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Dangerous liquid metering system and metering and conveying method

A liquid measurement and dangerous technology, applied in the direction of volume measurement instruments/methods, liquid/fluid solid measurement, measurement capacity, etc., can solve the problems of high flammability, difficulty in ensuring accurate safety risks, etc., and achieve the effect of high-precision measurement and transportation

Pending Publication Date: 2017-05-31
苏州阿洛斯环境发生器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the same time tert-butyllithium is a highly flammable and dangerous substance
At present, in many cases, its measurement operation is performed manually by experienced personnel, which is difficult to ensure accuracy and has great safety risks.

Method used

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  • Dangerous liquid metering system and metering and conveying method
  • Dangerous liquid metering system and metering and conveying method
  • Dangerous liquid metering system and metering and conveying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The dangerous liquid substance to be metered and transported is liquid yellow phosphorus (density about 1.73g / ml), and the protective fluid is deionized water (density about 1.0g / mL). Since the density of liquid yellow phosphorus is much higher than that of deionized water, when the two coexist, the water will float on it to isolate the air from the yellow phosphorus.

[0050] Such as figure 1 As shown, the system includes protection fluid storage tank 1, metering pump 2, safety valve 3, metering container 4, heating jacket 5, overflow valve 6, temperature, liquid level and pressure transmitter module 7, heating device 8. The three-way valve 9 and the first one-way valve 10;

[0051] The workflow of this system is as follows:

[0052] (1) The overflow valve 6 is opened, and the three-way valve 9 is closed;

[0053] (2) The user injects deionized water about 1 / 4 of its volume into the metering container 4;

[0054] (3) the user puts the yellow phosphorus into the met...

Embodiment 2

[0060] The dangerous liquid substance to be metered and transported is tert-butyllithium (density about 0.66g / ml), and the protective fluid is argon (density about 1.78mg / mL). Since the density of liquid tert-butyl lithium is much greater than that of argon, when the two coexist, argon will float on it to isolate the air from tert-butyl lithium.

[0061] Such as figure 2 As shown, the liquid metering system includes a protective fluid storage tank 1, a gas filter 11, a mass flow meter 12, an electromagnetic stop valve 13, a second one-way valve 14, a safety valve 3, a metering container 4, and a heating jacket 5 , overflow valve 6, temperature, liquid level and pressure transmitter module 7, heating device 8, three-way valve 9 and first one-way valve 10.

[0062] The workflow of this system is as follows:

[0063] (1) The overflow valve 6 is opened, and the three-way valve 9 is closed;

[0064] (2) A certain amount of argon gas is injected into the metering container 4 by ...

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Abstract

The invention discloses a dangerous liquid metering system and a metering and conveying method. The dangerous liquid metering system comprises a metering container, a protection fluid storage tank and a fluid metering and conveying device, wherein the top part of the metering container is provided with a protection fluid inlet and an overflow outlet; an overflow valve is arranged at the overflow outlet; the fluid metering and conveying device is used for metering and conveying dangerous liquid or protection fluid; the bottom part of the metering container is provided with a dangerous liquid outlet, and the exterior of the metering container is provided with a heating system for heating the metering container. The dangerous liquid metering system has the advantages that the dangerous liquid can be metered and conveyed; under the condition of avoiding the dangerous liquid touching air, the high-accuracy metering and conveying can be realized; the system can be widely applied to the fields of analysis and synthesis of yellow phosphor, tert-butyllithium, and other highly flammable matters, and the like.

Description

technical field [0001] The invention relates to a liquid metering system, in particular to a dangerous liquid metering system and a metering delivery method. Background technique [0002] Usually our liquid metering and delivery system works under atmospheric conditions, but liquids with some dangerous substances cannot come into contact with any air. [0003] For example, liquid yellow phosphorus will spontaneously ignite rapidly once it comes into contact with air, causing serious accidents. Yellow phosphorus is an important basic chemical raw material, and its measurement has a great impact on the raw material consumption and economic calculation of various phosphorus chemical products. The traditional method is to cool the yellow phosphorus into a solid state and use barrels as a unit for packaging. The sampling method mainly relies on "sight and quick hands". The operation is complicated and the measurement accuracy is low. Guizhou Jianfeng Chemical has invented a con...

Claims

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Application Information

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IPC IPC(8): G01F22/02G01D21/02
CPCG01D21/02G01F22/02
Inventor 柯锐
Owner 苏州阿洛斯环境发生器有限公司
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