In the specification of emulsified bitumen, transpiration residue is the key control target, and it is also one of the key monitoring targets of engineering supervision. Emulsified bitumen road specifications are called transpiration residues, and waterproof specifications are called solid contents. The term solid content is used in engineering practice, and the term solid content is used. How accurate is the control of bitumen emulsification equipment?

The solid content of emulsified bitumen is determined by mass. At present, the emulsified bitumen equipment mainly adopts the following methods to adjust the solid content of the emulsified bitumen.

The speed of the gear pump is used for calibration, that is, how much bitumen or emulsion can be passed by one revolution of the gear pump. This method is the most primitive. First of all, the gears of the pumps of different manufacturers are different, and the measurement error of the gears is too large. Then there is the emulsion as an aqueous solution, which has a small viscosity. Under pressure, the reflux is very severe; Some manufacturers of electric motors use electromagnetic speed control. They do not know the actual speed of the pump. Even if frequency conversion control skills are used, the problem of speed difference still exists. It can be seen from these aspects that the emulsified bitumen equipment using this metering method is the least reliable.

Use volume flow meter for measurement. Emulsion and bitumen separations are metered through a flow meter. This kind of measurement method requires cooperative automatic matching calculation software to achieve good effect.

Use mass flow meter for measurement. This metering method is more accurate in controlling the solid content of emulsified bitumen.

Temperature method. Using the principle of energy conservation, the specific heat capacity requirements of the materials are measured. The specific heat varies depending on the crude oil used in the bitumen and the refining process. For manufacturers, the specific heat capacity required before each production operation is not strong.