US861345A - Process of manufacturing lead acetate. - Google Patents

Process of manufacturing lead acetate. Download PDF

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Publication number
US861345A
US861345A US23076804A US1904230768A US861345A US 861345 A US861345 A US 861345A US 23076804 A US23076804 A US 23076804A US 1904230768 A US1904230768 A US 1904230768A US 861345 A US861345 A US 861345A
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lead
acetate
acetic acid
lead acetate
manufacturing lead
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US23076804A
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Adolf Wultze
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part

Definitions

  • My invention relates to a new and useful process of manufacturing lead-acetate.
  • a method of manufacturing lead acetate has become known, according to which acetic acid vapors are brought into contact with metallic lead and in order to insure that the metallic lead offers always a bright surfacel to the acetic acid vapors acting upon the lead for the purpose of forming lead acetate, lead liquor is sprinkled over the metallic lead for Washing down the lead acetate.
  • the subject of my invention now is a process for obtaining lead acetate also from metallic lead but by a continuous process under employment of any quantity of air.
  • the process consists therein, that loosely packed metallic lead either granulated or in wire form is heaped up in a closed receptacle and perfectly dipped into liquid acetic acid and simultaneously air under pressure is introduced.
  • perforated partitions in which perforated partitions are arranged is fed with reduced pieces of lead or granulated lead.z
  • the receptacle is then filled with diluted acetic acid and then closed, so as to withstand the pressure exerted.
  • the pressure air is then introduced by means of a pump exerting a pressure of about 4 atmospheres.
  • the whole reaction mass then heats itself to about the warmth of a hand and the acetic acid reacts with the oxid of lead.
  • the salt is pressed out of the pressure receptacle and new acetic acid is introduced, and so on.
  • the apparatus employed is a monte-jus which is laid out with acid-proof materials.
  • a is a receptacle
  • b are perforated plates arranged within the same, upon which the lead is loosely packed.
  • d is a cover
  • c is a rubber tube lor introducing the air
  • e is a further tube for pressing out oi the receptacle the solution of salt
  • f is a manometer and g a valve for allowing the vinegar vapors mixed with air and pressed out of the receptacle by the excess of pressure, to enter the tube e through which these vapors are led 0H to aplace, where they can be used for other purposes.
  • the process for manufacturing acetate of 4lead in a closed apparatus has the advantage that the quantity of air necessary can be introduced at will whereas in the methods hitherto used in which lead piled up was exposed to the action of vinegar only that quantity of air contained in the heaps of lead, was at disposal for the reaction. r.
  • My process has the further advantage that the solutions ol salt arising can be conveniently managed. 'lphe solutions of salts which are for instance pressed out of the monte-jus can in my process at once be led over to a further monte-jus and can be treated thereinwith carbonio acid, so as to give white lead.
  • a further advantage consists therein that no acetic acid can be lost by evaporation.
  • Process for manufacturing lead-acetate consisting in feeding a vessel with finely divided lead, filling completely the vessel with acetic acid, closing the vessel and forcing air into the vessel up to a certain overpressure whereby the converting of the acetic acid into lead-acetateV takes lace.
  • Process for manufacturing lead-acetate consisting 1n feeding a vessel with finely divided lead, filling completely the vessel'with lacetic acid, closing the vessel and forcing air into the vessel up to an overpressure of about 4 atmospheres, whereby the ⁇ converting of the acetic acid into leadacetate takes place.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fertilizers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

No. 861,345. PATBNTED JULY 30, 1907. A. WULTZE. PROCESS OF MANUFACTURING LEAD AGETATE.
APPLICATION FILED 00T.31, 1904.
ADOLF-WULTZE, OF CHARLOTTENBURG, GERMANY.
PROCESS OF MANUFACTURING LEAD ACETATE.
Specification of Letters Patent.
Patented July 30, 1907.
Application iiled October 31, 1904. Serial No. 230,768.
new and useful Process of Manufacturing Lead Acetate,
of which the following is an exact specification.
My invention relates to a new and useful process of manufacturing lead-acetate.
In the processes hitherto known lead acetate was obtained either by dissolving litharge in acetic acid and crystallizing the solution, or the lead reduced to pieces was piled up, moistened by vinegar and then left to the action of air. The acetic lye obtained in this latter manner was then also crystallized.
A method of manufacturing lead acetate has become known, according to which acetic acid vapors are brought into contact with metallic lead and in order to insure that the metallic lead offers always a bright surfacel to the acetic acid vapors acting upon the lead for the purpose of forming lead acetate, lead liquor is sprinkled over the metallic lead for Washing down the lead acetate.
The subject of my invention now is a process for obtaining lead acetate also from metallic lead but by a continuous process under employment of any quantity of air. The process consists therein, that loosely packed metallic lead either granulated or in wire form is heaped up in a closed receptacle and perfectly dipped into liquid acetic acid and simultaneously air under pressure is introduced.
The process is as follows: A receptacle of about 8 cb'.m.
in which perforated partitions are arranged is fed with reduced pieces of lead or granulated lead.z The receptacle is then filled with diluted acetic acid and then closed, so as to withstand the pressure exerted. The pressure air is then introduced by means of a pump exerting a pressure of about 4 atmospheres. The whole reaction mass then heats itself to about the warmth of a hand and the acetic acid reacts with the oxid of lead. After the reaction is finished, the salt is pressed out of the pressure receptacle and new acetic acid is introduced, and so on. By this process the manufacture of acetate of lead in large quantities is realized: for example I bring in the receptacle at one time a charge of 25000 kilograms of lead and 7000 liter of acetic acid, and 3800 kilograms of acetate of lead are produced after the short time of 2 hours and 40 minutes.
It is of course easy to obtain at will neutral or basic lead acetate.. The apparatus employed is a monte-jus which is laid out with acid-proof materials.
In. order to make my invention more clear, I refer to the accompanying drawing, which shows a convenient form of an apparatus for practicing my new process.
a is a receptacle, b are perforated plates arranged within the same, upon which the lead is loosely packed.
d is a cover, c is a rubber tube lor introducing the air, e is a further tube for pressing out oi the receptacle the solution of salt, f is a manometer and g a valve for allowing the vinegar vapors mixed with air and pressed out of the receptacle by the excess of pressure, to enter the tube e through which these vapors are led 0H to aplace, where they can be used for other purposes.
The process for manufacturing acetate of 4lead in a closed apparatus has the advantage that the quantity of air necessary can be introduced at will whereas in the methods hitherto used in which lead piled up was exposed to the action of vinegar only that quantity of air contained in the heaps of lead, was at disposal for the reaction. r.
My process has the further advantage that the solutions ol salt arising can be conveniently managed. 'lphe solutions of salts which are for instance pressed out of the monte-jus can in my process at once be led over to a further monte-jus and can be treated thereinwith carbonio acid, so as to give white lead. A further advantage consists therein that no acetic acid can be lost by evaporation.
Having thus fully described the nature of my invention, what I desire to secure by Letters Patent of the United States is 1. Process for manufacturing lead-acetate consisting in feeding a vessel with finely divided lead, filling completely the vessel with acetic acid, closing the vessel and forcing air into the vessel up to a certain overpressure whereby the converting of the acetic acid into lead-acetateV takes lace. p 2. Process for manufacturing lead-acetate consisting 1n feeding a vessel with finely divided lead, filling completely the vessel'with lacetic acid, closing the vessel and forcing air into the vessel up to an overpressure of about 4 atmospheres, whereby the `converting of the acetic acid into leadacetate takes place.
In witness whereof l have hereunto set my hand in the presence of two witnesses.
ADOLF WULTZE.
Witnesses HENRY HAsPnn, WOLDEMAB HAUPT.
US23076804A 1904-10-31 1904-10-31 Process of manufacturing lead acetate. Expired - Lifetime US861345A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416074A (en) * 1943-09-21 1947-02-18 Du Pont Preparation of heavy metal soaps
US2452003A (en) * 1945-11-30 1948-10-19 Du Pont Preparation of zinc propionate
US2959605A (en) * 1958-03-24 1960-11-08 Nat Lead Co Preparation of metal salts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416074A (en) * 1943-09-21 1947-02-18 Du Pont Preparation of heavy metal soaps
US2452003A (en) * 1945-11-30 1948-10-19 Du Pont Preparation of zinc propionate
US2959605A (en) * 1958-03-24 1960-11-08 Nat Lead Co Preparation of metal salts

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