Sludge liquid fuel and preparation method thereof

Abstract

The purpose of the present invention is to provide a low-cost, clean-burning liquid sludge fuel prepared with sludge and cinder and a preparation method thereof. The liquid sludge fuel of the present invention contains the following ingredients: (A) 45 to 65 weight portions of hydrous sludge with water content between 70 Wt percent and 90 Wt percent; (B) 30 to 50 weight portions of cinder; (C) 1 to 10 weight portions of chemical additive composed of emulsifier, suspending agent or desulfurizer or any combination thereof; and wherein, the average diameter of solid particles is less than 20 microns. The unit heat value of the liquid sludge fuel is high, practicability is strong, the solid particles in the fuel are uniformly mixed, combustion is stable and sufficient, and the generation of carcinogens such as dioxin can be avoided, so the liquid sludge fuel generates no pollution. Since the liquid sludge fuel directly adopts sludge coming from Sewage treatment plants and cinder discarded by refineries, raw materials are sufficient, the cost is low, and while the discharge of urban and industrial waste water, wastes and waste gas is reduced, the wastes are changed into valuables, so the reclaiming, quantity-reducing and harmless application of the sludge and cinder can be fully realized.

Description

technical field [0001] The invention belongs to the technical field of waste treatment such as industrial waste residues and urban sewage sludge, and in particular relates to a fuel prepared from industrial waste residues and sludge as basic raw materials and a preparation method thereof. Background technique [0002] Sludge is the garbage produced by sewage treatment plants in the process of treating urban sewage and industrial wastewater. Sludge contains harmful substances such as heavy metals, organic matter, and pathogenic microorganisms. If it is not treated properly, it will inevitably cause secondary harm and lasting harm to the environment. The current sludge treatment methods include: 1. Incineration method: organic matter can be burned to kill pathogenic microorganisms, and the volume of ash after incineration is small, but the traditional incineration method is not enough to burn, and will produce carcinogens such as dioxin ; 2. Landfill or composting method: the ...

AI Technical Summary

Problems solved by technology

The current sludge treatment methods include: 1. Incineration method: organic matter can be burned to kill pathogenic microorganisms, and the volume of ash after incineration is small, but the traditional incineration method is not enough to burn, and will produce carcinogens such as dioxin ; 2. Landfill or composting method: the treatment cost is low, but it takes up a lot of land, and pollutants such as heavy metal elements will seep into the ground, pollute the groundwater, and cause secondary pollution; 3. Pyrolysis method: use sludge The production of liquid fuel is expensive, and it is impossible to realize the clean and comprehensive utilization of sludge

[0003] Waste oil coke residues from oil refineries contain a large amount of combustible substances, sulfur and heavy metal elements, and random stacking or burning may easily cause secondary pollution of groundwater or air

[0004] To sum up, traditional treatment methods will not only pollute the environment, but also waste valuable resources contained in waste materials such as sludge and coke residue. Methods for Quantification and Detoxification Applications