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Drying treatment technology for oily sludge

A technology for oil sludge and sludge, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. problems, to achieve the effect of reducing processing costs, improving work efficiency and saving energy

Active Publication Date: 2022-03-15
北京华夏安盛科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a drying treatment technology for oily sludge, which solves the problem that the mechanical dehydration effect is poor due to the fact that most of the oily sludge is in the form of a suspended emulsion, and the evaporative treatment method needs to consume a large amount of oil. energy, which is neither environmentally friendly, but also greatly increases the cost of sludge treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An embodiment of the present invention provides a drying treatment technology for oily sludge, including the following specific steps:

[0028] S101. Pump the collected emulsion-like oily sludge into the tube heat exchanger (when the emulsion-like oily sludge is relatively thick, add an appropriate amount of water to dilute and mix it before pumping it into the tube-type heat exchanger) Stirring), using the waste heat generated by the factory's production and processing to preheat the oily sludge;

[0029] S102. Import the preheated oily sludge into the evaporator, and heat the oily sludge in the evaporator by using the high-temperature external flame generated by the combustion of materials in the combustion chamber (the temperature in the evaporator is controlled at 150-180°C) , and filter the water vapor generated by evaporation in the evaporation tank, and the filtered water vapor is directly discharged into the atmosphere;

[0030] S103. Stop heating when the wate...

Embodiment 2

[0036] In this embodiment, on the basis of Embodiment 1, the drying treatment steps are as follows:

[0037] S201. Filter the collected emulsion-like oily sludge with a filter screen to remove larger mud and other impurities in the oily sludge, and then pump the filtered liquid oily sludge into the tube heat exchanger for use in the factory The waste heat generated by production and processing is used to preheat the oily sludge;

[0038] S202. Import the preheated oily sludge into the evaporation tank, use the high-temperature external flame generated by the combustion of materials in the combustion chamber to heat the oily sludge in the evaporation tank, and control the temperature in the evaporation tank at 150-180°C. And filter the water vapor generated by evaporation in the evaporation tank, and the filtered water vapor is directly discharged into the atmosphere;

[0039] S203. Stop heating when the water content of the oily sludge in the evaporation tank is lower than 4%...

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Abstract

The invention provides a drying treatment technology for oily sludge, and relates to the technical field of sludge treatment. The drying treatment technology for the oily sludge comprises the following specific steps: S1, pumping collected emulsion-shaped oily sludge into a tubular heat exchanger, and preheating the oily sludge by utilizing waste heat generated by factory production and processing; s2, introducing the preheated oily sludge into an evaporation tank, heating the oily sludge in the evaporation tank by using high-temperature outer flame generated by material combustion in a combustion chamber, filtering water vapor generated by evaporation in the evaporation tank, and directly discharging the filtered water vapor into the atmosphere; s3, stopping heating when the water content of the oily sludge in the evaporation tank is lower than 6%, and guiding the oily sludge in the evaporation tank into a mechanical stirring device. By adopting a treatment mode of recycling resources, not only can a large amount of oily sludge be efficiently dried, but also a large amount of waste plant straws can be effectively utilized, so that the working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a drying treatment technique for oily sludge. Background technique [0002] Oily sludge is a mixture of various forms of crude oil or refined oil mixed with soil or other media. The oil in it cannot be directly recovered and may cause pollution. It is one of the main pollutants in the petrochemical industry. The sludge produced by the sewage treatment system of petrochemical enterprises mainly comes from the bottom sludge of the grease trap, the scum of the flotation tank, and the remaining activated sludge, which are collectively referred to as "three sludges". Oily sludge also includes oily sludge polluted in iron and steel smelting, oily sludge polluted by heavy oil in ship repair and shipbuilding yards, etc.; oily sludge is generally composed of oil-in-water (o / w), water-in-oil (w / o) and suspended The stable suspension emulsion system composed of solids has poor deh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/121C02F11/13F23G7/00F23G7/10C02F103/36
CPCC02F11/00C02F11/13C02F11/121F23G7/001F23G7/10C02F2303/10C02F2103/365
Inventor 朱丽
Owner 北京华夏安盛科技有限公司
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