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Method for promoting removal of oil in oily sludge

A sludge and oil separation technology, applied in dewatering/drying/concentrating sludge treatment, mining wastewater treatment, etc., can solve the problem of high equipment requirements, and achieve high treatment efficiency and good treatment effect.

Inactive Publication Date: 2020-11-03
江苏联兴成套设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent uses a physical method, which requires high equipment

Method used

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  • Method for promoting removal of oil in oily sludge

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for promoting the removal of oil from oily sludge, comprising the steps of:

[0019] a) Take 500-1000g of oily sludge after tempering-mechanical separation in the rapid drying machine, and measure the oil content of the sludge at this time as W1.

[0020] b) Under the condition that the reaction time is 15 minutes, set the working vapor pressure of the fast drying machine to 150kPa, 200kPa, 300kPa, 400kPa, 500kPa, 600kPa and 700kPa, 750kPa respectively. Under different conditions, the sludge in the above a is subjected to steam pressurized injection rapid drying treatment. After the treatment, the oil content of the sludge under different working steam pressures was measured respectively, and recorded as W2. At this time, the oil removal rate of the sludge was (W2-W1) / W1*100%.

[0021] From figure 1 It can be seen from the figure that with the increase of the working steam pressure, the oil removal rate of the sludge increases gradually. When the working stea...

Embodiment 2

[0023] A method for promoting the removal of oil from oily sludge, comprising the steps of:

[0024] a) Take 500-1000g of oily sludge after tempering-mechanical separation in the rapid drying machine, and measure the oil content of the sludge at this time as W1.

[0025] b) Under the condition of working vapor pressure of 500kPa, set the reaction time of the quick drying machine as 5min, 10min, 15min, 20min, 25min, 30min, 35min, 40min respectively. Under different conditions, the sludge in the above a is subjected to steam pressurized injection rapid drying treatment. After the treatment, the oil content of the sludge was measured at different reaction times, which was recorded as W3. At this time, the oil removal rate of the sludge was (W3-W1) / W1*100%.

[0026] From figure 2 It can be seen that with the prolongation of the reaction time, the deoiling of the sludge first increases and then decreases, and reaches the maximum value at 15 minutes, which is 92%. It shows that ...

Embodiment 3

[0028] A method for promoting the removal of oil from oily sludge, comprising the steps of:

[0029] a) Take 500-1000g of oily sludge after tempering-mechanical separation in the rapid drying machine, and measure the oil content of the sludge at this time as W1.

[0030] b) Under the condition that the reaction time is 15 minutes, set the working steam pressure of the rapid drying machine to 500kPa, and carry out steam pressurized injection rapid drying treatment on the sludge in the above a. After the treatment, the oil content was measured.

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PUM

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Abstract

The invention discloses a method for promoting removal of oil in oily sludge. The method comprises the following steps: a, putting the oily sludge subjected to thermal refining mechanical separation treatment into a rapid drying machine; b, performing treatment under the conditions of set working vapor pressure and reaction time, and finishing oil removal; and c, measuring the oil content of the sludge before and after the reaction, and calculating the oil removal rate. The method can effectively remove oil in the oily sludge, is simple to operate and high in treatment efficiency, does not pollute the environment, and is an efficient, convenient and environment-friendly method.

Description

technical field [0001] The invention relates to a method for promoting the removal of sludge oil, and belongs to the technical field of sludge treatment. Background technique [0002] A large amount of oily sludge is produced in the process of crude oil extraction, oil storage, transportation and refining, which is one of the main pollutants in this process. According to statistics, the total annual output of oily sludge in my country has reached 5 million tons. The composition of oily sludge is complex, generally containing a large amount of water, oil, mud, inorganic salts, bacteria, heavy metals and some refractory flocculants, corrosion inhibitors, scale inhibitors, etc. Oily sludge has high viscosity, high water content, poor stability, is difficult to settle, has a strong pungent odor, and is difficult to handle. If it is discharged directly without treatment, the random stacking of oil sludge not only takes up a lot of land resources, but also pollutes the soil and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13
CPCC02F11/13C02F2103/10
Inventor 王志斌许云峰杨贵东齐随涛于云松周云峰程永伟邢涛
Owner 江苏联兴成套设备制造有限公司