US2700650A - Alkali metal amalgam decomposer - Google Patents

Alkali metal amalgam decomposer Download PDF

Info

Publication number
US2700650A
US2700650A US214453A US21445351A US2700650A US 2700650 A US2700650 A US 2700650A US 214453 A US214453 A US 214453A US 21445351 A US21445351 A US 21445351A US 2700650 A US2700650 A US 2700650A
Authority
US
United States
Prior art keywords
trays
shell
amalgam
alkali metal
openings
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 - Lifetime
Application number
US214453A
Other languages
English (en)
Inventor
Nora Vittorio De
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.)
De Nora SpA
Original Assignee
Oronzio de Nora Impianti Elettrochimici SpA
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 Oronzio de Nora Impianti Elettrochimici SpA filed Critical Oronzio de Nora Impianti Elettrochimici SpA
Application granted granted Critical
Publication of US2700650A publication Critical patent/US2700650A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C25B1/36—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in mercury cathode cells
    • C25B1/42—Decomposition of amalgams

Definitions

  • the first object is to obtain a thorough stratification of the caustic solution, so that the highest concentration may be present at the product caustic outlet and the lowest concentration near the make water inlet, inasmuch as the hydrogen developed by reaction and bubbling upwardly through the openings in the plates is prevented from mixing the caustic layers of different density.
  • the second object accomplished by this device is to increase the cathodic surface and the anodic surface as well.
  • Fig. l is a sectional elevational View of a vertical de composer embodying my invention.
  • Fig. 2 is a sectional elevational View in a scale different from the preceding figure, and according to a particular form of construction, of one element of the cathodic mass which is the object of my present invention.
  • Fig. 3 is a similar view showing a modified form of element.
  • Fig. 4 is a fragmentary top view of the same plate as shown in Fig. 2.
  • Fig. 5 is a similar view of a modified form of plate.
  • Fig. 6 is a detail of Fig. 2 in an enlarged scale.
  • Fig. 7 is a similar view of Fig. 3.
  • the decomposer body consists of a shell 1, whose section is preferably though not necessarily cylindrical. It is provided with the mercury outlet 2 at its bottom and incorporates a pile of cathodic plates 3, in which are worked out the openings 4.
  • the spacers 5 that are arranged between the plates along the rim of these last serve to separate the plates. Furthermore, they must carry out a gasketing function against the shell wall, in order to prevent the caustic and the amalgam stream from being bypassed through any gap between the pile of cathodic plates and the shell.
  • This compartment consists of a pile of plates 7, the material of which is unreactive with water and alkali amalgam, though they may be quite similar in shape to the cathodic plates already described. Plates 7 are mounted in a shell 8 above the decomposition compartment and separated therefrom by means of a mercury closure 8". The free space between plates 7 may be filled up with dumped pieces 7 of nonconductive material.
  • wash Water or steam entering the rinse compartment at its bottom through pipe 10 is forced through the openings of plates 7 and countercurrently to the amalgam fed from inlet 12 above the plates. After washing, the amalgam drops in the decomposition chamber through the mercury closure S whereas wash water or steam are discharged upwards through the outlet 11.
  • the holes in each plate be not on a same vertical line with the holes in the nearby plates, in order to secure a widespread contact of the amalgam both with the cathodic material and the caustic solution.
  • the slots should be staggered or turned with respect to the slots in the nearby plates.
  • the trays of cathodic material may also be made with a set of bars or strips of any shape placed on a same plane and spaced at a convenient distance apart from each other.
  • the amalgam can also be passed upwardly.
  • the openings in the plates, as well as the spacings between the plates be as small as possible.
  • each plate may also be given a slight slope, so as to favor the passage of the amalgam ihllgh the. lowest openings and. of the hydrogen through the highest?. ones, thus. preventing the two ows from disturbing each other.
  • each plate 14 or 15 may geously be. slightly countersunk as 14 and 15 (Fia 6) below the level of the upper surface, in order to provide a Wider Contact.. area. for the chemical reaction to take Place.
  • some of the holes may be made to protrude as 14" and .15l (Fig. 7) abovey the surface 0f th@Brum.. in order to favor the escaping of hydrogen through these holes.
  • each stage may be composed of a set of conductive but non-amalgamatable parts assembled according to the above described invention.
  • the slope may be obtained by giving the trays the conical shape with either the concavity or the convexity facing upwardly'- What l claim is:
  • An apparatus for the decomposition of alkali metal amalgam comprising a shell, means at the upper portion O f the. Shell for introducing alkali metal amalgam into the upper portion of the shell, a plurality of superposed trays of non-amalgarnatable cathodic material superimposed in vertically spaced relation in said shell, each of said trays having a plurality of openings therein, nonamalgamatable, filling material interposed between the trays, means at the lower portion of the shell beneath said trays for introducing an aqueous medium and discharging mercury, and means at the upper part of said shell for discharging alkali metal hydroxide solution formed in the shell, the surfaces of the trays being slightly slopedl and the openings in the lowermost portion of the trays being countersunk below the upper surface of the trays and the openings in the uppermost portion of the trays being surrounded by anges jutting above the upper surface of the tray.
  • An apparatus for the decomposition of alkali metal advantaamalgam comprising a shell, means at the upper portion of the shell for introducing alkali metal amalgam into the upper portion of the shell, a plurality of superposed trays of non-arnalgamatable cathodic material superimposed in vertically spaced relation 1n said shell, each of said trays having a plurality of openings therein, nontrays, mean interposed between the s at the lower portion of the shell beneath said trays for introducing an aqueous medium and discharging mercury, shell for discharging and means at the upper part of said alkali metal hydroxide solution formed in the shell, the surfaces of the trays being slightly sloped and the openings in the lowermost portion of the trays being countersunk below the upper surface of the trays, and the openings.
  • the said opening being in the form of slots and slots in each tray being positioned at an angle relatively to the slots of adjacent trays.
  • An apparatus for the decomposition of alkali metal amalgam comprising a sh e11 means at the upper portion of the shell for introducing alkali metal amalgam into the upper portion of the shell, a series of vertically spaced superposed trays of non-amalgamatable cathodic material in said shell, between the upper and lower portions thereof, providing a series of vertically arranged spaces between the uppermost and lowermost trays, each of said trays having a plurality of openings therein, non amalgamatable illing material interposed in the spaces between the trays, shell beneath said dium and discharging; mercury, part of said shell for discharging means at the lower portion of the trays for introducing an aqueous meand means at the upper alkali metal hydroxide solution formed in the shell, the openings in one trayv being; staggered with respect to the openings in adjacent trays and the ratio of the spacing distance between the trays to the mimmum size of the openings ranging from 1:2 to.2:l.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US214453A 1950-03-13 1951-03-08 Alkali metal amalgam decomposer Expired - Lifetime US2700650A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT295991X 1950-03-13

Publications (1)

Publication Number Publication Date
US2700650A true US2700650A (en) 1955-01-25

Family

ID=11228073

Family Applications (1)

Application Number Title Priority Date Filing Date
US214453A Expired - Lifetime US2700650A (en) 1950-03-13 1951-03-08 Alkali metal amalgam decomposer

Country Status (3)

Country Link
US (1) US2700650A (it)
CH (2) CH295991A (it)
GB (1) GB698204A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170384B (de) * 1958-01-15 1964-05-21 Ici Ltd Alkaliamalgamturmzersetzer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938773A (en) * 1954-03-06 1960-05-31 Zoutindustrie Apparatus for the reduction of solutions by means of a liquid amalgam
NL92956C (it) * 1955-03-24

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189524837A (en) * 1895-12-27 1896-04-11 Peter Jensen Improvement in the Method and Apparatus for Washing Alkali-amalgam Obtained in Electrolytic Apparatus.
US789721A (en) * 1904-02-29 1905-05-16 Decker Mfg Company Electrolytic apparatus.
US2083648A (en) * 1932-02-25 1937-06-15 Ig Farbenindustrie Ag Preparation of alkali metal hydroxide solutions
US2423351A (en) * 1943-02-01 1947-07-01 Mathieson Alkali Works Inc Apparatus for amalgam decomposition
US2551248A (en) * 1944-02-09 1951-05-01 Solvay Apparatus for the decomposition of alkali amalgams
US2598228A (en) * 1945-02-03 1952-05-27 Wyandotte Chemicals Corp Electrolytic apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189524837A (en) * 1895-12-27 1896-04-11 Peter Jensen Improvement in the Method and Apparatus for Washing Alkali-amalgam Obtained in Electrolytic Apparatus.
US789721A (en) * 1904-02-29 1905-05-16 Decker Mfg Company Electrolytic apparatus.
US2083648A (en) * 1932-02-25 1937-06-15 Ig Farbenindustrie Ag Preparation of alkali metal hydroxide solutions
US2423351A (en) * 1943-02-01 1947-07-01 Mathieson Alkali Works Inc Apparatus for amalgam decomposition
US2551248A (en) * 1944-02-09 1951-05-01 Solvay Apparatus for the decomposition of alkali amalgams
US2598228A (en) * 1945-02-03 1952-05-27 Wyandotte Chemicals Corp Electrolytic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170384B (de) * 1958-01-15 1964-05-21 Ici Ltd Alkaliamalgamturmzersetzer

Also Published As

Publication number Publication date
CH291499A (it) 1953-06-30
GB698204A (en) 1953-10-07
CH295991A (it) 1954-01-31

Similar Documents

Publication Publication Date Title
US3598715A (en) Electrolytic cell
US3972794A (en) Electrolytic cell
US4138295A (en) Process and apparatus for downward recycling of the electrolyte in diaphragm cells
US3928165A (en) Electrolytic cell including means for separating chlorine from the chlorine-electrolyte froth formed in the cell
US2700650A (en) Alkali metal amalgam decomposer
US4139449A (en) Electrolytic cell for producing alkali metal hypochlorites
US2232128A (en) Electrolysis of alkaline metal chlorides and apparatus therefor
US3725223A (en) Baffles for dimensionally stable metal anodes and methods of using same
US3930980A (en) Electrolysis cell
US3770611A (en) Multiple tier horizontal diaphragm cells
EP0114336A2 (en) Electrolyte cell for the automatic and intermittent production of chlorine water
US2629688A (en) Electrolytic apparatus for production of magnesium
SU733520A3 (ru) Горизонтальный электролизер с ртутным катодом
CN222517797U (zh) 气液分离器及制氢系统
US3512220A (en) Vertical decomposing device for separating mercury and alkali metal hydroxides
US3308043A (en) Method of discharging amalgam for inclined plane mercury cells
US2749301A (en) Mercury type, caustic, chlorine cell
US3790465A (en) Electrolytic cell including vertical hollow anodes with deflector panels diverging upwardly from each anode
US2551248A (en) Apparatus for the decomposition of alkali amalgams
US4048046A (en) Electrolytic cell design
US1548362A (en) Electrolytic apparatus
US4161438A (en) Electrolysis cell
US2916425A (en) Apparatus for the electrolysis of alkali metal salts and process therefor
US501783A (en) eermite
US3516918A (en) Alkali metal chlorate cell