The core of selecting temperature control equipment for pharmaceutical drying equipment is to match the drying process requirements, comply with GMP standards, and ensure temperature control accuracy and stability.

1. Core selection principles
① Prioritize aligning the drying process parameters, clarify the required temperature control range, allowable temperature difference (usually ≤± 1 ℃), and heating rate.
② To meet the requirements of pharmaceutical GMP, the equipment must have no hygiene dead corners, be capable of online cleaning (CIP), and be made of materials that meet pharmaceutical standards (such as stainless steel).
③ Adapting to different types of drying equipment, there are significant differences in the requirements for temperature control equipment among different drying machines.

Case Study of Temperature Control in Chengdu Luoshi Drying Machine

2. Select targeted drying equipment types
①Oven/box dryer: Electric heating thermal oil furnace or steam heater is preferred, with strong temperature control uniformity, suitable for drying bulk solid materials.
②Spray dryer: rapid and accurate temperature control is required. Electric heating air heater+PID temperature control system is recommended to support instantaneous temperature rise and stable constant temperature.
③Vacuum drying machine: Due to the low heat transfer efficiency in a vacuum environment, it is suitable for thermal oil temperature control systems or electric heating plates to avoid pressure risks caused by steam heating.
④ Fluidized bed dryer: Choose a combination of hot air stove and electric auxiliary heat to ensure stable inlet air temperature and adapt to the temperature requirements of material fluidization state.
3. Verification of key technical indicators
①Temperature control accuracy: The core indicator needs to reach ± 1 ℃, meeting the strict requirements of pharmaceutical processes.
②Material safety: For parts in contact with materials or heat transfer media, pharmaceutical grade materials that are non precipitating and corrosion-resistant should be used.
③Explosion proof and safety: For solvent based material drying, explosion-proof temperature control equipment should be selected, equipped with over temperature alarm and pressure protection devices.
④Automation integration: supports linkage control with drying equipment, can record temperature control data, and meets GMP traceability requirements.