Flue gas absorption process based on acidic ammonia treatment technology

Abstract

The invention belongs to the field of flue gas treatment, and especially discloses a flue gas absorption process based on acidic ammonia treatment technology. In view of the conventional problem thatflue gas cannot be well treated and heat in the flue gas cannot be utilized, the scheme is provided which includes the following steps: S1, an evaporation box is arranged on the bottom of a purification tower, a spiral tube is arranged on the outer side of the evaporation box, one end of the spiral tube is a flue gas inlet, the other end of the spiral tube is a flue gas outlet, and the flue gas outlet communicates with the purification tower; S2, the flue gas enters the spiral tube through the flue gas inlet, the flue gas flows in the spiral tube to enable the heat in the flue gas to preheat the evaporation box, and the flue gas enters the purification tower through the flue gas outlet; and S3, the flue gas is in contact with ammonia water in the purification tower for reaction. The flue gas absorption process based on the acidic ammonia treatment technology can well treat the flue gas, and can utilize the heat in the flue gas to avoid the loss of the heat and save the consumption of resources.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a flue gas absorption process based on acidic ammonia treatment technology. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. The harm to the human body depends on the composition, concentration, duration and action site of the pollutant on the one hand, and on the sensitivity of the human body on the other hand. High smoke concentration can cause acute poisoning, manifested as cough, sore throat, chest tightness, asthma, headache, stinging eyes, etc., and severe cases may die. The most common is chronic poisoning, causing irritatio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the flue gas cannot be treated well and the heat in the flue gas cannot be utilized, and a flue gas absorption process based on acidic ammonia treatment technology is proposed