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Oil sludge treatment method and system

A treatment method and technology of a treatment system, which are applied in the field of sludge treatment methods and systems, can solve the problems of high oil content of residues and incomplete sludge separation, and achieve the effects of reducing water content, facilitating sludge separation and improving efficiency.

Pending Publication Date: 2019-10-15
北京和荣工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is the problem of incomplete separation of sludge and high residue oil content in the existing sludge separation method, thus a sludge treatment method and system are proposed

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  • Oil sludge treatment method and system
  • Oil sludge treatment method and system
  • Oil sludge treatment method and system

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Effect test

Embodiment 1

[0072] Such as image 3 As shown, this embodiment provides a sludge treatment system, including a screening device 1, a demulsification device 2, a flocculation device 3, a dehydration device 4, a thermal device 5, and a cyclone separation device connected in sequence through a sludge conveying pipeline 6. Cooling oil-water separation device 7; wherein, the demulsification device 2 is also provided with a demulsifier feed port, the flocculation device 3 is also provided with an additive feed port, and the dehydration device 4 is also provided with a waste water discharge port, The thermal sensing device 5 is also provided with a superheated steam inlet.

[0073] In the present invention, the sludge is processed sequentially through the screening device 1, the demulsification device 2, the flocculation device 3, the dehydration device 4, the thermal device 5, the cyclone separation device 6, and the cooling oil-water separation device 7, which can effectively solve the problem ...

Embodiment 2

[0094] This embodiment provides a method for treating oily sludge, wherein the oily sludge is oily sludge after sewage treatment in an oil refinery, with a water content of 95%, an oil content of 3%, and a solid content of 2%.

[0095] Including the following steps:

[0096] 1) Add demulsifier dodecyl sulfonic acid at 0.05% by weight of sludge to the sludge, heat to 50°C and stir to make it react fully and let it stand for 20 minutes, then add flocculant PAM at 0.02% by weight of sludge and 5% by weight of sludge The coke powder, continue to stir, make it stand still 2h again after fully reacting, obtain the oil sludge after the pretreatment;

[0097] 2) Transporting the pretreated oil sludge obtained in step 1) to a screw stacker for dehydration treatment to obtain an oil-water mixture and dehydrated oil sludge, wherein the dehydrated oil sludge has a water content of 80%;

[0098] 3) Pass the saturated steam through the superheated steam generator (superheated steam generat...

Embodiment 3

[0102] This embodiment provides a method for treating oil sludge, wherein the oil sludge is tank bottom sludge of an oil refinery, with a water content of 90%, an oil content of 8%, and a solid content of 2%.

[0103] Including the following steps:

[0104] 1) Add demulsifier triethanolamine oleate at 0.01% by weight of sludge to the sludge, heat to 40°C and stir to allow it to fully react and then let it stand for 20 minutes, then add flocculant polyaluminum chloride at 0.02% by weight of sludge and the weight of sludge 1% sawdust, continue to stir, let it fully react and let it stand for 1.5h again to get the pretreated oil sludge;

[0105] 2) transporting the pretreated oil sludge obtained in step 1) to a screw stacker for dehydration treatment to obtain an oil-water mixture and dehydrated oil sludge, wherein the moisture content of the dehydrated oil sludge is 60%;

[0106] 3) Pass the saturated steam through the superheated steam generator (superheated steam generator 9)...

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Abstract

The invention belongs to the technical fields of oil fields, petrochemical industry and hazardous waste environmental protection, and particularly relates to an oil sludge treatment method and system.The oil sludge treatment method comprises the following steps: 1) spraying superheated steam to oil sludge with carbon additives to obtain a mixture of oil-water steam and residues; 2) performing gas-solid separation on the mixture of the oil-water steam and the residues obtained in the step 1) to obtain the oil-water steam and the residues, and performing liquid-liquid separation on the oil-water steam to obtain oil and water. According to the oil sludge treatment method, reduction treatment of the oil sludge is effectively achieved, the residues can be harmless, and secondary pollution canbe prevented.

Description

technical field [0001] The invention belongs to the technical fields of oil field, petrochemical industry, and hazardous waste environmental protection, and in particular relates to an oil sludge treatment method and system. Background technique [0002] Crude oil will produce a large amount of oil sludge in the process of exploitation, refining, storage, etc., which is characterized by containing a variety of toxic and harmful substances, high water content, small solid particles, serious oil-water solid emulsification, and difficult dehydration. The problem of its disposal has always been a problem for oil fields and A major problem for petrochemical companies. In 2008, the state revised the list of hazardous wastes and classified oily sludge (ie oil sludge) as hazardous wastes. Sludge treatment has become a major focus of environmental protection departments at all levels. With the increasingly stringent national environmental protection laws and regulations, the enhanc...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/121C02F11/125C02F11/13C02F11/148
CPCC02F11/148C02F11/00C02F11/13C02F11/125C02F11/121
Inventor 周渊博刘淼王敏裴雪梅李葳王世祥
Owner 北京和荣工程技术有限公司
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