A low-temperature carbonization treatment process for harmless sludge

Abstract

The invention discloses a harmless low-temperature carbonization treatment process of sludge. The treatment process comprises the following steps: selecting garbage rich in plant fibers, putting the garbage into a crushing machine, performing crushing, adding the crushed plant fiber garbage into a screening box from a material inlet hopper of a screening machine, and driving a first motor to driveoverall vibration of the screening box under the action of first springs. According to the process provided by the invention, second teeth are matched with first teeth for use, so that a filter screen is convenient to install and disassemble, and the filter screen is convenient to replace and repair and convenient to use; a conveyor belt and an inclined plate are arranged, so that particle impactforce caused by falling of a pressing mechanism can be reduced, particles can be prevented from being splashed in the falling process to cause loss, the resources can be saved, and waste can be avoided; through conveying of the conveyor belt, manpower can be saved, and the working efficiency can be improved; and a fire grate rotates, so that residues can be eliminated, the air flow can be accelerated, the particle combustion is more full, and the carbonization rate is high.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a low-temperature carbonization process for harmless sludge. Background technique [0002] In recent years, the output of sewage and sludge-based waste produced in the process of oil exploitation has been increasing continuously, and its composition is complex. Due to the high moisture content and large volume of sludge, it has caused difficulties in the recycling of sewage and sludge, and Its storage or landfill needs to occupy a large area of ​​land, which is easy to pollute the environment. Among them, the oily sludge contains a large amount of petroleum hydrocarbons, and the tail gas generated during the pyrolysis and carbonization process under the condition of oxygen isolation mostly contains acid gases , nitrogen oxides, dioxins and heavy metals and other toxic gases, if these toxic gases are discharged directly without treatment, they will cause serious pollution...

AI Technical Summary

Problems solved by technology

[0003] The patent publication number is: CN105217916A discloses a harmless sludge carbonization treatment process and its process system. Although the sludge can be stabilized for a long time, the energy utilization rate is high, and the sensible heat of the hot flue gas is maximized, reducing the impact on the sludge. The consumption of external energy, but the recycling of plant fiber waste and the harmless disposal of sludge cannot be realized. When using a screening device to screen plant fiber waste, the filter screen is not easy to install and disassemble, and it is inconvenient to replace it And maintenance, it is time-consuming and laborious to manually add mixed particles into the carbonization box, which is easy to cause waste, and the grate is fixed during the carbonization process of the carbonization box, it is not easy to discharge the residue, and the air flow is accelerated to make the particles burn more fully; therefore Design a low-temperature carbonization process for harmless sludge

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