201202632 六、發明說明： 本申請案是根據曰本專利申請案2010-127570號主張 優先權。 【發明所屬之技術領域】 本發明是關於一種蓄熱燃燒式熱處理爐之燃燒控制 方法，該蓄熱燃燒式熱處理爐是設有至少一對蓄熱式燃燒 器（regenerative burner)，該蓄熱式燃燒器具有：具備燃料 氣體供應管的燃燒器部、用來收容蓄熱材的蓄熱室、將燃 燒用空氣供應至蓄熱室的空氣供應管、以及使燃燒廢氣從 蓄熱室排出的廢氣排出管，在一方的蓄熱式燃燒器中，從 空氣供應管通過蓄熱室將燃燒用空氣引導至燃燒器部，並 且從該燃燒器部的燃料氣體供應管喷射燃料氣體而進行燃 燒動作，另一方面，在另一方的蓄熱式燃燒器中，進行將 燃燒廢氣引導至上述蓄熱室並將燃燒廢氣的熱蓄積在蓄熱 材再從廢氣排出管排出的蓄熱動作，並且交互切換該一對 蓄熱式燃燒器的上述燃燒動作及蓄熱動作。尤其，其特徵 在於：在從供應一定量之燃料氣體的燃料氣體供應裝置將 燃料氣體供應至各蓄熱式燃燒器之燃料氣體供應管的蓄熱 燃燒式熱處理爐中，要切換一對蓄熱式燃燒器之燃燒動作 及蓄熱動作時，可抑制蓄熱動作中的蓄熱式燃燒器之燃燒 動作開始時產生激烈的燃燒。 【先前技術】 以往’對被處理材進行熱處理時，是使用一種設有至 少一對蓄熱式燃燒器的蓄熱燃燒式熱處理爐，該蓄熱式燃201202632 VI. INSTRUCTIONS: This application claims priority from Japanese Patent Application No. 2010-127570. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control method for a regenerative combustion type heat treatment furnace, which is provided with at least one pair of regenerative burners, the regenerative burner having: a burner unit including a fuel gas supply pipe, a regenerator for accommodating the heat storage material, an air supply pipe for supplying combustion air to the regenerator, and an exhaust gas discharge pipe for discharging the combustion exhaust gas from the regenerator, and one of the regenerative types In the combustor, the combustion air is guided from the air supply pipe to the burner unit through the regenerator, and the fuel gas is injected from the fuel gas supply pipe of the burner unit to perform the combustion operation, and the other regenerative type. In the combustor, a heat storage operation of guiding the combustion exhaust gas to the regenerator and accumulating the heat of the combustion exhaust gas in the heat storage material and discharging it from the exhaust gas discharge pipe is performed, and the combustion operation and the heat storage operation of the pair of regenerative burners are alternately switched. . In particular, it is characterized in that a pair of regenerative burners are switched in a regenerative combustion type heat treatment furnace that supplies fuel gas from a fuel gas supply device that supplies a certain amount of fuel gas to a fuel gas supply pipe of each regenerative burner. In the combustion operation and the heat storage operation, it is possible to suppress the intense combustion at the start of the combustion operation of the regenerative burner during the heat storage operation. [Prior Art] Conventionally, when heat treatment is applied to a material to be treated, a regenerative combustion type heat treatment furnace provided with at least one pair of regenerative burners is used.
323052 S 201202632 燒器具有··具備燃料氣體供應管的燃燒器部、用來收容蓄 熱材的蓄熱室、將燃燒用空氣供應至蓄熱室的空氣供應 管、以及使燃燒廢氣從蓄熱室排出的廢氣排出管，在一方 的蓄熱式燃燒器中’從空氣供應管通過蓄熱室將燃燒用空 氣引導至燃燒器部’並且從該燃燒器部的燃料氣體供應管 喷射燃料氣體而進行燃燒動作，另一方面，在另一方的蓄 熱式燃燒器中’進行將燃燒廢氣引導至上述蓄熱室並將燃 燒廢氣的熱蓄積在蓄歸再從廢氣排出管排出的蓄熱動 作’並且交互切換該_對蓄熱式燃燒器的上述燃燒動作及 蓄熱動作。 而且’上述蓄熱燃燒式熱處理爐中，$了連續對被處 =里材進订熱處理’也❹—種在上述熱處理賴置複數對 二熱^燃燒器，並且在錢蓄熱式燃燒器中使切換燃燒動 作及蓄熱動作的時間點不同的構造。 而且 廄$ μ、+、^上述蓄熱燃燒式熱處理爐中要將燃料氣體供 式燃燒器的燃料氣體供應管時，一般是從 庙〜疋s ‘、，、料乳體的簡氣體供 應至各燃料氣體供應管。 將㈣孔體供 在此，在如上所述的蓄熱姆 換一對蓄熱式燃燒器之燃燒_ = = =中要交互 10-1δ517^^ 11-159744號公報所示，在燃燒動:艮^日本特開 使燃料氣體㈣管之轉_二Τ的畜熱式燃燒器 供應管之燃燒用空氣的供應，另^ 止之後’停止空 〜方面，在蓄熱動作中 323052 5 201202632 蓄熱式燃燒器中使空氣供應管之燃燒用空氣的供應開始之 後，再開始燃料氣體供應管之燃料氣體的供應，使其開始 燃燒。此外，已知也有如日本發明專利第3523903號公報 所示，在燃燒動作中的蓄熱式燃燒器中使燃料氣體及燃燒 用空氣之供應停止的同時，在蓄熱動作中的蓄熱式燃燒器 中開始燃料氣體及燃燒用空氣的供應，使其開始燃燒。 在此，上述各公報所示的發明中，蓄熱動作中的蓄熱 式燃燒器要開始燃燒時，在燃燒動作中的蓄熱式燃燒器 中，由於正停止來自上述燃料氣體供應裝置的燃燒氣體之 供應，因此在從燃料氣體供應裝置到蓄熱式燃燒器的燃料 氣體供應管内，會形成燃料氣體的氣壓比平常高的狀態， 蓄熱動作中的蓄熱式燃燒器要開始燃燒的當初，會從上述 燃料氣體供應裝置供應比平常更多量的燃料氣體並開始燃 燒。 因此，在這些各公報所示的發明中，在上述蓄熱動作 中的蓄熱式燃燒器之燃燒開始時會進行激烈的燃燒，並且 有蓄熱燃燒式熱處理爐内的壓力變化劇烈，或是產生不完 全燃燒，以致無法穩定地進行適當之燃燒的問題。尤其， 使用燃燒性差的氣體、例如使用丙院氣作為上述燃料氣體 的情況時，會因為燃燒不完全而產生黑煙（煤），因而有環 境上的問題，或是煤附著在被處理材以致無法適當進行熱 處理的問題。 【發明内容】 (發明所欲解決之課題） 6 S 323052 201202632 本愈明之課題在於m如下方式動作的蓄熱燃燒 式熱處理叙如上所述關題，讀蓄熱燃燒式減處理爐 係》又有至V肖蓄熱式燃燒器’該蓄熱式燃燒器具有：具 備燃料氣體供應管的燃燒器部、用來收容蓄熱材的蓄熱 至將燃燒用空氣供應至蓄熱室的空氣供應管、以及使燃 燒廢氣從蓄h排”廢氣排_，在—方的蓄熱式燃燒 器中’從工氣供應管通過蓄熱室將燃燒用空氣引導至燃燒 器並且從德燒器部的燃料氣體供應管喷射燃料氣體 而進行燃:^作’另—方面’在另—方的蓄熱式燃燒器中’ 進行將燃燒錢引導至上述Ϊ熱室並將燃燒廢氣的熱蓄積 在蓄熱材再從廢氣排出管排出的f熱動作，並Μ互切換 該-對蓄熱式職ϋ之上述賴動作及蓄熱動作。 亦即本發明之蓄熱燃燒式熱處理爐是從供應一定量 之燃料氣體的燃料氣體供應裝置將燃料氣體供應至各蓄熱 式燃燒器的燃料氣體供應管者，其特徵為：在要切換一對 蓄熱式燃燒裔之燃燒動作及蓄熱動作時，可抑制使蓄熱動 作中的蓄熱式燃燒器之燃燒動作開始時產生激烈的燃燒。 (用以解決課題之手段） 為了解決如上所述的課題，在本發明之蓄熱燃燒式熱 處理爐之燃燒控制方法中，該蓄熱燃燒式熱處理爐是設有 至少一對蓄熱式燃燒器，該蓄熱式燃燒器具有：具備燃料 氣體供應管的燃燒器部、用來收容蓄熱材的蓄熱室、將燃 燒用空氣供應至蓄熱室的空氣供應管、以及使燃燒廢氣從 蓄熱室排出的廢氣排出管，在一方的蓄熱式燃燒器中’從 7 323052 201202632 空氣供應管通過蓄熱室將燃燒用空氣引導至燃燒器部，並 且從該燃燒器部的燃料氣體供應管喷射燃料氣體而進行燃 燒動作，另一方面，在另一方的蓄熱式燃燒器中，進行將 燃燒廢氣引導至上述蓄熱室並將燃燒廢氣的熱蓄積在蓄熱 材並從廢氣排出管排出的蓄熱動作，並且交互切換該一對 蓄熱式燃燒器之上述燃燒動作及蓄熱動作’該燃燒控制方 法之特徵為：從供應一定量之燃料氣體的燃料氣體供應裝 置將燃料氣體供應至上述各蓄熱式燃燒器的燃料氣體供應 管’並且在要切換上述一對蓄熱式燃燒器之燃燒動作及蓄 熱動作時’在燃燒動作中的蓄熱式燃燒器中使來自燃料氣 體供應管之燃料氣體的供應以及來自空氣供應管之燃燒用 空氣的供應減少之前，在蓄熱動作中的蓄熱式燃燒器中， 從燃料氣體供應管及空氣供應管供應燃料氣體及燃燒用空 氣使其開始燃燒。 而且’如上所述在要切換一對蓄熱式燃燒器之燃燒動 作及蓄熱動作時，在燃燒動作中的蓄熱式燃燒器中，使來 自燃料氣體供應管之燃料氣體的供應以及來自空氣供應管 之燃燒用空氣的供應減少之前，在蓄熱動作中的蓄熱式燃 燒器中，從燃料氣體供應管及空氣供應管供應燃料氣體及 燃燒用空氣使其開始燃燒時，會在從供應一定量之燃料氣 體的燃料氣體供應裝置對燃燒動作中的蓄熱式燃燒器供應 有燃料氣體的狀態下，開始對蓄熱動作中的蓄熱式燃燒器 供應燃料氣體，因此供應至該蓄熱動作中之蓄熱式燃燒器 的燃料氣體的量會變少，因而在燃料氣體量少的狀態下開 323052323052 S 201202632 The burner includes a burner unit including a fuel gas supply pipe, a regenerator for accommodating the heat storage material, an air supply pipe for supplying combustion air to the regenerator, and exhaust gas for exhausting the combustion exhaust gas from the regenerator In one of the regenerative burners, the combustion air is guided from the air supply pipe to the burner portion through the regenerator, and the fuel gas is injected from the fuel gas supply pipe of the burner portion to perform the combustion operation. On the other hand, in the other regenerative burner, 'the combustion accumulating gas is guided to the regenerator and the heat of the combustion exhaust gas is accumulated in the heat storage operation that is discharged from the exhaust gas discharge pipe' and the regenerative combustion is alternately switched. The above combustion operation and heat storage operation of the device. Moreover, in the above-mentioned regenerative combustion type heat treatment furnace, $continuously is subjected to the heat treatment of the lining = lining, and the plurality of heat burners are placed in the heat treatment, and the switching is performed in the money regenerative burner. The structure of the combustion operation and the heat storage operation at different points in time. Moreover, when the fuel gas supply pipe of the fuel gas-fired burner is to be supplied in the above-mentioned regenerative combustion type heat treatment furnace of 廄$μ, +, ^, it is generally supplied from the temple to the 乳s, Fuel gas supply pipe. The (4) hole body is provided here, and in the combustion of the pair of regenerative burners as described above, the combustion is _ = = = in the interaction 10-1 δ 517 ^ ^ 11-159744, as shown in the publication, in the combustion: 艮 ^ Japan specializes in the supply of combustion air for the fuel gas (four) tube to the second-class livestock heating burner supply tube, and after the 'stop empty' aspect, in the heat storage operation 323052 5 201202632 regenerative burner After the supply of the combustion air of the air supply pipe is started, the supply of the fuel gas of the fuel gas supply pipe is started to start combustion. In addition, as shown in Japanese Laid-Open Patent Publication No. 3523903, the regenerative burner in the combustion operation stops the supply of the fuel gas and the combustion air, and starts in the regenerative burner during the heat storage operation. The supply of fuel gas and combustion air causes it to begin to burn. Here, in the invention described in each of the above publications, when the regenerative burner in the heat storage operation is to start combustion, the regenerative burner in the combustion operation is stopping the supply of the combustion gas from the fuel gas supply device. Therefore, in the fuel gas supply pipe from the fuel gas supply device to the regenerative burner, the gas pressure of the fuel gas is formed to be higher than usual, and the regenerative burner in the heat storage operation starts to burn from the fuel gas. The supply device supplies a larger amount of fuel gas than usual and begins to burn. Therefore, in the inventions shown in the respective publications, intense combustion is performed at the start of combustion of the regenerative burner in the heat storage operation, and the pressure in the regenerative combustion type heat treatment furnace is drastically changed or incompletely generated. Burning, so that the problem of proper combustion cannot be stably performed. In particular, when a gas having poor flammability, for example, a propylene gas is used as the fuel gas, black smoke (coal) is generated due to incomplete combustion, and thus there is an environmental problem, or coal adheres to the material to be treated. The problem of heat treatment cannot be properly performed. SUMMARY OF THE INVENTION (Problems to be Solved by the Invention) 6 S 323052 201202632 The problem of the present invention is that the regenerative combustion type heat treatment in which the following operation is performed is as described above, and the regenerative combustion type reduction furnace system is read to V. A regenerative burner includes a burner unit including a fuel gas supply pipe, a heat storage unit for accommodating the heat storage material, an air supply pipe for supplying combustion air to the regenerator, and a combustion exhaust gas. h row "exhaust gas exhaust_", in the regenerative burner in the side - from the gas supply pipe through the regenerator to the combustion air to the burner and from the fuel gas supply pipe of the German burner part to inject fuel gas for combustion : ^ as 'other aspects' in another regenerative burner' to conduct the heat of combustion to the above-mentioned heat chamber and accumulate the heat of the combustion exhaust gas in the heat storage material and then discharge from the exhaust gas discharge pipe, And switching between the above-mentioned heat-dissipating operation and the heat storage operation. That is, the regenerative combustion type heat treatment furnace of the present invention is supplied from a fuel gas supplying a certain amount of fuel gas. The device supplies the fuel gas to the fuel gas supply pipe of each of the regenerative burners, and is characterized in that the regenerative burner in the heat storage operation can be suppressed when the combustion operation and the heat storage operation of the pair of regenerative combustion persons are to be switched. In the combustion control method of the regenerative combustion type heat treatment furnace of the present invention, the regenerative combustion type heat treatment furnace is provided in order to solve the above problems. At least one pair of regenerative burners having a burner portion including a fuel gas supply pipe, a regenerator for accommodating the heat storage material, an air supply pipe for supplying combustion air to the regenerator, and causing combustion Exhaust gas exhaust pipe exhausted from the regenerator, in one of the regenerative burners, 'from 7 323052 201202632 air supply pipe through the regenerator to direct combustion air to the burner section, and the fuel gas supply pipe from the burner section The fuel gas is injected to perform the combustion operation, and on the other hand, in the other regenerative burner, The combustion exhaust gas is guided to the regenerator and accumulates heat of the combustion exhaust gas in the heat storage material and is discharged from the exhaust gas discharge pipe, and alternately switches the combustion operation and the heat storage operation of the pair of regenerative burners. It is characterized in that fuel gas is supplied from a fuel gas supply device that supplies a certain amount of fuel gas to the fuel gas supply pipe of each of the above-described regenerative burners, and when the combustion operation and the heat storage operation of the pair of regenerative burners are to be switched 'In the regenerative burner in the combustion operation, before the supply of the fuel gas from the fuel gas supply pipe and the supply of the combustion air from the air supply pipe are reduced, in the regenerative burner in the heat storage operation, the fuel gas The supply pipe and the air supply pipe supply the fuel gas and the combustion air to start combustion. Further, when the combustion operation and the heat storage operation of the pair of regenerative burners are to be switched as described above, in the regenerative burner in the combustion operation To supply fuel gas from the fuel gas supply pipe and from the air supply Before the supply of the combustion air is reduced, in the regenerative burner during the heat storage operation, when the fuel gas and the combustion air are supplied from the fuel gas supply pipe and the air supply pipe to start combustion, a certain amount is supplied from the supply. When the fuel gas supply device of the fuel gas supplies the fuel gas to the regenerative burner in the combustion operation, the fuel gas is supplied to the regenerative burner during the heat storage operation, so that the regenerative burner is supplied to the regenerative operation. The amount of fuel gas will be reduced, so that 323052 is opened in a state where the amount of fuel gas is small.
S 8 201202632 始燃燒。 在此，就上述蓄熱燃燒式熱處理爐而言，亦可使用設 置複數對蓄熱式燃燒II，並且在各對蓄熱式燃燒器中使切 換燃燒動作及蓄熱動作的時間點不同者。 又，在本發明之蓄熱燃燒式熱處理爐之燃燒控制方法 中在要切換- ff蓄熱式燃燒器之燃燒動作及蓄熱動作 時，最好在燃、燒動作中的蓄熱式燃燒器中，使燃料氣體供 應官之燃料氣體的供應以及^氣供應管之燃燒用空氣的供 應停止之後，使燃燒廢氣從廢氣排出管排出，並且在蓄熱 動作中的蓄熱式燃燒器中，使從廢氣排出管排出燃燒廢氣 的操作停止之後，再開始燃料氣體供應管之燃料氣體的供 應以及空氣供應管之燃燒用空氣的供應。如此一來，在要 切換燃燒動作及蓄熱動作時，可防止在利用切換閥進行的 切換動作中’從空氣供應管被引導至蓄熱室的燃燒用空氣 的一部分沒有行進至蓄熱室而從旁經過，並且通過廢氣排 出管而排出。 (發明之效果） 本發明之蓄熱燃燒式熱處理爐之燃燒控制方法中，如 上所述要切換一對蓄熱式燃燒器之燃燒動作及蓄熱動作 時’是在燃燒動作中的蓄熱式燃燒器中使來自燃料氣體供 應管之燃料氣體的供應以及來自空氣供應管之燃燒用氣體 的供應減少之前’在蓄熱動作中的蓄熱式燃燒器中，從燃 料氣體供應纽空氣供應管供應燃料氣體及燃燒用空氣使 其開㈣’ ϋ此㈣料氣體供絲置對蓄熱式燃燒器供 9 323052 201202632 應燃料氣體的燃料氣體供應管内的燃料氣體之壓力會降 低，如上所述對蓄熱動作中的蓄熱式燃燒器供應燃料氣體 使其開始燃燒時，供應至該蓄熱動作中的蓄熱式燃燒器的 燃料氣體量會變少，而可抑制開始燃燒動作之當初產生激 烈的燃燒。 結果，根據本發明之蓄熱燃燒式熱處理爐之燃燒控制 方法，在要切換一對蓄熱式燃燒器之燃燒動作及蓄熱動作 時，可抑制蓄熱燃燒式熱處理爐内的壓力劇烈變化，或產 生不完全燃燒，而可穩定地進行適當的燃燒。尤其，在使 用燃燒性差的丙烷氣等作為上述燃料氣體的情況時，也可 防止產生黑煙（煤），並且消除產生環境上的問題或煤附著 在被處理材的情形。 【實施方式】 以下，根據附圖來具體說明本發明之實施形態的蓄熱 燃燒式熱處理爐之燃燒控制方法。此外，本發明之蓄熱燃 燒式熱處理爐之燃燒控制方法並不特別限定於以下所述的 實施形態，而可在不變更發明之要旨的範圍内適當變更來 實施。 在此，該實施形態是如第1圖所示，對從蓄熱燃燒式 熱處理爐10的入口 11被引導至蓄熱燃燒式熱處理爐10 内之由鋼材所構成的被處理材1，利用遊樑2在蓄熱燃燒 式熱處理爐10内搬運而進行熱處理，並使如此進行過熱處 理的被處理材1通過蓄熱燃燒式熱處理爐10的出口 12而 從蓄熱燃燒式熱處理爐10取出。S 8 201202632 begins to burn. Here, in the above-described regenerative combustion type heat treatment furnace, a plurality of regenerative combustions II may be used, and the time at which the switching combustion operation and the heat storage operation are performed in each pair of regenerative burners may be different. Further, in the combustion control method of the regenerative combustion type heat treatment furnace according to the present invention, when the combustion operation and the heat storage operation of the FF regenerative burner are to be switched, it is preferable to use the fuel in the regenerative burner during the combustion and the burning operation. After the supply of the fuel gas of the gas supply company and the supply of the combustion air of the gas supply pipe are stopped, the combustion exhaust gas is discharged from the exhaust gas discharge pipe, and in the regenerative burner in the heat storage operation, the exhaust gas is discharged from the exhaust gas discharge pipe. After the operation of the exhaust gas is stopped, the supply of the fuel gas of the fuel gas supply pipe and the supply of the combustion air of the air supply pipe are started. In this way, when the combustion operation and the heat storage operation are to be switched, it is possible to prevent a part of the combustion air that is guided from the air supply pipe to the regenerator from traveling to the regenerator without passing through the regenerator during the switching operation by the switching valve. And discharged through the exhaust gas discharge pipe. (Effect of the Invention) In the combustion control method of the regenerative combustion type heat treatment furnace according to the present invention, when the combustion operation and the heat storage operation of the pair of regenerative burners are switched as described above, the regenerative burner in the combustion operation is used. Before the supply of the fuel gas from the fuel gas supply pipe and the supply of the combustion gas from the air supply pipe are reduced, 'in the regenerative burner in the heat storage operation, the fuel gas and the combustion air are supplied from the fuel gas supply air supply pipe. Make it open (4) 'ϋ (4) material gas supply wire to the regenerative burner for 9 323052 201202632 The fuel gas pressure in the fuel gas supply pipe of the fuel gas will be reduced, as described above for the regenerative burner in the heat storage operation When the fuel gas is supplied to start combustion, the amount of fuel gas supplied to the regenerative burner in the heat storage operation is reduced, and it is possible to suppress the occurrence of intense combustion at the beginning of the start of the combustion operation. As a result, according to the combustion control method of the regenerative combustion type heat treatment furnace of the present invention, when the combustion operation and the heat storage operation of the pair of regenerative burners are to be switched, the pressure in the regenerative combustion type heat treatment furnace can be suppressed from being drastically changed or incompletely generated. Combustion, and proper combustion can be performed stably. In particular, when propane gas or the like having poor flammability is used as the fuel gas, it is possible to prevent generation of black smoke (coal) and to eliminate environmental problems or adhesion of coal to the material to be treated. [Embodiment] Hereinafter, a combustion control method of a regenerative combustion type heat treatment furnace according to an embodiment of the present invention will be specifically described with reference to the drawings. In addition, the combustion control method of the heat-storing heat treatment furnace of the present invention is not limited to the embodiment described below, and can be appropriately modified without departing from the scope of the invention. Here, in this embodiment, as shown in FIG. 1, the material to be processed 1 composed of steel material is guided to the heat storage combustion type heat treatment furnace 10 from the inlet 11 of the heat storage combustion type heat treatment furnace 10, and the traveling beam 2 is used. The heat treatment is carried out in the heat storage combustion type heat treatment furnace 10, and the material to be treated 1 thus subjected to the heat treatment is taken out from the heat storage combustion type heat treatment furnace 10 through the outlet 12 of the heat storage combustion type heat treatment furnace 10.
10 323052 S 201202632 接下來，該實施形態是如第2圖所示，在上述蓄熱燃 燒式熱處理爐1〇中，使具有燃燒器部21及蓄熱室22的一 對蓄熱式燃燒器20相對向地沿著上述被處理材1的移動方 向，在蓄熱燃燒式熱處理爐10設置四對蓄熱式燃燒器20, 並且從供應一定量之燃料氣體的燃料氣體供應裝置30對 各蓄熱式燃燒器20的燃燒器部21供應燃料氣體。 在此，上述一對蓄熱式燃燒器20是如第3圖所示， 在一方的蓄熱式燃燒器20a中，將設在對收容有蓄熱材23a 的蓄熱室22a供應燃燒用空氣的空氣供應管24a的空氣供 應用閥25a打開，另一方面將設在通過蓄熱室22a排出燃 燒廢氣的廢氣排出管26a的氣體排出用閥27a關閉，並藉 由收容在該蓄熱室22a内的蓄熱材23a對通過上述空氣供 應管24a引導至蓄熱室22a内的燃燒用空氣進行加熱。 接下來，將如此加熱後的燃燒用空氣供應至燃燒器部 21a，並且將對設在該燃燒器部21a之中心的燃料氣體供應 官28a導入燃料氣體的氣體供應閥29a打開，使從上述燃 料氣體供應裝置30所供應的燃料氣體從該燃料氣體供應 管28a喷射，而進行使該燃料氣體在蓄熱燃燒式熱處理爐 10内燃燒的燃燒動作。 另一方面，在另一方的蓄熱式燃燒器20b中，將對燃 料氣體供應管28b供應燃料氣體的氣體供應閥2%以及設 在空氣供應管24b的空氣供應用閥25b關閉使其不進行燃 燒’另-方面將設在通過蓄熱室22b排出燃燒廢氣的廢氣 排出管26b的氣體排出用閥2几打開。 323052 11 201202632 接下來’將如上述在蓄熱燃燒式熱處理爐10内燃燒 過後的燃燒廢氣引導至蓄熱室22b，並且將燃燒廢氣的熱 蓄積在該蓄熱室22b所收容的蓄熱材23b，然後進行使該 燃燒廢氣通過上述廢氣排出管26b排出至外部的蓄熱動 作。 接下來，在上述一對蓄熱式燃燒器20a、20b中，交互 切換進行如上所述的燃燒動作及蓄熱動作。 而且’在各對的蓄熱式燃燒器20也是如上所述，在 各自一對的蓄熱式燃燒器20a、20b中交互切換進行上述燃 燒動作及蓄熱動作，並且在各對蓄熱式燃燒器2〇中，使切 換燃燒動作及蓄熱動作的時間點不同。 接下來，根據第4圖所示的時間序來說明在上述各對 蓄熱式燃燒器20中，切換各自一對的蓄熱式燃燒器2如、 2〇b之燃燒動作及蓄熱動作的動作。 、 在此，在要切換燃燒動作及蓄熱動作時，在燃燒動 中的蓄熱式燃燒器2Ga中會開始將處於打開狀態的空氣 應用閥25a及氣體供應閥29a關閉的操作，使從空氣供鹿 管24a通過蓄熱室22a供應至燃燒器部^的燃燒用= 的里慢慢地減少，並且使從㈣氣體供應管28a嘴 ^ 料氣體的量慢慢地減少。 接下來’在空氣供應用閥25a及氣體供應閥關 且不再供應燃燒用空氣及燃料氣體使燃燒停止的時間點才’ 將處於關閉狀態的氣體排出用閥27a打開，使被引導至三 熱室22a的燃燒廢氣的熱蓄積在該蓄熱室仏所收= 323〇52 12 201202632 熱材23a’然後使_燒廢氣通過上述廢氣排出管26a排 出至外部。 另一方面，在蓄熱動作中的蓄熱式燃燒器20b是在上 述燃燒動作巾的蓄熱式燃燒^ 2Ga巾關錢供應用闊 25a及氣體供應閥29a的操作開始之前，將處於打開狀態 的氣體排出用閥27b關閉，使通過廢氣排出管26b將燃燒 廢亂排出至外部的動作停止之後，再開始將處於關閉狀態 的空氣供應用閥25b及氣體供應閥2%打開的操作。 接下來，在上述燃燒動作中的蓄熱式燃燒器2〇a中關 閉空氣供應用閥25a及氣體供應閥29a的操作開始之前， 在该蓄熱動作中的蓄熱式燃燒器20b中，從空氣供應管24b 通過蓄熱至22b將燃燒用空氣供應至燃燒器部21b，並且 從燃料氣體供應管28b喷射燃料氣體使其開始燃燒。 如上所述’在燃燒動作中的蓄熱式燃燒器20a中關閉 空氣供應用閥25a及氣體供應閥29a的操作開始之前，在 該蓄熱動作中的蓄熱式燃燒器20b中，從空氣供應管24b 供應燃燒用空氣’並且從燃料氣體供應管28b喷射燃料氣 體時，在對上述燃燒動作中的蓄熱式燃燒器20a供應燃料 氣體的狀態下，會從供應一定量之燃料氣體的燃料氣體供 應裝置30對該蓄熱動作中的蓄熱式燃燒器2〇b供應燃料氣 體。 接下來’在如該實施形態設有四對蓄熱式燃燒器20 的蓄熱燃燒式熱處理爐10中，從燃料氣體供應裝置30所 供應的一定量的燃料氣體會被分散供應至四對蓄熱式燃燒 13 323052 201202632 器20中分別進行燃燒動作的四個蓄熱式燃燒器20a、以及 要開始燃燒的蓄熱動作中的蓄熱式燃燒器20b，因而供應 至要開始燃燒的蓄熱動作中之蓄熱式燃燒器20b的燃料氣 體的量會變得比平常的狀態少。 因此，在蓄熱動作中的蓄熱式燃燒器20b要開始燃燒 時，可抑制激烈燃燒的產生，因而可防止蓄熱燃燒式熱處 理爐10内的壓力劇烈變化，或是產生不完全燃燒，且可穩 定地進行適當的燃燒。 接下來，在上述各對蓄熱式燃燒器20中，亦同樣地 在要切換燃燒動作及蓄熱動作時，抑制蓄熱動作中的蓄熱 式燃燒器20b要開始燃燒時產生激烈的燃燒，且可穩定地 進行適當的燃燒。尤其，即使在使用燃燒性差的丙烧氣等 作為燃料氣體的情況時，也不會有如以往因為不完全燃燒 產生黑煙（煤），而產生環境上的問題，或是煤附著在被處 理材的情況。 而且，如上所述，在燃燒動作中的蓄熱式燃燒器20a 中關閉空氣供應用閥25a及氣體供應閥29a，不再供應燃 燒用空氣及燃料氣體而使燃燒停止的時間點，將處於關閉 狀態的氣體排出用閥27a打開，並且在蓄熱動作中的蓄熱 式燃燒器20b中將處於打開狀態的氣體排出用閥27b關閉 之後，打開處於關閉狀態的空氣供應用閥25b及氣體供應 閥29b時，可防止從空氣供應管24a、24b被引導至蓄熱室 22a、22b的燃燒用空氣的一部分沒有行進至蓄熱室22a、 22b而從旁經過，並且通過廢氣排出管26a、26b而排出。In the heat storage combustion type heat treatment furnace 1A, the pair of regenerative burners 20 having the burner portion 21 and the regenerator 22 are opposed to each other as shown in Fig. 2; Four pairs of regenerative burners 20 are disposed in the regenerative combustion type heat treatment furnace 10 along the moving direction of the material to be treated 1, and combustion of the regenerative burners 20 is performed from the fuel gas supply device 30 that supplies a certain amount of fuel gas. The unit 21 supplies fuel gas. In the above-described pair of regenerative burners 20, as shown in Fig. 3, in one of the regenerative burners 20a, an air supply pipe for supplying combustion air to the regenerators 22a in which the heat storage materials 23a are accommodated is provided. The air supply valve 25a of 24a is opened, and the gas discharge valve 27a provided in the exhaust gas discharge pipe 26a that discharges the combustion exhaust gas through the regenerator 22a is closed, and the heat storage material 23a accommodated in the heat storage chamber 22a is closed. The combustion air that has been guided to the inside of the regenerator 22a by the air supply pipe 24a is heated. Next, the combustion air thus heated is supplied to the burner portion 21a, and the gas supply valve 29a that introduces the fuel gas to the fuel gas supply officer 28a provided at the center of the burner portion 21a is opened to make the fuel The fuel gas supplied from the gas supply device 30 is injected from the fuel gas supply pipe 28a, and a combustion operation for burning the fuel gas in the thermal storage combustion type heat treatment furnace 10 is performed. On the other hand, in the other regenerative burner 20b, the gas supply valve 2% that supplies the fuel gas to the fuel gas supply pipe 28b and the air supply valve 25b provided in the air supply pipe 24b are closed so as not to be combusted. On the other hand, the gas discharge valve 2 provided in the exhaust gas discharge pipe 26b that discharges the combustion exhaust gas through the regenerator 22b is opened a few times. 323052 11 201202632 Next, the combustion exhaust gas after being burned in the regenerative combustion type heat treatment furnace 10 as described above is guided to the regenerator 22b, and the heat of the combustion exhaust gas is accumulated in the heat storage material 23b accommodated in the regenerator 22b, and then The combustion exhaust gas is discharged to the outside by the exhaust gas discharge pipe 26b. Next, in the pair of regenerative burners 20a and 20b, the combustion operation and the heat storage operation as described above are alternately performed. Further, as described above, in each of the pair of regenerative burners 20, the above-described combustion operation and heat storage operation are alternately performed in the respective pair of regenerative burners 20a and 20b, and in each pair of regenerative burners 2 The timing at which the combustion operation and the heat storage operation are switched is different. Next, the operation of the combustion operation and the heat storage operation of each of the pair of regenerative burners 2, 2b, in the respective pairs of regenerative burners 20 will be described based on the time sequence shown in Fig. 4. Here, when the combustion operation and the heat storage operation are to be switched, the operation of closing the air application valve 25a and the gas supply valve 29a in the open state in the regenerative burner 2Ga during the combustion is started, so that the deer is supplied from the air. The tube 24a is gradually reduced in the combustion amount supplied to the burner portion through the regenerator 22a, and the amount of the nozzle gas from the (four) gas supply pipe 28a is gradually decreased. Next, 'the gas discharge valve 27a in the closed state is opened at the time point when the air supply valve 25a and the gas supply valve are closed and the combustion air and the fuel gas are no longer supplied to stop the combustion, so as to be guided to the three heats. The heat of the combustion exhaust gas in the chamber 22a is accumulated in the regenerative chamber = 323 〇 52 12 201202632 The hot material 23a' is then discharged to the outside through the exhaust gas discharge pipe 26a. On the other hand, the regenerative burner 20b in the heat storage operation discharges the gas in an open state before the operation of the regenerative combustion type cleaning gas supply 25a and the gas supply valve 29a of the above-described combustion operation napkin is started. When the valve 27b is closed and the operation of discharging the combustion waste to the outside through the exhaust gas discharge pipe 26b is stopped, the operation of opening the air supply valve 25b and the gas supply valve 2% in the closed state is started. Next, before the operation of closing the air supply valve 25a and the gas supply valve 29a in the regenerative burner 2A in the above-described combustion operation, the regenerative burner 20b in the heat storage operation is supplied from the air supply pipe. 24b supplies combustion air to the burner portion 21b by heat storage to 22b, and injects fuel gas from the fuel gas supply pipe 28b to start combustion. As described above, before the start of the operation of closing the air supply valve 25a and the gas supply valve 29a in the regenerative burner 20a in the combustion operation, the regenerative burner 20b in the heat storage operation is supplied from the air supply pipe 24b. When the combustion air is injected and the fuel gas is injected from the fuel gas supply pipe 28b, the fuel gas supply device 30 that supplies a certain amount of fuel gas is supplied in a state where the regenerative burner 20a in the above-described combustion operation is supplied with the fuel gas. The regenerative burner 2〇b in the heat storage operation supplies the fuel gas. Next, in the regenerative combustion type heat treatment furnace 10 in which four pairs of regenerative burners 20 are provided as in this embodiment, a certain amount of fuel gas supplied from the fuel gas supply device 30 is dispersedly supplied to four pairs of regenerative combustion. 13 323052 201202632 The four regenerative burners 20a that perform the combustion operation and the regenerative burners 20b in the heat storage operation to start the combustion are supplied to the regenerative burner 20b in the heat storage operation to start combustion. The amount of fuel gas will become less than usual. Therefore, when the regenerative burner 20b in the heat storage operation starts combustion, the occurrence of intense combustion can be suppressed, so that the pressure in the heat storage combustion type heat treatment furnace 10 can be prevented from drastically changing, or incomplete combustion can be generated, and the combustion can be stably performed. Properly burn. In the same manner, in the above-described respective types of regenerative burners 20, when the combustion operation and the heat storage operation are to be switched, the regenerative burner 20b in the heat storage operation is prevented from being burned intensely when the combustion is started, and the combustion can be stably performed. Properly burn. In particular, even when a propylene gas or the like having poor combustibility is used as the fuel gas, there is no environmental problem due to incomplete combustion of black smoke (coal), or coal is attached to the material to be treated. Case. In the regenerative burner 20a in the combustion operation, the air supply valve 25a and the gas supply valve 29a are closed, and the combustion air and the fuel gas are not supplied to stop the combustion, and the combustion is stopped. When the gas discharge valve 27b is opened and the gas discharge valve 27b in the open state is closed in the regenerative burner 20b in the heat storage operation, the air supply valve 25b and the gas supply valve 29b in the closed state are opened. It is possible to prevent a part of the combustion air guided from the air supply pipes 24a and 24b to the regenerators 22a and 22b from traveling to the regenerators 22a and 22b and passing therethrough, and discharging them through the exhaust gas discharge pipes 26a and 26b.
14 323052 S 201202632 結果，在該實施形態中，供應至蓄熱燃燒式熱處理爐 ίο内的燃燒用空氣的比例會減少，而可防止供應至蓄熱燃 燒式熱處理爐1G内的燃料氣體與燃細空氣的比例產生 變動，且可穩定地進行更適當的燃燒。 此外，在上述實施形態中，在要交互切換一對蓄熱式 燃燒器20a、20b的燃燒動作及蓄熱動作時，在燃燒動作中 的蓄熱式織H 20a中_空氣供應…及氣體供應 閥不再供應賴Μ氣及㈣氣體錢燃燒停㈣ 時間點’雖係打開處於關閉狀態的氣體排出㈣2 7 &，斤 並不限定於這種實施形態。 例如’可如第5圖所示，在燃燒動作中的蓄熱式燃燒 器2〇a中開始將空氣供應用間2Sa及氣體供應閥加關閉 的動作之前，在蓄熱動作中的蓄熱式燃燒器施中，開始 打開處於關閉狀態的空氣供應關攻及氣體供應闕携 的動且在該蓄熱式燃燒器鳩中點燃燃料氣體而可開 始燃燒的時_ ’可使_上述輯動作㈣蓄熱燃燒器 ^之空氣供應㈣…及氣體供應閱I的動作開始。 如此方式進打時’在從燃燒動作中的蓄熱式燃燒器 =空氣供應㈣仏及氣體供應,加不再供應燃燒 燃料氣體而使燃燒停止之前，在蓄熱動作中的蓄 器2〇"點燃燃料氣體並開始燃燒，在要切換- 點燃燒器20a、2〇b之燃燒動作及蓄熱動作的時間 點’可抑制蓄鮮燒式熱處理爐1G變動。 在此，在上述燃燒動作中的蓄熱式燃燒器衡中，關 323052 15 201202632 於開始將空氣供應用閥25a及氣體供應閥29a關閉之動作 的時期’由於在蓄熱動作中的蓄熱式燃燒器20b中可適當 點燃燃料氣體並開始燃燒，因此在蓄熱動作中的蓄熱式燃 燒器20b中，從上述空氣供應用閥25b所供應的燃燒用空 氣的流量Va、以及從氣體供應閥29b所供應的燃料氣體的 流量Vf形成可進行燃燒之界限、即折返之臨界值以上的 流量的時間點，使燃燒動作中的蓄熱式燃燒器20a中關閉 空氣供應用閥25a及氣體供應閥29a的動作開始。 【圖式簡單說明】 第1圖是在本發明一實施形態的蓄熱燃燒式熱處理爐 之燃燒控制方法中，顯示蓄熱燃燒式熱處理爐之内部狀態 的概略剖面圖。 第2圖是該實施形態中之上述蓄熱燃燒式熱處理爐的 概略平面圖。 第3圖是在該實施形態中，顯示利用一對蓄熱式燃燒 器之一方蓄熱式燃燒器進行燃燒動作，另一方面利用另— 方蓄熱式燃燒器進行蓄熱動作之狀態的概略說明圖。 第4圖是在該實施形態中，顯示在一對各蓄熱式燃择 器之各個的蓄熱式燃燒器切換燃燒動作及蓄熱動作之動作 的時序圖。 第5圖是在該實施形態中’顯示在一對蓄熱式燃燒器 之各個的蓄熱式燃燒器切換燃燒動作及蓄熱動作之動作的 變形例的時序圖。 【主要元件符號說明】 323052 16 201202632 1 被處理材 2 遊樑 10 蓄熱燃燒式熱處理爐 11 入口 12 出口 20,20a,20b 蓄熱式燃燒器 21,21a,21b 燃燒器部 22,22a,22b 蓄熱室 23a,23b 蓄熱材 24a,24b 空氣供應管 25a,25b 空氣供應用閥 26a,26b 廢氣排出管 27a,27b 氣體排出用閥 28a,28b 燃料氣體供應管 29a,29b 氣體供應閥 30 燃料氣體供應裝置 17 32305214 323 052 S 201202632 As a result, in this embodiment, the proportion of the combustion air supplied to the heat storage combustion type heat treatment furnace is reduced, and the fuel gas and the combustion air supplied to the heat storage combustion type heat treatment furnace 1G can be prevented. The ratio changes, and more appropriate combustion can be performed stably. Further, in the above-described embodiment, when the combustion operation and the heat storage operation of the pair of regenerative burners 20a and 20b are to be alternately switched, the regenerative weave H 20a in the combustion operation is not supplied with the air supply valve and the gas supply valve. Supply of Laiqi gas and (4) Gas money combustion stop (4) Time point 'Although the gas is discharged in the closed state (4) 2 7 &, kg is not limited to this embodiment. For example, as shown in Fig. 5, the regenerative burner in the heat storage operation is started before the operation of closing the air supply chamber 2Sa and the gas supply valve in the regenerative burner 2A in the combustion operation. In the middle, when the air supply off and the gas supply in the closed state are started to be turned on, and the fuel gas is ignited in the regenerative burner 而 to start combustion, the above-mentioned series (4) regenerative burner can be activated. The air supply (4)... and the gas supply read I start. In this way, when the vehicle is driven, the accumulator 2 in the heat storage operation is ignited before the regenerative burner in the combustion operation = the air supply (4) and the gas supply, and the combustion fuel gas is no longer supplied to stop the combustion. When the fuel gas starts to be burned, it is possible to suppress the fluctuation of the fresh-storage heat treatment furnace 1G at the time point when the combustion operation and the heat storage operation of the burners 20a and 2b are to be switched. Here, in the regenerative burner scale in the above-described combustion operation, the period of the operation of closing the air supply valve 25a and the gas supply valve 29a is turned off 323052 15 201202632 ' due to the regenerative burner 20b in the heat storage operation In the regenerative burner 20b during the heat storage operation, the flow rate Va of the combustion air supplied from the air supply valve 25b and the fuel supplied from the gas supply valve 29b are appropriately ignited. The flow rate Vf of the gas forms a flow point at which the flow rate of the gas is equal to or greater than the critical value of the return value, and the operation of closing the air supply valve 25a and the gas supply valve 29a in the regenerative burner 20a during the combustion operation is started. [Brief Description of the Drawings] Fig. 1 is a schematic cross-sectional view showing an internal state of a regenerative combustion type heat treatment furnace in a combustion control method of a regenerative combustion type heat treatment furnace according to an embodiment of the present invention. Fig. 2 is a schematic plan view of the above-described regenerative combustion type heat treatment furnace in the embodiment. Fig. 3 is a schematic explanatory view showing a state in which the combustion operation is performed by one of the pair of regenerative burners and the heat storage operation is performed by the other side regenerative burner. Fig. 4 is a timing chart showing the operation of switching the combustion operation and the heat storage operation in the regenerative burners of the respective pair of regenerative burners in the embodiment. Fig. 5 is a timing chart showing a modification of the operation of switching the combustion operation and the heat storage operation of each of the regenerative burners of the pair of regenerative burners in the embodiment. [Description of main component symbols] 323052 16 201202632 1 Material to be treated 2 Beam 10 Regenerative combustion type heat treatment furnace 11 Inlet 12 Outlet 20, 20a, 20b Regenerative burner 21, 21a, 21b Burner section 22, 22a, 22b Regenerator 23a, 23b Heat accumulating material 24a, 24b Air supply pipe 25a, 25b Air supply valve 26a, 26b Exhaust gas discharge pipe 27a, 27b Gas discharge valve 28a, 28b Fuel gas supply pipe 29a, 29b Gas supply valve 30 Fuel gas supply device 17 323052