Preparation method of cage shaped active carbon for flue gas desulfurization

Abstract

The invention discloses a preparation method of a cage shaped active carbon for flue gas desulfurization, and belongs to the field of active carbon synthesis. The preparation method comprises the following steps: taking cheap and easily-available loofah sponges as the raw material, soaking loofah sponges in a sodium hydroxide solution, then bleaching loofah sponges by calcium hypochlorite, carrying out fermentation, drying fermented loofah sponges in a quick-cooling and quick-heating mode by using a refrigerator and a high temperature baking oven, subjecting loofah sponge fibers to a de-crystallization treatment under the assistance of ball milling so as to improve the reaction activity of loofah sponge fibers, making loofah sponge fibers into pulp taken as the raw material, taking cyclohexane and trichloromethane as the mixed oil phase, tween 60 as the emulsifier, and ammonium persulfate as the initiator, mixing the raw material, mixed oil phase, emulsifier, and initiator with a water phase, carrying out reactions under a heating condition to generate cage shaped fibers, and finally carrying out high temperature carbonization to obtain the cage shaped active carbon for flue gas desulfurization. The obtained caged shaped active carbon is a novel active carbon material, there are many holes on the surface of the active carbon, the cavity in the active carbon is large, the fluid mechanic performance is excellent, and the provided active carbon has a wide application prospect in flue gas desulfurization therefore.

Description

technical field [0001] The invention discloses a method for preparing caged activated carbon for flue gas desulfurization, which belongs to the field of activated carbon synthesis. Background technique [0002] Activated carbon is a commonly used adsorbent. Because of its developed air-strike structure, stable chemical properties, and a large number of high-quality surface functional groups, it has a wide range of applications in industry. With the continuous expansion of the application field of activated carbon, the application specificity is increasingly enhanced, which promotes the development of activated carbon preparation technology. Conventional activated carbon can no longer meet the special requirements of many fields. Therefore, in recent years, a variety of new activated carbon materials have been researched and developed at home and abroad. [0003] Environmental pollution caused by sulfur dioxide and acid rain has become an important factor restricting the sus...

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: for the traditional activated carbon used in the activated carbon flue gas desulfurization technology occurs during use, after the activated carbon is placed in the packed bed, the fluid resistance increases, resulting in an increase in energy consumption loss and an increase in industrial production costs. High problem, a preparation method of flue gas desulfurization cage-shaped activated carbon is provided. The invention uses cheap and easy-to-obtain loofah as raw material, first soaks it with sodium hydroxide solution, and then bleaches it with calcium hypochlorite. After fermentation, Refrigerator freezing and high-temperature oven drying are used for rapid cooling and rapid drying, and ball milling is used to decrystallize the loofah fiber to improve its reactivity. It is made into a slurry as a raw material, and then cyclohexane and chloroform It is a mixed oil phase, Tween 60 is used as an emulsifier, ammonium persulfate is used as an initiator, mixed with water, reacted under heating conditions to form cage-like fibers, and then carbonized at high temperature to obtain cage-like activated carbon for flue gas desulfurization