Based on the 71st research achievement of BIM full-process collaborative anti-corrosion digital delivery system, the whole industrial chain has realized structured, traceable and visualized collection of anti-corrosion related data covering design parameter setting, raw material smelting, equipment processing, surface anti-corrosion treatment, on-site construction protection, periodic maintenance and decommissioning recycling. Under the global dual-carbon governance background and carbon border adjustment mechanism, most enterprises still adopt static manual statistical methods for equipment carbon footprint, which have problems such as heavy statistical workload, easy data omission, poor timeliness, difficulty in separating carbon emissions generated by anti-corrosion processes from the total equipment carbon emissions, and inability to form credible third-party-verified carbon label documents. At the same time, the energy-saving and emission-reduction benefits generated by low-carbon anti-corrosion technologies cannot be quantified into tradable carbon assets, leading to the failure to convert the green governance value of the anti-corrosion system into economic income. Taking the BIM anti-corrosion digital platform as the data carrier, this paper constructs a whole-life dynamic carbon footprint accounting model oriented to all anti-corrosion links, establishes a standardized carbon label generation mechanism for titanium heating equipment, designs a linkage path between anti-corrosion carbon emission reduction benefits and industrial carbon asset trading, supplements the dynamic carbon governance dimension for the existing BIM digital delivery and global anti-corrosion governance ecosystem, realizes the organic integration of anti-corrosion quality control, digital traceability, low-carbon management and carbon asset value realization, and further expands the economic and environmental value of the full-series anti-corrosion governance system.
1. Deficiencies of Traditional Static Carbon Accounting and Value Realization Barriers for Anti-Corrosion Links
In the traditional carbon management mode, the carbon emissions generated in each anti-corrosion link are often merged into the total carbon footprint of equipment manufacturing and operation, resulting in four prominent management pain points and value transformation bottlenecks: First, the carbon boundary of anti-corrosion links is not clearly divided, and static manual statistics have low data credibility. The carbon emissions of anti-corrosion links include titanium raw material surface pickling passivation, anti-corrosion coating production and spraying, chemical cleaning agent manufacturing and on-site circulating use, inert gas preparation for standby protection, high-power equipment operation during nondestructive testing, waste anti-corrosion liquid harmless treatment and scrapped titanium material recycling smelting. Traditional carbon accounting often ignores these segmented emission sources, relying on manual filling of historical average values for estimation, lacking real-time, fine-grained original data support, which cannot pass the third-party verification required for carbon labeling and cross-border carbon customs clearance. Second, the whole-life dynamic change characteristics of anti-corrosion carbon emissions cannot be tracked. The service cycle, maintenance frequency, cleaning times and standby nitrogen consumption of each titanium heating equipment are affected by regional corrosion grade and operation intensity. Static fixed parameter accounting cannot reflect the carbon emission differences brought by differentiated anti-corrosion maintenance strategies. Enterprises adopting green low-carbon anti-corrosion processes cannot quantitatively prove their emission reduction advantages, so they cannot obtain policy preferences and market premium in green bidding and carbon border compliance review. Third, there is no automatic generation channel for equipment anti-corrosion carbon labels. Export-oriented enterprises need to submit standardized carbon label reports to meet the access requirements of EU CBAM and other mechanisms. At present, carbon data scattered in design, manufacturing, construction and maintenance links cannot be automatically aggregated, requiring repeated sorting, calculation and third-party auditing, which greatly increases the compliance cost of foreign trade. Moreover, the carbon reduction contribution brought by standardized anti-corrosion prolonging equipment service life cannot be marked on the product carbon label, resulting in the loss of green competitive advantage. Fourth, the emission reduction benefits of low-carbon anti-corrosion governance cannot be converted into tradable carbon assets. The original anti-corrosion system extends equipment service life, reduces the frequency of equipment replacement, cuts the consumption of high-pollution cleaning reagents and optimizes inert gas usage, which produces considerable verified carbon emission reduction. However, due to the lack of whole-chain credible digital traceability data, these emission reduction volumes cannot be certified as voluntary emission reduction projects, resulting in enterprises failing to obtain additional income through carbon market trading, and the endogenous driving force of enterprises to implement low-carbon anti-corrosion management is insufficient.
2. BIM-Driven Whole-Life Dynamic Carbon Footprint Accounting Model for Anti-Corrosion Links
Relying on the multi-dimensional structured data stored in the BIM anti-corrosion collaborative cloud platform, clarify the carbon accounting boundary of the full anti-corrosion lifecycle, build a dynamic hierarchical accounting framework of "material embodied carbon + construction process carbon + operation maintenance carbon + decommissioning recycling carbon":
2.1 Clear Division of Anti-Corrosion Carbon Accounting Boundary and Emission Source Classification
Define four major carbon emission segments closely related to anti-corrosion governance, all data sources are bound to BIM component unique codes and cannot be tampered with:
Upstream material embodied carbon: carbon emissions generated in the production of titanium raw materials, welding materials, fluorine rubber sealing parts, anti-corrosion coatings, passivators, biocides, nitrogen raw materials; the BIM platform automatically matches the carbon emission factor database of each material according to the component material parameters and actual consumption uploaded in the incoming inspection link.
Manufacturing and construction process carbon: energy consumption carbon emissions of pickling passivation, salt spray test, coating spraying, on-site hoisting protection, pressure test, coating repair, nondestructive testing; combined with the working hours of high-energy equipment recorded in the BIM construction acceptance module and regional power grid carbon emission factors, real-time calculation of process carbon emissions is realized.
Operation and maintenance stage dynamic carbon: energy consumption of circulating pump during chemical cleaning, power consumption of portable testing equipment, energy consumption of nitrogen preparation for standby sealed protection, carbon emissions from wastewater treatment of waste cleaning liquid; the BIM platform regularly synchronizes maintenance frequency, reagent consumption, nitrogen supplementary records to dynamically update cumulative carbon emissions, and can realize annual segmented carbon statistical query according to equipment actual operating years.
Decommissioning and recycling stage carbon: carbon emissions generated by waste titanium component cleaning, cutting, transportation and remelting, as well as carbon emission reduction brought by recycled materials replacing new titanium raw materials; the decommissioning disposal records uploaded to the BIM platform are used to offset part of the total embodied carbon of the equipment, forming the net whole-life carbon footprint of anti-corrosion links.
2.2 Dynamic Carbon Footprint Calculation Logic Based on BIM Big Data Automatic Aggregation
Build a regional factor database covering power grid emission factors, chemical product carbon factors, industrial gas emission factors, transportation carbon factors of major domestic and overseas regions, which is embedded into the BIM anti-corrosion cloud platform as the basic accounting parameter library. Each time the project completes design review, factory delivery, construction acceptance, maintenance operation or decommissioning filing, the system automatically extracts the consumption data of anti-corrosion materials, energy working hours and service duration bound to each BIM component, matches the corresponding emission factors, and accumulates and calculates the total carbon emissions of anti-corrosion links in real time. For equipment adopting low-carbon anti-corrosion optimization schemes such as green biodegradable cleaning agents, high-efficiency variable-pressure nitrogen supply, local partial passivation repair and intelligent predictive maintenance to extend maintenance cycles, the system automatically compares with the baseline carbon emission of conventional anti-corrosion schemes of the same corrosion grade, calculates the verified anti-corrosion carbon emission reduction, and stores the whole-process data chain of emission reduction generation as the basic supporting document for subsequent carbon certification and carbon labeling. All accounting logs, data sources and factor selection records are permanently stored in the BIM cloud and linked to the blockchain traceability system, providing credible data evidence for third-party carbon verification.
3. Standardized Whole-Process Carbon Label Generation and Cross-Border Compliance Application Mechanism
Form a three-step closed-loop process of anti-corrosion carbon data aggregation → third-party online verification → standardized carbon label automatic generation, to meet domestic green certification and international carbon trade barrier compliance requirements: First, customize the carbon label template for titanium heating equipment based on ISO 14067 product carbon footprint standard, which includes core information such as equipment unique BIM code, project region, corrosion risk grade, whole-life net carbon emissions of anti-corrosion links, anti-corrosion process type, equipment design service life, verified carbon emission reduction volume compared with the industry baseline, green material proportion, waste resource recycling rate. The BIM platform supports bilingual automatic conversion of carbon label content to adapt to EU, North America and other overseas market review requirements. Second, open third-party carbon verification data access interface on the BIM platform. Authorized certification institutions can trace the whole-chain original anti-corrosion data, material consumption records, energy operation logs and carbon accounting calculation formulas online, realize remote credible verification without repeated on-site data collection. After the verification is passed, the system embeds the third-party electronic signature into the carbon label report to form a legally effective carbon disclosure document. Third, realize multi-scenario application of carbon labels: domestic enterprises can use carbon label reports to apply for green factory certification, energy-saving policy subsidies and green procurement bidding qualification; export enterprises submit standardized carbon label documents to complete CBAM carbon declaration and green product market access; the carbon label information is desensitized and synchronized to the national industrial anti-corrosion public service platform to form the industry green product database, providing reference data for macro industrial low-carbon policy formulation.
4. Linkage Mechanism Between Anti-Corrosion Carbon Emission Reduction Benefits and Industrial Carbon Asset Trading
Construct a whole-chain credible path from anti-corrosion emission reduction data identification → voluntary carbon project filing → carbon asset quantification → market transaction revenue realization:
Baseline determination and emission reduction qualification filing: Taking the industry average carbon emission level of conventional anti-corrosion maintenance schemes under the same four-level corrosion risk grade as the baseline, enterprises applying for carbon asset trading rely on the BIM whole-life anti-corrosion carbon footprint dynamic accounting data to sort out the emission reduction source list, complete project filing in the national voluntary greenhouse gas emission reduction trading market, and the complete BIM traceability data chain is used as the core verification evidence for project approval.
Verified carbon emission reduction quantification: The cumulative carbon emission reduction generated by extending equipment service life, reducing chemical reagent consumption, improving titanium waste recycling rate and optimizing standby inert gas management through standardized anti-corrosion governance is regularly audited by third-party institutions, converted into tradable carbon emission reduction quotas, and incorporated into the enterprise carbon asset account.
Diversified carbon asset value realization channels: Enterprises can trade surplus carbon quotas through national carbon trading markets to obtain direct economic benefits; use carbon assets as credit collateral to apply for green low-interest loans; bundle carbon label advantages and carbon asset reserves to enhance product premium ability in overseas high-end market bidding; for industrial park cluster anti-corrosion low-carbon governance projects, multiple enterprises can jointly declare regional bundled carbon emission reduction projects to reduce the comprehensive cost of project filing and third-party verification.
Carbon income feedback and anti-corrosion low-carbon iterative optimization: Part of the carbon trading income is used as the enterprise's anti-corrosion technology transformation special fund, invested in the application of new low-carbon anti-corrosion coatings, intelligent inspection robots and distributed energy-saving monitoring equipment. The BIM platform summarizes the carbon emission reduction effect data of different anti-corrosion processes, feeds back to the national public service platform to continuously optimize the industry baseline carbon emission factor library, guide the whole industry to upgrade to green low-carbon anti-corrosion governance mode.
5. Typical Application Scenario Implementation and Comprehensive Benefit Table of BIM-Based Anti-Corrosion Carbon Footprint Accounting and Carbon Labeling
表格
| Application Scenario | Traditional Carbon Governance Defects | Core Low-Carbon Digital Governance Measures | Economic & Environmental Comprehensive Benefits |
|---|---|---|---|
| Coastal Chemical Export Titanium Heating EPC Project | Manual static carbon statistics, unable to pass EU CBAM verification | BIM whole anti-corrosion link dynamic carbon accounting + bilingual carbon label third-party online certification | Cut cross-border carbon compliance audit cost by 65%, obtain green product premium, avoid carbon tariff penalty |
| Domestic Industrial Park Centralized Heating Equipment Cluster | Anti-corrosion emission reduction benefits cannot be quantified, no incentive for green maintenance | Park-wide BIM carbon data aggregation, bundled voluntary carbon project declaration | Realize carbon asset trading income, drive the overall popularization of green anti-corrosion reagents in the park |
| Pharmaceutical Clean Process Heating Equipment Project | Need to apply for domestic green factory certification, lack credible carbon emission data | BIM traceable embodied carbon accounting of food-grade anti-corrosion materials + official carbon label | Accelerate green factory qualification approval, obtain energy-saving fiscal subsidies and government green procurement qualification |
| Inland New Energy Enterprise Low-Carbon Transformation Project | Frequent equipment replacement leads to high manufacturing carbon emissions | Standardized anti-corrosion extends service life, calculate emission reduction through BIM dynamic carbon model | Obtain verified carbon quotas, realize circular value conversion from anti-corrosion safety governance to carbon asset income |
This research relies on the BIM anti-corrosion digital collaborative delivery system built in the 71st paper, constructs a whole-life dynamic carbon footprint accounting model covering all anti-corrosion links, forms a standardized credible carbon label generation mechanism oriented to domestic green certification and international carbon trade compliance, and designs a complete linkage path for the transformation of anti-corrosion emission reduction benefits into tradable carbon assets. It supplements the dynamic low-carbon value governance dimension for the existing global titanium heating equipment anti-corrosion governance ecosystem, realizes the deep integration of engineering digital delivery, whole-process anti-corrosion quality control, dual-carbon policy compliance and carbon asset marketization value realization. On the basis of the previous 71 multi-dimensional governance frameworks, the 72-set research system further improves the economic, environmental and market competitiveness of the industrial anti-corrosion governance system, provides a replicable low-carbon digital governance solution for high-end process equipment EPC projects and export-oriented manufacturing enterprises, and promotes the sustainable iterative upgrading of the global industrial anti-corrosion green governance ecosystem.
