CN1302853A - Liquefied ether-base gas and its preparing process - Google Patents
Liquefied ether-base gas and its preparing process Download PDFInfo
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- CN1302853A CN1302853A CN 00136395 CN00136395A CN1302853A CN 1302853 A CN1302853 A CN 1302853A CN 00136395 CN00136395 CN 00136395 CN 00136395 A CN00136395 A CN 00136395A CN 1302853 A CN1302853 A CN 1302853A
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- liquefied
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- ether
- dme
- pentane
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Abstract
An ether-base liquefied gas is prepared from dimethyl ether (30-60 Wt. portions), liquefied petroleum gas (10-50), pentane (5-30), liquefied ammonia (0.5-10), ethanediol methylether (0.1-1), acetone (0.1-1) and further adding hydrazine hydrate (0.1-0.5) as a preferred selection through liquefying the dimethyl ether gas by pressurizing it, proportionally loading all components into a pressure vessel and mixing uniformly. Its advantages include no poison, smoke and carbon deposit, high combustion performance, and low cost.
Description
The present invention relates to gas composition, relate more specifically to a kind of with the liquefied ether-base gas and the production method thereof of dme as main basic ingredient as fuel.
Along with improving constantly of living standards of the people, to better people's living environment and the requirement of quality also more and more higher, people urgently wish that the fuel gas with sanitation and hygiene replaces the coal or the firewood of serious environment pollution.The fuel gas that uses mainly contains coal gas, Sweet natural gas and oil liquefied gas at present.Wherein, coal gas and Sweet natural gas are subjected to the restriction of equipment, pipeline, cost, are difficult in small and medium-sized cities and the small towns penetration and promotion, and the oil liquefied gas that urban and rural residents generally use is owing to hold at high price, and imbalance between supply and demand is outstanding, thereby brings very big inconvenience to resident living.The basic outlet that addresses this problem is to increase the output of standard compliant liquefied gas.To this, a lot of people have proposed various solutions.Learn that according to the Chinese patent communique CN1180729A, CN1227864A and CN1149072A are more typically arranged.Wherein, disclosed liquefied synthetic gas only contains dme and two kinds of compositions of pentane among the CN1180729A.Because the mutual solubility of dme and pentane is subjected to Temperature Influence, temperature is high more, and its mutual solubility is more little.Particularly use in up to the environment more than 30 ℃ regular meeting often owing to the mutual solubility of dme and pentane reduces to cause layering at summer temperature; the result make boiling point lower (23.7 ℃) dme very fast burn burn down and the residual higher pentane (36.1 ℃ of Skellysolve A boiling points) of boiling point down; 27.8 ℃ of iso-pentane boiling points), at this moment will cause being difficult to igniting or can't continuing to use at all as combustion gas.In addition, when envrionment temperature was lower than 10 ℃, the vapour pressure of dme descended rapidly, so also caused ignition difficulties.Therefore, the fuel liquefied gas that only contains dme and two kinds of compositions of pentane is not suitable for common kitchen range.In addition, CN1227864A discloses a kind of liquid compound fuel, and its composition is: dme 20～40%, pentane 50～70%, oil liquefied gas 0～20%: perhaps dme 30～40%, pentane 50～70%, methyl alcohol 0～10%.This shows that wherein except a spot of oil liquefied gas or methyl alcohol, all the other also have only dme and two kinds of compositions of pentane, therefore still have above-mentioned shortcoming.In addition, methyl alcohol has toxicity, can grievous injury when methyl alcohol reaches finite concentration in environmental gas the people eyes in addition cause blindly, therefore, it is unfavorable that this fuel is used as family's fuel.In addition, CN1149072A discloses a kind of liquefied synthetic gas, wherein contains two kinds of a large amount of compositions of pentane and liquefied petroleum gas (LPG) (respectively do for oneself (30～60 weight part) and methyl alcohol, liquefied ammonia, sodium hydroxide, hydrazine hydrate, acetone and six kinds of minor constituents of ferrocene (for example methyl alcohol is 1～5 weight part).Different with the former two, do not contain dme in the synthetic gas of this invention.This characteristic feature of an invention is to utilize the low price of pentane, utilizes methyl alcohol to reduce the liquefied synthetic gas boiling point in addition, utilize liquefied ammonia improve liquefied gas at low temperatures volatility and utilize hydrazine hydrate and sodium hydroxide produces hydrogen molecule.Owing to do not contain dme in this fuel, therefore must use methyl alcohol to reduce the boiling point of pentane, bring the toxic problem of methyl alcohol thereby also resemble the above-mentioned CN1227864A.In addition, in its liquefied synthetic gas, add the sodium hydroxide of severe corrosive, therefore must cause the corrosion of liquified gas container.Having, all is nonvolatile as the sodium hydroxide and the ferrocene of additive again, so the concentration of sodium hydroxide in the liquified gas container and ferrocene is inevitable increasing, finally will separate out from liquid, thereby can cause the obstruction of nozzle or pipeline.This shows that all there is big shortcoming in liquefied synthetic gas in the prior art.
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of nontoxic smokeless, safe in utilization, production cost is low, calorific value is high, have good burning performance and from the basin to kitchen range all can with the general liquefied ether-base gas of oil liquefied gas.
The inventor finds through long term studies test back, as long as suitably reduce the content of pentane, and utilize acetone that end always noted by people with ethylene glycol monomethyl ether as the additive that improves each component mutual solubility and utilize liquefied ammonia as the additive that improves the liquefied gas combustionproperty, promptly can replace most of oil liquefied gas in the liquefied gas as fuel, thereby reduce the cost of liquefied gas greatly and keep the high-performance of liquefied gas as fuel with dme and pentane.Because the present invention has so far just been finished in this discovery.
Thereby, the invention provides a kind of liquefied ether-base gas, contain dme, oil liquefied gas, pentane, liquefied ammonia and acetone, its general planning is characterised in that, wherein also contain ethylene glycol monomethyl ether, and the weight part of various raw materials is: dme 30～60, oil liquefied gas 10～50, pentane 5～30, liquefied ammonia 0.5～10, ethylene glycol monomethyl ether 0.1～1.0, acetone 0.1～1.0.
Preferred version is that the weight part of various raw materials in this liquefied ether-base gas is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8.
Preferred scheme is also to contain hydrazine hydrate in this liquefied ether-base gas, and the weight part of various raw materials is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8, hydrazine hydrate 0.1～0.5.
In addition, the present invention also provides a kind of production method of liquefied ether-base gas, it is characterized in that, is that 0.45～0.5Mpa is so that its liquefaction with gas of dimethyl ether with compressor pressurizes to gauge pressure, send into the dme liquid storage tank, utilize dispenser that dme, oil liquefied gas, pentane, liquefied ammonia, acetone, ethylene glycol monomethyl ether are poured into by the weight part of the general planning of the invention described above liquefied ether-base gas product or preferred version defined and be mixed into uniform liquefied ether-base gas product in the autoclave.
In addition, another preferred version in the production method of liquefied ether-base gas of the present invention is dme, oil liquefied gas, pentane, liquefied ammonia, acetone, ethylene glycol monomethyl ether, hydrazine hydrate to be poured in the autoclave by the weight part of the more preferably scheme defined of the invention described above liquefied ether-base gas product mix.
At length explain the present invention below.
In liquefied ether-base gas of the present invention, for the lower problem of mutual solubility that overcomes dme and pentane, suitably reduce the content of pentane and increase the content of dme, and with them with the main component of a certain amount of oil liquefied gas as liquefied ether-base gas.In addition, for the lower problem of mutual solubility that solves each composition, used the always last ethylene glycol monomethyl ether (CH that is noted by people
3OCH
2CH
2OH) as additive, because an end of ethylene glycol monomethyl ether has the very strong hydroxyl of polarity, and its other end has the very weak alkyl of polarity, therefore can promote the liquid of strong polar liquid and low-pole to dissolve each other, fashionable when it is added as additive with acetone, the better effects if that this promotion is dissolved each other.Especially fashionable when ethylene glycol monomethyl ether, acetone and hydrazine hydrate are added as additive together, the effect that this promotion is dissolved each other is best.The adding of liquefied ammonia can improve the volatility of liquefied synthetic gas, thereby has improved combustionproperty.And the effect of dme and pentane is the oil liquefied gas of major part in the replacing fuel, thereby reaches the purpose that reduces cost.
Should illustrate that the main component dme in the liquefied ether-base gas of the present invention can be produced with coal as raw material, its primary process is to make water-gas (CO+H by coal
2), make methyl alcohol by water-gas again, in the presence of heat pressurization and catalyzer, make methyl alcohol carry out dehydration reaction and make dme then.But this is a prior art, does not belong to scope of the present invention.Narration herein only is to illustrate that the source of dme is easy, and production technique is simple and price is relatively comparatively cheap.In addition, pentane is the byproduct of petroleum refining, and its price is also quite cheap.
Stress also that in addition liquefied ether-base gas of the present invention does not contain the sodium hydroxide of deleterious methyl alcohol and severe corrosive, also do not contain any residual additive of solids (as sodium hydroxide and ferrocene etc.) that causes.
Compare with the state of the art, that liquefied ether-base gas of the present invention has is nontoxic, smokelessly, carbon deposit not, have good burning performance, can not cause nozzle or line clogging, safe and reliable, production technique is simple, cheap, and its basin and kitchen range can with advantage such as oil liquefied gas is general.
Enumerate embodiment and application examples below and explain the present invention particularly.
Embodiment 1
The gas of dimethyl ether of being produced by coal is removed alkali with alkali cleaning deacidification and washing, uses the moisture separator isolation of purified then, with compressor pressurizes to 0.5Mpa so that the dme liquid storage tank is sent in its liquefaction.Utilize dispenser in the oil liquefied gas steel cylinder of a 15Kg capacity, at first to pour into pentane 750g, acetone 75g and ethylene glycol monomethyl ether 75g, shake up, and then pour into dme 6450g, oil liquefied gas 7500g and liquefied ammonia 150g, shake up.At this moment the weight percent of each composition should be mutually in jar: dme 43%, oil liquefied gas 50%, pentane 5%, liquefied ammonia 1%, acetone 0.5%, ethylene glycol monomethyl ether 0.5%.The liquefied ether-base gas that is obtained promptly can provide use.
Embodiment 2
According to the packaging process of embodiment 1, in cylinder for liquefied gas, at first pour into pentane 1050g, hydrazine hydrate 30g, acetone 60g and ethylene glycol monomethyl ether 60g, shake up, and then pour into dme 8250g, oil liquefied gas 5250g and liquefied ammonia 300g, shake up.At this moment the weight percent of each composition should be mutually in jar: dme 55%, oil liquefied gas 35%, pentane 7%, liquefied ammonia 2%, hydrazine hydrate 0.2%, acetone 0.4%, ethylene glycol monomethyl ether 0.4%.
Application examples 1
The liquefied ether-base gas that use makes by embodiment 1.Count 34 yuan every jar by the summation of its raw materials cost, labour cost and gross profit, the oil liquefied gas of supplying according to plan than the oil liquefied gas station (55 yuan every jar) lacks 21 yuan, and just price reduces by 38%.Used 1.5 hours by every day control, used altogether 45 days, combustion position is good always, and in jar no any residual (promptly use up back jar weigh identical with slack tank weight) at last.And common 15Kg oil liquefied gas can only use 37 days, and was using up back residual 2.5Kg raffinate in jar.
Claims (6)
1, a kind of liquefied ether-base gas, contain dme, oil liquefied gas, pentane, liquefied ammonia and acetone, it is characterized in that, wherein also contain ethylene glycol monomethyl ether, and the weight part of various raw materials is: dme 30～60, oil liquefied gas 10～50, pentane 5～30, liquefied ammonia 0.5～10, ethylene glycol monomethyl ether 0.1～1.0, acetone 0.1～1.0.
2, liquefied ether-base gas as claimed in claim 1 is characterized in that, wherein the weight part of contained each composition is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8.
3, liquefied ether-base gas as claimed in claim 1 or 2, it is characterized in that, wherein also contain hydrazine hydrate, and the weight part of various raw materials is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8, hydrazine hydrate 0.1～0.5.
4, a kind of production method of liquefied ether-base gas, it is characterized in that, is that 0.45～0.5Mpa is so that its liquefaction with gas of dimethyl ether with compressor pressurizes to gauge pressure, send into the dme liquid storage tank, utilize the weight part of dispenser, dme 30～60, oil liquefied gas 10～50, pentane 5～30, liquefied ammonia 0.5～10, acetone 0.1～1.0, ethylene glycol monomethyl ether are gone into to be mixed in the autoclave uniform liquefied ether-base gas product for 0.1～1.0 jar by various raw materials.
5, the production method of liquefied ether-base gas as claimed in claim 4, it is characterized in that wherein the weight part of said various raw materials is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8.
6, the production method of liquefied ether-base gas as claimed in claim 4, it is characterized in that, wherein said various raw materials also contain hydrazine hydrate, and the weight part of various raw materials is: dme 40～58, oil liquefied gas 30～50, pentane 5～10, liquefied ammonia 0.8～5, acetone 0.2～0.8, ethylene glycol monomethyl ether 0.2～0.8, hydrazine hydrate 0.1～0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00136395 CN1302853A (en) | 2000-12-28 | 2000-12-28 | Liquefied ether-base gas and its preparing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00136395 CN1302853A (en) | 2000-12-28 | 2000-12-28 | Liquefied ether-base gas and its preparing process |
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| CN1302853A true CN1302853A (en) | 2001-07-11 |
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| CN 00136395 Pending CN1302853A (en) | 2000-12-28 | 2000-12-28 | Liquefied ether-base gas and its preparing process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2000
- 2000-12-28 CN CN 00136395 patent/CN1302853A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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