CN102071062B - Method for Texaco gasification process oven - Google Patents
Method for Texaco gasification process oven Download PDFInfo
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- CN102071062B CN102071062B CN2010102185983A CN201010218598A CN102071062B CN 102071062 B CN102071062 B CN 102071062B CN 2010102185983 A CN2010102185983 A CN 2010102185983A CN 201010218598 A CN201010218598 A CN 201010218598A CN 102071062 B CN102071062 B CN 102071062B
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- valve
- speeding
- interlocking
- venting
- baker
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention relates to the chemical industry field of methanol preparation from coal, more particularly to a method for a Texaco gasification process oven. The oven adopts relief gas as fuel gas and is provided with a pressure main pipe and an interlocking fast-closing cutoff valve to guarantee the procedure safety of the oven, and a flame monitor is installed on a preheating nozzle and is controlled by the interlocking fast-closing cutoff valve. The method disclosed in the invention solves the safety problem of relief gas oven, and achieves the purposes of saving energy, reducing consumption and protecting environment.
Description
Technical field
The present invention relates to coal methanol chemistry processed field, particularly a kind of method for Texaco gasification process oven.
Background technology
Inferior of Texaco Gasification Technology is to use at present the comparatively ripe former coal Gasification Technology in Retrospect of a cover, and its characteristics are raw coal is worn into slurry, with pure oxygen the incomplete oxidation reaction occurs under High Temperature High Pressure by a certain percentage in vapourizing furnace, makes mainly with CO, H
2For the raw gas of effective gas, as the unstripped gas of follow-up workshop section.Because reaction needed is at high temperature carried out, so the baker of Texaco gasifier and hot standbyly then seem particularly important.Texaco's technique adopts diesel oil or liquefied gas as main baker fuel when stopping using vapourizing furnace at present, and its fuel consumption is larger, and the baker cost is high.Take the 2800mm stove as example, the vapourizing furnace temperature rise rate is 28 ℃/h, and a vapourizing furnace rises to 1200 ℃ from normal temperature, since 500 ℃ of oil nozzle oeprations at full load, finishes by 48 hours, and its consumption diesel oil amount is: 0.1 * 6+0.3 * 42=13.2 (ton).Diesel oil per ton is by 8000 yuan, and drying by the fire one stove oil amount value is 10.56 ten thousand yuan.By 10 furnace gauges of annual baking, annual baker expense is ten thousand yuan of 10.56 * 10=105.6.And diesel oil baker adjusting function is poor, and the cold zone temperature rise rate is difficult to control in the early stage, has the problems such as interior temperature rise of short period of time is too fast, fire extinguishing, can not satisfy vapourizing furnace brick intensification requirement.Because the liquefied gas calorific value is low than diesel oil, if then expense is higher with the liquefied gas baker.
The synthetic film recycle section of coal methanol technics processed produces the venting of speeding, and it consists of (V%):
H
2：50 CO：23 CH
4：4 CO
2：3 N
2：14 Ar：5
Take 200,000 ton/years of methanol projects as example, discharge quantity reaches 1500Nm3/h but the maximum non-infiltration of by-product is speeded, and this is flammable, and the venting of speeding is generally delivered to torch burning emptying as waste gas, causes great waste.
Such as the employing direct baker of speeding to exit, there is again the potential safety hazard of blast.If synthetic and film recovery system operating mode has change in the baker process, the blow off pressure fluctuation of speeding might cause the venting of speeding to interrupt in short-term, will producer implode accident.
Summary of the invention
Deficiency for prior art exists the object of the present invention is to provide a kind of method for Texaco gasification process oven, and this venting of inventing to speed is fuel gas, not only energy-conservation but also safety.
Technical scheme of the present invention comprises the steps:
(1), the venting of speeding that come by synthetic film recycle section exits through speeding and delivers to gasification workshop section behind the voltage stabilizing of surge tank buffering, the current stabilization, the venting of speeding more than needed drains into torch by pressure regulator valve;
(2), the air inlet battery limit (BL) speed the venting behind flow measurement, load cell and quick closing valve trip valve, enter spark arrester, behind pressure regulator valve and manual valve, enter respectively again center and the outer annular space of preheating burner, enter vapourizing furnace as baker fuel gas;
(3), between spark arrester and pressure regulator valve, be furnished with a pilot burner pipeline, and a manual variable valve is housed;
(4), in the baker process, set and to speed to exit the baker interlocking.
The described baker interlocking of speeding to exit comprises the steps:
A, pressure regulator valve are selected the fail close pattern, in case instrument air is disconnected, valve is in closing condition immediately, guarantee the security of system operation;
Be provided with the pressure interlocking between b, load cell and quick closing valve trip valve, when total pipe pressure is low, cut off immediately the external venting of speeding;
C, at the preheating burner flame monitor has been installed, the flame monitoring signal is in case disappear, then quick closing valve trip valve interlocking close.
Beneficial effect of the present invention is:
1, waste gas re-uses, and has reduced production cost;
A 2800mm vapourizing furnace rises to 1200 ℃ from normal temperature, since 500 ℃ of oil nozzle oeprations at full load, finishes by 48 hours, and its consumption diesel oil amount is:
0.1 * 6+0.3 * 42=13.2 (ton).
Diesel oil per ton is by 8000 yuan, and drying by the fire one stove oil amount value is 10.56 ten thousand yuan.
By 10 furnace gauges of annual baking, annual ten thousand yuan of the baker expense 10.56 * 10=105.6 that save
2, reduce discharging the carbonic acid gas of nearly 150 tons of diesel oil discharging, also reduced simultaneously the discharging of speeding to exit, obtained very large environmental benefit.
3, the flame detector of installing has prevented that effectively flame from extinguishing suddenly, speeds to exit and closes untimely and explosion hazard generation that cause.
4, be convenient to the to stop using long term thermal of stove is standby, and restart up is about more than 48 hours.
Description of drawings
Figure is process flow sheet of the present invention.
Marginal data:
17,18,19 is 8 word blind plates
2, the 7,8,11,12,13,14,15, the 16th, manual valve
20, the 21,22,23,24, the 25th, the gas relief line of speeding
4, the 6th, pressure regulator valve
26, the 27, the 28th, interlocking signal
The 3rd, the quick closing valve trip valve
The 5th, spark arrester
The 32nd, safety valve
29, the 30th, load cell
The 31st, the flow measurement element
The 9th, flame monitor
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention is described in detail.
As shown in the figure, entered through 8 word blind plates and manual valve by the synthetic venting of speeding that comes and to speed to exit surge tank 1, deliver to gasification workshop section behind pressure regulator valve 4 voltage stabilizings, current stabilization, the venting of speeding more than needed drains into torch by pressure regulator valve 4; Speed venting by the hand off valve
2 enter the gasification battery limit (BL), enter spark arrester 5 behind flow measurement, load cell and quick closing valve trip valve 3, enter respectively center and the outer annular space of preheating burner behind pressure regulator valve 6 and manual valve again, enter vapourizing furnace as baker fuel gas; Be furnished with a pilot burner pipeline at spark arrester 5 and 6 of pressure regulator valves in addition, and a manual variable valve is housed, play combustion-supporting effect at baker initial stage pilot burner.
Embodiment 1
At first confirm to speed blow off pressure and composition is qualified and deliver to the gasification battery limit (BL), it is qualified that the normal and burner hearth of interlocking debugging is taken out negative displacement, on-the-spot confirm to speed gas-discharge hand main valve 2, quick-closing valve 3, variable valve 6, speed to exit to preheating burner center hand valve 7, speed to exit to the preheating burner annular space hand valve 8 and pilot burner hand valve 10 and close, the gas-discharge hand main valve 2 of speeding is slowly opened at the scene, middle console keyboard is driven quick-closing valve 3, on-the-spot confirm that burner hearth is crack pilot burner hand valve 10 after little negative pressure, confirm to speed venting by behind the pilot burner, light pilot burner, pilot burner is inserted the preheating burner; Confirm that flame detector 9 signals are normal, other parameter adjustments are normal, interlocking comes into operation; By regulating pilot burner hand valve 10 control temperature rise rates.
Embodiment 2
At first confirm to speed blow off pressure and composition is qualified and deliver to the gasification battery limit (BL), it is qualified that the normal and burner hearth of interlocking debugging is taken out negative displacement, gas-discharge hand main valve 2 is confirmed to speed in the scene, quick-closing valve 3, variable valve 6, speed to exit to preheating burner center hand valve 7, speed to exit to preheating burner annular space hand valve 8 and pilot burner hand valve 10 cuts out, the gas-discharge hand main valve 2 of speeding is slowly opened at the scene, middle console keyboard is driven quick-closing valve 3, on-the-spot confirm that burner hearth is crack pilot burner hand valve 10 after little negative pressure, confirm to speed venting by behind the pilot burner, light pilot burner, pilot burner is inserted the preheating burner, by regulating pilot burner hand valve 10 control temperature rise rates.When burner hearth continues to be warming up to 150 ℃, middle control confirms that flame detector 9 signals are normal, the burning of on-the-spot affirmation pilot burner is normal, and pilot burner flame transferred to maximum, middle control suitably strengthens combustion chamber draft, and the scene is opened and speeded to exit to preheating burner center hand valve 7 and the annular space hand valve 8 to the preheating burner of speeding to exit, and middle control is by pressure regulator valve 6, to speed to exit and send into burner hearth through the preheating burner, and then the control temperature rise rate.
At first confirm to speed blow off pressure and composition is qualified and deliver to the gasification battery limit (BL), it is qualified that the normal and burner hearth of interlocking debugging is taken out negative displacement, gas-discharge hand main valve 2 is confirmed to speed in the scene, quick-closing valve 3, variable valve 6, speed to exit to preheating burner center hand valve 7, speed to exit to preheating burner annular space hand valve 8 and pilot burner hand valve 10 cuts out, the gas-discharge hand main valve 2 of speeding is slowly opened at the scene, middle console keyboard is driven quick-closing valve 3, on-the-spot confirm that burner hearth is crack pilot burner hand valve 10 after little negative pressure, confirm to speed venting by behind the pilot burner, light pilot burner, pilot burner is inserted the preheating burner, confirm that the flame detector signal is normal, by regulating pilot burner hand valve 10 control temperature rise rates, monitor and adjust each operating parameters in normal range.The pressure of exitting when speeding is lower than 0.35Mpa for PT02, or flame detector 9 no signals, and then safety interlocking triggers, and sends warning, and quick-closing valve cuts out rapidly and cuts off the venting of speeding, and has more than needed and speeds to exit through pressure regulator valve 4 emptying to torch.Meanwhile, middle control manual-lock pressure regulator valve 6, the scene is closed and is speeded to exit to preheating burner center hand valve 7 and the annular space hand valve 8 to the preheating burner of speeding to exit, and the extraction pilot burner is placed on the outdoor ventilation place, middle control strengthens more than the combustion chamber draft 5min, guarantee burner hearth take out negative displacement qualified after, repeat embodiment two steps.
Claims (2)
1. a method for Texaco gasification process oven is characterized in that, comprises the steps:
(1), the venting of speeding that come by synthetic film recycle section exits through speeding and delivers to gasification workshop section behind the voltage stabilizing of surge tank buffering, the current stabilization, the venting of speeding more than needed drains into torch by pressure regulator valve;
(2), the air inlet battery limit (BL) speed the venting behind flow measurement, load cell and quick closing valve trip valve, enter spark arrester, behind pressure regulator valve and manual valve, enter respectively again center and the outer annular space of preheating burner, enter vapourizing furnace as baker fuel gas;
(3), between spark arrester and pressure regulator valve, be furnished with a pilot burner pipeline, and a manual variable valve is housed;
(4), in the baker process, set and to speed to exit the baker interlocking.
2. method for Texaco gasification process oven according to claim 1 is characterized in that, the described baker interlocking of speeding to exit comprises the steps:
A, pressure regulator valve are selected the fail close pattern, in case instrument air is disconnected, valve is in closing condition immediately, guarantee the security of system operation;
Be provided with the pressure interlocking between b, load cell and quick closing valve trip valve, when total pipe pressure is low, cut off immediately the external venting of speeding;
C, at the preheating burner flame monitor has been installed, the flame monitoring signal is in case disappear, then quick closing valve trip valve interlocking close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102185983A CN102071062B (en) | 2010-07-02 | 2010-07-02 | Method for Texaco gasification process oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102185983A CN102071062B (en) | 2010-07-02 | 2010-07-02 | Method for Texaco gasification process oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102071062A CN102071062A (en) | 2011-05-25 |
| CN102071062B true CN102071062B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102185983A Expired - Fee Related CN102071062B (en) | 2010-07-02 | 2010-07-02 | Method for Texaco gasification process oven |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107674709A (en) * | 2017-10-31 | 2018-02-09 | 天津渤化永利化工股份有限公司 | Broken coal gasification uses device and handling process of the partial CO 2 as gasifying agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923974A (en) * | 2005-09-01 | 2007-03-07 | 中国科学院工程热物理研究所 | Method of producing chemical product by double fuel reforming chemical system |
| CN101050388A (en) * | 2006-04-07 | 2007-10-10 | 山东华鲁恒升化工股份有限公司 | Air gas recovery system of gasometer stove, and new technique of using the system |
| CN101649225A (en) * | 2009-08-31 | 2010-02-17 | 水煤浆气化及煤化工国家工程研究中心 | Hot wall type gasifier baker control system |
-
2010
- 2010-07-02 CN CN2010102185983A patent/CN102071062B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923974A (en) * | 2005-09-01 | 2007-03-07 | 中国科学院工程热物理研究所 | Method of producing chemical product by double fuel reforming chemical system |
| CN101050388A (en) * | 2006-04-07 | 2007-10-10 | 山东华鲁恒升化工股份有限公司 | Air gas recovery system of gasometer stove, and new technique of using the system |
| CN101649225A (en) * | 2009-08-31 | 2010-02-17 | 水煤浆气化及煤化工国家工程研究中心 | Hot wall type gasifier baker control system |
Non-Patent Citations (2)
| Title |
|---|
| 吴同舫.德士古气化炉原始烘炉影响因素浅析.《化学工程师》.2010,(第5期),76-78. |
| 德士古气化炉原始烘炉影响因素浅析;吴同舫;《化学工程师》;20100525(第5期);76-78 * |
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| CN102071062A (en) | 2011-05-25 |
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