CN217651155U - Biological desulphurization device - Google Patents
Biological desulphurization device Download PDFInfo
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- CN217651155U CN217651155U CN202221790837.7U CN202221790837U CN217651155U CN 217651155 U CN217651155 U CN 217651155U CN 202221790837 U CN202221790837 U CN 202221790837U CN 217651155 U CN217651155 U CN 217651155U
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Abstract
The utility model discloses a biological desulfurization device, which comprises a scrubbing tower and a reactor, wherein the scrubbing tower comprises an upper section part and a lower section part, the scrubbing tower is provided with a first air inlet, a first liquid inlet and a first exhaust port, and the first air inlet, the first liquid inlet and the first exhaust port are all arranged on the upper section part; the reactor has a second gas inlet, a second gas outlet, and a liquid outlet, the lower section of the scrubbing tower is disposed in the reactor, the lower section is connected to the reactor, and the lower section has a communication port communicating with the scrubbing tower and the reactor. The biological desulphurization device provided by the embodiment of the utility model has the advantages of small occupied area, simple structure, low cost and the like.
Description
Technical Field
The utility model relates to a marsh gas processing apparatus technical field, concretely relates to biological desulphurization unit.
Background
At present, the biogas biological desulfurization process generally adopts a mode that sulfur oxidizing bacteria oxidize hydrogen sulfide into elemental sulfur under an aerobic condition for removal, and the specific process flow is as follows: the biogas containing hydrogen sulphide enters a scrubbing tower where the hydrogen sulphide is absorbed by the scrubbing action of an alkaline solution; the biogas, which contains almost no hydrogen sulphide, escapes from the top of the scrubber tower and the solution containing hydrogen sulphide flows into a bioreactor, where sulphur oxidising bacteria oxidise it to elemental sulphur and alkali under limited oxygen supply conditions; the solution rich in elemental sulfur is subjected to solid-liquid separation through precipitation in a precipitator.
In the related technology, the scrubbing tower, the bioreactor and the precipitator are three independent units, and the scrubbing tower, the bioreactor and the precipitator are connected through pipelines to form a biological desulfurization system, so that the problems of large occupied area, high investment cost, complex process structure and the like exist.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving one of the technical problems in the related art at least to a certain extent.
Therefore, the embodiment of the utility model provides a biological desulphurization device to reduce the area of biological desulphurization device, reduce the cost of biological desulphurization device and simplify the process structure of biological desulphurization device.
The biological desulfurization device comprises a scrubbing tower and a reactor, wherein the scrubbing tower comprises an upper section part and a lower section part, the scrubbing tower is provided with a first air inlet, a first liquid inlet and a first exhaust port, and the first air inlet, the first liquid inlet and the first exhaust port are all arranged on the upper section part; the reactor has a second gas inlet, a second gas outlet, and a liquid outlet, the lower section of the scrubbing tower is disposed within the reactor, the lower section of the scrubbing tower is connected to the reactor, and the lower section of the scrubbing tower has a communication port communicating with the scrubbing tower and the reactor.
The utility model discloses biological desulphurization unit establishes in the reactor through the hypomere part with the scrubbing tower, and the hypomere part of scrubbing tower links to each other with the reactor for scrubbing tower and reactor integration are in same device. Compared with the prior art in which the gas scrubbing tower and the reactor are respectively and independently arranged and communicated through the pipeline, the biological desulfurization device has the advantages that the occupied area of the biological desulfurization device can be reduced, and the complex process structure of the biological desulfurization device can be simplified. In addition, the reduction of the occupied area and the reduction of the pipelines can also reduce the investment cost of the biological desulfurization device. Therefore, the biological desulphurization device provided by the embodiment of the utility model has the advantages of small occupied area, simple structure, low cost and the like.
In some embodiments, the reactor has a reaction chamber, a precipitation chamber, and a communication channel communicating with the reaction chamber and the precipitation chamber, the lower section of the scrubber tower is disposed in the reaction chamber, the second gas inlet and the liquid outlet are both communicated with the reaction chamber, and the reactor further has a sulfur outlet communicating with the precipitation chamber.
In some embodiments, the reaction chamber and the precipitation chamber are arranged in a first horizontal direction.
In some embodiments, the reactor further comprises a second liquid inlet communicated with the precipitation cavity, the second liquid inlet is communicated with the liquid outlet, the second liquid inlet is arranged above the sulfur outlet, and the communication channel is arranged above the second liquid inlet, so that the liquid in the precipitation cavity flows into the reaction cavity through the communication channel.
In some embodiments, the scrubbing tower is disposed offset to one side of the reactor in the first horizontal direction, and the settling chamber is disposed offset to the other side of the reactor in the first horizontal direction.
In some embodiments, the ratio of the cross-sectional area of the settling chamber in the horizontal plane to the cross-sectional area of the reaction chamber in the horizontal plane is 1/9 to 1/7.
In some embodiments, the reactor includes a shell and a partition disposed within the shell, the shell and the partition defining the reaction chamber therebetween, and the shell and the partition defining the precipitation chamber therebetween.
In some embodiments, the partition is spaced apart from the top wall of the housing such that the communication passage is defined between the partition, the top wall of the housing, and the side wall of the housing.
In some embodiments, the first liquid inlet is in communication with the liquid outlet; and/or a first nozzle is arranged on the first liquid inlet; and/or a packing layer is arranged in the upper section part, the first liquid inlet and the first exhaust port are arranged above the packing layer, and the first air inlet is arranged below the packing layer; and/or the reactor further has a feed inlet; and/or an air inlet pipeline communicated with the second air inlet is arranged in the reactor, and a plurality of aeration heads are arranged on the air inlet pipeline.
In some embodiments, the reactor further has a third liquid inlet to spray liquid onto the liquid surface within the reactor.
In some embodiments, a second spray head is arranged on the third liquid inlet; and/or the third liquid inlet is communicated with the liquid outlet.
In some embodiments, the size of the scrubbing tower in the up-down direction is 8m to 20m; and/or the reactor is cylindrical and extends along the vertical direction, and the diameter of the reactor is 2-6 m.
Drawings
Fig. 1 is a front view of a biological desulfurization apparatus according to an embodiment of the present invention.
Fig. 2 is a plan view of the biological desulfurization apparatus according to one embodiment of the present invention (with the top wall of the casing being hidden).
Reference numerals:
a biological desulfurization apparatus 100;
a scrubbing tower 1; an upper section 101; a first air inlet 1011; a first liquid inlet 1012; a first exhaust port 1013; a first spray head 1014; a filler layer 1015; a lower section portion 102; a communication port 1021;
a reactor 2; a reaction chamber 201; a feed inlet 2011; a second air inlet 2012; a second exhaust port 2013; a drain 2014; an aeration head 2015; a third inlet 2017; a second showerhead 2018; a settling chamber 202; a sulfur outlet 2021; a second liquid inlet 2022; a partition 203; a housing 204; a communication passage 205;
a first intake pipe 301; a first inlet pipe 302; a first exhaust pipe 303;
a feed tube 4;
a second intake pipe 501; a second exhaust pipe 502; a drain 503; a second inlet pipe 504; a third liquid inlet pipe 505; an air intake line 506;
a sludge discharge pipe 6.
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 exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 and fig. 2, a biological desulfurization apparatus 100 according to an embodiment of the present invention includes a scrubbing tower 1 and a reactor 2, the scrubbing tower 1 includes an upper section 101 and a lower section 102, the scrubbing tower 1 has a first air inlet 1011, a first liquid inlet 1012, and a first exhaust 1013, and the first air inlet 1011, the first liquid inlet 1012, and the first exhaust 1013 are disposed in the upper section 101. The reactor 2 has a second gas inlet 2012, a second gas outlet 2013, and a liquid outlet 2014, the lower section 102 is provided in the reactor 2, the lower section 102 is connected to the reactor 2, and the lower section 102 has a communication port 1021 communicating with the scrubber tower 1 and the reactor 2.
The utility model discloses when biological desulphurization unit 100 carries out the desulfurization operation, treat that desulfurization gas (for example treat desulfurization marsh gas) gets into in the scrubbing tower 1 through first air inlet 1011, in washing liquid (for example alkaline washing liquid) gets into scrubbing tower 1 through first inlet 1012, treat that desulfurization gas and washing liquid contact reaction form and be rich in sulphur solution and desulfurization gas in scrubbing tower 1. Then, the desulfurization gas is discharged through the first gas outlet 1013; the sulfur-rich solution enters the reactor 2 through the communication port 1021, an oxygen-containing gas (e.g., air) enters the reactor 2 through the second inlet 2012, and the sulfur oxidizing bacteria oxidize the sulfur-rich solution to elemental sulfur and a sulfur-lean solution within the reactor 2 under oxygen-limited conditions. Thereafter, the sulfur-lean solution can be discharged out of the reactor 2 through the drain port 2014, and the off-gas in the reactor 2 is discharged through the second exhaust port 2013.
The second exhaust port 2013 is disposed above the second air inlet 2012, and the liquid outlet 2014 is disposed above the feeding port 2011. The first exhaust port 1013 is disposed above the first liquid inlet 1012, and the first liquid inlet 1012 is disposed above the first gas inlet 1011.
It will be understood by those skilled in the art that, when biological desulfurization apparatus 100 is operated for the first time, a washing liquid with sulfur-oxidizing bacteria can be added to scrubbing tower 1 through first liquid inlet 1012, so that the sulfur-oxidizing bacteria can enter reactor 2 with the washing liquid; alternatively, the reactor 2 may be provided with a feed port 2011, and the sulfur oxidizing bacteria may be added into the reactor 2 through the feed port 2011 when the biological desulfurization apparatus 100 is operated for the first time.
The utility model discloses biological desulphurization unit 100 is through establishing hypomere part 102 in reactor 2, and hypomere part 102 links to each other with reactor 2 for scrubbing tower 1 and reactor 2 integrate in same device. Compared with the prior art in which the scrubbing tower and the reactor are respectively and independently arranged and are communicated with each other through a pipeline, the occupied area of the biological desulfurization device 100 can be reduced, and the process structure of the biological desulfurization device 100 can be simplified. In addition, the reduction of the floor space and the reduction of the piping can also reduce the investment cost of the biological desulfurization apparatus 100.
Therefore, the biological desulfurization device 100 of the embodiment of the present invention has the advantages of small floor space, simple structure, low cost, etc.
Optionally, a communication port 1021 is provided at the bottom of the lower section 102.
Alternatively, the bottom of the lower section 102 is flush with the bottom of the reactor 2. In other words, the bottom of the scrubbing tower 1 is at the same level as the bottom of the reactor 2.
In some embodiments, first inlet 1012 is in communication with drain 2014.
The sulfur-rich solution and the desulfurization gas are formed by contact reaction of the sulfur-poor solution discharged through the liquid discharge port 2014 as a scrubbing liquid with the gas to be desulfurized through the first liquid inlet 1012 by communicating the first liquid inlet 1012 with the liquid discharge port 2014. The washing liquid is recycled, so that the operation cost of the biological desulfurization apparatus 100 can be reduced.
In some embodiments, a first spray head 1014 is disposed on the first liquid inlet 1012.
By arranging the first spray nozzle 1014 on the first liquid inlet 1012, the washing liquid can be contacted with the gas to be desulfurized in a fog or water drop form, so that the contact area of the washing liquid and the gas to be desulfurized can be increased. On the one hand, under the condition of a certain flow rate of the gas to be desulfurized, less washing liquid is used to realize the desulfurization of the gas to be desulfurized, which is beneficial to further reducing the operation cost of the biological desulfurization device 100; on the other hand, under the condition that the flow of the washing liquid is constant, the desulfurization of more gases to be desulfurized can be realized, and the improvement of the desulfurization operation efficiency of the biological desulfurization device 100 is facilitated.
In some embodiments, a packing layer 1015 is disposed in the upper portion 101, the first inlet 1012 and the first outlet 1013 are disposed above the packing layer 1015, and the first inlet 1011 is disposed below the packing layer 1015.
Through set up packing layer 1015 in upper segment part 101, can increase the area of contact of treating desulfurization gas and washing liquid, further reduce biological desulphurization unit 100's running cost, improve biological desulphurization unit 100 desulfurization operating efficiency.
Alternatively, the packing of the packing layer may be pall rings or the like. The height of the packing layer is determined in the up-down direction according to the contact time of the gas to be desulfurized and the washing liquid.
Alternatively, the contact time of the gas to be desulphurized and the washing liquid is between 10s and 50s, the height of the packing layer can be generally between 1.5m and 10m.
In some embodiments, reactor 2 also has a feed inlet 2011.
Through set up charge door 2011 on reactor 2, demineralized water or poor sulphur solution or nutritive salt can be added into reactor 2 through charge door 2011 in to ensure that the growing environment of sulfur oxidizing bacteria is in the best, thereby can improve the reaction rate of being rich in sulphur solution in the reactor 2, be favorable to further improving biological desulphurization unit 100 desulfurization operating efficiency.
In some embodiments, the reactor 2 has a reaction chamber 201, a precipitation chamber 202, and a communication channel 205 communicating with the reaction chamber 201 and the precipitation chamber 202, and the lower section 102 of the scrubber tower is disposed in the reaction chamber 201. The second gas inlet 2012 and the liquid outlet 2014 are both in communication with the reaction chamber 201, and the reactor 2 further has a sulfur outlet 2021 in communication with the precipitation chamber 202.
The utility model discloses when biological desulphurization unit 100 carries out the desulfurization operation, the mixed liquid (including elemental sulfur and poor sulphur solution) that obtains in reactor 2's reaction chamber 201 gets into precipitation chamber 202 through intercommunication passageway 205, and the mixed liquid realizes solid-liquid separation through deposiing in precipitation chamber 202, obtains mud and the supernatant that contains elemental sulfur, and wherein, the supernatant is poor sulphur solution. The precipitated sludge containing elemental sulphur is discharged through the sulphur outlet 2021 and the supernatant may be returned to the reaction chamber 201. Or, the mixed solution (including elemental sulfur and the sulfur-poor solution) obtained in the reaction cavity 201 of the reactor 2 enters the precipitation cavity 202, and the mixed solution is precipitated in the precipitation cavity 202 to realize solid-liquid separation, so as to obtain sludge containing elemental sulfur and a supernatant, wherein the supernatant is the sulfur-poor solution. The precipitated sludge containing elemental sulfur is discharged through the sulfur outlet 2021, and the supernatant liquid can be returned to the reaction chamber 201 through the communication passage 205.
The utility model discloses biological desulphurization unit 100 through set up reaction chamber 201 and sedimentation chamber 202 in reactor 2, utilizes reaction chamber 201 to realize bioreactor's effect, utilizes the effect that sedimentation chamber 202 realized the precipitator for reactor and precipitator integration are in same device. Compared with the prior art in which the reactor and the precipitator are respectively and independently arranged and connected through the pipeline, the occupied area of the biological desulfurization device 100 can be reduced, and the process complexity and the structure of the biological desulfurization device 100 can be simplified. In addition, the reduction of the floor space and the reduction of the piping can also reduce the investment cost of the biological desulfurization apparatus 100.
Optionally, the reaction chamber 201 and the precipitation chamber 202 are arranged in a first horizontal direction.
For example, the reaction chamber 201 and the precipitation chamber 202 are arranged in the left-right direction.
Optionally, the reactor 2 further has a second liquid inlet 2022 communicated with the precipitation chamber 202, the second liquid inlet 2022 is communicated with the liquid outlet 2014, the second liquid inlet 2022 is disposed above the sulfur outlet 2021, and the communication channel is disposed above the second liquid inlet 2022, so that the liquid in the precipitation chamber 202 flows into the reaction chamber 201 through the communication channel 205.
The utility model discloses when biological desulphurization unit 100 carries out the desulfurization operation, the mixed liquid (including elemental sulfur and poor sulphur solution) that obtains in the reaction chamber 201 of reactor 2 gets into precipitation chamber 202 through leakage fluid dram 2014 and second inlet 2022 and realizes solid-liquid separation. The supernatant is returned to the reaction chamber 201 through the communication passage 205.
Optionally, the second liquid inlet 2022 is in fluid communication with the drain 2014 via a lean liquid pump.
Alternatively, the scrubbing tower 1 is disposed biased toward one side of the reactor 2 in the first horizontal direction, and the settling chamber 202 is disposed biased toward the other side of the reactor 2 in the first horizontal direction.
For example, as shown in fig. 1 and 2, the scrubbing tower 1 is disposed toward the left side of the reactor 2, and the settling chamber 202 is disposed toward the right side of the reactor 2.
By arranging the scrubbing tower 1 and the precipitation chamber 202 to be deviated to different sides of the reactor 2, the scrubbing tower, the reactor and the precipitator can be integrated into a whole conveniently, short flow can be reduced, better mixing in the reactor 2 is ensured, and the design and manufacture of the biological desulfurization device 100 are facilitated.
Optionally, the ratio of the cross-sectional area of the settling chamber 202 in the horizontal plane to the cross-sectional area of the reaction chamber 201 in the horizontal plane is 1/9 to 1/7. In other words, the ratio of the sectional area of the settling chamber 202 in the horizontal plane to the sectional area of the reactor 2 in the horizontal plane is 1/10 to 1/8.
The ratio of the sectional area of the settling chamber 202 on the horizontal plane to the sectional area of the reaction chamber 201 on the horizontal plane is set to 1/9 to 1/7, so that the reaction chamber 201 and the settling chamber 202 are better matched, for example, the mixed liquid obtained from the reaction chamber 201 can just realize solid-liquid separation through the settling chamber 202. It is advantageous to improve the desulfurization operation efficiency of the biological desulfurization apparatus 100.
Alternatively, the reactor 2 comprises a shell 204 and a partition 203, the partition 203 being disposed in the shell 204, a reaction chamber 201 being defined between a portion of the shell 204 and the partition 203, and a settling chamber 202 being defined between another portion of the shell 204 and the partition 203.
The partition plate 203 is arranged in the shell 204 of the reactor 2, so that the reaction cavity 201 and the precipitation cavity 202 are conveniently formed in the reactor 2, and the design, the manufacture and the process of the biological desulfurization device 100 are conveniently realized.
Alternatively, as shown in fig. 1, the partition 203 is disposed apart from the top wall of the housing 204 so that the communication passage 205 is defined between the partition 203, the top wall of the housing 204, and the side wall of the housing 204.
The arrangement of the partition plate 203 facilitates the formation of the communication channel 205, and further facilitates the design and manufacture of the biological desulfurization apparatus 100 and the realization of the process.
Alternatively, the baffle 203 may be a straight plate or an arcuate plate (as shown in FIG. 2).
The upper end of the partition 203 is located 0.3m to 1m below the liquid surface.
In some embodiments, a gas inlet line 506 is disposed in the reactor 2 and is in communication with the second gas inlet 2012, and a plurality of aeration heads 2015 are disposed on the gas inlet line.
As shown in fig. 2, there are two second air inlets 2012, and there are two sets of air inlet pipelines 506, where the two sets of air inlet pipelines 506 correspond to the two second air inlets 2012 one by one, and each set of air inlet pipelines 506 is communicated with the corresponding second air inlet 2012. Each set of air inlet pipe 506 is provided with a plurality of aeration heads 2015, and each aeration head 2015 is arranged in the reaction cavity 201.
Through setting up a plurality of aeration heads 2015, not only can make oxygen in the oxygen-containing gas fully contact with rich sulphur solution, can play the effect of stirring rich sulphur solution moreover, be favorable to further improving biological desulphurization unit 100 desulfurization operating efficiency.
Alternatively, a plurality of aeration heads 2015 are arranged around the circumference of the scrubbing tower 1.
Optionally, the service area of the aeration head 2015 is about 0.2m 2 -1m 2 。
In some embodiments, the reactor 2 also has a third liquid inlet 2017 to spray liquid to the liquid level in the reactor 2.
It will be appreciated that bubbles are easily generated on the surface of the reactor 2 because oxygen-containing gas needs to be fed to the sulfur-rich solution in the reactor 2. Liquid (spraying liquid) is sprayed to the liquid level in the reactor 2 through the third liquid inlet 2017, so that the bubbles are broken under the action of the impact force of the spraying liquid, and the defoaming effect is achieved.
Optionally, a second nozzle 2018 is disposed on the third liquid inlet 2017.
Through set up second shower nozzle 2018 on third inlet 2017, can be so that spray liquid with a plurality of water droplet form drippage on the liquid level in reactor 2, utilize a plurality of water droplets to break through more bubbles, be favorable to improving defoaming effect and further reduce biological desulphurization unit 100's running cost.
Optionally, the third inlet 2017 communicates with the drain 2014.
Through communicating the third liquid inlet 2017 with the liquid outlet 2014, the poor sulfur-containing solution discharged through the liquid outlet 2014 is used as spraying liquid for spraying the liquid surface in the reactor 2, so that the washing liquid is recycled, and the operation cost of the biological desulfurization device 100 can be further reduced.
Optionally, the flow rate of the gas to be desulfurized is less than or equal to 1000m 3 /h。
Among them, the diameter of the scrubbing tower 1 may be determined according to the flow rate of the gas to be desulfurized.
Alternatively, the flow rate of the gas to be desulphurized is between 0.1m/s and 0.5m/s.
Alternatively, the height of the scrubbing tower 1 is 8m to 20m. In other words, the size of the scrubbing tower 1 in the vertical direction is 8m to 20m.
Alternatively, the reactor 2 is cylindrical extending in the up-down direction, and the diameter of the reactor 2 is 2m to 6m.
Of course, in other embodiments, the reactor 2 may have other regular or irregular shapes such as a cube.
Optionally, the biological desulfurization apparatus 100 further includes a first gas inlet pipe 301 communicated with the first gas inlet 1011, a first liquid inlet pipe 302 communicated with the first liquid inlet 1012, and a first gas outlet pipe 303 communicated with the first gas outlet 1013.
When the biological desulfurization device 100 of the embodiment of the present invention performs desulfurization operation, the gas to be desulfurized sequentially passes through the first gas inlet pipe 301 and the first gas inlet 1011 to enter the scrubbing tower 1; the washing liquid enters the scrubbing tower 1 through the first liquid inlet pipe 302 and the first liquid inlet 1012 in sequence; the desulfurization gas is discharged out of the scrubbing tower 1 through the first exhaust port 1013 and the first exhaust pipe 303 in this order.
Optionally, the biological desulfurization apparatus 100 further comprises a second air inlet pipe 501 communicated with the second air inlet 2012, a second air outlet pipe 502 communicated with the second air outlet 2013, a liquid outlet pipe 503 communicated with the liquid outlet 2014, a second liquid inlet pipe 504 communicated with the second liquid inlet 2022, and a third liquid inlet pipe 505 communicated with the third liquid inlet 2017. The drain pipe 503 is connected to the first liquid inlet pipe 302, the second liquid inlet pipe 504, and the third liquid inlet pipe 505.
When the biological desulfurization device 100 of the embodiment of the present invention performs desulfurization operation, oxygen-containing gas enters the reaction chamber 201 through the second gas inlet pipe 501 and the second gas inlet 2012; the exhaust gas in the reactor 2 is discharged out of the reactor 2 through the second exhaust port 2013 and the second exhaust pipe 502; a part of the mixed liquid obtained in the reaction chamber 201 enters the precipitation chamber 202 through the liquid outlet 2014 and the second liquid inlet 2022; a part of the mixed liquid obtained in the reaction chamber 201 is sprayed to the liquid level in the reactor 2 through the third liquid inlet pipe 505 and the third liquid inlet 2017; another part of the mixed liquid obtained in the reaction chamber 201 is introduced into the scrubbing tower 1 as a scrubbing liquid through the first liquid inlet pipe 302 and the first liquid inlet 1012.
Optionally, the biological desulfurization apparatus 100 further includes a feed pipe 4 communicating with the feed port 2011 and a sludge discharge pipe 6 communicating with the sulfur outlet 2021.
Thus, demineralized water or sulfur-depleted solution or nutrient salts can be added into the reactor 2 via the feed line 4 and the feed opening 2011; the precipitated sludge containing elemental sulphur is discharged through the sulphur outlet 2021 and the sludge discharge pipe 6.
Optionally, the oxygen-containing gas enters the second inlet pipe 501 through a fan, and the sludge containing elemental sulfur is discharged out of the sedimentation chamber 202 through a sludge pump.
The desulfurization operation of the biological desulfurization apparatus 100 according to the embodiment of the present invention is described in detail below with reference to fig. 1 and 2:
the gas to be desulfurized enters the scrubbing tower 1 through the first gas inlet 1011 at the middle part of the scrubbing tower 1 and then flows upwards, the scrubbing liquid is sprayed into the scrubbing tower 1 through the first liquid inlet 1012 at the upper part of the scrubbing tower 1, the gas to be desulfurized flowing upwards is contacted with the scrubbing liquid sprayed downwards, and the hydrogen sulfide in the gas to be desulfurized is absorbed into the scrubbing liquid, so that the following reaction occurs:
H 2 S+OH - →HS - +H 2 O，
a desulfurized gas is obtained which leaves scrubbing tower 1 through first vent 1013 at the top of scrubbing tower 1 to enter a subsequent utilization facility.
The spray liquid having absorbed the hydrogen sulfide becomes a rich liquid (sulfur-rich solution) having a high content of hydrogen sulfide and flows down to the bottom of the scrubbing tower 1, and the sulfur-rich solution enters the bottom of the reactor 2 through a communication port 1021 in the bottom. After the sulfur-rich solution enters reactor 2, the sulfur oxidizing bacteria oxidize the sulfur to elemental sulfur under aerobic conditions, as follows:
HS - +1/2O 2 →S 0 +OH - ，
a lean solution (lean sulfurous solution) with a very low content of hydrogen sulfide is obtained, the concentration of sulfide in the lean sulfurous solution being generally less than 10mg/l. The sulfur-containing lean solution is pumped out of the reactor 2 through a lean solution pump from a liquid discharge port 2014, a part of the sulfur-containing lean solution enters the scrubbing tower 1 through a first liquid inlet 1012, and a part of the sulfur-containing lean solution enters the settling chamber 202 through a second liquid inlet 2022 for solid-liquid separation.
Softened water or a sulfur-depleted solution or nutrient salts may be added to reaction chamber 201 through feed inlet 2011 as necessary to ensure an optimal environment for growth of sulfur oxidizing bacteria.
If necessary, the third liquid inlet 2017 at the top of the reactor 2 may spray the sulfur-poor solution or clean water for defoaming. The offgas at the top of the reactor 2 is discharged out of the biological desulfurization device 100 through the second exhaust port 2013.
The sulfur-poor solution discharged to the precipitation cavity 202 by the lean solution pump is kept still in the precipitation cavity 202 for solid-liquid separation, the supernatant flows into the reaction cavity 201 of the reactor 2 through the communicating channel 205, and the precipitated sulfur-containing sludge is discharged out of the biological desulfurization device 100 through the sulfur outlet 2021.
Optionally, the biological desulfurization apparatus 100 is made of PP/PE, and is corrosion resistant.
The utility model discloses biological desulphurization unit 100, with scrubbing tower, bioreactor, precipitator trinity, the design is exquisite, and process flow simplifies and reasonable, saves area and manufacturing cost when reaching the desulfurization effect, has solved the marsh gas desulfurization, especially little flow marsh gas desulfurization project technology complicacy, area is big, the high pain point of investment cost.
In the description of the present invention, it is to 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", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is understood that they are exemplary and not intended to limit the invention, and that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the scope of the invention.
Claims (12)
1. A biological desulfurization apparatus, characterized by comprising:
a scrubbing tower comprising an upper section and a lower section, the scrubbing tower having a first gas inlet, a first liquid inlet, and a first exhaust, the first gas inlet, the first liquid inlet, and the first exhaust all being disposed in the upper section; and
a reactor having a second gas inlet, a second gas outlet, and a liquid outlet, the lower section of the scrubbing tower being disposed within the reactor, the lower section of the scrubbing tower being connected to the reactor, the lower section of the scrubbing tower having a communication port communicating with the scrubbing tower and the reactor.
2. The biological desulfurization apparatus according to claim 1, wherein the reactor has a reaction chamber, a precipitation chamber, and a communication passage communicating with the reaction chamber and the precipitation chamber, the lower section of the scrubber tower is disposed in the reaction chamber, the second gas inlet and the liquid outlet are both communicated with the reaction chamber, and the reactor further has a sulfur outlet communicating with the precipitation chamber.
3. The biological desulfurization device of claim 2, wherein the reaction chamber and the precipitation chamber are arranged in a first horizontal direction.
4. The biological desulfurization device of claim 3, wherein the reactor further comprises a second liquid inlet communicated with the precipitation chamber, the second liquid inlet is communicated with the liquid outlet, the second liquid inlet is arranged above the sulfur outlet, and the communication channel is arranged above the second liquid inlet, so that the liquid in the precipitation chamber can flow into the reaction chamber through the communication channel.
5. The biological desulfurization apparatus according to claim 3, wherein the scrubbing tower is disposed to be biased toward one side of the reactor in the first horizontal direction, and the settling chamber is disposed to be biased toward the other side of the reactor in the first horizontal direction.
6. The biological desulfurization apparatus according to claim 3, wherein a ratio of a sectional area of the settling chamber in a horizontal plane to a sectional area of the reaction chamber in a horizontal plane is 1/9 to 1/7.
7. The biological desulfurization apparatus according to any one of claims 3 to 6, wherein the reactor comprises a housing and a partition provided in the housing, the partition defining the reaction chamber between a portion of the housing and the partition, and the settling chamber between another portion of the housing and the partition.
8. The biological desulfurization apparatus according to claim 7, wherein the partition is disposed in spaced relation to the top wall of the housing such that the communication passage is defined between the partition, the top wall of the housing, and the side wall of the housing.
9. The biological desulfurization apparatus according to any one of claims 1 to 6, wherein the first liquid inlet is communicated with the liquid discharge port; and/or
A first nozzle is arranged on the first liquid inlet; and/or
A packing layer is arranged in the upper section part, the first liquid inlet and the first exhaust port are arranged above the packing layer, and the first air inlet is arranged below the packing layer; and/or
The reactor is also provided with a feed inlet; and/or
An air inlet pipeline communicated with the second air inlet is arranged in the reactor, and a plurality of aeration heads are arranged on the air inlet pipeline.
10. The biological desulfurization apparatus according to any one of claims 1 to 6, wherein the reactor further has a third liquid inlet to spray liquid to a liquid surface in the reactor.
11. The biological desulfurization device of claim 10, wherein a second spray head is disposed on the third liquid inlet; and/or
The third liquid inlet is communicated with the liquid outlet.
12. The biological desulfurization apparatus according to any one of claims 1 to 6, wherein the dimension of the scrubbing tower in the up-down direction is 8m to 20m; and/or
The reactor is cylindrical and extends along the vertical direction, and the diameter of the reactor is 2-6 m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221790837.7U CN217651155U (en) | 2022-07-12 | 2022-07-12 | Biological desulphurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790837.7U CN217651155U (en) | 2022-07-12 | 2022-07-12 | Biological desulphurization device |
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| CN202221790837.7U Active CN217651155U (en) | 2022-07-12 | 2022-07-12 | Biological desulphurization device |
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