1.三聚磷酸鈉分類代碼(GBl5.003.INS451(i))。化學結構：本品為一種無定形水溶性線性聚磷酸酯，兩端以Na2PO4封端。其化學式為Na5P3O10.相對分子量為367.86.常用于食品中，作為保水劑、品質改良劑、pH調節劑和金屬螯合劑。
1. Classification code for sodium tripolyphosphate (GBl5.003. INS451 (i)). Chemical structure: This product is an amorphous water-soluble linear polyphosphate ester, with both ends capped with Na2PO4. Its chemical formula is Na5P3O10. The relative molecular weight is 367.86. It is commonly used in food as a water retaining agent, quality improver, pH regulator, and metal chelating agent.
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順酐廠家提醒您，該產品對眼睛、呼吸系統和皮膚有影響，避免接觸皮膚和眼睛。接觸眼睛后，請立即用大量水沖洗，咨詢醫生并穿上適當的防護服。儲存在密封的容器中，放在陰涼、干燥和通風良好的地方，遠離不相容的物質。儲存有利于保護的水分。
2. The manufacturer of maleic anhydride reminds you that this product has an impact on the eyes, respiratory system, and skin. Avoid contact with the skin and eyes. After contact with eyes, immediately rinse with plenty of water, consult a doctor, and wear appropriate protective clothing. Store in a sealed container, in a cool, dry, and well ventilated place, away from incompatible substances. Store moisture that is beneficial for protection.
3.三聚磷酸鈉是用純堿中和磷酸形成正磷酸鈉，然后濃縮而成。磷酸有兩種方法：濕法和熱法。濕法是磷礦與無機酸(一般是硫酸或鹽酸)反應，然后經過萃取、精制得到磷酸。熱法是用焦炭和二氧化硅在電爐中焙燒磷礦，將磷礦還原成磷，然后氧化水合得到磷酸。
3. Sodium tripolyphosphate is formed by neutralizing phosphoric acid with soda ash to form sodium orthophosphate, which is then concentrated. There are two methods for producing phosphoric acid: wet method and thermal method. Wet process involves the reaction of phosphate rock with inorganic acids (usually sulfuric acid or hydrochloric acid), followed by extraction and refinement to obtain phosphoric acid. The thermal method uses coke and silicon dioxide to calcine phosphate rock in an electric furnace, reduce the phosphate rock to phosphorus, and then oxidize and hydrate to obtain phosphoric acid.
4.由正磷酸鹽制備三聚磷酸鈉的工藝簡單，流程短，便于控制和操作。主要有兩種方法。
The process of preparing sodium tripolyphosphate from orthophosphate is simple, short, and easy to control and operate. There are two main methods.
5.噴霧干燥-轉化器縮聚兩步法：噴霧干燥器是一個圓筒，其上部連接一個帶煤氣噴嘴的臥式燃燒器。溫度為400500的氣體通過燃燒器引入噴霧干燥塔的上部，正磷酸鹽溶液由高壓泵(4.2MPa)注入。含水量低于5%的干燥產品從干燥機的下部連續取出。
5. Two step spray drying converter polycondensation method: the spray dryer is a cylinder, and its upper part is connected to a horizontal burner with a gas nozzle. The gas with a temperature of 400500 is introduced into the upper part of the spray drying tower through the burner, and the orthophosphate solution is injected by the high-pressure pump (4.2MPa). Dry products with a moisture content below 5% are continuously taken out from the lower part of the dryer.
6.正磷酸鹽混合物在回轉爐中脫水并濃縮成三聚磷酸鈉。這種方法的特點是產品不需要粉碎，噴霧干燥機干燥效率高，干燥后的物料非常均勻，不會出現分層。缺點是干燥和縮聚分兩個階段進行，直接加熱脫水粉塵損失大。
6. The orthophosphate mixture is dehydrated in a rotary furnace and concentrated into sodium tripolyphosphate. The characteristics of this method are that the product does not need to be crushed, the spray dryer has high drying efficiency, and the dried materials are very uniform without stratification. The disadvantage is that drying and polycondensation are carried out in two stages, and direct heating and dehydration result in significant dust loss.
7.一段干燥脫水法：將漿料噴入回轉爐內，通過噴嘴將熱氣送入爐內或燒油加熱。環形擋板將爐膛分成火焰段和加熱段。在加熱段，物料終脫水、縮聚并轉化為三聚磷酸鈉。
7. One stage drying dehydration method: Spray the slurry into the rotary furnace, and use a nozzle to send hot gas into the furnace or burn oil for heating. The annular baffle divides the furnace into a flame section and a heating section. In the heating section, the material is finally dehydrated, condensed, and converted into sodium tripolyphosphate.
If people are excessively exposed to sodium tripolyphosphate, it can cause great harm to their health. For example, it can cause obvious discomfort to the eyes. If people inhale this substance, it may cause some intestinal reactions such as nausea and vomiting. So you need to pay more attention and consult us for more matters http://www.paimaizhe.com Come on!
