Freon treated by premixed combustion and method for producing said resource

Abstract

This invention relates to one method to pre-mix fuel for chlorofluoromethane and its materials, which comprises the following steps: mixing the reactor chlorofluoromethane, water, fuel and air for heating up to improve reaction molecule energy and to improve fuel heating speed; mixture gas pre-heating makes burst furnace temperature lift helpful for back reactions; using fuel tail fuel gas and air to improve flare transmission speed and temperature to add burst intensity and to improve device heat efficiency.

Description

1. Technical field [0001] The invention relates to a method for premixed combustion treatment of freon and its resource recovery, which belongs to the technical field of metallurgy and chemical industry. 2. Background technology [0002] Freon (CFCs) is a large-scale industrial production of compounds containing four elements of fluorine, chlorine, carbon, and hydrogen or only three elements of fluorine, chlorine, and carbon. Its chemical properties are very stable, non-toxic or low-toxic, and non-corrosive Non-combustible, mostly non-flammable, widely used in refrigerants, foaming agents, sprays, cleaning agents and other fields. However, it is precisely because of their excellent stability that they are difficult to degrade after being discharged into the atmosphere. When they rise to the stratosphere, under the action of ultraviolet rays, they will produce catalytic species that can decompose ozone molecules, thereby destroying the ozone layer. They not only destroy the ...

AI Technical Summary

Problems solved by technology

On the one hand, the mixing of the reactant and the combustion flame is greatly affected under this condition, and the direct injection of cold to-be-processed material makes the flame stability worse, and these factors will directly lead to the instability of the decomposition rate of Freon; on the other hand On the one hand, although the idea of ​​spraying the reactants to the burning flame is simpler, the reactants do not participate in the process of fuel heating to combustion, and the time of the reactants in the high temperature zone is greatly shortened, which is beneficial for the reactant molecules to obtain energy. The activation process is extremely unfavorable. In order to achieve a higher decomposition rate, more fuel must be supplied, which wastes precious energy.

[0003] In addition, the patent document CN1049295A discloses a catalytic decomposition method of chlorofluoroalkanes, which uses a catalyst containing alumina or alumina-silicon dioxide, which can decompose Freon at a relatively low temperature and in the presence of water vapor, but The serious problem of this method is that the life of the catalyst is very short, and the hydrogen fluoride produced by the decomposition of freon has a strong fluorination effect on the aluminum oxide, causing the catalyst to be obviously deactivated within a few hours; and when the treatment content is higher than 5% When freon gas is used, the selectivity of the reaction to generate carbon dioxide is greatly reduced, and the decomposition of freon is not complete, which is also a common problem in the current catalytic decomposition of freon

Images