CN103922403B - The method of powdery Vanadium Pentoxide in FLAKES is produced in a kind of ammonium poly-vanadate fluidization - Google Patents
The method of powdery Vanadium Pentoxide in FLAKES is produced in a kind of ammonium poly-vanadate fluidization Download PDFInfo
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- CN103922403B CN103922403B CN201410111170.7A CN201410111170A CN103922403B CN 103922403 B CN103922403 B CN 103922403B CN 201410111170 A CN201410111170 A CN 201410111170A CN 103922403 B CN103922403 B CN 103922403B
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- fluidized
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention provides a kind of method that powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization.Described method comprises: adopt pre-fluidization system to carry out pre-fluidization treatment to ammonium poly-vanadate material, to make ammonium poly-vanadate material enter fluidized-bed agent structure with fluidized state from opening for feed, to fluidized-bed agent structure, provide flow velocity to be 120 ~ 250Nm from fluidisation gas inlet simultaneously
3/ h, pressure are the pressurized air of 60 ~ 70kPa, the temperature controlled in fluidized-bed agent structure by bar shaped or plate type member is 490 ~ 560 DEG C, the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 40 ~ 60min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.Advantage of the present invention comprises: temperature of reaction is low, is conducive to saving energy and reduce the cost; Technique can long-time continuous direct motion; Product V
2o
5grade can reach 98 national standards.
Description
Technical field
The present invention relates to fluidization Vanadium Pentoxide in FLAKES production technical field, specifically, relate to a kind of ammonium poly-vanadate fluidization and produce powdery Vanadium Pentoxide in FLAKES (V
2o
5) method.
Background technology
At present, domestic and international suitability for industrialized production powdery V
2o
5method be mainly " two-step approach " of decomposing furnace, electric furnace or rotary kiln." two-step approach " produces powdery V
2o
5temperature controls complicated, easily occurs caking phenomenon, and energy consumption is large, and heat utilization efficiency is not high.In addition, " two-step approach " is static decomposition, and decomposition obtains ammonia and hydrogen can by V
2o
5reduction, thus make V
2o
5appearance color is uneven.
Summary of the invention
The object of the invention is to solve at least one item in prior art above shortcomings.
Such as, an object of the present invention is to provide a kind of and can produces powdery Vanadium Pentoxide in FLAKES with ammonium poly-vanadate with fluidized regime and the low method of energy consumption.
The invention provides a kind of method that powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization.Described method adopts fluidized bed reaction system to realize, described fluidized bed reaction system comprises the pre-fluidization system of material and fluidizer, fluidizer comprises fluidized-bed agent structure, be arranged on the opening for feed of fluidized-bed agent structure side, be arranged on coarse particles material outlet and the fine granular materials outlet of fluidized-bed agent structure opposite side, be arranged on the gas distributor bottom fluidized-bed agent structure and fluidisation gas inlet, and the short transverse of fluidized-bed agent structure is arranged on fluidized-bed agent structure inside and has bar shaped or the plate type member of temperature controlling function, the difference of altitude of opening for feed and coarse particles material outlet is 1.20 ~ 1.30m, described method comprises step: adopt pre-fluidization system to carry out pre-fluidization treatment to ammonium poly-vanadate material, fluidized-bed agent structure is entered with fluidized state from opening for feed to make ammonium poly-vanadate material, to fluidized-bed agent structure, provide flow velocity to be 120 ~ 250Nm from fluidisation gas inlet simultaneously
3/ h, pressure are the pressurized air of 60 ~ 70kPa, the temperature controlled in fluidized-bed agent structure by bar shaped or plate type member is 490 ~ 560 DEG C, the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 40 ~ 60min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.
Compared with prior art, beneficial effect of the present invention comprises: temperature of reaction is low, is conducive to saving energy and reduce the cost; Technique can long-time continuous direct motion; The V produced
2o
5grade can reach 98 national standards.
Accompanying drawing explanation
The structural representation of the fluidizer that the method that Fig. 1 shows ammonium poly-vanadate fluidization of the present invention production powdery Vanadium Pentoxide in FLAKES uses.
Description of reference numerals is as follows:
The outlet of 1-fluidized-bed agent structure, 2-opening for feed, 3a-coarse particles material outlet, 3b-fine granular materials, 4-gas distributor, 5-fluidisation gas inlet, 6-temperature control component
Embodiment
Hereinafter, the method for ammonium poly-vanadate fluidization of the present invention production powdery Vanadium Pentoxide in FLAKES will be described in detail in conjunction with exemplary embodiment.
As shown in Figure 1, the fluidizer used in method of the present invention comprises fluidized-bed agent structure 1, opening for feed 2, coarse particles material outlet 3a, fine granular materials outlet 3b, gas distributor 4, fluidisation gas inlet 5 and temperature control component 6.Wherein, opening for feed 2 is arranged on the side (left side as in Fig. 1) of fluidized-bed agent structure 1, and opening for feed 2 is arranged along the direction tilted upward; Coarse particles material outlet 3a and fine granular materials outlet 3b is arranged on the opposite side of fluidized-bed agent structure 1, fine granular materials outlet 3b is positioned at the top of coarse particles material outlet 3a, fine granular materials outlet 3b is arranged along the direction tilted upward, and the direction under coarse particles material outlet 3a edge is tilted to is arranged.Coarse particles material outlet 3a is higher than opening for feed 2, and difference of altitude (as shown in the L in Fig. 1) is therebetween 1.20 ~ 1.30m.Gas distributor 4 and fluidisation gas inlet 5 are arranged on the bottom of fluidized-bed agent structure 1, and fluidizing agent (such as, air), successively after fluidisation gas inlet and gas distributor, enters the inside of fluidized-bed agent structure 1.Temperature control component is that to be arranged on fluidized-bed agent structure 1 along the short transverse of fluidized-bed agent structure 1 inner and have bar shaped or the plate type member of temperature controlling function, and such as, temperature control component can be tubulose.The short transverse of fluidized-bed inside arranges temperature control component (such as, baffle plate or heat transfer tube etc.) and effectively can suppress back-mixing, destroy air pocket, be conducive to carrying out fragmentation to the material of uniting, extend the residence time of material.
In one exemplary embodiment of the present invention, the method that powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization adopts fluidized bed reaction system to realize.Fluidized bed reaction system comprises the pre-fluidization system of material (such as, U-shaped feed system) and above-mentioned fluidizer.Specifically, the method that powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization is: adopt pre-fluidization system to carry out pre-fluidization treatment to ammonium poly-vanadate (being abbreviated as APV) material, to make ammonium poly-vanadate material enter fluidized-bed agent structure 1 with fluidized state from opening for feed 2, to fluidized-bed agent structure 1, provide flow velocity to be 120 ~ 250Nm from fluidisation gas inlet simultaneously
3/ h, pressure are the pressurized air of 60 ~ 70kPa, the temperature controlled in fluidized-bed agent structure 1 by bar shaped or plate type member is 490 ~ 560 DEG C, the residence time of ammonium poly-vanadate material in fluidized-bed agent structure 1 is 40 ~ 60min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet 3a and fine granular materials outlet 3b.Such as, obtain powdery Vanadium Pentoxide in FLAKES product and (comprise the V obtained from coarse particles discharge port and fine particle discharge port
2o
5particle) in, the product that granularity is greater than size corresponding to 120 mesh sieves accounts for more than 80%, and the product that granularity is less than size corresponding to 200 mesh sieves accounts for less than 20%.
In addition, in an exemplary embodiment of the present invention, compressed-air actuated temperature controls preferably to control is 200 ~ 300 DEG C.
In an exemplary embodiment of the present invention, preferably, the particle diameter of ammonium poly-vanadate material is less than the size (referred to as being less than 200 orders) corresponding to 200 mesh sieves, otherwise be not easy to realize pre-fluidization, but method of the present invention also can use particle diameter to be greater than the ammonium poly-vanadate material of size corresponding to 200 mesh sieves.In addition, pre-fluidization treatment step gas flow rate is preferably 4 ~ 8Nm
3/ h.
In the method for the invention, early stage carries out pre-fluidisation to ammonium poly-vanadate can make ammonium poly-vanadate raw material enter fluidized-bed with fluidized state, material is evenly distributed in fluidized-bed, be heated evenly fast, compared with spiral charging, ammonium poly-vanadate can be broken up by pre-fluidisation in advance, avoid material to enter fluidized-bed and also there is the situations such as bulk material, lumpy material, make material fluid effect in fluidized-bed better, be conducive to for the reaction of ammonium poly-vanadate material in fluidized-bed agent structure provides good environment and atmosphere; In addition, be 1.20 ~ 1.30m by the difference of altitude of opening for feed and coarse particles material outlet, direct impact is played on the residence time of ammonium poly-vanadate material in fluidized-bed, also remote effect are played to the flow of fluidizing agent in fluidized-bed, flow velocity, pressure, thus be conducive to Reaction time shorten, reduce fluidized-bed reaction temperature, reduce energy consumption, environment protection is played a good role; In addition, the factor such as flow velocity, flow, pressure of residence time of material, fluidized-bed reaction temperature, fluidizing agent influences each other, and can be finally technique long-time continuous of the present invention direct motion; In addition can obtain that to reach in GB GB3283-87 grade be the V of 98%
2o
5the powder Vanadium Pentoxide in FLAKES of the requirement of (referred to as 98 national standards).
Compared with prior art, the beneficial effect of method of the present invention comprises: temperature of reaction is low, is conducive to saving energy and reduce the cost; Technique can long-time continuous direct motion; The V produced
2o
5grade can reach 98 national standards.
Below in conjunction with concrete example, exemplary embodiment of the present invention is described.
Example 1
The difference of altitude arranging opening for feed and coarse particles outlet is 1.21m.
The granularity of ammonium poly-vanadate material is less than 200 orders.Adopt U valve feed system to carry out pre-fluidization treatment to ammonium poly-vanadate material, before entering fluidized-bed, be in fluidized state to make ammonium poly-vanadate material.The compressed-air actuated flow velocity controlling to enter from fluidisation gas inlet fluidized-bed agent structure is 160 ± 10Nm
3/ h, pressure are 62 ± 2kPa.The temperature controlled in fluidized-bed agent structure by temperature control component is 520 ± 5 DEG C, and the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 50 ± 5min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.Obtain in powdery Vanadium Pentoxide in FLAKES product, the product that granularity is greater than size corresponding to 120 mesh sieves accounts for about 82%, and the product that granularity is less than size corresponding to 200 mesh sieves accounts for about 16%.Gained Vanadium Pentoxide in FLAKES V
2o
5grade is 98.2%, meets the requirement of 98 national standards.
Example 2
The difference of altitude arranging opening for feed and coarse particles outlet is 1.24m.
The granularity of ammonium poly-vanadate material is for being less than 200 orders.Adopt U valve feed system to carry out pre-fluidization treatment to ammonium poly-vanadate material, before entering fluidized-bed, be in fluidized state to make ammonium poly-vanadate material.The compressed-air actuated flow velocity controlling to enter from fluidisation gas inlet fluidized-bed agent structure is 220 ± 10Nm
3/ h, pressure are 68 ± 2kPa.The temperature controlled in fluidized-bed agent structure by temperature control component is 500 ± 5 DEG C, and the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 45 ± 5min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.Obtain in powdery Vanadium Pentoxide in FLAKES product, the product that granularity is greater than size corresponding to 120 mesh sieves accounts for about 85%, and the product that granularity is less than size corresponding to 200 mesh sieves accounts for about 13%.Gained Vanadium Pentoxide in FLAKES V
2o
5grade can reach 98.3%, meets 98 national standards.
Example 3
The difference of altitude arranging opening for feed and coarse particles outlet is 1.30m.
The granularity of ammonium poly-vanadate material is for being less than 200 orders.Adopt U valve feed system with flow velocity for 4 ± 1Nm
3the gas of/h carries out pre-fluidization treatment to ammonium poly-vanadate material, is in fluidized state to make ammonium poly-vanadate material before entering fluidized-bed.The compressed-air actuated flow velocity controlling to enter from fluidisation gas inlet fluidized-bed agent structure is 200 ± 10Nm
3/ h, pressure are 65 ± 2kPa, temperature is 220 ± 5 DEG C.The temperature controlled in fluidized-bed agent structure by temperature control component is 530 ± 5 DEG C, and the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 55 ± 5min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.Obtain in powdery Vanadium Pentoxide in FLAKES product, the product that granularity is greater than size corresponding to 120 mesh sieves accounts for about 95%, and the product that granularity is less than size corresponding to 200 mesh sieves accounts for about 4%.Gained Vanadium Pentoxide in FLAKES V
2o
5grade can reach 98.4%, meets 98 national standards.
Example 4
The difference of altitude arranging opening for feed and coarse particles outlet is 1.25m.
The granularity of ammonium poly-vanadate material is for being less than 200 orders.Adopt U valve feed system with flow velocity for 6 ± 1Nm
3the gas of/h carries out pre-fluidization treatment to ammonium poly-vanadate material, is in fluidized state to make ammonium poly-vanadate material before entering fluidized-bed.The compressed-air actuated flow velocity controlling to enter from fluidisation gas inlet fluidized-bed agent structure is 220 ± 10Nm
3/ h, pressure are 65 ± 2kPa, temperature is 280 ± 5 DEG C.The temperature controlled in fluidized-bed agent structure by temperature control component is 500 ± 5 DEG C, and the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 50 ± 5min, obtains powdery Vanadium Pentoxide in FLAKES from coarse particles material outlet and fine granular materials outlet.Obtain in powdery Vanadium Pentoxide in FLAKES product, the product that granularity is greater than size corresponding to 120 mesh sieves accounts for about 90%, and the product that granularity is less than size corresponding to 200 mesh sieves accounts for about 9%.Gained Vanadium Pentoxide in FLAKES V
2o
5grade can reach 98.0%, meets 98 national standards.
In sum, the inventive method has technique and is simple and easy to the advantage such as use, equipment requirements is low, easy to operate, wide adaptability, cost are low, product purity is high, epigranular, energy consumption are low, environmental protection, has good Social benefit and economic benefit.
Although describe the present invention with exemplary embodiment by reference to the accompanying drawings above, those of ordinary skill in the art should be clear, when not departing from the spirit and scope of claim, can carry out various amendment to above-described embodiment.
Claims (3)
1. the method for an ammonium poly-vanadate fluidization production powdery Vanadium Pentoxide in FLAKES, it is characterized in that, described method adopts fluidized bed reaction system to realize, described fluidized bed reaction system comprises the pre-fluidization system of material and fluidizer, fluidizer comprises fluidized-bed agent structure, be arranged on the opening for feed of fluidized-bed agent structure side, be arranged on coarse particles material outlet and the fine granular materials outlet of fluidized-bed agent structure opposite side, be arranged on the gas distributor bottom fluidized-bed agent structure and fluidisation gas inlet, and the short transverse of fluidized-bed agent structure is arranged on fluidized-bed agent structure inside and has bar shaped or the plate type member of temperature controlling function, the difference of altitude of opening for feed and coarse particles material outlet is 1.20 ~ 1.30m, described method comprises step: adopt pre-fluidization system to carry out pre-fluidization treatment to ammonium poly-vanadate material, fluidized-bed agent structure is entered with fluidized state from opening for feed to make ammonium poly-vanadate material, to fluidized-bed agent structure, provide flow velocity to be 120 ~ 250Nm from fluidisation gas inlet simultaneously
3/ h, pressure are the pressurized air of 60 ~ 70kPa, the temperature controlled in fluidized-bed agent structure by bar shaped or plate type member is 490 ~ 560 DEG C, the residence time of ammonium poly-vanadate material in fluidized-bed agent structure is 40 ~ 60min, powdery Vanadium Pentoxide in FLAKES is obtained from coarse particles material outlet and fine granular materials outlet, wherein, the particle diameter of described ammonium poly-vanadate material is less than the size corresponding to 200 mesh sieves, and described pre-fluidization treatment step gas flow rate is 4 ~ 8Nm
3/ h.
2. the method for powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization according to claim 1, it is characterized in that, described compressed-air actuated temperature controls to be 200 ~ 300 DEG C.
3. the method for powdery Vanadium Pentoxide in FLAKES is produced in ammonium poly-vanadate fluidization according to claim 1, it is characterized in that, described method also comprises gas that adopt fine granular materials outlet discharge, that pass through process of gathering dust and carrys out pre-hot compressed air.
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| CN105984899B (en) * | 2015-01-30 | 2017-05-17 | 中国科学院过程工程研究所 | System and method for purifying vanadium pentoxide |
| CN105984897B (en) | 2015-01-30 | 2017-05-17 | 中国科学院过程工程研究所 | System and method for producing high-purity vanadium pentoxide powder |
| CN105984900B (en) * | 2015-01-30 | 2017-06-13 | 中国科学院过程工程研究所 | A kind of system and method for preparing high purity vanadic anhydride powder |
| CN105984896B (en) * | 2015-01-30 | 2017-06-13 | 中国科学院过程工程研究所 | A kind of purification prepares the system and method for high purity vanadic anhydride powder |
| CN111498835A (en) * | 2020-04-27 | 2020-08-07 | 内蒙古骏成新能源科技有限公司 | Horizontal fluidizing device for gas-phase purification of carbon nano tube and fluidizing purification method |
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