CN203048603U - Device for producing industrial-scale diammonium phosphate by using wet-process phosphoric acid - Google Patents
Device for producing industrial-scale diammonium phosphate by using wet-process phosphoric acid Download PDFInfo
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- CN203048603U CN203048603U CN 201320017901 CN201320017901U CN203048603U CN 203048603 U CN203048603 U CN 203048603U CN 201320017901 CN201320017901 CN 201320017901 CN 201320017901 U CN201320017901 U CN 201320017901U CN 203048603 U CN203048603 U CN 203048603U
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Abstract
The utility model discloses a device for producing industrial-scale diammonium phosphate by using wet-process phosphoric acid. The device is formed by mainly communicating a phosphoric acid storage tank, a phosphoric acid supply pump, an ammonium tank, an ammonium supply pump, a tubular reactor, a primary neutralizing tank, a primary neutralizing circulation pump, a primary neutralizing centrifuge, a desulfurizing tank, a desulfurizing slurry pump, a desulfurizing centrifuge, a secondary neutralizing and purifying tank, a secondary neutralizing and purifying circulating pump, a secondary neutralizing and purifying centrifuge, an accurate adjusting circulation pump, a single-effect flash chamber, a single-effect circulating pump, a dual-effect flash chamber, a dual-effect circulating pump, a material passing pump, a cooling crystallization tank, a buffering tank, a finished-product centrifuge, a mother liquor tank and a mother liquid pump to one another. According to the device for producing the industrial-scale diammonium phosphate, the defect of producing the diammonium phosphate by using a hot-process acid or purified acid is overcome, and the stability of the quality of the diammonium phosphate product is ensured. Secondary steam generated by the single-effect flash chamber in the production process can be recycled, so that the energy consumption and the production cost are reduced; and meanwhile, the environmental pollution is reduced and favorable social and economic benefits are achieved.
Description
Technical field
The utility model belongs to the phosphorus chemical product preparing technical field, relates to a kind of device of producing industrial grade diammonium phosphate from wet-process phosphoric acid.
Background technology
Along with the progress of society, industrial or agricultural has obtained the development of advancing by leaps and bounds, and safety and environmental consciousness have had further raising.The demand of PHOSPHORIC ACID TECH.GRADE two ammoniums is also increasing, and PHOSPHORIC ACID TECH.GRADE two ammoniums are as a kind of composite fertilizer of containing nitrogen and phosphorus on the agricultural, and will have good market outlook will.It is used generally all is according to the different soil type in various places and the formulated chemical fertilizer of fertilization rule science of Different Crop by agriculture skill department, really realized special fertile special-purpose, effect is obvious, and generally speaking, nutrient can not occur and too much or very little lose the fertility balance.Therefore, the utilization ratio of drip irrigation special fertilizer is quite high, and the general chemical fertilizer of comparable usefulness improves 10～15% utilization ratio.Increase the output of farm crop, improved quality of agricultural product, improved planting benefit.Adjustment along with agricultural structure, agriculture production particularly productions such as precision agriculture, vegetables, flowers develops to intensive, high benefit, hi-tech direction, in a country that lack of water is serious, face the difficulty of lack of water, the popularization water-saving agriculture is imperative, drip irrigation trend in the agriculture production occurs, and drip irrigation special fertilizer is complied with the new type chemical fertilizer kind of this development just.Secondly, high-quality diammonium phosphate also is widely used in medicine and food aspect.
According to the needs in market, the production of PHOSPHORIC ACID TECH.GRADE two ammoniums also more and more obtains paying attention to, but the production of PHOSPHORIC ACID TECH.GRADE two ammoniums in the prior art generally all is to adopt thermal phosphoric acid or purifying phosphoric acid technology.Adopt aforesaid method production manufacture level diammonium phosphate, secondary steam fails to obtain fine recycling in process of production, therefore has the cost height, the energy consumption height, and pollution waits not enough greatly.Though there is part producer to adopt wet method phosphoric acid manufacture process, there is certain deficiency in the removal of impurities process, metal content height in the product, along with the variation of phosphoric acid quality, PHOSPHORIC ACID TECH.GRADE two ammonium quality producies are difficult to guarantee.This device can solve hot method acid or purify sour shortcoming and can also overcome problems such as wet process acid unstable product quality.
The utility model content
For addressing the above problem, the utility model provides a kind of device of producing industrial grade diammonium phosphate from wet-process phosphoric acid, by this device production diammonium phosphate, reduces production costs greatly, reduces environmental pollution, makes the diammonium phosphate product quality can obtain fine assurance simultaneously.
The utility model is achieved by following technical solution.
A kind of device of producing industrial grade diammonium phosphate from wet-process phosphoric acid is mainly by the phosphoric acid storage tank, phosphoric acid is for sour pump, the ammonia jar, for ammonia pump, tubular reactor, a neutralizing well, once and recycle pump, once and whizzer, desulfurizer, the desulfurization shurry pump, the desulfuration centrifugal machine, in the secondary and purification tank, in the secondary and the decontamination cycle pump, in the secondary and clarifying centrifuge, the accurate adjustment circulation groove, one imitates flashing chamber, one imitates recycle pump, two imitate flashing chamber, two imitate recycle pump, the punishment in advance pump, the crystallisation by cooling groove, dashpot, the finished product whizzer, mother liquor tank, the mother liquor pump formation that is interconnected;
The liquid outlet of described phosphoric acid tank bottom links to each other with the import of phosphoric acid for sour pump, and phosphoric acid is connected with the tubular reactor import for sour pump outlet, and the outlet of ammonia jar is connected with the import that supplies ammonia pump, supplies the outlet of ammonia pump to be connected with the import of tubular reactor;
The outlet of described tubular reactor links to each other with a neutralizing well, the following liquid pipe of a neutralizing well with once in link to each other with inlet of circulating pump, be communicated with the formation recycle system with the circulation fluid import of a neutralizing well with circulating-pump outlet once, once with outlet of circulating pump with once in link to each other with the import of whizzer, link to each other with the fluid inlet at desulfurizer top with the liquid outlet of whizzer once, the liquid outlet of desulfurizer links to each other with the import of desulfurization shurry pump, and the opening for feed at desulfurizer top is communicated with the sweetening agent warehouse;
Described desulfurization slip pump outlet links to each other with the opening for feed of desulfuration centrifugal machine, the liquid outlet of desulfuration centrifugal machine links to each other with the fluid inlet of purification tank in doctor solution Receiving bin and secondary, link to each other with the import of decontamination cycle in the secondary with in the tremie pipe of purification tank and the secondary, in the secondary and in outlet of circulating pump and the secondary and the clarifying centrifuge opening for feed be connected, the liquid outlet with clarifying centrifuge in the secondary is connected with the accurate adjustment circulation groove through the scavenging solution Receiving bin;
The fluid inlet that the following liquid pipe of described accurate adjustment circulation groove is imitated flashing chamber through decontamination cycle pump and links to each other, and a feed opening and of imitating flashing chamber is imitated inlet of circulating pump and linked to each other, the effect outlet of circulating pump formation recycle system that communicates with the circulation fluid import of an effect flashing chamber;
A described effect outlet of circulating pump pipe and two is imitated inlet of circulating pump and is linked to each other, and two imitate outlet of circulating pump links to each other with the two circulation fluid imports of imitating flashing chambers, and the following liquid pipes of two effect flashing chambers and two effect inlet of circulating pump link to each other and form the recycle system;
Described two imitate outlet of circulating pump links to each other with the import of punishment in advance pump, the punishment in advance pump outlet links to each other with the opening for feed on crystallisation by cooling groove top, the feed opening of crystallisation by cooling groove links to each other with the opening for feed of dashpot, the feed opening of dashpot links to each other with the opening for feed of finished product whizzer, the liquid outlet of finished product whizzer links to each other with the fluid inlet of mother liquor tank, the discharge port of mother liquor tank links to each other with the import of mother liquor pump, and mother liquor pump outlet and imitates recycle pump and two effect inlet of circulating pump link to each other.
A described effect flashing chamber and one is imitated and is communicated with an effect well heater between the recycle pump, and two effect flashing chambers and two are imitated and are communicated with two effect well heaters between the recycle pumps.Can make one to imitate slip in the flashing chamber and imitate under the effect of recycle pump one and imitate the well heater internal heating one like this, two imitate slips in the flashing chambers imitates under the effect of recycle pumps two and imitates the well heater internal heating two.
Described one gaseous phase outlet of imitating the flashing chamber top is communicated with the inlet mouth that two effect well heaters are inserted in the back with the gaseous phase outlet on a neutralizing well top.Entering two after one secondary steam of imitating the secondary steam on flashing chamber top and a neutralizing well top is merged imitates in the well heaters and heats.
The gaseous phase outlet on the top of described accurate adjustment circulation groove is communicated with tail gas washing tower, discharge port is arranged at the bottom of tail gas washing tower, discharge port is communicated with cleaning circulation pump, and the outlet pipe of cleaning circulation pump is connected with the cycles of washing liquid import of tail gas washing tower middle and upper part and forms a circulation cleaning system.
The solid phase outlet of described finished product whizzer is communicated with drying machine, and the outlet of drying machine is communicated with product conveying belt, and the outlet of product conveying belt is communicated with chapelet, and the outlet of chapelet is communicated with the packing storehouse.
Described two imitate flashing chamber top gaseous phase outlet is communicated with condenser, and the downtake of condenser is communicated with liquid seal trough, and liquid seal trough is through being communicated with the water-in of cooling tower with recycle pump.
Described once in and the outlet of the solid phase of whizzer be communicated with the primary slag conveying belt.
The solid phase outlet of described desulfuration centrifugal machine is communicated with the desulfurization slag conveying belt.
Solid phase outlet with clarifying centrifuge in the described secondary is communicated with purification slag conveying belt.
Opening for feed with purification tank in the described secondary is communicated with the ammonium sulfide transferpump, and the import of ammonium sulfide transferpump is communicated with the ammonium sulfide storage tank.
The beneficial effects of the utility model are:
Compared with prior art, adopt the device of producing industrial grade diammonium phosphate from wet-process phosphoric acid described in the utility model, overcome the deficiency that adopts hot method acid or purify sour production diammonium phosphate, guaranteed the diammonium phosphate product quality of stability.Adopt the utility model manufacture level diammonium phosphate to have the following advantages:
(1) in the PHOSPHORIC ACID TECH.GRADE two ammonium production processes, the filter residue after the neutralization can be used for the production of fertilizer grade phosphorus ammonium, purifies slag and returns the crystal system recycle and reclaim, no waste residue, discharging of waste liquid for extraction metal, mother liquor.
(2) secondary steam of the utility model neutralizing well and an effect flashing chamber generation can all be recycled, and energy consumption is low.
(3) the used phosphoric acid of the utility model all is that phosphoric acid by wet process and thermal phosphoric acid are compared, and production cost is low, less energy consumption, and environmental pollution is little, has fine society and economic benefit.
(4) adopt device manufacture level diammonium phosphate technical process described in the utility model short, low equipment investment.
Description of drawings
Fig. 1 is the apparatus structure synoptic diagram of the utility model producing industrial grade diammonium phosphate from wet-process phosphoric acid.
Among the figure: 1-phosphoric acid storage tank, 2-phosphoric acid is for sour pump, 3-ammonia jar, 4-is for ammonia pump, 5-tubular reactor, neutralizing well of 6-, 7-once in and recycle pump, 8-once in and whizzer, 9-primary slag conveying belt, the 10-desulfurizer, 11-sweetening agent warehouse, 12-desulfurization shurry pump, 13-desulfuration centrifugal machine, 14-desulfurization slag conveying belt is in the 15-secondary and purification tank, in the 16-secondary and the decontamination cycle pump, 17-ammonium sulfide storage tank, 18-ammonium sulfide transferpump, in the 19-secondary and clarifying centrifuge, 20-purifies slag conveying belt, 21-accurate adjustment circulation groove, 22-decontamination cycle pump, the 23-tail gas washing tower, the 24-cleaning circulation pump, 25-one is imitated flashing chamber, and 26-one is imitated recycle pump, 27-one is imitated well heater, 28-two is imitated flashing chamber, and 29-two is imitated recycle pump, and 30-two is imitated well heater, 31-punishment in advance pump, 32-crystallisation by cooling groove, 33-dashpot, 34-finished product whizzer, the 35-mother liquor tank, 36-mother liquor pump, 37-drying machine, 38-product conveying belt, the 39-chapelet, the 40-finished bin, 41-condenser, 42-liquid seal trough, the 43-recycle pump, the 44-cooling tower, 45-doctor solution Receiving bin, 46-scavenging solution Receiving bin.
Embodiment
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but that claimed scope is not limited to is described.
As shown in Figure 1, the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid described in the utility model is mainly by phosphoric acid storage tank 1, phosphoric acid is for sour pump 2, ammonia jar 3, for ammonia pump 4, tubular reactor 5, a neutralizing well 6, once and recycle pump 7, once and whizzer 8, desulfurizer 10, desulfurization shurry pump 12, desulfuration centrifugal machine 13, in the secondary and purification tank 15, in the secondary and decontamination cycle pump 16, in the secondary and clarifying centrifuge 19, accurate adjustment circulation groove 21, one imitates flashing chamber 25, one imitates recycle pump 26, two imitate flashing chamber 28, two imitate recycle pump 29, punishment in advance pump 31, crystallisation by cooling groove 32, dashpot 33, finished product whizzer 34, mother liquor tank 35, mother liquor pump 36 formation that is interconnected;
The liquid outlet of described phosphoric acid storage tank 1 bottom links to each other with the import of phosphoric acid for sour pump 2, phosphoric acid is connected with tubular reactor 5 imports for the outlet of sour pump 2, the outlet of ammonia jar 3 is connected with the import that supplies ammonia pump 4, supplies the outlet of ammonia pump 4 to be connected with the import of tubular reactor 5;
The outlet of described tubular reactor 5 links to each other with a neutralizing well 6, the following liquid pipe of a neutralizing well 6 with once in link to each other with the import of recycle pump 7,7 outlets are communicated with the formation recycle system with the circulation fluid import of a neutralizing well 6 with recycle pump once, once with the outlet of recycle pump 7 with once in link to each other with the import of whizzer 8, link to each other with the fluid inlet at desulfurizer 10 tops with the liquid outlet of whizzer 8 once, the liquid outlet of desulfurizer 10 links to each other with the import of desulfurization shurry pump 12, and the opening for feed at desulfurizer 10 tops is communicated with sweetening agent warehouse 11;
The outlet of described desulfurization shurry pump 12 links to each other with the opening for feed of desulfuration centrifugal machine 13, the liquid outlet of desulfuration centrifugal machine 13 links to each other with the fluid inlet of purification tank 15 in doctor solution Receiving bin 45 and secondary, link to each other with the import of decontamination cycle 16 in the secondary with in the tremie pipe of purification tank 15 and the secondary, in the secondary and in the outlet of recycle pump 16 and the secondary and clarifying centrifuge 19 opening for feeds be connected, the liquid outlet with clarifying centrifuge 19 in the secondary is connected with accurate adjustment circulation groove 21 through scavenging solution Receiving bin 46;
The following liquid pipe of described accurate adjustment circulation groove 21 links to each other with a fluid inlet of imitating flashing chamber 25 through decontamination cycle pump 22, one feed opening of imitating flashing chamber 25 links to each other with an import of imitating recycle pump 26, an outlet of the imitating recycle pump 26 formation recycle system that communicates with the circulation fluid import of an effect flashing chamber 25;
Described one outlet pipe of imitating recycle pump 26 links to each other with two imports of imitating recycle pump 29, and two outlets of imitating recycle pump 29 link to each other with the two circulation fluid imports of imitating flashing chamber 28, and the two following liquid pipes of imitating flashing chamber 28 link to each other with two imports of imitating recycle pump 29 and form the recycle system;
Described two outlets of imitating recycle pump 29 link to each other with the import of punishment in advance pump 31, the outlet of punishment in advance pump 31 links to each other with the opening for feed on crystallisation by cooling groove 32 tops, the feed opening of crystallisation by cooling groove 32 links to each other with the opening for feed of dashpot 33, the feed opening of dashpot 33 links to each other with the opening for feed of finished product whizzer 34, the liquid outlet of finished product whizzer 34 links to each other with the fluid inlet of mother liquor tank 35, the discharge port of mother liquor tank 35 links to each other with the import of mother liquor pump 36, and the outlet of mother liquor pump 36 and is imitated recycle pump 26 and linked to each other with two imports of imitating recycle pump 29.
A described effect flashing chamber 25 and one is imitated to be communicated with between the recycle pump 26 between an effect well heater 27, two effect flashing chambers 28 and the two effect recycle pumps 29 and is communicated with two effect well heaters 30.Make one to imitate slips in the flashing chamber 25 and imitate under the effect of recycle pump 26 one and imitate well heater 27 internal heating one, two imitate slips in the flashing chambers 28 imitates under the effect of recycle pumps 29 two and imitates well heaters 30 internal heating two.
Described one gaseous phase outlet of imitating flashing chamber 25 tops is communicated with the inlet mouth that two effect well heaters 30 are inserted in the back with the gaseous phase outlet on neutralizing well 6 tops.Entering two after one secondary steam of imitating the secondary steam on flashing chamber 25 tops and neutralizing well 6 tops is merged imitates in the well heaters 30 and heats.
The gaseous phase outlet on the top of described accurate adjustment circulation groove 21 is communicated with tail gas washing tower 23, discharge port is arranged at the bottom of tail gas washing tower 23, discharge port is communicated with cleaning circulation pump 24, and the outlet pipe of cleaning circulation pump 24 is connected with the cycles of washing liquid import of tail gas washing tower 23 middle and upper parts and forms a circulation cleaning system.
The solid phase outlet of described finished product whizzer 34 is communicated with drying machine 37, and the outlet of drying machine 37 is communicated with product conveying belt 38, and the outlet of product conveying belt 38 is communicated with chapelet 39, and the outlet of chapelet 39 is communicated with packing storehouse 40.
Described two imitate flashing chamber 28 top gaseous phase outlets is communicated with condenser 41, and the downtake of condenser 41 is communicated with liquid seal trough 42, and liquid seal trough 42 is through being communicated with the water-in of recycle pump 43 with cooling tower 44.
Described once in and the outlet of the solid phase of whizzer 8 be communicated with primary slag conveying belt 9.
The solid phase outlet of described desulfuration centrifugal machine 13 is communicated with desulfurization slag conveying belt 14.
Solid phase outlet with clarifying centrifuge 19 in the described secondary is communicated with purification slag conveying belt 20.
Opening for feed with purification tank 15 in the described secondary is communicated with ammonium sulfide transferpump 18, and the import of ammonium sulfide transferpump 18 is communicated with ammonium sulfide storage tank 17.
It is as follows to further specify concrete implementation step of the present utility model below in conjunction with Fig. 1:
Step 1: the phosphoric acid in the phosphoric acid storage tank 1 enters in the tubular reactor 5 for sour pump 2 through peroxophosphoric acid, ammonia reacts through entering the tubular reactor 5 for ammonia pump 4 with phosphoric acid one from phosphoric acid storage tank 1 from ammonia jar 3, phosphoric acid and the ammonia slip behind tubular reactor 5 internal reactions enters in neutralizing well 6, circulate in once and under the effect of recycle pump 7 and mix, the slip that mixes from once and the outlet of recycle pump 7 enter once in and in the whizzer 8, enter the fertilizer system with slag through primary slag conveying belt 9 in the centrifugal back and produce fertilizer, filtrate enters desulfurizer 10 sweetening agents interior and from sweetening agent warehouse 11 and reacts under stirring state, it is centrifugal that slip after reaction is finished enters desulfuration centrifugal machine 13 through desulfurization shurry pump 12, centrifugal slag is delivered to special stockyard with desulfurization slag conveying belt 14, filtrate enter enter in the secondary after doctor solution Receiving bin 45 buffering and purification tank 15 in, with from the ammonium sulfide of ammonium sulfide storage tank 17 secondary and in the purification tank 15 with ammonia and slip in and purify and react.Slip after completely reacted enter in the secondary and clarifying centrifuge 19 centrifugal, the filtrate after centrifugal enters in the scavenging solution Receiving bin 46, the scavenging solution that comes out in the scavenging solution Receiving bin 46 enters in the accurate adjustment circulation groove 21, slag refers to special stockyard with purifying 20 conveyings of slag conveying belt.
Step 2: purify good filtrate and enter one from the outlet of decontamination cycle pump 22 and imitate in the flashing chamber 25 to imitate one and imitate well heater 27 heating through one under the effect of recycle pump 26 and concentrate, the slip that tentatively concentrated enters two from an outlet of imitating recycle pump 26 and imitates in the flashing chamber 28, imitating well heaters 30 heating through two under the effect of two effect recycle pumps 29 concentrates, concentrate good slip in punishment in advance pump 31 enters crystallisation by cooling groove 32, magma behind the crystallisation by cooling enters in the dashpot 33, the magma of emitting in the dashpot 33 enters in the finished product whizzer 34, solid phase after centrifugal is that work in-process enter drying machine 37 inner dryings, and dried product enters finished bin through product conveying belt 38 and chapelet 39.
Step 3: the gas with purification tank 15 and accurate adjustment circulation groove 21 tops in the secondary enters in the tail gas washing tower 23, uses the dilute phosphoric acid circulation cleaning under the effect of cleaning circulation pump 24, and the phosphor ammonium slurry after the washing enters in a neutralizing well 6 and uses.The secondary steam that comes out in neutralizing well 6 top and one is imitated and is entered two after secondary steam that flashing chamber 25 comes out merges and imitate between the pipe of well heaters 30, two imitate the steam that comes out on flashing chamber 28 tops enters in the condenser 41, and the water of condensation in the condenser 41 enters cooling tower 44 internal cooling under the effect of water circulating pump 43 in downtake enters liquid seal trough 42.
Claims (10)
1. the device of a producing industrial grade diammonium phosphate from wet-process phosphoric acid is characterized in that: mainly by phosphoric acid storage tank (1), phosphoric acid is for sour pump (2), ammonia jar (3), for ammonia pump (4), tubular reactor (5), a neutralizing well (6), once and recycle pump (7), once and whizzer (8), desulfurizer (10), desulfurization shurry pump (12), desulfuration centrifugal machine (13), in the secondary and purification tank (15), in the secondary and decontamination cycle pump (16), in the secondary and clarifying centrifuge (19), accurate adjustment circulation groove (21), one imitates flashing chamber (25), one imitates recycle pump (26), two imitate flashing chamber (28), two imitate recycle pump (29), punishment in advance pump (31), crystallisation by cooling groove (32), dashpot (33), finished product whizzer (34), mother liquor tank (35), mother liquor pump (36) formation that is interconnected;
The liquid outlet of described phosphoric acid storage tank (1) bottom links to each other with the import of phosphoric acid for sour pump (2), phosphoric acid is connected with tubular reactor (5) import for the outlet of sour pump (2), the outlet of ammonia jar (3) is connected with the import that supplies ammonia pump (4), supplies the outlet of ammonia pump (4) to link to each other with the import of tubular reactor (5);
The outlet of described tubular reactor (5) links to each other with a neutralizing well (6), the following liquid pipe of a neutralizing well (6) with once in link to each other with the import of recycle pump (7), once and recycle pump (7) outlet be communicated with the formation recycle system with the circulation fluid import of a neutralizing well (6), once with the outlet of recycle pump (7) with once in link to each other with the import of whizzer (8), link to each other with the fluid inlet at desulfurizer (10) top with the liquid outlet of whizzer (8) once, the liquid outlet of desulfurizer (10) links to each other with the import of desulfurization shurry pump (12), and the opening for feed at desulfurizer (10) top is communicated with sweetening agent warehouse (11);
The outlet of described desulfurization shurry pump (12) links to each other with the opening for feed of desulfuration centrifugal machine (13), the liquid outlet of desulfuration centrifugal machine (13) links to each other with the fluid inlet of purification tank (15) in doctor solution Receiving bin (45) and secondary, link to each other with the import of decontamination cycle (16) in the secondary with in the tremie pipe of purification tank (15) and the secondary, in the secondary and in the outlet of recycle pump (16) and the secondary and clarifying centrifuge (19) opening for feed be connected, in the secondary and the liquid outlet of clarifying centrifuge (19) be connected with accurate adjustment circulation groove (21) through scavenging solution Receiving bin (46);
The following liquid pipe of described accurate adjustment circulation groove (21) links to each other with a fluid inlet of imitating flashing chamber (25) through decontamination cycle pump (22), one feed opening of imitating flashing chamber (25) links to each other with an import of imitating recycle pump (26), the outlet of an effect recycle pump (26) the formation recycle system that communicates with the circulation fluid import of an effect flashing chamber (25);
Described one outlet pipe of imitating recycle pump (26) links to each other with two imports of imitating recycle pump (29), two outlets of imitating recycle pump (29) link to each other with the two circulation fluid imports of imitating flashing chamber (28), and the two following liquid pipes of imitating flashing chamber (28) link to each other with two imports of imitating recycle pump (29) and form the recycle system;
Described two outlets of imitating recycle pump (29) link to each other with the import of punishment in advance pump (31), the outlet of punishment in advance pump (31) links to each other with the opening for feed on crystallisation by cooling groove (32) top, the feed opening of crystallisation by cooling groove (32) links to each other with the opening for feed of dashpot (33), the feed opening of dashpot (33) links to each other with the opening for feed of finished product whizzer (34), the liquid outlet of finished product whizzer (34) links to each other with the fluid inlet of mother liquor tank (35), the discharge port of mother liquor tank (35) links to each other with the import of mother liquor pump (36), and the outlet of mother liquor pump (36) and is imitated recycle pump (26) and linked to each other with two imports of imitating recycle pump (29).
2. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1, it is characterized in that: a described effect flashing chamber (25) and is imitated and is communicated with an effect well heater (27) between the recycle pump (26), and two effect flashing chambers (28) and two are imitated and are communicated with two effect well heaters (30) between the recycle pumps (29).
3. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1 is characterized in that: the inlet mouth that inserts two effect well heaters (30) after described one gaseous phase outlet of imitating flashing chamber (25) top is communicated with the gaseous phase outlet on a neutralizing well (6) top.
4. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1, it is characterized in that: the gaseous phase outlet on the top of described accurate adjustment circulation groove (21) is communicated with tail gas washing tower (23), discharge port is arranged at the bottom of tail gas washing tower (23), discharge port is communicated with cleaning circulation pump (24), and the outlet pipe of cleaning circulation pump (24) is connected with the cycles of washing liquid import of tail gas washing tower (23) middle and upper part and forms a circulation cleaning system.
5. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1, it is characterized in that: the solid phase outlet of described finished product whizzer (34) is communicated with drying machine (37), the outlet of drying machine (37) is communicated with product conveying belt (38), the outlet of product conveying belt (38) is communicated with chapelet (39), and the outlet of chapelet (39) is communicated with packing storehouse (40).
6. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1, it is characterized in that: described two imitate flashing chamber (28) top gaseous phase outlet is communicated with condenser (41), the downtake of condenser (41) is communicated with liquid seal trough (42), and liquid seal trough (42) is communicated with through the water-in of recycle pump (43) with cooling tower (44).
7. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1 is characterized in that: described once in and the solid phase outlet of whizzer (8) be communicated with primary slag conveying belt (9).
8. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1 is characterized in that: the solid phase outlet of described desulfuration centrifugal machine (13) is communicated with desulfurization slag conveying belt (14).
9. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1 is characterized in that: in the described secondary and the outlet of the solid phase of clarifying centrifuge (19) be communicated with and purify slag conveying belt (20).
10. the device of a kind of producing industrial grade diammonium phosphate from wet-process phosphoric acid according to claim 1, it is characterized in that: in the described secondary and the opening for feed of purification tank (15) be communicated with ammonium sulfide transferpump (18), the import of ammonium sulfide transferpump (18) is communicated with ammonium sulfide storage tank (17).
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| CN 201320017901 CN203048603U (en) | 2013-01-14 | 2013-01-14 | Device for producing industrial-scale diammonium phosphate by using wet-process phosphoric acid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105329868A (en) * | 2015-10-30 | 2016-02-17 | 东华工程科技股份有限公司 | Method for recycling ammonia and hydrogen from ammonia synthesizing tail gas |
| CN107522335A (en) * | 2017-07-31 | 2017-12-29 | 湖北祥云(集团)化工股份有限公司 | A kind of utilization system of phosphoric acid and phosphate waste |
| CN107715490A (en) * | 2017-09-19 | 2018-02-23 | 云南云天化股份有限公司 | A kind of liquid foam separation method suitable for phosphoric acid by wet process low level flash cooled system |
| CN107963618A (en) * | 2017-12-28 | 2018-04-27 | 四川绵竹三佳饲料有限责任公司 | A kind of monoammonium phosphate production system |
| CN110282611A (en) * | 2019-06-21 | 2019-09-27 | 甘肃瓮福化工有限责任公司 | A kind of devices and methods therefor producing powdery water-soluble Diammonium phosphate (DAP) entirely |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105329868A (en) * | 2015-10-30 | 2016-02-17 | 东华工程科技股份有限公司 | Method for recycling ammonia and hydrogen from ammonia synthesizing tail gas |
| CN107522335A (en) * | 2017-07-31 | 2017-12-29 | 湖北祥云(集团)化工股份有限公司 | A kind of utilization system of phosphoric acid and phosphate waste |
| CN107715490A (en) * | 2017-09-19 | 2018-02-23 | 云南云天化股份有限公司 | A kind of liquid foam separation method suitable for phosphoric acid by wet process low level flash cooled system |
| CN107963618A (en) * | 2017-12-28 | 2018-04-27 | 四川绵竹三佳饲料有限责任公司 | A kind of monoammonium phosphate production system |
| CN110282611A (en) * | 2019-06-21 | 2019-09-27 | 甘肃瓮福化工有限责任公司 | A kind of devices and methods therefor producing powdery water-soluble Diammonium phosphate (DAP) entirely |
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