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48results about How to "Easy analysis" patented technology

Post-desulphurization flue gas moisture content determination method and apparatus

The invention relates to a post-desulphurization flue gas moisture content determination method and apparatus. The apparatus comprises a sampling tube, a heat tracing ventilation pipe, a gas suction pump, a flow regulating valve, a flow meter, a three-way valve, a temperature measuring instrument, a pressure measuring instrument, and a Karl Fischer titrator, which are connected sequentially. The determination method comprises the steps that: (1) 100ml of anhydrous methanol is added into a titration cup, and the titrator is reset to a system blank value. (2) standard water is accurately measured, and is injected into the titration cup; and the concentration of a Karl Fischer reagent is measured by using the titrator; (3) the pipeline is washed by using flue gas for 10-15min; (4) a flue gas flow rate is controlled at 50-100mL/min, and a ventilation time is 2-5min; and titration is carried out by using the titrator; and (5) with the titrator, the post-desulphurization flue gas moisture content is automatically calculated. According to the post-desulphurization flue gas moisture content determination apparatus provided by the invention, a Karl Fischer titration method is used in flue gas moisture content determination, the analysis operation is simple and fast, and analysis result is accurate and reliable. Therefore, an instant and accurate basis can be provided for production operation adjustment and data calculation.
Owner:STATE GRID HEBEI ELECTRIC POWER RES INST +2

Tracing and monitoring method of multi-stage fracturing flow-back fluid

The invention provides a tracing and monitoring method of a multi-stage fracturing flow-back fluid. The tracing and monitoring method of the multi-stage fracturing flow-back fluid comprises the following steps of injecting a tracer agent into each formation in the horizontal well multi-stage fracturing operation process; in the fracturing fluid flow-back process, periodically detecting the concentration of the tracer agent in the fracturing flow-back fluid; and according to the detected concentration of the tracer agent, calculating amounts of a fracturing fluid and formation water in the fracturing flow-back fluid of each formation and drawing the section of the fracturing flow-back fluid of each formation so as to analyze a fracturing situation of each formation. According to the tracingand monitoring method of the multi-stage fracturing flow-back fluid, the fracturing situation of each formation can be quantitatively monitored; the judged fracturing situation is visual and accurateand can be quantitatively analyzed, and the error of the fracturing situation is small; and an important guiding effect on the fracturing work of the same formation is realized. After the fracturingsituation is obtained by using the tracing and monitoring method of the multi-stage fracturing flow-back fluid, a design scheme can be optimized for situations of different formations so that the fracturing targeted property is higher, the purposefulness is higher and the significance in the actual production is important.
Owner:PETROCHINA CO LTD

Method for synchronizing data acquired in hot continuous rolling process

InactiveCN102323794AEasy analysisEliminate the effects of space-time transitionsTotal factory controlProgramme total factory controlData synchronizationHysteresis
The invention discloses a high-dimension time sequence data synchronization method which is applied to a hot continuous rolling process, aims to solve the problems that the obtaining of the variables of different frames from a hot continuous rolling manufacturing process and other time sampling has hysteresis, time-varying and other phenomena so that the difficulty in quality detect cause analysis or control system debugging and optimization analysis is increased, builds spatio-temporal transformation relationship with the relationship among invariants in the hot rolling process, converts high-dimensional data which is sampled in equal time into synchronous sampling data with the same volume in a space, and establishes the spatial synchronous corresponding relationship of the high-dimensional data on strip steel. During a time-space conversion process, an undetermined coefficient in equal volume sample is first removed, then equal volume sampling is carried out with the spatio-temporal transformation relationship, and the sampling values of non-aligned points are estimated through an interpolation method during an equal volume acquisition process. A hot continuous rolling process is taken for an example to verify the effectiveness of the method, and the example shows that the synchronized data benefits to the quality defect cause analysis of some types of products.
Owner:UNIV OF SCI & TECH BEIJING

Method for quickly analyzing phase component of building gypsum

The invention belongs to the technique of building material analysis and relates to a method for quickly analyzing a phase component of building gypsum. The defects in the prior art are as follows: the demand on analytical instrument is high, the demand on the test condition is high, the analysis time is long and the operation steps are complex. The method comprises the following three steps: for quickly finishing the phase component analysis for the building gypsum, by utilizing the principle that the building gypsum loses the adhered water at 50 plus/minus 5 DEG C, loses all the crystal water above 180 DEG C and can have hydration reaction with water, the anhydrous gypsum in the building gypsum can combine with water in a 95% ethanol solution so as to form the hemi-hydrated gypsum, and the dihydrate gypsum cannot be generated by combining the hemi-hydrated gypsum with the water, wherein the three steps are as follows: measuring the contents of the adhered water and the anhydrous gypsum, measuring the content and purity of the hemi-hydrated gypsum, and measuring the content of the dihydrate gypsum. The method provided by the invention has the advantages that the analysis device is simple, only one halogen moisture tester is required, the test time is short, and the analysis result has stability and repeatability.
Owner:SHANGHAI RES INST OF BUILDING SCI CO LTD

Mid-infrared spectrum identification method of adulterated pearl powder

The invention provides a mid-infrared spectrum identification method of adulterated pearl powder. The method comprises the step of qualitatively and quantitatively analyzing the suspected adulterated shell powder, calcium carbonate powder and talcum powder in the to-be-tested pearl powder by use of the Fourier transform infrared spectrum. The basic principle of the identification method is as follows: the calcium carbonate in the pearl powder is an aragonite type, and the calcium carbonate in the calcium carbonate powder is a calcite type; after the shell powder is calcined at the specific temperature, the calcium carbonate of the aragonite type is completely transformed to the calcium carbonate of the calcite type, and the calcium carbonate in the calcined pearl powder is still remained in the aragonite type; furthermore, the main ingredient of the talcum powder is magnesium silicate, the Si-O stretching vibration absorption peak of the magnesium silicate is located in the infrared region, and is obviously different from the feature peak of the pearl powder. The mid-infrared spectrum identification method of the adulterated pearl powder provided by the invention has the advantages of being fast in sample manufacturing, simple in analysis operation, convenient and fast, small in error, and low in cost; therefore, the method has the excellent scientific research value and the market value.
Owner:DSSUN NEW MATERIAL SHANDONG

Method of determining drilling depth in real time according to operation parameters of hydraulic drilling rig

The invention discloses a method of determining the drilling depth in real time according to operation parameters of a hydraulic drilling rig and belongs to the fields such as mine water prevention and control, rock burst prevention and control and gas extraction technologies. The rotating pressure and the feed pressure of the drilling rig are measured in real time through a pressure transmitter. The drilling speed of a drilling rod is tested through a wire-drawing displacement sensor. Then the eigenvalues of the rotating pressure, the feed pressure and the drilling speed are determined aiming at every drilling rig. In the operation process of the drilling rig, the working state (drilling, or idling, or drilling rod feeding or drilling rod withdrawing) of the drilling rig is determined according to the relationship of the parameters and the eigenvalues of the parameters. When the drilling rig is in the drilling state, the drilling speed is multiplied by drilling time, namely the drilling depth during the time is obtained, and finally the drilling depths of effective drilling time periods are accumulated, namely the real time drilling depth can be obtained. The problems that an existing method needs long time and great effort, and the result is not reliable are solved.
Owner:CHINA UNIV OF MINING & TECH

Method for simultaneously measuring trivalent chromium and hexavalent chromium in water samples by aid of low-pressure ion chromatograms and inductively coupled plasma mass spectra in combination manner

The invention provides a method for simultaneously measuring trivalent chromium and hexavalent chromium in water samples by the aid of low-pressure ion chromatograms and inductively coupled plasma mass spectra in a combination manner.The method is implemented by the aid of an analytical instrument which comprises a low-pressure pump, a six-way sample injection valve, a sample injection ring, a low-pressure adsorption column, a low-pressure anion separation column and an inductively coupled plasma mass spectrometer.The method includes steps of 1, surveying and mapping base lines; 2, surveying and mapping spectrograms of the trivalent chromium and the hexavalent chromium in the test samples; 3, replacing the test samples by a series of standard samples with trivalent chromium and hexavalent chromium with known concentrations, carrying out operation at the steps 1 and 2 again to obtain spectrograms of the trivalent chromium and the hexavalent chromium in the series of standard samples, and drawing working curves of the trivalent chromium/the hexavalent chromium; 4, substituting peak height values of the spectrograms of the trivalent chromium/the hexavalent chromium in the test samples into regression equations of the working curves, obtained at the step 3, of the trivalent chromium/the hexavalent chromium and computing the concentrations of the trivalent chromium and the hexavalent chromium in the test samples.The concentrations of the trivalent chromium/the hexavalent chromium in the standard samples are used as horizontal coordinates for drawing the working curves of the trivalent chromium/the hexavalent chromium, and peak heights of the spectrograms of the trivalent chromium/the hexavalent chromium in the standard samples are used as vertical coordinates for drawing the working curves of the trivalent chromium/the hexavalent chromium.
Owner:SICHUAN UNIV

Single cell Raman spectrum acquisition number estimation method, data processing method and device

The invention belongs to the technical field of data processing, and discloses a single-cell Raman spectrum acquisition number estimation method, a data processing method and a data processing device. The single-cell Raman spectrum acquisition number method comprises the following steps: calculating according to a Raman spectrum signal-to-noise ratio, percentage content and a specified threshold value of a target analyte to obtain a probability value that the target analyte is detected; then, the collection number of the Raman spectrums is calculated, so that the detection probability value of the target analyte can be more reasonably calculated under the condition that spectrums of the target analyte and other substances are overlapped, namely background noise exists, and the collection number of the Raman spectrums is more accurately calculated. According to the single-cell Raman spectrum data processing method and the single-cell Raman spectrum data processing device, an analysis process suitable for analyzing single-cell Raman spectrum data is integrated, and a newly developed method for estimating the collection number of Raman data is embedded, so that a semi-automatic analysis platform for single-cell Raman spectrum analysis can be provided for a user; and the single-cell Raman spectrum analysis operation can be simplified.
Owner:GUANGZHOU MEDICAL UNIV

Trace phosphorylated peptide desalting column

The invention relates to a trace phosphorylated peptide desalting column, which takes a reversed-phase C18 and polypyrrole composite as a separation material, makes use of electrostatic interaction between positive charges on polypyrrole nitrogen atoms and electronegative phosphate groups and pi-pi stacking interaction of polypyrrole unsaturated double bonds and aromatic amino acid residues to compensate insufficient of C18 stationary phase single hydrophobic interaction and enhance interactions of separation materials and target molecules. Pyrrole and ammonium persulfate are used as raw materials, processed by ultrasound at room temperature, then washed, filled, and sealed to get the trace phosphopeptide peptide desalting column. The polypyrrole-modified quartz material prepared by the invention is high in separation efficiency, purity and stability. The material can be used in acidic conditions and alkaline conditions, so peptides which cannot be detected by conventional C18 stationary phases can be detected, signal to noise ratio is high, and interference is small. The method is simple, does not require sophisticated equipments, can effectively gather phosphorylated peptides of low abundance, is simple in sample analysis operation, and has no complex sample preparation.
Owner:HUAZHONG NORMAL UNIV

Iron tower support material processing method

The invention discloses an iron tower support material processing method, and the method is closer to the reality than traditional methods, is simpler to operate than theoretical analysis, and enables calculation results to be closer to facts under the premise of increasing tiny complexity. The method comprises the following steps of: (1) calculating the maximum internal force of each stressed material component under a plurality of using conditions by utilizing a finite unit method calculation tool; (2) loading a prescribed percentage of the maximum internal force of a supported component onto a support point in a direction vertical to a supported rod according to an engineering design requirement, so as to construct a model; (3) for the model, calculating influences, on a support rod, of a support force P1 by using a finite unit method, so as to obtain an internal force of the support rod; (4) obtaining minimum specification and number of bolts required by the components according to the calculated internal force; (5) substituting the calculation result back into the model and accurately determining and optimizing a boundary condition; (6) judging whether the calculation result is changed or not, if the judging result is positive, skipping to the step (1), and otherwise, executing step (7); and (7) successfully carrying out optimization and ending the operation.
Owner:BEIJING DAOPOWER

Trace phosphorylated peptide desalting column

The invention relates to a trace phosphorylated peptide desalting column, which takes a reversed-phase C18 and polypyrrole composite as a separation material, makes use of electrostatic interaction between positive charges on polypyrrole nitrogen atoms and electronegative phosphate groups and pi-pi stacking interaction of polypyrrole unsaturated double bonds and aromatic amino acid residues to compensate insufficient of C18 stationary phase single hydrophobic interaction and enhance interactions of separation materials and target molecules. Pyrrole and ammonium persulfate are used as raw materials, processed by ultrasound at room temperature, then washed, filled, and sealed to get the trace phosphopeptide peptide desalting column. The polypyrrole-modified quartz material prepared by the invention is high in separation efficiency, purity and stability. The material can be used in acidic conditions and alkaline conditions, so peptides which cannot be detected by conventional C18 stationary phases can be detected, signal to noise ratio is high, and interference is small. The method is simple, does not require sophisticated equipments, can effectively gather phosphorylated peptides of low abundance, is simple in sample analysis operation, and has no complex sample preparation.
Owner:HUAZHONG NORMAL UNIV
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