+1646600×0.0001+388734) / (18585+15313+7190+823)=10.61 tCO2e / tH2 Carbon emissions per ton of hydrogen produced by a natural gas / dry gas hydrogen production unit E H2 =7661153×0.0003+1109013×0.0009+32065.01×0.859-284999×0.4072+33604×0 .3516+30684×3.0144+1438329×0.0006+2660720×0.0001+282575) / 51012=5.91 tCO2e / tH2 Furthermore, the method for calculating the hydrogen consumption coefficient of the hydrogenation unit as described in S4 includes: S41 Extraction of hydrogen consumption and raw material quantity data for the hydrogenation unit; data for the hydrocracking unit and the lubricating oil hydroisomerization unit in this embodiment are shown in Table 6.

[0070] Table 6 Hydrogen consumption data for hydrogenation unit

[0071] S42 Calculates the hydrogen consumption per ton of hydrogenation processing capacity of the hydrogenation unit; The calculation formula is:

[0072] In the formula, P H2 P represents the hydrogen consumption of the hydrogenation unit during the statistical period; P represents the amount of raw materials processed by the unit during the statistical period.

[0073] The hydrogen consumption per ton of processing capacity of the hydrocracking unit is: I H2 =17195 / 651654=0.02639t H2 / t The hydrogen consumption per ton of processing capacity of the lubricating oil hydroisomerization unit is: I H2 =1375 / 181466=7.577×10 -3 t H2 / t S43 Calculate the hydrogen consumption coefficient of the hydrogenation unit; The calculation formula is:

[0074] In the formula, E H2 Carbon emissions per ton of hydrogen produced by a hydrogen production unit; I H2 Hydrogen consumption per ton of processing capacity of the hydrogenation unit.

[0075] The hydrogen consumption coefficient of the hydrocracking unit is: e2=5.91×0.02639=0.1560tCO2e / t The hydrogen consumption coefficient of the lubricating oil hydroisomerization unit is: e² = 10.61 × 7.577 × 10 -3 =0.0804tCO2e / t Furthermore, the method for calculating the carbon footprint of lubricating oil base oil products during the production stage, as described in S5, includes: S51 Calculate the carbon emission coefficient of lubricating oil base oil produced by the old three-process manufacturing method; The calculation formula is:

[0076] In the formula, e1 is the energy consumption emission coefficient of the device; i is the specific gravity coefficient of the device.

[0077] Furthermore, if the enterprise's production process involves this device, then i is 1; if the enterprise's production process does not involve this device, then i is 0.

[0078] In this embodiment, atmospheric and vacuum distillation apparatus, ketone-benzene dewaxing apparatus, furfural refining apparatus, and clay refining apparatus are all involved, and i is taken as 1 in all cases.

[0079] e O =0.03108×1+0.3055×1+0.05875×1+0.01254×1=0.4079 tCO2e / t S52 Calculate the carbon emission coefficient of lubricating oil base oil produced by the hydrotreating process; The calculation formula is:

[0080] In the formula, e1 is the energy consumption and emission coefficient of the device; e2 is the hydrogen consumption coefficient of the hydrogenation device; and i is the specific gravity coefficient of the device.

[0081] Furthermore, if the enterprise's production process involves this device, then i is 1; if the enterprise's production process does not involve this device, then i is 0.

[0082] In this embodiment, atmospheric and vacuum distillation unit, hydrocracking unit, and lubricating oil hydroisomerization unit are all involved, and i is 1 in all cases.

[0083] e H2=0.03108×1+(0.06647+0.1560)×1+(0.1637+0.0804)×1=0.4977 tCO2e / t S53 Calculate the carbon footprint of lubricating oil base oil products during the production stage; The calculation formula is:

[0084] In the formula, e O The carbon emission coefficient for producing lubricating oil base oil using the old three-process method; i O The ratio coefficient for producing lubricating oil base oil using the old three-stage process; for e H2 Carbon emission coefficient for the production of lubricating oil base oils via the hydrotreating process; i H2 The proportion coefficient for producing lubricating oil base oil in the hydrogenation process.

[0085] Furthermore, i O with i H2 The lubricating oil base oil produced by the two processes is allocated by weight.

[0086] In this embodiment, 79,561 tons of lubricating oil base oil were produced by the old three-process production line, and 97,241 tons of lubricating oil base oil were produced by the hydrogenation process, totaling 176,802 tons.

[0087] Furthermore, determine i O =79561 / 176802=0.45, i H2 =97241 / 176802=0.55.

[0088] Furthermore, the carbon footprint of the lubricating oil base oil product manufacturing stage in this embodiment is calculated as follows: e=0.4079×0.45+0.4977×0.55=0.4573 tCO2e / t Example 2

[0089] Embodiments of the present invention, such as Figure 3 As shown, a device for calculating the carbon footprint of lubricating oil base oil products is also provided, the device comprising: The data extraction and process drawing unit is used to extract basic information and data of the production process of lubricating oil base oil products, extract energy consumption data and processing data of the equipment involved in the production; and draw the production process flow chart of lubricating oil base oil products based on the material balance of the equipment by dragging and dropping. The unit calculates the energy consumption coefficient of the equipment based on the equipment's energy consumption data and processing volume. The carbon emission calculation unit for one ton of hydrogen from a hydrogen production unit calculates the carbon emission per ton of hydrogen based on the basic information of the hydrogen production unit and information such as the output and disposal methods of co-produced products. The hydrogen consumption coefficient calculation unit for the hydrogenation unit calculates its hydrogen consumption coefficient based on the hydrogen consumption and processing volume of the hydrogenation unit. The carbon footprint calculation unit for lubricating oil base oil products calculates the carbon footprint of each stage of lubricating oil production based on the output of different lubricating oil base oil production processes.

[0090] The data extraction and calculation process of this computing device can be found in the detailed calculation method described above. Since the carbon emission calculation process and its beneficial effects have already been described and explained in the preceding embodiments, they can be referred to accordingly, and will not be repeated here. Example 3

[0091] This embodiment provides a memory, which may be a non-transitory (non-volatile) computer storage medium. The computer storage medium stores computer-executable instructions, which can execute each step of the carbon footprint calculation method for lubricating oil base oil products in any of the above method embodiments and achieve the same technical effect.

[0092] The embodiments of the present invention can be implemented by means of software programs, that is, by writing software programs to implement... Figure 1 The software program (and instruction set) for each step in the corresponding carbon emission calculation method is stored in a storage device located in a computer device, so that the processor of the computer device can call the software program to achieve the purpose of the embodiments of the present invention.

Claims

1. A method for calculating the carbon footprint of a lubricating oil base product, characterized in that, Includes the following steps: S1. Obtain basic information and data on the production process of lubricating oil base oil products, and extract energy consumption and processing data of the equipment involved in the production; draw a production flow chart for lubricating oil base oil products; wherein, obtaining basic information and data on the production process of lubricating oil base oil products, and extracting energy consumption and processing data of the equipment involved in the production, includes: S11 Obtain the basic process flow for the production of lubricating oil base oil products; S12 obtains a diagram of the entire plant's hydrogen pipeline network and extracts information on the hydrogen source for the hydrogenation unit; the hydrogen source is one or more of the following: coal-to-hydrogen, natural gas-to-hydrogen, reforming-to-hydrogen, cracking-to-hydrogen, and PSA-to-hydrogen. S13 Extract energy consumption data and processing data of equipment involved in production; S2 calculates the energy consumption and emission coefficients of the equipment involved in production; S3 acquires basic information about the hydrogen production unit, extracts energy consumption data and byproduct output and disposal information, and calculates the carbon emissions per ton of hydrogen produced by the hydrogen production unit; the method for calculating the carbon emissions per ton of hydrogen produced by the hydrogen production unit includes: S33 calculates greenhouse gas emissions from fuel consumption in the hydrogen production process, including two methods: The formula for Method 1 is: ； In the formula, E j q represents the carbon content of the fuel. j The amount of fuel consumed in the hydrogen production process; The formula for Method 2 is: ； In the formula, E i The carbon emission factor of fuel; q j The amount of fuel consumed in the hydrogen production process; S34 identifies whether co-produced products participate in the allocation of greenhouse gases emitted during hydrogen production; the allocation method is weight allocation. If the byproducts of the hydrogen production unit are disposed of as waste, directly emitted, or reused in the unit's heating furnace, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts of the hydrogen production unit are used as raw materials for other units, undergo secondary purification, or reused in the heating furnaces of other units, then the byproducts participate in the allocation of greenhouse gas emissions from hydrogen production. If the byproducts are CO2 captured and recovered or sold outside the enterprise boundary, or coal slag, then the byproducts do not participate in the allocation of greenhouse gas emissions from hydrogen production, and this part of the emissions is excluded when calculating greenhouse gas emissions in S33. S35 Calculates the carbon emissions per ton of hydrogen produced by the hydrogen production unit. The calculation formula is: ； In the formula, q i E represents the emission source consumption of the hydrogen production unit; k P represents the carbon emission factor of the emission source; E represents the greenhouse gas emissions from fuel consumption in the hydrogen production process; P represents the carbon emission factor of the emission source. i The total weight of hydrogen and co-produced products that participate in the allocation of greenhouse gas emissions from hydrogen production; S4 calculates the hydrogen consumption coefficient of the hydrogenation unit, including: S41 Data on hydrogen consumption and raw material quantity of the extraction and hydrogenation unit; S42 Calculate the hydrogen consumption per ton of hydrogenation processing capacity of the hydrogenation unit; The calculation formula is: ； In the formula, P H2 P represents the hydrogen consumption of the hydrogenation unit during the statistical period; P represents the amount of raw materials processed by the unit during the statistical period. S43 Calculate the hydrogen consumption coefficient of the hydrogenation unit; The calculation formula is: ； In the formula, E H2 Carbon emissions per ton of hydrogen produced by a hydrogen production unit; I H2 Hydrogen consumption per ton of processing capacity of the hydrogenation unit; The hydrogen consumption coefficient of the hydrogenation unit; S5 calculates the carbon footprint of lubricating oil base oil products during the production stage.

2. The method according to claim 1, characterized in that, The basic process flow in S11 includes two types: the old three-stage process and the hydrogenation process. The old three-stage process includes an atmospheric and vacuum distillation unit, a ketone-benzene dewaxing unit, a furfural refining unit, and a clay refining unit. The hydrogenation process includes an atmospheric and vacuum distillation unit, a hydrocracking unit, and a lubricating oil hydroisomerization unit.

3. The method according to claim 1, characterized in that, The production facilities involved in S13 include one or more of the following: atmospheric and vacuum distillation unit, ketone-benzene dewaxing unit, furfural refining unit, clay refining unit, hydrocracking unit, and lubricating oil hydroisomerization unit.

4. The method according to claim 1, characterized in that, The energy consumption data of the unit in S13 includes the consumption of primary energy sources such as coal, oil, natural gas and refinery gas in the unit's heating furnace during the statistical period, as well as one or more of the following: electricity, medium-pressure steam, low-pressure steam, fresh water, circulating water, demineralized water, deoxygenated water, nitrogen and compressed air; the processing data of the unit in S13 refers to the total amount of raw materials processed by the production unit during the statistical period.

5. The method according to claim 1, characterized in that, The formula for calculating the energy consumption and emission coefficient of the production unit in S2 is as follows: ； In the formula, q k E represents the emission source consumption of the unit; k P is the carbon emission factor of the emission source. k The processing quantity of a unit device; This represents the energy consumption and emission coefficient of the production unit.

6. The method according to claim 1, characterized in that, S3 describes obtaining basic information about the hydrogen production unit, extracting energy consumption data and information on the output and disposal methods of the hydrogen production unit, including: Energy consumption data and hydrogen production data of S31 hydrogen extraction and production unit; S32 Obtain information on the disposal of byproducts from the hydrogen production unit, including the types, quantities, and treatment methods of the byproducts.

7. The method according to claim 1, characterized in that, The method for calculating the carbon footprint of lubricating oil base oil products during the production stage, as described in S5, includes: S51 Calculate the carbon emission coefficient of lubricating oil base oil produced by the old three-process manufacturing method; The calculation formula is: ； In the formula, e1 is the energy consumption emission coefficient of the device; i is the specific gravity coefficient of the device; S52 Calculate the carbon emission coefficient of lubricating oil base oil produced by the hydrotreating process; The calculation formula is: ； In the formula, e1 is the energy consumption and emission coefficient of the device; e2 is the hydrogen consumption coefficient of the hydrogenation device; and i is the specific gravity coefficient of the device. S53 Calculate the carbon footprint of lubricating oil base oil products during the production stage; The calculation formula is: ； In the formula, e O The carbon emission coefficient for producing lubricating oil base oil using the old three-process method; i O The ratio of base oil for lubricating oil produced using the three traditional processes; e H2 Carbon emission coefficient for the production of lubricating oil base oils via the hydrotreating process; i H2 The proportion coefficient for base oils used in the hydrotreating process for producing lubricating oils; The carbon footprint of lubricating oil base oil products during the production stage.

8. A calculation apparatus for calculating the carbon footprint of a lubricating oil base oil product that implements the calculation method of any one of claims 1-7.

9. The computing device according to claim 8, characterized in that, The computing device includes: The data extraction and process drawing unit is used to extract basic information and data of the production process of lubricating oil base oil products, extract energy consumption data and processing data of the equipment involved in the production; and draw the production process flow chart of lubricating oil base oil products based on the material balance of the equipment by dragging and dropping. The unit calculates the energy consumption coefficient of the equipment based on the equipment's energy consumption data and processing volume. The carbon emission calculation unit for one ton of hydrogen from a hydrogen production unit calculates the carbon emission per ton of hydrogen based on the basic information of the hydrogen production unit and the output and disposal methods of co-produced products. The hydrogen consumption coefficient calculation unit for the hydrogenation unit calculates its hydrogen consumption coefficient based on the hydrogen consumption and processing volume of the hydrogenation unit. The carbon footprint calculation unit for lubricating oil base oil products calculates the carbon footprint of each stage of lubricating oil production based on the output of different lubricating oil base oil production processes.

10. A memory, characterized in that, Includes a software program adapted for a processor to perform the steps of any of the computation methods described in claims 1-7 above.

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