CN204125170U - A kind of phosphorous acid production by BEP device - Google Patents
A kind of phosphorous acid production by BEP device Download PDFInfo
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- CN204125170U CN204125170U CN201420554703.4U CN201420554703U CN204125170U CN 204125170 U CN204125170 U CN 204125170U CN 201420554703 U CN201420554703 U CN 201420554703U CN 204125170 U CN204125170 U CN 204125170U
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- absorption tower
- mist eliminator
- tower
- dynamic wave
- gas
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims abstract description 183
- 239000003595 mist Substances 0.000 claims abstract description 163
- 238000002485 combustion reaction Methods 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 61
- 239000006096 absorbing agent Substances 0.000 claims description 14
- 238000013022 venting Methods 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 68
- 238000005516 engineering process Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 139
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 73
- 239000007789 gas Substances 0.000 description 71
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 58
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 21
- 229920000137 polyphosphoric acid Polymers 0.000 description 20
- 239000000047 product Substances 0.000 description 17
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052698 phosphorus Inorganic materials 0.000 description 14
- 239000011574 phosphorus Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009885 systemic effect Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- AFCIMSXHQSIHQW-UHFFFAOYSA-N [O].[P] Chemical compound [O].[P] AFCIMSXHQSIHQW-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000008258 liquid foam Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02P20/10—Process efficiency
Abstract
The utility model discloses a kind of phosphorous acid production by BEP device, belong to the energy-saving Technology field of phosphorous acid production by BEP, this device comprises combustion tower, absorption tower, dynamic wave mist eliminator, gas-liquid separator, induced draft fan, combustion tower is communicated with the entrance at top, absorption tower, absorption tower is connected with dynamic wave mist eliminator, dynamic wave mist eliminator is communicated with induced draft fan by gas-liquid separator, simultaneously stability tower is connected with interchanger by absorption tower recycle pump, interchanger by pipeline communication to formation loop, absorption tower, dynamic wave mist eliminator and mist eliminator recycle pump form loop by pipeline, this device reduces the resistance of system, reduces the consumption of recycle acid and recirculated water, significantly reduces the installed capacity of system, realize energy-saving and cost-reducing and improve system capacity, have reduced investment, floor space is little, little power consumption, production cost is low, saves the feature of coal resource and water resources.
Description
Technical field
The utility model relates to a kind of phosphorous acid production by BEP device, belongs to phosphorous acid production by BEP field of energy-saving technology.
Background technology
The production technique of thermal phosphoric acid is primarily of yellow phosphorus burning (producing Vanadium Pentoxide in FLAKES with elemental phosphorous), hydration (Vanadium Pentoxide in FLAKES is absorbed into high-concentration phosphoric acid by dilute phosphoric acid), vent gas treatment (after absorbing with water or dilute phosphoric acid qualified discharge) three part compositions, its basic technology techniqueflow is: solid yellow phosphorus by heating medium (as steam, hot water, hot gas) be molten into liquid phosphor, after liquid phosphor to be transported in combustion tower atomization and air (or oxygen-rich air, or oxygen) burning, generate bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides) gas, gas containing Vanadium Pentoxide in FLAKES enters the phosphoric acid or the polyphosphoric acid that generate high density after the dilute phosphoric acid sent here through absorption tower recycle pump in absorption tower absorbs, the gas containing micro-Vanadium Pentoxide in FLAKES after hydration tower absorbs enters Venturi mist eliminator and carries out acid mist collecting, tail gas is through multiple shelves scum dredger, fiber demister to carry out after gas-liquid separation by exhaust fan to airborne release.In the existing technological process of production, hydration tower is generally the void tower absorption equipment of band shower nozzle, and its single tower specific absorption is 50%-80%, and recycle acid consumption is generally 60-120 times that produces acid amount.Also adopt two-level absorption tower further to absorb in the technique had, in two-level absorption tower, recycle acid consumption is generally 40-70 times that produces acid amount.Adopt Venturi mist eliminator, again shelves scum dredger to carry out acid mist collecting, whole production system Pressure Drop is at 7-13kPa.This technological process of production exists that systemic resistance is large, assimilated efficiency is low, recycle acid amount is large, the bulky deficiency of hydration tower, particularly Venturi mist eliminator resistance is large, void tower recycle acid amount is large, recycle pump and id-motor power configuration is caused to increase, whole Technology system energy consumes high, causes the waste of the energy.To employ new technology and new equipment reduces the needs that phosphorous acid production by BEP cost is industry development.
Adopt dynamic wave absorption tower to carry out Vanadium Pentoxide in FLAKES to absorb and after dynamic wave mist eliminator carries out acid mist collecting device, the production technology of thermal phosphoric acid is largely increased.
Summary of the invention
The purpose of this utility model is the systemic resistance reducing phosphorous acid production by BEP system, improve Vanadium Pentoxide in FLAKES specific absorption, simplification of flowsheet, reduce production system installed capacity, reduce power consumption, reduce resource consumption, while protection of the environment, realize energy-saving production thermal phosphoric acid (polyphosphoric acid), improve the overall cleanly production level of thermal phosphoric acid processing; The utility model proposes a kind of phosphorous acid production by BEP device, dynamic wave know-why combines with two step phosphorous acid production by BEP technology by this device, adopts dynamic wave absorption tower effectively to improve the specific absorption of absorption equipment, decreases the consumption of recycled phosphoric acid; Dynamic wave mist eliminator is adopted effectively to improve acid mist collecting rate, considerably reduce process system resistance, the pressure head of induced draft fan in effective reduction production system, thus significantly reduce the power of motor of induced draft fan, by absorbing and the combination of demister system, significantly reduce resistance and the device installed capacity thereof of integral production system, decrease equipment volume, materials consumption, plant area area, reduce investment.
This phosphorous acid production by BEP device comprises combustion tower 1, absorption tower 2, dynamic wave mist eliminator 3, gas-liquid separator 4, induced draft fan 5, combustion tower 1 is communicated with the entrance at top, absorption tower 2, absorption tower 2 is connected with dynamic wave mist eliminator 3, dynamic wave mist eliminator 3 is communicated with induced draft fan 5 by gas-liquid separator 4, simultaneously stability tower 2 is connected with interchanger 7 by absorption tower recycle pump 6, interchanger 7 forms loop by pipeline communication to absorption tower 2, and dynamic wave mist eliminator 3 and mist eliminator recycle pump 8 form loop by pipeline.
In described device, two-stage absorption tower 2 is set.
Two-stage dynamic wave mist eliminator 3 is set in described device.
Described absorption tower is the hollow absorption tower of dynamic wave absorption tower or built-in layer 2-4 shower nozzle.
Described dynamic wave absorption tower is made up of power wave absorber 12 and airtight spray column 13, power wave absorber is arranged on airtight spray column top, wherein power wave absorber 12 is made up of cylindrical washer 14 and Dynawave nozzle I 15, and Dynawave nozzle is placed in the middle and lower part in cylindrical washer; Airtight spray column comprises tower body 16, endless tube 17, spray nozzle 18, it is outer and be communicated with spray nozzle that endless tube is arranged at tower body, spray nozzle is evenly arranged on tower body inner upper, tower body bottom is provided with pneumatic outlet 19, interchanger 7 is communicated with Dynawave nozzle I, and the liquid exit 21 bottom tower body is communicated with interchanger 7 by absorption tower recycle pump 6.
Described cylindrical washer is outside equipped with cooling water jecket 20.
Described dynamic wave mist eliminator 3 comprises demist cylinder 22, Dynawave nozzle II 23, circulation groove 24, demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, and circulation groove top is provided with venting port 25, and mist eliminator recycle pump 8 is communicated with Dynawave nozzle II.
Described combustion tower 1 is conventional combustion tower, as the patent No. be ZL 01143443.0, ZL 201210305739.4, ZL 2,010 2 0277178.8, the byproduct steam described in ZL 2,013 2 0502892.6, ZL 201210305739.4 phosphoric furnace.
Equipment and technology step of the present utility model is: solid yellow phosphorus by heating medium (as steam, hot water, hot gas) be molten into liquid phosphor, after liquid phosphor to be transported in combustion tower 1 atomization and air (or oxygen-rich air, or oxygen) burning, generate bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides) gas, gas containing Vanadium Pentoxide in FLAKES enters absorption tower 2, phosphoric acid or the polyphosphoric acid of high density is generated after the dilute phosphoric acid sent here through absorption tower recycle pump 6 in absorption tower absorbs, gas containing micro-Vanadium Pentoxide in FLAKES enters dynamic wave mist eliminator demist cylinder 22 top, in the demist cylinder of dynamic wave mist eliminator, the shock of air-flow and liquid is carried out by Dynawave nozzle II 23 with the dilute phosphoric acid (or water) from mist eliminator recycle pump 8, strong turbulence froth zone is formed in liquid-vapo(u)r interface region, acid mist in gas is combined rapidly with dilute phosphoric acid (or water), its most of acid mist is removed in dynamic wave mist eliminator, small part acid mist is due to the effect of dynamic wave mist eliminator, its droplet enlarges markedly, removed by the gas-liquid separator 4 of follow-up setting, tail gas is disposed to air through induced draft fan 5, absorption tower and dynamic wave mist eliminator have recycle pump uninterruptedly spray into dilute phosphoric acid (or water) absorb and collecting gas in Vanadium Pentoxide in FLAKES, obtain phosphoric acid or the polyphosphoric acid of different concns.
When absorption tower is dynamic wave absorption tower, the utility model make use of the high feature of dynamic wave assimilated efficiency, strengthening absorbs Vanadium Pentoxide in FLAKES contained in gas phase, cyclic absorption airtight tower body is adopted to take out of in system while heat, again strengthen Vanadium Pentoxide in FLAKES to absorb, improve the assimilated efficiency in FU volume significantly, the spray acid amount of power wave absorber is 0.0020-0.0170 with the ratio (volume ratio) of gas, the circulation spray acid amount of airtight tower body is 10-40 times of phosphoric acid output, the consumption of recycled phosphoric acid is effectively made to reduce 30%-60%, dynamic wave absorption tower can reach 80%-99% to the specific absorption of Vanadium Pentoxide in FLAKES.According to the different demands of user to steam, the combustion tower of band energy recovery or the combustion tower of band cooling jacket can be adopted.
According to different phosphoric acid product concentration requirement, dynamic wave absorption tower and the dynamic wave mist eliminator of various combination, different progression can be adopted.The utility model can make phosphorous acid production by BEP system pressure drop control at 3-6kPa.Compared with conventional production methods, equal production-scale phosphorous acid production by BEP device, production system resistance reduces 40%-75%, absorption tower Vanadium Pentoxide in FLAKES specific absorption improves 30%-60%, production system recycle acid amount reduces 30%-60%, the installed capacity of production system motor reduces 30%-50%, and absorption tower device area reduces 30%-50%, and in exhaust emissions, phosphorus pentoxide content is only the 1/2-1/5 of former process system; There is energy-conservation, that cost is low, reduced investment, floor space are little, good in economic efficiency feature, decrease the thermal pollution to environment and emissions figure, there is good environmental benefit, Social benefit and economic benefit.Have broad application prospects in the suitability for industrialized production of thermal phosphoric acid.
The advantage that the utility model is compared with prior art had or positively effect as follows:
(1) specific absorption of Vanadium Pentoxide in FLAKES can be increased substantially, reduce production system resistance, reduce device installed capacity, save energy, reduce the quantity discharged of nuisance in tail gas, protection of the environment.
The utility model the most outstanding innovative point in phosphorous acid production by BEP field have employed dynamic wave absorption tower and dynamic wave mist eliminator; Effectively improving specific absorption and the demist rate of Vanadium Pentoxide in FLAKES in gas phase; reduce recycle acid consumption; in minimizing tail gas while emissions figure; significantly reduce production system resistance; reduce production system installed capacity; reduce energy consumption, be conducive to protection of the environment and save energy, reduce production cost.In phosphorous acid production by BEP process, have significantly energy-conservation, consumption reduction, synergy feature.
(2) significantly can reduce the equipment volume of absorption section, reduce plant area area, significantly reduce plant investment.
The utility model adopts dynamic wave absorption tower, and using dynamic wave principle and airtight tower body cyclic absorption principle, is a kind of design of innovation.Adopt dynamic wave principle to improve in unit volume while Vanadium Pentoxide in FLAKES specific absorption, shift out intrasystem heat by a small amount of recycled phosphoric acid, absorption section equipment volume is reduced, save material, reduction plant area area, reduces production equipment investment.
(3) the utility model proposes by dynamic wave mist eliminator and combination thereof, significantly reduce the harmful substance contents in outside emission, with former comparison of technology, when adopting same absorbent and demist progression, phosphorus pentoxide content in external emission is only original 1/2-1/5, has significant environmental benefit.
(4) compare with conventional process flow, production system resistance reduces 40%-75%, the Vanadium Pentoxide in FLAKES specific absorption on absorption tower improves 30%-60%, production system recycle acid consumption reduces 30%-60%, the installed capacity of production system motor reduces 30%-50%, and the utility model has obvious economic benefit, simultaneously owing to decreasing the thermal pollution of environment and reducing power consumption, also having good social benefit, is a kind of energy-saving phosphorous acid production by BEP Technology.
Accompanying drawing explanation
Fig. 1 is the utility model apparatus structure schematic diagram;
Fig. 2 is the structural representation that the utility model device adopts dynamic wave absorption tower;
Fig. 3 is the structural representation of the utility model device regular absorbent tower, 2 grades of dynamic wave mist eliminators;
Fig. 4 is the structural representation of the utility model device dynamic wave absorption tower, 2 grades of dynamic wave mist eliminators;
Fig. 5 is the structural representation on the utility model medium power ripple absorption tower;
Fig. 6 is the structural representation of the utility model medium power ripple mist eliminator;
In figure: 1-combustion tower; 2-absorption tower; 3-dynamic wave mist eliminator; 4-gas-liquid separator; 5-induced draft fan; 6-absorption tower recycle pump; 7-interchanger; 8-mist eliminator recycle pump; 9-dynamic wave absorption tower; 10-second motive force ripple mist eliminator; 11-secondary mist eliminator recycle pump; 12-power wave absorber; The airtight spray column of 13-; 14-cylindrical washer; 15-Dynawave nozzle I; 16-tower body; 17-endless tube; 18-spray nozzle; 19-pneumatic outlet; 20-cooling water jecket; 21-liquid exit; 22-demist cylinder; 23-Dynawave nozzle II; 24-circulation groove; 25-venting port.
Embodiment
The production technology embodiment of the utility model design carries out illustrating in detail, clearly and completely by reference to the accompanying drawings, and obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1: as a shown in Figure 6, this phosphorous acid production by BEP device comprises combustion tower 1, absorption tower 2, dynamic wave mist eliminator 3, gas-liquid separator 4, induced draft fan 5, combustion tower 1 is communicated with the entrance at top, absorption tower 2, absorption tower 2 is connected with dynamic wave mist eliminator 3, dynamic wave mist eliminator 3 is communicated with induced draft fan 5 by gas-liquid separator 4, simultaneously stability tower 2 is connected with interchanger 7 by absorption tower recycle pump 6, interchanger 7 forms loop by pipeline communication to absorption tower 2, and dynamic wave mist eliminator 3 and mist eliminator recycle pump 8 form loop by pipeline; Wherein absorption tower is the hollow absorption tower of 3 layers of shower nozzle, dynamic wave mist eliminator 3 comprises demist cylinder 22, Dynawave nozzle II 23, circulation groove 24, demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, circulation groove top is provided with venting port 25, and mist eliminator recycle pump 8 is communicated with Dynawave nozzle II.
During use, liquid phosphor is delivered to combustion tower 1 and generates with the oxygen combustion in air the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides), mixed gas delivery haves three layers to tool the hollow absorption tower 2 of shower nozzle, the cooled circulation dilute phosphoric acid sent here through absorption tower recycle pump 6 absorbs, gas after absorption enters dynamic wave mist eliminator 3, the dilute phosphoric acid transported through mist eliminator recycle pump 8 carries out acid mist seizure washing, and then after gas-liquid separator 4 carries out gas-liquid separation, by induced draft fan 5 qualified discharge to air.Combustion tower 1 is that band heat energy generated during combustion of yellow reclaims the specific equipment producing saturation steam, and the phosphoric acid after absorption tower 2 absorbs, is delivered to interchanger 7 by absorption tower recycle pump 6, its reaction heat is shifted out by heat-eliminating medium, through the phosphoric acid of cooling, major part recycles, and small part exports as product acid.
Produce to throw phosphorus amount 1400 kgs/hr, particular content is as follows:
Be that liquid-state industrial yellow phosphorus at 55 ~ 68 DEG C is delivered to combustion tower by temperature, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to tool and haves three layers the top, hollow absorption tower of shower nozzle under the suction of exhaust fan, the dilute phosphoric acid cyclic absorption sent here with absorption tower recycle pump, in absorption tower, produce the phosphoric acid that concentration is 85%, tail gas be transported to further dynamic wave mist eliminator carry out acid mist catch after gas-liquid separator separates, be discharged into air by induced draft fan.The dilute phosphoric acid that dynamic wave mist eliminator and gas-liquid separator are caught is delivered on request in absorption tower and is carried out absorption concentrate, the consumption of air by burning yellow phosphorus theoretical demand 1.5 times of being, i.e. 9040m
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave mist eliminator is 0.003, and namely actual spray acid amount is 27m
3/ h, absorption tower finished product phosphoric acid produces acid amount for 5160kg/h, and combustion tower can by-product industrial steam be 7.2t/h.
Embodiment 2: as Fig. 2, 5, shown in 6, this phosphorous acid production by BEP device comprises combustion tower 1, dynamic wave absorption tower 9, dynamic wave mist eliminator 3, gas-liquid separator 4, induced draft fan 5, combustion tower 1 is communicated with the entrance at top, dynamic wave absorption tower 9, dynamic wave absorption tower 9 is connected with dynamic wave mist eliminator 3, dynamic wave mist eliminator 3 is communicated with induced draft fan 5 by gas-liquid separator 4, dynamic wave absorption tower 9 is connected with interchanger 7 by absorption tower recycle pump 6 simultaneously, interchanger 7 forms loop by pipeline communication to dynamic wave absorption tower 9, dynamic wave mist eliminator 3 and mist eliminator recycle pump 8 form loop by pipeline, wherein dynamic wave absorption tower is made up of power wave absorber 12 and airtight spray column 13, power wave absorber is arranged on airtight spray column top, wherein power wave absorber 12 is made up of cylindrical washer 14 and Dynawave nozzle I 15, and Dynawave nozzle is placed in the middle and lower part in cylindrical washer, airtight spray column comprises tower body 16, endless tube 17, spray nozzle 18, it is outer and be communicated with spray nozzle that endless tube is arranged at tower body, spray nozzle is evenly arranged on tower body inner upper, tower body bottom is provided with pneumatic outlet 19, interchanger 7 is communicated with Dynawave nozzle I, and the liquid exit 21 bottom tower body is communicated with interchanger 7 by absorption tower recycle pump 6, dynamic wave mist eliminator 3 comprises demist cylinder 22, Dynawave nozzle II 23, circulation groove 24, demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, and circulation groove top is provided with venting port 25, and mist eliminator recycle pump 8 is communicated with Dynawave nozzle II.
During use, liquid phosphor is delivered to combustion tower 1 and generates with the oxygen combustion in air the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides), mixed gas delivery is in dynamic wave absorption tower 9, cooling Posterior circle dilute phosphoric acid counter current contact, rapid reaction and absorption in cylindrical washer 14 of Dynawave nozzle I 15 is delivered to absorption tower recycle pump 6, after absorbing, gas enters airtight spray column 13, contact with the phosphoric acid from spray nozzle 18, again absorb; Demist cylinder 22 top of dynamic wave mist eliminator 3 is entered from pneumatic outlet 19, with from the dilute sulphuric acid of mist eliminator recycle pump 8 or water counter current contact, gas from top to bottom, liquid from bottom to top, the gas removing most of acid mist arrives gas-liquid separator 4 through venting port 25, remove liquid foam in gas-liquid separator after, after induced draft fan 5 aspirates, be disposed to air.Combustion tower 1 is that band heat energy generated during combustion of yellow reclaims the specific equipment producing saturation steam, the recycled phosphoric acid that absorption tower recycle pump 6 is carried swaps out through interchanger 7 from dynamic wave absorption tower cooling zone heat out and is shifted out by heat-eliminating medium, and the phosphoric acid that dynamic wave absorption tower 9 produces is hot method finished product phosphoric acid or polyphosphoric acid product.
Be 500 kgs/hr produce to throw phosphorus amount, particular content is as follows:
The liquid-state industrial yellow phosphorus of temperature at 60 ~ 70 DEG C is delivered to combustion tower, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to the dilute phosphoric acid cyclic absorption sent here through absorption tower recycle pump on dynamic wave absorption tower and cools under the suction of exhaust fan, the phosphoric acid that concentration is 85% is produced in dynamic wave absorption tower, tail gas is transported to dynamic wave mist eliminator further and carries out acid mist seizure, after gas-liquid separator, be discharged into air by induced draft fan.The dilute phosphoric acid that dynamic wave mist eliminator and gas-liquid separator are caught is delivered on request in dynamic wave absorption tower and is carried out absorption concentrate.The consumption of air by burning yellow phosphorus theoretical demand 1.5 times of being, i.e. 3230Nm
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave absorption tower dynamic wave pipeline section is 0.006, and namely actual spray acid amount is 19m
3/ h, the acid of airtight spray column circulating cooling is 19m
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave mist eliminator is 0.004, and namely actual spray acid amount is 13m
3/ h, dynamic wave absorption tower finished product phosphoric acid produces acid amount for 1845kg/h, and combustion tower can by-product industrial steam be 2.46t/h.
Produce to throw phosphorus amount 1200 kgs/hr, particular content is as follows:
Temperature is that the liquid-state industrial yellow phosphorus at 55 ~ 68 DEG C is delivered to combustion tower, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to the dilute phosphoric acid cyclic absorption sent here through absorption tower recycle pump on dynamic wave absorption tower and cools under the suction of exhaust fan, in dynamic wave absorption tower, produce the phosphoric acid that concentration is 85%, tail gas be transported to further dynamic wave mist eliminator carry out acid mist catch after gas-liquid separator separates, be discharged into air by induced draft fan.The dilute phosphoric acid that dynamic wave mist eliminator and gas-liquid separator are caught is delivered on request in dynamic wave absorption tower and is carried out absorption concentrate.The consumption of air by burning yellow phosphorus theoretical demand 1.5 times of being, i.e. 7750Nm
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave absorption tower dynamic wave pipeline section is 0.005, and namely actual spray acid amount is 39m
3/ h, the acid of airtight spray column circulating cooling is 58m
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave mist eliminator is 0.003, and namely actual spray acid amount is 23m
3/ h, dynamic wave absorption tower finished product phosphoric acid produces acid amount for 4428kg/h, and combustion tower can by-product industrial steam be 5.87t/h.
Produce to throw phosphorus amount 2000 kgs/hr, particular content is as follows:
Temperature is that the liquid-state industrial yellow phosphorus at 55 ~ 68 DEG C is delivered to combustion tower, with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, the mixed gas generated containing bimolecular Vanadium Pentoxide in FLAKES is transported to dynamic wave absorption tower under the suction of exhaust fan, the dilute phosphoric acid cyclic absorption sent here through absorption tower recycle pump also cools, the phosphoric acid that concentration is 85% is produced in dynamic wave absorption tower, tail gas is transported to dynamic wave mist eliminator further and carries out acid mist seizure, after gas-liquid separator separates, be discharged into air by induced draft fan.The dilute phosphoric acid that dynamic wave mist eliminator and gas-liquid separator are caught is delivered on request in dynamic wave absorption tower and is carried out absorption concentrate.The consumption of air by burning yellow phosphorus theoretical demand 1.4 times of being, i.e. 12056Nm
3/ h, the liquid-gas ratio of dynamic wave absorption tower dynamic wave pipeline section is 0.005, and namely actual spray acid amount is 60m
3/ h, the acid of airtight spray column circulating cooling is 80m
3/ h, the liquid-gas ratio of dynamic wave mist eliminator is 0.004, and namely actual spray acid amount is 48m
3/ h, dynamic wave absorption tower finished product phosphoric acid produces acid amount for 7370kg/h, and combustion tower can by-product industrial steam be 9.61t/h.
Embodiment 3: as Fig. 3, 5, shown in 6, this phosphorous acid production by BEP device comprises combustion tower 1, absorption tower 2, dynamic wave mist eliminator 3, second motive force ripple mist eliminator 10, gas-liquid separator 4, induced draft fan 5, combustion tower 1 is communicated with the entrance at top, absorption tower 2, absorption tower 2 is connected with dynamic wave mist eliminator 3, dynamic wave mist eliminator 3 is communicated with second motive force ripple mist eliminator 10, second motive force ripple mist eliminator 10 is communicated with induced draft fan 5 by gas-liquid separator 4, simultaneously stability tower 2 is connected with interchanger 7 by absorption tower recycle pump 6, interchanger 7 forms loop by pipeline communication to absorption tower 2, dynamic wave mist eliminator 3 and mist eliminator recycle pump 8 form loop by pipeline, second motive force ripple mist eliminator 10 and secondary mist eliminator recycle pump 11 form loop by pipeline, wherein absorption tower 2 is the hollow absorption tower of 3 layers of shower nozzle, dynamic wave mist eliminator 3 comprises demist cylinder 22, Dynawave nozzle II 23, circulation groove 24, demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, circulation groove top is provided with venting port 25, and mist eliminator recycle pump 8 is communicated with the Dynawave nozzle II of dynamic wave mist eliminator 3, second motive force ripple mist eliminator 10 structure is with dynamic wave mist eliminator 3, and secondary mist eliminator recycle pump 11 is communicated with the Dynawave nozzle II of second motive force ripple mist eliminator 10.
During use, the liquid phosphor oxygen combustion be delivered in combustion tower 1 and air generates the mixed gas of bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides), mixed gas delivery to band built-in 3 layers of shower nozzle hollow absorption tower 2 in, through the circulation dilute phosphoric acid washing absorption that absorption tower recycle pump 6 is sent here; Gas after absorption enters demist cylinder 22 top of dynamic wave mist eliminator 3, with the dilute sulphuric acid counter current contact from mist eliminator recycle pump 8, gas from top to bottom, liquid from bottom to top, the gas removing most of acid mist enters second motive force ripple mist eliminator 10 through the venting port of dynamic wave mist eliminator 3, transport the dilute phosphoric acid of demist cylinder or water through secondary mist eliminator recycle pump 11 to carry out further acid mist and catch washing, be transported to gas-liquid separator 4 again and carry out gas-liquid separation, by exhaust fan 5 suction-discharge to air.Combustion tower 1 is that band heat energy generated during combustion of yellow reclaims the specific equipment producing saturation steam, and the phosphoric acid after absorption tower 2 absorbs, is delivered to interchanger 7 by absorption tower recycle pump 6, its reaction heat is shifted out by heat-eliminating medium, through the phosphoric acid of cooling, major part recycles, and small part exports as product acid.This flow process both can manufacture thermal phosphoric acid, also can produce polyphosphoric acid.The recycled phosphoric acid concentration of absorption tower, dynamic wave mist eliminator, second motive force ripple mist eliminator requires to raise step by step from rear to front according to produced phosphoric acid polyphosphoric acid product concentration.
Be 2400 kgs/hr produce to throw phosphorus amount, particular content is as follows:
Temperature is delivered to combustion tower at the liquid-state industrial yellow phosphorus of 62 ~ 75 DEG C, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to the hollow absorption tower of built-in 3 layers of shower nozzle under the suction of exhaust fan, the dilute phosphoric acid cyclic absorption sent here with absorption tower recycle pump also cools, and produces polyphosphoric acid (the folding H that concentration is 105% in absorption tower
3pO
4meter), tail gas is transported to dynamic wave mist eliminator further and carries out acid mist seizure absorption, then enters second motive force ripple mist eliminator and again carries out acid mist seizure, after gas-liquid separator separates, be discharged into air by induced draft fan.The dilute phosphoric acid that second motive force ripple mist eliminator and gas-liquid separator are caught delivers to the circulation of dynamic wave mist eliminator on request, carries out absorption concentrate and produce 105% polyphosphoric acid in the hollow absorption tower that the dilute phosphoric acid that dynamic wave mist eliminator produces delivers to built-in 3 layers of shower nozzle on request.The consumption of air by burning yellow phosphorus theoretical demand 1.8 times of being, i.e. 18600Nm
3/ h, the ratio (volume ratio) of absorption tower recycle acid and product acid is 80, and namely actual cycle spray acid amount is 304m
3/ h, the liquid-gas ratio (volume ratio) of first order kinetics ripple mist eliminator is 0.005, and namely actual spray acid amount is 93m
3/ h, the liquid-gas ratio (volume ratio) of second motive force ripple mist eliminator is 0.002, and namely actual spray acid amount is 37m
3/ h, dynamic wave absorption tower finished product polyphosphoric acid produces acid amount for 7050kg/h, and combustion tower can by-product industrial steam be 11.7t/h.
Embodiment 4: as Fig. 4, 5, shown in 6, this phosphorous acid production by BEP device comprises combustion tower 1, dynamic wave absorption tower 9, dynamic wave mist eliminator 3, second motive force ripple mist eliminator 10, gas-liquid separator 4, induced draft fan 5, combustion tower 1 is communicated with the entrance at top, dynamic wave absorption tower 9, dynamic wave absorption tower 9 is connected with dynamic wave mist eliminator 3, dynamic wave mist eliminator 3 is communicated with second motive force ripple mist eliminator 10, second motive force ripple mist eliminator 10 is communicated with induced draft fan 5 by gas-liquid separator 4, dynamic wave absorption tower 9 is connected with interchanger 7 by absorption tower recycle pump 6 simultaneously, interchanger 7 forms loop by pipeline communication to dynamic wave absorption tower 9, dynamic wave mist eliminator 3 and mist eliminator recycle pump 8 form loop by pipeline, second motive force ripple mist eliminator 10 and secondary mist eliminator recycle pump 11 form loop by pipeline, wherein dynamic wave absorption tower is made up of power wave absorber 12 and airtight spray column 13, power wave absorber is arranged on airtight spray column top, wherein power wave absorber 12 is made up of cylindrical washer 14 and Dynawave nozzle I 15, and Dynawave nozzle is placed in the middle and lower part in cylindrical washer, airtight spray column comprises tower body 16, endless tube 17, spray nozzle 18, it is outer and be communicated with spray nozzle that endless tube is arranged at tower body, spray nozzle is evenly arranged on tower body inner upper, tower body bottom is provided with pneumatic outlet 19, interchanger 7 is communicated with Dynawave nozzle I, and the liquid exit 21 bottom tower body is communicated with interchanger 7 by absorption tower recycle pump 6, dynamic wave mist eliminator 3 comprises demist cylinder 22, Dynawave nozzle II 23, circulation groove 24, demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, and circulation groove top is provided with venting port 25, and mist eliminator recycle pump 8 is communicated with Dynawave nozzle II, second motive force ripple mist eliminator 10 structure is with dynamic wave mist eliminator 3, and secondary mist eliminator recycle pump 11 is communicated with the Dynawave nozzle II of second motive force ripple mist eliminator 10.
During use, liquid phosphor is delivered to combustion tower 1 and generates with the oxygen combustion in air the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES (ten tetraphosphine oxides), mixed gas delivery is to dynamic wave absorption tower 9, cooling Posterior circle dilute phosphoric acid counter current contact, rapid reaction and absorption in cylindrical washer 14 of Dynawave nozzle I 15 is delivered to absorption tower recycle pump 6, after absorbing, gas enters airtight spray column 13, contact with the phosphoric acid from spray nozzle 18, again absorb; Demist cylinder 22 top of dynamic wave mist eliminator 3 is entered from pneumatic outlet 19, with the dilute sulphuric acid counter current contact from mist eliminator recycle pump 8, gas from top to bottom, liquid from bottom to top, the gas removing most of acid mist, through venting port, enters second motive force ripple mist eliminator 10, transports the dilute phosphoric acid of demist pipeline section or water carry out further acid mist and catch washing through secondary mist eliminator recycle pump 11, be transported to gas-liquid separator 4 again and carry out gas-liquid separation, by induced draft fan 5 suction-discharge to air.Combustion tower 1 is that band heat energy generated during combustion of yellow reclaims the specific equipment producing saturation steam, phosphoric acid after dynamic wave absorption tower 9 absorbs, interchanger 7 is delivered to by absorption tower recycle pump 6, its reaction heat is shifted out by heat-eliminating medium, through the phosphoric acid of cooling, major part recycles, and small part exports as product acid.This flow process both can manufacture thermal phosphoric acid, also can produce polyphosphoric acid.The recycled phosphoric acid concentration of dynamic wave absorption tower, dynamic wave mist eliminator, second motive force ripple mist eliminator requires to raise step by step from rear to front according to produced phosphoric acid (polyphosphoric acid) product concentration.
Produce to throw phosphorus amount 1000 kgs/hr, particular content is as follows:
Temperature is that the liquid-state industrial yellow phosphorus at 55 ~ 68 DEG C is delivered to combustion tower, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to the dilute phosphoric acid cyclic absorption sent here through absorption tower recycle pump on dynamic wave absorption tower and cools under the suction of exhaust fan, produces polyphosphoric acid (the folding H that concentration is 115% in dynamic wave absorption tower
3pO
4meter), tail gas is transported to dynamic wave mist eliminator further and carries out acid mist seizure absorption, then enters second motive force ripple mist eliminator and again carries out acid mist seizure, after gas-liquid separator separates, be discharged into air by induced draft fan.The dilute phosphoric acid that second motive force ripple mist eliminator and gas-liquid separator are caught delivers to the circulation of dynamic wave mist eliminator on request, and the dilute phosphoric acid that dynamic wave mist eliminator produces is delivered on request in dynamic wave absorption tower and carried out absorption concentrate generation polyphosphoric acid.The consumption of air by burning yellow phosphorus theoretical demand 1.6 times of being, i.e. 6890Nm
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave absorption tower dynamic wave pipeline section is 0.007, and namely actual spray acid amount is 48m
3/ h, the acid of airtight spray column circulating cooling is 20m
3/ h, the liquid-gas ratio (volume ratio) of first order kinetics ripple mist eliminator is 0.004, and namely actual spray acid amount is 28m
3/ h, the liquid-gas ratio (volume ratio) of second motive force ripple mist eliminator is 0.002, and namely actual spray acid amount is 14m
3/ h, dynamic wave absorption tower finished product polyphosphoric acid produces acid amount for 2690kg/h, and combustion tower can by-product industrial steam be 4.79t/h.
Produce to throw phosphorus amount 1500 kgs/hr, particular content is as follows:
Temperature is that the liquid-state industrial yellow phosphorus at 55 ~ 68 DEG C is delivered to combustion tower, generate the mixed gas containing bimolecular Vanadium Pentoxide in FLAKES with the Thorough combustion in combustion tower of oxygen in air after the atomization of phosphorus spray gun, mixed gas is transported to the dilute phosphoric acid cyclic absorption sent here through absorption tower recycle pump on dynamic wave absorption tower and cools under the suction of exhaust fan, produces polyphosphoric acid (the folding H that concentration is 115% in dynamic wave absorption tower
3pO
4meter), tail gas is transported to dynamic wave mist eliminator further and carries out acid mist seizure absorption, is then transported to second motive force ripple and after gas-liquid separator separates, is discharged into air except device carries out acid mist seizure by induced draft fan.The dilute phosphoric acid that second motive force ripple mist eliminator and gas-liquid separator are caught delivers to the circulation of first order kinetics ripple mist eliminator on request, and the dilute phosphoric acid that first order kinetics ripple mist eliminator produces is delivered on request in dynamic wave absorption tower and carried out absorption concentrate generation polyphosphoric acid.The consumption of air by burning yellow phosphorus theoretical demand 1.5 times of being, i.e. 9690m
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave absorption tower dynamic wave pipeline section is 0.006, and namely actual spray acid amount is 58m
3/ h, the acid of airtight spray column circulating cooling is 50m
3/ h, the liquid-gas ratio (volume ratio) of dynamic wave mist eliminator is 0.0035, and namely actual spray acid amount is 34m
3/ h, the liquid-gas ratio (volume ratio) of second motive force ripple mist eliminator is 0.003, and namely actual spray acid amount is 29m
3/ h, dynamic wave absorption tower finished product polyphosphoric acid produces acid amount for 4035kg/h, and combustion tower can by-product industrial steam be 7.36t/h.
Embodiment 5: the present embodiment apparatus structure is with embodiment 4, difference is that absorption tower is 2 grades of dynamic wave absorption towers 9, and the recycled phosphoric acid concentration of dynamic wave absorption tower, second motive force ripple absorption tower, dynamic wave mist eliminator, second motive force ripple mist eliminator requires to raise step by step from rear to front according to produced phosphoric acid (polyphosphoric acid) product concentration.
Phosphoric acid obtained by above-described embodiment or polyphosphoric acid meet country or industry standard.
The above; be only specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (7)
1. a phosphorous acid production by BEP device, it is characterized in that: it comprises combustion tower (1), absorption tower (2), dynamic wave mist eliminator (3), gas-liquid separator (4), induced draft fan (5), combustion tower (1) is communicated with the entrance at absorption tower (2) top, absorption tower (2) is connected with dynamic wave mist eliminator (3), dynamic wave mist eliminator (3) is communicated with induced draft fan (5) by gas-liquid separator (4), simultaneously stability tower (2) is connected with interchanger (7) by absorption tower recycle pump (6), interchanger (7) forms loop by pipeline communication to absorption tower (2), dynamic wave mist eliminator (3) and mist eliminator recycle pump (8) form loop by pipeline.
2. phosphorous acid production by BEP device according to claim 1, is characterized in that: arrange two-stage absorption tower (2) in this device.
3. phosphorous acid production by BEP device according to claim 1, is characterized in that: arrange two-stage dynamic wave mist eliminator (3) in this device.
4. phosphorous acid production by BEP device according to claim 1 and 2, is characterized in that: absorption tower is the hollow absorption tower of dynamic wave absorption tower or built-in layer 2-4 shower nozzle.
5. phosphorous acid production by BEP device according to claim 4, it is characterized in that: dynamic wave absorption tower is made up of power wave absorber (12) and airtight spray column (13), power wave absorber is arranged on airtight spray column top, wherein power wave absorber (12) is made up of cylindrical washer (14) and Dynawave nozzle I (15), and Dynawave nozzle is placed in the middle and lower part in cylindrical washer; Airtight spray column comprises tower body (16), endless tube (17), spray nozzle (18), it is outer and be communicated with spray nozzle that endless tube is arranged at tower body, spray nozzle is evenly arranged on tower body inner upper, tower body bottom is provided with pneumatic outlet (19), interchanger (7) is communicated with Dynawave nozzle I, and the liquid exit (21) bottom tower body is communicated with interchanger (7) by absorption tower recycle pump (6).
6. phosphorous acid production by BEP device according to claim 5, is characterized in that: cylindrical washer is outside equipped with cooling water jecket (20).
7. the phosphorous acid production by BEP device according to claim 1 or 3, it is characterized in that: dynamic wave mist eliminator (3) comprises demist cylinder (22), Dynawave nozzle II (23), circulation groove (24), demist cylinder is arranged on circulation groove top, Dynawave nozzle II is placed in the middle and lower part in demist cylinder, circulation groove top is provided with venting port (25), and mist eliminator recycle pump (8) is communicated with Dynawave nozzle II.
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| CN104261370B (en) * | 2014-09-25 | 2015-12-23 | 昆明理工大学 | A kind of phosphorous acid production by BEP device |
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| CN104261370B (en) * | 2014-09-25 | 2015-12-23 | 昆明理工大学 | A kind of phosphorous acid production by BEP device |
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