Sludge chemical chain gasification system based on steel slag oxygen carrier and process

Abstract

The invention discloses a sludge chemical chain gasification system based on a steel slag oxygen carrier and a process. The system comprises a combustible gas collection device, a filtering device, amain cyclone separator, a main fluidized bed, a grinding machine, an air blower, a secondary bed cyclone separator, a secondary fluidized bed and an ash hopper. Compared with the prior art, the systemviews from practical problems that city sludge and steel slag of the steel industry are hard to treat at present, is based on the idea of "treating wastes with wastes", and develops a sludge chemicalchain gasification technique based on the a steel slag oxygen carrier, and through the research, volume reduction and amount reduction of sludge and steel slag are facilitated, meanwhile, heat valuesin the sludge can be recycled, and energy utilization of the sludge can be achieved. Compared with a conventional sludge treatment technique, the system is capable of remarkably lowering the operation cost, reducing pollutant emission in the production process, and has good social, economic and environment-friendly benefits.

Description

Technical field [0001] The invention relates to the technical field of environmental protection, in particular to a sludge chemical chain gasification system and process based on a steel slag oxygen carrier. Background technique [0002] Sludge is a viscous floc that settles in the process of sewage treatment, which contains a large amount of heavy metals, eggs, pathogens and organic pollutants, which is harmful to the environment. my country’s current sludge disposal methods are mainly landfills. However, with the continuous development of my country’s economy and the advancement of urbanization, the production of sludge is increasing day by day. The landfill disposal of sludge faces limited landfill space and landfills. Difficulty in land utilization and secondary pollution caused by leachate. Because the sludge contains a large amount of organic matter and combustible components, it has a high dry basis calorific value, and has the value of energy development and utilization. ...

AI Technical Summary

Problems solved by technology

A large amount of steel slag stacking not only occupies a large amount of farmland, but also affects air quality, pollutes water resources, and has a serious negative impact on the ecological environment

If these steel slags cannot be comprehensively utilized, it will inevitably occupy more and more land, cause great pressure on the ecological environment, and seriously hinder the sustainable development of my country's iron and steel industry. At the same time, the disposal and accumulation of steel slag is also a waste of resources.

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