CN117538478A - Oil-containing sludge combustion test device and method - Google Patents
Oil-containing sludge combustion test device and method Download PDFInfo
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- CN117538478A CN117538478A CN202311422718.5A CN202311422718A CN117538478A CN 117538478 A CN117538478 A CN 117538478A CN 202311422718 A CN202311422718 A CN 202311422718A CN 117538478 A CN117538478 A CN 117538478A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 99
- 239000010802 sludge Substances 0.000 title claims abstract description 94
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 131
- 239000003546 flue gas Substances 0.000 claims abstract description 131
- 239000007789 gas Substances 0.000 claims description 79
- 239000012159 carrier gas Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- 239000001301 oxygen Substances 0.000 claims description 24
- 229910052760 oxygen Inorganic materials 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 238000001179 sorption measurement Methods 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 18
- 239000003513 alkali Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 239000003463 adsorbent Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 14
- 231100000719 pollutant Toxicity 0.000 abstract description 14
- 238000007405 data analysis Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000779 smoke Substances 0.000 description 8
- 239000002002 slurry Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of sludge-containing test devices and discloses an oil-containing sludge combustion test device and method. According to the oil-containing sludge combustion test device, the oil-containing sludge samples can be subjected to combustion treatment by changing the combustion time and the combustion temperature of the tube furnace, a plurality of oil sludge samples can be arranged, each oil sludge sample is burnt by adopting different combustion temperatures and combustion times, data are recorded, four types of conventional pollutants of CO2 and CO, NOX, SO2 in flue gas obtained by the oil-containing sludge of each sample under specific combustion temperatures and combustion times are recorded, data analysis and comparison are performed, so that the optimal combustion time and the optimal combustion temperature of the oil-containing sludge are obtained, and theoretical support is further provided for means adopted for the subsequent batch treatment of the oil-containing sludge.
Description
Technical Field
The invention relates to the technical field of sludge-containing test devices, in particular to an oil-containing sludge combustion test device and method.
Background
The oily sludge is sludge mixed with crude oil, various finished oil, residual oil and other heavy oil, mainly contains crude oil, finished oil, sediment, mineral substances, diesel oil, white oil, waxy oil, asphalt, sediment, rock debris and other mixtures, is harmful to human bodies, plants and organisms in water, and is one of main pollutants in petroleum and petrochemical industry.
At present, when the oily sludge is treated in a combustion mode, the combustion flue gas contains flue gas pollutants such as CO2, CO, NOX, SO2 and the like, and because the mixture content in the sludge is different, when the oily sludge of different types is subjected to combustion treatment, the optimal combustion time and the optimal combustion temperature are difficult to determine, so that the emission factors (total weight of the flue gas pollutants/the oily sludge) of the flue gas pollutants in the combustion flue gas can be obtained, and the large-scale combustion treatment of the oily sludge can not be accurately guided.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides an oil-containing sludge combustion test device and an oil-containing sludge combustion test method.
The oil-containing sludge combustion test device comprises a first gas storage tank, a second gas storage tank, a flow controller, a mixer, a tube furnace, a flue gas analyzer and a tail gas treatment device, wherein the first gas storage tank is used for storing carrier gas, and the second gas storage tank is used for storing oxygen; the flow controller is provided with a carrier gas inlet, an oxygen inlet, a carrier gas outlet and an oxygen outlet, wherein the carrier gas inlet is communicated with the first gas storage tank, and the oxygen inlet is communicated with the second gas storage tank; the mixer is provided with a first air inlet, a second air inlet and a mixed gas outlet, the first air inlet is communicated with the carrier gas outlet, the second air inlet is communicated with the oxygen outlet, and the mixer uniformly mixes the carrier gas and the oxygen and then discharges the mixed gas from the mixed gas outlet; the tubular furnace combustion chamber, and a mixed gas inlet and a smoke outlet which are communicated with the combustion chamber, wherein the mixed gas inlet is communicated with the mixed gas outlet; the flue gas analyzer is communicated with the flue gas outlet; the tail gas treatment device is communicated with the flue gas analyzer.
In some embodiments, the oily sludge combustion test device of the embodiments of the invention further comprises a cooler having a flue gas inlet in communication with the flue gas outlet of the tube furnace and a cooling flue gas outlet in communication with the flue gas analyzer, the cooler being for cooling the flue gas.
In some embodiments, the oil-containing sludge combustion test apparatus of the embodiments of the present invention further comprises a dryer having a cooling flue gas inlet in communication with the cooling flue gas outlet of the cooler and a drying flue gas outlet in communication with the flue gas analyzer, the dryer being for drying flue gas.
In some embodiments, the mixed gas outlet of the mixer is communicated with the mixed gas inlet of the tube furnace through a first pipeline, a first control valve is arranged on the first pipeline, the dryer is further provided with a third air inlet, the mixed gas outlet of the mixer is communicated with the third air inlet of the dryer through a second pipeline, and a second control valve is arranged on the second pipeline.
In some embodiments, the exhaust gas treatment device comprises a housing, a liquid storage tank and a spray head, wherein the housing is provided with an adsorption cavity, and an exhaust gas inlet and a clean flue gas outlet which are communicated with the adsorption cavity, the exhaust gas inlet is communicated with the outlet of the flue gas analyzer, and an adsorbent is arranged in the adsorption cavity; the liquid storage tank is arranged on the shell and used for storing alkali liquor, the spray head is communicated with the liquid storage tank and arranged in the adsorption cavity, and the spray head is used for spraying alkali liquor into the adsorption cavity.
In some embodiments, the exhaust gas treatment device further comprises a plurality of grids, the grids are arranged at intervals along the direction from the exhaust gas inlet to the clean flue gas outlet, the grids are provided with containing cavities and vent holes communicated with the containing cavities, the adsorbent is arranged in the containing cavities, and the spray head is arranged between the exhaust gas inlet and the grids and the spray nozzle of the spray head is arranged towards the grids.
In some embodiments, the tail gas treatment device further comprises a liquid collecting hopper, the liquid collecting hopper is arranged at the bottom end part of the shell and is positioned at the grid and the clean flue gas outlet, the liquid collecting hopper is communicated with the adsorption cavity and is used for collecting alkali liquid after absorbing flue gas, and the liquid collecting hopper is provided with a liquid outlet.
According to the method for testing the oil-containing sludge combustion, disclosed by the embodiment of the invention, the flow rate of carrier gas is set to be 40-60 ml/min when the oil-containing sludge is combusted in the tubular furnace based on the oil-containing sludge combustion test device disclosed by any embodiment.
In some embodiments, the oil-containing sludge has a combustion temperature within the tube furnace of 775 ℃ to 825 ℃.
In some embodiments, the oil-containing sludge is burned in the tube furnace for a period of 180min to 200min.
After equipment and management cleaning of the oily sludge combustion test device provided by the embodiment of the invention are finished, a certain weight of an oily sludge sample to be tested (for example, 5g of oily sludge) is placed into a combustion chamber of a tubular furnace, the tubular furnace is continuously heated to a preset temperature at 20 ℃/min, and the oily sludge is combusted at the preset temperature. Valves on the first air storage tank and the second air storage tank are opened, carrier gas and oxygen enter the mixer through the flow controller to be mixed uniformly, and mixed gas entersAfter the flue gas enters the tubular furnace, oxygen serves as a combustion improver so that the oil-containing sludge can be combusted normally in the combustion chamber, and flue gas generated by combustion is carried out of the combustion chamber through carrier gas and enters a flue gas analyzer to analyze pollutants in the flue gas, and the flue gas analyzer analyzes CO in the flue gas 2 、CO、NO X And SO 2 Four types of conventional pollutants, namely, the flue gas analyzed by the flue gas analyzer enters the tail gas treatment device 7 for treatment and is discharged into the atmosphere.
Therefore, the oil-containing sludge combustion test device provided by the embodiment of the invention can burn oil-containing sludge samples by changing the combustion time and the combustion temperature of the tube furnace, can set a plurality of oil-containing sludge samples, burns each oil-containing sludge sample by adopting different combustion temperatures and combustion times, records data, records four types of conventional pollutants of CO2 and CO, NOX, SO2 in flue gas obtained by the oil-containing sludge of each sample under specific combustion temperatures and combustion times, and performs data analysis and comparison to obtain the optimal combustion time and the optimal combustion temperature of the oil-containing sludge.
Drawings
FIG. 1 is a schematic diagram of an oily sludge combustion test apparatus in accordance with an embodiment of the present invention.
Fig. 2 is a schematic structural view of an exhaust gas treatment device according to an embodiment of the present invention.
Reference numerals:
1. a first air storage tank; 2. a second air storage tank; 3. a flow controller; 301. a carrier gas inlet; 302. an oxygen inlet; 303. a carrier gas outlet; 304. an oxygen outlet; 4. a mixer; 401. a first air inlet; 402. a second air inlet; 403. a mixed gas outlet; 5. a tube furnace; 501. a mixed gas inlet; 502. a flue gas outlet; 6. a flue gas analyzer; 7. a tail gas treatment device; 701. a housing; 7011. an adsorption chamber; 7012. a tail gas inlet; 7013. a clean flue gas outlet; 702. a liquid storage tank; 703. a spray head; 704. a grille; 705. a liquid collecting hopper; 7051. a liquid outlet; 8. a cooler; 801. a flue gas inlet; 802. a cooler flue gas outlet; 9. a dryer; 901. a cooling flue gas inlet; 902. a dry flue gas outlet; 903. a third air inlet; 10. a first pipeline; 11. a first control valve; 12. a second pipeline; 13. and a second control valve.
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 and 2, the oil-containing sludge combustion test device according to the embodiment of the invention comprises a first air storage tank 1, a second air storage tank 2, a flow controller 3, a mixer 4, a tube furnace 5, a flue gas analyzer 6 and a tail gas treatment device 7. The first gas storage tank 1 is used for storing carrier gas (such as nitrogen and other gases), the second gas storage tank 2 is used for storing oxygen, and the combustion improver is oil-containing sludge which is combusted in the tube furnace 5.
The flow controller 3 has a carrier gas inlet 301, an oxygen inlet 302, a carrier gas outlet 303, and an oxygen outlet 304, the carrier gas inlet 301 being in communication with the first air tank 1, the oxygen inlet 302 being in communication with the second air tank 2. The mixer 4 has a first air inlet 401, a second air inlet 402, and a mixture outlet 403, the first air inlet 401 communicates with the carrier gas outlet 303, the second air inlet 402 communicates with the oxygen outlet 304, and the mixer 4 mixes the carrier gas and oxygen uniformly and then discharges the mixture from the mixture outlet 403. The tube furnace 5 has a combustion chamber, a mixed gas inlet 501 and a flue gas outlet 502, the mixed gas inlet 501 is communicated with the mixed gas outlet 403, the flue gas analyzer 6 is communicated with the flue gas outlet 502, and the tail gas treatment device 7 is communicated with the flue gas analyzer 6.
In the testing process of the oil-containing sludge combustion testing device, firstly, equipment and pipelines of the testing device are cleaned to discharge other gases in the equipment and the pipelines, so that the accuracy of testing results is prevented from being influenced by the other gases. Specifically, the valve on the first gas holder 1 is opened, the carrier gas in the first gas holder 1 enters the flow controller 3 through the carrier gas inlet 301, the carrier gas flow rate is regulated by the flow controller 3, the carrier gas enters the mixer 4, and the carrier gas entering the mixer 4 is discharged through the mixed gas outlet 403. At this time, the tube furnace 5 is kept closed, the flue gas analyzer 6 is opened to suck air, and the carrier gas discharged from the outlet of the mixer 4 flows in the equipment and the pipeline to discharge other gases in the equipment and the pipeline.
After the equipment and management of the test device are cleaned, a certain weight of the oil-containing sludge sample to be tested (for example, 5g of the oil-containing sludge) is placed into a combustion chamber of the tube furnace 5, the tube furnace 5 is continuously heated to a preset temperature at 20 ℃/min, and the oil-containing sludge is combusted at the preset temperature. The valve on the second air storage tank 2 is opened, carrier gas and oxygen enter the mixer 4 through the flow controller 3 and are mixed uniformly, after the mixed gas enters the tubular furnace 5, the oxygen serves as a combustion improver so that the oil-containing sludge can be combusted normally in the combustion chamber, the smoke generated by combustion is carried out of the combustion chamber through the carrier gas and enters the smoke analyzer 6 to analyze pollutants in the smoke, and the smoke analyzer 6 analyzes CO in the smoke 2 、CO、NO X And SO 2 Four types of conventional pollutants, namely, the flue gas analyzed by the flue gas analyzer 6 enters the tail gas treatment device 7 for treatment and is discharged into the atmosphere.
Therefore, the oil-containing sludge combustion test device provided by the embodiment of the invention can be used for carrying out combustion treatment on the oil-containing sludge samples by changing the combustion time and the combustion temperature of the tubular furnace 5, a plurality of oil-containing sludge samples can be arranged, each oil-containing sludge sample is burnt at different combustion temperatures and combustion times, data are recorded, four types of conventional pollutants of CO2 and CO, NOX, SO2 in flue gas obtained by the oil-containing sludge of each sample under specific combustion temperatures and combustion times are recorded, data analysis and comparison are carried out, so that the optimal combustion time and the optimal combustion temperature of the oil-containing sludge are obtained, and theoretical support is further provided for means adopted for treating the oil-containing sludge in batches.
In some embodiments, the oily sludge combustion test device of the embodiment of the invention further comprises a cooler 8, the cooler 8 is provided with a flue gas inlet 801 and a cooling flue gas outlet 802, the flue gas inlet 801 is communicated with the flue gas outlet 502 of the tube furnace 5, the cooling flue gas outlet 802 is communicated with the flue gas analyzer 6, and the cooler 8 is used for cooling flue gas.
As shown in fig. 1, the flue gas discharged from the flue gas outlet 502 of the tube furnace 5 enters the cooler 8 through the flue gas inlet 801 of the cooler 8, is cooled and then is discharged from the cooling flue gas outlet 802, and the cooled flue gas discharged from the cooling flue gas outlet 802 enters the flue gas analyzer 6 for flue gas analysis. It can be understood that, because the flue gas generated by combustion is high-temperature flue gas, the temperature of the flue gas can be reduced after the flue gas is cooled by the cooler 8, and the damage to the subsequent detecting instrument caused by overhigh temperature of the flue gas is prevented, so that the use safety of the detecting equipment is improved.
In some embodiments, the oily sludge combustion test device of the embodiment of the invention further comprises a dryer 9, the dryer 9 is provided with a cooling flue gas inlet 901 and a drying flue gas outlet 902, the cooling flue gas inlet 901 is communicated with the cooling flue gas outlet 802 of the cooler 8, the drying flue gas outlet 902 is communicated with the flue gas analyzer 6, and the dryer 9 is used for drying flue gas.
As shown in fig. 1, cooled flue gas discharged from a cooling flue gas outlet 802 of a cooler 8 enters a dryer 9 through a cooling flue gas inlet 901 of the dryer 9 to be dried, and the dried flue gas enters a flue gas analyzer 6 through a drying flue gas outlet 902 to be analyzed. It can be understood that, because the cooled flue gas contains a certain amount of moisture, the moisture in the cooled flue gas is dried and absorbed by the dryer 9, so that the moisture in the flue gas is prevented from damaging the subsequent detection instrument, and the use safety of the detection equipment is further improved.
In some embodiments, the mixture outlet 403 of the mixer 4 communicates with the mixture inlet 501 of the tube furnace 5 via a first line 10, the first line 10 being provided with a first control valve 11. The dryer 9 also has a third air inlet 903, and the mixture outlet 403 of the mixer 4 communicates with the third air inlet 903 of the dryer 9 via a second pipe 12, and the second pipe 12 is provided with a second control valve 13.
Specifically, as shown in fig. 1, when the oily sludge sample is placed in the tube furnace 5 and heated to a preset temperature, the first control valve 11 is closed and the second control valve 13 is opened, the mixed gas cannot enter the combustion chamber of the tube furnace 5 to support combustion, so that the oily sludge sample cannot burn, and the mixed gas sequentially flows to the dryer 9, the flue gas analyzer 6 and the tail gas treatment device 7 through the second pipeline to continuously exhaust the gas in the subsequent equipment and pipeline, so that the influence on the accuracy of the test result caused by the change of the gas content in the subsequent equipment and pipeline in the heating process of the tube furnace 5 is avoided. When the temperature in the tube furnace 5 is raised to a preset temperature, the first control valve 11 is opened, the second control valve 13 is closed, and the mixed gas enters the combustion chamber of the tube furnace 5 to support combustion and carry the combusted smoke to the smoke analyzer 6.
In some embodiments, the exhaust treatment device 7 of an embodiment of the present invention includes a housing 701, a reservoir 702, and a spray head 703. The housing 701 is provided with an adsorption cavity 7011, a tail gas inlet 7012 and a clean flue gas outlet 7013, wherein the tail gas inlet 7012 is communicated with the outlet of the flue gas analyzer 6, and an adsorbent is arranged in the adsorption cavity 7011. A liquid storage tank 702 is provided on the housing 701 for storing alkaline liquid (e.g. NaOH, naCO) 3 Waiting for alkali liquor), the spray head 703 is communicated with the liquid storage tank 702 and is arranged in the adsorption cavity 7011, and the spray head 703 is used for spraying alkali liquor into the adsorption cavity 7011.
Specifically, as shown in fig. 1 and fig. 2, the flue gas discharged from the outlet of the flue gas analyzer 6 enters the adsorption cavity 7011 of the housing 701 through the inlet of the tail gas inlet 7012, the alkali liquid sprayed by the spray nozzle 703 absorbs acid gases such as CO2 and CO, NOX, SO2 in the flue gas, and the adsorbent adsorbs harmful substances such as oil and mercury in the flue gas, wherein the adsorbent can be an activated carbon adsorbent, and has a good adsorption effect and low price. The clean flue gas after the acid gas, the oil content, the mercury and other harmful substances in the flue gas are treated is discharged into the atmosphere through the clean flue gas outlet 7013, and when the tail gas treatment device 7 is used, the alkali liquor in the liquid storage tank 702 can be replaced by clean water, and the device is backwashed.
In some embodiments, the exhaust treatment device 7 further comprises a plurality of grids 704, the grids 704 are arranged at intervals along the direction from the exhaust inlet 7012 to the clean flue gas outlet 7013, the grids 704 are provided with a containing cavity and a vent hole communicated with the containing cavity, the adsorbent is arranged in the containing cavity, the spray head 703 is arranged between the exhaust inlet 7012 and the grids 704, and the spray nozzle of the spray head 703 is arranged towards the grids 704.
Specifically, as shown in fig. 2, the flue gas can pass through the grille 704 through the vent holes on the grille 704, and the flue gas can be adsorbed in multiple layers by arranging a plurality of grille 704, so as to improve the adsorption effect on the flue gas. Because the flue gas is in the holding chamber that gets into through the air vent on the grid 704, the alkali lye of the nozzle of shower nozzle 703 can spray on grid 704, when the flue gas is in the holding chamber that gets into through the air vent on the grid 704, can react with the alkali lye that sprays on the grid 704 earlier then get into the holding chamber for it is effectual to adsorb the flue gas.
In some embodiments, as shown in fig. 2, the exhaust treatment device 7 of the embodiment of the present invention further includes a liquid collecting bucket 705, where the liquid collecting bucket 705 is disposed at a bottom end portion of the housing 701 and is located on the grid 704 and the clean flue gas outlet 7013, and the liquid collecting bucket 705 is in communication with the adsorption cavity 7011 for collecting the alkali lye after absorbing the flue gas, and the liquid collecting bucket 705 has a liquid outlet 7051. The alkali liquor adsorbs acid gas in the flue gas and then enters the liquid collecting hopper 705 to be collected, and the liquid outlet 7051 on the liquid collecting hopper 705 is opened to discharge the alkali liquor collected in the liquid collecting hopper 705 so as to facilitate subsequent treatment and utilization.
According to the method for testing the oil-containing sludge combustion, which is provided by the embodiment of the invention, the flow rate of the carrier gas is set to be 40 ml/min-60 ml/min when the oil-containing sludge is combusted in the tubular furnace 5 based on the oil-containing sludge combustion test device in any embodiment. For example, the flow rates of the carrier gases are each set to 40ml/min, 50ml/min or 60ml/min, preferably 50ml/min.
In some embodiments, the firing temperature of the oily sludge in the tube furnace 5 is 775 ℃ to 825 ℃. The burning temperature of the oily sludge in the tube furnace 5 is 775 ℃, 800 ℃ or 825 ℃, preferably 800 ℃.
In some embodiments, the oil-containing sludge is kneaded in the tube furnace 5 for a burning time of 180min to 200min. For example, the burning time of the oily sludge in the tube furnace 5 is 180min, 192min or 200min, preferably 192min.
Specifically, a plurality of samples are set by taking the block-shaped fatlute and the slurry fatlute as examples, the oil-containing sludge combustion test device provided by the embodiment of the invention is adopted for test, the intermediate weight of the block-shaped fatlute sample and the slurry fatlute sample is 5g, the carrier gas speed is set to be 50ml/min, and the burning of the tube furnace 5 is continuously heated to 20 ℃/min, and the combustion equivalent ratio (the weight of the combustion oxidant/the combustion matter) is 1, and the oil-containing sludge combustion test device provided by the embodiment of the invention is adopted for respectively carrying out the combustion at 500 ℃, 600 ℃,700 ℃, 800 ℃ and 900 ℃.
As shown in the following table, the pollutant content was visually represented by the emission factor, which was obtained as (sludge pollutant weight)/(total sludge weight), using the data obtained by the above-mentioned oil-containing sludge combustion test apparatus.
Emission factor (mg/g) -cake sludge
| Temperature (temperature) | CO | NO X | SO 2 |
| 500℃ | 4.04 | 0.10 | 0.13 |
| 600℃ | 8.99 | 0.29 | 1.13 |
| 700℃ | 13.25 | 0.22 | 1.02 |
| 800℃ | 25.57 | 0.07 | 0.25 |
| 900℃ | 28.06 | 0.13 | 0.57 |
Emission factor (mg/g) -slurry sludge
| Temperature (temperature) | CO | NO X | SO 2 |
| 500℃ | 10.19 | 0.24 | 0.22 |
| 600℃ | 17.84 | 0.38 | 1.08 |
| 700℃ | 19.57 | 0.26 | 0.68 |
| 800℃ | 18.14 | 0.16 | 0.27 |
| 900℃ | 18.23 | 0.46 | 1.32 |
As shown in the two tables, the CO emission of the massive oil sludge is increased along with the temperature rise, and NO X The emission is increased and then reduced with the temperature, the emission factors are all smaller than 1, the content is minimum, the emission is highest under the condition of 600 ℃, and the SO is highest 2 The discharge amount reaches the highest under the condition of 500-600 degrees.
The CO emission of the slurry oil sludge is increased and then reduced along with the temperature rise, and the CO emission is highest under the condition of 700 ℃ and is far higher than NO X 、SO 2 And NO X The emission factors are all smaller than 1, and the content is minimum; SO (SO) 2 The discharge amount is the least at 500 degrees and the highest at 900 degrees.
In summary, two kinds of oil sludge with different morphologies pass through the oil-containing sludge combustion test device provided by the embodiment of the invention to detect the pollutant components CO in the sludge-containing combustion flue gas to be the greatest and NO X 、SO 2 The content is low.
Thus, two kinds of oil sludge optimal reaction conditions are determined as follows: the optimal combustion temperature is 775-825 ℃, the optimal combustion time is 180-200 min, CO and NO X 、SO 2 The discharge amount is minimum, and theoretical support is further provided for the means adopted for the subsequent batch treatment of the oily sludge.
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 the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.
Claims (10)
1. An oily sludge combustion test device, characterized by comprising:
a first gas storage tank (1) and a second gas storage tank (2), wherein the first gas storage tank (1) is used for storing carrier gas, and the second gas storage tank (2) is used for storing oxygen;
a flow controller (3), the flow controller (3) having a carrier gas inlet (301), an oxygen inlet (302), a carrier gas outlet (303) and an oxygen outlet (304), the carrier gas inlet (301) being in communication with the first air reservoir (1), the oxygen inlet (302) being in communication with the second air reservoir (2);
a mixer (4), wherein the mixer (4) is provided with a first air inlet (401), a second air inlet (402) and a mixed gas outlet (403), the first air inlet (401) is communicated with the carrier gas outlet (303), the second air inlet (402) is communicated with the oxygen outlet (304), and the mixer (4) uniformly mixes carrier gas and oxygen and then discharges the mixed gas from the mixed gas outlet (403);
a tube furnace (5), the tube furnace (5) having a combustion chamber and a mixture inlet (501) and a flue gas outlet (502) in communication with the combustion chamber, the mixture inlet (501) in communication with the mixture outlet (403);
a flue gas analyzer (6), the flue gas analyzer (6) being in communication with the flue gas outlet (502);
and the tail gas treatment device (7), and the tail gas treatment device (7) is communicated with the flue gas analyzer (6).
2. The oil-containing sludge combustion test device according to claim 1, further comprising a cooler (8), the cooler (8) having a flue gas inlet (801) and a cooling flue gas outlet (502), the flue gas inlet (801) being in communication with the flue gas outlet (502) of the tube furnace (5), the cooling flue gas outlet (502) being in communication with the flue gas analyzer (6), the cooler (8) being for cooling flue gas.
3. The oil-containing sludge combustion test device according to claim 2, further comprising a dryer (9), the dryer (9) having a cooling flue gas inlet (901) and a drying flue gas outlet (902), the cooling flue gas inlet (901) being in communication with the cooling flue gas outlet (502) of the cooler (8), the drying flue gas outlet (902) being in communication with the flue gas analyzer (6), the dryer (9) being for drying flue gas.
4. The oil-containing sludge combustion test device according to claim 3, wherein the mixed gas outlet (403) of the mixer (4) is communicated with the mixed gas inlet (501) of the tube furnace (5) through a first pipeline (10), a first control valve (11) is arranged on the first pipeline (10), the dryer (9) is further provided with a third air inlet, the mixed gas outlet (403) of the mixer (4) is communicated with the third air inlet of the dryer (9) through a second pipeline (12), and a second control valve (13) is arranged on the second pipeline (12).
5. The oil-containing sludge combustion test apparatus as claimed in claim 1, wherein the tail gas treatment apparatus (7) comprises:
the device comprises a shell (701), wherein the shell (701) is provided with an adsorption cavity (7011), and a tail gas inlet (7012) and a clean flue gas outlet (7013) which are communicated with the adsorption cavity (7011), the tail gas inlet (7012) is communicated with the outlet of the flue gas analyzer (6), and an adsorbent is arranged in the adsorption cavity (7011);
liquid storage tank (702) and shower nozzle (703), liquid storage tank (702) are located be used for storing alkali lye on casing (701), shower nozzle (703) with liquid storage tank (702) intercommunication is placed in adsorption cavity (7011), shower nozzle (703) are used for to spray alkali lye in adsorption cavity (7011).
6. The oil-containing sludge combustion test device according to claim 5, wherein the tail gas treatment device (7) further comprises a plurality of grids (704), the grids (704) are arranged at intervals along the direction from the tail gas inlet (7012) to the clean flue gas outlet (7013), the grids (704) are provided with containing cavities and vent holes communicated with the containing cavities, the adsorbent is arranged in the containing cavities, the spray head (703) is arranged between the tail gas inlet (7012) and the grids (704), and the spray nozzle of the spray head (703) is arranged towards the grids (704).
7. The oil-containing sludge combustion test device according to claim 6, wherein the tail gas treatment device (7) further comprises a liquid collecting hopper (705), the liquid collecting hopper (705) is arranged at the bottom end part of the shell (701) and is positioned at the grid (704) and the clean flue gas outlet (7013), the liquid collecting hopper (705) is communicated with the adsorption cavity (7011) and is used for collecting alkali liquor after absorbing flue gas, and the liquid collecting hopper (705) is provided with a liquid outlet (7051).
8. An oily sludge combustion test method based on the oily sludge combustion test device according to any one of claims 1-7, characterized in that the flow rate of the carrier gas is set to 40 ml/min-60 ml/min when the oily sludge is burned in the tube furnace (5).
9. The method according to claim 8, characterized in that the burning temperature of the oily sludge in the tube furnace (5) is 775-825 ℃.
10. The oil-containing sludge combustion test method as claimed in claim 9, characterized in that the combustion time of the oil-containing sludge in the tube furnace (5) is 180min to 200min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311422718.5A CN117538478A (en) | 2023-10-30 | 2023-10-30 | Oil-containing sludge combustion test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311422718.5A CN117538478A (en) | 2023-10-30 | 2023-10-30 | Oil-containing sludge combustion test device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117538478A true CN117538478A (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311422718.5A Pending CN117538478A (en) | 2023-10-30 | 2023-10-30 | Oil-containing sludge combustion test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117538478A (en) |
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2023
- 2023-10-30 CN CN202311422718.5A patent/CN117538478A/en active Pending
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