Salt-contained waste liquid incineration device and technology lowering dust harm

Abstract

The invention discloses a salt-contained waste liquid incineration device and technology lowering dust harm and belongs to the field of salt-contained waste liquid processing. The salt-contained waste liquid incineration device lowering dust harm structurally comprises an incinerator, a combustor, an air blower and a waste liquid atomizing spray nozzle. The lower portion of the incinerator is provided with an outlet flue. The waste liquid atomizing spray nozzle is arranged on the upper portion of an evaporation chamber. The inlet end of the evaporation chamber is provided with a circulating flue. The outlet end of the evaporating chamber is connected with the inlet end of the circulation draught fan through a pipeline. The outlet end of the circulating draught fan is connected with the inlet end of the dust collector through a pipeline. The outlet end of the dust collector is connected with the incinerator through a pipeline. The salt-contained waste liquid incineration device and technology lowering dust harm have the advantages that evaporation of the salt-contained waste liquid is conducted outside the incinerator, so that the service lives of the waste liquid atomizing nozzle and the incinerator are prolonged, combustible harmful matter in the salt-contained waste liquid can stay for a longer time in the incinerator, so that decomposition of the combustible harmful matter is fuller, solid particles formed in the salt-contained waste liquid can be effectively removed, the generation amount of dioxin is reduced, and the harm of salt to the incinerator is relieved.

Description

technical field [0001] The invention relates to the field of saline waste liquid treatment, in particular to a saline waste liquid incineration equipment and process for reducing dust hazards. Background technique [0002] The incineration method is effective in treating harmful saline waste liquids from industry and agriculture, is low in cost and can recover the heat in the saline waste liquids, and has been widely used in the harmless disposal of saline waste liquids. [0003] Usually, the salty waste liquid enters the incinerator directly after being atomized through the nozzles installed in the incinerator. In the incinerator, the atomized salt-containing waste liquid droplets are heated to evaporate and decompose, and the combustibles and the oxygen in the furnace undergo a sufficient oxidation reaction to complete the incineration process of the salt-containing waste liquid. Due to the wide range of sources of saline waste liquid, there are metal salts, halogen eleme...

AI Technical Summary

Problems solved by technology

Setting the position of the saline waste liquid spray gun will form a local low temperature, which will affect the stable operation of the burner

3. The temperature in the salty waste liquid incinerator is very high, and the nozzle of the salty waste liquid is directly radiated by the high temperature in the furnace, and the operating environment is harsh and easily damaged

4. The nozzle is a vulnerable part, and its atomization effect will usually become worse with the accumulation of use time

6. Alkali metals, vanadium, halogen elements and other harmful elements in the salty waste liquid will form a corrosive atmosphere in the high-temperature flue gas, which will seriously affect the service life of the incinerator lining

7. Alkali metals, vanadium, halogen elements and other harmful elements in the salty waste liquid exist in gaseous form in the high-temperature flue gas, and can condense on the heat exchange surface of the waste heat boiler, which will block the flue gas channel and corrode the waste heat Boiler heat exchange surface

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