Activated charcoal production
First Claim
Patent Images
1. A process for producing granular activated carbon by carbonization of suitable carbonaceous polymers in the form of polymer granules as a starting material, which polymer granules are convertible by carbonization into carbon, wherein the polymer granules are continuously moved through a carbonization apparatus comprising a plurality of temperature zones so that a complete conversion of the starting material to carbon is effected, wherein the carbonization apparatus comprises at least the following temperature zones in the following order:
- a) a first temperature zone (“
sulfonating zone”
) where in the case that the starting material contains no groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages or else in the case that such groups are to be additionally introduced into the starting material, these groups are introduced into the starting material;
thenb) a second temperature zone (“
pre-carbonization zone”
or “
zone of acidic gases”
), the second temperature zone having a higher average temperature than the first temperature zone, wherein in the second temperature zone the groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages are split off from the starting material, so that carbonization and thermal decomposition of the starting material ensues, accompanied by crosslinking of the polymers and formation of carbon; and
thenc) a third temperature zone (“
post-carbonization zone”
), the third carbonization zone having a higher average temperature than the second temperature zone, wherein in the third temperature zone further carbonization of the starting material resulting from the second temperature zone is performed, so that a complete conversion of the starting material to carbon is effected;
wherein the individual temperature zones are separately and independently controlled.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a process for producing granular, particularly spherical activated carbon by carbonization of suitable carbonaceous polymers in the form of polymer granules, in particular polymer spherules, as a starting material, which are convertible by carbonization into carbon at least essentially, wherein the polymer granules, in particular the polymer spherules, are continuously moved through a carbonization apparatus comprising a plurality of temperature zones and/or a temperature gradient so that an at least essentially complete conversion of the starting material to carbon is effected.
17 Citations
20 Claims
-
1. A process for producing granular activated carbon by carbonization of suitable carbonaceous polymers in the form of polymer granules as a starting material, which polymer granules are convertible by carbonization into carbon, wherein the polymer granules are continuously moved through a carbonization apparatus comprising a plurality of temperature zones so that a complete conversion of the starting material to carbon is effected, wherein the carbonization apparatus comprises at least the following temperature zones in the following order:
-
a) a first temperature zone (“
sulfonating zone”
) where in the case that the starting material contains no groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages or else in the case that such groups are to be additionally introduced into the starting material, these groups are introduced into the starting material;
thenb) a second temperature zone (“
pre-carbonization zone”
or “
zone of acidic gases”
), the second temperature zone having a higher average temperature than the first temperature zone, wherein in the second temperature zone the groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages are split off from the starting material, so that carbonization and thermal decomposition of the starting material ensues, accompanied by crosslinking of the polymers and formation of carbon; and
thenc) a third temperature zone (“
post-carbonization zone”
), the third carbonization zone having a higher average temperature than the second temperature zone, wherein in the third temperature zone further carbonization of the starting material resulting from the second temperature zone is performed, so that a complete conversion of the starting material to carbon is effected;wherein the individual temperature zones are separately and independently controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A process for producing granular activated carbon by carbonization of suitable carbonaceous polymers in the form of polymer granules as a starting material, which polymer granules are convertible by carbonization into carbon, wherein the polymer granules are continuously moved through a carbonization apparatus comprising a plurality of temperature zones so that a complete conversion of the starting material to carbon is effected, wherein the carbonization apparatus comprises at least the following temperature zones in the following order:
-
a) a first temperature zone (“
sulfonating zone”
) where in the case that the starting material contains no groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages or else in the case that such groups are to be additionally introduced into the starting material, these groups are introduced into the starting material;
thenb) a second temperature zone (“
pre-carbonization zone”
or “
zone of acidic gases”
), the second temperature zone having a higher average temperature than the first temperature zone, wherein in the second temperature zone the groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages are split off from the starting material, so that carbonization and thermal decomposition of the starting material ensues, accompanied by crosslinking of the polymers and formation of carbon; and
thenc) a third temperature zone (“
post-carbonization zone”
), the third carbonization zone having a higher average temperature than the second temperature zone, wherein in the third temperature zone further carbonization of the starting material resulting from the second temperature zone is performed, so that a complete conversion of the starting material to carbon is effected;wherein the individual temperature zones are separately and independently controlled, the carbonization apparatus further comprising at least one lock between individual successive temperature zones or within individual temperature zones, so that there is at least essentially no mixing through of process gases from different temperature zones between which said at least one lock is disposed.
-
-
20. A process for producing granular activated carbon by carbonization of suitable carbonaceous polymers in the form of polymer granules as a starting material, which polymer granules are convertible by carbonization into carbon, wherein the polymer granules are continuously moved through a carbonization apparatus comprising a plurality of temperature zones so that a complete conversion of the starting material to carbon is effected, wherein the carbonization apparatus comprises at least the following temperature zones in the following order:
-
a) a first temperature zone (“
sulfonating zone”
) where in the case that the starting material contains no groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages or else in the case that such groups are to be additionally introduced into the starting material, these groups are introduced into the starting material;
thenb) a second temperature zone (“
pre-carbonization zone”
or “
zone of acidic gases”
), the second temperature zone having a higher average temperature than the first temperature zone, wherein in the second temperature zone the groups which, when thermally decomposed, lead to free radicals and thus to cross-linkages are split off from the starting material, so that carbonization and thermal decomposition of the starting material ensues, accompanied by crosslinking of the polymers and formation of carbon; and
thenc) a third temperature zone (“
post-carbonization zone”
), the third carbonization zone having a higher average temperature than the second temperature zone, wherein in the third temperature zone further carbonization of the starting material resulting from the second temperature zone is performed, so that a complete conversion of the starting material to carbon is effected;wherein the individual temperature zones are separately and independently controlled, with at least one lock being present between the second temperature zone and the third temperature zone, so that acidic process gases from the second temperature zone are not mixed with other process gases.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeBLÜCHER GmbH
-
Original AssigneeBLÜCHER GmbH
-
InventorsDe Ruiter, Ernest
-
Primary Examiner(s)Lorengo; Jerry
-
Assistant Examiner(s)MICALI, JOSEPH
-
Application NumberUS10/567,794Publication NumberTime in Patent Office2,033 DaysField of Search502/423, 502/432US Class Current502/418CPC Class CodesB01J 20/20 comprising free carbon; com...B01J 20/28004 Sorbent size or size distri...B01J 20/28019 Spherical, ellipsoidal or c...B01J 20/28057 Surface area, e.g. B.E.T sp...C01B 32/336 characterised by gaseous ac...C01B 32/366 by physical processes, e.g....C01B 32/39 Apparatus for the preparati...
