Recovery treatment method of waste oil sludge

A technology for recycling and processing oil sludge, which is applied in the field of recycling and processing waste oil sludge and waste oil sludge, and can solve the problems of difficulty in achieving oil-water separation effect, high processing cost and poor processing effect.

Active Publication Date: 2021-11-30
GUANGZHOU S SUNNY ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many recycling methods, they have not been widely promoted due to shortcomings such as poor pertinence, poor treatment effect, high treatment cost, and inability to meet the requi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] The method of preparing sodium silicate composition is: sodium silicate, sodium bicarbonate, sodium phosphate, sodium ethylenediamine, and mixing of sodium ethylenediamine and mixing of nitrogen triacetate, then add fat alcohol polyoxyethylene The ether is mixed with the emulsion and mixed mixed with a digestive agent. Sodium silicate composition;

[0030] 2) One-time oil: adding the waste cream with the sodium silicate composition to hot water, mix stirring is uniform, and then allowed to obtain a rifase liquid located at the upper layer and a water in the lower layer, then perform oil water separation treatment After the oil separation treatment is completed, the separated primary rich liquid is filtered with a rich liquid, and then a rich liquid is filtered, and the filtration is completed, and the separated wastewater is obtained.

[0031] 3) Secondary oil: The primary filter residue obtained by step 2) is added to the other batch of sodium silicate composition to anoth...

Example Embodiment

[0063] Example 1

[0064] The recovery process method of a waste oil in Example 1 includes the steps of sequentially performed:

[0065] 1) Preparation of sodium silicate composition: Sodium hydrorate composition is made of a plurality of raw materials, the raw material of sodium silicate composition comprises: 100 parts by mass of sodium silicate, 5 parts by mass of sodium bicarbonate, 2 parts by mass of sodium dihydrogen phosphate, 0.3 parts by mass of diethylenediamine tetracetate, 0.2 parts by mass of appended nitrocetate, 3 parts by mass of fatty alcohol polyoxyethylene ether, 3 parts by mass of ruiculent milk;

[0066] The method of preparing sodium silicate composition is: sodium silicate, sodium bicarbonate, sodium phosphate, sodium ethylenediamine, and mixing of sodium ethylenediamine and mixing of nitrogen triacetate, then add fat alcohol polyoxyethylene The ether is mixed with the emulsion and mixed mixed with a digestive agent. Sodium silicate composition;

[0067]2) O...

Example Embodiment

[0081] Example 2

[0082] The recovery process of the waste oil in Example 2, including the steps of the following:

[0083] 1) Preparation of sodium silicate composition: Sodium silicate composition is made of a plurality of raw materials, and the raw material of sodium silicate composition comprises: 100 parts by mass of sodium silicate, 10 parts by mass of sodium bicarbonate, 5 parts by mass of sodium dihydrogen phosphate, 0.2 parts by mass of diethylenediamine tetra acetate, 0.3 parts by mass of nitrogen-based triacetic acid, 2 parts by mass of fatty alcohol polyoxyethylene ether, 5 parts by mass of ruiculent milk;

[0084] The method of preparing sodium silicate composition is: sodium silicate, sodium bicarbonate, sodium phosphate, sodium ethylenediamine, and mixing of sodium ethylenediamine and mixing of nitrogen triacetate, then add fat alcohol polyoxyethylene The ether is mixed with the emulsion and mixed mixed with a digestive agent. Sodium silicate composition;

[0085] ...

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Abstract

The invention provides a recovery treatment method of waste oil sludge, which comprises the following steps: preparing a sodium silicate composition from the following raw materials in parts by mass: 90-110 parts of sodium silicate, 5-10 parts of sodium bicarbonate, 2-5 parts of sodium dihydrogen phosphate, 0.2-0.5 part of disodium ethylene diamine tetraacetate, 0.2-0.5 part of nitrilotriacetic acid, 2-4 parts of fatty alcohol-polyoxyethylene ether and 2-5 parts of a demulsifier; and then mixing waste oil sludge, the sodium silicate composition and hot water for primary oil extraction, then mixing primary filter pressing residues, the sodium silicate composition and hot water for secondary oil extraction, then dehydrating, decolorizing and drying primary oil-rich liquid and secondary oil-rich liquid, performing wastewater treatment on primary wastewater and secondary wastewater, and subjecting the secondary filter pressing residues to pyrolysis treatment. The oil product recovery rate exceeds 97 wt%, and water is discharged after reaching the standard.

Description

technical field [0001] The present invention relates to the technical field of resource recovery and treatment of waste oil sludge, in particular to a recycling and treatment method of waste oil sludge, especially to a treatment method of water-insoluble (oil-based) waste oil sludge, and the present invention is mainly used for cutting fluid Treatment of waste sludge. Background technique [0002] Cutting fluid (coolant) is an industrial liquid used to cool and lubricate cutting tools and workpieces during metal cutting and grinding, and to lubricate and cool the cutting process in metal processing or machine manufacturing. , cleaning, antirust and other functions. [0003] After the cutting fluid is recycled for a period of time in the process of metal processing and machinery manufacturing, bacteria in the air or bacteria from other places will multiply in the cutting fluid, resulting in a continuous decline in the quality of the cutting fluid and turning it into waste cu...

Claims

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Application Information

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IPC IPC(8): C10M175/00C02F11/00C02F11/10C02F9/06C02F103/16
CPCC10M175/0016C10M175/0025C10M175/00C02F11/00C02F11/10C02F9/00C02F1/4672C02F1/66C02F1/52C02F1/001C02F2001/007C02F1/78C02F1/725C02F1/461C02F1/40C02F2103/16Y02W10/40
Inventor 李小琴魏完星徐成龙姚谋清钟洋卢紫君邹超鹏
Owner GUANGZHOU S SUNNY ENVIRONMENTAL PROTECTION TECH CO LTD
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