GB1500519A - Distillation column reboiler control system - Google Patents

Distillation column reboiler control system

Info

Publication number
GB1500519A
GB1500519A GB14733/75A GB1473375A GB1500519A GB 1500519 A GB1500519 A GB 1500519A GB 14733/75 A GB14733/75 A GB 14733/75A GB 1473375 A GB1473375 A GB 1473375A GB 1500519 A GB1500519 A GB 1500519A
Authority
GB
United Kingdom
Prior art keywords
heater
reboiler
flow
section
passed
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB14733/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell UOP LLC
Original Assignee
UOP LLC
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 UOP LLC filed Critical UOP LLC
Publication of GB1500519A publication Critical patent/GB1500519A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
    • B01D3/322—Reboiler specifications
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/42—Regulation; Control
    • B01D3/4211—Regulation; Control of columns
    • B01D3/4283—Bottom stream
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

1500519 Controlling heat input to distillation column UOP Inc 10 April 1975 [11 April 1974] 14733/75 Heading C5E [Also In Division B1] In a method for controlling the heat input to the reboiler section 4a of a hydrocarbon distillation column in response to variation in the steady state operation of the column, the heat input, e.g. from a hot fluid or fuel line 19, to reboiler heater 17 is regulated in response to a signal representative of the flow rate of vapour passing into fractionation section 1 from reboiler section 4a, e.g. through the orifice plate or a venturi in riser 11, bottoms liquid being passed to and from the reboiler section to air from heater 17, e.g. via 37 and 38. A portion only of the bottoms liquid may be passed through heater 17, a second portion being passed through another heat recovery reboiler. The method may be used in the recovery of styrene from an ethylbenzene dehydrogenation system, the separation of xylene isomers, separation of aromatic/non-aromatic hydrocarbon mixtures and ethylbenzene from xylene isomers. Thus in an extractive distillation process, stock comprising 83À96% by volume aromatic hydrocarbons, 2À45% naphthenes and 13À95% paraffins is introduced at 2, sulpholane solvent containing 3À25% water esters at 2 at 260‹ F. at a solvent/stock mol. ratio of 3:1. Reboiler section 4a operates at 17À0 p.s.i.g. and 350‹ F. The temperature of bottom material flowing through 37 to heater 17 is 312‹ F. and sufficient fuel is fed via line 16 to produce a mixed phase in line 38 at 350‹ F. If there is an increase in rate of flow through conduit 37 to heater 17 resulting in a lower temperature in liquid returned via 38, the resulting decrease in flow of vapour through riser 11 is sensed by flow recorder controller 13 and valve 15 is operated to increase the flow of fuel to heater 17.
GB14733/75A 1974-04-11 1975-04-10 Distillation column reboiler control system Expired GB1500519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US459975A US3881994A (en) 1974-04-11 1974-04-11 Distillation column reboiler control system

Publications (1)

Publication Number Publication Date
GB1500519A true GB1500519A (en) 1978-02-08

Family

ID=23826912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14733/75A Expired GB1500519A (en) 1974-04-11 1975-04-10 Distillation column reboiler control system

Country Status (12)

Country Link
US (1) US3881994A (en)
JP (1) JPS50141577A (en)
BR (1) BR7502197A (en)
CA (1) CA1057222A (en)
DE (1) DE2515282A1 (en)
ES (1) ES436431A1 (en)
FR (1) FR2267134B1 (en)
GB (1) GB1500519A (en)
IN (1) IN145047B (en)
IT (1) IT1037220B (en)
PL (1) PL102736B1 (en)
SU (1) SU591127A3 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964975A (en) * 1974-08-19 1976-06-22 Texaco Inc. Means for controlling the temperature of a depropanizer tower
US4003799A (en) * 1975-06-12 1977-01-18 Uop Inc. Method for controlling heat input to the reboiler section of a distillation column
US4046638A (en) * 1975-06-12 1977-09-06 Uop Inc. Method for controlling heat input to the reboiler section of a distillation column
EP0005138B1 (en) * 1978-04-28 1982-04-07 Texaco Development Corporation Process for producing synthesis gas with wash water purification and novel flash column for use in said process
DE2916175A1 (en) * 1979-04-21 1980-10-23 Krupp Koppers Gmbh METHOD FOR CONTROLLING THE AMOUNT OF HEAT SUPPLIED TO AN EXTRACTIVE DISTILLATION COLUMN
US4501657A (en) * 1983-02-01 1985-02-26 Phillips Petroleum Company Preheating of distillation feed
DE3327952A1 (en) * 1983-08-03 1985-02-14 Basf Ag, 6700 Ludwigshafen METHOD FOR THE DISTILLATIVE DISASSEMBLY OF AN AZEOTROPIC MIXTURE MIXTURE - ANALOGUE OF AN EXTRACTIVE DISTILLATION - BY MEANS OF A DISTILLATION COLUMN
GB2193110B (en) * 1986-08-02 1990-07-18 Lucas Ind Plc Solvent cleaning apparatus
JPH02115002A (en) * 1988-10-21 1990-04-27 Nkk Corp Rectifying method and apparatus
US5205909A (en) * 1991-12-04 1993-04-27 Union Carbide Chemicals & Plastics Technology Corporation Apparatus for measuring reflux flow in a distillation column
DE19849651C2 (en) 1998-10-29 2003-01-16 Krupp Uhde Gmbh Rectifying column for the extractive distillation of closely or azeotropically boiling mixtures
CN100418601C (en) * 2006-03-21 2008-09-17 浙江工业大学 Refluence control device of rectifying column
US8460517B2 (en) * 2009-09-02 2013-06-11 Gtc Technology Us Llc Methods and apparatuses for steam addition to a reboiler coupled to an extractive distillation column for improved extractive distillation
FR2961270B1 (en) * 2010-06-11 2017-07-28 Air Liquide METHOD AND APPARATUS FOR DRYING AND COMPRESSING A CO2-RICH FLOW
FI20205420A1 (en) * 2020-04-27 2021-10-28 Chempolis Oy Heteroazeotropic extractive distillation method and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225550A (en) * 1963-03-04 1965-12-28 Phillips Petroleum Co Fractional distillation control system
US3411308A (en) * 1967-01-03 1968-11-19 Phillips Petroleum Co Method and apparatus for controlling by a material balance the bottoms flow rate in a fractional distillation system
US3442767A (en) * 1968-05-16 1969-05-06 Sinclair Research Inc Stripping operation without overhead reflux and the control of the water content in the system
US3766021A (en) * 1971-05-03 1973-10-16 Phillips Petroleum Co Process and apparatus for fractionator reboiling with minimized fouling by centifuging and decanting
US3803002A (en) * 1971-07-23 1974-04-09 Phillips Petroleum Co Method and apparatus for controlling the operating of a fractionator

Also Published As

Publication number Publication date
SU591127A3 (en) 1978-01-30
IN145047B (en) 1978-08-19
IT1037220B (en) 1979-11-10
FR2267134A1 (en) 1975-11-07
ES436431A1 (en) 1977-01-01
CA1057222A (en) 1979-06-26
JPS50141577A (en) 1975-11-14
PL102736B1 (en) 1979-04-30
BR7502197A (en) 1976-02-10
FR2267134B1 (en) 1979-06-01
US3881994A (en) 1975-05-06
DE2515282A1 (en) 1975-10-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee