WO2021052097A1 - 一种液体混合燃油氧化特征参数的测量系统及方法 - Google Patents

一种液体混合燃油氧化特征参数的测量系统及方法 Download PDF

Info

Publication number
WO2021052097A1
WO2021052097A1 PCT/CN2020/110209 CN2020110209W WO2021052097A1 WO 2021052097 A1 WO2021052097 A1 WO 2021052097A1 CN 2020110209 W CN2020110209 W CN 2020110209W WO 2021052097 A1 WO2021052097 A1 WO 2021052097A1
Authority
WO
WIPO (PCT)
Prior art keywords
furnace
fuel
gas
sample
temperature
Prior art date
Application number
PCT/CN2020/110209
Other languages
English (en)
French (fr)
Inventor
刘军恒
嵇乾
孙平
王乐健
Original Assignee
江苏大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏大学 filed Critical 江苏大学
Publication of WO2021052097A1 publication Critical patent/WO2021052097A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder

Definitions

  • the invention relates to a liquid fuel heating analysis device, in particular to a measurement system and method for the oxidation characteristic parameters of liquid mixed fuel.
  • thermogravimetric analysis method is to control the heating temperature by programmed heating in different atmospheres to test the relationship between the quality of the sample and the temperature. It is widely used in the fields of physics, chemical industry, materials, fuel oil, textiles, etc., and can realize component analysis and substance Identification, measurement of thermal parameters and kinetic parameters.
  • thermogravimetric analysis the thermogravimetric curve (TG) and the derivative thermogravimetric curve (DTG) are obtained, and the Coats-Redfern integration method is used to calculate the pre-exponential factor A and activation energy E of the liquid mixed fuel, which is a new clean and efficient alternative fuel for internal combustion engines.
  • the promotion and application of this product has a great role in promoting.
  • the purpose of the invention is to use the thermogravimetric analysis method and the Coats-Redfern integration method to couple to realize the measurement of the oxidation characteristic parameters of the liquid mixed fuel, and to solve the cumbersome operation of the traditional fuel physical and chemical characteristic characterization method and the high cost.
  • the technical scheme for realizing the present invention is as follows:
  • the mixed fuel is pumped into the sampling pipeline through a quantitative pump, and then added to the sample pan.
  • the temperature control system heats the sample programmatically, and the quality monitoring system monitors and records the quality changes.
  • the experiment is over , Obtain the TG curve and DTG curve from the recording system, and use the Coats-Redfern integration method to calculate the pre-exponential factor A and activation energy E.
  • a measurement system for the oxidation characteristic parameters of liquid mixed fuel oil including fuel mixing system, heating furnace, temperature control system, gas control system and quality monitoring system;
  • the fuel mixing system mixes the fuel and transports it to the heating furnace for heating and combustion through a pipeline.
  • the temperature control system is used to control the temperature in the heating furnace
  • the gas control system is used to provide protective gas and reactant gas
  • the quality inspection system is used to control the temperature in the heating furnace.
  • the fuel mixing system includes an ultrasonic oscillating mixer and a quantitative pump; the ultrasonic oscillating mixer inputs the mixed fuel into the quantitative pump through a pipeline;
  • the heating furnace includes a furnace tube, a furnace base, a furnace body, a furnace body flange, a gas outlet, a gas outlet valve, a cooling water jacket, and a lofting pipeline;
  • One end of the furnace tube is provided with a gas outlet, and the gas outlet is controlled to open and close through a gas outlet valve.
  • the other end of the furnace tube is set on the furnace body flange.
  • the furnace body and the furnace body flange form a closed space, and the furnace tube is placed In the enclosed space; the furnace body is provided with a cooling water jacket;
  • An electric heating wire is arranged in the furnace tube, one end of the lofting pipe is connected with a quantitative pump, and the other end extends into the furnace tube;
  • the gas control system includes a protective gas inlet pipe and a reaction gas inlet pipe; the gas inlet pipe and the reaction gas inlet pipe extend into the furnace tube;
  • the quality detection system includes an electronic balance, a sample pan, a differential transformer and a recording system; the sample pan is arranged on the electronic balance, the differential transformer is connected to the electronic balance, and the recording system can record the quality change of the sample.
  • the protective gas inlet pipe and the reaction gas inlet pipe extend into the furnace tube at different lengths, and the reaction gas inlet pipe is placed at a position obliquely above the sample tray.
  • the gas control system further includes a protective gas cylinder and a reaction gas cylinder, a mass flow meter, and a flow controller; the protective gas cylinder is used to provide the protective gas, and the reaction gas cylinder is used to provide the reaction gas, The mass flow meter is used to record the gas flow of the shielding gas cylinder and the reaction gas cylinder into the shielding gas inlet pipe and the reaction gas inlet pipe, and the flow controller is used to control the mass flow meter.
  • the cooling water jacket is provided with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid enters through the cooling liquid inlet and flows out from the cooling liquid outlet.
  • the temperature control system includes a sample thermocouple, a furnace temperature thermocouple and a program temperature controller; the furnace temperature thermocouple is arranged inside the furnace body to detect the temperature in the furnace body, and the sample thermocouple is placed The sample pan is used to detect the temperature of the sample.
  • the program temperature controller is connected with the electric heating wire, and the program temperature controller controls the isothermal or non-isothermal heating of the electric heating wire.
  • the furnace body flange is arranged on the furnace base, a circular hole is opened in the central position of the furnace body flange, an inner sealing baffle and an outer sealing baffle are arranged in the circular hole, and the inner sealing baffle and the outer sealing baffle are arranged in the circular hole.
  • a sealing ring is arranged between the baffles, the protective gas inlet pipe and the reaction gas inlet pipe pass through the inner sealing baffle and the outer sealing baffle into the furnace tube, and the gas outlet of the protective gas inlet pipe is close to the inner sealing baffle.
  • program temperature controller is also used to control the temperature of the coolant in the cooling water jacket, so as to control the temperature of the furnace body.
  • Step 1 Fuel A and Fuel B are oscillated and mixed in an ultrasonic vibration mixer to ensure that the fuel is fully mixed;
  • Step 2 The mixed fuel is pumped into the sampling pipeline by a quantitative pump, and then added to the sample pan inside the furnace tube.
  • the temperature control system controls the electric heating wire to heat according to the set temperature, and the quality monitoring system monitors the sample quality change and gas control The system enables the sample to be pyrolyzed in a specific atmosphere, and the exhaust gas is removed in time;
  • Step 3 Output TG curve and DTG curve from the recording system
  • Step four use the TG curve and DTG curve combined with the Coats-Redfern integration method to calculate the oxidation characteristic parameters of the mixed fuel.
  • the method and system for measuring the oxidation characteristic parameters of liquid mixed fuel provided by the present invention can analyze the oxidation characteristics of liquid mixed fuel at a specific heating rate in a specific atmosphere.
  • the Coats-Redfern integral method can be used simply and quickly. Calculate the pre-exponential factor A and activation energy E of the mixed fuel.
  • the present invention improves the measurement accuracy of the electronic balance, designs temperature compensation and carrier gas correction, and reduces the problem of the shaking of the electronic balance caused by gas flow.
  • the sampling pipeline designed in the present invention solves the shortcomings of cumbersome sampling and easy damage to the sample plate in the traditional oxidation characteristic parameter measurement process, simplifies the test process, and reduces the difficulty of operation.
  • the gas outlet and gas outlet valve designed in the present invention can realize the collection of fuel oxidation products, and other gas analysis instruments (such as infrared spectrometer) can be connected after the gas outlet to further analyze the oxidation products of fuel.
  • gas analysis instruments such as infrared spectrometer
  • Figure 1 is a flow chart of the overall operation of the present invention.
  • Figure 2 is a schematic diagram of the overall structure of the heating furnace of the present invention.
  • Figure 3 is a left view of the furnace body flange of the present invention.
  • Figure 4 is a flow chart of the control system of the present invention.
  • Figure 5 is the TG curve and DTG curve of the PODE/diesel mixed fuel obtained from the recording system.
  • Figure 6 is the thermal characteristic curve of PODE/diesel mixed fuel calculated by the Coats-Redfern method.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • “plurality” means two or more than two, unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • installed can be a fixed connection or a detachable connection.
  • integrally connected it can be a mechanical connection or an electrical connection
  • it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
  • a measurement system for the oxidation characteristic parameters of liquid mixed fuel oil including fuel mixing system, heating furnace, temperature control system, gas control system and quality monitoring system;
  • the fuel mixing system mixes the fuel and transports it to the heating furnace for heating and combustion through a pipeline.
  • the temperature control system is used to control the temperature in the heating furnace
  • the gas control system is used to provide protective gas and reactant gas
  • the quality detection system is used To detect the fuel combustion in the heating furnace;
  • the fuel mixing system includes an ultrasonic oscillating mixer 28 and a quantitative pump 29; the ultrasonic oscillating mixer 28 inputs the mixed fuel into the quantitative pump 29 through a pipeline;
  • the heating furnace includes a furnace tube 7, a furnace base 10, a furnace body 21, a furnace body flange 6, a gas outlet 26, a gas outlet valve 27, a cooling water jacket 24, and a lofting pipe 30;
  • One end of the furnace tube 7 is provided with a gas outlet 26, and the gas outlet 26 is controlled to open and close by a gas outlet valve 27.
  • the other end of the furnace tube 7 is set on the furnace body flange 6, and the furnace body 21 and the furnace body flange 6 are formed A closed space in which the furnace tube 7 is placed; the furnace body 21 is provided with a cooling water jacket 24;
  • the furnace tube 7 is provided with an electric heating wire 17, one end of the setting out pipe 30 is connected with the quantitative pump 29, and the other end extends into the furnace tube 7;
  • the gas control system includes a protective gas inlet pipe 8 and a reactive gas inlet pipe 9; the protective gas inlet pipe 8 and the reactive gas inlet pipe 9 extend into the furnace tube 7;
  • the quality inspection system includes an electronic balance 13, a sample pan 25, a differential transformer 11, and a recording system 12; the sample pan 25 is set on the electronic balance 13, the differential transformer 11 is connected to the electronic balance 13, and the recording system 12 Can record changes in sample quality.
  • the protective gas inlet pipe 8 and the reaction gas inlet pipe 9 extend into the furnace tube 7 in different lengths, and the reaction gas inlet pipe 9 is placed at a position obliquely above the sample tray 25.
  • the gas control system also includes a protective gas cylinder and a reaction gas cylinder 1, a mass flow meter 3, and a flow controller 5; the protective gas cylinder is used to provide protective gas, and the reaction gas cylinder is used to provide reactant gas.
  • the mass flow meter 3 is used to record the gas flow of the shielding gas cylinder and the reaction gas cylinder 1 into the shielding gas inlet pipe 8 and the reaction gas inlet pipe 9, and the flow controller 5 is used to control the mass flow meter 3.
  • the cooling water jacket 24 is provided with a cooling liquid inlet 4 and a cooling liquid outlet 18.
  • the cooling liquid enters through the cooling liquid inlet 4 and flows out from the cooling liquid outlet 18.
  • the temperature control system includes a sample thermocouple 23, a furnace temperature thermocouple 22 and a program temperature controller 20; the furnace temperature thermocouple 23 is arranged inside the furnace body 21 to detect the temperature in the furnace body 21, and the sample The thermocouple 22 is placed near the sample tray 25 to detect the temperature of the sample.
  • the program temperature controller 20 is connected to the electric heating wire 17, and the program temperature controller 20 controls the isothermal or non-isothermal heating of the electric heating wire 17.
  • the furnace body flange 6 is arranged on the furnace base 10, a circular hole is opened in the center of the furnace body flange 6, and an inner sealing baffle 16 and an outer sealing baffle 14 are arranged in the circular hole, and the inner sealing baffle 16
  • a sealing ring 15 is arranged between the outer sealing baffle 14 and the protective gas inlet pipe 8 and the reaction gas inlet pipe 9 passing through the inner sealing baffle 16 and the outer sealing baffle 14 to enter the furnace tube 7, and the protective gas enters the furnace tube 7
  • the air outlet of the air duct 8 is close to the inner sealing baffle 15.
  • the program temperature controller 20 is also used to control the temperature of the cooling liquid in the cooling water jacket 24 so as to control the temperature of the furnace body 21.
  • the circumference of the electric heating wire 17 is filled with glass fiber.
  • An inner sealing baffle 16, a sealing ring 15, and an outer sealing baffle 14 are provided in the furnace body flange 6; a differential transformer 11 is provided in the furnace base 10;
  • the temperature control system includes an electric heating wire 17, a sample thermocouple 23, a furnace temperature thermocouple 22, a program temperature controller 20, a cooler 19, a coolant inlet 4, a coolant outlet 18, and a cooling water jacket 24.
  • the program temperature controller 20 receives the electric signals of the furnace temperature thermocouple 22 and the sample thermocouple 23, and controls the cooler 19;
  • the inner wall of the furnace tube 7 is equipped with an electric heating wire 17, which can be controlled by the program temperature controller 20 to realize isothermal or non-isothermal heating.
  • the furnace body 21 and the furnace body flange 6 are fixed together by bolts.
  • a cooling water jacket 24 is embedded in the furnace body 21.
  • the cooling liquid cools the furnace body under the control of the program temperature controller 20, and the inner sealing baffle 16
  • An air inlet pipe is arranged in the sealing ring 15.
  • the reaction gas inlet pipe 9 passes the reaction gas into the back of the sample tray 25, and the protective gas inlet pipe 8 passes the protective gas into Inside the furnace tube 7.
  • the end of the electronic balance 13 is connected with the differential transformer 11, and the recording system 12 can record the quality change of the sample.
  • the sample thermocouple 23 is connected to the sample tray 25, and the furnace temperature thermocouple 22 is fixed on the inner wall of the furnace body 21.
  • the program temperature controller 20 changes the current on the electric heating wire 17 and the coolant through the temperature signal monitored by the thermocouple. The flow rate of the sample and the temperature of the furnace can be controlled.
  • Step 1 Fuel A and fuel B are oscillated and mixed in the ultrasonic oscillating mixer 28 to ensure that the fuel is fully mixed;
  • Step 2 The mixed fuel is pumped into the sampling pipe 30 by the quantitative pump 29, and then added to the sample tray 25 inside the furnace tube 7.
  • the temperature control system controls the electric heating wire 17 to heat according to the set temperature, and the quality monitoring system monitors When the quality of the sample changes, the gas control system causes the sample to be pyrolyzed in a specific atmosphere, and the exhaust gas is removed in time;
  • Step 3 Output the TG curve and DTG curve from the recording system 12;
  • Step four use the TG curve and DTG curve combined with the Coats-Redfern integration method to calculate the oxidation characteristic parameters of the mixed fuel.
  • a method and device for measuring the oxidation characteristic parameters of liquid mixed fuel includes a fuel mixing system, a heating furnace, a temperature control system, a gas control system, and a quality monitoring system.
  • the fuel mixing system includes an ultrasonic oscillatory mixer 28 and a quantitative pump 29;
  • the heating furnace includes a furnace tube 7, a furnace base 10, a furnace body 21, a furnace body flange 6, a gas outlet 26, a gas outlet valve 27, a cooling water jacket 24, a lock nut 2, a lofting pipe 30, and a furnace body flange 6
  • a differential transformer 11 is installed in the furnace base 10, and a cooling water jacket 24 is embedded in the furnace body 21;
  • the temperature control system includes an electric heating wire 17, a furnace temperature thermocouple 22, a sample thermocouple 23, a program temperature controller 20, a cooler 19, a coolant inlet 4, a coolant outlet 18, and the cooler 19 is connected to The cooling liquid inlet 4 is connected, and the inner wall of the furnace tube 7 is provided with an electric heating wire 17 to heat the sample;
  • the gas control system includes a reaction gas cylinder and a protective gas cylinder 1, a protective gas inlet pipe 8, a reactive gas inlet pipe 9, a mass flow meter 3, and a flow controller 5;
  • the quality monitoring system includes an electronic balance 13, a sample pan 25, a differential transformer 11, and a recording system 12.
  • the end of the electronic balance 13 is connected to the differential transformer 11.
  • the recording system 12 can record the quality change of the sample and output the TG curve and DTG curve.
  • the electronic balance 13 is connected to the differential transformer 11, and the electrical signals of temperature compensation, carrier gas correction and differential transformer 11 are processed by the amplifier and then transmitted to the digital-to-analog conversion module, and finally processed by the computer;
  • the electrical signal measured by the thermocouple 23 is processed by the deviation amplifier and then connected to the computer.
  • the electrical signal processed by the deviation amplifier is connected to the PID controller.
  • the PID controller controls the program temperature controller 20 according to the temperature rise rate set by the computer to adjust the electrical The power of the heating wire 17 and the operation of the cooler 19;
  • the flow controller 5 controls the opening of the mass flow meter 3 according to the set gas flow rate, and passes the protective gas and the reaction gas into the furnace tube 7.
  • the oxygen in the PODE polymethoxy dimethyl ether molecule plays a role of self-supplying oxygen during the combustion process, which is of great benefit to improving the combustion and emission characteristics of diesel engines. It is new to use PODE as a component to optimize the performance of diesel fuel. Research trends. The following will introduce the test process of the oxidation characteristic parameters of the PODE/diesel mixed fuel in the device of the invention.
  • Step 1 Prepare PODE and diesel fuel in a certain proportion as a mixed fuel.
  • the volume fraction of PODE in the mixed fuel is 0%, 10%, 20%, and 30%, which are denoted as P0, P10, P20, and P30.
  • Step two start the quantitative pump 29, set the sample mass to 4mg, the quantitative pump 29 pumps the fully mixed fuel into the stakeout pipeline 30, and finally puts the 4mg sample into the sample tray 25; after the completion of the stakeout, close the quantitative pump 29.
  • the heating rate is 15°C/min, the heating range is 40 ⁇ 400°C;
  • the reactant gas is N 2 80% + O 2 20%,
  • the reactant gas flow rate is 50 mL/min, and the protective gas is pure N 2
  • the shielding gas flow rate is 50mL/min.
  • the flow controller 5 adjusts the opening degree of the mass flow meter 3 according to the set flow rate, and passes the protective gas and the reaction gas into the furnace tube 7 at a constant flow rate.
  • the electronic balance 13 After the electronic balance 13 is stable, the electronic balance 13 is adjusted to zero, and the carrier gas correction and temperature compensation are performed; the program temperature controller 20 is started, and the sample thermocouple 23 feedbacks the sample temperature to the program temperature controller 20 in real time.
  • the controller 20 adjusts the current in the electric heating wire 17 so that the sample is heated according to the set heating rate; the furnace temperature thermocouple 22 feeds back the temperature of the furnace body 21 to the program temperature controller 20, and the cooler 19 is at the program temperature Under the control of the controller 20, the flow rate of the cooling liquid is automatically adjusted to control the furnace body 21 at a constant temperature.
  • Step 3 The quality monitoring system automatically records the sample quality changes, and obtains the TG curve and the DTG curve from the recording system 12, as shown in Figure 5; after the experiment is over, the gas outlet valve 27 is closed.
  • Step 4 Calculate the pre-exponential factor A and activation energy E according to the TG curve and the DTG curve in combination with the Coats-Redfern integration method.
  • the equation is as follows:
  • Table 1 Regression equation, activation energy and pre-exponential factors of PODE/diesel mixed fuel.
  • the activation energy E and the index factor A of the mixed fuel gradually decrease with the increase of the PODE blending ratio, indicating that the addition of PODE improves the oxidation activity of the fuel, which is beneficial to the occurrence of oxidation reactions and improves the combustion performance of the diesel engine.

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

一种液体混合燃油氧化特征参数的测量系统及方法，测量系统包括燃油混合系统、加热炉、温度控制系统、气体控制系统、质量监测系统，燃油混合系统包括超声波震荡混合器（28）、定量泵（29），加热炉包括炉管（7）、炉体（21）、炉体法兰（6）、气体出口（26）、冷却水套（24）、放样管道（30），温度控制系统包括电加热丝、样品热电偶、炉温热电偶、程序温控仪、冷却器，气体控制系统包括保护气体和反应气体进气管道、质量流量计（3）、流量控制器（5），质量检测系统包括电子天平（13）、样品盘（25）、差动变压器（11）、记录系统（12）。该装置可以测得液体混合燃油的热重曲线(TG)和微商热重曲线(DTG)，并采用Coats-Redfern积分法计算出液体混合燃油的氧化特征参数，能促进清洁高效内燃机代用燃油的使用。

Description

一种液体混合燃油氧化特征参数的测量系统及方法 技术领域
本发明涉及一种液体燃油加热分析装置，具体而言，是一种液体混合燃油氧化特征参数的测量系统及方法。
背景技术
在能源危机和日益严峻的环境问题的双重压力之下，研发新型清洁高效的代用燃油已成为必然趋势。发动机第Ⅵ阶段排放法规颁布后，新增了颗粒物数量(Particle Number)限值，意味着内燃机污染物排放的控制进入了新的阶段。大量学者研究表明，影响内燃机燃烧和排放的一个重要因素是燃油的理化特性。传统燃油理化特性的表征方法可以测出辛烷值、十六烷值、热值、汽化潜热、粘度等，但表征燃油氧化特征参数的测量方法繁琐，成本也较高。
热重分析法是指在不同氛围中，由程序升温控制加热温度，测试样品的质量与温度的关系，广泛的应用在物理、化工、材料、燃油、纺织等领域，可以实现组分分析、物质鉴别、热参数和动力学参数的测量。通过热重分析，获得热重曲线(TG)和微商热重曲线(DTG)，采用Coats-Redfern积分法计算液体混合燃油的指前因子A和活化能E，对新型清洁高效的内燃机代用燃油的推广应用有很大的促进作用。
发明内容
本发明目的是利用热重分析法与Coats-Redfern积分法耦合，实现液体混合燃油氧化特征参数的测量，解决了传统燃油理化特性表征方法操作繁琐成本高的缺陷。实现本发明的技术方案如下：
不同燃油在超声波震荡混合器充分混合后，通过定量泵将混合燃油泵入放样管道，进而添加到样品盘中，温度控制系统对样品进行程序加热，质量监测系统监测并记录质量变化，实验结束后，从记录系统中得到TG曲线和DTG曲线，采用Coats-Redfern积分法计算出指前因子A和活化能E。
一种液体混合燃油氧化特征参数的测量系统，包括燃油混合系统、加热炉、温度控制系统、气体控制系统和质量监测系统；
其中，所述燃油混合系统将燃油进行混合后通过管道输送到加热炉进行加热燃烧，温度控制系统用来控制加热炉内的温度，气体控制系统用来提供保护气和反应气，质量检测系统用来检测加热炉内燃油的燃烧情况；
所述燃油混合系统包括超声波震荡混合器和定量泵；所述超声波震荡混合器将混合后的 燃油通过管道输入定量泵中；
所述加热炉包括炉管、炉座、炉体、炉体法兰、气体出口、气体出口阀、冷却水套和放样管道；
所述炉管的一端开设有气体出口，气体出口通过气体出口阀控制开闭，炉管的另一端设置在炉体法兰上，炉体与炉体法兰组成一个封闭空间，炉管置于该密闭空间内；所述炉体上设置有冷却水套；
所述炉管内设置有电加热丝，放样管道一端与定量泵连通，另一端延伸进炉管内；
所述气体控制系统包括保护气体进气管道和反应气体进气管道；所述气体进气管道和反应气体进气管道延伸进炉管内；
所述质量检测系统包括电子天平、样品盘、差动变压器和记录系统；所述样品盘设置在电子天平上，所述差动变压器与电子天平连接，记录系统能记录样品质量变化。
进一步的，所述保护气体进气管道和反应气体进气管道延伸进炉管的长度不同，且反应气体进气管道置于样品盘的斜上方位置。
进一步的，所述气体控制系统还包括保护气气瓶和反应气气瓶、质量流量计和流量控制器；所述保护气气瓶用来提供保护气，反应气气瓶用来提供反应气，质量流量计用来记录保护气气瓶和反应气气瓶流入到保护气体进气管道和反应气体进气管道的气体流量，流量控制器用来控制质量流量计。
进一步的，所述冷却水套上开设有冷却液入口和冷却液出口，冷却液通过冷却液入口进入，从冷却液出口流出。
进一步的，所述温度控制系统包括样品热电偶、炉温热电偶和程序温控仪；所述炉温热电偶设置在炉体内侧，用来检测炉体内的温度，样品热电偶置于样品盘附近用来检测样品的温度，程序温控仪与电加热丝连接，程序温控仪的控制电加热丝的等温或非等温加热。
进一步的，所述炉体法兰设置在炉座上，炉体法兰中心位置上开设有圆孔，圆孔内设置有内密封挡板与外密封挡板，且内密封挡板与外密封挡板之间设置有密封圈，保护气体进气管道和反应气体进气管道穿过内密封挡板与外密封挡板进入炉管内，且保护气体进气管道的出气口靠近内密封挡板。
进一步的，所述程序温控仪还用来控制冷却水套内冷却液的温度，从而实现对炉体温度的控制。
液体混合燃油氧化特征参数的测量系统的测量方法，包括如下步骤：
步骤一，燃油A和燃油B在超声波震荡混合器中进行震荡混合，从而确保燃油混合充分；
步骤二，混合后的燃油经定量泵泵入放样管道中，进而加入炉管内部的样品盘中，温度 控制系统控制电加热丝按照设定温度进行加热，质量监测系统监测样品质量变化，气体控制系统使样品在特定氛围中热解，并及时排除废气；
步骤三，从记录系统中输出TG曲线和DTG曲线；
步骤四，利用TG曲线和DTG曲线结合Coats-Redfern积分法计算混合燃油的氧化特征参数。
本发明的有益效果：
1.本发明提供的一种液体混合燃油氧化特征参数的测量方法及系统能够实现在特定氛围中，按照特定升温速率对液体混合燃油的氧化特性进行分析，采用Coats-Redfern积分法能简便快捷的计算出混合燃油的指前因子A和活化能E。
2.本发明提高了电子天平测量精度，设计了温度补偿和载气矫正，减弱了因气体流动而造成电子天平晃动的问题。
3.本发明设计的放样管道解决了传统氧化特征参数测量过程中放取样品繁琐，易损坏样品盘的缺点，简化了测试过程，降低了操作难度。
4.本发明设计的气体出口和气体出口阀能实现对燃油氧化产物的收集，可在气体出口后连接其他气体分析仪器(如红外光谱仪)进一步分析燃油的氧化产物。
附图说明
图1是本发明整体操作流程图。
图2是本发明加热炉整体结构示意图。
图3是本发明炉体法兰左视图。
图4是本发明控制系统流程图。
图5是从记录系统中获得的PODE/柴油混合燃油的TG曲线和DTG曲线。
图6是Coats-Redfern法计算出的PODE/柴油混合燃油热特性曲线。
图中标记为：
1-保护气气瓶和反应气气瓶，2-锁紧螺母，3-质量流量计，4-冷却液入口，5-流量控制器，6-炉体法兰，7-炉管，8-保护气体进气管道，9-反应气体进气管道，10-炉座，11-差动变压器，12-记录系统，13-电子天平，14-外密封挡板，15-密封圈，16-内密封挡板，17-电加热丝，18-冷却液出口，19-冷却器，20-程序温控仪，21-炉体，22-炉温热电偶，23-样品热电偶，24-冷却水套，25-样品盘，26-气体出口，27-气体出口阀，28-超声波震荡混合器，29-定量泵，30-放样管道。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“轴向”、“径向”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下面首先结合附图具体描述根据本发明实施例的
一种液体混合燃油氧化特征参数的测量系统，包括燃油混合系统、加热炉、温度控制系统、气体控制系统和质量监测系统；
其中，所述燃油混合系统将燃油进行混合后通过管道输送到加热炉进行加热燃烧，温度控制系统用来控制加热炉内的温度，气体控制系统用来提供保护气和反应气，质量检测系统用来检测加热炉内燃油的燃烧情况；
所述燃油混合系统包括超声波震荡混合器28和定量泵29；所述超声波震荡混合器28将混合后的燃油通过管道输入定量泵29中；
所述加热炉包括炉管7、炉座10、炉体21、炉体法兰6、气体出口26、气体出口阀27、冷却水套24和放样管道30；
所述炉管7的一端开设有气体出口26，气体出口26通过气体出口阀27控制开闭，炉管7的另一端设置在炉体法兰6上，炉体21与炉体法兰6组成一个封闭空间，炉管7置于该密闭空间内；所述炉体21上设置有冷却水套24；
所述炉管7内设置有电加热丝17，放样管道30一端与定量泵29连通，另一端延伸进炉 管7内；
所述气体控制系统包括保护气体进气管道8和反应气体进气管道9；所述保护气体进气管道8和反应气体进气管道9延伸进炉管7内；
所述质量检测系统包括电子天平13、样品盘25、差动变压器11和记录系统12；所述样品盘25设置在电子天平13上，所述差动变压器11与电子天平13连接，记录系统12能记录样品质量变化。
其中，所述保护气体进气管道8和反应气体进气管道9延伸进炉管7的长度不同，且反应气体进气管道9置于样品盘25的斜上方位置。
所述气体控制系统还包括保护气气瓶和反应气气瓶1、质量流量计3和流量控制器5；所述保护气气瓶用来提供保护气，反应气气瓶用来提供反应气，质量流量计3用来记录保护气气瓶和反应气气瓶1流入到保护气体进气管道8和反应气体进气管道9的气体流量，流量控制器5用来控制质量流量计3。
所述冷却水套24上开设有冷却液入口4和冷却液出口18，冷却液通过冷却液入口4进入，从冷却液出口18流出。
所述温度控制系统包括样品热电偶23、炉温热电偶22和程序温控仪20；所述炉温热电偶23设置在炉体21内侧，用来检测炉体21内的温度，样品热电偶22置于样品盘25附近用来检测样品的温度，程序温控仪20与电加热丝17连接，程序温控仪20的控制电加热丝17的等温或非等温加热。
所述炉体法兰6设置在炉座10上，炉体法兰6中心位置上开设有圆孔，圆孔内设置有内密封挡板16与外密封挡板14，且内密封挡板16与外密封挡板14之间设置有密封圈15，保护气体进气管道8和反应气体进气管道9穿过内密封挡板16与外密封挡板14进入炉管7内，且保护气体进气管道8的出气口靠近内密封挡板15。
所述程序温控仪20还用来控制冷却水套24内冷却液的温度，从而实现对炉体21温度的控制。
所述电加热丝17周围由玻璃纤维填充。
所述炉体法兰6内设置有内密封挡板16、密封圈15、外密封挡板14；所述炉座10内设置有差动变压器11；
所述温度控制系统包括电加热丝17、样品热电偶23、炉温热电偶22、程序温控仪20、冷却器19、冷却液入口4、冷却液出口18、冷却水套24，所述程序温控仪20接受炉温热电偶22和样品热电偶23的电信号，并控制冷却器19；
所述炉管7内壁装有电加热丝17，受程序温控仪20的控制可实现等温或非等温加热。
所述炉体21和炉体法兰6通过螺栓固定在一起，炉体21内部嵌有冷却水套24，冷却液在程序温控仪20的控制下对炉体进行冷却，内密封挡板16和外密封挡板14间有密封圈15密封，密封圈15内布置有进气管道，反应气体进气管道9将反应气体通入样品盘25后方，保护气体进气管道8将保护气体通入炉管7内部。
电子天平13末端与差动变压器11连接，记录系统12能记录样品质量变化。
样品热电偶23与样品盘25连接，炉温热电偶22固定在炉体21的内壁上，程序温控仪20通过热电偶监测的温度信号，改变电加热丝17上电流的大小和冷却液的流速，实现对样品温度和炉体温度的控制。
实现本发明的整体操作流程如图1所示；
步骤一，燃油A和燃油B在超声波震荡混合器28中进行震荡混合，确保燃油混合充分；
步骤二，混合后的燃油经定量泵29泵入放样管道30中，进而加入加炉管7内部的样品盘25中，温度控制系统控制电加热丝17按照设定温度进行加热，质量监测系统监测样品质量变化，气体控制系统使样品在特定氛围中热解，并及时排除废气；
步骤三，从记录系统12中输出TG曲线和DTG曲线；
步骤四，利用TG曲线和DTG曲线结合Coats-Redfern积分法计算混合燃油的氧化特征参数。
如图2所示，一种液体混合燃油氧化特征参数的测量方法及装置包括燃油混合系统、加热炉、温度控制系统、气体控制系统、质量监测系统，其中，
所述燃油混合系统包括超声波震荡混合器28和定量泵29；
所述加热炉包括炉管7、炉座10、炉体21、炉体法兰6、气体出口26、气体出口阀27、冷却水套24、锁紧螺母2、放样管道30，炉体法兰6内有内密封挡板16、外密封挡板14、密封圈15，炉座10内装有差动变压器11，炉体21内嵌有冷却水套24；
所述温度控制系统包括电加热丝17、炉温热电偶22、样品热电偶23、程序温控仪20、冷却器19、冷却液入口4、冷却液出口18，冷却器19通过管路与冷却液入口4连接，炉管7内壁设置有电加热丝17对样品进行加热；
所述气体控制系统包括反应气气瓶和保护气气瓶1、保护气体进气管道8、反应气体进气管道9、质量流量计3、流量控制器5；
所述质量监测系统包括电子天平13、样品盘25、差动变压器11、记录系统12，电子天平13末端与差动变压器11连接，记录系统12能记录样品的质量变化，并且输出TG曲线和DTG曲线。
如图4所示，所述电子天平13与差动变压器11连接，温度补偿、载气矫正和差动变压 器11的电信号经放大器处理后传输到数模转换模块，最终由计算机接受处理；样品热电偶23测量得到的电信号经偏差放大器处理后接入计算机，经偏差放大器处理后的电信号接入PID控制器，PID控制器根据计算机设定的升温速率控制程序温控仪20，调节电加热丝17的功率和冷却器19的运行；流量控制器5按照设定气体流量控制质量流量计3开度，将保护气体和反应气体通入炉管7内。
PODE聚甲氧基二甲醚分子中的氧在燃烧过程中起到自供氧的作用，对改善柴油机的燃烧和排放特性大有益处，将PODE作为组分来优化柴油燃油的性能是新的研究趋势。下文将介绍PODE/柴油混合燃油的氧化特征参数在该发明装置中的测试过程。
步骤一，把PODE与柴油按一定比例配制为混合燃油，混合燃油中PODE的体积分数为0％、10％、20％、30％，记为P0、P10、P20、P30。把配制的燃油放入超声波震荡混合器28，在40kHz的频率下震荡10min。
步骤二，启动定量泵29，将样品质量设置为4mg，定量泵29将混合充分的燃油泵入放样管道30中，最终将4mg样品放入样品盘25中；放样结束后，关闭定量泵29，打开气体出口阀27。在计算机控制面板中输入升温速率为15℃/min，升温范围为40～400℃；反应气体为N 280％+O 220％，反应气气体流量为50mL/min，保护气体为纯N 2，保护气气体流量为50mL/min。流量控制器5根据设定流量调节质量流量计3的开度，将保护气体和反应气体以恒定流速通入炉管7。等电子天平13读数稳定后，对电子天平13进行调零，并进行载气矫正和温度补偿；启动程序温控仪20，样品热电偶23将样品温度实时反馈给程序温控仪20，程序温控仪20调节通入电加热丝17中的电流大小，使样品按照设定升温速率加热；炉温热电偶22将炉体21的温度反馈给程序温控仪20，冷却器19在程序温控仪20的控制下自动调节冷却液的流速，将炉体21控制在恒温状态下。
步骤三，质量监测系统自动记录样品质量变化情况，从记录系统12得到TG曲线和DTG曲线，如图5所示；实验结束后，关闭气体出口阀27。
步骤四，根据TG曲线和DTG曲线，结合Coats-Redfern积分法计算指前因子A和活化能E，方程如下：
Figure PCTCN2020110209-appb-000001
式中，a为转换率％；T为热力学温度K；A为指前因子；b为升温速率℃/min；E为活化能kJ/mol；R为气体常数。
以
Figure PCTCN2020110209-appb-000002
对
Figure PCTCN2020110209-appb-000003
作图，通过线性拟合可以得到直线斜率为
Figure PCTCN2020110209-appb-000004
截距为
Figure PCTCN2020110209-appb-000005
的一 条直线，如图6所示，通过直线的斜率可以求得活化能E，带入方程即可求得指前因子A，结果如表1：
Figure PCTCN2020110209-appb-000006
表1：PODE/柴油混合燃油的回归方程、活化能及指前因子。
从图5分析可知，由TG曲线可知，随着PODE掺混比例的增加，样品的起始失重温度和终止失重温度都降低，表明PODE的添加降低了燃油的热稳定性；从DTG曲线可以看出，随PODE掺混比增加，燃油样品的失重率曲线向低温区域偏移，失重率峰值温度逐渐降低，P10、P20和P30燃油样品的失重率峰值温度较P0分别降低了4.5℃、13.6℃和27.2℃，表明混合燃油的热挥发性能明显优于柴油。混合燃油的活化能E和指前因子A随PODE掺混比例的增加而逐渐降低，说明PODE的添加改善了燃油的氧化活性，有利于氧化反应的发生，改善柴油机的燃烧性能。
从表1可以看出各曲线的线性回归系数R 2均大于0.98，拟合度理想。说明该发明装置能实现在特定反应气体中、特定升温速率下对混合燃油的氧化特性的测量，并能快捷简便的计算出混合燃油的氧化特征参数。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (9)

  1. 一种液体混合燃油氧化特征参数的测量系统，其特征在于，包括燃油混合系统、加热炉、温度控制系统、气体控制系统和质量监测系统；
    其中，所述燃油混合系统将燃油进行混合后通过管道输送到加热炉进行加热燃烧，温度控制系统用来控制加热炉内的温度，气体控制系统用来提供保护气和反应气，质量检测系统用来记录加热炉内燃油的质量变化；
    所述燃油混合系统包括超声波震荡混合器(28)和定量泵(29)；所述超声波震荡混合器(28)将混合后的燃油通过管道输入定量泵(29)中；
    所述加热炉包括炉管(7)、炉座(10)、炉体(21)、炉体法兰(6)、气体出口(26)、气体出口阀(27)、冷却水套(24)和放样管道(30)；
    所述炉管(7)的一端开设有气体出口(26)，气体出口(26)通过气体出口阀(27)控制开闭，炉管(7)的另一端通过螺纹连接在炉体法兰(6)上，炉体(21)与炉体法兰(6)组成一个封闭空间，炉管(7)置于该密闭空间内；所述炉体(21)上设置有冷却水套(24)；
    所述炉管(7)内设置有电加热丝(17)，放样管道(30)一端与定量泵(29)连通，另一端延伸进炉管(7)内；
    所述气体控制系统包括保护气体进气管道(8)和反应气体进气管道(9)；所述保护气体进气管道(8)和反应气体进气管道(9)延伸进炉管(7)内；
    所述质量检测系统包括电子天平(13)、样品盘(25)、差动变压器(11)和记录系统(12)；所述样品盘(25)设置在电子天平(13)上，所述差动变压器(11)与电子天平(13)连接，记录系统(12)能记录样品质量变化。
  2. 根据权利要求1所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述保护气体进气管道(8)和反应气体进气管道(9)延伸进炉管(7)的长度不同，且反应气体进气管道(9)置于样品盘(25)的斜上方位置。
  3. 根据权利要求1或者2任一项所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述气体控制系统还包括保护气气瓶和反应气气瓶(1)、质量流量计(3)和流量控制器(5)；所述保护气气瓶用来提供保护气，反应气气瓶用来提供反应气，质量流量计(3)用来记录保护气气瓶和反应气气瓶(1)流入到保护气体进气管道(8)和反应气体进气管道(9)的气体流量，流量控制器(5)用来控制质量流量计(3)。
  4. 根据权利要求1所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述冷却水套(24)上开设有冷却液入口(4)和冷却液出口(18)，冷却液通过冷却液入口(4)进入，从冷却液出口(18)流出。
  5. 根据权利要求1所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述温 度控制系统包括样品热电偶(23)、炉温热电偶(22)和程序温控仪(20)；所述炉温热电偶(23)设置在炉体(21)内侧，用来检测炉体(21)内的温度，样品热电偶(22)置于样品盘(25)附近用来检测样品的温度，程序温控仪(20)与电加热丝(17)连接，程序温控仪(20)控制电加热丝(17)实现等温或非等温加热。
  6. 根据权利要求1或者2任一项所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述炉体法兰(6)设置在炉座(10)上，炉体法兰(6)中心位置上开设有圆孔，圆孔内设置有内密封挡板(16)与外密封挡板(14)，且内密封挡板(16)与外密封挡板(14)之间设置有密封圈(15)，保护气体进气管道(8)和反应气体进气管道(9)穿过内密封挡板(16)与外密封挡板(14)进入炉管(7)内，且保护气体进气管道(8)的出气口靠近内密封挡板(15)。
  7. 根据权利要求5所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述程序温控仪(20)还用来控制冷却水套(24)内冷却液的温度，从而实现对炉体(21)温度的控制。
  8. 根据权利要求1所述的液体混合燃油氧化特征参数的测量系统，其特征在于，所述电加热丝(17)周围由玻璃纤维填充。
  9. 根据权利要求1所述的液体混合燃油氧化特征参数的测量系统的测量方法，其特征在于，包括如下步骤：
    步骤一，燃油A和燃油B在超声波震荡混合器(28)中进行震荡混合，从而确保燃油混合充分；
    步骤二，混合后的燃油经定量泵(29)泵入放样管道(30)中，进而加入炉管(7)内部的样品盘(25)中，温度控制系统控制电加热丝(17)按照设定温度进行加热，质量监测系统监测样品质量变化，气体控制系统使样品在特定氛围中热解，并及时排除废气；
    步骤三，从记录系统(12)中输出TG曲线和DTG曲线；
    步骤四，利用TG曲线和DTG曲线结合Coats-Redfern积分法计算混合燃油的氧化特征参数。
PCT/CN2020/110209 2019-09-19 2020-08-20 一种液体混合燃油氧化特征参数的测量系统及方法 WO2021052097A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910886653.7A CN110736767A (zh) 2019-09-19 2019-09-19 一种液体混合燃油氧化特征参数的测量系统及方法
CN201910886653.7 2019-09-19

Publications (1)

Publication Number Publication Date
WO2021052097A1 true WO2021052097A1 (zh) 2021-03-25

Family

ID=69268120

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/110209 WO2021052097A1 (zh) 2019-09-19 2020-08-20 一种液体混合燃油氧化特征参数的测量系统及方法

Country Status (2)

Country Link
CN (1) CN110736767A (zh)
WO (1) WO2021052097A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024077267A1 (en) 2022-10-07 2024-04-11 The Broad Institute, Inc. Prime editing methods and compositions for treating triplet repeat disorders

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110736767A (zh) * 2019-09-19 2020-01-31 江苏大学 一种液体混合燃油氧化特征参数的测量系统及方法
CN112034004B (zh) * 2020-08-12 2021-06-29 北京科技大学 一种测试镁合金燃烧风险性的试验系统与方法
CN112903977B (zh) * 2021-01-13 2023-05-16 中国人民解放军92578部队 一种润滑油蒸发损失实时检测系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009071144A1 (de) * 2007-12-03 2009-06-11 Sartorius Ag Verfahren und vorrichtung zur materialfeuchtebestimmung
CN202813413U (zh) * 2012-04-17 2013-03-20 青岛科技大学 一种搅拌式超声乳化在线燃烧装置
CN105092405A (zh) * 2014-05-06 2015-11-25 梅特勒-托利多公开股份有限公司 温度调制的热解重量分析
CN107860675A (zh) * 2017-11-23 2018-03-30 江苏大学 一种测定燃油蒸气压和蒸发焓的方法
CN109521048A (zh) * 2018-10-15 2019-03-26 大连理工大学 一种用于柱状煤热解时实时测温测重的实验系统及方法
CN110736767A (zh) * 2019-09-19 2020-01-31 江苏大学 一种液体混合燃油氧化特征参数的测量系统及方法
CN210953893U (zh) * 2019-09-19 2020-07-07 江苏大学 一种液体混合燃油氧化特征参数的测量系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2490570Y (zh) * 2001-04-20 2002-05-08 王嘉福 水平式动态热重分析仪
CN201522411U (zh) * 2009-10-29 2010-07-07 中国计量学院 油烟道油垢燃烧特性分析装置
CN101995418B (zh) * 2010-09-08 2012-05-09 安徽中烟工业公司 一种热分析产物收集装置
CN104089976B (zh) * 2014-07-09 2016-08-24 安徽工业大学 一种应用于固体燃料燃烧机理研究的可视装置
CN106197052B (zh) * 2016-07-12 2018-09-14 中国石油化工股份有限公司 一种用于化工加热炉的安全控制方法
CN107271320B (zh) * 2017-06-07 2019-08-30 华中科技大学 一种可实现快速升温的热重分析仪
CN208537335U (zh) * 2018-07-10 2019-02-22 昆明理工大学 一种多功能热重分析仪
CN209246676U (zh) * 2018-12-17 2019-08-13 苏州市吴中不锈钢有限公司 一种具有节能控制的炼钢加热炉

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009071144A1 (de) * 2007-12-03 2009-06-11 Sartorius Ag Verfahren und vorrichtung zur materialfeuchtebestimmung
CN202813413U (zh) * 2012-04-17 2013-03-20 青岛科技大学 一种搅拌式超声乳化在线燃烧装置
CN105092405A (zh) * 2014-05-06 2015-11-25 梅特勒-托利多公开股份有限公司 温度调制的热解重量分析
CN107860675A (zh) * 2017-11-23 2018-03-30 江苏大学 一种测定燃油蒸气压和蒸发焓的方法
CN109521048A (zh) * 2018-10-15 2019-03-26 大连理工大学 一种用于柱状煤热解时实时测温测重的实验系统及方法
CN110736767A (zh) * 2019-09-19 2020-01-31 江苏大学 一种液体混合燃油氧化特征参数的测量系统及方法
CN210953893U (zh) * 2019-09-19 2020-07-07 江苏大学 一种液体混合燃油氧化特征参数的测量系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
METTLER-TOLEDO HOLDING AG: "METTLER TOLEDO TGA SDTA851 Thermogravimetric Analyzer Operation Manual", 28 May 2012 (2012-05-28), XP009526881, Retrieved from the Internet <URL:https://wenku.baidu.com/view/198cd924aaea998fcc220e53.html?fr=search-1-wk_sea-income1> *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024077267A1 (en) 2022-10-07 2024-04-11 The Broad Institute, Inc. Prime editing methods and compositions for treating triplet repeat disorders

Also Published As

Publication number Publication date
CN110736767A (zh) 2020-01-31

Similar Documents

Publication Publication Date Title
WO2021052097A1 (zh) 一种液体混合燃油氧化特征参数的测量系统及方法
CN111579410B (zh) 一种陶瓷基复合材料燃气环境疲劳试验系统
Mitu et al. Explosion parameters of methanol–air mixtures
US20130298882A1 (en) EGR with Temperature Controlled Venturi Flow Meter
CN106501116B (zh) 一种燃气环境下的热障涂层热疲劳试验装置
El-Zoheiry et al. Combustion and emission characteristics of Jojoba biodiesel-jet A1 mixtures applying a lean premixed pre-vaporized combustion techniques: An experimental investigation
CN211086170U (zh) 用于流动态金属燃料离散颗粒的点火装置
CN108506097A (zh) 航空发动机燃油喷嘴结焦试验装置及热流测量方法
CN109085096A (zh) 一种获取燃烧过程中碳烟颗粒破碎特性的装置及方法
CN111589316B (zh) 一种高效家用燃气实时掺氢与热值测量系统
CN102840995A (zh) Egr冷却器性能测试分析系统
CN210953893U (zh) 一种液体混合燃油氧化特征参数的测量系统
CN113237916A (zh) 一种混氢天然气热值测量装置及方法
CN110687244B (zh) 一种航空发动机燃料燃烧特性实验检测系统
CN104949123A (zh) 一种用于天然气掺烧醇基燃料的装置和方法
CN109141890B (zh) 基于退偏比表征柴油机尾气碳烟破碎特性的装置及方法
RU90908U1 (ru) Устройство для исследования жидкого ракетного топлива
CN112881465B (zh) 一种多初始态燃料瞬态反应流场参数测试系统
CN215179846U (zh) 一种混氢天然气热值测量装置
US4657737A (en) Apparatus for determining the fuel-air ratio of Otto engines
Knorsch et al. A novel heat flux burner system to determine the laminar flame velocity of liquid fuels
CN220819837U (zh) 水氧耦合环境下的原位拉曼光谱检测系统
CN209117620U (zh) 催化燃烧传感器
CN217688412U (zh) 一种改善称量环境的煤化验分析系统
CN203101080U (zh) Egr冷却器性能测试分析系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20865125

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20865125

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20865125

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 26.10.2022)