Oily sludge pyrolysis treatment and residue biohumic acid green repair process

A biological humic acid and humic acid technology, which is applied in pyrolysis treatment of sludge, water/sludge/sewage treatment, petroleum industry, etc., can solve the problems of long reaction time, low heating rate, low liquid yield, etc.

Inactive Publication Date: 2019-02-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low heating rate and long reaction time lead to low liquid yield, difficulty in large-scale processing, high petroleum hydrocarbons and heavy metals in the pyrolysis residue, and the harmless utilization of the residue has become a bottleneck restricting the industrialization and application of this technology.

Method used

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  • Oily sludge pyrolysis treatment and residue biohumic acid green repair process

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Experimental program
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Effect test

Embodiment 1

[0022] The sludge with 15% oil content is crushed by the cone crusher (1), and then added from the top of the front end of the internal mixing rotary reactor (2), and the circulating solid hot ash added to the upper side of the front top plate (3) is rotating Stirring and mixing in the reactor (2), rapid heating, vaporization and pyrolysis; the dusty pyrolysis oil gas flows out from the top oil gas outlet (4) at the end of the rotary reactor (2) and enters the gas-solid separator (5), pyrolysis The slag flows out from the bottom pyrolysis slag outlet (7) at the end of the rotary reactor (2) and enters the bottom of the calcining fluidized bed (9) through the return controller (8); Oil and gas enter the fractionation tower (6) to obtain distillate oil or synthetic crude oil and tower bottom oil, solid ash flows into the bottom of the calcining fluidized bed (9) through the return controller (8), and the tower bottom oil returns to mix with oily sludge; pyrolysis The slag and so...

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Abstract

The invention relates to an oily sludge pyrolysis treatment and residue biohumic acid green repair process which is characterized in that crushed oily sludge and circulating solid hot ash are added from the front end of a rotary reactor and then are stirred, mixed, quickly heated, vaporized and pyrolyzed; pyrolysis oil and gas separated by a gas-solid separator enter a fractionation tower to obtain distillate oil or synthetic crude oil and tower bottom oil; pyrolysis residues enter a calcined fluidized bed through a return controller and subjected to mixed combustion heating with hot fluidizedair; after secondary gas-solid separation at the top of the calcined fluidized bed, the large and medium-sized particle hot ash is returned to the rotary reactor through a circulating pipe, the fineparticle ash flows into a cooling tank to be discharged as residues, and flue gas is discharged after passing through an air pre-heater; after being heated by the air pre-heater, air pressurized by afan flows into the bottom of the calcined fluidized bed as the hot fluidized air; cooled residues are subjected to heavy metal detoxification and pelletization with humic acid substances, so that thesoil self-repair and planting functions are restored.

Description

1. Technical field [0001] The pyrolysis treatment of oily sludge and the green restoration process of residual biological humic acid provided by the invention relate to the purification and treatment of polluted soil, in particular to the restoration of oily sludge. 2. Background technology [0002] Oily sludge refers to soil mixed with heavy oil such as crude oil, various refined oils, and residual oil, forming an extremely difficult oily sludge. Oilfields will produce a certain amount of oily sludge in the process of oil and gas production, mainly from two aspects: one is that crude oil is carried from the formation to the ground and deposited in various containers, large tanks and recovery pools and other ground facilities, which need to be cleaned regularly The second is the sludge generated from oil well operations, perforation of oil collection and transportation pipelines, and oil theft. Oily sludge is harmful to the human body, plants and aquatic organisms. The oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/10B09C1/08
CPCB09C1/08C02F11/10C02F2303/06B09B5/00B09C1/065B09C1/10C05B7/00C05C11/00C05D9/00C05F11/02C05F11/08C05G1/00C10B49/20C10B53/00C10G1/02Y02P20/129C10B53/07
Inventor 田原宇乔英云谢克昌杨朝合周海峰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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