Class / Patent application number | Description | Number of patent applications / Date published |
203091000 | VAPORIZATION ZONE UNDER POSITIVE PRESSURE OR VACUUM | 10 |
20080230370 | Vacuum distillation method and vacuum distillation apparatus - An objective of the present invention is to suppress bumping in the distillation still so as to collect a high purity solvent containing no impurities. A solvent vapor valve | 09-25-2008 |
20090000940 | Method and Apparatus for Oil and/or Oil Product Treatment - A method of oil and/or oil product treatment is carried out by producing a physico-mechanical effect on a moving flow of oil and/or oil products by changing pressure along the flow, wherein the pressure of at least 0.35 MPa being created at the flow inlet, which is subsequently reduced to a value not in excess of 0.05 MPa to provide the formation of the vapor-liquid mixture, followed by pressure increase at the flow outlet to at least 0.1 MPa. The unit for producing effect on the moving flow by pressure drops comprises an inlet piping with a multi-nozzle block hermetically fixed in its cross-section connected to a cylindrical channel and an expanding diffusor having a half-angle not in excess of 4 degrees. The ratio of the cylindrical channel cross-section area to the sum of nozzle hole area at the outlet from the multi-nozzle block ranges from 2.1 to 5.9. | 01-01-2009 |
20090078558 | NOVEL METHOD FOR PRODUCING (METH)ACRYLIC ACID AND (METH)ACRYLIC ESTERS - There is provided a method for rectifying a vinyl compound liquor, comprising the steps of: a) providing a rectification column operated at a temperature and pressure; b) feeding the vinyl compound liquor to be rectified into the rectification column; characterized in that the pressure of said rectification column and the temperature of said fed vinyl compound liquor are controlled such that the temperature of said fed vinyl compound liquor is in the range of from its bubble point at the pressure of said rectification column to 10° C. lower than said bubble point. | 03-26-2009 |
20110266135 | SULFUR DEGASSING PROCESS - A process is disclosed for removing hydrogen sulfide from liquid sulfur including: passing a liquid sulfur feed comprising liquid sulfur and hydrogen sulfide to a vaporizer; vaporizing at least a portion of the liquid sulfur feed in the vaporizer to thereby form a first vapor stream comprising gaseous sulfur and gaseous hydrogen sulfide; partially condensing the first vapor stream in a condenser to form a liquid product stream comprising liquid sulfur and a second vapor stream comprising hydrogen sulfide; wherein the liquid product stream has a lower concentration of hydrogen sulfide than the liquid sulfur feed. | 11-03-2011 |
20110308932 | Feed section of a separation column - The present invention relates to a feed distribution device in separation columns and a method of operation. In particular it relates to distillation columns in which the feed stream is substantially liquid phase, or a mixture of gas and liquid upstream of the column, but where the feed vaporizes or vaporizes more when it enters the column. More specifically, the feed distribution device contains a plurality of opening which allow the feed to vaporize inside the column and where the openings are maintained in critical condition during operation. Significant advantage is achieved through the implementation and use of the present feed distribution device. | 12-22-2011 |
20150329516 | DEVICE AND METHOD FOR SEPARATING A CYCLIC DIESTER FROM POLYMER MELTS - The present invention relates to a device and also to a method for separating and recovering a cyclic diester, in particular dilactide or glycolide from polymer melts which include the cyclic diester as impurity. The device and also the method according to the invention allow recovery of the cyclic diester with a high yield and at the same time high purity. | 11-19-2015 |
20150352462 | Hybrid Contact Tray for a Mass Transfer Column - A hybrid contact tray for a mass transfer column is provided. The contact tray includes a tray deck for passage of liquid along a liquid flow path thereon. The tray deck has a plurality of orifices for passage of ascending vapor through the tray deck, a cross-current vapor-liquid mixing section having a first portion of the plurality of orifices, and a co-current vapor-liquid mixing section comprising at least one co-current mixing device associated with a second portion of the plurality of orifices. The tray deck also has means for altering liquid head levels with respect to the plurality of orifices such that the liquid head level within the co-current vapor-liquid mixing section is greater than the liquid head level within the cross-current vapor-liquid mixing section. | 12-10-2015 |
203092000 | Including the addition of water or steam | 2 |
20100163401 | SULFUR DEGASSING PROCESS - A process is disclosed for removing hydrogen sulfide from liquid sulfur including: passing a liquid sulfur feed comprising liquid sulfur and hydrogen sulfide to a vaporizer; vaporizing at least a portion of the liquid sulfur feed in the vaporizer to thereby form a first vapor stream comprising gaseous sulfur and gaseous hydrogen sulfide; partially condensing the first vapor stream in a condenser to form a liquid product stream comprising liquid sulfur and a second vapor stream comprising hydrogen sulfide; wherein the liquid product stream has a lower concentration of hydrogen sulfide than the liquid sulfur feed. | 07-01-2010 |
20120247944 | MULTI-LAYER STEAM GRID FOR HEAT AND MASS TRANSFER IN A TAILINGS SOLVENT RECOVERY UNIT - A grid of pipes for conducting steam at a pressure greater than a vessels' operating pressure and delivering the steam throughout the grid forms the internals for a tailings solvent recovery unit. The delivery of steam throughout the grid aids in maintaining a relatively low partial pressure throughout the vessel to act as a driver for mass transfer. Conducting the steam at the higher pressure through the pipes in the grid permits a surface of the pipes to be heated to a temperature higher than possible in a conventional vessel, increasing the heat transfer to the feed stream which flows through the grid. | 10-04-2012 |
203094000 | And returning product of distillation step to distillation zone | 1 |
20090020407 | METHOD FOR PRODUCING PURE XYLYLENEDIAMINE (XDA) - A process comprising: continuously distilling a crude xylylenediamine in a column to form a pure xylylenediamine and a bottom product, wherein the column comprises a distillation column having a side draw and the distillation column is operated under a reduced pressure and a bottom temperature of 185° C. or less; drawing off the pure xylylenediamine from the side draw; evaporatively concentrating the bottom product of the distillation column in an additional evaporation stage to form a condensate; and returning the condensate into the distillation column | 01-22-2009 |