829results about "Adsorption purification/separation" patented technology

A method for upgrading biogas wherein biogas is provided in one or more pressurized vessels. A plurality of pressurized feeds are produced in a process comprising decompressing biogas from at least one of the one or more vessels and as the biogas is decompressed providing portions of the biogas at successively lower pressures. The plurality of pressurized feeds, which have different average pressures, are provided to a pressure swing adsorption process wherein an adsorbent bed is pressurized by successively feeding gas from each of the pressurized feeds in the plurality into the adsorbent bed in order of increasing average pressure. Accordingly, compression costs can be reduced.

The present invention provides a zirconium-based metal-organic framework material and a preparation method therefor and the use thereof, and an adsorption separation device and method. The zirconium-based metal-organic framework material has a chemical structural formula of [C18H6O16Zr3]n, and comprises zirconium and an organic ligand forming a coordination bond with zirconium, wherein the organic ligand is diphenylethyne-3,3′,5,5′-tetracarboxylic acid. The molecular structure of the zirconium-based metal-organic framework material of the present invention is a three-position network structure having a one-dimensional channel; and in the present invention, the size of the one-dimensional channel is accurately controlled by changing the aspect ratio of the organic ligand, such that the zirconium-based metal-organic framework material efficiently separates a hexane isomer by means of a kinetic effect.

The invention relates to a preparation method of a normal-temperature normal-pressure efficient gas adsorption composite material. The method comprises the following steps: firstly, pretreating activated carbon to obtain surface-OH modified mesoporous activated carbon; then modifying the surface-OH modified mesoporous activated carbon with the ZIF-8 material to obtain ZIF-8 (at) OH-AC; and finally, performing surface hydrophobization modification to obtain the adsorption material. Wherein in the modification process, ZIF-8 is firmly loaded and uniformly distributed on the surface of hydroxyl-modified mesoporous activated carbon by adopting an in-situ growth technology, the interface bonding force is enhanced, the loading capacity of the activated carbon on the MOFs material is improved, and by utilizing the chemical adsorption effect of ZIF-8 Zn < 2 + > and methane and the high porosity of the mesoporous activated carbon, the MOFs material can be prepared. The adsorption capacity of the composite material to methane is greatly improved, meanwhile, the moisture resistance of the composite material is effectively improved, the composite material can still keep stable and efficient adsorption performance in a high-humidity environment, and the problem that an existing material is prone to inactivation in a humid environment is solved.

The invention relates to the field of chemical engineering, in particular to an n-hexane separation technology, and more particularly relates to a method and a device for preparing electronic-grade n-hexane. The method for preparing the electron n-hexane comprises the following steps: S1, introducing an adsorbent into an n-hexane raw material to remove moisture in the n-hexane, and then carrying out catalytic hydrogenation reaction to obtain crude n-hexane; and S2, carrying out primary filtration on the material subjected to catalytic hydrogenation, then carrying out light component removal and heavy component removal two-stage rectification to obtain high-purity n-hexane, and carrying out secondary filtration on the high-purity n-hexane to obtain the electronic-grade n-hexane. The device for preparing the electronic-grade n-hexane comprises a raw material tank, an adsorption tower, a catalytic hydrogenation reactor, an intermediate tank, a light component removal tower, a heavy component removal tower and a product tank which are connected in sequence. According to the preparation method and device, high-purity electronic-grade n-hexane meeting the strict requirements of the semiconductor industry can be produced, the process steps are simple, industrial production is easy to achieve, the product quality is stable and reliable, and high economic and social benefits are achieved.

The present invention relates to a method for preparing a attapulgite / molecular sieve composite adsorbent, comprising the following steps: (1) using NaX molecular sieve powder as a raw material, adding purified attapulgite, grinding, adding an aluminum source for crystallization, filtering, washing to a pH of 7 to 8, and drying to obtain a attapulgite / molecular sieve composite adsorbent precursor; (2) exchanging the composite adsorbent precursor obtained in step (1) with metal cations, and then filtering, washing, drying, molding, and activating to obtain the composite adsorbent. The composite adsorbent has a simple preparation method, a large adsorption capacity, and good selectivity. It can effectively adsorb and separate liquid mixtures, and has broad application prospects in selectively adsorbing and separating p-xylene from C8 aromatic isomers. The present invention also relates to a attapulgite / molecular sieve composite adsorbent and its application in adsorbing and separating p-xylene in mixed xylene.

The invention discloses an intelligent purification method and device for ventilation air methane, and particularly relates to the technical field of methane purification. Key parameters and key output indexes of an adsorption tower in the adsorption process are obtained, and the key parameters of the adsorption tower are adjusted according to the key parameters and adjustment key parameters; after the adsorption tower is adjusted according to the key parameters, the air inlet flow and temperature of the adsorption tower are adjusted according to a preset pressure curve; the saturation state of the adsorbent is judged according to the concentration of methane in the outlet gas of the adsorption tower, the change of the internal pressure and temperature of the adsorption tower and the adsorption time, and the working condition of the adsorption tower is switched into the desorption working condition according to the saturation state of the adsorbent, so that the working condition can be adjusted and controlled in real time according to the actual ventilation air methane purification state; the concentration of methane adsorbed by the adsorption tower is high, the energy consumption is low, and the desorption time is short.

The invention provides an SSZ-13 molecular sieve as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing activated silica-alumina minerals, SSZ-13 seed crystals, a silicon source, a template agent and a second alkali source to obtain dry glue, and then carrying out crystallization treatment on the dry glue in the presence of water vapor to obtain the SSZ-13 molecular sieve. According to the preparation method, a solvent is not adopted, a small amount of deionized water is used for providing a steam phase, the utilization rate of the raw materials can be increased, the high solid yield is obtained, the loss of a solid phase is reduced, no alkaline wastewater is generated, and the synthesis cost of the SSZ-13 molecular sieve is remarkably reduced. When the SSZ-13 molecular sieve prepared by the method is used for CO2 / CH4 adsorption separation, the SSZ-13 molecular sieve has relatively high separation selectivity.

The invention provides a system and a method for directly preparing olefin from synthesis gas. A reaction subsystem and a plurality of separation subsystems; according to the invention, synthesis gas is converted into product gas olefin by virtue of a reaction subsystem, and then mixed gas containing the product gas is cooled by virtue of a first separation subsystem, so that C5-C10 hydrocarbons, part of C3-C4 hydrocarbons and most of water vapor are liquefied and separated; after being dried by the second separation subsystem, the residual mixed gas enters a third separation subsystem to be subjected to pressure swing adsorption, so that an adsorbent adsorbs hydrocarbon with the diameter larger than 0.4 nm, and olefin in the product gas is completely separated; the residual mixed gas is continuously introduced into a fourth separation subsystem for pressure swing adsorption, so that the adsorbent adsorbs gas with the diameter smaller than 0.4 nm, and H2 is finally remained; further, the liquefied product collected in the first separation subsystem is shunted to a fifth separation subsystem and heated, so that the C3-C10 hydrocarbons are separated from H2O, and the collection of the C3-C10 hydrocarbons is completed; and the loss of olefin during olefin separation of the olefin product prepared from the synthesis gas is effectively reduced.

The invention relates to the technical field of three-dimensional porous framework crystal materials, in particular to a Zn-MOF microporous crystal material, a preparation method thereof and application of the Zn-MOF microporous crystal material in gas separation. The molecular formula of the Zn-MOF microporous crystal material is [Zn2 (PMA) (TPB)]. XH2O, PMA is deprotonated 1, 2, 4, 5-pyromellitic acid, TPB is 1, 2, 4, 5-(4-pyridyl) benzene, the Zn-MOF microporous crystal material is formed by coordination of Zn, an oxygen atom of the 1, 2, 4, 5-pyromellitic acid and an N atom of the 1, 2, 4, 5-(4-pyridyl) benzene, and the Zn-MOF microporous crystal material has a three-dimensional frame structure. The Zn-MOF microporous crystal material can be applied to the field of ethylene separation and purification.

The invention belongs to the technical field of organic framework materials, and particularly relates to a pyrazinyl monomer and a preparation method and application of a covalent organic framework material of the pyrazinyl monomer. Three nitrogen-rich methyl monomers containing pyrazine groups are designed and synthesized, the monomers and aromatic dialdehyde can be subjected to a condensation reaction to form a series of vinyl covalent organic frameworks (COFs), and the prepared three nitrogen-rich vinyl COFs can be applied to the field of gas adsorption and separation.

The invention provides a replacement vacuum pressure swing adsorption ethylene recovery system and method based on molecular sieves, the system comprises a plurality of adsorption towers which are connected, the adsorption towers are filled with molecular sieve adsorbents, the bottoms of the adsorption towers are connected with a feeding pipeline, an ethylene discharging pipeline and a replacement pipeline, the feeding pipeline is connected with feed gas, and the ethylene discharging pipeline is connected with the replacement pipeline. The ethylene discharge pipeline and the replacement pipeline are both connected with the ethylene product buffer tank, and the top of the adsorption tower is connected with a residual gas discharge pipeline; ethylene can be efficiently recovered by adopting the molecular sieve adsorbent, high-purity ethylene can be obtained by combining with reasonable step sequence setting, and a high ethylene recovery rate is kept; ethylene is recycled through replacement vacuum pressure swing adsorption, and the method is low in energy consumption, simple in technological process, convenient to operate and maintain and low in investment cost; the purity of ethylene is guaranteed through the replacement step, meanwhile, vacuum is added, ethylene can be recycled to a greater extent, it is guaranteed that precious resources are not wasted, meanwhile, the circular economy concept is met, and cyclic utilization of the resources is achieved.

The invention provides an adsorption process for recovering ethylene from refinery dry gas through combination of MOF and zeolite, raw material gas is refinery dry gas, a main body contains hydrogen, carbon dioxide, C1-C3 low-carbon hydrocarbon gas and the like, the content of C2H4 is about 10%, a pre-decarburization process and an associated bed process are introduced, the adsorption capacity of an adsorbent is protected, and the content of ethylene is reduced. The non-compliant purity ethylene gas in the pressure swing adsorption process is re-enriched and recovered through an associated bed; in the initial stage of adsorption separation, after CO2 is removed through a customized or commercialized adsorbent, C2H4 enrichment and purification are directly carried out, and by introducing an associated bed, ethylene in gas passing through the adsorption process and ethylene gas in the preliminary desorption process of the adsorption bed are captured again, so that the ethylene recovery rate in the process is improved.

The invention discloses a binder-free granular carbon molecular sieve and application thereof in C4 olefin mixture separation, and belongs to the technical field of C4 olefin adsorption and separation. The granular carbon molecular sieve for C4 olefin mixture component separation is obtained by crushing a precursor, screening particles with a proper particle size as a carbon source, and then performing carbonization and pyrolysis in a tubular furnace. The granular carbon molecular sieve disclosed by the invention is high in adsorption capacity, high in selectivity, good in stability, high in particle strength and easy to recycle and regenerate, and can be directly used for industrial devices. Compared with the traditional solvent absorption, extractive distillation and low-temperature distillation technologies, the separation method provided by the invention has the advantages of low energy consumption, small equipment investment, environmental friendliness and the like, and has a wide application prospect in the field of C4 olefin component separation.

Methods and systems for removing homogeneous catalyst-related contaminants present in a hydrocarbon may utilize a supported heteropolyacid scavenger. For example, a process may comprise: contacting a supported heteropolyacid scavenger with a hydrocarbon product comprising a hydrocarbon and 100 ppm or greater of homogeneous catalyst-related contaminants; and adsorbing at least a portion of the homogeneous catalyst-related contaminants onto the supported heteropolyacid scavenger to yield a cleaned hydrocarbon product comprising the hydrocarbon and 10 ppm or less of the homogeneous catalyst-related contaminants.

[Problem] To provide a method capable of producing a monocyclic aromatic hydrocarbon such as benzene or xylene effective as a base raw material, with a naphtha raw material containing renewable naphtha. [Solution] A method for producing at least one monocyclic aromatic hydrocarbon of benzene or xylene with a naphtha raw material containing renewable naphtha, the method including step (A-1) of pyrolyzing the naphtha raw material in the presence of water vapor, to produce and separate toluene, and step (A-2) of subjecting toluene to disproportionation reaction or transalkylation reaction, to produce and separate at least one monocyclic aromatic hydrocarbon of benzene or xylene.

The invention relates to a method for ultrasonic-enhanced extraction of a multicoloured leaf extract by using an ethanol and ethyl acetate cosolvent, and belongs to the technical field of chemical engineering and plant extraction. (2) synergistically degrading cellulose by using multi-component glycosidase; (3) cosolvent extraction; 4, chloroplast pigment is efficiently separated and purified, chlorophyll and other impurities in an extracting solution are effectively separated and removed through silica gel column chromatography, and therefore the high purity of the multicoloured leaf extract is achieved; according to the invention, ethanol and ethyl acetate are used as cosolvents to extract the multicoloured leaf extract, so that the extraction efficiency and the purity of the extract can be improved.

The invention relates to the field of molecular sieves, and discloses a modified and reinforced molecular sieve and application thereof in hydrocarbon dehydration, the modified and reinforced molecular sieve is obtained by mixing 4A molecular sieve raw powder, modified lamb liver soil and deionized water into spheres, calcining the spheres in a muffle furnace, crystallizing the spheres by using a sodium hydroxide solution, and then replacing the spheres by using a potassium chloride solution, the mass ratio of the 4A molecular sieve raw powder to the modified lamb liver soil to the deionized water is (5.5-6): 1: (1.2-1.6), the modified lamb liver soil is prepared by calcining lamb liver soil by using a muffle furnace and performing acid leaching for pretreatment, then performing amination modification by using gamma-aminopropyltriethoxysilane, and further performing in-situ growth of silicon dioxide nanoparticles on the surface of the aminated lamb liver soil through electrostatic assembly. The modified enhanced molecular sieve is prepared through balling, firing, crystallization in the alkaline environment and potassium chloride replacement, so that the static adsorption capacity of the modified enhanced molecular sieve is increased to about 24%, and the modified enhanced molecular sieve has better application in hydrocarbon dehydration.

The invention relates to an adsorbent based on an X molecular sieve and preparation and application thereof, and a preparation method of the adsorbent comprises the following steps: (1) mixing the X molecular sieve with a binder, molding and roasting to obtain a molded body; (2) treating the molded body obtained in the step (1) with an alkali solution to perform in-situ crystallization on the binder in the molded body to obtain a crystallized product; (3) carrying out partial barium ion exchange on the crystallized product obtained in the step (2) by using a barium salt solution, and drying to obtain a dried product; (4) carrying out ammonium ion exchange on the dried product obtained in the step (3) by using an ammonium salt solution, and roasting in a flowing atmosphere to obtain a roasted product; and (5) performing barium ion exchange and optional potassium ion exchange on the roasted product obtained in the step (4), and then drying to obtain the adsorbent. The adsorbent has at least two kinds of mesoporous channels with different apertures, has high barium ion exchange capacity, high adsorption capacity and compressive strength, and shows good adsorption selectivity and mass transfer performance when used for adsorption separation of p-xylene.

The present application discloses a method for purifying high-purity propylene, comprising: passing an industrial-grade propylene raw material into a condensation device for at least one condensation treatment to remove heavy components therefrom; analyzing and testing the product that has undergone at least one condensation treatment, and if the analysis fails, returning it for further condensation treatment until the analysis passes; passing the qualified product into an adsorption device for adsorption treatment to remove carbon dioxide and water therefrom; passing the adsorption-treated product into a distillation device for distillation treatment to remove light components therefrom; passing the distillation-treated product into a buffer tank for filling, thereby obtaining the high-purity propylene. The high-purity propylene purification method of the present application utilizes a combination of low-temperature liquefaction, adsorption, and distillation to directly purify industrial propylene with a purity of ≥2.5N into electronic-grade high-purity propylene with a purity greater than 4N.

The invention belongs to the technical field of new materials, and particularly relates to two zinc-based complexes as well as a preparation method and application thereof. The chemical general formulas are respectively [Zn2 (TMTA) (COO) (BPA) 2] n (UPC-198) and [Zn2 (TMTA) (COO) (BPE) 2] n (UPC-199), Zn is a divalent zinc ion, TMTA is a deprotonated 4, 4 ', 4' '-(2, 4, 6-triphenyl-1, 3, 5) tribenzoic acid ligand, BPA is 1, 2-bis (4-pyridyl) ethane, and BPE is 1, 2-bis (4-pyridyl) ethylene. Wherein the structure of the zinc-based complex belongs to a triclinic system and a P-1 space group, and the unit cell parameters of UPC-198 are as follows: the axial length # imgabs 0 #, the axial angle alpha is equal to 69.247 (3), the beta is equal to 88.215 (3), the gamma is equal to 68.462 (3), and the unit cell volume # imgabs 1 # Z is equal to 35. The unit cell parameters of the UPC-199 are as follows: the axial length # imgabs2 #, the axial angle alpha is equal to 69.029 (3), the beta is equal to 88.481 (3), the gamma is equal to 68.694 (4), and the unit cell volume # imgabs3 # Z is equal to 35. The zinc-based complex can be used for preparing an adsorption material, an antibacterial material, a catalytic material, a photoelectromagnetic material and a drug carrier material, belongs to a metal-organic framework structure, and is a composite functional porous material with great potential. The zinc-based complex can be applied to the field of low-carbon hydrocarbon gas separation.

A method for separating and purifying 4MP1 from a mixture containing 4MTP2 and 1-Hexene comprises the following steps: continuously introducing a solution in which 4MTP2, 1-Hexene and 4MP1 with any concentration are dissolved into a simulated moving bed chromatography system as a raw material solution, collecting a high-purity 4MP1 solution from raffinate of the simulated moving bed chromatography system by adopting a metal organic framework material as a stationary phase, and separating the high-purity 4MP1 solution from the raffinate of the simulated moving bed chromatography system. The extraction liquid is a solution containing impurities 4MTP2 and 1-Hexene. The invention provides a brand new method for separating 4MP1 from 4MTP2 and 1-Hexene, and a complete separation scheme is provided for the prior art; in the separation of high-concentration 4MP1, the relative purity of the separated and purified 4MP1 can reach gt; the recovery rate is gt; and in the separation of low-concentration 4MP1, the rectification level is also exceeded, and the method is more suitable for 4MP1 thermosensitive substances.

The invention relates to the technical field of chemical separation and purification, and discloses a method for separation and purification of taxadiene from tobacco and GC-MSMS quantitative detection.The method for separation and purification of taxadiene from tobacco comprises the following steps that S1, tobacco leaves are made into powder, an extracting agent is added, ultrasonic extraction is conducted for multiple times, and extract liquor is obtained; s2, evaporating the extract to dryness, adding an organic solvent, and dissolving to form a concentrated solution; s3, the concentrated solution is added into a silica gel column for gradient elution, and an extraction sample is obtained; and S4, evaporating the extracted sample to dryness, adding acetonitrile for dissolving, and carrying out secondary recrystallization to obtain purified taxadiene. According to the method, the efficiency and purity of separating the taxadiene from the tobacco are improved, and the taxadiene is accurately quantified.

The present invention provides a method for preparing high-purity n-hexane, comprising: adding analytical grade sulfuric acid to industrial grade n-hexane, stirring, and standing to separate the n-hexane; further removing impurities from the n-hexane through a modified molecular sieve; and finally adsorbing the n-hexane using long-wave ultraviolet light modified activated carbon. The industrial grade n-hexane removed impurities by adsorption of analytical grade sulfuric acid is successively subjected to a water vapor modified molecular sieve removal treatment and a long-wave ultraviolet light modified activated carbon adsorption treatment to directly obtain chromatographic grade high-purity n-hexane with a purity of not less than 99.99% and a 215nm ultraviolet transmittance of not less than 98%. The method is simple, easy to operate, stable in operation, and suitable for industrial purification applications.

The invention relates to a micropore-mesopore X molecular sieve, which is measured by a nitrogen physical adsorption method, the micropore specific surface area is 450-640m < 2 > / g, the mesopore specific surface area is 20-50m < 2 > / g, the pore size distribution curve shows at least two mesopore distribution peaks, the most probable pore size corresponding to one mesopore distribution peak is in the range of 3.0-7.0 nm, and the most probable pore size corresponding to the other mesopore distribution peak is in the range of 3.0-7.0 nm. And the most probable pore diameter corresponding to the other mesoporous distribution peak is in the range of 10.0-19.0 nm. The molecular sieve has good mass transfer performance and high aromatic hydrocarbon adsorption selectivity.

The invention relates to the field of acetylene purification and new materials, and particularly provides a double-interspersed MOF (Metal Organic Framework) and a preparation method and application thereof in acetylene purification, and the specific synthesis method comprises the following steps: reacting a tricarboxylic acid ligand 1, 3, 5-tris (4-carboxylphenyl) benzene (H3btb) with a nitrogen-containing methyl-containing ligand 3-methyl-1H-1, 2, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3-tetramethyl-1 The MOF (Zn-btb-fmtrz) with ultrahigh stability performance is synthesized from 2, 3, 4-triazole (fmtrz) and a zinc-containing compound, and the material can be used as an adsorbent, has strong acetylene adsorption action force, high selectivity and good stability, is suitable for industrial production, and shows a more excellent separation effect on low-concentration acetylene compared with a traditional method. The synthesized material is stable and has good acetylene adsorption capacity, and a new direction is provided for using MOF as an acetylene purification material.

The present invention relates to an X molecular sieve-based adsorbent. The adsorbent comprises at least 92 wt% of an X molecular sieve, and has a micropore volume of 0.18-0.30 mL / g and a mesopore volume of 0.01-0.1 mL / g. A pore size distribution curve of the adsorbent shows at least two mesopore distribution peaks, wherein the most probable pore size corresponding to one mesopore distribution peak ranges from 3.0 to 9.0 nm, and the most probable pore size corresponding to the other mesopore distribution peak ranges from 10.0 to 19.0 nm. The present invention further relates to a preparation method for the adsorbent, a use of the adsorbent, and a device comprising the adsorbent.

The invention discloses a method for preparing acetic acid from PTA tail gas, and belongs to the technical field of chemical energy conservation and consumption reduction, the method comprises the following steps: introducing the tail gas of a PTA tail gas washing tower into a tail gas drying system, removing moisture from the tail gas discharged from the PTA tail gas washing tower, then enabling the dried tail gas to pass through a CO2 pressure swing adsorption system, and separating CO2 through the specific adsorption effect of an adsorbent on CO2 molecules, cO2 adsorption and desorption are realized, and pure CO2 is collected and enters a storage tank. The device solves the problem of energy waste caused by tail gas emission to the air of the existing PTA device, and is mainly applied to the aspect of acetic acid recovery.

The invention relates to the field of oxygen-containing compound adsorption and removal, and discloses a molecular sieve adsorbent as well as a preparation method and application thereof. The method comprises the following steps: mixing a silicon source and an aluminum source, carrying out preliminary crystallization, aging and crystallizing in a gel-like mother solution containing the silicon source and the aluminum source to obtain an FAU molecular sieve seed crystal, and carrying out mixed crystallization on the FAU molecular sieve seed crystal, various molecular sieves and the aluminum source, forming and roasting the obtained molecular sieve mixed crystal, the sodium metaaluminate modified carbon nanotube, an aluminum source and an auxiliary component; and finally, carrying out surface modification by adopting anhydrous amino acid ionic liquid. The molecular sieve adsorbent has a hierarchical pore structure composed of abundant micropores and mesopores and a relatively high specific surface area, the adsorption performance is improved through modification of the amino acid ionic liquid and addition of the modified carbon nanotubes, and when the molecular sieve adsorbent is used for adsorbing and removing oxygen-containing compounds in olefins, the molecular sieve adsorbent shows a relatively good removal rate and a relatively long adsorption period, and the molecular sieve adsorbent has relatively good application prospects. The production cost can be effectively reduced, and the method has high production and application value.

The invention discloses preparation and application methods of a modified activated carbon adsorbent applied to removal of thioether compounds in styrene. The activated carbon adsorbent is characterized in that activated carbon is modified by using an acid and metal ion compounding method, the acid is selected from one of sulfuric acid, nitric acid and hydrochloric acid, the concentration of the acid is 1-7 mol / L, the metal ion is selected from one of Cu < 2 + >, Fe < 3 + > and Zn < 2 + >, and the loading capacity of the metal ion is 0.1-20 wt% of that of the activated carbon; according to the application method, modified activated carbon is taken as an adsorbent, and thioether is adsorbed through sigma complexation in a batch reactor at 30 DEG C, so that the purpose of removing thioether compounds in styrene is achieved. The adsorbent does not adsorb styrene and adsorbs at 30 DEG C, so that the styrene is not easy to be oligomerized, the loss of the styrene is avoided, and the static sulfur capacity of the adsorbent is improved from 2.5 mg / g which is not modified to 25mg / g after modification.

The invention discloses a process for adsorbing and separating ethane by using catalytic dry gas, and aims to solve the technical problems that in the prior art, the ethane adsorption effect is relatively poor, an adsorbent is not easy to regenerate, the chemical stability is relatively poor, next adsorption can be carried out only after desorption is completed after adsorption saturation, and the working efficiency is low. The process comprises the following steps: S1, pretreating dry gas; s2, preparing an adsorbent; and S3, the dry gas pretreated in the S1 is pressurized to the pressure condition required by the process through a compressor, and then the dry gas is cooled through circulating water and low-temperature refrigerant water in sequence. According to the process, the adsorbent is prepared by loading copper chloride on activated carbon, the prepared adsorbent has a better adsorption effect on ethane, the adsorbent can be regenerated and is good in chemical stability, and through the design of the two adsorption beds, one adsorption bed performs desorption while the other adsorption bed performs adsorption operation; and continuous adsorption and desorption operation can be realized, and the working efficiency is higher.