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US 4,938,170 AGranted
Thermal reactor
AssigneeEbara Corporation
InventorsTakahiro Ohshita, Tsutomu Higo, Shigeru Kosugi, Naoki Inumaru, Hajime Kawaguchi
Life of this patent
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Abstract
A thermal reactor which utilizes a fluidizing bed includes a thermal energy recovery chamber having a heat exchanger therein. Fluidizing medium disposed in the fluidizing bed is supplied into the thermal energy recovery chamber due to circulation of the fluidizing medium within the fluidizing bed. The fluidizing medium is passed through the thermal energy recovery chamber such that thermal energy present in the fluidizing medium is transferred to the heat exchanger.
Claims26
Thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- two partition wall means, disposed in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor, for forming two thermal energy recovery chamber means for recovering thermal energy, each of said two recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber, said inclined partition wall means being arranged to generate a circulating zone of said fluidizing medium in said fluidizing bed chamber;
- two auxiliary diffusor means for directing a pressurized gas into each respective one of said two recovery chamber means;
- and
- a heat exchanger disposed in each of said two recovery chamber means.
3 more elements
A thermal reactor as claimed in any one of claims 1, 3 or 5, wherein a top surface of said diffusor means is inclined at an angle of 0.degree.-15.degree. relative to the horizon.
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a main diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- a partition wall means disposed above said main diffusor means in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor, for forming a recovery chamber means for recovering thermal energy, said recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber, said partition wall means being inwardly inclined in the range of 10.degree.-60 .degree. relative to the horizon;
- an auxiliary diffusor means for directing a pressurized gas into said recovery chamber;
- a heat exchanger disposed in said recovery chamber means;
- and
- said main diffusor means including plural diffusor means, a first part of said plural diffusor means positioned below said recovery chamber being arranged for discharging a gas flow stronger than a gas flow from a second part of said plural diffusor means.
4 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a main diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- a partition wall means, disposed in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor for forming a recovery chamber means for recovering thermal energy, said recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber, said partition wall means being inwardly inclined in the range of 10.degree.-60.degree. relative to the horizon;
- an auxiliary diffusor means for directing a pressurized gas into said recovery chamber;
- a heat exchanger disposed in said recovery chamber means;
- and
- said main diffusor means being arranged such that the mass flow of gas from a portion thereof positioned below said recovery chamber is substantially greater than the mass flow of gas from said auxiliary diffusor means.
4 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- a partition wall means, disposed above said diffusor means in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor, for forming a recovery chamber means for recovering thermal energy, said recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber;
- an auxiliary diffusor means for directing a pressurized gas into said recovery chamber;
- a heat exchanger disposed in said recovery chamber;
- said partition wall means being inwardly inclined in the range of 10.degree.-60.degree. relative to the horizon;
- and
- the horizontal projection length (d) of said partition wall means being in the range of ##EQU3## wherein D:
- half of horizontal extension length of the diffusor;
- and
- d:
- projected length of the partition wall onto and within the horizontal extension of the diffusor.
9 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a diffusor means, which includes first and second portions and is disposed at the bottom of the reactor and is adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium from said first portion at a first mass flow and from said second portion at a second mass flow, said first mass flow being greater than said second mass flow;
- a partition wall means, disposed in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor or another partition wall means, for forming a recovery chamber means for recovering thermal energy, said recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber, said partition wall means being inclined 10.degree.-60.degree. relative to the horizon;
- an auxiliary diffusor means for directing a pressurized gas into said recovery chamber;
- a heat exchanger disposed in said recovery chamber and adapted to circulate a heat exchanging medium therethrough, a heat exchanging surface of said heat exchanger being exposed to said recovery chamber means;
- and
- first regulating means for regulating mass flow of said gas discharged from said diffusor means so that different portions of said diffusor means discharge gas at different mass flows so as to produce a descending fluidized bed and a rising fluidized bed and thereby generate a circulation of said fluidizing medium in said fluidizing bed chamber.
4 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a main diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- a partition wall means, disposed in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor or another partition wall means, for forming a thermal energy recovery chamber means for recovering thermal energy, said thermal energy recovery chamber means including openings at both a top and a bottom end thereof communicating with said fluidizing bed chamber;
- auxiliary diffusor means for directing a pressurized gas into said recovery chamber means;
- a heat exchanger disposed in said recovery chamber means;
- said inclined partition wall means being arranged to generate a circulating zone of said fluidizing medium in said fluidizing bed chamber;
- and
- said main diffusor means comprising at least three gas chambers including a center gas chamber and two other gas chambers disposed on opposite sides of said center gas chamber, said center gas chamber being arranged to blow gas gently while said two other gas chambers are arranged to blow gas strongly relative to said center gas chamber.
5 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- a main diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium at different mass flows in different areas above the diffusor means;
- an inclined partition wall means, disposed at both sides of said fluidizing bed chamber adjacent to but spaced from said walls of said reactor, for forming a recovery chamber means for recovering thermal energy, said recovery chamber means having openings at both a top and bottom end thereof in communication with said fluidizing bed chamber;
- auxiliary diffusor means for directing a pressurized gas into said recovery chamber means;
- a heat exchanger disposed in said recovery chamber means;
- and
- said main diffusor means being chevron shaped and said partition wall means comprising a pair of partition walls inclined relative to the horizon at an angle in the range of 25.degree.-45.degree., whereby a circulating zone of said fluidizing medium is generated in said fluidizing bed chamber.
4 more elements
A thermal reactor comprising:
- a fluidizing bed chamber surrounded by walls and containing a fluidizing medium;
- main diffusor means, disposed at the bottom of the reactor and adapted to be coupled to a pressurized gas source, for discharging gas upwardly into said fluidizing medium;
- partition wall means, disposed in said fluidizing bed chamber and inclined adjacent to but spaced from said walls of said reactor, for forming a recovery chamber means, said recovery chamber means having openings at both top and bottom ends thereof in communication with said fluidizing bed chamber and being arranged for recovering thermal energy;
- auxiliary diffusor means for directing a pressurized gas into said recovery chamber means;
- a heat exchanger disposed in said recovery chamber means;
- and
- said main diffusor means being formed as a single gas chamber having a top surface with perforations therein arranged so as to provide differing mass flows of gas through different portions of said top surface, and said partition wall means comprising inclined partition walls, whereby a circulating zone in said fluidizing medium is generated in said fluidizing bed chamber.
4 more elements
Dependencies are inferred from the claim text.