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Combustion apparatus and combustion control method for combustion apparatus

A combustion device and fuel control technology, which is applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of uneven temperature in the main combustion chamber, insufficient combustion of fuel, and temperature rise in the main combustion chamber, so as to improve the efficiency of heat recovery , Improve energy saving effect and stabilize combustion performance

Active Publication Date: 2014-08-06
CHUGAI RO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the combustion device disclosed in Patent Document 2, in the primary combustion chamber, the primary air guided through the primary air supply path is supplied to the surroundings of the fuel sprayed from the fuel nozzle for primary combustion, so it is difficult to Rapidly and uniformly raise the temperature of the entire main combustion chamber to cause temperature unevenness in the main combustion chamber, and inject secondary air from the vicinity of the primary combustion chamber to the main combustion chamber through the secondary air supply path as described above to carry out In the case of combustion, the above-mentioned fuel is not fully combusted in a part with a relatively low temperature, so there is a problem that unburned fuel is likely to remain in the exhaust gas and combustion is unstable.

Method used

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  • Combustion apparatus and combustion control method for combustion apparatus
  • Combustion apparatus and combustion control method for combustion apparatus
  • Combustion apparatus and combustion control method for combustion apparatus

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Experimental program
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Effect test

Embodiment approach 1

[0067] In the combustion device A1 of Embodiment 1, as figure 1 As shown, the fuel guide pipe 12 for guiding the fuel is arranged on the inner peripheral side of the primary air guide pipe 11 for guiding the primary combustion air, and the front end side of the above-mentioned primary air guide pipe 11 and fuel guide pipe 12 is provided for The primary combustion chamber 13 where the primary combustion air guided through the primary air guide pipe 11 and the fuel guided through the fuel guide pipe 12 burn, and at a position before the primary combustion air is guided into the primary combustion chamber 13, A stabilizer 14 is provided between the primary air guide pipe 11 and the fuel guide chamber 12 , and a spark plug 15 passing through the primary air guide pipe 11 and extending to the primary combustion chamber 13 is provided.

[0068] In addition, the primary combustion chamber 13 communicates with the interior 1 a of the furnace 1 through the first nozzle portion 16 , and...

Embodiment approach 2

[0091] In the combustion device A2 of Embodiment 2, as Figure 5 As shown, set the fuel from figure 1 The fuel supply device 30 in the combustion device A1 according to Embodiment 1 shown is a preliminary air supply path in which the fuel is supplied with pre-combustion air from the combustion air supply device 40 before being supplied to the fuel guide pipe 12 via the fuel regulating valve 31 , and a preliminary air regulating valve (preparatory air control element) 44 for controlling the supply of air for preliminary combustion is provided on the preliminary air supply path 43, and the above-mentioned spark plug 15 is arranged in the above-mentioned fuel guide pipe 12, in addition , using the figure 1 Combustion device A1 of Embodiment 1 shown has the same structure. In addition, about Figure 6 ~ Figure 9The opening and closing of the respective valves 31, 41, 42, 44, and 51 are the same as in Embodiment 1. The open state is indicated by a hollow arrow, and the closed st...

Embodiment approach 3

[0105] In the combustion device A3 of Embodiment 3, as Figure 10 shown in figure 1 In the combustion device A1 of Embodiment 1 shown, a preliminary air guide pipe (preparatory air supply element) 17 having a length longer than the fuel guide pipe 12 is provided between the fuel guide pipe 12 and the primary air guide pipe 11, and the preliminary air The inside of the guide pipe 17 is formed with a premixing portion 17a for mixing fuel and pre-combustion air, and a pre-air supply path (preparation air supply path) for supplying pre-combustion air from the above-mentioned combustion air supply device 40 to the above-mentioned pre-air guide pipe 17 is provided. Air supply element) 43, and a preliminary air regulating valve (preparatory air control element) 44 for controlling the supply of air for preliminary combustion is provided in the preliminary air supply path 43. figure 1 Combustion device A1 of Embodiment 1 shown has the same structure. In addition, about Figure 11 to...

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Abstract

A combustion apparatus (A1 to A3) is provided. The primary combustion air guided by a primary air guide pipe (11) and the fuel guided to a fuel guide pipe (12) are combusted in a primary combustion chamber (13). The combustion emissions, after the combustion, are jetted from a first nozzle part (16) to the inside (1a) of a furnace (1). Secondary combustion air in a heat storage chamber (20), after being heated, is jetted to the inside of the furnace through a secondary air guide pipe (22) and through a second nozzle part (23) near the first nozzle part, and the first nozzle part is shrinked toward the inside of the furnace, and amounts of the fuel in the fuel guide pipe, the primary combustion air in the primary air guide pipe and the secondary combustion air in the secondary air guide pipe are controlled in a manner of corresponding to the temperature of the inside of the furnace.

Description

technical field [0001] The invention relates to a combustion device and a combustion control method of the combustion device. In particular, when used in a combustion device as described below, it has the following characteristics: the combustion state can be appropriately controlled according to the temperature inside the furnace, and stable combustion can be obtained from a low temperature range to a high temperature range. Combustion performance, and can suppress the generation of NOx in the high-temperature region, wherein, the above-mentioned combustion device includes: a primary air guide pipe that guides the air for primary combustion; guide pipe; a primary combustion chamber for combusting the primary combustion air guided through the primary air guide pipe and the fuel guided to the fuel guide pipe; the first nozzle part communicating the primary combustion chamber with the interior of the furnace; a secondary air guide pipe for guiding the heated secondary combustio...

Claims

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Application Information

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IPC IPC(8): F23D14/00F23D14/66F23D14/60
CPCY02E20/34F23C7/02F23D14/62F23D14/84F23L9/02F23L15/02
Inventor 河本祐作北村和也片山智树
Owner CHUGAI RO CO LTD