6results about How to "Efficient cascade utilization" patented technology

The utility model discloses a composite bypass ventilation system for gradient utilization of waste heat, which comprises a preheater system provided with a kiln tail smoke chamber and a kiln head grate cooler. The composite bypass ventilation system sequentially comprises a cyclone separator, a waste heat boiler, a dust collector, a salt washing branch and a smoke branch, wherein the salt washing branch and the smoke branch are connected to the dust collector in parallel. The three-stage separation steps of cyclone separator solid-gas separation, preheater solid-gas separation and dust collector solid-gas separation are formed, harmful elements in a cement kiln system are reduced, and the crusting and blocking risks of the preheater are relieved. In addition, co-treatment of the flue gas and the waste gas of the environment-friendly workshop is realized at the cyclone separator; at the waste heat boiler, a part of steam is generated and supplied to a salt water evaporation system for salt production; flue gas with fine ash separated through the dust collector is conveyed into the salt washing branch at the dust collector to jointly form a three-stage waste heat utilization step, and the operation cost of cement enterprises is saved.

The application provides a method for preparing sulfuric acid from pyrite concentrate powder and belongs to the technical field of resource utilization. The method comprises the following steps: (1) crushing and screening pyrite concentrate powder raw materials to obtain fine pyrite concentrate powder; (2) introducing air into a fluidized roasting furnace, suspending and roasting the fine pyrite concentrate powder in the furnace, cooling the outlet furnace gas by heat absorption, further water-moistening the residue after roasting of the fluidized roasting furnace and slag dust generated in the production process after water cooling, and then transporting the residue and the slag dust to obtain roasted sand; (3) performing dust removal, mist removal, further cooling and drying treatment on the outlet furnace gas in the step (2) to obtain SO2-containing furnace gas, spraying sulfuric acid on the SO2-containing furnace gas after air supplement, cooling, and then storing liquid into a finished product storage tank and performing drying treatment on gas; and (4) performing catalytic oxidation and heat exchange treatment on the dried gas, absorbing SO3 in the furnace gas by using concentrated sulfuric acid, performing hydrogen peroxide treatment on tail gas, and then performing mist removal and standard discharge. The method has the advantages of simple production process, environmental protection in the production process and improved resource utilization rate.

This invention relates to the field of industrial integrated energy management technology, specifically to a hybrid energy storage system, an efficient collaborative scheduling method, and a storage medium suitable for continuous production industrial plants. The system comprises an information sensing and supply layer, a hybrid energy storage and conversion layer, and an optimization decision and control layer connected sequentially. The information sensing and supply layer acquires multi-dimensional information data and multi-energy flow supply data. The hybrid energy storage and conversion layer realizes multi-grade thermal energy storage, electrochemical energy storage, and thermoelectric coupling conversion. The optimization decision and control layer executes scheduling optimization algorithms and includes a heat load prediction module, a multi-source collaborative optimization model module, and a working mode switching module. This invention, by constructing a three-layer architecture and based on MES production scheduling, weather forecasts, and waste heat data, forms a production plan-driven thermal energy storage scheduling method, realizing a shift from passive energy supply to active process matching, significantly improving the planning and accuracy of energy supply.

The invention discloses a wide-working-condition steam generation system based on a multi-source coupling heat pump and a dynamic adjusting method, and belongs to the technical field of industrial steam production and comprehensive utilization of energy, the wide-working-condition steam generation system comprises a heat pump circulation subsystem, and the heat pump circulation subsystem comprises an evaporator, a low-temperature heat regenerator, a compressor and a high-temperature heat regenerator which are connected in sequence; the electric heater and the combustor are connected behind an outlet of the high-temperature heat regenerator in a shunting manner; the outlets of the electric heater and the combustor are converged, then are sequentially connected with the high-pressure cooler, the first low-pressure cooler, the second low-pressure cooler and the throttling valve and are connected back to the evaporator. According to the invention, three types of energy sources, namely, chemical energy, solar energy, wind energy and other new energy power generation electric energy of oil field associated gas and low-grade heat energy of a ground source, are integrated, a ground source heat pump is used for providing a basic heat load, new energy power generation electric heating and associated gas combustion are used for raising the temperature, and steam output ends with different temperatures and pressures are configured, so that the energy efficiency is improved. And efficient gradient utilization of energy and wide-working-condition steam production are achieved.

This invention discloses a low-temperature waste heat-driven dilute acid concentration device, relating to the technical field of waste heat recovery and concentration. It includes a preheating box with preheating pipes inside, and temporary storage tanks at both ends. This invention preheats the dilute acid using a grid-plate heat exchange structure within the preheating box, and then uses mechanical compression in a pressurized tank to increase the temperature and grade of steam for secondary heating. This achieves efficient cascade utilization of low-grade industrial waste heat, significantly reducing the overall energy consumption of the concentration process. Furthermore, the pressurized component compresses the steam, significantly increasing the temperature threshold of the heated dilute acid and effectively improving concentration efficiency. The pressurized component is equipped with a linkage shaft and bevel gear transmission structure, allowing adjustment of the eccentricity of the support shaft, thereby flexibly changing the piston plate stroke and compression intensity. This enables precise matching of heating power according to the initial concentration of the dilute acid and the concentration target, avoiding energy waste caused by overheating.

The utility model belongs to the field of energy comprehensive utilization technique, disclose a kind of comprehensive heating system, belong to the field of energy comprehensive utilization technique. Including geothermal heating system, expand economizer, heat network heater, combined cycle unit system;Wherein through expand economizer and geothermal heating system collaborative work, utilize waste heat boiler flue gas waste heat and geothermal energy respectively with heat network return water preheating, again through heat network heater, utilize the steam turbine steam preheated heat network water heating to meet the hot water of heat network requirement, supply resident user use. The system not only effectively utilizes combined cycle unit waste heat boiler tail flue gas waste heat and geothermal energy, realizes energy comprehensive efficient utilization. Meanwhile, effectively reduce the steam extraction flow of combined cycle unit steam turbine, improve the output of combined cycle unit, reduce the energy consumption level of combined cycle unit.