Negative-pressure incineration disposal system and negative-pressure incineration disposal method for fluorine-containing organic waste liquid and exhaust gas

Abstract

The invention provides a negative-pressure incineration disposal system and a negative-pressure incineration disposal method for fluorine-containing organic waste liquid and exhaust gas. The negative-pressure incineration disposal system comprises an incinerator, a fluorine-containing organic waste liquid and exhaust gas supply system, a fuel supply system, a negative-pressure air supply system, a flue gas chilling and HF (hydrogen fluoride) recycling system and an alkali cleaning system. The negative-pressure incineration disposal method includes respectively and simultaneously feeding the fluorine-containing waste liquid and exhaust gas into combustion chambers of the incinerator; enabling the fluorine-containing waste liquid and exhaust gas to carry out high-temperature decomposition reaction at the 1100-1200 DEG C reaction temperature of the inside of the incinerator, under the -50Pa pressure of the inside of the incinerator and in the presence of oxygen; filling H<2> or CH<4> into the incinerator to promote redundant organic fluorine to be converted into inorganic hydrogen fluoride so as to guarantee that all the organic fluorine is converted into inorganic hydrogen fluoride ultimately; treating reaction products discharged from the combustion chambers of the incinerator and then discharging the treated reaction products into the atmosphere via a chimney. The negative-pressure incineration disposal system and the negative-pressure incineration disposal method have the advantages that the parameter adjustment quantity and parameter adjustment links are reduced, operation is facilitated, and long-period stable production running can be maintained.

Description

technical field [0001] The invention relates to a pollution-free treatment system and method for fluorine-containing organic waste liquid and waste gas, in particular to a negative pressure incineration treatment system and method for fluorine-containing organic waste liquid and waste gas. Background technique [0002] At present, the main method of domestic treatment of fluorine-containing organic waste liquid and waste gas is to add limestone to the waste water for alkali washing, etc. This type of method will produce a large amount of saline waste water, and at the same time, the treatment effect on organic fluorine-containing waste liquid is not obvious , easy to cause secondary pollution; the use of chemical coagulation sedimentation method to treat fluorine-containing organic wastewater is only suitable for wastewater with low concentration and small fluctuations in fluorine concentration in wastewater; microbial treatment of fluorine-containing organic wastewater is st...

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Problems solved by technology

[0002] At present, the main method of domestic treatment of fluorine-containing organic waste liquid and waste gas is to add limestone to the waste water for alkali washing, etc. This type of method will produce a large amount of saline waste water, and at the same time, the treatment effect on organic fluorine-containing waste liquid is not obvious , easy to cause secondary pollution; the use of chemical coagulation and sedimentation to treat fluorine-containing organic wastewater is only suitable for wastewater with low concentration and small fluctuations in fluorine concentration in wastewater; microbial treatment of fluorine-containing organic wastewater is still in the laboratory stage and has not yet been established. There have been public reports on industrialization

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