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Combined treatment method for oilfield solid waste

A solid waste and combined treatment technology, applied in the field of resources and environment, can solve the problems of increasing oil field solid waste treatment costs, waste of resources, repeated purchase of equipment, etc., achieve good environmental and social benefits, save operating costs, and reduce equipment investment Effect

Inactive Publication Date: 2011-02-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, oilfield enterprises use relatively independent treatment processes to treat oily sludge, industrial solid waste and domestic waste. This treatment method not only causes repeated purchase of some equipment, but also increases the treatment cost of oilfield solid waste, wasting more resources

Method used

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  • Combined treatment method for oilfield solid waste

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Effect test

Embodiment 1

[0039] The annual production of oily sludge, industrial solid waste and domestic waste by an oilfield enterprise is 4800m 3 , 489 tons and 475 tons. Due to the low temperature during the freezing period in winter in the area where the oilfield is located, the heat loss of equipment operation is large and the economy is poor, so the regular operation mode is adopted (May 16th to September 15th every year, and the operation period is 120 days). According to the annual production data of oily sludge, the treatment volume of oily sludge is set at 1.7m 3 / h. After the oily sludge is sorted, water is added to the oily sludge pretreatment tank at a rate of 1020kg / h. At the same time, the oily sludge is stirred and kept warm, and the oily sludge becomes fluidized sludge. Then the fluidized sludge enters the oily sludge conditioning tank, and 1020kg / h of water is added to the tank, and sodium dodecylbenzenesulfonate is added to the oily sludge conditioning tank through the dosing dev...

Embodiment 2

[0042] The annual production of oily sludge, industrial solid waste and domestic waste by an oilfield company is 14500m3 3 , 1260 tons and 915 tons. The oilfield solid waste treatment plant adopts a regular operation mode (from May 1st to September 30th each year, the operation period is 150 days). According to the annual output data of oily sludge, the treatment volume of oily sludge is set at 4.1m 3 / h. After the oily sludge is sorted, water is added to the oily sludge pretreatment tank at a rate of 2460kg / h. At the same time, the oily sludge is stirred and kept warm, and the oily sludge becomes fluidized sludge. Then the fluidized sludge enters the oily sludge conditioning tank, and 2460kg / h of water is added to the tank, and polyoxyethylene lauryl ether is added to the oily sludge conditioning tank through the dosing device, and the addition amount is 0.02% of the weight of the oily sludge %, while stirring and heating the oily sludge to keep the temperature of the oily...

Embodiment 3

[0045] The annual output of oily sludge, industrial solid waste and domestic waste of an oilfield enterprise is 8600m 3 , 778 tons and 746 tons. The oilfield solid waste treatment plant adopts a regular operation mode (from May 16th to September 16th every year, the operation period is 120 days). According to the annual output data of oily sludge, the treatment volume of oily sludge is set at 3.0m 3 / h. After the oily sludge is sorted, water is added to the oily sludge pretreatment tank at a rate of 1800kg / h. At the same time, the oily sludge is stirred and kept warm, and the oily sludge becomes fluidized sludge. Then the fluidized sludge enters the oily sludge conditioning tank, and 1800kg / h of water is added to the tank, and sodium dodecylbenzenesulfonate and polyoxyethylene lauryl ether are added to the oily sludge conditioning tank through a dosing device. The mixture (the two each account for 50%) is added in an amount of 0.03% of the weight of the oily sludge, and the...

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Abstract

The invention provides a new combined treatment process for oilfield solid waste (oil sludge, industrial solid waste and household garbage). In the process, liquid-solid separation is performed on the oil sludge of an oilfield by adopting a conditioning-centrifugal separation process; the separated liquid enters oil-water separation equipment constructed on the oilfield for recovering crude oil; the oil recovery rate is up to 65 to 90 percent; after drying separated solid residue, the separated solid residue and pre-crushed industrial solid waste and household garbage are mixed and enter a countercurrent-type rotary gasification incinerator; combustible components in the oilfield solid waste are decomposed and gasified into combustible gases which are combusted partially in the incinerator; the combustible gases are combusted completely in a secondary combustion chamber; high-temperature smoke gas afterheat is recovered by a conduction oil afterheat boiler and air preheating equipment; and low-temperature smoke gas of which the afterheat is recovered is harmlessly exhausted after being treated by a sharp-quenching deacidification tower, an activated carbon adsorption tower and a bag-type dust remover. The process realizes the purposes of decrement, harmlessness and resources of oilfield solid waste treatment.

Description

technical field [0001] The invention relates to the technical field of resources and the environment, in particular to a combined treatment method for oily sludge, industrial solid waste and domestic garbage reduction, harmlessness and resource utilization. Background technique [0002] Various oilfield enterprises will produce various solid wastes such as oily sludge, industrial solid waste and domestic garbage during the exploration and production of crude oil and the production and life of oilfield workers. [0003] Oily sludge is an oily solid and muddy substance (also known as oilfield sludge) produced during oil extraction, transportation, refining, and oily sewage treatment. It has a large amount of production, high oil content, high heavy oil components, It has the characteristics of few comprehensive utilization methods and high processing difficulty. In addition to a large amount of residual oil, oily sludge also contains benzene series, phenols, anthracene, pyren...

Claims

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Application Information

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IPC IPC(8): F23J15/02F23G7/00
Inventor 胡建杭王华刘慧利祝星王超
Owner KUNMING UNIV OF SCI & TECH
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