[go: up one dir, main page]

KR970006463A - 접촉 분해 가솔린의 탈황방법 - Google Patents

접촉 분해 가솔린의 탈황방법 Download PDF

Info

Publication number
KR970006463A
KR970006463A KR1019960030205A KR19960030205A KR970006463A KR 970006463 A KR970006463 A KR 970006463A KR 1019960030205 A KR1019960030205 A KR 1019960030205A KR 19960030205 A KR19960030205 A KR 19960030205A KR 970006463 A KR970006463 A KR 970006463A
Authority
KR
South Korea
Prior art keywords
hydrogen
desulfurization
partial pressure
less
lhsv
Prior art date
Application number
KR1019960030205A
Other languages
English (en)
Other versions
KR0173063B1 (ko
Inventor
시게토 하타나카
사토루 히기타
오사무 사다카네
다다오 미야마
Original Assignee
이즈미야 요시히코
미쓰비시세키유 가부시키가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이즈미야 요시히코, 미쓰비시세키유 가부시키가이샤 filed Critical 이즈미야 요시히코
Publication of KR970006463A publication Critical patent/KR970006463A/ko
Application granted granted Critical
Publication of KR0173063B1 publication Critical patent/KR0173063B1/ko
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
    • C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
    • C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
    • C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

본 발명은 올레핀의 수소화로 인한 옥탄가의 저하를 최소한으로 막고 또한 높은 탈황율을 달성할 수 있는 접촉 분해 가솔린의 탈황방법에 관한 것이다.
원료인 접촉 분해 가솔린을 하기의 다단계 공정을 사용하여 처리한다.
① 제1공정 : 반응기 입구 황화수소 농도 0.1용량% 이하, 반응 온도 200 내지 350℃, 수소 분압 5 내지 30kg/㎠, 수소/오일 비율 500 내지 3,000scf/bbl, 액 공간 속도(LHSV) 2 내지 10ℓ/hr의 조건에서 수소화 탈황 촉매를 사용하고 탈황율 60내지 90%의 범위에서 실시하는 탈황 처리 공정.
② 제2공정 : 제1공정의 생성유에 대해 반응기 입구 황화수소 농도 0.05용량% 이하, 반응 온도 200 내지 300℃, 수소 분압 5 내지 15kg/㎠, 수소/오일 비율 1,000 내지 3,000scf/bbl, 액 공간 속도(LHSV) 2 내지 10ℓ/hr의 조건에서 수소화 탈황 촉매를 사용하고 탈황율 60 내지 90%의 범위에서 실시하는 탈황 처리 공정 및 ③ 제3공정 이후 : 제2공정의 생성유의 황 농도가 목표치 이하로 되지 않는 경우, 목표치 이하로 될 때까지 ②의 공정을 필요한 횟수로 반복 실시하는 탈황 처리 공정.

Description

접촉 분해 가솔린의 탈황방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (3)

  1. 다음의 다단계 공정을 사용하여 처리함을 특징으로 하는 접촉 분해 가솔린의 탈황방법. ① 제1공정 : 반응기 입구 황화수소 농도 0.1용량% 이하, 반응 온도 200 내지 350℃, 수소 분압 5 내지 30kg/㎠, 수소/오일 비율 500 내지 3,000scf/bbl, 액 공간 속도(LHSV) 2 내지 10ℓ/hr의 조건에서 수소화 탈황 촉매를 사용하고 탈황율 60내지 90%의 범위에서 실시하는 탈황 처리 공정. ② 제2공정 : 제1공정의 생성유에 대해 반응기 입구 황화수소 농도 0.05용량% 이하, 반응 온도 200 내지 300℃, 수소 분압 5 내지 15kg/㎠, 수소/오일 비율 1,000 내지 3,000scf/bbl, 액 공간 속도(LHSV) 2 내지 10ℓ/hr의 조건에서 수소화 탈황 촉매를 사용하고 탈황율 60 내지 90%의 범위에서 실시하는 탈황 처리 공정 및 ③ 제3공정 이후 : 제2공정의 생성유의 황 농도가 목표치 이하로 되지 않는 경우, 목표치 이하로 될 때까지 ②의 공정을필요한 횟수로 반복 실시하는 탈황 처리 공정.
  2. 제1항에 있어서, 각 공정에서 올레핀의 수소화율이 20% 이하인 동시에 전체 공정을 경유한 이후의 올레핀의 총 수소화율이 40% 이하인 범위에서 탈황시킴을 특징으로 하는 접촉 분해 가솔린의 탈황방법.
  3. 제1항 또는 제2항에 있어서, 전체 공정을 경유한 이후의, 티올에 기인하는 황 농도가 5중량ppm 이하임을 특징으로 하는 접촉 분해 가솔린의 탈황방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960030205A 1995-07-26 1996-07-25 접촉 분해 가솔린의 탈황방법 Expired - Lifetime KR0173063B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20930495A JP3387700B2 (ja) 1995-07-26 1995-07-26 接触分解ガソリンの脱硫方法
JP95-209304 1995-07-26

Publications (2)

Publication Number Publication Date
KR970006463A true KR970006463A (ko) 1997-02-21
KR0173063B1 KR0173063B1 (ko) 1999-03-20

Family

ID=16570745

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960030205A Expired - Lifetime KR0173063B1 (ko) 1995-07-26 1996-07-25 접촉 분해 가솔린의 탈황방법

Country Status (8)

Country Link
US (1) US5906730A (ko)
EP (1) EP0755995B1 (ko)
JP (1) JP3387700B2 (ko)
KR (1) KR0173063B1 (ko)
CA (1) CA2182060C (ko)
DE (1) DE69616197T2 (ko)
SG (1) SG66319A1 (ko)
TW (1) TW325497B (ko)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6231753B1 (en) 1996-02-02 2001-05-15 Exxon Research And Engineering Company Two stage deep naphtha desulfurization with reduced mercaptan formation
US6409913B1 (en) 1996-02-02 2002-06-25 Exxonmobil Research And Engineering Company Naphtha desulfurization with reduced mercaptan formation
US6231754B1 (en) 1996-02-02 2001-05-15 Exxon Research And Engineering Company High temperature naphtha desulfurization using a low metal and partially deactivated catalyst
FR2790000B1 (fr) * 1999-02-24 2001-04-13 Inst Francais Du Petrole Procede de production d'essences a faible teneur en soufre
US6692635B2 (en) * 1999-02-24 2004-02-17 Institut Francais Du Petrole Process for the production of gasolines with low sulfur contents
FR2797639B1 (fr) 1999-08-19 2001-09-21 Inst Francais Du Petrole Procede de production d'essences a faible teneur en soufre
US6387249B1 (en) 1999-12-22 2002-05-14 Exxonmobil Research And Engineering Company High temperature depressurization for naphtha mercaptan removal
CA2393753C (en) * 1999-12-22 2010-07-20 Bruce Randall Cook High temperature depressurization for naphtha mercaptan removal
US6303020B1 (en) * 2000-01-07 2001-10-16 Catalytic Distillation Technologies Process for the desulfurization of petroleum feeds
FR2811328B1 (fr) * 2000-07-06 2002-08-23 Inst Francais Du Petrole Procede comprenant deux etapes d'hydrodesulfuration d'essence et une elimination intermediaire de l'h2s forme au cours de la premiere etape
US6416659B1 (en) 2000-08-17 2002-07-09 Catalytic Distillation Technologies Process for the production of an ultra low sulfur
US6736962B1 (en) * 2000-09-29 2004-05-18 Exxonmobil Research And Engineering Company Catalytic stripping for mercaptan removal (ECB-0004)
US6495030B1 (en) * 2000-10-03 2002-12-17 Catalytic Distillation Technologies Process for the desulfurization of FCC naphtha
US7052598B2 (en) 2001-03-12 2006-05-30 Institut Francais Du Petrole Process for the production of gasoline with a low sulfur content comprising a hydrogenation, a fractionation, a stage for transformation of sulfur-containing compounds and a desulfurization
FR2821850B1 (fr) * 2001-03-12 2007-04-27 Inst Francais Du Petrole Procede de production d'essence a faible teneur en soufre comprenant une hydrogenation, un fractionnement, une etape de transformation des composes soufres et une desulfuration
US7374667B2 (en) 2001-03-12 2008-05-20 Bp Corporation North America, Inc. Process for the production of gasoline with a low sulfur content comprising a stage for transformation of sulfur-containing compounds, an acid-catalyst treatment and a desulfurization
US20020175108A1 (en) 2001-03-12 2002-11-28 Institut Francais Du Petrole Process for the production of a desulfurized gasoline from a gasoline fraction that contains conversion gasoline
FR2821851B1 (fr) * 2001-03-12 2004-06-04 Inst Francais Du Petrole Procede de production d'essence a faible teneur en soufre comprenant une etape de transformation des composes soufres, un traitement sur catalyseur acide et une desulfuration
US6673237B2 (en) 2001-11-28 2004-01-06 Corning Incorporated High performance monolith treater for gasoline upgrade
US7153415B2 (en) * 2002-02-13 2006-12-26 Catalytic Distillation Technologies Process for the treatment of light naphtha hydrocarbon streams
FR2837831B1 (fr) * 2002-03-29 2005-02-11 Inst Francais Du Petrole Procede de production d'hydrocarbures a faible teneur en soufre et en mercaptans
BR0202413A (pt) 2002-06-26 2004-05-11 Petroleo Brasileiro Sa Processo de hidrodessulfurização seletiva de correntes olefìnicas
JP5036074B2 (ja) * 2003-09-26 2012-09-26 Ｊｘ日鉱日石エネルギー株式会社 環境対応ガソリン
JP4803785B2 (ja) * 2003-09-26 2011-10-26 Ｊｘ日鉱日石エネルギー株式会社 ガソリン基材の製造方法、環境対応ガソリン、およびその製造方法
US7341657B2 (en) * 2003-12-22 2008-03-11 China Petroleum & Chemical Corporation Process for reducing sulfur and olefin contents in gasoline
US7785461B2 (en) * 2004-11-10 2010-08-31 Petroleo Brasileiro S.A. - Petrobras Process for selective hydrodesulfurization of naphtha
US20060151359A1 (en) * 2005-01-13 2006-07-13 Ellis Edward S Naphtha desulfurization process
BRPI0502040A (pt) * 2005-05-13 2007-01-09 Petroleo Brasileiro Sa processo de hidrodessulfurização seletiva de nafta
FR2888583B1 (fr) * 2005-07-18 2007-09-28 Inst Francais Du Petrole Nouveau procede de desulfuration d'essences olefiniques permettant de limiter la teneur en mercaptans
US20070114156A1 (en) * 2005-11-23 2007-05-24 Greeley John P Selective naphtha hydrodesulfurization with high temperature mercaptan decomposition
BRPI0601787B1 (pt) 2006-05-17 2016-06-07 Petroleo Brasileiro Sa processo de hidrodessulfurização seletiva de nafta
US7842181B2 (en) * 2006-12-06 2010-11-30 Saudi Arabian Oil Company Composition and process for the removal of sulfur from middle distillate fuels
JP5123635B2 (ja) 2007-10-12 2013-01-23 Ｊｘ日鉱日石エネルギー株式会社 ガソリン基材の製造方法及びガソリン
US8142646B2 (en) 2007-11-30 2012-03-27 Saudi Arabian Oil Company Process to produce low sulfur catalytically cracked gasoline without saturation of olefinic compounds
EP2250129A2 (en) 2008-02-21 2010-11-17 Saudi Arabian Oil Company Catalyst to attain low sulfur gasoline
KR101111006B1 (ko) * 2008-08-14 2012-02-15 에스케이에너지 주식회사 석유계 탄화수소 탈황 공정의 수소 회수 방법 및 장치
US9005432B2 (en) 2010-06-29 2015-04-14 Saudi Arabian Oil Company Removal of sulfur compounds from petroleum stream
CN101905165B (zh) * 2010-08-12 2012-07-18 中国石油天然气股份有限公司 一种汽油选择性加氢脱硫催化剂的制备和应用
US8535518B2 (en) 2011-01-19 2013-09-17 Saudi Arabian Oil Company Petroleum upgrading and desulfurizing process
CN102604673B (zh) * 2011-01-20 2014-12-03 中国石油化工股份有限公司 一种生产低硫汽油的方法
CN102604672B (zh) * 2011-01-20 2014-05-28 中国石油化工股份有限公司 一种低硫汽油的生产方法
CN103059963B (zh) * 2011-10-21 2014-12-31 中国石油化工股份有限公司 一种生产清洁汽油的方法
CN103059952B (zh) * 2011-10-21 2014-12-31 中国石油化工股份有限公司 一种生产无硫清洁汽油的方法
FR2993569B1 (fr) * 2012-07-17 2015-12-04 IFP Energies Nouvelles Procede de desulfuration d'une essence
CN104549556B (zh) * 2013-10-28 2017-03-22 中国石油化工股份有限公司 一种提高催化剂选择性的方法
US9850435B2 (en) 2014-08-26 2017-12-26 Exxonmobil Research And Engineering Company Hydroprocessing with drum blanketing gas compositional control
RU2578150C1 (ru) * 2014-09-18 2016-03-20 Сергей Владиславович Дезорцев Способ получения экологически чистого жидкого ракетного топлива
CN106147856B (zh) * 2015-04-03 2018-04-13 中国石油化工股份有限公司 一种降低高硫高烯烃汽油原料硫含量的方法
CN106147839B (zh) * 2015-04-03 2018-06-19 中国石油化工股份有限公司 一种降低汽油硫含量的方法
CN106147844B (zh) * 2015-04-03 2018-04-13 中国石油化工股份有限公司 一种生产超低硫汽油的加氢方法
CN106147838B (zh) * 2015-04-03 2018-06-19 中国石油化工股份有限公司 一种生产超低硫汽油的方法
US10308883B2 (en) 2015-10-07 2019-06-04 Axens Process for desulfurizing cracked naphtha
WO2018111541A1 (en) 2016-12-15 2018-06-21 Exxonmobil Research And Engineering Company Process for improving gasoline quality from cracked naphtha
CA3049804A1 (en) 2017-02-21 2018-08-30 Exxonmobil Research And Engineering Company Desulfurization of a naphtha boiling range feed
US10752847B2 (en) 2017-03-08 2020-08-25 Saudi Arabian Oil Company Integrated hydrothermal process to upgrade heavy oil
US10703999B2 (en) 2017-03-14 2020-07-07 Saudi Arabian Oil Company Integrated supercritical water and steam cracking process
CN108620120B (zh) * 2017-03-24 2020-11-06 中国石油化工股份有限公司 一种催化柴油加氢转化催化剂的制备方法
US10526552B1 (en) 2018-10-12 2020-01-07 Saudi Arabian Oil Company Upgrading of heavy oil for steam cracking process
EP4516881A1 (de) 2023-08-29 2025-03-05 Linde GmbH Verfahren und anlage zur herstellung von olefinen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349027A (en) * 1965-02-08 1967-10-24 Gulf Research Development Co Multi-stage hydrodesulfurization process
US3732155A (en) * 1971-03-31 1973-05-08 Exxon Research Engineering Co Two-stage hydrodesulfurization process with hydrogen addition in the first stage
US3884797A (en) * 1971-09-27 1975-05-20 Union Oil Co Hydrofining-reforming process
US4131537A (en) * 1977-10-04 1978-12-26 Exxon Research & Engineering Co. Naphtha hydrofining process
FR2476118B1 (fr) * 1980-02-19 1987-03-20 Inst Francais Du Petrole Procede de desulfuration d'un effluent de craquage catalytique ou de craquage a la vapeur
US4801373A (en) * 1986-03-18 1989-01-31 Exxon Research And Engineering Company Process oil manufacturing process
GB8910711D0 (en) * 1989-05-10 1989-06-28 Davy Mckee London Process
US5110444A (en) * 1990-08-03 1992-05-05 Uop Multi-stage hydrodesulfurization and hydrogenation process for distillate hydrocarbons
US5358633A (en) * 1993-05-28 1994-10-25 Texaco Inc. Hydrodesulfurization of cracked naphtha with low levels of olefin saturation

Also Published As

Publication number Publication date
JPH0940972A (ja) 1997-02-10
CA2182060A1 (en) 1997-01-27
DE69616197D1 (de) 2001-11-29
US5906730A (en) 1999-05-25
EP0755995B1 (en) 2001-10-24
CA2182060C (en) 2000-06-27
SG66319A1 (en) 1999-07-20
KR0173063B1 (ko) 1999-03-20
EP0755995A1 (en) 1997-01-29
TW325497B (en) 1998-01-21
DE69616197T2 (de) 2002-06-06
JP3387700B2 (ja) 2003-03-17

Similar Documents

Publication Publication Date Title
KR970006463A (ko) 접촉 분해 가솔린의 탈황방법
US6334948B1 (en) Process for producing gasoline with a low sulphur content
US4243519A (en) Hydrorefining process
US5110444A (en) Multi-stage hydrodesulfurization and hydrogenation process for distillate hydrocarbons
US5114562A (en) Two-stage hydrodesulfurization and hydrogenation process for distillate hydrocarbons
EP1349905B1 (en) Method for forming a low-sulfur, high-octane naphtha for gasoline blending
KR970703408A (ko) 가솔린 개량 방법(Gasoline upgrading Process)
MXPA01006856A (es) Proceso que comprende dos etapas de hidrodesulfuracion de gasolina y una eliminacion intermediaria del acido sulfhidrico formado en el curso de la primera etapa.
KR830006412A (ko) 저점도 윤활유의 제조방법
US8652321B2 (en) Process for the production of a desulfurized gasoline from a gasoline fraction that contains conversion gasoline
KR100790912B1 (ko) 황 함량이 낮은 가솔린의 제조 방법
HUT67610A (en) Hydrodesulphurisation process
KR20010066892A (ko) 저유황 가솔린의 제조 방법
Bose Design parameters for a hydro desulfurization (HDS) unit for petroleum naphtha at 3500 barrels per day
US20030217951A1 (en) Process for the production of hydrocarbons with low sulfur and mercaptan content
US4059504A (en) Hydrotreating of pyrolysis gasoline
EP0725126A1 (en) Process for desulfurizing catalytically cracked gasoline
KR970705622A (ko) 가솔린 개량 공정(Gasoline upgrading process)
US4414102A (en) Process for reducing nitrogen and/or oxygen heteroatom content of a mineral oil
CA1132075A (en) Staged process for the production of middle distillate from a heavy distillate
US20170292080A1 (en) Process for the treatment of a gasoline
JP4186157B2 (ja) 水素化、分留、硫黄含有化合物の変換工程および脱硫を含む、低硫黄含量のガソリンを製造するための方法
KR101071881B1 (ko) 수소화처리 방법
TW522168B (en) Process for the desulfurization of petroleum feeds
US7776300B2 (en) Process for removing sulfur from a fuel gas stream

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19960725

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19960725

Comment text: Request for Examination of Application

PG1501 Laying open of application
E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19980818

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 19981027

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 19981027

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
PR1001 Payment of annual fee

Payment date: 20011017

Start annual number: 4

End annual number: 4

PR1001 Payment of annual fee

Payment date: 20021025

Start annual number: 5

End annual number: 5

PR1001 Payment of annual fee

Payment date: 20031023

Start annual number: 6

End annual number: 6

PR1001 Payment of annual fee

Payment date: 20041025

Start annual number: 7

End annual number: 7

PR1001 Payment of annual fee

Payment date: 20051025

Start annual number: 8

End annual number: 8

PR1001 Payment of annual fee

Payment date: 20061026

Start annual number: 9

End annual number: 9

PR1001 Payment of annual fee

Payment date: 20071026

Start annual number: 10

End annual number: 10

PR1001 Payment of annual fee

Payment date: 20081024

Start annual number: 11

End annual number: 11

PR1001 Payment of annual fee

Payment date: 20091022

Start annual number: 12

End annual number: 12

PR1001 Payment of annual fee

Payment date: 20101027

Start annual number: 13

End annual number: 13

PR1001 Payment of annual fee

Payment date: 20110920

Start annual number: 14

End annual number: 14

PR1001 Payment of annual fee

Payment date: 20121002

Start annual number: 15

End annual number: 15

FPAY Annual fee payment

Payment date: 20131001

Year of fee payment: 16

PR1001 Payment of annual fee

Payment date: 20131001

Start annual number: 16

End annual number: 16

FPAY Annual fee payment

Payment date: 20141007

Year of fee payment: 17

PR1001 Payment of annual fee

Payment date: 20141007

Start annual number: 17

End annual number: 17

FPAY Annual fee payment

Payment date: 20151002

Year of fee payment: 18

PR1001 Payment of annual fee

Payment date: 20151002

Start annual number: 18

End annual number: 18

EXPY Expiration of term
PC1801 Expiration of term