CN114907898A - Natural gas combustion-supporting additive and preparation method and application thereof - Google Patents
Natural gas combustion-supporting additive and preparation method and application thereof Download PDFInfo
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- CN114907898A CN114907898A CN202210378242.9A CN202210378242A CN114907898A CN 114907898 A CN114907898 A CN 114907898A CN 202210378242 A CN202210378242 A CN 202210378242A CN 114907898 A CN114907898 A CN 114907898A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000003345 natural gas Substances 0.000 title claims abstract description 102
- 239000000654 additive Substances 0.000 title claims abstract description 64
- 230000000996 additive effect Effects 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 72
- 238000005520 cutting process Methods 0.000 claims abstract description 65
- 239000002184 metal Substances 0.000 claims abstract description 49
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims abstract description 40
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims abstract description 18
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims abstract description 16
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 claims abstract description 9
- -1 nitroisooctyl ester Chemical class 0.000 claims abstract description 9
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003949 liquefied natural gas Substances 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000012071 phase Substances 0.000 claims description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract description 22
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 abstract description 11
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 abstract description 11
- 239000001294 propane Substances 0.000 abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 230000036284 oxygen consumption Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/16—Hydrocarbons
- C10L1/1608—Well defined compounds, e.g. hexane, benzene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/182—Organic compounds containing oxygen containing hydroxy groups; Salts thereof
- C10L1/1822—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
- C10L1/1824—Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1852—Ethers; Acetals; Ketals; Orthoesters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/185—Ethers; Acetals; Ketals; Aldehydes; Ketones
- C10L1/1857—Aldehydes; Ketones
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/22—Organic compounds containing nitrogen
- C10L1/23—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites
- C10L1/231—Organic compounds containing nitrogen containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites nitro compounds; nitrates; nitrites
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/30—Organic compounds compounds not mentioned before (complexes)
- C10L1/305—Organic compounds compounds not mentioned before (complexes) organo-metallic compounds (containing a metal to carbon bond)
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2270/00—Specifically adapted fuels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to a natural gas combustion-supporting additive, a preparation method and application thereof, and belongs to the technical field of metal cutting. The additive comprises the following components in percentage by mass based on 100 percent of the total mass of the additive: 3-27.5% of methyl tert-butyl ether, 5-40% of acetone, 5-15% of butanone, 3-10% of methyl ethyl ketone, 10-25% of methanol, 10-36% of cyclopentane, 1-2.5% of ferrocene and 2-5% of nitroisooctyl ester. The additive can obviously improve the combustion temperature and the combustion speed of natural gas, and is not easy to corrode and block a pipeline valve; the natural gas metal cutting gas obtained by injecting the natural gas combustion-supporting additive into the natural gas has the advantages of small flame, stable flame frequency and wavelength, quick preheating and high cutting quality, can effectively replace acetylene and propane for metal flame cutting, reduces the oxygen consumption and carbon dioxide emission while reducing the use cost, and improves the safety and the environmental protection.
Description
Technical Field
The invention relates to a natural gas combustion-supporting additive, a preparation method and application thereof, and belongs to the technical field of metal cutting.
Background
At present, cutting gas is needed to be used in a large amount in a steel blanking process in the shipbuilding field, the influence of the external temperature on acetylene gas and propane gas in the existing industrial cutting gas is large in use, the gas flow in winter is unstable, and the specific gravity of the propane gas to the air is 1.3: 1, the explosion-proof material is used in semi-closed spaces such as a cabin, has serious potential safety and environmental protection hazards, and has similar explosion accidents in a plurality of shipyards.
Natural gas has been introduced into production in recent years as a clean fuel. The natural gas is stable in supply, and is far superior to propane and acetylene in the aspects of safety, environmental protection, cost and the like, but because the combustion speed of the natural gas is low, the problems of low ignition flame temperature, short cutting front flame and the like exist, the natural gas cannot be directly used as industrial cutting gas, combustion-supporting additives are usually added in the prior art, the additives are mixed with the natural gas according to a certain proportion, the original cutting torch is unchanged, and a special cutting nozzle is matched, so that the flame temperature of the natural gas is improved.
The natural gas combustion-supporting additive existing in the existing market is easy to corrode a natural gas pipeline, and has great potential safety hazard. Some brands of additives are easy to generate solid precipitates to block pipeline valves, and some brands of additives are poor in volatility, cannot be well mixed with natural gas, and liquid flows out of pipelines.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a natural gas combustion-supporting additive.
The invention also aims to provide a preparation method of the natural gas combustion-supporting additive.
The invention also aims to provide application of the natural gas combustion-supporting additive.
In order to achieve the purpose of the invention, the following technical scheme is provided.
The natural gas combustion-supporting additive comprises the following components in percentage by mass, based on 100% of the total mass of the additive: 3-27.5% of methyl tert-butyl ether, 5-40% of acetone, 5-15% of butanone, 3-10% of methyl ethyl ketone, 10-25% of methanol, 10-36% of cyclopentane, 1-2.5% of ferrocene and 2-5% of nitroisooctyl ester.
The invention relates to a preparation method of a natural gas combustion-supporting additive, which comprises the following specific steps:
sequentially adding methyl tert-butyl ether, acetone, butanone, methyl ethyl ketone, methanol, cyclopentane, ferrocene and nitroisooctyl ester into a mixing container, fully stirring until the components are uniformly mixed, and standing for 24-48 hours to obtain the natural gas combustion-supporting additive.
The invention relates to an application of a natural gas combustion-supporting additive, which is characterized in that the natural gas combustion-supporting additive is injected into natural gas to obtain natural gas metal cutting gas; in the natural gas metal cutting gas, the natural gas combustion-supporting additive accounts for 1.5 parts by weight, and the liquefied natural gas accounts for 98.5 parts by weight.
The specific application method is as follows:
(1) injecting 1.5 parts of natural gas combustion-supporting additive into an LNG tank containing 98.5 parts of liquefied natural gas, and mutually dissolving and standing for 10-15 hours to obtain liquid-phase natural gas metal cutting gas;
(2) converting the liquid-phase natural gas metal cutting gas prepared in the step (1) into gas-phase natural gas metal cutting gas in a mode (L-CNG) of converting liquefied natural gas into compressed natural gas;
(3) and (4) supplying gas to a station for using the natural gas metal cutting gas by using an LNG low-temperature steel cylinder.
Advantageous effects
1. The invention provides a natural gas combustion-supporting additive, wherein methyl tert-butyl ether, ferrocene and nitroisooctyl ester in the additive can obviously improve the combustion temperature of natural gas and accelerate the combustion speed and cutting speed, and the combustion temperature of the natural gas after the combustion-supporting additive is added can reach 3300 ℃; the combustion-supporting additive is uniform and stable in state, is not easy to generate solid precipitates to block a pipeline valve, and is low in corrosion to a natural gas pipeline; good volatility and easy mixing with natural gas.
2. The invention provides a preparation method of a natural gas combustion-supporting additive, which comprises the steps of sequentially adding raw materials of all components into a mixing container, fully stirring until all the components are uniformly mixed, standing for 24-48 hours, and preparing the natural gas combustion-supporting additive; the method is simple and convenient to prepare and is suitable for industrial production.
3. The invention provides an application of a natural gas combustion-supporting additive, which is characterized in that the natural gas combustion-supporting additive is injected into natural gas to obtain natural gas metal cutting gas; the cutting flame of the natural gas metal cutting gas is small, and the flame frequency and the wavelength are stable; when metal is cut, the preheating is fast, the surface section of the notch is flat, the problems of undercut, burning collapse, slag adhering and the like are avoided, tempering is avoided, acetylene and propane can be effectively replaced for flame cutting of the metal, the use cost is reduced, the oxygen consumption and the carbon dioxide emission are reduced, and the safety and the environmental protection are improved.
Detailed Description
The invention will be described in more detail with reference to specific examples, which should not be construed as limiting the scope of the invention.
The reagents and other instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Natural gas (natural gas with 98% methane by mass, Chinese petrochemical);
acetylene gas (purity 99%, Handan City Dong Cycloacetylene gas works);
propane gas (purity 95%, Handan City Dong Cycloacetylene gas works);
(1) preheating and punching test:
a No. 3 nozzle of a 100-type gun is adopted, and a preheating punching test is carried out on a Q235 steel plate with the thickness of 30 mm;
(2) testing numerical control cutting speed: selecting a Q235 steel plate with the thickness of 30mm, and cutting the steel plate to the length of 5 m; observing whether tempering occurs during cutting; and judging the cutting quality of the metal cutting gas according to whether the cut surface is smooth or not and whether slag is adhered or not.
(3) Groove forming test: selecting a Q235 steel plate with the thickness of 30mm, wherein the bevel angle is 45 degrees, and the slope length is 5 meters;
(4) testing the maximum flame temperature: the measurement is carried out at a distance of 50cm from the flame using a 311MSCL3+ Raytai infrared thermometer.
(5) Gas cost: propane gas was calculated as a commercial average value of 8 yuan/kg, acetylene gas was calculated as a commercial average value of 18 yuan/kg, and the natural gas metal cutting gas described in examples 1 and 2 was calculated as 9 yuan/m 3 And (4) calculating.
(6) The relative specific gravity of the metal cutting gas and the air is the ratio of the density of the metal cutting gas to the density of the air; the metal cutting gas density is the ratio of gas mass to volume.
(7) Gas consumption: the difference value of the mass change of the metal cutting gas before and after cutting a Q235 steel plate with the length of 5 meters and the thickness of 30 mm; and the oxygen consumption and the carbon dioxide discharge are calculated according to the gas consumption.
Example 1
The natural gas combustion-supporting additive comprises the following components in percentage by mass, based on 100% of the total mass of the additive: 3% of methyl tert-butyl ether, 40% of acetone, 5% of butanone, 3% of methyl ethyl ketone, 10% of methanol, 36% of cyclopentane, 1% of ferrocene and 2% of nitroisooctyl ester.
A preparation method of the natural gas combustion-supporting additive comprises the following specific steps:
adding 3g of methyl tert-butyl ether, 40g of acetone, 5g of butanone, 3g of methyl ethyl ketone, 10g of methanol, 36g of cyclopentane, 1g of ferrocene and 2g of nitroisooctyl ester into a mixing container one by one, fully stirring until the components are uniformly mixed, and standing for 24 hours to obtain the natural gas combustion-supporting additive.
The application of the natural gas combustion-supporting additive is that the natural gas combustion-supporting additive is injected into natural gas to obtain natural gas metal cutting gas;
the specific application method is as follows:
(1) injecting 1.5 parts of natural gas combustion-supporting additive into an LNG tank containing 98.5 parts of liquefied natural gas by a booster pump, mutually dissolving the natural gas combustion-supporting additive and the LNG tank, and standing for 15 hours to obtain liquid-phase natural gas metal cutting gas;
(2) the produced liquid phase natural gas metal cutting gas is converted into gas phase natural gas metal cutting gas by means of converting liquefied natural gas into compressed natural gas (L-CNG).
(3) And (4) supplying gas to a station for using the natural gas metal cutting gas by using an LNG low-temperature steel cylinder.
Example 2
The natural gas combustion-supporting additive comprises the following components in percentage by mass, based on 100% of the total mass of the additive: 27.5% of methyl tert-butyl ether, 5% of acetone, 15% of butanone, 10% of methyl ethyl ketone, 25% of methanol and 10% of cyclopentane; 2.5 percent of ferrocene; 5 percent of nitroisooctyl ester.
The invention relates to a preparation method of a natural gas combustion-supporting additive, which comprises the following specific steps:
adding 27.5g of methyl tert-butyl ether, 5g of acetone, 15g of butanone, 10g of methyl ethyl ketone, 25g of methanol, 10g of cyclopentane, 2.5g of ferrocene and 5g of nitroisooctyl ester into a mixing container one by one, fully stirring until the components are uniformly mixed, and standing for 48 hours to obtain the natural gas combustion-supporting additive.
The application of the natural gas combustion-supporting additive in the embodiment is to inject the natural gas combustion-supporting additive into natural gas to obtain natural gas metal cutting gas;
the specific application method is as follows:
(1) injecting 1.5 parts of natural gas combustion-supporting additive into an LNG tank containing 98.5 parts of liquefied natural gas by a booster pump, mutually dissolving the natural gas combustion-supporting additive and the LNG tank, and standing for 10 hours to obtain liquid-phase natural gas metal cutting gas;
(2) converting the produced liquid phase natural gas metal cutting gas into gas phase natural gas metal cutting gas by means of converting liquefied natural gas into compressed natural gas (L-CNG);
(3) and (4) supplying gas to a station for using the natural gas metal cutting gas by using an LNG low-temperature steel cylinder.
Comparative example 1
Comparative example 1 natural gas without injected combustion-supporting additive was used as the metal cutting gas.
Comparative example 2
Comparative example 2 used propane gas as the metal cutting gas.
Comparative example 3
Comparative example 3 acetylene gas was used as the metal cutting gas.
The use performance of the natural gas metal cutting gas added with the combustion-supporting additive in example 1 and the natural gas metal cutting gas not added with the combustion-supporting additive in comparative example 1 was examined through the test of preheating and punching, numerical control cutting speed, flame straightening and beveling time of the steel plate, and the results are shown in table 1, the preheating punching time is shortened from 45 seconds to 11 seconds, the numerical control cutting speed of the 30mm steel plate is increased from 300 mm/min to 450 mm/min, the flame straightening and beveling speed is improved to be equivalent to that of the common metal cutting gas acetylene gas in the prior art under the same condition, which shows that the natural gas combustion-supporting additive can obviously improve the flame temperature of natural gas, shorten the preheating and punching time and improve the metal cutting speed, thereby increasing the working efficiency.
Table 1 comparison of the use properties of natural gas metal cutting gas for example 1 and comparative example 1
The metal cutting gas prepared in the examples 1 to 2 is lighter in specific gravity than air, is not easy to gather even if a small amount of gas leaks, and can quickly float, and the metal cutting gas is lighter than propane gas in the comparative example 2 and acetylene gas in the comparative example 3, and the diffusing speed after leakage is higher than that of propane and acetylene, so that the safety is higher; the maximum flame temperature of the metal cutting gas in the embodiments 1-2 can reach 3300 ℃, is higher than that of the metal cutting gas in the comparative examples 2 and 3, is not tempered in the using process, is high in cutting quality, has carbon dioxide emission far lower than that of propane and acetylene, and is good in environmental protection benefit.
TABLE 2 Performance testing of metal cutting gases for examples 1-2 and comparative examples 2-3
Claims (5)
1. A natural gas combustion-supporting additive is characterized in that: based on 100 percent of the total mass of the additive, the additive comprises the following components in percentage by mass:
2. a process for the preparation of a natural gas comburent additive according to claim 1, characterized in that: the method comprises the following specific steps:
sequentially adding methyl tert-butyl ether, acetone, butanone, methyl ethyl ketone, methanol, cyclopentane, ferrocene and nitroisooctyl ester into a mixing container, stirring until the components are uniformly mixed, and standing for 24-48 hours to obtain the natural gas combustion-supporting additive.
3. Use of a natural gas comburant additive according to claim 1, wherein: the application is to inject the natural gas combustion-supporting additive into the natural gas to obtain the natural gas metal cutting gas.
4. The use of a natural gas comburent additive according to claim 3, wherein: in the natural gas metal cutting gas, the natural gas combustion-supporting additive accounts for 1.5 parts by weight, and the liquefied natural gas accounts for 98.5 parts by weight.
5. Use of a natural gas comburant additive according to claim 3 or 4, wherein: the specific application method is as follows:
(1) injecting a natural gas combustion-supporting additive into an LNG tank containing liquefied natural gas, and mutually dissolving and standing the natural gas combustion-supporting additive and the LNG tank for 10-15 hours to obtain liquid-phase natural gas metal cutting gas;
(2) converting the liquid-phase natural gas metal cutting gas into gas-phase natural gas metal cutting gas in a mode of converting liquefied natural gas into compressed natural gas;
(3) and (4) supplying gas to a station for using the natural gas metal cutting gas by using an LNG low-temperature steel cylinder.
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