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7604731 |
Process for the production of needle coke
A process is disclosed for producing needle coke from heavy atmospheric distillation residues having sulfur no more than 0.7 wt %, which process involves the steps of heating the feedstock to a...
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7604730 |
Coking reduction in cracking reactors
The invention concerns a method for reducing coking on the metal walls of a reactor cracking hydrocarbons or other organic compounds and on the metal walls of a heat exchanger placed downstream of...
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7597797 |
System and method for on-line spalling of a coker
Coker heater operation is improved by on-line spalling of coker heater pipes. In one embodiment an off-line pipe is added to the on-line coker heater pipes. When an on-line pipe is to be spalled,...
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7540951 |
Integrated scheme of processes for extracting and treating an extra-heavy or bituminous crude
A process for preparation of synthetic crude from a deposit of heavy crude, comprises: (a) the extraction of heavy crude by technology using steam; (b) the separation of crude extract and water;...
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7534326 |
Coke drum bottom unheading system
Clamping system and method for clamping the bottom head cover of a coke drum to the bottom flange thereof are disclosed. The system and method include determining the flange stiffness or resistance...
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7524411 |
Alternate coke furnace tube arrangement
Tubes within a radiant heating section of a coking furnace are arranged differently than in a single vertical column and connected together in a simple, planar serpentine pattern. The tubes are...
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7427350 |
Silicone defoamer to better control hydrocarbon foam and reduce silicon content of liquid hydrocarbon products
It has been discovered that crosslinked polydimethylsiloxane (PDMS) resins are useful defoamers and antifoamers for hydrocarbon-containing liquids, such as delayed coker feedstocks and feedstocks...
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7425259 |
Method for improving liquid yield during thermal cracking of hydrocarbons
Metal additives to hydrocarbon feed streams give improved hydrocarbon liquid yield during thermal cracking thereof. Suitable additives include metal overbases and metal dispersions and the metals...
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7419608 |
Treating method and equipment for coke-cooling wastewater
The present invention falls within the field of purifying oil-laden wastewater, which provides a method for purifying coke-cooling wastewater in a delayed coking process in petroleum chemical...
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7393435 |
Injection charging system in delayed coking drums
Described is an injection charging system in delayed coking drums ( 11 ), comprised of at least two injection pipes ( 11 a ) connected to the sidewall of a coking drum ( 1 ) in its tricone portion,...
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7374665 |
Blending of resid feedstocks to produce a coke that is easier to remove from a coker drum
A method of blending delayed coker feedstocks to produce a coke that is easier to remove from a coker drum. A first feedstock is selected having less than about 250 wppm dispersed metals content...
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7371317 |
Process for producing coke
A delayed coking process for producing more uniform and higher quality coke by increasing the drum inlet temperature of the feedstock at least 2° F. during a fill cycle.
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7318891 |
Noah's pitch process
A process for producing pitch from pitch precursors, such as wood tar, coal tar or petroleum fractions is disclosed. Direct contact heat exchange of the pitch precursor with molten metal,...
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7318890 |
Pitch fractionation and high softening point pitch
A process for fractionating crude pitch by direct contact heating with molten metal is disclosed. The crude pitch, which may contain water, contaminants and/or distillables is heated by direct...
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7303664 |
Delayed coking process for producing free-flowing coke using a metals-containing additive
A delayed coking process for making substantially free-flowing coke, preferably shot coke. A coker feedstock, such as a vacuum residuum, is heated in a heating zone to coking temperatures then...
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7160437 |
Method for determining the source of fouling in thermal conversion process units
The present invention relates to a method for determining the source of fouling in petroleum thermal conversion process units. More particularly, the invention distinguishes whether fouling occurs...
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7128812 |
Apparatus and method for determining the level in a coke drum
A foam level in a delayed coking drum is detected by utilizing the varying density of the boiling mass in the coke drum which has larger bubbles and is less dense at the top and smaller bubbles and...
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6989082 |
Hinged bottom cover for unheading a coke drum
An apparatus for removing a bottom cover on a coke drum. A support structure supports at least the coke drum. A vertical actuator has a cover end attached to the bottom cover and a support end...
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6972085 |
Continuous coking refinery methods and apparatus
A system for refining hydrocarbon containing materials in a continuous coking mode may provide a pyrolyzer ( 1 ) which may be inclined to effect a liquid seal between a liquid conduction...
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6919017 |
Separation process and apparatus for removal of particulate material from flash zone gas oil
A process and an apparatus for removing particulate material from a flash zone gas oil stream produced in a delayed coking unit. The process and apparatus of the invention employ cyclonic...
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6860985 |
Process for increasing yield in coking processes
The invention relates to a method for improving yield in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for regenerating filters...
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6852215 |
Heavy oil upgrade method and apparatus
A method for upgrading a hydrocarbon in which an oxygen source and a hydrogen source are ignited and the resulting synthetic gas is used to initiate a predominantly gas phase heavy oil upgrade...
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6852213 |
Phosphorus-sulfur based antifoulants
This invention is directed to a method of inhibiting fouling of heat transfer surfaces in contact with petroleum or hydrocarbon feedstocks comprising contacting the heat-transfer surfaces with an...
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6773579 |
Process for reducing fouling in refinery processes
A process for substantially decreasing fouling in a refinery unit. The process comprises preheating a feed to said refinery unit reactor zone and there-after introducing the feed into said refinery...
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6764592 |
Drum warming in petroleum cokers
A method of producing petroleum coke in a petroleum coking system comprising the steps of (a) adding a fluid to a live coking drum while warming a second drum so that additional vapor is provided...
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6758945 |
Method and apparatus for quenching the coke drum vapor line in a coker
A method and apparatus for quenching the coke drum vapor line from a coke drum to the main fractionator in a coker unit whereby the volume of quench liquid prevents the drum vapor line from...
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6746596 |
Process for reducing sulphur emissions from a fluidized bed coke burner
The process has to do with a circuit involving a fluidized bed coker reactor working in tandem with a fluidized bed coke burner. The burner is operated at a reduced temperature in the range 550°...
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6717021 |
Solvating component and solvent system for mesophase pitch
A solvating component for a solvated mesophase pitch. The solvated component includes a mixture of aromatic hydrocarbons having boiling points in the atmospheric equivalent boiling point range of...
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6673234 |
Combined process of low degree solvent deasphalting and delayed coking
A combined process of low degree solvent deasphalting and delayed coking, which comprises feeding a deasphalting stock and a solvent into an extractor and making the yield of the deasphalted oil 70...
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6652714 |
Drill stem stabilizer
A drill stem stabilizer used in a decoking apparatus that includes a drill stem and a drilling structure on which the drill stem is supported for vertical movement above and within a coke drum. The...
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6533922 |
Process for reducing fouling in coking processes
A process for decreasing fouling in a refinery unit comprising preheating a hydrocarbon feed to a refinery unit reactor zone and thereafter introducing the feed into the refinery unit reactor zone...
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6524469 |
Heavy oil upgrading process
An improved heavy oil conversion process is disclosed in which the heavy oil feed is first thermally cracked using visbreaking or hydrovisbreaking technology to produce a product that is lower in...
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6512156 |
Method and apparatus for controlling severity of cracking operations by near infrared analysis in the gas phase using fiber optics
A two-step method and apparatus for controlling cracking severity in the effluent from a cracking furnace such as an ethylene cracker. The method includes two steps. The first step consists of...
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6497812 |
Conversion of C1-C3 alkanes and fischer-tropsch products to normal alpha olefins and other liquid hydrocarbons
Processes for converting C 1 to C 3 alkanes into high purity C 6 to C 24 normal alpha olefins and internal combustion engine grade fuels and/or lubricating oils comprising a sequence of...
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6485631 |
Process for thermal, and optionally catalytic, upgrading and hydrogenation of hydrocarbons
A process for thermal and, optionally, catalytic upgrading and hydrogenation of hydrocarbons is described, wherein the hydrocarbons (oil) with a lower API grade is passed through one or more...
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6440298 |
Method of reclaiming waste oil
An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating...
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6348146 |
System and method to effectuate and control coker charge heater process fluid temperature
A system and method to improve the efficiency of delayed coker charge heating by effecting and controlling the temperature of a coker process fluid, prior to its introduction to a coker charge...
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6344429 |
Oil soluble coking additive, and method for making and using same
A method for making an oil soluble coking process additive, includes the steps of: providing mixture of a metal salt in water wherein the metal salt contains a metal selected from the group...
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6332975 |
Anode grade coke production
The invention is a process for making anode grade coke which comprises solvent deasphalting a residue feedstock to obtain an essentially asphaltene-free, resin-containing stream and coking the...
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6270656 |
Reduction of coker furnace tube fouling in a delayed coking process
In a delayed coking process, furnace tube fouling is minimized by including a measured amount of full boiling range heavy gas oil as an additive in the furnace feed, preferably by forced recycle...
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6264829 |
Low headroom coke drum deheading device
A coke drum head is hinged to a coke drum body using a compound joint such as a trammel pivot, and the head is moved between open and closed positions using an actuator. In moving between open and...
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6264797 |
Method for improving longevity of equipment for opening large, high temperature containers
A method is provided for cooling coke drum deheading devices, thereby extending the life of same. The method calls for spraying water or other coolant on the devices when they are in operation.
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6210560 |
Mitigation of fouling by thermally cracked oils (LAW852)
The present invention is a method for mitigating the fouling from thermally cracked oils by minimizing the residence time at the temperature when the fouling is highest.
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6204421 |
Method of disposing of waste in a coking process
A method for recycling a waste stream containing water and solids comprises (a) removing water from the waste stream to produce a second stream containing less than 60% by weight water, (b) drying...
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6178926 |
Double-fired horizontal tube heater
A heater includes a radiant section having a wall and a roof, the roof having a longitudinal opening. A radiant heat exchange tube is disposed in the radiant section, and the tube has an inlet and...
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6168709 |
Production and use of a premium fuel grade petroleum coke
A premium "fuel-grade" petroleum coke is produced by modifying petroleum coking technology. Coking process parameters are controlled to consistently produce petroleum coke within a predetermined...
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6153088 |
Production of aromatic oils
A process for the production of aromatic hydrocarbons. The process involves heating gas oil while under pressure, and maintaining the gas oil at temperature and pressure to break the substantially...
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RE36922 |
Process of used lubricant oil recycling
A used lubricant oil recycling process is disclosed in which a used lubricating oil is injected to a delayed coker downstream of the coker furnace whereby the used oil is thermally cracked into...
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6117308 |
Foam reduction in petroleum cokers
A method and apparatus for at least reducing foam formation and expansion in a coking drum and for preventing foamovers. In the invention, a fluid is injected into the upper portion of the coking...
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6048448 |
Delayed coking process and method of formulating delayed coking feed charge
A process for upgrading petroleum residua to more valuable products by visbreaking or otherwise thermally cracking a petroleum residuum to produce a thermally cracked bottoms stream, vacuum...
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