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11.发明专利
公开(公告)号：CA2362511A1
公开(公告)日：2000-08-17
申请号：CA2362511
申请日：2000-02-10
Applicant: BASF AG
Inventor： KRONER HUBERTUS , KLOSTERMANN RAINER , BIRK JOACHIM , HAUFF THOMAS
Abstract: The invention relates to a method for on-line monitoring and controlling the monomer conversion during emulsion polymerization. According to said method, a balance is continuously made, starting from an initialization point in time, of the heat amount QIN fed to a reaction, the reaction enthalpy QRE added by the supply with monomers and the amount of heat QOUT dissipated from the reactor. A non-dissipated amount of heat QAD is calculated on the basis of these values which in the case of a spontaneous adiabatic reaction would result in an increase in the internal temperature and the internal pressure of the reactor. A check is carried out whether the potential adiabatic temperatures and pressures are always within the predetermined upper limits. If said upper limits are exceeded, the addition of monomers to the reactor i s slowed down or stopped.
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Patent Agency Ranking
公开(公告)号：DE50012127D1
公开(公告)日：2006-04-13
申请号：DE50012127
申请日：2000-02-10
Applicant: BASF AG
Inventor： KROENER HUBERTUS , KLOSTERMANN RAINER , BIRK JOACHIM , HAUFF THOMAS
Abstract: A method of on-line monitoring and control of monomer conversion in emulsion polymerization includes continuously balancing, as from an initialization time, the heat QIN, introduced into the reactor, the reaction enthalpy QRE introduced via the monomer feed, and the heat which has been removed from the reactor QOUT, and calculating an amount of heat which has not been removed QAD which would lead to an increase in the internal temperature and the internal pressure of the reactor in the event of a spontaneous adiabatic reaction. A check is carried out as to whether the potential adiabatic temperatures and pressures always lie below prescribed upper limits. If the upper limits are exceeded, the monomer feed to the reactor is throttled back or interrupted.
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13.发明专利
公开(公告)号：AU772839B2
公开(公告)日：2004-05-06
申请号：AU3803700
申请日：2000-02-10
Applicant: BASF AG
Inventor： KRONER HUBERTUS , KLOSTERMANN RAINER , BIRK JOACHIM , HAUFF THOMAS
Abstract: A method of on-line monitoring and control of monomer conversion in emulsion polymerization includes continuously balancing, as from an initialization time, the heat QIN, introduced into the reactor, the reaction enthalpy QRE introduced via the monomer feed, and the heat which has been removed from the reactor QOUT, and calculating an amount of heat which has not been removed QAD which would lead to an increase in the internal temperature and the internal pressure of the reactor in the event of a spontaneous adiabatic reaction. A check is carried out as to whether the potential adiabatic temperatures and pressures always lie below prescribed upper limits. If the upper limits are exceeded, the monomer feed to the reactor is throttled back or interrupted.
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公开(公告)号：AU2003274682A1
公开(公告)日：2003-12-22
申请号：AU2003274682
申请日：2003-06-06
Applicant: BASF AG
Inventor： KESSLER JOCHEN , BENTHACK CHRISTINA , KRONER HUBERTUS , HAUFF THOMAS , SCHLEMMER PETER , NIEKEN ULRICH , WATZDORF JOBST RUDIGER VON
Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.
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公开(公告)号：CA2487892A1
公开(公告)日：2003-12-18
申请号：CA2487892
申请日：2003-06-06
Applicant: BASF AG
Inventor： SCHLEMMER PETER , HAUFF THOMAS , KESSLER JOCHEN , VON WATZDORF JOBST RUDIGER , NIEKEN ULRICH , BENTHACK CHRISTINA , KRONER HUBERTUS
Abstract: The invention relates to a method for monitoring exothermic reactions in a reactor, whereby at least two starting materials react exothermically to giv e at least one product and at least one gas is present in the reactor under normal operating conditions or on a runaway occurring, comprising the following method steps: A) measurement and recording of a starting temperatu re and a starting pressure in the reactor, B) calculation of the amounts of products and starting materials present in the reactor from an energy balanc e, C) calculation of a maximum pressure increase on a step reaction of the amounts of starting materials present, D) calculation of a runaway pressure from the maximum pressure increase as calculated in step C) and the starting pressure as measured and stored in step A).
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16.发明专利
公开(公告)号：ZA200107439B
公开(公告)日：2002-09-10
申请号：ZA200107439
申请日：2001-09-10
Applicant: BASF AG
Inventor： KROENER HUBERTUS , KLOSTERMANN RAINER , BIRK JOACHIM , HAUFF THOMAS
Abstract: A method of on-line monitoring and control of monomer conversion in emulsion polymerization includes continuously balancing, as from an initialization time, the heat QIN, introduced into the reactor, the reaction enthalpy QRE introduced via the monomer feed, and the heat which has been removed from the reactor QOUT, and calculating an amount of heat which has not been removed QAD which would lead to an increase in the internal temperature and the internal pressure of the reactor in the event of a spontaneous adiabatic reaction. A check is carried out as to whether the potential adiabatic temperatures and pressures always lie below prescribed upper limits. If the upper limits are exceeded, the monomer feed to the reactor is throttled back or interrupted.
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