3results about How to "Convenient accounting" patented technology

The present invention provides a carbon emission accounting method and system for an ex situ remediation technology for contaminated soil, including determining a variety of activity elements in the carbon emission of the ex situ remediation technology for contaminated soil and the carbon emission factors corresponding to each activity element, determining the occurrence amount and carbon emission factors of the various activity elements, calculating the carbon emissions of a variety of links, and calculating the carbon emission level per unit of contaminated soil volume; the carbon emission accounting method of the present invention adopts an applicable carbon emission factor acquisition approach through boundary demarcation and inventory analysis, unifies the carbon emission accounting process of a variety of ex situ remediation technologies, can accurately evaluate the carbon emissions of the soil ex situ remediation process, is helpful to carry out carbon emission accounting for a variety of contaminated soil types and remediation projects in multiple regions, has good application potential, and at the same time, through the setting of the carbon emission accounting system, makes the collection and accounting process more scientific and convenient.

The invention relates to a product supply chain carbon footprint accounting and optimizing method, which comprises the following steps of S1, acquiring product information, inputting a refined product information splitting model, and deconstructing a product into a plurality of modules; s2, acquiring full life cycle information of a supply chain of each module of a product, and performing clustering analysis on the carbon footprint accounting record to obtain a multi-dimensional calculation power distribution coefficient; s3, obtaining a node source factor data set based on the multi-stage carbon footprint accounting node, and carrying out carbon footprint data acquisition and standardization processing on each module of the product to obtain multi-stage carbon source data; s4, performing carbon footprint accounting and correction on the multi-stage carbon source data based on the multi-dimensional computational power distribution coefficient to obtain a multi-stage corrected carbon footprint accounting result; and S5, generating a product carbon optimization scheme according to the basic information of each module of the product and the multi-stage correction carbon footprint accounting result, and optimizing the product supply chain carbon footprint. Compared with the prior art, the accuracy and comprehensiveness of product supply chain carbon footprint accounting can be further improved.

This invention discloses an operation control method for a CO₂ circulating catalytic biomass gasification polygeneration unit, relating to the field of distributed biomass energy utilization and process control technology. The method includes the following steps: inerting and purging are performed based on the gas supply and atmosphere control unit to determine the unit's operating boundaries; during the pyrolysis stage, active sites are constructed in situ on the carbon through alkali metal Na / K dosage control; during the gasification stage, recycled CO₂ and / or purified flue gas are introduced and the CO₂ / steam ratio is controlled to drive the reaction unit to stably produce gas and generate biochar as a byproduct; tar and dust are controlled through staged condensation-filtration-switchable catalytic cracking; a micro gas chromatography calibration dataset is established and sensor array data is fused; soft measurement and closed-loop control are used to adjust the feed rate, bed temperature, and recycled CO₂ ratio; and emergency shutdown is executed when safety interlock conditions such as backfire, CO leakage, and pressure difference abnormalities are triggered. This method solves the problems of large calorific value fluctuations, easy tar blockage, and high monitoring and control costs in distributed biomass gasification, achieving improved efficiency and safe and stable operation.