CN105854326A - Sulfate process titanium dioxide titanium solution dual cycle concentration method and device thereof - Google Patents
Sulfate process titanium dioxide titanium solution dual cycle concentration method and device thereof Download PDFInfo
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- CN105854326A CN105854326A CN201610451395.6A CN201610451395A CN105854326A CN 105854326 A CN105854326 A CN 105854326A CN 201610451395 A CN201610451395 A CN 201610451395A CN 105854326 A CN105854326 A CN 105854326A
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- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
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Abstract
The invention relates to a sulfate process titanium dioxide titanium solution dual cycle concentration method and a device thereof. The pressure difference between a first effect evaporator and a second effect evaporator is more than or equal to 0.015MPa, and cycle is formed between the first effect evaporator and a first effect heat exchanger. According to the invention, an effect of saving steam is obvious, heat emission is obviously reduced, and with the adoption of multiple-effect evaporation, condensation equipment and cooling equipment are small in scale and low in energy consumption. The problem that the tube pass is blocked by hydrolysis products due to local overheating is solved; and moreover, with the adoption of secondary steam at low temperature, the concentration of titanyl sulfate solution is improved, so that the concentration of the titanyl sulfate solution is improved during the subsequent live steam heating, and occurrence of hydrolysis of salts is greatly reduced.
Description
Technical field
The present invention relates to a kind of sulfate process titanium dioxide bicirculating method for concentration of titanium liquid and device thereof.
Background technology
The process product titanyl sulfate solution of sulfuric acid method titanium pigment needs to increase concentration by low-temperature evaporation in process of production, with
Meeting technological requirement, at present, titanium powder industry in China the most still uses traditional single-action liter diaphragm type vacuum evaporation equipment to carry out dense
Contracting, this equipment the most often produces 1 ton of titanium dioxide product needed and consumes 2.0-3.0 ton 0.3Mpa saturated vapor, and production cost is higher.
The major defect of prior art is as follows:
1, steam energy consumes big.Owing to using single effect evaporation, evaporating 1 ton of water needs to consume 1.25-1.7 ton steam；
2, heat dissipation is many.Owing to using single effect evaporation, the quantity of steam that vaporizer is discharged equal to evaporation capacity, required condensing plant and
Cooling device is big；
3, traditional handicraft rises film or the easy fouling and clogging of falling film type heater tube side, and use and maintenance maintenance cost is high；
4, directly easily cause saline hydrolysis with the titanyl sulfate saline solution that high-temperature steam heating concentration is diluter to occur.
Summary of the invention
It is an object of the invention to provide a kind of sulfate process titanium dioxide bicirculating method for concentration of titanium liquid and device thereof, save steaming effect bright
Aobvious, heat dissipation substantially reduces, and uses multiple-effect evaporation, and condensing plant and cooling device scale and energy consumption are low.Reduce tube side because of office
The problem of the overheated hydrolyzate blocking tube side occurred in portion；The indirect steam using temperature relatively low promotes titanyl sulfate concentration of salt solution,
Make the titanyl sulfate saline solution concentration when follow-up raw steam heats improve, significantly reduce the generation of saline hydrolysis.
The one sulfate process titanium dioxide bicirculating method for concentration of titanium liquid of the present invention, 1st effective evaporator exists with the pressure reduction of 2nd effect evaporator
More than-0.015MPa；Circulation is formed between 1st effective evaporator and an effect heat exchanger.
Also include that titanium liquid forms circulation between 2nd effect evaporator and two effect heat exchangers.
After titanium liquid is heated by three-effect heat exchanger before concentrating, enter two effect heat exchangers and titanium liquid is heated again, subsequently into two
Single-effect evaporator is evaporated, and the titanium liquid after part evaporation utilizes Circulation return two effect heat exchangers to enter with concentrating after front titanium liquid mixes
Row circulating-heating, the titanium hydrorrhea after another part evaporation flow to enter 1st effective evaporator after an effect heat exchanger heats up and is evaporated, portion
Utilize Circulation to return one after titanium liquid mixing after titanium liquid after lease making one effect evaporation and two effect evaporations to imitate heat exchanger and be circulated and add
Heat, another part concentration titanium liquid after an effect evaporation delivers to subsequent processing.
The indirect steam that 1st effective evaporator produces, returns two effect heat exchangers by vacuum traction as thermal source and heats, after heating
Titanium liquid enter to 2nd effect evaporator and be evaporated, three steam evaporated are delivered to three-effect heat exchanger and are heated.
The enrichment facility of the described sulfate process titanium dioxide bicirculating method for concentration of titanium liquid, including 1st effective evaporator, 1st effective evaporator
Connecting two effect heat exchangers by pipeline, two effect heat exchangers connect material liquid import by the first pipeline；1st effective evaporator bottom is passed through
Pipeline connects the top of an effect heat exchanger, and the bottom of 1st effective evaporator connects the bottom of an effect heat exchanger, two effects by the second pipeline
The bottom of vaporizer connects the top of two effect heat exchangers by pipeline, and the bottom of 2nd effect evaporator connects the first pipeline by pipeline；
2nd effect evaporator top connects condenser by pipeline.
First pipeline and the second pipeline pass through pipeline connection.
Two effect heat exchangers connect three-effect heat exchanger by the first pipeline, and three-effect heat exchanger connects condenser by the 3rd pipeline；Triple effect
The top of heat exchanger connects the top of 2nd effect evaporator.
Three-effect heat exchanger side arranges material liquid import.
It is respectively provided with pump on first pipeline and the second pipeline；Condenser side connects vacuum pump.
1st effective evaporator connects next operation；On one effect heat exchanger, raw steam inlet is set.
It is connection between one effect heat exchanger and two effect heat exchangers.
Circulation is formed so that titanium liquid fully absorbs steam heat, significantly carries between the 2nd effect evaporator of the present invention and two effect heat exchangers
High energy-saving effect.
Form circulation between the 1st effective evaporator of the present invention and an effect heat exchanger so that titanium liquid fully absorbs steam heat, formed double
Circulation, farthest utilizes steam heat.
The two effect heat exchangers of the present invention, communicate with the tube side of 1st effective evaporator with 2nd effect evaporator and an effect heat exchanger；One effect heat exchange
Device tube side communicates through 1st effective evaporator and two effect heat exchanger shell pass, and two effect heat exchanger tube pass are through 2nd effect evaporator and three-effect heat exchanger shell
Cheng Xiangtong.
The indirect steam that before concentrating, titanium liquid produces in an effect evaporating concentration process, vacuum is pulled into 2nd effect evaporator, and two-stage is steamed
Sending out concentration process, three steam of generation are drawn to triple effect heating system by vacuum again.
The present invention is mainly suitable for black titanium liquid.
Compared with prior art, the method have the advantages that
1, save steaming effect obvious, evaporate one ton of water about with 0.7-0.8 ton steam；
2, heat dissipation substantially reduces.Owing to using multiple-effect evaporation, the quantity of steam that vaporizer is discharged just corresponds to evaporation capacity
45-50%, required condensing plant and cooling device scale and energy consumption reduce；
3, use tube side circulation technology to increase flow velocity to greatly reduce the hydrolyzate that tube side occurs because of hot-spot and block tube side
Problem；
4, the indirect steam using temperature relatively low promotes titanyl sulfate concentration of salt solution, is allowed to the concentration when follow-up raw steam heats
Improve, significantly reduce the generation of saline hydrolysis.
Accompanying drawing explanation
The structural representation of Fig. 1 present invention；
In figure, 1, material liquid import, 2, vacuum pump, 3, two effect heat exchangers, 4,2nd effect evaporator, 5,1st effective evaporator,
6, an effect heat exchanger, 7, raw steam inlet, the 8, first pipeline, 9, three-effect heat exchanger, the 10, the 3rd pipeline, 11, condensation
Device, the 12, second pipeline.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
The method for concentration of the present invention a kind of sulfate process titanium dioxide titanium liquid, 1st effective evaporator 5 exists with the pressure reduction of 2nd effect evaporator 4
More than-0.015MPa；Circulation is formed between 1st effective evaporator 5 and an effect heat exchanger 6.
Also include that titanium liquid forms circulation between 2nd effect evaporator 4 and two effect heat exchangers 3.
After titanium liquid is heated by three-effect heat exchanger 9 before concentrating, enter two effect heat exchangers 3 and titanium liquid is heated again, then enter
Entering 2nd effect evaporator 4 to be evaporated, the titanium liquid after part evaporation utilizes Circulation to return two effects after mixing with titanium liquid before concentration and changes
Hot device 3 is circulated heating, and the titanium hydrorrhea after another part evaporation flow to enter 1st effective evaporator 5 after an effect heat exchanger 6 heats up
It is evaporated, after part titanium liquid after an effect evaporation and the titanium liquid mixing after two effect evaporations, utilizes Circulation to return an effect heat exchange
Device 6 is circulated heating, and another part concentration titanium liquid after an effect evaporation delivers to subsequent processing；
The indirect steam that 1st effective evaporator 5 produces, returns two effect heat exchangers 3 by vacuum traction as thermal source and heats, add
Titanium liquid after heat enters to 2nd effect evaporator 4 and is evaporated, and three steam evaporated are delivered to three-effect heat exchanger 9 and heated.
The enrichment facility of described sulfate process titanium dioxide titanium liquid method for concentration, including 1st effective evaporator 5,1st effective evaporator 5 passes through
Pipeline connects two effect heat exchangers 3, and two effect heat exchangers 3 connect material liquid import 1 by the first pipeline 8；1st effective evaporator 5 bottom
Connected the top of an effect heat exchanger 6 by pipeline, the bottom of 1st effective evaporator 5 connects an effect heat exchanger 6 by the second pipeline 12
Bottom, the bottom of 2nd effect evaporator 4 by pipeline connect two effect heat exchangers 3 tops, the bottom of 2nd effect evaporator 4 is passed through
Pipeline connects the first pipeline 8；2nd effect evaporator 4 top connects condenser 11 by pipeline.
First pipeline 8 and the second pipeline 12 pass through pipeline connection.
It is respectively provided with pump on first pipeline 8 and the second pipeline 12；Condenser 11 side connects vacuum pump 2.
1st effective evaporator 5 connects next operation；On one effect heat exchanger 6, raw steam inlet 7 is set.
Embodiment 2
The one sulfate process titanium dioxide bicirculating method for concentration of titanium liquid of the present invention, 1st effective evaporator 5 exists with the pressure reduction of 2nd effect evaporator 4
More than-0.015MPa；；Circulation is formed between 1st effective evaporator 5 and an effect heat exchanger 6.
Also include that titanium liquid forms circulation between 2nd effect evaporator 4 and two effect heat exchangers 3.
After titanium liquid is heated by three-effect heat exchanger 9 before concentrating, enter two effect heat exchangers 3 and titanium liquid is heated again, then enter
Entering 2nd effect evaporator 4 to be evaporated, the titanium liquid after part evaporation utilizes Circulation to return two effects after mixing with titanium liquid before concentration and changes
Hot device 3 is circulated heating, and the titanium hydrorrhea after another part evaporation flow to enter 1st effective evaporator 5 after an effect heat exchanger 6 heats up
It is evaporated, after part titanium liquid after an effect evaporation and the titanium liquid mixing after two effect evaporations, utilizes Circulation to return an effect heat exchange
Device 6 is circulated heating, and another part concentration titanium liquid after an effect evaporation delivers to subsequent processing；
The indirect steam that 1st effective evaporator 5 produces, returns two effect heat exchangers 3 by vacuum traction as thermal source and heats, add
Titanium liquid after heat enters to 2nd effect evaporator 4 and is evaporated, and three steam evaporated are delivered to three-effect heat exchanger 9 and heated.
The enrichment facility of the described sulfate process titanium dioxide bicirculating method for concentration of titanium liquid, including 1st effective evaporator 5, an effect evaporation
Device 5 connects two effect heat exchangers 3 by pipeline, and two effect heat exchangers 3 connect material liquid import 1 by the first pipeline 8；One effect evaporation
Device 5 bottom connects the top of an effect heat exchanger 6 by pipeline, and the bottom of 1st effective evaporator 5 connects an effect by the second pipeline 12
The bottom of heat exchanger 6, the bottom of 2nd effect evaporator 4 connects the top of two effect heat exchangers 3 by pipeline, 2nd effect evaporator 4
Bottom connects the first pipeline 8 by pipeline；2nd effect evaporator 4 top connects condenser 11 by pipeline.
First pipeline 8 and the second pipeline 12 pass through pipeline connection.
Two effect heat exchangers 3 connect three-effect heat exchanger 9 by the first pipeline 8, and three-effect heat exchanger 9 connects cold by the 3rd pipeline 10
Condenser 11；The top of three-effect heat exchanger 9 connects the top of 2nd effect evaporator 4.
Three-effect heat exchanger 9 side arranges material liquid import 1.
It is respectively provided with pump on first pipeline 8 and the second pipeline 12；Condenser 11 side connects vacuum pump 2.
1st effective evaporator 5 connects next operation；On one effect heat exchanger 6, raw steam inlet 7 is set.
Claims (10)
1. the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid, it is characterised in that 1st effective evaporator (5) and two effect evaporations
The pressure reduction of device (4) is at more than-0.015MPa；Circulation is formed between 1st effective evaporator (5) and effect heat exchanger (6).
The sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 1, it is characterised in that also include titanium liquid
Circulation is formed between 2nd effect evaporator (4) and two effects heat exchanger (3).
The sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 1, it is characterised in that titanium liquid before concentrating
After being heated by three-effect heat exchanger (9), enter two effects heat exchanger (3) and titanium liquid is heated again, steam subsequently into two effects
Sending out device (4) to be evaporated, the titanium liquid after part evaporation utilizes Circulation to return two effects heat exchanger (3) with concentrating after front titanium liquid mixes
Being circulated heating, the titanium hydrorrhea after another part evaporation flow to enter 1st effective evaporator (5) after an effect heat exchanger (6) heats up
It is evaporated, after part titanium liquid after an effect evaporation and the titanium liquid mixing after two effect evaporations, utilizes Circulation to return an effect heat exchange
Device (6) is circulated heating, and another part concentration titanium liquid after an effect evaporation delivers to subsequent processing.
The sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 1, it is characterised in that 1st effective evaporator
(5) indirect steam produced, returns two effects heat exchanger (3) by vacuum traction as thermal source and heats, the titanium after heating
Liquid enters to 2nd effect evaporator (4) and is evaporated, and three steam evaporated are delivered to three-effect heat exchanger (9) and heated.
5. an enrichment facility for the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid described in claim 1, its feature exists
In, including 1st effective evaporator (5), 1st effective evaporator (5) connects two effects heat exchanger (3), two effects heat exchanger (3) by pipeline
Material liquid import (1) is connected by the first pipeline (8)；1st effective evaporator (5) bottom connects effect heat exchanger (6) by pipeline
Top, the bottom of 1st effective evaporator (5) by the second pipeline (12) connect one effect heat exchanger (6) bottom, two effect steam
The bottom sending out device (4) connects the top of two effects heat exchanger (3) by pipeline, and the bottom of 2nd effect evaporator (4) is by pipeline even
Connect the first pipeline (8)；2nd effect evaporator (4) top connects condenser (11) by pipeline.
The enrichment facility of the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 5, its feature exists
In, the first pipeline (8) and the second pipeline (12) pass through pipeline connection.
The enrichment facility of the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 5, its feature exists
In, two effects heat exchanger (3) connect three-effect heat exchanger (9) by the first pipeline (8), and three-effect heat exchanger (9) is by the 3rd pipe
Road (10) connects condenser (11)；The top of three-effect heat exchanger (9) connects the top of 2nd effect evaporator (4).
The enrichment facility of the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 7, its feature exists
In, three-effect heat exchanger (9) side arranges material liquid import (1).
The enrichment facility of the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 5, its feature exists
In, the first pipeline (8) and the second pipeline (12) are respectively provided with pump；Condenser (11) side connects vacuum pump (2).
The enrichment facility of the sulfate process titanium dioxide bicirculating method for concentration of titanium liquid the most according to claim 5, its feature exists
In, 1st effective evaporator (5) connects next operation；In one effect heat exchanger (6), raw steam inlet (7) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451395.6A CN105854326A (en) | 2016-06-21 | 2016-06-21 | Sulfate process titanium dioxide titanium solution dual cycle concentration method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610451395.6A CN105854326A (en) | 2016-06-21 | 2016-06-21 | Sulfate process titanium dioxide titanium solution dual cycle concentration method and device thereof |
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| CN105854326A true CN105854326A (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550680A (en) * | 2019-09-06 | 2019-12-10 | 济南裕兴化工有限责任公司 | Method for preventing multi-effect concentration and one-effect scaling of titanium dioxide waste acid produced by sulfuric acid process |
| CN115463439A (en) * | 2022-09-22 | 2022-12-13 | 北京鑫瑞聚能科技有限公司 | Metatitanic acid cooling and titanium liquid concentration thermal coupling system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117219A (en) * | 2014-08-01 | 2014-10-29 | 南通三圣石墨设备科技股份有限公司 | Concentrating method of titaniferous solution for sulfate process titanium dioxide and special device |
| CN104117217A (en) * | 2014-08-01 | 2014-10-29 | 南通三圣石墨设备科技股份有限公司 | Method and device for automatically adjusting and controlling temperature and vacuum degree of titaniferous solution concentrating device |
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2016
- 2016-06-21 CN CN201610451395.6A patent/CN105854326A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117219A (en) * | 2014-08-01 | 2014-10-29 | 南通三圣石墨设备科技股份有限公司 | Concentrating method of titaniferous solution for sulfate process titanium dioxide and special device |
| CN104117217A (en) * | 2014-08-01 | 2014-10-29 | 南通三圣石墨设备科技股份有限公司 | Method and device for automatically adjusting and controlling temperature and vacuum degree of titaniferous solution concentrating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550680A (en) * | 2019-09-06 | 2019-12-10 | 济南裕兴化工有限责任公司 | Method for preventing multi-effect concentration and one-effect scaling of titanium dioxide waste acid produced by sulfuric acid process |
| CN115463439A (en) * | 2022-09-22 | 2022-12-13 | 北京鑫瑞聚能科技有限公司 | Metatitanic acid cooling and titanium liquid concentration thermal coupling system and method |
| CN115463439B (en) * | 2022-09-22 | 2023-11-10 | 北京鑫瑞聚能科技有限公司 | Thermal coupling system and method for cooling meta-titanic acid and concentrating titanium liquid |
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Application publication date: 20160817 |
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