Low-concentration sodium-salt-containing organic waste liquid incinerator, incineration system and incineration process

Abstract

The invention relates to a low-concentration sodium-salt-containing organic waste liquid incinerator which comprises a burner, a vertical down-fired incineration chamber, a first transition section, agas-solid separation sedimentation chamber, and a dome-shaped convection chamber. The invention also relates to an incineration system comprising the above incinerator, the system further comprises awaste liquid pump, a gasifier, an electric dust remover, an induced draft fan, a chimney and a steam pocket, and the incinerator is orderly connected to the electric dust remover, the induced draft fan and the chimney through an incineration smoke outlet. The low-concentration sodium-salt-containing organic waste liquid incinerator also comprises an incineration process with the use of the aboveincineration system. According to the invention, most water in superheated steam gasified organic waste liquid and light component organic waste liquid produced in incineration gas are used, the technologies of melt slag tapping (sodium peroxide), conversion of sodium peroxide to sodium carbonate, gas and solid settling separation, solid particle deactivation and settling separation, equipment (dust blower) cleaning and manual descaling are combined, the inspection and maintenance cycle of equipment is extended, and the economical sodium-salt-containing incineration treatment method with the recovery of waste heat by-product steam which cannot be stably operated becomes possible.

Description

technical field [0001] The invention relates to the fields of fine chemical industry and petrochemical industry, in particular to a low-concentration sodium salt-containing organic waste liquid incinerator, an incineration system and an incineration process. Background technique [0002] Incineration is an effective means for chemical plants to deal with toxic and hazardous wastes, and the incineration reaction is an oxidative pyrolysis reaction at high temperature. The incineration treatment technology requires that the high-temperature gas generated by the incineration reaction must be rapidly cooled (chilled) to avoid incineration reverse reactions and side reactions. The chilling method generally adopts two methods: water chilling and waste heat boiler rapid cooling. For incinerators with a small amount of waste, the method of cooling by spraying water is generally adopted, and then the waste water is treated; for incinerators with a relatively large amount of waste tre...

AI Technical Summary

Problems solved by technology

[0003] It is difficult to incinerate the large amount of salt-containing waste liquid, especially for organic waste liquid containing sodium salt

If the heat is not recovered, a large amount of heat energy will be lost, greatly reducing the economical efficiency of the device operation; if the heat is recovered, the molten state, solid sodium peroxide and other inorganic sodium salts carried in the flue gas after incineration will be attached to the heat exchange On the tube wall, a "dirt layer" is formed, which reduces the heat exchange efficiency, shortens the equipment operation cycle, and even makes the equipment unable to operate

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