CN106927439A - A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid - Google Patents
A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid Download PDFInfo
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- CN106927439A CN106927439A CN201710167954.5A CN201710167954A CN106927439A CN 106927439 A CN106927439 A CN 106927439A CN 201710167954 A CN201710167954 A CN 201710167954A CN 106927439 A CN106927439 A CN 106927439A
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- acid
- mud phosphorus
- phosphorus
- tower
- phosphoric acid
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- C—CHEMISTRY; METALLURGY
- 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
- C01B25/24—Condensed phosphoric acids
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid, phosphorus production by-product mud phosphorus is sent into mud phosphorus groove, is warmed to 70~80 DEG C, it is uniformly mixed, pumps into combustion tower inner nozzle, compressed air atomizing, with excessive 2.0~2.5 times of combustion airs in combustion tower internal oxidition, generation contains P2O5With the mud phosphorus high-temp combustion gas of water vapour, temperature is 1100~1200 DEG C, feeding hydrated tower bottom carries out hydration reaction with circulated sprinkling phosphoric acid,diluted adverse current, circulated sprinkling phosphoric acid,diluted temperature is 70~80 DEG C, exhaust temperature is less than 90 DEG C, installed under the liquid level of hydrated tower high-temp combustion gas inlet tube front lower place and take acid tank, the phosphoric acid that concentration expressed in percentage by weight is 90%~100% is directly led out from acid tank is taken.The present invention makes full use of the technique and equipment of mud phosphorus relieving haperacidity existing apparatus to produce polyphosphoric acid, save great deal of investment, simplify technological process, reduce energy consumption, it is especially suitable for the optimization and efficiently utilization of existing mud phosphorus sulphuric acid plant, the product for producing existing apparatus significantly appreciates, and market is widely used, remarkable in economical benefits.
Description
Technical field
The present invention relates to a kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid.
Technical background
Sulphur dioxide of phosphor chemical industry will supervene 10% or so mud phosphorus while industrial yellow phosphorus are produced（Main component is P4
：40~50%, H2O：40~50%, solid impurity：6~10%）, mud phosphorus is a kind of dangerous solid waste, in the prior art both
Safety and the processing mode of environmental protection are that Yunnan is introduced from Russia, it is special it is supporting for consuming by-product mud phosphorus in phosphorus production one
Plant mud phosphorus sulphuric acid plant（The device belongs to the environmental protection facility that must be run simultaneously with the master device of phosphorus production）, it gives birth to yellow phosphorus
70~80 DEG C are warmed in the mud phosphorus feeding mud phosphorus groove of by-product in product, are uniformly mixed, be pumped into the nozzle in combustion tower,
It is atomized by compressed air, is fired in combustion tower and again with excessive 2.0~2.5 times of combustion airs and oxidation reaction occurs in tower, is generated
Contain P2O5With the mud phosphorus high-temp combustion gas of water vapour, temperature control between 1100~1200 DEG C, subsequently into hydrated tower bottom
Hydration reaction is carried out with circulated sprinkling phosphoric acid,diluted adverse current, keeps the temperature of circulated sprinkling phosphoric acid,diluted between 70~80 DEG C, controlled
The height of circulation phosphoric acid,diluted liquid level and mud phosphorus high-temp combustion gas inlet tube is 700~900mm, exhaust temperature be maintained at 90 DEG C with
Under, emptying up to standard after being aspirated through electrostatic precipitator and blower fan, slag is by combustion tower and fires tower bottom pipeline again and draws off, and is obtained and weighs
Amount percentage concentration is 73~75% mud phosphoric acid.Because the concentration of mud phosphoric acid is relatively low, more using being limited, the market competitiveness is weak, should
Device is constantly in lossing state, has difficulty in taking a step.
The content of the invention
It is an object of the invention to provide a kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid, it is existing in the relieving haperacidity of mud phosphorus
Installation takes acid tank under having the hydrated tower high-temp combustion gas inlet tube front lower place liquid level of device, is directly led out from the adapter of acid tank middle part is taken
The phosphoric acid of concentration expressed in percentage by weight 90~100%.It is left that the concentration expressed in percentage by weight of mud phosphoric acid in the prior art is brought up to 95% by the method
The right side, as polyphosphoric acid, you can meet production APP Liquid Fertilizer ingredient requirement, environmental protection facility operational effect is significantly improved, city
Field is widely used, and product significantly appreciates, remarkable in economical benefits, effectively overcomes the defect of prior art presence, it is proposed that one
Plant the new technical scheme that high-concentration phosphoric acid is taken out using mud phosphorus relieving haperacidity existing apparatus.
The present invention is achieved through the following technical solutions：
A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid, phosphorus production by-product mud phosphorus is sent into mud phosphorus groove, heating
To 70~80 DEG C, it is uniformly mixed, is pumped into combustion tower inner nozzle, be atomized by compressed air, with excessive 2.0~2.5
Times combustion air fires in combustion tower and again and oxidation reaction occurs in tower, and generation contains P2O5With the mud phosphorus high-temp combustion gas of water vapour,
It is anti-that temperature control carries out aquation between 1100~1200 DEG C, subsequently into hydrated tower bottom and circulated sprinkling phosphoric acid,diluted adverse current
Should, keep circulated sprinkling phosphoric acid,diluted temperature between 70~80 DEG C, exhaust temperature is maintained at less than 90 DEG C, is returned through electrostatic precipitator
Acid mist is received, and by emptying up to standard after blower fan suction, it is with the prominent distinction of prior art：Enter in hydrated tower high-temp combustion gas
Installed under the liquid level of mouth pipe front lower place and take acid tank, acid tank top surface is taken with circulation phosphoric acid,diluted liquid level at a distance of 50~200mm, from acid tank is taken
Portion's adapter directly leads out concentration expressed in percentage by weight for 90~100% phosphoric acid.
Technical scheme of the present invention makes full use of the production technology and equipment of mud phosphorus relieving haperacidity existing apparatus, by mud phosphorus relieving haperacidity
The product design of existing apparatus brings up to concentration expressed in percentage by weight 95% or so, as polyphosphoric acid, realizes the liter of low value-added product
Level, environmental protection facility operational effect is significantly improved, and market is widely used, and product significantly appreciates, remarkable in economical benefits.Additionally, the party
Case is with industrial yellow phosphorus through combustion tower combustion oxidation into P2O5, enter back into the SPA suction that two grades of hydrated towers of one-level hydrated tower are produced
The polyphosphoric acid product of concentration expressed in percentage by weight >=95% is produced in midwifery, and gas goes successively to two grades of hydrated tower phosphoric acid,diluteds and absorbs, and tail gas leads to
Cross Venturi scrubber to be compared with the existing process of emptying up to standard after demister treatment, overcoming industrial yellow phosphorus production polyphosphoric acid needs
Want two-stage absorption, high temperature（120~130 DEG C）The defect of circulation, saves great deal of investment, greatly simplifies technological process,
Reduce energy consumption.
Brief description of the drawings
Accompanying drawing 1 is production schematic diagram of the invention.
Specific embodiment
The present invention is described in further detail and explained in conjunction with the accompanying drawings and embodiments, rather than limiting this hair by any way
It is bright.Those of ordinary skill in the art's any simple modifications made for the present invention and replacement, all should fall into protection model of the invention
Within enclosing.
Embodiment 1
A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid, phosphorus production by-product mud phosphorus is sent into mud phosphorus groove, heating
To 70~80 DEG C, it is uniformly mixed, is pumped into combustion tower inner nozzle, is atomized by compressed air, it is combustion-supporting with excessive 2.0 times
Air fires in combustion tower and again and oxidation reaction occurs in tower, and generation contains P2O5With the mud phosphorus high-temp combustion gas of water vapour, temperature control
At 1100 DEG C, the circulation phosphoric acid,diluted adverse current subsequently into the bottom of hydrated tower 2 and phosphoric acid,diluted shower 3 carries out hydration reaction to system, protects
The temperature of circulated sprinkling phosphoric acid,diluted is held at 70 DEG C, exhaust temperature is maintained at less than 90 DEG C, through electrostatic precipitator reclaim acid mist and by
Emptying up to standard after blower fan suction.In the front lower place of mud phosphorus high-temp combustion gas inlet tube 1 circulation phosphoric acid,diluted 4 times peaces of liquid level of hydrated tower 2
Dress takes acid tank 5, takes the top surface of acid tank 5 and circulates phosphoric acid,diluted liquid level 4 at a distance of 200mm, acid tube 6 is accessed from the middle part of acid tank 5 is taken, through taking
Concentration expressed in percentage by weight >=90% phosphoric acid is directly led out after acid tube valve 7, finished acid storage tank 8 is flowed into, hydrated tower bottom 9 has recycle acid to go out
Mouth 11, support bar 10 takes acid tank 5 for support.
Embodiment 2
A kind of utilization mud phosphorus sulphuric acid plant produces the method ... ... of polyphosphoric acid, with excessive 2.3 times of combustion airs in combustion tower and again
There is oxidation reaction in combustion tower, generation contains P2O5With the high-temp combustion gas of water vapour, temperature control is at 1150 DEG C ... ..., keeps
The temperature of circulated sprinkling phosphoric acid,diluted is at 75 DEG C ... ..., the top surface and recycle acid liquid level 4 of acid tank 5 is taken at a distance of 100mm ... ..., through taking
Concentration expressed in percentage by weight >=95% phosphoric acid ... ... is directly led out after acid tube valve 7.Other contents omitted no longer are gone to live in the household of one's in-laws on getting married with embodiment 1
State.
Embodiment 3
A kind of utilization mud phosphorus sulphuric acid plant produces the method ... ... of polyphosphoric acid, with excessive 2.5 times of combustion airs in combustion tower and again
There is oxidation reaction in combustion tower, generation contains P2O5With the high-temp combustion gas of water vapour, temperature control is at 1200 DEG C ... ..., keeps
The temperature of circulated sprinkling phosphoric acid,diluted is at 80 DEG C ... ..., the top surface and recycle acid liquid level 4 of acid tank 5 is taken at a distance of 60mm ... ..., through taking
Concentration expressed in percentage by weight is directly led out after acid tube valve 7 for 100% phosphoric acid ... ....Other contents omitted no longer are gone to live in the household of one's in-laws on getting married with embodiment 1
State.
The technology contents of the not detailed description of the present invention are known technology.
Claims (2)
1. a kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid, phosphorus production by-product mud phosphorus is sent into mud phosphorus groove, plus
Temperature is uniformly mixed to 70~80 DEG C, is pumped into combustion tower inner nozzle, is atomized by compressed air, with excessive 2.0~2.5
Times combustion air fires in combustion tower and again and oxidation reaction occurs in tower, and generation contains P2O5With the mud phosphorus high-temp combustion gas of water vapour,
Temperature control between 1100~1200 DEG C, subsequently into hydrated tower（2）Bottom and phosphoric acid,diluted shower（3）Circulation phosphoric acid,diluted
Adverse current carries out hydration reaction, keeps circulated sprinkling phosphoric acid,diluted temperature between 70~80 DEG C, and exhaust temperature is maintained at less than 90 DEG C,
Acid mist is reclaimed through electrostatic precipitator and by emptying up to standard after blower fan suction, it is characterised in that：In hydrated tower（2）Mud phosphorus high temperature combustion
Burn gas inlet tube（1）Circulate phosphoric acid,diluted liquid level in front lower place（4）Lower installation takes acid tank（5）, take acid tank（5）Top surface and the dilute phosphorus of circulation
Acid solution face（4）At a distance of 50~200mm, from taking acid tank（5）Middle part accesses acid tube（6）, directly lead out concentration expressed in percentage by weight for 90%~
100% phosphoric acid.
2. the method that a kind of utilization mud phosphorus sulphuric acid plant according to claim 1 produces polyphosphoric acid, it is characterised in that：Take acid
Pipe（6）Through taking acid tube valve（7）Finished acid storage tank is accessed afterwards（8）, hydrated tower bottom（9）There is recycle acid to export（11）, support bar
（10）Acid tank is taken for supporting（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710167954.5A CN106927439A (en) | 2017-03-21 | 2017-03-21 | A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710167954.5A CN106927439A (en) | 2017-03-21 | 2017-03-21 | A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid |
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| Publication Number | Publication Date |
|---|---|
| CN106927439A true CN106927439A (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710167954.5A Pending CN106927439A (en) | 2017-03-21 | 2017-03-21 | A kind of method that utilization mud phosphorus sulphuric acid plant produces polyphosphoric acid |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531354A (en) * | 2009-04-22 | 2009-09-16 | 瓮福（集团）有限责任公司 | Method for using phosphoric oxide to concentrate diluted phosphoric acid to prepare polyphosphoric acid |
| CN104261370A (en) * | 2014-09-25 | 2015-01-07 | 昆明理工大学 | Phosphoric acid production device by employing hot method |
| CN204848275U (en) * | 2015-07-09 | 2015-12-09 | 刘章孝 | Soil phosphorus recycling device |
| CN204873842U (en) * | 2015-07-09 | 2015-12-16 | 刘章孝 | Tail gas processing apparatus of phosphorous sludge burning relieving haperacidity technology |
| CN204873841U (en) * | 2015-07-09 | 2015-12-16 | 刘章孝 | Soil phosphorus recycling device |
| CN105731405A (en) * | 2016-01-20 | 2016-07-06 | 昆明理工大学 | Hot-process phosphoric acid production device with low-temperature heat energy recovery |
-
2017
- 2017-03-21 CN CN201710167954.5A patent/CN106927439A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531354A (en) * | 2009-04-22 | 2009-09-16 | 瓮福（集团）有限责任公司 | Method for using phosphoric oxide to concentrate diluted phosphoric acid to prepare polyphosphoric acid |
| CN104261370A (en) * | 2014-09-25 | 2015-01-07 | 昆明理工大学 | Phosphoric acid production device by employing hot method |
| CN204848275U (en) * | 2015-07-09 | 2015-12-09 | 刘章孝 | Soil phosphorus recycling device |
| CN204873842U (en) * | 2015-07-09 | 2015-12-16 | 刘章孝 | Tail gas processing apparatus of phosphorous sludge burning relieving haperacidity technology |
| CN204873841U (en) * | 2015-07-09 | 2015-12-16 | 刘章孝 | Soil phosphorus recycling device |
| CN105731405A (en) * | 2016-01-20 | 2016-07-06 | 昆明理工大学 | Hot-process phosphoric acid production device with low-temperature heat energy recovery |
Non-Patent Citations (1)
| Title |
|---|
| 王益: ""大型连续泥磷制酸装置设计"", 《硫磷设计》 * |
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Application publication date: 20170707 |