CN106882776A - wet-process phosphoric acid production system and wet-process phosphoric acid production method - Google Patents
wet-process phosphoric acid production system and wet-process phosphoric acid production method Download PDFInfo
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- CN106882776A CN106882776A CN201710232901.7A CN201710232901A CN106882776A CN 106882776 A CN106882776 A CN 106882776A CN 201710232901 A CN201710232901 A CN 201710232901A CN 106882776 A CN106882776 A CN 106882776A
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
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Abstract
The present invention relates to chemical field, specifically, the invention discloses a kind of Wet-process Phosphoric Acid Production system and Wet-process Phosphoric Acid Production method.The Wet-process Phosphoric Acid Production system includes setting mineral aggregate conveying equipment, ore pulp storage tank, the dense groove of ore pulp, ore pulp head tank, extraction tank, the dense groove of slurry, phosphoric acid defecator and the phosphoric acid holding tank being sequentially communicated.By the way that the thick slurry outlet of the dense groove of slurry to be communicated in the charging aperture of thick slurry dilution trap, filtering cleaning equipment is not involved in phosphoric acid stoste and filter, the dilution slurry that only the dense device of filtering slurry is separate.Efficiently solve the problems, such as filter and associated conduit fouling and clogging.By process optimization, drastically increase production efficiency, improve utilization rate of equipment and installations, the production unit consumption of product can be reduced.The Wet-process Phosphoric Acid Production method, using above-mentioned Wet-process Phosphoric Acid Production system, so that during phosphoric acid by wet process relieving haperacidity, production efficiency is high.
Description
Technical field
The present invention relates to chemical field, in particular to a kind of Wet-process Phosphoric Acid Production system and Wet-process Phosphoric Acid Production
Method.
Background technology
Phosphorous chemical industry of the China with calcium monohydrogen phosphate and phosphorus ammonium as representative, when phosphoric acid by wet process relieving haperacidity is produced, just there is a skill always
Art problem annoyings whole industry.Filter and associated conduit fouling and clogging problem.
Fouling and clogging is mainly manifested in filter link in traditional phosphoric acid by wet process acid-making process；As filter cloth, filtering area,
The positions such as one scrubbing section, vacuum tube, vacuum tank.Analysis reason contains with main objectionable impurities (Fe, Al, Mg, K, Na) in rock phosphate in powder
Amount height is related, related to technic index, and the temperature difference is related during to filtering, related to the mechanism of filter and surface smoothness.Pass
The solution of system is：Increase clearing times intensity, change filter dependency structure, take Insulation, the stifled dirt of chemistry, adjustment
Technic index；There is alleviation phenomenon, but remission effect is not good, still has certain degree to influence production, causes downstream product quality not
Steady production cost has certain rise, loses more than gain.Last most enterprise must change high-quality original rock phosphate in powder or selection ore dressing is rich
Poly- phosphorus ore solve problem.By taking the steel gray ore deposit of Yichang, the production of Hunan weathering black patch ore deposit as an example；Their quality overall targets except
P2O5Beyond >=27%, other main objectionable impurities indexs are all beyond gold standard (Fe=3.1%, Al=2.5%, Mg=
2.1%th, K=0.41%, Na=0.46%).Except filter serious scale is blocked in product, 16 hours when serious must be clear
Reason.
The content of the invention
It is an object of the invention to provide a kind of Wet-process Phosphoric Acid Production system, it can efficiently solve phosphoric acid by wet process relieving haperacidity
During production, filter and associated conduit fouling and clogging problem.
Another object of the present invention is to provide a kind of Wet-process Phosphoric Acid Production method, when enabling to phosphoric acid by wet process relieving haperacidity,
Production efficiency is high, and availability is high.
In order to realize above-mentioned purpose of the invention, spy uses following technical scheme：
A kind of Wet-process Phosphoric Acid Production system, Wet-process Phosphoric Acid Production system includes that mineral aggregate conveying equipment, ore pulp storage tank, ore pulp are dense
Close groove, ore pulp head tank, extraction tank, the dense groove of slurry, phosphoric acid defecator, phosphoric acid holding tank, thick slurry dilution trap, filtering cleaning set
The standby and sour dense groove of return.Wherein, mineral aggregate conveying equipment, ore pulp storage tank, the dense groove of ore pulp, ore pulp head tank, extraction tank, material
Dense groove, phosphoric acid defecator and phosphoric acid holding tank is starched to be sequentially communicated.And the thick slurry outlet of the dense groove of slurry is communicated in thick
Starch the charging aperture of dilution trap；The discharging opening for returning to sour dense groove is communicated in the charging aperture of extraction tank.Return to the charging of sour dense groove
Mouth is communicated in the discharging opening of filtering cleaning equipment.
In preferred embodiments of the present invention, filtering cleaning equipment includes filter and the dense groove of washing lotion, filter
Charging aperture is communicated in the discharging opening for stating thick slurry dilution trap, and the discharging opening of filter is communicated in the charging aperture of the dense groove of washing lotion.
In preferred embodiments of the present invention, the discharging opening of filter be additionally provided with for the discharging opening for connecting filter with
Return to the first pipeline of the charging aperture of sour dense groove.
In preferred embodiments of the present invention, the discharging opening of the dense groove of washing lotion is additionally provided with for connecting the dense groove of washing lotion
The second pipe of the charging aperture of discharging opening and thick slurry dilution trap.
In preferred embodiments of the present invention, the dense groove of washing lotion includes that a Xi Qu, two Xi Qu, three wash area, the area that washes cloth, cooling
Tower and vavuum pump, a Xi Qu, two Xi Qu, three wash area, the area that washes cloth, cooling tower and vavuum pump and are sequentially communicated, Qie Yixi areas
Charging aperture is communicated in the discharging opening of filter.
In preferred embodiments of the present invention, the discharging opening of cooling tower is also communicated in the charging aperture of female tank, female tank
Discharging opening is communicated in the charging aperture in the area that washes cloth and the charging aperture of cooling tower.
In preferred embodiments of the present invention, two wash the discharging opening in area and washes between the charging aperture in area and is additionally provided with the 3rd
Pipeline；Three discharging openings for washing area and two are washed between the charging aperture in area and are additionally provided with the 4th pipeline；The discharging opening in area and three that washes cloth is washed
The 5th pipeline is additionally provided between the charging aperture in area.
In preferred embodiments of the present invention, heat exchanger is provided with the first pipeline, the 3rd pipeline and the 4th pipeline.
In preferred embodiments of the present invention, mineral aggregate conveying equipment includes muck feed bin, rock feeder, ball mill and vibration
Sieve, muck feed bin, rock feeder, ball mill and vibratory sieve are sequentially communicated, and the discharging opening of vibratory sieve is communicated in ore pulp storage tank
Charging aperture.
A kind of Wet-process Phosphoric Acid Production method, including above-mentioned Wet-process Phosphoric Acid Production system.
The beneficial effects of the invention are as follows：
A kind of Wet-process Phosphoric Acid Production system that the present invention is provided includes setting mineral aggregate conveying equipment, the ore pulp storage being sequentially communicated
The dense groove of groove, ore pulp, ore pulp head tank, extraction tank, the dense groove of slurry, phosphoric acid defecator and phosphoric acid holding tank.By that will expect
The thick slurry outlet for starching dense groove is communicated in the charging aperture of thick slurry dilution trap.So that filtering cleaning equipment is not involved in phosphoric acid stoste mistake
Filter, the dilution slurry that only the dense device of filtering slurry is separate, so as to effectively solve the life of phosphoric acid by wet process relieving haperacidity in the prior art
During product, the problem of filter and associated conduit fouling and clogging.And this Wet-process Phosphoric Acid Production system has the following advantages that：
First, solve the problems, such as filter fouling and clogging, improve production efficiency, improve utilization rate of equipment and installations, reduce production unit consumption into
This；2nd, the spoilage of filter system equipment is reduced, the service life of equipment is extended, maintenance cost has been saved, is extended
Cleaning cycle, reduces clearing times, alleviates cleaning labour intensity；3rd, with the solution of filter system fouling and clogging problem
Certainly, the substandard products mineral resources of middle-low grade can be directly used for production, can be the price difference cost that enterprise saves suitable buying high-quality mineral resources,
The dressing cost of rich poly- raw ore.Simultaneously for enterprise solves mineral resources scarcity, difficult problem is purchased, for the survival and development of enterprise is provided
Advantage.
The Wet-process Phosphoric Acid Production method that the present invention is provided, using above-mentioned Wet-process Phosphoric Acid Production system, so that wet method
During phosphoric acid relieving haperacidity, production efficiency is high.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
The equipment flowsheet schematic diagram of the Wet-process Phosphoric Acid Production system that Fig. 1 is provided for first embodiment of the invention；
The process flow diagram of the Wet-process Phosphoric Acid Production method that Fig. 2 is provided for second embodiment of the invention.
Icon：100- Wet-process Phosphoric Acid Production systems；101- thick slurry outlets；102- precipitates discharge gate；110- mineral aggregates are conveyed
Equipment；111- muck feed bins；112- rock feeders；113- ball mills；114- vibratory sieves；115- ore pulp storage tanks；116- ore pulps are dense
Groove；117- ore pulp head tanks；118- extraction tanks；The dense groove of 119- slurries；120- phosphoric acid defecators；130- phosphoric acid holding tanks；
140- thick slurry dilution traps；150- filters cleaning equipment；151- filters；The pipelines of 152- first；153- second pipes；154- the 3rd
Pipeline；The pipelines of 155- the 4th；The pipelines of 156- the 5th；The dense groove of 160- washing lotions；161- mono- washes area；162- bis- washes area；163- tri- is washed
Area；164- washes cloth area；165- cooling towers；166- vavuum pumps；170- returns to sour dense groove；180- mother's tanks；190- heat exchangers.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, or should
Orientation or position relationship that invention product is usually put when using, are for only for ease of the description present invention and simplify description, without
Be indicate or imply meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that to be limitation of the present invention.Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
Additionally, the term such as term " level ", " vertical ", " pendency " is not offered as requiring part abswolute level or pendency, and
Can be to be slightly tilted.It is not the expression structure if " level " refers to only its direction with respect to more level for " vertical "
Must be fully horizontal, and can be to be slightly tilted.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or one
The connection of body ground；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to indirect by intermediary
It is connected, can is two connections of element internal.For the ordinary skill in the art, can be with concrete condition understanding
State term concrete meaning in the present invention.
First embodiment
Fig. 1 is refer to, the present embodiment provides a kind of Wet-process Phosphoric Acid Production system 100.The Wet-process Phosphoric Acid Production system 100 is wrapped
Include the dense groove 116 of mineral aggregate conveying equipment 110, ore pulp storage tank 115, ore pulp, ore pulp head tank 117, extraction tank 118, slurry dense
Groove 119, phosphoric acid defecator 120, phosphoric acid holding tank 130, thick slurry dilution trap 140, filtering cleaning equipment 150 and return acid are dense
Groove 170.
Specifically, the discharging opening of mineral aggregate conveying equipment 110 is communicated in the charging aperture of ore pulp storage tank 115, ore pulp storage tank 115
Discharging opening is communicated in the charging aperture of the dense groove 116 of ore pulp, and the discharging opening of the dense groove 116 of ore pulp is communicated in ore pulp head tank 117
Charging aperture, the discharging opening of ore pulp head tank 117 is communicated in the charging aperture of extraction tank 118, and the discharging opening of extraction tank 118 is communicated in material
The charging aperture of dense groove 119 is starched, the discharging opening of the dense groove 119 of slurry is communicated in the charging aperture of phosphoric acid defecator 120, phosphoric acid clarification
The discharging opening of groove 120 is communicated in the charging aperture of phosphoric acid holding tank 130.Further, the dense groove 119 of slurry is additionally provided with thick slurry row
Outlet 101, thick slurry outlet 101 is communicated in the charging aperture of thick slurry dilution trap 140, and the discharging opening of thick slurry dilution trap 140 is communicated in
The charging aperture of cleaning equipment 150 is filtered, the discharging opening for filtering cleaning equipment 150 is communicated in the charging aperture for returning to sour dense groove 170,
The discharging opening for returning to sour dense groove 170 is communicated in the charging aperture of extraction tank 118.By this set so that filtering cleaning equipment
150 are not involved in the filtering of phosphoric acid stoste, the dilution slurry that only the dense device of filtering slurry is separate.If filter 151 directly connected
In extraction tank 118, then the stoste after mineral aggregate crushing, ball milling and vibratory sieve 114 are selected, filter will be directly entered
151 are filtered, and this is easy for blocking filter 151 and the pipeline related to filter 151, so as to influence whole wet method phosphorus
The production efficiency of acid production process.In the present embodiment, filter 151 is not directly communicates with extraction tank 118, so that former
Liquid, so as to the blocking of filter 151 would not also occur, drastically increases production efficiency without being directly entered filter 151
And the utilization rate of raw material.
It should be noted that on the discharging opening of connection ore pulp storage tank 115 with the pipeline of the charging aperture of the dense groove 116 of ore pulp
It is provided with delivery pump.So as to ensure successfully to be delivered to ore pulp the charging aperture of the dense groove 116 of ore pulp.In the present embodiment
In, it is preferable that liquid-solid ratio≤0.7 of the thick slurry in the dense groove 116 of ore pulp separate：1 such that it is able to be further ensured that phosphoric acid by wet process
The trouble-free operation of production system 100, effectively solves the problems, such as that filter 151 is blocked, and is greatly enhanced the efficiency of production and utilizes
Rate.It is further preferred that the volume of the dense groove 116 of ore pulp will be matched with production capacity, acid solution can either be distinguished；Also can arrange thick
Slurry is smooth, with thick slurry turnover stabilization, balances as standard.It is further preferred that the dense groove 116 of ore pulp carries out isothermal holding, so that
The radiating of Wet-process Phosphoric Acid Production system 100 can be efficiently reduced.
Fig. 1 is continued referring to, further, the top discharge gate of the dense groove 116 of above-mentioned ore pulp is additionally provided with for even
Connect the delivery pipe of the dense groove 116 of ore pulp and the charging aperture of ball mill 113.When the ore pulp entered into the dense groove 116 of ore pulp is not inconsistent
Standardization, it is impossible to which enough discharging openings from the dense bottom of groove 116 of ore pulp are delivered to when in ore pulp head tank 117, then by ore pulp from ore deposit
The direct return of discharge gate for starching the top of dense groove 116 is delivered to ball mill 113, carries out secondary processing.And then ensure that
The follow-up operation of Wet-process Phosphoric Acid Production system 100 is smoothed out.
Specifically, it is provided with valve at the top discharge gate of the dense groove 116 of ore pulp.It should be understood that the choosing of above-mentioned valve
Select and do not limit, ball valve, air pressure valve can be selected or suitable valve is selected according to the actual needs.
Further, it is additionally provided with precipitation discharge gate 102 in the bottom of phosphoric acid defecator 120.Precipitation discharge gate 102 passes through
Pipeline communication is in the charging aperture for returning to sour dense groove 170.After slurry is clarified in phosphoric acid defecator 120, groove top
The charging aperture that clarified solution continues to be fed forward to phosphoric acid holding tank 130 by pipeline.And under the precipitation of the bottom of phosphoric acid defecator 120
The slurry for coming just can return to the sour dense groove 170 of return by pipeline.
Specifically, it is provided with valve at the precipitation discharge gate 102 of bottom for returning to sour dense groove 170.It should be understood that above-mentioned
The selection of valve do not limit, ball valve, air pressure valve can be selected or suitable valve is selected according to the actual needs.
It should be understood that the setting of the position of the precipitation discharge gate 102 of above-mentioned phosphoric acid defecator 120 is not limited.Also may be used
To be arranged at the other positions of phosphoric acid defecator 120, it is not limited to be arranged at the bottom of phosphoric acid defecator 120.
It should be noted that connecting the discharging opening of above-mentioned phosphoric acid defecator 120 and the charging for returning to sour dense groove 170
Delivery pump is also equipped with the pipeline of mouth.Sour dense groove 170 is returned so as to ensure successfully to be transmitted back to precipitate slurry
Charging aperture.After slurries after precipitation are transmitted back to the sour dense groove 170 of return again, the slurries of precipitation are by returning to sour dense groove
The discharge gate of 170 bottom lands can again be transmitted back to extraction tank 118, so as to realize recycling for raw material, further increase wet
The production efficiency and utilization rate of method phosphoric acid production system 100.
From the above, the discharging opening that sour dense groove 170 is additionally provided with top clarified solution is returned, sour dense groove 170 is being returned
It is interior, it is also possible to realize the precipitation of slurries, so that discharging opening of diluter limpid slurries from the top for returning to sour dense groove 170 is straight
Connect and be delivered to phosphoric acid defecator 120.Similarly, connection herein returns to the discharging opening and phosphoric acid defecator 120 of sour dense groove 170
Valve is also equipped with the pipeline of charging aperture.Further, connection is additionally provided with the discharge outlet for returning to sour dense groove 170 to return
Return the pipeline of sour dense groove 170 and ore pulp storage tank 115.So as to be reached when the requirement for returning to the slurry in sour dense groove 170
During the requirement standard being fed directly in phosphoric acid defecator 120, then slurry is directly transmitted back to ore pulp storage tank 115.
Fig. 1 is continued referring to, further, mineral aggregate conveying equipment 110 includes muck feed bin 111, rock feeder 112, ball milling
Machine 113 and vibratory sieve 114.Wherein, muck feed bin 111, rock feeder 112, ball mill 113 and vibratory sieve 114 are sequentially communicated,
And the discharging opening of vibratory sieve 114 is communicated in the charging aperture of ore pulp storage tank 115.
When mineral aggregate is by after broken, ball milling and screening, entering into ore pulp storage tank 115, so as to follow-up technological process
Be smoothed out provide ensure.It should be noted that above-mentioned muck feed bin 111, rock feeder 112, ball mill 113 and shaking
The selection of dynamic sieve 114 is not limited, can be actually needed the suitable equipment of selection according to specific.
Fig. 1 is continued referring to, further, in the present embodiment, the dense groove 119 of slurry and thick slurry dilution trap 140 are set
Between extraction tank 118 and filtering cleaning equipment 150.Flocculant etc. can be selected to be added inside the dense groove 119 of slurry to material
Slurry carries out dense treatment.Further, the charging aperture of the dense groove 119 of slurry is communicated in extraction tank 118, the dense groove 119 of slurry
Discharging opening is communicated in phosphoric acid defecator 120.Further, it is additionally provided with thick slurry outlet in the bottom of the dense groove 119 of slurry
101, and thick slurry outlet 101 is communicated in thick slurry dilution trap 140.In this embodiment, it is preferred that, control the dense groove of slurry
Thick slurry liquid-solid ratio≤0.7 of 119 discharges:1.So as to be further ensured that the trouble-free operation of Wet-process Phosphoric Acid Production system 100, have
Effect solves the problems, such as that filter 151 is blocked, and is greatly enhanced the utilization rate of production.It is further preferred that to the dense groove 119 of slurry
Do isothermal holding such that it is able to reduce its radiating.It is further preferred that in the dense groove 119 of slurry, the temperature control of the thick slurry of discharge
System is at >=85 DEG C.It is further preferred that the volume of the dense groove 119 of slurry producing for 10 minutes for Wet-process Phosphoric Acid Production system 100
The volume of ability.
It should be understood that the thick slurry outlet 101 of the dense groove 119 of above-mentioned slurry, it is also possible to be arranged at the dense groove 119 of slurry
Other positions, are not limited to be arranged at the bottom of the dense groove 119 of slurry.
When magma is by extraction tank 118, add the solution such as sulfuric acid to extract magma in extraction tank 118, pass through
The magma of extraction continues to be fed forward, and is delivered to the dense groove 119 of slurry.By the magma of extraction in the dense groove 119 of slurry, enter
Row precipitate and separate, wherein, the clear solution on top continues to be fed forward, and is delivered to phosphoric acid defecator 120, in phosphoric acid defecator
In 120 by clarifying treatment after, continue to be fed forward, be delivered to phosphoric acid holding tank 130.The production of phosphoric acid is completed, i.e.,
Next process can be entered into.
Now, the thick slurries that precipitation is produced in the dense groove 119 of slurry, not by pipeline to phosphoric acid defecator
120.Thick slurry outlet 101 in the bottom of the dense groove 119 of slurry is provided with valve, at this point it is possible to valve is opened, slurry is dense
Thick slurries in close groove 119 are discharged from above-mentioned thick slurry outlet 101, and by pipeline to thick slurry dilution trap
140 charging aperture.
It should be understood that the selection of above-mentioned valve is not limited, ball valve, air pressure valve can be selected or according to actual need
Select suitable valve.
Further, the discharging opening of thick slurry dilution trap 140 is communicated in the charging aperture of filtering cleaning equipment 150.When from slurry
The thick slurry that the bottom of dense groove 119 excludes in the thick slurry dilution trap 140 by dilution after, by pipeline to mistake
Filter the charging aperture of cleaning equipment 150.By designing in this wise, when slurry enters into filtering cleaning equipment 150, have been obtained for
Multiple treatment, slurry now had been diluted, and the slurry after this dilution is delivered into filtering cleaning equipment
150, the problem of the blocking of filter 151 can be effectively prevented from, drastically increase production efficiency so that the utilization rate of raw material is obtained
To greatly raising, and then the cost reduction for producing, achieve great economic benefit.
Fig. 1 is continued referring to, further, filtering cleaning equipment 150 includes filter 151 and the dense groove 160 of washing lotion.
Wherein, the charging aperture of filter 151 is communicated in the discharging opening of thick slurry dilution trap 140, and the discharging opening of filter 151 is communicated in washing lotion
The charging aperture of dense groove 160.This makes it possible to the blocking for being effectively prevented from filter 151.
It should be noted that on the discharging opening of above-mentioned thick slurry dilution trap 140 with the pipeline of the charging aperture of filter 151
It is provided with delivery pump such that it is able to ensure by the slurry smooth delivery of power of dilution to filter 151.
The discharging opening of filter 151 is additionally provided with for the discharging opening for connecting filter 151 and the sour dense groove 170 of return
First pipeline 152 of charging aperture.When by filter 151 treatment after slurries, when can reach technological requirement, slurries directly from
First pipeline 152 is delivered to the sour dense groove 170 of return.Further, it is additionally provided with delivery pump on the first pipeline 152.So as to
It is enough ensure by by the slurry smooth delivery of power of filtration treatment to returning to sour dense groove 170.
Further, the dense groove 160 of washing lotion washes area 161, two and washes area 162, three and washes the area 163, area 164 that washes cloth, cold including one
But tower 165 and vavuum pump 166.Wherein, one wash area 161, two wash area 162, three wash area 163, the area 164 that washes cloth, cooling tower 165 with
And vavuum pump 166 is sequentially communicated.The charging aperture in Qie Yixi areas 161 is communicated in the discharging opening of filter 151.The dense groove 160 of washing lotion
Discharging opening be additionally provided with for connect the discharging opening of the dense groove 160 of washing lotion and the charging aperture of thick slurry dilution trap 140 second pipe
Road 153.Specifically, second pipe 153 is arranged between a discharging opening for washing area 161 and the charging aperture of thick slurry dilution trap 140.When
The cleaned slurries in area 161 are washed by one, when can reach technological requirement, slurries are directly delivered to from second pipe 153
Thick slurry dilution trap 140.Further, it is also equipped with delivery pump on second pipe 153.So as to ensure that area will be washed by one
161 cleaned slurry smooth delivery of power are to thick slurry dilution trap 140.
Further, two wash the discharging opening in area 162 and and wash between the charging aperture in area 161 and be additionally provided with the 3rd pipeline 154；
When two slurries washed after area 162 is processed reach technological requirement, it is back to one by the conveying of the 3rd pipeline 154 and washes area 161,
And the sour dense groove 170 of return is delivered to by the first pipeline 152.Likewise, the smooth outflow in order to ensure slurries, the 3rd
Delivery pump and valve are also equipped with pipeline 154.
Three discharging openings for washing area 163 and two are washed between the charging aperture in area 162 and are additionally provided with the 4th pipeline 155；When by three
The slurries washed after area 163 is processed are when reaching technological requirement, are conveyed by the 4th pipeline 155 and are back to two and wash area 162, then by the
The conveying of three pipeline 154 is back to one and washes area 161, and is delivered to the sour dense groove 170 of return by the first pipeline 152.Likewise,
In order to ensure the smooth outflow of slurries, delivery pump and valve are also equipped with the 4th pipeline 155.
The discharging opening in area 164 and three that washes cloth is washed between the charging aperture in area 163 and is additionally provided with the 5th pipeline 156.When by washing
Cloth area 164 process after slurries when reaching technological requirement, conveyed by the 5th pipeline 156 and be back to three and wash area 163, then by the
The conveying of four pipeline 155 is back to two and washes area 162, then is conveyed by the 3rd pipeline 154 and be back to one and wash area 161, and by the
One pipeline 152 is delivered to the sour dense groove 170 of return.Likewise, the smooth outflow in order to ensure slurries, on the 5th pipeline 156
It is also equipped with delivery pump and valve.
From the above, cooling tower 165 and vavuum pump 166 be disposed to ensure smoothly entering for the dense groove 160 of washing lotion
OK.Specifically the operation principle of cooling tower 165 and vavuum pump 166 is well-known to those skilled in the art, is no longer gone to live in the household of one's in-laws on getting married herein
State.
Fig. 1 is continued referring to, further, the discharging opening of cooling tower 165 is also communicated in the charging aperture of female tank 180, it is female
The discharging opening of tank 180 is communicated in the charging aperture in the area 164 that washes cloth and the charging aperture of cooling tower 165.It is dense that female water returns to washing lotion
The sour dense groove 170 of return is back to by the first pipeline 152 after groove 160, ore pulp storage tank 115 is then return to.By such
Set, female water of ore grinding is changed to filtered fluid ore grinding, realize and recycle.Specifically, in this embodiment, it is preferred that,
By filtered fluid through the preneutralization of ore pulp storage tank 115, make its pH value >=3.0.During pH value >=3.0, whole Wet-process Phosphoric Acid Production is circulated in
Corrosion of the slurries of system 100 to equipment is weaker.It is produced into so as to the service life of further protection equipment, and then reduction
This, increases economic efficiency.
Further, it is provided with heat exchanger 190 on the first pipeline 152, the 3rd pipeline 154 and the 4th pipeline 155.It is logical
Setting heat exchanger 190 is crossed, three heat exchange treatment is realized, cleaning solution gradually walks intensification.In this embodiment, it is preferred that, it is used for
The cleaning solution for diluting thick slurry is controlled at >=65 DEG C；Dilution enter into filter 151 filter when, temperature control at >=75 DEG C, most
It is low to cannot be below 70 DEG C.So as to effectively improve the filtering temperature difference of filter 151, Na, K saturation in former phosphoric acid liquid are slow down
The change of degree, reduces the speed of Na, K precipitation.So as to further improve the efficiency of production, and utilization rate.
By above-mentioned setting, all of relieving haperacidity water in the inside of Wet-process Phosphoric Acid Production system 100 is balanced so that whole
Relieving haperacidity water can focus on filter 151.By the dense groove 160 of washing lotion to thick slurry dilution trap 140, realize dense to slurry
The dilution of close groove 119.Efficiently solve the blockage problem of filter 151.In whole Wet-process Phosphoric Acid Production system 100, fill
Divide and make use of other waste heats such as waste heat, phosphoric acid waste heat, product drying waste heat and the steam of extractive reaction, relieving haperacidity is changed with water
Heat, has saved energy consumption, further increases the conversion ratio and production efficiency of production.
Second embodiment
The present embodiment provides a kind of Wet-process Phosphoric Acid Production method.Using the Wet-process Phosphoric Acid Production system in first embodiment
100 preparations for carrying out phosphoric acid.
Specific process chart refer to Fig. 2, and mineral aggregate first enters into ore pulp storage tank after crushing ball milling screening
115.Then extraction tank 118 is delivered to by the dense groove 116 of ore pulp, ore pulp head tank 117, by the dense groove 119 of slurry, one
Distinguish liquid and be delivered to phosphoric acid holding tank 130 through peroxophosphoric acid defecator 120；Remaining thick slurry is delivered to by thick slurry dilution trap 140
The sour dense groove 170 of return is delivered to after the filtering cleaning for filtering cleaning equipment 150, is recycled again.Whole production method,
Filtering cleaning equipment 150 is not involved in the filtering of phosphoric acid stoste, the dilution slurry that only the dense device of filtering slurry is separate, it is achieved thereby that
Filter is taken over, is directly changed to not by filter 151 by filter 151 by original ortho acid, and 151 filterings of filter are low dense
The rephosphorization acid of degree, the method so as to solve filtration system blocking.Also above-mentioned wet method phosphorus is caused while solving this problem
The production efficiency of acid production 100 is improved, utilization rate of equipment and installations is improved, the production unit consumption reduction of product.
Solve the problems, such as that sulphur dioxide of phosphor chemical industry long felt-phosphoric acid by wet process is given birth to by above-mentioned Wet-process Phosphoric Acid Production method
Produce relieving haperacidity filter fouling and clogging, solves the problems, such as after fouling and clogging can by (Na+K)≤0.3% in former rock phosphate in powder be represent it is miscellaneous
Matter expands to (Na+K)≤1.0%, and even more high is a little.Time quality can directly be used by above-mentioned Wet-process Phosphoric Acid Production method
Former rock phosphate in powder.Demand pressure of the market to high-quality original rock phosphate in powder can be reduced.Can more effectively using the existing former phosphorus ore of country
Resource.The ore dressing richness that is directly used without of secondary quality original rock phosphate in powder is gathered, that is, avoid environmental pollution, turn avoid energy resources
Waste.Ore deposit option more is used for enterprise provides, buying market is extended.Compared with high-quality original rock phosphate in powder, that is, meet work
Skill requirement, can save huge production cost for enterprise again.
In sum, a kind of Wet-process Phosphoric Acid Production system that the present invention is provided includes that setting the mineral aggregate conveying being sequentially communicated sets
Standby, ore pulp storage tank, the dense groove of ore pulp, ore pulp head tank, extraction tank, the dense groove of slurry, phosphoric acid defecator and phosphoric acid holding tank.
By the charging aperture that the thick slurry outlet of the dense groove of slurry is communicated in thick slurry dilution trap.So that filtering cleaning equipment is not involved in phosphorus
Sour stoste filtering, the dilution slurry that only the dense device of filtering slurry is separate, so as to effectively solve wet method phosphorus in the prior art
In sour relieving haperacidity production process, the problem of filter and associated conduit fouling and clogging.By specific process optimization, it is greatly enhanced
Production efficiency, utilization rate of equipment and installations is improve, can reduce the production unit consumption of product.
The Wet-process Phosphoric Acid Production method that the present invention is provided, using above-mentioned Wet-process Phosphoric Acid Production system, so that wet method
During phosphoric acid relieving haperacidity, production efficiency is high.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of Wet-process Phosphoric Acid Production system, it is characterised in that the Wet-process Phosphoric Acid Production system includes mineral aggregate conveying equipment, ore deposit
Slurry storage tank, the dense groove of ore pulp, ore pulp head tank, extraction tank, the dense groove of slurry, phosphoric acid defecator, phosphoric acid holding tank, thick slurry dilution
Groove, filtering cleaning equipment and the sour dense groove of return；The mineral aggregate conveying equipment, the ore pulp storage tank, the dense groove of the ore pulp,
The ore pulp head tank, the extraction tank, the dense groove of the slurry, the phosphoric acid defecator and the phosphoric acid holding tank are successively
Connection；And the thick slurry outlet of the dense groove of slurry is communicated in the charging aperture of the thick slurry dilution trap；The return acid is dense
The discharging opening of groove is communicated in the charging aperture of the extraction tank；The charging aperture for returning to sour dense groove is communicated in the filtering cleaning
The discharging opening of equipment.
2. Wet-process Phosphoric Acid Production system according to claim 1, it is characterised in that the filtering cleaning equipment includes filtering
Machine and the dense groove of washing lotion, the charging aperture of the filter are communicated in the discharging opening of the thick slurry dilution trap, the filter
Discharging opening be communicated in the charging aperture of the dense groove of the washing lotion.
3. Wet-process Phosphoric Acid Production system according to claim 2, it is characterised in that the discharging opening of the filter also sets up
There is the first pipeline for connecting the discharging opening of the filter and the charging aperture for returning to sour dense groove.
4. Wet-process Phosphoric Acid Production system according to claim 2, it is characterised in that the discharging opening of the dense groove of washing lotion is also
It is provided with for connecting the discharging opening of the dense groove of the washing lotion and the second pipe of the charging aperture of the thick slurry dilution trap.
5. Wet-process Phosphoric Acid Production system according to claim 3, it is characterised in that the dense groove of washing lotion is washed including
Area, two Xi Qu, three wash area, the area that washes cloth, cooling tower and vavuum pump, and described one washes area, described two washes area, described three washes area, institute
The area that washes cloth, the cooling tower and the vavuum pump is stated to be sequentially communicated, and described one charging aperture for washing area is communicated in filter
Discharging opening.
6. Wet-process Phosphoric Acid Production system according to claim 5, it is characterised in that the discharging opening of the cooling tower is also connected
In the charging aperture of female tank, the discharging opening of female tank is communicated in the wash cloth charging aperture in area and the entering for the cooling tower
Material mouth.
7. Wet-process Phosphoric Acid Production system according to claim 5, it is characterised in that described two wash the discharging opening in area with it is described
The 3rd pipeline is additionally provided between one charging aperture for washing area；Described three discharging openings for washing area and described two are washed between the charging aperture in area
It is additionally provided with the 4th pipeline；The discharging opening in the area that washes cloth and described three is washed between the charging aperture in area and is additionally provided with the 5th pipeline.
8. Wet-process Phosphoric Acid Production system according to claim 7, it is characterised in that first pipeline, the 3rd pipe
Heat exchanger is provided with road and the 4th pipeline.
9. Wet-process Phosphoric Acid Production system according to claim 1, it is characterised in that the mineral aggregate conveying equipment includes muck
Feed bin, rock feeder, ball mill and vibratory sieve, the muck feed bin, the rock feeder, the ball mill and the vibratory sieve
It is sequentially communicated, and the discharging opening of the vibratory sieve is communicated in the charging aperture of the ore pulp storage tank.
10. a kind of Wet-process Phosphoric Acid Production method, it is characterised in that including the phosphoric acid by wet process as described in claim any one of 1-9
Production system.
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Citations (5)
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|---|---|---|---|---|
| US6716352B1 (en) * | 1999-07-30 | 2004-04-06 | Membrane Extraction Technology Limited | Method for removing and recovering aromatic amines by using a non-porous membrane |
| CN102992290A (en) * | 2012-12-18 | 2013-03-27 | 瓮福（集团）有限责任公司 | Production device and operation method for reducing solid content of phosphoric acid |
| CN203079693U (en) * | 2013-01-23 | 2013-07-24 | 山东明瑞化工集团有限公司 | Reaction device for preparing phosphoric acid |
| CN203866038U (en) * | 2014-05-07 | 2014-10-08 | 四川蓥峰实业有限公司 | Phosphoric acid production device system |
| CN106395775A (en) * | 2016-08-31 | 2017-02-15 | 郝付勇 | Method for filtering phosphoric acid extraction slurry |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716352B1 (en) * | 1999-07-30 | 2004-04-06 | Membrane Extraction Technology Limited | Method for removing and recovering aromatic amines by using a non-porous membrane |
| CN102992290A (en) * | 2012-12-18 | 2013-03-27 | 瓮福（集团）有限责任公司 | Production device and operation method for reducing solid content of phosphoric acid |
| CN203079693U (en) * | 2013-01-23 | 2013-07-24 | 山东明瑞化工集团有限公司 | Reaction device for preparing phosphoric acid |
| CN203866038U (en) * | 2014-05-07 | 2014-10-08 | 四川蓥峰实业有限公司 | Phosphoric acid production device system |
| CN106395775A (en) * | 2016-08-31 | 2017-02-15 | 郝付勇 | Method for filtering phosphoric acid extraction slurry |
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| CN106882776B (en) | 2018-09-14 |
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