US 2026/0140097 A1Published application

System and method for analyzing carbon isotopes of carbon dioxide in inclusions

AssigneesBeijing Urban Construction Exploration & Surveying Design Research Institute Co., Ltd, Inner Mongolia University of Technology, Hebei University of Engineering

InventorsXiangguo GUO, Jianyang FENG, Shougang ZHANG, Zhu LI, Guohui ZHANG, Shanming ZHANG, Tianlong JIAO

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Abstract

A system and method for analyzing carbon isotopes of carbon dioxide in inclusions are provided. The system includes: a carrier, a sealing cover, a gas inlet device, a flat-grinding device, a support plate, a flat-grinding driving device, a telescopic rod, an exhaust device, a first heating plate, a carbon dioxide collecting tube, a liquid nitrogen cup, a first electromagnetic three-way valve, and an isotope mass spectrometer. A flat-grinding chamber is arranged on the carrier, and the sealing cover is sealed at a top end of the carrier. The telescopic rods are positioned on two sides of the carrier, and the support plate is positioned at top ends of the telescopic rods. The flat-grinding device extends into the flat-grinding chamber. The first heating plate is mounted at a bottom end of the flat-grinding chamber.

Claims6

Dependent claims

A system for analyzing carbon isotopes of carbon dioxide in inclusions, comprising:

a carrier (10), a sealing cover (20), a gas inlet device (30), a flat-grinding device (40), a support plate (50), a flat-grinding driving device (60), a telescopic rod (70), an exhaust device, a first heating plate (90), a carbon dioxide collecting tube (100), a liquid nitrogen cup (110), a first electromagnetic three-way valve (120), and a mass spectrometer (130);
wherein a flat-grinding chamber (11) is arranged on the carrier (10), and the sealing cover (20) is mounted at a top end of the carrier (10) and seals the flat-grinding chamber (11);
a pair of the telescopic rods (70) are positioned on two sides of the carrier (10), and the support plate (50) is mounted at output ends of the telescopic rods (70);
the flat-grinding device (40) and the flat-grinding driving device (60) are mounted on the support plate (50), and an output end of the flat-grinding device (40) passes through the sealing cover (20) and extends into the flat-grinding chamber (11);
the first heating plate (90) is mounted at a bottom end of the flat-grinding chamber (11), two sides of the flat-grinding chamber (11) are provided with a gas inlet (111) and a gas outlet (112), the gas inlet device (30) is in communication with the gas inlet (111), the exhaust device is in communication with the gas outlet (112), the exhaust device, the carbon dioxide collecting tube (100), the first electromagnetic three-way valve (120), and the mass spectrometer (130) are sequentially in communication, and the carbon dioxide collecting tube (100) is positioned in the liquid nitrogen cup (110);
the exhaust device comprises a plurality of gas treatment devices (81) and a gas collecting pipe (82), a number of the gas treatment devices (81) is identical to a number of the gas outlets (112), each of the gas treatment devices (81) comprises a first gas outlet pipe (811), a second electromagnetic three-way valve (812), a second gas outlet pipe (813), a third gas outlet pipe (814), a first gas treatment trap (815), and a second gas treatment trap (816), one end of the first gas outlet pipe (811) is in communication with the gas outlet (112), and another end of the first gas outlet pipe (811) is in communication with the second electromagnetic three-way valve (812), the second gas outlet pipe (813) and the third gas outlet pipe (814) are respectively in communication with two output ends of the second electromagnetic three-way valve (812), the first gas treatment trap (815) is mounted on the second gas outlet pipe (813), the second gas treatment trap (816) is mounted on the third gas outlet pipe (814), a plurality of third gas outlet pipes (814) are all in communication with the gas collecting pipe (82), and the gas collecting pipe (82) is in communication with the carbon dioxide collecting tube (100).

3 more elements

A method for using a system for analyzing carbon isotopes of carbon dioxide in inclusions, comprising the following steps:

S1. opening a sealing cover (20) and enabling a flat-grinding plate (41) to separate from a flat-grinding chamber (11), placing an equal amount of inclusion samples in each flat-grinding chamber (11), allowing the flat-grinding plate (41) to re-enter the flat-grinding chamber (11), and sealing the flat-grinding chamber (11) with the sealing cover (20);
S2. lowering telescopic rods (70) to allow a second heating plate (140) at a bottom end of the flat-grinding plate (41) to descend until contacting the samples without applying pressure, driving a first motor (61), and flat-grinding the inclusion samples by the second heating plate (140) in each flat-grinding chamber (11) through transmission among a first gear (62), a second gear (43), and an engagement among the plurality of second gears (43);
S3. after flat-grinding for a period of time, opening a first electromagnetic valve (32) to introduce helium gas into the flat-grinding chamber (11), and simultaneously opening a flow path between a second electromagnetic three-way valve (812) and a second gas outlet pipe (813);
fully releasing gases adsorbed on surfaces of the inclusion samples and discharging excessive air inside the device;
discharging the gases into an atmosphere after harmful gases are removed through a first gas treatment trap (815);
S4. after a period of time, closing the flow path between the second electromagnetic three-way valve (812) and the second gas outlet pipe (813), and simultaneously opening a flow path between the second electromagnetic three-way valve (812) and a third gas outlet pipe (814);
introducing helium gas to purge a second gas treatment trap (816), a gas collecting pipe (82), and a carbon dioxide collecting tube (100);
and discharging gases through a first electromagnetic three-way valve (120) into the atmosphere;
S5. closing the first electromagnetic valve (32) and the second electromagnetic three-way valve (812), electrically heating a first heating plate (90) and the second heating plate (140), and performing high-temperature heating on upper and lower surfaces of the inclusions until the inclusions burst and gases inside the inclusions are released;
S6. opening the first electromagnetic valve (32), the second electromagnetic three-way valve (812), and the flow path of the third gas outlet pipe (814), introducing helium gas so that air from the inclusions passes through the second gas treatment trap (816) to remove water vapor, collecting gases in the gas collecting pipe (82) and transferring the gases into the carbon dioxide collecting tube (100), introducing liquid nitrogen into a liquid nitrogen cup (110), solidifying collected carbon dioxide under a low-temperature environment, and discharging other gases into the atmosphere through the first electromagnetic three-way valve (120);
and
S7. removing the liquid nitrogen cup (110), continuously introducing helium gas, sublimating solidified carbon dioxide into gaseous carbon dioxide again, and introducing the gaseous carbon dioxide through the first electromagnetic three-way valve (120) into a mass spectrometer (130) for isotope analysis and determination.

9 more elements

Dependencies are inferred from the claim text.