公开(公告)号：US3224959A

公开(公告)日：1965-12-21

申请号：US21537962

申请日：1962-08-07

Applicant: TEXACO INC

Inventor： SCHLINGER WARREN G ,  BRODEUR CHARLES H ,  MARION CHARLES P

IPC: C10G65/12

CPC classification number: C10G65/12

公开(公告)号：US3549514A

公开(公告)日：1970-12-22

申请号：US3549514D

申请日：1969-01-09

Applicant: TEXACO INC

Inventor： BROWN WILLIAM F ,  CROCKETT WILLIAM E ,  BRODEUR CHARLES H

IPC: C10G73/34 ,  G05D21/00 ,  C10G43/08

CPC classification number: C10G73/34 ,  Y10S208/01 ,  Y10T436/12

公开(公告)号：US3354075A

公开(公告)日：1967-11-21

申请号：US51739065

申请日：1965-12-29

Applicant: TEXACO INC

Inventor： BRODEUR CHARLES H ,  SCHLINGER WARREN G

CPC classification number: C10G47/22 ,  C10G47/00 ,  C10G65/12

公开(公告)号：US3565786A

公开(公告)日：1971-02-23

申请号：US3565786D

申请日：1968-11-08

Applicant: TEXACO INC

Inventor： BROWN WILLIAM F ,  CROCKETT WILLIAM E ,  BRODEUR CHARLES H

IPC: C10G73/34 ,  C10G21/30 ,  G01N33/28 ,  G05D11/08 ,  C10G43/08

CPC classification number: G01N33/2835 ,  C10G21/30 ,  Y10S203/19 ,  Y10S208/01

Abstract: DISCLOSED ARE METHODS AND APPARATUS FOR CONTROLLING THE COMPOSITION OF A FLUID SUCH AS THE SOLVENT MIXTURE UTILIZED IN SOLVENT DEWAXING PROCESSES. A PREFERRED METHOD FOR CONTROLLING SAID SOLVENT COMPOSITION INCLUDES THE STEPS OF GENERATING A FIRST SIGNAL REPRESENTATIVE OF A TARGET VALUE OF THE CONCENTRATION OF THE WAX ANTI-SOLVENT COMPONENT OF THE SOLVENT MIXTURE, SEPARATING THE SOLVENT MIXTURE INTO TWO FRACTIONS, ONE OF WHICH IS RICHER AND THE OTHER POORER OF THE WAX ANTI-SOLVENT COMPONENT, COMBINING THE FRACTIONS TO RE-ESTABLISH THE SOLVENT MIXTURE, SENSING THE CONCENTRATION OF THE ANTI-SOLVENT COMPONENT IN THE RE-ESTABLISHED SOLVENT MIXTURE AND PROVIDING A SECOND SIGNAL REPRESENTATIVE THEREOF, AND CONTROLLING THE AFOREMENTIONED COMBINING STEP IN RESPONSE TO THE FIRST AND SECOND SIGNALS IN A MANNER TENDING TO REDUCE THE DISPARITY BETWEEN THE CONCENTRATION SECOND SIGNAL AND THE TARGET VALUE FIRST SIGNAL, THEREBY TENDING TO ACHIEVE THE TARGET VALUE COMPOSITION OF THE RE-ESTABLISHES SOLVENT MIXTURE. A PREFERRED APPARATUS FOR CONTROLLING THE COMPOSITION OF THE AFOREMENTIONED SOLVENT MIXTURE INCLUDES SIGNAL GENERATING MEANS FOR PROVIDING A FIRST SIGNAL REPRESENTATIVE OF THE AFOREMENTIONED TARGET VALUE, MEANS INCLUDING A FRACTIONATOR FOR SEPARATING THE SOLVENTMIXTURE INTO THE AFOREMENTIONED FRACTIONS, MEANS INCLUDING A MIXING TANK WITH AUTOMATIC INLET FLOW CONTROL VALVES FOR COMBINING THE FRACTIONS TO RE-ESTABLISH THE SOLVENT MIXTURE, MEANS INCLUDING A PHOTOMETRIC ANALYZER FOR SENSING THE CONCENTRATION OF THE WAX ANTI-SOLVENT COMPONENT IN THE REESTABLISHED SOLVENT MIXTURE, AND MEANS INCLUDING A DUPLEX CONTROLLER RESPONSIVE TO THE FIRST AND SECOND SIGNALS FOR CONTROLLING THE MIXING TANK INLET VALVES IN A MANNER TENDING TO ACSHIEVE THE TARGET VALUE COMPOSITION OF THE REESTABLISHED SOLVENT MIXTURE.

公开(公告)号：US3546107A

公开(公告)日：1970-12-08

申请号：US3546107D

申请日：1968-01-11

Applicant: TEXACO INC

Inventor： BROWN WILLIAM F ,  BRODEUR CHARLES H ,  CROCKETT WILLIAM E

IPC: B01D11/04 ,  B01J19/00 ,  C07C9/14 ,  C10G21/30 ,  G05B15/00 ,  G05D21/00 ,  G05D24/00 ,  G05D24/02 ,  G06G7/75 ,  G07C3/14 ,  C10G21/00 ,  B01D11/00

CPC classification number: G07C3/14 ,  C10G21/30 ,  G06G7/75 ,  Y10S203/19 ,  Y10S208/01