Novel incineration system and process for treating high-salt wastewater

Abstract

The present invention discloses a novel incineration system and process for treating high-salt wastewater. The incineration system comprises a low-temperature incineration unit, a high-temperature incineration unit and a quench unit that are connected in sequence, wherein the high-temperature incineration unit and the quench unit are integrally arranged, the incineration temperature of the low-temperature incineration unit is less than 700 DEG C, the incineration temperature of the high-temperature incineration unit is greater than 1100 DEG C, and the flue gas residence time is greater than orequal to 2s. The invention adopts low-temperature and high-temperature two-section incineration technology that the low-temperature section avoids the melting-point temperature range of inorganic salts, decomposes and burns other organic substances, and discharges most of the solid salt at the same time; the high-temperature section is fully burned and the remaining inorganic salts are melted tobe able to effectively treat the high-salt wastewater; the high-temperature incineration unit and the quench unit are integrated arranged, and the interface process is short to reduce the possibilityof molten salt clogging; and the design of a marble wall and a water curtain wall in a quench tower of the quench unit avoids the adhesion of molten salt on the wall of the quench tower to enable themolten salt crystals to fall off smoothly.

Description

technical field [0001] The invention relates to the technical field of chemical environmental protection equipment, in particular to a novel incineration system and process for treating high-salt wastewater. Background technique [0002] With the rapid development of the national economy and the improvement of people's requirements for the living environment, the state's efforts to control environmental pollution have been continuously strengthened, and more and more attention has been paid to the disposal of the three wastes. Among them, the disposal of high-salt wastewater produced by chemical, pharmaceutical and other enterprises is a big difficulty. [0003] High-salt wastewater refers to wastewater containing organic matter and a large amount of inorganic salts, which mainly come from food processing, pharmaceuticals, chemical plants, and oil and natural gas collection and processing. This wastewater contains a variety of substances, including Cl - , SO 4 2- 、Na + ...

AI Technical Summary

Problems solved by technology

One of the most important problems in the incineration technology of high-salt wastewater is: the melting point of inorganic salts in high-salt wastewater is mostly at 750-900°C, which melts in the high temperature environment of the incinerator at 1100°C, crystallizes out after the temperature drops, and is easy to smoke at the outlet of the incinerator. The channel is blocked; while the crystallized inorganic salt has a stable structure and is very difficult to deal with when it adheres to the wall

Images