Quenching tower working condition monitoring system

Abstract

The utility model relates to a quenching tower working condition monitoring system which comprises a quenching tower, a cooling liquid supply device, a flue gas input device and a parameter monitoring device, the flue gas input device comprises a flue gas output pipeline, an induced draft fan assembly, a heating assembly and a flue gas input pipeline which are sequentially connected in the flue gas flowing direction. The parameter monitoring device comprises a monitoring assembly, a first instrument assembly, a second instrument assembly and a third instrument assembly. The first instrument assembly is arranged at one end, close to the quench tower, of the flue gas output pipeline so as to detect the temperature and pressure of outlet flue gas; the second instrument assembly is arranged at one end, close to the quench tower, of the flue gas input pipeline so as to detect the temperature, pressure and flow of inlet flue gas; the third instrument assembly comprises a plurality of temperature measuring layers and a flow velocity detection layer, at least the temperature measuring layers are arranged from top to bottom along the quench tower, and the flue gas monitoring device has the advantages that the accuracy and precision of flue gas monitoring are improved, and the whole system is convenient to regulate and control so as to reduce generation of dioxin.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flue gas treatment equipment, in particular to a quench tower working condition monitoring system. BACKGROUND

[0002] The dioxin with toxicity is produced in the hazardous waste incineration process, in order to reduce the generation of dioxin, the high temperature flue gas produced by incineration waste should adopt the quenching treatment, makes the flue gas temperature to drop below 200 DEG C in 1.0 seconds, reduces the residence time of flue gas in 200~500 DEG C temperature zone, strictly controls the temperature, residence time and flow condition of flue gas of combustion chamber simultaneously, therefore realizes the real-time monitoring of quench tower working condition can greatly optimize the control of quench tower, effectively reduces the generation of dioxin.

[0003] However, at present in the production process, the operation state of hazardous waste incineration key equipment is difficult to judge, lacks advanced and effective monitoring means, especially lacks the monitoring technology of three-dimensional flue gas flow field parameters, quenching time, import and export flue gas related index parameters, cooling liquid related index parameters and the like of this core equipment quench tower. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model lies in overcoming the defects in the prior art, so as to provide a quench tower working condition monitoring system.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A quench tower working condition monitoring system, including quench tower, cooling liquid supply device, flue gas input device and parameter monitoring device;

[0007] The flue gas input device includes the flue gas output pipeline, the induced draft fan assembly, the heating assembly and the flue gas input pipeline connected in sequence along the flue gas flow direction, the output end of the flue gas input pipeline is connected with the upper end of the quench tower, and the flue gas output pipeline is connected with the lower end of the quench tower;

[0008] The parameter monitoring device includes a monitoring assembly, a first instrument assembly, a second instrument assembly and a third instrument assembly, and the first instrument assembly, the second instrument assembly and the third instrument assembly are all in communication connection with the monitoring assembly;

[0009] The first instrument assembly is arranged at one end of the flue gas output pipeline close to the quench tower to detect the temperature and pressure of outlet flue gas;

[0010] The second instrument assembly is arranged at one end of the flue gas input pipeline close to the quench tower to detect the temperature, pressure and flow of inlet flue gas;

[0011] The third instrument assembly comprises a temperature measuring layer and a flow rate detecting layer, and at least the temperature measuring layer is arranged from top to bottom along the quenching tower.

[0012] Preferably, the first instrument assembly comprises an outlet pressure sensor and an outlet temperature sensor.

[0013] Preferably, the second instrument assembly comprises an inlet pressure sensor, an inlet temperature sensor and an inlet flow sensor.

[0014] Preferably, the temperature measuring layer is arranged from top to bottom with at least four layers, and the flow rate detecting layer is arranged below the lowermost temperature measuring layer.

[0015] Preferably, each temperature measuring layer is provided with at least two layer temperature sensors, and the flow rate detecting layer is provided with a flute type pipe speed sensor and a flute type pipe speed meter.

[0016] Preferably, the cooling liquid supply device comprises a liquid supply pipe and an air supply pipe.

[0017] The parameter monitoring device further comprises a fourth instrument assembly arranged on the liquid supply pipe and in communication connection with the monitoring assembly.

[0018] The fourth instrument assembly comprises a cooling water flow sensor and a cooling liquid pressure sensor.

[0019] Preferably, the heating assembly comprises an electric heater and an electric heating control box.

[0020] The output end of the electric heater is provided with a heating flue gas temperature sensor, and the heating flue gas temperature sensor is in electrical connection with the electric heating control box.

[0021] The electric heating control box is in communication connection with the monitoring assembly.

[0022] Preferably, the induced draft fan assembly comprises an induced draft fan and an induced draft fan distribution cabinet.

[0023] The induced draft fan distribution cabinet is in communication connection with the monitoring assembly.

[0024] Preferably, the induced draft fan assembly and the heating assembly are connected through a conveying pipe, and the conveying pipe is provided with an adjusting valve and an exhaust valve.

[0025] The flue gas output pipe is provided with a drain valve and an air inlet valve.

[0026] Preferably, the monitoring assembly comprises a data acquisition box and a computer.

[0027] Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of the monitoring assembly, the first instrument assembly, the second instrument assembly and the third instrument assembly, the temperature, pressure, flow and other data of the inlet, outlet and internal end surface of the quenching tower can be monitored in real time, the operation state of the quenching tower can be controlled in real time, the generation of dioxin in the upstream of the hazardous waste incineration system is minimized, the consumption of active carbon injection material of the downstream flue gas is reduced, and the operation cost of the production enterprise is saved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Figure 1 It is the structure schematic diagram of one kind example of the utility model.

[0030] Figure 2 It is the structure schematic diagram of one kind example of the utility model. Figure 1 It is the structure schematic diagram of the quenching tower and the parameter monitoring device.

[0031] Figure 3 It is the structure schematic diagram of one kind example of the utility model. Figure 1 It is the structure schematic diagram of the parameter monitoring device.

[0032] BRIEF DESCRIPTION OF DRAWINGS:

[0033] 1, quench tower;2, cooling liquid supply device;21, liquid supply pipe;22, air supply pipe;23, water pump;24, water tank;25, spray gun;26, air compressor;3, flue gas input device;31, flue gas output pipe;32, induced draft fan assembly;321, induced draft fan;322, induced draft fan power distribution cabinet;33, heating assembly;331, electric heater;332, electric heating control box;333, heating flue gas temperature sensor;34, flue gas input pipe;35, conveying pipe;36, regulating valve;37, exhaust valve;38, drain valve;39, air inlet valve;4, parameter monitoring device;40, monitoring assembly;401, data acquisition box;402, computer;41, first instrument assembly;411, outlet pressure sensor;412, outlet temperature sensor;42, second instrument assembly;421, inlet pressure sensor;422, inlet temperature sensor;423, inlet flow sensor;43, third instrument assembly;431, temperature measuring layer;4310, layer temperature sensor;4311, first layer temperature measuring point;4312, second layer temperature measuring point;4313, third layer temperature measuring point;4314, fourth layer temperature measuring point;432, flow rate detection layer;4320, flute type pipe speed sensor;4321, flute type pipe speed meter;44, fourth instrument assembly;441, cooling water flow sensor;442, cooling liquid pressure sensor. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not 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] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connect" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be direct connection, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0037] Referring to Figures 1 to 3 The utility model embodiment provides a quenching tower working condition monitoring system, including quenching tower 1, cooling liquid supply device 2, flue gas input device 3 and parameter monitoring device 4.

[0038] Among them, flue gas input device 3 includes the flue gas output pipeline 31, the induced draft fan assembly 32, the heating assembly 33 and the flue gas input pipeline 34 connected in turn along the flue gas flow direction, the output end of flue gas input pipeline 34 is connected with the upper end of quenching tower 1, and the flue gas output pipeline 31 is connected with the lower end of quenching tower 1;Parameter monitoring device 4 includes monitoring assembly 40, first instrument assembly 41, second instrument assembly 42 and third instrument assembly 43, and first instrument assembly 41, second instrument assembly 42 and third instrument assembly 43 are all in communication connection with monitoring assembly 40;First instrument assembly 41 is arranged at one end of flue gas output pipeline 31 close to quenching tower 1 to detect the temperature and pressure of outlet flue gas;Second instrument assembly 42 is arranged at one end of flue gas input pipeline 34 close to quenching tower 1 to detect the temperature, pressure and flow of inlet flue gas;Third instrument assembly 43 includes temperature measuring layer 431 and flow rate detection layer 432, and at least temperature measuring layer 431 is arranged in several layers from top to bottom along quenching tower 1.

[0039] It should be understood that, in the above scheme, through the cooperation of monitoring assembly 40, first instrument assembly 41, second instrument assembly 42 and third instrument assembly 43, the temperature, pressure, flow and other data of the inlet, outlet and internal end face of quenching tower 1 can be monitored in real time, and then the running state of quenching tower 1 can be controlled in real time, the generation of dioxin in the upstream of the hazardous waste incineration system is minimized, the consumption of active carbon injection material in the downstream flue gas is reduced, and the operating cost of the production enterprise is saved.In addition, the heating assembly 33 of flue gas input device 3 and the first instrument assembly 41 arranged on the flue gas output pipeline 31, the second instrument assembly 42 arranged on the flue gas input pipeline 34 cooperate with each other, which can improve the accuracy and precision of flue gas monitoring, facilitate the regulation and control of the whole system to reduce the generation of dioxin, and avoid the generation of dioxin in the transportation process of flue gas.

[0040] Referring to Figure 1 and Figure 2The first instrument assembly 41 comprises an outlet pressure sensor 411 for monitoring the pressure of the outlet flue gas and an outlet temperature sensor 412 for monitoring the temperature of the outlet flue gas.

[0041] Referring to Figure 1 and Figure 2 The second instrument assembly 42 comprises an inlet pressure sensor 421 for monitoring the pressure of the flue gas when entering the quench tower 1, an inlet temperature sensor 422 for monitoring the temperature of the flue gas when entering the quench tower 1, and an inlet flow sensor 423 for monitoring the flow rate of the flue gas when entering the quench tower 1.

[0042] Referring to Figure 1 and Figure 2 The temperature measuring layer 431 comprises at least four layers from top to bottom, and the flow rate detecting layer 432 is located below the lowermost temperature measuring layer 431.

[0043] Specifically, the temperature measuring layer 431 comprises a first layer temperature measuring point 4311, a second layer temperature measuring point 4312, a third layer temperature measuring point 4313, and a fourth layer temperature measuring point 4314, and the flow rate detecting layer 432 is located below the fourth layer temperature measuring point 4314.

[0044] Further, each temperature measuring layer 431 is provided with at least two layer temperature sensors 4310, and the flow rate detecting layer 432 is provided with a flute-type pipe velocity sensor 4320 and a flute-type pipe flow meter 4321.

[0045] Referring to Figure 1 and Figure 3 The cooling liquid supply device 2 comprises a liquid supply pipe 21 and an air supply pipe 22, and the parameter monitoring device 4 further comprises a fourth instrument assembly 44 provided on the liquid supply pipe 21 and in communication with the monitoring assembly 40 to monitor the temperature and pressure of the delivered cooling liquid.

[0046] Specifically, the fourth instrument assembly 44 comprises a cooling water flow sensor 441 and a cooling liquid pressure sensor 442.

[0047] It should be understood that one end of the liquid supply pipe 21 is connected with a water pump 23 and a water tank 24, and the other end is connected with a spray gun 25; one end of the air supply pipe 22 is connected with an air compressor 26, and the other end is connected with the spray gun 25, which is located inside the quench tower 1 and has an opening facing downward so as to spray the cooling liquid into the quench tower 1 through the spray gun 25.

[0048] Further, the heating assembly 33 comprises an electric heater 331 and an electric heating control box 332; an output end of the electric heater 331 is provided with a heating flue gas temperature sensor 333, the heating flue gas temperature sensor 333 is electrically connected with the electric heating control box 332; the electric heating control box 332 is in communication connection with the monitoring assembly 40.

[0049] Further, the induced draft fan assembly 32 comprises an induced draft fan 321 and an induced draft fan distribution cabinet 322; the induced draft fan distribution cabinet 322 is in communication connection with the monitoring assembly 40

[0050] Further, the induced draft fan assembly 32 and the heating assembly 33 are connected through a conveying pipe 35, the conveying pipe 35 is provided with an adjusting valve 36 and an exhaust valve 37; the flue gas output pipe 31 is provided with a drain valve 38 and an air inlet valve 39.

[0051] Referring to Figure 1 , the monitoring assembly 40 comprises a data acquisition box 401 and a computer 402.

[0052] In summary, it can be understood that the whole system workflow is as follows:

[0053] The flue gas discharged from the air or quenching tower 1 is sent into the electric heater 331 by the induced draft fan 321 for heating and temperature rising, the heated flue gas enters the quenching tower 1 from the top, at the same time, when the spray gun 25 is operated, the cooling liquid in the water tank 24 is pumped into the spray gun 25 by the water pump 23, and realizes spraying under the pressure of the compressed air delivered by the air compressor 26 through the air supply pipe 22, so that the flue gas and the cooling liquid sprayed out of the spray gun 25 are contacted to realize cooling, and are discharged from the lower end outlet of the quenching tower 1 together, the discharged flue gas is reheated by the induced draft fan 321 into the electric heater 331, and then the circulation treatment of the flue gas is realized, and the drain valve 38 controls the discharge of the cooling liquid after heat exchange.

[0054] In the above process, the pressure of the outlet flue gas is monitored in real time by the outlet pressure sensor 411, and the temperature of the outlet flue gas is monitored in real time by the outlet temperature sensor 412; the pressure, temperature and flow of the inlet flue gas are monitored in real time by the inlet pressure sensor 421, the inlet temperature sensor 422 and the inlet flow sensor 423 respectively; the temperatures of each layer section in the quenching tower 1 are monitored in real time by the layer temperature sensor 4310, and the flue gas flow rate in the quenching tower 1 is monitored in real time by the flute type pipe velocity sensor 4320; the flow and pressure of the cooling liquid are monitored in real time by the cooling water flow sensor 441 and the cooling liquid pressure sensor 442 respectively; the data monitored by each sensor is transmitted in real time to the data acquisition box 401, and further transmitted to the computer 402 for real-time display, storage and calculation processing, so as to realize intelligent monitoring of the working condition of the quenching tower 1.

[0055] In addition, in the above process, when the flue gas flow is small, the air inlet valve 39 of the induced draft fan 321 is opened to introduce air to mix with the flue gas, and when the flue gas flow is large, the exhaust valve 37 is opened to exhaust part of the flue gas, and the regulating valve 36 is controlled to make the flue gas flow and flow rate within the test range, wherein it is noted that continuous high-temperature exhaust needs to be introduced outdoors.

[0056] It is worth noting that by the temperature measuring layer 431, the three-dimensional temperature field of the quenching tower 1 can be simulated, and the temperature of each layer section in the tower can be determined, especially the position of 200 DEG C, and the flow rate of the flue gas can be determined according to the flow rate detection layer 432, and the time required for the flue gas to drop below 200 DEG C can be calculated, and the monitoring data is used as the basis for optimization control to ensure that the flue gas temperature drops below 200 DEG C within one second, reduce the residence time of the flue gas in the temperature range of 200-500 DEG C, and effectively reduce the generation of dioxin. The specific temperature field detection and control method can be realized by means of a computer program, which is not the improvement point of the present application, and therefore will not be described here.

[0057] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A quench tower operating condition monitoring system characterized by, The device comprises a quench tower (1), a cooling liquid supply device (2), a flue gas input device (3) and a parameter monitoring device (4); The flue gas input device (3) comprises a flue gas output pipeline (31), an induced draft fan assembly (32), a heating assembly (33) and a flue gas input pipeline (34) connected in sequence along the flue gas flow direction, the output end of the flue gas input pipeline (34) is connected with the upper end port of the quench tower (1), and the flue gas output pipeline (31) is connected with the lower end port of the quench tower (1); The parameter monitoring device (4) comprises a monitoring assembly (40), a first instrument assembly (41), a second instrument assembly (42) and a third instrument assembly (43), the first instrument assembly (41), the second instrument assembly (42) and the third instrument assembly (43) are all in communication connection with the monitoring assembly (40); The first instrument assembly (41) is arranged at one end of the flue gas output pipeline (31) close to the quench tower (1) to detect the temperature and pressure of the outlet flue gas; The second instrument assembly (42) is arranged at one end of the flue gas input pipeline (34) close to the quench tower (1) to detect the temperature, pressure and flow of the inlet flue gas; The third instrument assembly (43) comprises a temperature measuring layer (431) and a flow velocity detecting layer (432), and at least the temperature measuring layer (431) is arranged from top to bottom along the quench tower (1).

2. A quench tower operating condition monitoring system according to claim 1, wherein, The first instrument assembly (41) comprises an outlet pressure sensor (411) and an outlet temperature sensor (412).

3. A quench tower operating condition monitoring system according to claim 1, wherein, The second instrument assembly (42) comprises an inlet pressure sensor (421), an inlet temperature sensor (422) and an inlet flow sensor (423).

4. A quench tower operating condition monitoring system according to claim 1, wherein, The temperature measuring layer (431) is arranged from top to bottom with at least four layers, and the flow velocity detecting layer (432) is located below the lowermost temperature measuring layer (431).

5. A quench tower operating condition monitoring system according to claim 4, wherein, Each temperature measuring layer (431) is provided with at least two layer temperature sensors (4310); The flow velocity detecting layer (432) is provided with a flute type pipe velocity sensor (4320) and a flute type pipe velocity meter (4321).

6. A quench tower operating condition monitoring system according to claim 1, wherein, The cooling liquid supply device (2) comprises a liquid supply pipe (21) and an air supply pipe (22); The parameter monitoring device (4) further comprises a fourth instrument assembly (44), which is arranged on the liquid supply pipe (21) and in communication connection with the monitoring assembly (40); The fourth instrument assembly (44) comprises a cooling water flow sensor (441) and a cooling liquid pressure sensor (442).

7. A quench tower operating condition monitoring system according to claim 1 wherein, The heating assembly (33) comprises an electric heater (331) and an electric heating control box (332); The output end of the electric heater (331) is provided with a heating flue gas temperature sensor (333), and the heating flue gas temperature sensor (333) is electrically connected with the electric heating control box (332); The electric heating control box (332) is in communication connection with the monitoring assembly (40).

8. A quench tower operating condition monitoring system according to claim 1 wherein, The induced draft fan assembly (32) comprises an induced draft fan (321) and an induced draft fan distribution cabinet (322); The induced draft fan distribution cabinet (322) is in communication connection with the monitoring assembly (40).

9. A quench tower operating condition monitoring system according to claim 1 wherein, The air leading fan assembly (32) and the heating assembly (33) are connected through a conveying pipe (35), and the conveying pipe (35) is provided with an adjusting valve (36) and an exhaust valve (37); The flue gas output pipeline (31) is provided with a drain valve (38) and an air inlet valve (39).

10. A quench tower operating condition monitoring system according to any one of claims 1 to 9, wherein, The monitoring assembly (40) comprises a data acquisition box (401) and a computer (402).

Images