CN106185842A - A kind of titanium white waste acid enrichment facility - Google Patents
A kind of titanium white waste acid enrichment facility Download PDFInfo
- Publication number
- CN106185842A CN106185842A CN201610549130.XA CN201610549130A CN106185842A CN 106185842 A CN106185842 A CN 106185842A CN 201610549130 A CN201610549130 A CN 201610549130A CN 106185842 A CN106185842 A CN 106185842A
- Authority
- CN
- China
- Prior art keywords
- acid
- steam
- tank
- pipe
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to chemical industrial field liquid concentration operating process, specifically a kind of titanium white waste acid enrichment facility, the equipment that the method uses includes: thin acid pump, diluted acid tank, steam heater, flash tank, circulation acid-proof pump, water-jet pump.It is the tube side using thin acid pump that titanium white waste acid is pressed into steam heater, dilute spent acid flows in multitube distance back and forth, heat exchange is carried out with the steam of steam heater shell side, dilute spent acid is heated, hot spent acid outlet feeding flash tank through steam heater, in the vacuum environment of flash tank, dilute spent acid is injected into vaporific by shower nozzle, burst " flash distillation ", in dilute spent acid, large quantity of moisture evaporation forms water vapour, titanium white waste acid is concentrated to normal concentration, water vapour enters water-jet pump, water vapour is condensed, the titanium white waste acid being concentrated is discharged from flash tank concentrated acid outlet.It has the advantages such as technical process energy consumption is low, technique is simple and direct, effective, equipment is not easily blocked, safe and reliable to operation.
Description
Technical field
The present invention relates to chemical industrial field liquid concentration operating process, specifically a kind of titanium white waste acid enrichment facility.
Background technology
In chemical industrial field, there are many liquid charging stocks, semi-finished product to need to concentrate, are processed into product；There is much liquid
Waste material, in order to meet the requirement of environmental protection, to spent acid, the concentration of waste liquid, the most all uses the operation of steam heating evaporation
Journey.
Such as, in sulfuric acid method titanium pigment produces, the most scabrous is effective reuse of spent acid, because containing acid concentration being
The spent acid of about 20% to account for and to process the 70% of refuse, the concentrating and impurity removing treatment for reuse of spent acid or again with wave in always industry no
The serious problems gone and do not receive.
The method making a general survey of domestic and international sulfuric acid method titanium pigment business processes spent acid, using waste acid concentration is topmost method,
More external Large sulfuric acid method titanium dioxide enterprise all uses concentration method to process spent acid.Waste acid concentration method heats spent acid exactly, makes sulfur
Acid concentration increases, and is then back to hydrolysis procedure.Concentration method can use submerged combustion and evaporation.Submerged combustion is in early days
Concentration technology, technical process is the high-temperature gas (about 1200 DEG C) produced in a combustion chamber, is injected directly in spent acid, makes to give up
The moisture evaporation of acid and play the effect of concentrating waste acid, due to the raising of sulfuric acid concentration make the ferrous sulfate that is dissolved in spent acid with
The form of ferrous sulfate monohydrate separates out, and the sulfuric acid concentration after this method concentrates is the highest, and equipment corrosion is severe, the former Soviet Union useful this
Method is sold after Waste Sulfuric Acid is concentrated into 55% or for producing phosphate fertilizer.Evaporation and concentration, according to its evaporation intensity, concentrates progression,
Respectively the Waste Sulfuric Acid of about 20% being concentrated into 40%, 50%, 70% even more than 90%, this method is recent domestic titanium white
The method for concentration that powder enterprise is commonly used.But use multiple-effect evaporation to concentrate titanium white waste acid and there is the problem that is difficult to overcome: (1)
Evaporation tubes easily blocks, fluctuation of service；(2) equipment material requires height, and investment is big；(3) operation complexity, maintenance difficult, so
Be not suitable for some middle-size and small-size titanium dioxide enterprises of China.
Relevant open source literature reports some new methods concentrating titanium white waste acid.Such as: patent of invention
ZL201210365019.7 discloses the method utilizing solar energy heating to concentrate titanium white waste acid, i.e. utilizes solar heat collector
Preheating titanium white waste acid, make titanium white waste acid temperature reach 50～90 DEG C, the titanium white waste acid after then preheating is sent into
It is evaporated concentrating equipped with electrically heated evaporator, the method reduces the consumption of traditional energy in waste acid concentration, reduce titanium
White waste acid concentration production cost, but solar energy be not 365 days can, so the heat that solar heat collector produces is only
It it is the auxiliary thermal source as vacuum evaporation groove.
But energy consumption that above-mentioned document still could not find one is low, processing method is applicable to simply, again middle-size and small-size sulfuric acid process
The titanium white waste acid enrichment facility of titanium dioxide enterprise.
Summary of the invention
It is an object of the invention to provide a kind of small investment, processing method is simple, floor space is little, and titanium white waste acid concentrates dress
Put.
For achieving the above object, the present invention is to use thin acid pump will to steam containing the titanium white waste acid press-in that acid concentration is about 20%
The tube side of vapour heater, dilute spent acid flows in multitube distance back and forth, carries out heat exchange with the steam of steam heater shell side, dilute
Spent acid is heated, and through the hot spent acid outlet feeding flash tank of steam heater, in the vacuum environment of flash tank, dilute spent acid leads to
Crossing shower nozzle and be injected into vaporific, happen suddenly " flash distillation ", in dilute spent acid, large quantity of moisture evaporation forms water vapour, and titanium white waste acid is concentrated to regulation
Concentration, water vapour enters water-jet pump, and water vapour is condensed, and the titanium white waste acid being concentrated is from flash tank concentrated acid outlet
Discharge.
The equipment that above-mentioned a kind of titanium white waste acid enrichment facility uses includes: thin acid pump, diluted acid tank, steam heater, flash distillation
Tank, circulation acid-proof pump, water-jet pump, is characterized in that: the inlet tube of diluted acid tank is connected with dilute spent acid pipe；The deslagging of diluted acid tank
Pipe is connected with waste residue pipe；The outlet of diluted acid tank is connected with the inlet tube of thin acid pump；The outlet of thin acid pump and steam heater
Diluted acid inlet tube connect；The hot spent acid outlet of steam heater is connected with the hot spent acid inlet tube of flash tank；Flash tank
Steam outlet pipe is connected with the steam inlet pipe of water-jet pump；The loop exit pipe of flash tank and the import circulating acid-proof pump
Pipe connects；The outlet of circulation acid-proof pump is connected with the inlet tube of diluted acid tank；The dense spent acid discharge pipe of flash tank and dense spent acid pipe
Connect；The steam inlet pipe of steam heater is connected with steam pipeline；The steam condensation water discharge pipe of steam heater is with solidifying
Bear water collecting pipe to connect.
The steam heater that above-mentioned a kind of titanium white waste acid enrichment facility uses is to use the steam-heated structure of multitube distance, its
Heat-transfer pipe and tube side basin all use resistant material to make, and its shell side basin uses carbon steel to make.
The technique that above-mentioned a kind of titanium white waste acid enrichment facility is applicable to sulfuric acid process preparing titanium dioxide.
Compared with prior art, its prominent substantive distinguishing features with significantly progress is the present invention:
1. technical process energy consumption is low: use the heating of multitube distance steam, and the efficiency of heating surface is high；Using vacuum evaporation, energy consumption is low；This device
More energy-conservation much than the method that generally heating spent acid makes sulfuric acid concentration increase.
2. technique is simple and direct, effective: the spent acid that in diluted acid tank, concentration is high has crystallization owing to temperature declines and is sunken to tank
The end, it is ensured that steam heater is the most blocked, this technical process is simple and direct and effective, safe and reliable to operation, lays for spent acid recycling
Basis.
3. remarkable in economical benefits: this technology investment is few, reclaims and utilizes substantial amounts of spent acid, remarkable in economical benefits.
4. obvious environment benefit: this technical process does not produce any new environmentally hazardous harmful substance, meets " decrement
Change, resource " principle, obvious environment benefit.
Accompanying drawing explanation
Fig. 1 is the process chart of a kind of method concentrating titanium white waste acid of the present invention.
Detailed description of the invention
As it is shown in figure 1, the equipment that a kind of titanium white waste acid enrichment facility uses includes: thin acid pump 1, diluted acid tank 2, steam heat
Device 3, flash tank 4, circulation acid-proof pump 5, water-jet pump 6, is characterized in that: the inlet tube of diluted acid tank 2 is connected with dilute spent acid pipe；
The scum pipe of diluted acid tank 2 is connected with waste residue pipe；The outlet of diluted acid tank 2 is connected with the inlet tube of thin acid pump 1；Going out of thin acid pump 1
Mouth pipe is connected with the diluted acid inlet tube of steam heater 3；The hot spent acid outlet of steam heater 3 and the hot spent acid of flash tank 4
Inlet tube connects；The steam outlet pipe of flash tank 4 is connected with the steam inlet pipe of water-jet pump 6；Recycling of flash tank 4
Mouth pipe is connected with the inlet tube of circulation acid-proof pump 5；The outlet of circulation acid-proof pump 5 is connected with the inlet tube of diluted acid tank 2；Flash tank
The dense spent acid discharge pipe of 4 is connected with dense spent acid pipe；The steam inlet pipe of steam heater 3 is connected with steam pipeline；Steam adds
The steam condensation water discharge pipe of hot device 3 is connected with condensate water collecting pipe.
Idiographic flow is as follows: titanium white waste acid is sent into diluted acid tank 2 by dilute spent acid pipe and stores to be heated, and employing thin acid pump 1 will
The tube side of dilute spent acid press-in steam heater 3, dilute spent acid flows in multitube distance back and forth, with the steam of steam heater 3 shell side
Carrying out heat exchange, dilute spent acid is heated, through the hot spent acid outlet feeding flash tank 4 of steam heater 3, at flash tank 4
In vacuum environment, dilute spent acid is injected into vaporific by shower nozzle, happens suddenly " flash distillation ", and in dilute spent acid, large quantity of moisture evaporation forms water steaming
Vapour, water vapour is separated entrainment of drop by wire mesh demister, the tiny liquid foam carried secretly by water vapour, is then passed through steam (vapor) outlet
Pipe enters water-jet pump 6, and water vapour is condensed, and due to the swabbing action of water-jet pump 6, makes flash tank 4 be in very
Idling pressure condition.Dilute spent acid large quantity of moisture in tank is evaporated, and acid-spending strength increases, and settles downwards, and the spent acid of low concentration is upwards
Rolling, liquid layer forms circulation in tank；On the other hand, lower the temperature because of evaporation, and the upper strata spent acid circulation of not up to concentration is resistance to
Acid pump 5 send into diluted acid tank 2 store wait continue heating, liquid base layer reach the dense spent acid of concentration requirement from bottom dense spent acid row
Go out bank of tubes to go out.Entering the high spent acid of diluted acid tank 2 concentration to have crystallization owing to temperature declines and be sunken to tank bottoms, these crystallizations are useless
Slag is made timing disposing and is processed.
Embodiment 1
To contain acid concentration is about 20%, and temperature is that the titanium white waste acid of 50 degree stores to be added by dilute spent acid pipe feeding diluted acid tank 2
Heat, uses thin acid pump 1 by the tube side of dilute spent acid press-in steam heater 3, and dilute spent acid flows in multitube distance back and forth, adds with steam
The steam of hot device 3 shell side carries out heat exchange, and dilute spent acid is heated, and temperature rises to about 80 degree, through the heat of steam heater 3
Flash tank 4 sent into by spent acid outlet, and in the vacuum environment of flash tank 4, dilute spent acid is injected into vaporific by shower nozzle, and burst " is dodged
Steam ", in dilute spent acid, large quantity of moisture evaporation forms water vapour, and water vapour by wire mesh demister, is pressed from both sides by water vapour entrainment of drop
The tiny liquid foam of band separates, and then enters water-jet pump 6 by steam outlet pipe, and water vapour is condensed, owing to water sprays
The swabbing action of vacuum pump 6, makes flash tank 4 be in vacuum negative pressure condition.Dilute spent acid large quantity of moisture in tank is evaporated, and spent acid is dense
Degree increases, and settles downwards, and the spent acid of low concentration upwards rolls, and liquid layer forms circulation in tank；On the other hand, drop because of evaporation
Temperature, and the upper strata spent acid circulation acid-proof pump 5 of not up to concentration sends into diluted acid tank 2 and stores and wait and continue heating, at liquid base layer
Reach dense spent acid dense spent acid discharge pipe discharge from bottom that concentration is about 50%.Enter the high spent acid of diluted acid tank 2 concentration due to temperature
Degree decline has crystallization and is sunken to tank bottoms, and these crystallization waste residues are made timing disposing and processed.
Embodiment 2
To contain acid concentration is about 30%, and temperature is that the titanium white waste acid of 60 degree stores to be added by dilute spent acid pipe feeding diluted acid tank 2
Heat, uses thin acid pump 1 by the tube side of dilute spent acid press-in steam heater 3, and dilute spent acid flows in multitube distance back and forth, adds with steam
The steam of hot device 3 shell side carries out heat exchange, and dilute spent acid is heated, and temperature rises to about 100 degree, through steam heater 3
Flash tank 4 sent into by hot spent acid outlet, and in the vacuum environment of flash tank 4, dilute spent acid is injected into vaporific by shower nozzle, burst
" flash distillation ", in dilute spent acid, large quantity of moisture evaporation forms water vapour, and water vapour passes through wire mesh demister entrainment of drop, by water vapour
The tiny liquid foam carried secretly separates, and then enters water-jet pump 6 by steam outlet pipe, and water vapour is condensed, owing to water sprays
Penetrate the swabbing action of vacuum pump 6, make flash tank 4 be in vacuum negative pressure condition.Dilute spent acid large quantity of moisture in tank is evaporated, spent acid
Concentration increases, and settles downwards, and the spent acid of low concentration upwards rolls, and liquid layer forms circulation in tank；On the other hand, drop because of evaporation
Temperature, and the upper strata spent acid circulation acid-proof pump 5 of not up to concentration sends into diluted acid tank 2 and stores and wait and continue heating, at liquid base layer
Reach dense spent acid dense spent acid discharge pipe discharge from bottom that concentration is about 60%.Enter the high spent acid of diluted acid tank 2 concentration due to temperature
Degree decline has crystallization and is sunken to tank bottoms, and these crystallization waste residues are made timing disposing and processed.
Claims (3)
1. the equipment of a titanium white waste acid enrichment facility employing includes: thin acid pump (1), diluted acid tank (2), steam heater (3), sudden strain of a muscle
Steaming pot (4), circulation acid-proof pump (5), water-jet pump (6), is characterized in that: the inlet tube of diluted acid tank (2) and dilute spent acid Guan Lian
Connect；The scum pipe of diluted acid tank (2) is connected with waste residue pipe；The outlet of diluted acid tank (2) is connected with the inlet tube of thin acid pump (1)；Dilute
The outlet of acid pump (1) is connected with the diluted acid inlet tube of steam heater (3)；The hot spent acid outlet of steam heater (3) with
The hot spent acid inlet tube of flash tank (4) connects；The steam outlet pipe of flash tank (4) and the steam inlet of water-jet pump (6)
Pipe connects；The loop exit pipe of flash tank (4) is connected with the inlet tube of circulation acid-proof pump (5)；The outlet of circulation acid-proof pump (5)
It is connected with the inlet tube of diluted acid tank (2)；The dense spent acid discharge pipe of flash tank (4) is connected with dense spent acid pipe；Steam heater (3)
Steam inlet pipe is connected with steam pipeline；The steam condensation water discharge pipe of steam heater (3) is connected with condensate water collecting pipe.
A kind of titanium white waste acid enrichment facility the most according to claim 1, it is characterised in that: the steam heater (3) of employing
Being to use the steam-heated structure of multitube distance, its heat-transfer pipe and tube side basin all use resistant material to make, its shell side basin
Employing carbon steel is made.
The technique that a kind of titanium white waste acid enrichment facility the most according to claim 1 is applicable to sulfuric acid process preparing titanium dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549130.XA CN106185842B (en) | 2016-07-13 | 2016-07-13 | A kind of titanium white waste acid enrichment facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549130.XA CN106185842B (en) | 2016-07-13 | 2016-07-13 | A kind of titanium white waste acid enrichment facility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106185842A true CN106185842A (en) | 2016-12-07 |
| CN106185842B CN106185842B (en) | 2018-07-17 |
Family
ID=57477157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610549130.XA Expired - Fee Related CN106185842B (en) | 2016-07-13 | 2016-07-13 | A kind of titanium white waste acid enrichment facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106185842B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905248A (en) * | 2018-09-05 | 2018-11-30 | 嘉兴市净源循环环保科技有限公司 | A kind of spent acid pre-concentration device |
| CN115028207A (en) * | 2022-06-24 | 2022-09-09 | 杭州安永环保科技有限公司 | Method for concentrating titanium dioxide waste acid by sulfuric acid process |
| CN115253735A (en) * | 2022-06-10 | 2022-11-01 | 贵州兰鑫石墨机电设备制造有限公司 | Titanium white waste acid concentration device and concentration process not easy to block |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225240A (en) * | 2011-05-23 | 2011-10-26 | 南通三圣石墨设备科技股份有限公司 | Concentration method based on combination of titanium liquid film evaporation and multilevel flash evaporation |
| CN102556981A (en) * | 2010-12-24 | 2012-07-11 | 漯河市兴茂钛业有限公司 | Comprehensive utilization method for solid wastes and waste acid in production process of titanium dioxide |
| CN102887487A (en) * | 2012-09-27 | 2013-01-23 | 攀枝花学院 | Method for concentrating titanium dioxide waste acid by utilizing solar energy |
-
2016
- 2016-07-13 CN CN201610549130.XA patent/CN106185842B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556981A (en) * | 2010-12-24 | 2012-07-11 | 漯河市兴茂钛业有限公司 | Comprehensive utilization method for solid wastes and waste acid in production process of titanium dioxide |
| CN102225240A (en) * | 2011-05-23 | 2011-10-26 | 南通三圣石墨设备科技股份有限公司 | Concentration method based on combination of titanium liquid film evaporation and multilevel flash evaporation |
| CN102887487A (en) * | 2012-09-27 | 2013-01-23 | 攀枝花学院 | Method for concentrating titanium dioxide waste acid by utilizing solar energy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905248A (en) * | 2018-09-05 | 2018-11-30 | 嘉兴市净源循环环保科技有限公司 | A kind of spent acid pre-concentration device |
| CN115253735A (en) * | 2022-06-10 | 2022-11-01 | 贵州兰鑫石墨机电设备制造有限公司 | Titanium white waste acid concentration device and concentration process not easy to block |
| CN115028207A (en) * | 2022-06-24 | 2022-09-09 | 杭州安永环保科技有限公司 | Method for concentrating titanium dioxide waste acid by sulfuric acid process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106185842B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107008026A (en) | Nickel sulfate evaporative crystallization technique | |
| CN106185842B (en) | A kind of titanium white waste acid enrichment facility | |
| CN106178564B (en) | A kind of titanium white waste acid external circulating multi-effect evaporator | |
| CN111003717B (en) | Method for preparing alkali salt by evaporating and crystallizing sea water desalination strong brine | |
| CN106829899B (en) | The Wet Processes of Phosphoric Acid and fluosilicic acid processing method of no fluorinated tail gas discharge | |
| CN210278295U (en) | Sulfate process titanium dioxide titanium liquid concentration system | |
| CN106115634B (en) | A kind of method for concentrating titanium white waste acid | |
| CN207046880U (en) | Hydrochloric acid pickling waste liquor recovery and processing system | |
| CN103466658B (en) | Sodium cyanide evaporation and concentration device and method | |
| CN105645490B (en) | A kind of rare earth processing waste water processing unit and technique | |
| CN202220087U (en) | Regeneration processing device for waste acid through evaporation method | |
| CN104030379A (en) | Evaporator for treating oily sewage | |
| CN216584272U (en) | Primary evaporation negative pressure desalting device for desalting high-salinity wastewater | |
| CN105858621B (en) | A kind of method that use gas-liquid contact method concentrates titanium white waste acid | |
| CN105731571A (en) | Energy-saving distillation desalination system and method based on steel plant waste hot water waste heat utilization | |
| CN104926609B (en) | The method of neopentyl glycol mother solution and technological process thereof in a kind for the treatment of cloth ibuprofen synthesis procedure | |
| CN212403459U (en) | Deep analytical equipment of olefine acid concentration | |
| CN104524797B (en) | Energy-conservation concentration and evaporation method in zirconium oxychloride production process | |
| CN218755115U (en) | Stainless steel pickling waste liquid treatment device | |
| CN106830488A (en) | A kind of steel galvanization spent acid auto purification environment-friendly disposal system and method | |
| CN102442884B (en) | Method for recovering ethanol during soy production process and device thereof | |
| CN109809361A (en) | A kind of de- analysis technique of the hydrochloric acid of high-efficiency environment friendly | |
| CN107226457A (en) | A kind of wire rope factory abraum salt acid treatment device and the method for processing application | |
| CN104819448B (en) | A kind of energy supply system of epoxychloropropane saponification process | |
| CN205269094U (en) | Radiant type spent acid rectifier unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 Termination date: 20210713 |