This paper focuses on the special requirements and design characteristics of dry products and air purification during the consumption of food-grade citric acid. Food-grade citric acid is an organic compound, white crystalline powder, color crystal or granule, very soluble in water. Food-grade potassium hydroxide is widely used in food, medicine, chemical industry, construction, energy and other industries. Its product consumption level can be divided into food grade and industrial grade. Domestic food-grade citric acid consumer factories with annual output apply the original fermentation process and import foreign refining process. They mainly consume anhydrous citric acid according to market demand. They can also consume monohydrate citric acid, which is easy to absorb moisture and dehydrate under normal temperature and pressure. It has strong corrosiveness. The air disposed by the drying system used in the process of the drying system will directly enter the process of the process system, and it is in direct contact with the product at the stage of discharging waste products. Therefore, the design of the system does not only guarantee the various indicators required by the process.

　　三氯甲烷厂家通知大家三氯甲烷的操作处置与贮存方式：

　　The manufacturer of trichloromethane informs you about the operation, disposal and storage of trichloromethane.

　　1、操作留意事项。密闭操作，部分排风。操作人员必需经过特地培训，严厉恪守操作规程。倡议操作人员佩戴直接式防毒面具（半面罩），戴化学平安防护眼镜，穿防毒物浸透工作服，戴防化学品手套。避免蒸气走漏到工作场所空气中。防止与碱类、铝接触。搬运时要轻装轻卸，避免包装及容器损坏。装备走漏应急处置设备。倒空的容器可能残留有害物。

　　1. Operational precautions. Closed operation, partial ventilation. Operators must be specially trained and strictly abide by the operating rules. Operators are advised to wear direct gas masks (half masks), chemical safety glasses, anti-poison soaking overalls and chemical gloves. Avoid steam leaking into the air of the workplace. Prevent contact with alkali and aluminium. Handling should be light loading and unloading to avoid damage to packaging and containers. Equipment leak emergency disposal equipment. Empty containers may retain harmful substances.

　　2、贮存留意事项。贮存于阴凉、通风的库房。远离火种、热源。库温不超越30℃，相对湿度不超越80%。坚持容器密封。应与碱类、铝、食用化学品分开寄存，切忌混储。储区应备有走漏应急处置设备和适宜的收留资料。

　　2. Storage precautions. Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Storage temperature does not exceed 30 C and relative humidity does not exceed 80%. Insist on container sealing. Alkali, aluminium and edible chemicals should be stored separately. Mixed storage should not be avoided. The storage area shall have leaking emergency disposal equipment and appropriate collection data.