6results about How to "Realize energy utilization" patented technology

This invention provides a method for preparing hydrogen and sulfur from solid waste gypsum through reduction and acidification in a cement kiln, relating to the field of solid waste disposal technology. The method involves targeted local modifications to a novel dry-process cement clinker rotary kiln production system. Using desulfurized gypsum, phosphogypsum, and other solid waste gypsum as raw materials, the gypsum is crushed, ground, preheated, and dehydrated. Then, it is calcined in a modified three-lobe gravity semi-suspended rotary kiln at 800–1100℃ in a reducing atmosphere to generate high-purity calcium sulfide. After sealed cooling, the calcium sulfide reacts with byproduct hydrochloric acid to produce high-purity hydrogen sulfide. The hydrogen sulfide is then used to co-produce hydrogen and sulfur via a medium-assisted electrochemical decomposition method, or high-purity sulfur can be directly prepared using the Claus process. This invention achieves full resource utilization of solid waste gypsum using existing cement kiln equipment, requires minimal modification, has low investment costs, and enables the cascade utilization of CO waste gas and kiln waste heat, reducing overall energy consumption by more than 30% compared to traditional processes.

This invention discloses an exhaust gas burner, relating to the field of burner technology. The invention includes a base, a one-way pipe valve, an outer air duct, an exhaust gas combustion core, a combustion protection cover, and an auxiliary combustion core. The base includes a cylindrical section with vertically connected sections; a circular plate is fixed to the upper end of the cylinder; an internally threaded pipe is fixed through the center of the circular plate; a first flange is fixed to the lower end of the circular pipe; the output end of the one-way pipe valve is installed at the lower end of the internally threaded pipe inside the cylinder; the outer air duct is bolted to the upper end of the circular plate; the lower end of the exhaust gas combustion core mates with the inner wall of the outer air duct. Through the combination of the base, one-way pipe valve, outer air duct, exhaust gas combustion core, combustion protection cover, auxiliary combustion core, and igniter, the exhaust gas burns between the combustion protection cover and the auxiliary combustion core after ignition. During combustion, the auxiliary combustion core is at a high temperature, and the auxiliary combustion ring is red-hot. The combustible exhaust gas and oxygen undergo a strong oxidation reaction, effectively reducing the hazards caused by exhaust gas emissions.

The invention belongs to the technical field of utilization of biomass energy, and particularly relates to a system and a method for preparing liquid fuel by coupling biological methane with biomass pyrolysis gas, the system comprises a methane generation device, a purification device, a pyrolysis device, a separation device, a melting device, a steam generation device, a reforming device, a conversion device and a synthesis device; biomass is subjected to an anaerobic fermentation reaction in the methane generation device to generate biogas and biogas residues, and the biomass is subjected to a thermal cracking reaction in the cracking device to obtain biochar and cracked gas; biogas is fed into the synthesis device after being subjected to purification and reforming treatment, cracked gas enters the synthesis device after being treated by the separation device and the conversion device, liquid fuel is obtained through catalytic reaction of the two gases, and biogas residues and biochar are combusted in the melting device to supply heat and steam. According to the invention, preparation processes of biological methane and biomass pyrolysis gas are coupled, and the difference of hydrogen-carbon ratios in different products is fully utilized, so that efficient and low-carbon preparation of liquid fuel from biomass is realized.

The process comprises a material mixing unit, a methanol synthesis unit and a three-stage separation and purification unit which are communicated in sequence, the material mixing unit is used for mixing hydrogen and carbon dioxide, and the methanol synthesis unit is used for mixing the hydrogen and the carbon dioxide to generate crude methanol; the third-stage separation and purification unit is used for refining and purifying the crude methanol; the process of preparing methanol can be realized through clean gas carbon dioxide and hydrogen, energy utilization of carbon dioxide can be realized, and the hydrogen energy industry is optimized; high-temperature crude methanol discharged from a methanol synthesizer is used as heat supply, so that cyclic utilization of heat energy is realized; water electrolysis is adopted for hydrogen production, reaction ways are reduced, and energy consumption and generation of by-products are reduced; a three-tower series rectification mode is adopted, operation parameters are optimized, the methanol recovery rate is increased, and the investment cost is reduced.

The application discloses a system for utilizing all components of humus soil, which comprises the following steps: performing hydraulic screening, drying and calcination treatment on humus soil to obtain ecological active soil, and the 28d activity index of the ecological active soil is above 85%. Through efficient heat transfer in the system, mutual influence and mutual restriction between parameters, a synergistic coupling whole is formed, and a full-component quality enrichment utilization-uniform rapid heat activation system is constructed. The material flow and energy flow of the whole process system are highly synergistically coupled, the preparation cost is reduced, and harmless treatment of the humus soil and materialization and energy utilization of all components are realized.

The invention relates to the technical field of waste resource treatment, in particular to an animal carcass treatment method which comprises the following steps: after animal carcasses are cooked, collecting first solid residues, first slurry and waste gas; performing three-phase centrifugal treatment on the first slurry, and collecting a liquid phase and a solid phase; the solid phase and the first solid slag are mixed and then subjected to harmless treatment; performing condensation treatment on the waste gas to obtain waste liquid, mixing the waste liquid with the liquid phase to obtain second slurry, and performing anaerobic digestion treatment on the second slurry to generate biogas. Steaming treatment is firstly carried out, so that sterilization and disinfection can be realized, and separation of parts such as bones, meat and fur is facilitated. The first slurry is subjected to three-phase centrifugal treatment, a liquid phase, a solid phase and an oil phase are separated out, the main component of the oil phase is grease and can be used for multiple purposes such as biological fuel oil processing, the solid phase and the first solid residues can be jointly subjected to harmless treatment, and the liquid phase and waste liquid formed by waste gas can be jointly subjected to anaerobic digestion treatment to generate biogas; and resource utilization and energy utilization are realized.