Ammonia distillation reboiler for supercritical water oxidation system and its processing method and use method

Abstract

The invention discloses an ammonia distilling reboiler for a supercritical water oxidation system as well as a processing method and an application method thereof, which belongs to the field of chemical industry and environmental protection heat exchangers. The ammonia distilling reboiler comprises a barrel, an upper end enclosure, a lower end enclosure, a sewage inlet, a side surface sewage discharging opening, a heating coiled pipe, a steam outlet and a bottom sewage discharging opening. When in work, hot fluid enters the heating coiled pipe, the sewage is continuously heated and evaporatedto form vapor to enter an ammonia distilling tower, the sewage is discharged from the side surface sewage discharging opening according to the concentration of inner inorganic salt, and when the ammonia distilling reboiler is in normal work, the sewage can be normally discharged. The crystallization of inorganic salt caused by the continuous gathering and concentration of the sewage in the ammoniadistilling reboiler can be prevented from damaging a part, the working efficiency and safety of the equipment can be improved, and the equipment maintenance cost and the component replacement cost can be reduced.

Description

technical field [0001] The invention belongs to the field of heat exchangers in chemical industry and environmental protection technology, and in particular relates to an ammonia distillation reboiler used in a supercritical water oxidation system, a processing method and a using method thereof. Background technique [0002] Supercritical water oxidation is an advanced oxidation technology used to treat high-concentration, refractory organic wastewater and sludge. When the temperature and pressure of water reach its critical point (374°C, 22.1MPa), it reaches a supercritical state. At this time, the water tends to be a non-polar fluid with enhanced fluidity and can almost completely dissolve organic matter and gases. . Supercritical water oxidation technology is the application of many characteristics of supercritical water. Supercritical water is used as the medium for the oxidation reaction between organic matter and oxygen in wastewater sludge, and the rapid oxidation of...

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Problems solved by technology

[0007] Aiming at the defects in the above-mentioned prior art, the present invention provides an ammonia distillation reboiler for a supercritical water oxidation system. One of the purposes of the present invention is to solve the problem of inorganic In order to solve the problem of damage to components caused by salt crystallization, the structural design of the ammonia distillation reboiler is reasonable, which can realize reasonable, safe and efficient utilization of energy

[0008] The second purpose of the present invention is to solve the problem of leakage of high-temperature and high-pressure fluid, thereby ensuring the safe operation of the device

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