Rapid gas hybrid reactor for high temperature cracking and application thereof

A reaction device and gas technology, applied in chemical methods for reacting gas medium with gas medium, mixers, feeding devices, etc., can solve the problems of large pressure loss, complex structure, insufficient reaction, etc., and achieve fast mixing speed , The effect of small resistance loss

Active Publication Date: 2011-03-02
SHANDONG DONGYUE POLYMER MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Rapid gas hybrid reactor for high temperature cracking and application thereof
  • Rapid gas hybrid reactor for high temperature cracking and application thereof
  • Rapid gas hybrid reactor for high temperature cracking and application thereof

Examples

Experimental program
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Embodiment 1

[0027] Reaction gas: water vapor and chlorodifluoromethane; the inlet of the gas delivery pipe is connected with the heating furnace, and the outlet of the reaction pipe is connected with the quencher.

[0028] A gas rapid mixing reaction device for pyrolysis, comprising a gas delivery tube, a mixing nozzle and a reaction tube 11; the gas delivery tube communicates with the reaction tube 11 through the mixing nozzle; it is characterized in that the gas delivery tube is a Concentric double-layer circular tube, divided into delivery inner tube 2 and delivery outer tube 1;

[0029] The mixing nozzle includes a concentric double-layer circular tube, which is divided into a nozzle inner tube 10 and a nozzle outer tube 9; The pipe annulus between is provided with annular turbine 6, and the rotation direction of inner turbine 5 and annular turbine 6 is opposite; The outer edge of turbine sheet 7 of inner turbine is fixedly connected with the inner wall of nozzle inner pipe 10; The ou...

Embodiment 2

[0035] Utilize the process steps of the preparation tetrafluoroethylene of the gas rapid mixing reaction device described in embodiment 1 to mix water vapor and difluorochloromethane:

[0036] 1) The superheated steam at 950°C enters the annular turbine 6 of the mixing nozzle through the pipe annulus formed by the inner pipe 2 and the outer pipe 1, and the flow rate is 1.5m 3 / s; 450°C difluorochloromethane enters the inner turbine 5 of the mixing nozzle from the delivery inner pipe 2, and the flow rate is 0.25m 3 / s;

[0037] 2) The superheated steam spins out through the annular turbine 6, and the difluorochloromethane spins out through the inner turbine 5, and the two gases spin out at opposite angles, and enter the reaction tube 11 after being fully mixed;

[0038] 3) After the water vapor and chlorodifluoromethane in step 2) are fully reacted in the reaction tube 11, they are cooled by quenching air, deacidified, dehydrated and washed to obtain tetrafluoroethylene.

[0...

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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...

Claims

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Application Information

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IPC IPC(8): B01J12/00B01F5/06B01J4/00C07C17/269C07C21/185
Inventor 夏俊孟章富
Owner SHANDONG DONGYUE POLYMER MATERIAL
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