227results about How to "Improve separation quality" patented technology

The invention relates to a processing flow of FT synthetic oil, which comprises hydrogenation, low-temperature oil washing, decarburization and PSA. The invention is characterized in that the synthetic oil is mixed with hydrogen via a filter, and enters a hydrogenated prerefining reactor after heat exchange, then enters a hydrogenated refining reactor after the synthetic oil is heated to 300 to 380 DEG C by a heating furnace; oxygen-containing compounds, unsaturated hydrocarbons and metal impurities in the raw material are extracted; the hydrogenated refined product enters a high thermal separator for separation of oil phase and gas phase after heat exchange, and enters a hydrocracking reactor for hydrocracking after heat exchange and heating of the heating furnace; the cracked product and the refined product are mixed to enter a fractionation system; a combined flow with two stages connected in series is adopted for the hydrogenated refining reactor and the hydrocracking reactor which share a recycle hydrogen system; a fractionation system is shared by the hydrogenated refined oil and the hydrocracked oil; and a three-column process flow is adopted for the fractionation system. The invention has the advantages of low gas consumption of the low-temperature oil washing process, high recovery of light hydrocarbons, less matching investment, and reduction of energy consumption and improvement of hydrogen recovery rate due to the decarburization process.

The invention is intended for sizing separation of difficult-to-screen powder materials and slurries. A sieve assembly includes a rigid frame, attached inside the separator housing, and upper and bottom sieves, stretched on the frame. The interface apparatuses are connected to the upper sieve, while actuator means—to the bottom sieve. The forced frequency of the vibrator is close to one of the natural frequencies of the bottom sieve. When the vibrator is operated, the actuator means interact with interface apparatuses, thus generating repeated collisions therebetween and mechanical impulses, which provide multifrequency excitation of the interface apparatuses and upper sieve. This ensures continuous self-cleaning of the upper sieve, intense loosening of the material bed and disintegration of the particle agglomerates. Separation capacity and products' quality substantially rises. In other embodiments presented sieve assembly includes buffer elements and inertial apparatuses, connected to the upper sieve.

This invention provides a method for separating and extracting high-purity stachyose product from Rehmannia glutinosa and Stachys sieboldii. This invention also provides a method for continuously separating and extracting stachyose and catalpol from Rehmannia glutinosa. The method comprises: separating and purifying the extract by passing through continuous pressure-filtration, microfiltration, ultrafine filtration and nanofiltration membranes, and active carbon column, macroporous adsorption resin column, cation exchange resin column, and anion exchange resin column chromatography to obtain stachyose and catalpol. The method has scuh advantages as increased product quality, low wnwegy consumption, and increased raw material utility.

Methods and systems are provided for controlling an automatic separator apparatus of a Materials Recovery Facility. An input stream of recycled materials is provided, wherein the composition of the input stream is subject to variation during a time interval. At least one characteristic of the input waste material stream is measured. An initial value is selected for an adjustable parameter of the automatic separator apparatus based upon the measured characteristic of the input stream.

The present invention relates to a distillation method of oxime. Tower bottom materials are usually heated by still distillation, a U-shaped outer tube or a rotary film evaporator, long-term operation of the tower bottom is easy to coking, and the distillation efficiency is low. The invention is characterized in that: in the distillation and separation section of oxime, at least one high boiling point solvent is added in the distillation process, the content of the high boiling point solvent in the tower bottom is maintained in proportional to that of oxime, and finally oxime is effectively separated by distillation. Oxime is fed into a rectifying tower, and is distilled at an absolute pressure of 0-0.4 MPa and at 20-300 DEG C to collect fractions. The unevaporated liquid left in the tower bottom is subjected to the processes of removing water and impurities, and is recycled to the rectifying tower as a high boiling point solvent. The present invention can reduce total production costs, simplify operation processes, prevent the product from coking in the tower bottom or decomposing due to overheating, ensure product distillation to be efficient, continuous, safe and stable, and improve product quality.

This invention describes a process for the recovery and recycle of industrial waste solids, especially the salt-alkali separation and recycle of the waste salt-alkali solids from the manufacturing of hydrated nitriles. This invention uses water, mother liquid and sodium bicarbonate to wash the waste salt-alkali solids from the manufacturing of hydrated nitriles, so that Na2CO3 and NaOH in the waste salt-alkali solids are washed into the solution. The washing solution is then cooled to 0-5deg.C, and filtrated and separated to obtain solid sodium carbonate decahydrate, which can be commercialized after washing. The mother liquid, after separating the solid alkali, is directed to the next process for washing the waste salt-alkali solids without discharge. During the circulatory washing of the waste salt-alkali solids, the table salt keeps in the solid state. After centrifugal separation, the table salt containing 3% of alkali can be obtained and used for sodium carbonate industry. The said table salt NaCl, after washing and separation to remove a small amount of hydrazine and amine, can be used for chlorine-alkali industry. Chlorine Cl2 and sodium hydroxide NaOH are raw materials for sodium hypochlorite NaClO, which is a raw material for producing hydrazine hydrate. In addition, sodium hydroxide is directly involved in the reaction for producing hydrazine hydrate N2H4íñH2O, thus constituting an internal recycling system of a manufacturing plant without discharging, which not only is environmentally friendly but also reduces transportation load and production cost. This invention describes a rational process for large-scale hydrazine hydrate manufacturing plants.

The invention discloses a pressure-control two-way self-cleaning slit-type sewage separation system. A filtering piece (25) and a base (22) are connected, a scraper (26) and an impeller (28) are connected, the filtering piece (25) and the scraper (26) are stacked in a spaced mode, a motor shaft (27) is connected with the impeller (28), a water outlet cylinder (21), a speed reduction motor (15) and the base (22) are connected, a one-way valve (18) is disposed in the water outlet cylinder (21), a spring (19) is disposed between the one-way valve (18) and the water outlet cylinder (21), a three-way electromagnetic valve (8) is connected with a water outlet of the water outlet cylinder (21) and an outlet of a water pump (7) through water pipes (9) respectively, a water inlet of the water pump (7) extends into separation water (3) through a water pipe (9), a position switch (16) is installed on the water outlet cylinder (21), and a pressure switch (40) is installed on a piston (4). The system is used for separating sewage in a sewage box of a sewer dredging vehicle, increasing sewage separation speed and improving sewage separation quality.

A mulberry twig bark and core separation and granulation combined machine comprises a bark and core separation device and a mulberry twig granulation device, wherein a transferring roller is arranged between the bark and core separation device and the mulberry twig granulation device. The mulberry twig bark and core separation and granulation combined machine is good in bark and core separation quality, the separation rate can reach 90%, separated mulberry barks are complete in shape, is small in damage to fibers and contains few impurities like wood chips, manufactured core rod aggregate particles are uniform in size, contain a little dust and a few large-particle materials, and can meet the process requirements on raw materials when mulberry extraction fibers and core rod aggregates are directly used for producing mulberry twig fiber boards, paper and fungus culture media, and the comprehensive utilization rate of the mulberry twigs is high. The mulberry twig bark and core separation and granulation combined machine is high in mechanical continuity degree, only the mulberry twigs are fed manually, product transportation, mulberry twig bark and core separation, mulberry bark collection, core rod granulation and collection and links between the work procedures are all automatically and continuously finished by equipment, a little work time is used, and production efficiency is high.

The embodiment of invention discloses an unloading method, an unloading device and an underlying bin type mixing station with the unloading device. The method and the device are applied to the underlying bin type mixing station. The method comprises the following steps: receiving an unloaded material from a stirring tank (1) by a material receiving hopper (2); and moving an unloading car (10) to a corresponding position for unloading according to the difference of unloaded materials, wherein the corresponding position comprises the upper part of a finished product material bin or the upper part of a waste material groove (7). The unloading method, the unloading device and the underlying bin type mixing station of the invention simply separate waste materials from finished product materials, decrease the complexity of the unloading device and improve the separation quality.

The invention discloses a method for leaching spodumene based on combination of a microwave and a pressure field, and belongs to the production technology field of lithium salt extracted from spodumene in chemical metallurgy. The method comprises the steps of (1) grinding ore; (2) transforming an out-field irradiation crystal form; (3) pressure leaching; and (4) separating and purifying. Accordingto the technical scheme, microwave irradiation is adopted on the spodumene, so that a crystal form transformation temperature range is expanded; and then a direct sulfuric acid leaching process is carried out on the irradiated spodumene, valuable metals such as lithium are leached into lithium sulfate under the conditions of heating and pressurizing, then the lithium sulfate is separated and purified, a solution is recovered, and a final product i.e. the lithium salt is obtained, so that an application range of a complicated spodumene raw material is further expanded. The technical scheme hasthe advantages of short flow, energy conservation, emission reduction, excellent current joining process and the like.

The invention provides a cable synchronous separating and tensioning device which comprises a rotary mechanism, a transverse moving mechanism, a cable fixing table and a fixed bottom plate. The transverse moving mechanism comprises a movable support, a movable slider, a lead screw and a first motor. The support is fixedly arranged on the fixed bottom plate. The movable slider is arranged on two guide slide rods on the movable support through two through holes in the movable slider in a sleeving mode. The lead screw is sleeved with one threaded hole in the movable slider. The first motor is fixed to one end of the support and connected with one end of the lead screw. The rotary mechanism is arranged on the movable slider. The cable fixing table is arranged on the fixed bottom plate and located at the front end of the rotary mechanism. Cable cores can be separated by means of the rotary mechanism and can be tensioned by means of the transverse moving mechanism in the cable core separating process, and therefore the separation efficiency is high and the separation quality is ensured when the cable synchronous separating and tensioning device is used for separation work of the cable cores.