Method for comprehensively processing petroleum acid slag and alkaline residue

A comprehensive treatment, petroleum acid technology, applied in the field of chemical engineering, can solve the problems of petroleum acid residue, alkali residue storage and transportation difficulties, environmental pollution, damage to surrounding farmland and other problems

Active Publication Date: 2008-12-17
常熟紫金知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming of background technology, provide a kind of method of comprehensive treatment petroleum acid residue, alkali

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 900kg of acid slag, 100kg of alkali slag, 50kg of a first-class demulsifier, add 45% sodium hydroxide solution and make the pH value of the remaining slag after the neutralization reaction be 9, and then separate by sedimentation. After the separated acid oil is dried and concentrated by lime powder, it can be refined to produce 150kg of antirust agent. After sedimentation and separation, the separated aqueous phase is decolorized with activated clay, filtered, dried in a drying spray tower, and then concentrated to obtain 500 kg of 90% finished sodium sulfate, which is used to produce Glauber's salt for papermaking. In the separated residue, add 30kg of the second type of demulsifier (multiple compound of polyether, ethanol, stearic acid and fatty acid derivatives, etc.) in the reactor, and add 98% strong sulfuric acid solution under stirring Fully function until the pH value of the residue after the neutralization reaction is 5, and then undergo further sedimentat...

Embodiment 2

[0017] Add 850kg of acid slag, 150kg of alkali slag, 40kg of a first-class demulsifier, and add 45% sodium hydroxide solution to make the pH of the remaining slag after neutralization reaction 8.5, and separate by sedimentation. After the separated acid oil is dried and concentrated by lime powder, it can be refined to produce 140kg of antirust agent. After sedimentation and separation, the separated aqueous phase is decolorized with activated clay, filtered, dried in a drying spray tower, and then concentrated to obtain 450 kg of 85% finished sodium sulfate, which is used to produce Glauber's salt for papermaking. Add 24kg of the second class demulsifier (multiple compound of polyether, ethanol, stearic acid and fatty acid derivatives, etc.) Fully function until the pH value of the residue after the neutralization reaction is 5, and then undergo further sedimentation and separation. The separated organic phase can be used as fuel oil. The separated water phase after sedimen...

Embodiment 3

[0020] Add 800kg of acid slag, 200kg of alkali slag, 35kg of a first-class demulsifier, add 40% sodium hydroxide solution and make the pH value of the remaining slag after neutralization reaction be 8, and separate by sedimentation. After the separated acid oil is dried and concentrated by lime powder, it can be refined to produce 130kg of antirust agent. After sedimentation and separation, the separated aqueous phase is decolorized with activated clay, filtered, dried in a drying spray tower, and then concentrated to obtain 450 kg of 85% finished sodium sulfate, which is used to produce Glauber's salt for papermaking. In the separated residue, add 24kg of the second type of demulsifier (multiple compound of polyether, ethanol, stearic acid and fatty acid derivatives, etc.) in the reactor, and add a strong sulfuric acid solution with a mass content of 95%. Fully function until the pH value of the residue after the neutralization reaction is 5.5, and then undergo further sedime...

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PUM

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Abstract

The invention relates to a method for processing oil acid slag and alkali slag comprehensively; the method comprises the following steps of: adding the petroleum acid slag, the alkali slag and a demulsifying agent into a reaction kettle directly; adding an alkali solution into the reaction kettle and reacting when stirring completely till the PH value of the remaining slag is 7 to 9 after neutralization reaction; carrying out settlement and separation and refining an anti-rusting agent after the separated acid oil is processed by dry lime powder; decolorizing and filtering the separated water phase after settlement and separation by using activated clay; concentrating after the water phase enters a drying tower to be treated with spray drying so as to obtain the solid sodium sulfate of the finished product used for producing mirabilite; adding secondary-class demulsifying agent and acid solution into the remaining slag in the reaction kettle and carrying out stirring; carrying out settlement and separation further and separating out organic phase to be used as fuel oil; recycling the separated water phase after neutralization; adding the separated remaining slag into the alkali solution in hot to carry out neutralization reaction and obtaining paste sulfonated gilsonite.The method leads the acid slag and the alkali slag which are difficult to be processed to be processed comprehensively, achieves the object of using waste to treat the waste and can be widely used for the processing of the acid slag and the alkali in a refinery and a chemical plant.

Description

technical field [0001] The invention belongs to the category of chemical engineering and provides a method for comprehensively treating petroleum acid slag and alkali slag. technical background [0002] At present, millions of tons of acid slag and alkali slag are produced every year in major oil refineries in the world. These acid residues and alkali residues are not only very difficult to store and transport, but also difficult to use. They also pollute the environment and cause serious harm to surrounding farmland and water bodies. Therefore, the research on acid residue and alkali residue treatment is not only necessary but also urgent. At present, in the prior art, acid slag and alkali slag are mainly treated by incineration or pyrolysis. These methods are not only costly, but also only satisfied with treatment, and cannot truly achieve comprehensive utilization. There is no good comprehensive utilization method of acid residue and alkali residue in China, and landfil...

Claims

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Application Information

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IPC IPC(8): C01D5/00C10L1/00C10C3/02C02F1/28C02F11/14
Inventor 莫祥银俞琛捷王克宇
Owner 常熟紫金知识产权服务有限公司
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