CN211283931U - Purifier of OMC desulfurization waste liquid - Google Patents
Purifier of OMC desulfurization waste liquid Download PDFInfo
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- CN211283931U CN211283931U CN201922115010.0U CN201922115010U CN211283931U CN 211283931 U CN211283931 U CN 211283931U CN 201922115010 U CN201922115010 U CN 201922115010U CN 211283931 U CN211283931 U CN 211283931U
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Abstract
The embodiment of the utility model provides a purifier of OMC desulfurization waste liquid, include: pump (10), first order ceramic filter (1), second grade absorption catalytic filter (2), third level ceramic filter (3) and fourth level ceramic filter (4), pump (10) pass through the tube coupling in first order ceramic filter (1), second grade absorption catalytic filter (2), third level ceramic filter (3) and fourth level ceramic filter (4) loop through the pipeline and link to each other. Through the four-stage filter, suspended matters, desulfurization catalysts and oils in the OMC desulfurization waste liquid can be physically adsorbed, and the content of the suspended matters, the desulfurization catalysts and the oils is reduced.
Description
Technical Field
The utility model relates to a desulfurization waste liquid purifies the field, concretely relates to purifier of OMC desulfurization waste liquid.
Background
In the process of OMC desulfurization (wet desulfurization), the salt content of the desulfurization solution is gradually increased, and the accumulation of components such as thiocyanate, thiosulfate, sulfate and the like can influence the desulfurization effect of the desulfurization solution, so that part of the desulfurization solution can be periodically discharged to become OMC desulfurization waste liquid, and the part of the OMC desulfurization waste liquid is sent to sintering for ore blending.
In implementing the present invention, the applicant has found that there are at least the following problems in the prior art:
the discharged OMC desulfurization waste liquid contains a large amount of suspended sulfur, desulfurization catalysts and other substances, and the substances can cause the emission of sulfur dioxide and the like in sintering tail gas to exceed standards.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a purifier of OMC desulfurization waste liquid through the level four filter, can physical adsorption OMC desulfurization waste liquid in suspended solid, desulfurization catalyst and oils, reduced the content of suspended solid, desulfurization catalyst and oils.
In order to achieve the above object, an embodiment of the present invention provides a purification device for OMC desulfurization waste liquid, including: the device comprises a pump, a first-stage ceramic filter, a second-stage adsorption catalytic filter, a third-stage ceramic filter and a fourth-stage ceramic filter, wherein the pump is connected to the first-stage ceramic filter through a pipeline, and the first-stage ceramic filter, the second-stage adsorption catalytic filter, the third-stage ceramic filter (3) and the fourth-stage ceramic filter are sequentially connected through a pipeline;
the first stage ceramic filter has a first inlet and a first outlet, the pump line being connected to the first inlet; the first-stage ceramic filter comprises a porous filter material, the porous filter material is positioned in the first-stage ceramic filter and is positioned between the first inlet and the first outlet, the porous filter material comprises a first ceramic membrane and a porous ceramic filter device, the porous ceramic filter device and the first ceramic membrane are arranged in a vertically communicated manner, and the porous ceramic filter device is arranged on the first ceramic membrane;
the second-stage adsorption catalytic filter is provided with a second inlet and a second outlet, and the second inlet pipeline is connected with the first outlet; the second stage adsorption catalytic filter comprises a first active material, the first active material is inside the second stage adsorption catalytic filter, and the first active material is located between the second inlet and the second outlet;
the third stage ceramic filter has a third inlet and a third outlet, the third inlet line being connected to the second outlet; the third stage ceramic filter includes a second active material, the second active material being internal to the third stage ceramic filter, the second active material being located between the third inlet and the third outlet;
the fourth stage ceramic filter has a fourth inlet and a fourth outlet, the fourth inlet being connected to the third outlet; the fourth stage ceramic filter comprises a second ceramic membrane, the second ceramic membrane is disposed inside the fourth stage ceramic filter, and the second ceramic membrane is located between the fourth inlet and the fourth outlet.
Preferably, the first inlet is located at the top of the first stage ceramic filter, and the first outlet is located at the bottom of the first stage ceramic filter;
the second inlet is positioned at the top of the second stage adsorption catalytic filter, and the second outlet is positioned at the bottom of the second stage adsorption catalytic filter;
the third inlet is positioned at the top of the third stage ceramic filter, and the third outlet is positioned at the bottom of the third stage ceramic filter;
the fourth inlet is located at the bottom of the fourth ceramic filter and the fourth outlet is located at the top of the fourth ceramic filter.
Preferably, the porous ceramic filter device comprises a porous ceramic, the porous ceramic is located between the first outlet and the first ceramic membrane, and the porous ceramic is communicated with the first ceramic membrane, and the porosity of the porous ceramic is 39%.
Preferably, the first ceramic membrane has a porosity of 35% and a pore size in the range of: 0.5 to 2 μm.
Preferably, corundum ceramics for supporting the first active material is arranged below the first active material, the corundum ceramics is communicated with the first active material, the corundum ceramics is provided with a channel from top to bottom, and the channel of the corundum ceramics is communicated with the first active material.
Preferably, the channel of the corundum ceramic is a plurality of filter tubes, and the gaps between two adjacent filter tubes are different.
Preferably, the nominal diameter of the pipelines connected among the pump, the first stage ceramic filter, the second stage adsorption catalytic filter, the third stage ceramic filter and the fourth stage ceramic filter is 65mm, and the material is 304 stainless steel.
Preferably, electric shut-off valves are arranged among the first-stage ceramic filter, the second-stage adsorption catalytic filter, the third-stage ceramic filter and the fourth-stage ceramic filter.
Preferably, the device also comprises a control valve and a reclaimed water supply pipeline used for cleaning the first-stage ceramic filter, the second-stage adsorption catalytic filter, the third-stage ceramic filter and the fourth-stage ceramic filter, wherein the reclaimed water supply pipeline is connected with the pump, and the control valve is arranged on the reclaimed water supply pipeline.
Preferably, the steam generator further comprises an electric valve and a steam generating device for cleaning the first-stage ceramic filter, the second-stage adsorption catalytic filter, the third-stage ceramic filter and the fourth-stage ceramic filter, wherein the steam generating device is connected to the pump through a pipeline, and the electric valve is arranged on the steam generating device.
The technical scheme has the following beneficial effects: OMC desulfurization waste liquid flows through porous ceramic filter equipment and flows through first ceramic membrane, utilize the porous absorption of porous ceramic filter equipment and first ceramic membrane and can adsorb the characteristic of large granule, they can adsorb a large amount of suspended solid of large granule, because the diameter of suspended sulfur is big than the diameter of catalyst, so porous ceramic filter equipment and first ceramic membrane mainly use the impurity of adsorbing suspended sulfur and other great diameters to be the main, also can adsorb a small amount of desulfurization catalyst (desulfurization catalyst is blue), can also adsorb oils simultaneously. After the porous filter material adsorbs suspended particulate matters and oils in the waste liquid, the OMC desulfurization waste liquid is discharged through a first outlet of the first-stage ceramic filter to form first purified liquid.
The first purifying liquid enters the second-stage adsorption catalytic filter through a second inlet of the second-stage adsorption catalytic filter, so that the first purifying liquid flows through the first active material, the first active material is used for further adsorbing suspended particulate matters (mainly suspended sulfur and other impurities) in the waste liquid and a small amount of desulfurization catalyst and oil, and the first active material can be activated carbon. The first purifying liquid flowing out of the first active material is discharged through a second outlet of the second-stage adsorption catalytic filter to form a second purifying liquid. In the second purified liquid, the content of suspended matters is greatly reduced.
In the third stage ceramic filter, the second active material may be activated carbon, which is porous and capable of adsorbing particulates. Therefore, the second active material adsorbs a large amount of desulfurization catalyst, a small amount of suspended flow and other impurities, and also oil in the second purified liquid, and the second purified liquid is discharged through the third outlet of the third-stage ceramic filter after passing through the second active material.
In the fourth-stage ceramic filter, the third purifying liquid flows through the second ceramic membrane, the second ceramic membrane can further adsorb suspended particles, desulfurization catalysts and oils in the third purifying liquid, and the third purifying liquid adsorbing the suspended particles, the desulfurization catalysts and the oils through the second ceramic membrane is discharged through the fourth outlet to form fourth purifying liquid. And suspended particles, a desulfurization catalyst and oils in the third purified liquid are adsorbed through pores of the second ceramic membrane, so that the adsorption quantity of the suspended particles, the catalyst and the oils in the waste liquid is further improved, and the contents of suspended sulfur, the desulfurization catalyst, other particle impurities and the oils in the OMC desulfurization waste liquid are reduced.
The fourth purified liquid contains very little suspended sulfur, desulfurization catalyst and oil, and does not block a conveying pipeline of the OMC desulfurization waste liquid; and when the powder is sintered for ore blending, gases such as sulfur dioxide, hydrogen sulfide and the like generated by sintering can be greatly reduced, the emission of the sulfur dioxide and the hydrogen sulfide meets the emission standard, and the environment is not polluted. In addition, the sintered ore contains less sulfur and less sulfur-containing catalyst, and the sintered ore has very good quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for purifying an OMC desulfurization waste liquid according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another purification device for OMC desulfurization waste liquid in the embodiment of the present invention.
The reference numerals are represented as:
1. a first stage ceramic filter; 2. a second stage adsorption catalytic filter; 3. a third stage ceramic filter; 4. a fourth stage ceramic filter; 10. a pump; 11. a first inlet; 12. a first outlet; 31. a third inlet; 32. a third outlet; 21. A second inlet; 22. a second outlet; 41. a fourth inlet; 42. a fourth outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a purification apparatus for OMC desulfurization waste liquid includes: the device comprises a pump 10, a first-stage ceramic filter 1, a second-stage adsorption catalytic filter 2, a third-stage ceramic filter 3 and a fourth-stage ceramic filter 4, wherein the pump 10 is connected to the first-stage ceramic filter 1 through a pipeline, and the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3 and the fourth-stage ceramic filter 4 are sequentially connected through pipelines; adopt the utility model discloses a purifier of OMC desulfurization waste liquid carries OMC desulfurization waste liquid through pump 10, and first order ceramic filter 1 to fourth level ceramic filter 4 in proper order can filter and purify suspended solid (including suspension sulphur and other granular impurities), catalyst and oils in adopting the produced desulfurization waste liquid of OMC desulfurization (wet flue gas desulfurization).
The first stage ceramic filter 1 is provided with a first inlet 11 and a first outlet 12, and the pump 10 is connected with the first inlet 11 in a pipeline way; first order ceramic filter 1 includes the porous filter material, the porous filter material is in inside first order ceramic filter 1, just the porous filter material is located first entry 11 with between first export 12, the porous filter material includes first ceramic membrane and porous ceramic filter equipment, porous ceramic filter equipment with first ceramic membrane intercommunication sets up from top to bottom, porous ceramic filter equipment locates on the first ceramic membrane. Specifically, OMC desulfurization waste liquid is conveyed to the direction of a first-stage ceramic filter 1 from a desulfurization waste liquid tank through a total liquid inlet valve group M1 and a liquid inlet valve group 2w by a pump 10, so that the OMC desulfurization waste liquid enters the first-stage ceramic filter 1 through a first inlet 11, the OMC desulfurization waste liquid is input into a porous filter material in the first-stage ceramic filter 1 through the first inlet 11, the OMC desulfurization waste liquid flows through a porous ceramic filter device and a first ceramic membrane, and the porous ceramic filter device and the first ceramic membrane can adsorb large-particle suspended matters and can adsorb a large amount of large-particle suspended matters due to the fact that the diameter of suspended sulfur is larger than that of a catalyst, so that the porous ceramic filter device and the first ceramic membrane mainly adsorb the suspended sulfur and other impurities with larger diameters and also adsorb a small amount of desulfurization catalyst (the desulfurization catalyst is blue), and can adsorb oil. After the porous filter material adsorbs suspended particulate matters and oils in the waste liquid, the OMC desulfurization waste liquid is discharged through a first outlet 12 of the first-stage ceramic filter 1 to form a first purified liquid. By adsorption of the porous ceramic filter means and the first ceramic membrane, a large amount of suspended matter and a small amount of catalyst are intercepted, together with oils.
The second-stage adsorption catalytic filter 2 is provided with a second inlet 21 and a second outlet 22, and the second inlet 21 is connected with the first outlet 12 in a pipeline way; the second stage adsorption catalytic filter 2 comprises a first active material inside the second stage adsorption catalytic filter 2 and located between the second inlet 21 and the second outlet 22. First scavenging solution passes through feed liquor valves 6x and carries to second level adsorption catalysis filter 2, and first scavenging solution enters into second level adsorption catalysis filter 2 through second entry 21 of second level adsorption catalysis filter 2 in, makes first scavenging solution flow through first active material, and first active material is arranged in further adsorbing the suspended particles (mainly for suspended sulfur, other impurity in addition) and a small amount of desulfurization catalyst and oils in the waste liquid, and first active material can be active carbon. The first purified liquid flowing out of the first active material is discharged through the second outlet 22 of the second-stage adsorption catalytic filter 2 to form a second purified liquid. In the second purified liquid, the content of suspended matters is greatly reduced.
The third stage ceramic filter 3 is provided with a third inlet 31 and a third outlet 32, and the third inlet 31 is connected to the second outlet 22 in a pipeline way; the third stage ceramic filter 3 comprises a second active material, which is inside the third stage ceramic filter 3, which is located between the third inlet 31 and the third outlet 32. Specifically, the second purification liquid is delivered to the third-stage ceramic filter 3 through the liquid inlet valve group 7y, and then enters the third-stage ceramic filter 3 through the third inlet 31 of the third-stage ceramic filter 3, and the second active material may be activated carbon, which is porous and can adsorb particles. The second active material adsorbs a large amount of desulfurization catalyst, a small amount of suspended flow and other impurities, and also oils in the second purified liquid, which passes through the second active material and is discharged through the third outlet 32 of the third-stage ceramic filter 3.
Said fourth stage ceramic filter 4 having a fourth inlet 41 and a fourth outlet 42, said fourth inlet 41 being connected to said third outlet 32; the fourth stage ceramic filter 4 comprises a second ceramic membrane disposed within the fourth stage ceramic filter 4 between the fourth inlet 41 and the fourth outlet 42. And (3) conveying the third purifying liquid to a fourth-stage ceramic filter 4 through a liquid inlet valve group 11z, wherein the third purifying liquid flows through a second ceramic membrane, the second ceramic membrane can further adsorb suspended particles, desulfurization catalysts and oils in the third purifying liquid, and the third purifying liquid adsorbing the suspended particles, the desulfurization catalysts and the oils through the second ceramic membrane is discharged through a fourth outlet 42 to form fourth purifying liquid. And suspended particles, a desulfurization catalyst and oils in the third purified liquid are adsorbed through pores of the second ceramic membrane, so that the adsorption quantity of the suspended particles, the catalyst and the oils in the waste liquid is further improved, and the contents of suspended sulfur, the desulfurization catalyst, other particle impurities and the oils in the OMC desulfurization waste liquid are reduced.
The fourth purified liquid contains very little suspended sulfur, desulfurization catalyst and oil, and does not block a conveying pipeline of the OMC desulfurization waste liquid; and when the powder is sintered for ore blending, gases such as sulfur dioxide, hydrogen sulfide and the like generated by sintering can be greatly reduced, the emission of the sulfur dioxide and the hydrogen sulfide meets the emission standard, and the environment is not polluted. In addition, the sintered ore contains less sulfur and less sulfur-containing catalyst, and the sintered ore has very good quality.
To sum up, through the four times of adsorption filtration on the OMC desulfurization waste liquid, a large amount of suspended matters (mainly suspended sulfur and other impurities) and a large amount of desulfurization catalysts are filtered. The pipeline blockage in the desulfurization waste liquid conveying process is avoided.
When the fourth purifying liquid is sent to sintering for ore blending, because the content of suspended sulfur in the fourth purifying liquid is greatly reduced, gases such as sulfur dioxide, hydrogen sulfide and the like generated by sintering can be greatly reduced, and the sulfur dioxide and the hydrogen sulfide accord with emission standards
In addition, in this device, all adopt the physical operation to cleaing away and to desulfurization catalyst of suspended solid, avoid adopting chemical agent, the new waste that can not produce, the feature of environmental protection is high, is convenient for adopt the enterprise of OMC desulfurization to duplicate and use, and economic value is high.
Preferably, the first inlet 11 is located at the top of the first stage ceramic filter 1, and the first outlet 12 is located at the bottom of the first stage ceramic filter 1. The porous ceramic filtering device and the first ceramic membrane are communicated up and down, the porous ceramic filtering device is arranged on the first ceramic membrane, and OMC desulfurization waste liquid flows through the porous ceramic filtering device and the first ceramic membrane from top to bottom in sequence. The OMC desulfurization waste liquid flows through the porous ceramic filtering device and the first ceramic membrane from top to bottom in sequence, namely the OMC desulfurization waste liquid firstly passes through the porous ceramic filtering device and then flows through the first ceramic membrane. The OMC desulfurization waste liquid vertically flows through each filter material from top to bottom, so that the OMC desulfurization waste liquid can be fully contacted with each filter material, the adsorption capacity of the filter material is fully utilized, the adsorption quantity of the filter material on suspended sulfur, impurities, desulfurization catalysts, oil and other particulate matters is increased, and the purification efficiency of the OMC desulfurization waste liquid is improved. By the adsorption of the porous ceramic filter device and the first ceramic membrane, a large amount of suspended matter and a small amount of catalyst are intercepted, and simultaneously, the oil exists, so that the content of suspended matter in the first purified liquid is greatly reduced. The content of suspended matters can be reduced to be below 800mg/L (namely less than or equal to 800mg/L), and the chroma is reduced to be below 3500 degrees (namely less than or equal to 3500 degrees).
In the second stage adsorption catalytic filter 2, the second inlet 21 is positioned at the top of the second stage adsorption catalytic filter 2, and the second outlet 22 is positioned at the bottom of the second stage adsorption catalytic filter 2; the first purifying liquid is input above the first active material, and flows through the first active material vertically from top to bottom, so that the first purifying liquid can be in full contact with the first active material, the adsorption capacity of the first active material is fully utilized, the adsorption quantity of the first active material on suspended sulfur, desulfurization catalysts, impurities, oil and other particulate matters is increased, and the purification effect on the OMC desulfurization waste liquid is greatly improved. After the first active material adsorbs suspended particulate matter and oils in the first purified liquid (the particles are from large to small), the first purified liquid is discharged through the second outlet 22 of the second-stage adsorption catalytic filter 2 to form a second purified liquid. In the second purified liquid, the content of suspended matters can be reduced to below 300mg/L (namely, less than or equal to 300mg/L), and the chroma is reduced to below 1000 degrees (namely, less than or equal to 1000 degrees). That is to say in the second purifying liquid at this moment, the content greatly reduced of suspended solid for second active material in it adsorbs a smaller amount of suspended sulfur (suspended sulfur particle is big) after the second purifying liquid enters into third level ceramic filter 3, improves the desulfurization catalyst that the second active material adsorbs more, improves the smoothness nature of second purifying liquid circulation.
In the third stage ceramic filter 3, the third inlet 31 is located at the top of the third stage ceramic filter 3, and the third outlet 32 is located at the bottom of the third stage ceramic filter 3; the second purifying liquid enters the third stage ceramic filter 3 through the third inlet 31 of the third stage ceramic filter 3, and is input above the second active material in the third stage ceramic filter 3, and the second purifying liquid flows through the second active material from top to bottom. The second purifying liquid vertically flows through the second active material from top to bottom, so that the second purifying liquid can be fully contacted with the second active material, the adsorption capacity of the second active material is fully utilized, the adsorption quantity of the second active material to the desulfurization catalyst, the suspended sulfur, impurities, oil and other particulate matters is increased, and the purification effect on the OMC desulfurization waste liquid is greatly improved. After flowing through the second active material from top to bottom, the second purified liquid is discharged through the third outlet 32 of the third stage ceramic filter 3, forming a third purified liquid. In the third purified liquid, the chroma is reduced to below 250 ℃ (namely, less than or equal to 250 ℃), and the content of suspended matters is reduced to below 120mg/L (namely, less than or equal to 120 mg/L).
Within the fourth ceramic filter 4, the fourth inlet 41 is located at the bottom of the fourth ceramic filter 4 and the fourth outlet 42 is located at the top of the fourth ceramic filter 4. The third purified liquid is fed to the lower part of the second ceramic membrane in the fourth ceramic filter 4 through the fourth inlet 41, and the third purified liquid flows through the second ceramic membrane from bottom to top. And when the third purifying liquid flows upwards, the third purifying liquid flows downwards for a certain distance due to the gravity of the waste liquid, the backflow liquid contacts with the pores of the second ceramic membrane again, part of suspended particles, catalysts and oils in the third purifying liquid are adsorbed, and the backflow waste liquid can continue to flow upwards, can contact with the pores of the second ceramic membrane and can adsorb part of the suspended particles, catalysts and oils. The third purifying liquid is contacted with the pores of the second ceramic membrane more closely and fully, so that the second ceramic membrane can further adsorb suspended sulfur, catalyst, oil and other impurities, the OMC desulfurization waste liquid is deeply purified, the adsorption quantity of suspended particles, catalyst and oil in the waste liquid is increased, and the adsorption capacity of the second ceramic membrane is improved. In the fourth purified liquid, the content of suspended matters can be reduced to be less than 20mg/L (namely less than or equal to 20mg/L), and the chroma is reduced to be less than 100 degrees (namely less than or equal to 100 degrees).
Through having optimized the OMC desulfurization waste liquid flow direction in to each level filter, make filter media or filter material of each level and the contact of OMC desulfurization waste liquid more abundant, mention greatly to the suspension sulphur, desulfurization catalyst, the absorption of other particle impurity and oils, the suspension sulphur has been reduced, desulfurization catalyst, the content of other particle impurity and oils, when making final exhaust fourth purifying liquid send the sintering to be used for joining in marriage the ore deposit, the produced sulfur dioxide of sintering, gas such as hydrogen sulfide also can significantly reduce, can not lead to sulfur dioxide, the hydrogen sulfide discharges the polluted environment that exceeds standard. In addition, the content of suspended sulfur and a desulfurization catalyst (sulfur-containing catalyst) is greatly reduced, the sulfur content in the sintered ore is less, the sulfur-containing catalyst is less, and the quality of the sintered ore can be improved.
Preferably, as the first-stage ceramic filter 1 mainly adsorbing suspended matters, the porous ceramic filter device comprises porous ceramics, the porous ceramics are arranged on the first ceramic membrane, and the porosity of the porous ceramics communicated with the first ceramic membrane is 39%. And the large porosity is adopted, so that a large amount of suspended sulfur can be quickly adsorbed.
Preferably, the first ceramic membrane has a porosity of 35% and a pore size in the range of: 0.5-2 μm, and can further rapidly adsorb a large amount of suspended sulfur.
Preferably, corundum ceramics used for supporting the first active material is arranged below the first active material, the corundum ceramics is communicated with the first active material, the corundum ceramics is provided with a channel from top to bottom, and the corundum ceramics, also called ceramic corundum or ceramic corundum, belongs to one type of ceramics, has the characteristics of corrosion resistance, high wear resistance and long service life, can not be corroded by the OMC desulfurization waste liquid in the process of contacting with the OMC desulfurization waste liquid, has long service life and reduces the maintenance and replacement cost. The channel of the corundum ceramics is communicated with the first active material, and the formed second purifying liquid is discharged out of the second-stage adsorption catalytic filter 2 after passing through the channel of the corundum ceramics. The corundum ceramic belongs to ceramic, is used for the first active material, and cannot be corroded by the OMC desulfurization waste liquid in the process of contacting with the OMC desulfurization waste liquid.
Preferably, the channel of the corundum ceramic is a plurality of filter tubes, and the gaps between two adjacent filter tubes are different. By utilizing the irregular gaps of the filter tubes, the waste liquid flowing out from the lower part of the first active material flows irregularly (or called baffling), so that the first active material is further increased to adsorb more suspended sulfur, other impurities, oils and desulfurization catalysts.
Preferably, the nominal diameter of the pipeline connected among the pump 10, the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3 and the fourth-stage ceramic filter 4 is 65mm, and the 65mm pipeline enables the waste liquid pump M to convey OMC desulfurization waste liquid to the first-stage ceramic filter 1 in a large flow, and also realizes large flow conveyance between every two adjacent filters, so as to ensure the purification speed and efficiency of the waste liquid. The material is 304 stainless steel, and the 304 stainless steel pipeline is high temperature resistant and can prevent the pipeline from being corroded by thiocyanate, thiosulfate and sulfate in the desulfurization waste liquid.
Preferably, electric shut-off valves are arranged among the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3 and the fourth-stage ceramic filter 4, so that one of the 4 stages of filters can be used for cutting off liquid inlet and liquid discharge and independently operating when necessary.
A plurality of first-stage ceramic filters 1 can be arranged in parallel, and each first-stage ceramic filter 1 is correspondingly provided with a corresponding second-stage adsorption catalytic filter 2, a corresponding third-stage ceramic filter 3 and a corresponding fourth-stage ceramic filter 4, so that a plurality of sets of filtering systems are formed, and the plurality of sets of systems run simultaneously, so that the waste liquid treatment capacity is improved. The nominal diameter of the pipeline adopted between the two connected filters is 65mm, and the material is 304 stainless steel, so that the treatment capacity of each system for the OMC desulfurization waste liquid can reach 15m3H is used as the reference value. Each system can treat OMC desulfurization waste liquid for more than 72 hours. As shown in fig. 2, two sets of purification devices for OMC desulfurization waste liquid connected in parallel are used, that is, a set of purification device for OMC desulfurization waste liquid is respectively arranged in the upper dotted line frame and the lower dotted line frame. Two sets of purification devices of OMC desulfurization waste liquid connected in parallel operate simultaneously, each set of purification treatment system of OMC desulfurization waste liquid is filtered by 4 levels successively, and the treatment process of the embodiment is as follows:
firstly, OMC desulfurization waste liquid is conveyed through a pump 10, the pump 10 conveys the OMC desulfurization waste liquid from a desulfurization waste liquid tank to the direction of a first-stage ceramic filter 1 through a total liquid inlet valve group M1 and a liquid inlet valve group 2w, the OMC desulfurization waste liquid enters the first-stage ceramic filter 1 through a first inlet 11, the OMC desulfurization waste liquid can be input to the upper part of a porous filter material in the first-stage ceramic filter 1, the OMC desulfurization waste liquid can flow through the porous filter material from top to bottom, the porous filter material comprises a first ceramic membrane and a porous ceramic filtering device, the porous ceramic filtering device and the first ceramic membrane are communicated with each other from top to bottom, and the porous ceramic filtering device is arranged on the first ceramic membrane, so the OMC desulfurization waste liquid firstly passes through the porous ceramic filtering device and then flows through the. By utilizing the characteristics of porous adsorption and large-particle adsorption of the porous ceramic filtering device and the first ceramic membrane, the porous ceramic filtering device and the first ceramic membrane can adsorb a large amount of suspended matters of large particles, and because the diameter of suspended sulfur is larger than that of the catalyst, the porous ceramic filtering device and the first ceramic membrane mainly adsorb suspended sulfur and other impurities with larger diameters, and also can adsorb a small amount of desulfurization catalyst (the desulfurization catalyst is blue), and meanwhile, the oil can be adsorbed. The OMC desulfurization waste liquid vertically flows through each filter material from top to bottom, so that the OMC desulfurization waste liquid can be fully contacted with each filter material, the adsorption capacity of the filter material is fully utilized, the adsorption quantity of the filter material on suspended sulfur, impurities, desulfurization catalysts, oil and other particulate matters is increased, and the purification efficiency of the OMC desulfurization waste liquid is improved. After the porous filter material adsorbs suspended particulate matters and oils in the waste liquid, the OMC desulfurization waste liquid is discharged through a first outlet 12 of the first-stage ceramic filter 1 to form a first purified liquid. By the adsorption of the porous ceramic filter device and the first ceramic membrane, a large amount of suspended matter and a small amount of catalyst are intercepted, and simultaneously, the oil exists, so that the content of suspended matter in the first purified liquid is greatly reduced. The content of suspended matters can be reduced to be below 800mg/L (namely less than or equal to 800mg/L), and the chroma is reduced to be below 3500 degrees (namely less than or equal to 3500 degrees).
Secondly, conveying the first purified liquid to a second-stage adsorption catalytic filter 2 through a liquid inlet valve group 6x, wherein the second-stage adsorption catalytic filter 2 is provided with a second inlet 21 and a second outlet 22, the second inlet 21 is positioned at the top of the second-stage adsorption catalytic filter 2, and the second outlet 22 is positioned at the bottom of the second-stage adsorption catalytic filter 2; the second inlet 21 is connected to the first outlet 12 in a pipeline manner; the second stage adsorption catalytic filter 2 comprises a first active material, which may be activated carbon. The first active material is inside the second stage adsorption catalytic filter 2 and is located between the second inlet 21 and the second outlet 22. The first purified liquid enters the second-stage adsorption catalytic filter 2 through the second inlet 21 above the first active material. The second inlet 21 is arranged at the top, the second outlet 22 is arranged at the bottom, so that the first purifying liquid can flow through the first active material from top to bottom, the waste liquid can be in full contact with the first active material due to the vertical flow of the first active material from top to bottom, the adsorption capacity of the first active material is fully utilized, the adsorption quantity of the first active material on suspended sulfur, desulfurization catalysts, impurities, oils and other particulate matters is increased, and the purification effect on the OMC desulfurization waste liquid is greatly improved. After the first active material adsorbs the suspended particulate matter and the oil in the first purified liquid (the particles are from large to small), the first purified liquid adsorbed with the suspended particulate matter and the oil is discharged through the second outlet 22 to form a second purified liquid. In the second purified liquid, the content of suspended matters can be reduced to below 300mg/L (namely, less than or equal to 300mg/L), and the chroma is reduced to below 1000 degrees (namely, less than or equal to 1000 degrees).
In the second purifying liquid at this moment, the content of suspended solid greatly reduced, after the second purifying liquid enters into third level ceramic filter 3 for the second active material in it adsorbs a smaller amount of suspended sulfur (suspended sulfur particle is big), improves the more desulfurization catalyst of second active material adsorption, improves the smoothness nature of second purifying liquid circulation.
The third and second purified liquids are delivered to a third-stage ceramic filter 3 through a liquid inlet valve group 7y, the third-stage ceramic filter 3 is provided with a third inlet 31 and a third outlet 32, the third inlet 31 is located at the top of the third-stage ceramic filter 3, the third outlet 32 is located at the bottom of the third-stage ceramic filter 3, and the second outlet 22 is connected to the third inlet 31 through a pipeline; the third stage ceramic filter 3 comprises a second active material, which is inside the third stage ceramic filter 3, which is located between the third inlet 31 and the third outlet 32. The second purifying liquid enters the upper part of the second active material in the third-stage ceramic filter 3 through the third inlet 31, so that the second active material adsorbs a large amount of desulfurization catalysts in the second purifying liquid, a small amount of suspension flow and other impurities are contained, and oil exists, the third inlet 31 is arranged at the top, the third outlet 32 is arranged at the bottom, so that the second purifying liquid vertically flows through the second active material from top to bottom, the second purifying liquid can be fully contacted with the second active material, the adsorption capacity of the second active material is fully utilized, the adsorption quantity of the second active material on the desulfurization catalysts, the suspension sulfur, the impurities, the oil and other particulate matters is improved, and the purification effect on the OMC desulfurization waste liquid is greatly improved. After flowing through the second active material from top to bottom, the second purified liquid is discharged through the third outlet 32 of the third stage ceramic filter 3, forming a third purified liquid. In the third purified liquid, the chroma is reduced to below 250 ℃ (namely, less than or equal to 250 ℃), and the content of suspended matters is reduced to below 120mg/L (namely, less than or equal to 120 mg/L).
Fourthly, the third purified liquid is conveyed to a fourth-stage ceramic filter 4 through a liquid inlet valve group 11z, and the fourth-stage ceramic filter 4 is provided with a fourth inlet 41 and a fourth outlet 42; the fourth inlet 41 is connected to the third outlet 32; the fourth stage ceramic filter 4 comprises a second ceramic membrane disposed within the fourth stage ceramic filter 4 between the fourth inlet 41 and the fourth outlet 42. The fourth inlet is located at the bottom of the fourth ceramic filter 4 and the fourth outlet is located at the top of the fourth ceramic filter 4. The third purified liquid is fed to the lower part of the second ceramic membrane in the fourth-stage ceramic filter 4 through the fourth inlet 41, and the second ceramic membrane adsorbs suspended particulate matters, catalysts and oils in the third purified liquid. The fourth inlet is arranged at the bottom, the fourth outlet is arranged at the top, so that the third purifying liquid flows through the second ceramic membrane from bottom to top, a vertical flowing mode from bottom to top is adopted, when the third purifying liquid flows upwards, the third purifying liquid can be contacted with the pores of the second ceramic membrane more closely and fully, the third purifying liquid can flow back downwards for a certain distance due to the gravity of the waste liquid, the third purifying liquid is contacted with the pores of the second ceramic membrane again in the backflow process, part of suspended particles, catalysts and oils existing in the waste liquid are adsorbed, the backflow waste liquid can continue to flow upwards and can be contacted with the pores of the second ceramic membrane, and part of the suspended particles, the catalysts and the oils can be adsorbed. The adsorption quantity of suspended particles, catalysts and oils in the waste liquid is increased, and the adsorption capacity of the second ceramic membrane is improved. Therefore, the second ceramic membrane can further adsorb suspended sulfur, catalyst, oil and other impurities, so that the OMC desulfurization waste liquid is deeply purified, the purified third purified liquid is discharged through the fourth outlet 42 of the fourth-stage ceramic filter 4, and the discharged waste liquid is the fourth purified liquid. In the fourth purified liquid, the content of suspended matters can be reduced to be less than 20mg/L (namely less than or equal to 20mg/L), and the chroma is reduced to be less than 100 degrees (namely less than or equal to 100 degrees).
Preferably, the device also comprises a control valve and a reclaimed water supply pipeline for cleaning the first-stage ceramic filter 1, the second-stage adsorption catalytic filter (2), the third-stage ceramic filter 3 and the fourth-stage ceramic filter 4, wherein the reclaimed water supply pipeline is connected with the pump 10, and the control valve is arranged on the reclaimed water supply pipeline. Specifically, after the OMC desulfurization waste liquid is purified for a certain period of time, for example, the continuous operation time is 72 hours, various substances adsorbed in the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3, and the fourth-stage ceramic filter 4 are removed, and the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3, and the fourth-stage ceramic filter 4 are respectively cleaned by using reclaimed water. The backwashing operation is automatically carried out by a control valve (electric valve).
The specific operation is as follows:
when wasing first order ceramic filter 1, close feed liquor valves 2w, feed liquor valves 6x, open the control valve in proper order, promptly: the backwash water valve group 3w, the backwash water valve group 4w and the backwash water enter the first-stage ceramic filter 1 through the first outlet 12 to backwash the first ceramic membrane and the porous ceramic filter device, and the backwash water (namely the reclaimed water) is discharged into the foam tank through the wash water valve group 3w from the first inlet 11; after the backwashing time is reached, for example, 10 minutes, the backwashing water valve group 3w and the backwashing water valve group 4w are closed, and the cleaned backwashing water flows to the foam tank through the backwashing water valve group 3 w. Then the liquid inlet valve set 2w and the liquid inlet valve set 6x are opened to enter a normal filtering state
When cleaning second level adsorption catalysis filter 2, close inlet valve group 6x, inlet valve group 7y, open backwash water valves 10x, backwash water valves 8x in proper order, backwash water gets into in second level adsorption catalysis filter 2 through second export 22 and carries out the back flush to first active material, the backwash water of formation is arranged to the foam tank in through backwash water valves 10x by second entry 21, reach the back flush time after, for example 10 minutes, close backwash water valves 10x, backwash water valves 8 x. Then, the liquid inlet valve group 6x and the liquid inlet valve group 7y are opened to enter a normal filtering state.
When the third-stage ceramic filter 3 is cleaned, the liquid inlet valve group 7y and the liquid inlet valve group 11z are closed, the backwashing water valve group 14y and the backwashing water valve group 12y are sequentially opened, backwashing water enters the third-stage ceramic filter 3 through the third outlet 32 and backflushs the second active material, the backwashing water is discharged into the foam tank through the backwashing water valve group 14y from the third inlet 31, and after the backwashing time is reached, for example, 10 minutes, the backwashing water valve group 14y and the backwashing water valve group 12y are closed. Then the liquid inlet valve group 7y and the liquid inlet valve group 11z are opened to enter a normal filtering state.
When the fourth-stage ceramic filter 4 is cleaned, the liquid inlet valve group 11z and the liquid outlet valve group 15z are closed, the backwashing water valve group 18z and the backwashing water valve group 16z are sequentially opened, backwashing water enters the fourth-stage ceramic filter 4 through the fourth outlet 42 to backwash the second ceramic membrane, the backwashing water is discharged into the foam tank through the backwashing water valve group 18z from the fourth inlet 41, and after the backwashing time is up, for example, 10 minutes, the backwashing water valve group 18z and the backwashing water valve group 16z are closed. And then the liquid inlet valve group 11z and the liquid inlet valve group 15z are opened to enter a normal filtering state.
Preferably, the device further comprises an electric valve and a steam generating device for cleaning the first-stage ceramic filter 1, the second-stage adsorption catalytic filter 2, the third-stage ceramic filter 3 and the fourth-stage ceramic filter 4, wherein the steam generating device is connected to the pump 10 through a pipeline, and the electric valve is arranged on the steam generating device. Specifically, after the first-stage ceramic filter 1 and the third-stage ceramic filter 3 are respectively back-cleaned with recycled water, the first-stage ceramic filter 1 and the third-stage ceramic filter 3 are respectively back-cleaned with steam. The backwashing operation is automatically carried out by a control valve (electric valve). The specific operation is as follows:
when rinsing first order ceramic filter 1, after carrying out the backwashing to first order ceramic filter 1 through the normal water, open the control valve, promptly: backwash steam valves 5w, backwash steam enters the first-stage ceramic filter 1 through the first outlet 12 and carries out backwash on the first ceramic membrane and the porous ceramic filter device, formed backwash steam is discharged into the foam tank through the backwash steam valves 3w from the first inlet 11, and after the backwash time is up, for example, 10 minutes, the backwash steam valves 3w and the backwash steam valves 5w are closed. And then the liquid inlet valve group 2w and the liquid inlet valve group 6x are opened to enter a normal filtering state.
When the second-stage adsorption catalytic filter 2 is cleaned, after backwashing of the second-stage adsorption catalytic filter 2 is completed through recycled water, the backwashing steam valve group 9x is opened, backwashing steam enters the second-stage adsorption catalytic filter 2 through the second outlet 22 and further backwashes the first active material, the formed backwashing steam is discharged into the foam tank through the backwashing valve group 10x through the second inlet 21, and after backwashing time is reached, for example, 10 minutes, the backwashing valve group 10x and the backwashing steam valve group 9x are closed in sequence. Then, the liquid inlet valve group 6x and the liquid inlet valve group 7y are opened to enter a normal filtering state.
When the third-stage ceramic filter 3 is cleaned, after backwashing of the third-stage ceramic filter 3 is completed through reclaimed water, the backwashing steam valve bank 13y is opened, backwashing steam enters the third-stage ceramic filter 3 through the third outlet 32 and backwashes the second active material, the backwashing steam is discharged into the foam tank through the backwashing water valve bank 14y through the third inlet 31, and after backwashing time is reached, for example, 10 minutes, the backwashing water valve bank 14y and the backwashing steam valve bank 13y are sequentially closed. Then the liquid inlet valve group 7y and the liquid inlet valve group 11z are opened to enter a normal filtering state.
When the fourth stage ceramic filter 4 is cleaned, after the fourth stage ceramic filter 4 is back-cleaned through reclaimed water, the backwashing steam valve bank 17z is opened, backwashing steam enters the fourth stage ceramic filter 4 through the fourth outlet 42 to back-flush the second ceramic membrane, the backwashing steam is discharged into the foam tank through the backwashing water valve bank 18z from the fourth inlet 41, and after the backwashing time is reached, for example, 10 minutes, the backwashing water valve bank 18z and the backwashing steam valve bank 17z are closed. And then the liquid inlet valve group 11z and the liquid inlet valve group 15z are opened to enter a normal filtering state.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A purification device for OMC desulfurization waste liquid is characterized by comprising: the device comprises a pump (10), a first-stage ceramic filter (1), a second-stage adsorption catalytic filter (2), a third-stage ceramic filter (3) and a fourth-stage ceramic filter (4), wherein the pump (10) is connected to the first-stage ceramic filter (1) through a pipeline, and the first-stage ceramic filter (1), the second-stage adsorption catalytic filter (2), the third-stage ceramic filter (3) and the fourth-stage ceramic filter (4) are sequentially connected through pipelines;
the first stage ceramic filter (1) is provided with a first inlet (11) and a first outlet (12), and the pump (10) is connected to the first inlet (11) in a pipeline way; the first-stage ceramic filter (1) comprises a porous filter material, the porous filter material is positioned in the first-stage ceramic filter (1), the porous filter material is positioned between the first inlet (11) and the first outlet (12), the porous filter material comprises a first ceramic membrane and a porous ceramic filter device, the porous ceramic filter device and the first ceramic membrane are arranged in a vertically communicated manner, and the porous ceramic filter device is arranged on the first ceramic membrane;
the second-stage adsorption catalytic filter (2) is provided with a second inlet (21) and a second outlet (22), and the second inlet (21) is connected to the first outlet (12) in a pipeline way; the second stage adsorption catalytic filter (2) comprises a first active material inside the second stage adsorption catalytic filter (2) and located between the second inlet (21) and the second outlet (22);
the third stage ceramic filter (3) is provided with a third inlet (31) and a third outlet (32), and the third inlet (31) is connected to the second outlet (22) in a pipeline way; the third stage ceramic filter (3) comprises a second active material, the second active material being inside the third stage ceramic filter (3), the second active material being located between the third inlet (31) and the third outlet (32);
-the fourth stage ceramic filter (4) has a fourth inlet (41) and a fourth outlet (42), the fourth inlet (41) being connected to the third outlet (32); the fourth stage ceramic filter (4) comprises a second ceramic membrane, the second ceramic membrane being located inside the fourth stage ceramic filter (4), and the second ceramic membrane being located between the fourth inlet (41) and the fourth outlet (42).
2. The apparatus for purifying an OMC desulfurization waste liquid according to claim 1, further comprising:
the first inlet (11) is positioned at the top of the first stage ceramic filter (1), and the first outlet (12) is positioned at the bottom of the first stage ceramic filter (1);
the second inlet (21) is positioned at the top of the second stage adsorption catalytic filter (2), and the second outlet (22) is positioned at the bottom of the second stage adsorption catalytic filter (2);
the third inlet (31) is positioned at the top of the third stage ceramic filter (3), and the third outlet (32) is positioned at the bottom of the third stage ceramic filter (3);
the fourth inlet (41) is located at the bottom of the fourth ceramic filter (4) and the fourth outlet (42) is located at the top of the fourth ceramic filter (4).
3. The apparatus for purifying OMC desulfurization waste liquid according to claim 1, wherein the porous ceramic filter device comprises a porous ceramic, the porous ceramic is located between the first outlet (12) and the first ceramic membrane, and the porous ceramic is communicated with the first ceramic membrane, and the porosity of the porous ceramic is 39%.
4. The apparatus for purifying OMC desulfurization waste liquid according to claim 3, wherein the porosity of the first ceramic membrane is 35%, and the pore size ranges from: 0.5 to 2 μm.
5. The apparatus for purifying OMC desulfurization waste liquid according to claim 1, wherein corundum ceramics for supporting the first active material is provided under the first active material, the corundum ceramics is communicated with the first active material, the corundum ceramics has a passage from top to bottom, and the passage of the corundum ceramics is communicated with the first active material.
6. The apparatus for purifying OMC desulfurization waste liquid according to claim 5, wherein the channel of corundum ceramics is a plurality of filter tubes, and the gap between two adjacent filter tubes is different.
7. A purification apparatus for OMC desulfurization waste liquid according to claim 6, wherein the nominal diameter of the pipeline connecting the pump (10), the first stage ceramic filter (1), the second stage adsorption catalysis filter (2), the third stage ceramic filter (3) and the fourth stage ceramic filter (4) is 65mm, and the material is 304 stainless steel.
8. The purification device of OMC desulfurization waste liquid according to claim 1, characterized in that electric shut-off valves are arranged among the first stage ceramic filter (1), the second stage adsorption catalytic filter (2), the third stage ceramic filter (3) and the fourth stage ceramic filter (4).
9. A purification apparatus for OMC desulfurization waste liquid according to claim 1, further comprising a control valve and a reclaimed water supply line for cleaning the first stage ceramic filter (1), the second stage adsorption catalytic filter (2), the third stage ceramic filter (3) and the fourth stage ceramic filter (4), wherein the reclaimed water supply line is connected to the pump (10), and the control valve is provided on the reclaimed water supply line.
10. The apparatus for purifying OMC desulfurization waste liquid according to claim 9, further comprising an electric valve and a steam generator for cleaning the first stage ceramic filter (1), the second stage adsorption catalyst filter (2), the third stage ceramic filter (3) and the fourth stage ceramic filter (4), wherein the steam generator is connected to the pump (10) through a pipeline, and the electric valve is disposed on the steam generator.
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| CN201922115010.0U CN211283931U (en) | 2019-11-29 | 2019-11-29 | Purifier of OMC desulfurization waste liquid |
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| CN201922115010.0U CN211283931U (en) | 2019-11-29 | 2019-11-29 | Purifier of OMC desulfurization waste liquid |
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