75 results about "Boiling point" patented technology

The invention discloses a hydrocarbon fuel boiling point and quasi-critical parameter measurement and phase diagram drawing method. The method comprises the following steps: conveying a target substance to a calorimetric tube and heating the target substance to a target temperature; relevant parameters are monitored in real time; according to the parameters monitored in real time, the boiling point of the target substance is obtained based on heat transfer characteristics in the fluid phase change process; on the basis of an energy transfer model between the calorimetric tube and the fuel, a function of a target substance heat sink changing along with the temperature is obtained online; after the heat measuring pipe is cooled to the room temperature, the pressure is adjusted, and the steps continue to be executed to obtain functions of the boiling point of the target substance and the heat sink of the target substance changing along with the temperature under different pressures; based on a quasi-critical parameter measurement method, quasi-critical parameters of a target substance are obtained, and a P-T phase diagram of the target substance is drawn. The invention further discloses a device for hydrocarbon fuel boiling point and quasi-critical parameter measurement and phase diagram drawing. According to the method and the device, accurate measurement of the boiling point and the quasi-critical parameters and accurate drawing of the phase diagram can be realized.

The embodiment of the invention provides an evaporation system control method and an evaporation system, and relates to the technical field of control, the method is applied to a control system in an MVR evaporation system.The method comprises the steps that in response to a starting instruction, a feeding system is controlled to pump to-be-treated liquid into an evaporation crystallization system, and the real-time boiling point rise of the evaporation crystallization system is monitored; and determining to adopt an optimal recovery rate control mode or a boiling point rise control mode as a target control mode based on the real-time boiling point rise, and controlling the feeding system, the evaporative crystallization system and the water production system to treat the to-be-treated liquid according to a preset strategy corresponding to the target control mode, the frequency of the distilled water and the flow of the to-be-treated liquid pumped by the feeding system meet the corresponding recovery rate, so that the control intelligence and reliability of the MVR evaporation system are improved.

The invention discloses an oil gas treatment method and system based on pressure triggering and temperature feedback control, a medium and a product, and relates to the field of oil gas treatment. The method comprises the following steps: when a pressure value and an actual temperature of an oil tank meet trigger conditions, guiding oil gas in the oil tank into a condensation unit for condensation, liquefying preset high-boiling-point components in the oil gas into a liquid oil product, and adsorbing the condensed residual oil gas through a double-layer adsorption bed arranged in an adsorption tank in sequence; according to the temperature of the adsorption bed and the tail gas emission concentration, the saturation index is calculated through a composite saturation judgment algorithm, when adsorption is saturated, the vacuum pump is started to conduct vacuum desorption on the adsorption tank, oil gas adsorbed on the double-layer adsorption bed is desorbed, and the desorbed oil gas is circularly sent back to an inlet of the condensation unit to be subjected to secondary condensation liquefaction recovery. By implementing the technical scheme, oil gas can be effectively treated, and the oil gas recovery efficiency is improved.

The invention provides a method for detecting the content of a high-boiling-point solvent in water at the top of a rectifying tower, which comprises the following steps: when the content of the high-boiling-point solvent in the water at the top of the rectifying tower is detected to be greater than a first preset threshold value, obtaining the temperature at the top of the rectifying tower; if the tower top temperature is higher than a second preset threshold value, acquiring a plurality of rectification parameters; judging whether the plurality of rectification parameters are all located in a plurality of corresponding preset ranges or not; if yes, a plurality of feeding parameters are obtained; judging that at least one feeding parameter exceeds a corresponding preset range; determining a target regulation and control scheme according to a preset reason query list and the at least one feeding parameter; if not, determining at least one abnormal rectification parameter, and determining a target regulation and control scheme according to the reason query list and the at least one rectification parameter; and executing the target regulation and control scheme. According to the invention, the content of the high-boiling-point solvent in the water at the top of the rectifying tower can be accurately and flexibly controlled.

The invention discloses a petroleum product high-boiling-point high-vacuum distillation distillation range full-automatic measuring system, which is characterized by comprising a main control unit, and the main control unit comprises a signal detection and control device for performing signal detection and signal control on signals fed back by other units; the signal detection and control device is controlled by a man-machine interaction control device; the distillation chamber unit comprises a detected distillation temperature detection device, a distillation chamber heat preservation device, a distillation chamber heating control device and a distillation chamber heat dissipation device; the condensing unit is used for condensing wax-oil-containing steam in the distillation process and naturally cooling non-wax-oil-containing steam, so that liquid drops obtained by condensing oil-containing steam enter the receiving unit; the receiving unit comprises a liquid level detection device, a liquid level tracking device, a receiving room temperature control device, an initial boiling point detection device and a flow guide device; the vacuum degree control unit comprises a vacuum degree detection device and a vacuum degree control device. According to the device disclosed by the invention, the process detection and control of a distillation experiment of a petroleum product under high vacuum can be more intelligent and safer.

The invention discloses a detection method for an ODS detection system, which comprises the following steps: S1, sample introduction trapping: a first cold trap is at a first temperature, and the first cold trap traps all ODS in a sample gas; s2, first desorption: the second cold trap is at a second temperature, the first cold trap is heated to a third temperature, ODS with the boiling point smaller than or equal to the boiling point of CO2 in the first cold trap is desorbed out, CO2 adsorption is conducted through a CO2 adsorption pipe, and the ODS desorbed out of the first cold trap after adsorption through the CO2 adsorption pipe is focused through the second cold trap; s3, secondary analysis: heating the first cold trap to a fourth temperature, analyzing the remaining ODS in the first cold trap, and focusing the remaining ODS in the first cold trap by the second cold trap; and S4, injection: heating the second cold trap to a fifth temperature, analyzing all ODS in the second cold trap, and injecting the ODS into the GCMS detection device. The method has the advantages of high test precision and high test accuracy.

The invention discloses a material modification method and a material modification device, and relates to the technical field of material modification.The material modification method comprises the following steps that S1, a to-be-modified material is added into a reaction chamber; s2, adjusting or maintaining the pressure in the reaction chamber at a set pressure, and adjusting and maintaining the temperature in the reaction chamber within a set temperature range; s3, adding a modifier into the reaction chamber; s4, stirring the to-be-modified material and the modifier in the reaction chamber; the lowest temperature in the set temperature range is higher than the melting point of the modifier under the set pressure and lower than the boiling point of the modifier under the set pressure; after the to-be-modified material is added into the reaction chamber and before the modifier is added, the pressure of the reaction chamber is greater than the saturated vapor pressure of the modifier after the to-be-modified material is added, so that the modifier cannot be vaporized after being added into the reaction chamber, and the absorptivity of the to-be-modified material to the modifier is improved.

A system and method for distillation testing of a liquid sample at atmospheric pressure for the improved prediction of the heating necessary to reach the initial boiling point (IBP) and ensure the IBP is observed within certain time constraints, and regardless of sample composition. This monitors the sample by the camera during different heating phases of the test to obtain visual images of the sample and a computer analyzes image data observed to regulate the optimal distillation process.

A method for producing bio-oil from lignin, comprising the following steps: (a) extracting lignin into oligomers for 30 to 90 minutes, preferably 40 to 70 minutes, in the presence of at least one alcohol having 1 to 5 carbon atoms, preferably 1 to 2 carbon atoms, at the boiling point temperature of said alcohol, or, in the case of a mixture of alcohols, at the temperature of a higher boiling point alcohol, thereby obtaining a liquid phase comprising oligomers and at least one alcohol, and a solid phase comprising lignin substantially free of said oligomers; (b) operating under supercritical conditions in the presence of at least one alcohol having 1 to 5 carbon atoms, preferably 1 to 2 carbon atoms, at a temperature of 200°C to 300°C, preferably 220°C to 295°C, and at 40 bar to 170 bar, preferably 50 bar to 150 bar. Under bar pressure, the solid phase containing lignin substantially free of said oligomers obtained in step (a) is depolymerized for 5 to 150 minutes, preferably 10 to 130 minutes, to obtain: - (i) a gas phase; - (ii) a mixture comprising: an oil phase consisting of bio-oil, a liquid phase containing at least one alcohol, and a solid phase containing carbon residues (“char”), the oil phase consisting of bio-oil, and optionally unconverted lignin; (c) the oil phase consisting of bio-oil is recovered from the mixture (ii) obtained in step (b). The bio-oil obtained by the foregoing method can be advantageously used, for example, as an antioxidant or UV stabilizer, particularly as an antioxidant or UV stabilizer in biofuels, which can be used as is or blended with other fuels in automotive or aviation diesel engines. Furthermore, the bio-25 oil obtained by the foregoing method can be advantageously used as an antioxidant in, for example, vegetable oils and animal or plant fats, as bio-feedback materials to slow their rancidity during transport and storage.

A method and system for controlling a tank containing a low flashpoint fuel, such as methanol, for powering a vessel is disclosed. The method comprises measuring the temperature of the tank's content and determining whether this temperature exceeds a first threshold temperature, which is below the boiling point of the content. The method further comprises ingressing water into the tank if the measured temperature exceeds the first threshold temperature. The system includes a tank, sensors for measuring temperature, conduits for ingressing water into the tank, valves for controlling the ingress of water, and a computer readable medium for performing the method. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.

The components of salt from the granules can be efficiently extracted through evaporation. During the treatment of the granules, temperatures can be allowed to approach or exceed the boiling point of one or more of the salt components, preferably in an oxidizing medium. The temperature can be maintained high enough so that the salt content exerts an appreciable vapor pressure and can be sustained for a sufficient time to allow most, all, or substantially all of the salt content to evaporate and be carried away from the furnace in the combustion gases. The evaporated salt can then be condensed and collected.

The present invention discloses a processing method for producing chemical raw materials from crude oil. The method includes: after the crude oil is desalted by electricity, it enters a flash tower to separate out the light naphtha fraction, and then enters an atmospheric tower to separate out the atmospheric tower top oil and atmospheric residue; the atmospheric residue enters a vacuum tower to separate out the vacuum tower top oil and vacuum residue; wherein, the initial boiling point of the atmospheric tower top oil is 50°C to 80°C, and the final boiling point is 300°C to 400°C; the initial boiling point of the vacuum tower top oil is 300 to 360°C, and the final boiling point is 460°C to 520°C; in the presence of hydrogen, the atmospheric tower top oil and the vacuum tower top oil are mixed and sequentially enter a first hydrocracking reaction zone and a second hydrocracking reaction zone for hydrocracking reactions; finally, gas fraction, light naphtha, heavy naphtha and tail oil are obtained through separation and fractionation. This method can greatly improve the quality and yield of chemical products.

The invention is a process for producing a white oil having an initial boiling point of at least 300° C., the process comprising a step of catalytically hydrogenating a hydrocarbon feedstock at a temperature of from 80 to 190° C., at a pressure of from 50 to 160 bars, a liquid hourly space velocity of 0.2 to 5 hr−1 and an hydrogen treat rate up to 200 Nm3 / ton of feed, the hydrocarbon feedstock having a sulphur content of less than 10 ppm by weight, an initial boiling point within the range from 150 to 350° C. and a final boiling point within the range from 350 to 550° C.

A kind of rectifying column for separating C17-C20 rare and precious metal high-efficiency extractant, a plurality of trays A and trays B are arranged in the interior of tower body according to longitudinal interval staggered, each adjacent tray A and tray B are arranged according to left-right symmetry, and each valve hole is provided with a float valve assembly for gas-liquid exchange;By setting the float valve assembly, the gas phase thrust pushes the valve cap to rise, the gas guide cone tip is designed as an inverted cone, which not only can guide and disperse the rising gas phase, avoid the gas phase to concentrate locally in the tray, but also make the gas phase uniformly contact with the liquid phase on the tray, increase the gas-liquid contact area, improve the mass transfer efficiency, facilitate the fine separation of C17-C20 components with close boiling points, the valve cap opening degree dynamically changes with the gas phase flow, the rising gas phase fully contacts with the liquid phase remaining on the tray after passing through the valve cap, the low-boiling-point component is enriched in the gas phase, and the high-boiling-point component is transferred to the liquid phase, to realize the preliminary separation of components.

A process for removing 1, 2-pentanediol from a mixture rich in ethylene glycol, said process comprising an extractive distillation in which an entrainer having a Hansen solubility parameter [delta] H of between 5 and 15 is used, and said entrainer has a boiling point at atmospheric pressure of at least 200 DEG C.

Pneumatically supported towers for low gravity applications are disclosed herein. In one aspect, an inflatable tower for use in vacuum environments can have a membrane configured to support a load when inflated with an inflation gas to a pressures less than 100,000 pascals and greater than 0.01 pascal. The inflation gas can be chosen to have a sufficiently low boiling temperature at the inflation pressure of the membrane that the gas will not condense to a liquid or solid within a defined range of temperatures in which the tower is designed to operate. The membrane can be configured to be packaged for transport in deflated condition and rolled onto cylinders from which the membrane can be later unfurled and inflated as part of the tower inflation process.

A device for separating fluid species is disclosed. The device comprises at least one header connected to a monoblock. The header uses a transition element to transition one or more fluid streams between a bulk flow and a multi-channel flow pattern. The header is mounted on a monoblock and modifies the raw process fluid stream by adjusting the temperature of the raw process fluid stream and / or separating at least a portion of one or more fluid species from it. Fluid separation is achieved by using a high-boiling-point liquid injected into the pore structure of the monoblock, the output of which is a modified process fluid stream and a discharge fluid stream. A method for manufacturing the device and a method for separating at least a portion of fluid species from a process fluid stream using the device are also disclosed.

The invention discloses a device and a method capable of realizing liquid boiling point measurement under different pressures in a closed environment, solves the problem that liquid boiling point measurement is mostly carried out in an open environment in the prior art, and has the beneficial effect of improving the accuracy of liquid boiling point measurement. According to the specific scheme, the device capable of measuring the boiling points of the liquid under the different pressures in the closed environment comprises a reaction container, the reaction container is provided with a sample injection pipe, a locking assembly is arranged at the sample injection pipe to seal the sample injection pipe, the locking assembly is provided with an open hole, and a breather pipe is arranged at the top of the reaction container; the breather pipe is annularly provided with a condenser pipe so as to introduce cooling liquid to cool steam in the breather pipe; the inflation pipe is mounted at the top end of the breather pipe, inert gas can enter the reaction container through the inflation pipe and the breather pipe, and an air pressure sensor is arranged at the inflation pipe; a detection head of the temperature sensor can penetrate through the sample injection pipe to enter the reaction container, and a detection line of the temperature sensor penetrates through the hole of the locking assembly; and a housing.

To provide a method capable of easily estimating a position of a deepest part of a mineral vein in a short period.SOLUTION: A depth estimation method of a hydrothermal vein such as a hydrothermal vein-type gold deposit, includes the steps of: measuring a temperature of each of a plurality of fluid inclusions contained in quartz collected from different depths of a target vein under prescribed conditions, for example, by microthermometry to calculate a temperature and a salt concentration of hydrothermal water when the hydrothermal water is incorporated into the quartz; calculating a boiling curve representing a relation between a boiling point and a depth of the hydrothermal water having the salt concentration; and estimating a position of a deepest part of the target vein by collating the boiling curve with a relation curve between the temperature and the depth of the hydrothermal water using an ancient groundwater surface as a reference, under geological conditions including the target vein.SELECTED DRAWING: Figure 1

The invention provides a boiling point measuring method and device and a water purifier. The boiling point measuring method comprises the steps that the current first temperature of liquid to be measured in a liquid storage tank is obtained; the heating module is controlled to heat the to-be-measured liquid at the first power, first temperature information is recorded, and the first temperature information is the temperature information of heating the to-be-measured liquid at the first power; under the condition that the first temperature information meets a set conversion condition, the heating module is controlled to be converted into second power from the first power to heat the to-be-detected liquid, and the second power is smaller than the first power; the current boiling point of the liquid to be measured is measured according to second temperature information, and the second temperature information is temperature information for heating the liquid to be measured at the second power. The current actual boiling point is measured based on the temperature condition in the actual heating process, the device is suitable for being used in different areas, and energy waste is avoided under the condition that it is guaranteed that liquid to be measured is boiled.

A method for calibrating a low-temperature medium density sensor, step 1, selecting experimental reference low-temperature liquid media A0, A2 according to the medium to be measured A1, the upper limit temperature Tmax, and the lower limit temperature Tmin in use; step 2, measuring the capacitance C0 of the sensor immersed in A0 under approximately standard atmospheric pressure, and the relative dielectric constant ε of A0 under this condition is known A0 ; Step 3: Under approximately standard atmospheric pressure, measure the capacitance C2 of the sensor immersed in A2. The relative dielectric constant ε of A2 under this condition is known. A2 ; Step 4. Substitute C0 and C2 into the formula C=K×ε+Cs to obtain the sensor structure coefficients K and Cs; Step 5. Under approximately standard atmospheric pressure, measure the capacitance C1 of the sensor immersed in A1. Under this condition, the relative dielectric constant ε of A1 is known. A1 ; Step 6: Based on K, Cs, calculate the measured ε′ A1 , and the known ε A1 The present invention uses the liquid phase boiling point temperature with good reproducibility under normal atmospheric pressure as the calibration condition, and can complete the calibration under laboratory conditions, and has the advantages of simplified operation, high efficiency, reliable calibration, etc., and has good application effect.

The present invention relates to a process for recovering propylene from a gaseous stream comprising propylene and a light-boiling compound, the light-boiling compound having a boiling point at 1013 mbar (abs.) below −50° C., in a condensing unit, wherein the condensing unit has a first zone, preferably being a condensing zone, and a second zone, preferably being an evaporation zone, wherein first and second zone are spatially separated from each other but are thermally conductive coupled to each other, the process comprising(i) providing a gaseous stream comprising propylene and a light-boiling compound;(ii) providing a liquid cooling medium stream having a temperature T1;(iii) cooling the liquid cooling medium stream in two or more cooling steps to a temperature T4, which is lower than the temperature T1, thereby obtaining a liquid cooling medium stream having temperature T4;(iv) feeding the gaseous stream comprising propylene and a light-boiling compound from (i) into the first zone of the condensing unit and feeding the liquid cooling medium stream having the temperature T4 obtained from (iii) to the second zone of the condensing unit;(v) expanding the liquid cooling medium stream, preferably adiabatically, within the second zone, thereby obtaining from the first zone an at least partially liquid stream comprising propylene, which is depleted in light-boiling compounds compared to the stream provided in (i).

The invention is a process for producing a white oil having an initial boiling point of at least 250° C., the process comprising a step of catalytically hydrogenating a base oil feedstock at a temperature of from 120 to 210° C., at a pressure of from 30 to 160 bars and a liquid hourly space velocity of 0.2 to 5 hr−1, the base oil feedstock comprising less than 5 ppm by weight of sulphur.

The utility model relates to the technical field of water tanks, in particular to a water tank structure capable of automatically judging water temperatures with different boiling points. Comprising a water tank, a heating pipe and a vibration detection piece, the heating pipe is fixedly connected with the water tank, and the vibration detection piece is arranged on the outer side wall of the water tank; a vibration detection piece is adopted to detect the vibration frequency and inclination amplitude of a water tank, a large number of bubbles generated by boiling of water in the water tank cause violent shaking in the water tank space, and after the vibration detection piece detects that the water tank shakes and water tank inclination caused by shaking reaches a certain numerical value, it is judged that the water in the water tank is boiled, and heating is stopped at the same time; taking the temperature as a boiling point; comparing the recorded new boiling point with the original boiling point data, calculating to generate a series of new temperature values, and mapping the new temperature values to the current temperature values and the set temperature parameters; by means of the mode, the boiling condition is detected so that the boiling point data can be mapped subsequently, and by means of the mode, the boiling condition is detected so that the boiling point data can be mapped subsequently.

The invention relates to a method and device for dynamically adjusting the pressure intensity of an actual boiling point distillation instrument device, and the method comprises the following steps: fitting a linear equation according to a plurality of historical pressure intensity values and a plurality of historical toluene boiling point values corresponding to the historical pressure intensity values by adopting a least square method to obtain the linear equation; substituting at least part of the historical pressure values in all the historical pressure values into a linear square; constructing an input sequence by using the plurality of fitted toluene boiling point values, performing causal convolution processing on the input sequence to obtain a causal convolution value at a prediction moment t, and taking the causal convolution value at the prediction moment t as a y value of a linear equation to calculate a pressure value corresponding to the causal convolution value at the prediction moment t; and when the prediction time t is reached, if the pressure intensity value corresponding to the causal convolution value at the prediction time t is determined to be out of the toluene boiling point standard range, adjusting the pressure intensity of the true boiling point distillation instrument device to the pressure intensity value corresponding to the causal convolution value at the prediction time t, thereby solving the technical problem of hysteresis caused by manual adjustment.

To provide a method for cleaning an object to be cleaned, which does not require a large amount of cleaning solvent even when removing a large amount of oil, is considerate of safety and the global environment, and can keep cleaning costs low. [Solution] The method includes a heating step in which the object to be cleaned (14) is heated to 100°C or higher by immersing the object in heated oil (4) at 100°C or higher; a peeling step in which the object to be cleaned (14) is brought into contact with heated water (6) to perform peeling and cleaning, which physically peels off dirt adhering to the object to be cleaned (14) by the pressure of the generated steam; a solvent liquid cleaning step in which the object to be cleaned (14) is brought into contact with a cleaning solvent (13) having a boiling point lower than the temperature of the object to be cleaned (14) after the peeling and cleaning, thereby removing any oil remaining on the object to be cleaned (14); and a drying step in which the temperature of the object to be cleaned (14) is maintained higher than the boiling point of the cleaning solvent (13), and the cleaning solvent (13) adhering to the object to be cleaned (14) is evaporated by the heat of the object to be cleaned (14).

A virtual material that is a solid in all temperature regions is assumed, and the temperature in the vicinity of a pulse laser irradiation point is derived by using a heat conduction equation for a solid. A temperature that is increased from an initial temperature Tini preceding laser irradiation by a temperature derived by dividing the energy per unit mass necessary to vaporize a substance by the heat capacity per unit mass of the substance in a solid state is regarded as a virtual boiling point Tb. From a time t1 at which the temperature on a surface of the substance reaches Tb to a first pulse end time t1', the energy Eabsorption per unit area absorbed from the laser by the substance and the energy Erequired per unit area necessary to vaporize the substance from a surface z=0 to z=L1 are regarded as being equal. The thickness L1 by which the substance is removed by the first pulse is estimated.

A test device for atmospheric distillation for the distillation analysis of a liquid sample at atmospheric pressure for improving the prediction of the heating necessary to reach the initial boiling point (IBP) and ensuring that the IBP is observed within certain time constraints irrespective of the sample composition. The sample is monitored by a camera during different heating phases of the test to obtain visual images of the sample, and a computer analyzes the observed image data to adjust the optimal distillation process.

The application discloses a method for measuring boiling point and pseudo-critical parameter of hydrocarbon fuel and drawing phase diagram, which comprises the following steps: delivering target substance to a calorimeter and heating to a target temperature; monitoring related parameters in real time; obtaining the boiling point of the target substance based on heat transfer characteristics in the fluid phase change process according to the real-time monitored parameters; obtaining the function of the heat sink of the target substance changing with temperature based on the energy transfer model between the calorimeter and the fuel; after the calorimeter is cooled to room temperature, adjusting the pressure, and continuing to perform the above steps to obtain the boiling point of the target substance and the function of the heat sink of the target substance changing with temperature under different pressures; obtaining the pseudo-critical parameter of the target substance and drawing the P-T phase diagram of the target substance based on the pseudo-critical parameter measurement method. The application further discloses a device for measuring boiling point and pseudo-critical parameter of hydrocarbon fuel and drawing phase diagram. The method and the device can realize accurate measurement of the boiling point and the pseudo-critical parameter and accurate drawing of the phase diagram.

A production method for hydrogen according to the present invention includes a step for electrolyzing an electrolytic solution that has been heated to a temperature between a lower limit temperature that is at least 100°C and at least the melting point and an upper limit temperature that is less than the boiling point, the electrolytic solution being composed of sodium hydroxide, potassium hydroxide, and water and satisfying expressions (1)–(3).　(1) 4≤x≤14. (2) 51≤y≤71. (3) 15≤z≤45.