Tester for measuring degassing rate of dangerous chemical under condition of meeting water

Abstract

The invention relates to a tester for measuring the degassing rate of a dangerous chemical under the condition of meeting water. A nitrogen steel bottle is connected with a first pressure reducing valve, an electromagnetic valve and a pressure sensor in turn through a pipeline; the tail end of the pipeline is communicated with a first neck of a three-neck flat-bottomed flask of a reaction flask; an infusion pump is connected in a second neck of the three-neck flat-bottomed flask of the reaction flask through a pipeline and is connected with a liquid storage bottle; the electromagnetic valve is connected in a third neck of the three-neck flat-bottomed flask of the reaction flask through a pipeline; a second electromagnetic valve is connected with a gas purifying device; the gas purifying device is connected with a gas flow meter; the gas flow meter is connected with a catalytic combustion gas sensor; and a computer control terminal is connected with the pressure sensor, the infusion pump and the gas flow meter. The tester realizes automatic data acquisition and processing operation, quickly identifies the inflammability of gas released by a dangerous substance through reaction with the water through the catalytic combustion gas sensor, provides safety information for processing the gas produced in the experiment process, and assists in classifying and identifying the danger of a substance which can release inflammable gas when the substance meets to react with the water.

Description

technical field [0001] The invention relates to a chemical reaction kinetics tester, in particular to a tester for measuring the degassing rate of dangerous chemicals when they meet water. technical background [0002] Among chemicals, certain substances may react and release gas when they come into contact with water. These gases may form explosive compounds when mixed with air, and are easily ignited and exploded. The shock waves and flames generated may cause harm to the operator and the surrounding The environment poses a hazard. In addition, chemicals that release gas when in contact with water, especially those that release flammable gases when in contact with water, must be treated differently in the field of fire fighting, otherwise not only the fire cannot be extinguished in time, but it may cause greater harm during the fire extinguishing process. [0003] In the early days, the water-absorbing test instrument was mainly carried out by manual measurement and balan...

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Problems solved by technology

[0002] Among chemicals, certain substances may react and release gas when they come into contact with water. These gases may form explosive compounds when mixed with air, and are easily ignited and exploded. The shock waves and flames generated may cause harm to the operator and the surrounding environmental hazard

In addition, chemicals that emit gas when in contact with water, especially those that emit flammable gas when in contact with water, must be treated differently in the field of fire fighting, otherwise not only the fire cannot be extinguished in time, but it may cause greater harm during the fire extinguishing process

[0003] In the early days, the water-absorbing test instrument was mainly carried out by manual measurement and balance weighing data processing methods, such as the experimental instrument reported in the utility model patent CN2490569Y. The amount of gas generated by the reaction with water is small, which is not enough to generate enough pressure to discharge the water of the corresponding quality, resulting in test errors; although the later water gas release tester uses a flow meter to monitor and measure the gas flow, the addition of water needs to be done manually during the test. The operation and test operation are relatively cumbersome. In addition, the release of flammable gas in contact with water is directly discharged without treatment, and the dead volume of the reaction vessel and gas pipeline makes the flammable gas released later cannot be completely discharged from the reaction bottle. These factors will increase Harm of the test to the operator and the surrounding environment

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