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Oil sludge and sludge synergistic treatment device and method

A technology of treatment device and treatment method, applied in sludge treatment, water/sludge/sewage treatment, pyrolysis treatment of sludge, etc., can solve the problems of insufficient decomposition of organic matter, high viscosity of sludge, and high volatile content. , to achieve the effect of harmless treatment, reducing the generation of harmful substances and improving utilization efficiency

Pending Publication Date: 2018-11-20
ZKCH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

CN 105859071 A discloses a method for treating oily sludge. In the method, the oily sludge is fluidized first to obtain a mixed fluid, which is heated and condensed to obtain an oil-water mixture and sludge, and then the sludge is heated at a high temperature to obtain furnace ash. However, the sludge itself has a high viscosity due to its high oil content, so it needs to be fluidized first. Due to its high volatile content, it is easy to cause insufficient decomposition of organic matter and produce harmful substances.

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  • Oil sludge and sludge synergistic treatment device and method

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Effect test

Embodiment 1

[0077] This embodiment provides an oil sludge and sludge co-processing device, the structural diagram of the device is as follows figure 1 Shown, comprise pyrolysis device 3, oil-gas separation device 5 and gas-solid combustion device 7, the oil-gas outlet of described pyrolysis device 3 is connected with the feed inlet of oil-gas separation device 5, the solid outlet of described pyrolysis device 3 The feed port is connected with the feed port of the gas-solid combustion device 7, the gas outlet of the oil-gas separation device 5 is connected with the air inlet of the gas-solid combustion device 7, and the gas outlet of the gas-solid combustion device 7 is connected with the pyrolysis device 3 connected to the heat source inlet.

[0078] Wherein, the pyrolysis device 3 is an external heating type pyrolysis furnace, including an internal material cavity and an external heating cavity, and a scraper machine is arranged in the pyrolysis device 3, and the scraper machine is conne...

Embodiment 2

[0085] This embodiment provides a method for synergistic treatment of oil sludge and sludge. The treatment method is carried out in the device described in Example 1, including the following steps:

[0086] (a) Mix the oil sludge and sludge according to the mass ratio of 1:1, then carry out drying treatment, the drying treatment temperature is 200°C, and then carry out pyrolysis treatment in the pyrolysis device 3, the pyrolysis treatment temperature is 450°C, and the pyrolysis treatment The time is 50 minutes to generate pyrolysis solids and pyrolysis oil gas;

[0087] (b) separating the pyrolysis oil and gas generated in step (a) into pyrolysis oil and pyrolysis gas with the absorption liquid water, and the pyrolysis oil enters the absorption liquid to be condensed and then recycled;

[0088] (c) Combusting the pyrolysis solid generated in step (a) and the pyrolysis gas separated in step (b) in a gas-solid combustion device 7, the combustion temperature is 850°C, generating ...

Embodiment 3

[0091] This embodiment provides a method for synergistic treatment of oil sludge and sludge. The treatment method is carried out in the device described in Example 1, including the following steps:

[0092] (a) Mix oil sludge and sludge according to the mass ratio of 0.25:1, and then carry out drying treatment. The drying treatment temperature is 150°C, and then carry out pyrolysis treatment in the pyrolysis device 3. The pyrolysis treatment temperature is 400°C. The time is 60 minutes to generate pyrolysis solids and pyrolysis oil gas;

[0093] (b) separating the pyrolysis oil and gas generated in step (a) into pyrolysis oil and pyrolysis gas with the washing oil as the absorption liquid, and the pyrolysis oil enters the absorption liquid to be condensed and then recycled;

[0094] (c) Combusting the pyrolysis solid generated in step (a) and the pyrolysis gas separated in step (b) in a gas-solid combustion device 7, the combustion temperature is 800°C, generating solid residu...

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Abstract

The invention provides an oil sludge and sludge synergistic treatment device and method. The treatment device comprises a pyrolysis device, an oil-gas separation device and a gas-solid combustion device, wherein an oil gas discharging port of the pyrolysis device is connected with a feeding port of the oil-gas separation device, a solid discharging port of the pyrolysis device is connected with afeeding port of the gas-solid combustion device, a gas outlet of the oil-gas separation device is connected with a gas inlet of the gas-solid combustion device, and a gas outlet of the gas-solid combustion device is connected with a heat source inlet of the pyrolysis device. An oil sludge and sludge mixture is sequentially subjected to pyrolysis, oil-gas separation and gas-solid combustion, synergistic treatment of oil sludge and sludge is realized, the pyrolysis efficiency is high, and combustion treatment is thorough. Heat produced in the combustion process can be sufficiently used for pyrolysis and drying processes, the energy utilization rate is high, additional energy supplement is not required, and the treatment cost is low.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and relates to a device and method for synergistic treatment of oil sludge and sludge. Background technique [0002] Crude oil will produce a large amount of muddy matter in the process of mining, transportation and refining. The composition of the muddy matter is extremely complex, mainly composed of mineral oil, minerals and water. It is called oily sludge, or oil sludge for short. Oil sludge contains a large amount of toxic substances and is a hazardous waste. Improper disposal will cause serious harm to the environment; oil sludge is a valuable resource in waste due to its high oil content. If it is not recycled, it will cause a large waste of resources. [0003] At present, domestic oily sludge recycling technologies include chemical heat washing method, mechanical separation method, solvent extraction method, incineration method, pyrolysis method and other technologies. The c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/10C02F11/00C02F103/10
CPCC02F11/00C02F11/10C02F2103/10Y02W10/40
Inventor 汪印李智伟
Owner ZKCH
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