Mass flowmeter scale application in liquid chlorine filling measurement

Abstract: the mass flowmeter scale in the application of liquid chlorine filling measurement information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. It is well known that the filling of liquid chlorine is a complicated process. Because of the special physical and chemical properties of liquid chlorine, makes the filling flow measuring accuracy is not high, which is a prominent problem in the field of flow measurement. In this paper, combined with the years. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a mass flowmeter scale in the application of liquid chlorine filling measurement article details. It is well known that the filling of liquid chlorine is a complicated process. Because of the special physical and chemical properties of liquid chlorine, makes the filling flow measuring accuracy is not high, which is a prominent problem in the field of flow measurement. This paper for many years in the process of liquid chlorine filling measurement using the experiences and lessons from the mass flowmeter, and puts forward some Suggestions for the measurement of the liquid chlorine filling, for peer reference. Keywords liquid chlorine metering, filling mass flowmeter I company produces the HC series of coriolis force mass flowmeter, since 2011, part of the five provinces in domestic chlor-alkali industry in the process of liquid chlorine filling measurement applications. Now some bits of experience in the use of it is introduced as follows, reference for the same industry and the vast number of users: 1, in the process of liquid chlorine filling flow measuring the significance of the liquid chlorine is a kind of green and yellow transparent liquid, grouping them become Cl2 & gt; 96% ( vol） H2O< 0. 015% ( wt） 。 Relative density 1. 468 ( 0℃） And the boiling point - 34. 5 ℃, melting point - 100. 98 ℃, the molecular weight of 70. 91. Pressure is vaporized into gas, 300 l can be obtained after 1 kg of liquid chlorine vaporizing gas chloride ( Dry chlorine gas) 。 Has strong stimulation with choking smell, smelly and corrosion resistance. Any liquid chlorine container, the filling coefficient shall not exceed 80%. As liquid chlorine began to enter the container when the temperature is low, such as 38 ℃, the pressure of 1. 0Mpa. g。 If liquid chlorine is still flow state, because the liquid chlorine absorption external heat from the air keeps the temperature rising, and vaporize the volume expansion; If the liquid chlorine in the container is full, there is no free space to allow its expansion, but also has the nature of the incompressible liquid, the liquid chlorine as temperatures rise will produce a great pressure, which makes blasting. If the liquid chlorine container is full, can't free expansion, when the temperature rose to 50 ℃, pressure can reach 50 mpa. g。 This will be much more than the general pressure vessel can allow under pressure. Liquid chlorine steel cylinder should abjure filling coefficient of more than 80%, the design of liquid chlorine tank temperature is 50 & quot; C。 Liquid chlorine tank filling with phase change, is an endothermic process. General filling temperature below room temperature. The gas phase space is smaller. Temperature rise will cause pressure increases when the saturated vapour pressure of internal pressure rise will not rise. High pressure tank car tanks have the danger of explosion. For liquid chlorine container and fill with strict rules, and a *, fire protection, safety and other departments, strict supervision and inspection on the transportation of excessive filling penalties are considerable. To this end, the real-time monitoring at the liquid chlorine filling, prevent excessive filling. Once found when weighing too much filling, punishment and discharge the need of human, material and financial resources loss. Thus, liquid chlorine measurement is very important in the process of filling. 2, the error analysis in the process of liquid chlorine tank filling 2. 1 the error of liquid chlorine tank filling device itself so far, the flowmeter is only used in the filling device of liquid chlorine tank car. Processing production and tank filling device is basically done by the users themselves. As a result, each user filling device structure, control part and the valve design, selection of flowmeter installation position will vary. Although the flowmeter metering precision is higher. But, by the reason of the error is much larger than the error of the meter itself. Such as: as the user chooses the valve of pneumatic and electric, also have a manual. When filling at the beginning if the valve open speed too fast, can cause the pressure of liquid chlorine before valve fell sharply, to produce liquid chlorine vaporization phenomenon above is all there is in this article, you are welcome to inquire me factory flowmeter selection, quotation, etc.
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