CN100575285C - The greasy filth comprehensive treating process of landing utilizes method - Google Patents

Abstract

The present invention relates to a kind ofly land the greasy filth comprehensive treating process and utilize method, the overall principle of this method is: land oily sludge classification and handle for of different nature, take different processing modes such as thermochemistry cleaning, dewatered drying processing, burning respectively, the mineral oil and the sewage that reclaim are used, petroleum sludge delivered in the grate firing incinerator burn, burn the flue gas heating waste heat boiler that produces and produce steam, provide thermal source for producing, living, realize landing the minimizing of greasy filth, innoxious, resource utilization.The present invention is according to the source and the different in kind of petroleum sludge; classification is handled; the Technology that is adopted is simple; easy to implement; running cost is low, can effective recycling mineral oil resource, eliminate environmental pollution; resource utilization, the minimizing and innoxious of greasy filth are landed in realization, promote the benign cycle of cleaner production, environment protection and economic benefit.

Description

The greasy filth comprehensive treating process of landing utilizes method

Technical field:

The present invention relates to a kind of oil field that is used for and land the processing method that the oily sludge comprehensive treating process disposes, belong to the environment protection waste and administer technical field.

Background technology:

Oily sludge is as a kind of important pollutent and source of pollution, and is more and more big to the harm of environment, and its innoxious governance problem is extremely urgent.Particularly the oily sludge that brought in the oil recovery production process of viscous crude field is more and more, burden is bigger, comprising the scum silica frost of sewage treatment process, jar end mud etc., these mud that contain viscous crude are mobile poor, the viscosity height, contain a large amount of organic and inorganic chemistry medicaments, to the environment structure severe contamination.At present, both at home and abroad greasy filth is handled the theoretical investigation carried out to a certain degree and useful technology is attempted, set up preliminary technology mode and corresponding processing unit.Usually oily sludge is handled the method that is adopted and mainly be divided into four classes, be that physical method (burns, hot melt glassization, thermosol is centrifugal), physico-chemical process (solvent extraction, stripping, the leaching flushing, solvent-sonic treatment), chemical process (oxygenant oxidation, supercritical oxidation), biological method (bio-oxidation, microorganism breakdown of emulsion), by above-mentioned technological method, utilize dedicated treatment facility that oily sludge is carried out crude separation and Pollution abatement.Above-mentioned treatment process respectively has characteristics, and can obtain certain effect, but exist respectively that facility investment is big, complex process and deficiency such as running cost is higher, the Oil Recovery rate is low, especially viscous crude, super viscous crude are landed greasy filth and still do not have complete feasible method.

At present, attach great importance to biological treatment and the disposal technology and the pyroprocessing Study on Technology of oily sludge both at home and abroad.Aspect the oily sludge disposal, abroad to be responsible for oily sludge is handled by professional environmental protection company usually, its technical process of adopting is: oily sludge-stirring homogenizing-centrifugation of liquefying-heat.The technology of domestic present employing mainly contains three kinds of burning methods, partition method, biological degradation method, burning method is to build special burning facility to cooperate diesel oil that oil sludge and sand is burned, this method one is the facility investment height, the 2nd, the running cost height, the 3rd, cause energy dissipation, though handle more thoroughly, the practical application difficulty is very big; Partition method is to adopt physics or chemical process that oil in the oil sludge and sand and silt particle are separated, this method can be with the recovery of oil utilization in the oil sludge and sand, but cost is higher, and isolated silt particle still can contain certain petroleum substance, directly enter in the environment and also can cause environmental pollution, so the silt particle that this method is separated still needs to adopt burning method, deposits method or the method for burying is handled; Biological degradation method is meant and utilizes microorganism that contained oily substance in the oil sludge and sand is decomposed, and cost is higher, and technology is very unripe, and contained oily substance can not effectively utilize.

Summary of the invention:

The object of the invention is to provide that a kind of Technology is simple, working cost is low, Oil Recovery rate height, and the greasy filth comprehensive treating process of landing that can reduce and reduce environmental pollution significantly utilizes method.

Technical scheme of the present invention is as follows:

This kind lands the greasy filth comprehensive treating process and utilizes the overall principle of method to be: land the oily sludge classification and handle for of different nature; take different processing modes respectively; the mineral oil and the sewage that reclaim are used; petroleum sludge delivered in the grate firing incinerator burn; utilize and burn the flue gas heating waste heat boiler production steam that produces; provide thermal source for producing, living; the minimizing of greasy filth, innoxious, resource utilization are landed in realization, promote the benign cycle of cleaner production, environment protection and economic benefit.

Specific implementation method of the present invention is as follows:

1, preliminary letter sorting, carry out pre-treatment:

To landing the earlier preliminary letter sorting of greasy filth, isolate the bulk inanimate matter, not the direct landfill of oil-containing inanimate matter or do material of construction, oleaginous materials is sent into and is landed the greasy filth treatment unit, adopt the hot sewage of sewage work, add an amount of clean-out system, carry out the thermochemistry clean; Direct landfill of the cleaned not oil-containing of thermochemistry inanimate matter or pad road well site, sump oil reclaims, oil-cut mud through centrifugal separation equipment dehydration back and bulk organic matter through airing, dry moisture reduce to send in the incinerator below 20% burn; Sump oil and sewage are transported to oil extraction-generated waste water treatment plant respectively and handle, and mineral oil is processed into oil fuel, the sewage qualified discharge;

2, dewatered drying is handled:

1. natural drying

Utilize sunlight will mix high moisture oily water treatment scum silica frost, bed mud and white residue etc. after modified by airing with moisture from being reduced to 50% more than 70%;

2. oven dry is handled

The tail gas that utilizes incinerator adopts hot blast chip select drying machine to implement secondary drying to half-dried material, is reduced to below 20% from 50% all kinds of oily sludges are moisture;

3, burning and heat energy utilization are handled

Various petroleum sludges after the mummification are delivered in the grate firing incinerator for thermal decomposition and are burned, incineration temperature is up to 1100 ℃, organic pollutant is thoroughly destroyed by fire, flue gas produces high temperature and high pressure steam through residual heat boiler for exchanging heat and thermal source is provided for production, life, after tail gas provides thermal source to drying plant, after deacidification, udst separation, discharge again;

4, clear jar greasy filth is handled:

Clear jar greasy filth reclaims mineral oil by the method that adopts solvent oil, hot sewage second-level extraction centrifugation, and remaining silt particle burns after the airing oven dry, and sewage is delivered to sewage work and handled the back qualified discharge, and mineral oil is processed into the oil fuel export trade.

The present invention is according to the source and the different in kind of petroleum sludge, and classification is handled, and the Technology that is adopted is simple, easy to implement, running cost is low, can effective recycling mineral oil resource, eliminate environmental pollution, realize landing resource utilization, the minimizing and innoxious of greasy filth.

Description of drawings:

Accompanying drawing is a comprehensive treating process overall craft schema of the present invention.

Embodiment:

The present invention is provided by following examples, is illustrated below in conjunction with accompanying drawing.

As shown in the figure, the present invention is according to the source and the character of flooring petroleum body refuse, handle, dispose and utilize landing greasy filth, clear jar of greasy filth and scum silica frost bed mud by the diagram flow process respectively after the classification, can reach and land the purpose of greasy filth minimizing, innoxious, resource utilization.

Claims (1)

1, a kind ofly lands the greasy filth comprehensive treating process and utilize method, it is characterized in that: the overall principle of this method is: land oily sludge classification and handle for of different nature, take different processing modes respectively, the mineral oil and the sewage that reclaim are used, petroleum sludge delivered in the grate firing incinerator burn, utilize and burn the flue gas heating waste heat boiler production steam that produces,, realize landing the minimizing of greasy filth, innoxious, resource utilization for production, life provide thermal source; Its specific implementation method is as follows:

(1), preliminary letter sorting, carry out pre-treatment:

To landing the earlier preliminary letter sorting of greasy filth, isolate the bulk inanimate matter, not the direct landfill of oil-containing inanimate matter or do material of construction, oleaginous materials is sent into and is landed the greasy filth treatment unit, adopt the hot sewage of sewage work, add an amount of clean-out system, carry out the thermochemistry clean; Direct landfill of the cleaned not oil-containing of thermochemistry inanimate matter or pad road well site, sump oil reclaims, oil-cut mud through centrifugal separation equipment dehydration back and bulk organic matter through airing, dry moisture reduce to send in the incinerator below 20% burn; Sump oil and sewage are transported to oil extraction-generated waste water treatment plant respectively and handle, and mineral oil is processed into oil fuel, the sewage qualified discharge;

(2), dewatered drying is handled:

1. natural drying

Utilize sunlight will mix high moisture oily water treatment scum silica frost, bed mud and white residue etc. after modified by airing with moisture from being reduced to 50% more than 70%;

2. oven dry is handled

The tail gas that utilizes incinerator adopts hot blast chip select drying machine to implement secondary drying to half-dried material, is reduced to below 20% from 50% all kinds of oily sludges are moisture;

(3), burning and heat energy utilization are handled

Various petroleum sludges after the mummification are delivered in the grate firing incinerator for thermal decomposition and are burned, incineration temperature is up to 1100 ℃, organic pollutant is thoroughly destroyed by fire, flue gas produces high temperature and high pressure steam through residual heat boiler for exchanging heat and thermal source is provided for production, life, after tail gas provides thermal source to drying plant, after deacidification, udst separation, discharge again;

(4), clear jar greasy filth is handled:

Clear jar greasy filth reclaims mineral oil by the method that adopts solvent oil, hot sewage second-level extraction centrifugation, and remaining silt particle burns after the airing oven dry, and sewage is delivered to sewage work and handled the back qualified discharge, and mineral oil is processed into the oil fuel export trade.

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