JP3937307B2 - Combustion chamber structure in thermal storage combustion equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to combustion in a heat storage combustion apparatus in which a heat storage chamber serving as an untreated gas supply passage and a treated gas exhaust passage is partitioned in parallel with a partition wall and the upper portions of the heat storage chambers are connected in communication by a common combustion chamber. It relates to the room structure.
[0002]
[Prior art]
Conventionally, one method for improving gas decomposition efficiency in the above-described regenerative combustion apparatus is how long the combustion temperature range is taken. As a countermeasure for this, a method of enlarging the residence time by increasing the volume of the combustion chamber has been adopted.
[0003]
[Problems to be solved by the invention]
However, increasing the volume of the combustion chamber results in an increase in the size of the entire apparatus, which alone increases the manufacturing cost. Further, in the heat storage combustion apparatus, the temperature in the combustion chamber is raised by using a burner, so that heat is generated from one place where the burner is present, so that the temperature distribution is easily made in the combustion chamber. If the temperature distribution is made, the decomposition efficiency is lowered and it becomes difficult to control the temperature at which location.
[0004]
The present invention has been made in view of the above problems, and can extend the passage time of gas in the combustion chamber and eliminate uneven temperature distribution. As a result, gas decomposition efficiency can be improved. An object of the present invention is to provide a combustion chamber structure in a heat storage combustion apparatus that can reduce the manufacturing cost and save the space of the apparatus.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the combustion chamber structure in the heat storage combustion apparatus of the present invention has a partition wall for partitioning the heat storage chamber serving as the supply passage for the untreated gas and the exhaust passage for the treatment gas in parallel, and the upper portion of each combustion chamber. Combustion chamber structure in a heat storage combustion apparatus connected in communication by a common combustion chamber, and a set of four partitions that form a substantially vertical state above each partition wall in the combustion chamber and partition the combustion chamber to the left and right The two stirring plates facing the front-rear direction of the pair of stirring plates cross each other at the center when viewed from the front, and the two upper portions and the lower Each part forms an angle of 30 to 90 degrees, and the two stirring plates heading in the up-down direction intersect each other at the center when viewed from below, and the two stirring plates heading in the front-rear direction Two left and right parts that do not exist Respectively and forming an angle of 50 to 150 degrees.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram of a partly cutout of a heat storage combustion apparatus according to the present invention, and FIG. FIG. 3 is a detailed view of the stirring plate attached.
[0007]
The heat storage chambers 2, 2, 2 are erected in parallel by partitioning left and right by the partition walls 1, 1, and the heat storage bodies 3 are filled therein. A common combustion chamber 4 provided with a burner (not shown) is connected to the upper part of each of the heat storage chambers 2, 2, 2, and an untreated gas supply damper 5 is connected to the lower part of each of the heat storage chambers 2, 2, 2. And the exhaust damper 6 of processed gas is connected, respectively.
[0008]
Also, above each partition wall 1 in the combustion chamber 4 , as shown in FIG. 1, a set of four stirring plates 7, 7 , 7 that form a substantially vertical state and partition the combustion chamber 4 left and right. , 7 are fixedly arranged in four directions (up and down, front and back ), and the set of stirring plates 7, 7, 7, and 7 are respectively attached at angles.
[0009]
In addition, as shown in FIG. 3, the mounting angle of a set of stirring plates 7, 7, 7, and 7 is as indicated by arrows A-A (C) , B-B (B) , and C-C ( is the angle R1~R3 which is indicated by two). These angles are for stirring the gas passing through the combustion chamber 4 efficiently, the test and the simulation were repeated, and the following ranges were found to be suitable. That is, R1: 15 to 45 degrees, R2: 15 to 45 degrees, and R3: 50 to 150 degrees were suitable.
In other words, in FIG. 1, the two stirring plates 7, 7 heading in the front-rear direction among the pair of stirring plates 7, 7, 7, 7 cross each other at the center when viewed from the front, and The upper part and the lower part each form an angle of 30 to 90 degrees, and the two stirring plates 7 and 7 directed in the vertical direction intersect with each other at the center when viewed from below, and proceed in the front-rear direction. Two left portions and right portions where the two stirring plates 7 and 7 do not exist each form an angle of 50 to 150 degrees.
[0010]
In this configuration, untreated gas is introduced from below one of the heat storage chambers 2, 2, 2 by opening / closing control of each supply damper 5 and each exhaust damper 6 and preheated by the heat storage body 3. After that, it is supplied to the combustion chamber 4 for heat treatment, flows into the heat storage body 3 from above any one of the remaining heat storage chambers 2 and 2 and is exhausted through the exhaust damper 6 below.
[0011]
In addition, the gas introduced into the combustion chamber 4 as described above is efficiently stirred by passing between the four stirring plates 7, 7, 7, and 7, so that the temperature distribution is difficult to occur and the gas is retained. It turns out that the time is also long.
[0012]
【The invention's effect】
As apparent from the above description, in the present invention, in the combustion chamber, 4 to 8 stirring plates for partitioning the combustion chamber left and right are fixedly arranged in four directions above the partition walls, and each stirring plate is disposed. Since the combustion chamber structure is mounted at an angle, the gas flow is efficiently stirred, the temperature distribution becomes difficult, the residence time of the gas is prolonged, the gas decomposition efficiency is greatly improved, and the large combustion chamber is not required. It has an excellent effect such as helping to reduce the manufacturing cost.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a partly cutout of a heat storage combustion apparatus according to the present invention.
FIG. 2 is a right side view of FIG.
FIGS. 3A and 3B are detailed views (a), (b), (c), and (d) showing the installation of the stirring plate in the combustion chamber.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Partition wall 2 Thermal storage chamber 3 Thermal storage body 4 Combustion chamber 5 Supply damper 6 Exhaust damper 7 Stirring plate

Claims (1)

A combustion chamber structure in a heat storage combustion apparatus in which a heat storage chamber serving as an untreated gas supply passage and a processing gas exhaust passage is partitioned in parallel with a partition wall and the upper part of each combustion chamber is connected in communication with a common combustion chamber,
Above each partition wall (1) in the combustion chamber (4), a set of four stirring plates (7, 7, 7) that form a substantially vertical state and partition the combustion chamber (4) left and right. 7) are fixedly arranged in four directions, and the two stirring plates (7, 7) heading in the front-rear direction among the pair of stirring plates (7, 7, 7, 7) are viewed from the front. The two upper and lower portions intersect each other at the center to form an angle of 30 to 90 degrees, and the two stirring plates (7, 7) directed in the vertical direction are viewed from below. Two left portions and right portions that do not have the two stirring plates (7, 7) that cross each other at the center and go in the front-rear direction form an angle of 50 to 150 degrees, respectively. Combustion chamber structure in a heat storage combustion device.

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