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Oily sludge drying agent, and preparation and application methods thereof

An application method and drying agent technology, applied in chemical instruments and methods, sludge treatment, fixed/solidified sludge treatment, etc., can solve the problems of high processing cost, low drying efficiency, high viscosity, etc., and achieve the preparation cost. Low cost, easy availability of raw materials, good economical effect

Active Publication Date: 2018-10-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the problems of high viscosity, low drying efficiency and high processing cost in the drying process of oily sludge after dehydration in the prior art, the present invention provides a drying agent for oily sludge and its preparation and application method. Industrial solid waste such as fly ash, and compound effective ingredients such as limestone, gypsum and lignosulfonate, greatly improve the drying efficiency of oily sludge and effectively reduce the amount of drying agent added

Method used

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  • Oily sludge drying agent, and preparation and application methods thereof

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preparation example Construction

[0036] The preparation method of the above-mentioned oily sludge desiccant is as follows: fly ash, limestone, gypsum and additives are added in a certain proportion to the stirring homogeneous kettle, fully mixed and homogenized, and the oily sludge is obtained after uniform mixing. agent.

[0037] The application method of the oily sludge drying agent described in the present invention: use a dry powder dosing device to add the oily sludge drying agent, then use a kneader to fully mix the oily sludge drying agent and oily sludge, and then send into the oily sludge drying machine; the mass percentage of the added oily sludge drying agent in the undried oily sludge is 1-10%, and the preferred range is 2-5%.

preparation Embodiment 1

[0039] The drying agent and preparation method thereof for oily sludge drying described in the present invention are as follows:

[0040] (1) fly ash, its mass percentage composition is 70wt%;

[0041] (2) limestone, its mass percentage composition is 9.5wt%;

[0042] (3) Gypsum, its mass percentage composition is 20wt%;

[0043] (4) auxiliary agent, the mass percentage of sodium lignosulfonate is 0.5wt%.

[0044] Add it into the stirring homogeneous kettle according to the above ratio, and fully mix and homogenize. The evenly mixed material is the oily sludge desiccant, called 1# desiccant.

preparation Embodiment 2

[0046] The drying agent and preparation method thereof for oily sludge drying described in the present invention are as follows:

[0047] (1) fly ash, its mass percentage composition is 60wt%;

[0048] (2) limestone, its mass percentage composition is 30wt%;

[0049] (3) gypsum, its mass percentage composition is 9wt%;

[0050] (4) auxiliary agent, the mass percentage of sodium lignosulfonate is 1wt%.

[0051] Add it into the stirring homogeneous kettle according to the above ratio, and fully mix and homogenize. The evenly mixed material is the oily sludge desiccant, called 2# desiccant.

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Abstract

The invention specifically relates to an oily sludge drying agent, and preparation and application methods thereof, belonging to the technical field of solid waste treatment. According to the oily sludge drying agent and the preparation and application methods thereof in the invention, oily sludge drying efficiency is greatly improved and the addition amount of the drying agent is effectively reduced by comprehensively utilizing industrial solid waste such as fly ash and compounding effective components such as limestone, gypsum and lignosulfonate; raw materials are easily available, and preparation cost is low; and when applied to drying of oily sludge, the oily sludge drying agent can greatly reduce the outward transportation volume and treatment cost of the oily sludge and has good economic, environmental and application value.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to an oily sludge drying agent and a preparation and application method thereof. Background technique [0002] Oily sludge, also known as "oil sludge", is sludge mixed with heavy oil such as crude oil, various refined oils, and residual oil. Referring to the "National List of Hazardous Wastes", oily sludge is a hazardous waste. Oily sludge comes from the processes of oilfield exploitation, petroleum transportation and storage, petroleum refining, and various oily sewage treatment processes. The composition of these oily sludges is different, and the volume of oily sludge is huge. , Water forms a very stable emulsification system. [0003] The treatment of oily sludge is based on the principle of reduction, resource utilization and harmless treatment. Sludge reduction refers to the use of physical, chemical, and biochemical means to minimize the amount of biological ...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/14C02F101/32
CPCC02F11/008C02F11/14C02F2101/32
Inventor 魏令勇李昕阳邱松杨芳芳万国晖
Owner CHINA PETROLEUM & CHEM CORP
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