Multiple-effect evaporation experimental device variable in feeding method and effect number and application method of multiple-effect evaporation experimental device

Abstract

The invention relates to a multiple-effect evaporation experimental device variable in feeding method and effect number and an application method of the multiple-effect evaporation experimental device. The evaporation system of the device comprises evaporators, flash evaporators and circulating pumps, all of which are orderly connected; the upper end of a first-effect evaporator is connected with the upper ends of the evaporators of other effects, respectively; a condensate water drainage pipeline is arranged on the lower end of the evaporator of each effect and is finally connected with a steam-water separator; a feeding pipeline is connected with the evaporators of every effects; a steam pipeline is connected with the first-effect evaporator and the second-effect evaporator; the flash evaporator of each effect is connected with the evaporators of last two effects, respectively; the circulating pump of each effect is connected with the feeding pipeline of the evaporator of next effect; and a valve is arranged on each pipeline to realize control. The multiple-effect evaporation experimental device variable in feeding method and effect number has the advantages that an independently controllable feeding system is adopted so that the feeding methods are diversified and the feeding schemes of direct flow, reverse flow, horizontal flow and mixed flow are realized, an independently controllable steam feeding system is adopted so that steam is capable of independently going into the evaporators of the various effects, and in combination with the evaporators of different types and a plurality of operating procedure schemes, the device is enabled to treat wastewater different in feeding salinity and concentration requirement, and therefore, the treatment effect is improved and the energy is saved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a multi-effect evaporation experimental device with variable feeding mode and effect number and an application method thereof. Background technique [0002] High-salt wastewater, as a kind of difficult-to-treat special wastewater in the wastewater of oilfields, petrochemicals and other enterprises, has always been an important bottleneck problem restricting the "zero discharge" of enterprises. At present, the treatment methods for industrial saline wastewater include membrane treatment technology, halophilic bacteria biochemical treatment technology, advanced flash evaporation and multi-effect evaporation treatment technology, etc. Among them, multi-effect evaporation treatment technology has been widely tried in seawater desalination due to its good operation stability and remarkable economic and environmental benefits, and it has gradually been applied and promoted to the treatm...

AI Technical Summary

Problems solved by technology

[0010] The device can realize the variable feeding method and variable effect number in the process of treating wastewater, which overcomes the poor treatment effect caused by the single feeding method and fixed effect number of the traditional evaporation system, which cannot adjust the treatment plan in time according to different feed liquid conditions. It has the defects of good and energy waste, and can design different treatment schemes in combination with different conditions of feed liquid to find the best treatment scheme, and change the theoretical research of traditional multi-effect evaporation system desalination into practical operation research, through a large number of Experimental data can guide large-scale industrial treatment to improve treatment effect and save energy consumption

Images