Treating agent for organochlorine-containing waste gas, and preparation method and application thereof

Abstract

The invention provides a treating agent for waste gas containing low-concentration organochlorine as well as a preparation method and application of the treating agent. The treating agent takes lightcalcium carbonate as a main component; oxides of iron, manganese and titanium are added; fibrous calcium sulfate is used as a reinforcing agent; the treating agent has high organochlorine hydrolysis activity and organic component combustion activity, and can achieve dechlorination of organochlorine compounds and catalytic combustion of byproduct chlorine-free organic components under the temperature condition of 300-350 DEG C, so that organochlorine is converted into calcium chloride, carbon dioxide and water, up-to-standard emission is easy to achieve, and the organochlorine conversion capacity and the dechlorination capacity of the treating agent are not affected by carbon dioxide contained in waste gas. The raw materials of the dechlorinating agent are cheap, the cost of the dechlorinating agent is low, and the dechlorinating agent is basically non-toxic and harmless after being used and is easy to scrap and treat. The treating agent for organochlorine-containing waste gas is prepared from the following raw materials in parts by mass: 60 to 80 parts of light calcium carbonate, 10 to 15 parts of ferrous sulfate, 5 to 10 parts of manganese sulfate and 5 to 15 parts of metatitanicacid.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment containing organic chlorine, and in particular relates to a treatment agent for waste gas containing organic chlorine, a preparation method and an application thereof. Background technique [0002] Chlorine-containing organic compounds, also known as organochlorine, are an important class of industrial raw materials, such as chlorinated alkanes and chlorinated aromatics, which are widely used as raw materials for chemical reactions, solvents, or additives for many processing aids; Degradability and toxicity, organic chlorine in waste gas, waste liquid, and waste must be properly treated, transformed, and removed before it can be discharged, disposed or landfilled; among them, the treatment of organic chlorine in waste gas is the most important technical field, because waste liquid, The organochlorine in the waste is driven into the exhaust gas by air stripping and thermal volatilizatio...

AI Technical Summary

Problems solved by technology

[0004] For chlorine such as 500mg / m 3 The common waste gas containing organic chlorine is treated at 250-400°C by using calcium oxide as the main component and adding iron, manganese, copper and other oxides. It is more convenient and easy in many cases. Chlorine in chlorine is transformed into calcium chloride and is trapped in the dechlorination agent, but chlorine-free organic matter generally still exists in the exhaust gas after treatment. When the chlorine-free organic matter exceeds the standard, it still cannot be discharged up to the standard, or further treatment is required to meet the standard emissions; and when the exhaust gas contains carbon dioxide, it will convert calcium oxide into non-alkaline calcium carbonate, or absorb carbon dioxide in long-term storage, resulting in a decrease in the organic chlorine conversion capacity and dechlorination capacity of the dechlorination agent.

Some copper-containing dechlorination agents may also lead to the production of higher chlorinated organochlorines or increase the complexity of organochlorines