San Francisco, CA, United States
San Francisco, CA, United States

Bechtel Corporation is the largest construction and civil engineering company in the United States, ranking as the 4th-largest privately owned company in the United States. Its headquarters are in the South of Market, San Francisco. Wikipedia.


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Systems and methods for enhanced separation of H2S and NH3 in an H2S stripper using carbon dioxide and/or an inert gas.


Patent
Bechtel Corporation | Date: 2015-03-05

Systems and methods for ammonia purification in the NH3 purification and liquefaction stage of a conventional two-column sour water stripping system using an adsorbent bed.


Patent
Bechtel Corporation | Date: 2016-09-01

Methods for defoaming in hydrocarbon processes include the steps of providing a defoaming agent, and introducing the agent into a hydrocarbon process to inhibit or control foaming in the hydrocarbon process. These methods may be particularly useful in coking processes, especially as to foaming in coke drums. In certain embodiments, defoaming agents may comprise a plurality of carbon nanoparticles. In some embodiments, drag reducing agents may comprise high-molecular weight alkanes. Advantages include, but are not limited to, more efficient and effective foam inhibition, reduced or eliminated product contamination, reduced or eliminated catalyst poisoning, increased refinery production rate, debottlenecking the coker, and reduced cost and consequences of applying too much antifoam.


Patent
Bechtel Corporation | Date: 2015-07-24

Systems and methods for natural gas liquefaction capacity augmentation using supplemental cooling systems and methods to improve the efficiency of a liquefaction cycle for producing liquefied natural gas (LNG).


Patent
Bechtel Corporation | Date: 2015-03-25

A delayed coking process firstly introduces coke drum vapors into a flash zone of a fractioning column of a delayed coking unit. The process then removes a heavy coker gas oil stream from the fractionating column via a heavy coker gas oil draw in the fractionating column. Some or all of the heavy coker gas oil stream is withdrawn as an end product.


Patent
Bechtel Corporation | Date: 2015-03-13

Methods for defoaming in hydrocarbon processes include the steps of providing a defoaming agent, and introducing the agent into a hydrocarbon process to inhibit or control foaming in the hydrocarbon process. These methods may be particularly useful in coking processes, especially as to foaming in coke drums. In certain embodiments, defoaming agents may comprise a plurality of carbon nanoparticles. In some embodiments, drag reducing agents may comprise high-molecular weight alkanes. Advantages include, but are not limited to, more efficient and effective foam inhibition, reduced or eliminated product contamination, reduced or eliminated catalyst poisoning, increased refinery production rate, debottlenecking the coker, and reduced cost and consequences of applying too much antifoam.


Patent
Bechtel Corporation | Date: 2014-06-13

A power generation plant has two internal combustion engines (ICE) coupled in a compound configuration to operate electrical generators. A first ICE is a piston/cylinder engine producing high temperature and high pressure exhaust. The exhaust is coupled to the combustion air inlet of the second ICE, which is a gas turbine engine. A heat exchanger transfers heat from the exhaust of the first ICE to a bottoming cycle for additional power generation, also reducing the temperature at the turbine engine combustor. The second ICE (the gas turbine) is operated without an intake compressor, relying instead on the high pressure of the first ICE exhaust. The drive shaft of the gas turbine (or an associated generator/motor or a common shaft) operates a multi-stage turbo-compressor at the combustion air intake of the first ICE for improving engine power output without sapping exhaust energy as with a turbocharger.


Systems and methods for safe on-line pigging decoking of a coker furnace tubes and which also permits on-line spalling operations.


Systems and methods for safe on-line pigging decoking of a coker furnace tubes and which also permits on-line spalling operations.


A method for conversion of a Very Large Ore Carrier (VLOC) to an FLNG vessel for offshore stranded gas reservoirs and at-shore or near-shore Liquefied Natural Gas (LNG) export terminals.

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