Collision detection system of oil pipelinesDecember 26, 2017
In Refinery Reservoir Tanks, hydrocarbons and petroleum products inevitably contain some water which is vacated through the pipes positioned nearly on bottom of the tanks. In Iran's refineries, the act of drainage happens by manually opening the drain valve by the operator. This traditional method involves human error which could waste hydrocarbons. In the refineries of the advanced countries, this method is performed by sending probes to the reservoir which carry sensors (Figure 1). Two probes are assembled in different heights near the bottom of tanks (Figure 2).
When the amount of water in the reservoir exceeds the standard limit, an electronic valve should be opened, and when the density of water in the tank is reduced, the valve is closed. In this method, refineries face with some disadvantages and problems.
In this method, due to the fact that the sensors are in the full contact with the product, it can cause many problems like an increase in sensor wear, difficulty of installing the system, interruption to the process of refineries during the installation and high maintenance costs.
The Tank Dewatering System produced by Karafan Pardaz firm does not have the aforementioned problems due to the implementation of new technologies. This system can be easily installed in the drainage pipe and does not stop the refinery process. The sensors in this method are not in direct contact with products which result large decrease in maintenance costs. The system can automatically detect the percentage of water and hydrocarbons passing through the tank drainage pipe. As a result, if it detects that hydrocarbon passes through the tube, it closes the drain valve and prevents the loss of hydrocarbons.
This system has been installed at Tabriz refinery and has received the following approvals.
This video demonstrates how this system works.