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WO1996001250A1 - Procede de fabrication du formiate de potassium (iii) - Google Patents

Procede de fabrication du formiate de potassium (iii) Download PDF

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Publication number
WO1996001250A1
WO1996001250A1 PCT/SE1995/000727 SE9500727W WO9601250A1 WO 1996001250 A1 WO1996001250 A1 WO 1996001250A1 SE 9500727 W SE9500727 W SE 9500727W WO 9601250 A1 WO9601250 A1 WO 9601250A1
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
aqueous solution
potassium
anode
cathode
Prior art date
Application number
PCT/SE1995/000727
Other languages
English (en)
Inventor
Thomas Andersson
Original Assignee
Perstorp Ab
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 Perstorp Ab filed Critical Perstorp Ab
Priority to AU29401/95A priority Critical patent/AU2940195A/en
Publication of WO1996001250A1 publication Critical patent/WO1996001250A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C53/00—Saturated compounds having only one carboxyl group bound to an acyclic carbon atom or hydrogen
    • C07C53/02—Formic acid
    • C07C53/06—Salts thereof

Definitions

  • the present invention relates to a process for making potas ⁇ sium formate by means of an electrodialysis unit.
  • Potassium formate is, among other applications, used as a component in well servicing fluids, such as drilling fluids, for land based as well as offshore oil drilling.
  • Well dril ⁇ ling depends on many factors, such as the performance of used well servicing fluids.
  • Drilling fluids prevent uncontrolled influx of formation fluids into the well, removes formation cuttings from beneath the bit and transports them to the surface, seals exposed permeable formations, maintains the stability of exposed formations, cools and lubricates the bit and the drill string at points of contact with the cased or uncased drill hole and helps to suspend the weight of the drill string and casing.
  • a number of physical and chemical properties including the rheological properties, of drilling fluids are monitored to ensure satisfactory performance.
  • a major problem is created when the viscosity reduces with increasing temperature.
  • a well known method of stabili ⁇ sing rheological properties are the combination of brines, such as chlorides and formates of alkali metals, and poly ⁇ mers, which increases the critical temperature of the poly ⁇ mer.
  • Potassium formate has been found to exhibit excellent stabilising properties at high temperatures resulting in a critical temperature exceeding 200°C, as disclosed in the research report "High Temperature Stabilisation of Xanthan in Drilling Fluids by the Use of Formate Salts" by J.D.
  • Potassium formate is very suitable to use as a component in drilling fluids.
  • the salt provides a high density, required for deep well drilling, has a solubility in water exceeding that of other formates and is environmentally safe.
  • Potassium formate is produced by reacting carbon monoxide with potassium hydroxide in accordance with Reaction I below.
  • the production method according to Reaction I is disclosed in Enclyclopedia of Chemical Technology, 3rd. edition, volume 18, page 938.
  • the reaction is fairly slow and carried out by absorbing carbon monoxide, freed of acidic gases, in 50-80% by weight of potassium hydroxide at 100-200°C and at a pres ⁇ sure of CO > 690 kPa (> 100 psi).
  • the disadvantages of produ ⁇ cing potassium formate in accordance therewith are obvious and can be summarised: High temperature, high pressure and slow reaction. A high yielding, reliable and industrially applicable process for making potassium formate is presently not available and the availability of said compound is thus limited, being for instance a recovered by-product.
  • Potassium formate can naturally be made by the fundamental but industrially unsuitable or inconvenient reaction between potassium formate and formic acid according to Reaction II below, yielding 1 mole of industrial waste water per mole of potassium formate.
  • Reaction II HCOOH + KOH > HCOOK + H 2 0
  • the present invention provides a process for making potassium formate in an industrially suitable and convenient way, which process eliminates above disadvantages.
  • the process yields potassium formate from an electrodialysis device comprising at least one electrodialysis unit, which unit is divided into four compartments by alternating cation and anion membranes, at least one anode and at least one cathode.
  • the electrodia ⁇ lysis unit comprises three anion and two cation membranes.
  • the me branes are arranged parallelly with an anion membrane closest to both the anode and the cathode.
  • a concentrated aqueous solution of a potassium salt such as potassium sul ⁇ phate and/or potassium chloride
  • a diluted aqueous solution of a sodium salt such as sodium sulphate and/or sodium chloride
  • a concentrated aqueous solution of sodium formate is introdu ⁇ ced into the third compartment, which compartment is next to the forth one.
  • An electric current is introduced between an anode and a cathode.
  • a concentrated aqueous solution of po ⁇ tassium formate is whereby recovered from the second compart ⁇ ment being next to the first one and a concentrated aqueous solution of a sodium salt, such as sodium sulphate and/or sodium chloride, is recovered from the fourth compartment.
  • the recovered solutions result from an ion migration/exchange through the anion and cation membranes. This ion exchange is induced by said electric current between the anode and the cathode.
  • two or more electrodialysis units comprising four compartments combined in such a way that a fifth compartment corresponds to the first compartment, a sixth to the second, a seventh to the third, an eighth to the fourth, a ninth to the first, etc.
  • at least one elec ⁇ trolyte containing for instance an aqueous solution of a salt, such as potassium sulphate, potassium chloride or sodium for ⁇ mate, allowed to circulate through an anode compartment and a cathode compartment, which compartments not are included in the disclosed electrodialysis unit of four compartments.
  • the process is preferably a continuous process, but can also be performed as a batch process.
  • the process according to the present invention has a very low energy consumption and allows a production of large amounts of potassium formate.
  • an elec ⁇ trodialysis unit comprising four compartments 1, 2, 3 and 4 is showed.
  • the unit furthermore comprises three parallelly arranged anion membranes alternating with two likewise parallelly arranged cation membranes.
  • the unit is included in an electrodialysis device comprising, an anode, an anode compartment 5, a cathode, a cathode compartment 6 and a tank holding an electrolyte, in this case potassium sulphate.
  • An anion membrane is arranged closest to both the anode and the cathode.
  • the cation membranes and the anode is characterised by (+) and the anion membranes and the cathode by (-).
  • a concentrated aqueous solution of potassium sulphate is int ⁇ roduced into compartment 1, a concentrated aqueous solution of sodium formate into compartment 3 and a diluted aqueous solutions of sodium sulphate into compartment 4.
  • An electric current is introduced between the anode and the cathode and an electrolyte containing potassium sulphate is allowed to circulate from a tank through the anode 5 and the cathode 6 compartments.
  • a diluted aqueous solution of potassium sulphate is recovered from compartment 1, a concentrated aqueous solution of potas ⁇ sium formate from compartment 2, a diluted aqueous solution of sodium formate from compartment 3 and a concentrated aqueous solution of sodium sulphate from compartment 4.
  • Hydrogen (H 2 ) is emitted at the cathode and oxygen (0 ⁇ ) at the anode.
  • the electrolyte is by circulation from the anode to the cathode returned, in this case as potassium sulphate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

La présente invention concerne un procédé de fabrication du formiate de potassium par lequel le formiate de potassium est obtenu dans un appareil d'électrodialyse comprenant au moins une unité d'électrodialyse à quatre compartiments alternant membranes cationiques et anioniques, au moins une anode, et au moins une cathode. L'unité d'électrodialyse comporte trois membranes anioniques et deux membranes cationiques. Les membranes sont disposées parallèlement, la membrane anionique jouxtant tant l'anode que la cathode. Une solution aqueuse concentrée de sel de potassium est introduite dans le premier compartiment, une solution aqueuse diluée de sel de sodium dans le quatrième et une solution aqueuse concentrée de formiate de sodium dans le troisième compartiment. Une solution aqueuse concentrée de formiate de potassium est soutirée du deuxième compartiment et une solution aqueuse concentrée de sel de sodium est soutirée du quatrième compartiment. Les solutions obtenues résultent d'un échange d'ions au travers des membranes anioniques et cationiques.
PCT/SE1995/000727 1994-07-04 1995-06-16 Procede de fabrication du formiate de potassium (iii) WO1996001250A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29401/95A AU2940195A (en) 1994-07-04 1995-06-16 A process (iii) for making potassium formate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402349-6 1994-07-04
SE9402349A SE517708C2 (sv) 1994-07-04 1994-07-04 Förfarande för framställning av kaliumformiat III

Publications (1)

Publication Number Publication Date
WO1996001250A1 true WO1996001250A1 (fr) 1996-01-18

Family

ID=20394613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000727 WO1996001250A1 (fr) 1994-07-04 1995-06-16 Procede de fabrication du formiate de potassium (iii)

Country Status (3)

Country Link
AU (1) AU2940195A (fr)
SE (1) SE517708C2 (fr)
WO (1) WO1996001250A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6065500A (en) * 1996-12-13 2000-05-23 Petroline Wellsystems Limited Expandable tubing
US6492551B1 (en) 1998-09-25 2002-12-10 Kemira Chemicals Oy Method for manufacturing alkali metal or alkaline-earth metal formate
US6920935B2 (en) 1997-11-01 2005-07-26 Weatherford/Lamb, Inc. Expandable downhole tubing
US7093653B2 (en) 2002-10-25 2006-08-22 Weatherford/Lamb Downhole filter
US7188687B2 (en) 1998-12-22 2007-03-13 Weatherford/Lamb, Inc. Downhole filter
CN106693710A (zh) * 2017-01-19 2017-05-24 浙江大维高新技术股份有限公司 一种电渗析器及其溶液处理方法
KR101794843B1 (ko) * 2016-03-29 2017-11-07 (주)테크윈 전해 시스템 및 이를 이용한 전해 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779883A (en) * 1972-11-03 1973-12-18 Sybron Corp Pentaerythritol purification process
EP0242784A1 (fr) * 1986-04-18 1987-10-28 Perstorp AB Méthode dans la production d'un polyalcool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779883A (en) * 1972-11-03 1973-12-18 Sybron Corp Pentaerythritol purification process
EP0242784A1 (fr) * 1986-04-18 1987-10-28 Perstorp AB Méthode dans la production d'un polyalcool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6065500A (en) * 1996-12-13 2000-05-23 Petroline Wellsystems Limited Expandable tubing
US6920935B2 (en) 1997-11-01 2005-07-26 Weatherford/Lamb, Inc. Expandable downhole tubing
US7124830B2 (en) 1997-11-01 2006-10-24 Weatherford/Lamb, Inc. Methods of placing expandable downhole tubing in a wellbore
US6492551B1 (en) 1998-09-25 2002-12-10 Kemira Chemicals Oy Method for manufacturing alkali metal or alkaline-earth metal formate
US7188687B2 (en) 1998-12-22 2007-03-13 Weatherford/Lamb, Inc. Downhole filter
US7093653B2 (en) 2002-10-25 2006-08-22 Weatherford/Lamb Downhole filter
KR101794843B1 (ko) * 2016-03-29 2017-11-07 (주)테크윈 전해 시스템 및 이를 이용한 전해 방법
CN106693710A (zh) * 2017-01-19 2017-05-24 浙江大维高新技术股份有限公司 一种电渗析器及其溶液处理方法

Also Published As

Publication number Publication date
AU2940195A (en) 1996-01-25
SE9402349D0 (sv) 1994-07-04
SE9402349L (sv) 1996-01-05
SE517708C2 (sv) 2002-07-09

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