54results about How to "Effective desorption" patented technology

The invention provides a heat repairing method for organic contaminated soil. Smoke of a combustion furnace is used for heating the organic contaminated soil in an in-situ or different-position manner, and heavy metal type pollution, pesticide type pollution, hydrocarbon pollution and biology and nutrient type pollution are separated from the soil. According to the method, the strong heat decomposition and stabilizing functions are achieved for the pollutants which belong to the heavy metal type such as chromium, cadmium, mercury, arsenic, lead, copper, zinc and nickel; the organic pollutants which belong to the pesticide type such as insecticide, acaricide, bactericide, herbicide, nematicide and a plant growth regulator can be effectively desorbed at the high temperature; the extremely high pyrolysis effect is achieved for hydrocarbon pollutants including petroleum hydrocarbon, halohydrocarbon, polycyclic aromatic hydrocarbon and the like; and the biology and nutrient type pollutants can be completely decomposed at the high temperature.

The invention discloses a method for recovering cefprozil from cefprozil crystallization mother liquor. The method is characterized in that the absorption, desorption and crystallization treatment is performed on the cooled cefprozil crystallization mother liquor by adopting macro-porous resin, and the purified cefprozil is recovered. The method comprises the following steps: by utilizing the macro-porous resin, in combination with the cooperation of the adsorption conditions of specific pH, temperature and flow rate and the desorption conditions of certain pH, temperature and flow rate of a specific analytical solution, effectively absorbing and efficiently desorbing the cefprozil remaining in the efprozil crystallization mother liquor through the macro-porous resin and recovering; finally de-coloring, crystallizing, filtering and drying the analytical solution to obtain a high-purity cefprozil product conforming to qualified product standard requirements. The method disclosed by the invention is high in recovery rate, simple and convenient to cooperate, low in cost, green and safe; and the residue of the cefprozil in the cefprozil crystallization mother liquor after recovery treatment is less than or equal to 1 mg/ml, so that the COD value of wastewater can be effectively reduced, and the environmental protection pressure and the wastewater treatment cost are reduced, and therefore, the economic and social benefits are significant.

The invention discloses a method for advanced removal of sulfide dioxide from mixed gas. Ionic gel with high degree of crosslinking is taken as an adsorbent and makes contact with the mixed gas, and sulfide dioxide is efficiently removed from mixed gas; the ionic gel with high degree of crosslinking has rich ion groups and specific compact polymer network, so that the ionic gel has unique adsorption function on sulfide dioxide, has the advantages of high adsorption capacity, superhigh selectivity and the like and can realize efficient desulfurization of the mixed gas; the ionic gel with high degree of crosslinking is simple, green, rapid to prepare, excellent in thermal stability and water stability and applicable to industrial large-scale production and application. Under the optimizationcondition, the removal rate of sulfide dioxide in the mixed gas is higher than 99%, and the recovery rate of other gases is higher than 99%; the ionic gel with high degree of crosslinking can realizecomplete desorption under the physical adsorption function, the one-time removal efficiency is improved, and long-time circulation use is facilitated.

The invention relates to a multifunctional antigas tapestry, which is mainly used to overcome the defect of the prior common tapestry with only appreciation of art and without absorption function for noxious gas and radiation ray. The multifunctional antigas tapestry is characterized in that the tapestry can be made by taking the activated carbon fiber yarn as raw material and using the weaving method of common carpet; or taking the activated carbon fiber felt as raw material and coating a layer of cotton or silk fabric with flare or other artistic effect on the felt surface (the felt surface must be polished before processing) based on the coating technique; or taking the activated carbon fiber fabric as raw material and printing the various decorative textures and patterns on the fabric surface after sewing with stacked layers; or taking the yarn mixed with activated carbon short fiber and terylene short fiber as raw material and using the weaving method of common carpet. The multifunctional antigas tapestry has the advantages that the tapestry can adsorb the toxic gas and the harmful radiation ray emitted by the decorative materials in living room, so the tapestry has not only the appreciation of art but also the specific environmental function.

The invention discloses a resin regeneration method for resin used for treatment on high-boiling residue wastewater, and belongs to the field of resin regeneration. The method comprises the following steps: 1) carrying out mechanical impurity removal on high-boiling residue wastewater; 2) adsorbing high-boiling residues in the effluent subjected to impurity removal through resin; 3) carrying out nitrogen stripping treatment on the resin adsorbed with the high-boiling residues; and 4) desorbing the resin subjected to air stripping treatment in the step 3) by a non-polar organic solvent. According to the present invention, with the application of the method to treat the resin, the regeneration rate of the resin is substantially improved compared to the direct desorption of the resin adsorbing the high-boiling-point substance by using the non-polar organic solvent.

The invention belongs to the field of research, development and application of the high-concentration petroleum-contaminated soil remediation technology, and further develops a cleaning-heat treatment coupling technology for high-concentration petroleum-contaminated soil. The technology achieves a treatment process for the high-concentration petroleum-contaminated soil. The technology comprises the following steps that cleaning pretreatment is conducted on the contaminated soil to be treated by utilizing a cleaning system which does not contain a surfactant medicament, and a treatment technology change time node is judged by investigating index changes such as particle size composition changes, dirty oil distribution variable coefficients, medium and low carbon number dirty oil component content and soil water content of the contaminated soil; and a thermal desorption treatment mode is coupled, so that the treatment of the high-concentration petroleum-contaminated soil to be treated is achieved. According to the cleaning-heat treatment coupling technology, the cleaning pretreatment process and the thermal desorption treatment technology are organically combined, the efficient and low-consumption treatment process for the high-concentration petroleum-contaminated soil is achieved, and good application and popularization prospects are achieved.

The invention relates to a regeneration and activation technique of solid adsorbent polluted by iodine, which comprises the following steps in sequence: the solid adsorbent polluted by iodine is placed in 0.01 to 1 percent of acetic acid for cleaning; (2) the cleaned adsorbent is soaked in sodium thiosulfate solution with the concentration of 0.01 to 2 percent in static state or placed in a column and the sodium thiosulfate solution with the concentration of 0.01 to 2 percent is injected for regeneration so as to lead the pollutants in effective pore channels of the adsorbent polluted by iodine to be precipitated completely; (3) then the obtained adsorbent is placed in the column and ion exchange is carried out by injecting active metal Ag<+> solution till the concentration of the active metal Ag<+> on the solid adsorbent reaches the concentration before the solid adsorbent is polluted. The invention has low energy consumption and convenient operation, in particular to the regenerative technique condition that any heating facility is not used, the concentration of the used regenerative liquid is low and can effectively desorb iodine pollutants; the appearance of the activated adsorbent is same as new carriers, is off white, is characterized by high silver-loaded quantity and high adsorption and effectively prolongs the service life of the adsorbent, thus reducing the cost of iodine desorption.

The invention relates to a device of increasing thermal-circular gas desorption efficiency and a method thereof. In the method, a by-pass system is added at each of the front and the back of an activated charcoal bed. On the basis of thermal-circular gas desorption, compressive condensation and a membrane separation system are employed for increasing desorption efficiency. During adsorption, a valve of the by-pass is closed so that the by-pass system is out of work; during desorption, an inlet-outlet valve of to-be-processed gas on the activated charcoal bed is closed and the valve of the by-pass is opened and then thermal gas desorption is carried out through circular heating by a circulating fan and a gas flow heater. When the gas is heated to a preset temperature, the valve and a pressure-reducing valve are opened, so that a part of the gas passes through an air compressor and then is condensed in a condenser to recycle organic solvents being high in purity, wherein the gas being not recycled is completely separated through the membrane separation system. High concentration gas is subjected to compressive condensation recycling before flowing-back to the air compressor through the valve, while clean gas is heated in the gas flow heater through the pressure-reducing valve and the valve and then is desorbed. The device is used of purification of polluted gas and recycling of organic solvents, is greatly increased in desorption efficiency and is increased in recycling purity and recycling efficiency of the organic solvents.

The invention discloses a method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves. The method comprises the following steps of: removing moisture in the sisal hemp leaves; placing the dehydrated sisal hemp leaves in a reaction vessel, adding sodium hydroxide solution and sealing the reaction vessel; conducting microwave heating on the reaction container containing the sisal hemp leaves and the sodium hydroxide solution; and taking out and washing the sisal hemp leaves from the reaction container by clear water, and removing slag to obtain sisal hemp fiber. The temperature, needed by degumming, of the solution can be achieved within short time by adopting auxiliary microwave heating; and the sealed reaction vessel can generate high pressure in heating, thus being capable of enabling the solid gum on the sisal hemp leaves to be quickly detached from a solid fiber interface. Due to adoption of higher temperature and pressure, the sisal hemp leaves can be degummed within shorter time so as to obtain fiber in leaves. With the adoption of the method, the content of fiber in the sisal hemp leaves can be accurately determined, the determination speed is high, and the method plays an important role in the aspects of purchase, culture management, sisal hemp fiber machining and the like of the sisal hemp leaves.

The invention discloses an aluminum quantum well laser device and a preparation method thereof. The preparation method comprises the following steps: employing an ammonium polysulfide solution to process an oxide on an etching surface, and generating a sulfide protection layer; and sequentially growing a waveguide layer and a third InP layer on the surface of an InP substrate by adopting metal organic vapor deposition, and in the heating process before growth of metal organic vapor epitaxial deposition, and baking the etching surface to desorb sulfur atoms of a sulfide protection layer so as to generate elemental sulfur which is sublimated along with carrier gas. Compared with a traditional passivation technology, the process for solving the problem of oxidation of the etching surface of the laser containing the aluminum quantum well is low in cost, simple in process and high in stability.

The invention discloses a dried blood spot carrier material for desorbing an electrospray ionization mass spectrum, and an application thereof in phospholipidomics; the dried blood spot carrier material is composed of a glass sheet and PARAFILM fixed on the glass sheet, and a sample application slot is formed in the PARAFILM. Since the PARAFILM is made of a non-cellulose base material, and the adsorption on compounds is weaker than that of a cellulose base material, so that the compounds can be desorbed more efficiently; in addition, the constituents of PARAFILM are very difficult to be ionized under the action of electrospray and are unlikely to bring impurity signals to the carrier material itself in mass spectrometry; and the sample application slot can prevent a blood sample from spreading on the one hand to improve the strength of the compounds, and can fix the blood spot on the other hand. By adopting the dried blood spot carrier material disclosed by the invention, the technicaldefects of the non-cellulose base material for DBSS in the DESI-MS analysis are solved, and it is possible to expand the research field of DBSS DESI-MS.

The invention discloses a treatment method of precious metal-containing wastewater, and belongs to the field of wastewater treatment and resource recycling. The method comprises the following steps: adsorbing the precious metal-containing wastewater by using resin, desorbing and regenerating the resin by using hot water, and controlling the pH value of the wastewater to be 4-6, so as to directly recover precious metals by using an electro-deposition method and reduce the operation links and lower the cost. According to the method, after the wastewater containing the precious metal is adsorbedand discharged, the concentration of the precious metal is reduced to 0.01 mg/L or below, and the emission standard of precious metal pollutants is met.

The invention discloses a regenerating method of an oil product desulfurization adsorbent. The method comprises the following specific steps: filling a closed filling box with an adsorbent uniformly and continuously vacuumizing the closed filling box to be close to a vacuum state by using a vacuum pump, wherein the vacuumizing time is 6h; heating the filling box to 60-80 DEG C and keeping the temperature for 1h; and blowing 99.999% nitrogen into the filling box through a blowing pipe of the filling box to blow the adsorbent, wherein the blowing speed is 6-8m/s and the blowing time is 0.5h andthe like. Organic matters in the adsorbent can be desorbed effectively in a manner of gradient temperature rise for many times, and meanwhile, adsorbates on the adsorbent can be quickly replaced and extracted by means of intermittent nitrogen blowing and replacement matched with vacuumizing. Meanwhile, longer-time replacement can be provided in a manner of integral gradient temperature rise-blowing and temperature rise-blowing again, so that the integral regenerating efficiency is higher, and the method is integrally pollution-free and more environment-friendly.

The invention discloses a leaching agent for diesel oil-based or/and white oil-based oil-containing drilling cuttings as well as a preparation method and an application thereof, belongs to the field of environment-friendly treatment of petroleum drilling, and solves the problem that no leaching agent is suitable for both diesel oil-based oil-containing drilling cuttings and white oil-based oil-containing drilling cuttings in the prior art. The invention relates to the leaching agent for diesel oil-based or/and white oil-based oil-containing drilling cuttings. The leaching agent comprises the following components in parts by volume: 80-95 parts of chlorinated hydrocarbon, 1-20 parts of isopropyl myristate and 1-20 parts of polysiloxane. The method is scientific in design and ingenious in conception. The invention creatively provides the leaching agent which can be used for diesel oil-based oil-containing drilling cuttings and also can be used for white oil-based oil-containing drilling cuttings. The leaching agent disclosed by the invention is non-flammable, high in safety, good in compatibility, capable of effectively desorbing various organic pollutants on the oil-containing drilling cuttings, and relatively good in biodegradability.