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Combustion device

A technology of a combustion device and a burner, which is applied in the direction of combustion type, combustion method, lighting and heating equipment, etc., can solve the problems of increased cost, equipment cost and high maintenance cost

Active Publication Date: 2011-08-03
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical dust removal mechanism increases the cost of the entire system due to high equipment costs and maintenance costs

Method used

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Examples

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no. 1 Embodiment

[0030] refer to figure 1 and Fig. 2 illustrate the combustion device of the first embodiment.

[0031] figure 1 The waste treatment system 1 of the illustrated embodiment includes a pyrolysis furnace 3 , a combustion device 4 , a heat utilization device 5 , and a coal dust recovery container 6 . A single or a plurality of blowers (not shown) arranged on the downstream side in the processing system 1 suck exhaust gas. In addition, the whole processing system 1 is managed and controlled comprehensively by the process control computer which is not shown in figure. The pyrolysis furnace 3 pyrolyzes organic wastes in a high-temperature reducing gas environment. The combustion device 4 burns combustible pyrolysis gas generated in the pyrolysis furnace 3 . The heating device 5 utilizes the high-temperature combustion exhaust gas discharged from the combustion device 4 . Hereinafter, each constituent unit of the waste treatment system 1 will be described.

[0032]The pyrolysis f...

no. 2 Embodiment

[0044] Next, refer to image 3 The second embodiment will be described. In addition, the description of the parts common to the first embodiment will be omitted.

[0045] Combustion device 4A of present embodiment does not possess in the bottom of device figure 1 Shown coal dust recovery container 6. The combustion device 4A includes a bottom cover 49 that closes the lower end opening of the outer cylinder 41 . The bottom cover 49 can be opened and closed.

[0046] In the combustion device of this embodiment, the coal dust 60 adheres to the inner peripheral wall of the outer cylinder 41 , and finally peels off from the wall surface and accumulates on the bottom cover 49 . The bottom cover 49 is opened regularly, and the accumulated coal dust 60 is recovered from the outer cylinder 41 .

[0047] According to this embodiment, the outer cylinder 41 with the bottom cover 49 functions as a dust collection container. Therefore, since 4 A of combustion apparatuses do not need a...

no. 3 Embodiment

[0049] Next, refer to Figure 4 The third embodiment will be described. In addition, descriptions of parts common to the above-described embodiments are omitted.

[0050] In the combustion device 4B of this embodiment, the shape of the lower half of the outer cylinder is an inverted conical cylinder shape. That is, the shape of the upper half part 41a of an outer cylinder is cylindrical. The shape of the lower half part 41b of the outer cylinder is an inverted cone shape, and the lowermost part 41c of the outer cylinder is a small cylindrical shape. The lowermost part 41c is a discharge part. The inner diameter of the lower half 41b of the inverted conical outer cylinder gradually decreases as it goes downward. The lower end opening 42a of the inner cylinder is located in the lower half 41b of the inverted conical outer cylinder. In addition, the lowermost portion 41c of the outer cylinder, that is, the discharge portion has an opening 41d at the lower end. The opening 4...

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Abstract

A combustion device can reduce coal dusts, NOx or nitrous oxide contained in combustion exhaust gas. The combustion device comprises: a vertical double-layer cylindrical furnace body comprising an outer cylinder and a inner cylinder with a specified combustion space; a superior combustor allowing pyrolysis gas to perform hybrid combustion with primary combustion air in the combustion space; a line for supplying the pyrolysis gas to the superior combustor; a line for supplying the primary combustion air to the superior combustor; an inferior combustor which is disposed more lowly than the superior combustor, ejects secondary combustion air, and allows the uncombusted gas in the combustion space to perform hybrid combustion with the secondary combustion air; and a line for supplying the secondary combustion air to the inferior combustor. A lower end opening of the inner cylinder forms a flow path for discharging the combustion exhaust gas from the combustion space. The superior combustor comprises a first combustion port with an opening at the upper inner circumferential wall of the outer cylinder for ejecting the pyrolysis gas and the primary combustion air along the circumferential direction of the upper inner circumferential wall of the outer cylinder and forming a rotating flow in the combustion space.

Description

[0001] This application is based on Japanese Patent Application No. 2010-20637 (filing date: February 1, 2010), and priority is claimed from this application. This application incorporates the entire contents of this application by reference thereto. technical field [0002] The present invention relates to a combustion device used in a waste treatment system for treating organic waste. Background technique [0003] The waste treatment system for treating organic waste such as dewatered sludge, pyrolyzes organic waste in a pyrolysis furnace in a low-oxygen state, and discharges pyrolysis gas and pyrolysis residue. The pyrolysis gas discharged from the pyrolysis furnace is flammable, so the pyrolysis gas is used as a heat source of the combustion device. [0004] In the waste treatment system described in JP, P2007-270018A, when the organic waste contains ash, a large amount of coal dust is generated when the organic waste is burned or pyrolyzed. As time goes by, coal dust ...

Claims

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Application Information

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IPC IPC(8): F23G7/06
CPCF23G5/027F23G7/001F23G7/061F23G2203/206
Inventor 今井正轰木朋浩安部裕宣佐藤毅夫织田真人小峰英明林幸司
Owner KK TOSHIBA
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