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79results about How to "Reduce desorption energy consumption" patented technology

Renewable flue gas desulphurization process

The invention provides a renewable flue gas desulphurization process. The renewable flue gas desulphurization process comprises an absorption process and a desorption process. In the absorption process, the following steps are sequentially carried out according to the flowing direction of flue gas: absorbing oxysulfide in the flue gas by using a half-lean solution to form a first pregnant solution; further absorbing the oxysulfide in the flue gas by using a lean solution to form a second pregnant solution; catching a desulfuration solution carried in the flue gas by using a detergent; and discharging clean flue gas. The desorption process comprises the following steps of: carrying out first desorption on part of the first pregnant solution to form a half-lean solution and desorption gases; simultaneously carrying out second desorption on part of the first pregnant solution and part of the half-lean solution to form a lean solution and desorption gases; condensing and recycling oxysulfide in the desorption gases; and respectively supplying the other part of the half-lean solution and the lean solution for the absorption process so as to realize the circulation of the desulfuration solution between the absorption process and the desorption process. The renewable flue gas desulphurization process is suitable for processing various oxysulfide-contained flue gases or industrial waste gases.
Owner:PANGANG GRP PANZHIHUA STEEL & VANADIUM +2

Desulfurization method for purifying flue gas

The invention relates to a desulfurization method for purifying flue gas. The desulfurization method comprises the following steps: removing ash, dust, fluorine, chlorine and bromine which are possibly contained in the flue gas from the flue gas by passing through a pre-washing tower; absorbing sulfur dioxide in purified gas through a desulfurizer barren solution by passing through an absorption tower; converting the barren solution into a pregnant solution, wherein the gas out from the absorption tower meets a waste gas emission standard; performing thermal desorption on the pregnant solution after the pregnant solution exchanges heat with barren solution out from a desorption tower; and releasing the sulfur dioxide in the pregnant solution, wherein mixed gas out from the desorption tower can be used as a chemical raw material after being dewatered, the desulfurizer is an ionic solution which contains an ionic liquid and an ionic solvent. According to the sulfur dioxide removal process which takes the ionic solution as a cycle gas cleaning solvent, the equipment corrosion can be reduced, the solvent consumption amount is reduced, the power consumption is reduced, and the operating cost is reduced. The ionic solution can adsorb a large amount of sulfur dioxide, and is easy to desorb and high in recycling stability.
Owner:BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG

Solar thermal assisted temperature swing adsorption carbon trapping system

The invention discloses a solar thermal assisted temperature swing adsorption carbon trapping system. The solar thermal assisted temperature swing adsorption carbon trapping system comprises a solar heat collecting unit and a temperature swing adsorption carbon trapping unit, wherein the temperature swing adsorption carbon trapping unit comprises a solar heat collector, a heat storage device, an oil storage tank, a heat conducting oil pump and the like; the temperature swing adsorption carbon trapping unit comprises a gas booster pump, an electronic control valve, a four-way reversing valve, a working medium pump, at least one group of double adsorption reaction tower structures and the like. The solar heat collecting unit can provide all heat for a desorption process of the temperature swing adsorption carbon trapping unit; in addition, by adding the heat storage device, the stability of providing the desorption heat can be guaranteed; the temperature swing adsorption carbon trapping unit adopts a circulation mode of double reaction towers, so that the continuity of the temperature swing adsorption carbon trapping process can be guaranteed, and the gas production rate is improved; the desorption energy consumption of temperature swing adsorption carbon trapping is remarkably lower than that of chemical adsorption carbon trapping; the solar thermal assisted temperature swing adsorption carbon trapping system has universality for allocation of solar energy.
Owner:TIANJIN UNIV

Method using high-viscosity absorbent to separate CO2 based on dissolution assisting effect

The invention relates to a method using a high-viscosity absorbent to separate CO2 based on a dissolution assisting effect and belongs to the technical field of gas separation and the field of environment protection. The method is characterized in that due to the dissolution assisting effect of amine, a novel absorbent can be obtained by mixing an organic solvent which does not dissolve in water with the high-viscosity amine absorbent; the novel absorbent reacts with to-be-separated CO2, the novel absorbent forms liquid-liquid phases or liquid-solid phases due to the fact that the amine is reduced during the reaction and the dissolution assisting effect is weakened, and the two phases are respectively a CO2-loaded rich phase and a CO2-loaded poor phase; desorption is performed only on the CO2-loaded rich phase to obtain CO2; the absorbent after the desorption is mixed with the CO2-loaded poor phase to perform circulation absorption. The method has the advantages that the viscosity of the absorbent is lowered during the absorption, the concentration of the absorbent is increased during the desorption, the treatment quantity of a desorption unit is reduced, water evaporation amount and temperature rising energy consumption are lowered, and the high-viscosity absorbent can be used to separate the CO2 with low energy consumption.
Owner:BEIJING UNIV OF CHEM TECH

Carbon nannotube adsorption component as well as preparation method and application of carbon nannotube adsorption component

The invention discloses a carbon nannotube adsorption component as well as a preparation method and application of the carbon nannotube adsorption component. Carbon nanotubes of the carbon nannotube adsorption component grow at one side of each metal wire mesh belt, a strip-shaped structure is formed at the side by arranging the sides, not provided with carbon, of the metal wire mesh belts at intervals; upper and lower outer layers of the strip-shaped structure are packaged by using filter cloth, and the whole strip-shaped structure is strip-shaped and can be wound; when being wound to form acylindrical structure, the strip-shaped structure has the height-to-diameter ratio of 1:1 to 1:5; and a carbon nannotube adsorption device applying the carbon nannotube adsorption component is internally filled with the carbon nannotube adsorption component, the void ratio of a bed layer of the component is 70-95%, and no gas or liquid distribution devices are arranged in the device. The inventionfurther discloses a preparation method of the carbon nannotube adsorption component and a mounting method of the carbon nannotube adsorption device; it is not needed that the carbon nannotube adsorption device is additionally provided with an independent gas or liquid distribution device, and the carbon nannotube adsorption device can be used for adsorbing and rapidly desorbing organic matters inwastewater or gases; and the carbon nannotube adsorption component has the advantages such as firm structure, long service life, high throughput, low preparation cost and low treatment energy consumption.
Owner:TSINGHUA UNIV

Temperature swing adsorption carbon-capturing system utilizing microwave heating to assist in desorption process

The invention discloses a temperature swing adsorption carbon-capturing system utilizing microwave heating to assist in desorption process. The temperature swing adsorption carbon-capturing system comprises a temperature swing adsorption carbon-capturing unit, a microwave desorption unit and a cooling unit, wherein the carbon-capturing unit comprises an air compressor, two electric control valves,two adsorption towers and one four-way reversing valve; the microwave desorption unit comprises microwave heating devices respectively arranged on the two adsorption towers; the two adsorption towersare each wrapped with a heat-insulation layer; the cooling unit is composed of a cooling tower, a water pump and an electric-control three-way valve; and the microwave desorption unit provides the temperature swing adsorption carbon-capturing unit with heat required in the desorption process and has the advantages of high heating speed and high energy utilization rate. The system of the inventionhas an adsorption temperature of 20-35 DEG C and a desorption temperature of 110-130 DEG C, and ensures the maximum adsorption capacity of zeolite 13X; and the circulation mode of two or more reaction towers is utilized, so the continuity of the process of temperature swing adsorption carbon capturing can be ensured, the capturing rate of carbon dioxide is increased, and industrial production isfacilitated.
Owner:TIANJIN UNIV

Oxidation inhibitor, carbon dioxide absorbent and carbon dioxide absorption method thereof

ActiveCN112546840AIncrease absorption rateExcellent cycle absorption performanceProductsGas treatmentSulfolaneCo2 absorption
The invention discloses an oxidation inhibitor, a carbon dioxide absorbent and a carbon dioxide absorption method thereof. The carbon dioxide absorbent comprises a mixed aqueous solution of ethanolamine (MEA) and sulfolane (TMS) and an oxidation inhibitor, wherein the oxidation inhibitor is selected from glycerol, D-sorbitol, xylitol and erythritol; and MEA and TMS account for 25%-50% and 20%-50%respectively, and the content of the oxidation inhibitor is greater than 0 and less than or equal to 10%. The method comprises the following steps: adding the carbon dioxide absorbent into an absorption tower for an absorption reaction with carbon dioxide gas to form a carbon dioxide absorption liquid; enabling the carbon dioxide absorption liquid to enter a phase splitter for standing and layering to form an enriched phase enriched with carbon dioxide and a lean carbon dioxide absorption phase; and enabling the enriched phase to enter a desorption tower to desorb high-purity carbon dioxide, and returning the absorption phase to the absorption tower as the carbon dioxide absorbent to continuously participate in the absorption reaction. The method has the advantages of good absorbent oxidation inhibition, high carbon dioxide absorption efficiency and the like.
Owner:TSINGHUA UNIV

A liquid-liquid phase transition absorbent for acid gas separation

The invention relates to a liquid-liquid phase change absorbent for separating acid gas. The absorbent comprises the following components in percentages by mass: 10-60% of ethanolamine, 20-60% of other water-soluble organic compounds and 10-70% of water. Before the liquid-liquid phase change absorbent absorbs acid gas, the liquid-liquid phase change absorbent is a homogeneous-phase body, and after the liquid-liquid phase change absorbent absorbs acid gas, the liquid-liquid phase change absorbent forms into liquid-liquid phase spontaneously; the upper liquid phase is a barren liquor phase which loads acid gas, the lower liquid phase is a rich liquor phase which loads acid gas, and only the rich liquor phase enters a desorption unit, so that desorption energy consumption is reduced. After the liquid-liquid phase change absorbent absorbs acid gas, the liquid-liquid phase change absorbent forms into liquid-liquid phase for facilitating separation; according to characteristics of the absorbed acid gas, ratio of the absorbent can be adjusted for adapting to optimal volume ratio of the upper liquid phase and the lower liquid phase and load capacity of the absorbent in the process, so that amount of the rich liquor phase which enters the desorption unit in industrial environment is reduced, and energy consumption in the desorption process is reduced as possible.
Owner:BEIJING UNIV OF CHEM TECH

Sulfur dioxide removal composition, and preparation method and desulfurization method thereof

The invention belongs to the technical field of gas separation and purification, and concretely relates to a sulfur dioxide removal composition, and a preparation method and a desulfurization method thereof. The technical problems to be solved by the present invention comprise low desulfurization rate and low desorption rate of existing desulfurization agents. The sulfur dioxide removal composition comprises 5-50 parts by weight of a main absorbent, 0.1-20 parts by weight of an activator, 0.05-5 parts by weight of a corrosion inhibitor, 25-95 parts by weight of water, and an acid; the additionamount of the acid makes the pH value of the sulfur dioxide removal composition be 4.0-5.0; the corrosion inhibitor is composed of a metal oxide and monooleic acid imidazoline; the main absorbent isdiazabicyclooctane; and the activator is at least one selected from hydroxyethylethylenediamine, diethylenetriamine, tetraethylenepentamine, triethylenetetramine and triethylenediamine. The sulfur dioxide removal composition has the advantages of good sulfur dioxide absorption effect, high absorption speed, high absorption capacity, high desorption rate and low energy consumption in desorption, and has a desorption rate of 94.08-99.28%.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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