51 results about "Total inorganic carbon" patented technology

The invention provides a multivariate well logging computing method for the total organic carbon and the hydrocarbon generating potential of hydrocarbon source rocks in salt-lake facies. The method comprises the steps of conducting standardization and normalization on logging curves of different wells, conducting core proper-horizon restoration on hydrocarbon source rock total organic carbon data measured through experiments, classifying the hydrocarbon source rocks in the salt-lake facies, reading logging curve data, obtained after core proper-horizon restoration correction, of total organic carbon experimental points, conducting R-type hierarchical clustering analysis on the logging data and the total organic carbon of the rocks, establishing logging evaluation models of the TOC according to different lithological characters, and conducting computing to obtain TOC data so as to work out rock pyrolysis data. The multivariate well logging computing method for the total organic carbon and the hydrocarbon generating potential of the hydrocarbon source rocks in the salt-lake facies can be used for evaluating the mass and the hydrocarbon generating potential of the hydrocarbon source rocks, of special lithological characters, in the salt-lake facies, and the method can be applied to provide a great number of evaluation data for hydrocarbon source rock evaluation and oil and gas resource quantity evaluation.

The invention provides a method for forecasting a TOC (Total Organic Carbon) content of a shale reservoir stratum. The method comprises the following steps: fitting a single well TOC content curve on the basis of a single well TOC content calculating equation; calculating a single well elastic parameter curve; establishing a relevance equation between the TOC content and the elastic parameter according to a crossing condition of the single well TOC content curve and the single well elastic parameter curve; inverting the elastic parameter on the basis of a three-dimensional earthquake pre-stack channel gathering elastic parameter inverting method; converting the inverted elastic parameter into TOC content data according to the relevance equation between the TOC content and the elastic parameter; applying the TOC content data and forecasting the TOC content horizontal distribution along a target layer of the shale reservoir stratum. According to the invention, the logging information, VSP logging achievement and three-dimensional earthquake data are comprehensively applied for quantitatively forecasting the TOC content horizontal distribution, so that the horizontal distribution of the TOC content in the shale reservoir stratum can be accurately evaluated. The method has the advantages of complete analysis, higher forecasting accuracy, lower cost, and the like.

The invention relates to a method for establishing a logging prediction mathematic model about TOC (Total Organic Carbon). The method comprises the following steps: (1) obtaining organic carbon data and logging curve data; (2) making a single well comprehensive columnar diagram; (3) carrying out signal well depth location on organic carbon data, and regulating the depth position of an organic carbon sampling point; (4) computing correlated coefficients of each logging curve and the TOC; (5) going to the next step if the TOC and GR have highest correlated coefficients and best correlation, otherwise, failing to establish the logging prediction mathematic model about the TOC; (6) making scatter diagrams of the TOC and the GR, respectively establishing a linear relational expression, a quadratic function expression and an index relational expression of the TOC and the GR; (7) selecting the relational expression with the best correlation between the TOC and the GR, wherein the relational expression is a mathematic model for predicting the TOC of multiple wells in a destination zone in the next stage. According to the method for establishing the logging prediction mathematic model about the TOC, disclosed by the invention, the prediction problem of the TOC in a low-organic matter abundance carbonatite hydrocarbon source rock is simply and effectively solved.

Methods are provided for utilizing the results of compositional modeling analysis to obtain accurate total organic carbon values without the need for an oxidation step or lengthy sample preparation, and also to calculate the organic carbon value attributable to contaminants, such as drilling additives.

The invention relates to a seawater total organic carbon (TOC) automatic on-line monitoring instrument which comprises an inorganic carbon removing unit, a sample introduction unit, an oxidation unit,a cooling unit, a gas-liquid separating unit and a carbon dioxide detecting unit; wherein the inorganic carbon of the sample to be detected is blown and removed by the inorganic carbon removing unit;then the sample to be detected is sent into a pipeline through a six-way valve, mixed with potassium persulfate sodium borate, heated in an ultraviolet device and has catalytic reaction under the ultraviolet irradiation; the organic carbon in the sample is oxidized into inorganic carbonate which is then mixed with hydrochloric acid to be transformed into carbonic acid; and after gas-liquid separation, carbon dioxide gas can be formed and finally enters into a non-dispersive infrared analyzer to be detected. The instrument can be simultaneously used for measuring the inorganic carbon and the organic carbon in the water sample, so that the TOC in the seawater can be rapidly and automatically measured in an on-line way.

The invention discloses an automatic titration device for anaerobic fermentation buffer ability, which relates to the technical field of biological fermentation and is used for solving the problem of failure in simultaneous accurate measurement of mass concentration of total inorganic carbon (TIC) and volatile fatty acids (VFA) in anaerobic fermentation broth in the prior art. The automatic titration device comprises a power module, a man-machine exchange module, a data acquisition module, a driving transmission module and a liquid sucking / dropping module. The automatic titration device adopts the combined and integrated structure, application software provides a user operation panel, the panel of corresponding actual instrument realizes control and signal expression function of the instrument, the automatic titration device can simultaneously realize accurate measurement of mass concentration of TIC and VFA in the anaerobic fermentation broth by once titration, also can realize the functions of automatic calibration of a pH meter, automatic titration and liquid supplement, real-time generation of titration curve, data processing, display and storage, is suitable for pH, TIC and VFA mass concentration determination of anaerobic fermentation broth, and also can be used for titration of other samples.

The invention discloses a method for reducing total organic carbon content of zeolite molecular sieve production wastewater by one-step illumination technique. The method is characterized in that hydrogen peroxide is added into zeolite molecular sieve production wastewater to generate hydroxyl free radicals with superstrong oxidizing ability under ultraviolet irradiation so as to conduct oxidative degradation on the organic nitrogen-containing compound in the zeolite molecular sieve production wastewater, and the organic nitrogen-containing compound is one or more of a quaternary ammonium salt, quaternary ammonium base, and organic amine. Compared with traditional methods, the method provided by the invention simplifies the treatment process, saves the treatment time, and is easy to operate. For wastewater containing quaternary amine base and organic amine, the method provided by the invention can directly treat the wastewater without adding acid to conduct neutralization, and the treated water sample is close to neutral.

A total organic carbon meter including a sample introduction mechanism that includes a case in which a sample introduction and rod opening is formed; a sample introduction rod at the front end part of which a sample tray is arranged and which is inserted in the set direction through the sample introduction and rod opening; and a cover formed on the outer circumferential surface of the sample introduction rod, wherein the insertion of the sample introduction rod, on the front end part of which a sample tray has been arranged, through the sample introduction and rod opening, causes the gap between the sample introduction and rod opening and the sample introduction rod to be closed by the cover.

The invention provides an online synchronous and continuous monitor of total phosphorus, total nitrogen and total organic carbon of ultraviolet digestion. The online synchronous and continuous monitor is characterized by comprising a washing device, a micro-filter, a plurality of reagent bottles, a plurality of peristaltic pumps, an acidification reactor, an oxidization reactor, a mixer, a color developing reactor, an oxygen bottle, a flow meter and the like, which are connected with a water sample pipeline to be detected, and is provided with an infrared carbon dioxide detector, a total nitrogen detector, a total phosphorus detector, a sewage flow detector and the like for detecting; then a signal processor, a data processor and the like are used for processing detected data; continuous running of a water sample and a reagent is realized by utilizing continuous running of the plurality of peristaltic pumps, and the degradation efficiency and the degradation speed are high; the efficiency of continuous oxidization is not lower than 95%; a traditional constant volume sampling mode is changed into a mobile sampling mode, and a water sample to be analyzed can be sampled for 30 times or above every minute; and the single-item average value data of the concentration of the total phosphorus, the total nitrogen and the total organic carbon, which are collected and stored every day, reaches 1440 times or above, so that real-sense continuous monitoring of the total phosphorus, the total nitrogen and the total organic carbon is realized.

The invention relates to a continuous, synchronous and online monitoring method and instrument for the concentration and total quantity of TOC (total organic carbon), TN (total nitrogen) and TP (total phosphorus). The instrument mainly comprises an electromagnetic induction flowmeter, a sampling head, a reagent bottle, a carrier gas cylinder, an acidification reactor, an oxidation reactor, a semiconductor condenser, an ion absorber, a CO2 detector, a nitrate nitrogen detector, an orthophosphate detector and a data processor. The sampling head is connected with the acidification reactor through a sampling water pipe, a peristaltic pump and a flow sensor; ...; the CO2 detector, the nitrate nitrogen detector, the orthophosphate detector and the electromagnetic induction flowmeter are connected with the data processor by circuits. By means of the same set of sampling, acidification, oxidation, flow collection and data processing system and the three separate detectors, the concentration and total quantity of TOC, TN and TP in water can be measured continuously and synchronously. The instrument has the advantages of multifunction, compact structure, continuous data measurement, synchronism and instantaneity of measurement of different indexes, etc.

Process for the production of a biogas containing methane from an organic matter amenable to anaerobic digestion comprising feeding an anaerobic digester with the organic matter, said anaerobic digester containing a digestion medium comprising microorganisms capable of digesting said organic matter, wherein the total inorganic carbon concentration of the digestion medium is maintained above 9000 mg of equivalent CaCO3 / l and the buffering capacity is maintained above 200 mmol / l by the addition of a buffering reagent comprising sodium bicarbonate to the digestion medium.

The present invention relates to a method for exploitation of a sedimentary basin. Exploitation of the sedimentary basin is permitted by the choice of zones of interest within the basin, the zones being determined by means of maps of total organic carbon TOC and of hydrogen index HI of at least one sedimentary layer. According to the invention, the maps of total organic carbon TOC and of hydrogen index HI are obtained taking into account the current values of TOCA(W) and HIA(W) at the level of the well and taking into account the maps of bathymetry BM and of sedimentation rate SM.

A carbon dioxide enrichment device, comprising:first and second gas diffusion electrodes; andan electrolytic solution existing between them to be in contact with them,wherein the electrolytic solution contains solvent and solute dissolved in it, and the solute is dissolved to form a dissolved inorganic carbon containing carbonic acid, hydrogen carbonate ions, or carbonic acid ions; oxygen is consumed by an oxygen reduction reaction on the first gas diffusion electrode, whereby a dissolved inorganic carbon is formed by a dissolution and ionization reaction of carbon dioxide in the solvent; the dissolved inorganic carbon derived from the solute or the dissolved inorganic carbon is transported to the second gas diffusion electrode; and oxygen is formed from the solvent in the vicinity of the second gas diffusion electrode by an oxidation reaction of the solvent on it, and carbon dioxide is formed from the dissolved inorganic carbon.

The invention belongs to the field of microalgae cultivation, and particularly relates to a method for cultivating microalgae by using CO2 as a carbon source. Tris is added into a microalgae cultivating solution containing the CO2 gas serving as the carbon source, so that the concentration of the total inorganic carbon source in the cultivation solution is obviously increased, and the biological yield of the microalgae is increased. Particularly in the cultivation solution in which the macroalgae with the pH value of 6-8 grows properest, according to the method, higher CO2 utilization rate can be guaranteed; meanwhile, the added Tris cannot be consumed by microalgae cells, so that a repeated carbon fixing effect can be achieved, and the economic property is improved. Compared with mono ethanol, Tris nearly does not have a harm effect on the microalgae; when the adding final concentration is 2-8 mmol / L, the biomass yield is increased; furthermore, when the adding final concentration is 4-6 mmol / L, the increase degree is the largest; meanwhile, the biochemical composition of the microalgae cells cannot be affected by the Tris.

The invention discloses a method for obtaining the total organic carbon content of a marine underground medium. The method includes the following steps that: Occam inversion calculation is performed on acquired electromagnetic field data in an exploration region, so that the resistivity of the exploration region can be obtained; after the resistivity information is converted into complex resistivity through a Cole-Cole model, Occam inversion calculation is performed on the complex resistivity, so that polarization rate can be obtained; and the total organic carbon content information of the exploration region is obtained through utilizing the positive correlation between the polarization rate and the total organic carbon content. Compared with the prior art, and with the method of the invention adopted, the distribution rule of the organic carbon content in a plane can be obtained without well drilling required, and the method is of great significance for predicting gas bearing formations, guiding offshore oil and gas exploration and improving the success rate of misering and development.

The invention relates to a sensing system for water quality monitoring, in particular to a TOC (total organic carbon) detection system and solves problems of light scattering, difficulty in weak light signal extraction and range adjustment and flow rate limitation of ultraviolet absorptive TOC detection equipment in the prior art. Green light and purple light are emitted to a water sample chamber, absorbed by water in the water sample chamber, reflected by reflectors and emitted to corresponding detectors, and the light emitted to the detectors is quite weak; the detectors convert optical signals into electrical signals which are amplified through a phase-locked amplifier prior to being sent to corresponding processors, the processors compare a standard value with data obtained after loss resulted from absorption through water in the water sample chamber to obtain a loss difference value, and the content of TOC in water can be obtained by processing of the loss difference value. The TOC detection system is mainly used for water quality monitoring.

A process for removing organic compounds from a brine solution permits processing of that solution in a chlor-alkali electrochemical cell. A brine solution containing a mixture of nonvolatile organic compounds is introduced into a tank with a selected volume of acid and is heated to boiling. Nonvolatile organic compounds in the solution are decomposed such that they become volatile compounds, which are removed by distillation from the tank or by additional subsequent steam distillation. The resulting brine solution has a final total organic compound (TOC) level sufficiently low to render its suitable for use in a membrane, diaphragm or other type of chlor-alkali electrochemical cell.

A method for identifying total organic carbon content of source rock in whole well interval based on logging information includes collecting single well logging data and single well mudstone core or wall core total organic carbon content data, Removing abnormal total organic carbon content data from the total organic carbon content data; Making a single well comprehensive histogram; establishingThe regression equation between TOC content and logging parameters. Using 80% total organic carbon content data and single well logging data at corresponding depth to calculate and substitute the parameters in the equation for estimating total organic carbon content and logging parameters inot the regression equation to obtain the logging prediction model. The total organic carbon (TOC) content in the whole source rock interval of the well is predicted by using the logging parameters into the logging prediction model of TOC content. The remaining 20% of the total organic carbon (TOC) after removal of anomalies was used to test the predictive effect of TOC predicted value. The prediction accuracy rate of the method of the invention is obviously improved compared with the current commonly usedmethod.

The invention discloses a method for measuring the daily mean stable carbon isotope composition of atmospheric carbon dioxide, which is characterized by comprising the steps of (I) measuring sodium bicarbonate produced by different manufacturers as tracer agents; (II) adding sodium bicarbonate into a nutrient solution respectively, and setting the concentration of sodium bicarbonate in the nutrient solution to 10mM and the pH value to 8.30; (III) cultivating the plants with same growth cycle by use of the prepared solution at the same time, and after 24 hours of cultivation, separately measuring the values of the stable carbon isotope composition (delta)13C in two isotope-labeled nutrition solutions, namely a value of (delta)1 and a value of (delta)2; (IV) substituting the measured values of (delta)C1, (delta)C2, (delta)1 and (delta)2 into an equation, and calculating the proportion fB of added sodium bicarbonate to total inorganic carbon in the solution; (V) judging whether the value of fB is less than 0.6, fetching the measured values obtained by an experiment when the value of fB is less than 0.60, substituting the measured values into an equation, and calculating the average value of inorganic carbon (delta)13C entering the culture solution in atmospheric carbon dioxide within the time period (delta)a; (VI) substituting the calculated (delta)a into an equation (delta)Ca=(delta)a+(Delta)CO2(air)-HCO3(aq), and calculating the daily mean stable carbon isotope composition (delta)Ca of atmospheric carbon dioxide.

The invention discloses a method and system for determining total organic carbon content. The method comprises the steps that a total gamma intensity curve, a uranium-removing gamma intensity curve, a thorium content curve and a uranium content curve are obtained; the total gamma intensity curve and the uranium-removing gamma intensity curve are overlapped and a rich organic matter well section is recognized; for each down-hole sampling point of the rich organic matter well section, separation degrees of the overlapped total gamma intensity curve and the uranium-removing gamma intensity curve at the down-hole sampling point are calculated; the ratio of thorium and uranium of the thorium content curve and the uranium content curve at the down-hole sampling point is calculated; and according to the separation degree and the ratios of thorium and uranium, the total organic carbon content of each down-hole sampling point in the rich organic matter well section is determined. The method and the system for determining the total organic carbon content is high in practicality and universality, enriches the organic matter evaluating method for abnormal shale reservoir stratums, and provides an efficient technical means for the organic carbon content quantitative evaluation of rich organic matter rocks not suitable for a traditional organic matter evaluating method in complex geological conditions.

A plurality of stages is employed to reduce the total organic carbon (TOC) content of a brine by-product stream to produce a recyclable brine stream having a TOC content of less than about 10 ppm. In a first stage treatment, a brine by-product stream may be subjected to chlorinolysis at a temperature of less than about 125 DEG C to obtain a chlorinolysis product having a TOC content of less than about 100 ppm, which may be treated in a second stage with activated carbon to obtain a TOC content of less than about 10 ppm. The chlorinolysis may be a reaction with sodium hypochlorite, which may be produced in situ by treatment of the brine by-product stream with chlorine gas and sodium hydroxide. The brine by-product stream may contain a high amount of difficult to remove glycerin, such as a brine by-product stream from the production of epichlorohydrin from glycerin.

The invention provides a method for eliminating ammonia inhibition in an anaerobic fermentation process of livestock and poultry excrement. According to the method, a struvite crystallization and sedimentation technology is used for detecting the concentration of NH<4+> in an ammonia inhibition system under the conditions that the pH value is 7-9, and the mass concentration ratio of volatile fatty acid to total inorganic carbon is less than 0.4; magnesium salt and phosphorus salt are added into a livestock and poultry excrement fermentation reaction system according to a molar ratio of the NH<4+> to Mg<2+> to PO4<3-> being equal to 1: 1: 1; the concentration of ammonia nitrogen is reduced to about a concentration value of the fermentation process without ammonia inhibition. The method for eliminating the ammonia inhibition in the anaerobic fermentation process of the livestock and poultry excrement is established by studying the influence factors of an ammonium magnesium phosphate reaction in the inner environment of an anaerobic fermentation tank and the self-limiting factors of the reaction. The method is simple in technology; furthermore, struvite precipitation produced in the reaction is slow release fertilizer, and not only can eliminate the ammonia nitrogen inhibition, but also can recover nutrients such as nitrogen and phosphorus, so that the operating cost is lowered.

The present invention belongs to the field of microporous material technology, and is especially one novel kind of organic and inorganic carbon hybridized silicon zeolite solid acid and its preparation process. The material is obtained through mixing silicon zeolite molecular sieve with aldehyde solution or solid, and hydrothermal reaction or gas / solid phase reaction to substitute skeleton oxygen with aldehydo radical. By means of altering the C1-C3 alkyl radical carbon chain length in aldehyde and altering the structure of base zeolite, the solid acidity and pore property of the novel catalyst material may be regulated to meet the practical requirement. The synthesis process has mild condition, high repeatability, simple preparation, low cost and environment friendship, and is s industrial production.

The invention provides a water tank antirot material dissolvent characteristic detection test method, comprising the following steps: sample pretreatment: taking an antirot coating sample, weighing, and obtaining the size; initial dissolvent: soaking the sample in test water, sampling at a soaking time interval of 1 to 3 days in the first 15 soaking days, then sampling for 3 to 5 times at an interval of 3 to 5 days, and then sampling at an interval of 10 to 15 days, and detecting concentration of dissolved total organic carbon each time; deep dissolvent: talking out a test block, soaking in the test water again, taking a soak solvent at an interval of 1 to 3 days in the first 15 soaking days for detection, then sampling for 3 to 5 times at an interval of 3 to 5 days, detecting concentration Cs of dissolved total organic carbon each time, and when the soak solvent is taken for the last time, detecting other ion concentrations; data processing: performing analytical processing on a detection result of a dissolved matter, and respectively calculating dissolvent rates of total organic carbon of the test block in the initial dissolvent stage and the deep dissolvent stage, thus obtaining water tank antirot material dissolvent characteristics.

The invention discloses an ultraviolet ray catalyst used for detecting total organic carbon content in water. The catalyst comprises an ultraviolet ray lamp with a power line, and a fluid channel with a water inlet and a water outlet. The structure of the fluid channel comprises that: a first fixing device is arranged on a first end of a titanium metal sleeve pipe; the water inlet is arranged at the first fixing device, and is connected in a sealed state with the titanium metal sleeve pipe through a sealing ring; a second fixing device is arranged on a second end of the titanium metal sleeve pipe; the second fixing device is connected in a sealed state with the titanium metal sleeve pipe; the ultraviolet ray lamp is centralized and fixed in the inner cavity of the titanium metal sleeve pipe through the second fixing device; the cavity between the titanium metal sleeve pipe and the ultraviolet ray lamp forms a catalyzing chamber with the fluid channel; and the water outlet is arranged on the lower part of a second end of the titanium metal sleeve pipe. The technical effect is that: with a direct irradiation method, organics in water can be sufficiently oxidized into inorganic carbon; and the content of organic carbon can be deduced through testing the content of inorganic carbon. Therefore, measuring accuracy of organic carbon content in water is improved.

A method for predicting the total organic carbon (TOC) content of shale comprises the following steps: subjecting a shale sample to a physical test and analysis to obtain the rock parameters of the shale sample; based on the rock parameters, obtaining first mathematic relationship between TOC of the shale sample and each well logging parameter of multiple well logging parameters; carrying out well logging analysis, based on the results of the well logging analysis, obtaining second mathematic relationship between TOC and each well logging parameter; aiming at each well logging parameter, judging the consistency between the first mathematic relationship and the second mathematic relationship; aiming at each well logging parameter, when the first mathematic relationship and the second mathematic relationship are consistent, based on the first mathematic relationship or the second mathematic relationship, calculating the similarity between TOC and the well logging parameter; choosing the well logging parameter having the maximal similarity as the prediction parameter; and based on the value of the prediction parameter, and the first mathematic relationship and the second mathematic relationship between TOC and the prediction parameter, predicting the TOC of the shale sample.

A method for collecting combustion gases by (a) contacting a liquid phase with a gas flow containing said gases, where the liquid phase contains carbonate / bicarbonate buffer salts in a ratio of around 2:1, with a total inorganic carbon concentration no higher than 25 g / L and pH values between 8 and 12; and (b) recovering the CO2-rich liquid phase produced in step (a).

Methods are provided for utilizing the results of compositional modeling analysis to obtain accurate total organic carbon values without the need for an oxidation step or lengthy sample preparation, and also to calculate the organic carbon value attributable to contaminants, such as drilling additives.

The present invention aims to provide a device for reducing concentration of total organic carbon in boric acid solution. The device can reduce the concentration of total organic carbon (TOC) in cooling water containing boric acid in a nuclear reactor primary loop system by using UV radiation. The device comprises a liquid storage tank of input solution (containing total organic carbon and boric acid solution) and a pump, wherein the pump is used for pumping solution from the liquid storage tank to a UV lamp. A connecting pipe is arranged on a pipeline in front of the UV lamp for adding of a free radical reaction initiator, and the initiator is pumped by a metering pump. Mixed solution of the initiator and the boric acid solution flows into the UV lamp, and complicated organic matter is decomposed into simple matters in the UV lamp. After that, the solution flows into a activated carbon adsorption bed, so as to reduce the excess free radical reaction initiator. The solution in which the excess free radical reaction initiator is removed flows into an air discharge duct, so as to form oxygen and discharge carbon dioxide. Then the solution is pumped to a mixed bed column for thorough purification by a pump, and resin in the mixed bed column comprises a strong acidic cation exchanger and a strong base anion exchanger.

The invention discloses a method for improving growth of seedlings of hizikia fusiformis. The method comprises steps as follows: seawater is added to a nursery pond of juvenile sporophyte of the hizikia fusiformis, the total alkalinity, the pH value, the salinity, the temperature and the nutrient substance concentration of the seawater are tested, and the concentration of TIC (total inorganic carbon) is calculated; a sodium bicarbonate solution is added to the culture pond, the concentration of TIC in the seawater is calculated again, and whether sodium bicarbonate is required to be continuously added is observed. Used sodium bicarbonate is low in cost, safe and easy to obtain, and large-scale agricultural production is easy to implement; sodium bicarbonate is added to change the composition of a carbonate system of the culture seawater, the concentration of TIC in the culture seawater is increased, the method is simple and convenient to operate, the growth speed of the seedlings of hizikia fusiformis is safely and effectively increased, time is saved for follow-up cultivation of the hizikia fusiformis, and output of the hizikia fusiformis is favorably increased. The provided method for improving growth of the seedlings is higher in implementation and has certain practical significance in the large-scale hizikia fusiformis culture industry of offshore areas in China.