US1793146A - Pickling metals - Google Patents

Pickling metals Download PDF

Info

Publication number
US1793146A
US1793146A US247746A US24774628A US1793146A US 1793146 A US1793146 A US 1793146A US 247746 A US247746 A US 247746A US 24774628 A US24774628 A US 24774628A US 1793146 A US1793146 A US 1793146A
Authority
US
United States
Prior art keywords
acid
sulfuric acid
soluble
sludge
pickling
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
US247746A
Inventor
Voorhees Vanderveer
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.)
Standard Oil Co
Original Assignee
Standard Oil Co
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 Standard Oil Co filed Critical Standard Oil Co
Priority to US247746A priority Critical patent/US1793146A/en
Application granted granted Critical
Publication of US1793146A publication Critical patent/US1793146A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors

Definitions

  • PdtentJFbfii 1531 UNITED STATES VANDERVIJER VOORHEES, OF WRITING,
  • This invention relates to the acid pickling of metals, and particularly to the reduction of hydrogen evolution and loss of metals therein. 5
  • hydrogen evolution and excessive attack of the metal are substantially reduced or prevented in the cleaning of metals, particularly ferrous metals, by pickling in an acid bath consisting wholly or in part of acid derived iromacid sludgeffom'the'sifliiific acid treatment of a ti'oleumpilwhich-has been subjected to cracking temperatures.
  • acid derivedfrom sludge resulting from the tmatment with sulfuric acid of oils cracked under pressure at temeratures which are usually in excess of 700 Serial No. 247,746.
  • the deodorized strong acid is relatively inactive towards ferrous metals and may suitably be transported in steel tank cars to the places where it is to be diluted and used in pickling.
  • the invention is not limited to the use of an acid derived 7n pressures above 4 atmospheres, with sulfuric from a sludge frompressure distillate, since agid of about 66 Baum although other acid strengths may 53 employed if desired. While the restraining effect with regard to metal attack is possessed by the pressure distillate sludge, to a high degree, a preliminary treatment is necessary in order to avoid several objections which arise in actual practice.
  • the pickling bath may be of any suitable concentration and may be used at any suitable temperature. Ordinarily the initial concentration used is between 5 and 10% of sulfuric acid although higher concentration may used? Corrosion ss (mgml. per square inch) Proportion of acids 100% pure acid 75% pure arid 25% sludge acid 85% pure acid 15% sludge acid 95% pure acid 5% sludge acid This application is a continuation of my prior application Serial No. 121,279, filed July 8, 1926.
  • the method of acid pickling metals which comprises subjecting the metal to the action of a pickling bath containing acid and incorporating in said bath organic substances recovered from sludge derived from a cracked petroleum distillate soluble in dilute sulfur1c acid, said or anic substances being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • the method of acid pickling metals which comprises subjecting the metal to the action of an acid pickling bath and incorporating in said bath organic substances derived from the sludge from acid treatment of a pressure cracked distillate and soluble in dilute sulfuric acid, said organic substances being free from sludge substances soluble in strong sulfuric acid, and not soluble in dilute sulfuric acid.
  • the method of acid pickling metals which comprises subjecting the metal to the action of an acid pickling bath and incorporating in said bath a material recovered from petroleum acid sludge containing organic substances therefrom soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • the method of acid pickling metals which comprises subjectin the metal to the action of an acid pickling ath and incorporating therein a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid and free from sludge substances soluble in strong sulfuric acid and not soluble in'dilute sulfuric acid, the acid of such material constituting from 5 to 25% of the total acid in the bath.
  • the method of preparing a bath for pickling metals which comprises diluting acid sludge derived from a cracked petroleum oil with water, heating to cause separation of asphaltic matter and incorporating the acid and accompanying organic substances soluble therein in a metal pickling bath.
  • a solution for pickling iron or steel articles comprising water and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • a solution for pickling iron or steel articles comprising commercial sulfuric acid, water and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfurc acid and not soluble in dilute sulfuric ac1 10.
  • a solution for pickling iron or steel articles containing as an ingredient a material recovered from petroleum acid sludge consisting of sulfuric acid and such organlc substances as are soluble in dilute sulfuric acid, and free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • a solution for pickling iron or steel articles containing as ingredients commercial sulfuric acid and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, and free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • a solution for pickling iron and steel articles containing as ingredients commercial sulfuric acid and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid and free from sludge substancessoluble in strong sulfuric acid and not soluble in dilute sulfuric acid,
  • the proportion of said material being such that the acid content thereof constitutes not less than 5% of the total acid of the bath.
  • a solution for pickling1 iron and steel articles comprising water an a material recovered from acid sludge from the treatment of cracked petroleum distillate and consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuricjcid and insoluble in dilute sulfuric acid.
  • a solution for pickling iron or steel articles comprising commercial sulfuric acid. water and a material recovered from acid sludge from the treatment of cracked petroleum distillate and comprisin organic substances therefrom soluble in ilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
  • a solution for pickling iron or steel articles comprising sulfuric acid, water and a material recovered from etroleum acid sludge and containing suc organic substances thereof as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Description

PdtentJFbfii", 1531 UNITED STATES VANDERVIJER VOORHEES, OF WRITING,
txamme PATENT OFFICE INDIANA, ASSIGNOB TO STANDARD OIL COMPANY, OF WHITING, INDIANA, A CORPORATION OF INDIANA PICKLING METALS Io Drawing. Continuation of application Serial No. 121,279, filed July 8, 1926. This application filed January 18, 1928.
This invention relates to the acid pickling of metals, and particularly to the reduction of hydrogen evolution and loss of metals therein. 5 According to the present invention hydrogen evolution and excessive attack of the metal are substantially reduced or prevented in the cleaning of metals, particularly ferrous metals, by pickling in an acid bath consisting wholly or in part of acid derived iromacid sludgeffom'the'sifliiific acid treatment of a ti'oleumpilwhich-has been subjected to cracking temperatures. It is preferred to employ acid derivedfrom sludge resulting from the tmatment with sulfuric acid of oils cracked under pressure at temeratures which are usually in excess of 700 Serial No. 247,746.
to about to H SO and further a tgamed This treatment efl'ectively drives dors. The resulting aci 1s a clear, brownish red liquid which may be diluted directly to a concentration suitable for the picklin operation ornnafi he adm1xed with other sicid and diluted. 0 tarry mata iggn sludges derived irom distilmdilution and its odor late .procncts siid h as cracked gasoline and kero e are referred. As a specific examp e 1 may e stated that good results are obtained with acid recovered from sludge resulting from the treatment of pressure distillate, produced, for example, by the Burton process at temperatures of 720-7 60 F. and
is greatly improved.- The deodorized strong acid is relatively inactive towards ferrous metals and may suitably be transported in steel tank cars to the places where it is to be diluted and used in pickling.
It must be understood that the invention is not limited to the use of an acid derived 7n pressures above 4 atmospheres, with sulfuric from a sludge frompressure distillate, since agid of about 66 Baum although other acid strengths may 53 employed if desired. While the restraining effect with regard to metal attack is possessed by the pressure distillate sludge, to a high degree, a preliminary treatment is necessary in order to avoid several objections which arise in actual practice. For example, if such sludge is diluted to the extent necessary to produce a pickling bath of normal acid content there would be a tend ency for asphaltic matters to precipitate upon the metal under treatment, thereby preventing efi'ective pickling and causing imerfections in the finished metal when subected to tinning or other subsequent operations. Another objection is that the sludge possesses a nauseating odor when raised to pickling temperature. Both these disadvantages can be substantially completely overgood results may be obtained with acid from sludges derived from other distillates and residues from the various known cracking processes.
According to the invention, the pickling bath may be of any suitable concentration and may be used at any suitable temperature. Ordinarily the initial concentration used is between 5 and 10% of sulfuric acid although higher concentration may used? Corrosion ss (mgml. per square inch) Proportion of acids 100% pure acid 75% pure arid 25% sludge acid 85% pure acid 15% sludge acid 95% pure acid 5% sludge acid This application is a continuation of my prior application Serial No. 121,279, filed July 8, 1926.
I claim:
1. The method of acid pickling metals which comprises subjecting the metal to the action of a pickling bath containing acid and incorporating in said bath organic substances recovered from sludge derived from a cracked petroleum distillate soluble in dilute sulfur1c acid, said or anic substances being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
2. The method of acid pickling metals which comprises subjecting the metal to the action of an acid pickling bath and incorporating in said bath organic substances derived from the sludge from acid treatment of a pressure cracked distillate and soluble in dilute sulfuric acid, said organic substances being free from sludge substances soluble in strong sulfuric acid, and not soluble in dilute sulfuric acid.
3. The method of acid pickling metals which comprises subjecting the metal to the action of an acid pickling bath and incorporating in said bath a material recovered from petroleum acid sludge containing organic substances therefrom soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
4. The method of acid pickling metals which comprises subjecting the metal to the action of an acid pickling bath and incorporating in said bath a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances thereof as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
5. The method of acid pickling metals which comprises subjectin the metal to the action of an acid pickling ath and incorporating therein a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid and free from sludge substances soluble in strong sulfuric acid and not soluble in'dilute sulfuric acid, the acid of such material constituting from 5 to 25% of the total acid in the bath.
6. The method of preparing a bath for pickling metals which comprises diluting acid sludge derived from a cracked petroleum oil with water, heating to cause separation of asphaltic matter and incorporating the acid and accompanying organic substances soluble therein in a metal pickling bath.
7. The method of producing a metal pickling bath which consists in diluting sludge from the sulfuric acid treatment of cracked distillate with water, heating to cause separation of asphaltic material and expel odors, removing the asphaltic material and einbodv- 'ing the acid and accompanying organic substances soluble therein in a suitable stren h.
8. A solution for pickling iron or steel articles, comprising water and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
9. A solution for pickling iron or steel articles, comprising commercial sulfuric acid, water and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfurc acid and not soluble in dilute sulfuric ac1 10. A solution for pickling iron or steel articles containing as an ingredient a material recovered from petroleum acid sludge consisting of sulfuric acid and such organlc substances as are soluble in dilute sulfuric acid, and free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
11. A solution for pickling iron or steel articles containing as ingredients commercial sulfuric acid and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, and free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
12. A solution for pickling iron and steel articles containing as ingredients commercial sulfuric acid and a material recovered from petroleum acid sludge consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid and free from sludge substancessoluble in strong sulfuric acid and not soluble in dilute sulfuric acid,
pickling bath of 252. COMPOSITIONS,
the proportion of said material being such that the acid content thereof constitutes not less than 5% of the total acid of the bath.
13. A solution for pickling1 iron and steel articles comprising water an a material recovered from acid sludge from the treatment of cracked petroleum distillate and consisting of sulfuric acid and such organic substances as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuricjcid and insoluble in dilute sulfuric acid.
14. A solution for pickling iron or steel articles comprising commercial sulfuric acid. water and a material recovered from acid sludge from the treatment of cracked petroleum distillate and comprisin organic substances therefrom soluble in ilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
15. A solution for pickling iron or steel articles comprising sulfuric acid, water and a material recovered from etroleum acid sludge and containing suc organic substances thereof as are soluble in dilute sulfuric acid, said material being free from sludge substances soluble in strong sulfuric acid and not soluble in dilute sulfuric acid.
In testimony whereof I have hereunto set my hand this 4th day of January, 1928.
VANDERVEER VOORHEES.
US247746A 1928-01-18 1928-01-18 Pickling metals Expired - Lifetime US1793146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US247746A US1793146A (en) 1928-01-18 1928-01-18 Pickling metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US247746A US1793146A (en) 1928-01-18 1928-01-18 Pickling metals

Publications (1)

Publication Number Publication Date
US1793146A true US1793146A (en) 1931-02-17

Family

ID=22936198

Family Applications (1)

Application Number Title Priority Date Filing Date
US247746A Expired - Lifetime US1793146A (en) 1928-01-18 1928-01-18 Pickling metals

Country Status (1)

Country Link
US (1) US1793146A (en)

Similar Documents

Publication Publication Date Title
DE1142488B (en) Aqueous acid solution for removing encrustations containing copper and iron oxides on the surfaces of iron objects
US1869781A (en) Process of treating oils
US2602807A (en) Recovery of catalyst from hydrogenated oil
US1793146A (en) Pickling metals
US2152406A (en) Methods of pickling metals
US2009710A (en) Method of removing ash-forming components from crude petroleum oil
US2383800A (en) Metal cleaning composition and process
US1838338A (en) Process and bath for pickling metals
US1941251A (en) Treatment of hydrocarbon oils
US2739103A (en) Method of treating gasoline with citric acid to remove copper
DE944513C (en) Metals hardly corroding, light hydrocarbon oil treated with hypochlorite
US2837484A (en) Method for removing carbonaceous deposits from aluminum molds
DE522922C (en) Pickling solutions for metals
US1950735A (en) Process for desulphurizing hydrocarbon oils
US2005605A (en) Process and bath for pickling metals
US2042412A (en) Process for the preparation of inhibitors
US2027648A (en) Refining of petroleum oil
US1950739A (en) Refining treatment of hydrocarbon oils
US3243446A (en) Process of treating spent rolling oil solution with spent pickling solution
DE570876C (en) Process for the desulphurisation of earth and tea oils
US2303970A (en) Method for desulphurizing mineral oils
US1784215A (en) Method of treating petroleum oils containing sulphur
US1865001A (en) Treatment of hydrocarbon residues containing inorganic substances and product obtained thereby
DE471053C (en) Process for surface refinement of objects made of aluminum and aluminum alloys
US1569871A (en) Process for refining hydrocarbon oil