CN1302093C - Industrial fuel gas for metal cutting and welding - Google Patents
Industrial fuel gas for metal cutting and welding Download PDFInfo
- Publication number
- CN1302093C CN1302093C CNB2005100204423A CN200510020442A CN1302093C CN 1302093 C CN1302093 C CN 1302093C CN B2005100204423 A CNB2005100204423 A CN B2005100204423A CN 200510020442 A CN200510020442 A CN 200510020442A CN 1302093 C CN1302093 C CN 1302093C
- Authority
- CN
- China
- Prior art keywords
- dme
- gas
- present
- welding
- methyl alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The present invention discloses industrial fuel gas used for cutting and welding metal. An additive agent is added to a steel cylinder, and dimethyl ether is injected into the steel cylinder according to the following weight percentage: 40 to 99.9% of dimethyl ether and the additive agent as rest; the industrial fuel gas is prepared. The additive agent is selected from one kind of following fuel or a composition of arbitrary several kinds according to the arbitrary proportion: liquefied petroleum gas, propane, butane, propene, pentane, white oil, methanol and ethanol. The present invention has the advantages of good combustibility, safety, environmental protection and high temperature of combustion flame. Compared with acetylene gas, the present invention is not easily exploded, and the present invention has more convenient and safer storage, transportation, use, management, etc. No environmental pollution occurs, the present invention is harmless to the operation user's body, the preheating speed and the cutting speed are high, the quality of a welded welding seam is good, the oxygen consumption is little, the work efficiency is effectively improved, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of ether hydrocarbon fuel gas, particularly a kind of is the industrial combustion gas that main raw material is used for metal cutting and welding with the dme.
Background technology
Since acetylene be very inflammable, explosive, be difficult to the gas storing and transport, therefore traditional metal cutting and welding are mainly dissolved acetylene with industrial combustion gas.Dissolved acetylene is raw material production with the calcium carbide, and the power consumption in the production process is high and bring corresponding pollution.Though its security has had more significantly improvement behind the employing dissolved acetylene, still has many drawbacks---energy consumption height, pollution weight, explosive, cost height, transportation and storage inconvenience, service requirements is very strict.In recent years, just because of in production, transportation and the use of dissolved acetylene a lot of pernicious blasts and fire failure taking place.Therefore, both uneconomical, very easily environment and society are brought certain harm again.
Along with the develop rapidly of modernization industry, metal cutting and welding day by day increase with the consumption of industrial combustion gas.Though China has released the infant industry combustion gas of replace ethine gas at present, for example: application number is 99126268.9 " SE-6 environmental protection and energy saving industrial combustion gas ", it be a kind of with propane, third rare etc. be main ingredient, and come the synergic industrial combustion gas by adding oil, and the liquefied petroleum gas (LPG) that replaces dissolved acetylene, but they are not too satisfactory aspect welding property.
Summary of the invention
The purpose of this invention is to provide a kind of is the industrial combustion gas that main raw material is used for metal cutting and welding with the dme.This combustion gas has good incendivity, security, the feature of environmental protection and very high combustion flame temperature, compare with acetylene gas, it is not easy to blast, store, transport, use and link such as management more convenient and safe, non-environmental-pollution not only, and harmless to the person's of manipulating health, preheating and cutting speed in feet per minute are fast, can guarantee the quality of welded seam, oxygen consumption is few, can improve work efficiency and reduce cost.
Concrete technical scheme of the present invention is as follows:
Industrial combustion gas is used in a kind of metal cutting and welding, it is characterized in that: it is that by following weight percent dme to be injected additive formulated:
Dme 40～99.9%
And the additive of surplus
Described additive is a kind of or several combinations by arbitrary proportion arbitrarily in the following fuel: oil liquefied gas, propane, butane, propylene, pentane, light oil, methyl alcohol, ethanol.
Industrial combustion gas is used in described metal cutting and welding, and it is that by following weight percent dme to be injected oil liquefied gas formulated:
Dme 99.9%, oil liquefied gas 0.1%.
Industrial combustion gas is used in described metal cutting and welding, and it is dme to be injected butane and propylene is formulated by following weight percent:
Dme 80%, butane 10%, propylene 10%.
Industrial combustion gas is used in described metal cutting and welding, and it is dme to be injected oil liquefied gas and methyl alcohol is formulated by following weight percent:
Dme 70%, oil liquefied gas 10%, methyl alcohol 20%.
Industrial combustion gas is used in described metal cutting and welding, and it is dme to be injected light oil and methyl alcohol is formulated by following weight percent:
Dme 60%, light oil 20%, methyl alcohol 20%.
Industrial combustion gas is used in described metal cutting and welding, and it is that by following weight percent dme to be injected propane, butane, propylene and pentane combined additive formulated:
Dme 50%, propane 15%, butane 10%, propylene 15%, pentane 10%.
Industrial combustion gas is used in described metal cutting and welding, and it is that by following weight percent dme to be injected propylene, pentane, light oil, methyl alcohol, ethanol, oil liquefied gas, propane and butane combined additive formulated:
Dme 40%, propylene 5%, pentane 10%, light oil 8%, methyl alcohol 10%, ethanol 12%, oil liquefied gas 5%, propane 5%, butane 5%.
The preparation method of industrial combustion gas of the present invention comprises following processing step:
The generation of A, dme
Method one: with methyl alcohol or thick methyl alcohol is raw material, at zeolite catalyst or γ-Al
2O
3When catalyzer exists, under 200～400 ℃ condition, carry out dehydration reaction and generate thick dme, get dme through rectifying separation again.
Method two: with containing CO and H
2Synthetic gas, special-purpose catalyst previous step reaction generate thick dme and further rectifying separation be the output dme.
The generation of B, product
In steel cylinder,, then dme is injected steel cylinder and promptly get product earlier by being metered into additive.
The invention has the advantages that:
1, the performance of dimethyl ether fuel is more than acetylene fuel safety, its not only can be as acetylene easy blasting, and store, transportation and use all more safer than acetylene and liquefied petroleum gas (LPG);
2, owing to contain micro-phosphide in the acetylene gas, these poisonous substances are all from calcium carbide, though the standard HG-206-65 of national dissolved acetylene gas regulation, phosphuret-(t)ed hydrogen content should be less than or equal to 0.06% (volume) in the acetylene gas, hydrogen sulfide content should be less than or equal to 0.1% (volume), but the quality of the metal welding seam that they are to environment, user and be cut, weld still has disadvantageous effect, and dme does not contain these nuisances, so it is all harmless to the quality of environment, user and metal welding seam;
3, acetylene and liquefied petroleum gas (LPG) (as propane, butane etc.) are difficult to degrade in atmosphere, and dme is easier to degraded; And the home and abroad proves all that to the toxicity test of dme dme belongs to the compound of " actual nontoxic level ", and dme is widely used as the spraying propellent of daily cosmetics and medicine.Fully demonstrating dme is to belong to and eco-friendly metal cutting and welding industrial combustion gas;
4, dme acts as a fuel when being used for cutting and welding, and its preheating and cutting speed in feet per minute surfacing, no dross, oxygen consumption fast, that work is cut is few, has improved work efficiency greatly and has reduced cost; Joint-cutting surfacing, no dross do not need to carry out artificial scarfing cinder etc. again after the cutting, save oxygen depletion, dme is more cheap than the acetylene gas of identical thermal value, saves labor hour etc.
5, in the process of producing dme, its industrial energy consumption is low more than the energy consumption of producing calcium carbide and calcium carbide production dissolved acetylene, and environment is not polluted substantially, belongs to the production process of cleaning.
Embodiment
Embodiment 1
The oil liquefied gas of 0.05Kg is added in the steel cylinder, and the dme of the 49.95Kg that reinjects promptly makes the industrial combustion gas product that contains dme 99.9%, oil liquefied gas 0.1%.
Described dme is to be raw material with methyl alcohol, when zeolite catalyst exists, carries out dehydration reaction and generate thick dme under 200～400 ℃ condition, gets dme through rectifying separation again.
Embodiment 2
Successively the butane of 0.05Kg, the propylene of 0.05Kg are added in the steel cylinder, the dme of the 40Kg that reinjects promptly gets the industrial combustion gas product that contains dme 80%, butane 10%, propylene 10%.
Described dme is to be raw material with thick methyl alcohol, at γ-Al
2O
3When catalyzer exists, under 200～400 ℃ condition, carry out dehydration reaction and generate thick dme, get dme through rectifying separation again.
Embodiment 3
Successively 0.05Kg oil liquefied gas, 0.10Kg propane are added in the steel cylinder, the 35Kg dme that reinjects promptly gets the industrial combustion gas product that contains dme 70%, oil liquefied gas 10%, propane 20%.
Described dme is to be raw material with methyl alcohol, at γ-Al
2O
3When catalyzer exists, under 200～400 ℃ condition, carry out dehydration reaction and generate thick dme, get dme through rectifying separation again.
Embodiment 4
Successively 0.10Kg light oil, 0.10Kg methyl alcohol are added in the steel cylinder, the 30Kg dme that reinjects promptly gets the industrial combustion gas product that contains dme 60%, light oil 20%, methyl alcohol 20%.
Described dme is to be raw material with thick methyl alcohol, when zeolite catalyst exists, carries out dehydration reaction and generate thick dme under 200～400 ℃ condition, gets dme through rectifying separation again.
Embodiment 5
Successively 0.075Kg propane, 0.05Kg butane, 0.075Kg propylene, 0.05Kg pentane are added in the steel cylinder, the 25Kg dme that reinjects promptly gets the industrial combustion gas product that contains dme 50%, propane 15%, butane 10%, propylene 15%, pentane 10%.
Described dme is to be raw material with methyl alcohol, when zeolite catalyst exists, carries out dehydration reaction and generate thick dme under 200～400 ℃ condition, gets dme through rectifying separation again.
Embodiment 6
Successively 0.025Kg propylene, 0.05Kg pentane, 0.04Kg light oil, 0.05Kg methyl alcohol, 0.06Kg ethanol, oil liquefied gas 0.025kg, propane 0.025kg, butane 0.025kg are added in the steel cylinder, the 20Kg dme that reinjects promptly gets the industrial combustion gas product that contains dme 40%, propylene 5%, pentane 10%, light oil 8%, methyl alcohol 10%, ethanol 12%, oil liquefied gas 5%, propane 5%, butane 5%.
Described dme is with containing CO and H
2Synthetic gas, special-purpose catalyst previous step reaction generate thick dme and further rectifying separation be the output dme.
Embodiment 7 performance comparison tests
Several industrial combustion gas performance comparison data sheet
| Project | Acetylene | Liquefied petroleum gas (LPG) | Dme | Sweet natural gas |
| Molecular formula | C 2H 2 | C 3H 8 | C 2H 6O | CH 4 |
| Fusing point, ℃ | -80.75 | -187.69 | -141.49 | -182.48 |
| Boiling point, ℃ | -84 (sublimation points) | -42.04 | -24.9 | -161.49 |
| Emergent pressure, MPa | 6.14 | 4.25 | 5.37 | 46 |
| Critical temperature, ℃ | 35.17 | 96.67 | 126.95 | -82.57 |
| Fluid density (25 ℃), Kg/m 3 | 0.377 | 0.493 | 0.67 | 0.331 |
| Gas density, Kg/m 3(21.1℃ latm，101.325kPa | 1.078 | 1.826 | 1.908 | 10.644 |
| The high limit of limits of explosion lower bound volume % volume % in the air | 2.5 80.0 | 2.1 9.5 | 3.4 7 | 5 15 |
| Natural temperature, ℃ | 305 | 450 | 235 | 600 |
| Flash-point, ℃ | - | -104.4 | -41.1 | -187.8 |
| Gaseous combustion heat (25 ℃) KJ/m 3 | 51983.1 | 85994 | 55017.18 | 32205.9 |
| Theoretical combustion temperature in the air, ℃ | 2250 | 2055 | 2250 | |
| The theoretical combustion air consumption, m 3/Kg | 10.25 | 11.32 | 6.96 | 13.33 |
| Flame temperature (during neutral flame), ℃ | ～3100 | ～2520 | ～3200 | 2540 |
| Pressure MPa in the time of 60 ℃ | 1.92 | 1.35 | - |
As can be known from the above table, though the combustion heat of dme is not the highest, but because of itself contains oxygen, required oxygen (theoretical air requirement) is much lower more than other fuel during its burning, so the theoretical combustion temperature of dme and flame temperature are all higher with industrial fuel (acetylene and liquefied petroleum gas (LPG) etc.) than metal cutting that adopts at present and welding, be the industrial fuel of good metal cutting and welding usefulness.
Claims (2)
1, industrial combustion gas use in a kind of metal cutting and welding, it is characterized in that: it is by weight percentage 70% dme to be injected the methyl alcohol of 10% oil liquefied gas and 20% or by weight percentage that the methyl alcohol of the light oil of 60% dme injection 20% and 20% is formulated.
2, the preparation method of industrial combustion gas according to claim 1 is characterized in that: comprise following processing step:
The generation of A, dme
With methyl alcohol or thick methyl alcohol is raw material, at zeolite catalyst or γ-Al
2O
3When catalyzer exists, under 200～400 ℃ condition, carry out dehydration reaction and generate thick dme, get dme through rectifying separation again;
The generation of B, product
In steel cylinder,, then dme is injected steel cylinder and promptly get product earlier by being metered into additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100204423A CN1302093C (en) | 2005-03-03 | 2005-03-03 | Industrial fuel gas for metal cutting and welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100204423A CN1302093C (en) | 2005-03-03 | 2005-03-03 | Industrial fuel gas for metal cutting and welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1667096A CN1667096A (en) | 2005-09-14 |
| CN1302093C true CN1302093C (en) | 2007-02-28 |
Family
ID=35038380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100204423A Expired - Fee Related CN1302093C (en) | 2005-03-03 | 2005-03-03 | Industrial fuel gas for metal cutting and welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1302093C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590184C (en) * | 2006-06-29 | 2010-02-17 | 郑长同 | Ether alcohol kind metal welding and cutting gas and its preparation method |
| CN101089152B (en) * | 2007-07-10 | 2010-07-28 | 熊世平 | Industrial fuel gas for metal welding and cutting in high efficiency and low consumption |
| CN101220307B (en) * | 2008-01-23 | 2010-12-01 | 四川泸天化股份有限公司 | Novel dimethyl ether acetylene mix welding gas |
| WO2011094943A1 (en) * | 2010-02-05 | 2011-08-11 | 秦皇岛远舟工业气体有限公司 | Natural gas additive used for cutting |
| CN102492503B (en) * | 2011-11-25 | 2014-06-18 | 新奥新能(北京)科技有限公司 | Novel industrial cutting gas with dimethyl ether as main component |
| CN103789057B (en) * | 2013-12-31 | 2016-01-13 | 濮阳市军胜实业有限公司 | Novel gas liquefied gas |
| CN104130813A (en) * | 2014-08-19 | 2014-11-05 | 叶万久 | Novel clean high-energy cutting welding gas |
| CN112195049A (en) * | 2020-09-01 | 2021-01-08 | 宁波盾科新材料有限公司 | Welding gas mixture without oxygen combustion supporting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6086195A (en) * | 1983-10-17 | 1985-05-15 | Idemitsu Petrochem Co Ltd | Fuel gas composition |
| KR20020071187A (en) * | 2001-03-05 | 2002-09-12 | 에스케이 주식회사 | Dimethyl Ether-Liquefied Petroleum Gas mixed fuel composition and method for providing the same |
| CN1388228A (en) * | 2001-05-30 | 2003-01-01 | 方远泽 | Methyl fuel gas and its production process |
| CN1468942A (en) * | 2003-06-15 | 2004-01-21 | 乐清市金佩克新能源有限公司 | Metal welding and cutting ether-hydrocarbon gas |
| CN1570043A (en) * | 2004-05-10 | 2005-01-26 | 徐维昕 | Composite fuel |
-
2005
- 2005-03-03 CN CNB2005100204423A patent/CN1302093C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6086195A (en) * | 1983-10-17 | 1985-05-15 | Idemitsu Petrochem Co Ltd | Fuel gas composition |
| KR20020071187A (en) * | 2001-03-05 | 2002-09-12 | 에스케이 주식회사 | Dimethyl Ether-Liquefied Petroleum Gas mixed fuel composition and method for providing the same |
| CN1388228A (en) * | 2001-05-30 | 2003-01-01 | 方远泽 | Methyl fuel gas and its production process |
| CN1468942A (en) * | 2003-06-15 | 2004-01-21 | 乐清市金佩克新能源有限公司 | Metal welding and cutting ether-hydrocarbon gas |
| CN1570043A (en) * | 2004-05-10 | 2005-01-26 | 徐维昕 | Composite fuel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1667096A (en) | 2005-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1302093C (en) | Industrial fuel gas for metal cutting and welding | |
| CN103275769B (en) | High-cleanness environment-friendly alcohol ether fuel for car | |
| CN1824738A (en) | Preparation method of high efficiency alcohol base gasoline fuel additive | |
| CN1206039A (en) | Acetylene substituting high-energy fuel gas and its additive | |
| CN100392051C (en) | Energy-saving environmental protection type dimethylether industrial cutting gas | |
| CN102492503A (en) | Novel industrial cutting gas with dimethyl ether as main component | |
| CN103468339B (en) | Natural gas combustion synergist, natural gas mixture containing same, and preparation method of natural gas mixture | |
| CN104830381A (en) | Clean fuel for CFMV (Clean Fuel Based on Methanol for Motor Vehicles) vehicles and preparation method thereof | |
| CN104877722B (en) | Natural gas metal cutting gas | |
| CN101089152B (en) | Industrial fuel gas for metal welding and cutting in high efficiency and low consumption | |
| CN107099347B (en) | A kind of ether diesel oil of clean and environmental protection and preparation method thereof | |
| CN100547060C (en) | A kind of welding industrial combustion gas of environmental protection and energy saving | |
| JP2011526235A (en) | Stockpile of methanol and / or dimethyl ether for fuel and energy storage | |
| CN101691504A (en) | Composite methanol gasoline | |
| KR20090066016A (en) | Composition of environmentally friendly alternative fuel and method thereof | |
| CN101033429A (en) | Active ion welding gas | |
| CN102229826A (en) | Metal cutting gas | |
| KR100866019B1 (en) | Dimethyl Ether-Liquefied Petroleum Gas mixed fuel composition and method for preparing the same | |
| CN103361145A (en) | Strengthened hydrocarbon to be input into torch and burnt together with oxygen | |
| CN1145399A (en) | Liquid spectrum gas for replacing acetylene gas | |
| CN107384492A (en) | Anti- haze environmental protection diesel oil combustion improver | |
| CN1417305A (en) | High-energy composit fuel and its special burner | |
| CN1260382A (en) | High-energy light-weight mixed gas | |
| CN1253167A (en) | Metallic welding-cutting gas prepared from petroleum mixture and its preparing process | |
| KR100837621B1 (en) | Dimethyl Ether-Liquefied Petroleum Gas mixed fuel composition and method for providing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070228 Termination date: 20120303 |