High-temperature and high-humidity reducing flue gas generating device

Abstract

The invention belongs to the technical field of combustion experiments, and particularly discloses a high-temperature and high-humidity reducing flue gas generating device which comprises a vertical combustion system, and a flue gas humidity control system and a smoke exhaust condensation system which are in clearance fit are arranged on the vertical combustion system. The smoke humidity control system is matched with a liquid fuel supply system and a gas supply system which are arranged on the vertical combustion system and matched with each other; the smoke exhaust condensation system is connected with a detachable source emission detection site device; the combustion experiment table is used for simulating high-temperature and high-humidity flue gas, the working conditions of independent combustion and mixed combustion of gas and liquid can be achieved, real-time detection of the simulated high-temperature and high-humidity flue gas is achieved in the visual chimney, and therefore the flue gas state in the high-temperature and high-humidity state is accurately simulated; the smoke is detected in real time in the visual chimney, the working state of the detector can be observed in real time, and the smoke environment in the visual chimney can be monitored in real time.

Description

Technical Field

[0001] The invention belongs to the technical field of combustion experiments, and in particular relates to a high-temperature and high-humidity reducing smoke generating device. Background Art

[0002] Flue gas is a mixture of gases and smoke, and is the main cause of air pollution in residential areas. The composition of flue gas is very complex, including water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons and nitrogen oxides, and smoke includes fuel ash, coal particles, oil droplets and high-temperature cracking products.

[0003] Flue gas is mostly simulated by combustion experiments. By simulating flue gas, it is convenient to remove harmful substances in the flue gas. The flue gas generated in existing factories or parks is mostly high-temperature and high-humidity flue gas, and most of the existing combustion experiment platforms for simulating flue gas do not take water vapor in the flue gas into consideration or do not accurately quantify the water vapor content, resulting in a large deviation between the simulated flue gas composition and the actual flue gas composition, making it difficult to accurately simulate the composition of the real flue gas in the factory or park environment, affecting the debugging and experiment of the flue gas pollution source tracing detection equipment. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-temperature and high-humidity reducing flue gas generating device capable of simulating high-temperature and high-humidity flue gas.

[0005] Based on the above purpose, the present invention is achieved through the following technical solutions: A high-temperature and high-humidity reducing flue gas generating device includes a vertical combustion system, on which a flue gas humidity control system and a smoke exhaust condensation system with clearance fit are provided, the flue gas humidity control system cooperates with a liquid fuel supply system and a gas supply system which cooperate with each other and are arranged on the vertical combustion system; the smoke exhaust condensation system is connected with a detachable source emission detection site device; the vertical combustion system, the flue gas humidity control system, the smoke exhaust condensation system, the liquid fuel supply system, the gas supply system, and the source emission detection site device are all installed on a generating frame.

[0006] Preferably, the vertical combustion system includes a combustion chamber, a fuel inlet, an air inlet and a water vapor inlet with clearance fit are provided at the lower portion of the combustion chamber, and a detachable quartz plate burner is provided in the combustion chamber; an observation window is provided on the side of the combustion chamber, and the quartz plate burner includes a combustion disk, a combustion tube and a supply tube are provided on both sides of the combustion disk, supply holes are provided on the side of the supply tube that match the fuel inlet, the air inlet and the water vapor inlet, respectively, and three combustion tubes connected to the supply tube are provided in the combustion tube; the air inlet and the water vapor inlet are arranged at the lower part of the side of the combustion chamber.

[0007] Preferably, the gas supply system includes at least one fuel gas cylinder, an oxygen cylinder and a compressed air tank, the oxygen cylinder and the compressed air tank are respectively connected to a combustion-supporting pipeline that matches the combustion chamber through a pressure reducing valve, the combustion-supporting pipeline is connected to the air inlet through a mixing pipeline I, and a mixer I is provided on the mixing pipeline I; the fuel gas cylinder is connected to a gas pipeline through a pressure reducing valve, the gas pipeline is provided with a gas flowmeter, and the gas pipeline is connected to the mixing pipeline II arranged on the fuel inlet through a mixer II; the combustion-supporting pipeline is respectively provided with a mass flow controller, a one-way valve and a control valve; the gas pipeline is respectively provided with a mass flow controller and a one-way valve; the mixing pipeline I is connected to the gas pipeline through a control valve; the gas in the fuel gas cylinder, the oxygen cylinder and the compressed air tank is reduced in pressure by the cylinder pressure reducing valve and then metered by the mass flow controller; the one-way valve can prevent gas cross-flow; the gas fuel, oxygen and air are mixed online through the mixer I, and the mixer I adopts the SV static mixer design, which can make the mixed gas more uniform.

[0008] Preferably, the liquid fuel supply system includes a liquid fuel self-feeding tank, on which a precision flow control pump is provided, the precision flow control pump is connected to a VOC generator, the VOC generator is connected to the mixer II via a liquid fuel pipeline, and a one-way valve is provided on the liquid fuel pipeline; the liquid fuel self-feeding tank is metered by the precision flow control pump; the VOC generator can adjust the atomization flow and temperature of the liquid fuel.

[0009] Preferably, the smoke exhaust condensation system includes a smoke duct arranged at the top of the combustion chamber, and the smoke duct is provided with a condensation sleeve and a low-temperature water thermostatic tank matched with the condensation sleeve; the low-temperature water thermostatic tank can realize the temperature regulation of the condensing working fluid, which can reduce the smoke exhaust temperature, so as to simulate the factory smoke environment as much as possible.

[0010] Preferably, the flue gas humidity control system includes a water tank, which is connected to a water vapor generator via a peristaltic pump, and the water vapor generator is connected to a water vapor inlet via a water vapor pipe; the peristaltic pump can achieve precise control of the amount of water vapor added; the water vapor generator can adjust the temperature of the generated water vapor.

[0011] Preferably, the source emission detection site device includes a visual chimney connected to the flue gas duct, the bottom end of the visual chimney is connected to the smoke exhaust duct, the smoke exhaust duct is provided with a carbon box, and the tail end of the smoke exhaust duct is provided with an induced draft fan; the top of the visual chimney is connected to a detection port through a quick-connect flange, and the detection port is provided with a detector that matches the visual chimney; the visual chimney is provided with a temperature and humidity sensor, and the temperature and humidity sensor monitors the smoke environment in the visual chimney in real time.

[0012] Preferably, it also includes a control system, which includes a manual control device, an AI intelligent instrument module matched with a gas flow meter, a mass flow controller, a control valve, a precision flow control pump, and a detector, an analog input and output module, a digital input and output module, and a temperature control module matched with a temperature and humidity sensor; the control system adopts a monomer control, with little interference between modules and high stability, and adopts RS485 communication mode to connect with the configuration software; the main modules include a temperature control module, an analog input and output module, and a digital input and output module; the control system fully adopts industrial design and manufacturing standards, and the system has multi-level safety protection design and configuration; the automatic control system adopts multiple strict safety control logics: when the temperature reaches the high limit (Hi), the system generates an audible and visual alarm to remind the operator to handle it; when the temperature reaches the high-high limit (HiHi), the system will actively cut off the heating power supply and take more related logical operations.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can realize accurate quantitative supply of gas fuel and combustion-supporting agent air or oxygen through a set of accurate quantitative control gas supply system; can realize free adjustment of liquid fuel feed amount through a set of liquid fuel supply system; can realize direct observation of combustion flame through a set of combustion chamber; can realize free switching of gas combustion and liquid combustion through free switching of gas fuel and liquid fuel, and is convenient to select suitable combustion fuel according to experimental needs; the smoke humidity control system can realize quantitative supply of water vapor by equipping with quantitative water vapor generator, so as to achieve the purpose of adjusting the moisture content in smoke, and is convenient to adjust smoke according to experimental needs. moisture in the air; by equipping with a smoke exhaust condensation system, the controllable adjustment of the flue gas temperature is achieved; by equipping with a detector in a detachable source emission detection site device, the flue gas is detected in real time in the visual chimney, and the real-time observation of the working status of the detector can be achieved; the flue gas outlet and the front end of the source emission detector installation site are equipped with high-precision temperature and humidity sensors, which can monitor the flue gas environment in the visual chimney in real time; the flue of the present invention adopts a visual chimney, which is a combustion test bench for simulating high-temperature and high-humidity flue gas, and can realize the working conditions of separate combustion and mixed combustion of gas and liquid, and realize real-time detection of simulated high-temperature and high-humidity flue gas in the visual chimney, so as to accurately simulate the flue gas state under high temperature and high humidity conditions.

[0014] 2. The gas supply system of the present invention is composed of 6 gas lines, including 4 fuel gases, 1 air, and 1 O2; each gas line is controlled and accurately measured by a mass flow controller; O2 simulating air components and air enter the mixer I in a certain proportion for online mixing, and then enter the combustion chamber, and the fuel gas enters the combustion chamber through the gas pipeline; the liquid fuel supply system is composed of a VOC generator and a precision flow control pump, and the precision flow control pump can realize quantitative control of the liquid fuel. The liquid fuel is atomized by the VOC generator and enters the combustion chamber, thereby realizing the mixed combustion of liquid fuel and gas fuel, the smoke exhaust condensation system can realize the regulation of the smoke temperature, and the water vapor generator can realize the regulation of the smoke humidity.

[0015] 3. This flue gas generating device can be used to simulate the high-temperature and high-humidity flue gas generated by factories or parks, and can be used for the debugging and experiments of flue gas pollution source tracing detection equipment in environmental problems. This flue gas generating device can be used by disciplines such as energy and power engineering, chemistry and chemical engineering, materials science and engineering, etc. The selected combustion test bench technology is leading in China, with reliable performance, which can meet the testing needs of the test platform and carry out higher-end scientific research to meet the current growing research needs, provide equipment support for the development of ESI disciplines and the construction of national first-class majors, and have outstanding cost performance; at the same time, it can also support the relevant experimental content of innovative projects, provide good hardware support and obtain data basis for the smooth completion of relevant national projects and fund projects, and has a very wide range of applications.

[0016] 4. This flue gas generating device is based on the design requirements of the combustion experimental platform and is designed in combination with many years of design and manufacturing experience. This flue gas generating device can realize the combustion of a single gas, a single liquid, and a mixed combustion of gas and liquid. It can effectively simulate the complex composition of factory flue gas. The feed amount of gas fuel and liquid fuel can be freely adjusted, and the operation is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the present invention in Example 1; Figure 2 is a schematic structural diagram of the combustion chamber in Example 1; Figure 3 is a schematic structural diagram of the quartz plate burner in Example 1; Figure 4 is a schematic structural diagram of the quartz plate burner in Example 1; Figure 5 It is a construction schematic diagram of the present invention in Example 1.

[0018] In the figure, water tank 1, peristaltic pump 2, water vapor generator 3, water vapor pipeline 4, combustion chamber 5, flue gas pipeline 6, condensation sleeve 7, low-temperature water constant temperature bath 8, visual chimney 9, smoke exhaust pipe 10, temperature and humidity sensor 11, liquid fuel self-feeding box 12, precision flow control pump 13, VOC generator 14, liquid fuel pipeline 15, mixing pipeline II 16, mixer II 17, mixing pipeline I 18, mixer I 19, combustion-supporting pipeline 20, gas pipeline 21, control valve 22, fuel gas cylinder 23, oxygen cylinder 24, compressed air tank 25, pressure reducing valve 26, mass flow controller 27, one-way valve 28, control valve 29. DETAILED DESCRIPTION

[0019] The present invention is further described below by means of specific examples, but the scope of the present invention is not limited thereto.

[0020] Example 1 A high-temperature and high-humidity reducing smoke generating device, the structure of which is as follows Figure 1-Figure 5 As shown, it includes a vertical combustion system, on which a flue gas humidity control system and a smoke exhaust condensation system with clearance fit are provided, the flue gas humidity control system cooperates with a liquid fuel supply system and a gas supply system which cooperate with each other and are arranged on the vertical combustion system; the smoke exhaust condensation system is connected with a detachable source emission detection site device.

[0021] The vertical combustion system comprises a combustion chamber 5 , the lower part of which is provided with a fuel inlet, an air inlet and a water vapor inlet with clearance fit, and a detachable quartz plate burner is arranged in the combustion chamber 5 .

[0022] The gas supply system includes at least one fuel gas cylinder 23, an oxygen cylinder 24 and a compressed air tank 25. The oxygen cylinder 24 and the compressed air tank 25 are respectively connected to a combustion-supporting pipeline 20 that matches the combustion chamber 5 through a pressure reducing valve 26. The combustion-supporting pipeline 20 is connected to the air inlet through a mixing pipeline Ⅰ18, and a mixer Ⅰ19 is provided on the mixing pipeline Ⅰ18; the fuel gas cylinder 23 is connected to a gas pipeline 21 through a pressure reducing valve 26, and the gas pipeline 21 is connected to a mixing pipeline Ⅱ16 arranged on the fuel inlet through a mixer Ⅱ17; a mass flow controller 27, a one-way valve 28 and a control valve 29 are respectively provided on the combustion-supporting pipeline 20; a mass flow controller 27 and a one-way valve 28 are respectively provided on the gas pipeline 21; the mixing pipeline Ⅰ18 is connected to the gas pipeline 21 through a control valve 22.

[0023] The liquid fuel supply system includes a liquid fuel tank 12 , on which a precision flow control pump 13 is provided. The precision flow control pump 13 is connected to a VOC generator 14 , and the VOC generator 14 is connected to a mixer II 17 via a liquid fuel pipeline 15 .

[0024] The smoke exhaust condensation system comprises a visible smoke duct 6 arranged on the combustion chamber 5 , on which a condensation sleeve 7 and a low-temperature water constant temperature tank 8 matched with the condensation sleeve 7 are arranged.

[0025] The smoke humidity control system comprises a water tank 1 , which is connected to a water vapor generator 3 via a peristaltic pump 2 , and the water vapor generator 3 is connected to a water vapor inlet via a water vapor pipeline 4 .

[0026] The source emission detection site device includes a visual chimney 9 connected to the flue gas duct 6, and the bottom end of the visual chimney 9 is connected to the smoke exhaust duct 10; the top of the visual chimney 9 is connected to a detection port through a quick-connect flange, and the detection port is provided with a detector that matches the visual chimney 9; the visual chimney 9 is provided with a temperature and humidity sensor 11.

[0027] It also includes a control system, which includes a manual control device, an AI intelligent instrument module that cooperates with a mass flow controller 27, control valves 22, 29, a precision flow control pump 13, and a detector, an analog input and output module, a digital input and output module, and a temperature control module that cooperates with a temperature and humidity sensor 11.

[0028] A high-temperature and high-humidity reducing flue gas generating device adopts the following method, including the following steps: Ⅰ. Mixed combustion of liquid fuel and gaseous fuel; The control valve 22 is closed, and the gas supply system supplies gas through 6 gas lines, including 4 fuel gas cylinders 23 supplying fuel gas, 1 compressed air tank 25 supplying air, and 1 oxygen cylinder 24 supplying O2; the pressure is reduced by the pressure reducing valve 26 on the fuel gas cylinder 23, the oxygen cylinder 24 and the compressed air tank 25, the gas pipeline 21 and the combustion-supporting pipeline 20 are controlled and accurately measured by the mass flow controller 27, and the one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 and air simulating the air components enter the mixer Ⅰ19 through the mixing pipe Ⅰ18 in a certain proportion for online mixing, and then enter the combustion chamber 5 through the air inlet; the fuel gas flows to the mixer Ⅱ17 through the gas pipeline 21, and at the same time, the liquid fuel The supply system is composed of a VOC generator 14 and a precision flow control pump 13. The precision flow control pump 13 can realize quantitative control of the liquid fuel in the liquid fuel tank 12. The liquid fuel is atomized by the VOC generator 14 and flows into the liquid fuel pipeline 15. It is mixed online with the fuel gas in the mixer II 17. The mixed liquid fuel and gas fuel then enter the combustion chamber 5 through the fuel inlet through the mixing pipeline II 16, and are combined with the mixed air for combustion, thereby realizing the mixed combustion of liquid fuel and gas fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, and adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4, thereby realizing the adjustment of the humidity and temperature of the flue gas.

[0029] Ⅱ. Combustion of gaseous fuel; The control valve 22 is closed, and the gas supply system supplies gas through 6 gas lines, including 4 fuel gas cylinders 23 supplying fuel gas, 1 compressed air cylinder 25 supplying air, and 1 oxygen cylinder 24 supplying O2; the pressure is reduced by the pressure reducing valves 26 on the fuel gas cylinders 23, oxygen cylinders 24 and compressed air cylinders 25, and the gas pipeline 21 and the combustion-supporting pipeline 20 are controlled and accurately measured by the mass flow controller 27, and the one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 simulating the air component and the air are mixed in a certain proportion through the mixing pipeline I18 It enters the mixer Ⅰ19 for online mixing, and then enters the combustion chamber 5 through the air inlet; the fuel gas flows to the mixer Ⅱ17 through the fuel gas pipeline 21, and there is a one-way valve 28 on the liquid fuel pipeline 15. It passes through the mixing pipeline Ⅱ16 and enters the combustion chamber 5 through the fuel inlet, and is combined with the mixed air for combustion, thereby realizing the combustion of the gas fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, and adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4 to adjust the humidity and temperature of the flue gas.

[0030] III. Combustion of liquid fuels; When the liquid fuel and the gas fuel are mixed and burned; the control valve 22 is closed, and the gas supply system supplies gas through two gas routes, including a compressed air tank 25 to supply air and an oxygen cylinder 24 to supply O2; the pressure is reduced by the pressure reducing valve 26 on the fuel gas cylinder 23, the oxygen cylinder 24 and the compressed air tank 25, and the combustion-supporting pipeline 20 is controlled and accurately measured by the mass flow controller 27, and a one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 and air simulating the air components enter the mixer Ⅰ19 through the mixing pipeline Ⅰ18 in a certain proportion for online mixing, and then enter the combustion chamber 5 through the air inlet; liquid fuel supply system It is composed of a VOC generator 14 and a precision flow control pump 13. The precision flow control pump 13 can realize quantitative control of the liquid fuel in the liquid fuel tank 12. The liquid fuel is atomized by the VOC generator 14 and flows into the liquid fuel pipeline 15, flows into the mixing pipeline Ⅱ16 through the mixer Ⅱ17, enters the combustion chamber 5 through the fuel inlet through the mixing pipeline Ⅱ16, and is combined with the mixed air to burn, thereby realizing the combustion of the liquid fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4, thereby realizing the adjustment of the humidity and temperature of the flue gas.

[0031] IV. Condensation and detection of flue gas; The smoke exhaust condensation system collects the smoke in the combustion chamber 5 through the visualized smoke duct 6 at the top of the combustion chamber 5. The condensation sleeve 7 reduces the smoke temperature in the smoke duct 6 to simulate the factory smoke environment as much as possible. The low-temperature water constant temperature bath 8 can realize the temperature adjustment of the condensing medium of the condensation sleeve 7. The cooled smoke flows into the visualized chimney 9 of the source emission detection site device. The temperature and humidity sensor 11 and detector in the visualized chimney 9 are used to monitor and detect the smoke environment in real time. The smoke in the visualized chimney 9 is discharged through the smoke exhaust pipe 10 for post-processing. The quick-connect flange is used at the smoke duct connection to realize the rapid disassembly and assembly of the detector.

[0032] The smoke generating device can realize the combustion of single gas, single liquid and mixed combustion of gas and liquid, and can effectively simulate the complex composition environment of factory smoke. The feed amount of gas fuel and liquid fuel can be freely adjusted, and the operation is stable and reliable.

[0033] The control system adopts monomer control, with little interference between modules and high stability, and uses RS485 communication mode to connect with the configuration software; the main modules include temperature control module, analog input and output module, digital input and output module; the control system fully adopts industrial design and manufacturing standards, and the system has multi-level safety protection design and configuration; the automatic control system adopts multiple strict safety control logics: when the temperature reaches the high limit (Hi), the system generates sound and light alarms to remind the operator to deal with it; when the temperature reaches the high-high limit (HiHi), the system will actively cut off the heating power supply and take more related logical operations.

[0034] Example 2 A high-temperature and high-humidity reducing flue gas generating device is different from the embodiment 1 in that the gas supply system includes two fuel gas cylinders 23.

[0035] Example 3 A high-temperature and high-humidity reducing flue gas generating device is different from the embodiment 1 in that the gas supply system includes three fuel gas cylinders 23.

[0036] Example 4 A high-temperature and high-humidity reducing flue gas generating device is different from the embodiment 1 in that the gas supply system includes four fuel gas cylinders 23.

[0037] Example 5 A high-temperature and high-humidity reducing flue gas generating device is different from Example 1 in that: the mixing pipe II 16 is connected to the mixing pipe I 18 through a control valve.

[0038] Example 6 A high-temperature and high-humidity reducing flue gas generating device adopts the following method, including the following steps: Ⅰ. Mixed combustion of liquid fuel and gaseous fuel; The control valve 22 is closed, and the gas supply system supplies gas through 6 gas lines, including 4 fuel gas cylinders 23 supplying fuel gas, 1 compressed air tank 25 supplying air, and 1 oxygen cylinder 24 supplying O2; the pressure is reduced by the pressure reducing valve 26 on the fuel gas cylinder 23, the oxygen cylinder 24 and the compressed air tank 25, the gas pipeline 21 and the combustion-supporting pipeline 20 are controlled and accurately measured by the mass flow controller 27, and the one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 and air simulating the air components enter the mixer Ⅰ19 through the mixing pipe Ⅰ18 in a certain proportion for online mixing, and then enter the combustion chamber 5 through the air inlet; the fuel gas flows to the mixer Ⅱ17 through the gas pipeline 21, and at the same time, the liquid fuel The supply system is composed of a VOC generator 14 and a precision flow control pump 13. The precision flow control pump 13 can realize quantitative control of the liquid fuel in the liquid fuel tank 12. The liquid fuel is atomized by the VOC generator 14 and flows into the liquid fuel pipeline 15. It is mixed online with the fuel gas in the mixer II 17. The mixed liquid fuel and gas fuel then enter the combustion chamber 5 through the fuel inlet through the mixing pipeline II 16, and are combined with the mixed air for combustion, thereby realizing the mixed combustion of liquid fuel and gas fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, and adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4, thereby realizing the adjustment of the humidity and temperature of the flue gas.

[0039] Ⅱ. Combustion of gaseous fuel; The control valve 22 is closed, and the gas supply system supplies gas through 6 gas lines, including 4 fuel gas cylinders 23 supplying fuel gas, 1 compressed air cylinder 25 supplying air, and 1 oxygen cylinder 24 supplying O2; the pressure is reduced by the pressure reducing valves 26 on the fuel gas cylinders 23, oxygen cylinders 24 and compressed air cylinders 25, and the gas pipeline 21 and the combustion-supporting pipeline 20 are controlled and accurately measured by the mass flow controller 27, and the one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 simulating the air component and the air are mixed in a certain proportion through the mixing pipeline I18 It enters the mixer Ⅰ19 for online mixing, and then enters the combustion chamber 5 through the air inlet; the fuel gas flows to the mixer Ⅱ17 through the fuel gas pipeline 21, and there is a one-way valve 28 on the liquid fuel pipeline 15. It passes through the mixing pipeline Ⅱ16 and enters the combustion chamber 5 through the fuel inlet, and is combined with the mixed air for combustion, thereby realizing the combustion of the gas fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, and adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4 to adjust the humidity and temperature of the flue gas.

[0040] III. Combustion of liquid fuels; When the liquid fuel and the gas fuel are mixed and burned; the control valve 22 is closed, and the gas supply system supplies gas through two gas routes, including a compressed air tank 25 to supply air and an oxygen cylinder 24 to supply O2; the pressure is reduced by the pressure reducing valve 26 on the fuel gas cylinder 23, the oxygen cylinder 24 and the compressed air tank 25, and the combustion-supporting pipeline 20 is controlled and accurately measured by the mass flow controller 27, and a one-way valve 28 is used to prevent gas cross-flow; the control valve 29 is used to control the flow of the combustion-supporting pipeline 20; the O2 and air simulating the air components enter the mixer Ⅰ19 through the mixing pipeline Ⅰ18 in a certain proportion for online mixing, and then enter the combustion chamber 5 through the air inlet; liquid fuel supply system It is composed of a VOC generator 14 and a precision flow control pump 13. The precision flow control pump 13 can realize quantitative control of the liquid fuel in the liquid fuel tank 12. The liquid fuel is atomized by the VOC generator 14 and flows into the liquid fuel pipeline 15, flows into the mixing pipeline Ⅱ16 through the mixer Ⅱ17, enters the combustion chamber 5 through the fuel inlet through the mixing pipeline Ⅱ16, and is combined with the mixed air to burn, thereby realizing the combustion of the liquid fuel; and the water tank 1 realizes precise control of the amount of water vapor added through the peristaltic pump 2, adjusts the temperature of the generated water vapor through the water vapor generator 3, and enters the combustion chamber 5 through the water vapor pipeline 4, thereby realizing the adjustment of the humidity and temperature of the flue gas.

[0041] IV. Condensation and detection of flue gas; The smoke exhaust condensation system collects the smoke in the combustion chamber 5 through the visualized smoke duct 6 at the top of the combustion chamber 5. The condensation sleeve 7 reduces the smoke temperature in the smoke duct 6 to simulate the factory smoke environment as much as possible. The low-temperature water constant temperature bath 8 can realize the temperature adjustment of the condensing medium of the condensation sleeve 7. The cooled smoke flows into the visualized chimney 9 of the source emission detection site device. The temperature and humidity sensor 11 and detector in the visualized chimney 9 are used to monitor and detect the smoke environment in real time. The smoke in the visualized chimney 9 is discharged through the smoke exhaust pipe 10 for post-processing. The quick-connect flange is used at the smoke duct connection to realize the rapid disassembly and assembly of the detector.

[0042] The smoke generating device can realize the combustion of single gas, single liquid and mixed combustion of gas and liquid, and can effectively simulate the complex composition environment of factory smoke. The feed amount of gas fuel and liquid fuel can be freely adjusted, and the operation is stable and reliable.

[0043] The control system adopts monomer control, with little interference between modules and high stability, and uses RS485 communication mode to connect with the configuration software; the main modules include temperature control module, analog input and output module, digital input and output module; the control system fully adopts industrial design and manufacturing standards, and the system has multi-level safety protection design and configuration; the automatic control system adopts multiple strict safety control logics: when the temperature reaches the high limit (Hi), the system generates sound and light alarms to remind the operator to deal with it; when the temperature reaches the high-high limit (HiHi), the system will actively cut off the heating power supply and take more related logical operations.

[0044] The above description is only a preferred embodiment of the present invention, but is not limited to the above examples. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature and high-humidity reducing flue gas generating device, characterized in that: It comprises a vertical combustion system, on which a flue gas humidity control system and a smoke exhaust condensation system with clearance fit are provided, the flue gas humidity control system cooperates with a liquid fuel supply system and a gas supply system which cooperate with each other and are arranged on the vertical combustion system; the smoke exhaust condensation system is connected with a detachable source emission detection site device.

2. The high-temperature and high-humidity reducing smoke generating device according to claim 1, characterized in that: The vertical combustion system comprises a combustion chamber, a fuel inlet, an air inlet and a water vapor inlet with clearance fit are arranged at the lower part of the combustion chamber, and a detachable quartz plate burner is arranged in the combustion chamber.

3. The high-temperature and high-humidity reducing smoke generating device according to claim 2, characterized in that: The gas supply system includes at least one fuel gas cylinder, an oxygen cylinder and a compressed air tank. The oxygen cylinder and the compressed air tank are respectively connected to a combustion-supporting pipeline that matches the combustion chamber through a pressure reducing valve. The combustion-supporting pipeline is connected to the air inlet through a mixing pipeline I, and a mixer I is provided on the mixing pipeline I; the fuel gas cylinder is connected to a gas pipeline through a pressure reducing valve, and the gas pipeline is connected to a mixing pipeline II arranged on the fuel inlet through a mixer II; the combustion-supporting pipeline is respectively provided with a mass flow controller, a one-way valve and a control valve; the gas pipeline is respectively provided with a mass flow controller and a one-way valve; the mixing pipeline I is connected to the gas pipeline through a control valve.

4. The high-temperature and high-humidity reducing smoke generating device according to claim 3, characterized in that: The liquid fuel supply system comprises a liquid fuel self-feeding tank, on which a precision flow control pump is provided, the precision flow control pump is connected to a VOC generator, and the VOC generator is connected to a mixer II through a liquid fuel pipeline.

5. The high-temperature and high-humidity reducing smoke generating device according to claim 4, characterized in that: The smoke exhaust condensation system comprises a visible smoke pipe arranged on the combustion chamber, on which a condensation sleeve and a low-temperature water constant temperature tank matched with the condensation sleeve are arranged.

6. The high-temperature and high-humidity reducing smoke generating device according to claim 5, characterized in that: The smoke humidity control system comprises a water tank, the water tank is connected to a water vapor generator via a peristaltic pump, and the water vapor generator is connected to a water vapor inlet via a water vapor pipeline.

7. The high-temperature and high-humidity reducing smoke generating device according to claim 6, characterized in that: The source emission detection site device includes a visual chimney connected to the smoke duct, and the bottom end of the visual chimney is connected to the smoke exhaust duct; the top end of the visual chimney is connected to a detection port through a quick-connect flange, and the detection port is provided with a detector that matches the visual chimney; the visual chimney is provided with a temperature and humidity sensor.

8. The high-temperature and high-humidity reducing smoke generating device according to claim 1 or 7, characterized in that: It also includes a control system, which includes a manual control device, an AI intelligent instrument module that cooperates with a mass flow controller, a control valve, a precision flow control pump, and a detector, an analog input and output module, a digital input and output module, and a temperature control module that cooperates with a temperature and humidity sensor.

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