1. HTF indicators of Huanyou
Kinematic viscosity mm2 / s (40 ℃): the original target ± 20%;
Residual carbon:> 1.5%;
Acid value mgKOH / g:> 0.5%;
Flash point ℃: the original target ± 20%;

2. HTF with the operation of warming
HTF system installed after the pipeline should purge the welding slag, rust and debris purge and clean.
HTF system pressure test the application of compressed air to avoid water pressure test, the water pressure test last resort should be fully ranked clean water, or conducting oil warming will be very difficult.
Canada should be conducting oil from the expansion into the trough, through the expansion of a whole system, until the expansion slot of the reported disappearance of low-level.
HTF coal-fired stove in the opening should be preceded by dry wood oven, furnace, water evaporation of refractory bricks, about five to seven days, ovens to be refueled.
Start loop pump, a cooling loop, the first row of the air system and check the heating system.
Loop exhaust, a gradually warming up step by step manner, ruled out further remnants of the system in the air, water and the possible existence of the gasification of low boiling point, to 20 ℃ per hour increase in the rate of warming up to 120 ℃ ~ 130 ℃ after insulation 5 to 6 hours. In 95 ℃ ~ 120 ℃ the warming process should be extra cautious to avoid the storms boil.
In 120 ℃ ~ 130 ℃ loop stability, the system differential pressure normal, then heated to 180 ℃ ~ 200 ℃, for 2 to 3 hours, in the absence of abnormal warming directly to 280 ℃, and then adjusted to 260 ℃ ~ 270 ℃ the The use of normal temperature, in normal operation.