System and process for production of polyethylene and polypropylene

Abstract

A system for introducing an inhibitor into a fluid to be treated, the system having at least one high shear mixing device comprising a rotor and a stator separated by a shear gap, wherein the at least one high shear mixing device is configured to subject a mixture of the inhibitor and the fluid to a shear rate of greater than about 20,000 s −1 ; and a pump configured to deliver at least one of the fluid, the inhibitor, and combinations thereof, to the high shear mixing device.

1 . A system for inhibiting a component in a fluid, the system comprising:
 at least one high shear mixing device configured with at least one generator comprising a rotor and a stator separated by a shear gap, wherein the shear gap is the minimum distance between the rotor and the stator, and wherein the high shear mixing device is capable of producing a tip speed of the rotor of greater than 22.9 m/s (4,500 ft/min); and   a pump configured for delivering a mixture of a carrier and an inhibitor to the high shear mixing device.   
     
     
         2 . The system of  claim 1 , wherein the component is selected from ice, scale, hydrates, acidic chemicals, and combinations thereof, and wherein the rotor and the stator each comprise at least one grooved surface. 
     
     
         3 . The system of  claim 2 , further comprising:
 a flow line or vessel configured for receiving the dispersion from the high shear device.   
     
     
         4 . The system of  claim 3 , wherein the vessel is a boiler. 
     
     
         5 . The system of  claim 1 , wherein the at least one high shear mixing device is configured for producing a dispersion of the inhibitor in a continuous phase comprising the carrier, wherein the dispersion comprises bubbles, particles, or droplets of inhibitor having a mean diameter of less than 5 μm. 
     
     
         6 . The system of  claim 1 , wherein the at least one high shear mixing device is capable of producing a tip speed of the rotor of at least 40.1 m/s (7,900 ft/min). 
     
     
         7 . The system of  claim 1  comprising at least two high shear mixing devices. 
     
     
         8 . The system of  claim 1 , wherein the at least one high shear device comprises at least two generators. 
     
     
         9 . The system of  claim 8 , wherein the shear rate provided by one generator is greater than the shear rate provided by another generator. 
     
     
         10 . A system for introducing an inhibitor into a fluid to be treated, the system comprising:
 at least one high shear mixing device comprising a rotor and a stator separated by a shear gap, wherein the at least one high shear mixing device is configured to subject a mixture of the inhibitor and the fluid to a shear rate of greater than about 20,000 s −1 ; and   a pump configured to deliver at least one of the fluid, the inhibitor, and combinations thereof, to the high shear mixing device.   
     
     
         11 . The system of  claim 10 , wherein the at least one high shear mixing device is configured to produce a tip speed of the rotor of at least 40 m/s. 
     
     
         12 . The system of  claim 10 , wherein the shear gap comprises a width in the range of about 0.025 mm to about 10 mm, and wherein the rotor and the stator each comprise at least one grooved surface. 
     
     
         13 . The system of  claim 10 , the system further comprising a vessel in fluid communication with the high shear device, wherein the vessel is configured to receive at least a portion of the mixture after the mixture is subjected to the shear rate. 
     
     
         14 . The system of  claim 10 , wherein the mixing device is configured for operating at a flow rate of at least 300 L/h and at a rotor tip speed of at least 22 msec. 
     
     
         15 . The system of  claim 10 , wherein the pump provides a fluid pressure of between the range of about 300 kPa to about 2000 kPa. 
     
     
         16 . The system of  claim 10 , wherein the fluid to be treated comprises boiler feedwater or a transport stream comprising hydrocarbons. 
     
     
         17 . A system for inhibiting a component in a fluid, the system comprising:
 a high shear device configured with at least one generator comprising a rotor and a stator separated by a shear gap width, wherein the shear gap width is the minimum distance between the rotor and the stator, wherein the high shear mixing device is configured to produce a tip speed of the rotor of greater than 22 m/s, and wherein the fluid is subjected to a shear rate greater than 20,000 s −1  in the high shear device;   a pump fluidly connected with the high shear device; and   a vessel fluidly connected with the high shear device, wherein the vessel is configured to receive at least a portion of the fluid after the fluid is subjected to the shear rate.   
     
     
         18 . The system of  claim 17 , wherein the component is selected from ice, scale, hydrates, acidic chemicals, and combinations thereof, and wherein the rotor and the stator each comprise at least one grooved surface. 
     
     
         19 . The system of  claim 18 , wherein the vessel is a boiler. 
     
     
         20 . The system of  claim 18 , wherein the high shear device comprises a second generator further comprising a second stator and a second complementarily-shaped rotor.