CN103127896A - PVC polymerization kettle stirring dragging method - Google Patents
PVC polymerization kettle stirring dragging method Download PDFInfo
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- CN103127896A CN103127896A CN2013100649120A CN201310064912A CN103127896A CN 103127896 A CN103127896 A CN 103127896A CN 2013100649120 A CN2013100649120 A CN 2013100649120A CN 201310064912 A CN201310064912 A CN 201310064912A CN 103127896 A CN103127896 A CN 103127896A
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Abstract
The invention discloses a PVC polymerization kettle stirring dragging method, which is characterized in that a traditional PVC polymerization first order load device is changed for a steam driven steam turbine, supply and drainage pump key equipments in polymerization kettle stirring and water circulating system can be dragged by a steam turbine to obtain the power, namely the steam turbine drags the polymerization kettle for stirring and provides the kinetic energy for a circulating water supply pump. The PVC polymerization kettle stirring dragging method can effectively make up the defect that the PVC polymerization kettle stirring device is traditionally depended on the electric energy, hidden trouble generated by power-lossing of PVC polymerization can be solved, surplus steam can be used in a reasonable mode, the consumption of the electric energy is reduced, and the polymerization apparatus safety, continuous development and long-time cycle operation can be effectively promoted.
Description
Technical field
The present invention relates to a kind of PVC polymeric kettle and stir the method that drags.
Background technology
In the prior art, progressively enlarge along with polyvinyl chloride resin is production-scale, the quantity of the production equipment polymeric kettle that it is crucial increases, and single still capacity maximizes, the monomer that feeds intake increases, thereby the loss quantity when meeting accident accident is larger, processes comparatively difficulty afterwards.PVC polymerization continuous production of the prior art is strong, raw material and intermediate products mostly are inflammable and explosive substances, and polyvinyl chloride resin production reaction belongs to chain reaction, continue heat release in its course of reaction, produce HTHP during normal production, in case the situation of electric breaking, dead electricity occurs, will directly cause stirring fault and recirculated water can not normal supply, heat can't in time disperse in still, cause polymeric kettle at short notice temperature and pressure sharply rise.After still voltage rise height, some valve is very time-consuming, effort when artificial the unlatching, adds that the automaticity of polyplant is higher, and personnel on duty are relatively less, more is unfavorable for artificial timely the processing.If do not give first-aid measures this moment, the polymeric kettle safety valve will take-off, cause the serious accidents such as flange leakage one time, cause a large amount of VCM monomers to enter in atmosphere, contaminated environment not only, and vinyl chloride gas belongs to inflammable explosive article, and the static that produces when monomer is revealed has the danger that sets off an explosion, and directly threatens the person and property safety.Therefore, the PVC polymeric kettle maximizes to produce and have very large potential safety hazard when emergency operation, guarantees that its production safety is very important.
Traditional PVC polymerization production device all adopts dual power supply.By mains supply, when the evagination that complies with one's wishes is met the dead electricity situation, start immediately standby emergency power supply when normal production, keep normal operation to guarantee the current consuming apparatus such as agitation equipment of polymerization vessel, be convenient in time take measures to carry out emergency processing.Generally speaking, as not powering by immediate recovery, should take the necessary measures decidedly after dead electricity 5min, stop polymerisation and pressure release discharging, prevent that peril from occuring.Yet, the dead electricity situation is in case occur, stir in still and stop, control reaction even if drop into terminator, adopt NO gas as the urgent terminator of reaction in a kind of PVC polymeric kettle fault emergent management method as disclosed in CN102702396A, reaction heat also can't obtain timely and effective diffusion, and resin precipitated is in the polymeric kettle bottom, may stop up discharge opening, affect discharging, fall the emergency operation such as still.For preventing unexpected dead electricity, need to ensure that dual power supply guarantees to produce, equipment investment is large, and the new device double-cricuit supply realizes having certain difficulty.After the dead electricity situation occurs, drop into emergency power supply and realize the running of one-level load equipment, when various device starts simultaneously, emergency power supply can be jumped electricity because of excess load, and this moment, polymeric kettle was difficult to controlled.Also may run into the emergency without any prediction power supply signal in production, adopt an effective measure under extreme case or to control polymeric kettle emptying particularly important, the emptying manipulation contaminated environment can cause harmful effect and economic loss.
Summary of the invention
The object of the invention is to for improving from producing motivational guarantee, solve the potential safety hazard that the PVC device causes because of dead electricity in normal productive process and produce in other potential safety hazards that may run into, avoid under abnormal conditions polymeric kettle out of control.
Use conventional P VC polymerization one-level load equipment instead the steam drive steam turbine, polymeric kettle stirs, use steam turbine instead for row's pump emphasis equipment in circulation drags acquisition power, namely drags that polymeric kettle stirs and provides kinetic energy as the recirculated water supply-water pump take steam turbine.
Described steam turbine is connected with agitation equipment of polymerization vessel by the deceleration device of formulating.
The energy supply of described steam turbine is provided by the low pressure steam more than needed of the supporting boiler generation of chemical production device.
Described steam turbine is the back pressure type industrial steam turbine.
Described steam turbine adopts speed change to regulate, and the range of speeds is at 2400～4000r/min.
Beneficial effect of the present invention: can effectively make up PVC agitation equipment of polymerization vessel tradition and rely on the defective that electric energy exists, can solve the hidden danger that the PVC polymerization occurs because of dead electricity, drag that polymeric kettle stirs and provide kinetic energy as the recirculated water supply-water pump take steam turbine, can rationally use residue steam, reduce the consumption of electric energy.In the situation that many conditionalities, a stage load power mode of modifier will effectively promote polyplant safety, sustainable development.Thereby the present invention uses conventional P VC polymerization one-level load equipment instead the steam drive steam turbine and realizes dragging power, with the safety in production of this implement device.Consider from the angle of paradigmatic system safe operation, adopt industrial steam turbine to drag the danger that the devices such as polymeric kettle stirring, water circulating pump can prevent that tradition from bringing because of using electricity system interruption suddenly, unit energy utilizes boiler residual steam normally to move.Residue steam is used for driving steam turbine, drags power thereby obtain the polymerization stirring, further reasonably use the energy, changed polymeric kettle and dragged the situation that power relies on electric energy for a long time.Steam does not break because of dead electricity and stops, and boiler residual steam can normally move by assurance equipment, and when definite electric energy can't be supplied with, paradigmatic system had time enough according to rules, security of system hidden danger to be disposed.Steam turbine operation is steady, and the time between overhauls(TBO) is long, for the long-term operation that installs provides motivational guarantee.
The specific embodiment
In order to deepen that the present invention is understood, the present invention is described in further detail below in conjunction with the specific embodiment, but following content only is used for explanation the present invention, does not consist of the restriction to protection domain of the present invention.
With after agitation equipment of polymerization vessel is connected, polymeric kettle can obtain dragging motivational guarantee to steam turbine, realizes the normal operation of PVC polyplant by the deceleration device formulated.The chemical production device overwhelming majority is supporting boiler all, and this class device can provide low pressure steam more than needed, drags acquisition power to using steam turbine instead for row's pump emphasis equipment in polymeric kettle stirring, circulation in the present invention, and the energy supply guarantee is provided.
The boiler for producing operation mainly obtains steam, the normal operation auxiliary facility power consumption of boiler to consume coal.After steam generator system dead electricity situation occurs; steam generator system is progressively lowered the temperature until in the dead halt process; low pressure steam can not broken immediately and be stopped; steam pipe line can not reduce within a certain period of time; still be in normalization for the steam-powered agitation equipment of polymerization vessel of dependence, the operation of recirculated water supply-water pump; this just provides important equipment dynamic for normal production and the emergent management measure of polymerization, has ensured system safety operation.
Steam turbine is the rotary prime mover of utilizing steam thermal energy to do work, and its characteristics are that power is large, rotating speed is high, efficient is high, operate steadily, long service life, is widely used in drawing generator, air blast, water pump and as the machineries such as power of boats and ships.Adopt steam turbine, can make unit operation steady, accident rate is lower, generally can keep left and right overhaul in 3 years, has fully improved utilization rate of equipment and installations.
The industrial steam turbine operation is regulated very easy, the auxiliary devices such as 355KW left and right small steam turbine lubrication oil supply do not need external power supply, and electron speed regulator can join with the DCS central control system of company, thereby can monitor adjusting in the control room, can accomplish unattended duty, Hydraulic Adjustable Speed also can the teletransmission regulation and control.Industrial steam turbine can adopt according to the needs of machine utilization the speed change adjusting, and (range of speeds is 2400～4000r/min), and speed change is regulated equipment operating efficiency is improved, and reliability increases.
Back pressure type industrial steam turbine power is at 100KW～355KW, and this type unit, equipment move General Requirements equipment steam pressure at 0.98MPa～4.9MPa, require vapor (steam) temperature at 300 ℃～435 ℃.Particularly power is in the 355KW type, and requiring vapor (steam) temperature is 300 ℃, and pressure is 0.98MPa, consumes quantity of steam and is about 8.50t/h, and rated speed is in the 3000r/h left and right.This moment steam provide condition not high, easily obtain.
Embodiment 1
Produce the PVC device of 500,000 tons per year, configuration 105m
312 of polymeric kettles, it is 315KW that dragging motor is stirred in polymerization, production run every day 12 hours, year production 300 days, the electric energy that consumes is:
12×315×300×12=13608000(Kw.h)
Adopt the method for the invention, produce the PVC device polymerization stirring of 500,000 tons per year and will save 13608000 kilowatt hour electric energy every year;
Embodiment 2
Polymerization circulation quantity of circulating water is 3800～4500m
3/ h, lift 50m, 4, configuration 800KW motor, three open one standbyly, and be 300 days a year running time.
800×3×300＝720000(Kw.h)
Adopt the method for the invention, produce the PVC device water circulating pump of 500,000 tons per year and will save 720000 kilowatt hour electric energy every year.
Claims (5)
1. a PVC polymeric kettle stirs the method that drags, it is characterized in that: use conventional P VC polymerization one-level load equipment instead the steam drive steam turbine, polymeric kettle stirs, use steam turbine instead for row's pump emphasis equipment in circulation drags acquisition power, namely drags that polymeric kettle stirs and provides kinetic energy as the recirculated water supply-water pump take steam turbine.
2. a kind of PVC polymeric kettle as claimed in claim 1 stirs and drags method, it is characterized in that: described steam turbine is connected with agitation equipment of polymerization vessel by the deceleration device of formulating.
3. described a kind of PVC polymeric kettle as arbitrary in claim 1～2 stirs and drags method, it is characterized in that: the energy supply of described steam turbine is provided by the low pressure steam more than needed of the supporting boiler generation of chemical production device.
4. a kind of PVC polymeric kettle as claimed in claim 3 stirs and drags method, and it is characterized in that: described steam turbine is the back pressure type industrial steam turbine.
5. a kind of PVC polymeric kettle as claimed in claim 3 stirs and drags method, it is characterized in that: described steam turbine adopts speed change to regulate, and the range of speeds is at 2400～4000r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310064912.0A CN103127896B (en) | 2013-02-28 | 2013-02-28 | PVC polymerization kettle stirring dragging method |
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| CN201310064912.0A CN103127896B (en) | 2013-02-28 | 2013-02-28 | PVC polymerization kettle stirring dragging method |
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| CN103127896A true CN103127896A (en) | 2013-06-05 |
| CN103127896B CN103127896B (en) | 2015-06-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681866A (en) * | 2002-09-20 | 2005-10-12 | 三菱化学株式会社 | Process of producing polyesters |
| CN101109966A (en) * | 2007-08-28 | 2008-01-23 | 中昊晨光化工研究院 | Polymer polymerization reaction temperature control method and device thereof |
| CN201537487U (en) * | 2009-03-31 | 2010-08-04 | 淳安千岛湖龙祥化工有限公司 | Reactor with modified discharge device |
| CN102441557A (en) * | 2011-10-21 | 2012-05-09 | 中国科学院过程工程研究所 | Aerobic-anaerobic combined solid state fermentation device and fermentation method thereof |
-
2013
- 2013-02-28 CN CN201310064912.0A patent/CN103127896B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681866A (en) * | 2002-09-20 | 2005-10-12 | 三菱化学株式会社 | Process of producing polyesters |
| CN101109966A (en) * | 2007-08-28 | 2008-01-23 | 中昊晨光化工研究院 | Polymer polymerization reaction temperature control method and device thereof |
| CN201537487U (en) * | 2009-03-31 | 2010-08-04 | 淳安千岛湖龙祥化工有限公司 | Reactor with modified discharge device |
| CN102441557A (en) * | 2011-10-21 | 2012-05-09 | 中国科学院过程工程研究所 | Aerobic-anaerobic combined solid state fermentation device and fermentation method thereof |
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| CN103127896B (en) | 2015-06-17 |
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Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: Phosphorylcholine group limited-liability company is opened in Guizhou Address before: 550002 Guizhou city in Guiyang Province, the Haitian Road No. 203 building 12 layer Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
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Granted publication date: 20150617 Termination date: 20210228 |
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