公开(公告)号：US08440072B2

公开(公告)日：2013-05-14

申请号：US12509073

申请日：2009-07-24

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G17/02

CPC classification number: C10G17/00 ,  C10G17/04 ,  C10G21/16 ,  C10G29/22 ,  C10G31/08 ,  C10G2300/1033 ,  C10G2300/203 ,  C10G2300/205 ,  C10G2300/80

Abstract: Method of removing metals from hydrocarbon feedstock using esters of carboxylic acids, and additives for the same, are provided, wherein hydrocarbon stream including crude oil containing metals and salts thereof, wherein metal is calcium and its salt is calcium naphthenate, is mixed with an effective metal-removing-amount of an aqueous extraction-solution of non-precipitating and non-fouling additive comprising a chemical compound selected from a group consisting of methyl or ethyl or propyl or isopropyl mono- and/or di-esters of any one of the carboxylic acids selected from the groups consisting of maleic acid, maleic anhydride, and fumaric acid, or an appropriate combination of said esters, or an appropriate combination of any of said esters with any of said carboxylic acids to form a hydrocarbonous phase and an aqueous phase containing the metal ions; and separating aqueous phase.

公开(公告)号：US07906012B2

公开(公告)日：2011-03-15

申请号：US10196725

申请日：2002-07-16

Applicant: Perumangode Neelakantan Ramaswamy ,  Mahesh Subramaniyam

Inventor： Perumangode Neelakantan Ramaswamy ,  Mahesh Subramaniyam

IPC: C10G9/12 ,  C10G9/16

CPC classification number: B01D19/0404 ,  B01D19/0409 ,  C10G70/041 ,  Y10S585/952

Abstract: The present invention includes methods for improving the operational parameters in primary fractionators which are experiencing diminished operation efficiencies due to deposits of polymerized hydrocarbon species. The invention comprises the step of adding a foam reducing amount of a foam reducing composition at the primary fractionator. A reduction in foaming is achieved whereby the operational efficiency of the process is improved based upon operation parameters including, but not limited to, liquid-gas contact ratio, product top temperature, pressure differentials, gasoline end point or combinations thereof.

Abstract translation: 本发明包括用于改进主要分馏器中的操作参数的方法，其由于聚合的烃类物质的沉积而经历降低的操作效率。 本发明包括在初级分馏器中加入泡沫减少量的泡沫减少组合物的步骤。 实现发泡减少，由此基于包括但不限于液 - 气接触比，产物顶部温度，压力差，汽油终点或其组合的操作参数来改进工艺的操作效率。

公开(公告)号：US20090283449A1

公开(公告)日：2009-11-19

申请号：US12509073

申请日：2009-07-24

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G17/02 ,  C09K3/00

CPC classification number: C10G17/00 ,  C10G17/04 ,  C10G21/16 ,  C10G29/22 ,  C10G31/08 ,  C10G2300/1033 ,  C10G2300/203 ,  C10G2300/205 ,  C10G2300/80

Abstract: Method of removing metals from hydrocarbon feedstock using esters of carboxylic acids, and additives for the same, are provided, wherein hydrocarbon stream such as crude oil containing metals and slats thereof, such as calcium and calcium naphthenate, is mixed with an effective metal-removing-amount of an aqueous extraction-solution of non-precipitating and non-fouling additive comprising a chemical compound selected from a group consisting of methyl or ethyl or propyl or isopropyl mono- and/or di-esters of any of three carboxylic acids, such as, maleic acid, maleic anhydride, or fumaric acid or an appropriate combination of said esters, or an appropriate combination of any of said esters with any of said three acids, enabling formation of a hydrocarbonous phase and an aqueous phase containing the metal ions; and separating aqueous phase.

Abstract translation: 提供了使用羧酸酯和其添加剂从烃原料中除去金属的方法，其中将烃流如含有金属和其盐的原油（例如环烷酸钙和钙）与有效的金属去除混合 - 非沉淀和非结垢添加剂的水提取溶液的一种，其包含选自三种羧酸中的任何一种的甲基或乙基或丙基或异丙​​基单酯和/或二酯的化学化合物，例如 作为马来酸，马来酸酐或富马酸或所述酯的适当组合，或任何所述酯与所述三种酸中的任一种的适当组合，能够形成含有金属离子的烃相和水相; 并分离水相。

公开(公告)号：US06986839B2

公开(公告)日：2006-01-17

申请号：US10134661

申请日：2002-04-29

Applicant: Mahesh Subramaniyam ,  Bankar Prashant

Inventor： Mahesh Subramaniyam ,  Bankar Prashant

IPC: C10G9/16

CPC classification number: C10G75/04 ,  C10G19/02 ,  C23F15/005

Abstract: A method for inhibiting and dissolving the deposits formed on caustic or alkaline scrubbers used in scrubbing acidic gases such as carbon dioxide, hydrogen sulfide, which are formed during the pyrolytic cracking of naphtha, ethane, and propane. The cracking operations produce certain oxygenated compounds such as vinyl acetate or acetaldehyde, which undergo polymerization under alkaline condition. The vinyl acetate on hydrolysis releases acetaldehyde under alkaline conditions. Amino acids such as 6 amino caproic acid and lactams such as epsilon caprolactam not only prevent but also dissolve the polymers formed by aldol condensation.

公开(公告)号：US09434889B2

公开(公告)日：2016-09-06

申请号：US13885216

申请日：2011-11-14

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G29/22 ,  C10G17/02 ,  C10G19/00 ,  C10G31/08

CPC classification number: C10G29/22 ,  C10G17/02 ,  C10G19/00 ,  C10G31/08 ,  C10G2300/202 ,  C10G2300/80

Abstract: There is provided an additive and method for removal of calcium from crude oil or its blends containing calcium naphthenate at low pH as well as at high pH. Particularly, there is also provided an additive and method for removal of calcium from crude oil or its blends containing calcium naphthenate under basic or alkaline conditions and at low pH as well as at high pH varying from about 5 to 11.

Abstract translation: 提供了在低pH和高pH下从原油或其含有环烷酸钙的共混物中除去钙的添加剂和方法。 特别地，还提供了在碱性或碱性条件下以及在低pH以及约5至11变化的高pH下从含有环烷酸钙的原油或其混合物中除去钙的添加剂和方法。

公开(公告)号：US09090837B2

公开(公告)日：2015-07-28

申请号：US12593622

申请日：2008-03-27

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G75/02 ,  C07F9/04

CPC classification number: C10G75/02 ,  C07F9/04

Abstract: 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 composition formed by reacting high reactive polyisobutylene (HRPIB) with phosphorous pentasulphide in presence of catalytic amount of sulphur provides 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.

Abstract translation: 本发明涉及在处理单元的金属表面中引起腐蚀的烃的加工领域。 本发明解决了高温环烷酸腐蚀和硫腐蚀的技术问题，并提供了抑制这些腐蚀类型的溶液。 在高催化量的硫存在下使高活性聚异丁烯（HRPIB）与五硫化磷反应形成的组合物在耐高温环烷酸腐蚀抑制和硫腐蚀抑制的情况下提供高腐蚀抑制效率。 本发明可用于所有烃处理装置，如炼油厂，蒸馏塔和其他石化行业。

公开(公告)号：US20120285865A1

公开(公告)日：2012-11-15

申请号：US13519831

申请日：2010-12-28

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G17/04 ,  C07C59/153

CPC classification number: C10G17/02 ,  B01D43/00 ,  C10G2300/205 ,  C10G2300/207 ,  C10G2300/80 ,  C10G2300/805 ,  E21B37/00 ,  E21B43/00

Abstract: An additive capable of avoiding formation of impurities and capable of removing or dissolving impurities formed and accumulated at the interphase of organic and aqueous layers on reaction between calcium naphthenate and sulfur compound including H2S in presence of water in mixture of crude oils containing calcium naphthenate and sulfur compound or H2S, wherein the additive is glyoxylic acid is provided. A method for avoiding formation of impurities and for removing or dissolving impurities formed and accumulated at the interphase of organic and aqueous layers on reaction between calcium naphthenate and sulfur compound including H2S in presence of water in mixture of crude oils containing calcium naphthenate and sulfur compound including H2S, comprising treating mixture of crude oils containing calcium naphthenate and sulfur compound or H2S with glyoxylic acid is also provided.

Abstract translation: 一种添加剂，其能够避免形成杂质，并且能够除去或溶解在含有环烷酸钙和硫的原油的混合物存在下，在环烷酸钙和包括H 2 S的硫化合物之间的反应中在有机层和水层的相间形成和积累的杂质 化合物或H2S，其中添加剂是乙醛酸。 一种用于在含有环烷酸钙和硫化合物的原油混合物中存在水的情况下，避免形成杂质并除去或溶解形成和积累在有机层和水层间的杂质的方法，所述杂质包括环烷酸钙和包括H 2 S在内的硫化合物之间的反应，所述原油包含 H2S还包括用乙醛酸处理含有环烷酸钙和硫化合物或H 2 S的原油的混合物。

公开(公告)号：US20120045361A1

公开(公告)日：2012-02-23

申请号：US13264695

申请日：2010-04-15

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C23F11/04 ,  C09K3/00

CPC classification number: C10G75/02 ,  B01D3/34 ,  C02F2303/08 ,  C09K8/524 ,  C09K8/54 ,  C10G7/00 ,  C10G7/10 ,  C10G2300/1033 ,  C10G2300/203 ,  C10G2300/4075 ,  C10G2300/80 ,  C23F11/04

Abstract: The present invention relates to inhibition of high temperature naphthenic acid corrosion occurring in hydrocarbon processing units. The invention provides an effective novel non-polymeric and non-fouling additive for inhibiting high-temperature naphthenic acid corrosion, comprising an effective corrosion-inhibiting amount of a second phosphate ester wherein said second phosphate ester is obtained by reacting a first phosphate ester with an oxirane compound selected from the group consisting of butylene oxide, ethylene oxide, propylene oxide or any other oxirane compound or a combination thereof, preferably with butylene oxide, capably yielding said second phosphate ester, having a structure A or B, wherein R1 and R2 are each independently selected from the group consisting of moieties having 1 to 20 carbon atoms and R1 and R2 may be identical or different, X is H, CH3 or C2H5; and n may vary from 1 to 20, wherein said first phosphate ester is having a structure I or II, wherein R1 and R2 are each independently selected from the group consisting of moieties having 1 to 20 carbon atoms and R1 and R2 may be identical or different, said first phosphate ester being obtained as a reaction product of reaction of an alcohol with a phosphorous pentaoxide.

Abstract translation: 本发明涉及抑制在烃处理装置中发生的高温环烷酸腐蚀。 本发明提供了一种用于抑制高温环烷酸腐蚀的有效的新型非聚合和非污染添加剂，其包含有效的腐蚀抑制量的第二磷酸酯，其中所述第二磷酸酯是通过使第一磷酸酯与 环氧乙烷化合物，其选自环氧丁烷，环氧乙烷，环氧丙烷或任何其它环氧乙烷化合物或其组合，优选与环氧丁烷，能够产生具有结构A或B的所述第二磷酸酯，其中R 1和R 2为 各自独立地选自具有1至20个碳原子的部分，R 1和R 2可以相同或不同，X是H，CH 3或C 2 H 5; 并且n可以在1至20之间变化，其中所述第一磷酸酯具有结构I或II，其中R 1和R 2各自独立地选自具有1至20个碳原子的部分，并且R 1和R 2可以相同或 不同的是，所述第一磷酸酯作为醇与五氧化二磷反应的反应产物得到。

公开(公告)号：US20110214980A1

公开(公告)日：2011-09-08

申请号：US13060819

申请日：2009-08-25

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C23F14/02 ,  C08F279/00

CPC classification number: C10G75/02 ,  C10G2300/4075 ,  C10L1/2683 ,  C10L10/04

Abstract: The present invention relates to the field of corrosion inhibition in hydrocarbon fluid processing units. The present invention comprises a new additive for inhibiting acid corrosion comprising polymeric thiophosphate ester, which is obtained by reaction of a polymer compound having mono, di or poly hydroxyl group, preferably polymer compound which is hydroxyl-termination, more preferably said polymer compound comprising hydroxyl-terminated polyisobutylene or polybutene and phosphorous pentasulphide. Said polymeric thiophosphate ester is further reacted with any oxide selected from group consisting of ethylene oxide, butylenes oxide or propylene oxide or such other oxide, preferably ethylene oxide, capably forming ethylene oxide derivative of thiophosphate ester. The invention is useful effecting acid corrosion inhibition on the metal surfaces of a distillation unit, distillation column, trays, packing and pump around piping.

Abstract translation: 本发明涉及烃流体处理单元中的腐蚀抑制领域。 本发明包括用于抑制酸腐蚀的新添加剂，其包括聚合硫代磷酸酯，其通过具有单羟基，二羟基或多羟基的高分子化合物，优选羟基终止的高分子化合物，更优选所述包含羟基的聚合物化合物 终止的聚异丁烯或聚丁烯和五硫化磷。 所述聚合硫代磷酸酯进一步与选自环氧乙烷，氧化丁烯或环氧丙烷或其它氧化物，优选环氧乙烷，可以形成硫代磷酸酯的环氧乙烷衍生物的任何氧化物反应。 本发明有利于在蒸馏单元，蒸馏塔，塔板，填料和管道周围的泵的金属表面上对酸腐蚀抑制。

公开(公告)号：US20100163457A1

公开(公告)日：2010-07-01

申请号：US12376962

申请日：2007-08-21

Applicant: Mahesh Subramaniyam

Inventor： Mahesh Subramaniyam

IPC: C10G17/04

CPC classification number: C10G17/04 ,  C10G21/16

Abstract: The invention relates to field of processing hydrocarbon feedstock including crude oil, wherein metals such as calcium are removed. In the face of the rising prices of crude oil, refiners are forced to process opportunity crudes such as DOBA, which pose many problems including fouling of equipment due to certain metallic salts, such as calcium napthenate. Calcium, which cannot be removed from crude oil during normal desalting process, poses very serious problems. The invention provides method for removal of calcium, wherein crude oil is mixed, with effective metal removing amount of aqueous extraction solution of an additive comprising a chemical compound selected from a group consisting of metallic acid, maleic anhydride or fumaric acid or salts or derivatives thereof, enabling separation of hydrocarboneous phase and aqueous phase containing metal ions, in crude desalter. Only hydrocarboneous phase devoid of calcium is processed further, thereby preventing fouling of equipment.

Abstract translation: 本发明涉及包括原油在内的烃原料的处理领域，其中除去诸如钙的金属。 面对原油价格上涨，炼油厂被迫处理诸如DOBA等机遇原因，造成许多问题，包括因某些金属盐造成的设备污染，如环烷酸钙。 在正常脱盐过程中不能从原油中除去的钙会造成非常严重的问题。 本发明提供了除去钙的方法，其中将原油混合，并将有效金属去除量的包含选自金属酸，马来酸酐或富马酸的化合物或其盐或衍生物的添加剂的水提取溶液 ，能够在粗脱盐剂中分离含烃相和含水相金属离子。 仅进一步处理没有钙的烃系相，从而防止设备结垢。