CN115773909A - High-temperature flue gas analysis, detection and sampling device - Google Patents
High-temperature flue gas analysis, detection and sampling device Download PDFInfo
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Abstract
The invention discloses a high-temperature flue gas analysis, detection and sampling device, which belongs to the technical field of carbon black tail gas combustion furnaces and comprises a high-temperature section sampling assembly, a medium-temperature section sampling assembly, an air cooler device and a detection assembly, wherein the high-temperature section sampling assembly and the medium-temperature section sampling assembly are fixedly connected, the air cooler device is arranged at one end, far away from the high-temperature section sampling assembly, of the medium-temperature section sampling assembly, the detection assembly is arranged at one end, far away from the medium-temperature section sampling assembly, of the air cooler device, and the high-temperature section sampling assembly, the medium-temperature section sampling assembly, the air cooler device and the detection assembly are communicated. The invention can extract the high-temperature flue gas in the environment with the temperature of about 1500 ℃, and can reduce the temperature of the high-temperature flue gas to 20-25 ℃; the invention can sample high-temperature flue gas, analyze the sample, display the detected data in real time through the Internet of things module, and transmit the detected data to the cloud for storage.
Description
Technical Field
The invention belongs to the technical field of carbon black tail gas combustion furnaces, and particularly relates to a high-temperature flue gas analysis, detection and sampling device.
Background
In the combustion process of the carbon black tail gas incinerator, the main fuel is carbon black tail gas, the carbon black tail gas comprises H213%, CO11%, CO25%, N240%, H2O31% and H2S0.04%, and high-temperature flue gas at 1050-1260 ℃ generated after the carbon black tail gas and combustion-supporting air are mixed and combusted is used as a main heat source for drying wet carbon black.
In the combustion process, the chemical composition of the tail gas changes according to the different carbon black varieties, and the proportion of the tail gas to air needs to be adjusted as required. The basis of the adjustment is that the combustion temperature and two important post-combustion components of CO and O2 are adjusted, the unnecessary loss of tail gas and the lower combustion temperature are caused by peroxide combustion, the carbon black vulcanization speed is influenced by the oxidation of the surface of the carbon black, the incomplete combustion is caused by oxygen-deficient combustion, the lower temperature and the CO are generated, the collapse of a secondary combustion furnace wall at the rear section of a high-temperature flue gas section of the tail gas furnace is probably caused, and the larger potential safety hazard is realized. Excessive CO causes explosion and filter bag combustion of waste bags, so that gas analysis of high-temperature flue gas is necessary, and the problem of sampling of the high-temperature flue gas is that metal pipes on materials are effectively inserted into a tail gas combustion furnace to a certain depth, cannot be born and are melted and bent and broken in a high-temperature flue gas conveying pipeline at 1260 ℃, proper materials and proper sampling devices are required to effectively take out the gas at 1260 ℃ and effectively cool the gas to 20-25 ℃. However, at present, on a gas analysis pretreatment device, an equipment sampling device capable of effectively taking out high-temperature smoke at 1260 ℃ and rapidly cooling the smoke to 20 ℃ does not exist.
Therefore, in order to solve the above technical problems, it is necessary to provide a sampling device for analyzing and detecting high-temperature flue gas.
Disclosure of Invention
The invention aims to provide a high-temperature flue gas analysis, detection and sampling device to solve the problems.
In order to achieve the above object, an embodiment of the present invention provides a high temperature flue gas analysis, detection and sampling device, which includes a high temperature section sampling assembly, a medium temperature section sampling assembly, an air cooler device and a detection assembly, wherein the high temperature section sampling assembly and the medium temperature section sampling assembly are fixedly connected, the air cooler device is installed at one end of the medium temperature section sampling assembly, which is far away from the high temperature section sampling assembly, the detection assembly is installed at one end of the air cooler device, which is far away from the medium temperature section sampling assembly, and the high temperature section sampling assembly, the medium temperature section sampling assembly, the air cooler device and the detection assembly are communicated with each other.
As a further improvement of the invention, the high-temperature section sampling assembly comprises a sampling tube and a sampling short tube, the sampling short tube is arranged in the sampling tube, a through hole is formed in the sampling tube, and the through hole penetrates through the sampling tube and one side wall of the sampling short tube.
As a further improvement of the invention, a first sleeve is sleeved on the sampling tube, a first asbestos filler is arranged between the first sleeve and the sampling tube, a second sleeve is arranged between the first asbestos filler and the sampling tube, a fastening flange and a first filler box are sleeved on the first sleeve, a gasket is arranged between the fastening flange and the first filler box, and the through hole is positioned at one end of the sampling tube, which is far away from the middle-temperature section sampling assembly.
As a further improvement of the invention, the sampling tube is a corundum ceramic tube, the diameter of the sampling tube is 16mm, and the total length of the sampling tube is 1050mm.
As a further improvement of the invention, the detection assembly comprises an extraction pump, a first gas detector, a second gas detector, and a hose that runs through the extraction pump, the first gas detector, the second gas detector, and the flow meter.
As a further improvement of the invention, the middle-temperature section sampling assembly comprises a jacketed pipe, a second asbestos filler is sleeved on the jacketed pipe, a second stuffing box is sleeved on the second asbestos filler, and an exhaust pipe is installed on the jacketed pipe.
As a further improvement of the invention, a second stop valve is arranged on the jacketed pipe, a joint is arranged between the jacketed pipe and the second stop valve, and a first stop valve is arranged at one end of the second asbestos filler, which is far away from the high-temperature section sampling assembly.
As a further improvement of the invention, the air cooler device comprises a metal pipe, and a metal hose is sleeved on the metal pipe.
As a further improvement of the invention, an air outlet is arranged on the metal hose, and a third stop valve is arranged at one end of the air cooler device, which is far away from the middle-temperature section sampling assembly.
As a further improvement of the invention, one end of the high-temperature section sampling assembly, which is far away from the air cooler device, is provided with a furnace body, the furnace body comprises a furnace body and a refractory layer, the furnace body is provided with a through hole matched with the high-temperature section sampling assembly, and the high-temperature section sampling assembly is inserted in the through hole.
Compared with the prior art, the invention has the following advantages:
(1) The invention can extract the high-temperature flue gas in the environment with the temperature of about 1500 ℃, and can reduce the temperature of the high-temperature flue gas to 20-25 ℃;
(2) According to the invention, the high-temperature flue gas can be sampled, the sample can be analyzed, the detected data can be displayed in real time through the Internet of things module, and meanwhile, the detected data is transmitted to the cloud for storage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-temperature flue gas analysis, detection and sampling device according to an embodiment of the present invention;
FIG. 2 is a first schematic structural diagram of a high-temperature-stage sampling assembly according to an embodiment of the present invention;
FIG. 3 is a first schematic structural diagram of a middle temperature sampling assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second sampling device for analyzing and detecting high-temperature flue gas according to an embodiment of the present invention;
FIG. 5 is a second schematic structural diagram of a high temperature section sampling assembly according to an embodiment of the present invention;
FIG. 6 is a second schematic structural diagram of a middle temperature sampling assembly according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an air cooler device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a joint of a high-temperature-stage sampling assembly and a medium-temperature-stage sampling assembly according to an embodiment of the present invention.
In the figure: 1. the high-temperature section sampling assembly comprises 101, a sampling pipe, 102, a first sleeve, 103, a second sleeve, 104, a fastening flange, 105, a gasket, 106, a first stuffing box, 107, a sampling short pipe, 108, a first asbestos stuffing, 109, an asbestos gasket, 110, a through hole, 2, a middle-temperature section sampling assembly, 201, a second asbestos stuffing, 202, a clamping sleeve, 203, a second stuffing box, 204, a first stop valve, 205, an exhaust pipe, 206, a second stop valve, 207, a joint, 3, an air cooler device, 301, a metal hose, 302, a metal pipe, 303, a third stop valve, 304, an exhaust port, 4, a detection assembly, 401, an extraction pump, 402, a first gas detector, 403, a second gas detector, 404, a flow meter, 5, a hose, 6, a furnace body, 601, a body, 602 and a refractory layer.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
[ EXAMPLES one ]
Referring to fig. 1, the high temperature flue gas analyzing, detecting and sampling device disclosed in an embodiment of the present invention is installed in a furnace body 6. The high-temperature flue gas analysis, detection and sampling device comprises a high-temperature section sampling assembly 1, a medium-temperature section sampling assembly 2, an air cooler device 3 and a detection assembly 4, wherein the high-temperature section sampling assembly 1 is positioned inside a furnace body 6. High temperature section sampling subassembly 1 and the high temperature flue gas direct contact in the stove, high temperature flue gas get into high temperature section sampling subassembly 1 back, and high temperature section sampling subassembly 1 can be to the high temperature flue gas continuous cooling who gets into to the flue gas after the cooling is sampled. The middle temperature section sampling assembly 2 is used for continuously reducing the temperature of the high temperature through the high temperature section sampling assembly 1 in a delay way and simultaneously sampling. When the high-temperature flue gas enters the air cooler device 3, the air cooler device 3 can directly reduce the temperature of the high-temperature flue gas to 20-25 ℃, the detection component 4 can detect the high-temperature flue gas passing through the air cooler device 3, and the high-temperature flue gas is finally discharged from the detection component 4.
Specifically, furnace body 6 sets up the one end at high temperature flue gas analysis and detection sampling device, and furnace body 6 is located the one end that high temperature section sampling component 1 kept away from middle temperature section sampling component 2. The furnace body 6 comprises a furnace body 601 and a refractory layer 602, a through hole matched with the high-temperature section sampling assembly 1 is formed in the furnace body 6, and the high-temperature section sampling assembly 1 is inserted into the through hole.
Referring to fig. 4 to 8, the high-temperature section sampling assembly 1 and the middle-temperature section sampling assembly 2 are connected by screw threads, that is, the high-temperature section sampling assembly 1 and the middle-temperature section sampling assembly 2 are fixedly connected, and the middle-temperature section sampling assembly 2 is inserted into the high-temperature section sampling assembly 1. When the depth of the medium temperature section sampling assembly 2 inserted into the furnace body 6 is 150 mm-250 mm, as shown in fig. 8, an internal thread is arranged on the fastening flange 104, an external thread matched with the internal thread is arranged on the second packing box 203, and the high temperature section sampling assembly 1 and the medium temperature section sampling assembly 2 are in threaded connection. When fastening flange 104 and second packing box 203 cooperation threaded connection, sampling tube 101 and jacket pipe 202 contact, and the place that sampling tube 101 and jacket pipe 202 contacted can seamless sealed joining, all is provided with sealed seamless joining interface on sampling tube 101 and the jacket pipe 202 promptly, and jacket pipe 202 and sampling tube 101 are for keeping apart sealing connection, can play the leakage that prevents the high temperature flue gas and hinder heat, thermal-insulated effect. The first stop valve 204 is installed at the end, far away from the high-temperature section sampling assembly 1, of the second asbestos packing 201, the first stop valve 204 can be in limited connection with an external cooling part and be used again, sampling gas flow is adjusted, and in the process that the gas sampling device is not used, the gas flow is effectively shut off and stopped, and sintering and damage of the jacketed pipe 202 are prevented.
Avoid causing high temperature section sampling subassembly 1 inside to rock because of the bolt is not hard up, and then influence the inside condition of high temperature section sampling subassembly 1, the welded in-process should use high temperature to pour resistant material, and high temperature pours resistant material and should fill closely knit, avoids gas leakage and the interior resistant firebrick of stove collapses and the blowby gas.
Specifically, referring to fig. 2, the high-temperature sampling assembly 1 includes a sampling tube 101, and a through hole 110 is formed on the sampling tube 101. The through hole 110 is located at one end of the high temperature section sampling assembly 1 far away from the middle temperature section sampling assembly 2, and the diameter of the through hole 110 is 8mm. The distance between the circle center of the through hole 110 and the bottom wall of the sampling tube 101 is 80mm, the sampling tube 101 is sleeved with a first sleeve 102, the sampling tube 101 and the first sleeve 102 are welded, the first sleeve 102 is welded after being inserted into the sampling tube 101 with the depth of 150 mm-250 mm, and the first sleeve 102 is welded with a fastening flange 104. A second sleeve 103 is arranged between the first sleeve 102 and the sampling tube 101, the second sleeve 103 can improve the supporting strength of the sampling tube 101 for the sampling tube 101, and the second sleeve 103 is made of a high-temperature-resistant material with certain hardness, and specifically can be made of tantalum-hafnium carbide alloy, graphite or diamond and the like, and is a second sleeve 103.
Furthermore, the sampling tube 101 and the first sleeve 102, the first sleeve 102 and the fastening flange 104 are welded by using a high-temperature casting refractory material, the high-temperature casting refractory material should be tightly filled during the welding process to prevent gas leakage and further cause collapse and gas leakage of refractory bricks in the furnace, the diameter of the sampling tube 101 is generally 16mm × 3, and the inner diameter is 10mm. The total length of the sampling tube 101 is 1050mm, the sampling tube 101 is generally a corundum tube, the corundum tube can resist high temperature, can be used in a high-temperature environment with the temperature of 1200-1800 ℃, and the corundum tube has high density, good thermal shock resistance, acid and alkali resistance and scouring resistance. Certainly also can be other high temperature resistant material's pipeline, connect through high temperature diphase bonding material between sampling tube 101 and the second sleeve pipe 103, but the alundum pipe is fragile and breakable, and the second sleeve pipe 103 can strengthen the support intensity that the alundum pipe was drawn forth to a great extent, and the support intensity that the sampling tube 101 was drawn forth can be strengthened to second sleeve pipe 103 promptly, and middle temperature section sampling subassembly 2 and detection component 4 constitute the installing support, and the installing support can be with first stuffing box 106 cooperation seal installation, and first stuffing box 106 closely fixes with the cooperation on the fastening flange 104.
Can directly stretch into the high temperature environment of temperature 1050 ℃ -1300 ℃ with the one end of high temperature section sampling subassembly 1, through the cooperation of through-hole 110 and detection subassembly 4, can inhale the high temperature flue gas in the sampling tube 101.
Referring to fig. 3, the middle temperature section sampling assembly 2 can reduce the temperature of the high temperature flue gas in the high temperature section sampling assembly 1 by necking, limiting the flow and reducing the temperature, and the middle temperature section sampling assembly 2 includes a jacketed pipe 202. The jacketed pipe 202 is generally a stainless steel pipe, the jacketed pipe 202 is a stainless steel pipe with a diameter of 8mm, the jacketed pipe 202 is externally wrapped with a second asbestos filler 201, and the second asbestos filler 201 is located between the sampling pipe 101 and the jacketed pipe 202, so that gas leakage and high-temperature isolation can be prevented.
Specifically, the high-temperature flue gas is taken out through the jacketed pipe 202 at the 101500mm position of the sampling pipe, the position is far away from the high-temperature center of the furnace body, the position is located in the middle of the refractory layer 602, the heat insulation effect of the refractory layer 602 is achieved, and the inner diameter of the jacketed pipe 202 is 6mm. The high-temperature gas enters the jacketed pipe 202 from the high-temperature section sampling assembly 1 and enters the pipeline of 6mm from the pipeline of 8mm, and the limited flow rate of the high-temperature gas is small and is 400Nl/h. Under the limited flow, the temperature of the high-temperature gas at the end of the jacketed pipe 202 is reduced to 700-800 ℃, and the jacketed pipe 202 in the middle-temperature section sampling assembly 2 can completely bear the high temperature of 700-800 ℃.
The jacketed pipe 202 is used for indirectly taking out the middle-temperature flue gas at 700-800 ℃ through the middle-temperature section sampling assembly 2. The taking-out process will follow
The jacket sleeve 202 continues to extend and continue to cool until the end of the jacket sleeve 202 is bentThe temperature at the head is basically reduced to 300-400 ℃.
Referring to fig. 7, the air cooler device 3 is installed at one end of the middle-temperature sampling assembly 2 away from the high-temperature sampling assembly 1, the air cooler device 3 includes a metal pipe 302, and the metal pipe 302 is a stainless steel pipe or a purple steel pipe with an outer diameter of 8mm × 1.5m. The metal hose 301 is a metal hose with a diameter of 8mm × 1.5m, and the metal hose 301 is sleeved on the metal pipe 302. The air cooler device 3 is used for air heat exchange cooling treatment, the one end three way connection of the metal hose 301 is emptied, and the third stop valve 303 is installed at one end, far away from the middle temperature section sampling assembly 2, of the metal hose 301. The third stop valve 303 can reversely flow the 0.6MPa compressed air to the middle temperature flue gas, so that the middle temperature flue gas is kept at about 300-400 ℃, the flow rate of 400Nl/h/h is reversely cooled through the air of the metal pipe 302 and the metal hose 301, the temperature is rapidly reduced, and the high temperature flue gas is directly cooled to 20-25 ℃ through the air cooler device 3.
Wherein, be provided with gas vent 304 on the metal collapsible tube 301, gas vent 304 can be with the high temperature flue gas that exists in metal collapsible tube 301 discharge, avoids the high temperature flue gas to exist in metal collapsible tube 301 for a long time, and then influences the cooling effect of air cooler device 3, and then influences the testing result.
Referring to fig. 4, the high temperature flue gas finally enters the detection assembly 4 after passing through the air cooler device 3, and the detection assembly 4 includes a suction pump 401, a first gas detector 402, second gas detectors 403 and 405, and a hose 5. The hose 5 runs through a draw pump 401, a first gas detector 402, a second gas detector 403 and a flow meter 404. Hose 5 and tubular metal resonator 302 are linked together, and extraction pump 401 can be with being arranged in the high temperature flue gas of furnace body 6 and finally take out and send to detection subassembly 4 in high temperature section sampling subassembly 1, middle temperature section sampling subassembly 2, air cooler device 3. The first gas detector 402 can detect the concentration of CO gas in the gas, and the second gas detector 403 can detect the concentration of 02 gas in the gas, and then detect the lifted flow rate through 405, and then discharge the gas.
Wherein, still be provided with thing networking module in the determine module 4, the data that detects through determine module 4 can convey the cell-phone end in real time, and the staff can be more convenient from collecting the end and observing data, and thing networking module can also store data transmission to the high in the clouds, is convenient for to the analysis of data.
[ example two ]
The invention discloses a high-temperature flue gas analysis, detection and sampling device, which is shown in figure 1 and is arranged in a furnace body 6, the high-temperature flue gas analysis, detection and sampling device comprises a high-temperature section sampling assembly 1, a medium-temperature section sampling assembly 2, an air cooler device 3 and a detection assembly 4, the high-temperature section sampling assembly 1 is positioned in the furnace body 6, and one end of the high-temperature section sampling assembly 1 can directly extend into a high-temperature environment with the temperature of 1050-1500 ℃. Through-hole 110 and the cooperation of determine module 4, can inhale the sampling tube 101 with high temperature flue gas in, high temperature section sample subassembly 1 and the high temperature flue gas direct contact in the stove, high temperature flue gas gets into high temperature section sample subassembly 1 back, and high temperature section sample subassembly 1 can be to the high temperature flue gas of getting into continuously cooling to the flue gas after cooling samples. Middle temperature section sampling component 2 is arranged in lasting the cooling to the high temperature through high temperature section sampling component 1, and the while is sampled, and when the high temperature flue gas entered into air cooler device 3, air cooler device 3 can reduce the direct temperature with the high temperature flue gas to 20 ℃ -25 ℃, and detecting element 4 can detect the high temperature flue gas through air cooler device 3, and the high temperature flue gas is finally discharged from detecting element 4.
Specifically, furnace body 6 sets up the one end at high temperature flue gas analysis and detection sampling device, and furnace body 6 is located the one end that high temperature section sampling component 1 kept away from middle temperature section sampling component 2. The furnace body 6 comprises a furnace body 601 and a refractory layer 602, a through hole matched with the high-temperature section sampling assembly 1 is formed in the furnace body 6, and the high-temperature section sampling assembly 1 is inserted into the through hole.
Referring to fig. 1 to 3, the high-temperature section sampling assembly 1 and the middle-temperature section sampling assembly 2 are connected by screw threads, that is, the high-temperature section sampling assembly 1 and the middle-temperature section sampling assembly 2 are fixedly connected, and the middle-temperature section sampling assembly 2 is inserted into the high-temperature section sampling assembly 1. When the degree of depth that middle temperature section sampling subassembly 2 inserted furnace body 6 was 150mm ~ 250mm, it is shown with reference to fig. 8, set up the internal thread on the fastening flange 104, set up on the second packing box 203 with internal thread assorted external screw thread, high temperature section sampling subassembly 1 and middle temperature section sampling subassembly 2 are threaded connection, and when fastening flange 104 and second packing box 203 cooperation threaded connection, sampling tube 101 and jacket pipe 202 contacted. The sampling pipe 101 can be in seamless sealing connection with the jacketed pipe 202 at the contact position, namely, the sampling pipe 101 and the jacketed pipe 202 are both provided with a sealing seamless connection interface, the jacketed pipe 202 and the sampling pipe 101 are in isolated sealing connection, the effects of preventing high-temperature smoke from leaking, resisting heat and insulating heat can be achieved, one end, far away from the high-temperature section sampling assembly 1, of the second asbestos filler 201 is provided with a first stop valve 204, the first stop valve 204 can be in limited connection with an external cooling part and can be used again, the sampling gas flow is adjusted, and in the process that the gas sampling device is not used, the gas is effectively shut off and stopped from flowing, and the jacketed pipe 202 is prevented from being sintered and damaged.
Avoid causing high temperature section sampling subassembly 1 inside to rock because of the bolt is not hard up, and then influence the inside condition of high temperature section sampling subassembly 1, the welded in-process should use high temperature to pour resistant material, and high temperature pours resistant material and should fill closely knit, avoids gas leakage and the interior resistant firebrick of stove collapses and the blowby gas.
Specifically, the middle temperature section sampling assembly 2 includes a sampling tube 101 and a sampling short tube 107, and the sampling short tube 107 is inserted into the sampling tube 101. The diameter of the outer wall of the sampling short pipe 107 is equal to the diameter of the inner wall of the sampling tube 101, a through hole 110 is formed on the sampling tube 101, and the through hole 110 penetrates through the sampling tube 101 and one side wall of the sampling short pipe 107. The through hole 110 can make the air enter into the sampling tube 101 and the sampling short pipe 107, the through hole 110 is located at one end of the high-temperature section sampling assembly 1 far away from the medium-temperature section sampling assembly 2, the diameter of the through hole 110 is 8mm, the distance between the circle center of the through hole 110 and the bottom wall of the sampling tube 101 is 80mm, the sampling tube 101 is sleeved with the first sleeve 102, the sampling tube 101 and the first sleeve 102 are welded, the first sleeve 102 is welded after being inserted into the sampling tube 101 with the depth of 150 mm-250 mm, the fastening flange 104 is welded on the first sleeve 102, the second sleeve 103 is installed between the first sleeve 102 and the sampling tube 101, the second sleeve 103 can improve the supporting strength of the sampling tube 101 for the sampling tube 101, the second sleeve 103 is made of high-temperature resistant material with certain hardness, and specifically can be made of tantalum carbide hafnium alloy, graphite or diamond and the like, and the second sleeve 103 is made of the same material.
Furthermore, the sampling tube 101 and the first sleeve 102, the first sleeve 102 and the fastening flange 104 are welded by using a high-temperature casting refractory material, the high-temperature casting refractory material should be tightly filled during the welding process to prevent gas leakage and further cause collapse and gas leakage of refractory bricks in the furnace, the diameter of the sampling tube 101 is generally 16mm × 3, and the inner diameter is 10mm. The total length of the sampling tube 101 is 1050mm, the sampling tube 101 is generally a corundum tube, the corundum tube can resist high temperature, can be used in a high-temperature environment with the temperature of 1200-1800 ℃, and the corundum tube has high density, good thermal shock resistance, acid and alkali resistance and scouring resistance, and can be a pipeline made of other high-temperature-resistant materials. The sampling tube 101 and the second sleeve 103 are connected through a high-temperature double-phase bonding material, but the corundum tube is brittle and easy to crack, the second sleeve 103 can enhance the support strength led out by the corundum tube to a great extent, namely the second sleeve 103 can enhance the support strength led out by the sampling tube 101, the middle-temperature section sampling assembly 2 and the detection assembly 4 form a mounting bracket, the mounting bracket can be matched with the first stuffing box 106 for sealing installation, and the first stuffing box 106 is tightly fixed with the fastening flange 104 in a matching manner.
Referring to fig. 5, a first asbestos filler 108 is installed between the second sleeve 103 and the first sleeve 102, the first asbestos filler 108 has high fire resistance, electrical insulation and thermal insulation, and the first asbestos filler 108 can better protect high-temperature gas in the middle section of the sampling tube 101, so that heat exchange between external temperature and the temperature in the middle section of the sampling tube 101 is avoided, the cooling effect of the asbestos gasket 109 is reduced, and a certain protection effect can be provided for the sampling tube 101.
The asbestos gasket 109 is installed in the sampling tube 101, and the asbestos gasket 109 can further reduce the inlet gap between the sampling tube 101 and the jacketed pipe 202, so that the limited flow rate is further enhanced, and meanwhile, the asbestos gasket 109 can enhance the sealing performance between the sampling tube 101 and the jacketed pipe 202.
The first sleeve 102 is fitted with a gasket 105. Similarly, the gasket 105 can enhance the seal between the sampling tube 101 and the jacketed pipe 202.
Referring to fig. 6, the middle-temperature-range sampling assembly 2 can reduce the temperature of the high-temperature flue gas in the high-temperature-range sampling assembly 1 by necking, limiting the flow and cooling, the middle-temperature-range sampling assembly 2 includes a jacketed pipe 202, the jacketed pipe 202 is generally a stainless steel pipe, and the jacketed pipe 202 is a stainless steel pipe with a diameter of 8mm. The jacket sleeve 202 is externally wrapped with a second asbestos filler 201, and the second asbestos filler 201 is positioned between the sampling tube 101 and the jacket sleeve 202, so that gas leakage and high-temperature isolation can be prevented.
Specifically, the high-temperature flue gas is taken out through the jacketed pipe 202 at the 500mm position of the sampling tube 101, the position is far away from the high-temperature center of the furnace body, the position is located in the middle of the refractory layer 602, the heat insulation effect of the refractory layer 602 is achieved, the inner diameter of the jacketed pipe 202 is 6mm, and the high-temperature gas enters the jacketed pipe 202 from the high-temperature section sampling assembly 1. The high-temperature gas enters a 6mm pipeline from an 8mm pipeline, the limited flow rate of the high-temperature gas is small, the limited flow rate is 400Nl/h, the temperature of the high-temperature gas reaching the tail end of the jacketed pipe 202 is reduced to 700-800 ℃ under the limited flow rate, and the jacketed pipe 202 in the middle-temperature section sampling assembly 2 can completely bear the high temperature of 700-800 ℃.
The jacketed pipe 202 is used for indirectly taking out the middle-temperature flue gas at 700-800 ℃ through the middle-temperature section sampling assembly 2. The taking-out process will follow
The jacket sleeve 202 continues to extend and continue to cool until the elbow at the end of the jacket sleeve 202 has substantially dropped to 300-400 ℃.
A second stop valve 206 is installed on the second asbestos packing 201, a joint 207 is installed between the second stop valve 206 and the second asbestos packing 201, and the joint 207 can enhance the sealing performance between the second stop valve 206 and the second asbestos packing 201. Can adjust gas flow through second stop valve 206, blast pipe 205 is installed to the lower extreme of second stop valve 206, and blast pipe 205 can be with the gas outgoing in jacketed pipe 202, and the temperature of high temperature flue gas in jacketed pipe 202 can be reduced to some gas of discharge, promotes the radiating effect of middle temperature section sampling subassembly 2.
Specifically, the length of the exhaust pipe 205 is 15mm, and the outer diameter of the exhaust pipe 205 is 2mm × 0.8mm, that is, the gas that can be discharged by the exhaust pipe 205 is limited, and the temperature of the rest of the high-temperature flue gas in the high-temperature-stage sampling assembly 1 is not affected.
The second stop valve 206 has a simple manufacturing process of
Stainless steel tube and
stainless steel pipe with two end circular pipe plates sealed and welded while maintaining concentric circles
Stainless steel one end is at L = 545. Open hole welding
RC1/4NPT cutting sleeve type stainless steel joint used for connecting 0.6MPa compressed air and used as cooling air, and the joint is obliquely opened at the position opposite to the concentric 180-degree welding circle
Eyelet, insert number
Stainless steel tubing, insert length L =535mm, and argon arc welded. As an air exhaust port, the jacketed pipe 202 is subjected to a gas sealing test to prevent air from leaking at the sealing positions at the two ends of the jacketed pipe, 1 to 2 pipes can be welded for exhaust,
the device comprises a plurality of cooling functions of necking current-limiting heat-insulating extension cooling, air cooling of a stainless steel jacket device and the like, the temperature of the part number 4 ferrule type needle stop valve is reduced by 150-200 ℃ again, and the effect is more obvious.
Referring to fig. 7, the air cooler device 3 is installed at one end of the middle-temperature sampling assembly 2 away from the high-temperature sampling assembly 1, the air cooler device 3 includes a metal pipe 302, and the metal pipe 302 is a stainless steel pipe or a purple steel pipe with an outer diameter of 8mm × 1.5m. The metal hose 301 is a metal hose with the diameter of 8mm x 1.5m, the metal hose 301 is sleeved on the metal pipe 302, the air cooler device 3 is used for air heat exchange cooling treatment, and a tee joint at one end of the metal hose 301 is emptied. One end of the metal hose 301, which is far away from the middle-temperature section sampling assembly 2, is provided with a third stop valve 303, the third stop valve 303 can reversely flow 0.6MPa of compressed air into the middle-temperature flue gas, so that the middle-temperature flue gas is kept at about 300-400 ℃ and the air with the flow rate of 400Nl/h passing through the metal pipe 302 and the metal hose 301 is reversely cooled, the temperature is rapidly reduced, and the high-temperature flue gas is directly cooled to 20-25 ℃ through the air cooler device 3.
Wherein, be provided with gas vent 304 on the metal collapsible tube 301, gas vent 304 can be with the high temperature flue gas that exists in metal collapsible tube 301 discharge, avoids the high temperature flue gas to exist in metal collapsible tube 301 for a long time, and then influences the cooling effect of air cooler device 3, and then influences the testing result.
Referring to fig. 4, after passing through the air cooler device 3, the high-temperature flue gas finally enters the detection assembly 4, the detection assembly 4 includes an extraction pump 401, a first gas detector 402, a second gas detector 403, 405 and a hose 5, the hose 5 penetrates through the extraction pump 401, the first gas detector 402, the second gas detector 403 and a flowmeter 404, the hose 5 is communicated with the metal pipe 302, and the extraction pump 401 can finally pump the high-temperature flue gas located in the furnace body 6 to the detection assembly 4 through the high-temperature section sampling assembly 1, the medium-temperature section sampling assembly 2 and the air cooler device 3. The first gas detector 402 can detect the concentration of CO gas in the gas, and the second gas detector 403 can detect the concentration of 02 gas in the gas, and then detect the lifted flow rate through 405, and then discharge the gas.
Wherein, still be provided with thing networking module in the determine module 4, the data that detects through determine module 4 can convey the cell-phone end in real time, and the staff can be more convenient from collecting the end and observing data, and thing networking module can also store data transmission to the high in the clouds, is convenient for to the analysis of data.
During the use, at first insert the inside of furnace body 6 through the through-hole with high temperature section sampling subassembly 1, then through fastening flange 104 and second packing box 203 threaded connection with high temperature section sampling subassembly 1 and middle temperature section sampling subassembly 2 fixed, then adjust second stop valve 206 and first stop valve 204, adjust the flow of high temperature flue gas, then keep away from the one end installation air cooler device 3 of high temperature section sampling subassembly 1 at middle temperature section sampling subassembly 2. Then, the detection assembly 4 is started, the detection assembly 4 can enable high-temperature flue gas in the furnace body 6 to sequentially pass through the high-temperature section sampling assembly 1, the medium-temperature section sampling assembly 2, the air cooler device 3 and the detection assembly 4, the final temperature of the high-temperature flue gas after passing through the air cooler device 3 is 20-25 ℃, and the high-temperature flue gas is discharged out of the detection assembly 4 after detection through the detection assembly 4 is finished.
According to the technical scheme, the invention has the following beneficial effects:
(1) The invention can extract the high-temperature flue gas in the environment with the temperature of about 1500 ℃, and can reduce the temperature of the high-temperature flue gas to 20-25 ℃;
(2) The high-temperature flue gas sampling device can sample high-temperature flue gas, analyze the sample, display detected data in real time through the Internet of things module, and transmit the detected data to the cloud for storage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the specification has been described in terms of embodiments, not every embodiment includes every single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole can be combined as appropriate to form other embodiments as will be apparent to those skilled in the art.
Claims (10)
1. High temperature flue gas analysis and detection sampling device, its characterized in that, including high temperature section sampling subassembly, moderate temperature section sampling subassembly, air cooler device and determine module, high temperature section sampling subassembly and moderate temperature section sampling subassembly are fixed connection, the air cooler device mounting is kept away from the one end of high temperature section sampling subassembly in moderate temperature section sampling subassembly, determine module mounting is kept away from the one end of moderate temperature section sampling subassembly in the air cooler device, high temperature section sampling subassembly, moderate temperature section sampling subassembly, air cooler device and determine module are linked together.
2. The high-temperature flue gas analysis, detection and sampling device as claimed in claim 1, wherein the high-temperature section sampling assembly comprises a sampling tube and a sampling short tube, the sampling short tube is mounted inside the sampling tube, the sampling tube is provided with a through hole, and the through hole penetrates through the sampling tube and one side wall of the sampling short tube.
3. The high-temperature flue gas analysis and detection sampling device of claim 2, wherein the sampling tube is sleeved with a first sleeve, a first asbestos filler is installed between the first sleeve and the sampling tube, a second sleeve is installed between the first asbestos filler and the sampling tube, the first sleeve is sleeved with a fastening flange and a first packing box, a gasket is installed between the fastening flange and the first packing box, and the through hole is located at one end of the sampling tube, which is far away from the middle-temperature section sampling assembly.
4. The high-temperature flue gas analysis, detection and sampling device according to claim 2, wherein the sampling tube is a corundum ceramic tube, the diameter of the sampling tube is 16mm, and the total length of the sampling tube is 1050mm.
5. The high temperature flue gas analyzing, detecting and sampling device of claim 1, wherein the detection assembly comprises a draw pump, a first gas detector, a second gas detector, and a hose that runs through the draw pump, the first gas detector, the second gas detector, and the flow meter.
6. The high-temperature flue gas analysis, detection and sampling device according to claim 1, wherein the middle-temperature section sampling assembly comprises a jacketed pipe, a second asbestos filler is sleeved on the jacketed pipe, a second stuffing box is sleeved on the second asbestos filler, and an exhaust pipe is installed on the jacketed pipe.
7. The high-temperature flue gas analysis, detection and sampling device of claim 6, wherein a second stop valve is installed on the jacketed pipe, a joint is installed between the jacketed pipe and the second stop valve, and a first stop valve is installed at one end, away from the high-temperature section sampling assembly, of the second asbestos packing.
8. The high-temperature flue gas analysis, detection and sampling device of claim 1, wherein the air cooler device comprises a metal pipe, and a metal hose is sleeved on the metal pipe.
9. The high-temperature flue gas analyzing, detecting and sampling device as claimed in claim 8, wherein the metal hose is provided with an exhaust port, and a third stop valve is installed at one end of the air cooler device, which is far away from the middle-temperature section sampling assembly.
10. The high-temperature flue gas analysis, detection and sampling device as claimed in any one of claims 1 to 9, wherein a furnace body is disposed at an end of the high-temperature section sampling assembly away from the air cooler device, the furnace body comprises a furnace body and a refractory layer, a through hole matched with the high-temperature section sampling assembly is formed in the furnace body, and the high-temperature section sampling assembly is inserted into the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211485238.9A CN115773909A (en) | 2022-11-24 | 2022-11-24 | High-temperature flue gas analysis, detection and sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211485238.9A CN115773909A (en) | 2022-11-24 | 2022-11-24 | High-temperature flue gas analysis, detection and sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115773909A true CN115773909A (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211485238.9A Pending CN115773909A (en) | 2022-11-24 | 2022-11-24 | High-temperature flue gas analysis, detection and sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115773909A (en) |
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2022
- 2022-11-24 CN CN202211485238.9A patent/CN115773909A/en active Pending
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