Trifluoropropene recycling device and recycling method

Abstract

The invention discloses a trifluoropropene recycling device and a recycling method. The recycling device comprises an open-piston compressor 1, a gas storage tank 2, a pneumatic valve for circulation 3, a control cabinet 4, an adsorption system 5, a refrigerator 6 and a liquid storage tank 7, wherein a gas inlet of the open-piston compressor 1 is used as a waste gas inlet; a gas outlet of the open-piston compressor 1 is connected to a gas inlet of the gas storage tank 2; a gas outlet of the gas storage tank 2 is connected to a gas inlet of an aluminum plate fin evaporator 61; a gas outlet of the aluminum plate fin evaporator 61 is connected to the adsorption system 5; one path of adsorbed gas is discharged as clean gas; the other path of the adsorbed gas is introduced into a pressurizing part through the waste gas inlet of the pneumatic valve for circulation 3. The recycling method comprises the following steps: pressing the gas, then liquefying and separating the gas by the refrigerator and adsorbing by the adsorption system; circulating the separated trifluoropropene-rich gas to the waste gas inlet again for pressurizing, and finally discharging clean gas. According to the trifluoropropene recycling device and the recycling method, the refrigerating system is simplified; the energy efficiency ratio of the refrigerating system and the whole recycling device is increased; the trifluoropropene recycling efficiency is greatly improved.

Description

technical field

[0001] The invention relates to the liquefaction technology of trifluoropropene, in particular to a trifluoropropene condensation and adsorption recovery device and a corresponding recovery method. Background technique

[0002] In chemical engineering, trifluoropropylene is mainly used as the basic raw material of high-performance molecular materials such as fluorosilicone rubber and fluorosilicone oil, and can be polymerized by itself or copolymerized with trifluoropropylene-based monomers as fluorine-containing compounds. In addition, it can be used as intermediates, aerosols, refrigerants, etc. in the production of pesticides and pharmaceuticals. During the production, handling, storage and transportation of trifluoropropene, a large amount of free trifluoropropene will escape, resulting in a large amount of trifluoropropene waste emissions. The existing commonly used treatment methods for trifluoropropene mainly include: catalytic oxidation, adsorption, ...

Examples

Embodiment Construction

[0015] like figure 1 As shown, a kind of trifluoropropene recovery device of the present invention includes an open piston compressor 1, an air storage tank 2, a pneumatic valve 3 for circulation, a control cabinet 4, an adsorption system 5, a refrigerator 6, and a liquid storage tank 7. Open the air inlet of the piston compressor 1 as the exhaust gas inlet, open the air outlet of the piston compressor 1 and connect it to the air inlet of the air storage tank 2, and connect the air outlet of the air storage tank 2 to the aluminum plate-fin evaporator 61 The air inlet of the aluminum plate-fin evaporator 61 is connected to the adsorption system 5, and the gas after adsorption is discharged as clean gas all the way, and enters the pressurized part from the waste gas inlet through the pneumatic valve 3 for circulation.

[0016] The refrigerator 6 includes a piston refrigeration compressor 62, a high-efficiency oil separator 63, an air-cooled condenser 64, an expansion valve 65, a...

technical field

[0001] The invention relates to the liquefaction technology of trifluoropropene, in particular to a trifluoropropene condensation and adsorption recovery device and a corresponding recovery method. Background technique

[0002] In chemical engineering, trifluoropropylene is mainly used as the basic raw material of high-performance molecular materials such as fluorosilicone rubber and fluorosilicone oil, and can be polymerized by itself or copolymerized with trifluoropropylene-based monomers as fluorine-containing compounds. In addition, it can be used as intermediates, aerosols, refrigerants, etc. in the production of pesticides and pharmaceuticals. During the production, handling, storage and transportation of trifluoropropene, a large amount of free trifluoropropene will escape, resulting in a large amount of trifluoropropene waste emissions. The existing commonly used treatment methods for trifluoropropene mainly include: catalytic oxidation, adsorption, ...

Examples

Embodiment Construction

[0015] like figure 1 As shown, a kind of trifluoropropene recovery device of the present invention includes an open piston compressor 1, an air storage tank 2, a pneumatic valve 3 for circulation, a control cabinet 4, an adsorption system 5, a refrigerator 6, and a liquid storage tank 7. Open the air inlet of the piston compressor 1 as the exhaust gas inlet, open the air outlet of the piston compressor 1 and connect it to the air inlet of the air storage tank 2, and connect the air outlet of the air storage tank 2 to the aluminum plate-fin evaporator 61 The air inlet of the aluminum plate-fin evaporator 61 is connected to the adsorption system 5, and the gas after adsorption is discharged as clean gas all the way, and enters the pressurized part from the waste gas inlet through the pneumatic valve 3 for circulation.

[0016] The refrigerator 6 includes a piston refrigeration compressor 62, a high-efficiency oil separator 63, an air-cooled condenser 64, an expansion valve 65, a...

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