CN206799347U - A kind of processing system for phosphoric acid waste water and recovery phosphoric acid - Google Patents
A kind of processing system for phosphoric acid waste water and recovery phosphoric acid Download PDFInfo
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- CN206799347U CN206799347U CN201720404506.8U CN201720404506U CN206799347U CN 206799347 U CN206799347 U CN 206799347U CN 201720404506 U CN201720404506 U CN 201720404506U CN 206799347 U CN206799347 U CN 206799347U
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- phosphoric acid
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Abstract
The utility model discloses a kind of processing system for phosphoric acid waste water and recovery phosphoric acid, belong to phosphorous chemical industry production technical field.The system includes dioxygen water storage tank and the spent acid storage tank being sequentially connected by pipeline, agitating reaction pond, the first filter press, vacuum distillation reactor, decoloring reaction kettle, the second filter press and recovery acid storage tank, the dioxygen water storage tank is connected by pipeline with agitating reaction pond, vacuum distillation reactor and decoloring reaction kettle, and the spent acid storage tank and recovery acid storage tank are connected by pipeline with phosphoric acid production system.The system can not only handle waste water caused by phosphoric acid production enterprise oneself production, client can also be handled using caused waste water after phosphoric acid, the mass concentration of waste water after processing is 40 50%, it can sell as raw material for refractory, metal conditioner etc., phosphoric acid production system can also directly be returned to be reused, can be used for producing accessory substance.
Description
Technical field
The utility model belongs to phosphorous chemical industry production technical field, more particularly to a kind of to be used for phosphoric acid waste water and reclaim phosphoric acid
Processing system.
Background technology
In the production processes such as phosphorus pentoxide, phosphoric acid or polyphosphoric acid, it is required for carrying out washing process to tail gas, it will production
Raw substantial amounts of phosphorus-containing wastewater.Specifically, for producing 12000 tons of industrial phosphoric acids（85%）Production line will produce 1200 tons or so
Waste phosphoric acid（Calculated with 30%）, by ton output of yield spent acid 100kg；For producing 5000 tons of phosphorus pentoxides（98%）Production line will
1000 tons or so waste phosphoric acids can be produced（Calculated with 30%）, by ton output of yield spent acid 200kg；For producing 3000 tons of polyphosphoric acids
（84%）Production line will produce 750 tons or so waste phosphoric acids（Calculated with 30%）, by ton output of yield spent acid 250kg.Whole
Aoxidize in the production processes such as two phosphorus, phosphoric acid or polyphosphoric acid, the acid concentration of obtained phosphoric acid waste water about acts on 20%, i.e., phosphorous
A large amount of waste phosphoric acids can be produced in material production process.
In addition, in chemical industry synthesis, phosphoric acid can be used as dewaterer, catalyst and closed loop agent etc., can lose after completion of the reaction
Stay in a solvent；Especially in organic synthesis, after completion of the reaction, by reclaiming organic solvent, it is residual that phosphoric acid can remain in distillation
In liquid, spent acid caused by chemical industry synthesis has the shortcomings that concentration is low, organic impurity content is high, color is deep, and processing is cumbersome, processing
Cost is higher.
The content of the invention
In order to solve the above problems, the utility model embodiment provides a kind of place for phosphoric acid waste water and recovery phosphoric acid
Reason system, the system can not only handle phosphoric acid production enterprise oneself production caused by waste water, client can also be handled and utilize phosphorus
Caused waste water after acid, the mass concentration of the waste water after processing in 40-50%, its can sell as raw material for refractory,
Metal conditioner etc., it can also directly return to phosphoric acid production system and be reused, can be used for producing accessory substance
（Monosodium phosphate and tertiary sodium phosphate etc.）.The technical scheme is as follows：
The utility model embodiment provides a kind of processing system for phosphoric acid waste water and recovery phosphoric acid, and the system includes
Dioxygen water storage tank and the spent acid storage tank being sequentially connected by pipeline, agitating reaction pond, the first filter press, vacuum distillation reactor,
Decoloring reaction kettle, the second filter press and recovery acid storage tank, the dioxygen water storage tank pass through pipeline and agitating reaction pond, vacuum distillation
Reactor is connected with decoloring reaction kettle, and the spent acid storage tank and recovery acid storage tank are connected by pipeline with phosphoric acid production system.
Preferably, processing system provided by the utility model also includes by-product production device, the by-product production dress
Put and be connected by pipeline with spent acid storage tank and recovery acid storage tank.
Preferably, condenser is provided with the top of vacuum distillation reactor provided by the utility model, the condenser passes through pipe
Road is connected with exhaust treatment system.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：The utility model embodiment provides
A kind of processing system for phosphoric acid waste water and recovery phosphoric acid, the system can not only handle phosphoric acid production enterprise oneself production production
Raw waste water, client can also be handled using caused waste water after phosphoric acid, the waste water after processing has concentration height（40-50wt%）、
The advantage such as low with organic impurity content of light color.According to the situation of waste water and the demand of client, treated using the system useless
Acid can sell as raw material for refractory, metal conditioner etc., can also directly return to phosphoric acid production system and enter
Row reuses, and can be used for producing accessory substance（Monosodium phosphate and tertiary sodium phosphate etc.）.
Brief description of the drawings
Fig. 1 is the principle frame for the processing system for being used for phosphoric acid waste water and reclaiming phosphoric acid that the utility model embodiment provides
Figure.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.
Referring to Fig. 1, the utility model embodiment provides a kind of processing system for phosphoric acid waste water and recovery phosphoric acid, should
System includes dioxygen water storage tank and the spent acid storage tank being sequentially connected by pipeline, agitating reaction pond, the first filter press, vacuum distillation
Reactor, decoloring reaction kettle, the second filter press and recovery acid storage tank etc..Wherein, agitating reaction pond is the reaction tank with stirring,
Vacuum distillation reactor is the conventional acid-resistant reacting kettle with insulation jacket, stirring and vavuum pump etc., and decoloring reaction kettle stirs for band
Mix and stir the conventional acid-resistant reacting kettle of insulation jacket, the first filter press and the second filter press be conventional acidproof plate and frame filter press and
It can be realized by same plate and frame filter press.Wherein, dioxygen water storage tank passes through pipeline and agitating reaction pond, vacuum distillation reactor
Connected with decoloring reaction kettle, spent acid storage tank and recovery acid storage tank are connected by pipeline with phosphoric acid production system.Above-mentioned each structure it
Between pipeline on be arranged as required to pump, flowmeter or valve etc..
Preferably, referring to Fig. 1, processing system provided by the utility model also includes by-product production device, accessory substance life
Production device is connected by pipeline with spent acid storage tank and recovery acid storage tank.By-product production device can be monosodium phosphate process units
With trisodium phosphate production device.
Preferably, be provided with condenser at the top of vacuum distillation reactor provided by the utility model, condenser by pipeline and
Exhaust treatment system connects.Exhaust treatment system can be phosphoric acid production system band exhaust treatment system or individually
Exhaust treatment system is set, and the exhaust treatment system includes at least one caustic wash tower, at least one being sequentially connected by pipeline
Water scrubber and emptying chimney.
Specifically, spent acid storage tank is mainly connected with the vent gas treatment structure in phosphoric acid production system, and recovery acid storage tank is main
It is connected with the primary cycle pond in phosphoric acid production system or secondary cycle pond.
The processing system for being used for phosphoric acid waste water and reclaiming phosphoric acid provided with reference to Fig. 1 the present embodiment illustrates：
If being mainly waste water caused by production process of phosphoric acid in spent acid storage tank, the waste water of spent acid storage tank can be sent directly into
Phosphoric acid production system is used to produce phosphoric acid or be sent into by-product production device to be used to produce monosodium phosphate and tertiary sodium phosphate, phosphoric acid
The process units of trisodium may refer to the patent of Application No. 201420318754.7；It is of course also possible to it is sent directly into vacuum steaming
Reactor is evaporated to be concentrated.If mainly it is sent into stirring reaction from the phosphoric acid of chemical enterprise recovery, the phosphoric acid in spent acid storage tank
Chi Zhong, hydrogen peroxide is passed through, after stirring period of aeration, is sent into the first filter press and carries out separation of solid and liquid, filtrate is sent into vacuum and steamed
Evaporate reactor to be concentrated in vacuo, in vacuum Concentrating Process, as needed（Impurity content, color etc.）Add or be added without
Hydrogen peroxide, decoloring reaction kettle is sent after the completion of concentration, activated carbon and diatomite are added in decoloring reaction kettle, as needed（Impurity
Content, color etc.）Hydrogen peroxide is added or be added without, send the second filter press to carry out separation of solid and liquid after the completion of decolouring, filtrate is sent back to
Acid storage tank is received, the phosphoric acid of recovery is sent into phosphoric acid production system and is used to produce phosphoric acid or be sent into by-product production device to be used to produce
Monosodium phosphate and tertiary sodium phosphate sell as raw material for refractory, metal conditioner etc..
Wherein, " first " and " second " in the present embodiment only plays differentiation, without other Special Significances.
The utility model embodiment provides a kind of processing system for phosphoric acid waste water and recovery phosphoric acid, and the system is not only
Waste water caused by phosphoric acid production enterprise oneself production can be handled, client can also be handled using caused waste water after phosphoric acid, place
Waste water after reason has concentration height（40-50wt%）, the advantage such as low with organic impurity content of light color.According to the situation of waste water and
The demand of client, the spent acid treated using the system can sell as raw material for refractory, metal conditioner
Deng, can also directly return to phosphoric acid production system is reused, can be used for produce accessory substance（Monosodium phosphate and phosphoric acid
Trisodium etc.）.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (3)
1. a kind of processing system for phosphoric acid waste water and recovery phosphoric acid, it is characterised in that including dioxygen water storage tank and pass through pipe
Spent acid storage tank that road is sequentially connected, agitating reaction pond, the first filter press, vacuum distillation reactor, decoloring reaction kettle, the second press filtration
Machine and recovery acid storage tank, the dioxygen water storage tank pass through pipeline and agitating reaction pond, vacuum distillation reactor and decoloring reaction kettle
Connection, the spent acid storage tank and recovery acid storage tank are connected by pipeline with phosphoric acid production system.
2. the processing system according to claim 1 for phosphoric acid waste water and recovery phosphoric acid, it is characterised in that the system
Also include by-product production device, the by-product production device is connected by pipeline with spent acid storage tank and recovery acid storage tank.
3. the processing system according to claim 1 for phosphoric acid waste water and recovery phosphoric acid, it is characterised in that the vacuum
Condenser is provided with the top of distillation reactor, the condenser is connected by pipeline with exhaust treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404506.8U CN206799347U (en) | 2017-04-18 | 2017-04-18 | A kind of processing system for phosphoric acid waste water and recovery phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404506.8U CN206799347U (en) | 2017-04-18 | 2017-04-18 | A kind of processing system for phosphoric acid waste water and recovery phosphoric acid |
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| CN206799347U true CN206799347U (en) | 2017-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268848A (en) * | 2020-03-27 | 2020-06-12 | 浙江迪萧环保科技有限公司 | Clean and efficient phosphoric acid recovery process |
-
2017
- 2017-04-18 CN CN201720404506.8U patent/CN206799347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268848A (en) * | 2020-03-27 | 2020-06-12 | 浙江迪萧环保科技有限公司 | Clean and efficient phosphoric acid recovery process |
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