Introduction to the commonly used Chinese medicine extraction equipment multifunctional extraction tank

**Multifunctional Extraction Tank: Advantages and Limitations**

**Advantages:**

- **Ease of Operation:** The tank is simple to operate and allows for flexible process applications.

- **Versatile Extraction Methods:** It supports various extraction techniques, including atmospheric pressure, reduced pressure, pressurized, decoction, warm immersion, percolation, and forced circulation.

- **Adaptability:** Suitable for short-term extraction of plant stems and leaves, with strong process adaptability.

**Disadvantages:**

- **Multi-Step Process:** The extraction process requires multiple steps, leading to higher solvent consumption and longer extraction times.

- **Energy Consumption:** Extraction and concentration cannot be performed simultaneously, resulting in larger extract volumes and higher energy consumption during concentration.

**Operating Conditions:**

- **Pressure:** The operating pressure is 0.15 MPa, with an interlayer pressure of 0.3 MPa, classifying it as a pressure vessel.

- **Safety Measures:** Ensure safety valves, pressure gauges, and pressure-reducing valves are functioning properly before operation.

**Optimizing Extraction:**

- **Concentration Gradient:** Maintaining a maximum concentration gradient is crucial for effective extraction. Once the gradient diminishes, the solvent should be replaced, as prolonged extraction is inefficient.

Combining the multifunctional extraction tank with concentrators enables dynamic, continuous extraction, enhancing overall efficiency.