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Stratified oil pit harmless treatment method and oil sludge fuel block prepared thereby

A harmless treatment and oil pit technology, applied in chemical instruments and methods, fixed/solidified sludge treatment, fuel, etc., to achieve the effect of improving quality, increasing availability, and excellent environmental protection emission indicators

Active Publication Date: 2019-09-20
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

[0008] The purpose of the present invention is to provide a method for harmless treatment of layered oil pits and the resulting oil sludge fuel blocks to solve the technical problems in the prior art

Method used

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  • Stratified oil pit harmless treatment method and oil sludge fuel block prepared thereby
  • Stratified oil pit harmless treatment method and oil sludge fuel block prepared thereby
  • Stratified oil pit harmless treatment method and oil sludge fuel block prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] ① Collect the oil layer, water layer and mud layer respectively from the oily sludge in the layered oil pit; dewater the collected mud layer to obtain oily waste water and dewatered sludge with a water content of 15%, and then the obtained The oil-containing wastewater is separated from oil and water to obtain mud layer waste oil and mud layer wastewater; the collected water layer and the obtained mud layer wastewater are subjected to sewage treatment.

[0069] ② uniformly mix the oil layer, the dewatered sludge and the mud layer waste oil in the step ① to obtain a primary mixed sludge with an oil content of 40%, then add a sludge modifier to the primary mixed sludge and mix Uniform, obtain pretreatment oil sludge; Wherein, the mass ratio of described primary mix oil sludge and described oil sludge modifier is 100:20; Described oil sludge modifier is made of auxiliary material (straw) 66.5% in mass percent, solidifying agent 16.5%, calcium oxide 6%, bentonite 9% and cem...

Embodiment 2

[0073] Embodiment 2 is basically the same as Embodiment 1, the difference is:

[0074] In step ②, the oil sludge modifier is composed of 50% of auxiliary material (stalk) in mass percentage, 27% of curing agent, 6% of calcium oxide, 12% of bentonite and 5% of cement; In percentage terms, it is composed of 35% methacryloyloxyethyl trimethyl ammonium chloride, 25% dimethyl diallyl ammonium chloride, 25% acrylamide and 15% carboxymethyl cellulose.

Embodiment 3

[0076] Embodiment 3 is basically the same as Embodiment 1, the difference is:

[0077] In step ②, the oil sludge modifier is composed of 66.5% of auxiliary materials (straw) in mass percentage, 16.5% of curing agent, 6% of calcium oxide, 8.5% of bentonite, 2% of cement and 0.5% of oil absorbing agent; The curing agent consists of 40% methacryloxyethyltrimethylammonium chloride, 25% dimethyl diallyl ammonium chloride, 25% acrylamide and 10% carboxymethyl cellulose in mass percent ; 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 stratified oil pit harmless treatment method and an oil sludge fuel block prepared thereby. The method includes: collecting an oil layer, a water layer and a sludge layer from a stratified oil pit; acquiring dehydrated oil sludge and oily wastewater from the sludge layer, and performing oil-water separation on the oily wastewater to obtain sludge layer waste oil and wastewater, and then carrying out sewage treatment on the water layer and sludge layer wastewater; mixing the oil layer, the dehydrated oil sludge and the sludge layer waste oil to obtain preliminary mixed oil sludge, adding an oil sludge modifier and mixing the substances evenly to obtain pretreated oil sludge, wherein the oil sludge modifier includes, by mass percentage, 50-66.5% of an auxiliary material, 13-27.5% of a curing agent, 3-10% of calcium oxide, 3-15% of bentonite and 0.3-5% of cement; molding the pretreated oil sludge, and then placing the product at room temperature, thus obtaining the oil sludge fuel block. The method provided by the invention can realize harmless, clean and recycling treatment of oil sludge in the stratified oil pit, and the content of leached heavy metals and contained dioxin and other substances in the combustion product fly ash of the prepared oil sludge fuel block is extremely low.

Description

technical field [0001] The invention relates to the technical field of oily sludge treatment, in particular to a method for harmless treatment of layered oil pits and an oily sludge fuel block prepared therefrom. Background technique [0002] With the development of the petroleum industry, the output of oily sludge is increasing. Oily sludge, that is, oily sludge sand, refers to a large amount of oily solid waste produced in the process of crude oil and natural gas exploration, exploitation, gathering and transportation, refining, etc. It is generally divided into oily sludge in oil fields and petrochemical industry (mainly oil refineries) of oily sludge. Oilfield oily sludge includes oily sludge on the ground during oilfield development, oil pits for centralized storage of oily waste, oily sludge at the bottom of tanks during production and operation of combined stations, and oily sludge during operation of sewage stations. [0003] Oily sludge refers to the mixture of cr...

Claims

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Application Information

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