US1568904A - Process for refining hydrocarbon oils - Google Patents

Description

- must necessarily be removed before the nets are marketable.

Patented 1m.- 5, 1925.

STATE-S PATENT GFFICE.

. JLGQUE G. MORBELL, OF CHIGAGO, ILLINOIS, LASBIGNOR 1'0 UNIVERSAL OIL PRODUCTS OOHPANY,'OI',GEIGAGO, ILLINOIS, A. CORPORATION OF SOUTH DAKOTA.

PROCESS FOR BEFZENING- HYZDBOCABBON Oilfi- Ro Drawing.

To all whom it may concern:

7 Be it known that I, J ACQUE (3. Mosnnnn, a citizen of the United States, residing'in the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Processes for Refining Hydrocarbon Oils, of which the following is a specification.

This invention relates to improvements in a rocess for refining hydrocarbon oils and re ers more particularly to; the refining of cracked distillates .such as those produced under heat and pressure conditions resulting infthe forming of aromatic distillates having objectionable in redients whicdh ro The use of so dium plumbite or asolution of lith'arge in caustic soda is recognized as being old in the ps troleum art. In conjunction with the use of these materials sulphur has been used as a precipitating a cut. The use of sulphur is objectionable ecause sulphur is up re-\ ciably soluble in such oils and has a eleterious efi'ect upon metals and particularly motor parts with which it comes in contact.

It has been found that-with certain types of oils and especiallythose having a content of sulphur compounds that an aqueous solution of sul hur dioxide or sulphur-cue acid will bring a out this precipitation without introducing'the deleterious effect caused bysul hur'.

s a rule, the use of caustic sodacontainting litharge dissolved therein as desulphur- 1z1n agent has been made use of in conv nection with sulphuric acid refiningand other refinin agents. In ordinary practice the use. of lit arge dissolved in caustic soda has followed the use of sulphuric acid, pre- 'carbo'n oils, comprism suluectin ceded it sometimes with water washes intervening. The usual procedure is to treat the oil with sulphuric acid, then water wash after allowing the sludge tosettle and sub- Application filed April 27,

' proposed to re the "carbon oils, comprisin se araiely and indivi uully to t e action was. Berialin. 635,124.

For reasons mentionedpreviousl it is V use or sulplx a solution of sulphur dioxide as a precip toting V gasoline is treated withcthe litharge .and caustic solution The presentinvention is applicable in any case with the aforementionedbenefits.

In ver rare cases the addition of a solution of ydrogen sulphide previous to the application of sulphur dioxidesolution will assist in bringing about precipitationof the lead sulphide and terials. Thus the replacement by the sulphur dioxide of the sulphur serves the purpose of relieving thccq l of such-objectionable ingredients and preci itates which heretofore have been remov tion of sulphur 'and'eliminates the ob'ectionahle featu'reoi havin sulphur whic is appreciably soluble in tlie bining therewith I claim as myinvexitioni J 1. Steps in a process of refi ing hydrocarbon oils, comprising subjecting thevoil separately and indiuiduallyL-to the action of sulphuric acid and-caustic soda containing lithargefand subsequent to 'the sub'ection of the oil to the action of caustic so a con-.

ur by agent. -fin some cases straight by the addif '70 I Oll from Jcomother suspemd mataining litharge, adding sulphur dioxide to assist m-the refininglreaction. I

.2. Steps in a process of refining hydrosubjectin the oil in sulphuric acid and caustic soda containing liiharge, and subsequent to the subjection of the oil te the action of caustic soda containinglithar e, adding sulphurous acid to assist in the re ning reaction.

{3. Steps in a process ofrefining hydrothe oil separately and indivi ually to t e action: of sul huric acid and caustic soda containing lit arge, and subsequent to the subjection of the oil to the action of caustic soda JAcous o. MORRELL.