37results about How to "Easy desorption and regeneration" patented technology

The utility model relates to a refining method of by-product HCl gas in organic chlorine production process, the by-product HCl gas passes by the absorption post filled with absorption resin at flow speed of 0.1-0.5m/s under constant-temperature constant-pressure, the removal ratio of the organic in the HCl gas can reach 99.8 percent, afterwards the absorption resin that absorbs the organic is desorbed by 110-160 DEG C saturation vapor, the desorption ratio can exceed more than 99 percent, the desorption liquid is condensed, oil-gas separated, recycled to obtain the organic mixture containing benzene or chlorobezene, the mixture is furthermore distilled and separated to obtain the benzene or chlorobezene, finally the absorption resin after desorbed by the vapor is dried by 110-140 DEG C hot air, and then cooled to room temperature for next stage absorption. The absorption resin can be reused after desorption and regeneration.

The invention discloses a method for adsorbing and separating a sulfur-containing acid gas. The method comprises the following step: by taking an anion-containing metal-organic frame material as an adsorbent, selectively adsorbing the sulfur-containing acid gas in a gas mixture so as to obtain a purified gas, wherein the sulfur-containing acid gas comprises one or more of sulfur dioxide, sulfur trioxide and hydrogen sulfide. The anion-containing metal-organic frame material used in the method has a great number of regularly arranged inorganic anion functional groups with negative electricity, the size of the aperture of an MOF material can be adjusted in a controllable manner by adjusting the size of organic ligand, or a three-dimensional channel spatial structure can be adjusted through an interpenetration structure. The inorganic anions with negative electricity can form an electrostatic environment in a limited space of the MOF material, sulfur-containing acid gas molecules can be selectively adsorbed by virtue of an electrostatic effect of the electrostatic environment and lacked electron atoms of the acid gas, and thus high-capacity high-selectivity separation of the sulfur-containing acid gas can be achieved.

The invention belongs to the field of preparation of a metal organic framework material, and relates to a preparation method of a novel adsorption material carbon nano-tube/UiO-66-NH2. The preparationmethod comprises the following steps: firstly, performing acidizing treatment on a multi-wall carbon nano-tube to ensure that carboxyl located at the defect sites of the carbon nano-tube is functionalized and then a coordinate bond is formed by simultaneously an organic ligand and metal ions, and performing self-assembly to form a nano-composite material. The carbon nano-tube participates in theUiO-66-NH2 material in a form of physical blending, and the carbon nano-tube/UiO-66-NH2 composite material is also formed in a form of chemical bond. Because addition of the carbon nano-tube, the water stability of the metal organic framework material is obviously improved, and the heat stability, the specific surface area and the pore volume aperture of the composite material are all improved toa certain extent, and thus, the composite material has more excellent adsorption performance. The preparation method is simple and effective, and a new way is provided for preparing the nano-tube/MOFscomposite material.

The invention discloses a method for processing hyper-saline organic wastewater. The method comprises the steps of gas stripping, resin absorption and active carbon absorption. The step of gas stripping comprises the steps of feeding wastewater into a polycarbonate producing process into a gas stripping tower, feeding a heating medium into the gas stripping tower to heat the wastewater, vaporizing a dichloromethane in the wastewater to condense and enter a solvent recycling system; the resin absorption step adopts macroporous resin; the active carbon absorption step adopts particle active carbon with a granularity of 10-24 meshes; before the resin absorption step, inorganic acid is added for adjusting pH value of the organic wastewater at 1-6; before the active carbon absorption step, alkaline liquid is added for adjusting pH value of the hyper-saline organic wastewater at 5-9. The method has the characteristics that operation is convenient and reliable and investment cost is low.

The invention discloses modified macroporous resin and a method for treating butyl acrylate production waste water by using the same. The modified macroporous resin is macroporous resin modified by amino; compared with the common macroporous resin, due to the special intermolecular action of the amino on carboxyl and hydroxyl, the modified macroporous resin is better in effect of absorbing acrylic acid, n-butyl alcohol, a polymerization inhibitor and the like, and is easy in desorption regeneration and stable in performance. The modified macroporous resin can be used for recovering the components such as the acrylic acid, the n-butyl alcohol and the polymerization inhibitor in butyl ester waste water, and is taken as a raw material of a butyl ester esterification reaction, thus realizing waste resource utilization and producing obvious economic benefit; furthermore, the waste water treated by using the modified macroporous resin can reach the requirement for the indexes of waste water discharged into the sea in China, so that the waste water can be directly discharged into the sea, the subsequent waste water treatment pressure is relieved, and a great environmental protection benefit is obtained.

The invention provides a desorption regeneration method of a hydrophobic macroporous polymer adsorbent adsorbed with butanol. The method disclosed herein comprises the steps of using water-soluble low-boiling polar solvent and water to successively elute the hydrophobic macroporous polymer adsorbent adsorbed with butanol. According to the invention, after a solution containing butanol (e.g. butanol fermentation liquor) is adsorbed by the hydrophobic macroporous polymer adsorbent, by using the desorption regeneration method disclosed herein, the full dissolution and desorption of the adsorbed butanol in the adsorbent can be realized; in addition, the regeneration treatment can be directly carried out on the adsorbent on a fixed bed where the butanol fermentation liquor is adsorbed, and the adsorption process of the next stage can be directly conducted without taking out the adsorbent from the fixed bed, thus a lot of time is saved, and the regeneration efficiency is raised. The method disclosed herein has the advantages of simple process, short separation time, easy, rapid and complete desorption and regeneration, low investment of devices, low pollution, and low energy consumption, and is easy for large scale production.

The invention belongs to the technical field of metal organic skeleton materials, and discloses a temperature-sensitive metal organic skeleton material, a preparation method, and applications thereof. In the preparation method, copper perchlorate, pyrazine, and pyrazine-2,3-dicarboxylic acid (double organic ligands) are stirred in a solvent at a room temperature to prepare the temperature-sensitive metal organic skeleton material. The temperature-sensitive metal organic skeleton material has a flexible skeleton structure, which can generate skeleton swelling absorption. The temperature-sensitive metal organic skeleton material has different swelling conversion pressures on alkene and alkane, so the temperature-sensitive metal organic skeleton material has a high selectivity on alkene and alkane, can carry out skeleton structure swelling absorption on alkene at the temperature of 273 K, and carry out skeleton structure contraction desorption at the temperature of 298 K, and thus desorption regeneration is easy for the skeleton material. The temperature-sensitive metal organic skeleton material can be used as an efficient energy-saving absorption separating material in the field of alkene/alkane separation and has a vast application prospect.

The invention relates to a treatment technology and system of organic waste water with high concentration. The technology comprises a biochemical treatment process and an advanced treatment process, and the biochemical treatment process is set before the advanced treatment process, wherein the biochemical treatment process is used for conducting biodegradation on the waste water; the advanced treatment process comprises the following steps that S1, the discharged water after the biochemical treatment process is subjected to super magnetic separation, and dephosphorization and turbid descendingare conducted on the waste water; S2, after super magnetic separation is completed, the discharged water flows into filtering equipment for filtering, so that the concentration of suspended matters in the discharged water after filtering is less than or equal to 10 mg/L; S3, after filtering, SMRES resin is adopted for adsorbing the discharged water. The technology adopts the method which combinesthe biochemical treatment process and the advanced treatment process for treating the organic waste water with the high concentration, not only can the removal rate of COD and NH3-N in the waste water be effectively increased to strengthen the effect of treating the waste water, but also the technology is applicable to printing and dyeing waste water, papermaking feedwater, electroplating wastewater and other high-concentration organic waste water of different types, and the effect of treating coking waste water is especially significant.

The invention discloses a method for capturing carbon dioxide from flue gas, which comprises the following step of: selectively adsorbing carbon dioxide in the flue gas by using an anion-containing hydrothermal stable column cage type metal-organic framework material as an adsorbent. The structure of the anion-containing hydrothermal stable column cage type metal-organic framework material is that hexa-coordinated metal ions M and a tridentate nitrogen-containing ligand L are coordinated to form a cage type structure, and then the cage type structure is connected through inorganic anions A to form a cross-linked column cage type structure. According to the method provided by the invention, carbon dioxide can be captured from the flue gas in a high-capacity and high-selectivity manner, the removal depth is high, the adsorbent is easy to regenerate, and the hydrothermal stability is good.

The invention discloses an alkaline functionalized porous polyion liquid material, a preparation method thereof and application of the alkaline functionalized porous polyion liquid material in selective adsorption and separation of sulfur dioxide. The alkaline functionalized porous polyionic liquid material has the characteristics of rich alkaline functionalized sites, high ionic liquid content and developed pore structure. Through strong interaction between alkaline sites and sulfur dioxide guest molecules, deep removal of sulfur dioxide in mixed gas is realized. The material is high in stability, simple to prepare, good in adsorption performance, capable of being recycled, environmentally friendly and good in industrial application prospect.