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US 12,194,452 B2Granted
Thermolytic fragmentation of sugars using resistance heating
AssigneeHaldor TopsøE A/S
InventorsLars Storm Pedersen, Morten Boberg Larsen, Peter Mølgaard Mortensen
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Abstract
A process for large scale and energy efficient production of oxygenates from sugar is disclosed in which a sugar feedstock is introduced into a thermolytic fragmentation reactor including a fluidized stream of heat carrying particles which are separated from the reaction product and directed to a reheater comprising a resistance heating system.
Claims53
A reactor system for thermolytic fragmentation of a sugar into C1-C3 oxygenates comprising:
- a fragmentation reactor comprising heat carrying particles for supplying heat to the thermolytic fragmentation of the sugar into C1-C3 oxygenates, said fragmentation reactor being equipped with a fragmentation particle inlet for introducing heated heat carrying particles into the fragmentation reactor, a fragmentation particle outlet for collecting spent heat carrying particles from the fragmentation reactor, a feedstock inlet for introducing the sugar into the fragmentation reactor, a fragmentation riser comprising a fragmentation zone and allowing thermolytic fragmentation of the sugar, and a product outlet for recovering the C1-C3 oxygenates;
- a reheater, said reheater comprising:
- a first reheater gas inlet;
- a reheater particle inlet;
- a reheater particle outlet;
- a reheater gas outlet;
- and
- a resistance heating system,
- first flow means for conveying spent heat carrying particles from the fragmentation particle outlet to the reheater particle inlet;
- and
- second flow means for conveying heated heat carrying particles from the reheater particle outlet to the fragmentation particle inlet,
- wherein the resistance heating system comprises a heating structure of electrically conductive material, said heating structure being arranged in a heating zone within the reheater to provide heat to the heat carrying particles within the reheater.
9 more elements
A process for carrying out a thermolytic fragmentation of a sugar into C1-C3 oxygenates, said process comprising the steps of:
- a. providing heated heat carrying particles being suitable for fluidization;
- b. introducing the heated heat carrying particles into a fragmentation reactor through a fragmentation particle inlet to produce a fluidized stream of particles in a fragmentation riser of the fragmentation reactor, the riser comprising a fragmentation zone;
- c. providing a feedstock comprising a sugar;
- d. introducing the feedstock into the fluidized stream of particles;
- e. allowing the sugar to undergo a thermolytic fragmentation to produce a particle dense fragmentation product comprising the C1-C3 oxygenates formed;
- f. separating a fraction of the heat carrying particles from the particle dense fragmentation product to produce spent heat carrying particles and a particle lean fragmentation product comprising the C1-C3 oxygenates formed;
- g. recovering the C1-C3 oxygenates;
- h. withdrawing the spent heat carrying particles separated in step f) from a fragmentation particle outlet in the form of a first stream of heat carrying particles and conveying this first stream of heat carrying particles via a first flow means followed by supplying the first stream of heat carrying particles to a reheater through a reheater particle inlet;
- i. allowing the first stream of heat carrying particles to absorb heat within the reheater in a heating zone to produce heated heat carrying particles, wherein the reheater uses resistance heating as heat source for heating the first stream of heat carrying particles;
- j. withdrawing the heated heat carrying particles produced in step i) from a reheater particle outlet in the form of a second stream of heat carrying particles and conveying this second stream of heat carrying particles via a second flow means followed by supplying the second stream of heat carrying particles to the fragmentation reactor through the fragmentation particle inlet;
- and then k. repeating the steps c) to k).
8 more elements
A process for carrying out a thermolytic fragmentation of a sugar into C1-C3 oxygenates, said process comprising the steps of:
- a. providing heated heat carrying particles being suitable for fluidization;
- b. introducing the heated heat carrying particles into a fragmentation reactor through a fragmentation particle inlet to produce a fluidized stream of particles in a fragmentation riser of the fragmentation reactor, the riser comprising a fragmentation zone;
- c. providing a feedstock comprising a sugar;
- d. introducing the feedstock into the fluidized stream of particles;
- e. allowing the sugar to undergo a thermolytic fragmentation to produce a particle dense fragmentation product comprising the C1-C3 oxygenates formed;
- f. separating a fraction of the heat carrying particles from the particle dense fragmentation product to produce spent heat carrying particles and a particle lean fragmentation product comprising the C1-C3 oxygenates formed;
- g. recovering the C1-C3 oxygenates;
- h. withdrawing the spent heat carrying particles separated in step f) from a fragmentation particle outlet in the form of a first stream of heat carrying particles and conveying this first stream of heat carrying particles via a first flow means followed by supplying the first stream of heat carrying particles to a reheater through a reheater particle inlet;
- i. allowing the first stream of heat carrying particles to absorb heat within the reheater in a heating zone to produce heated heat carrying particles;
- j. withdrawing the heated heat carrying particles produced in step i) from a reheater particle outlet in the form of a second stream of heat carrying particles and conveying this second stream of heat carrying particles via a second flow means followed by supplying the second stream of heat carrying particles to the fragmentation reactor through the fragmentation particle inlet;
- and then
- k. repeating the steps c) to k),
- wherein the superficial gas velocity in the heating zone of the reheater is in the range of from 0.01 m/s to 2 m/s.
10 more elements
Dependencies are inferred from the claim text.