CN103936253A - Device of deeply treating oil sludge by microwave and plasma technique - Google Patents

Device of deeply treating oil sludge by microwave and plasma technique Download PDF

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Publication number
CN103936253A
CN103936253A CN201410163527.6A CN201410163527A CN103936253A CN 103936253 A CN103936253 A CN 103936253A CN 201410163527 A CN201410163527 A CN 201410163527A CN 103936253 A CN103936253 A CN 103936253A
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microwave
plasma
feed
greasy filth
gasification
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CN201410163527.6A
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CN103936253B (en
Inventor
黄群星
严建华
池涌
潘志娟
王君
李晓东
蒋旭光
马增益
王飞
金余其
陆胜勇
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a device of deeply treating oil sludge by a microwave and plasma technique. The device disclosed by the invention is a two-section compound structure: a microwave section and a plasma gasifying section. The upper end of the microwave section is connected with the feeding section, the lower end of the plasma gasifying section is connected with an ash collecting section, the lower end of the microwave section is connected with the upper end of the plasma gasifying section, the gas outlet is arranged below the plasma gasifying section and above the ash collecting section, and a gas product is extracted by a suction pump. A microwave generator is arranged on the inner side wall of the microwave section for heating, evaporating and cracking moisture and light components in the oil sludge. Plasma guns are symmetrically arranged on the inner side wall of the plasma gasifying section for gasifying slags and heavy components which are incomplete in reaction by the microwave section to obtain more combustible clean gases. The device disclosed by the invention can improve the problems of waste of petroleum resources and secondary pollution and the like caused by conventional oil sludge treatment methods. The energy loss is reduced while oil sludge is deeply treated.

Description

A kind of device that utilizes microwave and plasma technique in-depth to process greasy filth
Technical field
The invention belongs to technical field of environmental science and petrochemical industry; Relate to a kind ofly to disposal of oily sludge, relate in particular to a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth, can effectively realize that greasy filth is innoxious, recycling treatment.
Background technology
Greasy filth is to produce in Oil extraction, in collecting defeated, refining and sewage from oil refinery treating processes, wherein except containing a large amount of residual oils, also contain the toxic substance of the stenches such as benzene homologues, phenols, anthracene, pyrene, a large amount of pathogenic bacteria, heavy metal, the hazardous and noxious substances such as salt and polychlorobiphenyl, Dioxins.Therefore, greasy filth is listed in the non-mineral oils in " national Hazardous Waste List ".In addition, greasy filth also has the features such as viscosity is high, poor fluidity, the difficult separation of oil soil.Directly burn is the main method that current greasy filth is disposed, but due to the existence of the heavy components such as pitch, cause containing a large amount of unburnt poisonous components in direct incineration flue gas, very easily cause the secondary pollution of air and soil, worsen ecotope, and cause the waste of bulk petroleum resource.
Microwave-heating is the more a kind of novel pyrolytic technology of Recent study, and due to the penetrativity of microwave, the entirety heating that realizes pyrolysis object obtains the product of higher quality, but because heavy component in greasy filth is more, in end slag, fixed carbon content is high, and carbon turnover ratio is low.Thermal plasma gasification technology is a kind of new technology of processing organic danger wastes equally, allows the organic matter gasification that heats up at short notice, and become inert material after non-combustible component melts by the high temperature of plasma flame.
In sum, be necessary to develop one and can effectively process greasy filth, make full use of petroleum resources wherein, and reduce the method for the secondary pollution in treating processes.
Summary of the invention
The object of the invention is the advantage in conjunction with above two kinds of methods, a kind of device that utilizes the in-depth of microwave and plasma technique to process greasy filth has been proposed, be intended to solve greasy filth in treating processes, have bulk petroleum resource to be wasted and unburnt heavy component and residue in heavy metal cause the problem of secondary pollution.
The present invention adopts two sections of composite structures, be respectively microwave section and plasma gasification section, and microwave section upper end is connected with feed zone, plasma gasification section lower end is connected with lime-ash collection section, the lower end of microwave section is connected with the upper end of plasma gasification section, air outlet is arranged on plasma gasification section below, and top, lime-ash collection section, utilizes off-gas pump that gaseous product is extracted out.
The sidewall of feed zone is provided with opening for feed and inlet mouth, the external feed system of opening for feed; Inlet mouth leads to inert protective gas;
Described feed system, comprises feeding pump and hopper, and hopper is connected with the sidewall opening for feed of feed zone.Because greasy filth has very high viscosity, use feeding pump it evenly can be conveyed into hopper continuously.
Microwave section inner side-wall is provided with microwave generator, for the moisture of greasy filth and light component are subject to thermal evaporation, cracking; The microwave frequency of microwave generator used is 2450 MHz; And oblique sidewall and the vertical direction of microwave section are 45 °, this oblique sidewall and feed zone opening for feed the same face;
Described microwave generator is positioned on the inner side-wall relative with oblique sidewall
On the inner side-wall of plasma gasification section, be symmetrically arranged with two plasma guns, for slag and the heavy component gasification completely of microwave section unreacted is obtained to more flammable clean gas; The temperature of described plasma gasification section is adjustable within the scope of 1500 DEG C~2500 DEG C, and optimal temperature is 1500 DEG C; The spacing of two plasma guns that is positioned at plasma gasification section is adjustable, by regulating its spacing to control temperature.
Lime-ash collection section is used for collecting gasification slag, and an one oblique sidewall and vertical direction are 85 °, this oblique sidewall and feed zone opening for feed the same face; Air outlet is provided with pump, and the gaseous product of microwave-heating and plasma gasification is discharged.
Working process of the present invention is as follows:
First, greasy filth treating processes is carried out under inert atmosphere conditions, and rare gas element is filled with from the inlet mouth of feed zone sidewall, before device operation first with rare gas element by emptying air in device.
Secondly, greasy filth, by feed system access to plant, first passes through microwave section, and the moisture in greasy filth and light component are subject to thermal evaporation, cracking, and slag and mink cell focus component are fallen, plasma gasification section is interior to be vaporized under hot conditions.Because sidewall and the horizontal plane angle of microwave section are 45 °, can make greasy filth lengthen in the microwave section residence time, be heated evenly and preliminary pyrolytic reaction reacts completely as far as possible.
The temperature of last plasma gasification section is controlled at 1500 DEG C, and gaseous product is extracted out with pump by air outlet, and slag enters lime-ash collection section.
Beneficial effect of the present invention is as follows:
Greasy filth enters hopper through feeding pump, material is sent into burner hearth and fall in microwave section, and the furnace wall of microwave section and level are the oblique angle of 45 °, thereby greasy filth was increased in the residence time of microwave section, increases its being heated the reaction times in microwave section.Because microwave energy utilising efficiency is high, and can be that material is heated evenly, can make moisture and light component in greasy filth be subject to thermal evaporation, cracking, and can reduce the loss of energy.The slag of failing to react away in microwave section and mink cell focus component are fallen in hypomere plasma device, under hot conditions, are vaporized.The product that two-stage reaction obtains is extracted out with off-gas pump from pneumatic outlet, enters three-phase separating system, obtains noncondensable gas and lightweight oil and sewage, and wherein inflammable gas and oil are recovered utilization, and sewage flows into Sewage treatment systems.The present invention can effectively improve petroleum resources waste and the secondary pollution problems that traditional greasy filth treatment process causes.And when processing, greasy filth in-depth reduces the loss of energy.
Brief description of the drawings
Fig. 1 is greasy filth in-depth treatment unit figure of the present invention;
Fig. 2 is greasy filth processing flow chart of the present invention.
In figure, feed system 1, inlet mouth 2, microwave generator 3, plasma gun 4, air outlet 5.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth, the present invention adopts two sections of composite structures, be respectively microwave section (II) and plasma gasification section (III), and microwave section upper end is connected with feed zone (I), plasma gasification section lower end is connected with lime-ash collection section (IV), the lower end of microwave section is connected with the upper end of plasma gasification section, air outlet (5) is arranged on plasma gasification section below, top, lime-ash collection section, utilizes off-gas pump that gaseous product is extracted out.The sidewall of feed zone is provided with opening for feed and inlet mouth (2), the external feed system of opening for feed (1); Inlet mouth leads to rare gas element;
Described feed system, comprises feeding pump and hopper, and this is because greasy filth has very high viscosity, uses feeding pump it evenly can be conveyed into hopper continuously.Hopper is connected with the sidewall opening for feed of feed zone.
Microwave section (II) inner side-wall is provided with microwave generator (3), for the moisture of greasy filth and light component are subject to thermal evaporation, cracking; The microwave frequency of microwave generator used is 2450 MHz, and microwave power is 800 w~1500 w; And oblique sidewall and the vertical direction of microwave section are 45 °, this oblique sidewall and feed zone opening for feed the same face;
1 of described microwave generator, is positioned on the wall relative with oblique sidewall.
On the inner side-wall of plasma gasification section (III), be symmetrically arranged with two plasma guns (4), for slag and the heavy component gasification completely of microwave section unreacted is obtained to more flammable clean gas; The temperature of described plasma gasification section can be adjustable within the scope of 1500 DEG C~2500 DEG C, and optimal temperature is 1500 DEG C; The spacing of two plasma guns that is positioned at plasma gasification section is adjustable, by regulating its spacing to control temperature.
Lime-ash collection section (IV) is for collecting gasification slag, and an one oblique sidewall and vertical direction are 85 °, this oblique sidewall and feed zone opening for feed the same face; Air outlet (5) is provided with pump, and the gaseous product of microwave-heating and plasma gasification is discharged.
Working process of the present invention is as follows:
In conjunction with Fig. 1 and Fig. 2, first, greasy filth treating processes is carried out filling under nitrogen condition, and rare gas element is filled with from the inlet mouth of feed zone sidewall, before device operation first with rare gas element by emptying air in device, ensure the inert atmosphere in treating processes.
Secondly, greasy filth is by feed system access to plant, first pass through microwave section (microwave-heating reactor), the moisture in greasy filth and light component are subject to thermal evaporation, cracking, and slag and mink cell focus component are fallen, plasma gasification section (plasma reactor) is interior to be vaporized under hot conditions.Because sidewall and the horizontal plane angle of microwave section are 45 °, can make greasy filth lengthen in the microwave section residence time, be heated evenly and preliminary pyrolytic reaction reacts completely as far as possible.
The temperature of last plasma gasification section is controlled at 1500 DEG C, and gaseous product is extracted out with pump by air outlet, through triphase separator, product separation is become to noncondensable gas, can coagulate oil ingredient and sewage.Wherein gas and recovery of oil utilization, sewage enters Sewage treatment systems.Slag enters lime-ash collection section.

Claims (6)

1. a device that utilizes microwave and plasma technique in-depth to process greasy filth, it is characterized in that: adopt two sections of composite structures, be respectively microwave section (II) and plasma gasification section (III), and microwave section upper end is connected with feed zone (I), plasma gasification section lower end is connected with lime-ash collection section (IV), the lower end of microwave section is connected with the upper end of plasma gasification section, air outlet (5) is arranged on plasma gasification section below, top, lime-ash collection section, utilizes off-gas pump that gaseous product is extracted out;
Microwave section (II) inner side-wall is provided with microwave generator (3), for the moisture of greasy filth and light component are subject to thermal evaporation, cracking; On the inner side-wall of plasma gasification section (III), be symmetrically arranged with plasma gun (4), for slag and the heavy component gasification completely of microwave section unreacted is obtained to more flammable clean gas.
2. a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth as claimed in claim 1, is characterized in that the sidewall of feed zone (I) is provided with opening for feed and inlet mouth (2), the external feed system of opening for feed (1); Inlet mouth leads to rare gas element.
3. a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth as claimed in claim 1, the microwave frequency that it is characterized in that microwave generator used is 2450 MHz; And oblique sidewall and the vertical direction of microwave section are 45 °, this oblique sidewall and feed zone opening for feed the same face; Described microwave generator (3) is positioned on the inner side-wall relative with oblique sidewall.
4. a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth as claimed in claim 1, is characterized in that the temperature of described plasma gasification section is adjustable within the scope of 1500 DEG C~2500 DEG C, and optimal temperature is 1500 DEG C; The spacing of two plasma guns that is positioned at plasma gasification section is adjustable, by regulating its spacing to control temperature.
5. a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth as claimed in claim 1, it is characterized in that described feed system, comprise feeding pump and hopper, hopper is connected with the sidewall opening for feed of feed zone, uses feeding pump it evenly can be conveyed into hopper continuously.
6. a kind of device that utilizes microwave and plasma technique in-depth to process greasy filth as claimed in claim 1, it is characterized in that lime-ash collection section (IV) is for collecting gasification slag, an one oblique sidewall and vertical direction are 85 °, this oblique sidewall and feed zone opening for feed the same face; Air outlet (5) is provided with pump, and the gaseous product of microwave-heating and plasma gasification is discharged.
CN201410163527.6A 2014-04-22 2014-04-22 A kind of device utilizing microwave and plasma technique in-depth process greasy filth Active CN103936253B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496145A (en) * 2014-12-12 2015-04-08 中山大学 Device for producing synthetic gas by pyrolysis of oil sludge from plasma
CN105859089A (en) * 2016-06-15 2016-08-17 胡恩林 Small microwave fecal treatment device and fecal treatment method
CN108328898A (en) * 2017-01-18 2018-07-27 中国石油化工股份有限公司 A kind of recycling processing method and device of oily sludge
CN108947157A (en) * 2018-09-28 2018-12-07 启源新能源科技(张家口)有限公司 A kind of processing method of oily sludge
CN109704526A (en) * 2019-01-24 2019-05-03 中石化宁波工程有限公司 A kind of plasma process system of petrochemical sludge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110006306A (en) * 2009-07-14 2011-01-20 주식회사 엠투 Sludge drying system
US20120024718A1 (en) * 2001-07-16 2012-02-02 Foret Plasma Labs, Llc Method for treating a substance with wave energy from plasma and an electrical arc
CN202881204U (en) * 2012-11-19 2013-04-17 北京环宇冠川等离子技术有限公司 Sludge gasifying furnace with plasma torch heating system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120024718A1 (en) * 2001-07-16 2012-02-02 Foret Plasma Labs, Llc Method for treating a substance with wave energy from plasma and an electrical arc
KR20110006306A (en) * 2009-07-14 2011-01-20 주식회사 엠투 Sludge drying system
CN202881204U (en) * 2012-11-19 2013-04-17 北京环宇冠川等离子技术有限公司 Sludge gasifying furnace with plasma torch heating system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496145A (en) * 2014-12-12 2015-04-08 中山大学 Device for producing synthetic gas by pyrolysis of oil sludge from plasma
CN105859089A (en) * 2016-06-15 2016-08-17 胡恩林 Small microwave fecal treatment device and fecal treatment method
CN105859089B (en) * 2016-06-15 2018-07-17 胡恩林 A kind of small microwave fecal treatment equipment and dejecta treatment method
CN108328898A (en) * 2017-01-18 2018-07-27 中国石油化工股份有限公司 A kind of recycling processing method and device of oily sludge
CN108328898B (en) * 2017-01-18 2021-04-06 中国石油化工股份有限公司 Resourceful treatment method and device for oily sludge
CN108947157A (en) * 2018-09-28 2018-12-07 启源新能源科技(张家口)有限公司 A kind of processing method of oily sludge
CN109704526A (en) * 2019-01-24 2019-05-03 中石化宁波工程有限公司 A kind of plasma process system of petrochemical sludge

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