Sulfur-nitrogen crystalline silica cracking tube

A pyrolysis tube and quartz technology, applied in the direction of combustion method, laboratory equipment, combustion type, etc., can solve the problems of lowering the sample temperature, incomplete gasification of the sample, and affecting the accuracy of the test results, etc.

Inactive Publication Date: 2009-05-27
泰州市中环分析仪器有限公司
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AI Technical Summary

Problems solved by technology

Such a structure has the following disadvantages: the carrier gas directly enters the gasification chamber without preheating, which reduces the temperature around the sample, so that the sample cannot be completely gasified and enters the combustion chamber, resulting in carbon deposits or sample residues on the wall of the gasification chamber, which affects the accuracy of the test results

Method used

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  • Sulfur-nitrogen crystalline silica cracking tube
  • Sulfur-nitrogen crystalline silica cracking tube

Examples

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Effect test

example 1

[0009] Example 1: Referring to Figure 1, the middle section of the sulfur nitrogen quartz cracking tube is the combustion chamber 2, and the two ends are the gasification end 3 and the stable end 1 respectively. There is a gasification chamber 7 inside the gasification end, and a U-shaped carrier gas preheating pipe 8 is arranged between the inner wall of the gasification end and the outer wall of the gasification chamber. One end of the preheating pipe communicates with the gasification chamber, and the other end communicates with the carrier gas port. There is a gap with the inner wall of the gasification end, and the connection between the preheating tube and the gasification chamber is 5cm away from the gasification end port.

[0010] Example 2: see figure 2 , between the inner wall of the gasification end 3 and the outer wall of the gasification chamber 7, there is a spiral carrier gas preheating tube 9 surrounding the gasification chamber. Same example one.

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Abstract

The invention discloses a sulphur nitrogen quartz cracking tube used for an analyzing instrument which uses a cracking method to detect the contents of the sulphur nitrogen elements in a sample; the middle section of the cracking tube is a combustion cavity; the two ends are respectively a gasification end and a stable end; the inside of the gasification end is provided with a gasification cavity which is communicated with a gas loading opening; the inner wall of the gasification end and the outer wall of the gasification cavity are provided with a bent gas loading pre-heating tube; one end of the pre-heating tube is communicated with the gasification cavity and the other end is communicated with the gas loading opening. When the sulphur nitrogen quartz cracking tube works, the loaded gas enters the preheating tube at first and then enters the gasification cavity; the temperature of the loaded gas after preheating achieves the requirement of complete gasification of the sample, thereby avoiding the problems of leading the sample to generate carbon distribution or residua due to the lower temperature of the loaded gas, thereby improving the detection accuracy.

Description

technical field [0001] The invention relates to a sulfur-nitrogen quartz cracking tube, which is applied to a class of analytical instruments for measuring the content of sulfur and nitrogen elements in a sample by using a cracking method. Background technique [0002] When analyzing and determining the content of sulfur and nitrogen elements in petroleum and petroleum derivatives, the sample needs to be completely burned and cracked with a certain gas under high temperature cracking to generate a gaseous substance, and then enter the detection room for analysis and determination, which requires a high temperature Combustion device Quartz pyrolysis tube. The structure of the existing quartz cracking tube is that the middle is the combustion chamber, and the two ends are respectively the gasification end and the stable end. The gas port, the gas-supporting gas inlet, and the carrier gas inlet directly communicate with the gasification chamber. Such a structure has the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/00F23D11/44
Inventor 徐爱荣薛元祥郝军张兆明
Owner 泰州市中环分析仪器有限公司
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