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Class Information
Number: 203/91
Name: Distillation: processes, separatory > Vaporization zone under positive pressure or vacuum
Description: Processes in which distillation is carried out under a pressure greater than atmospheric or under a vacuum.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619098 |
Method for producing phthalic anhydride that conforms to specifications |
Nov. 17, 2009 |
| 7615137 |
Process for recovering caprolactam from aqueous caprolactam product using in situ prepared alkali amino caproate |
Nov. 10, 2009 |
| 7592468 |
Production of .DELTA. 9 tetrahydrocannabinol |
Sep. 22, 2009 |
| 7563360 |
Mercury-removal process in distillation tower |
Jul. 21, 2009 |
| 7553396 |
Pressure desalination |
Jun. 30, 2009 |
| 7540944 |
Saline/sewage water reclamation system |
Jun. 2, 2009 |
| 7473338 |
Distillation apparatus for readily polymerizable compound |
Jan. 6, 2009 |
| 7442348 |
Sulfur-bearing residue treatment system |
Oct. 28, 2008 |
| 7429312 |
Method for processing multi-component liquid mixtures and device for carrying out said method |
Sep. 30, 2008 |
| 7390380 |
Processing of shipboard wastewater |
Jun. 24, 2008 |
| 7326323 |
High capacity purification of thermally unstable compounds |
Feb. 5, 2008 |
| 7306705 |
Method for dehydrating composition comprising lithium bis(pentafluoroethanesulfonyl)imide |
Dec. 11, 2007 |
| 7279076 |
Apparatus and method for handling easily polymerizable substance, apparatus for extracting liquid from apparatus under reduced pressure, and process for producing easily polymerizable substanc |
Oct. 9, 2007 |
| 7267747 |
Plant and method for vacuum distillation of hydrocarbon liquids |
Sep. 11, 2007 |
| 7232505 |
Method of regenerating an aqueous glycol solution containing salts |
Jun. 19, 2007 |
| 7230126 |
Method for obtaining optically active epoxide |
Jun. 12, 2007 |
| 7128815 |
Process for recovery of pure acrylonitrile |
Oct. 31, 2006 |
| 7089762 |
Multi-stage vacuum distilling, cooling and freezing processes and apparatuses for solution separation and seawater desalination |
Aug. 15, 2006 |
| 7048835 |
System and method for acetic acid recovery during terephthalic acid production |
May. 23, 2006 |
| 7029556 |
Method for purifying (meth)acrylic monomers by distillation |
Apr. 18, 2006 |
| 7008516 |
Method and apparatus for desalinating and concentrating sea water, desalinated deep water and concentrated deep water |
Mar. 7, 2006 |
| 6984293 |
Azeotropic distillation of cyclic esters of hydroxy organic acids |
Jan. 10, 2006 |
| 6932889 |
Water treatment device and method |
Aug. 23, 2005 |
| 6878239 |
Process for inhibiting a polymerization in a vacuum section of an easily polymerizable compound purification system |
Apr. 12, 2005 |
| 6863779 |
Distillation of styrene |
Mar. 8, 2005 |
| 6852199 |
Method for separating pentenenitrile isomers |
Feb. 8, 2005 |
| 6849772 |
Process for producing and purifying 1,1-difluoroethane, and product thus obtained |
Feb. 1, 2005 |
| 6761802 |
Tunnel for distillation of fresh water from ocean salt water |
Jul. 13, 2004 |
| 6692644 |
Process for recovering oil and sulfonates from filtration panel |
Feb. 17, 2004 |
| 6692616 |
Method for purifying trimethylolpropane, which is produced by hydrogenation, by means of continuous distillation |
Feb. 17, 2004 |
| 6676809 |
Process for removal of hydrogen fluoride |
Jan. 13, 2004 |
| 6673212 |
Polymerization-inhibited distillation |
Jan. 6, 2004 |
| 6649027 |
Water reclamation system |
Nov. 18, 2003 |
| 6635150 |
Method for distilling a fluid with horizontal vapor transfer into a condensation zone and modular device for implementing said method |
Oct. 21, 2003 |
| 6632331 |
Distillation of polycyclic diol |
Oct. 14, 2003 |
| 6554967 |
Method of refining dihydroxyaryl compound |
Apr. 29, 2003 |
| 6506284 |
Reduced-pressure distillation system |
Jan. 14, 2003 |
| 6494995 |
Solar distillation system |
Dec. 17, 2002 |
| 6491795 |
Process for recovering benzyl benzoate |
Dec. 10, 2002 |
| 6461482 |
Process for preparing high-purity phytantriol |
Oct. 8, 2002 |
| 6433242 |
Process for fractionating dibutene |
Aug. 13, 2002 |
| 6398919 |
Extraction apparatus and method |
Jun. 4, 2002 |
| 6391161 |
Method for reducing the chlorine content of low molecular weight isocyanates |
May. 21, 2002 |
| 6348134 |
Plant for the distillation of a liquid product |
Feb. 19, 2002 |
| 6346173 |
Method for the vacuum distillation of a liquid product, particularly oil stock, (variants) and system for realizing the same |
Feb. 12, 2002 |
| 6346172 |
Process for producing difluoromethane |
Feb. 12, 2002 |
| 6342127 |
Distillation device |
Jan. 29, 2002 |
| 6334935 |
Distillation of (meth) acryloxy-bearing alkoxysilane |
Jan. 1, 2002 |
| 6303006 |
System and method for distilling liquid |
Oct. 16, 2001 |
| 6294056 |
Distillation method and distillation apparatus |
Sep. 25, 2001 |
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