90 results about "Embodied carbon" patented technology

The invention discloses a method for acquiring target values of boiler optimized operation economic parameters. The method comprises the following steps of: establishing a boiler combustion characteristic neural network mathematical model by using a neural network technology according to boiler variable coal type combustion optimized operation working condition data; according to the boiler combustion characteristic neural network mathematical model, optimizing air distribution and coal distribution combustion operation parameters of each historic working condition of a boiler by using an optimized combination method of a thermal test algorithm and a genetic algorithm and by taking the maximization of boiler comprehensive efficiency as an optimization target; comparing the air distribution and coal distribution combustion operation parameters of each historic working condition with corresponding optimized values, determining an optimized working condition, and establishing a target value calculation model for boiler main steam parameters, auxiliary engine power consumption, smoke exhaust temperature, fume oxygen content and fly-ash carbon content by taking data of a historic working condition which is marked as the optimized working condition as a sample and by using the neural network technology; and calculating a boiler main steam parameter target value, an auxiliary engine power consumption target value, a smoke exhaust temperature target value and a fume oxygen content target value under the conditions of different loads and different coals by using the obtained target value calculation model.

The invention provides a sludge soil conditioner and a preparation method and application thereof, belonging to the technical field of sludge treatment. The preparation method of the sludge soil conditioner comprises the following steps: pre-dehydrating sludge to obtain first sludge; carrying out thermal hydrolysis reaction on the first sludge to obtain second sludge; sequentially carrying out filter pressing dehydration, crushing and drying on the second sludge to obtain sludge particles; mixing the sludge particles and biomass auxiliary materials, and performing pyrolysis reaction to obtainthe sludge soil conditioner. The preparation method meets the principles of reduction, harmlessness, stabilization and resource utilization, and has low cost and high efficiency. By adding the biomassauxiliary materials, the content of organic matters in the material is increased, a large amount of pyrolysis gas can be generated, the self-balance of system heat is realized, the dependence on an external fuel is reduced, and the operation cost is greatly reduced; the carbon content in solid carbon slag is improved, and the requirement of the soil conditioner for forestry is met.

The invention relates to a microwave shaft furnace direct reduction process adopting pellets and coal powder. According to the process, direct reduced iron is produced from raw material pellets and external matched material coal powder in a continuous microwave shaft furnace, selection heating, rapid heating, volume heating, activated metallurgical chemical reaction and other features of the microwave are fully utilized, gasification of fixed carbon is accelerated, and iron oxide is further reduced, so that the reduction temperature is lowered and the reaction time is shortened. The coal powder can serve as both a reducing agent and a heating element in the process, a gas-solid-heat exchange step is simplified, energy is saved and emission is reduced. The process contains low free oxygen content, and can produce CO with high purity of 95% or above; and the process is compact in structure, high in metallization degree, which is 94-98%, low in carbon content, which is less than 0.2%, andis low in quality requirements on coal powder, thereby being an environment-friendly iron making process.