CN111828955A

CN111828955A - Repeated combustion furnace

Info

Publication number: CN111828955A
Application number: CN201910317364.5A
Authority: CN
Inventors: 姚舜; 姚志勇; 姚志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-14
Filing date: 2019-04-14
Publication date: 2020-10-27

Abstract

A recombustion furnace. The present invention belongs to the field of combustion furnace, and is suitable for all solid combustion material combustion furnaces, such as civil boiler and industrial boiler, steel-making furnace, refuse incinerator, power plant combustion furnace, ore calcining furnace, cement calcining furnace, etc. At present, the smoke and dust repeated combustion technology of the existing combustion furnace introduces the smoke and dust generated by the combustion furnace into a second combustion chamber for combustion, so that the temperature of the second combustion chamber is lower, the repeated combustion of the smoke and dust is not facilitated, and an additional device is needed for waste heat utilization. The invention is characterized in that a repeated combustion chamber is arranged in a combustion furnace, multi-smoke dust generated in the combustion furnace is directly introduced into the repeated combustion chamber, and the combustion furnace is utilized to heat high temperature generated in the repeated combustion chamber, so that the multi-smoke dust is directly burnt in the repeated combustion chamber to be clean gas. The invention can be burnt cleanly repeatedly, and does not need to be provided with a special recovery device for the waste heat of repeated combustion, and can be finished by additionally arranging a repeated combustion device on the basis of the existing combustion furnace under most conditions.

Description

Repeated combustion furnace

Field of the invention

The invention belongs to the field of combustion furnaces, and particularly relates to a repeated combustion furnace which is suitable for combustion furnaces of all solid combustion products, such as civil boilers and industrial boilers, steel making furnaces, garbage incinerators, power plant combustion furnaces, ore calcining furnaces, cement calcining furnaces and the like.

Background

At present, the smoke and dust repeated combustion technology of the existing combustion furnace introduces smoke and dust generated by the combustion furnace into a second combustion chamber for combustion, and the arrangement is that the temperature of the second combustion chamber is lower, which is not beneficial to repeated combustion of smoke and dust, and the waste heat utilization also needs an additional device, so that the equipment is complex, the cost is high, the efficiency is low, and the popularization is not facilitated.

Disclosure of Invention

The invention is characterized in that a repeated combustion chamber is arranged in a combustion furnace, multi-smoke dust generated in the combustion furnace is directly introduced into the repeated combustion chamber, the combustion furnace is used for heating high temperature generated in the repeated combustion chamber, the multi-smoke dust is directly burnt in the repeated combustion chamber to be clean gas, and the clean gas is discharged from a chimney. The invention can repeatedly burn the multi-smoke dust generated in the combustion furnace, and does not need to specially arrange a recovery device for the waste heat of repeated combustion, thereby not only achieving the highest purification efficiency of the dust, but also achieving the highest utilization of the heat efficiency, and having low cost and simple structure. In most cases, the method can be completed by additionally arranging a repeated combustion device on the basis of the existing combustion furnace.

The specific technical scheme adopted for realizing the invention is that a repeated combustion chamber is arranged in the main combustion chamber, the repeated combustion chamber is communicated with the gas of the main combustion chamber, a chimney is arranged at the upper part of the repeated combustion chamber, and the chimney penetrates through the top of the combustion furnace and extends out of the furnace; the repeated combustion chamber is relative closed cavity, the heat conduction locular wall of repeated combustion chamber is made for the heat conduction material, in the leading-in repeated combustion chamber of the many cigarette smoke and dust that the thing produced of burning in the burning chamber, the burning of.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a reheat furnace in which multi-smoke soot is passed out of the furnace through a flue tube and then introduced back into the furnace and into a reheat chamber.

FIG. 2 is a schematic view of a repeating combustion chamber.

FIG. 3 is a schematic diagram of the structure of the repeating combustion chamber with the heat conducting device in a special-shaped structure.

FIG. 4 is a schematic view of the structure of a repeating combustion chamber with a heat conducting device in a regular-hole multi-channel structure.

FIG. 5 is a schematic view of a furnace in which the soot is directly fed from the primary combustion chamber through the soot inlet into the repeating combustion chamber.

In the figure, 1, a combustion furnace, 2, a furnace door, 3, a gas pipeline, 4, a fan, 5, a furnace bar, 6, a main combustion chamber, 7, a repeating combustion chamber, 8, a chimney, 9, a heat conducting chamber wall, 10, a main combustor, 11, multi-smoke dust, 12, clean gas, 13, a smoke inlet, 14, a smoke pipe, 15, a liquid pipeline, 16, a liquid fuel chamber, 17, liquid fuel, 18, an ignition device, 19 and a heat conducting device are arranged.

Detailed Description

In the figure, the multi-smoke fumes 11 generated by the main combustion substance 10 in the main combustion chamber 6 are directly introduced from the main combustion chamber 6 into the repeating combustion chamber 7 through the fume inlet 13 of the repeating combustion chamber 7 by the gas pressure difference.

The multi-smoke 11 generated by the main combustion substance 10 in the main combustion chamber 6 is led out of the furnace through a smoke pipe 14, then is led into the furnace from the outside of the furnace, and is led into the repeated combustion chamber 7 through a smoke inlet 13 of the repeated combustion chamber 7, and a fan 4 is connected in series on the smoke pipe outside the furnace.

The repeated combustion chamber 7 is communicated with the fan 4 through the gas pipeline 3, the fan 4 is arranged outside the furnace, and the fan 4 replenishes air into the repeated combustion chamber 7 through the gas pipeline 3.

The repeated combustion chamber 7 is communicated with a liquid fuel chamber 16 through a liquid pipeline 15, still liquid fuel 17 is arranged in the liquid fuel chamber 16, the liquid fuel 17 enters the repeated combustion chamber 7 through the liquid pipeline 15 to be combusted, the temperature in the repeated combustion chamber 7 is increased, and the multi-smoke 11 can be combusted completely.

An ignition device 18 is arranged in the repeated combustion chamber, the ignition device 18 is used for high-voltage electronic ignition, the head part of the ignition device 18 extends into the repeated combustion chamber 7, the tail part of the ignition device 18 is arranged outside the furnace, and the ignition device 18 ignites smoke dust entering the repeated combustion chamber 7.

The heat conducting device 19 is arranged in the repeated combustion chamber 7, the heat conducting device 19 is made of heat conducting materials capable of increasing the surface area of the inner wall of the repeated combustion chamber 7, at least one surface of the heat conducting device 19 is tightly attached to the wall of the repeated combustion chamber 7, the surface of the heat conducting device 19 is in any geometric shape capable of increasing the surface area, and the purpose is to increase the contact area of the multi-smoke dust 11 and the surface of the repeated combustion chamber 7 so as to be beneficial to heat conduction.

In fig. 1, a furnace door 2 is arranged on a combustion furnace 1, the combustion furnace 1 is communicated with a fan 4 through a gas pipeline 3, the fan 4 introduces air into the combustion furnace 1 through the gas pipeline 3, and a main combustion chamber 6 is formed between a furnace bar 5 of the combustion furnace 1 and the furnace top. A repeated combustion chamber 7 is arranged in the main combustion chamber 6, the repeated combustion chamber 7 is in gas communication with the main combustion chamber 6, a chimney 8 is arranged at the upper part of the repeated combustion chamber 7, and the chimney 8 penetrates through the top of the combustion furnace and extends out of the furnace; the repeated combustion chamber 7 is the cavity closed relatively, the heat conduction chamber wall 9 of repeated combustion chamber 7 is made for the heat conduction material, the leading-in repeated combustion chamber 7 of the many cigarette smoke and dust 11 that the thing 10 produced of burning in the chamber 6, the burning of the thing 10 of burning in the chamber 6 produces the heat, the heat of burning chamber 6 will repeat the combustion chamber 7 heating, the high temperature heating that is gone into to the repeated combustion chamber 7 from burning chamber 6 in the many cigarette smoke and dust 11 of burning in the chamber 7 by repeating the combustion chamber 7 is above the ignition point and burning, after the many cigarette smoke and dust 11 repeated burning in the repeated combustion chamber 7, become clean gas 12, clean gas 12 discharges from chimney 8.

In FIG. 2, the repeating combustion chamber 7 is in gas communication with the main combustion chamber 6, and a chimney 8 is arranged at the upper part of the repeating combustion chamber 7, and the chimney 8 penetrates through the top of the combustion furnace and extends out of the furnace; the repeated combustion chamber 7 is a relatively closed chamber, the heat conducting chamber wall 9 of the repeated combustion chamber 7 is made of heat conducting materials, the multi-smoke dust 11 is guided into the repeated combustion chamber 7, the multi-smoke dust 11 guided into the repeated combustion chamber 7 from the main combustion chamber 6 is heated to a temperature higher than the ignition point by the high temperature in the repeated combustion chamber 7 to be combusted, the multi-smoke dust 11 in the repeated combustion chamber 7 is changed into clean gas 12 after being repeatedly combusted, and the clean gas 12 is discharged from the chimney 8.

In fig. 3, fig. 3 is the same principle as fig. 2, except that a special-shaped heat conducting device 19 is added in fig. 3, the heat conducting device 19 is made of a heat conducting material capable of increasing the surface area of the inner wall of the repeating combustion chamber 7, at least one side of the heat conducting device 19 is tightly attached to the wall of the repeating combustion chamber 7, and the surface of the heat conducting device 19 is any geometric shape capable of increasing the surface area thereof, so as to increase the contact area of the soot 11 and the surface of the repeating combustion chamber 7 to facilitate heat conduction.

In fig. 4, the principle of fig. 4 is substantially the same as that of fig. 3, except that the heat transfer device 19 in fig. 4 has a repeating combustion chamber structure with a regular porous multi-path structure, and after entering the repeating combustion chamber 7, the multi-smoke soot is divided into multiple paths to reach the upper end of the repeating combustion chamber 7 and be ignited.

In fig. 5, fig. 5 is similar in principle to fig. 1, except that in fig. 5, the multi-smoke soot 11 is introduced directly from the main combustion chamber 6 into the repeating combustion chamber 7 through the soot inlet 13 by the pressure difference between the main combustion chamber 6 and the repeating combustion chamber 7.

Claims

1. A repeated combustion furnace is characterized in that a repeated combustion chamber (7) is arranged in the main combustion chamber (6), the repeated combustion chamber (7) is in gas communication with the main combustion chamber (6), a chimney (8) is arranged at the upper part of the repeated combustion chamber (7), and the chimney (8) penetrates through the top of the combustion furnace and extends out of the furnace; the repeated combustion chamber (7) is a relatively closed chamber, a heat conducting chamber wall (9) of the repeated combustion chamber (7) is made of a heat conducting material, multi-smoke dust (11) generated by main combustion objects (10) in the main combustion chamber (6) is led into the repeated combustion chamber (7), the main combustion objects (10) in the main combustion chamber (6) are combusted to generate heat, the repeated combustion chamber (7) is heated by the heat of the main combustion chamber (6), the multi-smoke dust (11) led into the repeated combustion chamber (7) from the main combustion chamber (6) is heated to a burning point by high temperature in the repeated combustion chamber (7) and is combusted, after the multi-smoke dust (11) in the repeated combustion chamber (7) is repeatedly combusted, the multi-smoke dust (11) is changed into clean gas (12), and the clean gas (12) is discharged from a chimney (8).

2. A reheat furnace as claimed in claim 1 wherein the multi-smoke soot (11) generated by the main burner (10) in the main burner chamber (6) is directed by gas pressure differential from the main burner chamber (6) into the reheat chamber (7) directly through the soot inlet (13) of the reheat chamber (7).

3. A reheat furnace as claimed in claim 1 wherein the multi-smoke fumes (11) from the main burners (10) in the main combustion chamber (6) are directed out of the furnace through a flue (14) and into the furnace from outside the furnace and into the reheat chamber (7) through a fume inlet (13) in the reheat chamber (7), the flue outside the furnace being connected in series to a fan (4).

4. A burner according to claim 1, characterized in that the reburning chamber (7) is connected to the fan (4) via the gas line (3), the fan (4) is arranged outside the furnace, and the fan (4) supplies air to the reburning chamber (7) via the gas line (3).

5. A repetitive combustion furnace as defined in claim 1, characterized in that the repetitive combustion chamber (7) is connected to the liquid fuel chamber (16) through a liquid conduit (15), the liquid fuel chamber (16) contains still liquid fuel (17), the liquid fuel (17) enters the repetitive combustion chamber (7) through the liquid conduit (15) for combustion, increasing the temperature in the repetitive combustion chamber (7) and facilitating the clean combustion of the smoky smoke (11).

6. A burner as claimed in claim 1, characterized in that the said recombustion chamber has an ignition device (18), the ignition device (18) is a high voltage electronic ignition, the head of the ignition device (18) extends into the recombustion chamber (7), the tail of the ignition device (18) is arranged outside the furnace, and the ignition device (18) ignites the smoke entering the recombustion chamber (7).

7. A burner as claimed in claim 1, characterized in that the recombustion chamber (7) is provided with heat conducting means (19), the heat conducting means (19) being made of a heat conducting material which increases the surface area of the inner wall of the recombustion chamber (7), at least one side of the heat conducting means (19) being adapted to abut against the wall of the recombustion chamber (7), the surface of the heat conducting means (19) being of any geometry which increases its surface area in order to increase the contact area of the smoky smoke (11) with the surface of the recombustion chamber (7) in order to facilitate heat conduction.