Harmless treatment method and harmless treatment device for industrial petroleum wastes

Abstract

The invention provides a harmless treatment method and a harmless treatment device for industrial petroleum wastes. The method comprises the following steps: performing microwave heating treatment by taking industrial petroleum wastes or pre-treated industrial petroleum wastes as a microwave pyrolytic raw material; heating to a temperature of 500 to 1400 DEG C; controlling the temperature increment speed in a temperature increasing process in which the material is heated to the temperature of 350 to 400 DEG C to be 10 to 50DEG C / min; controlling the microwave treatment time after the material is heated to the temperature of 350 to 400 DEG C to be 5min to 30min; carbonizing and pyrolyzing the raw material into a gas phase part and a solid phase part during the microwave heating process, and respectively recycling the gas phase part and the solid phase part. The invention also provides the harmless treatment device for the industrial petroleum wastes. In the method provided by the invention, heat energy can be fully utilized; energy consumption is relatively low; the method has the advantages of good operability, stable system, low cost, totally-harmless treatment products and the like.

Description

technical field [0001] The invention relates to a method and device for harmless treatment of petroleum industrial waste, belonging to the technical field of petroleum industrial waste treatment. Background technique [0002] In the process of oil field exploration and development, it is inevitable to produce a large amount of mixtures containing oil, water, bentonite, sediment, petroleum additives and drilling cuttings (hereinafter referred to as petroleum industrial waste), which contain a large amount of Mineral oil, high molecular polymers, phenolic compounds, heavy metals and other toxic substances, especially the organic substances in them, if they are directly discharged, they will pollute the soil, surface and groundwater, which can directly or indirectly affect plants, animals and Hazard to human health. Therefore, the oil industry waste must first be harmlessly treated so that it meets the national emission standards before it is discharged, otherwise it will caus...

AI Technical Summary

Problems solved by technology

The defect of this technology is: 1, this method will consume a large amount of water resources, and an average well will consume 3-20 ten thousand cubic meters of water; 3. This method only transfers the pollution source, which may cause potential hazards to the groundwater system and may induce geological disasters

The disadvantages of this technology are: 1. The occupation time is too long, generally 5-7 days, and the elder can reach 20 days; %; but for other polymer substances can not be degraded

[0010] 1. The processing cost is high; for example, the high-efficiency curing agent used in the drilling cuttings reinjection method and curing method has a high cost problem;

[0011] 2. Produce other pollution; for example, the incineration method requires incineration equipment, the investment cost is high, and toxic and harmful substances will be released during incineration, which will cause secondary pollution;

[0012] 3. The oil removal rate is low; it is far from the "zero discharge standard";

[0013] 4. The treatment cycle is long and the area is large, so it is not suitable for on-site treatment; such as biological treatment, etc.

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