Automatic ignition furnace baking device of gasification furnace

Abstract

The utility model relates to the technical field of gasification furnaces, in particular to an automatic ignition furnace baking device of a gasification furnace. The device comprises a preheating burner which is arranged at a preheating burner opening of the gasification furnace and is connected with an air inlet pipeline; the ignition structure penetrates through the preheating burner and extends into the gasification furnace; a steam pumping valve is arranged at an inlet of the steam pumping device; a natural gas valve; the temperature sensor is mounted in the gasification furnace; the pressure adjusting equipment is arranged at an inlet of the steam extractor; the main controller is in signal connection with the temperature sensor and is in signal connection with the first combustion controller and the second combustion controller, the first combustion controller is in signal connection with the steam extraction valve, and the second combustion controller is in signal connection with the natural gas valve. According to the utility model, the technical problems of large workload of operators, high oven drying cost and potential safety hazards caused by flameout and tempering due to negative pressure fluctuation due to the fact that the oven drying of the gasification furnace in the prior art depends on manpower are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gasification furnace technical field especially relates to a kind of automatic ignition of gasification furnace oven device. BACKGROUND

[0002] Gasification furnace needs to replace burner periodically when long-term operation, and the state of gasification furnace's furnace brick, quenching ring and downcomer is checked simultaneously to determine whether gasification furnace has the condition of replacing burner and continuing operation. At present, artificial naked eye observation is still mainly used when checking, but the temperature in gasification furnace is high, which can cause harm to the observer, and the distance from the top of gasification furnace to the quenching ring and the downcomer is far, so the naked eye observation effect is limited, and misjudgment is easily caused.

[0003] In view of the above problems, the patent document with the authorization announcement number CN215956473U discloses an oven monitoring device for gasification furnace, which comprises a monitor and a wireless controller. The monitor comprises a support frame and a camera mounted on the support frame. The support frame comprises a support table with three support legs hinged to the support table. A transparent protective cover is mounted on the lower surface of the support table. The camera is located in the transparent protective cover and mounted on the lower surface of the support table. An air inlet pipe and an air outlet pipe are provided in the transparent protective cover to communicate with the inner cavity of the transparent protective cover. In addition, a transmitting antenna connected to the camera is also mounted on the support table to enable the wireless controller and the camera to communicate wirelessly.

[0004] It can be seen that the above-mentioned device can control the camera of the monitor through the wireless controller to realize remote and accurate observation of the gasification furnace. However, the following problems still exist in the use process: 1. The gasification furnace is usually manually ovens, which requires the cooperation of central control operators and on-site operators to frequently adjust the steam valve and natural gas valve, which not only increases the labor intensity of personnel, but also relies too much on the experience of operators, increasing the workload of operators and the cost of oven. 2. Oven in rainy weather is easy to cause misfire due to insufficient oxygen content in the combustion air entering the preheating burner. 3. During the oven process, the negative pressure fluctuates due to the fluctuation of the extracted steam pressure, which causes misfire and backfire, which poses a safety hazard. 4. The on-site personnel need to insert the ignition gun into the preheating burner before ignition, and there may be a leakage of flammable and explosive gas inside and outside the preheating burner during the warming-up process after ignition, which poses a safety hazard. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of automatic ignition of gasification furnace oven device to solve the technical problems that gasification furnace oven in prior art relies too much on manual, which leads to large workload of operators and high oven cost, and misfire and backfire exist due to negative pressure fluctuation, which poses a safety hazard.

[0006] To solve the above problems, the automatic ignition of gasification furnace oven device provided by the utility model adopts the following technical solutions:

[0007] An automatic ignition and baking device of a gasification furnace comprises:

[0008] A preheating burner is installed at a preheating burner port of the top of the gasification furnace and connected with an air inlet pipeline;

[0009] An ignition structure penetrates through the preheating burner and extends into the gasification furnace;

[0010] A steam extractor is installed on a steam pipeline network, an extraction steam valve is installed at the inlet of the steam extractor, one end of the steam pipeline network penetrates through the preheating burner and extends into the gasification furnace, and the other end is connected with a steam source;

[0011] A temperature sensor is installed in the gasification furnace for monitoring the temperature of the gasification furnace;

[0012] A pressure regulating device is installed on the steam pipeline network at the inlet of the steam extractor for regulating the pressure fluctuation of the steam pipeline network;

[0013] A natural gas valve is installed on a natural gas pipeline, one end of the natural gas pipeline is connected with a natural gas source, and the other end penetrates through the preheating burner and is inserted into the gasification furnace;

[0014] A main controller is signal connected with the temperature sensor, signal connected with a first combustion controller and a second combustion controller, the first combustion controller is signal connected with the extraction steam valve, and the second combustion controller is signal connected with the natural gas valve, for receiving the temperature signal of the temperature sensor and issuing instructions to the first combustion controller and the second combustion controller according to the received temperature signal, so as to control the opening degree of the extraction steam valve and the natural gas valve.

[0015] The automatic ignition and baking device of the gasification furnace has the following beneficial effects:

[0016] 1. By installing a temperature sensor in the gasification furnace to monitor the temperature in the gasification furnace in real time, signal connecting the main controller with the temperature sensor, the first combustion controller and then the second combustion controller, signal connecting the first combustion controller with the extraction steam valve at the inlet of the steam extractor, and signal connecting the second combustion controller with the natural gas valve on the natural gas pipeline, receiving the temperature signal through the main controller and issuing instructions to the first combustion controller and the second combustion controller according to the received temperature signal, so as to control the opening degree of the extraction steam valve and the natural gas valve, without manually operating the extraction steam valve and the natural gas valve, reducing the workload of the operator, accurately controlling the natural gas consumption, improving the natural gas combustion efficiency, and reducing the baking cost;

[0017] 2. By setting the pressure regulating device on the steam pipe network and at the inlet of the steam extractor, the pressure fluctuation in the steam pipe network can be remotely monitored, and the flameout and backfire caused by negative pressure fluctuation can be effectively avoided.

[0018] Through the above setting, the utility model effectively solves the technical problems in the prior art that the oven drying of the gasification furnace relies too much on manual operation, resulting in a large workload for the operator and high oven drying cost, and the safety hazard of flameout and backfire caused by negative pressure fluctuation.

[0019] Further, the natural gas pipeline is connected with a ventilation pipeline for introducing plant air into the gasification furnace, and the ventilation pipeline is provided with an adjusting valve.

[0020] Further, the natural gas pipeline comprises a natural gas main pipeline, the natural gas main pipeline is sequentially connected with a first branch pipeline, a second branch pipeline and a third branch pipeline along the conveying direction of the natural gas, the first branch pipeline, the second branch pipeline and the third branch pipeline are respectively provided with a first valve, a second valve and a third valve, the end of the first branch pipeline is connected with a permanent light, the end of the ventilation pipeline intersects with the third branch pipeline and is connected with a flow combining pipe, the end of the ventilation pipeline is located on the side of the third valve away from the natural gas source, and the ends of the first branch pipeline, the second branch pipeline and the flow combining pipe all extend into the gasification furnace.

[0021] Further, the radial dimension of the second branch pipeline is greater than the radial dimension of the flow combining pipe.

[0022] Further, the flow combining pipe is sleeved in the second branch pipeline.

[0023] Further, the pressure regulating device is a self-powered steam pressure stabilizing valve or a pressure stabilizing buffer tank.

[0024] Further, the ignition structure comprises a high-temperature-resistant ceramic ignition electrode located in the gasification furnace, the high-temperature-resistant ceramic ignition electrode is connected with an external power supply, and the switch of the external power supply is located in the central control room DCS system and the on-site local operation panel.

[0025] Beneficial effect: the switch of the external power supply is located in the central control room DCS system and the on-site local operation panel, so that remote ignition and local ignition can be realized.

[0026] Further, a flame detector is installed on the preheating burner, a flame observation hole is formed in the top surface of the preheating burner, a high-temperature-resistant high-definition camera is arranged above the flame observation hole, and the high-temperature-resistant high-definition camera is signal-connected with the monitoring equipment in the central control room.

[0027] Further, a negative pressure gauge is arranged on the steam pipe network between the steam extractor and the gasification furnace.

[0028] Further, the temperature sensor is a thermocouple. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the application are illustrated. In the drawings, identical or similar reference numerals denote identical or similar elements, wherein:

[0030] Figure 1 Structure diagram of embodiment 1 of the automatic ignition furnace baking device provided by the present application;

[0031] Figure 2 Structure diagram of embodiment 2 of the automatic ignition furnace baking device provided by the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, preheating burner; 2, gasification furnace; 3, air inlet pipeline; 4, steam extractor; 5, steam pipe network; 6, temperature sensor; 7, self-operated steam pressure stabilizing valve; 8, natural gas valve; 9, main controller; 10, first combustion controller; 11, second combustion controller; 12, ventilation pipeline; 13, natural gas main pipeline; 14, first branch pipe; 15, second branch pipe; 16, third branch pipe; 17, first valve; 18, second valve; 19, third valve; 20, permanent light; 21, manifold; 22, high-temperature-resistant ceramic ignition electrode; 23, flame detector; 24, flame observation hole; 25, high-temperature-resistant high-definition camera; 26, negative pressure gauge; 27, regulating valve; 28, extraction steam valve; 29, pressure stabilizing buffer tank. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and those skilled in the art should know that the embodiments described below are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] After introducing the basic principles of the present application, various non-limiting embodiments of the present application will be specifically introduced below. Any element quantity in the drawings is used for example and not for limitation, and any naming is only used for distinction and does not have any limiting meaning.

[0036] The principles and spirits of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0037] Embodiment 1 of the automatic ignition furnace baking device provided by the present application:

[0038] like Figure 1 As shown, the automatic ignition and baking device of the gasifier 2 includes a preheating burner 1, an ignition structure, a steam pipeline network 5, a steam extractor 4, a natural gas pipeline, a natural gas valve 8, a temperature sensor 6, a pressure regulating device, a main controller 9, a first combustion controller 10, and a second combustion controller 11.

[0039] The preheating burner 1 is installed at the furnace opening on the top of the gasifier 2 and is connected to the air inlet pipe 3. A filter screen is installed at the air inlet of the air inlet pipe 3. The ignition structure runs from top to bottom through the preheating burner 1 and extends into the gasifier 2. The left end of the steam pipeline 5 extends into the gasifier 2, and the right end is connected to the steam source. A steam extractor 4 is installed on the steam pipeline 5, and a steam extraction valve 28 is installed at the inlet of the steam extractor 4. The left end of the natural gas pipeline is inserted into the gasifier 2, and the right end is connected to the natural gas source. A natural gas valve 8 is installed on the natural gas pipeline. A temperature sensor 6 is installed... Installed inside the gasifier 2, it is used to monitor the furnace temperature of the gasifier 2; the main controller 9 is signal-connected to the temperature sensor 6, and also to the first combustion controller 10 and the second combustion controller 11. The first combustion controller 10 is signal-connected to the extraction steam valve 28, and the second combustion controller 11 is signal-connected to the natural gas valve 8, so as to receive the temperature signal from the temperature sensor 6, and send instructions to the first combustion controller 10 and the second combustion controller 11 according to the received temperature signal, thereby controlling the opening degree of the extraction steam valve 28 and the natural gas valve 8.

[0040] Regarding the ignition structure: The ignition structure includes a high-temperature resistant ceramic ignition electrode 22 located inside the gasifier 2. The high-temperature resistant ceramic ignition electrode 22 is connected to an external power supply, and the switch for the external power supply is located in the central control room.

[0041] To facilitate observation of the ignition and baking conditions inside the gasifier 2, a flame detector 23 is installed on the preheating burner 1. A flame observation hole 24 is provided on the top surface of the preheating burner 1. A high-temperature resistant high-definition camera 25 is installed above the flame observation hole 24. The high-temperature resistant high-definition camera 25 is connected to the monitoring equipment in the central control room.

[0042] Regarding steam pipeline 5. A negative pressure gauge 26 is installed on steam pipeline 5 between steam extractor 4 and gasifier 2, and a steam flow meter is installed between pressure regulating equipment and steam extractor 4.

[0043] To compensate for the lack of oxygen in the ventilation duct 12 during the rainy summer season, a ventilation duct 12 is also connected to the natural gas pipeline to introduce factory air into the gasifier 2. A regulating valve 27 is installed on the ventilation duct 12.

[0044] About natural gas pipeline. The natural gas pipeline includes a natural gas main pipeline 13, a first branch pipeline 14, a second branch pipeline 15 and a third branch pipeline 16 are sequentially connected on the natural gas main pipeline 13 along the conveying direction of the natural gas, first, second and third valve doors 17, 18 and 19 are respectively arranged on the first, second and third branch pipelines 14, 15 and 16, an eternal light 20 is connected at the end of the first branch pipeline 14, the end of the ventilation pipeline 12 intersects with the third branch pipeline 16 and is connected with a flow pipe 21, the end of the ventilation pipeline 12 is located at the left side of the third valve door 19, and the ends of the first, second and third branch pipelines 14, 15 and 21 all extend into the gasification furnace 2.

[0045] Wherein, the natural gas valve 8 is located on the natural gas main pipeline 13, the radial dimension of the second branch pipeline 15 is greater than that of the flow pipe 21, the flow pipe 21 is sleeved in the second branch pipeline 15, and a natural gas flow meter is further arranged on the natural gas main pipeline 13.

[0046] It should be noted that the pressure regulating device is a self-powered steam pressure stabilizing valve 7, the steam extractor 4 is a start-up extractor, and the temperature sensor 6 is a thermocouple.

[0047] The working principle of the automatic ignition furnace baking device of the gasification furnace 2 is as follows:

[0048] Firstly, the first valve door 17 and the third valve door 19 are opened, the steam extraction valve door 28 and the natural gas valve door 8 are controlled to be opened through the main controller 9, the switch of the external power supply is turned on in the central control room, steam is introduced through the steam extractor 4 and then is vented, so that the pressure at the steam extractor 4 is negative pressure, the gas in the hearth is also vented through the steam extractor 4, so that the pressure in the hearth becomes negative pressure, and then the wind is introduced into the gasification furnace 2 through the air inlet pipeline 3, the wind is used as a combustion supporter to realize the ignition in the gasification furnace 2;

[0049] Then, the flame condition in the gasification furnace 2 is observed through the high-temperature high-definition camera and the flame observation hole 24, as the furnace temperature continuously rises, the second valve door 18 is opened to ensure the overall temperature rising effect of the gasification furnace 2, and the natural gas is introduced into the gasification furnace 2 through the second branch pipeline 15 and the third branch pipeline 16.

[0050] In the process of baking the furnace, the temperature sensor 6 monitors the temperature in the gasification furnace 2 in real time and transmits the temperature signal to the main controller 9, the main controller 9 sends instructions to the first combustion controller 10 and the second combustion controller 11 according to the received temperature signal, so as to control the opening degree of the steam extraction valve door 28 and the natural gas valve door 8.

[0051] The embodiment 2 of the automatic ignition furnace baking device of the gasification furnace provided by the utility model is as follows:

[0052] The difference between the embodiment 2 and the embodiment 1 mainly lies in that:

[0053] In Example 1, the pressure regulating device is a self-operated steam pressure stabilizing valve.

[0054] In this embodiment, as shown in Figure 2 the pressure regulating device is a pressure stabilizing buffer tank 29.

[0055] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the scheme of the present application and simplifying the description, and are not explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present application.

[0056] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

Claims

1. An automatic ignition and drying device for a gasifier, characterized in that, include: The preheating burner is installed at the preheating burner inlet on the top of the gasifier and is connected to an air inlet pipe. An ignition structure that penetrates the preheating burner and extends into the gasifier; A steam extractor is installed on the steam pipeline network. A steam extraction valve is installed at the inlet of the steam extractor. One end of the steam pipeline network passes through the preheating burner and extends into the gasifier. The other end is connected to the steam source. A temperature sensor is installed inside the gasifier to monitor the gasifier's temperature. A pressure regulating device, which is installed on the steam pipeline and located at the inlet of the steam extractor, is used to regulate pressure fluctuations in the steam pipeline. A natural gas valve is installed on a natural gas pipeline, one end of which is connected to a natural gas source, and the other end passes through the preheating burner and is inserted into the gasifier. The main controller is connected to the temperature sensor and to the first and second combustion controllers. The first combustion controller is connected to the extraction steam valve and the second combustion controller is connected to the natural gas valve. The main controller is used to receive the temperature signal from the temperature sensor and issue instructions to the first and second combustion controllers based on the received temperature signal, thereby controlling the opening degree of the extraction steam valve and the natural gas valve.

2. The automatic ignition firing-up device of the gasification furnace according to claim 1, characterized by, The natural gas pipeline is connected to a ventilation duct for supplying factory air into the gasifier, and the ventilation duct is equipped with a regulating valve.

3. The automatic ignition firing-up device of the gasification furnace according to claim 2, characterized by, The natural gas pipeline includes a main natural gas pipeline, on which a first branch pipe, a second branch pipe, and a third branch pipe are connected sequentially along the natural gas transportation direction. A first valve, a second valve, and a third valve are respectively installed on the first branch pipe, the second branch pipe, and the third branch pipe. A continuous light is connected to the end of the first branch pipe. The end of the ventilation duct intersects with the third branch pipe and is connected to a manifold. The end of the ventilation duct is located on the side of the third valve away from the natural gas source. The ends of the first branch pipe, the second branch pipe, and the manifold all extend into the gasifier.

4. The automatic ignition firing-up device of the gasification furnace according to claim 3, characterized by, The radial dimension of the second branch pipe is greater than the radial dimension of the manifold.

5. The automatic ignition firing-up device of the gasification furnace according to claim 4, characterized by, The manifold is installed inside the second branch pipe.

6. The automatic ignition firing-up device of a gasification furnace according to any one of claims 1 to 5, characterized in that, The pressure regulating device is a self-regulating steam pressure regulating valve or a pressure regulating buffer tank.

7. The automatic ignition firing-up apparatus of a gasification furnace according to any one of claims 1 to 5, characterized by The ignition structure includes a high-temperature resistant ceramic ignition electrode located inside the gasifier. The high-temperature resistant ceramic ignition electrode is connected to an external power supply, and the switch of the external power supply is located in the central control room DCS system and the local operation panel.

8. The automatic ignition firing-up apparatus of a gasification furnace according to any one of claims 1 to 5, characterized by, A flame detector is installed on the preheating burner, and a flame observation hole is opened on the top surface of the preheating burner. A high-temperature resistant high-definition camera is installed above the flame observation hole, and the high-temperature resistant high-definition camera is connected to the monitoring equipment in the central control room.

9. The automatic ignition firing-up apparatus of a gasification furnace according to any one of claims 1 to 5, characterized by, A negative pressure gauge is installed on the steam pipeline between the steam extractor and the gasifier.

10. The automatic ignition firing-up apparatus of a gasification furnace according to any one of claims 1 to 5, characterized by, The temperature sensor is a thermocouple.

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