CN1078872C - Recovering treatment method for suspension in waste water during catalyst production - Google Patents
Recovering treatment method for suspension in waste water during catalyst production Download PDFInfo
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- CN1078872C CN1078872C CN 97112552 CN97112552A CN1078872C CN 1078872 C CN1078872 C CN 1078872C CN 97112552 CN97112552 CN 97112552 CN 97112552 A CN97112552 A CN 97112552A CN 1078872 C CN1078872 C CN 1078872C
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Abstract
The present invention relates to a recovering and processing method for producing suspended objects in catalyst production wastewater, particularly to a recovering and processing method for a molecular sieve and aluminum oxide. The method adopts micro hole filtering technology. Suspended objects in wastewater are recovered in the state of not adding any medicament. The suspended objects in catalyst production wastewater are recovered, and simultaneously, the dewatering operation is carried out to form a filter cake. When the filter cake reaches a certain thickness, the air is used for counter blowing, and the filter cake is removed from a recovery system. The filter cake of a catalyst semi-product, which is used as a main component, is directly recovered for being utilized in the catalyst production process. The concentration of the filtered suspended objects in the wastewater can be reduced to less than 200 ppm from 1500 to 5000 ppm, and thus, the catalyst production yield is increased. The loads of processing the suspended objects in a catalyst production wastewater processing field are reduced, and the running cost of the wastewater processing field is reduced.
Description
The invention belongs to the recovery and treatment method of suspended substance in a kind of catalyst production waste water, especially belong to the recovery method of suspended substance in a kind of oil refining process catalyst production waste water (with waste water loss material).
Discharge a large amount of waste water in the Catalyst Production process.Contain a large amount of pollutents in its waste water, the waste water that the one-tenth glue that its main discharge point is the Catalyst Production process, the unitary filtration procedure of washing are discharged, the principal pollutant in these waste water are suspended substance (solid materialss of discharging with water in the filtration procedure).These suspended substances are finished product or work in-process of Catalyst Production process.Environment has not only been polluted in the discharging of these waste water, and the while has also caused the loss of material to reduce the yield of product.
Processing for oil refining process Catalyst Production processing wastewater, adopt always and concentrate factory effluent the treatment process that precipitates, flocculates to remove suspended substance, although can reaching waste treatment, this technology reduces the purpose of polluting, but the thickened solid thing that obtains after the flocculation is because characteristic variations, can not reclaim and be used for Catalyst Production, need a large amount of land occupations remove to build sewage-farm and solid waste and stack.This technology is widely used in the processing of catalyst production waste water, but the requirement that production cost is descended along with enterprise increases day by day and wishes to reclaim useful material, and the processing costs that reduces waste water is so that the bigger economic benefit of acquisition.Above treatment process can not satisfy the requirement of production.Because the singularity of Catalyst Production process and, " pollutent " in the catalyst production waste water recycling of classify respectively still there is not scheme preferably to the specification of quality strictness of product.CN93112674.6 " separation method of solidliquid mixture and device " has proposed a kind of in the method that improves press filtration under the temperature condition, device mainly comprises a collection container, pressure filter, a blowdown system and is used for phlegma and the container of solids composition that this process is applicable to the suspension of handling ore in sand form or coal.Because need improving the temperature of charging, this method make process become complicated, energy consumption increases greatly, during especially for the processing of low concentration suspension, thereby, can not be used for the processing of catalyst production waste water, in addition, the solid materials that reclaims with this method may cause physico-chemical property to change under heating state.
CN92107803 " pretreatment process of feed water by reverse osmosis " has proposed a kind of pretreatment process of urban drinking water.Its method is to make former water by the PE Membrane filtering machine, and on the PE film, hang one deck diatomite or Powdered Activated Carbon flocculating aids in advance, though this method has filter effect preferably, but for resembling the higher material of the such solids content of catalyst production waste water, then can not be suitable for, particularly, make it more can not reach the purpose that reclaims pure solid materials because this method has been used flocculating aids.
Existing microporous filter
(1) owing to have water in filtering beginning back millipore filtration tubular type film, produce static pressure, filtration flux reduces, and filtration flux has only 90-100L/m
2.h.
(2) in filtration procedure, after diameter penetrates micropore filtering film less than the solids of millipore filtration membrane pore size in the waste water, because the ratio of solids is great, and the clear water flow velocity is very low in the tube-type micropore filtering membrane, can not discharge with filtering clear water, finally be deposited on the inboard of micropore filtering film, cause the obstruction of micropore filtering film, the life cycle of micropore filtering film has only 2 months.
(3) when being used to contain the solution-treated of higher concentration suspended substance, trivial operations, labor intensity is big, and is wayward.
(4) owing to added flocculating aids at the filtration initial stage, the solid materials of holding back can not reclaim and be used for Catalyst Production.
The object of the present invention is to provide a kind of processing catalyst production waste water, reclaim the method for useful resources wherein simultaneously.
The invention provides the millipore filtration technology and the unique millipore filtration equipment that are used to reclaim the Catalyst Production spent process water, reached the purpose that reclaims suspended substance in the oil refining catalyst production process waste water.With it in reclaiming the draining of oil refining catalyst production process, run off material, improve Catalyst Production process yield in, also reached the minimizing pollutant emission, the purpose of protection environment.Figure-2 has illustrated the structure of transforming the back microporous filter.
Main process of the present invention is: the waste water that the refining catalytic agent producing process is discharged carries out the millipore filtration processing at its technology relief outlet respectively, reclaims the material that runs off in the draining respectively and purifies draining.Further, the alumine hydroxide colloid that uses the millipore filtration technology and equipment to handle the filter draining of Na-Y molecular sieve production process, the one-tenth glue filter in the catalytic cracking catalyst production process and balling-up washing and filtering machine drainge, the draining of super stable molecular sieve filter, the draining of full carclazyte catalytic cracking catalyst production filter, catalyst carrier for hydrgenating (aluminum oxide) production process respectively becomes draining of glue filter and the draining of colloid washing and filtering, reclaims the solid materials that runs off with waste water.
The present invention adopts a cover to include the technological process of storage tank, millipore filtration unit, air accumulator, fresh feed pump, not in waste water and add the pollutent (loss solid materials) that reclaims under the situation of any medicament in the catalyst production waste water in the recovery system.Make the material of recovery no longer be directly used in Catalyst Production, simultaneously catalyst production waste water is handled through any processing.Its technological principle is seen figure-1.
Reclaim the material that runs off in the draining of oil refining catalyst production process, when improving Catalyst Production process yield, also reached the minimizing pollutant emission, the purpose of protection environment with technology of the present invention.
The elementary operation of the recovery method of suspended substance is divided in the catalyst production waste water of the present invention, the collection of waste water, filtration, discharging, three processes of backwash.In order to keep the pure of recovered material, in filtration procedure, do not add flocculating aids, keep the filtration treatment amount by improving filter pressure gradually.For work-ing life of guaranteeing microporous filter 3 with prolong running period, the ultra micron of avoiding passing deposits in micropore filtering film pipe 14, the water outlet of the micropore filtering film pipe 14 in the microporous filter 3 of the present invention is all opened downwards, makes the ultra micron that passes discharge filter with current.
Flow process of the present invention is as follows:
1, filtration procedure
In the Catalyst Production process, the suspended matter-containing wastewater (hereinafter to be referred as " waste water ") that filtering unit is discharged enters a water tank 1 through 101 pipelines, and the effect of water tank 1 is that (1) stores the filtering unit draining of mass flow discrepancy weighing apparatus in jar; (2) as the unitary front buffer jar of millipore filtration, to adapt to the unitary intermittent cyclic operation of millipore filtration.Waste water enters pump 6 from water tank 1 through pipeline 103, enters the opening for feed 13 of microporous filter 3 through pressure valve 2 from pipeline 104 through the waste water of pump 6 pressurizations.The waste water that enters microporous filter 3 sees through micropore filtering film pipe 14 (figure-2), enters the inside of micropore filtering film pipe 14, and the water port 7 through being arranged on microporous filter 3 bottoms is discharged microporous filter 3.Entering the suspended substance solid that contains in the waste water of microporous filter 3 is held back by micropore filtering film pipe 14, outside surface at micropore filtering film pipe 14 forms filter cake, carrying out along with filtration procedure, thicken gradually at the cake layer that the outside surface of micropore filtering film pipe 14 forms, the filter pressure of microporous filter 3 raises gradually simultaneously, when filtration pressure is elevated to set(ting)value (generally being set at 0.08-0.2MPa), delay (being generally 0.5-1.0h) through certain hour, stop filtration procedure, enter discharge process.
2, the operating process of discharge process
Discharging is gone into the inside of micropore filtering membrane tube 14 with pressurized air from outlet 7 blowbacks of microporous filter 3.The concrete operations flow process is: enter compressed air reservoir 4 from the pressurized air of air compressor 5 through pipeline 107, pass through valve 10 more successively, 12 enter the interior pipe of micropore filtering film pipe 14, simultaneously by micropore filtering film pipe 14 outside mobile, filter cake attached to the millipore filtration film outer surface is stripped down, the filter cake that strips down excretes with the discharge opening 16 of air through microporous filter 3, and filter cake is collected to reclaim through collecting device and is used for Catalyst Production.Enter backwash operation after finishing discharging.
3, backwash operation process
Through behind the micropore filtering film pipe 14 removal filter cakes of filter operation, the small amount of solid particle sticks to micropore filtering film pipe 14 surfaces or is trapped in the hole of micropore filtering film pipe 14 in addition, and this part solids is not removed the filter operation that can have a strong impact on next round.Backwash hockets with pressurized air and pressurized water.Its operating process is: at first pressurized water is passed through pipeline 108 successively, valve 11,12 imports the water outlet 7 of microporous filters 3, enters the inboard of micropore filtering film pipe 14, stops to enter pressurized water second through 3-15.Feed pressurized air 1-5 second by valve 10,12 successively.Introduce pressurized water again, successively repeatedly several times, till washes clean, the waste water after the washing turns back to water tank 1.Enter the next round filter operation then.
Process conditions is described
1, the pre-membrane filtration pressure at millipore filtration unit filtration initial stage generally between 0.005-0.02MPa, preferably remains between the 0.05-0.01Mpa.The pre-membrane filtration time is preferably in 20-40 minute generally at 10-60 minute.
2, the unitary final filter pressure of millipore filtration is generally 0.05-0.2MPa, is preferably disposed between the 0.1-0.18MPa.The micropore size of micropore filtering film is 11-50 μ m, and waste water need not heating in the filtration procedure, and the surface of micropore filtering film pipe 14 also need not to hang and helps filter membrane.
3, the compressed-air actuated pressure of discharging preferably remains on 0.45-0.6MPa generally at 0.25-0.8MPa.Discharging blowback number of times is generally 2-10 time, is preferably 3-5 time.The blowback time is generally 1-15 second, is preferably 3-5 second.
4, the pressure of backwash pressurized water is generally 0.2-0.6MPa, preferably remains on 0.4-0.5MPa.Water backwash number of times is generally 1-10 time, is preferably 4-6 time.Each backwash time is generally 1-20 second, is preferably 3-6 second.
5, the compressed-air actuated pressure of backwash is generally 0.3-0.8MPa, preferably remains on 0.45-0.6MPa.Pressurized air backwash number of times is generally 1-10 time, is preferably 4-6 time.Each backwash time is generally 1-20 second, is preferably 3-5 second.
6, the SS concentration of the catalyst production waste water of Chu Liing is generally 500-20000mg/L, is preferably 2000-8000mg/L.
7, the unitary service temperature of millipore filtration is generally 0-80 ℃, preferably remains on 30-40 ℃.
8, the size distribution of solids is preferably in 2-150 μ m generally at 0.5-200 μ m in the catalyst production waste water of Chu Liing.
Figure-1 reclaims suspended substance technological principle flow process for catalyst production waste water millipore filtration of the present invention;
1: go out water pot; 2: pressure valve; 3: microporous filter; 4: compressed air reservoir; 5: air compressor; 6: pump; 7: water port; 8: under meter; 9: valve; 10: valve; 11: valve; 12: valve; 13: opening for feed; 15: the raffinate relief outlet; 16: discharge opening; 101: feed line; 102: the raffinate reflux pipeline; 103: the pump feeding line; 104 microporous filter feeding lines; 106: the filtered water vent line; 106: compressed-air line; 108: the pressurized water pipeline.
Figure-2 is microporous filter structure iron of the present invention.
7: water port; 13: opening for feed; 14: the micropore filtering film pipe; 15: the raffinate relief outlet; 16: discharge opening.
The present invention has following advantage:
(1) by the modes of emplacement of micro porous filtration tubular type film opening upwards in the microporous filter, changes the mode of downward placement into, solved in the filter process because the problem that solids stop up micropore filtering film in micropore filtering film pipe internal surface deposition.
(2) got rid of static pressure loss in the micropore filtering film pipe by improvement. Make filtration flux bring up to 120-170L/m2.h。
(3) adopt the stepless process of boosting, formed elementary cake layer at the filtration initial stage at the micro porous filtration film outer surface, reached the purpose of pre-film, in the solid material that reclaims, do not added any auxiliary agent simultaneously.
Adopt method of the present invention when processing the Catalyst Production draining, can the SS concentration in the Catalyst Production draining that contain SS 5000mg/L be reduced to below the 150mg/L, the solid material solid content of recovery is at 40w %-80w%. Prolonged compared with prior art the service life of micropore filtering film largely, the solid suspension of recovery is directly reclaimed for Catalyst Production.
The present invention has solved the pollutant that reclaims in the catalyst production waste water well, makes it be used for Catalyst Production, has solved simultaneously micropore filtering film life cycle weak point in the Filtration Process with Porous Ceramics, holds susceptible to plugging technical problem.
Microporous filter operating condition of the present invention and result
(1) filter pressure 0～0.08MPa
(2) the minimum controlling value 70L/h.m of filtration flux2
(3) blowback air pressure 0.45MPa, 3 times/group. 5 seconds/time cycles
(4) backwash air pressure 0.4～0.45MPa
Backwash water pressure 0.12～0.2MPa
3 times/group hockets. 5 seconds/time cycles
(5) microvoid pipe model PE-7 result of the test: the result table microporous filter clear water flux of the present invention result of the test of microporous filter of the present invention
| The filtration initial stage | After 380 filter cycles | ||
| Filter pressure (Mpa) | Clear water flux (l/m2.h) | Filter pressure (MPa) | Clear water flux (l/m2.h) |
| 0.017 | 390 | 0.015 | 333 |
| 0.020 | 404 | 0.020 | 402 |
| 0.025 | 450 | 0.025 | 456 |
| 0.026 | 470 | 0.030 | 510 |
Table-1, the millipore filtration of catalytic cracking catalyst waste water
Embodiment 2
| The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% | The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% |
| PE-7 | 5004 | 304.4 | 80.4 | PE-6 | 3002 | 113.9 | 75.4 |
| PE-5 | 1838 | 111.7 | ----- | PE-4 | 728 | 186.3 | 65.4 |
| PE-3 | 2786 | 72.9 | 80.7 |
Table-2 catalytic cracking catalyst waste water millipore filtrations
Embodiment 3
| The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% | The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% |
| PE-7 | 2116 | 45.8 | 72.8 | PE-6 | 1632 | 47.8 | ----- |
| PE-5 | 33278 | 29.8 | 70.5 | PE-4 | 5802 | 323.0 | 77.8 |
| PE-3 | 3128 | 85.3 | 70.4 |
Table-3 molecular sieve waste water millipore filtrations
Embodiment 4
| The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% | The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% |
| PE-7 | 6786 | 106 | 56.8 | PE-6 | 4054 | 432 | ----- |
| PE-5 | 4230 | 146 | 44.2 |
Table-4 molecular sieve waste water millipore filtrations
Embodiment 5
| The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% | The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% |
| PE-7 | 1412 | 236 | 60.6 | PE-6 | 1410 | 265 | ------ |
| PE-5 | 11308 | 137.8 | 60.3 | PE-3 | 1664 | 210.8 | 59.2 |
Table-5 catalytic cracking catalyst waste water millipore filtrations
| The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% | The film model | Former water SS mg/L | Water outlet SS mg/L | Filter cake water capacity w% |
| PE-7 | 12560 | 199.4 | 58.4 | PE-6 | 3856 | 511.4 | 48.3 |
| PE-5 | 234 | 80.2 | 40.5 |
Claims (5)
1, the recovery and treatment method of suspended substance in a kind of catalyst production waste water, adopt the millipore filtration technology, the waste water that it is characterized in that the Catalyst Production discharge is sent into microporous filter [3], when the filter pressure of microporous filter [3] is elevated to 0.08～0.2MPa, postpone through 0.5～1.0h, stop filtration procedure.
2,, it is characterized in that the water outlet of the micropore filtering film pipe [14] in the said microporous filter [3] is provided with downwards according to the method for claim 1.
3, according to the method for claim 1, the micropore size that it is characterized in that micropore filtering film is at 11-50 μ m.
4,, it is characterized in that catalyst production waste water is meant the catalyst production waste water that is used for oil refining process according to the method for claim 1.
5,, it is characterized in that the alumine hydroxide colloid that catalyst production waste water is meant that the filter draining of Na-Y molecular sieve production process, the one-tenth glue filter in the catalytic cracking catalyst production process and balling-up washing and filtering machine drainge, the draining of super stable molecular sieve filter, full carclazyte catalytic cracking catalyst are produced filter draining, catalyst carrier for hydrgenating production process becomes draining of glue filter and the draining of colloid washing and filtering according to the method for claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97112552 CN1078872C (en) | 1997-07-22 | 1997-07-22 | Recovering treatment method for suspension in waste water during catalyst production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97112552 CN1078872C (en) | 1997-07-22 | 1997-07-22 | Recovering treatment method for suspension in waste water during catalyst production |
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|---|---|
| CN1205987A CN1205987A (en) | 1999-01-27 |
| CN1078872C true CN1078872C (en) | 2002-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97112552 Expired - Lifetime CN1078872C (en) | 1997-07-22 | 1997-07-22 | Recovering treatment method for suspension in waste water during catalyst production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179756A (en) * | 2018-09-26 | 2019-01-11 | 衢州华友钴新材料有限公司 | A kind for the treatment of process purifying SS from hydrometallurgy cobalt copper solution |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863591B (en) * | 2010-06-17 | 2012-02-22 | 重庆远达水务有限公司 | Technique for treating wastewater in production of denitration catalyst |
| CN102976790A (en) * | 2011-09-02 | 2013-03-20 | 林洁丽 | Glaze slip dehydrating device with high efficiency and low cost |
| CN107117726B (en) * | 2016-02-25 | 2020-09-11 | 中国石油化工股份有限公司 | Recovery processing method of suspended solid containing copper, zinc and aluminum in catalyst production wastewater |
-
1997
- 1997-07-22 CN CN 97112552 patent/CN1078872C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179756A (en) * | 2018-09-26 | 2019-01-11 | 衢州华友钴新材料有限公司 | A kind for the treatment of process purifying SS from hydrometallurgy cobalt copper solution |
| CN109179756B (en) * | 2018-09-26 | 2022-02-11 | 衢州华友钴新材料有限公司 | Treatment process for purifying SS from hydrometallurgical cobalt-copper solution |
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| Publication number | Publication date |
|---|---|
| CN1205987A (en) | 1999-01-27 |
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Owner name: CHINA PETROCHEMICAL CORPORATION; CHINA PETROLEUM Free format text: FORMER OWNER: CHINA PETRO-CHEMICAL CORP.; FUSHUN PETROCHEMICAL INSTITUTE., CHINA PETROCHEMICAL CORP. Effective date: 20010723 |
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