|Publication number||US1124606 A|
|Publication date||Jan 12, 1915|
|Filing date||Mar 20, 1913|
|Priority date||Mar 20, 1913|
|Publication number||US 1124606 A, US 1124606A, US-A-1124606, US1124606 A, US1124606A|
|Inventors||Joshua G Gardner|
|Original Assignee||Southern Rosin Turpentine Company|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (1), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
terial or residuum that may collect on the bottom 18 through the pipe 19 to any distance from the still that may be desired, and by this means the combustible or inflammable substances will'be prevented from remaining in the still, with material advantages from a commercial standpoint in complying with the requirements of insurance laws and rules. v
To prepare the apparatus for carrying out the process the cage or carrier 14 is charged or filled witlflsawdust and inserted in the body 5 of the still. The cap 7 is then closed and secured and the valves 23 and 25 respectively of pipes 22 and 24 are closed and the valve 20 of the outlet pipe 19 opened. The valve 11 of the steam-inlet pipe 10 is then opened and a charge of steam is admitted above the top of the cage or carrier 14 and forced downwardly through the contents or sawdust in the latter to drive all air down- Wardly toward the bottom of the still and out through the pipe 19. This preliminary step of driving-out the air from the material treated is very important as it encourages a thorough elimination or extraction of the products of the sawdust and the valve 20 of I pipe 19 remains in open condition until the thermometer 21 registers 212 and steam issues from the pipe 19. The valve 20 is then instantly closed as well as the valve 11 of pipe 10 and the valve 23 of pipe 22 is opened, thereby causing the turpentine laden vapor to rise and pass out through the said pipe 22 to the condenser 22. It will be understood that the. steam permeates the mass of sawdust and aconsiderable volume' of steam, relatively to the capacity of the still or. retort, is admitted to the still, and at first the lower temperature of the still when the steam .is admitted thereto will correspondingly reduce the temperature of the steam and the degree of temperatureindicated by the flow at the pipe 19 may for some littletime be below 212, and the steam is permitted to pass out of the pipe 19 until the retort .or still becomes fully heated to 212, for instance, and when such temperature shows at the outlet pipe 19 the volume of steam within the still or retort will be quite large. It is obvious that the greater pressure of the steam will be in the'top of the retort nearest the inlet point therefor, and hence the steam is'driven downwardly through the mass of sawdust and as soon as the temperature of 212 is indicated at the outlet pipe 19 the operator will know that the elimination of. turpentine from the sawdust be immediately efiected and the valves 11 and 20 will 50 be promptly closed and the valve 23 of pipe 22 will immediately opened sothat the steam within the still may be allowed to escape only by flowing upwardly around the basket or carrier containing the sawdust, s1 and as the steam rises the pressure greater toward the topof the still than at the bottom and the heavier substance el minated will be promptly gravitated to the bottom of the still; whereas thelighter turpentine vapors of a pure character will escape through the pipe 22 and valve 23 without carrying therewith any deleterious mat- .ter. This operation is materially distinguished from the treatment of large pieces .of turpentine bearing wood to which a greater heat must be applied and with which solvents must be used in order to extract the turpentine and resinous substances and oils.
It is proposed by this process to take out of the sawdust what turpentine may be therein with material advantage in the output of such industry. The space between the cage or carrier 14 is considerably greater in capacity than the outlet pipe 22 and the vapors 'risin in said space will be held in suspense sufliciently long to cause the heavler portions of the vapors to condense and descend to the bottom of the still body and escape .through the pipe 19 as may be ,desired. In
view of the seal or tight joint-between the rim 13 of the cage or carrier and the annular ledge 12, the vapors remaining suspended in the space between the body of the still and the cage will be prevented from passing through the joint thus formed and be caused to escape solely through the pipe 22. The steam admitted to the top of the still, as hereinbefore explained, by its pressure is caused to pass fully down through the and condensation within the still resultsin a refinement of the lighter portion of the vapors or the turpentine and a separation of the rosin oil from the turpentine is positively condenser 22' and pass through the latter, the resultant condensation is pure turpen 'efi'ected' so that when these vapors enter the tine which is ready for the market or com-' mercial use without being subjected to further treatment to refine the same. After the chargeinthe cage lhasbeen treated asjust explained, the cage is removed from the still and the charge released therefrom and replaced by a new or untreated charge of saw 105 charge in the cage, first forcing the air out i dust or other material and reinserted in the still when the same process may be carried on. At proper intervals or when found necessary the valves 11 and 23 in pipes and. 5. 22 respectively will be closed, and the valves 20 and 25 of pipes 19 and 24 -respectively will be opened to admit steam under pressure into the space between the cage 14 and thebody of the still and against the bottom 10 18 of the latter to blow any sediment or residuum remaining in the still out through the pipe 19 to clean out the still and keep the latter in safe condition and in full compliance with the most technical requirements 4 of lnsurance companies relative to manufac- 20 steam'supply is convenient and in view of the economy in the production of refinedturpentine or the dual steps of distillation and refinement within the still and Without requiring subsequent treatment of the turpentine after it passes ofi from the condenser, the cost of manufacture of turpentine is materially reduced, and it is obvious that the process may be carried on with advantage in connection with saw mills to $0 treat the sawdust as produced and without deteriorating the sawdust as a practical fuel. The process may be carried on very close to a mill and as no attention is necessary relative to the subsequent refinement of the turpentine product issuing from the condenser, the still or retort may be easily controlled andethe process practically carried out with a minimized number of attendants in contradistinction to that class of stills wherein turpentine processes are practised requiring observation and separation of dirt and other products from the turpentine or condensed vapors issuing from the condenser. The use of steam as the eliminating medium without resorting to the application of any other solvent is also important from a standpoint of. economy, especially in view of the fact that one steaming or the admission of a predeterminedcharge of steam to the still or retort efi'ects the distillation. of
the products from the raw material and also a simultaneous refinement of the turpentine so that the condensed vapors issuing from vthe condenser may be immediately used without further refinement.
What is claimed is:
1. A process of simultaneously distilling and refining turpentine, consisting in disposing a charge of comminutedterpene bearing material in a retort, injecting a charge of steam through the material to drive out the air therefrom to the exterior of the retort and also to heat the latter and the mass to a turpentine separating degree and preventing the escape of any of the turpentine bearing vapors through the preliminary air escape means and after the retort and the material have reached a temperature at which the turpentine will separate from the material and thereby causing the heavier substances to separate and gravitate from the turpentine bearing vapors while the latter are rising in the retort, and finally permitting the turpentine bearing vapors to escape from the retort and be condensed to produce pure turpentine.
2. The process of simultaneously distih ling and refining turpentine, consisting in disposing a charge of comminuted turpentine bearing material in a retort having a closable air vent and steam outlet, injecting a charge of steam downwardly through the 'material to drive out the air and also. to
heat the charge of comnn'nuted turpentine bearing material to a degree of turpentine extraction, closing the air outlet and cutting off the injection of steam from the retort when the mass treated and the retort have reached a degree of heat necessary to separate the turpentine from the turpentine bearing material, and finally permitting all of the vapors within the retort to rise in the latter and the heavier portions of the vapors to condense and gravitate by coming in contact with the outer cooler portion of the retort and permitting the lighter pure turpentine vapors to escape from the retort andbe condensed to produce refined turpentine. Intestimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
JOSHUA G. GARDNER. Witnesses:
CHAS. S. HYER, (has. A. Rown,
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6884325 *||Apr 7, 2000||Apr 26, 2005||Ihs Solvent Solutions, Inc.||Sealable lid for vacuum distillation apparatus|
|U.S. Classification||585/801, 585/947, 202/242, 202/185.5, 202/266, 202/269|
|Cooperative Classification||C07C2103/24, Y10S585/947|