Consecutive reaction apparatus for moisture sludge through anhydration and pyrolysis under microwave irradiation as well as method thereof

Abstract

The invention discloses a consecutive reaction apparatus for moisture sludge through anhydration and pyrolysis under microwave irradiation as well as a method thereof. The condensation comprises a sludge warehouse, a stirrer, a hopper feeder, a sludge-shaped controller, a belt sender, a power control microwave irradiation device, a microwave pyrolysis reaction chamber, a pressure sensing controller, a blower fan, a condensation heat exchanger, a scraper plate separator, an oil-water separating device, a liquid dredging groove, a coke storage tank, a product oil tank, a product gas tank, a nitrogen generator, a coke crusher, a sludge water pot and a gas shunting plate. According to the invention, microwave material internal heating characteristic can be fully used for reducing heat radiation loss, moisture sludge is directly performed with anhydration and pyrolysis to obtain the cracking oil, combustible gas and solid coke; heat recovery of the product gas and auxiliary microwave heating characteristic of the products residue are fully used for reducing the operation cost, and sludge pyrolysis efficiency and products quality can be increased. The apparatus has the advantages of simple structure, small volume, reasonable design and convenient market popularization, and is suitable for industrial application of microwave sludge continuous pyrolysis.

Description

technical field [0001] The invention relates to a microwave irradiated wet sludge drying pyrolysis continuous reaction device and method, and belongs to the fields of microwave heating application technology and sludge disposal technology. Background technique [0002] Currently, the most common methods for treating sewage sludge are composting, farmland utilization, and incineration, but they all have their own drawbacks. The composting process does not achieve volume reduction, and the processing, storage, and buffer areas occupy a large area. To prevent contamination with harmful pollutants, the soil is partitioned, and this treatment wastes a lot of the energy contained in the sludge itself. Sludge composting has high operating costs and is not suitable for large-scale treatment projects, and there are no successful examples of large-scale treatment projects. Excessive use of farmland utilization methods will lead to the increase of heavy metal content in farmland soil...

AI Technical Summary

Problems solved by technology

[0003] At present, microwave pyrolysis sludge technology is still in the stage of experimental research, and it is generally carried out in the form of batch tube furnaces and reaction tanks. Batch reactors require frequent replacement of materials, which has the advantages of cumbersome operation, large heat loss, unstable reaction process, and poor control. High requirements and shortcomings, not suitable for industrialization

However, the current invention does not have a microwave pyrolysis device for continuous reaction of wet sludge, and lacks specific instructions and operability for the sludge feeding method, the gas, liquid, and solid collection methods of the pyrolysis system, and the thermal recycling method

Images