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Treatment method and treatment device of oil sludge sand

A treatment method and oil sludge sand technology, which is applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve the problems of high energy consumption in incineration, difficult settlement and dehydration, leakage, leakage, etc. and other problems, to achieve the effect of reducing operating costs, simple process, and clear water phase

Inactive Publication Date: 2016-08-31
SHANGHAI XINGSHI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water phase produced by the front-end steam aeration contains a large amount of oil sludge, which is difficult to deal with, and the oil field adopts the polymer polyacrylamide (PAM) oil recovery process. Due to the existence of PAM, the oil sludge has a complex structure of water-in-oil and oil-in-water. As a result, a large amount of heavy oil sludge in the water phase is difficult to settle and dewater, and the moisture content of the formed mud cake is greater than 85%, which causes leakage during transportation, high energy consumption and high cost for incineration disposal

Method used

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  • Treatment method and treatment device of oil sludge sand

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Effect test

Embodiment 1

[0060] An oil field produces oil sludge sand

[0061] The oily sand is universal and representative in China. Currently there is no good way to deal with it, and the treatment efficiency is particularly low, especially because the large amount of water produced after removing the sand and oil-polymer mixture still contains heavy oil, polymers, a small amount of sand, and mud. , It is difficult to dispose of. Only after the heavy oil sludge and water are clearly separated can the follow-up treatment of heavy oil sludge be facilitated, and the water can be reused. Water without heavy oil sludge can also be used for oilfield sewage after repeated use. Treatment plant disposal. By adopting the treatment process of the invention, the water content of the sludge containing heavy oil can be reduced to below 75%.

[0062] Process flow: In the early stage, the weight ratio of oil sludge sand: water = 1:3 is mixed and diluted, with a total weight of 4 tons, and most of the sand and oil-p...

Embodiment 2

[0065] Aged oil mud sand left over from the history of an oilfield

[0066] Due to the long aging time and high degree of hardening, the aged oil sludge sand is very difficult to handle. First, the aged oil sludge sand needs to be pulverized and refined, then diluted with water and soaked in a certain proportion, and finally disposed of according to the treatment process of new oil sludge sand.

[0067] Process flow: Take 100g of crushed aged oil sludge sand and 900g of water, mix and dissolve them in a 1L beaker, and stir thoroughly; add natural polymer compound components, polyferric sulfate, and calcium hydroxide successively, among which the natural polymer compound components 1.2‰ (volume percentage), the total concentration of polyferric sulfate is 6mmol / L, adjust the pH value to 7.5 with calcium hydroxide; mechanically stir for 2min; stand for 40min; the lower layer of sediment is dehydrated by vacuum filtration.

[0068] Results: After drying and before and after dryin...

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Abstract

The invention discloses a treatment method of oil sludge sand. The treatment method includes adopting natural high polymer compound components to modify the oil sludge sand, and specifically includes following steps: step 1, placing the oil sludge sand in water to obtain a diluted water body containing an oil-sludge mixture; step 2, dissolving a modifying agent in the diluted water body to obtain a water solution; step 3, stirring the water solution, standing for the water solution to be stratified into light oil on the upper layer, a clear water phase on the middle layer and modified sludge containing heavy oil on the lower layer; step 4, collecting overflow of the light oil on the upper layer; dewatering the oil sludge containing the heavy oil on the lower layer through a mechanical dewatering method to obtain a sludge cake. By modifying the sludge, the treatment method jumps out of a strong circle depending on conventional sludge-removing agent polymer polyacrylamide (PAM), and water content is remarkably lowered in a dewatering link, so that energy consumption during subsequent sludge drying can be reduced, and fixed investment and other related operation expenses can be lowered. The invention further discloses a treatment device of the oil sludge sand.

Description

technical field [0001] The invention relates to a treatment method of oil sludge sand. The invention also relates to a processing device for oil sludge. Background technique [0002] Oil extraction has caused soil pollution of about 3% of China's land area. During the "13th Five-Year Plan" period and subsequent periods, the oil and sand produced by oil extraction must be separated and incinerated for harmless treatment. Stacking, landfill disposal, and the old oil sludge sand accumulated in the environment due to historical reasons must also be gradually cleaned up. [0003] A large amount of oil sludge sand will be deposited at the bottom of the crude oil storage tank at the oil mining site. The oil sludge sand is composed of heavy oil, a small amount of light oil, soil, sand, etc., and needs to be cleaned and disposed of regularly. [0004] The ideal goal of oil sludge sand treatment is to separate oil, mud and sand. The first step in oil sludge sand disposal is to sepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/12C02F11/14C10G1/00
CPCC02F11/00C02F11/121C02F11/122C02F11/123C02F11/127C02F11/14C02F2303/06C10G1/00C10G2300/1003
Inventor 葛丽莎朱海雷周汉涛
Owner SHANGHAI XINGSHI ENVIRONMENTAL PROTECTION TECH CO LTD
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