| Patent Number |
Title Of Patent |
Date Issued |
| 5196632 |
Treatment of heat exchangers to reduce corrosion and by-product reactions |
March 23, 1993 |
| The invention provides a method of extending the useful life of high temperature heat exchangers, e.g., reactor feed/effluent heat exchangers, in installations where the heat exchanger is contacted by a process fluid stream, e.g., a feedstock comprising ethylbenzene at a temperature wher |
| 5141049 |
Treatment of heat exchangers to reduce corrosion and by-product reactions |
August 25, 1992 |
| The invention provides a method of extending the useful life of high temperature heat exchangers, e.g., reactor feed/effluent heat exchangers, in installations where the heat exchanger is contacted by a process fluid stream, e.g., a feedstock comprising ethylbenzene, at a temperature whe |
| 4695664 |
Method of recovering heat from low temperature effluent |
September 22, 1987 |
| The invention is an improved method and apparatus for recovering waste heat from a low temperature process stream by means of a vaporizable heat sink liquid, characterized by an effective lowering of the boiling temperature of the heat sink liquid without need to reduce its boiling press |
| 4563267 |
Process for reducing thermal shock in fluidized bed stem coils cycled in and out of service |
January 7, 1986 |
| The invention provides an improved method and apparatus for operating a fluidized bed chemical processing unit of the type having steam generating coils, so as to reduce the occurrence of thermally-induced stresses in the coils and thereby extend the useful life of the coils.The inventio |
| 4524024 |
Processes of recovering fatty acids and sterols from tall oil pitch |
June 18, 1985 |
| An improved process of enhancing the recovery of fatty acids from tall oil pitch is disclosed. The process includes a hydrolysis step for increasing the free fatty acid available for recovery from tall oil pitch during the distillation process. The hydrolysis step also enables the recove |
| 4485077 |
Method for conducting wet grinding of phosphate rock in a phosphoric acid production plant |
November 27, 1984 |
| A method and system for conducting wet grinding of mined phosphate rock before utilizing the same for the production of phosphoric acid by the wet process method, the method comprising the steps of: (1) wet grinding the phosphate rock in a medium of fresh water at a first stage so as to |
| 4435581 |
Process for the production of phthalic anhydride |
March 6, 1984 |
| A system for producing phthalic anhydride by the catalytic oxidation of naphthalene, wherein the system is characterized by reduced capital and operating costs due to lower operating pressures. |
| 4435580 |
Process for the production of phthalic anhydride |
March 6, 1984 |
| A system for producing phthalic anhydride by the catalytic oxidation of naphthalene, wherein without creating a significant pressure drop in the system substantially all of the catalyst particles are removed from the product stream before the product stream is sent to a battery of switch |
| 4406836 |
Method for condensing fatty acids |
September 27, 1983 |
| This invention constitutes an improved method for condensing fatty acids, particularly from steam streams exiting from distillation columns. Steam streams containing entrained high-titre fatty acids can be condensed in surface condensers if certain conditions are maintained. A surface |
| 4375386 |
Cyclonic entrainment separator for evaporator |
March 1, 1983 |
| A vacuum evaporator is provided with an integral cyclonic-type entrainment separator at the top of the evaporator vapor body which comprises a helical spin plate for imparting a centrifugal action to the vapor and entrained liquid rising from the boiling liquid in the flash chamber. |
| 4265223 |
Method and apparatus for utilizing solar energy |
May 5, 1981 |
| A process and system are provided for economic utilization of solar energy. Solar energy is absorbed and converted to thermal energy by means of at least two systems, operating in different temperature ranges, for circulating a primary fluid heat transfer medium through separate coll |
| 4230668 |
Process and apparatus for producing halogenated unsaturated hydrocarbons |
October 28, 1980 |
| Process and apparatus for producing vinyl chloride monomer characterized by conjoint chlorination and dehydrochlorination reactions carried out in the presence of fluidized solids which provide efficient heat transfer within and between the two reaction zones. |
| 4225531 |
Fluidization promoters |
September 30, 1980 |
| The invention is directed to improving the quality of fluidization of fluidized solids and comprises the addition of fluidization promoters in particle form that have a smaller density and particle size than the neat solids. In a preferred embodiment of the invention the catalyst is a |
| 4208529 |
Heat exchanger system |
June 17, 1980 |
| A sinuous shaped heat exchanger made up of a plurality of generally U-shaped heat exchanger units or sections or banks arranged with one of the ends of each of the U-shaped banks in opposing end to end relationship with one of the ends of a next succeeding bank in such a manner that |
| 4200145 |
Method of preheating a liquid reaction mass of polyolefin dissolved in liquid monomer |
April 29, 1980 |
| In the preheating of a liquid reaction mass of polyolefin dissolved in liquid olefin monomer by passing it through a multiple pass preheater, the improvement of using generally U-shaped heat exchanger tubes in a generally U-shaped shell. |
| 4193451 |
Method for production of organic products from kerogen |
March 18, 1980 |
| A method of producing fluid organic products from kerogen in situ in a body of oil shale by the application of alternating electric fields having a frequency between 100 kilohertz and 100 megahertz to heat the kerogen in the oil shale to a temperature in the range of 200.degree. C. to |
| 4182801 |
Method of drying liquid olefin monomer feed in a molecular sieve dryer in the polymerization of |
January 8, 1980 |
| In the catalytic polymerization of olefins from liquid olefin monomer under positive pressure, the use of a fuel gas, required in any event for providing energy elsewhere in the system, as a regenerative drying gas to regenerate the beds of a molecular sieve dryer used to dry the liquid |
| 4159992 |
Removal of plastic polymer fines from tallow |
July 3, 1979 |
| The invention provides a system for purifying tallow. Tallow received from rendering plants typically is contaminated with suspended plastic polymer fines. According to this invention plastic polymer fines are removed from tallow containing such fines by adjusting the temperature of the |
| 4137387 |
Equipment for handling spent-aqueous Ziegler type catalyst in the polymerization of olefins |
January 30, 1979 |
| In the polymerization under pressure of liquid olefin to polyolefin using a Ziegler type catalyst in which the reaction mass, comprising a mixture of catalyst and polyolefin dissolved in liquid monomer, is mixed in a mixer with water to kill the catalyst and reaction after which the high |
| 4068060 |
Method of removing oligomers from olefin monomer vapor in the polymerization of olefins |
January 10, 1978 |
| Removing oligomers (short chain polymers of from two to seven atoms in the chain) from olefin monomer vapor recovered for recycle from the reaction mass resulting from the catalytic polymerization of liquid olefinic monomers by flowing such recovered vapor through a mass transfer plate |
| 4068053 |
Method of removing water from liquid olefin in the polymerization of olefins |
January 10, 1978 |
| Removing water and light ends from recycle liquid olefin monomer and fresh liquid olefin monomer feed before catalytic polymerization thereof in said liquid state with a water sensitive catalyst, by flowing them through a mass transfer plate tower with a reboiler which vaporizes them upw |
| 3944592 |
Method of producing unsaturated nitriles |
March 16, 1976 |
| A method of producing unsaturated nitriles by reaction of an unsaturated hydrocarbon with ammonia and oxygen in a reactor having a fluidized catalyst bed comprising a regeneration zone and a reaction zone, characterized by introducing between about 3 percent and about 90 percent of t |
