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US 8,075,845 B2Granted
Heat-exchanger reactor having mixing zones
AssigneeAlfa Laval Corporate AB
InventorSelim Gülener
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AssigneeAlfa Laval Corporate AB
InventorSelim Gülener
Estimating the term…
The present invention relates to a heat-exchanger reactor comprising a vessel, at least one dividing member selected from plates, walls, or spiral sheets, which dividing member separates heat exchanging fluids into at least one heat exchanging zone from fluids into at least one mixing zone, and at least one flow-directing device having one or more ports or one or more injection ports, which flow-directing device is inserted into the mixing zone. The present invention relates also to uses of the heat-exchanger reactor.
A heat-exchanger reactor comprising:
A chemical reactor comprising a vessel, one or more heat exchanger zones, one or more mixing zones, and at least one dividing member selected from plates, walls, or spiral sheets, which dividing member separates the heat exchanger zones from the mixing zones, and wherein the heat is transferred by conductivity in the dividing member between the mixing zones and the heat exchanger zones, the chemical reactor comprises further one or more flow-directing devices, wherein the flow-directing devices being one or more tubes, one or more pipes, one or more conduits, or combinations of these, said flow-directing devices have one or more ports fluids or one or more injection ports for fluids or combinations thereof, and the flow-directing devices being inserted into the one or more mixing zones, and wherein said tubes or said pipes or said conduits being mounted on a spiral inlet tube.
A chemical reactor comprising a vessel, a heat exchanger zone, one or more mixing zones, and one or more flow-directing devices, said heat-exchanging zone being a spiral heat exchanger, said flow-directing devices being one or more tubes, one or more pipes, one or more conduits, or combinations of these, said flow-directing devices have one or more ports fluids or one or more injection ports for fluids or combinations of these, and the flow-directing devices being inserted into the one or more mixing zones in the spiral heat exchanger, and wherein said tubes or said pipes or said conduits being mounted on a spiral inlet tube.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
With static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits: in the form of distribution pipes
Spray-mixers, e.g. for mixing intersecting sheets of material: with nozzles
Heating or cooling systems: arranged inside the receptacle
Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different…
About 1 year 7 months of term left · ends 19 May 2028 (estimated)
The present invention relates to a heat-exchanger reactor having mixing zones, and a use of the heat-exchanger reactor according to the invention.
In many processes the reactants or the fluids are mixed before entering a heat-exchanging zone and the mixture is then brought to the desired temperature in the heat-exchanging zone. In some processes the heat is transferred from the flow of fluids by heat exchangers connected in series and before each heat exchanger one or more reactants or fluids are added in batch wise portions. According to another practice the reaction flow is circulated in order to restrict any temperature rise. A further solution, which is used, is to connect one or more mixing vessels in series in a so-called cascade of mixing vessels.
All of the above-mentioned solutions have drawbacks because, among other things, they are complicated and expensive.
FIG. 1 shows an inlet pipe to be inserted into a spiral heat exchanger according to one example of the invention.
FIG. 2 shows an inlet pipe having a nozzle according to one example of the invention.
FIG. 3 is an inlet pipe with nozzles, which are spreading fluids in different directions. On the pipes are distant members attached to secure the pipe in the heat exchanger according to one example of the invention.
A pipe or tube 1 is being inserted into a spiral heat exchanger 2 in FIG. 1. On the tube 1 is one or more nozzles 3 placed for inlet of fluids into the mixing zones of the spiral heat exchanger 2. Distance elements 4 are place along tube 1 to secure the tube in the mixing zone. FIG. 2 is a close up view of a tube 1 having a nozzle 3. In FIG. 3 fluids, i.e. water is being sprinkled out from a nozzle 3. The water is sprinkled out in different directions to spread out and to cover the mixing zone in the heat exchanger. FIG. 3 is also showing a distant element 4 in detail. Distant element 4 consists of a planar structure having pegs or pins to secure the element from moving sideways.
In FIG. 4 several tubes 1 are mounted on a spiral inlet tube 5 or spiral inlet pipe 5. This spiral tube 5 is mirroring the spiral of the spiral heat exchanger 2 to facilitate the insertion of the tubes 1 into the heat exchanger 2. Mixing elements, not seen in FIG. 4, may also be inserted into the spiral heat exchanger. The mixing elements may be static mixers.
The heat-exchanger reactor having mixing zones of the invention may for example be used for processes having a process fluid, which could be within the range of 30 to 60 tons, a reaction fluid, which could be within the range of an 0.1 to 4 tons, and the temperature may vary over temperature range 30 to 200° C. The purpose of this Example is to illustrate the performance of the heat-exchanger reactor of the invention, and is not intended to limit the scope of invention.