Non-layered oil pit harmless treatment method and oil sludge fuel block prepared by same

A harmless treatment, non-layered technology, applied in chemical instruments and methods, fixed/solidified sludge treatment, fuel, etc., to achieve the effect of reducing treatment load, good effect and large surface area

Active Publication Date: 2022-07-29
哈尔滨工大环能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for harmless treatment of non-layered oil pits and the resulting oil sludge fuel blocks to solve the problems in the prior art existing technical problems

Method used

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  • Non-layered oil pit harmless treatment method and oil sludge fuel block prepared by same
  • Non-layered oil pit harmless treatment method and oil sludge fuel block prepared by same
  • Non-layered oil pit harmless treatment method and oil sludge fuel block prepared by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065]① Screening the oily sludge in the non-stratified oil pit to remove solid waste to obtain oily sludge; dewatering the obtained oily sludge to obtain oily wastewater and dewatered oily sludge with a moisture content of 15%, and then The obtained oily waste water is separated from oil and water to obtain waste oil and waste water, and the obtained waste water is subjected to sewage treatment.

[0066] 2. Mix the dewatered sludge in step ① and the waste oil evenly to obtain a preliminary mixed sludge with an oil content of 40%, then add an sludge modifier to the preliminary mixed sludge and mix evenly to obtain a pretreated sludge ; wherein, the mass ratio of the initially mixed sludge and the sludge modifier is 100:20; the sludge modifier is composed of 66.5% of auxiliary materials (straw), 16.5% of curing agent, 66.5% of calcium oxide by mass percentage. %, bentonite 9% and cement 2%; the curing agent is composed of methacryloyloxyethyl trimethyl ammonium chloride 40%, di...

Embodiment 2

[0070] Embodiment 2 is basically the same as Embodiment 1, except that:

[0071] In step ②, the sludge modifier is composed of 50% of auxiliary materials (straw), 27% of curing agent, 6% of calcium oxide, 12% of bentonite and 5% of cement by mass percentage; the curing agent is composed of 5% by mass Percentage of methacryloyloxyethyltrimethylammonium chloride 35%, dimethyldiallylammonium chloride 25%, acrylamide 25% and carboxymethyl cellulose 15%.

Embodiment 3

[0073] Embodiment 3 is basically the same as Embodiment 1, except that:

[0074] In step ②, the sludge modifier is composed of 66.5% of auxiliary materials (straw), 16.5% of curing agent, 6% of calcium oxide, 8.5% of bentonite, 2% of cement and 0.5% of oil absorbing agent by mass percentage; The curing agent is composed of methacryloyloxyethyltrimethylammonium chloride 40%, dimethyldiallylammonium chloride 25%, acrylamide 25% and carboxymethyl cellulose 10% by mass percentage ; The oil absorbing agent is composed of hydrogenated styrene-butadiene-styrene elastomer and high-density polyethylene with a mass ratio of 1:12.

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Abstract

The invention relates to a non-stratified oil pit harmless treatment method and an oil sludge fuel block prepared by the non-stratified oil pit harmless treatment method. The method comprises the following steps: screening homogeneous-phase oily sludge to remove solid wastes to obtain oily sludge; carrying out dehydration treatment on the oily sludge to obtain dehydrated oil sludge and oily wastewater, and carrying out oil-water separation on the oily wastewater to obtain waste oil and wastewater; carrying out sewage treatment on the wastewater; mixing the dehydrated oil sludge with waste oil to obtain primarily mixed oil sludge, adding an oil sludge modifier, and uniformly mixing to obtain pretreated oil sludge; the oil sludge modifier comprises the following components in percentage by mass: 66.5% of an auxiliary material, 15-18% of a curing agent, 5-7% of calcium oxide, 8.5-9.5% of bentonite and 1-2.5% of cement, the pretreated oil sludge is placed at the room temperature after being formed, and the oil sludge fuel block is prepared. Harmless, clean and resourceful treatment of the oil sludge in the non-layered oil pit can be achieved, and the content of heavy metal leached from the combustion product fly ash of the prepared oil sludge fuel block and the content of dioxin and other substances contained in the combustion product fly ash are extremely low.

Description

[0001] The application date is "July 5, 2019", the application number is "201910602549.0", and the name of the invention is "a non-stratified oil pit harmless treatment method and sludge fuel block obtained therefrom". Divisional application of patent application. technical field [0002] The invention relates to the technical field of oily sludge treatment, in particular to a non-layered oil pit harmless treatment method and an oily sludge fuel block prepared therefrom. Background technique [0003] With the development of the petroleum industry, the production of oily sludge is increasing. Oily sludge, namely oily sludge sand, refers to a large amount of oily solid waste generated in the process of crude oil and natural gas exploration, exploitation, gathering and transportation, refining, etc. It is generally divided into oilfield oily sludge and petrochemical industry (mainly oil refineries) of oily sludge. Oilfield oily sludge includes oily sludge on the ground during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/127C10L5/48C10L9/10
CPCC02F11/00C02F11/008C10L5/48C10L9/10C02F11/127Y02E50/30Y02E50/10
Inventor 薛岩
Owner 哈尔滨工大环能科技有限公司
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