White or off-white crystalline powder; almost odorless, bitter. Soluble in methanol, soluble in ethanol, slightly soluble in isopropanol, slightly soluble in water, soluble in dilute hydrochloric acid. This product has a significant inhibition of gastric acid secretion, can significantly inhibit the basic and nighttime gastric acid secretion, but also inhibit the secretion of gastric acid caused by histamine, peptide gastrin, insulin and food, and reduce its acidity, the cause Corrosive gastritis caused by chemical stimulation has preventive and protective effects, and has obvious curative effect on stress gastric ulcer and upper gastrointestinal bleeding.
Economic performance of cimetidine dryer:
1. Continuous operation, high thermal efficiency. The disc type continuous dryer is dried by conduction heat transfer. During the drying process, only a small amount (or no air) is introduced into the dryer, and the exhaust gas carrying amount is small, so the thermal efficiency can reach more than 65%.
2. Low power consumption and low noise. Due to the thin layer in the drying process, the spindle speed is low, the power required for the material conveying system is small, and the power consumption is small. The power consumption of the complete drying device is only 1/5~1/7 of the power consumption of the convection heat transfer device. And the noise is very small.
3. The material is evenly heated and the drying time is short. Since the material rolls in the drying tray along the Archimedes spiral trajectory during the drying process, the material travels five times the radius of the drying disc and falls down layer by layer, so the material contacts the heating plate surface for the same time and the heat is evenly distributed. .
4. Material loss is small and environmental protection is good.
5. Large drying capacity.
6. The equipment is closed and continuous operation, and the labor intensity of the workers is low.
7. The drying medium can utilize the steam generated by the waste heat boiler, thereby saving a lot of coal.
Energy saving and environmental protection of cimetidine dryer:
The disc dryer works vertically, the wet material is added from the top feeding port, and is discharged from the bottom of the dryer through each drying tray. The whole drying process is closed, and the moisture released from the material is exhausted from the top of the dryer. Directly discharged into the atmosphere, the main component of the exhaust gas is water vapor, there is no entrainment of the dried product, and there is no environmental pollution.
