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Oil field sludge treatment method

A technology for oilfield sludge and treatment methods, which is applied in sludge treatment, water/sludge/sewage treatment, pyrolysis treatment of sludge, etc. It can solve the problems of high treatment cost and frequent process flow, and achieve the reduction of thermal analysis temperature , Improve the removal efficiency, improve the effect of air permeability

Inactive Publication Date: 2017-08-18
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are overall problems such as high processing costs, long process flow, and secondary pollution.

Method used

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  • Oil field sludge treatment method
  • Oil field sludge treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Take 10kg oilfield sludge, and make 200g specific surface area 360m 2 / g, activated alumina particles with a specification of Φ8-10 are added to the oilfield sludge; after mixing and stirring evenly, the oilfield sludge mixture is obtained;

[0028] 2. Put the oilfield sludge mixture into the pyrolyzer with heating device of the vacuum desorption device. The compression device on the upper part of the desorber of the device pressurizes the desorber vertically downward, applying a pressure of 20Mpa, and the water in the oilfield sludge flows out through the sieve plate at the lower part of the desorber with a heating device and enters the liquid collection tank. The organic matter in the sludge is pyrolyzed and removed under the action of heating and extrusion, and enters the condensing device for recovery to obtain pyrolysis oil;

[0029] 3. The gas recovered and treated by the condensing device is sent into the atmosphere through a vacuum pump; the dried residue af...

Embodiment 2

[0031] 1. Take 10kg oilfield sludge, and make 200g specific surface area 360m 2 / g, activated alumina particles with a specification of Φ8-10 are added to the oilfield sludge; after mixing and stirring evenly, the oilfield sludge mixture is obtained;

[0032] 2. Put the oilfield sludge mixture into the pyrolyzer with heating device of the vacuum desorption device. The compression device on the upper part of the desorber of the device pressurizes the desorber vertically downward, applying a pressure of 10Mpa, and the water in the oilfield sludge flows out through the sieve plate at the lower part of the desorber with a heating device and enters the liquid collection tank. The organic matter in the sludge is pyrolyzed and removed under the action of heating and extrusion, and enters the condensing device for recovery to obtain pyrolysis oil;

[0033] 3. The gas recovered and treated by the condensing device is sent into the atmosphere through a vacuum pump; the dried residue af...

Embodiment 3

[0035] 1. Take 10kg oilfield sludge, and make 200g specific surface area 360m 2 / g, activated alumina particles with a specification of Φ8-10 are added to the oilfield sludge; after mixing and stirring evenly, the oilfield sludge mixture is obtained;

[0036] 2. Put the oilfield sludge mixture into the pyrolyzer with heating device of the vacuum desorption device. The compression device on the upper part of the desorber of the device pressurizes the desorber vertically downward, applying a pressure of 15Mpa, and the water in the oilfield sludge flows out through the sieve plate at the lower part of the desorber with a heating device and enters the liquid collection tank. The organic matter in the sludge is pyrolyzed and removed under the action of heating and extrusion, and enters the condensing device for recovery to obtain pyrolysis oil;

[0037] 3. The gas recovered and treated by the condensing device is sent into the atmosphere through a vacuum pump; the dried residue af...

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Abstract

The invention provides an oil field sludge treatment method. The oil field sludge treatment method comprises the following steps: firstly excavating oil field sludge from an oil field, adding activated aluminum oxide particles into the oil field sludge in a certain proportion, and uniformly mixing, so as to obtain an oil field sludge mixture; putting the oil field sludge mixture into a pyrolyzer of a vacuum desorption device, vertically downward pressurizing the pyrolyzer by virtue of a compression device at the upper part of the pyrolyzer with a pressure of 10MPa-20MPa, and introducing the oil field sludge mixture into a condensing device, and recycling to obtain pyrolysis oil, wherein the temperature is controlled at 350-450 DEG C, the treatment time is controlled at 20-30 minutes, the internal pressure of a vacuum reactor is controlled at 20kpa, moisture in the oil field sludge flows into a liquid collection tank through a sieve hole plate at the lower part of the pyrolyzer, and organic matters in the oil field sludge are pyrolyzed and removed under the heating and extruding effects; introducing gas recycled by virtue of the condensing device into atmosphere; and taking out treated dried residues from the desorption device. The whole implementation process of the invention is simple, easy to operate and high in treatment efficiency and has no secondary pollution.

Description

[0001] Technical field: [0002] The invention relates to the technical field of solid waste treatment, in particular to a treatment method for oilfield sludge. [0003] technical background: [0004] Oily sludge is oily solid waste produced during oil extraction, transportation, refining and oily sewage treatment. Generally, the oil content in sludge is 10-50%, and the water content is 40-90%. In my country's petrochemical industry, an average of 800,000 tons of tank bottom sludge and pool bottom sludge are produced every year, and oily sludge produced in oil fields is 100,000 tons per year. Above, the oilfield produces about 150,000 tons of oily sludge every year, and Henan Oilfield produces 5×104m 3 Oily sludge. Oily sludge contains a large amount of benzene series, phenols, anthracene, pyrene and other odorous and toxic substances. If the oily sludge is not treated, it will not only pollute the environment, but also cause a waste of resources. The treatment of oily sludge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/10C02F103/10
CPCY02W10/40C02F11/00C02F11/10C02F2103/10
Inventor 易师张柏林
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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