Pyrolysis treatment method for oily sludge
A treatment method and sludge technology, applied in pyrolysis treatment of sludge, combustion methods, lighting and heating equipment, etc., can solve the problems of long treatment period, high energy consumption, limited applicability, etc., and achieve low residual oil content, The effect of short treatment cycle and emission compliance
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Embodiment 1
[0068] Example 1: The waste sulfonated oily sludge produced by drilling in an oilfield in Xinjiang was used as the treatment object, and its moisture content was 25%, oil content was 4%, and silt content was 71%. First, the particle size of the oily sludge is crushed to less than 2 cm, and then enters the pyrolysis device for pyrolysis treatment. The first temperature range is controlled to be 300°C to 450°C, and the time for high-temperature heat treatment of the oily sludge to be treated is 40 minutes. ; The second temperature range is controlled at 450°C to 500°C, and the time for incineration of the oily sludge after the reaction is 20 minutes; the temperature of gas mixed combustion is controlled at 1150°C, and the burning time is 2.5 seconds. The oil content of the waste residue after pyrolysis is 1.035‰, the oily gas produced by pyrolysis is burned at high temperature, and the content of dioxin in the high temperature airflow after combustion is less than 0.1TEQng / Nm 3 ...
Embodiment 2
[0069] Embodiment 2: Taking oil-bearing cuttings produced by drilling in an oil field in Northeast China as the processing object, the water content is 35%, the oil content is 1%, and the rock-bearing rock is 64%. First, the particle size of the oily sludge is crushed to less than 2cm, and then enters the pyrolysis device for pyrolysis treatment. The first temperature range is controlled to be 450°C to 500°C, and the time for high-temperature heat treatment of the oily sludge to be treated is 50 minutes; The second temperature range is controlled from 500°C to 750°C, and the time for incineration of the oily sludge after the reaction is 40 minutes; the temperature of gas mixed combustion is controlled at 1150°C, and the burning time is 2.5 seconds. The oil content of the waste residue after pyrolysis is 1.927‰, the oily gas produced by pyrolysis is burned at high temperature, and the content of dioxin in the high temperature airflow after combustion is less than 0.1TEQng / Nm 3 ...
Embodiment 3
[0070] Example 3: The oily sludge polluted by a chemical plant is used as the treatment object, in which the benzene content is 624 mg / kg, the trichlorethylene content is 2349 mg / kg, the tetrachlorethylene content is 1532 mg / kg and the xylene content is 32 mg / kg. First, the particle size of the oily sludge is crushed to less than 2cm, and then enters the pyrolysis device for pyrolysis treatment. The first temperature range is controlled to be 310°C to 500°C, and the time for high-temperature heat treatment of the oily sludge to be treated is 80 minutes; The second temperature range is controlled from 500°C to 650°C, and the oily sludge after the reaction is incinerated for 30 minutes; the temperature of gas mixed combustion is controlled at 1150°C, and the burning time is 2.5 seconds. The content of benzene in the waste residue after pyrolysis is 0.68 mg / kg, that of trichlorethylene is 1.25 mg / kg, that of tetrachlorethylene is 1.34 mg / kg, and that of xylene is 0.43 mg / kg. The ...
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