Integrated device and system for propellant waste gas treatment, and use thereof

Abstract

The invention discloses an integrated device for propellant waste gas treatment, and discloses a system and method for propellant waste gas treatment by using the integrated device. The integrated device comprises a gas-liquid contact section, a static washing section and an ultra-gravity process intensification section. When the device is used for propellant waste gas treatment, the propellant waste gas is forced into the device through a fan for three-section treatment, and the treated gas is discharged through a gas outlet while the liquid is circulated into a rotary packing rotor from thebottom of the device; and the absorption liquid can be supplemented by a liquid supplementing tank. The device can ensure efficient separation and achieve good removal effect by integration of three sections of treatment; moreover, by the integration of the device, pipe laying is reduced and gas pressure drop is decreased, thereby reducing the weight and the size of the device to the maximum extent and greatly facilitating skid-mounting and vehicle-mounting. Furthermore, an oxidizing agent is added to remove the byproduct nitrite substances, so that the content of nitrite substances in wastewater meets public wastewater treatment requirements.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment. More specifically, it relates to an integrated device, system and application for propellant exhaust gas treatment. Background technique [0002] Liquid propellants are widely used in the aerospace field due to their fast chemical reaction, high specific impulse, and easy storage. Among the commonly used liquid propellants, dinitrogen tetroxide (N 2 o 4 ) / unsymmetrical dimethylhydrazine ((CH 3 ) 2 N 2 h 2 ) The two-component liquid propellant is the most widely used. However, after propellant transfer and filling, system air tightness inspection and engine test run, a large amount of exhaust gas will be discharged. Among them, dinitrogen tetroxide (N 2 o 4 ) will volatilize into gaseous dinitrogen tetroxide (N 2 o 4 ), nitrogen dioxide (NO 2 ) and nitrogen (N 2 ), if not treated, will form highly toxic yellow smoke in the air; unsymmetrical dimethylhydrazine ((CH 3 ) ...

AI Technical Summary

Problems solved by technology

[0004] (1) The reaction efficiency of the absorption tower is low, and the removal effect of the exhaust gas by using a single-stage absorption tower is not ideal, and multi-stage series connection is required to achieve efficient absorption, which greatly increases the space occupied by the equipment, and the tower equipment cannot meet the vehicle-mounted requirements. Requirements, poor flexibility and low operating flexibility, so the use of skid-mounted hypergravity reactors will effectively solve this problem

[0005] (2) The use of an independent high-gravity reactor can only treat the waste gas once. In order to ensure the effect of waste gas removal, a static mixer and a gas-liquid separation system need to be added. The liquid needs to be driven by its own gravity in the high-gravity reactor and static mixing. Flow between the filter and the gas-liquid separation system

[0006] (3) The gas pressure drop is large, which increases the energy consumption of the process

However, side reactions are easily produced during the reaction process, and the by-products are mainly toxic nitrous acid substances, and the absorption liquid cannot process the generated nitrous acid substances, thus easily causing secondary pollution

Images