The invention relates to the use of a solvent (2) for selective absorption of CO 2 from the flue gas of a combustion plant The solvent (2) comprises an aqueous solution of a secondary amino acid salt (4) as an active scrubbing substance and an additive (6), the additive (6) comprising a primary amino acid salt (3) The invention further relates to a process for providing an absorption liquid, to the use of the solvent (2) for selective absorption of CO 2 from the flue gas of a combustion plant and to a process for activating a solvent

Solvent, process for providing an absorption liquid, use of the solvent and process for activation of a solvent

The invention discloses a composite absorber for catching CO2 gas of a membrane contactor; the composite absorber is composed of amino alkane sulfonate and poliamide organic amine; the total concentration of the amino alkane sulfonate and poliamide organic amine in the composite absorber is 0.1-4.0mol/L, and the mole ratio of the amino alkane sulfonate and the poliamide organic amine is 1:0.5-1.2. Compared with the prior art, the performance of the composite absorber for catching CO2 gas is superior to that of the existing CO2 absorber such as MEA (monoethanolamine) and other components, and is better than that of the single amino alkane sulfonate; the composite absorber has high mass transfer coefficient and can be operated stably in the membrane contactor.

Composite absorber for catching CO2 gas of membrane contactor

The invention discloses a catalyst used for synthetizing a polyamino compound and a preparation method for the catalyst and an application of the catalyst. The catalyst is a granular porous catalyst. Active components: nickel oxide (NiO), copper oxide (CuO), lanthanum trioxide (La2O3) and cobalt oxide (CoO), are loaded on a titanium-aluminum compound porous support by utilizing a precipitation method. By adopting the catalyst disclosed by the invention, organic alcohol amine and organic amine which serve as raw materials can be synthetized into the polyamino compound. The absorptive character of the polyamino compound prepared by the preparation method disclosed by the invention is superior to that of an acid gas absorbent commonly used at present.

Catalyst used for synthetizing polyamino compound and preparation method for catalyst and application of catalyst

The invention relates to a composite activating potassium carbonate solution for removing carbon dioxide from flue gas. A composite activating agent consists of alkaline amino acid salt and inorganic acid salt. The solution consists of the following components in percentage by weight: 15 to 50 percent of potassium carbonate, 0.5 to 10 percent of alkaline amino acid salt, 0.5 to 5 percent of inorganic acid salt (molybdate or borate) and 35 to 85 percent of water. The solution can be used for removing the carbon dioxide from the flue gas in a coal-fired power plant. Compared with other modified potassium carbonate systems, the modified absorption solution prepared from the composite activating agent consisting of environment-friendly alkaline amino acid salt and inorganic acid salt, and the potassium carbonate overcomes the defects of carcinogenicity of the solution, high running cost and the like, and has the characteristics of high CO2 absorption rate, environment friendliness, high heat resistance and chemical stability and the like.

Composite activating potassium carbonate solution for removing carbon dioxide from flue gas

Catalyst for synthesizing acidic gas absorbent and preparation method for catalyst

A composite solution used for membrane contactor to absorb acidic gas is composed of amino acid salt and activator in mole ratio of 1: (01-08) Its advantages are high absorptivity and regeneration performance, high surface tension, and high running stability and durability

Composite solution for membrane contactor to absorb acid gas

A processs for preparing the composite acidic gas absorbent used to prepare catalyst includes such steps as pulverizing porous silicon gel, sieving, drying, calcining, cooling, sequentially immersing in the aqueous solution of nickel nitrate and copper nitrate, and the aqueous solution of phospho-tungstic acid, laying aside, drying, slow calcining, coaling, heating the refractory inertial material to a certain temp, using N2 to displace the air in system, adding H2 and ethanolamine to evaporator of material, evaporating, catalytic reaction on gas-phase flowing material to obtain resultant, condensing to obtain liquid phase and separating H2.

Preparation of composite acid gas absorbent

Preparation method of composite acid gas absorbent

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Composite solution for membrane contactor to absorb acid gas

Preparation of composite acid gas absorbent

Preparation method of composite acid gas absorbent