Bromotrifluoromethane residual gas recovery device

Abstract

The invention discloses a bromotrifluoromethane residual gas recovery device, and belongs to the technical field of fire extinguishing agent recovery. The device comprises a gas inlet buffer tank, a metal diaphragm compressor, an exhaust buffer tank, a heat exchanger and a gas storage tank, wherein an inlet and an outlet of the gas inlet buffer tank are respectively connected with an inlet of theresidual gas bromotrifluoromethane tank and an inlet of the metal diaphragm compressor, an outlet of the metal diaphragm compressor is connected with an inlet of the heat exchanger, an outlet of the heat exchanger is connected with an inlet of the exhaust buffer tank, an outlet of the exhaust buffer tank is connected with an inlet of the gas storage tank, the exhaust buffer tank is communicated with the gas storage tank through a communicating pipe, the horizontal height of the bottom of the exhaust buffer tank is greater than that of the top of the gas storage tank, and liquid bromotrifluoromethane flows into the gas storage tank through the liquid level difference. According to the invention, residual bromotrifluoromethane gas in the gas tank can be completely pumped out and then is recycled without leakage, so that the environmental pollution is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agent recovery, in particular to a device for recovering bromotrifluoromethane residual gas. Background technique [0002] The main component of the fire extinguishing agent is halon 1301, the chemical name is bromotrifluoromethane, commonly known as halon, this kind of material has the advantages of high fire extinguishing efficiency, no residue after fire extinguishing, and good insulation. However, because they are greenhouse gases and ozone-depleting substances, according to relevant international treaties and domestic industry regulations, such substances are prohibited from being discharged into the atmosphere. For the above reasons, the fire extinguishing agent in the tank must be recovered and utilized when producing, maintaining and using a fire extinguisher containing bromotrifluoromethane. [0003] The process of bromotrifluoromethane from the manufacturer to the user needs ...

AI Technical Summary

Problems solved by technology

[0003] The process of bromotrifluoromethane from the manufacturer to the user needs to be transferred in a gas tank. When the user uses it, it needs to be extracted from the transferred gas tank, but about 10% of the gas in each tank cannot always be pumped out for use.

[0004] The current recycling method for trifluorobromomethane is to directly connect the gas tank and the recovery tank with a hose, and use the pressure difference in the gas tank to press the remaining trifluorobromomethane into the recovery tank, but this method exists Many defects: 1. The fire extinguisher uses nitrogen pressurization, and nitrogen will also enter the recovery tank during the recovery process, resulting in a decrease in the effective volume of the gas storage tank

2. After the nitrogen gas enters the recovery tank, the internal pressure of the gas storage tank increases, and the remaining part of the gaseous fire extinguishing agent in the fire extinguishing bottle cannot enter the recovery tank

3. During the recycling process, the pressure in the recovery tank gradually decreases, and part of the fire extinguishing agent will become gaseous. In order to continue recycling, the pressure in the recovery tank has to be released to the outside, which will inevitably cause the fire extinguishing agent to be released into the atmosphere and cause damage to the atmosphere. Pollution

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