40results about How to "Solve the problem of excess" patented technology

The invention discloses a method for producing cathode nickel by the selective leaching-electrodeposition of high nickel matte, which relates to a method for producing the cathode nickel by hydrometallurgical refining of the high nickel matte. The method is characterized in that the cathode nickel production process comprises the following steps of: (1) performing first-stage normal-pressure leaching on the high nickel matte; (2) removing cobalt from first-stage normal-pressure leachate for purification and producing electric nickel by electrodeposition; (3) adding a sulphur fixing agent into a first-stage leaching residue to perform second-stage pressing and sulphur fixing leaching, and returning the leachate which is obtained by the second-stage pressing and sulphur fixing leaching to perform first-stage normal-pressure leaching; and (4) desulfurating and roasting the leaching residue obtained by the second-stage pressing and sulphur fixing leaching to obtain a roasted product, and returning the roasted product which is used as the sulphur fixing agent in the step (3). The method of the invention effectively solves the problem of acid excess of a production system, has a high nickel recovery rate and low production cost, is highly adapted to different high nickel matte raw materials and favorable for environmental protection, and can obviously reduce the waste water emission in the production.

The invention discloses a solar energy-soil source heat pump seasonal balance heating system comprising a solar energy heat collector, a water tank and a solar energy heating heat-exchange coil pipe, wherein a ground source heat-pump heat-exchange coil pipe is arranged in the water tank and communicated with a plate heat exchanger by a second circulation pipeline; a second water pump, a second water pump, a first constant pressure tank and a magnetic valve are arranged on the second circulation pipeline; the plate heat exchanger is communicated with a heat pump assembly by a third circulation pipeline; a third water pump, a third constant pressure tank and a magnetic valve are arranged on the third circulation pipeline; the plate heat exchanger is communicated with an underground burying pipe by a fourth circulation pipeline; the underground burying pipe is buried underground and is provided with an underground insulating device; and a fourth water pump, a second constant pressure tank and a magnetic valve are arranged on the fourth circulation pipeline. The solar energy-soil source heat pump seasonal balance heating system can store redundant heat generated by a summer solar energy heat collecting system in winter to use, effectively save energy sources, increase the use efficiency of solar energy and solve the detects of the traditional earth source heat pump.

The invention discloses double-fluid rapid hardening slurry for roadway grouting and mollisol compaction grouting, remedying the defects that a cement-sodium silicate slurry concrement body has poor durability, and the grouting process is complicated. The slurry contains fluids A and B; the fluids A and B are injected at equal volume, and the on-site operation is simple. The fluid A contains 50 percent of portland cement, 0.5-0.75 percent of inorganic sodium salt, 0.025-0.05 percent of organic alcohol early strength agent and the balance of water; and the fluid B contains 43.6-48.8 percent of coal ash, 13.9-20.05 percent of sodium silicate and the balance of water. The performances of the slurry are shown as follows: the gelation time is adjustable within the range of 36s-124s, the concrement rate is 100 percent and the early compression strength is high; moreover, the concrement body has good durability and does not crack or pulverize. Compared with the original cement-sodium silicate slurry, the grouting process is simple, the durability of the slurry concrement body is obviously improved, the sodium silicate consumption is saved and the grouting cost is greatly reduced.

The invention relates to a laser power supply device capable of realizing constant power charge. The laser power supply device comprises a rectifying circuit, a filter circuit, a power charging module, a detection module, a switching control module and a power control module. The rectifying circuit rectifies a voltage of an external power grid to acquire a pulse direct-current voltage. The filter circuit filters the pulse direct-current voltage generated by the rectifying circuit to acquire a smooth direct-current voltage with small pulse. The power charging module charges an energy storage element by using the direct-current voltage generated by the filter circuit. The detection module detects the power charging module to generate a detection signal. The switching control module receives the detection signal generated by the detection module to generate a switching control signal. The power control module receives the switching control signal generated by the switching control module and generates a power control signal, and carries out debugging control for the charging power of the energy storage element by using the power control signal to keep the charging power of the energy storage element stable.

The invention discloses a cold storage system and method for an LNG power container ship. The system comprises an LNG combustion system, an LNG heat exchange system and a cold storage system body. For the problems that the LNG power container ship is high in power, the LNG fuel consumption is large and a large amount of released cold energy cannot be utilized, the system stores excessive cold energy on the LNG power container ship in a cold storage box ice making manner, and the problem of excessive cold energy of the LNG power container ship is solved. Through the method, the cold energy of LNG fuel on the ship can be used for land requirements, so that the cold energy of an LNG can be fully utilized, and power consumption of refrigeration equipment of a user needing the cold energy on land is saved; and along with large-scale development of the container ship, the main motor power of the LNG power container ship is higher and higher, and the consumption of the LNG fuel is larger and larger, so that the released cold energy is more and more, and the cold storage system and method disclosed by the invention have relatively good application value.

The invention belongs to the technical field of chemical industry, and in particular relates to a process for solving the expansion of gas desulfurization liquid in the coking industry. The invention adopts gas blowing and desorption method to remove ammonia in concentrated ammonia water, and the gas after desorbing ammonia is sent to the desulfurization tower as an alkali source for desulfurization, while the remaining water is discharged from the bottom of the tower, thereby realizing the purpose of gas blowing ammonia. Compared with the technology in the prior art, the present invention firstly solves the problem of insufficient alkali source of desulfurization in technology one; secondly, solves the problem that the water balance of the spray saturator cannot be controlled and the ammonium sulfate mother liquor is excessive. The amount of water brought into the desulfurization system by the device of the present invention is less, and the desulfurization system is short of water, and the distilled condensed liquid produced by extracting salt from the desulfurization waste liquid can be fully reused in the desulfurization system, and no excess waste water will be generated for coal blending or coke quenching. Satisfactory results have been achieved.

The invention belongs to the technical field of returning straw to fields, and discloses a method for returning double straw to a field by abdomen-passing-through through a sheep. Maize straw and rice straw are formed into silage feed, which is high in nutrient and good in palatability, through a mixed ensiling technique; subsequently, the silage is formed into excrement through the digestion of the sheep; afterwards, the excrement is promoted to be thoroughly decomposed according to the ratio of the excrement to the rice straw, which is 6 to 4; organic fertilizer is formed and is returned to the field. By using the method, environmental pollution and waste problems which are brought when the maize straw and the rice straw in a hilly area are treated are solved; palatable feed for herbivorous livestock is produced; the problem that the feed for the sheep in the hilly area is short is solved; meanwhile, the organic fertilizer is formed by utilizing two kinds of straw and through an abdomen-passing-through technique and thorough decomposition; the production and the return to the field of the organic fertilizer are realized; the cyclic development of planting and breeding industries are prompted; the silage feed is formed by utilizing nutrient substances in the maize and rice straw; the problem that grass lacks for the herbivorous livestock in the hilly area is solved; the environmental pollution problem in processes of the incineration, the accumulation and the like of rural straw are also solved.

The invention relates to a method for producing milk wine. The method is characterized by comprising the following steps: carrying out primary fermentation on fresh milk; separating products after the primary fermentation to remove solid substances so as to obtain fresh whey; adding fermented whey, monosaccharide and fresh milk into the fresh whey for secondary fermentation; separating and removing the solid substances in products of secondary fermentation; carrying out primary distillation on the products of secondary fermentation after the solid substances are removed; homogenizing products of primary distillation; filtering the homogenized products; carrying out secondary distillation on the filtered products, wherein the time for the primary fermentation is 40-60 hours, and the time for the secondary fermentation is 85-105 hours. The method for producing milk wine provided by the invention is short in fermentation time, so that the production period of the milk wine is shortened, and the problem of excess milk source is effectively solved.

The invention relates to an arc welding machine. The above-mentioned arc welding machine is used for welding products, and the arc welding machine includes a frame, a turntable, a driving mechanism, a laser mechanism, an angle sensor and a heat conduction mechanism. The turntable is rotatably connected to the frame, and there is a storage slot for placing products on the turntable; the drive mechanism is set on the frame, and the drive mechanism drives the turntable to rotate relative to the frame; the laser mechanism is set on the frame, and the laser mechanism is used for The product is welded; the angle sensor is set on the turntable, and the angle sensor is used to measure the rotation angle of the turntable; when the rotation angle is equal to a predetermined value, the angle sensor generates the first induction signal to control the laser mechanism to stop generating the laser beam; the heat conduction mechanism includes a heat conduction matrix and multiple The heat-conducting substrate is arranged on the turntable; the above-mentioned arc welding machine avoids the problem that the product is easily warped and deformed during the welding process, so that the flatness of the product is better, and the problem that the product is easily scrapped is solved.

The invention provides a method for preparing chloropropylene oxide from biomass glycerol. The method comprises the following steps: first mixing biomass glycerol with organic acid, carrying out heating to 90-140 DEG C, maintaining the temperature, introducing hydrogen chloride gas into the obtained system and starting a bubbling reaction, wherein tail gas is absorbed with alkali liquor; cooling amaterial obtained in the previous step to room temperature, then transferring the material to another reactor, heating the material to 30-90 DEG C, and adding a KOH solution with a concentration of 6-10 mol/L for a reaction; and at the end of the reaction, removing solids through filtration so as to obtain a filtrate which is a chloropropylene oxide solution. The method of the invention has the advantages of simple process, easy availability of raw materials, low cost and good industrialization prospects.

The invention discloses a method for removing carbon deposition on a turbine blade of an aircraft engine through magnetic needle grinding. The method for removing the carbon deposition on the turbine blade of the aircraft engine through magnetic needle grinding comprises the steps that the turbine blade is soaked in a dissolved cleaning solution, so that the surface of the turbine blade is infiltrated; a magnetic needle is poured into the cleaning solution, the magnetic needle impacts the surface of the turbine blade under a rotating electromagnetic field and rotates forwards and reversely at intervals for cleaning, and the carbon deposition on the surface of the turbine blade is removed; and the turbine blade is taken out after cleaning is completed, the carbon deposition and the cleaning solution attached to the surface of the turbine blade are washed away through a high-pressure water gun, and then the turbine blade is dried. According to the method for removing the carbon deposition on the turbine blade of the aircraft engine through magnetic needle grinding, the carbon deposition of the turbine blade is removed under the condition that a strong oxidant and strong alkali are not used; an abrasive material adopted for magnetic needle grinding is slender, so that the abrasive material cannot enter the turbine blade through heat dissipation holes of the turbine blade; in addition, batch treatment of the turbine blades can be achieved, manual grinding is not needed, and therefore the cleaning efficiency of the carbon deposition of the turbine blades is greatly improved.

The invention discloses an isomerization process of butene in etherified liquefied petroleum gas. Materials at an outlet of an etherification device for producing MTBE (Methyl Tert-Butyl Ether) contain a large amount of n-butene, and skeletal isomerization is carried out on the materials rich in n-butene to produce isobutene so as to reach the purpose of increasing the isobutylene production. An isomerization reactor is a fixed bed reactor, a catalyst is a ZSM-5 molecular sieve with a molar ratio of SiO2/Al2O3 being 200-500, the specific surface is 300-500m<2>/g, and the average pore diameter is 2-8nm.

The invention relates to a balanced tie-in manufacturing method of negative and positive plates of the storage batteries. It replaces the positive plates with the slab lattices to produce the negative plates alone or replaces the negative plates with the slab lattices to produce the positive plates alone. When the positive plates are superfluous during producing the storage battery, replace the anode plates with the slab lattices, take the cathodes as the negative plates and produce the negative plates alone with between 4.33% and 7.13% of PbO in normal formation condition. When the negative plates are superfluous, replace the cathode plates with the slab lattices, take the anodes as the positive plates and produce the positive plates alone with between 77.68% and 85.21% of PbO2 in normal formation condition. By adopting the invention to produce the negative and positive plates, can get stable index, reliable technology, pay the cost of between 0.26RMB and 0.30RMB per monolithic for the profit of more than 1RMB pre monolithic and is a good method of balanced arrangement of the negative and positive plates of the storage batteries and increasing the benefit.

The invention provides a novel technological burner system. The novel technological burner system comprises a technological burner, wherein the technological burner comprises a middle oxygen channel,an outer ring oxygen channel and a coal water slurry channel located between the middle oxygen channel and the outer ring oxygen channel; a cooling water channel is arranged between the outer ring oxygen channel and the coal water slurry channel; the front end of the technological burner is further connected with a mixed atomizer; the mixed atomizer comprises a mixing chamber and a pre-mixing chamber; the mixing chamber consists of CO2 channels at two sides and the coal water slurry channel located between the CO2 channels; a separation plate between every two adjacent channels is Y-shaped; the pre-mixing chamber is located at the rear end of each channel and a discharge hole is formed in the rear end of the pre-mixing chamber; the discharge hole is communicated with a feeding opening of the technological burner. By adopting the technological burner, the contact specific surface area between CO2 and oxygen gas can be larger and gasification reaction is more rapid, so that the problem that the oxygen gas is excessive in a combustion region and local area is greatly solved.