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High-temperature pressuring thermobalance and application method thereof

A technology of high-temperature pressurization and application method, which is applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of inability to realize rapid pyrolysis experiments and constant temperature gasification experiments, small sample consumption, and complicated operation, and achieves high cost performance. , Wide sample size range and high flexibility

Active Publication Date: 2015-05-13
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commercially available pressurized thermogravimetric analyzer consists of a pressure-bearing balance, a quartz reaction tube, an electric furnace, a pressure-bearing shell, a console, and a gas source. Solution experiment and constant temperature gasification experiment. When experimenting in a water vapor atmosphere, water vapor has entered the balance cavity and corroded the balance, and the weighing is inaccurate. It cannot be used in corrosive atmospheres such as sulfur, nitrogen, and chlorine.

Method used

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  • High-temperature pressuring thermobalance and application method thereof
  • High-temperature pressuring thermobalance and application method thereof
  • High-temperature pressuring thermobalance and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A high-temperature pressurized thermal balance, which includes a tubular resistance furnace 4, a balance 12 and a sampling and setting-out system, is characterized in that a pressure tank 3 has a pressure charging port 20, an exhaust port 19 and a power interface 21, and the pressure tank 3 has a Tubular resistance furnace 4, the middle part of the reaction tube 5 is located inside the pressure tank 3, the lower part of the reaction tube 5 has an air inlet 2 and a thermocouple interface 22, the upper part of the reaction tube 5 has a pressure regulating port, and the pressure regulating port is connected to the cooling device 17, There is a gas outlet 18 on the cooling device 17, and the bottom end of the reaction tube 5 is connected with the elevating rod 1, and the elevating rod 1 moves up and down together with the pressure tank 3 and the reaction tube 5 through the rotation of the motor 23, and the motor 23 is connected with the fixed base 24, The top of the react...

Embodiment 2

[0036] Put 50g of Huolinhe lignite into the sample basket 7, close the sealing flange 8; turn on the power, start the temperature program, and the reaction temperature is 900°C; after reaching the reaction temperature, open the protective gas inlet 14 and the pressure filling port 20, Enter the inert gas nitrogen 29, and close the pressure charging port 20 after reaching the experimental pressure of 1.0MPa; open the Unicom valve 25 and the ball valve 6 in turn, feed the inert gas nitrogen 29 from the reaction gas inlet 2, and use the pressure regulating valve 26 to adjust the system pressure; open the balance 12 and the data acquisition software of the computer; the starting motor 23 utilizes the lifting rod 1 to raise the reaction tube 5 and the pressure tank 3, so that the sample basket 7 is in the constant temperature section of the reaction tube 5, and starts the pyrolysis reaction; after the pyrolysis is completed, the starting motor 23 Use the lifting rod 1 to lower the r...

Embodiment 3

[0038]Put 30g of corncobs into the sample basket 7, close the sealing flange 8; turn on the power, start the temperature program, and the reaction temperature is 800°C; Gas nitrogen 29, after reaching the experimental pressure of 1.0MPa, close the pressure charging port 20; open the Unicom valve 25 and the ball valve 6 in turn, feed the inert gas nitrogen 29 from the reaction gas inlet 2, and use the pressure regulating valve 26 to regulate the system pressure; open the balance 12 and The data acquisition software of the computer; the starting motor 23 utilizes the lifting rod 1 to raise the reaction tube 5 and the pressure tank 3, so that the sample basket 7 is in the constant temperature section of the reaction tube 5, and starts the pyrolysis reaction; after the pyrolysis is completed, the starting motor 23 utilizes the lifting The rod 1 lowers the reaction tube 5 and the pressure tank 3, so that the sample basket 7 leaves the reaction area quickly; opens the pressure regula...

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Abstract

The invention relates to a high-temperature pressuring thermobalance. The high-temperature pressuring thermobalance comprises a tube type resistance furnace (4), a balance (12) and a sample taking and placing system, wherein the tube type resistance furnace (4) is arranged inside a pressure tank (3), the middle part of a reaction tube (5) is located inside the tube type resistance furnace (4), a gas inlet (2) and a thermocouple interface (22) are formed at the lower part of the reaction tube (5), a pressure regulating hole is formed at the upper part of the reaction tube (5), the bottom end of the reaction tube (5) is connected with a lifting rod (1), a motor (23) rotates to enable the lifting rod (1) and the pressure tank (3) as well as the reaction tube (5) to move up and down, and the top end of the reaction tube (5) is connected with the sample taking and placing system by a ball valve (6). The high-temperature pressuring thermobalance has the advantages of simple structure and convenience in operation, and is suitable for operation in corrosive atmosphere and various atmospheres.

Description

technical field [0001] The invention belongs to a high-temperature pressurized thermal balance and an application method. Background technique [0002] Thermobalance is an instrument for thermogravimetric analysis and thermogravimetric differential measurement of micro samples. Most of the general thermogravimetric analyzers are tested under normal pressure, and there are few high-temperature pressurized thermobalances on the market. The commercially available pressurized thermogravimetric analyzer consists of a pressure-bearing balance, a quartz reaction tube, an electric furnace, a pressure-bearing shell, a console, and a gas source. Solution experiment and constant temperature gasification experiment, when experimenting in water vapor atmosphere, water vapor has entered the balance cavity and corroded the balance, and the weighing is inaccurate, so it cannot be used in corrosive atmospheres containing sulfur, nitrogen, chlorine, etc. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
Inventor 李春玉房倚天夏立森黄戒介赵建涛
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI