Method for recycling oil-containing sludge sand

Abstract

The invention provides a method for recycling waste oil-containing sludge sand. The technical scheme is as follows: the method comprises the following steps: carrying out oil-water-sludge-sand separation, and researching the particle size composition of the oil-containing sludge sand by a sieve analysis process, wherein the particle size distribution of the oil-containing sludge sand is mainly concentrated at 0.1-0.85mm, the yield is 90%, the average particle size is 0.23mm, the sludge content is 1.74%, and the oil-containing sludge sand is suitable for making baking-free bricks; and adding 15-50% of cement, 10-30% of gravel, 1-10% of curing agent and 20-50% of clear water into the separated sand, stirring in a stirrer to make mortar, transmitting into a molding press by a transmission band, and carrying out molding pressing to obtain the mechanically pressed baking-free bricks. The invention effectively solves the problem that the sludge sand pollutes the soil and environment, saves the precious energy sources and abundant funds, can generate huge social benefit and economic benefit, and is suitable for wide popularization and use.

Description

Technical field: [0001] The invention relates to a utilization method of oily sludge sand, in particular to a resource utilization method of oily sludge sand. Background technique: [0002] At present, oily sludge sand is mainly produced in oil exploration and development in oil fields. Oily sludge sand itself has complex components, containing a large amount of aged crude oil, wax, colloid, suspended solids, salts, acid gases, etc. It takes hundreds of years to completely decompose under natural conditions due to the existence of components; the direct discharge of oily sludge will occupy a large amount of land, and the toxic substances contained in it will pollute water, soil and air, and deteriorate the ecological environment; The oily waste (HW08 item) listed in the "National Hazardous Waste Catalog" is estimated according to my country's current crude oil production (16×108t / a), and nearly one million tons of oily sand is produced every year, which is seriously polluted a...

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Problems solved by technology

[0002] At present, oily sludge sand is mainly produced in the oil exploration and development of oil fields. The composition of oily sludge sand itself is relatively complex, containing a large amount of aged crude oil, wax, colloid, suspended solids, salts, acid gases, etc. It takes hundreds of years to completely decompose under natural conditions due to the existence of components; the direct discharge of oily sludge will occupy a large amount of land, and the toxic substances contained in it will pollute water, soil and air, and deteriorate the ecological environment; The oily wastes (HW08 item) listed in the "National Hazardous Waste Catalog" are estimated according to my country's current crude oil production (16×108t / a), and nearly one million tons of oily sands are produced every year. The pollution is serious and needs to be solved urgently.

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