CN1045463C - Process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas - Google Patents
Process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas Download PDFInfo
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- CN1045463C CN1045463C CN96111818A CN96111818A CN1045463C CN 1045463 C CN1045463 C CN 1045463C CN 96111818 A CN96111818 A CN 96111818A CN 96111818 A CN96111818 A CN 96111818A CN 1045463 C CN1045463 C CN 1045463C
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- China
- Prior art keywords
- gas
- mixed
- gasification
- fuel gas
- air
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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
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
Abstract
The present invention belongs to technology for preparing light hydrocarbon dry no residual liquid gasification mixed fuel gas. The main procedures are as following: step 1 (transition), the mixed light hydrocarbon of which the boiling point is not higher than 80 DEG C is filtrated by a 120-mesh transition device; step 2 (gasification), the mixed light hydrocarbon after filtration is pressurized and atomized to be rapidly gasified into the fuel gas with pressure after the heat transmission and absorption with a heat exchanger; step 3 (gas mix), the air with pressure is inputted into a gas mixing chamber to be mixed and matched with the gasified fuel gas; step 4 is conveying distribution. The present invention has the main advantages that the gasified raw material is the light hydrocarbon of which the source is wide, and the thermal value of the mixed fuel gas is from 6000 to 14000 KCal/M<3> which is more than two times higher than the thermal value from 3500 to 4200 KCal/M<3> of the common city coal gas.
Description
The invention belongs to a kind of air mixture technology, particularly in a kind of by the processing method of lighter hydrocarbons through the dry type air mixture.
The town gas that China uses the earliest is that its toxicity is more and more paid attention to by people with the gas maked coal of carbon monoxide as the main body component, and the annual personnel casualty accidents that causes owing to improper use happens occasionally.The nineties begins people and is exploring a kind of novel gas that can replace former town gas.Restricted the development of combustion gas owing to the mode restriction that often makes the gasified raw material of being got be subjected to scope of gasification.
The objective of the invention is at now with the problem that exists in the combustion gas, through constantly exploring a kind of novel process of using lighter hydrocarbons through the dry raffinate-free gasification air mixture of proposition.
The key step of preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas technology of the present invention is followed successively by:
(1) filter: it is stand-by after 120 order strainers filter to obtain the mixed light-hydrocarbon of boiling point≤80 ℃ from petrochemical enterprise;
(2) gasification: after filtering mixed light-hydrocarbon pressurization and through the nozzle spray atomizing, again will atomized liquid conduct heat to be gasificated into rapidly after the heat absorption and be with compression ignite gas with heat exchanger.
(3) mix gas: air with pressure is imported mixing chamber with gasification burning is mixed by pneumatic plant, the gas content in the air mixture records oxygen level through oxygen measuring instrument, and conversion draws gas content indirectly, is controlled in the scope of set-point;
(4) transmission ﹠ distribution: adopt low pressure one-level transmission ﹠ distribution by pipeline, or adopt the long distance of pressurization midway to carry.
The pressure of the lighter hydrocarbons pressurization in the gasification step is generally 5-8Kg/cm
2Used heat exchanger is board-like, shell and tube or votator in the gasification step, and its heat transfer temperature is 80-110 ℃.The set-point of the combustible gas volume content control in the air mixture is 15-30%.The air that is pressed in the air mixture is a dry air, and its relative humidity is 60%.
The major advantage of novel process of the present invention is: the gasified raw material that at first is it is that the lighter hydrocarbons (light naphtha) of boiling point≤80 ℃ are a kind of hydrocarbon polymers, form by alkene and alkane, this lighter hydrocarbons source is very wide, as: the engineering byproduct of ethene in the petroleum chemical plant, folding oil is coagulated in the byproduct of heavy oil, residual oil catalysis, cracking gained and the association in the wet oil gas field in the refinery, this raw material is liquid at normal temperatures, dew-point temperature height, liquefaction easily; Next is that the calorific value of the air mixture of being made by novel process of the present invention is 6000-14000KCal/M
3, than the calorific value 3500-4200KCal/M of general town gas
3Exceed more than 2 times, and the pipe-line transportation that reaches cold district in the winter time dewfall not, guaranteed the normal air feed of winter and cold district.
Combustible gas content in the air mixture of the present invention is divided into following 4 grades and calorific value according to different purposes and is respectively:
(1) its calorific value of 15-20% is: 6000-8000KCal/M
3
(2) its calorific value of 20-25% is: 8000-10000KCal/M
3
(3) its calorific value of 25-30% is: 10000-12000KCal/M
3
(4) its calorific value of 30-35% is: 12000-14000KCal/M
3
The limits of explosion of each lighter hydrocarbons in the air mixture of the present invention all＜9.7% (volume percentage), get 1.5 safety coefficient, its higher limit is 1.5 * 9.7=14.55%.And the lighter hydrocarbons content in the combustion gas of the present invention minimum be 15%, greater than 14.55%, so be safe.
The pipe-line transportation that the present invention fully takes into account winter and cold district is dewfall not, so be mixed than 30%, transfer pressure is 250mmH
2O or be mixed than being 35%, carry and storage pressure at＜300mmH
2During O ,-10 ℃ can not revealing, guarantee the normal gas supply conduit of winter and cold district.
Lighter hydrocarbons of the present invention (light naphtha) the dry raffinate-free technology that is mixed is controlled the consistence and the stability of the continuous air feed calorific value of gasification burning to greatest extent, has overcome the inconsistent and fluctuation of air feed calorific value of wet type gasifier.Another characteristics of dry type are that warm up time is shorter, and the heat utilization efficiency height also can energy-conservation at last energy-conservation again technology, or binodal can technology.
The air that is pressed in the air mixture is dry air (especially when envrionment temperature is lower than 0 ℃), and relative air humidity is 60%, otherwise can bring water of condensation to airing system, even freeze, block pipeline, influence normal air feed, also can produce sour water compound corrosion pipeline and accessory.Therefore, can add methyl alcohol or the ethylene glycol antifreeze of 0.1-0.15% in cold season.
Technical process of the present invention as shown in Figure 1.
Inflammable gas blending amount of the present invention adopts the oxygen level in the air mixture of oxygen measuring instrument mensuration in the process of being mixed, because oxygen content is a constant basis (its oxygen level is about 21%) in the atmosphere, when gas content is 20% air mixture, its oxygen level is 16.8%, the oxygen measuring instrument reaction increased spray amount greater than 16.8% o'clock; Less than 16.8% o'clock, reduce spray amount, up to 16.8% stable till, to determine the reliability of air mixture.
Embodiment:
The boiling point that to obtain from petroleum chemical plant is 70 ℃ a mixing light petroleum naphtha, sends into plate-type heat exchanger through the filtration of 120 orders and is forced into 6Kg/cm
2After, the input mixing chamber, in addition air with pressure being sent into mixing chamber is mixed, it is 20% that air mixture requires inflammable gas content, with the oxygen level in the oxygen measuring instrument reaction air mixture, regulating spray amount, is to end in 16.8% o'clock up to oxygen level, gets final product to such an extent that inflammable gas is the air mixture of 20% (volumetric ratio).
Claims (3)
1, a kind of process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas, its key step is followed successively by:
(1) filter: it is stand-by after 120 order strainers filter to obtain the mixed light-hydrocarbon of boiling point≤80 ℃ from petrochemical enterprise;
(2) gasification: after filtering mixed light-hydrocarbon pressurization and through the nozzle spray atomizing, again will atomized liquid conducting heat with heat exchanger is gasificated into band compression ignite gas rapidly after the heat absorption, and the pressure that the lighter hydrocarbons in the gasification step pressurize is 5-8Kg/cm
2, heat transfer temperature is 80-110 ℃;
(3) mix gas: air with pressure is imported mixing chamber with gasification burning is mixed by pneumatic plant, the combustible gas content in the air mixture converts indirectly after oxygen measuring instrument records oxygen level and draws, and the set-point that the combustible gas volume content is controlled is 15-30%;
(4) transmission ﹠ distribution: adopt low pressure one-level transmission ﹠ distribution by pipeline, or adopt the long distance of pressurization midway to carry.
2, the air mixture processing method described in claim 1 is characterized in that heat exchanger used in the gasification step is board-like, shell and tube or votator.
3, the air mixture processing method described in claim 1, the air that it is characterized in that being pressed in the air mixture is a dry air, its relative humidity is 60%.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96111818A CN1045463C (en) | 1996-12-18 | 1996-12-18 | Process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas |
| PCT/CN1997/000146 WO1998027185A1 (en) | 1996-12-18 | 1997-12-16 | Process for the dry gasification of a mixed light hydrocarbon to fuel gas without residual liquid |
| AU53970/98A AU5397098A (en) | 1996-12-18 | 1997-12-16 | Process for the dry gasification of a mixed light hydrocarbon to fuel gas without residual liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96111818A CN1045463C (en) | 1996-12-18 | 1996-12-18 | Process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1172150A CN1172150A (en) | 1998-02-04 |
| CN1045463C true CN1045463C (en) | 1999-10-06 |
Family
ID=5121261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96111818A Expired - Fee Related CN1045463C (en) | 1996-12-18 | 1996-12-18 | Process for preparing light hydrocarbon dry raffinate-free gasification mixed fuel gas |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1045463C (en) |
| AU (1) | AU5397098A (en) |
| WO (1) | WO1998027185A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007006236A1 (en) * | 2005-07-14 | 2007-01-18 | Shanghai Lianxiang Real Estate Co., Ltd. | A production method for civil mixed fuel gas consisting of light hydrocarbons mixed with air and coal gas |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069916C (en) * | 1998-07-03 | 2001-08-22 | 简昌利 | Process for preparing civil gas by absorbing 5C light hydrocarbon using air |
| CN102095073A (en) * | 2010-12-16 | 2011-06-15 | 山西太钢不锈钢股份有限公司 | Conveying and distributing method of industrial gas |
| CN112648634A (en) * | 2020-12-03 | 2021-04-13 | 湖北三恒电气设备有限公司 | Novel combined liquid light hydrocarbon gasification system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067447A (en) * | 1992-05-05 | 1992-12-30 | 顾建平 | A kind of method and equipment thereof that pentane is converted into universal gas |
| CN1104746A (en) * | 1994-10-20 | 1995-07-05 | 陈兴曾 | Gasification and application of low-grade cracking light hydrocarbon fuel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3371126A (en) * | 1966-08-19 | 1968-02-27 | Universal Oil Prod Co | Hydrocarbon conversion process, naphtha to aromatics and town gas |
| GB1274803A (en) * | 1970-04-27 | 1972-05-17 | Shell Int Research | Fuel compositions |
| CN1110986A (en) * | 1994-04-28 | 1995-11-01 | 湖南长泰能源实业有限公司 | Prodn. technique and Equipment for epuration and prepn. of domestic fuel by utilizing carbon 5 cut |
| CN1134529A (en) * | 1995-04-28 | 1996-10-30 | 李勇 | Low-pressure normal-temp. compound carbon-5 gas making and distributing system |
-
1996
- 1996-12-18 CN CN96111818A patent/CN1045463C/en not_active Expired - Fee Related
-
1997
- 1997-12-16 AU AU53970/98A patent/AU5397098A/en not_active Abandoned
- 1997-12-16 WO PCT/CN1997/000146 patent/WO1998027185A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067447A (en) * | 1992-05-05 | 1992-12-30 | 顾建平 | A kind of method and equipment thereof that pentane is converted into universal gas |
| CN1104746A (en) * | 1994-10-20 | 1995-07-05 | 陈兴曾 | Gasification and application of low-grade cracking light hydrocarbon fuel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007006236A1 (en) * | 2005-07-14 | 2007-01-18 | Shanghai Lianxiang Real Estate Co., Ltd. | A production method for civil mixed fuel gas consisting of light hydrocarbons mixed with air and coal gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1172150A (en) | 1998-02-04 |
| WO1998027185A1 (en) | 1998-06-25 |
| AU5397098A (en) | 1998-07-15 |
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