Class / Patent application number | Description | Number of patent applications / Date published |
208047000 | With prevention of corrosion or erosion in system | 8 |
20080257782 | CORROSION ASSESSMENT METHOD AND SYSTEM - A method includes assessing corrosion in a refinery operation having a piping network. Assessing can include identifying in a petroleum sample a presence and an amount of a species determined to be potentially corrosive to corrodible equipment in a refinery. A corrosion risk presented by the presence, the amount, and the boiling point of the species is determined. And, the corrosion risk is evaluated in view of piping network information. A system for implementing the method is provided, also. | 10-23-2008 |
20090173663 | Corrosion and gas hydrate inhibitors with an increased biological degradability and a reduced toxicity - The invention relates to the use of compounds of formula (1) as corrosion and gas hydrate inhibitors. In said formula: R | 07-09-2009 |
20100108566 | METHOD OF REDUCING CORROSION AND CORROSION BYPRODUCT DEPOSITION IN A CRUDE UNIT - A method of optimizing system parameters in a crude unit to reduce corrosion and corrosion byproduct deposition in the crude unit is disclosed and claimed. The method includes measuring or predicting properties associated with the system parameters and using an automated controller to analyze the properties to cause adjustments in the chemical program to optimize the system parameters. Adjusting the system parameters effectively controls corrosion in the crude unit by reducing the corrosiveness of a fluid in the process stream and/or by protecting the system from a potentially corrosive substance. System parameter sensing probes are arranged at one or more locations in the process stream to allow accurate monitoring of the system parameters in the crude unit. | 05-06-2010 |
20100264064 | NOVEL ADDITIVE FOR NAPHTHENIC ACID CORROSION INHIBITION AND METHOD OF USING THE SAME - The present invention relates to the field of processing hydrocarbons which causes corrosion in the metal surfaces of processing units. The invention addresses the technical problem of high temperature naphthenic acid corrosion and sulphur corrosion and provides a solution to inhibit these types of corrosion. The three combination compositions are formed by two mixtures separately, with one mixture obtained by mixing compound A, which is obtained by reacting high reactive polyisobutylene (HRPIB) with phosphorous pentasulphide in presence of catalytic amount of sulphur with compound B which is thiophosphorous compound such as phosphorous thioacid ester of Formula (1) and second mixture obtained by mixing compound A with compound C of Formula (2) which is obtained by reacting compound B with ethylene oxide, wherein each of these two mixtures independently provide high corrosion inhibition efficiency in case of high temperature naphthenic acid corrosion inhibition and sulphur corrosion inhibition. The invention is useful in all hydrocarbon processing units, such as, refineries, distillation columns and other petrochemical industries. | 10-21-2010 |
20110042268 | ADDITIVES FOR REDUCING COKING OF FURNACE TUBES - Fouling of hot furnace surfaces in selected refinery processes can be stopped or at least mitigated using an antifouling agent. The antifouling agents include sulfurized oil and may include other components selected from the group consisting of magnesium and aluminum overbases, a-olefin copolymers, and combinations thereof. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b) | 02-24-2011 |
20120211400 | Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using - Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from stainless steels including chromium in the range of 15.0 to 26.0 wt. % based on the total weight of the stainless steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof. | 08-23-2012 |
20130048535 | DESIGN DEVELOPMENT AND IMPLEMENTATION OF ANALYZER BASED CONTROL SYSTEM AND ALGORITHM - A method of correcting measurements of a chemical sensor used in an industrial facility. The method involves correcting for errors known to occur in the steady state and the dynamic state for specifically recognized situations. This method allows for correcting errors that occur due to deadtime, false zero measurements, and non-linear disturbances. The method combines automated measurement techniques and human know how to progressively learn and refine the accuracy of the corrections. | 02-28-2013 |
20140251868 | PROCESS AND APPARATUS FOR TREATING HYDROCARBON STREAMS - A process and apparatus are disclosed for treating a hydrocarbon stream, the process including flowing the hydrocarbon stream through a hydrocarbon treating vessel, heating a portion of the hydrocarbon treating vessel to a predetermined temperature and for a predetermined amount of time and controlling sensitization and chloride stress corrosion cracking of the portion of the interior surface of the hydrocarbon treating vessel. | 09-11-2014 |