Method for detecting yield of biodiesel

The invention relates to the field of biodiesel processing, and particularly discloses a biodiesel yield detection method. According to the method, when esterification reaction is carried out, a one-way valve is additionally arranged between a methanol and sample communicating pipe, so that a sample can be effectively prevented from being sucked back; the glass tube extending into the sample end is replaced by the porous glass plate gas-guide tube, so that the contact area can be obviously increased, blasting boiling is prevented, and the reaction is milder and more uniform; a heating sleeve for heating is replaced by the constant-temperature digital display magnetic stirring heater, so that the distillation temperature can be conveniently and accurately controlled, the oil outlet temperature is also clearly recorded, meanwhile, a series of potential safety hazards caused by too high temperature are also prevented, and the safety is higher. 本发明涉及生物柴油加工领域，具体公开了一种关于生物柴油得率的检测方法。该方法中在进行酯化反应时，通过在甲醇和样品连通管中间加一个单向阀，能