Suspended combustion type power steam generator

Patent metadata

Field	Value
Publication number	US-9470415-B2
Application number	US-201214394521-A
Country	US
Kind code	B2
Filing date	Dec 26, 2012
Priority date	Apr 16, 2012
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

There is provided a suspended combustion type power steam generator capable of rapid and high-temperature pyrolysis using FRDF for extending residence time of high-temperature gas, and particularly the present invention improves the heating conditions of fluid in an arch water pipe, a heating water pipe and a down pipe by extending the residence time of high-temperature gas inside a combustion chamber. The present invention is an improvement of a power steam generator using fine refuse derived fuel (FRDF) which is an alternative energy source, and a flameless combustion device using fossil fuel capable of structuring a new additional facility so as to address the possibility of irregular raw material supply in the ethyl alcohol fuel operation for new renewable energy, that is, FRDF. Therefore, fuel conversion operations can be carried out and a circulation path is partially restructured so as to prevent the interruption of the natural convection function of boiler water regardless of FRDF operation or fossil fuel operations. The existing power steam generator is commonly used in 0.5 tons class and has the problem of having a short residence time of high-temperature gas according to the heating conditions of fluid in a large capacity power steam generator of 5 tons or higher. The present invention extends the residence time of high-temperature gas in the combustion chamber by installing a baffle plate portion so as to sufficiently satisfy the heating condition of fluid as the result.

First claim

What is claimed is:

1. A suspended combustion type power steam generator, comprising:
a continuous inlet disposed on a top of a combustion chamber to continuously supply fine refuse derived fuel (FRDF);
a continuous outlet disposed on a bottom of the combustion chamber to discharge combustion material;
a hollow dry distillation high pyrolysis down combustion type water tube boiler having a firebox first water pipe connecting a water drum and a steam drum;
a down pipe connected to a header circulator directly connected to the water drum, and downwardly inclined to be connected to a header;
an arch header pipe directly connected to an arch header connecting an arch pipe and a heating pipe extended respectively from the header and installed in opposite to each other, and extending upwardly;
a front water wall header circulator connected to a first end of a horizontal left and right pipe wall header connected to a left and right pipe wall header circulator directly connected to the water drum, and extending upwardly;
a front water evaporation rise pipe upwardly extended from a front wall header connected to the arch header pipe and the front water wall header circulator, and connected to the steam drum of a water tube boiler;
a number of refractory arch tubes upwardly obliquely extended from the arch header through a center of the combustion chamber, and smoothly bending closer toward the steam drum to be connected to the steam drum;
a heat-storage refractory arch on an upper side of the refractory arch tubes at the center of the combustion chamber to further maximize the endothermic reaction effect; and
a baffle plate portion disposed in the combustion chamber under the refractory arch to prolong a residence time of high temperature gas generated by the combustion of FRDF and to promote a heating condition of a fluid in the arch pipe, the heating pipe, and the down pipe,
wherein the baffle plate portion comprises at least two or more first baffle plates extending downwardly from an upper portion of a pyro combust disposed in an upper portion of the combustion chamber, and at least two or more second baffle plates extending upwardly from a lower portion of the combustion chamber, and
wherein the first baffle plates and the second baffle plates are disposed alternately with each other such that a lower end portion of each of the first baffle plates and an upper end portion of each of the second baffle plates are overlapped with each other.

2. The suspended combustion type power steam generator according to claim 1 , wherein the refractory arch tube is upwardly inclined to the center of the combustion chamber, and connected to the steam drum.

3. The suspended combustion type power steam generator according to claim 1 , wherein the lower end portion of each of the first baffle plates has a first baffle flange protruding to a lateral side of said each of the first baffle plates, the upper end portion of each of the second baffle plates has a second baffle flange protruding to a lateral side of said each of the second baffle plates, and the first baffle flange of the first baffle flange is opposite to a corresponding second baffle flange of the second baffle flange.

4. A suspended combustion type power steam generator, comprising:
a continuous inlet disposed on a top of a combustion chamber to continuously supply fine refuse derived fuel (FRDF);
a continuous outlet disposed on a bottom of the combustion chamber to discharge combustion material;
a hollow dry distillation high pyrolysis down combustion type water tube boiler having a firebox first water pipe connecting a water drum and a steam drum;
a down pipe connected to a header circulator directly connected to the water drum, and downwardly inclined to be connected to a header;
an arch header pipe directly connected to an arch header connecting an arch pipe and a heating pipe extended respectively from the header and installed in opposite to each other, and extending upwardly;
a front water wall header circulator connected to a first end of a horizontal left and right pipe wall header connected to a left and right pipe wall header circulator directly connected to the water drum, and extending upwardly;
a front water evaporation rise pipe upwardly extended from a front wall header connected to the arch header pipe and the front water wall header circulator, and connected to the steam drum of a water tube boiler;
a number of refractory arch tubes upwardly obliquely extended from the arch header through a center of the combustion chamber, and smoothly bending closer toward the steam drum to be connected to the steam drum;
a heat-storage refractory arch on an upper side of the refractory arch tubes at the center of the combustion chamber to further maximize the endothermic reaction effect; and
a baffle plate portion disposed in the combustion chamber under the refractory arch to prolong a residence time of high temperature gas generated by the combustion of FRDF and to promote a heating condition of a fluid in the arch pipe, the heating pipe, and the down pipe,
wherein the baffle plate portion comprises at least two or more first baffle plates extending downwardly from an upper portion of a pyro combust disposed in an upper portion of the combustion chamber, and at least two or more second baffle plates extending upwardly from a lower portion of the combustion chamber, and
wherein the first baffle plates and the second baffle plates are disposed alternately with each other, a lower end portion of each of the first baffle plates has a first baffle flange protruding to a lateral side of said each of the first baffle plates, an upper end portion of each of the second baffle plates has a second baffle flange protruding to a lateral side of said each of the second baffle plates, and the first baffle flange of the first baffle flange is opposite to a corresponding second baffle flange of the second baffle flange.

5. The suspended combustion type power steam generator according to claim 4 , wherein the refractory arch tube is upwardly inclined to the center of the combustion chamber, and connected to the steam drum.

Assignees

• Korea Energy Research Inst
• Es Co Ltd

Inventors

• Park Seong-Ryong
• Shin Kyung-Soo

Classifications

• F22B13/00

  Steam boilers of fire-box type, i.e. boilers where both combustion chambers and subsequent flues or fire tubes are arranged within the boiler body · CPC title

• C10B53/00 Primary

  Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form (wet carbonising of peat C10F) · CPC title

• F23G5/46 Primary

  Recuperation of heat · CPC title

• Y02P20/133

  Renewable energy sources, e.g. sunlight · CPC title

• F22B37/40

  Arrangements of partition walls in flues of steam boilers, e.g. built-up from baffles · CPC title