scholarly journals Optimal control of a high-temperature semi-batch solution polymerization reactor

2005 ◽  
Author(s):  
F.S. Rantow ◽  
M. Soroush ◽  
M.C. Grady
Keyword(s):  
Optimal Control ◽  
High Temperature ◽  
Solution Polymerization ◽  
Polymerization Reactor

scholarly journals Optimal Control of Non-Isothermal, Batch Polymerization of Methacrylates with Specified Time, Monomer Conversion, and Average Molecular Weights

2021 ◽  
Author(s):  
Baranitharan Sanmuga Sundaram
Keyword(s):  
Molecular Weight ◽  
Optimal Control ◽  
Methyl Methacrylate ◽  
Process Model ◽  
Control Method ◽  
Operation Time ◽  
Monomer Conversion ◽  
Butyl Methacrylate ◽  
Solution Polymerization ◽  
Polymer Molecular Weight

Optimal control policies are determined for the free radical polymerization of three different polymerization processes, in a non-isothermal batch reactor as follows: (1) bulk polymerization of n-butyl methacrylate; (2) solution polymerization of methyl methacrylate with monofunctional initiator; (3) solution polymerization of methyl methacrylate with bifunctional initiator. Four different optimal control objectives are realized for the above three processes. The objectives are: (i) maximization of monomer conversion in a specified operation time, (ii) minimization of operation time for a specified, final monomer conversation, (iii) maximization of monomer conversion for a specified, final number average polymer molecular weight, and (iv) maximization of monomer conversion for a specified, final weight average polymer molecular weight. The realization of these objectives is expected to be very useful for the batch production of polymers. To realize the above four different optimal control objectives, a genetic algorithms-based optimal control method is applied, and the temperature of heat exchange fluid inside reactor jacket is used as a control function. Necessary equations are provided in the above three processes to suitably transform the process model in the range of a specified variable other than time, and to evaluate the elements of Jacobian to help in the accurate solution of the process model. The results of this optimal control application reveal considerable improvements in the performance of the batch polymerization processes.

Polyetherimides. II. High-temperature solution polymerization

1986 ◽  
Vol 74 (1) ◽  
pp. 93-108 ◽  
Author(s):  
T. Takekoshi ◽  
J. E. Kochanowski ◽  
J. S. Manello ◽  
M. J. Webber
Keyword(s):  
High Temperature ◽  
Solution Polymerization ◽  
High Temperature Solution ◽  
Temperature Solution

A Novel Cement Fluid Loss Additive P1402

2014 ◽  
Vol 941-944 ◽  
pp. 1203-1207 ◽  
Author(s):  
Qiang Xiao ◽  
Wen Fa Xiao ◽  
Xin Xin Liu
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
High Temperature ◽  
Reaction Time ◽  
Performance Testing ◽  
Fluid Loss ◽  
Solution Polymerization ◽  
Excellent Thermal Stability ◽  
Aqueous Solution Polymerization ◽  
Fluid Loss Additive

A novel cement fluid loss additive P1402, which synthesized using the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), acrylic acid (AA), N,N dimethyl acrylamide (DMAM) and N-Vinyl-2-pyrrolidone (NVP) by the method of aqueous solution polymerization. The ratio of monomers AMPS:AA:DMAM:NVP at 2:1.5:1:1, reaction PH at 10.8, reaction temperature at 65°Cand reaction time about 5 hours. The IR spectrum of P1402 show that the polymer with the structure of all the monomers .The fluid loss performance testing show that the forpolymers P1402 has an excellent thermal stability. The fluid loss additive P1402 has an excellent tolerance to salt and high temperature.

Synthesis and Application of High Temperature Resistance Starch Graft Copolymer Inhibitor

2013 ◽  
Vol 821-822 ◽  
pp. 990-993
Author(s):  
Ling Xun Liang
Keyword(s):  
High Temperature ◽  
Graft Copolymer ◽  
Sulfonic Acid ◽  
Polymerization Reaction ◽  
Laboratory Evaluation ◽  
Solution Polymerization ◽  
Scale Inhibitor ◽  
Temperature Resistance ◽  
High Temperature Resistance ◽  
Single Well

The new high temperature resistance graft copolymer inhibitor based on starch and acrylic acid, 2-acrylamide-2-methyl propane sulfonic acid by solution polymerization reaction with self-made initiator. Laboratory evaluation experiment shows that a new scale inhibitor still has better effect， anti-scaling rate is 85.21%. The field test show that the dosage is 500ppm, the new high temperature resistance starch graft copolymer inhibitor by single well dosing, to solve problems of Xing-buried hills block and pipeline scaling and downhole ESP scaling.

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