Cold water extraction system

The working principle of water extraction equipment is primarily based on the differences in solubility of various substances in a solvent (such as water), achieving the separation and extraction of target substances from mixtures through specific physical or chemical means. Below is a detailed explanation of its core working principle and key processes in English:

I. Basic Principle

Water extraction equipment utilizes the difference in solubility of solutes in two immiscible (or partially miscible) solvents to transfer target substances from one solvent (typically a solid or liquid mixture) to another solvent (water or an aqueous organic solvent). This process is grounded in the chemical principle of “like dissolves like,” meaning that solutes tend to dissolve in solvents with similar chemical properties.

II. Working Process

Mixing and Contacting:

In water extraction equipment, the mixture to be extracted (such as a solid sample or a liquid mixture) is thoroughly mixed with water or an aqueous extractant.

Through means such as stirring, shaking, or a circulating pump, the two phases (solid-liquid or liquid-liquid) are brought into full contact, facilitating the transfer of target substances from the original solvent to the aqueous phase.

Mass Transfer and Separation:

During the mixing process, target substances gradually transfer from the original solvent to the aqueous phase based on their differences in solubility in the two phases.

Through methods such as settling, centrifugation, or filtration, the two phases are separated to obtain an aqueous extract containing the target substances.

Subsequent Treatment:

The extract is further processed, such as through concentration, purification, or analysis, to obtain the target substances or meet subsequent process requirements.

III. Key Technologies and Equipment Features

Efficient Mixing Technology:

Water extraction equipment is typically equipped with efficient mixing devices, such as stirrers, shakers, or circulating pumps, to ensure thorough contact and mixing of the two phases.

Precise Control of Parameters:

The equipment can precisely control parameters such as temperature, pressure, and time during the extraction process to optimize extraction efficiency and the recovery rate of target substances.

Automation and Intelligence:

Modern water extraction equipment often features automation and intelligence, enabling automatic control and monitoring of the extraction process to improve production efficiency and product quality.

Safety and Environmental Protection:

Equipment design emphasizes safety and environmental protection, adopting measures such as closed operation and waste gas treatment to reduce harm to the environment and operators.

IV. Application Areas

Water extraction equipment is widely used in various fields such as chemicals, pharmaceuticals, food, and environmental protection for the extraction and separation of various organic and inorganic substances. For example, in the pharmaceutical industry, it can be used to extract active ingredients from plants; in the environmental protection field, it can be used to treat harmful substances in wastewater.