Method and device for detecting liquid level in lower tower of fractionation tower

Abstract

The invention discloses a lower fractionating tower liquid level detection method. The method comprises the following steps that 1, the bottom and the lower middle portion of a lower fractionating tower are connected into a positive pressure pipe connector and a negative pressure pipe connector of a liquid level meter respectively; 2, the body, between the positive pressure pipe connector and the negative pressure pipe connector, of the lower fractionating tower is connected into a liquid level height detection pipe, and a valve is arranged; 3, when the liquid level meter breaks down, the valve is turned on; when the liquid level height detection pipe discharges gas, a gas and liquid mixture and continuous liquid, it is judged that the liquid level of the lower fractionating tower does not reach the connection end of the liquid level height detection pipe, is at the connection end of the liquid level height detection pipe and is higher than the connection end of the liquid level height detection pipe respectively. The invention further discloses a lower fractionating tower liquid level detection device using the lower fractionating tower liquid level detection method. According to the lower fractionating tower liquid level detection method and device, the liquid level height of the lower fractionating tower can be judged on site.

Description

technical field [0001] The invention relates to a detection technology of a fractionation tower, in particular to a method and a device for detecting the liquid level of a lower tower of a fractionation tower. Background technique [0002] At present, the liquid level measurement of the lower tower of the fractionation tower is remotely displayed, and there is no local high-level detection device for the liquid level. In case of failure of the display instrument, it is impossible to judge the liquid level of the lower tower, which brings difficulties to the operation and affects production adjustment. . Contents of the invention [0003] In order to overcome the deficiencies in the prior art, one of the purposes of the present invention is to provide a method for detecting the liquid level of the lower tower of the fractionating tower, which can judge the liquid level height of the lower tower of the fractionating tower on the spot. [0004] The second object of the prese...

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Problems solved by technology

[0002] At present, the liquid level measurement of the lower tower of the fractionation tower is remotely displayed, and there is no local high-level detection device for the liquid level. In case of failure of the display instrument, it is impossible to judge the liquid level of the lower tower, which brings difficulties to the operation and affects production adjustment.

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