Please select the most similar patent number from A, B, C and D. Which number is?
A method for treating an oily aqueous substance, comprising: mixing a first oily aqueous substance (101, 102) with a solvent (103, 203) at a first temperature to obtain a first mixture (105, 205) containing a solid substance (107, 207) and a liquid substance (111, 211), the liquid substance containing the solvent (103, 203), oil, and water; subjecting the first mixture (105, 205) to a first separation treatment to obtain the solid substance (107, 207) and the liquid substance (111, 211); subjecting, at a second temperature, the liquid substance (111, 211) resulting from the first separation treatment to a second separation treatment to obtain an aqueous phase (113, 213) and an organic phase (117, 217), the organic phase (117, 217) containing the solvent (103, 203) and the oil; and subjecting the organic phase (117, 217) to a third separation treatment to obtain the separated solvent (123, 223) and the separated oil (119, 219), wherein the mutual solubility of the solvent (103, 203) and water at the first temperature is higher than the mutual solubility of the solvent (103, 203) and water at the second temperature. Further disclosed is a corresponding treatment device. In the method for treating an oily aqueous substance, the separation and recovery of water are not subjected to phase transformation, but instead the water is obtained by liquid-liquid separation, thereby enabling an effective reduction in energy consumption.
A: A plasma-based carbon fixation system, comprising: a plasma reactor (11), a first separator (15), a condenser (14), and a second separator (17). The plasma reactor (11) comprises a first channel, a second channel, a high-voltage electrode (12), and a ground electrode (13); the first channel and the second channel are each provided with a corresponding flow controller (10); the condenser (14) is connected to an output of the plasma reactor (11), and a condensed liquid substance is introduced into the first separator (15), and a non-condensed gas substance is introduced into the second separator (17). A plasma-based carbon fixation method comprises the following steps: S100. taking carbon dioxide as a first reactant, and taking hydrogen or methane or water as a second reactant, and under the control of plasma and under the control of the amount of reaction of the first reactant and the second reactant, reacting the first reactant with the second reactant to obtain a conversion product, and outputting and condensing the conversion product, and the first reactant and/or the second reactant that may not be completely reacted to achieve gas-liquid separation; S200. carrying out first separation on the condensed liquid substance; S300. carrying out second separation on the non-condensed gas substance.
B: The present invention provides a method and apparatus for drying a biological solid material employing both microwave irradiation and solvent extraction. The method comprises microwave irradiation pretreatment, solvent extraction drying, solid-liquid separation, and solvent recovery. Through microwave irradiation of an aqueous biological solid material, gaps in the solid material are increased, and the biological material is fractured, thus releasing more bound water in the solid material. Subsequently, the microwave-irradiated biological solid material is brought into full contact with an organic solvent, allowing the solvent to absorb and extract moisture from the solid, thus removing moisture from the solid. The aqueous solvent is then subjected to evaporation under reduced pressure or gasification under reduced pressure in a separation apparatus so as to separate the moisture and the solvent. The solvent is then compressed, condensed and recovered for recycling. Also provided is a device for implementing the drying method.
C: A salt extraction method for high-salinity waste water, which comprises: mixing high-salinity waste water and an organic solvent such that an inorganic salt which does not dissolve in an organic solvent is precipitated from the high-salinity waste water to form a solid-liquid mixture; performing solid-liquid separation on the solid-liquid mixture to obtain solid-phase inorganic salt and low-salinity waste water. The solid-liquid inorganic salt separated by using the present method is fluffy and does not harden and will not cause sewage blockage. Further disclosed is a salt extraction apparatus for high-salinity waste water.
D: The high-efficiency pretreatment separation of hemicellulose from a fiber-based biomass raw material and a comprehensive utilization method therefor. Using a fiber-based biomass raw material which is a type of forest biomass resource as a raw material, the fiber-based biomass raw material is first subjected to a slurry method pretreatment: the fiber-based biomass raw material is ground by a ball mill and sieved to obtain fiber-based biomass raw material powder of a certain mesh, and the powder is mixed with water at a room temperature according to a ratio to obtain a fiber-based biomass raw material powder slurry premixed liquid; by means of the regulation and control of the reaction temperature, time and water quantity, hemicellulose is hydrothermally and highly efficiently removed from the fiber-based biomass raw material powder in a slurry fiber-based biomass raw material powder premixed liquid system; once the mixed liquid is filtered, the filtrate is subjected to gradient precipitation to separate low-dispersion hemicellulose, the precipitate is dried, and the dried material is stored; once filter residue, a polar aprotic solvent and water are mixed, the mixture is heated and stirred in a pressurized reaction kettle for a certain period of time, and undergoes filtering separation to obtain high-purity cellulose, which is washed using water, dried and stored; the filtrate and water are mixed, the mixture is allowed to stand, the precipitated powder is filtered, drying is performed, and the dried material is stored; and the filtrate is subjected to reduced-pressure distillation to recover water, the solvent and a small amount of small-molecular chemicals, and recycling is performed.
Answer: B