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High-efficiency oil sludge pyrolysis oil making method and system

A technology for sludge and pyrolysis, which is used in pyrolysis treatment of sludge, chemical instruments and methods, sludge treatment, etc., can solve the problem of low energy utilization rate of flue gas waste heat pyrolysis products, insufficient drying and pyrolysis of sludge, and product oil. The problem of high water content can achieve the effect of high energy utilization rate, low water content and sufficient pyrolysis

Inactive Publication Date: 2015-01-07
SOUTHEAST UNIV
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Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a new method for high-efficiency oil sludge pyrolysis, especially suitable for oil sludge with high oil content, and aims to solve the problem of using external heat sources in the existing pyrolysis technology High energy consumption, insufficient drying and pyrolysis of oil sludge, high water content in product oil, poor safety and reliability, low utilization rate of waste heat of flue gas and pyrolysis products

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  • High-efficiency oil sludge pyrolysis oil making method and system

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] A method for producing oil by pyrolysis of oil sludge, comprising the following steps:

[0041] Step A: After the crude oil sludge is preliminarily dried by the first-stage paddle dryer, the massive oil sludge at the outlet of the first-stage dryer is crushed by a crusher, and then sent to the second-stage paddle-type dryer for deep drying Obtain dry sludge, which is sent to the spiral pyrolysis furnace for pyrolysis;

[0042] Step B, the water-containing gas produced in the drying process of the first and second-stage paddle dryers is sprayed and cooled to form the first non-condensable gas, and a part of the first non-condensable gas is passed into the first and second-stage blades In the type dryer, it is used as the carrying gas for the water vapor formed by the drying of sludge; the other part of the first non-condensable gas is directly sent to the combus...

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Abstract

The invention discloses a high-efficiency oil sludge pyrolysis oil making method and system and belongs to the technical field of solid waste recycling and environment. Crude oil sludge is subjected to deep drying and breaking treatment by virtue of a two-stage blade-type dryer and then enters a spiral pyrolyzing furnace, and produced pyrolysis gas is subjected to spray cooling to obtain an oil product; noncondensing gas and part of pyrolysis oil which are produced in a drying and pyrolysis process are fed into a burning furnace to be burned, and high temperature smoke produced during burning is used for providing heat for a pyrolysis furnace; smoke at an outlet of a jacket of the pyrolysis furnace passes through a heat conduction oil heat exchanger to recycle waste heat and then is discharged into the air; and the heat conduction oil after being heated provides heat for the blade-type dryer. Therefore, the high-efficiency oil sludge pyrolysis oil making method and system are safe and reliable, drying pyrolysis efficiency is high, the oil product in the sludge can be recycled, gradient utilization of energy is realized, and oil sludge recycling and harmless treatment is realized.

Description

technical field [0001] The invention relates to a high-efficiency oil sludge pyrolysis oil production method and system, belonging to the technical field of solid waste recycling and environment. Background technique [0002] Oily sludge is a hazardous solid waste produced in the process of petroleum exploration, development, transportation and refining. It has the characteristics of difficult dehydration, high viscosity and complex components. The moisture content is usually 60%-90%. In the "Law of the People's Republic of China on the Prevention and Control of Solid Waste Environmental Pollution" revised and passed in 2004, it is required to carry out harmless treatment of petroleum sludge. At present, the hazardous solid waste treatment center charges about 1,000 yuan per ton for untreated oily sludge, which virtually increases the cost of sewage discharge for enterprises. The treatment of oily sludge has become an important environmental problem that oil companies urgen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F11/10C02F11/00C10G1/00B09B3/00
CPCC10G1/02C02F11/00C02F11/10C02F11/12C02F2101/32C02F2201/002C02F2303/10B09B3/80Y02W10/40
Inventor 黄亚继伏启让杨高强邵志伟严玉朋
Owner SOUTHEAST UNIV
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