Sewage sludge biomass coal liquid and producing process

Abstract

The invention relates to sludge biomass coal slurry and a manufacturing process thereof. The invention is characterized in that the manufacturing process comprises the following steps: (1) 10-50 parts of sludge and 0.01-5 parts of sludge modifier are mixed by part by weight to form modified sludge after full reaction; (2) the modified sludge obtained in the step (1) and 40-70 parts of coal dust, 1-50 parts of water, 1-60 parts of fuel oil and 0.01-2 parts of dispersant are mixed by part by weight and ground fully, so that the average grain diameter of solid particles in the mixture is less than 300 micron, thus obtaining the sludge biomass coal slurry. Compared with the prior art, the invention has the advantages of fully utilizing useful ingredients in the sludge and being environmentally friendly and energy-saving.

Description

Technical field: [0001] The invention relates to sludge treatment and reuse technology and sludge regeneration products. Background technique: [0002] The principles followed by sludge treatment at home and abroad today are "reduction, stabilization, harmlessness and resource utilization". The commonly used treatment methods are as follows: [0003] Agricultural use of sludge: However, the conditions for agricultural use of sludge are relatively strict: there are strict standards for toxic and harmful substances and pathogenic microorganisms in sludge, so the application is also subject to certain restrictions. [0004] Sludge landfill: There are some problems as follows: due to the high water content of sludge and the leachate is high-concentration organic sewage, it must be collected and treated to prevent secondary pollution; the difficulty of landfill compaction machinery is increased; landfill poor sanitation. [0005] Sludge drying and heat treatment: The disadvant...

AI Technical Summary

Problems solved by technology

[0003] Sludge agricultural use: However, the conditions for sludge agricultural use are relatively strict: there are strict standards for toxic and harmful substances and pathogenic microorganisms in sludge, so the application is also subject to certain restrictions

[0004] Sludge landfill: There are some problems as follows: due to the high water content of sludge and the leachate is high-concentration organic sewage, it must be collected and treated to prevent secondary pollution; the difficulty of landfill compaction machinery is increased; landfill poor sanitation

[0005] Sludge drying and heat treatment: The disadvantage of direct drying is that it consumes a lot of energy. Generally, the production of 1 ton of dry sludge (water content 10%) requires more than 1 ton of coal, which increases the processing cost and has a great impact on the surrounding environment.

[0006] Sludge incineration: There are the following problems: (1) High investment and operating costs; (2) The fly ash, slag and flue gas produced during the incineration process have a great impact on the environment; (3) The useful components in the sludge have not been obtained Take advantage of

The Institute of Thermal Energy of Zhejiang University, on the basis of using coal washing slime in a fluidized bed of different density, has carried out the research on sludge fluidized bed incineration technology for the first time in China since 1992. The quality and technical level requirements are high, and the application of technology is still subject to certain restrictions.