A method for starting an activated coke dry adsorption purification device

Abstract

The invention relates to a start-up method of an active coke dry adsorption purification device. The method comprises the following steps: (1) introducing air into an active coke adsorption tower equipped with fresh active coke to passivate the fresh active coke; (2) nitrogen enters the activated coke adsorption tower to replace at least part of the air; (3) introduces the flue gas to be purified into the activated coke adsorption tower, the initial introduction of the flue gas to be purified does not exceed 80% of the device design load, gradually Increase the introduction of flue gas to be purified until it reaches 100% of the design load of the device, and the activated coke dry adsorption purification device operates normally. The start-up method of the present invention adopts air circulation to passivate the active coke before introducing the flue gas to reduce its adsorption activity and avoid overheating of the active coke bed when the flue gas is introduced, and the air passivation process of the active coke can be independent of the The upstream system is carried out in advance, which shortens the start-up time of the device and ensures the safe and stable operation of the active coke adsorption tower.

Description

Technical field [0001] The present invention relates to the field of active ocuroscopic flue gas desulfurization process, and in particular, to a method of starting a chemical adsorption purification apparatus. Background technique [0002] The activated coke method has begun industrial applications in the 1980s, with high desulfurization efficiency, reactive water, no wastewater waste, no equipment corrosion problems. With the increasing environmental requirements, this technology has attracted more and more attention, and it is widely used. Applying active coke method purification techniques to catalytic cracking devices, which can effectively remove SO in regenerated flue gas 2 / SO 3 At the same time x , Particulate matter and VOCS, etc. also have a synergistic removal effect, combined with the upstream SCR and downstream bag dust collector, and the entire purification system can purify the smoke to meet the standard requirements. [0003] The active coke adsite is mainly bas...

AI Technical Summary

Problems solved by technology

When the existing active coke dry purification device is started for the first time, the amount of flue gas introduced initially is only 40-50% of the design load, and the temperature of the flue gas is controlled not to exceed 120°C. After the activated coke adsorption tower is operated for 7-8 days, the adsorption activity will be corresponding After the reduction, gradually increase the flue gas volume to the normal design load. The whole start-up process is relatively long, usually 7-10 days, which brings some inconvenience to the timely commissioning of the device.

Images