201200810 六、發明說明： 本申請案是根據日本專利申請案2010-127569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，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當中，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：在上述蓄 熱燃燒式熱處理爐中，使從各蓄熱式燃燒器之燃料氣體供 應管所供應的燃料氣體的供應量、以及從空氣供應管所供 應的燃燒用空氣的供應量一定化，而可穩定地進行適當的 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（regeneration type burner)的蓄熱燃燒 式熱處理爐，該蓄熱式燃燒器具有：具備燃料氣體供應管201200810 VI. INSTRUCTIONS: This application claims priority from Japanese Patent Application No. 2010-127569. [Technical Field] 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 having a fuel gas supply a burner portion of the tube, 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, 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 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, in the above-described regenerative combustion type heat treatment furnace, the supply amount of the fuel gas supplied from the fuel gas supply pipes of the regenerative burners and the supply amount of the combustion air supplied from the air supply pipe are provided. It is fixed, and proper combustion can be performed stably. [Prior Art] Conventionally, when heat-treating a material to be processed, a regenerative combustion type heat treatment furnace provided with at least one pair of regenerative burners having a fuel gas supply pipe is used.
4 323051 S 201200810 的燃，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，排出s，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弓f導至燃燒器部，並且從該燃燒 器。P的燃料氣體供應官噴射燃料氣體而進行燃燒動作，另 -方面另—方的蓄熱式燃繞器中，進行將燃燒廢氣引 導至上述蓄熱至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。 而且，上述蓄熱燃燒式熱處理爐中，為了連續對被處 f材進行熱處理’也使用—種在上述熱處理爐設置複數對 蓄熱式燃燒器，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的構造。 而且，在上述蓄熱燃燒式熱處理爐中要將燃料氣體供 應至上述各蓄熱式燃燒器的燃料氣體供應管_，一般是從 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 應至各燃料氣體供應管。 在此，在如上所述的蓄熱燃燒式熱處理爐中要交互切 換對蓄熱式燃燒器之燃燒動作及蓄熱動作時，以往已知 有如日本特開平10_185176號公報及日本特開平 11-159744號公報所示，在燃燒動作中的蓄熱式燃燒器中 使燃料氣體供應管之燃料氣體的供應停止之後，停止空氣 供應管之燃燒用空氣的供應，另一方面，在蓄熱動作中的 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 323051 201200810 後，再開始燃料氣體供應管之燃料氣體的供應。 然而，在如上述於蓄熱燃燒式熱處理爐設置複數對蓄 熱式燃燒器’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，並且從燃料氣體供應裝置將一定量 的燃料氣體供應至各燃料氣體供應管的蓄熱燃燒式熱處理 爐的情況時，於要進行燃燒動作及蓄熱動作之切換的一對 蓄熱式燃燒器中，如上述通過燃料氣體供應管之後所供應 的燃料氣體的量暫時停止的結果，從燃料氣體供應裝置供 應至其他蓄熱式燃燒器對之燃料氣體供應管的燃料氣體的 量就會增加。結果’在其他蓄熱式燃燒器對中，燃料氣體 相對於燃燒用空氣的比率就變會高，以致燃燒狀態有所變 動，而產生無法穩定進行適當之燃燒的問題。尤其，氣體 使用燃燒性差的氣體例如使用丙烷氣作為上述燃料的情況 時，一旦丙烷氣相對於燃燒用空氣的比率變高，就會有因 為不完全燃燒而產生黑煙（煤），因而有環境上的問題，或 是煤附著在被處理材而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） 本發明之課題在於解決以如下方式動作的蓄熱燃燒 式熱處理爐之如上所述的問題，該蓄熱燃燒式熱處理爐係 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 3230514 323051 S 201200810, the heat storage chamber for storing the heat storage material, the air supply pipe for supplying combustion air to the regenerator, and the waste gas for exhausting the combustion exhaust gas from the regenerator, discharging s, and storing heat in one In the burner, the combustion air bow f is led from the air supply pipe through the regenerator to the burner section, and from the burner. The fuel gas supply officer of P injects the fuel gas to perform the combustion operation, and in the other aspect, the regenerative burner is configured to guide the combustion exhaust gas to the heat storage to accumulate the heat of the combustion exhaust gas in the heat storage material and then from the exhaust gas. The heat storage operation discharged from the discharge pipe' and the above-described combustion operation and heat storage operation of the pair of regenerative burners are alternately switched. Further, in the above-described regenerative combustion type heat treatment furnace, in order to continuously heat-treat the material to be processed, a plurality of pairs of regenerative burners are provided in the heat treatment furnace, and switching combustion operations are performed in each pair of regenerative burners. The structure of the heat storage operation at different points in time. Further, in the above-described regenerative combustion type heat treatment furnace, fuel gas is supplied to the fuel gas supply pipe of each of the above-described regenerative burners, and fuel gas is generally supplied to each fuel from a fuel gas supply device that supplies a certain amount of fuel gas. Gas supply pipe. Here, in the above-described regenerative combustion type heat treatment furnace, the combustion operation and the heat storage operation of the regenerative burner are alternately switched, and the conventionally disclosed Japanese Patent Publication No. Hei 10-185176 and Japanese Patent Application Laid-Open No. Hei 11-159744 After the supply of the fuel gas in the fuel gas supply pipe is stopped in the regenerative burner in the combustion operation, the supply of the combustion air in the air supply pipe is stopped, and in the regenerative burner in the heat storage operation. After the supply of the combustion air of the air supply pipe is started, 323051 201200810, the supply of the fuel gas of the fuel gas supply pipe is started. However, in the above-described regenerative combustion type heat treatment furnace, a plurality of pairs of regenerative burners are provided, and the time at which the switching combustion operation and the heat storage operation are performed in each pair of regenerative burners is different, and a certain amount of fuel is supplied from the fuel gas supply device. In the case where the gas is supplied to the regenerative combustion type heat treatment furnace of each of the fuel gas supply pipes, in the pair of regenerative burners to be switched between the combustion operation and the heat storage operation, the fuel gas supplied after passing through the fuel gas supply pipe as described above As a result of the temporary stop of the amount, the amount of fuel gas supplied from the fuel gas supply device to the fuel gas supply pipe of the other regenerative burner increases. As a result, in other regenerative burner pairs, the ratio of the fuel gas to the combustion air becomes high, so that the combustion state is changed, and there is a problem that stable combustion cannot be stably performed. In particular, when a gas having poor combustibility is used as the gas, for example, when propane gas is used as the fuel, when the ratio of the propane gas phase to the combustion air is high, black smoke (coal) is generated due to incomplete combustion, and thus there is an environment. The problem is that the coal is attached to the material to be treated and the heat treatment cannot be properly performed. [Problem to be Solved by the Invention] An object of the present invention is to solve the above-described problems of a regenerative combustion type heat treatment furnace which is operated as follows, and the regenerative combustion type heat treatment furnace is provided with at least one pair of regenerative combustion The regenerative 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 exhausting the combustion exhaust gas from the regenerator. Exhaust gas exhaust pipe, one of the regenerative burners 323051
S 6 201200810 :：空氣供應管通過蓄熱室將燃燒用空氣引導至燃燒器 、一、、：&該燃燒器部的燃料氣體供應管噴射燃料氣體而 進二燃燒動作’ m，在另—方的蓄熱式燃燒器中， ^將燃燒廢氣引導至上述蓄熱室並將燃燒廢氣的熱蓄積 在畜熱,再從廢氣排出管排出的蓄熱動作，並且交互切換 該-對蓄熱式燃燒器之上述燃燒動作及蓄熱動作。 。亦即’本發明之課題在於：要交互切換—對蓄熱式燃 燒器之上述燃燒動作及蓄熱動作時，使從各蓄熱式燃燒器 之燃料氣體供應管所供應的燃料氣體的供應量、以及從空 氣供應管所供應的燃燒用空氣的供應量一定化，而可穩定 地進行適當的燃燒。 (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 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 蓄熱式燃燒器之上述燃燒動作及蓄熱動作，該燃燒控制方 7 323051 201200810 法之特徵為.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，使燃料 氣體供應管之燃料氣體的供應量、以及空氣供應管之燃繞 用空氣的供應量從平常燃燒狀態減少’另一方面，在蓄熱 動作中的蓄熱式燃燒器中，使燃料氣體供應管之燃料氣體 的供應量、以及空氣供應管之燃燒用空氣的供應量從停止 狀態增加，使上述一對蓄熱式燃燒器中從燃料氣體供應管 所供應的燃料氣體的供應量、以及從空氣供應管所供應的 燃燒用空氣的供應量一定化。 在此’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，在燃燒動作中的蓄熱式燃燒器中，使燃料 氣體供應管之燃料氣體的供應量、以及空氣供應管之燃燒 用空氣的供應量減少’另一方面，在蓄熱動作中的蓄熱式 燃燒器中’使燃料氣體供應管之燃料氣體的供應量、以及 空氣供應管之燃燒用空氣的供應量增加，使該一對蓄熱式 燃燒器中從燃料氣體供應管所供應的燃料氣體的供應量、 以及從空氣供應管所供應的燃燒用空氣的供應量一定化 時’即使在燃燒動作及蓄熱動作的切換時，也可藉由該一 對蓄熱式燃燒器使供應至蓄熱燃燒式熱處理爐的燃料氣體 的量以及燃燒用空氣的量及其比例一定化，而可穩定地進 行適當的燃燒。 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器，並且在各對f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。 323051S 6 201200810: The air supply pipe guides the combustion air to the burner through the regenerator, and the fuel gas supply pipe of the burner portion injects the fuel gas into the second combustion action 'm, in the other side In the regenerative burner, the combustion exhaust gas is guided to the regenerator and the heat of the combustion exhaust gas is accumulated in the heat of the livestock, and the heat storage operation is discharged from the exhaust gas discharge pipe, and the combustion of the regenerative burner is alternately switched. Action and heat storage action. . That is, the subject of the present invention is to alternately switch the supply amount of fuel gas supplied from the fuel gas supply pipes of the respective regenerative burners to the above-described combustion operation and heat storage operation of the regenerative burner. The supply amount of the combustion air supplied from the air supply pipe is fixed, and proper combustion can be stably performed. (Means for Solving the Problem) In the combustion control method of the regenerative combustion type heat treatment furnace according to the present invention, the regenerative combustion type heat treatment furnace is provided with at least one pair of regenerative burners, and the heat storage is provided. The burner includes 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 an exhaust gas discharge pipe for discharging 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. In the other type of regenerative burner, 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 above-described pair of regenerative burners are alternately switched. The combustion action and the heat storage action, the combustion control method 7 323051 201200810 method is characterized in that the pair is to be switched In the combustion operation and the heat storage operation of the thermal burner, in the regenerative burner in the combustion operation, the supply amount of the fuel gas in the fuel gas supply pipe and the supply amount of the combustion air in the air supply pipe are normally burned. On the other hand, in the regenerative burner in the heat storage operation, the supply amount of the fuel gas in the fuel gas supply pipe and the supply amount of the combustion air in the air supply pipe are increased from the stop state, so that the pair is added. The supply amount of the fuel gas supplied from the fuel gas supply pipe and the supply amount of the combustion air supplied from the air supply pipe in the regenerative burner are fixed. Here, 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, the supply amount of the fuel gas in the fuel gas supply pipe and the air supply pipe are The amount of supply of combustion air is reduced. On the other hand, in the regenerative burner during the heat storage operation, the supply amount of the fuel gas in the fuel gas supply pipe and the supply amount of the combustion air in the air supply pipe are increased. When the supply amount of the fuel gas supplied from the fuel gas supply pipe and the supply amount of the combustion air supplied from the air supply pipe are constant in the pair of regenerative burners, even when the combustion operation and the heat storage operation are switched, By the pair of regenerative burners, the amount of fuel gas supplied to the regenerative combustion type heat treatment furnace and the amount of combustion air and the ratio thereof can be made constant, and appropriate combustion can be stably performed. Here, in the above-described regenerative combustion type heat treatment furnace, a plurality of regenerative burners may be used, and the time at which the switching combustion operation and the heat storage operation are performed in each pair of the f-type burners may be different. 323051
S 8 201200810 而且’在本發明之蓄熱燃燒式熱處理爐之燃燒控制方 法中’可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。在該 情況下’也可在如上述進行燃燒動作及蓄熱動作之切換的 一對蓄熱式燃燒器中’使從燃料氣體供應管所供應的燃料 氣體的供應量、以及從空氣供應管所供應的燃燒用空氣的 供應量疋化，因此可對蓄熱燃燒式熱處理爐内供應一定 量的燃料氣體及燃燒用空氣。 —而且’即使是如上述在蓄熱燃燒式熱處理爐設置複數 對畜熱j燃燒器，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的情況時，也可在如上述進 行二^動作及蓄熱動作之切換的一對蓄熱式燃燒器中供應 疋量的燃料氣體及燃燒用空氣，結果，從上述燃料氣體 供應^置供應至其他蓄熱式職器對之燃料氣體供應管的 燃料孔體的量就不會增加，即使在其他蓄熱式燃燒器對 中’燃料氣體相對於燃燒用空氣的比率也得以保持一定。 又在本發明之蓄熱燃燒式熱處理爐之燃燒控制方法 中，在要切換一對蓄熱式燃燒器之燃燒動作及蓄熱動作 時三最奸在職動作中的蓄減燃燒n中，使燃料氣體供 應=之燃料氣體的供應以及空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，另一方面， 在蓄，動作中的蓄熱式燃燒器中，使從廢氣排出管排出燃 燒廢鼠的操作停止之後，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— 323051 9 201200810 來在要切換燃繞動作及蓄熱動作時，可確實地防止利用 切換閥進灯的切換動作中，從空氣供應管被引導至蓄熱室 的燃燒用工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，以使供應至 蓄熱燃燒式熱處理 爐内的燃料氣體與燃燒用空氣的比例形成更穩定的狀態。 (發明之效果） 本發月之蓄熱燃燒式熱處理爐之燃燒控制方法中，如 ^所，要切換-對蓄熱式燃燒器之燃燒動作及蓄熱動作 日溶疋在燃燒動作中的蓄熱式燃燒器中，使燃料氣體供應 之燃料氣體的供應量、以及空氣絲管之雜用氣體的 :應量減少’另一方面’在蓄熱動作中的蓄熱式燃燒器中’ 使燃料氣體供應管之燃料氣體的供應量、以及空氣供應管 燒用工氣的供應直增加，使上述一對蓄熱式燃燒器整 "’從燃料氣體供應管所供應的燃料氣體的供應量、以 及從空氣供應管所供應的燃燒用空氣的供應量一定化，因 此即使在燃燒動作及蓄熱動作的切換時，也可對蓄熱燃燒 式熱處理爐内供應一定量的燃料氣體及燃燒用空氣。 結果，在要切換一對蓄熱式燃燒器之燃燒動作及蓄熱 動作時，纟可抑制蓄熱燃燒式熱處理爐内的燃燒狀態之變 化且可穩定地進行適當的燃燒。 而且，即使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的燃料氣體供應 管的情況時’也可在如上述進行燃燒動作及蓄熱動作之切 換的-對蓄熱式燃燒器中，對蓄熱燃繞式熱處理爐内供應S 8 201200810 Further, in the combustion control method of the regenerative combustion type heat treatment furnace of the present invention, the fuel gas can be supplied from the fuel gas supply means supplying a certain amount of fuel gas to the fuel gas supply pipes of the respective regenerative burners. In this case, 'the supply amount of the fuel gas supplied from the fuel gas supply pipe and the supply from the air supply pipe may be 'in a pair of regenerative burners in which the combustion operation and the heat storage operation are switched as described above. Since the supply amount of the combustion air is degraded, a certain amount of fuel gas and combustion air can be supplied to the regenerative combustion type heat treatment furnace. - In addition, even if a plurality of pairs of heat generators are installed in the heat storage combustion type heat treatment furnace as described above, and the time at which the switching combustion operation and the heat storage operation are performed in each of the heat storage type burners is different, The fuel gas and the combustion air are supplied in a pair of regenerative burners that perform the switching between the two operation and the heat storage operation, and as a result, the fuel gas supply from the fuel gas supply to the other regenerative fuel supply is supplied. The amount of fuel pores in the tube does not increase, even in other regenerative burner pairs, the ratio of fuel gas to combustion air is kept constant. Further, in the combustion control method of the regenerative combustion type heat treatment furnace according to the present invention, in the combustion operation and the heat storage operation of the pair of regenerative burners, the fuel gas supply is made in the storage and reduction combustion n of the three most in-service operations. After the supply of the fuel gas and the supply of the combustion air in the air supply pipe are stopped, the combustion exhaust gas is discharged from the exhaust gas discharge pipe, and the regenerative burner in the operation and the operation is discharged from the exhaust gas discharge pipe. After the operation of the rat 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. 323051 9 201200810 When the switching operation and the heat storage operation are to be switched, it is possible to reliably prevent the part of the combustion gas that is guided from the air supply pipe to the regenerator from traveling to the heat storage during the switching operation of the switching valve. The chamber passes by and passes through the exhaust gas discharge pipe to form a more stable state of the ratio of the fuel gas and the combustion air supplied to the heat storage combustion type heat treatment furnace. (Effect of the Invention) In the combustion control method of the regenerative combustion type heat treatment furnace of the present month, if necessary, the regenerative burner in which the combustion operation of the regenerative burner and the heat storage operation are dissolved in the combustion operation are performed. In the regenerative burner in which the fuel gas is supplied, the amount of the fuel gas supplied to the fuel gas, and the amount of the miscellaneous gas in the air tube are reduced. The supply amount and the supply of the air supply pipe burning gas increase directly, so that the pair of regenerative burners are integrated with the supply of fuel gas supplied from the fuel gas supply pipe and the supply of the fuel gas from the air supply pipe. Since the supply amount of the combustion air is constant, a certain amount of fuel gas and combustion air can be supplied to the regenerative combustion type heat treatment furnace even when the combustion operation and the heat storage operation are switched. As a result, when the combustion operation and the heat storage operation of the pair of regenerative burners are to be switched, the combustion state in the regenerative combustion type heat treatment furnace can be suppressed and the appropriate combustion can be stably performed. Further, even when the fuel gas is supplied from the fuel gas supply device that supplies a certain amount of fuel gas to the fuel gas supply pipe of each of the regenerative burners, the switching between the combustion operation and the heat storage operation can be performed as described above - For regenerative burners, supply to heat storage and heat treatment furnaces
323051 S 10 201200810 一定量的燃料氣體及燃燒用空氣，因此從燃料氣體供應掌 置供應至各蓄熱式燃燒器的燃料氣體的總量不會變動，^ 可穩定地進行適當的燃燒。 而且，即使在蓄熱燃燒式熱處理爐設置複數對蓄熱气 燃燒器，並且使各對蓄熱式燃燒器中切換燃燒動作及蓄= 動作的時間點不同的情況時，如上述從燃料氣體供應14置 供應至其他蓄熱式燃燒器對的燃料氣體供應管的燃料氣體 之量也不會增加，即使在其他蓄熱式燃燒器對中，燃料氣 體相對於燃燒用空氣的比率也得以保持一定，而可穩定地 進行適當的燃燒。因此，即使在從燃料氣體供應管所供應 的燃料氣體是使用燃燒性差的丙烷氣等的情況時，也可防 止黑煙（煤）的產生’並且不會有環境上的問題，或是煤附 著在被處理材的情況。 【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 u被引導至蓄熱燃燒式熱處理爐1〇 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 323051 11 201200810 從蓄熱燃燒式熱處理爐ίο取出。 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10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 管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29b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’另一方面將設在通過蓄熱室22b排出燃燒廢氣的廢氣323051 S 10 201200810 A certain amount of fuel gas and combustion air do not change the total amount of fuel gas supplied from the fuel gas supply side to each of the regenerative burners, so that appropriate combustion can be performed stably. Further, even when a plurality of pairs of the heat storage gas burners are provided in the heat storage combustion type heat treatment furnace, and the time points at which the combustion operation and the storage operation are switched in the respective types of the regenerative burners are different, the fuel gas supply 14 is supplied as described above. The amount of fuel gas to the fuel gas supply pipe of the other regenerative burner pair does not increase, even in other regenerative burner pairs, the ratio of the fuel gas to the combustion air is kept constant, and can be stably Properly burn. Therefore, even when the fuel gas supplied from the fuel gas supply pipe is a case where propane gas or the like having poor combustion property is used, the generation of black smoke (coal) can be prevented and there is no environmental problem or coal adhesion. In the case of 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 type heat treatment furnace of the present invention is not limited to the embodiment described below, and can be appropriately changed without departing from the scope of the invention. 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 1 from the inlet u of the heat storage combustion type heat treatment furnace 10, and the beam is used. 2, 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 outlet 12 of the heat storage combustion type heat treatment furnace 10 and 323051 11 201200810 is taken out from the heat storage combustion type heat treatment furnace ίο. Next, in the above-described heat storage combustion type heat treatment furnace 10, the pair of regenerative burners 20 having the burner portion 21 and the regenerator 22 are opposed to each other as described above. In the direction of movement of the material 1, four pairs of regenerative burners 20 are provided in the regenerative combustion type heat treatment furnace 10, and fuel is supplied to the burner portion 21 of each regenerative burner 20 from a fuel gas supply device 30 that supplies a certain amount of fuel gas. 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 pipe 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 29b 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 burn' On the other hand, the exhaust gas which is disposed in the regenerator 22b to exhaust the combustion exhaust gas
12 323051 S 201200810 排出管26b的氣體排出用閥27b打開。 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20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圖所示的時序圖來說明在上述各對 蓄熱式燃燒器20中，切換各自一對的蓄熱式燃燒器20a、 20b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，在燃燒動作 中的蓄熱式燃燒器20a中會開始將處於打開狀態的空氣供 應用閥25a及氣體供應閥29a關閉的操作，使從空氣供應 管24a通過蓄熱室22a供應至燃燒器部21a的燃燒用空氣 的量慢慢地減少，並且使從燃料氣體供應管28a喷射的燃 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29a關閉， 且不再供應燃燒用空氣及燃料氣體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，使被引導至蓄 13 323051 201200810 熱至22a的燃燒廢氣的熱蓄積在該蓄熱室22&所收容的蓄 熱材23a，然後使該燃燒廢氣通過上述廢氣排出管排 出至外部。 另一方面，在蓄熱動作t的蓄熱式燃燒器2〇b中是在 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將燃燒廢氣排出至外部的動作停止之後，在開始 將上述蓄熱式燃燒器2如之空氣供應用閥25a及氣體供應 閥29a關閉的操作的同時’開始將處於關閉狀態的空氣： 應用閥25b及氣體供應閥29b打開的操作，使從空氣供應 管24b通過蓄熱室22b供應至燃燒器部训的燃燒用空& 的量慢慢地增加，並且使從燃料氣體供應管28b噴射的$ 料氣體的量慢慢地增加，使其開始燃燒。 在此，上述各空氣供應用閥25a、25b及各氣體供應 29a、29b的開閉動作通常需要數秒鐘，因此在這段、、 須將進行燃燒動作申的蓄熱式燃燒器2〇a之燃燒用空令 燃料氣體的減少量、以及進行㈣動作中的蓄熱式機2 20b之燃燒用空氣及闕氣體的增加量控制純常相等。。 而且’該實施例是如第4圖所示，使關閉—方空氣供應用 閥25a及氣體供應閥29a的動作、以及打開另一方*舍 二礼供 應用閥25b及氣體供應閥29b的動作同時開始，並且使 耗費相同的時間動作。 、 在此該對蓄熱式燃燒器20a、20b是如上所迷，使 從各燃料氣體供應管28a、28b所供應的燃料氣體整體的供 應量、以及從空氣供應管24a、24b所供應的燃燒用空氣整 323051 14 201200810 體的供應量不會變化，而可供應的燃料氣體及燃燒 用空氣。 如此一來’即使在一對蓄熱式蜓繞器2〇a、2〇b的燃燒 動作及蓄熱動作之切換時’供應至蓄熱燃燒式熱處理爐1〇 的燃料氣體的量以及燃燒用空氣的量及其比例也會一定 化，且可穩定地進行適當的燃燒。 而且，如上述在蓄熱燃燒式熱處理爐1〇設置複數對 蓄熱式燃燒器20,並且從供應—定量之燃料氣體的燃料氣 體供應裝置30將燃·體供應至各對f熱式燃燒器加之 各，料氣體供應管28a、28b的情況時，即使如上所述在一 對畜熱式燃燒器2Ga、遍的燃燒動作及蓄熱動作之切換 時’在該-對蓄熱式燃燒器施、高整體中，使從燃料氣 體供/應管28a、28b所供應的燃料氣體的供應量成為-定 時’攸上述燃料氣體供應裝置3〇供應至其他蓄熱式燃燒器 〇之各燃料氣體供應管28a、28b的燃料氣體的量也不會 有所變化。 因此，在一對蓄熱式燃燒器2〇a、2〇b的燃燒動作及蓄 熱動作之切換時，在其他蓄熱式燃燒器2()中，不會有燃料 氣體相對於燃燒用空氣的比例增加而使燃燒狀態變化之情 形’即使在燃料氣體是使用燃燒性差的丙烷氣等的情況 夺也不會如以往因為不完全燃燒而產生黑煙（煤），並且 產生環境上㈣題’或是煤附著在被處理材而無法適當地 進行熱處理的情況，而可穩定地進行適當的燃燒。 又’在進行燃燒動作的蓄熱式燃燒器20a中，在如上 323051 15 201200810 述關閉空氣供應用閥25a及氣體供應閥29a，不再供應燃 燒用空氣及燃料氣體並停止燃燒的時間點，將處於關閉狀 態的氣體排出用閥27a打開時，可防止從空氣供應管24a 被引導至蓄熱室22a的燃燒用空氣的一部分沒有行進至蓄 熱室22a而從旁經過，並且通過廢氣排出管26a而排出。 而且，在進行蓄熱動作的蓄熱式燃燒器20b中，如上 述將處於打開狀態的氣體排出用閥27b關閉之後，將處於 關閉狀態的空氣供應用閥25b及氣體供應閥29b打開時， 可防止從空氣供應管24b被引導至蓄熱室22b的燃燒用空 氣的一部分沒有行進至蓄熱室22b而從旁經過，並且通過 廢氣排出管26b而排出。 結果，可防止供應至蓄熱燃燒式熱處理爐10内的燃 燒用空氣的比例減少，使供應至蓄熱燃燒式熱處理爐10 内的燃料氣體與燃燒用空氣的比例形成更一定的狀態，而 可穩定地進行更適當的燃燒。 【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，另一方面利用另一 方蓄熱式燃燒器進行蓄熱動作之狀態的概略說明圖。 16 32305112 323051 S 201200810 The gas discharge valve 27b of the discharge pipe 26b is opened. Then, 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 made. The heat storage operation is discharged to the outside through 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, in each of the pair of regenerative burners 20, as described above, the above-described combustion operation and heat storage operation are alternately switched in the respective pair of regenerative burners 20a and 20b, and in each pair of regenerative burners 20, 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 20a and 20b in the respective pairs of regenerative burners 20 will be described based on the timing chart shown in Fig. 4 . Here, when the combustion operation and the heat storage operation are to be switched, the operation of closing the air supply valve 25a and the gas supply valve 29a in the open state in the regenerative burner 20a during the combustion operation is started, so that the air supply pipe is closed. The amount of combustion air supplied to the burner portion 21a through the regenerator 22a is gradually decreased, and the amount of fuel gas injected from the fuel gas supply pipe 28a is gradually decreased. When the air supply valve 25a and the gas supply valve 29a are closed and the combustion air and the fuel gas are no longer supplied to stop the combustion, the gas discharge valve 27a in the closed state is opened to be guided to the storage. 13 323051 201200810 The heat of the combustion exhaust gas heated to 22a is accumulated in the heat storage material 23a accommodated in the regenerator 22& and then the combustion exhaust gas is discharged to the outside through the exhaust gas discharge pipe. On the other hand, in the regenerative burner 2b in the heat storage operation t, the gas discharge valve 27b in the open state is closed, and the operation of discharging the combustion exhaust gas to the outside through the exhaust gas discharge pipe 26b is stopped. While the above-described operation of the regenerative burner 2 such as the air supply valve 25a and the gas supply valve 29a is closed, the air that is to be in the closed state is started: the operation of the application valve 25b and the gas supply valve 29b is opened, so that the slave air supply pipe is opened. The amount of combustion air & supplied to the burner section by the regenerator 22b is gradually increased, and the amount of the material gas injected from the fuel gas supply pipe 28b is gradually increased to start combustion. Here, since the opening and closing operations of the air supply valves 25a and 25b and the respective gas supplies 29a and 29b are usually required for several seconds, the combustion of the regenerative burner 2A for performing the combustion operation is required. The amount of reduction in the amount of air-fuel gas and the amount of increase in the amount of combustion air and helium gas in the regenerative machine 2 20b during the (fourth) operation are always equal. . Further, in the fourth embodiment, as shown in Fig. 4, the operation of closing the air supply valve 25a and the gas supply valve 29a and the operation of opening the other valve 2b and the gas supply valve 29b are simultaneously performed. Start and make the same time action. Here, the pair of regenerative burners 20a and 20b are as described above, and the supply amount of the entire fuel gas supplied from the respective fuel gas supply pipes 28a and 28b and the combustion supplied from the air supply pipes 24a and 24b are used. Air 323051 14 201200810 The supply of the body does not change, but the fuel gas and combustion air can be supplied. In this way, 'when the combustion operation and the heat storage operation of the pair of regenerative entanglers 2〇a and 2〇b are switched, the amount of fuel gas supplied to the regenerative combustion type heat treatment furnace 1 and the amount of combustion air. The ratio and the ratio thereof are also fixed, and appropriate combustion can be performed stably. Further, as described above, a plurality of pairs of regenerative burners 20 are provided in the regenerative combustion type heat treatment furnace, and the fuel gas supply means 30 supplies the fuel gas from the supply-quantity fuel gas to each pair of f-type thermal burners. In the case of the material gas supply pipes 28a and 28b, even in the case of switching between the combustion operation and the heat storage operation of the pair of the combo burners 2Ga as described above, 'in this-to-storage type burner, high overall The supply amount of the fuel gas supplied from the fuel gas supply/supply pipes 28a, 28b is -timed', and the fuel gas supply means 3 is supplied to the respective fuel gas supply pipes 28a, 28b of the other regenerative burners The amount of fuel gas will not change. Therefore, in the switching between the combustion operation and the heat storage operation of the pair of regenerative burners 2a, 2b, the ratio of the fuel gas to the combustion air is increased in the other regenerative burners 2(). In the case where the combustion state is changed, even if the fuel gas is a propane gas or the like which is poor in combustibility, black smoke (coal) is not generated as in the past due to incomplete combustion, and environmental (4) questions or coal is generated. When it is attached to the material to be processed and the heat treatment cannot be performed properly, it is possible to stably perform appropriate combustion. Further, in the regenerative burner 20a that performs the combustion operation, when the air supply valve 25a and the gas supply valve 29a are closed as described above, 323051 15 201200810, the combustion air and the fuel gas are no longer supplied, and the combustion is stopped. When the gas discharge valve 27a in the closed state is opened, it is possible to prevent a part of the combustion air guided to the regenerator 22a from the air supply pipe 24a from traveling to the regenerator 22a and passing therethrough, and discharging it through the exhaust gas discharge pipe 26a. Further, in the regenerative burner 20b that performs the heat storage operation, when the gas discharge valve 27b in the open state is closed as described above, when the air supply valve 25b and the gas supply valve 29b in the closed state are opened, the slave can be prevented from being opened. A part of the combustion air that is guided to the regenerator 22b by the air supply pipe 24b does not travel to the regenerator 22b and passes by, and is discharged through the exhaust gas discharge pipe 26b. As a result, it is possible to prevent the ratio of the combustion air supplied to the regenerative combustion type heat treatment furnace 10 from being reduced, and to make the ratio of the fuel gas and the combustion air supplied to the regenerative combustion type heat treatment furnace 10 to a more constant state, and to stably stabilize Perform a more appropriate combustion. [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 regenerative burners of one of the regenerative burners, and the heat storage operation is performed by the other regenerative burner. 16 323051
S 201200810 第4圖是在該實施形態中，顯示在各對蓄熱式燃燒器 之各個的蓄熱式燃燒器中切換燃燒動作及蓄熱動作之動作 的時序圖。 【主要元件符號說明】 1 被處理材 2 遊樑 10 蓄熱燃燒式熱處理爐 11 入口 12 出曰 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 323051S 201200810 Fig. 4 is a timing chart showing the operation of switching the combustion operation and the heat storage operation in each of the regenerative burners of the respective pairs of regenerative burners in the embodiment. [Description of main components] 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 323051