CN101157675A - Two-set benzoic anhydride reaction device employing public air feeding system and operation method thereof - Google Patents
Two-set benzoic anhydride reaction device employing public air feeding system and operation method thereof Download PDFInfo
- Publication number
- CN101157675A CN101157675A CNA2007101898233A CN200710189823A CN101157675A CN 101157675 A CN101157675 A CN 101157675A CN A2007101898233 A CNA2007101898233 A CN A2007101898233A CN 200710189823 A CN200710189823 A CN 200710189823A CN 101157675 A CN101157675 A CN 101157675A
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- China
- Prior art keywords
- reaction unit
- phthalic anhydride
- steam turbine
- cover
- air feed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims description 10
- NOGFHTGYPKWWRX-UHFFFAOYSA-N 2,2,6,6-tetramethyloxan-4-one Chemical compound CC1(C)CC(=O)CC(C)(C)O1 NOGFHTGYPKWWRX-UHFFFAOYSA-N 0.000 title 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims abstract description 54
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000011017 operating method Methods 0.000 abstract 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Classifications
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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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- Furan Compounds (AREA)
Abstract
The invention relates to a device which adopts two sets of phthalic anhydride reaction devices of a common wind supply system and an operating method. The device consists of two sets of phthalic anhydride reaction devices and fans which are matched with the phthalic anhydride reaction devices, the invention further comprises a motor and a steam turbine, which are respectively connected with two fans in series; the fan which is connected with the motor in series is connected with one set of the phthalic anhydride reaction device, a steam outlet of the set of the reaction device is connected with the steam turbine; the steam outlet of the other set of phthalic anhydride reaction device is also connected with the steam turbine; the fans which are connected with the steam turbine in series are respectively connected with the two sets of reaction devices. As the invention only needs one motor to provide the starting energy for one set of the reaction device, a subsequent reaction device can be driven for operation by the regulation of a generated steam during the operation of a device, finally, the device completely relies on the generated steam of the device to realize the wind supply, thus avoiding the waste of the steam energy, reducing the energy consumption, saving the investment of the equipments and reducing the production cost by more than 30 percent simultaneously.
Description
(1) technical field
The present invention relates to adopt two cover phthalic anhydride reaction unit and operation methods thereof of public air feed system.
(2) background technology
Phthalic anhydride is produced, mostly be naphthalene oxidation style or o xylene oxidation method, adopt the manufacturer of this technology at present, when being phthalic anhydride reaction unit air feed, the whole of employing are that a cover production equipment is joined a cover electric motor, and this method wind supply quantity is relatively more sufficient, but electric quantity consumption is excessive, production cost drops into high, and the superheated vapour that produces in producing effluxes and can not effectively utilize, and has caused the waste of thermal source.
(3) summary of the invention
The object of the present invention is to provide a kind of two cover phthalic anhydride reaction units that adopt public air feed system, can effectively utilize thermal source, can under the situation that guarantees ordinary production, reduce energy consumption, reduce production costs again.
The technical solution used in the present invention is as follows:
Adopt two cover phthalic anhydride reaction units of public air feed system, comprise two cover phthalic anhydride reaction units and with the supporting blower fan of phthalic anhydride reaction unit, also comprise an electric motor and a steam turbine, both connect with two typhoon machines respectively; Be connected to a wherein cover phthalic anhydride reaction unit with the blower fan of motor in series, the vapour outlet of this cover reaction unit is connected to steam turbine; The vapour outlet of an other cover phthalic anhydride reaction unit also is connected to steam turbine; Be connected to two cover reaction units respectively with the placed in-line blower fan of steam turbine.
Be provided with the valve of quantity-adjustable or quantity of steam size on each connection line as the case may be.
The energy that air feed system of the present invention only needs an electric motor to provide initial reaction unit to start, an other cover reaction unit produces steam in the time of can leaning on the device operation adjusting drives operation, realizes that finally a steam turbine drives blower fan and provides air feed for two cover phthalic anhydride reaction unit operations.
The present invention also provides the operation method of two cover phthalic anhydride reaction units of the public air feed system of a kind of described employing: give wherein a cover reaction unit air feed by electric motor earlier, after reaching assumed load, utilize the steam of its generation to open steam turbine, drive blower fan by steam turbine and give another set of reaction unit air feed, the reaction steady load for the treatment of this covering device to assumed load or more than, and when vapor pressure of this cover reaction unit is not less than another set of reaction unit and offers the vapor pressure of steam turbine, overlap the switching of reaction unit self steam supply steam turbine thus, realize air feed; Reduction is by the load of the reaction unit of electric motor air feed, and fracture also withdraws from the electric motor air feed; The air quantity that guarantees reaction unit in service is stable, make the placed in-line supporting blower fan of steam turbine be the reaction unit air feed of former cause electric motor air feed simultaneously, and when increasing air output gradually to set(ting)value, again drive to produce, realize that so far it is two cover phthalic anhydride reaction unit air feeds simultaneously that a steam turbine drives blower fan.
Preferably, described assumed load can be set to 60～100gNm
-3
The present invention has following advantage with respect to prior art:
Owing to only need an electric motor that the wherein energy of a cover reaction unit startup is provided in the system of the present invention, thereafter reaction unit produces steam in the time of can leaning on the device operation adjusting drives operation, the last steam that produces by device self fully offers steam turbine and realizes air feed, therefore both avoided the waste of steam energy, reduced electric energy consumption again, saved facility investment simultaneously, reduced production costs more than 30%.
(4) description of drawings
Fig. 1 is two cover phthalic anhydride reaction unit synoptic diagram of the public air feed system of employing of the embodiment of the invention 1.
(5) embodiment:
Below with specific embodiment technical scheme of the present invention is described, but protection scope of the present invention is not limited thereto:
Embodiment 1
Adopt two cover phthalic anhydride reaction units of public air feed system, comprise 2# phthalic anhydride reaction unit, electric motor 2, steam turbine 4 and the two typhoon machines 1,3 of 1# phthalic anhydride reaction unit, phthalic anhydride reactor 7 and its vapor superheater 8 compositions that phthalic anhydride reactor 5 and its vapor superheater 6 are formed.The vapour outlet that is connected to the reactor 5,6 of 1# phthalic anhydride reaction unit after electric motor 2 and blower fan 1 series connection is connected to steam turbine 4; The vapour outlet of 2# phthalic anhydride reaction unit also is connected to steam turbine; Be connected to two cover reaction units respectively with the placed in-line blower fan 3 of steam turbine.
During use, start electric motor 2 promotion blower fans 1 and be reactor 5 air feeds of 1# phthalic anhydride reaction unit, keep valve K3, K4, K5 to close, K1, K2 open, when phthalic anhydride reactor 5 is produced the 60～100gNm that loads
-3The time, provide steam by the vapor superheater 6 of 1# phthalic anhydride reaction unit, open valve K5, K6, K7, close K8, start steam turbine 4, drag blower fan 3 by steam turbine 4 then, give phthalic anhydride reactor 7 air feeds.
Whether the vapor superheater 8 outlet valve K8 that check 2# phthalic anhydride reaction unit close (should close), open outlet blow-off valve and bottom blow-down valve then, press in slowly opening and wrap each admission valve of vapor superheater, carry out the equipment preheating, the reaction steady load for the treatment of this covering device is to assumed load, and exhaust vapour is a superheated vapour (net gas) and continual and steady, when vapor pressure is not less than vapor superheater 8 and offers the vapor pressure of steam turbine, slowly open induction valve K8, periodical operation.Observe steam turbine 4 running conditions, and the throttle (steam) temperature variation tendency, when steam turbine 4 operations are normal, after the parameter vary stable, slowly turn down the vapor superheater 6 induction valve door K7 of 1# phthalic anhydride reaction unit, observe parameter simultaneously and change.So intermittently regulate repeatedly, finally finish the steam supply blocked operation, it is personal that realization 2# phthalic anhydride reaction unit generation steam drags steam turbine 4.
After the steady running of 2# phthalic anhydride reaction unit, 1# phthalic anhydride reaction unit can carry out the load down operation, when load drops to 40gNm
-3, close charging valve K2, play cyclical operation, treat to move back wind when phthalic anhydride reactor 5 focuses drop to 380 ℃, and have a power failure according to circumstances motivation 2 and blower fan 1, and close relevant butterfly valve, possess the driving condition.
Regulate blower fan 3, improve air quantity 1000～1500Nm
3H
-1, crack 2# phthalic anhydride reaction unit air quantity can descend to 1# phthalic anhydride reaction unit air-supply valve K4, carries air quantity so repeatedly, blows, falls air quantity and repeatedly regulate, and makes 1# phthalic anhydride reaction unit air quantity reach 36000Nm
3H
-1, guarantee in the operating process that the 2# phthalic anhydride plant is not less than 36000Nm
3H
-1
1# phthalic anhydride reaction unit feeds intake and drives to operate, and load slowly improves, until reaching normal load.Final this air feed system realizes that a steam turbine promotes blower fan and provides competent air quantity for 1# and 2# phthalic anhydride reaction unit simultaneously, guarantees to produce normal operation.
Mode of connection in the present embodiment makes 1# phthalic anhydride reaction unit be equal to 2# phthalic anhydride reaction unit, when only needing modifier to start to the switching of different valves, make electric motor 2 placed in-line blower fans 1 be 2# phthalic anhydride reaction unit air feed earlier, principle is the same then, can realize that at last it is two cover phthalic anhydride reaction unit air feeds simultaneously that steam turbine 4 promotes blower fan 3.
Claims (3)
1. adopt two cover phthalic anhydride reaction units of public air feed system, comprise two cover phthalic anhydride reaction units and with the supporting blower fan of phthalic anhydride reaction unit, it is characterized in that also comprising an electric motor and a steam turbine, both connect with two typhoon machines respectively; Be connected to a wherein cover phthalic anhydride reaction unit with the blower fan of motor in series, the vapour outlet of this cover reaction unit is connected to steam turbine; The vapour outlet of an other cover phthalic anhydride reaction unit also is connected to steam turbine; Be connected to two cover reaction units respectively with the placed in-line blower fan of steam turbine.
2. the operation method of two cover phthalic anhydride reaction units of the public air feed system of employing as claimed in claim 1, it is characterized in that described method is: earlier give wherein a cover reaction unit air feed by electric motor, after reaching assumed load, utilize the steam of its generation to open steam turbine, drive blower fan by steam turbine and give another set of reaction unit air feed, the reaction steady load for the treatment of this covering device to assumed load or more than, and when vapor pressure of this cover reaction unit is not less than another set of reaction unit and offers the vapor pressure of steam turbine, overlap the switching of reaction unit self steam supply steam turbine thus, realize air feed; Reduction is by the load of the reaction unit of electric motor air feed, and fracture also withdraws from the electric motor air feed; The air quantity that guarantees reaction unit in service is stable, make the placed in-line supporting blower fan of steam turbine be the reaction unit air feed of former cause electric motor air feed simultaneously, and when increasing air output to set(ting)value gradually, drive again to produce, realize that it is two cover phthalic anhydride reaction unit air feeds simultaneously that steam turbine drives blower fan.
3. the operation method of two cover phthalic anhydride reaction units of the public air feed system of employing as claimed in claim 2 is characterized in that described assumed load is 60～100gNm
-3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101898233A CN100558719C (en) | 2007-10-22 | 2007-10-22 | Adopt two cover phthalic anhydride reaction unit and operation methods thereof of public air feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101898233A CN100558719C (en) | 2007-10-22 | 2007-10-22 | Adopt two cover phthalic anhydride reaction unit and operation methods thereof of public air feed system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101157675A true CN101157675A (en) | 2008-04-09 |
| CN100558719C CN100558719C (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101898233A Expired - Fee Related CN100558719C (en) | 2007-10-22 | 2007-10-22 | Adopt two cover phthalic anhydride reaction unit and operation methods thereof of public air feed system |
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| Country | Link |
|---|---|
| CN (1) | CN100558719C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174903A (en) * | 2011-01-18 | 2011-09-07 | 东南大学 | Bootstrap system using steam turbine to directly drive sintering cooling fan |
-
2007
- 2007-10-22 CN CNB2007101898233A patent/CN100558719C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174903A (en) * | 2011-01-18 | 2011-09-07 | 东南大学 | Bootstrap system using steam turbine to directly drive sintering cooling fan |
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| Publication number | Publication date |
|---|---|
| CN100558719C (en) | 2009-11-11 |
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| C06 | Publication | ||
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Granted publication date: 20091111 Termination date: 20121022 |