Atmospheric analytical recovery tower for high-ammonia-content wastewater

Abstract

The invention relates to an atmospheric analytical recovery tower for high-ammonia-content wastewater, belonging to the equipment for chemical industry. The atmospheric analytical recovery tower for the high-ammonia-content wastewater consists of a tower body, a feed distributor, a steam distributor, stripping-section stainless steel structured packing materials, a rectifying-section stainless steel structured packing material and a titanium condenser, wherein the upper section of the tower body is a rectifying section, the lower section of the tower body is a stripping section, a feeding port and the feed distributor are arranged at the boundary of the rectifying section and the stripping section, the upper end and the lower end of the tower body are respectively provided with a gas phase outlet and a discharging port, the titanium condenser and the rectifying-section stainless steel structured packing material are sequentially arranged below the gas phase outlet, the stripping-section stainless steel structured packing materials and a steam inlet are sequentially arranged below the feed distributor, and the steam distributor is arranged at the feed distributor. The atmospheric analytical recovery tower for the high-ammonia-content wastewater has the advantages of good effect in recovery, implementation of atmospheric recovery, good equipment stability, cost-saving performance, and energy-saving performance and environment-friendliness.

Description

technical field [0001] The invention relates to an atmospheric pressure analysis and recovery tower for high-ammonia-containing wastewater, which belongs to chemical equipment. Background technique [0002] The temperature of the gas phase at the top of the existing pressurized ammonia distillation tower and the liquid phase at the bottom of the tower are about 100°C and 125°C. When the temperature at the bottom of the tower is between 120°C and 130°C, methyl ammonium carbonate will be produced to aggravate the corrosion of stainless steel, causing the upper tower Body, tower top heat exchanger, stainless steel packing, gas phase pipeline corrosion leakage at the top of the tower, had to stop for repair or replacement, generally there will be pipe leakage in about three months, stainless steel packing needs to be replaced after one year, and parts need to be replaced in about two years The tower body leads to relatively high operating costs of the equipment, which restricts ...

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Problems solved by technology

[0002] The temperature of the gas phase at the top of the existing pressurized ammonia distillation tower and the liquid phase at the bottom of the tower are about 100°C and 125°C. When the temperature at the bottom of the tower is between 120°C and 130°C, methyl ammonium carbonate will be produced to aggravate the corrosion of stainless steel, causing the upper tower Body, tower top heat exchanger, stainless steel packing, gas phase pipeline corrosion leakage at the top of the tower, had to stop for repair or replacement, generally there will be pipe leakage in about three months, stainless steel packing needs to be replaced after one year, and parts need to be replaced in about two years The tower body leads to relatively high operating costs of the equipment, which restricts the economic benefits of the production enterprise; due to the short service life of the packing, it is easy to cause the ammonia distillation efficiency to drop due to corrosion, and various stainless steel pipe fittings leak, and the ammonia distillation pressure cannot be guaranteed. The waste liquid ammonia nitrogen exceeds the standard after ammonia distillation happens from time to time (the waste liquid contains more than 35ppm ammonia nitrogen), which directly affects the ammonia nitrogen discharge index of the total discharge port of the production enterprise. The total discharge port is monitored online, and the environmental protection problem is relatively prominent

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