Method for producing hydrogen and potassium alum from waste aluminum cans

Abstract

It is undoubtedly a good way to kill two birds with one stone by using waste aluminum cans to produce new energy hydrogen and environmental protection products potassium alum. Hydrogen has many uses. Hydrogen burns in oxygen and releases a lot of heat. The temperature of its flame-oxygen flame reaches 3000°C, which can be used for welding or cutting metals. As a fuel, hydrogen has the characteristics of abundant resources, high combustion calorific value and less pollution. Potassium alum plays an important role in water purification, paper sizing, paint printing and dyeing, lake pigment pharmaceuticals, paint making, tanning, fiberboard processing, as well as rubber and metallurgy, colored glass, food industry, agriculture, etc. . The invention uses waste aluminum cans as raw materials, produces hydrogen through potassium hydroxide solution, further neutralizes potassium aluminate solution with sulfuric acid, and obtains high-quality potassium alum through crystallization, filtration, washing and centrifugal dehydration. The invention not only eliminates pollution, but also can achieve the purpose of turning waste into wealth and utilizing waste, and is a good method that kills two birds with one stone.

Description

technical field [0001] The invention relates to the technical field of recycling solid metal waste products, in particular to a method for producing hydrogen and potassium alum by using waste aluminum cans. Background technique [0002] Pop-top cans are used as beverage containers, which have the advantages of not compromising the flavor of beverages, easy cooling, light weight, and no cracks. And our country is the country with higher recovery rate of waste pop cans in the world, and at the same time, it is also a country with lower utilization level of waste pop cans in the world. Waste aluminum cans are not easy to decompose waste, and it takes about a hundred years to completely degrade. Since the recycling, storage and transportation, sorting, pretreatment, and smelting process of waste aluminum cans in my country are still in the extensive stage, high-value waste aluminum resources are downgraded for use, especially small enterprises generally adopt the production met...

AI Technical Summary

Problems solved by technology

Since the recycling, storage and transportation, sorting, pretreatment, and smelting process of waste aluminum cans in my country are still in the extensive stage, high-value waste aluminum resources are downgraded for use, especially small enterprises generally adopt the production method of mixing and mixing, resulting in In order to avoid the waste of resource utility and the misplacement of resource allocation, generally recycling is mostly processed and melted to make aluminum products again, which consumes a lot of energy and produces a lot of loss.