CN102492503B - Novel industrial cutting gas with dimethyl ether as main component - Google Patents
Novel industrial cutting gas with dimethyl ether as main component Download PDFInfo
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- CN102492503B CN102492503B CN201110381821.0A CN201110381821A CN102492503B CN 102492503 B CN102492503 B CN 102492503B CN 201110381821 A CN201110381821 A CN 201110381821A CN 102492503 B CN102492503 B CN 102492503B
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Abstract
The invention discloses novel industrial cutting gas with dimethyl ether as a main component. The novel industrial cutting gas comprises (but not limited to) the following components in percentage by mass: 60-99.99% of the dimethyl ether, 0.01-40% of additives and the like, wherein the additive is prepared from tert-butylferrocene, diethyl ether, aromatic hydrocarbon, solvent oil No.6, tert-butyl alcohol and potassium permanganate according to a certain proportion. Auxiliary gas can also be added into the cutting gas and is one or some of acetylene, propane, propylene, butane and butylene. The novel industrial cutting gas disclosed by the invention presents strong advantages in the aspects of economy, safety, environment friendliness and cutting performance.
Description
Technical field
The present invention relates to a kind of ether hydrocarbon fuel gas, particularly a kind of infant industry cutting gas take dme as main component.
Background technology
The industrial cutting gas using in the metal welding course of processing of China is at present mainly acetylene, acetylene adds as a kind of traditional metal welding the combustion gas using in process, there is flame temperature high, the advantages such as hot-work effect is remarkable, but also have obvious shortcoming, acetylene be a kind of inflammable, explosive, be difficult to store and transportation gas.And in preparation process, consume higher energy and can cause serious environmental pollution.Actively advocate at present and reduce discharging energy-conservation angle from country, acetylene industry inadaptable continuation develops.
The infant industry cutting gas that substitutes acetylene is mainly take propane and liquefied petroleum gas (LPG) etc. as main ingredient, the wherein cutting gas take propane as main ingredient, have clear improvement compared with acetylene at the aspect such as safety and environmental protection, but it is superior that propane flame temperature and cutting speed in feet per minute are not so good as acetylene, and propane gas source is single, in use oxygen-consumption is high, is unfavorable for safety operation.
Along with the rise of dimethylether industrial, dme demonstrates stronger advantage as cutting gas: dme is the toxic substance such as phosphine containing and hydrogen sulfide not, and self is containing oxygen, and sufficient combustion, is desirable clean energy; Dme is difficult for blasting, storing and use safety; Dme is cheap, compared with other industrial cutting gas, very competitive.
Because dme calorific value is lower, use merely dme to have the slow-footed problem of punch-cuts as cutting gas, therefore must add best additive, improve DME combustion temperature and combustionvelocity.
Summary of the invention
The object of the invention is to improve above-mentioned deficiency, do combustion gas take dme as main component, add additive to be mixed with use safety, energy-conserving and environment-protective, cheap infant industry cutting gas.
Technical scheme of the present invention is: a kind of infant industry cutting gas take dme as main component, and including but not limited to dme and additive etc., each constituent mass per-cent is:
Dme: 60～99.99%,
Additive: 0.01%～40%.
The each constituent mass per-cent of cutting gas is preferably:
Dme: 80～99.99%,
Additive: 0.01%～20%.
Cut the each constituent mass per-cent of gas more preferably:
Dme: 90～99.99%,
Additive: 0.01%～10%.
Described additive is made by a certain percentage by tertiary butyl ferrocene, ether, aromatic hydrocarbon oil, 6# solvent oil, the trimethyl carbinol, potassium permanganate, and additive composition (wt%) is as follows:
Tertiary butyl ferrocene: 1%～30%, ether: 10%～80%, aromatic hydrocarbon oil: 1%～20%, 6# solvent oil: 5%～60%, the trimethyl carbinol: 1%～40%, potassium permanganate: 0%～20%.
Preferred additive is composed as follows: tertiary butyl ferrocene: 1%～20%, and ether: 40%～80%, aromatic hydrocarbon oil: 1%～10%, 6# solvent oil: 5%～30%, the trimethyl carbinol: 1%～20%, potassium permanganate: 0%～10%.
Additive forms more preferably: tertiary butyl ferrocene: 1%～10%, and ether: 60%～80%, aromatic hydrocarbon oil: 1%～5%, 6# solvent oil: 10%～30%, the trimethyl carbinol: 5%～10%, potassium permanganate: 0%～5%.
More preferably technical scheme of the present invention is: a kind of infant industry cutting gas take dme as main component, including but not limited to dme and additive etc., can also add assist gas.
Common each constituent mass per-cent is:
Dme: 60～99%,
Additive: 0.01%～39%,
Assist gas: 0.01～39%.
The each constituent mass per-cent of preferred cutting gas is:
Dme: 80～99%,
Additive: 0.01%～19%,
Assist gas: 0.01～19%.
Described assist gas is one or more of acetylene, propane, propylene, butane, pentane, and composition (wt%) is as follows: acetylene: 20%～100%; Propane: 0%～60%; Propylene: 0%～60%; Butane: 0%～40%; Pentane: 0%～40%.
Wherein preferred assist gas is composed as follows: acetylene: 50%～100%; Propane: 0%～50%; Propylene: 0%～50%; Butane: 0%～20%; Pentane: 0%～20%.
In the described infant industry cutting gas that adds assist gas, additive is made by a certain percentage by tertiary butyl ferrocene, ether, aromatic hydrocarbon oil, 6# solvent oil, the trimethyl carbinol, potassium permanganate, and additive composition (wt%) is as follows:
Tertiary butyl ferrocene: 1%～30%, ether: 10%～80%, aromatic hydrocarbon oil: 1%～20%, 6# solvent oil: 5%～60%, the trimethyl carbinol: 1%～40%, potassium permanganate: 0%～20%.
Preferred additive is composed as follows: tertiary butyl ferrocene: 1%～20%, and ether: 40%～80%, aromatic hydrocarbon oil: 1%～10%, 6# solvent oil: 5%～30%, the trimethyl carbinol: 1%～20%, potassium permanganate: 0%～10%.
Additive forms more preferably: tertiary butyl ferrocene: 1%～10%, and ether: 60%～80%, aromatic hydrocarbon oil: 1%～5%, 6# solvent oil: 10%～30%, the trimethyl carbinol: 5%～10%, potassium permanganate: 0%～5%.
The compound method of described infant industry cutting gas and additive is:
The preparation of A, additive: under normal temperature and pressure, each raw material is according to dosage added to modulation kettle, continuously stirring 2 hours, obtains additive.
The preparation of B, industrial cutting gas: first according to dosage get in additive injection liquid liquefied oil gas empty bottle, selectively again by gas filling station by assist gas injection liquid liquefied oil gas empty bottle (if preparation is containing the cutting gas of assisted gas, do not need this step), finally by gas filling station by dme injection liquid liquefied oil gas empty bottle, valve-off, fully mixes the preparation that completes infant industry cutting gas.
The present invention has the following advantages:
1, the energy structure of China is " rich coal, few oil, have gas ", and development dme can be brought into play the advantage of China, reduces the demand to crude oil.Therefore dme wide material sources, cheap.
2, compare the limits of explosion of acetylene: 2.5%～80.0%, the limits of explosion of dme is 3.4%～17%: explosive range is little, storing and use safety;
3, dme is a kind of super clean energy, and the not toxic substance such as phosphine containing and hydrogen sulfide, can not cause disadvantageous effect to environment, user and cut metal welding seam.
4, the present invention furthers investigate the flame mechanism of dme, and synergistic effect between the various compositions of additive, by utilizing the activity that additive molecule is good, reduce the activation energy of cutting gas molecule, thereby make flame release of heat more concentrated, reach and improve the cutting combustionvelocity of gas and the object of flame temperature.When industrial cutting gas of the present invention is used for cutting, preheating and cutting speed in feet per minute are fast, and cut surface face is smooth, few without dross, oxygen consumption, and indices is all better than traditional dissolved acetylene gas.
In sum, the infant industry cutting gas take dme as main component of the present invention demonstrates powerful advantage at aspects such as economy, security, the feature of environmental protection and cutting propertys.
Embodiment
The present invention will be further described below, below is only preferred embodiment of the present invention, can not limit scope of the present invention with this.Be every variation of doing according to the present patent application the scope of the claims and modification, all should still remain within the scope of the patent.
Embodiment mono-:
Additive configuration proportion measures by following: tertiary butyl ferrocene 10g, ether 800g, aromatic hydrocarbon oil (source: Beijing sky Cole Chemical Co., Ltd.) 20g, 6# solvent oil 50g (source: Beijing sky Cole Chemical Co., Ltd.), trimethyl carbinol 70g, potassium permanganate 50g, adds modulation kettle, continuously stirring 2 hours, stand-by.This additive samples called after a.
20kg additive a is pressed into 50kg dress steel cylinder, then is pressed into dme 30kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 60%, additive 40%.This cutting gas sample called after A.
Embodiment bis-:
Additive configuration proportion measures by following: tertiary butyl ferrocene 300g, and ether 100g, aromatic hydrocarbon oil 50g, 6# solvent oil 150g, trimethyl carbinol 400g, adds modulation kettle, and continuously stirring 2 hours is stand-by.This additive samples called after b.
5g additive b is pressed into 50kg dress steel cylinder, then is pressed into dme 49.995kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 99.99%, additive 0.01%.This cutting gas sample called after B.
Embodiment tri-:
Additive configuration proportion measures by following: tertiary butyl ferrocene 30g, and ether 730g, aromatic hydrocarbon oil 10g, 6# solvent oil 220g, trimethyl carbinol 10g, adds modulation kettle, and continuously stirring 2 hours is stand-by.This additive samples called after c.
0.5kg additive c is pressed into 50kg dress steel cylinder, then is pressed into dme 49.5kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 99%, additive 1%.This cutting gas sample called after C.
Embodiment tetra-:
Additive configuration proportion measures by following: tertiary butyl ferrocene 50g, and ether 200g, aromatic hydrocarbon oil 30g, 6# solvent oil 600g, trimethyl carbinol 100g, potassium permanganate 20g, adds modulation kettle, and continuously stirring 2 hours is stand-by.This additive samples called after d.
5kg additive d is pressed into 50kg dress steel cylinder, then is pressed into dme 45kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 90%, additive 10%.This cutting gas sample called after D.
Embodiment five:
Additive configuration proportion measures by following: tertiary butyl ferrocene 200g, and ether 500g, aromatic hydrocarbon oil 200g, 6# solvent oil 80g, trimethyl carbinol 10g, potassium permanganate 10g, adds modulation kettle, and continuously stirring 2 hours is stand-by.This additive samples called after e.
10kg additive e is pressed into 50kg dress steel cylinder, then is pressed into dme 40kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 80%, additive 20%.This cutting gas sample called after E.
Embodiment six:
Additive configuration proportion measures by following: tertiary butyl ferrocene 100g, and ether 400g, aromatic hydrocarbon oil 10g, 6# solvent oil 270g, trimethyl carbinol 20g, potassium permanganate 200g, adds modulation kettle, and continuously stirring 2 hours is stand-by.This additive samples called after f.
2.5kg additive f is pressed into 50kg dress steel cylinder, then is pressed into dme 47.5kg to steel cylinder, valve-off, fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 95%, additive 5%.This cutting gas sample called after F.
Embodiment seven:
5g additive a is pressed into 50kg dress steel cylinder; Be pressed into assist gas 495g altogether to steel cylinder again, wherein: acetylene 99g, propane 297g, butane 49.5g, pentane 49.5g; The most backward steel cylinder is pressed into dme 49.5kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 99%, assist gas 0.99%, additive 0.01%.This cutting gas sample called after G.
Embodiment eight:
0.5kg additive b is pressed into 50kg dress steel cylinder; Be pressed into acetylene 19.5kg to steel cylinder again, the most backward steel cylinder is pressed into dme 30kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 60%, assist gas 39%, additive 1%.This cutting gas sample called after H.
Embodiment nine:
9.5kg additive c is pressed into 50kg dress steel cylinder; Be pressed into assist gas 5g altogether to steel cylinder again, wherein: acetylene 2.5g, propane 2.5g; The most backward steel cylinder is pressed into dme 40.495kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 80.99%, assist gas 0.01%, additive 19%.This cutting gas sample called after I.
Embodiment ten:
0.5kg additive d is pressed into 50kg dress steel cylinder; Be pressed into assist gas 9.5kg altogether to steel cylinder again, wherein: acetylene 7.125kg, propane 2.375kg; The most backward steel cylinder is pressed into dme 40kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 80%, assist gas 19%, additive 1%.This cutting gas sample called after J.
Embodiment 11:
19.5kg additive e is pressed into 50kg dress steel cylinder; Be pressed into assist gas 0.5kg altogether to steel cylinder again, wherein: acetylene 150g, propane 25g, propylene 125g, butane 100g, pentane 100g; The most backward steel cylinder is pressed into dme 30kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 60%, assist gas 1%, additive 39%.This cutting gas sample called after K.
Embodiment 12:
4.5kg additive f is pressed into 50kg dress steel cylinder; Be pressed into assist gas 0.5kg altogether to steel cylinder again, wherein: acetylene 300g, propane 50g, propylene 100g, butane 25g, pentane 25g; The most backward steel cylinder is pressed into dme 45kg, valve-off, and fully mixing obtains cutting gas.The quality percentage composition of the each component of this cutting gas is: dme 90%, assist gas 1%, additive 9%.This cutting gas sample called after L.
Comparative example one
Adopt acetylene as cutting gas, cutting effect is listed in the table below.
Comparative example two
Adopt propane as cutting gas, cutting effect is listed in the table below.
Comparative example three
Adopt pure Dimethyl ether as cutting gas, cutting effect is listed in the table below.
Above-mentioned each sample unification is carried out to carbon steel sheet cutting experiment, and cutting experiment result contrasts as following table:
Claims (11)
1. the cutting of the infant industry take dme as a main component gas, including but not limited to dme and additive, each constituent mass per-cent is:
Dme: 60～99.99%;
Additive: 0.01%～40%;
Described additive is made by tertiary butyl ferrocene, ether, aromatic hydrocarbon oil, 6# solvent oil, the trimethyl carbinol, potassium permanganate, each constituent mass per-cent is composed as follows: tertiary butyl ferrocene 1%～30%, ether 10%～80%, aromatic hydrocarbon oil 1%～20%, 6# solvent oil 5%～60%, the trimethyl carbinol 1%～40%, potassium permanganate 0%～20%.
2. cut according to claim 1 gas, it is characterized in that, the each constituent mass per-cent of cutting gas is: dme 80～99.99%, additive 0.01%～20%.
3. cut according to claim 2 gas, it is characterized in that, the each constituent mass per-cent of cutting gas is: dme 90～99.99%, additive 0.01%～10%.
4. according to any one cutting gas described in claim 1～3, it is characterized in that, additive is composed as follows: tertiary butyl ferrocene 1%～20%, ether 40%～80%, aromatic hydrocarbon oil 1%～10%, 6# solvent oil 5%～30%, the trimethyl carbinol 1%～20%, potassium permanganate 0%～10%.
5. cut according to claim 4 gas, it is characterized in that, additive composition: tertiary butyl ferrocene 1%～10%, ether 60%～80%, aromatic hydrocarbon oil 1%～5%, 6# solvent oil 10%～30%, the trimethyl carbinol 5%～10%, potassium permanganate 0%～5%.
6. according to any one cutting gas described in claim 1～3, it is characterized in that, in cutting gas, also add assist gas; The each constituent mass per-cent of cutting gas is: dme 60～99%, additive 0.01%～39%, assist gas 0.01～39%; Assist gas is one or more of acetylene, propane, propylene, butane, butylene; The each constituent mass per-cent of assist gas is: acetylene 20%～100%; Propane 0%～60%; Propylene 0%～60%; Butane 0%～40%; Pentane 0%～40%.
7. described in wanting 6 according to right, cut gas, it is characterized in that, the each constituent mass per-cent of cutting gas is: dme 80～99%, additive 0.01%～19%, assist gas 0.01～19%.
8. cut according to claim 6 gas, it is characterized in that, the each constituent mass per-cent of assist gas is: acetylene 50%～100%; Propane 0%～50%; Propylene 0%～50%; Butane 0%～20%; Pentane 0%～20%.
9. cut according to claim 6 gas, it is characterized in that, additive mass percent is composed as follows: tertiary butyl ferrocene 1%～20%, ether 40%～80%, aromatic hydrocarbon oil 1%～10%, 6# solvent oil 5%～30%, the trimethyl carbinol 1%～20%, potassium permanganate 0%～10%.
10. cut according to claim 9 gas, it is characterized in that, additive mass percent is composed as follows: tertiary butyl ferrocene 1%～10%, ether 60%～80%, aromatic hydrocarbon oil 1%～5%, 6# solvent oil 10%～30%, the trimethyl carbinol 5%～10%, potassium permanganate 0%～5%.
The compound method of any one cutting gas described in 11. 1 kinds of claims 1～10, comprising:
The preparation of A, additive: under normal temperature and pressure, each raw material is according to dosage added to modulation kettle, continuously stirring, obtains additive;
The preparation of B, industrial cutting gas: first according to dosage get in additive injection liquid liquefied oil gas empty bottle, selectively again by gas filling station by assist gas injection liquid liquefied oil gas empty bottle, finally by gas filling station by dme injection liquid liquefied oil gas empty bottle, valve-off, fully mixes the preparation that completes infant industry cutting gas.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103013597A (en) * | 2012-12-14 | 2013-04-03 | 四川帝尔新能源科技有限公司 | Dimethyl ether mixed fuel composition and preparation method thereof |
| CN103242919A (en) * | 2013-05-16 | 2013-08-14 | 秦如新 | Nanometer additive composition and preparation method thereof and dimethyl ether fuel |
| CN103614176A (en) * | 2013-12-16 | 2014-03-05 | 德阳恒博秸油科技有限公司 | Synergist of light alkane and preparation method thereof |
| CN103820180A (en) * | 2014-03-21 | 2014-05-28 | 王海涛 | Mixed dimethyl ether gas |
| CN109410738A (en) * | 2017-08-16 | 2019-03-01 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of thermo-responsive label, preparation method and application method |
| CN109694762A (en) * | 2019-01-11 | 2019-04-30 | 浙江纺织服装职业技术学院 | A kind of ether hydro carbons welding gas |
| CN112195048A (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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206039A (en) * | 1997-07-18 | 1999-01-27 | 曾兆祥 | Acetylene substituting high-energy fuel gas and its additive |
| CN101033429A (en) * | 2006-03-06 | 2007-09-12 | 杨向东 | Active ion welding gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1302093C (en) * | 2005-03-03 | 2007-02-28 | 郑长同 | Industrial fuel gas for metal cutting and welding |
| CN1775923A (en) * | 2005-11-18 | 2006-05-24 | 张勇 | LD-nano metal welding-cutting gas raw material composition and its preparing 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 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206039A (en) * | 1997-07-18 | 1999-01-27 | 曾兆祥 | Acetylene substituting high-energy fuel gas and its additive |
| CN101033429A (en) * | 2006-03-06 | 2007-09-12 | 杨向东 | Active ion welding gas |
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