34results about How to "Ensure a virtuous circle" patented technology

The invention discloses a method for producing mineral wool by using early-stage molten-state steel slag of a converter, and belongs to the technical field of production of mineral wool. The method comprises the following steps: pouring the early-stage molten-stage steel slag of the converter in a smelting furnace, adding a reducing agent and a modifier in a pouring process, and carrying out reducing and modifying; and after stirring, mixing evenly and standing for 0.5-1.5 hours, feeding slag at the temperature between 1,380 DEG C and 1,430 DEG C to wool producing equipment and processing into the mineral wool. Double advantages of 'residues' and 'heat' of the molten-state steel slag are played fully, ferrosilicon and aluminum granules are used as reducing agents, reaction of silicon, aluminum and iron oxide is silicothermal reaction and aluminothermal reaction, a large amount of thermal can be produced along with the reaction, and heat supply in a whole reducing and modifying process can be satisfied. After valuable elements are recycled, residues are directly prepared into the mineral wool with high additional value, the molten-state steel slag is comprehensively recycled, the problem of emission of the steel slag is solved, furthermore, the production cost of the mineral wool can be reduced, and the economic benefit and the environment benefit are good.

The invention discloses a granular compound fertilizer prepared by using modified starch as a binder. The compound fertilizer is characterized by comprising the following raw materials in parts by weight: 15-40 parts of nitrogenous fertilizer, 20-40 parts of phosphatic fertilizer, 20-42 parts of potash fertilizer and 0.5-2.0 parts of binder. The raw materials of the binder consist of 35-45 parts by weight of starch, 1-5 parts by weight of phosphate, 0.1-3 parts by weight of oxidant, 0.1-1 part by weight of coupling agent and 40-60 parts by weight of water. The binder contained in the granular compound fertilizer has good adhesion capability, so the granular compound fertilizer disclosed by the invention has the advantage that adhesive capability is good, the rotary drum granulation pelletizing ratio is high and the material returning rate is reduced; the pertinence is strong and the fertilizer efficiency is completely releases, so that the soil is hard to harden and the yield-increasing effect is prominent; and the virtuous circle of the soil nutrient can be maintained, the water and nutrient retention capability of the soil is improved and the resistance of the crops is enhanced.

The invention discloses a water push and oxygenation device for pond internal circulation flowing water culture. the water push and oxygenation device comprises an oxygenation machine which is connected with multiple oxygenation pipes through pipelines; the oxygenation pipes are provided with multiple holes for pushing water and generating oxygenation; the multiple oxygenation pipes are arranged side by side; the oxygenation pipes are welded with a fixing support. The device of the invention is suitable for culture of multi-kinds and multi-sizes; equalized sale is achieved and capital turnover is accelerated; the production cost can be reduced by 35%; 75% fish metabolite and residual forage can be effectively collected so that virtuous circle of the pond is guaranteed. The water push and oxygenation device for pond internal circulation flowing water culture is used for culturing fish with flowing water; air is used for lifting water and water pushing is more efficient; the cost is lower and there is no need of maintenance; water lift by air can effectively realize water push and oxygenation; flowing water passing through the pond can improve water quality and flush excrement of fish to downstream so as to collect and clear the excrement; floating and sunken solid body can be removed.

The invention provides a construction method of a cascade reservoir ecological power generation multi-objective medium-and-long-term random scheduling model and an optimal scheduling method. The method comprises the following steps of: 1, analyzing random reservoir inflow runoff of a cascade reservoir, and employing an ecological water demand level index method to calculate a suitable ecological flow as an ecological flow reference value; 2, establishing a cascade reservoir ecological power generation multi-objective medium-and-long-term optimization scheduling model which comprises a cascadereservoir power generation amount closeness objective function, an ecological flow closeness objective function and constraint conditions; 3, adopting a reinforcement learning SARSA algorithm to solveand learn the model in different random storage runoff scenes, and introducing a heuristic function and a utility trace function to improve the precision and solving speed of the algorithm; and 4, according to a scheduling rule learned by the algorithm, obtaining a cascade reservoir medium-and-long-term scheduling scheme meeting the maximum ecological power generation comprehensive closeness. According to the methods of the invention, the comprehensive utilization benefit of water resources is improved, and the scheduling effect is improved.

The invention relates to a biogas power generation and complementary energy recovery system. The biogas power generation and complementary energy recovery system comprises a dual-film gas holder (91),a biogas decarbonization device (92), a biogas dehydration device (93), a biogas pressurizing pump (94), a granulating machine (95), a biogas power generator group (96), an exhaust heat boiler (97),a softened water processor (99) and a hot water jar (100), wherein a biogas output opening of the dual-film gas holder (91) communicates with an air inlet of the biogas decarbonization device (92) through an air pump. The biogas power generation and complementary energy recovery system disclosed by the invention has the advantages that heat quantity carried by discharged biogas residues and discharged biogas fluid is effectively utilized, so that energy resource consumption required for maintaining the fermentation temperature is reduced, the normal operating of a biogas project is effectivelymaintained, benign circulation of the biogas power generation and complementary energy recovery system is maintained, and the operating cost of the biogas project is reduced; the granulating efficiency of the granulating machine is high, the granule perfection degree is good, and environmental pollution cannot be generated; and ash cannot enter a transmission shaft of the granulating device, so that the service life is long.

The invention discloses a dissolution process and desulfurization method for producing aluminum oxide by using high sulfur bauxite. The method is characterized in that the sulfur content of a circulating mother liquor is controlled under the suitable conditions, bayer dissolution is performed on the high sulfur bauxite by adopting a 'low temperature and high alkali' process, sulfur in ores transferring into a sodium aluminate solution is reduced while obtaining a relatively high aluminum oxide dissolution rate, a part of sulfur is consumed through self-balancing of a system, and appropriate desulphurization is performed on a decomposition mother liquor or causticized liquid by using barium salt when the sulfur content in the system is accumulated to a certain extent so as to keep the virtuous circulation of the whole production process. The dissolution process and desulfurization method, disclosed by the invention, do not change the existing bayer-method aluminum oxide production process, are low in cost and simple and convenient in operation, and provide a good foundation for the industrialization of the high sulfur bauxite; desulfurization slag can be used as a raw material for preparing a barium salt desulfurizer so as to further reduce the production cost.

The invention relates to a dehydration method of heterogeneous sludge. According to the dehydration method, firstly, mixed sludge is pre-dehydrated by a chamber type filter press and crushed by a crusher, and then crushed sludge filter cakes are put into a steel belt filter press for secondary crushing through a middle hopper bin. The dehydration method disclosed by the invention can effectively solve the problem about intermittent work mode of an existing filter press, changes intermittent work into continuous work by effectively combining the chamber type filter press with the steel belt filter press, and integrates the characteristics that a plate frame type filter press realizes rapid dehydration when treating low-concentration mixed sludge and the steel belt filter press realizes rapid dehydration when treating high-concentration mixed sludge, so that the dehydration time is effectively saved and the production speed is increased; meanwhile, due to the dehydration process, the usage amounts of additives can be saved and the virtuous circle of enterprise production is guaranteed.

The invention discloses a water ecology constructing technology under fish preventing environment, which comprises the following steps: 1)constructing a water ecotope, arranging the ecology fences at water bottom according to underwater condition, tightly arranging the ecology fence at a flat place, tightly arranging the ecology fences at the rough place, wherein the gaps are allowed; 2)arranging a layer of fishing net on the ecology fence of the water ecology, covering the gaps at the water ecotope by the fishing net, and fixing the fishing net, wherein the aperture of the fishing net is 10-15mm. The water ecology constructing technology under fish preventing environment comprises a rectangular framework, 4-8 supporting legs are fixed at a same side of the rectangular framework, the fishing nets are provided on the rectangle framework, and the aperture of the fishing net is 10-15mm. The water ecology constructing technology under fish preventing environment can conveniently preventing the destroy of harmful fish to the root of the submerged plants, the growth of the submerged plant is not obstructed, so that the whole water ecology system forms a benign circulation, and ecology environment is improved. The water ecology constructing technology under fish preventing environment has the advantages of simple technology, low cost and obvious effect for improving the water ecology environment.

The invention belongs to the technical field of river gushing water diversion, and particularly discloses a river gushing water diversion system and method, and the method comprises the following steps: S1, building the river gushing water diversion system; S2, enabling a detection unit to collect detection data of each river channel in real time; s3, judging whether the detection data of the current riverway is abnormal or not, if yes, entering the step S4, and otherwise, repeating the step S3; and S4, according to the detection data of the current riverway and the detection data of the adjacent riverway, controlling the corresponding riverway gate to be opened and closed, and conducting river gushing water diversion operation. The problems that in the prior art, reasonable river gushingwater diversion is lacked, virtuous cycle cannot be conducted on river gushing, and the standard reaching rate is low are solved.