Leakage self-rescue container for stocking danagerous chemicals

Abstract

A rescue device for treating leakage of dangerous chemical includes g a first container having a closed negative pressure chamber and an intake which allows outside dangerous chemicals to enter the first container, and a second container installed and fixed in the first container. The second container contains a substantially harmless liquefied gas and has an opening which controllably communicates with the external environment. When the dangerous chemicals are leaking, the rescue device can be used to reduce the loss of dangerous chemical, alleviate the harm to the environment and human, and avoid the possible disastrous consequences.

Description

TECHNICAL FIELD[0001]The present invention relates to a container for stocking dangerous chemicals, in particular, to a leakage self-rescue container for stocking dangerous chemicals.BACKGROUND ART[0002]Chemicals are indispensable to the industrial production and the people's living. Moreover, most of the chemicals are dangerous chemicals, in which most of them are fluids including gasses and liquids, especially liquids with low boiling points. During the production, storage, transportation and use of dangerous chemicals, leakage problems sometimes occur due to the aging of a container, high temperature and accidents, which will lead to the harm to the environment and even result in disastrous consequences. Prompt and effective self-rescue will gain more valuable time for rescue and therefore it will be more possible to reduce the harm and avoid the disastrous consequences.SUMMARY OF INVENTION[0003]When fluid dangerous chemicals leak, it is key on how to reduce the pressure of the s...

AI Technical Summary

Benefits of technology

[0003]When fluid dangerous chemicals leak, it is key on how to reduce the pressure of the storage container and increase the viscosity of dangerous products in order to reduce the leakage rate, decrease the total amount of leakage pollution, reduce difficulty of rescue and gain more time for rescue.

[0007]Where the dangerous chemicals in the first container leak due to accidents or the first container is threatened by high temperature, the temperature in the first container decreases and thereby the pressure in the first container reduces by releasing the liquefied gas in the second container so as to avoid the leakage or explosion of the first container caused by overpressure, or to increase the viscosity of the dangerous chemicals to reduce the leakage rate when the leakage occurs so that it can obtain valuable time for more effective rescue.

[0010]A second container is installed in the first container. The second container contains a substantially harmless liquefied gas. Where the dangerous chemicals in the first container leak due to accidents or the first container is threatened by high temperature, the liquefied gas can be released in the form of gas from the second container by opening a vent valve on the second container. The release of the liquefied gas absorbs the heat of the surrounding environment (i.e. the first container) so that the temperature of the container decreases and thereby the pressure in the first container reduces so as to avoid the leakage or explosion caused by overpressure, or to increase the viscosity of the dangerous chemicals to reduce the leakage rate when the leakage occurs and to obtain valuable time for more effective rescue.

[0012]The liquefied gas in the second container can be selected from a gas, of which the critical temperature is above the ambient temperature and which is substantially harmless to environment and human. The liquefied gas is a gas under the air pressure at the ambient temperature, but it is a liquid under pressure at the ambient temperature. Where the leakage self-rescue container is not used, the second container is under pressure and the gas is maintained as a liquid. However, during usage, the second container communicates with the outside and the liquefied gas is gasified and absorbs the environmental heat. Preferably, the liquefied gas is liquid carbon dioxide, which is readily available and inexpensive.

[0017]When the liquefied gas of the present invention is selected to be liquid carbon dioxide, a person skilled in the art knows how to arrange the openings of the second container so as to prevent dry ice formed during the gasification of liquid carbon dioxide from blocking the openings.

[0018]The container of the present invention can be used as a storage container for producing, stocking, transporting and using liquid dangerous chemicals. It can reduce the security risks for producing, stocking, transporting and using liquid dangerous chemicals including more dangerous gasses and fluids, especially dangerous chemical fluids with low boiling points.

Problems solved by technology

Moreover, most of the chemicals are dangerous chemicals, in which most of them are fluids including gasses and liquids, especially liquids with low boiling points.

During the production, storage, transportation and use of dangerous chemicals, leakage problems sometimes occur due to the aging of a container, high temperature and accidents, which will lead to the harm to the environment and even result in disastrous consequences.

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