460results about How to "Improve the desorption effect" patented technology

The invention provides a smoke desulphurization agent. The desulphurization agent is aqueous solution containing a main absorption component, an activating agent, an anti-oxidation component and acid, wherein the main absorption component is one or more of alkyl piperazine, hydroxyalkyl piperazine and hydroxyalkyl piperazine ketone; the activating agent comprises piperazine and diazabicyclo; and the anti-oxidation component is at least one of 4-tert-butyl catechol, 2,6-di-tert-butyl-p-phenylcresol, acetone oxime and N,N-bi (2-ethoxy) glycine. The smoke desulphurization agent provided by the invention can remove and reclaim sulfur dioxide in the smoke, and has higher desulphurization rate; moreover, even if the smoke desulphurization agent is strongly oxidized and then is recycled, the absorption capacity for the sulfur dioxide is still stable; and in addition, the rich liquor formed by desulphurization after adopting the desulphurization agent has better desorption performance such as high desorption rate.

The invention discloses a method for coal bed methane mining by multi-element thermal fluid foam displacement. Multi-element thermal fluid is injected into a coal bed of an injection-production well group through an injection well, and foaming agent is injected at intervals. A multi-element thermal fluid foam slug is formed in the coal bed to displace the coal bed methane in order to improve the recovery efficiency of the coal bed methane. The method specifically includes that extracted coal bed methane is compressed and mixed with compressed air, and then the mixture is injected into a multi-element thermal fluid generation device for ignition, extracted processed ground water is mixed to produce the multi-element thermal fluid mainly with high-temperature and high-pressure water vapor and mixed gas of carbon dioxide and nitrogen, the produced multi-element thermal fluid is injected into the underground coal bed through the injection well, a foaming system composed of preferred alkyl ether sulfonate and corrosion inhibitor is injected from an oil jacket annulus at intervals, the multi-element thermal fluid foam slug is formed under the ground to displace the coal bed methane, and water is drained and gas is recovered from a production well. The method has the advantages that fuel is easy to obtain, principles are clear and distinct, and the like, and can provide guidance for implementation of well stimulation of the coal bed methane.

The invention relates to the field of organic waste gas treatment and resource utilization and particularly relates to a double-fluidized bed adsorption and desorption device and a method for continuous treatment of organic waste gas. The device provided by the invention comprises a fluidized bed adsorption device (1), a preheater (5) and a fluidized bed desorption device (6), wherein an adsorbent outlet at the bottom of the fluidized bed adsorption device (1) is connected with a feed port of the preheater (5); a discharge port of the preheater (5) is connected with a feed port of the fluidized bed desorption device (6); and a solid outlet of the fluidized bed desorption device (6) is connected with a solid inlet of the fluidized bed adsorption device (1). In the invention, continuous treatment of high-concentration organic waste gas can be realized, heat accumulation can be prevented, and the problems such as bed fire and explosion caused by the dissipation failure of the reaction heat due to the excessively high concentration of the high-concentration organic waste gas are avoided; and moreover, the desorption effect of the adsorbent and the exit concentration of concentrated VOC gas are improved, and the catalytic combustion or solvent recycling is facilitated.

The invention discloses an in-situ remediation method for polluted place based on dynamic groundwater circulation. The in-situ remediation method couples and optimizes a dynamic groundwater circulation technology and an in-situ microbial or chemical reduction / oxidation technology, pollutants are repaired, fixed, detoxified by the reduction / oxidation effect of the in-situ microbial or chemical technology, and a dynamic groundwater circulation system reduces or removes the total amount of pollution in order to improve the desorption capacity of the pollutants and repair the transmission and distribution ability of a reagent in an underground environment. The in-situ remediation method for the polluted place fully performs the respective advantages of all above technologies, makes up for thedeficiencies of the technologies, and can improve the in-situ microbial or chemical repairing efficiency, reduce the cost and the energy consumption and shorten the repairing cycle by reducing the total pollutions and carrying out microbial or chemical reduction / oxidation, fixation and detoxification.

The invention belongs to the technical field of soil microbial restoration, and particularly relates to a microbial restoration agent for heavy metal contaminated soil and a restoration method. The restoration method mainly comprises the two steps of preparation of the microbial restoration agent and spraying restoration of the soil. Treatment is conducted on the metal contaminated soil by adopting the microbial restoration agent for the heavy metal contaminated soil and the restoration method, the content of heavy metal in the soil can be rapidly reduced, and the restoration effect is good. The restoration method is simple in operation and low in cost, the restoration method is low in project investment, the dosage of the microbial restoration agent can be adjusted according to practical conditions, when a plurality of metal elements exist in the contaminated soil, treatment can be conducted by mixing and matching different thalli to prepare a microbial restoration agent according to needs. The soil fertility is not damaged and indigenous microorganisms are not harmed when restoration is conducted on the soil by adopting the restoration method, secondary pollution does not exist, the microbial restoration agent and the restoration method are safe and environmentally friendly, and suitable for restoration of a large area of heavy metal contaminated soil, is good in practical application effect, and can be used in a large scale.

The invention discloses an experimental method for raising gas desorption property, characterized by based on the experimental study of gas absorption, desorption and permeability by existing non-mechanical method, using an experimental device which comprises a gas bottle, a pressure-tolerant gas pipe, a valve, a gas storage tank, a drying agent, a pressure sensor, a desorption pot, a positive electrode, a constant temperature water tank, a guide wire, a high-voltage variable-frequency power source, a vacuum pump, a data collection card, a computer, a rubber pipe, a measuring tube, and an Erlenmeyer flask, putting an experimental coal sample in the desorption pot, using the high-voltage variable-frequency electric field to change the physicochemical properties of the coal and allow the moisture in the coal and different charged ions dissolved in the water molecules to directionally move, thus free and adsorbed gas is increased, and the desorption property is raised. According to the invention, compared with the gas desorption property obtained by using a natural coal sample, when the high-voltage variable-frequency power source output voltage is 2kV and the frequency is 40Hz, the desorption is averagely raised by 11.42%.

The invention belongs to the technical field of oil gas recovery and particularly relates to a method for preparing active carbon / silica gel oil gas absorbing composite material prepared by using rice husk. The rice husk is pickled and purified and the silicon component in the rice husk is dissolved out by using NaOH solution. The desiliconized rice husk is activated by H3PO4 into active carbon, the removed silicon is added with H2SO4 to prepare silicon gel, the prepared active carbon and silicon gel powder are crushed and formed, and the oil gas absorbing composite material is prepared by high-temperature calcining. The preparation method is simple, easy to implement and low in cost, and the prepared composite absorbing material has good absorbing effect on oil gas and can be regenerated easily.

The invention discloses a preparation method of undecylene amido propyl betaine modified diatomite. The method is characterized in that after diatomite is treated with 2 mol / L HCL, pretreated diatomite is obtained; the pretreated diatomite is subjected to organic modification by using absolute ethyl alcohol and (3-chloropropyl)trimethoxysilane; then 45%-55% of deionized water and 8%-18% of undecylene amido propyl betaine are added to a reactor in percentage by mass, the mixture is stirred for dissolution, then 28%-38% of organic diatomite is added, the mixture is evenly mixed, 5%-8% of hydrogen peroxide with the mass percentage concentration of 30% is added, the sum of percentages of all components is 100%, the mixture is stirred at the constant temperature of 65 plus / minus 2 DEG C for a reflux reaction for 4-6 h, solid-liquid separation is performed after cooling, separated solids are washed with deionized water until the filtrate is neutral, filtration and drying are performed, and the undecylene amido propyl betaine modified diatomite is obtained. The adsorbent has very high adsorption capacity for oil, has excellent physical and mechanical properties and high regeneration capacity, and capable of being reused, low in cost and environment-friendly.

The invention provides a phase change absorbent for capturing CO2 in the waste gas. The phase change absorbent for capturing the CO2 in the waste gas comprises an alkylol amine absorbent, an amine absorbent, a nanoparticle, a corrosion inhibitor, an antioxidant, a defoamer and water, the mass ratio of the alkylol amine absorbent to the amine absorbent, to nanoparticles to the corrosion inhibitor to the antioxidant to the defoamer to the water in the phase change absorbent for capturing CO2 in the waste gas is (15%-20%):(5%-10%):(0.01%-0.1%):(0.01%-0.2%):(0.01%-0.2%):(0.01%-0.1%):(70%-80%). Thephase change absorbent for capturing CO2 in the waste gas increases the absorptive capacity of CO2, increases the capturing rate of CO2, reduces the corrosion rate of equipment, improves the self-stability, reduces the regeneration temperature, reduces the energy consumption of regeneration, and improves the degradation effect.

The invention provides a device for recovering oil and gas by condensation-adsorption method. The device comprises a heat exchanger, two adsorbers, a dry-type vacuum pump, an absorption tower, an oil-rich pump, an oil-lean pump, an air discharge pipe, and is characterized in that the left end of the heat exchanger is provided with an oil-gas inlet; the right end of the heat exchanger is provided with an oil-gas outlet; the outlet is connected with the bottoms of the adsorbers through pipelines; the bottom of the heat exchanger is connected with an oil inlet of the dry-type vacuum pump through the pipelines; the bottoms of the two adsorbers are connected with an oil-gas inlet of the dry-type vacuum pump through the pipelines; the upper parts of the two adsorbers are connected with the air discharge pipe through the pipelines respectively; an oil-gas outlet and an oil outlet of the dry-type vacuum pump are connected with the lower part of the absorption tower through the pipelines respectively; an outlet of the oil-lean pump is connected with an oil inlet of the dry-type vacuum pump, the top of the absorption tower and a bottom outlet of the heat exchanger through the pipelines; and the bottom of the absorption tower is connected with an inlet of the oil-rich pump through the pipelines. The device has the oil-gas emission concentration detection value less than or equal to 5 g / m3 and the recovery rate more than or equal to 99 percent, can reduce the consumption of adsorbent by 10 to 50 percent, and particularly utilizes liquid oil condensed by the heat exchanger and lean oil together to cool the dry-type vacuum pump so as to further improve the vacuum degree of the dry-type vacuum pump, thereby having ideal desorption effect.

The invention disclose a high-efficient energy saving type activated carbon fiber organic exhaust gas recovery system, comprising at least two active charcoal adsorbers, an adsorption filter element arranged inside the active charcoal adsorbers, a valve provided with an embedded type valve core for the adsorption filter element; the valve comprises a flange, a sealing pad and an unsealing air cylinder; the flange is fixed above the adsorption filter element; the sealing pad as the valve core is arranged in a cavity which is composed of the flange and the adsorption filter element; the unsealing air cylinder is fixed above the sealing pad and is connected with the sealing pad by a connecting rod; the size of the sealing pad is adapted with the caliber of the flange. The sealing pad is arranged in the cavity which is composed of the flange and the adsorption filter element; the sealing pad is controlled by the unsealing air cylinder to seal a flange port from bottom to top; a sealing direction of the sealing pad is the same as an impact direction of the vapor in the course of the adsorption; therefore, the higher a vapor pressure is, the better the sealing effectiveness is.