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A kind of treatment method of oil mud sand

A treatment method and technology of oily sludge sand, applied in sludge treatment, immiscible solvent sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of long process, large wear of mechanical equipment and poor separation effect of oily sludge and other problems to achieve the effect of ensuring the separation effect and reducing mechanical wear

Active Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problems of long flow process, large wear and tear on mechanical equipment, and poor separation effect of oily sludge in the prior art, the present invention provides a treatment method for oily sludge, which utilizes a purpose-designed feeder, washing machine, etc. The sander homogenizes and desands the oily sludge, and then uses the impeller agitator to flocculate and separate to obtain high-oily sludge and low-oily sludge with ideal separation effects; the treatment process has mild operating conditions, saves costs, reduces safety risks, There is no secondary environmental protection problem, and the processing efficiency is greatly improved

Method used

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  • A kind of treatment method of oil mud sand
  • A kind of treatment method of oil mud sand
  • A kind of treatment method of oil mud sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The raw materials used in this example are taken from the oil sludge sand in the produced fluid produced by a combined station. The properties of the raw materials were analyzed, and the analysis results were shown in Table 1.

[0053] Table 1.

[0054]

[0055] The above-mentioned sludge sand is processed in turn by a feeder, a sand washer and an impeller agitator. The schematic structural diagrams of the feeder and the sand washer are as follows: figure 1 shown:

[0056] The upper part of the feeder barrel 10 is a cylindrical tank body and the lower part is a conical tank body, the feeder inlet 13 is arranged in the top center of the cylindrical tank body, and 8 pieces of staggered arrangement are arranged on both sides of the inner wall above the tank body. The feeder distribution plate 11, the feeder distribution plate 11 is arranged in the range from the top of the cylindrical tank to 1 / 2 the height of the cylindrical tank from the top; the feeder distribution...

Embodiment 2

[0064] In this embodiment, the scum produced by a sewage treatment plant of a refinery is used as the raw material of oil sludge. The properties of the raw materials were analyzed, and the analysis results were shown in Table 3.

[0065] table 3.

[0066]

[0067] The above-mentioned sludge sand is processed in turn by a feeder, a sand washer and an impeller agitator. The schematic structural diagrams of the feeder and the sand washer are as follows: figure 1 shown:

[0068] The structure of the feeder and the sand washer is different from that in Example 1, the height of the cylindrical tank of the feeder and the sand washer is different, and the distribution plate 11 of the feeder is 7 pieces, so as to be 60° to the horizontal direction. The height of the gap between the two adjacent feeder distribution plates 11 on the same side is 200mm; the sand washer distribution plate 21 is inclined downward at 15° to the horizontal direction, and the two adjacent sand washing pla...

Embodiment 3

[0074] The raw materials used in this example were mixed with the raw materials used in Example 1 and Example 2 as oil sludge sand raw materials by equal quality. The properties of the raw materials were analyzed, and the analysis results were shown in Table 5.

[0075] table 5.

[0076]

[0077] The above-mentioned sludge sand is processed in turn by a feeder, a sand washer and an impeller agitator. The schematic structural diagrams of the feeder and the sand washer are as follows: figure 1 shown:

[0078] The structure of the feeder and the sand washer is different from that in Example 1, the height of the cylindrical tank of the feeder and the sand washer is different, and the distribution plate 11 of the feeder is 9 pieces, so as to be 45° to the horizontal direction. The height of the gap between the two adjacent feeder distribution plates 11 on the same side is 260mm; the sand washer distribution plate 21 is inclined downward at 15° to the horizontal direction, and th...

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Abstract

A method for treating oily mud sand, comprising the following steps: adding oily mud sand to a specially designed feeder, forcibly mixing with water after passing through a distribution plate, to obtain homogenization treatment, and then transporting the treated material to a specially designed The sand washer, under the impact of multi-stage distribution plate and water inlet, separates coarse sand particles with large particle size, and then transports them to the impeller agitator. High oily sludge, lower sedimentation layer as low oily sludge. The feeder and the sand washer adopted in the present invention can fully homogenize the oily mud sand and separate the coarse sand through the setting of the multi-stage distribution plate and the water inlet mixing mode. The oil content in the high oily sludge separated by the method of the invention is ≥40%, and the moisture content is ≤50%; the oil content in the low oily sludge is ≤6%, and the moisture content is ≤40%.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a method for treating oily mud sand. Background technique [0002] Oily sludge is a hazardous waste generated in the process of petroleum refining and product manufacturing. At present, the processes involved in the patents mainly focus on stirring, centrifugation and high temperature treatment. [0003] Patent CN105668966 discloses a short-flow sludge treatment system. The core treatment method of the system is the ultrasonic-assisted hot water washing method, which ultrasonically treats oily mud sand while stirring. The disadvantages of this method are as follows: (1) Even if there is ultrasonic cavitation Auxiliary, the treatment effect of the hot water washing method is still very limited; (2) the oil mud sand from different sources enters the device, which will cause great wear and tear on the moving parts such as the stirring paddle, and the mechanical life is very limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C10G1/00C10G1/04
CPCC02F11/00C02F11/002C10G1/00C10G1/04C10G2300/1003C02F2303/06
Inventor 孙浩程回军刘春阳李宝忠王宜迪
Owner CHINA PETROLEUM & CHEM CORP