Method for treating bottom mud of rolling oil

Abstract

The invention belongs to the technical field of recycling of waste resources, in particular to a method for treating bottom mud of rolling oil. The method comprises the following steps of mixing the following raw materials in percentage by weight: 10 to 20% of bottom mud of rolling oil, 10 to 20% of coke breeze, 60 to 76% of coking coal, 0.5 to 5% of quick lime, and 3 to 10% of adhesive, uniformly mixing, extruding, and forming, so as to obtain coal briquette for coking. Compared with the prior art, the method has the advantages that the bottom mud of rolling oil is used as the raw material, and is mixed with the coke breeze, the coking coal, the quick lime and the adhesive to prepare the coal briquette for coking; the coke breeze in a coking plant is utilized at high efficiency, so that the coal resource is saved; the problem of bottom mud of rolling oil in a steel and iron plant is properly solved; while the caloric heat of the oil mud is recycled, the hazard to environment by pollutants is furthest eliminated.

Description

[0001] [technical field] [0002] The invention belongs to the technical field of waste resource recovery and utilization, in particular to a disposal method of rolling oil bottom sludge. [0003] [Background technique] [0004] In iron and steel enterprises, lubricating oil filtration circulation system with automatic backwashing function is often used for steel slab rolling. During the reciprocating rolling, filtering, backwashing, and sedimentation process, lubricating oil is subjected to multiple effects such as temperature, pressure, air, dust, and metal contact, and gradually oxidizes and deteriorates until it forms rolling sludge that cannot be reused. At present, after this part of the sludge is discharged from the system, the supernatant oil that has naturally settled for a long time can be blended with new oil and returned to the rolling line for continued use, while the bottom sludge (hereinafter referred to as rolling oil bottom sludge) due to the solid content Hig...

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Problems solved by technology

At present, there are no relevant reports on recycling at home and abroad.

And similar "three muds" (scum, residual activated sludge, grease trap bottom sludge) of petroleum and petrochemical, crude oil and oil refining industries, the common treatment and utilization methods are incineration, solvent extraction, fuel or building material utilization, landfill etc., as CN 1683262A discloses a kind of treatment method of waste crude oil sludge, is that the crude oil sludge is first heated, dissolved, and sedimentation separated into dirty oil and silt in a settling tank, and then the dirty oil is dehydrated and distilled, and the silt is used as Briquette raw material; CN 1488591A and CN 102351389A dehydrate the oily sludge, then carry out thermal extraction, and send the liquid phase to a coking device for treatment; CN 2392774Y adopts a catalytic coking device to treat oily sediment, which can not only recover multiple fractions of oil, but also It can produce some petroleum coke; CN 102031176A adopts oil sludge, oil residue, waste tar and other high pollutants and organic waste produced in the process of petrochemical exploration, mining, refining and coking as the main material, supplemented by coal powder and curing agent, and presses the formed coal; USP4666585 and USP4994169 take coking distillate oil and oily sludge to stir and mix to make oil slurry, which is sent to the coking feed inlet, so that oily sludge can be treated at high temperature, but due to the high water content of oily sludge, the coking treatment capacity limited, and will affect the normal operation of the coking unit at the same time; CN 1669960A adopts the principle of extraction and two-way dilution to forcefully separate the two phases of thick oil sludge, and then recycle them separately, and finally use the bottom sludge as fuel; the brick making material of CN 101143780A is clay, Loess is used as the base material, which not only wastes natural mineral resources, but also has a limited amount of oilfield sludge mixed in; CN 1618538A heats and dehydrates the oily sludge and then carbonizes it, and the colloidal pitch in the sludge is partially condensed into coke, which is adsorbed on the dry soil internal, final landfill disposal

[0006] Analyzing the above oily sludge treatment technologies, even if there are problems such as complex utilization process, high operating cost, ineffective use of calorific value, and secondary pollution in the treatment process, this type of oily sludge treatment mode cannot be used rolling oil sludge