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A kind of purification method of liquid methane propellant sulfide

A liquid methane, purification method technology, applied in chemical instruments and methods, purification/separation of hydrocarbons, liquefaction, etc., can solve problems affecting engine performance and life

Active Publication Date: 2022-05-24
SHANDONG NON METALLIC MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the many deficiencies in the prior art, the present invention provides a method for purifying liquid methane propellant sulfide. The method utilizes a multi-stage gradient low-temperature purification method to make trace amounts of sulfide and other impurities in methane propellant After low-temperature solidification, it is adsorbed by the adsorption layer; thereby reducing the content of sulfide impurities in the propellant, and solving the problem that the sulfide impurities in the liquid methane propellant affect the performance and life of the engine

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  • A kind of purification method of liquid methane propellant sulfide

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Embodiment 1

[0033] A method for purifying liquid methane propellant sulfide, its concrete steps are:

[0034] Using the liquid methane propellant sulfide purification device provided in Example 1, the total sulfur content is about 1.0×10 -5 mol / mol (in H 2 S meter) liquid methane propellant, enter the low temperature purification chamber at a flow rate of 0.8L / min, the temperature of the first purification zone I is -158°C, the temperature of the second purification zone II is -80°C, and the temperature of the third purification zone III The temperature is -45℃;

[0035] After the propellant flows through the low temperature purification zone, it enters the normal temperature gasification chamber. The temperature of the normal temperature gasification chamber is 25°C, and the propellant is gasified into gaseous methane;

[0036] The gaseous methane enters the high temperature purification chamber from the normal temperature gasification chamber, the temperature of the high temperature p...

Embodiment 2

[0038] A method for purifying liquid methane propellant sulfide, its concrete steps are:

[0039] Using the liquid methane propellant sulfide purification device provided in Example 1, the total sulfur content is about 3.0 × 10 -3 mol / mol (in H 2 S meter) liquid methane propellant, enter the low temperature purification chamber at a flow rate of 0.1L / min, the temperature of the first purification zone I is -150 ° C, the temperature of the second purification zone II is -80 ° C, and the temperature of the third purification zone III is -80 ° C. The temperature is -20℃;

[0040] After the propellant flows through the low temperature purification zone, it enters the normal temperature gasification chamber. The temperature of the normal temperature gasification chamber is 20 °C, and the propellant is gasified into gaseous methane;

[0041] The gaseous methane enters the high temperature purification chamber from the normal temperature gasification chamber, the temperature of the h...

Embodiment 3

[0043] A method for purifying liquid methane propellant sulfide, its concrete steps are:

[0044] Using the liquid methane propellant sulfide purification device provided in Example 1, the total sulfur content is about 3.0 × 10 -3 mol / mol (in H 2 S meter) liquid methane propellant, enter the low temperature purification chamber at a flow rate of 0.1L / min, the temperature of the first purification zone I is -150 ° C, the temperature of the second purification zone II is -80 ° C, and the temperature of the third purification zone III is -80 ° C. The temperature is -20℃;

[0045] After the propellant flows through the low temperature purification zone, it enters the normal temperature gasification chamber. The temperature of the normal temperature gasification chamber is 20 °C, and the propellant is gasified into gaseous methane;

[0046] The gaseous methane enters the high-temperature purification chamber from the normal-temperature gasification chamber, the temperature of the...

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Abstract

The invention belongs to the field of liquid methane propellants, and specifically provides a method for purifying sulfides of liquid methane propellants. The method uses a multi-stage gradient low-temperature purification method to solidify trace sulfides and other impurities in methane propellants through low-temperature solidification. , is adsorbed by the adsorption layer; thereby reducing the content of sulfide impurities in the propellant, and solving the problem that the sulfide impurities in the liquid methane propellant affect the performance and life of the engine.

Description

technical field [0001] The invention belongs to the field of liquid methane propellant, in particular to a method for purifying liquid methane propellant sulfide. Background technique [0002] Liquid methane propellant is the main development direction of chemical space propulsion in the future. It has the advantages of high specific impulse, non-toxic and non-polluting, and low cost. Currently, countries including the United States, Russia, Italy, and France are actively developing liquid methane propellant technology. my country has carried out related research on liquid methane propellant since the 1980s, and sulfide impurities in methane are an important factor restricting its development. Liquid methane propellant is mainly obtained by natural gas purification and liquefaction. Although the preparation process has been purified, there are still a certain amount of sulfides in the liquid methane propellant, including hydrogen sulfide, carbon disulfide, methyl mercaptan,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/00C07C9/04B01D15/08C10L3/10B01D53/86B01D53/48F25J3/08
CPCC07C7/005B01D15/08C10L3/103B01D53/8603F25J3/08C07C9/04
Inventor 林帅荀其宁张文申张坤许峰刘霞侯倩倩韩吉庆吕辉张雨冀克俭
Owner SHANDONG NON METALLIC MATERIAL RES INST