Supercritical extraction/reaction integrated device

Abstract

The invention relates to a supercritical device and particularly relates to a supercritical extraction / reaction integrated device. According to the supercritical extraction / reaction integrated device, a storage tank I of fluid for extraction is connected with an inlet I of a mixer by a condenser and a pump I in sequence; an outlet of the mixer is connected with an inlet of an extraction unit; an outlet I of the extraction unit is connected with a separation unit by a valve V; fluid for reaction and a co-solvent storage tank II are connected with the inlet of a pump II; an outlet I of the pump II is connected with an inlet II of the mixer by a valve I; an outlet II of the pump II is connected with an inlet I of a reaction kettle by a valve II, a pre-heater II and a valve III in sequence; an outlet of the reaction kettle is connected with a gas-liquid separator by a valve VI and a quench cooler in sequence; an outlet II of the extraction unit is connected with an inlet II of the reaction kettle by a valve IV. The supercritical extraction / reaction integrated device has the beneficial effects that independent extraction and reaction can be realized and extraction / reaction integrated operation can also be realized.

Description

technical field [0001] The invention relates to a supercritical device, in particular to a supercritical extraction / reaction integrated device. Background technique [0002] Supercritical fluid has both the characteristics of gas and some characteristics of liquid, and some properties are between the properties of gas and liquid. The density of supercritical fluid is close to that of liquid, and its viscosity and diffusion coefficient are close to those of gas. This makes They have both strong dissolving power and strong diffusing power. And these properties, such as density, viscosity, diffusion coefficient, dielectric constant, solubility, etc., can be adjusted by pressure and temperature within a certain range, and this adjustment effect is particularly significant near its critical point. [0003] Based on the many superior properties of supercritical fluid, its further utilization has attracted much attention. Among them, the superiority of supercritical extraction te...

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Problems solved by technology

And there is no report at home and abroad for extraction / reaction integrated processing equipment, but supercritical extraction and reaction separate equipment have some reports, disclose a kind of low-pressure supercritical extraction process and device as CN1994507A, this equipment mainly meets 1,1, The working condition of 1,2-tetrafluoroethane as a supercritical fluid, the working pressure is 0.8-8.0MPa, the pressure range is small, the extraction fluid that can be used in the equipment is single, and it cannot be widely used in supercritical CO 2 Fluids with slightly higher temperature and pressure cannot be widely used

Similarly CN102391912A also announced a kind of supercritical extraction equipment of peony essential oil, the equipment is mainly for the purpose of extracting peony essential oil, the equipment has a high degree of specificity, is not suitable for extracting other raw materials, and is relatively restrictive

Both types of extraction equipment have high specificity, and it is difficult to widely extract target substances from solids (such as agricultural waste) and liquids (organic wastewater)

CN202786160U discloses a tubular supercritical biomass hydrolysis liquefaction device, CN201632252U discloses a tower-type supercritical reaction device, and CN101164912A discloses a corrosion-resistant and anti-clogging supercritical water oxidation reaction device. Critical reaction devices can achieve the purpose of oxidative degradation of raw materials with supercritical water, but the single type of fluid used cannot adapt to the research purposes of supercritical ethanol, phenol, acetone, etc.

There is no integrated supercritical extraction and supercritical reaction equipment at home and abroad, especially the equipment can use fluids with universal applicability such as water, ethanol, phenol, acetone, CO 2 The integrated equipment that can be used and intelligently controlled by temperature and pressure is a vacancy. This invention is just to meet the needs of current research and development, to meet the integrated operation from extraction, reaction to material separation, and to mix and use multiple supercritical fluids. Combined with entraining agent, it is designed and created according to scientific research requirements of highly intelligent and precise digital display

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