Method and device for refinery sludge carbonization treatment and carbon recovery

A technology for sludge charcoal and oil refinery, which is applied in the fields of sludge treatment, coke oven, and petroleum industry through temperature control. The effect of reducing the difficulty of process control and the incidence of device failure rates

Active Publication Date: 2013-12-18
ZHE JIANG ECO ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the inventor of the patent, after the program runs for a period of time, the processing efficiency is low, and even leads to the paralysis of the whole system

Method used

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  • Method and device for refinery sludge carbonization treatment and carbon recovery
  • Method and device for refinery sludge carbonization treatment and carbon recovery
  • Method and device for refinery sludge carbonization treatment and carbon recovery

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Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1 Refinery grease trap bottom sludge treatment, water content 70%, oil content 10%:

[0045] (1) Pre-treatment: oily sludge enters the back-mixing bin 10, and after adding the solid residue generated by carbonization, it is sent to the external heating dryer 1 for heating and drying. The temperature inside the external heating drying machine 1 is 160 ℃, reduce the water content of oily sludge to 10%.

[0046] (2) Carbonization: Dried sludge with a moisture content of 10% enters an externally heated rotary carbonization furnace for pyrolysis, and the carbonization temperature is 600°C for 45 minutes. After the carbonization is finished, the discharged solid residue is cooled and collected in the carbonization residue container 14;

[0047] (3) Condensation and oil-water separation: the gaseous products produced in the pre-treatment and carbonization process are introduced into the spray tower 6 for dust removal, condensation and desulfurization treatment. Af...

Embodiment 2

[0052] Embodiment 2 flotation cell scum, water content 80%, oil content 12%:

[0053] (1) Pre-treatment: oily sludge enters the back-mixing bin 10, and after adding the solid residue generated by carbonization, it is sent to the external heating dryer 1 for heating and drying. The temperature inside the external heating drying machine 1 is 160 ℃, reduce the water content of oily sludge to 15%.

[0054] (2) Carbonization: The dried sludge with a moisture content of 15% enters an externally heated rotary carbonization furnace for carbonization. The carbonization temperature is 650°C and stays for 30 minutes. After the carbonization is finished, the discharged solid residue is cooled and collected in the carbonization residue container 14;

[0055] (3) Condensation and oil-water separation: the gaseous products produced in the pre-treatment and carbonization process are introduced into the spray tower 6 for dust removal, condensation and desulfurization treatment. After being t...

Embodiment 3

[0060] Embodiment 3 remaining active mud, water content 95%, oil content 8%:

[0061] (1) Pre-treatment: Oily sludge enters the back-mixing bin 10, and after adding the solid residue produced by carbonization, it is sent to the external heating dryer 1 for heating and drying. The temperature inside the external heating drying machine 1 is 170 ℃, reduce the water content of oily sludge to 20%.

[0062] (2) Carbonization: The dried sludge with a moisture content of 20% enters an externally heated rotary carbonization furnace for carbonization. The carbonization temperature is 620°C and stays for 40 minutes. After the carbonization is finished, the discharged solid residue is cooled and collected in the carbonization residue container 14;

[0063] (3) Condensation and oil-water separation: the gaseous products produced in the pre-treatment and carbonization process are introduced into the spray tower 6 for dust removal, condensation and desulfurization treatment. After being tr...

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Abstract

The invention relates to a method and device for refinery sludge carbonization treatment and carbon recovery. The method comprises the following steps: pre-treatment: heating oil-containing sludge to 160-180 DEG C in an external heating manner while isolating air, and ensuring that the water content of the oil-containing sludge is controlled at 20% or below; carbonization: carbonizing the oil-containing sludge at 600-650 DEG C for 30-45 minutes, and recovering the solid residue generated by carbonization; condensation and oil-water separation: collecting gas-phase products generated by pre-treatment and carbonization, condensing in a water spray manner to obtain carbonization liquid and non-condensable gas, and performing oil-water separation on the carbonization liquid to obtain carbonization oil; utilization of combustible gas: performing combustion treatment on the non-condensable gas, enabling high temperature generated by combustion to provide heat energy for pre-treatment and carbonization, and performing purification treatment on the tail gas before discharging. The invention also provides a device for realizing the method. According to the invention, the advantages of high oil content recovery rate and stable and reliable process operation are achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to a method and device for carbonization treatment and carbon recovery of oil refinery sludge. Background technique [0002] A large amount of grease trap sludge, dissolved air flotation scum, and residual activated sludge are inevitably produced in the process of oil plant wastewater treatment. They are collectively referred to as the "three muds" of the refinery. The rate is higher. The "three mud" harmless treatment technologies widely studied at home and abroad mainly include incineration, biodegradation, solvent extraction and coking treatment, etc. However, these technologies have many shortcomings in terms of economy, technology and equipment operation and maintenance. Domestic refineries generally use the thickener-mechanical dehydration-incineration method to process refinery sludge. The cost per ton of sludge incineration is high, and the equipment failure rate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/18C10B53/00C01B31/02C01B32/05
Inventor 车磊东圣一北野滋
Owner ZHE JIANG ECO ENVIRONMENTAL TECH CO LTD
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