CN103484161A - Feeding method of Texaco gasification furnace using natural gas as raw material - Google Patents
Feeding method of Texaco gasification furnace using natural gas as raw material Download PDFInfo
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- CN103484161A CN103484161A CN201210194405.4A CN201210194405A CN103484161A CN 103484161 A CN103484161 A CN 103484161A CN 201210194405 A CN201210194405 A CN 201210194405A CN 103484161 A CN103484161 A CN 103484161A
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- texaco
- natural gas
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- feeding
- temperature
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000003345 natural gas Substances 0.000 title claims abstract description 43
- 238000002309 gasification Methods 0.000 title claims abstract description 9
- 239000002994 raw material Substances 0.000 title claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000009508 confectionery Nutrition 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 235000021050 feed intake Nutrition 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a feeding method of a Texaco gasification furnace taking natural gas as a raw material; heating the burner to 1000-1100 ℃; establishing water circulation between the gasification furnace and the C1 tower or establishing the water circulation in advance; replacing the Texaco burner, igniting the Texaco burner after replacement, controlling the temperature to be 1100 ℃ after ignition, and using a torch pipeline; gradually increasing the amount of natural gas and oxygen, controlling the temperature to 1100 ℃ in the adding process, gradually adding the natural gas and oxygen to the original feeding load, completing 15 minutes in the whole adding process, and completing the feeding process after adding the natural gas and oxygen to 50% of the original feeding load; opening a process gas main valve, starting pressure boosting of a gasification system, and synchronously and gradually increasing the temperature of the gasification furnace to 1350 ℃; after the pressure rises, water and gas are cut; the method adopts a mode of gradually increasing the temperature, directly links the steps of ignition heating and loading of the Texaco burner, avoids the long-time heating and feeding processes of the original Texaco burner, and eliminates vibration and impact during feeding.
Description
Technical field
The present invention relates to a kind of feeding method of take the Texaco gasifier that Sweet natural gas is raw material.
Background technology
Vibration when Texaco gasifier feeds intake and impact are larger, this is that the feeding mode of being stipulated by Texaco gasifier determines, this kind vibrates and impacts larger to the infringement of vapourizing furnace, easily cause the consequences such as stove brick gas blowby, internals distortion, torch water attack, how to reduce vibration and impact while feeding intake, domestic common measure at present is the high feed temperature of control, tries one's best and shorten the program time etc. that feeds intake.But in these measures: control Texaco's heating-up time that high feed temperature need to be longer, cause extend on-stream time and the damage of Texaco's burner is increased; And charging time is determined by interlock program basically, the leeway that can shorten is little.And these two kinds of methods can only weaken vibration and the impact while feeding intake a little, and large improvement can not be arranged this.
Since 1# natural gas gasifying stove puts into operation, we find, the vibration when natural gas gasifying stove feeds intake and impulse ratio residual oil gasifier are larger, major cause burning of gas process more rapidly, more consistent, cause explosive power stronger, find in interchange that Ningxia factory equivalent type device is also kindred circumstances.How thoroughly eliminate vibration and the impact while feeding intake, by long-term thinking, according to the characteristics of natural gas gasifying stove, proposition can thoroughly be eliminated vibration and the impact while feeding intake by improving natural gas gasifying stove feeding mode.Carry out assay through the operation link to after the change scheme, thought that this scheme is feasible from technology and security standpoint, and can significantly simplify shutting down operation, shortening shutting down time.
The root of vibrating that feeds intake is exactly the vapourizing furnace interlocking feeding mode that we use now, and the material of 50% load enters suddenly in stove, and moment generation outburst, bring strong vibration and impact.This kind of feeding mode is Texaco's regulation, from necessity, this kind of feeding mode is necessary (oil and coal gasification stove) to non-gaseous fuel, but while using Sweet natural gas, the gas characteristic of Sweet natural gas might not need this kind of feeding mode, just after changing gas furnace into, has adopted original feeding mode.This just provides most important basis for improving feeding mode.
Combustion-type reactor for gas, we can use for reference invaluable experience from other technique, as two secondary reformers that close Braun Process (a section reforming gas and air) 1,, 2, the autothermal reformer (pure oxygen and Sweet natural gas), 4 of the use pure oxygen of the autothermal reformer (Sweet natural gas and air), 3 of KBR company, rope company of Top, the converter (using coke(oven)gas and pure oxygen) of the grand base coking in Dahuangshan.In these techniques, the process that feeds intake of reactor is a lot of than Texaco's program simplification that feeds intake, and start-up process is very short, the vibration while the most important thing is not feed intake and impact.They have common characteristics: the Texaco's burner firing up that feeds intake and be similar to us, we are referred to as for the time being: the intensification ignition type feeds intake.
Summary of the invention
The purpose of this invention is to provide a kind of feeding method of take the Texaco gasifier that Sweet natural gas is raw material; With reference to intensification ignition type feeding mode, feeding intake of natural gas gasifying stove being changed: the igniting of Texaco burner into to--dosage--gradually adds to 50% load (having fed intake).Main principle is: adopt the mode of dosage temperature raising gradually, Texaco's burner firing up and application of load step directly are connected.In the middle of avoiding, original Texaco burner heats up and the process that feeds intake for a long time, eliminates vibration and impact while feeding intake.
Feeding method of take the Texaco gasifier that Sweet natural gas is raw material of the present invention; The driving step is:
(1) vapourizing furnace heats up, and the intensification burner rises to 1000～1100 degree;
(2) set up the water cycle (can build up in advance) between vapourizing furnace and C1 tower;
(3) change Texaco's burner, Texaco's burner igniting after changing, control temperature 1100 degree after igniting, use scare line;
(4) increase gradually Sweet natural gas and amount of oxygen, control temperature 1100 in the dosage process, add to gradually the former load that feeds intake, 15 minutes kinds of whole dosage process complete, and add to the former process of feeding intake after 50% of loading that feeds intake and complete;
(5) open the process gas main valve, gasification system starts to boost, and synchronously improves gasifier temperature gradually in the process of boosting until 1350 degree;
(6) pressure is cut water, is cut gas after being raised to.
The advantage of new feeding mode:
(1) thoroughly eliminate vibration and the impact while feeding intake, support equipment safety and long-term operation.
(2) significantly simplify feed intake operation and workload
(3) significantly shorten the shutting down time because the igniting of Texaco burner is equivalent to feed intake, original Texaco heat up 3 hours, constant temperature 4 hours, feed intake after flame-out and prepare 1 hour etc. all can to remove, 8 hours curtailments of operation.Very favourable for the driving of the horse back after shutdown of short term (burner leaks needs to change burner) especially, only need after the displacement of C1 tower, carry out Texaco's burner igniting at once feeds intake, connect Star-up the 4th step and get final product, need not heat up after parking and can recover at once (furnace temperature 800 can direct ignition more than spending feeds intake).
(4) avoid the torch water hammer, and whole start-up process can be controlled the vapourizing furnace liquid level, the fluctuation of liquid level while avoiding feeding intake stably.
(5) because the natural gas gasifying stove does not need scarfing cinder, in natural gas gasifying stove process, stopping is to need to change due to two kinds of factors of burner because interlock shutdown or burner leak basically, and the mode that igniting feeds intake all can shorten vapourizing furnace time of recovery greatly.
(6), owing to having cancelled Texaco's burner temperature rise period, avoided between Texaco's burner temperature raising period the damage to Texaco's burner.According to exchanging with the expert of Texaco, between temperature raising period, to the disadvantageous major cause of Texaco's burner, be: the time is long, and mass flow is too low, poor to the cooling performance of burner, and mass flow is too low on the other hand, and the burning focus is close to burner, and near burner, envrionment temperature is high.The advantage that the intensification ignition type feeds intake: the one, temperature is low, controls 1100 degree after igniting in the dosage process, 1300 degree during lower than intensification; The 2nd, mass flow is large, and after igniting, at once continuous dosage, add to 50% load 15 minutes kinds, and mass flow is far longer than between temperature raising period.The 3rd, the time is short, kind contrast in 15 minutes 8 hours.The 4th, avoided dry combustion method process in the former process that feeds intake (after Texaco is flame-out to 1.5～2 hours that feed intake).
The safety analysis of igniting feeding mode:
1. start-up process: original interlocking system is mainly to carry out safeguard protection when vapourizing furnace is stopped; when going into operation; (unique difference is exactly that to add the speed of material to have obvious different substantially for its security and igniting feeding mode; from this point, slowly adding to 50% material in 15 minutes kinds should be more safer than add 50 load materials in moment).After changing the igniting feeding mode into, the security measuress such as original nitrogen plug securing system and oxygen valve leak test, the displacement of C1 tower nitrogen must retain.Owing to there not being Texaco's burner link of falling the blind plate of stopping working, vapourizing furnace nitrogen replacement link can be removed.
2. shut-down process: the parking safety protection function of original interlocking system all retains, once stop sign out, 3 material quick-break valve cuts out, oxygen, Sweet natural gas material be in dissengaged positions, nitrogen plug securing system and steaming out function retain.The security of stopping like this is with original the same.
3.C1 tower nitrogen displacement and Texaco's burner igniting all will be used the scare line that goes into operation, both must intersect and carry out, we have ripe operating experience this respect, and the pipeline that once repeatedly applies a torch before feeding intake is heated up, and make intensification and C 1 tower nitrogen displacement reasonably intersect and carry out.This operation is no problem.As used suction pump, change the suction pump warming temperature into and get final product.
4. the Control for Kiln Temperature during dosage to 50% load gradually, similar our Control for Kiln Temperature of Texaco's burner temperature rise period of this process, for safety, the dosage stage is carried out the dosage operation according to furnace temperature and oxygen/Sweet natural gas ratio gradually, and the lower furnace temperature of control, Control for Kiln Temperature, at 1000～1100 degree, is raised to normal temps by temperature after adding to 50% load again.In order to ensure the operability of dosage operation, need be transformed burner oxygen pipeline and natural gas line.
5. because Sweet natural gas and oxygen may fluctuation by a relatively large margin occur because flow rate fluctuation causes oxygen/Sweet natural gas ratio under low discharge, for anti-block/too high furnace temperature overtemperature that causes of Sweet natural gas ratio, feed intake and the dosage process should be controlled than hypoxemia/Sweet natural gas ratio, due to the torch emptying of all reducing internal heat of the outlet of vapourizing furnace now process gas, furnace temperature is low, and to cause exporting in process gas the methane content height out of question.After load adds to 50%, then more than furnace temperature is increased to 1300 degree.
The transformation that need carry out existing gasification installation:
1. need carry out modernization overlay to the interlocking system of original vapourizing furnace; The parking safety protection function of original interlocking system all retains, and nitrogen plug defencive function retains, parking steaming out function retains; Certainly similar two operating method of synthesizing the low interlocking of principal goods material flow are removed, are changed in the loop of removing of interlock action removal, oxygen and the low interlocking of gas discharge fed intake.
2. in order to ensure the operability of dosage operation, need be transformed burner oxygen pipeline and natural gas line.A kind of scheme is to increase little by-pass line on burner oxygen pipeline and natural gas line, igniting and dosage initial stage (tolerance adds to 2000 sides) are used little by-pass line, the dosage later stage (2000 add to 9000 sides) is used main line, and this scheme does not need to use Sweet natural gas and air line for present intensification.
3. use Sweet natural gas and air for present intensification when another kind of scheme is igniting, then in the situation that do not exit and heat up with Sweet natural gas and air, add gradually Sweet natural gas and oxygen principal goods material, after Sweet natural gas adds to 1000 sides, exit and heat up with Sweet natural gas and air, then break blind plate.This scheme need be considered and alter mutually risk, as long as maintenance 4112-PCV-10 standard-sized sheet, the vapourizing furnace internal pressure can, over 3 kilograms, be not can not scurry into to heat up with Sweet natural gas and air line.
4. in sum, burner oxygen and Sweet natural gas should increase little by-pass line, and increasing the latter two ignition schemes all can be unaffected.
5. other side does not need large transformation.
6. operational details is also needed to carry out refinement.
In sum, do not need device hardware is carried out to large transformation, the groundwork amount of transformation and difficult point are on vapourizing furnace interlocking and working specification.
In a word, the change of this feeding mode, can carry out many benefits to the natural gas gasifying furnace zone.After interlocking, pipeline modification and operation change, security fundamental sum interlocking feeding mode is the same, from technology and security standpoint, is feasible.
Claims (2)
1. take the feeding method of the Texaco gasifier that Sweet natural gas is raw material for one kind; It is characterized in that:
The driving step is:
(1) vapourizing furnace heats up, and with the intensification burner, rises to 1000～1100 degree;
(2) set up the water cycle between vapourizing furnace and C1 tower, or build up in advance;
(3) change Texaco's burner, after changing, with Texaco's burner igniting, control temperature 1100 degree after igniting, use scare line;
(4) increase gradually Sweet natural gas and amount of oxygen, control temperature 1100 in the dosage process, add to gradually the former load that feeds intake, 15 minutes kinds of whole dosage process complete, and add to the former process of feeding intake after 50% of loading that feeds intake and complete;
(5) open the process gas main valve, gasification system starts to boost, and synchronously improves gasifier temperature gradually in the process of boosting until 1350 degree;
(6) pressure is cut water, is cut gas after being raised to.
2. feeding method of take the Texaco gasifier that Sweet natural gas is raw material according to claim 1; It is characterized in that: increase little by-pass line on burner oxygen pipeline and natural gas line, igniting and dosage initial stage, when adding to 2000 side, tolerance uses little by-pass line, in the dosage later stage, when adding to 9000 side from 2000, tolerance uses main line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194405.4A CN103484161A (en) | 2012-06-13 | 2012-06-13 | Feeding method of Texaco gasification furnace using natural gas as raw material |
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| CN201210194405.4A CN103484161A (en) | 2012-06-13 | 2012-06-13 | Feeding method of Texaco gasification furnace using natural gas as raw material |
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| CN201210194405.4A Pending CN103484161A (en) | 2012-06-13 | 2012-06-13 | Feeding method of Texaco gasification furnace using natural gas as raw material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305697A (en) * | 2019-07-15 | 2019-10-08 | 新能能源有限公司 | The control method that feeds intake of catalytic coal gasifaction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715745A (en) * | 2004-07-01 | 2006-01-04 | 气体产品与化学公司 | Staged combustion system with ignition-assisted fuel lances |
-
2012
- 2012-06-13 CN CN201210194405.4A patent/CN103484161A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715745A (en) * | 2004-07-01 | 2006-01-04 | 气体产品与化学公司 | Staged combustion system with ignition-assisted fuel lances |
Non-Patent Citations (1)
| Title |
|---|
| 王建忠: ""天然气部分氧化制合成气的工业应用"", 《石油与天然气化工》, vol. 31, no. 3, 31 December 2002 (2002-12-31), pages 114 - 115 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110305697A (en) * | 2019-07-15 | 2019-10-08 | 新能能源有限公司 | The control method that feeds intake of catalytic coal gasifaction |
| CN110305697B (en) * | 2019-07-15 | 2020-11-03 | 新能能源有限公司 | Feeding control method for catalytic coal gasification |
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Application publication date: 20140101 |