CN204939575U - A kind of device reclaiming W and V from waste flue gas denitration catalyst - Google Patents
A kind of device reclaiming W and V from waste flue gas denitration catalyst Download PDFInfo
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- CN204939575U CN204939575U CN201520736917.8U CN201520736917U CN204939575U CN 204939575 U CN204939575 U CN 204939575U CN 201520736917 U CN201520736917 U CN 201520736917U CN 204939575 U CN204939575 U CN 204939575U
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- kiln
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model discloses a kind of device reclaiming W and V from waste flue gas denitration catalyst, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15 and B calcining furnace 16, hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, concentration basin 9 is connected with plate-and-frame filter press 3.The utility model can extract and obtain purity and all higher V of the rate of recovery from waste flue gas denitration catalyst
2o
5and WO
3.
Description
Technical field
The utility model relates to a kind of recovery technology of waste flue gas denitration catalyst, especially a kind of device reclaiming W and V from waste flue gas denitration catalyst.
Background technology
SCR denitration technology is the necessary means that power plant reaches ultra-clean discharge, and catalyzer, as the core of SCR denitration technology, can lose activity due to reasons such as wearing and tearing or blockings in operational process.Can continue use after the part catalyst regeneration that can regenerate, unrenewable catalyzer then faces the condition (i.e., after the catalyst regeneration 2 ~ 3 times of enable regeneration, also cannot regenerate, need to carry out Appropriate application and process) of Appropriate application and disposal.The mode of external process waste denitration catalyst is all landfill at present, but power plants is more, and the annual waste denitration catalyst quantity produced is considerable.According to incompletely statistics, the output of the annual waste denitration catalyst of China is 50,000 tons, and from discarded denitrating catalyst recuperable V
2o
5there are more than 500 tons, WO
3there are 2500 tons, and V
2o
5and WO
3very expensive (the simultaneously V of price
2o
5also belong to toxic substance).Therefore be economically or environmental angle consider that the recycling carrying out waste denitration catalyst is all necessary.
V
2o
5and WO
3all belong to metal oxide, character is close, and containing TiO in waste flue gas denitration catalyst
2and the mixture of glass fibre, therefore by V
2o
5and WO
3separately be not easy very much.The mode of external process waste denitration catalyst is all landfill, and the domestic recovery and utilization technology for denitrating catalyst is also still in research and stage of fumbling, yet there are no industrialization report so far.Found by retrieval, the recovery and utilization technology at present about waste denitration catalyst mainly comprises 2 kinds of modes: 1. high-temperature roasting method is (as patent application CN103088217A; CN101921916A; CN103508491A); 2. first use basic solution process, then add acid solution process (as patent application CN102936049A; CN102936039A).But adopting above-mentioned high-temperature roasting method to reclaim denitrating catalyst consumes energy more, is applicable to suitability for industrialized production; In addition, first use base extraction, denitrating catalyst is reclaimed again by the method for acid solution process, seriously (such as required alkali lye is excessive for reagent waste on the one hand, unnecessary alkali lye recycling acid solution neutralizing treatment), be unfavorable for effective utilization of resource, on the other hand, in the removal process of catalyzer, generate Na
2siO
3colloid, so when utilizing the mode of filtering to carry out solid-liquid separation, colloid is easy to stay on filter paper together with precipitating, and makes to be separated not exclusively, and then causes WO
3and V
2o
5dNA purity is lower, and extraction efficiency is also lower simultaneously.Therefore, a kind of new technology of current urgent need is by the WO in waste flue gas denitration catalyst
3and V
2o
5extract respectively.
Utility model content
The purpose of this utility model is, a kind of device reclaiming W and V from waste flue gas denitration catalyst is provided, it effectively can solve problems of the prior art, especially high-temperature roasting method power consumption more, be not suitable for suitability for industrialized production, and first with base extraction, WO serious by the method reagent waste of acid solution process again
3and V
2o
5the problem that DNA purity and extraction efficiency are all lower.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of device reclaiming W and V from waste flue gas denitration catalyst, comprise: hammer-crusher, acid hydrolysis tank, plate-and-frame filter press, A reaction tank, A vacuum filter, B reaction tank, A kiln, A calcining furnace, concentration basin, hydrolytic tank, leaf filter, A settling bowl, C reaction tank, B vacuum filter, B kiln and B calcining furnace, described hammer-crusher, acid hydrolysis tank, plate-and-frame filter press, A reaction tank, A vacuum filter, B reaction tank, A kiln, A calcining furnace connects in turn, described concentration basin, hydrolytic tank, leaf filter, A settling bowl, C reaction tank, B vacuum filter, B kiln, B calcining furnace connects in turn, concentration basin is connected with plate-and-frame filter press.
Preferably, also comprise: air compressor machine and jetting machine, described jetting machine is connected with air compressor machine and hammer-crusher respectively, thus more effectively can remove impurity and the toxic substance (as arsenic, mercury, potassium oxide, sodium oxide) of catalyst surface, improve product purity, cost is also lower simultaneously.
In the utility model, also comprise: B settling bowl, described B settling bowl is connected with acid hydrolysis tank and plate-and-frame filter press respectively, thus can by colloidal polyurea wherein integrated macrobead, be conducive to removing all dirt in filtration, improve product WO
3and V
2o
5purity.
Aforesaidly reclaim from waste flue gas denitration catalyst in the device of W and V, also comprise: C kiln and C calcining furnace, described C kiln is connected with C calcining furnace and leaf filter respectively, thus can obtain pure TiO
2.
Preferably, also comprise: impeller pump, described impeller pump is connected with A settling bowl and hydrolytic tank respectively, thus makes to discharge without any refuse in whole recycling process, not only increases the utilization ratio of raw material, and further increases TiO
2and/or V
2o
5organic efficiency.
Compared with prior art, the utility model is by utilizing hammer-crusher, acid hydrolysis tank, plate-and-frame filter press, A reaction tank, A vacuum filter, B reaction tank, A kiln, A calcining furnace, concentration basin, hydrolytic tank, leaf filter, A settling bowl, C reaction tank, B vacuum filter, B kiln and B calcining furnace, especially by utilizing acid hydrolysis tank, plate-and-frame filter press, thus can by WO
3separate from titanyl sulfate and vanadylic sulfate solution; Again by utilizing A reaction tank, A vacuum filter, B reaction tank, A kiln, A calcining furnace, concentration basin, hydrolytic tank, leaf filter, A settling bowl, C reaction tank, B vacuum filter, B kiln and B calcining furnace, thus namely separablely obtain pure V
2o
5.And show according to mass data statistics, after adopting scheme of the present utility model, V
2o
5, WO
3organic efficiency reach 90%, 93% respectively, purity reaches 87%, 90% respectively.Recovery technology of the present utility model is without the need to high-temperature roasting, and thus relative energy-saving, is suitable for suitability for industrialized production; The utility model adopts acid hydrolysis tank to carry out acid solution process simultaneously, without reagent waste, has effectively saved resource; In addition, also SiO can be obtained in the utility model
2with Al (OH)
3, it can be used as product and sells, for making refractory materials; SiO is obtained in the utility model
2mode simple and convenient (without colloid Na
2siO
3generate), and extraction yield is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Reference numeral: 1-hammer-crusher, 2-acid hydrolysis tank, 3-plate-and-frame filter press, 4-A reaction tank, 5-A vacuum filter, 6-B reaction tank, 7-A kiln, 8-A calcining furnace, 9-concentration basin, 10-hydrolytic tank, 11-leaf filter, 12-A settling bowl, 13-C reaction tank, 14-B vacuum filter, 15-B kiln, 16-B calcining furnace, 17-air compressor machine, 18-jetting machine, 19-B settling bowl, 20-C kiln, 21-C calcining furnace, 22-impeller pump.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment
Embodiment 1: a kind of device reclaiming W and V from waste flue gas denitration catalyst, as shown in Figure 1, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16, C kiln 20 and C calcining furnace 21, described hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, described concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, C kiln 20 is connected with C calcining furnace 21 and leaf filter 11 respectively, concentration basin 9 is connected with plate-and-frame filter press 3.Also comprise: air compressor machine 17 and jetting machine 18, described jetting machine 18 is connected with air compressor machine 17 and hammer-crusher 1 respectively.Also comprise: B settling bowl 19, described B settling bowl 19 is connected with acid hydrolysis tank 2 and plate-and-frame filter press 3 respectively.Also comprise: impeller pump 22, described impeller pump 22 is connected with A settling bowl 12 and hydrolytic tank 10 respectively.
Embodiment 2: a kind of device reclaiming W and V from waste flue gas denitration catalyst, as shown in Figure 1, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15 and B calcining furnace 16, described hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, described concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, concentration basin 9 is connected with plate-and-frame filter press 3.Also comprise: B settling bowl 19, described B settling bowl 19 is connected with acid hydrolysis tank 2 and plate-and-frame filter press 3 respectively.
Embodiment 3: a kind of device reclaiming W and V from waste flue gas denitration catalyst, as shown in Figure 1, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15 and B calcining furnace 16, described hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, described concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, concentration basin 9 is connected with plate-and-frame filter press 3.Also comprise: air compressor machine 17 and jetting machine 18, described jetting machine 18 is connected with air compressor machine 17 and hammer-crusher 1 respectively.
Embodiment 4: a kind of device reclaiming W and V from waste flue gas denitration catalyst, as shown in Figure 1, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16, C kiln 20 and C calcining furnace 21, described hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, described concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, C kiln 20 is connected with C calcining furnace 21 and leaf filter 11 respectively, concentration basin 9 is connected with plate-and-frame filter press 3.
Embodiment 5: a kind of device reclaiming W and V from waste flue gas denitration catalyst, as shown in Figure 1, comprise: hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8, concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15 and B calcining furnace 16, described hammer-crusher 1, acid hydrolysis tank 2, plate-and-frame filter press 3, A reaction tank 4, A vacuum filter 5, B reaction tank 6, A kiln 7, A calcining furnace 8 connects in turn, described concentration basin 9, hydrolytic tank 10, leaf filter 11, A settling bowl 12, C reaction tank 13, B vacuum filter 14, B kiln 15, B calcining furnace 16 connects in turn, concentration basin 9 is connected with plate-and-frame filter press 3.
The principle of work of a kind of embodiment of the present utility model: purged by the pressurized air of waste flue gas denitration catalyst air compressor machine 17, removes the dust in duct; Catalyzer after removing dust is rinsed with the water blast gun of jetting machine 18, removes the dust in duct further; Flushed catalyzer is dry.Hammer-crusher 1 is by break-up of catalyst, catalyst fines after pulverizing adds acid hydrolysis tank 2 and carries out acidolysis, after acidolysis, adds the polyacrylamide that concentration is 1%, at B settling bowl 19 by integrated for colloidal polyurea wherein macrobead (being convenient to impurity all to remove), obtain titanyl sulfate solution; Utilize plate-and-frame filter press filter titanyl sulfate solution, residue collection is for subsequent use, filtrate heat in concentration basin 9 concentrate after be hydrolyzed in hydrolytic tank 10, obtain hydrolysate; Described hydrolysate is filtered by leaf filter 11, obtains filtrate and metatitanic acid precipitation; Filtrate after leaf filter 11 filters carries out settlement treatment at A settling bowl 12, and filter, (gained lower floor solid matter is pumped in hydrolytic tank 10 by impeller pump 22 and continues the process that is hydrolyzed) gets supernatant liquid, adds excessive NH in clear liquid
4cl, after C reaction tank 13 reacts, utilizes B vacuum filter 14 to filter, obtains metavanadic acid ammonia precipitation; Utilized by this metavanadic acid ammonia precipitation B kiln 15 dry, utilize B calcining furnace 16 to calcine, obtain pure V
2o
5; Metatitanic acid precipitation is carried out Ficus caricaL, and dry at C kiln 20, calcining in C calcining furnace 21, get product TiO
2; Add after excessive ammonia reacts in A reaction tank 4 in filter residue after plate-and-frame filter press 3 filters, utilize A vacuum filter 5 to filter; Filtrate is heated in B reaction tank 6, after (part) ammonia and water evaporate, generates order of ammoniumparatungstate crystal, utilizes A kiln 7 drying and utilizes A calcining furnace 8 to calcine, obtaining pure WO
3.
Claims (5)
1. from waste flue gas denitration catalyst, reclaim a device of W and V, it is characterized in that, comprising: hammer-crusher (1), acid hydrolysis tank (2), plate-and-frame filter press (3), A reaction tank (4), A vacuum filter (5), B reaction tank (6), A kiln (7), A calcining furnace (8), concentration basin (9), hydrolytic tank (10), leaf filter (11), A settling bowl (12), C reaction tank (13), B vacuum filter (14), B kiln (15) and B calcining furnace (16), described hammer-crusher (1), acid hydrolysis tank (2), plate-and-frame filter press (3), A reaction tank (4), A vacuum filter (5), B reaction tank (6), A kiln (7), A calcining furnace (8) connects in turn, described concentration basin (9), hydrolytic tank (10), leaf filter (11), A settling bowl (12), C reaction tank (13), B vacuum filter (14), B kiln (15), B calcining furnace (16) connects in turn, and concentration basin (9) is connected with plate-and-frame filter press (3).
2. the device reclaiming W and V from waste flue gas denitration catalyst according to claim 1, it is characterized in that, also comprise: air compressor machine (17) and jetting machine (18), described jetting machine (18) is connected with air compressor machine (17) and hammer-crusher (1) respectively.
3. the device reclaiming W and V from waste flue gas denitration catalyst according to claim 1, it is characterized in that, also comprise: B settling bowl (19), described B settling bowl (19) is connected with acid hydrolysis tank (2) and plate-and-frame filter press (3) respectively.
4. the device reclaiming W and V from waste flue gas denitration catalyst according to any one of claims 1 to 3, it is characterized in that, also comprise: C kiln (20) and C calcining furnace (21), described C kiln (20) is connected with C calcining furnace (21) and leaf filter (11) respectively.
5. the device reclaiming W and V from waste flue gas denitration catalyst according to claim 4, it is characterized in that, also comprise: impeller pump (22), described impeller pump (22) is connected with A settling bowl (12) and hydrolytic tank (10) respectively.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200236A (en) * | 2015-09-22 | 2015-12-30 | 中国华电工程(集团)有限公司 | Method and device for recycling W and V from waste flue gas denitration catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200236A (en) * | 2015-09-22 | 2015-12-30 | 中国华电工程(集团)有限公司 | Method and device for recycling W and V from waste flue gas denitration catalyst |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee after: CHINA HUADIAN ENGINEERING CO., LTD. Patentee after: Huadian Environmental Protection System Engineering Co., Ltd. Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee before: China Huadian Engineering (Group) Co., Ltd. Patentee before: Huadian Environmental Protection System Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180922 |