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A method is described that includes contacting an olefin with a catalyst in a polymerization reactor, polymerizing at least a portion of the olefin to form an alpha olefin reaction product, detecting a condition within the polymerization reactor, determining an average temperature of at least one ol

A method is described that includes contacting an olefin with a catalyst in a polymerization reactor, polymerizing at least a portion of the olefin to form an alpha olefin reaction product, detecting a condition within the polymerization reactor, determining an average temperature of at least one olefin product particle based on the condition, determining an operating particle temperature threshold using a foul curve, comparing the average temperature of the polymer particle to the operating particle temperature threshold, changing one or more operating parameters in response to the comparing, and maintaining the average temperature of the olefin polymer particle at or below the operating particle temperature threshold in response to changing the one or more operating parameters. The alpha olefin reaction product includes a plurality of olefin polymer particles, and the polymerization reactor includes a reaction mixture that includes the olefin, the catalyst, a diluent, and the alpha olefin reaction product.

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1. A polymerization process comprising: contacting an olefin with a catalyst in a polymerization reactor;polymerizing at least a portion of the olefin to form an alpha olefin reaction product, wherein the alpha olefin reaction product is in the form of a plurality of olefin polymer particles, wherei

1. A polymerization process comprising: contacting an olefin with a catalyst in a polymerization reactor;polymerizing at least a portion of the olefin to form an alpha olefin reaction product, wherein the alpha olefin reaction product is in the form of a plurality of olefin polymer particles, wherein the polymerization reactor comprises a reaction mixture comprising the olefin, the catalyst, a diluent, and the alpha olefin reaction product;detecting, by sensor, a condition within the polymerization reactor;determining, by a processor, an average temperature of at least one olefin polymer particle of the plurality of olefin polymer particles based on the condition;determining an operating particle temperature threshold using a foul curve;comparing, by the processor, the average temperature of the at least one olefin polymer particle to the operating particle temperature threshold;changing one or more operating parameters in response to the comparing; andmaintaining the average temperature of the at least one olefin polymer particle at or below the operating particle temperature threshold in response by changing the one or more operating parameters. 2. The method of claim 1, wherein the condition comprises a bulk fluid temperature, wherein changing the one or more operating parameters comprises at least one of changing a cooling fluid temperature or flowrate, and wherein the cooling fluid cools at least a portion of an exterior of the polymerization reactor. 3. The method of claim 2, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises at least one of lowering a cooling fluid temperature or increasing a cooling fluid flowrate. 4. The method of claim 1, wherein the condition comprises a concentration of the olefin in the reaction mixture, and wherein changing the one or more operating parameters comprises changing the olefin concentration in the reaction mixture. 5. The method of claim 1, wherein the catalyst comprises a catalyst particle, wherein the condition comprises an average catalyst particle size in the polymerization reactor, and wherein changing the one or more operating parameters comprises changing the average catalyst particle size within the polymerization reactor. 6. The method of claim 5, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises reducing the average catalyst particle size within the polymerization reactor. 7. The method of claim 1, wherein the condition comprises an average olefin polymer particle size in the polymerization reactor, and wherein changing the one or more operating parameters comprises changing the average olefin polymer particle size within the polymerization reactor. 8. The method of claim 7, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises forming a pre-polymer particle comprising the catalyst, and introducing the pre-polymer particle to the polymerization reactor. 9. The method of claim 1, wherein the condition comprises an operating pressure in the polymerization reactor, and wherein changing the one or more operating parameters comprises changing the pressure within the polymerization reactor. 10. The method of claim 9, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises increasing the operating pressure in the polymerization reactor to a pressure above a vapor pressure of the reaction mixture at the average temperature of the olefin polymer particle. 11. The method of claim 1, wherein determining the average temperature of the olefin polymer particle is further based on at least one of: a composition of the catalyst, a composition of the olefin, a composition of the alpha olefin reaction product, a ratio of a surface area of the catalyst to a volume of the catalyst, a density of the alpha olefin reaction product, a composition of the diluent, a size of the olefin polymer particle, a dimension of the polymerization reactor, a kinetic profile of the catalyst, an initial catalyst particle size, a measure of a plurality of reactive sites associated with the catalyst, a pressure within the polymerization reactor, an average temperature of the reaction mixture, a flowrate of the reaction mixture, or any combination thereof. 12. The method of claim 1, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises ceasing the introduction of the olefin into the polymerization reactor. 13. The method of claim 1, wherein the comparing comprises determining that the average temperature of the olefin polymer particle is above the operating particle temperature threshold, and wherein changing the one or more operating parameters comprises introducing water into the polymerization reactor. 14. A polymerization process comprising: contacting an olefin with a catalyst in a polymerization reactor;polymerizing the olefin to form an alpha olefin reaction product, wherein the alpha olefin reaction product is in the form of a plurality of particles, wherein the polymerization reactor comprises a reaction mixture comprising the olefin, the catalyst, a diluent, and the alpha olefin reaction product; andcontrolling an average temperature of one or more particles of the plurality of particles within the polymerization reactor, wherein the average temperature of the one or more particles of the plurality of particles is less than the melting temperature of the alpha olefin reaction product, and wherein a ratio of the average temperature of the one or more particles of the plurality of particles to the melting temperature of the alpha olefin reaction product is greater than about 0.9. 15. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles comprises: controlling a ratio of an average reaction mixture temperature to the average temperature of the one or more particles of the plurality of particles, wherein the ratio is less than about 0.95. 16. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles of the plurality of particles comprises: controlling an olefin concentration in the reaction mixture. 17. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles of the plurality of particles comprises: operating the polymerization reactor at a first pressure, wherein the first pressure is greater than the vapor pressure of the reaction mixture at the average temperature of the one or more particles of the plurality of particles. 18. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles of the plurality of particles comprises: forming a pre-polymer product in a pre-polymerization reactor, wherein the pre-polymer product formed in the pre-polymerization reactor comprises a plurality of pre-polymer particles;separating the plurality of pre-polymer particles, andintroducing the plurality of pre-polymer particles into the polymerization reactor. 19. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles of the plurality of particles comprises; controlling the amount of active sites on the catalyst. 20. The polymerization process of claim 14, wherein controlling the average temperature of the one or more particles of the plurality of particles comprises: polymerizing the olefin using the catalyst, wherein the catalyst comprises a kinetic profile that changes during the polymerization process; and changing a polymerization reaction rate during the polymerizing of the olefin based on the kinetic profile that changes. 21. The polymerization process of claim 14, wherein the catalyst is in particulate form, and wherein controlling the average temperature of the one or more particles of the plurality of particles comprises: controlling a ratio of a surface area of the catalyst to a volume of the catalyst to greater than a threshold. 22. A polymerization process comprising: calculating an alpha olefin product particle internal temperature within a polymerization reactor based on one or more alpha olefin product particle properties and an average temperature of a bulk fluid surrounding the alpha olefin product particle within the polymerization reactor;determining one or more polymerization reactor operating parameters based on the alpha olefin product particle internal temperature;controlling the one or more polymerization reactor operating parameters; andmaintaining a ratio of the alpha olefin product particle internal temperature to a melting temperature of the alpha olefin product particle to a value less than about 1.0 in response to controlling the one or more polymerization reactor operating parameters. 23. The polymerization process of claim 22, wherein the one or more alpha olefin product particle properties comprise a first alpha olefin product particle diameter and a second alpha olefin product particle diameter, and wherein calculating the alpha olefin product particle internal temperature comprises: calculating a first alpha olefin product particle internal temperature at the first alpha olefin product particle diameter;calculating a second alpha olefin product particle internal temperature at the second alpha olefin product particle diameter; andgenerating a foul curve based on the first alpha olefin product particle internal temperature, the second alpha olefin product particle internal temperature, the first alpha olefin product particle diameter, and the second alpha olefin product particle diameter, wherein the foul curve relates an alpha olefin product particle diameter to a fouling temperature of the alpha olefin product particle within the polymerization reactor. 24. The polymerization process of claim 23, wherein controlling the one or more polymerization reactor operating parameters comprises: controlling the average temperature of the bulk fluid using the foul curve. 25. The polymerization process of claim 22, wherein the one or more polymerization reactor operating parameters comprise an olefin concentration within the polymerization reactor, and wherein controlling the one or more polymerization reactor operating parameters comprises maintaining the olefin concentration at or below a predetermined threshold value. 26. The polymerization process of claim 22, wherein the one or more polymerization reactor operating parameters comprise an average alpha olefin product particle size within the polymerization reactor, and wherein controlling the one or more polymerization reactor operating parameters comprises maintaining the average alpha olefin product particle size above a predetermined threshold. 27. The polymerization process of claim 22, wherein controlling the one or more polymerization reactor operating parameters comprises maintaining flow conditions within the polymerization reactor to maintain an average catalyst particle size below a predetermined threshold, and wherein maintaining the flow conditions within the polymerization reactor comprises maintaining a fluid velocity in the polymerization reactor above a threshold.