Method and device for removing carbon deposit in quench cooler of hexafluoropropylene reaction equipment

Abstract

The invention discloses a device for removing carbon deposit in a quench cooler of hexafluoropropylene reaction equipment. Upper control ends (1) of a plurality of upper ultrasonic vibration devices (14) are connected with an upper controller (2), the plurality of upper ultrasonic vibration devices (14) are uniformly installed on the outer surface of a top cover (4) of a quench cooler (3), and lower control ends (5) of a plurality of lower ultrasonic vibration devices (15) are connected with a lower controller (6). The plurality of lower ultrasonic vibration devices (15) are uniformly installed on the outer surface of a bottom cover (7) of the quench cooler (3). The invention provides a method for removing the carbon deposit in the quench cooler. By means of ultrasonic signals sent through an upper ultrasonic probe (10) and a lower ultrasonic probe (12), carbon powder on the pipe wall of a vertical pipe (8) of the quench cooler (3) cannot be adsorbed, and therefore falling autopolymer carbon powder is uniformly collected into a dust complementing and collecting device (9). Continuous operation of the system flow of the hexafluoropropylene reaction equipment is achieved.

Description

technical field [0001] The invention belongs to the technical field of organic fluorine chemical production, in particular to a method and device for removing carbon deposits in a quencher of a hexafluoropropylene reaction equipment. Background technique [0002] Hexafluoropropylene (English name Hexafluoropropene, referred to as HFP), molecular formula CF 3 CFCF 2 , is one of the basic raw materials of the organic fluorine industry, its importance is second only to tetrafluoroethylene, it is the comonomer of many fluorine-containing copolymers, and it is also the intermediate of many fluorine-containing compounds. There are many ways to prepare hexafluoropropylene, and the thermal cracking route of tetrafluoroethylene is widely used in industrialization to produce hexafluoropropylene, which has the advantages of simple process and high product purity. The process and principle of thermal cracking of tetrafluoroethylene to produce hexafluoropropylene are as follows: Tetraf...

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Problems solved by technology

But there is still carbon powder adsorbed on the quench cooler. If the carbon deposits on the current quench cooler are not cleaned for a long time, the accumulated carbon powder will easily block the heat exchange tube, thereby reducing the gas phase flow rate in the reaction equipment and increasing the reaction residence time. It affects the efficiency and selectivity of the reaction, but disassembling the quencher for cleaning will not only increase the workload, but also the octafluoroisobutene produced in the quencher will be highly toxic, resulting in an increased risk of maintenance

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