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Process for curing and dehydrating scum bottom sludge

A bottom sludge and scum technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of inability to achieve rapid dehydration of scum and bottom sludge, small processing capacity, large investment, etc., and achieve easy stacking, treatment, and dehydration The effect of high speed and low investment

Inactive Publication Date: 2012-03-28
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the existing technology that cannot realize rapid dehydration of scum and sediment, small processing capacity and large investment

Method used

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  • Process for curing and dehydrating scum bottom sludge
  • Process for curing and dehydrating scum bottom sludge

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Embodiment Construction

[0011] As shown in the accompanying drawing, a kind of scum bottom sludge solidification and dehydration process, the process steps are as follows: after the scum bottom sludge is metered by a metering pump, it is pumped into the initial mixing agitator, according to curing agent: scum bottom sludge=3: Take the curing agent at a ratio of 17, and the curing agent is adjusted and propelled into the primary mixing agitator by the screw metering propeller according to the ratio, the stirring speed is 50 rpm, stirred for 5 minutes, and discharged into the secondary mixing agitator, the stirring speed is 150 rpm Minutes, stirring for 10 minutes, the scum bottom sludge after modification and solidification is converted from a colloidal structure to a crystal structure, and then transported to the drying site by a slurry pump, and maintained for 1-3 days, and the scum bottom sludge after forming a crystal structure, so Part of the water content is crystallized, and the other part evapo...

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Abstract

The invention relates to the technical field of treatment of oil sludge in oil fields, in particular to a process for curing and dehydrating scum bottom sludge. The process comprises the following steps of: metering the scum bottom sludge by a metering pump and pumping the scum bottom sludge to an initial mixing stirrer, wherein a curing agent is adjusted and boosted into the initial mixing stirrer by a spiral metering booster according to a proportion, and stirring at a speed of 50 r / m for 5 to 30 minutes; discharging the mixture into a secondary mixing stirrer and stirring at a speed of 150r / m for 10 to 15 minutes; converting the modified and cured scum bottom sludge from a colloid structure into a crystalline structure, and conveying to an air-drying place by a slurry pump, and conserving for 1 to 3 days until the water moisture content of the modified scum bottom sludge is reduced to be less than 40 percent and the heat value is more than 3,000 Kcal / kg; and finishing the process.By the process, quick dehydration for the scum bottom sludge and quantity reduction are realized; and the oily components of the cured scum bottom sludge are distributed uniformly, so recycling of the scum bottom sludge can be realized.

Description

Technical field: [0001] The invention relates to the technical field of oilfield sludge treatment, in particular to a process for solidifying and dehydrating scum bottom sludge. Background technique: [0002] Scum and bottom sludge are flocs and sediments formed during the reinjection and reuse treatment of oil extraction wastewater. These substances contain a large amount of aged crude oil, wax, asphaltenes, colloids and suspended solids, and the water content is between 90-99%. Due to its high moisture content, its comprehensive utilization rate is low, and it occupies a large area, which has always troubled the development of enterprises. Solving the dehydration problem of scum and sediment is the best way to realize the resource utilization and reduction of scum and sediment. [0003] At present, the technical methods for treating scum bottom sludge mainly include plate filter press technology, centrifugal separation technology, filter pool concentration technology and...

Claims

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Application Information

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IPC IPC(8): C02F11/14
Inventor 王琦葛会光宋启辉刘付臣刘喜峰周洪山曾魏于向东孔德宁杨东辉
Owner BC P INC CHINA NAT PETROLEUM CORP
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