3 results about "Salt calcium" patented technology

This invention discloses a method for the comprehensive utilization of calcium and magnesium solution and CO2, comprising the following steps: S11: using high-salt calcium and magnesium wastewater and CO2 tail gas as raw materials, the high-salt calcium and magnesium wastewater contains CaCl2 and MgCl2, water-soluble amine is added to the high-salt calcium and magnesium wastewater and mixed, and CO2 tail gas is introduced to carry out a mineralization reaction, generating calcium carbonate precipitate, water-soluble amine hydrochloride and magnesium bicarbonate; S12: solid phase calcium carbonate is obtained by solid-liquid separation, oil-soluble amine is added to the separated liquid phase, HCl in the water-soluble amine hydrochloride is extracted, the water-soluble amine is regenerated, and oil-soluble amine hydrochloride and magnesium carbonate trihydrate precipitate are generated; S13: after phase separation, the aqueous phase is separated by solid-liquid separation to obtain liquid phase water-soluble amine and solid phase magnesium carbonate trihydrate, and the oil-soluble amine hydrochloride in the oil phase is pyrolyzed to obtain regenerated oil-soluble amine and HCl gas. This invention utilizes a water / oil dual-phase amine-enhanced calcium-magnesium solution mineralization CO2 and an extraction-pyrolysis synergistic regeneration cycle process to achieve harmless treatment and resource utilization of both calcium-magnesium-containing high-salt wastewater and CO2 tail gas.

The application discloses a kind of tough fatigue-resistant hydrogel for buffering impact and preparation method, belong to novel soft material field.The application is based on the energy dissipation design of combined long-chain linear polymer preparation strategy and solvent space restriction strategy, by increasing the content of acrylamide monomer in precursor liquid, and using the strong water-binding ability of hydrophilic salt calcium chloride, a long-chain high polymer hydrogel without crosslinking point is prepared.The hydrogel prepared by the application is a linear hydrogel with strong toughness and fatigue resistance.The chains in linear hydrogel are more easily entangled, have higher interchain interaction, can effectively improve the fracture toughness, fatigue threshold and energy absorption of hydrogel, and can be widely used as high-performance damping material.

Calcium carboxylate is prepared by reacting water, calcium oxide, and a compound of formula (I), wherein R is C1-C3 alkyl and R1 is C1 alkyl or C2 alkyl. The reaction solution is heated to remove a quantity of by-product from the reaction solution. The calcium carboxylate can be recovered from the reaction solution in solid form.