EP1899645A1

EP1899645A1 - Gas combustion arrangement using circular stream

Info

Publication number: EP1899645A1
Application number: EP06769144A
Authority: EP
Inventors: Suk Jin Jeong
Original assignee: Medexx Co Ltd
Current assignee: MEDEXPIA CO Ltd
Priority date: 2005-07-05
Filing date: 2006-06-30
Publication date: 2008-03-19
Also published as: WO2007004835A1

Abstract

Disclosed is a gas combustion arrangement using a circular stream, which is capable of fully burning gas discharged from waste incinerated (by flame -broiling, high-temperature, thermal decomposition, etc.) in an incinerator provided at a front stage of the gas combustion arrangement by passing the discharged gas through a coil-shaped circular combustion pipe heated at a predetermined temperature. The present invention provides a gas combustion arrangement using a circular stream, which is capable of maximizing a combustion efficiency by prolonging stay of discharged gas, which is introduced through a coil-shaped combustion pipe, inside the gas combustion arrangement as the discharged gas is burned, forming a circular stream, inside and outside the coil-shaped combustion pipe, and burning the discharged gas through direct contact with internal and external surfaces of the combustion pipe with high temperature.

Description

GAS COMBUSTION ARRANGEMENT USING CIRCULAR

STREAM

Technical Field

[1] This invention relates to a gas combustion arrangement using a circular stream, which is capable of fully burning gas discharged from an incinerator provided at a front stage of the gas combustion arrangement by passing the discharged gas through a coil-shaped circular heated combustion pipe. More particularly, this invention relates to a gas combustion arrangement using a circular stream, which is capable of maximizing a combustion efficiency by prolonging stay of discharged gas, which is introduced through a coil-shaped combustion pipe, inside the gas combustion arrangement as the discharged gas is burned, forming a circular stream, inside and outside the coil-shaped combustion pipe, and burning the discharged gas through direct contact with internal and external surfaces of the combustion pipe with high temperature. Background Art

[2] A conventional incineration apparatus for waste disposal basically includes an incinerator for incinerating (flame-broiling) waste, a flame-broiling typed combustor using a burner to burn gas discharged from the incinerator, and a purifier for purifying burned gas discharged from the combustor and discharging the purified gas into the air. In the conventional incineration apparatus for waste disposal, the combustor has an enclosure structure employing a simple-arranged heat generating part having the burner.

[3] However, with the conventional combustor having such a simple-arranged heat generating part, the discharged gas stays inside the combustor for a short time, and it is difficult to keep the temperature of the combustor constant since a space for the heat generating part inside the combustor is large. Accordingly, incompletely burned gas containing pollutants such as dioxin on may be produced and discharged into the air, which may lead to a social issue such as environmental pollution.

[4] Although the environmental pollutants may be partially filtered by a separate purifier provided at a rear stage of the combustor, the purifier has its limited filtering capability and requires many efforts and high costs for installation and maintenance. Disclosure of Invention Technical Problem

[5] In light of the above circumstances, it is an object of the present invention to provide a gas combustion arrangement using a circular stream, which is capable of maximizing a combustion efficiency of gas introduced from an incinerator through a coil-shaped heated combustion pipe by generating a circular stream inside the gas combustion arrangement to prolong stay of discharged gas inside the gas combustion arrangement, and fully burning the introduced gas through contact with an internal surface of the heated combustion pipe.

[6] It is another object of the present invention to provide a gas combustion arrangement using a circular stream, which is capable of suppressing environmental pollutants (such as dust, dioxin and the like) from being produced by fully burning gas introduced from an incinerator with high combustion efficiency by prolongation of stay of the introduced gas. Technical Solution

[7] To achieve the above objects, according to an aspect, the present invention provides a gas combustion arrangement using a circular stream for burning gas discharged from an incinerator, comprising a plurality of electric heaters; a burned gas outlet and a dust outlet provided at an upper portion and a lower portion of the gas combustion arrangement; and a combustion pipe provided adjacent to the electric heaters, the combustion pipe being drawn from the upper side of the combustion arrangement and being rolled downward, the combustion pipe having a coil shape, and the combustion pipe including a discharge pipe having a lower end portion opened.

[8] Preferably, the electric heaters are radially provided in an inner circumference of the gas combustion arrangement.

[9] According to another aspect, the present invention provides a gas combustion arrangement using a circular stream, comprising a housing, a heat generating part having an electric heater, a burned gas outlet and a dust outlet provided at an upper side and a lower side of the heat generating part, wherein the heat generating part includes a combustion pipe having a wiring structure rolled into a coil shape, the combustion pipe including a discharge pipe formed at one end portion of the combustion pipe, and the housing includes a flange having a joining hole in a lower circumference of the housing, the housing being combined to a supporting installation frame using the flange as joining means.

[10] Preferably, the heat generating part further includes a heat insulating part provided at an inner circumference of the heat generating part.

[11] Preferably, the supporting installation frame includes a disk- shaped joint guide flange and hopper- shaped auxiliary outlet 42 integrally formed at a middle portion of the joint guide flange.

Brief Description of the Drawings

[12] Fig. 1 is a partial exploded sectional view of a gas combustion arrangement using a circular stream according to an embodiment of the present invention.

[13] Fig. 2 is a sectional view showing a combined state of a gas combustion arrangement using a circular stream according to an embodiment of the present invention.

[14] Fig. 3 is a perspective view of a combustion pipe employed for a gas combustion arrangement using a circular stream according to an embodiment of the present invention.

[15] Fig. 4 is a view showing an operational state of a gas combustion arrangement using a circular stream according to an embodiment of the present invention.

[16] Fig. 5 is a configurational view of a heat insulating part of a gas combustion arrangement using a circular stream according to another embodiment of the present invention. Best Mode for Carrying Out the Invention

[17] Hereinafter, configuration and operation of a gas combustion arrangement using a circular stream according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[18] Fig. 1 is a partial exploded sectional view of a gas combustion arrangement using a circular stream according to an embodiment of the present invention, Fig. 2 is a sectional view showing a combined state of a gas combustion arrangement using a circular stream according to an embodiment of the present invention, Fig. 3 is a perspective view of a combustion pipe employed for a gas combustion arrangement using a circular stream according to an embodiment of the present invention, and Fig. 4 is a view showing an operational state of a gas combustion arrangement using a circular stream according to an embodiment of the present invention.

[19] Referring to Figs. 1 to 4, a gas combustion arrangement using a circular stream according to an embodiment of the present invention includes a housing 1, a heat generating part 2, a combustion pipe 3 and a supporting installation frame 4.

[20] The housing 1 forms a basic external frame of a gas combustion arrangement using a circular stream and has a cylindrical enclosure structure, as shown in Figs. 1 and 2. In this embodiment, preferably, a flange 11 provided with a joining hole P is integrally formed in a lower circumference of the cylindrical housing 1, as shown in Fig. 1. In Figs. 1 and 2, B and N denote a bolt and a nut, respectively. It is to be understood that the housing 1 may has a hexahedral shape, not the cylindrical shape, without departing from the spirit of the present invention.

[21] The heat generating part 2 has a spatial arrangement integrally formed inside the housing 1. The heat generating part 2 includes a plurality of electric heaters 21 provided radially in an outer side of the heat generating part 2, a burned gas outlet 22 formed in an upper middle portion of the heat generating part 2, and a dust outlet 23 formed in a lower middle portion of heat generating part 2, as shown in Figs. 1 and 2.

[22] The combustion pipe 3, which is a core component of the gas combustion arrangement of the present invention, leads gas discharged from an incinerator (not shown) into the heat generating part 2. Preferably, the combustion pipe 3 has a wiring structure formed by rolling a steel pipe having a predetermined diameter into a coil shape, as shown in Figs. 1 to 3.

[23] As shown in Fig. 3, a discharge pipe 31 is formed at one end of the coil-shaped combustion pipe 3.

[24] The supporting installation frame 4 is a supporting member allowing the housing 1 to be stably installed and facilitating maintenance and repair in the presence of abnormality of the gas combustion arrangement. The supporting installation frame 4 has a disk- shaped joint guide flange 4 as a basic element. Preferably, a hopper-shaped auxiliary outlet 42 is integrally formed at a middle portion of the joint guide flange 4.

[25] The gas combustion arrangement as constructed above burns gas discharged from the incinerator and introduced into the gas combustion arrangement through the combustion pipe 3 of high temperature. The burning process of the gas combustion arrangement has three burning phases. Specifically, a first burning phase is conducted when the discharged gas introduced into the heat generating part 2 through the combustion pipe heated by electric heater 21 is burned through contact with the internal surface of the combustion pipe 3. A second burning phase is conducted when the gas discharged from the combustion pipe 3 is burned through contact with an adiabatic wall and the heater 21 of the heat generating part 2. A third burning phase is conducted when the gas discharged from the combustion pipe 3 is burned with direct contact with an external surface of the combustion pipe of high temperature in the course of being discharged to the outside of the gas combustion arrangement while rotating by a circular stream due to a centrifugal force.

[26] The gas burned in the combustion arrangement is discharged through the burned gas outlet 22, and residual alien substances such as dust generated when the gas is burned are discharged to the outside through the dust outlet 23.

[27] As described above, the gas discharged from the incinerator can be effectively burned through contact with the internal surface of the combustion pipe 3 of high temperature when the gas passes through the coil-shaped combustion pipe 3 and forms a circular stream inside the combustion pipe 3, as shown in Fig. 3.

[28] As the gas is introduced into the heat generating part 2, a circular stream is generated inside the heat generating part 2 by a discharge pressure action, as shown in Fig. 4. Such a circular stream prolongs stay of the gas inside the heat generating part 2, thereby burning the gas more effectively. [29] Moreover, the discharged gas introduced through the coil-shaped combustion pipe 3 can be more efficiently burned by increase of contact area with the internal side of the heat generating part 2 (contact of the gas introduced through the combustion pipe with the internal surface of the heated combustion pipe 3, as shown in Fig. 4) according to the installed combustion pipe 3, in addition to the prolongation of stay of the gas due to the circular stream..

[30] The supporting installation frame 4 allows the housing 1 to be stably installed and facilitating maintenance and repair in the presence of abnormality of the gas combustion arrangement having an optionally detachable structure or when the gas combustion arrangement need to be cleaned.

[31] Fig. 5 is a configurational view of a heat insulating part of a gas combustion arrangement using a circular stream according to an embodiment of the present invention. Referring to Fig. 5, the gas combustion arrangement further includes a heat insulating part 6 which is provided inside the heat generating part 2 and is partitioned by an adiabatic wall 5 provided at an inner circumference of the heat generating part 2.

[32] The heat insulating part 6 provided inside the heat generating part 2 prevents combustion heat of the heat generating part 2 from radiating in the air through the housing 1 when the gas is burned, thereby increasing the heat efficiency.

[33] Although a few embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. Industrial Applicability

[34] As apparent from the above description, a gas combustion arrangement using a circular stream according to the present invention has an advantage of maximizing a combustion efficiency of gas introduced from an incinerator through a coil-shaped heated combustion pipe by generating a circular stream inside the gas combustion arrangement to prolong stay of discharged gas inside the gas combustion arrangement.

[35] In a gas combustion arrangement using a circular stream according to the present invention, an efficient first burning phase is conducted when the gas discharged from an incinerator directly and introduced into the combustion arrangement through a coil- shape combustion pipe contacts with the internal surface of the heated combustion pipe while rotating inside the combustion pipe.

[36] In addition, in a gas combustion arrangement using a circular stream according to the present invention, a second burning phase is conducted when the gas introduced into the combustion arrangement through the coiled shaped combustion pipe directly contacts with an adiabatic wall and the heater inside the combustion arrangement while flowing round due to a centrifugal force, and a third burning phase is conducted when the gas directly contacts with an external surface of the heated combustion pipe.

[37] In addition to the prolongation of stay of gas inside the heated combustion arrangement, a gas combustion arrangement using a circular stream according to the present invention has an advantage of reduction of apparatus installation costs without requiring any purifier, as well as prevention of environmental pollution, since the discharged gas can be fully burned through the first to third burning phases.

[38] Furthermore, a gas combustion arrangement using a circular stream according to the present invention has an advantage in that a base of the combustion arrangement can be attached/detached to/from an housing of the combustion arrangement, and hence, when the base is detached from the housing, the interior of the combustion arrangement is revealed to facilitate repairing or cleaning the combustion arrangement.

Claims

[1] A gas combustion arrangement using a circular stream for burning gas discharged from an incinerator, comprising: a plurality of electric heaters; a burned gas outlet and a dust outlet provided at an upper portion and a lower portion of the gas combustion arrangement; and a combustion pipe provided adjacent to the electric heaters, the combustion pipe being drawn from the upper side of the combustion arrangement and being rolled downward, the combustion pipe having a coil shape, and the combustion pipe including a discharge pipe having a lower end portion opened.

[2] The gas combustion arrangement according to claim 1, wherein the electric heaters are radially provided in an inner circumference of the gas combustion arrangement.

[3] A gas combustion arrangement using a circular stream, comprising a housing, a heat generating part having an electric heater, a burned gas outlet and a dust outlet provided at an upper side and a lower side of the heat generating part, wherein the heat generating part includes a combustion pipe having a wiring structure rolled into a coil shape, the combustion pipe including a discharge pipe formed at one end portion of the combustion pipe, and wherein the housing includes a flange having a joining hole in a lower circumference of the housing, the housing being combined to a supporting installation frame using the flange as joining means.

[4] The gas combustion arrangement according to claim 3, wherein the heat generating part further includes a heat insulating part provided at an inner circumference of the heat generating part.

[5] The gas combustion arrangement according to claim 3, wherein the supporting installation frame includes a disk- shaped joint guide flange and hopper-shaped auxiliary outlet 42 integrally formed at a middle portion of the joint guide flange.