Process for harmless treatment of solid drilling waste
一种无害化处理、钻井的技术，应用在水/污水处理、热解处理污泥、固体废物的清除等方向，能够解决达不到彻底无害化处理效果、二次污染等问题，达到运营成本低、热解效率高的效果
Active Publication Date: 2015-08-26
陆骏
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Problems solved by technology
[0009] In summary, the current treatment methods for oil drilling cuttings sludge in the market are all chemical acid-base neutralization disposal methods, which have many defects and problems, and cannot achieve a complete and harmless treatment effect, and in addition to high-temperature pyrolysis treatment technology Any other way to deal with oil drilling cuttings sludge will still cause secondary pollution problems
However, high temperature pyrolysis treatment, the most thorough volume reduction, harmless and resourceful treatment technology and disposal method, has not been applied to the treatment of oil drilling debris sludge. Therefore, it is urgent to design and manufacture a special Harmless treatment of drilling solid waste by oil drilling water-based sludge
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[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0045] In a preferred embodiment of the present invention, a harmless treatment of drilling solid waste technology, such as figure 1 shown, including the following steps:
[0046] (a) Sludge dehydration: The first conveying mechanism 4 is used to transport the drilling cuttings sludge with a water content ≥ 90% separated from the desanding and desilting assembly to the sludge drying machine 6 or The high-efficiency sludge vibrating sieve is dried and dehydrated to obtain coarse-grained sludge and sewage containing fine particles with a moisture content of ≤75%, and the coarse-grained sludge is tra...
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The invention discloses a process for harmless treatment of solid drilling waste. The process comprises the following steps: (a) dehydration of sludge: a step of subjecting drilling rock debris and sludge to spin-drying and dehydration so as to obtain coarse-grain sludge and sewage containing fine grains; (b) separation of fine-grain sludge: a step of subjecting the sewage containing fine grains to sludge-water separation so as to obtain qualified sewage and the fine-grain sludge; (c) high-temperature pyrolysis of solid waste sludge: a step of conveying solid waste and the coarse-grain and fine-grain sludge at a well field to a compound sludge high-temperature pyrolysis apparatus for preheating and dehydration, stoving, drying and pyrolysis, wherein the conveying direction of the coarse-grain sludge is opposite to the flowing direction of a high-temperature hot-air heat source; (d) separation of dust-containing exhaust gas; (e) treatment of ultrafine dust particles; and (f) secondary high-temperature pyrolysis: a step of carrying out secondary high-temperature pyrolysis on the ultrafine dust particles. The process for harmless treatment of solid drilling waste in the invention has the advantages of high pyrolysis efficiency and low operation cost and can truly realize thorough volume reduction and harmless and recycling treatment of solid drilling waste.
Description
technical field [0001] The invention relates to the field of oil drilling water-based sludge treatment, in particular to a process for harmlessly treating drilling solid waste. Background technique [0002] Oil drilling water-based sludge is a waste mud with no calorific value, which contains natural soluble salts, barite powder, bentonite and other solid particles, suspended matter, polyacrylamide, sulfonated asphalt, hydrogen sulfide, Microorganisms, colloids, bacteria, germs, cysts, toxic and harmful pollutants, etc., as well as chemical additives such as acids, oxygen scavengers, lubricants, bactericides, and scale inhibitors injected into the formation. At present, the methods for sludge treatment mainly include biodegradation sludge treatment method, chemical agent acid-base neutralization (commonly known as: desorption) treatment method, sludge solidification sludge treatment method, sludge drying treatment method and sludge Incineration treatment methods, high-tem...
Claims
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IPC IPC(8): C02F11/12C02F11/10C02F1/00B01D50/00B01D53/78B01D53/50B01D53/68B09B3/00B09B5/00
CPCY02W10/40
Inventor 陆骏王春生代平尹晓伟
Owner 陆骏