Heating technology of oil tank truck
Oil tank plays an important role in the process of oil and gas storage and transportation. Most of the oil and gas storage and transportation are carried out by oil tank truck. When oil is needed, the oil is exported from the tank. In the process of oil output, will inevitably encounter such a problem, because the oil temperature is low, the flow becomes thick oil reduces, causes the output of oil from the oil tank can not smooth, encountered such a problem, how to solve? According to reports, the new type of local rapid heating technology to solve such a problem.
Heating characteristics:1 、 heating speed, heat transfer efficiency is high, not easy to scale.2, quantitative heating of the oil, how much heating required?.3, the oil will not appear local high temperature and carbonization, to ensure the quality of oil and heater heat transfer efficiency.4. The temperature of the oil outlet in the tank is the highest, which ensures the flow of the oil.5, avoid repeatedly heating the oil in the tank to ensure the chromaticity of the oil and reduce the cost of oil treatment.6, long service life, corrosion resistance, high temperature resistance, high pressure resistance, anti fouling function, greatly improving the overall performance of the heat exchanger.7, advanced design of process structure, guarantee the smooth flow of oil and better "pumping tank bottom" role.8. Automatic control can be realized. Steam feed can be controlled according to the temperature of oil inlet and outlet and the flow rate of pour oil.9 、 compact structure, easy installation and maintenance, not because of the installation of heaters and tank safety. Compared with the U tube heat exchanger, under the same heat exchange area, the size of the vortex heat film heat exchanger is only about 1/2 of the overall size of the U tube heat exchanger.10, relative to the electric heating method, more safe, heating more gentle, less impact on oil quality.Compared with the traditional heating technology of tubular tank heating: heating heat medium oil heating temperature heating time of condensed water temperature steam consumption of heat exchanger 8Mpa saturated steam 60T/t 30 DEG -60 DEG C for 14 hours and 30 minutes to 100 DEG C for 6 tons of oil tank local fast heater 8Mpa saturated steam 60T/t 30 DEG -60 DEG C for 1 hours and 30 minutes 55 C 96 tons note: data from the comparison of Sinopec lubricating oil field
Working principle：1, the film eddy heat exchanger "along the radial tank into the tank bottom, the heat medium (steam) through the tube side, the oil from the shell tube ned flow between the shell oil inlet is directly communicated with the medium in the tank.2. The temperature control valve is set at the steam inlet of the heat exchanger. The temperature of the steam inlet of the heat exchanger is controlled by detecting the temperature of the oil outlet of the heat exchanger so as to ensure the constant temperature of the oil product.The high-efficiency heat exchange element - membrane eddy heat pipe heat exchanger, keep the oil flow in the pipe between the reasonable thermal efficiency, is 3-5 times that of ordinary heat exchanger, the heat transfer enhancement mechanism is: oil fluid in the inner and outer surface flow into turbulent flow design, produce a strong shock and erosion, changing the direction of flow that is close to the high temperature oil fluid tube surface continues to replace the insulation layer thinning and destruction, the metal surface heat transfer speed, the micro fluid vortex strengthen, so that the internal heat oil fluid diffusion enhancement. The fluid on the surface of the pipe wall can not be produced by local high temperature overheating, so that the oil can be properly and fully heated without the possibility of coking decomposition. Good heat transfer, and no resistance will be great.