CN113532965B - Coking gas collection apparatus and method - Google Patents
Coking gas collection apparatus and method Download PDFInfo
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- CN113532965B CN113532965B CN202110721803.6A CN202110721803A CN113532965B CN 113532965 B CN113532965 B CN 113532965B CN 202110721803 A CN202110721803 A CN 202110721803A CN 113532965 B CN113532965 B CN 113532965B
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- 238000004939 coking Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 213
- 238000000429 assembly Methods 0.000 claims abstract description 80
- 230000000712 assembly Effects 0.000 claims abstract description 80
- 238000006073 displacement reaction Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 170
- 239000000571 coke Substances 0.000 claims description 48
- 238000004140 cleaning Methods 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 11
- 239000011261 inert gas Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000003570 air Substances 0.000 description 99
- 239000007788 liquid Substances 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000011335 coal coke Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a coking gas collection device and a coking gas collection method, wherein the coking gas collection device comprises an air suction assembly, a plurality of sampling assemblies, a plurality of displacement assemblies and a pump, each of the plurality of sampling assemblies comprises an air inlet pipe, an air outlet pipe and a sampling chamber, the air inlet pipe is communicated with the air suction assembly and the sampling chamber, an air inlet switch is arranged on the air inlet pipe, and a first through hole is arranged on the peripheral wall of the sampling chamber; each of the plurality of displacement assemblies comprises a deformation piece and a pressure sensor, the deformation piece is arranged in the first through hole, the pressure sensor is arranged outside the sampling chamber, and the deformation piece is connected with the pressure sensor; the air outlet pipe is communicated with the pump and the sampling chamber, and an air outlet switch is arranged on the air outlet pipe. The coking gas collecting device can intermittently collect coking gas, can detect the corresponding coking gas at different temperatures in the long-time experimental process, and improves the precision and accuracy of coking gas detection.
Description
Technical Field
The invention relates to the technical field of coal coking, in particular to a coking gas collection device and a coking gas collection method.
Background
The coal blending coking cost is that the mixture ratio of various coals is formed into coke, and the structure and the composition of the coals are complex, so that the components separated out in the coking process show various and complex conditions.
The precipitation of chemical products during the whole carbonization cycle generally has two peaks, which indicate that the thermal decomposition consists of two successive stages. The first precipitation peak is in the range of 350-550 ℃ and emits a great amount of volatile products containing carbon, hydrogen and oxygen, mainly including tar and light oil. The second precipitation peak appears at about 700 ℃, the secondary pyrolysis reaction is intense, and the products are mainly methane and hydrogen.
The components and the precipitation temperatures of different kinds of coal are greatly different, if the precipitated gases at different temperatures can be collected and analyzed, the coking process can be better understood, and the method has positive contribution to improving the quality of coke, saving energy and pertinently treating the escape of volatile gases.
However, the raw gas from the carbonization chamber is usually at a temperature of 700 ℃ or higher, and the current general collecting device using high-molecular polymer as a material cannot directly collect the raw gas. Meanwhile, the manual temperature detection is time-consuming and labor-consuming, so that the design of the intermittent automatic gas collection device controlled along with the temperature change is necessary.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, in one aspect, the embodiment of the invention provides a coking gas collecting device, which can intermittently collect coking gas, can detect the coking gas corresponding to different temperatures in a long-time experiment process, and improves the precision and accuracy of coking gas detection.
Another embodiment of the invention provides a coking gas collection method.
The coking gas collection apparatus according to the embodiment of the first aspect of the present invention comprises: a suction assembly; the sampling device comprises a plurality of sampling assemblies, wherein each of the plurality of sampling assemblies comprises an air inlet pipe, an air outlet pipe and a sampling chamber, the air inlet pipe is communicated with the air suction assembly and the sampling chamber, an air inlet switch is arranged on the air inlet pipe, and a first through hole is formed in the peripheral wall of the sampling chamber; the displacement assemblies comprise deformation pieces and pressure sensors, the deformation pieces are arranged in the first through holes, the pressure sensors are arranged outside the sampling chambers, and the deformation pieces are connected with the pressure sensors; the air outlet pipe is communicated with the pump and the sampling chamber, and an air outlet switch is arranged on the air outlet pipe.
According to the coking gas collection equipment provided by the embodiment of the invention, coking gas at different temperatures in the coal coke oven can be collected through the plurality of mutually independent sampling chambers, and the coking gas can be intermittently collected through the combination of the pump, the air inlet pipe, the air inlet switch, the air outlet pipe and the air outlet switch, so that the corresponding coking gas at different temperatures in a long-time experiment process can be detected, and the precision and the accuracy of the coking gas detection are improved.
In some embodiments, the inhalation assembly comprises an inhalation nozzle, a telescopic air tube communicating the inhalation nozzle with the ventilation valve, and a ventilation valve connected to each of the air inlet tubes of the plurality of sampling assemblies.
In some embodiments, the coking gas collecting device further comprises a gas path distribution turntable, wherein a plurality of second through holes are formed in the gas path distribution turntable, one sides of the second through holes are respectively connected with each gas inlet pipe of the sampling assemblies, the gas path distribution turntable is rotatably connected with the vent valve, and the other sides of the second through holes are respectively communicated with the vent valve.
In some embodiments, the gas path distribution turntable comprises a first portion and a second portion, the first portion and the second portion are relatively rotatable, the first portion is provided with a second through hole, the second through hole in the first portion is connected with the ventilation valve, the second portion is provided with a plurality of second through holes, and the second portion is provided with a plurality of second through holes which are respectively connected with each of the gas inlet pipes of the sampling assemblies.
In some embodiments, a void switch is also provided on the second portion, the second through hole on the first portion being capable of stopping at the void switch.
In some embodiments, each of the plurality of sampling assemblies is in communication with the pump via the gas path distribution dial.
In some embodiments, the coking gas collecting device further comprises a housing, a third through hole is formed in the housing, the ventilation valve is arranged in the third through hole in a penetrating mode, the suction nozzle and the telescopic air pipe are located outside the housing, the gas path distribution turntable, the sampling assembly and the displacement assembly are all arranged in the housing, and the pump is located outside the housing.
In some embodiments, the device further comprises a heater, a temperature controller and a motor controller, wherein the heater is arranged in the shell and is used for heating the gas in the sampling assembly and keeping the gasification state of the gas, the temperature controller is suitable for detecting the temperature in the coking equipment, the temperature controller is connected with the motor controller, and the motor controller is respectively connected with the air suction assembly, the sampling assembly, the displacement assembly, the pump and the gas path distribution turntable.
In some embodiments, the coking gas collection apparatus further comprises a sealing gasket provided with a rotary closing hole, wherein the sealing gasket is arranged in the vent valve, and the rotary closing hole can be opened and closed to adjust the flow area of the vent valve.
In some embodiments, the dust collecting box is arranged between the ventilation valve and the first part, and a filter disc is arranged in the dust collecting box.
In some embodiments, the pump is removably coupled to the outlet tube, the pump including an aspiration pump and a suction pump.
The coking gas collection method according to the embodiment of the first aspect of the invention comprises the following steps: connecting the air suction assembly with the coke oven, detecting the temperature in the coke oven, and when the temperature in the coke oven reaches a first preset temperature; activating one sampling assembly of the plurality of sampling assemblies, and collecting coking gas in the coke oven through the one sampling assembly; detecting the pressure in a sampling chamber in the sampling assembly, closing the sampling assembly when the pressure in the sampling chamber reaches a preset pressure, and turning on a corresponding indicator lamp on the shell; when the temperature in the coke oven reaches the next preset temperature, starting another sampling assembly in the plurality of sampling assemblies, and collecting coking gas in the coke oven through the another sampling assembly; and detecting the pressure in the sampling chamber in the other sampling assembly, and closing the other sampling assembly when the pressure in the sampling chamber reaches the preset pressure until the sampling assemblies are all collected, and all the indicator lamps on the shell are all lighted.
According to the coking gas collection method provided by the embodiment of the invention, the temperature in the coke oven can be detected in real time, and a plurality of mutually independent sampling assemblies are sequentially started to collect the corresponding coking gas at different temperatures, so that the accuracy and precision of coking gas detection are improved.
In some embodiments, the method further comprises, prior to connecting the suction assembly to the coke oven: connecting the air suction assembly with inert gas, sequentially starting a plurality of sampling assemblies, enabling the inert gas to sequentially flow through the plurality of sampling assemblies so as to enable the plurality of sampling assemblies to finish gas washing treatment, and hermetically storing the plurality of sampling assemblies after gas washing treatment
In some embodiments, the method further comprises, after the temperature in the coke oven reaches the first preset temperature: and starting an air path distribution turntable, and connecting the air suction assembly with the plurality of sampling assemblies through the air path distribution turntable.
In some embodiments, until after all of the plurality of sampling components have completed acquisition, further comprising: disconnecting the air suction assembly from the coke oven, and sequentially leading out and detecting coking gas in the plurality of sampling assemblies through an air suction pump; the suction assembly is connected with the cleaning fluid, the sampling assemblies are sequentially started, the cleaning fluid sequentially flows through the sampling assemblies, so that the sampling assemblies complete cleaning treatment, the water pump is replaced, the cleaning fluid is led out, and the sampling assemblies after the cleaning treatment are hermetically stored.
In some embodiments, when the pressure within the sampling chamber reaches a preset pressure, before closing the one sampling assembly, further comprising: and detecting the pressure generated by deformation of the deformation member in the sampling assembly through a pressure sensor, and adjusting the acquisition speed of the sampling assembly according to the change rate of the pressure sensor.
Drawings
FIG. 1 is a schematic view of a coker gas acquisition unit in accordance with an embodiment of the present invention.
Fig. 2 is a top view of a first portion of the gas circuit distribution carousel of fig. 1.
Fig. 3 is a top view of a second portion of the gas circuit distribution carousel of fig. 1.
Reference numerals:
The coking gas collection device 100, the gas suction assembly 1, the gas suction nozzle 11, the telescopic gas pipe 12, the gas vent valve 13, the sealing gasket 14, the rotary closing hole 15, the dust collection box 16, the sampling assembly 2, the gas inlet pipe 21, the gas inlet switch 211, the gas outlet pipe 22, the gas outlet switch 221, the sampling chamber 23, the first through hole 231, the displacement assembly 3, the deformation piece 31, the pressure sensor 32, the pump 4, the gas path distribution turntable 5, the second through hole 501, the first part 51, the second part 52, the rotating shaft 53, the vacancy switch 54, the shell 6, the third through hole 61, the heater 62, the temperature controller 63, the indicator lamp 64 and the motor controller 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1-3, a coked gas acquisition apparatus 100 according to an embodiment of the present invention includes a suction assembly 1, a plurality of sampling assemblies 2, a plurality of displacement assemblies 3, and a pump 4.
Each of the plurality of sampling assemblies 2 includes an air inlet pipe 21, an air outlet pipe 22, and a sampling chamber 23. The air inlet pipe 21 is communicated with the air suction assembly 1 and the sampling chamber 23, an air inlet switch 211 is arranged on the air inlet pipe 21, and a first through hole 231 is arranged on the peripheral wall of the sampling chamber 23.
Each of the plurality of displacement assemblies 3 includes a deformation member 31 and a pressure sensor 32, the deformation member 31 is disposed in the first through hole 231, the pressure sensor 32 is disposed outside the sampling chamber 23, and the deformation member 31 is connected to the pressure sensor 32. Specifically, as shown in fig. 1, a first through hole 231 is formed in a peripheral wall of the sampling chamber 23, the deformation member 31 is filled in the first through hole 231 to seal the first through hole 231, the pressure sensor 32 is arranged on an outer side wall of the sampling chamber 23, the pressure sensor 32 is tightly attached to the deformation member 31, when the pressure in the sampling chamber 23 changes, the deformation member 31 deforms, the deformation member 31 protrudes out of the sampling chamber 23, and at the moment, the deformation member 31 presses the pressure sensor 32, so that the pressure sensor 32 changes.
The air outlet pipe 22 is communicated with the pump 4 and the sampling chamber 23, and an air outlet switch 221 is arranged on the air outlet pipe 22.
The coking gas collection apparatus 100 according to an embodiment of the present invention is embodied as follows:
the air inlet switch 211 is closed, the air outlet switch 221 is opened, the pump 4 is started, and the sampling chamber 23 can be pumped into a negative pressure state by the pump 4. At this time, the deformation member 31 protrudes into the sampling chamber 23, and the deformation member 31 does not press the pressure sensor 32.
Closing the air outlet switch 221 and the pump 4, opening the air inlet switch 211, and as the sampling chamber 23 is in a negative pressure state, gas in the coal coke oven can spontaneously enter the sampling chamber 23 through the air suction assembly 1, the deformation piece 31 gradually protrudes towards the outside of the sampling chamber 23, and when the deformation piece 31 gradually presses the pressure sensor 32, the air inlet switch 211 is closed, and the collection process is finished.
With the gradual rise of the temperature in the coke oven, the sampling assemblies 2 are started in sequence, so that the coking gas corresponding to different temperatures can be detected in the long-time experiment process. When the collection of the plurality of sampling assemblies 2 is completed, the operator can then conduct out the gas in the plurality of sampling chambers 23 and detect the gas in the sampling chambers 23.
According to the coking gas collection device 100 provided by the embodiment of the invention, an operator can collect the gas in the coal coke oven through the sampling chamber 23, and can intermittently collect the coking gas through the combination of the pump 4, the air inlet pipe 21, the air inlet switch 211, the air outlet pipe 22 and the air outlet switch 221, so that the corresponding coking gas at different temperatures in a long-time experiment process can be detected, and the precision and accuracy of the coking gas detection are improved.
In some embodiments, specifically, as shown in fig. 1, the number of the air inlet pipe 21, the air inlet switch 211, the air outlet pipe 22, the air outlet switch 221, and the sampling chamber 23 is 8.
It will be appreciated that there are generally two peaks in the evolution of chemical products throughout the coking cycle of coal, indicating that thermal decomposition consists of two successive stages. The first precipitation peak is in the range of 350-550 ℃ and emits a great amount of volatile products containing carbon, hydrogen and oxygen, mainly including tar and light oil components. The second precipitation peak appears at about 700 ℃, the secondary pyrolysis reaction is intense, and the products are mainly methane and hydrogen.
The coking gas collection apparatus 100 of the present invention can collect coking gas intermittently as the temperature in the coke oven changes, for example, when the temperature in the coke oven reaches 300 ℃, one sampling chamber 23 is activated, and then one sampling chamber 23 is activated again every 50 ℃ higher in the temperature in the coke oven.
Thus, the coking gas collection apparatus 100 of the present invention can collect the coking gas at different temperatures in the coke oven by intermittently activating the sampling chamber 23.
In some embodiments, as shown in FIG. 1, the inhalation assembly 1 comprises an inhalation nozzle 11, a telescopic air tube 12 and a ventilation valve 13, the telescopic air tube 12 communicating with the inhalation nozzle 11 and the ventilation valve 13, the ventilation valve 13 being connected to each of the air inlet tubes 21 of the plurality of sampling assemblies 2.
Specifically, the air valve 13 is provided with a wide-mouth air suction nozzle 11 and a telescopic air pipe 12, the air suction nozzle 11 can conveniently collect air, and the air suction nozzle 11 and the telescopic air pipe 12 are made of fireproof and high-temperature resistant materials. The ventilation valve 13 controls the amount of intake air and ensures tightness.
In some embodiments, as shown in fig. 1-3, the coking gas collection apparatus 100 further includes a gas path distribution turntable 5, where a plurality of second through holes 501 are provided on the gas path distribution turntable 5, one side (for example, a lower side of the gas path distribution turntable 5 in fig. 1) of the plurality of second through holes 501 is respectively connected to each of the gas inlet pipes 21 of the plurality of sampling assemblies 2, the gas path distribution turntable 5 is rotatably connected to the gas vent valve 13, and another side (for example, an upper side of the gas path distribution turntable 5 in fig. 1) of the plurality of second through holes 501 is respectively connected to the gas vent valve 13. Thus, each of the plurality of sampling chambers 23 can be operated independently, and mutual interference between the plurality of sampling chambers 23 is not generated.
In some embodiments, as shown in fig. 1-3, the gas path distribution dial 5 includes a first portion 51 and a second portion 52. The first portion 51 and the second portion 52 are relatively rotatable, a second through hole 501 is formed in the first portion 51, the second through hole 501 in the first portion 51 is connected with the air vent valve 13, a plurality of second through holes 501 are formed in the second portion 52, and the plurality of second through holes 501 in the second portion 52 are respectively connected with each air inlet pipe 21 of the plurality of sampling assemblies 2.
Specifically, the first portion 51 and the second portion 52 are substantially in a circular plate shape, and the first portion 51 and the second portion 52 are both sleeved on the rotating shaft 53, and contact surfaces between the first portion 51 and the second portion 52 are both planes, so that the sealing performance of the air path distribution turntable 5 is improved.
When the first portion 51 rotates relative to the second portion 52, one second through hole 501 of the first portion 51 may sequentially cooperate with 8 second through holes 501 of the second portion 52 to sequentially operate 8 sampling chambers 23.
In some embodiments, as shown in fig. 1-3, a void switch 54 is also provided on the second portion 52, and the second through hole 501 on the first portion 51 can stop at the void switch 54.
Specifically, the second portion 52 is further provided with a vacancy switch 54, so that when the air path distribution turntable 5 is not started, the second through hole 501 on the first portion 51 can be stopped at the vacancy switch 54, and at this time, each of the plurality of sampling assemblies 2 is disconnected from the air suction assembly 1.
In some embodiments, as shown in fig. 1, each outlet tube 22 of the plurality of sampling assemblies 2 is in communication with the pump 4 via the air path distribution dial 5. It will be appreciated that in the present invention there are 2 gas path distribution turntables 5, one gas path distribution turntable 5 is provided between the ventilation valve 13 and the plurality of gas inlet pipes 21, and the other gas path distribution turntable 5 is provided between the pump 4 and the plurality of gas outlet pipes 22.
In some embodiments, as shown in fig. 1, the coking gas collecting apparatus 100 further includes a housing 6, a third through hole 61 is provided on the housing 6, a ventilation valve 13 is penetratingly provided in the third through hole 61, the suction nozzle 11 and the telescopic air pipe 12 are located outside the housing 6, the air path distribution turntable 5, the sampling assembly 2 and the displacement assembly 3 are all provided in the housing 6, and the pump 4 is located outside the housing.
Thus, a plurality of sampling chambers 23 can be secured by the housing 6, making the coker gas acquisition unit 100 more stable during use.
In some embodiments, the coker gas acquisition unit 100 also includes a heater 62, a temperature controller 63, and a motor controller 7. A heater 62 is provided in the housing 6 for heating the gas in the sampling assembly 2 to maintain the gasified state of the gas, and a temperature controller 63 is adapted to detect the temperature in a coking apparatus (e.g., a coke oven), the temperature controller 63 being connected to a motor controller 7, the motor controller 7 being connected to the suction assembly 1, the sampling assembly 2, the displacement assembly 3, the pump 4 and the gas path distribution turntable 5, respectively.
It is understood that the gas in the coke oven is a high-temperature gas, and the temperature in the housing 6 is heated by the heater 62, so that the high-temperature gas in the sampling chamber 23 is prevented from being liquefied and condensed. It will be appreciated that the motor controller 7 is responsible for the power supply and automation of the coker gas acquisition unit 100.
The temperature probe of the temperature controller 63 can extend into the coke oven and detect the temperature in the coke oven in real time, and when the temperature in the coke oven reaches a first preset temperature, the temperature controller 63 transmits a temperature signal to the motor controller 7.
The motor controller 7 controls the gas path distribution turntable 5 to rotate, and is communicated with the gas suction assembly 1 and the first sampling assembly 2 in the plurality of sampling assemblies 2 through the gas path distribution turntable 5, and the first sampling assembly 2 starts to collect. At this time, the displacement assembly 3 disposed on the first sampling assembly 2 can detect the pressure in the first sampling assembly 2 in real time, and when the pressure in the first sampling assembly 2 reaches the preset pressure, the displacement assembly 3 transmits a pressure signal to the motor controller 7, the motor controller 7 closes the first sampling assembly 2, and the first sampling assembly 2 completes the collection.
Preferably, the housing 6 is made of a light-weight, high-temperature-resistant metal alloy, and the housing 6 is sealed. All the pipelines and the inner walls in the shell 6 are made of high-temperature resistant and antistatic materials.
In some embodiments, as shown in FIG. 1, the coked gas acquisition unit 100 further includes a sealing gasket 14, the sealing gasket 14 is provided with a rotary closing hole 15, the sealing gasket 14 is provided in the vent valve 13, and the rotary closing hole 15 can be opened and closed to adjust the flow area of the vent valve 13.
Specifically, the sealing gasket 14 is provided in the vent valve 13, and the outer peripheral surface of the sealing gasket 14 is closely connected to the inner peripheral surface of the vent valve 13, i.e., the vent valve 13 can only circulate through the rotary closing hole 15. The rotary closing hole 15 is located right below the inlet of the vent valve 13, the rotary closing hole 15 is of a petal-shaped rotary structure, and the rotary closing hole 15 can be opened and closed to adjust the flow area of the rotary closing hole 15, and then the flow area of the vent valve 13 is adjusted.
In some embodiments, as shown in FIG. 1, the coking gas collection apparatus 100 further includes a dust collection box 16, the dust collection box 16 being disposed between the vent valve 13 and the first portion 51, and a filter sheet (not shown) being disposed within the dust collection box 16. The dust collection box 16 can be used for filtering dust carried in high-temperature gas, and is beneficial to improving the detection precision of the coking gas collection device 100. Wherein, the filter sheet can be made of high temperature resistant materials.
In some embodiments, as shown in fig. 1, the pump 4 is removably connected to the outlet tube 22, and the pump 4 includes an aspiration pump and a suction pump.
It will be appreciated that the suction pump is used to pump the sampling chamber 23 to a negative pressure, and the suction pump is used to clean the coking gas collection apparatus 100, for example, the suction nozzle 11 may be inserted into the cleaning liquid, and the suction pump may be activated, and the cleaning liquid flows through the suction nozzle 11, the telescopic air pipe 12, the ventilation valve 13, the air inlet pipe 21, the sampling chamber 23, and the air outlet pipe 22 in this order, so that the cleaning process is completed.
Further, the suction pump is also used for guiding out coking gas in the sampling chamber 23.
Preferably, the coking gas collection apparatus 100 of the present invention further includes 8 indicator lights 64, and the 8 indicator lights 64 are respectively connected to the 8 sampling chambers 23 to display the operating states of the sampling chambers 23.
The working principle of the coking gas collection apparatus 100 of the present invention is as follows:
1. after the shell 6 is adjusted in a sealing way and placed stably, the direction of the suction nozzle 11 is adjusted, the telescopic air pipe 12 is stretched to a proper length, the suction nozzle 11 is aligned with an air source, a power switch of the motor controller 7 is turned on, and the air channel distribution turntable 5 connects an air inlet pipe 21 and an air outlet pipe 22 to a sampling chamber 23.
2. The heater 62 is activated to maintain the inside of the housing 6 at a stable temperature so that the collected char gas does not condense.
3. When the temperature in the coke oven reaches a preset first temperature point (300 ℃ for example), the air pump pumps the inside of one sampling chamber 23 into negative pressure, then the air pumping is stopped, and one end of an air outlet pipe 22 of the sampling chamber 23 is automatically closed. The vent valve 13 is opened and ambient air will enter the sampling chamber 23 through the vent valve 13 and the inlet tube 21.
4. As the gas in the sampling chamber 23 grows, the deformation member 31 deforms, and the deformation member 31 acts on the pressure sensor 32. The pressure sensor 32 senses the pressure change and feeds back the pressure change to the motor controller 7, and the motor controller 7 adjusts the air inflow through adjusting the sealing gasket 14 so as to avoid too fast or too slow collection.
5. When the pressure sensor 32 reaches the set pressure, the vent valve 13 is closed and an indicator light 64 is turned on to complete the collection of gas from one of the sample chambers 23.
6. The motor controller 7 controls the gas path distribution turntable 5 to rotate, and connects the other gas inlet pipe 21 and the other gas outlet pipe 22 to the other sampling chamber 23, and repeats the above steps 3-5.
7. The indicator light 64 is illuminated in sequence with the collection of each of the sample chambers 23. After all the time tasks are completed, the air path distribution turntable 5 is turned to the vacant position, the motor controller 7 stops working, and collection is completed.
8. After the collection, when the detection of the air guiding and exhausting is needed, the state of the air vent valve 13 is adjusted, so that the air vent valve 13 and the air inlet pipe 21 are not opened. The gas in the corresponding sampling chamber 23 is led out as required.
The coking gas collection method according to the embodiment of the invention comprises the following steps: connecting the suction assembly 1 to a coke oven (not shown), detecting the temperature inside the coke oven, when the temperature inside the coke oven reaches a first preset temperature; one sampling assembly 2 of the plurality of sampling assemblies 2 is activated, and the coking gas in the coke oven is collected through the one sampling assembly 2. The pressure in the sampling chamber 23 of one sampling assembly 2 is detected, and when the pressure in the sampling chamber 23 reaches a preset pressure, one sampling assembly 2 is closed, and the corresponding indicator lamp 63 on the housing 6 is turned on.
When the temperature in the coke oven reaches the next preset temperature, starting another sampling assembly 2 in the plurality of sampling assemblies 2, and collecting coking gas in the coke oven through the other sampling assembly 2; the pressure in the sampling chamber 23 in the other sampling assembly 2 is detected, and when the pressure in the sampling chamber 23 reaches the preset pressure, the other sampling assembly 2 is closed until the sampling assemblies 2 are all collected, and all the indicator lamps 63 on the shell 6 are all turned on.
In some embodiments, the suction assembly 1 and the coke oven are further comprised before being connected: the air suction assembly 1 is connected with inert gas, the sampling assemblies 2 are sequentially started, the inert gas sequentially flows through the sampling assemblies 2, so that the sampling assemblies 2 finish gas washing treatment, and the sampling assemblies 2 after gas washing treatment are hermetically stored.
In particular, the inert gas is stored in a gas storage tank, and the inert gas can be nitrogen or other rare gases. The air suction assembly 1 is communicated with the air storage tank, the air suction pump is started, and nitrogen flows through the plurality of sampling assemblies 2 in sequence.
In some embodiments, the method further comprises, after the temperature in the coke oven reaches the first preset temperature: the gas path distribution turntable 5 is started, and the gas suction assembly 1 is respectively connected with the plurality of sampling assemblies 2 through the gas path distribution turntable 5.
In some embodiments, until after the plurality of sampling assemblies 2 have all completed acquisition, further comprises: disconnecting the air suction assembly 1 from the coke oven, and sequentially leading out and detecting coking gas in the plurality of sampling assemblies 2 through an air suction pump; the air suction assembly 1 is connected with the cleaning liquid 2, the sampling assemblies 2 are sequentially started, the cleaning liquid sequentially flows through the sampling assemblies 2, so that the sampling assemblies 2 are subjected to cleaning, a water pump is replaced, the cleaning liquid is led out, and the sampling assemblies 2 after the cleaning are hermetically stored.
Specifically, the cleaning liquid is stored in the liquid storage tank, and the cleaning liquid can be water or other liquid. The air suction assembly 1 is communicated with the liquid storage tank, the water suction pump is started, and cleaning liquid sequentially flows through the sampling assemblies 2.
In some embodiments, when the pressure in the sampling chamber 23 reaches a preset pressure, the method further comprises, before closing one sampling assembly 2: the pressure generated by deformation of the deformable member in one sampling assembly 2 is detected by the pressure sensor 32, and the acquisition speed of one sampling assembly 2 is adjusted according to the rate of change of the pressure sensor 32.
Specifically, when the pressure sensor 32 changes rapidly, the motor controller 7 adjusts the rotary closing hole 15 to reduce the flow area of the rotary closing hole 15, thereby reducing the flow rate of the ventilation valve 13, and slowing down the speed of the coking gas entering the sampling chamber 23, which is beneficial to improving the safety of the present invention.
The coking gas collection method according to the embodiment of the invention comprises the following specific procedures:
1. the air suction assembly 1 is connected with inert gas, the air suction pump is started, the plurality of sampling assemblies 2 are sequentially subjected to air washing treatment, and the plurality of sampling assemblies 2 subjected to air washing treatment are hermetically stored.
2. The gas path distribution turntable 5 is adjusted to adjust the second through hole 501 on the first part 51 to the position of the vacancy switch 54 on the second part 52, and at this time, the plurality of sampling assemblies 2 are disconnected from the gas suction assembly 1.
3. The suction unit 1 is connected to the coke oven, and the temperature controller 63 is activated, and the temperature controller 63 is used to detect the temperature in the coke oven.
4. When the temperature in the coke oven reaches the first preset temperature, the temperature controller 63 transmits a temperature signal to the motor controller 7, and the motor controller 7 controls the gas path distribution turntable 5 to rotate, and the gas path distribution turntable 5 is communicated with the gas suction assembly 1 and the first sampling assembly 2. The motor controller 7 controls the air outlet switch 221 in the first sampling assembly 2 to be opened, and starts the suction pump to pump the sampling chamber 23 in the first sampling assembly 2 into a negative pressure state. The outlet switch 221 is closed and the inlet switch 211 is opened so that the coking gas enters the sampling chamber 23 in the first sampling assembly 2.
5. The first pressure sensor 32 detects the pressure in the sampling chamber 23 in the first sampling assembly 2, and when the pressure in the sampling chamber 23 in the first sampling assembly 2 reaches a preset threshold, the motor controller 7 closes the air inlet switch 211, and the first sampling assembly 2 ends the collection.
6. The temperature in the coke oven continues to rise, and when the temperature in the coke oven reaches a second preset temperature, steps 4-5 are repeated, and the second sampling assembly 2 is started until all 8 sampling assemblies 2in the invention are used for completing the acquisition.
7. After all 8 sampling assemblies 2 in the invention are collected, the gas path distribution turntable 5 is adjusted, the second through hole 501 on the first part 51 is adjusted to the position of the vacancy switch 54 on the second part 52, and at the moment, the sampling assemblies 2 are disconnected from the air suction assembly 1.
The invention solves the problem that the existing gas collecting device can not collect high-temperature gas continuously in the coal tar field. The coke gas has higher temperature and complex components, and the manual collection is time-consuming and labor-consuming. The invention completes the work of automatically and intermittently collecting the coal coke gas by a multi-channel, multi-sampling chamber, temperature and gas path system control method. The invention fully considers the characteristics of the coke gas and sets a corresponding treatment method aiming at the characteristics.
The device is portable and easy to place, and is convenient to clean due to various designs such as the water suction pump, the detachable dust collection box and the like. The fire-resistant, high-temperature-resistant and antistatic design is adopted, so that dangerous explosion of the collected gas is avoided. The joint of the device is subjected to sealing treatment, so that the tightness of the device is ensured. Through the automatic setting of motor, adjust the air input at any time, accomplish automatic acquisition to the suggestion is gathered and is accomplished.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (16)
1. A coking gas collection apparatus, comprising:
A suction assembly;
The sampling device comprises a plurality of sampling assemblies, wherein each of the plurality of sampling assemblies comprises an air inlet pipe, an air outlet pipe and a sampling chamber, the air inlet pipe is communicated with the air suction assembly and the sampling chamber, an air inlet switch is arranged on the air inlet pipe, and a first through hole is formed in the peripheral wall of the sampling chamber;
The displacement assemblies comprise deformation pieces and pressure sensors, the deformation pieces are filled in the first through holes to seal the first through holes, the pressure sensors are arranged on the outer side walls of the sampling chambers, and the deformation pieces are tightly attached to the pressure sensors;
When the pressure in the sampling chamber changes, the deformation piece deforms, and the deformation piece protrudes out of the sampling chamber to press the pressure sensor, so that the pressure value detected by the pressure sensor changes;
The air outlet pipe is communicated with the pump and the sampling chamber, and an air outlet switch is arranged on the air outlet pipe.
2. The coker gas collection unit of claim 1, wherein said suction assembly comprises a suction nozzle, a telescoping gas pipe in communication with said suction nozzle and said ventilation valve, and a ventilation valve connected to each of said inlet pipes of a plurality of said sampling assemblies.
3. The coking gas collection apparatus according to claim 2, further comprising a gas path distribution turntable, wherein a plurality of second through holes are provided on the gas path distribution turntable, one sides of the plurality of second through holes are respectively connected to each of the gas inlet pipes of the plurality of sampling assemblies, the gas path distribution turntable is rotatably connected to the vent valve, and the other sides of the plurality of second through holes are respectively communicated to the vent valve.
4. The coking gas collection apparatus according to claim 3, wherein said gas path distribution turntable comprises a first portion and a second portion, said first portion and said second portion being rotatable relative to each other, said first portion having one of said second through holes, said second through holes in said first portion being connected to said vent valve, said second portion having a plurality of said second through holes each connected to each of said inlet pipes of said plurality of said sampling assemblies.
5. The coking gas collection apparatus according to claim 4 wherein a vacancy switch is also provided on said second portion, said second through hole on said first portion being capable of stopping at said vacancy switch.
6. The coked gas acquisition unit of claim 5, wherein each of said outlet pipes of said plurality of sampling assemblies is in communication with said pump via said gas path distribution turntable.
7. The coking gas collection apparatus according to claim 5, further comprising a housing, wherein a third through hole is provided in the housing, the vent valve is disposed through the third through hole, the suction nozzle and the telescopic air pipe are disposed outside the housing, the air path distribution turntable, the sampling assembly and the displacement assembly are disposed inside the housing, and the pump is disposed outside the housing.
8. The coker gas collection unit of claim 7, further comprising a heater disposed within said housing for heating the gas within said sampling assembly to maintain a vaporized state of the gas, a temperature controller adapted to detect a temperature within the coker, said temperature controller being coupled to said motor controller, said motor controller being coupled to said suction assembly, said sampling assembly, said displacement assembly, said pump, and said gas path distribution dial, respectively.
9. The coking gas collection apparatus according to claim 7, further comprising a sealing gasket having a rotating closed orifice disposed therein, said sealing gasket being disposed within said vent valve, said rotating closed orifice being openable and closable to adjust a flow area of said vent valve.
10. The coking gas collection apparatus according to claim 5, further comprising a dust collection box disposed between the vent valve and the first portion, the dust collection box having a filter sheet disposed therein.
11. The coked gas collection unit of claim 1, wherein said pump is removably connected to said outlet conduit, said pump comprising an aspiration pump and a suction pump.
12. A coking gas collection method using the coking gas collection apparatus according to any one of claims 1 to 11, comprising:
connecting the air suction assembly with the coke oven, detecting the temperature in the coke oven, and when the temperature in the coke oven reaches a first preset temperature;
Activating one sampling assembly of the plurality of sampling assemblies, and collecting coking gas in the coke oven through the one sampling assembly;
Detecting the pressure in a sampling chamber in the sampling assembly, closing the sampling assembly when the pressure in the sampling chamber reaches a preset pressure, and turning on a corresponding indicator lamp on the shell;
When the temperature in the coke oven reaches the next preset temperature, starting another sampling assembly in the plurality of sampling assemblies, and collecting coking gas in the coke oven through the another sampling assembly;
and detecting the pressure in the sampling chamber in the other sampling assembly, and closing the other sampling assembly when the pressure in the sampling chamber reaches the preset pressure until the sampling assemblies are all collected, and all the indicator lamps on the shell are all lighted.
13. The method for collecting coking gas according to claim 12, further comprising, prior to connecting the suction assembly to the coke oven:
And connecting the air suction assembly with inert gas, sequentially starting a plurality of sampling assemblies, and sequentially enabling the inert gas to flow through the plurality of sampling assemblies so as to enable the plurality of sampling assemblies to finish gas washing treatment, and hermetically storing the plurality of sampling assemblies after gas washing treatment.
14. The method of claim 12, further comprising, after the temperature in the coke oven reaches the first predetermined temperature: and starting an air path distribution turntable, and connecting the air suction assembly with the plurality of sampling assemblies through the air path distribution turntable.
15. The method of collecting coking gas according to claim 12, further comprising, until after all of the plurality of sampling assemblies complete the collection: disconnecting the air suction assembly from the coke oven, and sequentially leading out and detecting coking gas in the plurality of sampling assemblies through an air suction pump;
The suction assembly is connected with the cleaning fluid, the sampling assemblies are sequentially started, the cleaning fluid sequentially flows through the sampling assemblies, so that the sampling assemblies complete cleaning treatment, the water pump is replaced, the cleaning fluid is led out, and the sampling assemblies after the cleaning treatment are hermetically stored.
16. The method of claim 12, further comprising, before closing the one sampling assembly, when the pressure within the sampling chamber reaches a preset pressure:
And detecting the pressure generated by deformation of the deformation member in the sampling assembly through a pressure sensor, and adjusting the acquisition speed of the sampling assembly according to the change rate of the pressure sensor.
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| CN107389386A (en) * | 2017-09-06 | 2017-11-24 | 中国农业科学院草原研究所 | Soil Trace Gases harvester and method |
| CN212082993U (en) * | 2020-04-22 | 2020-12-04 | 重庆鑫蒲江环境检测有限公司 | Gas sampling gun |
| CN212031074U (en) * | 2020-04-27 | 2020-11-27 | 四川中资时代科技有限公司 | Sampling vehicle for air detection |
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| CN109580297A (en) * | 2018-07-03 | 2019-04-05 | 鞍钢股份有限公司 | Coke oven smoke detection device and detection method |
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