3results about How to "Reduce emission intensity" patented technology

This invention provides a method and system for hydrothermal-roasting coupled cascade separation and full-component resource recovery of vanadium-phosphorus iron, belonging to the field of resource utilization technology. The invention includes raw material pretreatment, hydrothermal pre-dephosphorization, low-temperature composite salt roasting for vanadium extraction, water leaching and vanadium recovery, and molten reduction alloying. This invention pioneers a coupling mechanism between "hydrothermal pre-dephosphorization" and "low-temperature composite salt roasting for vanadium extraction," and connects it with "molten reduction alloying," forming an inseparable cascade separation and full-scale recovery closed-loop system. Under mild conditions, it achieves a phosphorus removal rate exceeding 92% and a vanadium conversion rate exceeding 99%, reducing energy consumption by approximately 30% and solid waste emissions by more than 85% compared to traditional processes. It simultaneously produces three high-value products: high-purity vanadium pentoxide, agricultural phosphate, and stainless steel master alloy, possessing multiple advantages such as high resource utilization, clean and low-carbon operation, and significant economic benefits.

This invention relates to the field of microgrid technology, specifically providing a control method, device, and medium for a DC microgrid based on a dynamic carbon factor. The method includes: acquiring the current state information of the DC microgrid system; inputting the state information into an improved SAC controller capable of deep reinforcement learning; the improved SAC controller comprising a policy network, two evaluation networks, a dual-mode hybrid control module, an adaptive weighted reward module, and a hierarchical experience pool module; outputting the operating condition determination result through the dual-mode hybrid control module; adaptively outputting the droop coefficient of each node in the DC microgrid based on the operating condition determination result; calculating the control voltage and power allocation of each node in the DC microgrid at the next moment, and controlling the DC microgrid to allocate power according to the dynamic carbon factor. This addresses the problems of related technologies where DC microgrids only consider power balance, resulting in high carbon emissions and poor control accuracy.

The application discloses a mutant of expansin protein from rumen anaerobic fungi, a coding gene and application thereof, and belongs to the technical field of biological genetic engineering. The wild-type expansin protein PFSWO2_1 is subjected to site-directed mutation, and mutants with higher expression, better thermal stability and stronger synergistic effect with cellulase, namely the mutants PFSWO2_1-N1, PFSWO2_1-N2 and PFSWO2_1-N3, are obtained. The mutants are successfully expressed in Pichia pastoris, the hydrogen bond network between cellulose molecules is destroyed, the mutants can significantly enhance the enzymolysis efficiency of cellulase on lignocellulose, the mutants can not only improve the utilization rate of agricultural wastes such as straws in feed, but also can inhibit the generation of methane by regulating the fermentation parameters and microbial community structure in the rumen in vitro fermentation process, and the mutants have important application value in reducing the greenhouse gas emission of the animal husbandry.