CN105758883A - Method and device for detecting oil content in washing process of oily sludge - Google Patents
Method and device for detecting oil content in washing process of oily sludge Download PDFInfo
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Abstract
The invention discloses a method and device for detecting the oil content in the washing process of oily sludge.The method includes the steps that an oily sludge sample is placed into a washing instrument; a unilateral nuclear magnetic resonance instrument is adopted outside the washing instrument, and a driving equalizing pulse sequence serves as a rapid one-dimension nuclear magnetic resonance measurement pulse sequence and is used for performing nuclear magnetic resonance on-line measurement on the oily sludge sample, so that echo string data of the oily sludge sample is obtained; according to the echo string data of the oily sludge sample, the oil content in the washing process of the oil sludge sample is determined.The oil content of the oil sludge can be rapidly determined, so that the oil content in the washing process of the oily sludge sample is detected on line, and non-destructive detection is also achieved.
Description
Technical field
The present invention relates to technical field of petroleum industry, particularly relate to oil content detection method and device in oily sludge water-washing process.
Background technology
Oily sludge is a big main association garbage of petroleum industry, itself has the feature of inflammable, high pollution, difficult treatment, is put into the hazardous waste in " National Hazard refuse register " at present.Oily sludge derives from the overall process of Petroleum Production, transport, storage and refinement, mainly comprises three kinds of components of solid particle of crude oil, water and different proportion.In line with the principle of utilization of waste as resource, carry out harmless treatment and the recycling correlational study of oily sludge, the sustainable development of petroleum and petrochemical industry is significant.Currently, crude oil recovery technology causes the concern of common people gradually, has developed a series of contained Mud Treatment Technology in the document delivered in recent years and actual production, and these methods are broadly divided into two classes: a class is recycling, and another kind of is harmless treatment.In order to analyze the treatment effect of different disposal method, Optimum Operation parameter and evaluate the recovery value of oily sludge, it is necessary to set up the quick and precisely analysis method for oily sludge sample oil content.Analyze oil content exactly, for the selection of process for treating oil-containing sludge, there is important reference significance, for instance, for the oily sludge of low oil content, it is contemplated that processing cost, the method such as burning is proper；Oily sludge for high oil content, it is possible to by reclaiming crude oil, it is achieved the recycling of oily sludge.
Oily sludge washing is that a kind of conventional oily sludge oil content measures the chemical method with oily sludge three components separation, its essence is employing NaOH or Na2SiO3Aqueous solution soaking oily sludge, thus improving the response rate of crude oil and reducing the separation condition of crude oil and solid particle, the crude oil in oily sludge extracts the most at last.At present before Sludge in Oilfields batch washing is processed, need sampling through the washing experiment of row laboratory, measure oily sludge oil content, experimentation is generally at a hours, by the time experiment end just can know that the oil content of oily sludge after extracting oily sludge, consuming time longer, it is impossible to the change of oil content in the whole water-washing process of online understanding.Further, experimentation will result in the loss of oily sludge, it is impossible to reaches the purpose of lossless detection.
Summary of the invention
The embodiment of the present invention provides oil content detection method in a kind of oily sludge water-washing process, and in order to realize the lossless audio coding of oil content in oily sludge water-washing process, the method includes:
Oily sludge sample is placed in washing instrument；
Outside washing instrument, adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample；
Echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, described washing instrument outside adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, including:
Washing instrument is placed on the probe of monolateral nuclear magnetic resonance apparatus, and the sensitizing range of described probe is directed at oily sludge sample position.
In one embodiment, described washing instrument outside adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, including:
Trigger the polarization window driving balanced pulse sequences and echo acquirement window acts on simultaneously and makes echo amplitude occur once to vibrate, gather an echo data, circulate this process and gather one group of echo data.
In one embodiment, the cycle-index of described driving balanced pulse sequences is determined according to the sample frequency of the echo data preset.
In one embodiment, the described echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process, including:
The longitudinal relaxation time in oily sludge sample water-washing process and T2 is determined according to described echo data；
According to described longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, the described echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process, including:
Partial least square method is adopted to set up the dependency mathematical model of described echo data and described oil content；
According to described dependency mathematical model, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, described employing partial least square method sets up the dependency mathematical model of described echo data and described oil content, including following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；
Prediction process: set up the Y regression model to X as follows:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation；T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval, it is determined that the matching relationship between X and Y.
The embodiment of the present invention also provides for oil content detecting device in a kind of oily sludge water-washing process, and in order to realize the lossless audio coding of oil content in oily sludge water-washing process, this device includes:
Echometric measurement module, for triggering monolateral nuclear magnetic resonance apparatus outside washing instrument, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, the oily sludge sample placed is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample in washing instrument；
Oil content determines module, for the echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, described echometric measurement module is placed on the probe of monolateral nuclear magnetic resonance apparatus specifically for controlling washing instrument, and the sensitizing range of described probe is directed at oily sludge sample position.
In one embodiment, described echometric measurement module acts on simultaneously make echo amplitude occur once to vibrate specifically for triggering the polarization window driving balanced pulse sequences and echo acquirement window, gathers an echo data, circulates this process and gather one group of echo data.
In one embodiment, described echometric measurement module specifically for determining the cycle-index of described driving balanced pulse sequences according to the sample frequency of the echo data preset.
In one embodiment, described oil content determine module specifically for:
The longitudinal relaxation time in oily sludge sample water-washing process and T2 is determined according to described echo data；
According to described longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, described oil content determine module specifically for:
Partial least square method is adopted to set up the dependency mathematical model of described echo data and described oil content；
According to described dependency mathematical model, it is determined that the oil content in oily sludge sample water-washing process.
In one embodiment, described oil content determines that module is specifically for when the dependency mathematical model adopting partial least square method to set up described echo data and described oil content, performing following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；
Prediction process: set up the Y regression model to X as follows:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation；T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval, it is determined that the matching relationship between X and Y.
In the embodiment of the present invention, adopt monolateral nuclear magnetic resonance apparatus that as one-dimensional nuclear magnetic resonance, driving balanced pulse sequences is measured pulse train, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, echo data according to oily sludge sample, determine the oil content in oily sludge sample water-washing process, it is possible to be quickly completed the mensuration of oily sludge oil content, thus the oil content realized in on-line checking oily sludge sample water-washing process；Further, monolateral nuclear magnetic resonance apparatus is that the oily sludge sample being opposite in washing instrument outside washing instrument carries out Nuclear Magnetic Resonance Measurement, it is possible to reach the purpose of lossless detection.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the process chart of oil content detection method in oily sludge water-washing process in the embodiment of the present invention；
Fig. 2 is the schematic diagram driving balanced pulse sequences in the embodiment of the present invention；
Fig. 3 measures modeled example figure based on the oily sludge of one-dimensional nuclear magnetic resonance containing gauging rate in the embodiment of the present invention；
Fig. 4 is the schematic diagram of oil content detecting device in oily sludge water-washing process in the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, the schematic description and description of the present invention is used for explaining the present invention, but not as a limitation of the invention.
In order to realize the lossless audio coding of oil content in oily sludge water-washing process, the embodiment of the present invention provides oil content detection method in a kind of oily sludge water-washing process, as it is shown in figure 1, the method may include that
Step 101, oily sludge sample is placed in washing instrument in；
Step 102, washing instrument outside adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample；
Step 103, echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
Concrete, in embodiments of the present invention, it is oily sludge sample is placed in washing instrument, adopts monolateral nuclear magnetic resonance apparatus that oily sludge sample is carried out Nuclear Magnetic Resonance Measurement outside washing instrument, so can reach the purpose of lossless detection.When being embodied as, in order to obtain more accurate measurement as a result, it is possible to washing instrument is placed on the probe of monolateral nuclear magnetic resonance apparatus, and by the alignment oily sludge sample position, sensitizing range of probe.Monolateral nmr probe adopts external magnetic field metering system, and investigation depth is adjustable.
The embodiment of the present invention adopts monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample.Wherein driving balanced pulse sequences is that a kind of quickly one-dimensional nuclear magnetic resonance measures pulse train, this sequence has only to the time of several seconds and just can complete a Nuclear Magnetic Resonance Measurement, the mensuration of oily sludge oil content can be quickly completed based on Nuclear Magnetic Resonance Measurement result, thus the oil content realized in on-line checking oily sludge sample water-washing process.Drive balanced pulse sequences can make the echo amplitude up-down vibration repeatedly of oily sludge sample, adopt and drive balanced pulse sequences to complete signals collecting to have only to the time of about 10 milliseconds.On-line checking is after the oil content in oily sludge sample water-washing process, it is also possible to draw out the change curve elapsing oily sludge oil content with washing time.
In embodiment, when oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, the polarization window driving balanced pulse sequences can be triggered and echo acquirement window acts on simultaneously and makes echo amplitude occur once to vibrate, gather an echo data, circulate this process and gather one group of echo data.Fig. 2 is the schematic diagram driving balance (DE) pulse train in the embodiment of the present invention.As in figure 2 it is shown, drive balanced pulse sequences to comprise two windows, one is polarization window, it is alternatively referred to as longitudinal relaxation time (T1) correlation window, one is echo acquirement window, it is possible to be called T2 (T2) correlation window, respectively corresponding τ1And τ2Two persistent period.In actual mechanical process, the two window acts on simultaneously and makes echo amplitude occur once to vibrate, and gathers an echo data, circulates this process and can collect one group of echo data.τ in Fig. 2DERepresented for half echo sounding time, 90X+Represent 90 degree of pulses of the X-axis positive direction along three-dimensional cartesian coordinate system (X, Y, Z), 90X-Represent 90 degree of pulses of the X-axis negative direction along three-dimensional cartesian coordinate system (X, Y, Z), 180Y+Represent 180 degree of pulses of the Y-axis positive direction along three-dimensional cartesian coordinate system (X, Y, Z).
In embodiment, drive the cycle-index of balanced pulse sequences can determine according to the sample frequency of default echo data.Such as, driving the cycle-index of balanced pulse sequences to determine according to the sample frequency of the echo data needed for experiment, the echo data of the more many collections of general cycle-index are more many, and the sample set data that oil content is evaluated are more many, and accuracy is also more high.
In embodiment, driving balanced pulse sequences to make the echo amplitude up-down vibration repeatedly of oily sludge sample, the change of these echo amplitudes can reflect the longitudinal relaxation time of sample and the information of T2.Driving balanced pulse sequences can quickly measure, by single sweep operation, the relaxation information obtaining sample the time of about 10 milliseconds, the rapidity of its measurement meets the requirement of chemical reaction flow process on-line measurement.
After obtaining echo data, the longitudinal relaxation time in oily sludge sample water-washing process and T2 first can be determined according to echo data, further according to longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.The constituent of oily sludge is complicated, T1 and the T2 of different component is different, but being likely to occur the different situation of the identical T2 of different component T1, individually research T1 and T2 may result in the impalpable problem appearance of individual components, affects the measurement explanation results of oil content.Owing to driving the echo data that balanced pulse sequences measurement obtains to contain T1 and the T2 information of sample simultaneously, therefore it is better than traditional T1 edit pulse sequence that can only measure T1 and measures the CPMG pulse sequence of T2.
In the oily sludge water-washing process of the embodiment of the present invention, oil content detection method can include the oil content modeling method based on one-dimensional nuclear magnetic resonance measurement data.Quick one-dimensional nuclear magnetic resonance pulse train can quickly be measured within the time of several seconds and obtain one group of echo data, and oil content modeling method will go out the oil content of sample according to this group echo data direct derivation.Specifically during the oil content in determining oily sludge sample water-washing process, it is possible to adopt partial least square method to set up the dependency mathematical model of echo data and oil content, determine the oil content in oily sludge sample water-washing process according to this dependency mathematical model.
The above-mentioned dependency mathematical model carrying out oil content explanation is based on PLS algorithm and sets up, the one-dimensional echo amplitude data recorded by multiple oily sludge sample is as independent variable, using the oil content data that adopt chemical method measurement to obtain after different washing times as dependent variable, thus building oil content interpretation model, complete the oil content on-line testing of pre-detection sample.Fig. 3 measures modeled example figure based on the oily sludge of one-dimensional nuclear magnetic resonance containing gauging rate in the embodiment of the present invention, as shown in Figure 3, first carry out oily sludge sample collecting, carry out oily sludge sample washing again, carry out quick one-dimensional nuclear magnetic resonance measurement afterwards respectively, the one-dimensional echo amplitude data recorded by multiple oily sludge sample is as independent variable, set up independent variable collection, carry out soxhlet extraction methods measurement, using the oil content data that adopt chemical method measurement to obtain after different washing times as dependent variable, set up dependent variable collection, finally build oil content interpretation model.
In embodiment, when the dependency mathematical model adopting partial least square method to set up described echo data and described oil content, it is possible to perform following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；This way it is possible to realize the main constituent expression formula to X and Y；
In self study process, a collection of premeasuring region oily sludge sample can be chosen, often wash a period of time, measure a nuclear magnetic resonance, NMR echo, and record the oil content that calculating is now washed, using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carry out principal component analysis；
Prediction process: set up the Y regression model to X as follows, namely find the functional relationship between X and Y:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation；T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval (such as X0=0.01X), it is determined that the matching relationship between X and Y.Next have only to carry out online the measurement of nuclear magnetic resonance, NMR echo in oily sludge water-washing process, it is possible to calculate, by model, the oil content change curve that this oily sludge is real-time.
As it has been described above, oil content detection method achieves the purpose of several aspect in the oily sludge water-washing process of the embodiment of the present invention: one is quick online purpose, and the method is based on the quick nuclear magnetic resonance, NMR Detection Techniques of one, the measurement that just can complete an oil content in several seconds；Two is lossless detection purpose, the nuclear magnetic resonance technique that the method adopts is a kind of lossless detection technology, only washing instrument (beaker such as washed or flask) need to be placed on monolateral nmr probe and can start on-line measurement in actual measurement process；Three is the purpose achieving nuclear magnetic resonance, NMR detection oil content, has built the greasy filth oil content interpretation model based on one-dimensional quick nuclear magnetic resonance measured data.
Based on same inventive concept, the embodiment of the present invention additionally provides oil content detecting device in a kind of oily sludge water-washing process, as described in the following examples.Owing to the principle of this device solution problem is similar to oil content detection method in oily sludge water-washing process, therefore the enforcement of this device may refer to the enforcement of oil content detection method in oily sludge water-washing process, repeats part and repeats no more.
Fig. 4 is the schematic diagram of oil content detecting device in oily sludge water-washing process in the embodiment of the present invention, and as shown in Figure 4, this device may include that
Echometric measurement module 401, for triggering monolateral nuclear magnetic resonance apparatus outside washing instrument, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, the oily sludge sample placed is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample in washing instrument；
Oil content determines module 402, for the echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
When being embodied as, echometric measurement module 401 specifically may be used for controlling washing instrument and is placed on the probe of monolateral nuclear magnetic resonance apparatus, and the sensitizing range of described probe is directed at oily sludge sample position.
When being embodied as, echometric measurement module 401 specifically may be used for triggering and drives the polarization window of balanced pulse sequences and echo acquirement window to act on simultaneously and make echo amplitude occur once to vibrate, gather an echo data, circulate this process and gather one group of echo data.
When being embodied as, echometric measurement module 401 specifically may be used for the sample frequency according to the echo data preset and determines the cycle-index of described driving balanced pulse sequences.
When being embodied as, oil content determines that module 402 specifically may be used for:
The longitudinal relaxation time in oily sludge sample water-washing process and T2 is determined according to described echo data；
According to described longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.
When being embodied as, oil content determines that module 402 specifically may be used for:
Partial least square method is adopted to set up the dependency mathematical model of described echo data and described oil content；
According to described dependency mathematical model, it is determined that the oil content in oily sludge sample water-washing process.
When being embodied as, oil content determines that module 402 specifically may be used for, when the dependency mathematical model adopting partial least square method to set up described echo data and described oil content, performing following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；
Prediction process: set up the Y regression model to X as follows:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation；T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval, it is determined that the matching relationship between X and Y.
In sum, the embodiment of the present invention measures the blank of technology based on solving existing online oily sludge oil content, propose based on oil content detection method and device in the oily sludge water-washing process of nuclear magnetic resonance technique, adopt monolateral nuclear magnetic resonance apparatus that as one-dimensional nuclear magnetic resonance, driving balanced pulse sequences is measured pulse train during enforcement, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, echo data according to oily sludge sample, determine the oil content in oily sludge sample water-washing process, the mensuration of oily sludge oil content can be quickly completed, thus the oil content realized in on-line checking oily sludge sample water-washing process；Further, monolateral nuclear magnetic resonance apparatus is that the oily sludge sample being opposite in washing instrument outside washing instrument carries out Nuclear Magnetic Resonance Measurement, it is possible to reach the purpose of lossless detection.
Can on-line checking to the oil content in oily sludge sample water-washing process, also help and extensive greasy filth washed industrial flow the technical parameters such as rational washing time, chemical levels, temperature, pressure are provided.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect.And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe.It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Particular embodiments described above; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (14)
1. oil content detection method in an oily sludge water-washing process, it is characterised in that including:
Oily sludge sample is placed in washing instrument；
Outside washing instrument, adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample；
Echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
2. the method for claim 1, it is characterized in that, described washing instrument outside adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, including:
Washing instrument is placed on the probe of monolateral nuclear magnetic resonance apparatus, and the sensitizing range of described probe is directed at oily sludge sample position.
3. the method for claim 1, it is characterized in that, described washing instrument outside adopt monolateral nuclear magnetic resonance apparatus, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, oily sludge sample is carried out Nuclear Magnetic Resonance Measurement, obtain the echo data of oily sludge sample, including:
Trigger the polarization window driving balanced pulse sequences and echo acquirement window acts on simultaneously and makes echo amplitude occur once to vibrate, gather an echo data, circulate this process and gather one group of echo data.
4. method as claimed in claim 3, it is characterised in that the cycle-index of described driving balanced pulse sequences is determined according to the sample frequency of the echo data preset.
5. the method for claim 1, it is characterised in that the described echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process, including:
The longitudinal relaxation time in oily sludge sample water-washing process and T2 is determined according to described echo data；
According to described longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.
6. the method for claim 1, it is characterised in that the described echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process, including:
Partial least square method is adopted to set up the dependency mathematical model of described echo data and described oil content；
According to described dependency mathematical model, it is determined that the oil content in oily sludge sample water-washing process.
7. method as claimed in claim 6, it is characterised in that described employing partial least square method sets up the dependency mathematical model of described echo data and described oil content, including following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；
Prediction process: set up the Y regression model to X as follows:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation, and T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval, it is determined that the matching relationship between X and Y.
8. oil content detecting device in an oily sludge water-washing process, it is characterised in that including:
Echometric measurement module, for triggering monolateral nuclear magnetic resonance apparatus outside washing instrument, driving balanced pulse sequences is measured pulse train as one-dimensional nuclear magnetic resonance, the oily sludge sample placed is carried out Nuclear Magnetic Resonance Measurement, it is thus achieved that the echo data of oily sludge sample in washing instrument；
Oil content determines module, for the echo data according to oily sludge sample, it is determined that the oil content in oily sludge sample water-washing process.
9. device as claimed in claim 8, it is characterised in that described echometric measurement module is placed on the probe of monolateral nuclear magnetic resonance apparatus specifically for controlling washing instrument, and the sensitizing range of described probe is directed at oily sludge sample position.
10. device as claimed in claim 8, it is characterized in that, described echometric measurement module acts on simultaneously make echo amplitude occur once to vibrate specifically for triggering the polarization window driving balanced pulse sequences and echo acquirement window, gather an echo data, circulate this process and gather one group of echo data.
11. device as claimed in claim 10, it is characterised in that described echometric measurement module specifically for determining the cycle-index of described driving balanced pulse sequences according to the sample frequency of the echo data preset.
12. device as claimed in claim 8, it is characterised in that described oil content determine module specifically for:
The longitudinal relaxation time in oily sludge sample water-washing process and T2 is determined according to described echo data；
According to described longitudinal relaxation time and T2, it is determined that the oil content in oily sludge sample water-washing process.
13. device as claimed in claim 8, it is characterised in that described oil content determine module specifically for:
Partial least square method is adopted to set up the dependency mathematical model of described echo data and described oil content；
According to described dependency mathematical model, it is determined that the oil content in oily sludge sample water-washing process.
14. device as claimed in claim 13, it is characterized in that, described oil content determines that module is specifically for when the dependency mathematical model adopting partial least square method to set up described echo data and described oil content, performing following self study process and prediction process:
Self study process: using the echo data of the oily sludge sample of premeasuring as argument data collection X, by corresponding oil content operation dependent variable data set Y, carries out the principal component analysis of oily sludge sample as follows:
Wherein, m1And n1Respectively one group of main constituent of X and Y；a11,a12,a13And β11Respectively represent coefficient during X and Y with main constituent；ρ1And γ1The respectively coefficient matrix of X and Y, by solving m1And n1Covariance cov (m1,n1) obtain；
Prediction process: set up the Y regression model to X as follows:
Wherein, X0And Y0For residual error；σ and τ is least-squares estimation；T is matrix transpose symbol；
Circulation is estimated until X0And Y0Little of tolerance interval, it is determined that the matching relationship between X and Y.
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