13results about How to "Reasonable process" patented technology

The present invention relates to a method for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid, belongs to the technical field of waste liquid treatment / recovery process, and solves at least one of the problems that the existing treatment / recovery process will cause secondary pollution, high energy consumption, and inability to simultaneously recover alkaline earth metal chloride salts. The present invention provides a method for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid: the recovery method includes three process sections, which are flocculation precipitation process section, azeotropic distillation process section, and "distillation + evaporation crystallization" process section, and finally obtains pure high-concentration organic solvent and alkaline earth metal chloride salt crystals. The recovery method provided by the present invention can realize the efficient recovery of organic solvents and alkaline earth metal chloride salts in aramid production waste liquid. Taking the DMAC-CaCl2 waste liquid system as an example, the recovery rate of DMAC can reach 98.3%, the recovery rate of CaCl2 can reach 94.5%, and the purity of DMAC is ≧99.99%.

The invention discloses a four-paddle forced self-propulsion test and self-propulsion factor analysis method for a conventional drainage type ship, and the method comprises the steps: firstly carrying out the four-paddle forced self-propulsion test for the conventional drainage type ship, and then carrying out the four-paddle forced self-propulsion factor analysis. A four-paddle forced self-propulsion test, a double-paddle forced self-propulsion test, a double-inner-paddle forced self-propulsion test and paddle unloading idling are carried out in a conventional drainage type ship four-paddle forced self-propulsion test. And then four-propeller forced self-propulsion factor analysis is carried out on the test. The four-paddle forced self-propulsion test method is reasonable in process, and necessary test data can be provided for subsequent self-propulsion factor analysis.

The invention relates to the technical field of battery disassembly and recovery, and provides a continuous high-efficiency energy-saving power battery crushing and recovery integrated process, integrated equipment is adopted, and the integrated equipment sequentially comprises a nitrogen generation module, a crushing module, a drying module, an integrated cooling module and a tail gas treatment module, and the energy consumption is further reduced while the safety is ensured.

The invention relates to the field of stamping processing, in particular to a stamping system for a straw discharge port guide baffle, which is characterized in that a first punching die, a second punching die, a third punching die, a first trimming die, a second trimming die, a forming die, a bending die, a side shaping die and a separating die are sequentially arranged on an upper die assembly according to a stamping process, so that the process is more reasonable, and the stamping efficiency is improved. The working procedures are well joined, so that unnecessary waiting is avoided; the positioning hole, the guide pin and the guide hole are arranged to guide the material belt, so that precise positioning of stamping in the subsequent process is guaranteed, product scrapping caused by deviation of the material belt in the stamping process is reduced, waste is reduced, and the material cost is reduced. The control module is arranged to complete the stamping control process of the straw outlet material guide baffle, and the quality problem of the straw outlet material guide baffle is reduced. The problems of unreasonable process design, low material utilization rate, poor quality of stamped parts and low precision of a stamping system for the material guide baffle of the straw discharge port are solved.

The application provides a surfacing electrode produced by a screw machine and a preparation method thereof, the electrode comprising an electrode core and a coating covering the surface of the electrode core, the weight of the coating being 48-52% of the weight of the electrode core; the coating comprises the following components in percentage by weight: marble 5.0%-8.0%, reduced ilmenite 20.0%-24.0%, rutile 8.0%-12.0%, white clay 3.0%-8.0%, mica 5.0%-8.0%, wood powder 2.0%-4.0%, starch 2.0%-3.0%, medium-carbon ferromanganese 8.0%-10.0%, high-carbon ferrochrome 20.0%-22.0%, ferromolybdenum 5.0%-9.0%, and green clay phyllite 7.0%-12.0%. The electrode is used for single-layer or multi-layer surfacing of various worn machine surfaces, has good Rockwell hardness, and can be used in alternating current and direct current.

The invention relates to a through-type sand shooting and coating device for a plurality of large iron molds with different cavities and a molding production method of the through-type sand shooting and coating device, and belongs to the field of machinery. The device comprises a sand shooting and coating mechanism, a moving trolley in-out track and a plurality of moving trolleys, and the moving trolleys are all arranged on the moving trolley in-out track. The sand shooting and coating mechanism comprises a frame structure, a sand shooting head, a track platform, four telescopic sand adding pipes, two sand shooting head lifting and clamping hydraulic cylinders, two sand shooting clamping bosses and four track platform lifting hydraulic cylinders; the bottom of each telescopic sand adding pipe is connected with the sand shooting head below the telescopic sand adding pipe; two sand shooting head lifting and clamping hydraulic cylinders are arranged on the upper beam, two sand shooting clamping bosses and four rail platform lifting hydraulic cylinders are arranged on the base, and the four rail platform lifting hydraulic cylinders are uniformly distributed below the rail platform. The device is reasonable in structural design, safe, reliable, low in labor intensity, low in cost, good in large iron mold sand-lined casting mold quality, high in mechanization degree and convenient to install, and meets the use requirements.

This invention discloses a product separation and purification apparatus and method for the production of dimethyl carbonate (DMC) via CO esterification. It includes a pre-separation tower, a DMC separation tower, a wastewater DMC recovery tower, a circulating gas separation tower, a DMM removal tower, an MF distillation tower, a DMM distillation tower, a pressurized DMC distillation tower, and an atmospheric pressure DMC distillation tower. The feed line for the DMC synthesis product is connected to the inlet of the pre-separation tower; the bottom outlet of the pre-separation tower is connected to the inlet of the wastewater DMC recovery tower; the side outlet of the pre-separation tower is connected to the inlet of the DMC separation tower; the top outlets of the pre-separation tower and the top outlet of the DMC separation tower are respectively connected to the inlet of the circulating gas separation tower; the bottom of the circulating gas separation tower is connected to the DMM removal inlet; and the bottom of the DMM removal tower is connected to the feed inlet of the pressurized DMC distillation tower. This invention can be used for the separation and purification of dimethyl carbonate (DMC) product streams, and features a rational process and low energy consumption.

The utility model relates to the technical field of polyolefin catalyst production, in particular to a mother liquor metering device for polyolefin catalyst production. The technical problems that the production efficiency is low, the production time is long and the feeding production of a plurality of synthesis kettles cannot be met due to the fact that the conventional production equipment is low in production efficiency, long in production time and incapable of meeting the requirement of feeding production of a plurality of synthesis kettles because all mother liquor needs to be transferred and raw materials need to be added again after the mother liquor is prepared due to the fact that a dissolving kettle is not provided with a metering instrument are solved. According to the technical scheme, the mother liquor metering device for polyolefin catalyst production comprises a configuration assembly and a metering assembly; after the mother liquor metering tank is mounted, the connecting valve is controlled to receive mother liquor from the inside of the dissolving kettle from the mother liquor transfer pipe, the mother liquor can be transferred to the synthesis kettle at any time for reaction production, and the dissolving kettle can be used for preparing new mother liquor again, so that multi-batch circulating work is realized, the working efficiency is improved, and multi-batch raw materials can be fed by utilizing the dissolving kettle; after being quantitatively transferred to a mother liquor metering tank, the mother liquor is transferred to a synthesis kettle, so that the synthesis efficiency is improved.

The invention discloses a preparation process of vegetable insulating oil with high oxidation stability, and belongs to the technical field of vegetable oil refining. The core of the process is as follows: firstly, taking palladium and nickel salts in a specific molar ratio as precursors, and combining with polyethylene glycol to prepare a palladium-nickel bimetallic catalyst loaded on alkaline carclazyte; then, vegetable oil is mixed with the catalyst and activated carbon, and hydrogen is introduced under mild vacuum and heating conditions for selective hydrogenation refining; and finally, adding an antioxidant and a pour point depressant into the refined oil to obtain a final product. Through the synergistic effect of the catalyst, extremely unstable linolenic acid in hydrogenated oil can be efficiently and selectively hydrogenated, by means of an integrated process and blending, the oxidation stability is remarkably improved, meanwhile, the excellent low-temperature fluidity of the product is kept, the refining yield is high, the process is simple and convenient, and the method is suitable for large-scale production of the environment-friendly high-performance vegetable insulating oil.

The utility model relates to a local heating device for an annealing chamber battery piece, and belongs to the technical field of atomic layer deposition equipment. The device comprises a positioning and conveying assembly, a battery piece carrying plate assembly is arranged above the positioning and conveying assembly, a heating lamp tube is arranged above the battery piece carrying plate assembly, a heat insulation lifting assembly is additionally arranged between the heating lamp tube and the battery piece carrying plate assembly, and the battery piece carrying plate assembly is conveyed to a battery piece annealing area through the positioning and conveying assembly; the heat insulation lifting assembly structurally comprises a lifter, and a heat insulation plate is fixed to the output end, moving in the vertical direction, of the lifter. The heat insulation plate is of a plate-shaped structure in which a plurality of avoiding grooves are arranged in an array; and the notch of each avoiding groove is correspondingly matched with the notch of the battery piece of the annealing chamber under the notch. According to the utility model, annealing treatment can be only carried out on a cell slice notch, and the cell conversion efficiency and the photovoltaic performance are effectively improved.

This invention relates to the field of 1-butene production technology, specifically to a method and apparatus for the double bond isomerization of 1-butene. The method includes: 1) subjecting a mixed C4 stream to an isomerization reaction to obtain an isomerization reaction product containing 1-butene; 2) separating the isomerization reaction product obtained in step 1) by distillation to obtain a stream comprising a 1-butene product stream and a butadiene-containing liquid stream; 3) selectively hydrogenating the butadiene-containing liquid stream obtained in step 2) in the presence of hydrogen to obtain a selectively hydrogenated reaction product; and 4) recycling the selectively hydrogenated reaction product obtained in step 3) back to step 2) for distillation separation. The method of this invention, which involves selectively hydrogenating the butadiene-containing liquid stream obtained from the distillation separation of the isomerization reaction product, followed by recycling the selectively hydrogenated product back to distillation separation, has a more rational overall process, lower energy and reagent consumption, and ensures stable and controllable product quality.

This invention relates to the field of metallurgical technology, specifically to a method for effectively recovering metallic silicon from industrial silicon slag. The method involves first crushing the silicon slag, adding plasma water for slurry preparation, obtaining a silicon slag slurry, then adding a modifier, inhibitor, trapping agent, and frother to generate bubbles. The slurry is then refined using electromagnetic slag-forming in a medium-frequency induction furnace, and finally poured into a mold for cooling to obtain metallic silicon. The modifier is quicklime powder, the inhibitor and trapping agent are a mixture of various components, the frother is No. 4 flotation oil, the slag-forming agent is a mixture of base materials and auxiliary materials, and the gas is a mixture of argon, chlorine, and other gases. This method can solve the problems of high impurity and complex chemical composition in industrial silicon slag, improving the purity of the recovered metallic silicon.

The present invention relates to a device for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid, belonging to the technical field of waste liquid treatment devices. The above-mentioned device is used in conjunction with a special method to solve at least one of the problems that the existing treatment / recovery process will cause secondary pollution, high energy consumption, and inability to simultaneously recover alkaline earth metal chloride salts. The present invention discloses a device for recovering organic solvents and alkaline earth metal chloride salts in aramid production waste liquid, and the device includes a flocculation precipitation section, an azeotropic distillation section, and a distillation + evaporation crystallization section. The above-mentioned device is used in conjunction with a special method to achieve efficient recovery of organic solvents and alkaline earth metal chloride salts in aramid production waste liquid, with low energy consumption and environmental friendliness; taking the DMAC-CaCl2 waste liquid system as an example, the recovery rate of DMAC can reach 98.3%, the recovery rate of CaCl2 can reach 94.5%, and the purity of DMAC is ≧99.99%.