CN-120966539-B - Synergist for improving oxygen flame temperature of natural gas, preparation method, adding equipment and adding method thereof

Abstract

The application relates to the technical field of synergists for improving the oxygen flame temperature of natural gas, in particular to a synergist for improving the oxygen flame temperature of natural gas, a preparation method, an adding device and an adding method thereof, wherein the components of the synergist can be used for improving the unit combustion heat value and the combustion rate while realizing stable mixing, the oxygen flame temperature is improved to be higher than 3200 ℃, the cutting and welding speed is higher, the synergist can be added into liquefied natural gas for liquid mixing in an environment of-160 ℃, and the liquefied natural gas can directly enter a welding and cutting working condition after being gasified.

Inventors

• SUN YONG
• WANG DONG

Assignees

• 锦州安燃高能切割气有限公司

Dates

Publication Date

20260512

Application Date

20250820

Claims (5)

1. 1. A synergist for raising the temperature of oxygen flame of natural gas is characterized in that: the synergist for improving the oxygen flame temperature of the natural gas comprises the following components in percentage by mass: 3% ferrocene, 1% tetrahydrofuran, 2% aluminum sec-butoxide, 70% pentane and 24% propadiene.
2. 2. The method for preparing the synergist for improving the oxygen flame temperature of natural gas according to claim 1, wherein the method comprises the following steps: The method comprises the following steps: s1, preparing a ferrocene solution, namely injecting 3% of ferrocene into a mixed Dewar bottle, injecting 1% of tetrahydrofuran into the mixed Dewar bottle, and diluting and dissolving the ferrocene to obtain the ferrocene solution; s2, preparing a combustion rate synergistic solution, and injecting 2% of aluminum sec-butoxide into the mixed dewar to obtain the combustion rate synergistic solution; S3, preparing a heat value rate synergistic solution, and injecting 70% of pentane into the mixed Dewar flask to obtain the heat value rate synergistic solution; s4, preparing a non-low-temperature natural gas synergist, and injecting 24% of propadiene into the mixed dewar to obtain the non-low-temperature natural gas synergist; S5, preparing a finished product synergist for improving the oxygen flame temperature of the natural gas, injecting the non-low-temperature natural gas synergist into a liquid nitrogen heat exchange tank for low-temperature cooling, wherein the cooling temperature is 160 ℃ below zero, and then injecting the non-low-temperature natural gas synergist into a finished product Dewar bottle to obtain the finished product synergist for improving the oxygen flame temperature of the natural gas.
3. 3. A method for using the synergist as defined in claim 1, wherein the mass ratio of the synergist for raising the oxygen flame temperature of the natural gas to the natural gas is 5-95%.
4. 4. The method of using the device of claim 3, wherein the adding device comprises a final product Dewar bottle, a natural gas storage tank, a natural gas welding and conveying pipeline, a water bath type gasifier and a PLC controller, wherein the liquid inlet end of the final product Dewar bottle is connected with the liquid outlet end of a liquid nitrogen heat exchange tank, the liquid outlet end of the final product Dewar bottle is provided with a total liquid outlet pipe, one end of the total liquid outlet pipe far away from the final product Dewar bottle is provided with a first liquid outlet pipe and a second liquid outlet pipe in a communicating way, the first liquid outlet pipe is connected with the liquid inlet end of the natural gas storage tank, the second liquid outlet pipe is connected with the water bath type gasifier, and the water bath type gasifier is connected with the natural gas welding and conveying pipeline through a gasification conveying pipeline, so that a synergist for improving the oxygen flame temperature of the natural gas is added into the final product Dewar bottle.
5. 5. The method of claim 4, wherein the additive flow valve and the additive flowmeter are installed on a gasification conveying pipeline, the natural gas welding conveying pipeline is provided with a natural gas flow valve and a natural gas flowmeter, and the additive flow valve, the additive flowmeter, the natural gas flow valve and the natural gas flowmeter are electrically connected with the PLC.

Description

Synergist for improving oxygen flame temperature of natural gas, preparation method, adding equipment and adding method thereof Technical Field The invention relates to the technical field of synergists for improving the temperature of natural gas oxygen flame, in particular to a synergist for improving the temperature of natural gas oxygen flame, a preparation method, and an adding device and an adding method thereof. Background Because the environment-friendly concept is continuously in depth in the recent year, the safety consciousness is continuously enhanced, and the existing flame cutting fuel gas in the field gradually replaces and advances natural gas with better safety and environmental protection by taking propane and acetylene as main welding gases. Because the natural gas has lower oxygen flame temperature, the metal welding machine is suitable for cutting metal materials with smaller thickness, and the thicker metal materials can also use propane and acetylene, and can not replace acetylene to carry out metal welding. In order to solve the problems of applicability of natural gas as metal welding gas in flame cutting and welding of various metals and safety and environmental protection in the production and use processes, the natural gas environmental protection type synergistic additive needs to be researched and developed. Meanwhile, the common natural gas synergistic adding mode at the present stage is produced by using a gas-liquid mixing mode of filling gaseous natural gas with a liquid synergistic agent at normal temperature, the principle is that an additive is intermittently sprayed into the natural gas in a form of tiny liquid drops through a filling pump, the tiny liquid drops are driven to be mixed by means of natural gas flow, the mixing uniformity of the mixing mode is required to be improved, the unit heat value and the combustion rate of the mixed natural gas cannot be optimized, metal cutting with more than 400mm can not be carried out instead of propane, metal welding can not be carried out instead of acetylene, and the liquid additive is easy to settle and wall-hanging in long-distance pipe transportation. Therefore, aiming at the defects of the prior art, it is necessary to provide a synergist for improving the oxygen flame temperature of natural gas, a preparation method, and an adding device and an adding method thereof to solve the defects of the prior art. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a synergist for improving the oxygen flame temperature of natural gas, a preparation method, an adding device and an adding method thereof, wherein the synergist for improving the oxygen flame temperature of natural gas can realize stable mixing, improve the unit combustion heat value and the combustion rate at the same time, improve the oxygen flame temperature to over 3200 ℃, cut and weld at a higher speed, and can be filled into liquefied natural gas for liquid mixing under the environment of-160 ℃, and the liquefied natural gas can directly enter a welding and cutting working condition after being gasified. The above object of the present invention is achieved by the following means. The synergist for raising the oxygen flame temperature of the natural gas comprises the following components in percentage by mass of 3% of ferrocene, 1% of tetrahydrofuran, 2% of aluminum sec-butoxide, 70% of pentane and 24% of propadiene. Specifically, the preparation method of the synergist for improving the oxygen flame temperature of the natural gas comprises the following steps: S1, preparing a ferrocene solution, namely injecting 3% of ferrocene into a mixed Dewar bottle, injecting 1% of tetrahydrofuran into the mixed Dewar bottle, and diluting and dissolving the ferrocene to obtain the ferrocene solution; s2, preparing a combustion rate synergistic solution, and injecting 2% of aluminum sec-butoxide into a mixed Dewar flask to obtain the combustion rate synergistic solution; s3, preparing a heat value rate synergistic solution, and injecting 70% of pentane into a mixed Dewar bottle to obtain the heat value rate synergistic solution; S4, preparing a non-low-temperature natural gas synergist, and injecting 24% of allene into a mixed dewar to obtain the non-low-temperature natural gas synergist; S5, preparing a synergist for the oxygen flame temperature of the finished natural gas, and injecting the non-low-temperature natural gas synergist into a liquid nitrogen heat exchange tank for low-temperature cooling, wherein the cooling temperature is 160 ℃ below zero, so as to obtain the synergist for the oxygen flame temperature of the finished natural gas. Specifically, provide a promote interpolation equipment of synergist of natural gas oxygen flame temperature, including finished product dewar, natural gas storage tank, natural gas welding and cutting pipeline, water bath formula vaporizer and PLC controller, the feed liquor end of finish