Apr
27
Soap are the main component of sodium stearate, its molecular formula is C17H35COONa (C 17 H 35 + C + O + O + Na) (also written RCOONa, by the sodium hydroxide [NaOH] and base react together produce oil ). If you add spices and dyes which, it may lead to both color and fragrance of the soap was there; if entered, and add some drugs (such as boric acid, or carbolic acid), it becomes a medicated soap.
Soap is a basic chemical reaction generates oil and soap and glycerin base interaction: reaction from the soap after salting, washing, housekeeping, known as the soap, and then continue processing while a different product forms of soap.
- Refining: Remove the oil impurities. Refining process used, including off Jiao, alkali refining (deacidification) bleaching. Retting is to remove grease and other phospholipids in the gum resin with water to phospholipids such as hydration, and then precipitation of the hydration method; and the use of concentrated sulfuric acid to phospholipids and impurities like carbon, precipitation of acid refining method. Alkali refining oil in the main role is to remove the free fatty acids, but produce flocculent soap, oil absorption away in addition to the pigments and impurities.
- Saponification: Refined oil saponification reaction with alkali. Saponification boiling cooking method is the main method of soap were cylindrical or square pan. With the exception of oil, lye, water, salt water pipes, etc., but also with direct steam or steam coil to pass into the steam and stir soap material. Pot is also equipped with a shaking her head tube, pipe missing you can put any liquid soap for the discharge of the pan material. Bottom tapered discharge tube under the control marker can be shaking his head after the release of the remaining residue. Oil and caustic soda in the soap pot boiling to about 95% saponification, soap material was homogeneous saponification closed state to stop operating.
- Salt: In the closed soap compound, add salt or saturated salt water, so that dilute glycerin soap and water separation. So that the lowest concentration of precipitated soap is called the limit concentration of salt. Closure of the soap gel salting, the top is called soap soap; lower glycerin with salt water discharged from the Department of soap bottom to recover glycerol.
- Washing:After separation of liquid, add boiling water and steam soap, so that a uniform state by the analysis of open soap gel, wash out the residue of glycerol, pigments and impurities.
- Alkali: To make soap completely within the residual oil saponification, further analysis by the alkaline wash out the glycerin soap, salt, pigment and impurities. Alkali water completely precipitated as the minimum concentration of alkali concentration on Alkali water limit.
- Forming: Condensed into large soap soap plate, then cut into soap billet, after printing, drying into a laundry soap, soap and other products.