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ES405461A1 - Means and method for controlling the strength of acid in an alkylation unit - Google Patents

Means and method for controlling the strength of acid in an alkylation unit

Info

Publication number
ES405461A1
ES405461A1 ES405461A ES405461A ES405461A1 ES 405461 A1 ES405461 A1 ES 405461A1 ES 405461 A ES405461 A ES 405461A ES 405461 A ES405461 A ES 405461A ES 405461 A1 ES405461 A1 ES 405461A1
Authority
ES
Spain
Prior art keywords
acid
isoparaffin
olefin
alkylation unit
signal
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
ES405461A
Other languages
Spanish (es)
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.)
Texaco Development Corp
Original Assignee
Texaco Development Corp
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 Texaco Development Corp filed Critical Texaco Development Corp
Publication of ES405461A1 publication Critical patent/ES405461A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/56—Addition to acyclic hydrocarbons
    • C07C2/58—Catalytic processes
    • C07C2/62—Catalytic processes with acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/12—Condition responsive control

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Feedback Control In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

The strength of acid in an alkylation unit is controlled by a system using a signal corresponding to the anticipated demand on the acid by the reaction of olefin and isoparaffin in the presence of the acid. The reaction weakens the acid so that it is necessary to replace some of the weakened acid with fresh acid to maintain a desired acid strength. The control system includes apparatus sampling the olefin and isoparaffin entering the alkylation unit which provides a signal corresponding to the percent volume of acid degrading constituents formed during alkylation. A water analyzer samples the olefin and isoparaffin and provides a signal corresponding to their water content. Signals corresponding to sensed flow rates of fresh and discharged acid entering and leaving, respectively, the alkylation unit and of the olefin and isoparaffin are provided by sensors. A control circuit using analog computers develop the control signal in accordance with the signals from the sensors, the volume signal and the signal from the analyzer and equations hereinafter disclosed. The control signal is applied to a flow recorder controller which controls the flow rate of the fresh acid entering the alkylation unit so as to maintain the desired acid strength.
ES405461A 1971-08-05 1972-08-02 Means and method for controlling the strength of acid in an alkylation unit Expired ES405461A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16938571A 1971-08-05 1971-08-05

Publications (1)

Publication Number Publication Date
ES405461A1 true ES405461A1 (en) 1975-07-16

Family

ID=22615450

Family Applications (1)

Application Number Title Priority Date Filing Date
ES405461A Expired ES405461A1 (en) 1971-08-05 1972-08-02 Means and method for controlling the strength of acid in an alkylation unit

Country Status (12)

Country Link
US (1) US3733473A (en)
JP (1) JPS544637B2 (en)
AU (1) AU466991B2 (en)
BE (1) BE786859A (en)
CA (1) CA950558A (en)
ES (1) ES405461A1 (en)
FR (1) FR2149897A5 (en)
GB (1) GB1381408A (en)
IT (1) IT990507B (en)
NL (1) NL7210690A (en)
SE (1) SE378415B (en)
ZA (1) ZA724826B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819917A (en) * 1972-08-16 1974-06-25 Texaco Inc Means and method for controlling the hydrocarbon content of recycle acid in an alkylation unit
US4026668A (en) * 1973-12-20 1977-05-31 Eastman Kodak Company Control apparatus for silver halide emulsion making
US4018846A (en) * 1975-12-29 1977-04-19 Exxon Research And Engineering Company Method for continuously controlling the water content of sulfuric acid alkylation catalyst
US4251475A (en) * 1978-12-29 1981-02-17 Owens-Corning Fiberglas Corporation Method and apparatus for controlling the proportion of liquid and dry particulate matter added to a pelletizer
JPH04271492A (en) * 1991-02-27 1992-09-28 Fujitsu Ltd magnetic card transport rail
ATE517074T1 (en) * 2003-12-18 2011-08-15 Exxonmobil Chem Patents Inc IMPROVEMENTS IN OR RELATING TO CATALYTIZED REACTIONS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592063A (en) * 1949-12-15 1952-04-08 Tide Water Associated Oil Comp Acid analyzer and controller
US3108094A (en) * 1959-05-18 1963-10-22 Phillips Petroleum Co Olefin polymerization

Also Published As

Publication number Publication date
NL7210690A (en) 1973-02-07
JPS544637B2 (en) 1979-03-08
JPS4826703A (en) 1973-04-09
FR2149897A5 (en) 1973-03-30
BE786859A (en) 1973-01-29
CA950558A (en) 1974-07-02
ZA724826B (en) 1973-11-28
AU466991B2 (en) 1975-11-13
DE2237984A1 (en) 1973-02-15
DE2237984B2 (en) 1976-01-22
AU4471472A (en) 1974-01-24
SE378415B (en) 1975-09-01
US3733473A (en) 1973-05-15
GB1381408A (en) 1975-01-22
IT990507B (en) 1975-07-10

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