CN104141465A - Device and method for carrying out microwave thermal desorption on oil-containing drilling cuttings - Google Patents
Device and method for carrying out microwave thermal desorption on oil-containing drilling cuttings Download PDFInfo
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- CN104141465A CN104141465A CN201410309267.9A CN201410309267A CN104141465A CN 104141465 A CN104141465 A CN 104141465A CN 201410309267 A CN201410309267 A CN 201410309267A CN 104141465 A CN104141465 A CN 104141465A
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- drilling cuttings
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Abstract
The invention discloses a device for carrying out microwave thermal desorption on oil-containing drilling cuttings. The device comprises a microwave generation and conduction unit, a reaction unit, a nitrogen purging unit and a condensation and separation unit; the microwave generation and conduction unit is used for generating micro waves and conducting the generated micro waves to a reaction unit; (ii) the reaction unit is used for receiving the micro waves from the microwave generation and conduction unit and enabling the micro waves to act on the oil-containing drilling cuttings; (iii) the nitrogen purging unit comprises a nitrogen source, a flow controller and at least two nitrogen pipelines, is used for inputting at least two bunches of nitrogen flow into the reaction unit so as to remove air together with oil gas generated by reaction and is capable of controlling the flow velocity of the nitrogen flow; (iv) the condensation and separation unit is used for cooling the oil gas which is generated by the reaction and condensing the oil gas into liquid phase. The invention also discloses a method for carrying out the microwave thermal desorption on the oil-containing drilling cuttings by using the device.
Description
Technical field
The invention belongs to petrochemical industry, relate to from device and using method thereof containing separation of organic substances crude oil discarded object, the particularly device and method of microwave treatment oily waste.
Background technology
In oil exploitation process, can produce a large amount of oil-contained drilling cuttings, oil-contained drilling cuttings main component is diesel oil, silt and water, process directly discharge if do not add, on the one hand environment can be produced and be had a strong impact on, cause on the other hand the wasting of resources, the innoxious and resource that therefore realizes oil-contained drilling cuttings turns to the main target of this research.
The method of processing at present oil-contained drilling cuttings both at home and abroad mainly contains: burning method, pyrolysismethod, biological treatment, solvent extraction, solidification method, mechanical dehydration method, drilling cuttings ablution, down-hole re-injection method etc.
The method of more than processing oil-contained drilling cuttings all comes with some shortcomings, and can not well realize the innoxious and resource of oil-contained drilling cuttings.In recent years, for overcoming the deficiency of said method, microwave applications is analysed to oil-contained drilling cuttings and the wherein method of oil content that reclaims is tending towards extensive gradually in pyrolysis.Its principle is that microwave action is in oil-contained drilling cuttings, and the oil in silt hole and water are heated rapidly, reaches its boiling point, becomes gas phase and separates with silt, and recycling condenser system makes profit be condensed into liquid phase, and then reaches the object that separates recovery.In addition, the water in hole be there will be superheating phenomenon in microwave action process, higher than 100 DEG C in the situation that, seethes with excitement, and therefore its pressure is also higher than normal pressure.In greasy filth hole, just produced like this high-pressure water vapor, its can play the effect of carrying secretly of better sweeping along to the oil in oil-contained drilling cuttings, is conducive to itself and rapidly and efficiently the separating of silt.
The device of resolving oil-contained drilling cuttings in microwave thermal comprises a nitrogen blowing unit, and its effect is in reactor, to pass into the effect that nitrogen reaches the air of driving away in device reaction pipeline and carries the oil gas of reaction generation secretly.Drive in pipeline the especially air at reactor content filling position away and can prevent that in reaction, high-temperature oil gas contacts with air and burns, there is the nitrogen of certain gas speed can carry the oil gas that reaction generates secretly simultaneously, change molecular balance thereby product is separated as early as possible, improve the de-oiling rate of oil-contained drilling cuttings.The effect of condensation separation unit is the high-temperature oil gas of cooling reaction generation and makes it be condensed into liquid phase.In prior art, nitrogen is entered by a pipeline that is directly connected on reactor bottom.Because being less than in reaction mass filling position and experiment, the diameter at nitrogen inlet position there is unavoidably the phenomenon that material filling is inhomogeneous, therefore nitrogen is also inhomogeneous in the distribution at the each position of reaction mass, there will be that center is many, surrounding is few, or the lax position of material is many, the few phenomenon in position of consolidation.Nitrogen skewness can bring impact to reaction, makes the de-oiling rate difference to some extent of material different parts, and then affects overall de-oiling rate.
Summary of the invention
The invention provides a kind of microwave thermal and resolve the device of oil-contained drilling cuttings, comprising:
I) microwave occurs and conduction unit, conducts to reaction member for generation of microwave and by the microwave of generation;
Ii) reaction member, for receiving the microwave from microwave generation and conduction unit, and makes it act on oil-contained drilling cuttings;
Iii) nitrogen blowing unit, described nitrogen blowing unit comprises source nitrogen, flow control valve and at least 2 nitrogen pipeline, for at least 2 bundles are passed into reaction member to remove air and to be entrained with the oil gas that reaction produces by stream of nitrogen gas, and stream of nitrogen gas flow velocity can be controlled in described nitrogen blowing unit;
Iv) condensation separation unit, the oil gas producing for cooling reaction makes it be condensed into liquid phase.
In a preferred embodiment of the present invention, described microwave occurs and conduction unit comprises microwave generator and waveguide switch, and the microwave that wherein microwave generator produces is delivered to reaction member by waveguide switch.
In a preferred embodiment of the present invention, described reaction member comprises reaction chamber, reactor and manual electromagnetic field tuner; Wherein reaction chamber is preferably selected from one-mode cavity; The material of reactor is preferably selected from quartz;
In a preferred embodiment of the present invention, described nitrogen blowing unit comprises at least 5 nitrogen pipeline, at least 5 bundles, stream of nitrogen gas is passed into reaction member to remove air and to be entrained with the oil gas that reaction produces.
In a preferred embodiment of the present invention, described condensation separation unit comprises receiver and cooling medium.
The invention provides a kind of microwave thermal and resolve the method for oil-contained drilling cuttings, comprising:
A) pack oil-contained drilling cuttings in the bottom of reactor, by the sealing of two parts up and down of reactor, be placed in reaction chamber;
B) connect nitrogen blowing unit and condensation separation unit, two parts up and down of reactor are not connected with nitrogen blowing unit with condensation separation unit, and check tightness;
C) open microwave generator, under microwave, react, meanwhile pass into nitrogen, and in the time of reaction, regulate at any time the speed that passes into of each bundle nitrogen;
D) reaction finishes, and takes out reacted oil-contained drilling cuttings, analyzes oil content and composition wherein, calculates its de-oiling rate.
In a preferred embodiment of the present invention, above-mentioned steps c) in by regulating manual electromagnetic field tuner to control the microwave electromagnetic field distribution of reactor unit part.
In a preferred embodiment of the present invention, above-mentioned steps c) in the speed that the passes into sum of each bundle nitrogen be 1-5L/min.
Beneficial effect of the present invention
Apparatus and method of the present invention enter the quantity of the stream of nitrogen gas bundle of reactor by increase, the flow velocity of the every bundle stream of nitrogen gas of accuracy controlling effectively improves nitrogen phenomenon pockety in material, thereby better bring into play nitrogen, sweeping along of oil gas in whole materials is carried secretly and is acted on and improve overall de-oiling rate.
Brief description of the drawings
Fig. 1 is the setting drawing that microwave thermal of the present invention is resolved oil-contained drilling cuttings.
Reference numeral
1-microwave generator, 2-waveguide switch, 3-control panel, 4-transmitting power instrument, the manual electromagnetic field tuner of 5-one-mode cavity 6-, 7-reactor, 8-receiver, 9-cooling medium, 10-source nitrogen, 11-flow control valve, 12-nitrogen pipeline.
Fig. 2 is the cross-sectional view of reactor inlet of the present invention.
Fig. 3 is the longitudinal section of nitrogen blowing of the present invention unit.
Reference numeral
1'-reactor inlet, 2'-flow control valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail, but scope of the present invention is not limited to following examples.
Embodiment 1
As shown in Figure 1 be setting drawing of the present invention.
Microwave occurs and conduction unit, conducts to reaction member for generation of microwave and by the microwave of generation;
Reaction member, for receiving the microwave from microwave generation and conduction unit, and makes it act on oil-contained drilling cuttings;
Nitrogen blowing unit, for stream of nitrogen gas being passed into reaction member to remove air and to be entrained with the oil gas that reaction produces, and stream of nitrogen gas flow velocity can be controlled in described nitrogen blowing unit;
Condensation separation unit, the oil gas producing for cooling reaction makes it be condensed into liquid phase.
Wherein, microwave generation and conduction unit comprise:
Microwave generator 1;
Waveguide switch 2 is connected on microwave generator 1, on described waveguide switch 2, reflection power instrument 4 is also housed; And the control panel being connected with microwave generator 1 and waveguide switch 2 respectively by circuit.
Reaction member comprises:
One-mode cavity 5, it is connected with waveguide switch 2, and manual electromagnetic field tuner 6 is housed on described one-mode cavity 7;
Reactor 7, it is arranged in one-mode cavity 5, and the position of described reactor 7 is just to waveguide switch 2 and connector one-mode cavity 5, and described reactor 7 is quartz ampoule, is divided into upper and lower two parts.
Nitrogen blowing unit comprises:
Source nitrogen 10;
Five nitrogen pipeline 12, comprise a center culvert and four periphery pipelines, and described five nitrogen pipeline 12 are communicated with reactor 7, in described five nitrogen pipeline 12, flow control valve 11 are all housed, and are connected with source nitrogen 10.
Condensation separation unit comprises:
Receiver 8 is connected with reactor 7 tops, and receiver 8 surroundings are placed with cooling medium 9.
Embodiment 2
Introduce in detail the using method of apparatus of the present invention below:
(1) pack appropriate oil-contained drilling cuttings in the bottom of reactor 7.Described oil-contained drilling cuttings is from Peng's page 2 wells, and wherein oil content is 15.3%, and water content is 4%, and density is 2120kg/m
3.In experiment, the loadings of oil-contained drilling cuttings is 30g.Then by the sealing of two parts up and down of reactor 7, be placed in one-mode cavity 5.
(2) five nitrogen pipeline 12 are communicated with reactor 7 bottoms, then receiver 8 are communicated with reactor 7 tops, check the tightness of each connectivity part.
(3) open microwave generator 1, microwave power used is set to 3kW, meanwhile passes into nitrogen, is 1.5L/min by total nitrogen rate adaptation, and regulates as required the nitrogen of each pipeline to pass into speed.Make microwave act on oil-contained drilling cuttings 30 seconds with this power.Regulate manual tuning device 6, and observe at any time reflection power instrument 4 and control the distribution of microwave electromagnetic field in reactor 7 and one-mode cavity 5 parts.
(4) after reaction finishes, take out reacted oil-contained drilling cuttings, analyze oil content wherein, calculate its de-oiling rate.
Carry out respectively 3 groups of experiment A, B and C, other condition of each group experiment is identical, and difference is the nitrogen flow rate difference of each pipeline in every group of experiment, and experimental result is as shown in table 1.
Table 1 is tested the oil-contained drilling cuttings result of A, B and C
Comparative example
Adopt raw material in the same manner as in Example 2 and identical reaction condition to test D, difference is, the nitrogen pipeline that enters reactor in experiment D only has 1, and experimental result is as shown in table 2.
Table 2 is tested the oil-contained drilling cuttings result of D
The oil-contained drilling cuttings result of four groups of experiments A, B, C and D is as shown in table 3 below, constant and under same microwave condition effect at the overall flow rate of nitrogen, nitrogen tube way be 5 o'clock de-oiling rate than nitrogen tube way be 1 o'clock higher, the de-oiling rate of testing A, B and C is than the height of experiment D.Lower than after experiment D is de-of drilling cuttings oil content after experiment A, B and C are de-, is all less than 0.8%, has reached 1% the discharge standard of being less than of national environmental protection rules and regulations.Meanwhile, constant and under same microwave condition effect at nitrogen overall flow rate, the de-oiling rate of the experiment C that periphery pipeline nitrogen flow rate is the highest is the highest, experiment B secondly, the de-oiling rate minimum of the experiment A of periphery pipeline nitrogen flow rate minimum.This explanation, in suitable scope, increase the nitrogen flow rate of four pipelines of periphery, reduce the flow velocity of center culvert, can make nitrogen more even in the distribution at reaction mass position, thereby better bring into play sweep along the carry effect of nitrogen to oil gas in whole materials, and then improve the de-oiling effect of oil-contained drilling cuttings.Therefore increasing nitrogen tube way and regulating the nitrogen flow rate in each pipeline is effective for the de-oiling rate that improves oil-contained drilling cuttings.
Table 3 is tested the oil-contained drilling cuttings result of A, B, C and D
Claims (9)
1. microwave thermal is resolved a device for oil-contained drilling cuttings, comprising:
I) microwave occurs and conduction unit, conducts to reaction member for generation of microwave and by the microwave of generation;
Ii) reaction member, for receiving the microwave from microwave generation and conduction unit, and makes it act on oil-contained drilling cuttings;
Iii) nitrogen blowing unit, described nitrogen blowing unit comprises source nitrogen, flow control valve and at least 2 nitrogen pipeline, for at least 2 bundle stream of nitrogen gas are passed into reaction member to remove air and to be entrained with the oil gas that reaction produces, and stream of nitrogen gas flow velocity can be controlled in described nitrogen blowing unit;
Iv) condensation separation unit, the oil gas producing for cooling reaction makes it be condensed into liquid phase.
2. according to the device described in claim 1, it is characterized in that, described microwave occurs and conduction unit comprises microwave generator and waveguide switch, and the microwave that wherein microwave generator produces is delivered to reaction member by waveguide switch.
3. according to the device described in claim 1 or 2, it is characterized in that, described reaction member comprises reaction chamber, reactor and manual electromagnetic field tuner.
4. according to the device described in claim 3, it is characterized in that, described reaction chamber is selected from one-mode cavity, and described reactor is selected from quartz ampoule.
5. device according to claim 1, is characterized in that, described nitrogen blowing unit comprises at least 5 nitrogen pipeline.
6. according to the device described in claim 1-5, it is characterized in that, described condensation separation unit comprises receiver and cooling medium.
7. a method for microwave thermal parsing oil-contained drilling cuttings is carried out in use according to the device described in 1-6, comprising:
A) pack oil-contained drilling cuttings in the bottom of reactor, by the sealing of two parts up and down of reactor, be placed in reaction chamber;
B) connect nitrogen blowing unit and condensation separation unit, two parts up and down of reactor are not connected with nitrogen blowing unit with condensation separation unit, and check tightness;
C) open microwave generator, under microwave, react, meanwhile pass into nitrogen, and in the time of reaction, regulate at any time the speed that passes into of each bundle nitrogen;
D) reaction finishes, and takes out reacted oil-contained drilling cuttings, analyzes oil content and composition wherein, calculates its de-oiling rate.
8. according to the method described in claim 7, it is characterized in that, described step c) in by regulating the microwave electromagnetic field distribution of manual electromagnetic field tuner control reaction member.
9. according to the method described in claim 7, it is characterized in that, described step c) in the speed that the passes into sum of each bundle nitrogen be 1-5L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410309267.9A CN104141465A (en) | 2014-03-17 | 2014-06-30 | Device and method for carrying out microwave thermal desorption on oil-containing drilling cuttings |
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| CN201410099391 | 2014-03-17 | ||
| CN201410099391.7 | 2014-03-17 | ||
| CN201410309267.9A CN104141465A (en) | 2014-03-17 | 2014-06-30 | Device and method for carrying out microwave thermal desorption on oil-containing drilling cuttings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105462604A (en) * | 2015-12-22 | 2016-04-06 | 华南理工大学 | Integrated pyrolysis device and pyrolysis method of household garbage and oil shale |
| CN105672918A (en) * | 2016-01-05 | 2016-06-15 | 西南石油大学 | Oil-containing drilling cutting microwave-processing technology |
| CN109761469A (en) * | 2019-03-13 | 2019-05-17 | 长沙如洋环保科技有限公司 | The separation method and sludge impurity of a kind of oily sludge are preparing the application in active carbon |
| CN111468505A (en) * | 2020-04-14 | 2020-07-31 | 山东产研绿洲环境产业技术研究院有限公司 | Microwave thermal analysis device, oil-containing solid waste treatment system and treatment method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109761469A (en) * | 2019-03-13 | 2019-05-17 | 长沙如洋环保科技有限公司 | The separation method and sludge impurity of a kind of oily sludge are preparing the application in active carbon |
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| CN111468505A (en) * | 2020-04-14 | 2020-07-31 | 山东产研绿洲环境产业技术研究院有限公司 | Microwave thermal analysis device, oil-containing solid waste treatment system and treatment method |
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Application publication date: 20141112 |