公开(公告)号：NO338006B1

公开(公告)日：2016-07-18

申请号：NO20054008

申请日：2005-08-29

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES ,  WIT NORA ANNA DE ,  JONCKERS KEES ,  MENNEN JOHANNES HENRICUS ,  HOOIJKAAS HERBERT WILLEM GERRIT ,  KERKHOVE BASTIAAN RENÉ AGNES MARIE VAN DE

IPC: C01C1/12 ,  B01D53/58

公开(公告)号：AT30474T

公开(公告)日：1987-11-15

申请号：AT83201100

申请日：1983-07-27

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES ,  BURKS HENK CHRISTIAAN ,  RAEMAEKERS KAREL GERARDUS HUBE

IPC: G01N25/02 ,  C07C67/00 ,  C07C239/00 ,  C07C273/02 ,  G01N11/00 ,  G01N21/00 ,  G01N21/21 ,  G01N25/14

Abstract: Method and apparatus for determining the saturation temperature of a solution. In an optical measurement vessel, the temperature of a sample of the solution is gradually decreased until crystals are formed and subsequently gradually increased until the crystals dissolve. The temperature is measured continuously and the formation and dissolving of the crystals is detected optically by means of a beam of polarised light which is transmitted through the measuring vessel, and passed through an analyzer the direction of polarisation of which is normal to that of the beam of light, and detected by a photodetector behind the analysator. Only when a small amount of optically active crystals is present in the solution, in which the direction of polarisation of the light is rotated, the photodetector measures a certain light intensity. The moment the last crystals, upon heating, dissolve is detected by the drop of the measured light intensity to a minimum value. The temperature of the solution at that moment is the saturation temperature of the solution. … Preferably the beam of polarized light is generated by means of a laser. For monitoring the transmitted beam, a beam splitter is preferably mounted in front of the analyzer, which casts part of the transmitted light onto a second photodetector.

公开(公告)号：FI71501B

公开(公告)日：1986-10-10

申请号：FI773282

申请日：1977-11-02

Applicant: STAMICARBON ,  UNIE VAN KUNSTMESTFAB BV

Inventor： BIERMANS ANDREAS JOHANNES ,  JONCKERS KEES

IPC: B01D20060101 ,  B01D3/00 ,  B01D3/14 ,  B01D3/34 ,  B01D53/00 ,  B01D53/04 ,  B01D53/14 ,  B01D57/00 ,  C01B20060101 ,  C01B3/20 ,  C01B32/50 ,  C01C20060101 ,  C01C1/02 ,  C01C1/10 ,  C01C1/12 ,  C07C1/12 ,  C07C273/04

Abstract: Procedure for separately recovering substantially pure NH3 and substantially pure CO2 from a composition comprising NH3 and CO2, which method comprises treating said composition sequentially through three separation zones of which the NH3 separation zone is operated so that a gaseous phase of substantially pure NH3 and a liquid phase boiling at a constant temperature and containing NH3, CO2 and water are obtained, the liquid phase of which is passed to the CO2 separation zone, an area that is made to work so that Obtain a gas phase of substantially pure CO2 and a residual liquid phase that boils at a constant temperature and that contains NH3, CO2 and water, the residual liquid phase of which is passed to a desorption zone where substantially all of the NH3, CO2 and part from the water they are removed in the form of a gas phase and are fed at least partially to the NH3 separation zone. (Machine-translation by Google Translate, not legally binding)

公开(公告)号：AT20335T

公开(公告)日：1986-06-15

申请号：AT83200309

申请日：1983-03-03

Applicant: STAMICARBON

Inventor： GOORDEN JOSEPHUS JOHANNES PETR ,  LAURENS JAN SIMON ,  BIERMANS ANDREAS JOHANNES

IPC: C01C1/12

公开(公告)号：DE2748639A1

公开(公告)日：1978-05-11

申请号：DE2748639

申请日：1977-10-29

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: C01C1/02 ,  B01D3/14 ,  B01D19/00 ,  B01D53/26 ,  C01B32/50 ,  C01C1/12 ,  C01C1/10 ,  C07D251/60 ,  C07C126/02

Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. An ammonia off-gas, substantially free of carbon dioxide and water, is obtained from the ammonia separation zone, and the residual liquid phase is introduced into the carbon dioxide separation zone. Diluting water is also added to the carbon dioxide separation zone in an amount of from about 0.2 to 6 times, by weight, the combined total weight of the residual liquid phase from the ammonia separation zone and the by-product mixture, if any, fed into the carbon dioxide separation zone. A carbon dioxide off-gas, substantially free of ammonia and water, is obtained from the carbon dioxide separation zone and the residual liquid phase therefrom is introduced into the desorption zone wherein substantially all of the ammonia and carbon dioxide are desorbed and separated from the liquid phase and introduced into the ammonia separation zone.

公开(公告)号：NO773762L

公开(公告)日：1978-05-05

申请号：NO773762

申请日：1977-11-02

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: B01D3/14 ,  C01C1/02 ,  B01D19/00 ,  B01D53/26 ,  C01B32/50 ,  C01C1/12 ,  C01C

Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. An ammonia off-gas, substantially free of carbon dioxide and water, is obtained from the ammonia separation zone, and the residual liquid phase is introduced into the carbon dioxide separation zone. Diluting water is also added to the carbon dioxide separation zone in an amount of from about 0.2 to 6 times, by weight, the combined total weight of the residual liquid phase from the ammonia separation zone and the by-product mixture, if any, fed into the carbon dioxide separation zone. A carbon dioxide off-gas, substantially free of ammonia and water, is obtained from the carbon dioxide separation zone and the residual liquid phase therefrom is introduced into the desorption zone wherein substantially all of the ammonia and carbon dioxide are desorbed and separated from the liquid phase and introduced into the ammonia separation zone.

公开(公告)号：NO151116C

公开(公告)日：1985-02-13

申请号：NO773762

申请日：1977-11-02

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: B01D3/14 ,  B01D19/00 ,  B01D53/26 ,  C01C1/02 ,  C01B32/50 ,  C01C1/12 ,  C01C1/10 ,  C01B31/20

Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. An ammonia off-gas, substantially free of carbon dioxide and water, is obtained from the ammonia separation zone, and the residual liquid phase is introduced into the carbon dioxide separation zone. Diluting water is also added to the carbon dioxide separation zone in an amount of from about 0.2 to 6 times, by weight, the combined total weight of the residual liquid phase from the ammonia separation zone and the by-product mixture, if any, fed into the carbon dioxide separation zone. A carbon dioxide off-gas, substantially free of ammonia and water, is obtained from the carbon dioxide separation zone and the residual liquid phase therefrom is introduced into the desorption zone wherein substantially all of the ammonia and carbon dioxide are desorbed and separated from the liquid phase and introduced into the ammonia separation zone.

公开(公告)号：MX5686E

公开(公告)日：1983-12-09

申请号：MX794179

申请日：1979-04-27

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: C01B32/50 ,  B01D53/14 ,  C01C1/02 ,  C01C1/12 ,  B01D19/00 ,  B01D35/14

公开(公告)号：AU526062B2

公开(公告)日：1982-12-16

申请号：AU4632579

申请日：1979-04-24

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: C01B32/50 ,  B01D53/14 ,  C01C1/02 ,  C01C1/12

公开(公告)号：NO791441A

公开(公告)日：1979-10-30

申请号：NO791441

申请日：1979-04-27

Applicant: STAMICARBON

Inventor： BIERMANS ANDREAS JOHANNES

IPC: C01B32/50 ,  B01D53/14 ,  C01C1/02 ,  C01C1/12 ,  C01C

CPC classification number: C01C1/12 ,  Y02C10/06

Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. The separation is effected by maintaining a system pressure differential between the ammonia and carbon dioxide separation zones, or adding diluting water to the carbon dioxide separation zone. The efficiency of the separation is enhanced by introducing an ammonia containing gaseous phase into the bottom of the carbon dioxide separation zone.