Rapid gas hybrid reactor for high temperature cracking and application thereof

Abstract

The invention relates to a rapid gas hybrid reactor for high temperature cracking and an application thereof. Two types of gases are transported by a concentric bilayer circular tube, one type of the gas is transported by an inner tube, the other type of the gas is transported by a tube annular space between an outer tube and the inner tube, and the two types of the gases can be subject to mutualtemperature regulation in the transportation process, the gases are pre-tempered; and one type of the gas is transported to the inner turbine of a mixing nozzle by the inner tube, the other type of the gas is transported to the annular turbine of the mixing nozzle by the tube annular space between the outer tube and the inner tube, the rotation direction of the turbine blades of the inner turbineand the annular turbine are opposite so as to lead the rotation direction of the two types of the gases to be opposite, thus generating a huge velocity difference to cause large shear force, intensive turbulence, small resistance loss and high hybrid speed, and enabling the two types of the gases to be evenly mixed instantly and then enter in a reaction tube for reaction immediately. The gases are mixed in the mixing nozzle and directly enter the reactor for reaction, thus a mixing section is not required to be additionally arranged.

Description

technical field [0001] The invention relates to a gas rapid mixing reaction device and its application, which is especially suitable for high-temperature pyrolysis gas, and belongs to the technical field of chemical gas rapid mixing. Background technique [0002] In the field of chemical production, there are often systems in which two or more gases are quickly mixed and reacted. At this time, the mixing speed and uniformity of the reaction gases have an important impact on the reaction conversion rate, selectivity and subsequent processes. Therefore, how to The rapid and uniform mixing of the two gases has become an urgent problem to be solved in chemical production. [0003] For example, in the process of preparing tetrafluoroethylene by cracking difluorochlorofluoromethane and high-temperature steam, dichlorofluoromethane is cracked after being fully mixed with steam at 1000°C to reach the cracking temperature. Dichlorofluoromethane and steam The time for the cracking re...

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Problems solved by technology

[0004] Chinese patent CN1049110A discloses a gas rapid mixing device, which uses the impact of the jet and the porous plate to generate strong main body diffusion and turbulent flow diffusion, thereby realizing rapid mixing between gas materials, but it is difficult to achieve effective main body diffusion by using a single-tube jet The effect, so that the mixing uniformity of the gas material is low, and the reaction is not sufficient

Chinese patent CN1468651A discloses a high-uniformity gas jet flow rapid mixing device, but the pressure loss of this device is large, and the porous distribution plate is easily blocked in some reaction systems

Chinese patent CN1176148A discloses a fluid mixer, the fluid must flow through a series of mixing chambers, and there are thin tubes at both ends of the mixing chambers, which can achieve uniform mixing, but cannot meet the instantaneous and rapid mixing of fluids

U.S. Patent No. 4,865,820 discloses a method for mixing ethane and chlorine, but the equipment has high technical requirements and complex structure

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