Environmental protection type coal produced from sludge and fatlute and manufacturing method thereof

Abstract

The invention provides an environmental protection type coal produced from sludge and fatlute and a manufacturing method thereof, and belongs to the field of solid waste integrative utilization. The environmental protection type coal produced from sludge and fatlute makes integrative utilization on the solid waste and can make full use of calorific values of sludge and fatlute. The environmental protection type coal is mainly prepared from, by mass, 60-80 parts of coal powder, 10-40 parts of sludge, 1-20 parts of fatlute, and 0.5-5 parts of briquette cohesive agent. The sludge is prepared through chemical disinfection treatment, the fatlute is prepared by reducing viscosity, and the briquette cohesive agent is prepared after fully stirring the low metamorphic lignitous coal, alkaline waste residues and paper making black liquid. The addition of certain amount of lime into the coal powder is good for desulfuration, and is also good for briquette coal demolding. The environmental protection type coal produced by carrying out mixing extrusion on the materials in certain proportion makes full use of caloric values of the sludge and fatlute, prevents the sludge and fatlute from generating secondary pollution, and has obvious environmental benefits and economic benefits. The environmental protection type coal produced from sludge and fatlute and the manufacturing method thereof can be applicable to the production process of environmental protection type coal.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste, and in particular relates to an environment-friendly briquette produced by utilizing sludge and oil sludge and a production method thereof. Background technique [0002] At present, most of the sewage treatment plants in my country have two methods of sludge treatment. One is from the sludge produced by domestic sewage plants, which is usually used as organic fertilizer after pressure filtration and dehydration; the other is It is the sludge from the sewage treatment plant in the industrial zone or the development zone. Although the sludge has a high content of organic matter and is easy to dehydrate, but because it contains a certain amount of oil, refractory organic matter or heavy metals exceeding the standard, the generated sewage Sludge can only be landfilled in garbage plants or discharged outside, which cannot meet the requirements of completely harmless treatment of s...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the sewage treatment plants in my country have two methods of sludge treatment. One is from the sludge produced by domestic sewage plants, which is usually used as organic fertilizer after pressure filtration and dehydration; the other is It is the sludge from the sewage treatment plant in the industrial zone or the development zone. Although the sludge has a high content of organic matter and is easy to dehydrate, but because it contains a certain amount of oil, refractory organic matter or heavy metals exceeding the standard, the generated sewage Sludge can only be landfilled in garbage plants or discharged outside, which cannot meet the requirements of completely harmless treatment of sludge, nor can it use the calorific value of sludge

[0003] Oil sludge is a solid waste produced in the process of oil extraction, transportation, refining, drilling, etc. It has the characteristics of high viscosity and a certain amount of calorific value, and is a valuable secondary energy source. However, because oil sludge often contains a certain amount of heavy metals, oil Alkaline, alkali and some harmful chemical substances (oil extraction aids and various surfactants), improper stacking will cause great harm to the environment, so it has been listed as hazardous solid waste by the state and must not be discharged at will

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