U-shaped stripping distillation tower plate for ammonia removal of waste water

Abstract

The invention discloses a U-shaped stripping distillation tower plate for ammonia removal of waste water. The tower plate is composed of rectangular mass transfer regions at the center, crescent mass transfer regions at upper and lower sides, and a liquid receiving region and a liquid dropping region at left and right sides, wherein the rectangular mass transfer regions are formed by strip-shaped plate bodies with transverse U-shaped sections in parallel, the U-shaped ends of the adjacent plate bodies are staggered from one another at intervals, airflow passageways are formed by the intervals, air inlet holes are formed in two ends of the U-shaped end of each plate body, the diameter of each air inlet hole is phi 3-6mm, and the pitch of the air inlet holes is 8-22mm; the liquid receiving region is composed of concave slot bodies formed by the U-shaped plate bodies on the edges of the rectangular mass transfer regions; the liquid dropping region is composed of a diversion longitudinal plate and a defoaming plate which are arranged on the other edge of the rectangular mass transfer regions longitudinally; and each crescent mass transfer region comprises two edge plates with L-shaped sections and a plate body with U-shaped sections, longitudinal plates of the L-shaped edge plates are buckled in notches of the U-shaped plate bodies, and the L-shaped edge plates and the U-shaped plate bodies are spaced from each other to form airflow passageways.

Description

technical field [0001] The invention belongs to the field of chemical separation equipment, and relates to the production of novel gas-liquid mass transfer equipment in chemical engineering, in particular to trays of sieve towers. Background technique [0002] Towers are the most commonly used gas-liquid mass transfer process equipment in industrial equipment; commonly used towers are classified according to the structure of the tower internals, mainly including plate towers and packed towers. Due to the simple structure, convenient processing, easy maintenance and low cost of the sieve plate tower, it is more widely used in industry than the packed tower. However, under the condition of large liquid volume, the traditional sieve tray has uneven liquid flow on the plate, small operating elasticity, large plate pressure drop, and easy fouling and blockage. This kind of tray can only be operated in a narrow range, and the gas When the liquid fluctuates slightly or the feed am...

AI Technical Summary

Problems solved by technology

Traditional sieve trays have poor adaptability to wastewater deamination, mainly manifested in uneven liquid flow on the plate, easy scaling and blockage of flow channels, resulting in excessive resistance; and this kind of tray is more sensitive to load fluctuations, When the gas-liquid fluctuates slightly or the feed amount needs to be increased, the tray efficiency drops significantly; when the alkalinity in the wastewater is high or the concentration of organic matter is high, the foam in the rectification process will block the circulation channel

However, the existing S-type high-efficiency guide conforms to the flow channel in the sieve tray due to the S-type setting, which can only flow on one side, and the efficiency is limited.

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