36results about How to "Good extraction and separation ability" patented technology

The invention discloses a centrifugal extractor which comprises a motor, a flow deflector assembly, a rotary drum and a housing, wherein the flow deflector assembly comprises a flow deflector that is a centrosymmetric structural body, a baffle is arranged in the flow deflector and divides the flow deflector into an inlet chamber and an outlet chamber, a plurality of light-phase flow deflection holes distributed in a central symmetry manner through taking a rotation axis of the flow deflector as the center are formed in the baffle, inlet ends of the light phase flow deflection holes are communicated with the neighborhood of the center of the inlet chamber, outlet ends of the light phase flow deflection holes penetrates from the flow deflector and are communicated with a light phase outlet, a plurality of first heavy phase flow deflection holes communicated with the inlet chamber and the outlet chamber are formed in the baffle, and the first heavy phase flow deflection holes are distributed in a central symmetry manner through taking the rotation axis of the flow deflector as the center. The centrifugal extractor has a reasonable structural design, is convenient to process accurately by means of overall dynamic balance, and is good in dynamic balance; the flow deflector is less in vibration during the high-speed operation process, the two-phase separation interface is stably controlled, the extraction and separation effect is good, and meanwhile, the centrifugal extractor is also applicable to high-speed extraction and separation of materials difficult to separate.

The present invention relates to the use and method of the amino acid-containing phosphine extractant of the following general formula I for the extraction and separation of cobalt and nickel, wherein R 1 from C 1 ~C 12 Alkyl, R 2 from C 1 ~C 14 alkyl. The method comprises the step of using the amino acid-containing phosphine extractant of the general formula I to extract and separate nickel from a feed solution containing cobalt and nickel. The method of the present invention can preferentially extract nickel, so as to realize the separation of nickel and cobalt, so it has significant advantages in separating low-nickel and high-cobalt feed liquid. In addition, the amino acid-containing phosphine extractant used in the present invention can not only separate cobalt and nickel in different acid media, but also has good extraction and separation capabilities, and the synthesis method is simple, the cost is low, the property is stable, and it is easy to realize industrialization. It has high industrial application value.

The invention discloses a fresh pericarpium zanthoxyli oleoresin separation and purification process which comprises the following steps: after harvesting fresh pericarpium zanthoxyli, carrying out cold pressing within two hours to obtain fresh pericarpium zanthoxyli oleoresin, carrying out countercurrent extraction separation on the fresh pericarpium zanthoxyli oleoresin through a liquid substance extraction and separation unit of a supercritical CO2 fluid dynamic countercurrent extraction and separation system, and after the countercurrent extraction separation is completed, obtaining fresh pericarpium zanthoxyli resin from the extraction unit, and obtaining fresh pericarpium zanthoxyli essential oil through a separation unit. The extraction separation process is as follows: the feeding rate is 40kg / h, the CO2 flow rate is 600L / h, the extraction temperature is 45 DEG C, and the extraction pressure is 20MPa; the separation I temperature is 40 DEG C, the separation I pressure is 7.5 MPa, the separation II temperature is 55 DEG C, and the separation II pressure is 4-6 MPa; the total yield of the oleoresin product reaches 98.74%-99.17%, and the separation efficiency of volatile oil reaches 94.00%-99.24%; the volatile oil content of the obtained essential oil can reach 101.94-128.93 ml / 100g; the content of amide substances in the obtained resin can reach 575.22 mg / g to 645.99 mg / g, and the content of the amide substances is increased to 79.08% to 98.25%. According to the process disclosed by the invention, the fresh pericarpium zanthoxyli essential oil with high volatile oil content and the fresh pericarpium zanthoxyli resin with a high amide substance content can be obtained, and the purification effect of the two products is remarkable.

The invention discloses a method of separating lanthanum from rare earth nitrate slurry as well as a rare earth ore concentrate separation method. The rare earth nitrate slurry does not contain cerium and thorium. The method comprises the following steps: (1) preparing P503 alkane liquor with volume ratio of 30-50% as an extracting agent, and adjusting the pH of the slurry to 2-3; (2) by using sodium nitrate or lithium nitrate liquor as washing liquor, extracting to obtain lanthanum-containing raffinate and a praseodymium- and neodymium-containing organic phase; (3) carrying out countercurrent reverse extraction with sulfuric acid or / and nitric acid as a reverse extraction liquid to obtain a praseodymium and neodymium containing reverse extraction liquid; and (4) adding a rare earth precipitator into the lanthanum-containing raffinate, and roasting the precipitate to obtain lanthanum oxide. Meanwhile, the invention further discloses an extraction and separation method of rare earths in rare earth ore concentrates. One neutral extracting agent is used for extraction and separation of the rare earth ore concentrates, so that the economic pressure of production is relatively low without a transformation step of fully fishing and fully reversing. The neutral extracting agent is used, so that saponification is avoided, and thus the problem that discharge of ammonia-nitrogen wastewater does not reach the standard is eliminated from the source.

The invention discloses a cylinder type centrifugal extractor. The centrifugal extractor comprises a motor, a transmission system, a rotating shaft, an auxiliary support, a mixing chamber, a light-phase outlet, a light-phase inlet, a heavy-phase outlet, a heavy-phase inlet, a sandwich layer, an annular impeller, a feeding impeller, a rack, a light-phase weir plate, a heavy-phase weir plate, a light-phase collecting chamber and a heavy-phase collecting chamber, wherein one end of the transmission system is connected with the motor, and the other end of the transmission system is connected with the top of the rotating shaft of a rotor drum; the bottom of the rotating shaft of the rotor drum is provided with the auxiliary support; the bottom of the rotor drum is provided with a baffle plate; the feeding impeller is arranged under the central position of the bottom of the rotor drum; the mixing chamber is arranged below the rotor drum; both the periphery and the bottom of the mixing chamber are provided with mixing baffle plates; the heavy-phase inlet and the light-phase inlet are respectively formed in the two ends of the bottom of the mixing chamber; the exterior of the rotor drum is provided with the sandwich layer, the light-phase collecting chamber and the heavy-phase collecting chamber from the inside out. The cylinder type centrifugal extractor has the advantages that entrainment is reduced, the extraction flux is increased, an extraction separation effect is good, the production efficiency is high, and the like.

The invention discloses a dephenolization treatment method for coking residual ammonia wastewater. Fixed ammonium surplus ammonia water and free ammonia surplus ammonia water are respectively obtained after a raw coke oven gas is processed, wherein the fixed ammonium surplus ammonia water enters a fixed ammonium dephenolization treatment unit for post-treatment, which comprises three procedures, namely oil-water separation, oil removal in a sedimentation manner, and fixed ammonium decomposition; the free ammonia surplus ammonia water enters a free ammonia dephenolization treatment unit for post-treatment, which comprises five procedures, namely oil removal in a sedimentation manner, extraction and oil removal, steam stripping and dephenolization, distillation and dephenolization, and extraction and dephenolization. By adopting the dephenolization treatment method, the sewage output is effectively reduced, the biochemical treatment pressure is reduced, meanwhile, phenol in the residual ammonia water is effectively recovered, the heat of each procedure is reasonably utilized, the energy cost is effectively reduced, and the chemical oxygen demand (COD) value of the processed wastewater is very low, so as to lay a foundation for simplifying treatment of biochemical wastewater.

A use of an amino group-containing neutral phosphine extraction agent having the following formula I for the extraction and separation of tetravalent cerium, and a method using the amino group-containing neutral phosphine extraction agent having formula I to extract and separate tetravalent cerium. R1 and R2 are each independently selected from C1-C12 alkyl groups, R3 and R4 are each independently selected from C1-16 alkyl groups and hydrogen, and n is an integer from 1 to 8.

The present invention relates to the use and method of an amino-containing neutral phosphine extractant of the following general formula I for extracting and separating Ce(IV) or Th(IV): wherein, R1 and R2 are each independently selected from C1~C12 alkyl groups; R3 and R4 are each independently selected from C1-C5 alkyl and hydrogen, and at most one of R3 and R4 is hydrogen; R5 and R6 are each independently selected from C1-C16 alkyl and hydrogen, and at most one of R5 and R6 is hydrogen.

The present invention relates to the use and method of an amino-containing neutral phosphine extractant of the following general formula I for extracting and separating uranium, wherein R1 and R2 are each independently selected from C1-12 alkyl groups; R3 and R4 are each independently selected from C1 -5 alkyl and hydrogen, R5 and R6 are each independently selected from C1-16 alkyl and hydrogen, and at most one of R5 and R6 is hydrogen. The amino-containing neutral phosphine extractant used in the present invention not only has a good extraction and separation ability for uranium in different acid media, but also has a simple synthesis method, and the chemical raw materials used in the synthesis are simple and easy to obtain, and the cost is low, so that the uranium can be effectively reduced. The cost of extraction and separation has high industrial application value. According to the method of the present invention, liquid-liquid extraction separation or solid-liquid extraction is used to separate uranium in uranium-containing raw materials. The results show that the purity of uranium obtained after extraction, washing and stripping is more than 99%, and the yield of uranium is More than 98%, effectively realizing the enrichment and purification of uranium.

The invention discloses a method for extracting cordyceps polysaccharide and adenosine from cordyceps sinensis mycelium. The method comprises the steps of (1) preparing cordyceps sinensis mycelium or extracting solution of the cordyceps sinensis mycelium into mixed liquid of the mycelium by adding water, wherein the content scope of the mycelium is 1-700 g / L; (2) adding 10-700 g of soluble inorganic salt and 10-600 g of alcohol or ketone hydrophilic organic matter into per liter of mixed liquid, prepared in the step (1), of the mycelium, and carrying out standing and phase splitting on obtained multiphase mixed liquid, wherein the upper phase is a solvent phase rich in the adenosine, and the lower phase is a salt-rich phase rich in polysaccharide; and (3) separating and obtaining the adenosine from the upper phase, and separating and obtaining the cordyceps polysaccharide from the lower phase. According to the method, a lot of defects in the conventional process for separating the polysaccharide and the adenosine from the cordyceps sinensis mycelium are overcome, the process is simplified, the separation time is short, the cost is lowered, and the method is economic and feasible.

The invention relates to an extraction method of platinum in a high-concentration platinum solution. The method comprises the following steps of 1) diluting a high-concentration platinum waste dissolving solution with a hydrochloric acid solution with the concentration being 4mol / L; and 2) preparing the platinum solution on which the first-grade extraction is performed by an extraction agent in a dilution manner by taking normal octane as a diluent and N-normal-butyl valnoctamide as a solute and discharging a raffinate so as to obtain an extract containing the platinum. By utilizing the method, the concentration of the platinum in the material solution can be improved to 20g / L; the first-grade extraction rate E is greater than or equal to 99.5%; the technological process is reduced; and the treatment time is shortened. Thus, the method is efficient.

The invention relates to the technical field of precious metal separation and purification, in particular to a platinum separation and purification process, including base metal de-doping treatment, extraction treatment, stripping treatment and reduction treatment. Utilizing the separation and purification method in the present invention greatly improves the extraction efficiency of platinum and also improves the purity of platinum.