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Method for measuring material level of storage tank in production of trichlorosilane

A technology of trichlorosilane and a measurement method, which is applied in the direction of displaying a liquid level indicator through weight measurement, etc., can solve the problems of high daily management and maintenance costs of radioactive sources, unfavorable operator health, and floating dust affecting measurement accuracy, etc., so as to reduce production. Accidents, increased service life, and the effect of improving conversion rates

Inactive Publication Date: 2010-05-12
LESHAN LEDIAN TIANWEI SILICON TECH CO LTD
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Problems solved by technology

Floating dust will affect the detection accuracy of radar level gauges and radar switches, and even make radar level gauges and radar switches not work normally; while γ-ray level gauges and γ-ray level switches also have floating dust that affects measurement accuracy during use. There are also radioactive sources, which are not conducive to the health of operators, and the daily management and maintenance costs of radioactive sources are also high

Method used

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  • Method for measuring material level of storage tank in production of trichlorosilane

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Embodiment

[0033] Attached figure 1 The shown storage tank produces trichlorosilane. The storage tank includes a tank body 1 and a support 4 fixedly connected to the tank body 1. One side of the tank body 1 is provided with a discharge port 5, and the discharge port 5 passes through a metal soft The pipe 2 is connected with the pipeline, and a load cell 7 is arranged under the support 4 , and the load cell 7 is placed on the support device 6 .

[0034] The silicon powder storage tank is a cylindrical container with a diameter of 1.4m. The self-weight of the silicon powder storage tank is 2754kg, and the bulk density of the silicon powder is 1.4g / cm 3 . The reading of the load cell of the silicon powder storage tank is 5000kg, and the level height of the silicon powder is:

[0035] L=m / (Sρ)

[0036] =(5000kg-2754kg) / [3.14*(0.7m) 2 *1.4]g / cm 3

[0037] =1.043m

[0038] That is, the material level of the silicon powder storage tank is 1043mm.

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Abstract

The invention relates to a method for measuring the material level of a storage tank in the production of trichlorosilane, which belongs to the production field of halogenated silicane. The invention solves the technical problem of providing the method for measuring the material level of the storage tank in the production of the trichlorosilane, and the method is free from the interference of floating dust. The method for measuring the material level of the storage tank in the production of the trichlorosilane measures the material level of the storage tank which is connected with a pipeline, and calculates the material level L of a material in the storage tank according to a formula L=m / (Sp) by measuring the total mass m of the storage tank and the material in the storage tank, wherein S is the cross-section area of the storage tank, and p is the stacking density of the material. The method can avoid the influence of the floating dust on a detection result, can measure the material level of the material in the storage tank more accurately, is beneficial to replenishing silicon powder or eliminating silicon dust in time, can effectively reduce the generation of production accidents and has extensive application prospect.

Description

technical field [0001] The invention relates to a method for measuring the material level of a storage tank in the production of trichlorosilane, and belongs to the production field of halogenated silanes. Background technique [0002] In the production of trichlorosilane, it is necessary to track the material level of the silicon powder (dust) storage tank in real time, so as to replenish silicon powder or remove silicon dust in time. If the silicon powder is not replenished in time, the drying time of the silicon powder will be insufficient, which will affect the yield of trichlorosilane, and will also lead to faster corrosion of equipment and increase the frequency of equipment maintenance, which is not conducive to the stable and orderly production. Silicon dust is not timely If it is excluded, it will cause the precipitated silica dust to raise dust and reduce the filtration efficiency of the filter. [0003] At present, the methods for detecting the level of silicon p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/20
Inventor 唐前正张新李钊张尚旻王军郭勇
Owner LESHAN LEDIAN TIANWEI SILICON TECH CO LTD
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