CN105110360B - A kind of method recycling BaO process titanium dioxide wastewater - Google Patents
A kind of method recycling BaO process titanium dioxide wastewater Download PDFInfo
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- CN105110360B CN105110360B CN201510426097.7A CN201510426097A CN105110360B CN 105110360 B CN105110360 B CN 105110360B CN 201510426097 A CN201510426097 A CN 201510426097A CN 105110360 B CN105110360 B CN 105110360B
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Abstract
The invention discloses a kind of method recycling BaO process titanium dioxide wastewater, belong to technical field of sewage.Produced BaSO in the titanium dioxide wastewater that barium monoxide is processed by the present invention4Precipitate is dried under the conditions of uniform temperature, is placed in electron accelerator and at high temperature carries out electron irradiation, makes molecule activation, changes molecule quantivalence, is simultaneously introduced the Fe prepared by nano titanium oxide, ferrum oxide and molecular sieve2O3/TiO2/ molecular sieve mixed catalyst, to BaSO4Precipitate carries out being catalyzed, reducing, and must process the BaO needed for titanium dioxide wastewater.The invention has the beneficial effects as follows: BaO can be from BaSO4Reclaiming in precipitate, turn waste into wealth, value is big, and the circulation reaching resource effectively utilizes；Processing procedure is simple, low cost, environmentally safe, and the BaO response rate reaches more than 96.5%, is worthy to be popularized and uses.
Description
Technical field
The present invention relates to a kind of method recycling BaO process titanium dioxide wastewater, belong to technical field of sewage.
Background technology
Titanium white formal name used at school is the amphoteric oxide of TiO 2 pigment, white solid or powder, a kind of important Chinese white and porcelain glaze, is widely used in the industries such as paint, ink, plastics, rubber, papermaking, chemical fibre, watercolors；The manufacture method of titanium dioxide has sulfuric acid process and chloridising, China's present stage produces titanium dioxide and mainly uses sulfuric acid process, Titanium White Production By Sulfuric Acid Process occurs relatively early, have wide range of applications, technology is the most ripe, but Titanium White Production By Sulfuric Acid Process can produce substantial amounts of acid waste water, after this acid waste water can only process by the way of acid-base neutralization, can be only achieved the discharge standard of environmental protection.
Limestone is used to process the acid waste water that Titanium White Production By Sulfuric Acid Process produces at present, can effectively remove sulfate ion in water, heavy metal ion, the pH value in regulation water, its equipment investment is few, processing procedure is simple, technology maturation, but produces substantial amounts of CaSO in processing procedure4Precipitation, seriously reduces the treatment effect of waste water, and this precipitation easily causes secondary pollution to environment, recycle and be worth not quite；Secondly process fund big, the most indirectly increase the cost of operation；Therefore, a kind of method working out recyclable process titanium dioxide wastewater, save the processing cost of titanium dioxide wastewater, reduced and pollute, economic sustainable development has also been had great importance.
Summary of the invention
The technical problem to be solved: produce substantial amounts of CaSO during processing the acid waste water that Titanium White Production By Sulfuric Acid Process produces for legal in limestone4Precipitation, causes secondary environmental pollution, causes the problem that processing cost increases, it is provided that a kind of method recycling BaO process titanium dioxide wastewater, the method processing cost is low, can be from the BaSO of processed titanium dioxide wastewater4Reclaiming BaO in precipitate, turn waste into wealth, the circulation reaching resource effectively utilizes.
For solving above-mentioned technical problem, the present invention uses technical scheme as described below: a kind of recycle the method that BaO processes titanium dioxide wastewater, and its concrete operation step is:
(1) by mass percentage, by 20～active component Fe of 30%2O3With 70～the TiO of 80%2It is placed at normal temperatures in high speed blender, mix and blend 20～40min, prepares Fe2O3/TiO2Two component mixed catalyst systems；
(2) by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 20～30 ° of C, rolls 30～40min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；
(3) by mass percentage, by the Fe behind 20～40% pulverize2O3/TiO2Two component mixed catalyst systems and 60～80% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1500～1600 ° of C, and the baking time is 30～40min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；
(4) titanium dioxide wastewater that barium monoxide processes is passed through funnel-form process in container and separate, obtains BaSO4Precipitate and waste liquid；
(5) by above-mentioned isolated BaSO4Precipitate, dries under temperature is 80～100 ° of C；
(6) by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1500～1600 ° of C, carries out electron irradiation, makes molecule activation；
(7) simultaneously by adding the prepared molecular sieve mixed catalyst of step (3) to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water.
Electron energy and the beam intensity of described electron accelerator are respectively 5MeV, 200 μ A, close rate 100kGy/s.
The principle of the present invention: produced BaSO in the titanium dioxide wastewater that barium monoxide is processed4Precipitate is dried under the conditions of uniform temperature, is placed in electron accelerator and at high temperature carries out electron irradiation, makes molecule activation, changes molecule quantivalence, is simultaneously introduced the Fe prepared by nano titanium oxide, ferrum oxide and molecular sieve2O3/TiO2/ molecular sieve mixed catalyst, to BaSO4Precipitate carries out being catalyzed, reducing, and must process the BaO needed for titanium dioxide wastewater.
The present invention is compared with additive method, and Advantageous Effects is:
(1) BaO can be from BaSO4Reclaiming in precipitate, turn waste into wealth, value is big, and the circulation reaching resource effectively utilizes；
(2) the method processing procedure is simple, low cost, environmentally safe.
Embodiment
The most by mass percentage, by 20～active component Fe of 30%2O3With 70～the TiO of 80%2It is placed at normal temperatures in high speed blender, mix and blend 20～40min, prepares Fe2O3/TiO2Two component mixed catalyst systems；Again by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 20～30 ° of C, rolls 30～40min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；The most by mass percentage, by the Fe behind 20～40% pulverize2O3/TiO2Two component mixed catalyst systems and 60～80% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1500～1600 ° of C, and the baking time is 30～40min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；Then the titanium dioxide wastewater that barium monoxide processes is passed through in funnel-form process container and separates, obtain BaSO4Precipitate and waste liquid；By above-mentioned isolated BaSO4Precipitate, dries under temperature is 80～100 ° of C；Finally by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1500～1600 ° of C, carries out electron irradiation, makes molecule activation；It is simultaneously introduced prepared molecular sieve mixed catalyst to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water.
Electron energy and the beam intensity of described electron accelerator are respectively 5MeV, 200 μ A, close rate 100kGy/s.
The most by mass percentage, by 20% active component Fe2O3With 70% TiO2It is placed at normal temperatures in high speed blender, mix and blend 20min, prepares Fe2O3/TiO2Two component mixed catalyst systems；Again by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 20 ° of C, rolls 30min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；The most by mass percentage, the Fe after pulverizing 20%2O3/TiO2Two component mixed catalyst systems and 60% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1500 ° of C, and the baking time is 30min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；Then the titanium dioxide wastewater that barium monoxide processes is passed through in funnel-form process container and separates, obtain BaSO4Precipitate and waste liquid；By above-mentioned isolated BaSO4Precipitate, dries under temperature is 80 ° of C；Finally by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1500 ° of C, carries out electron irradiation, makes molecule activation；It is simultaneously introduced prepared molecular sieve mixed catalyst to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water；Use electron irradiation, Fe2O3/TiO2The method of/molecular sieve mixed catalyst catalysis reduction, BaO can be from BaSO4Precipitate reclaims, turns waste into wealth, reach effective utilization of resource, greatly reduce the processing cost of sulfate process titanium dioxide waste water；The BaO response rate is 96.5%, is worthy to be popularized and uses.
The most by mass percentage, by 25% active component Fe2O3With 75% TiO2It is placed at normal temperatures in high speed blender, mix and blend 30min, prepares Fe2O3/TiO2Two component mixed catalyst systems；Again by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 25 ° of C, rolls 35min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；The most by mass percentage, by the Fe after 30% pulverize2O3/TiO2Two component mixed catalyst systems and 70% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1550 ° of C, and the baking time is 35min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；Then the titanium dioxide wastewater that barium monoxide processes is passed through in funnel-form process container and separates, obtain BaSO4Precipitate and waste liquid；By above-mentioned isolated BaSO4Precipitate, dries under temperature is 90 ° of C；Finally by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1550 ° of C, carries out electron irradiation, makes molecule activation；It is simultaneously introduced prepared molecular sieve mixed catalyst to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water；Use electron irradiation, Fe2O3/TiO2The method of/molecular sieve mixed catalyst catalysis reduction, BaO can be from BaSO4Precipitate reclaims, turns waste into wealth, reach effective utilization of resource, greatly reduce the processing cost of sulfate process titanium dioxide waste water；The BaO response rate is 96.7%, is worthy to be popularized and uses.
The most by mass percentage, by 30% active component Fe2O3With 80% TiO2It is placed at normal temperatures in high speed blender, mix and blend 40min, prepares Fe2O3/TiO2Two component mixed catalyst systems；Again by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 30 ° of C, rolls 40min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；The most by mass percentage, by the Fe after 40% pulverize2O3/TiO2Two component mixed catalyst systems and 80% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1600 ° of C, and the baking time is 40min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；Then the titanium dioxide wastewater that barium monoxide processes is passed through in funnel-form process container and separates, obtain BaSO4Precipitate and waste liquid；By above-mentioned isolated BaSO4Precipitate, dries under temperature is 100 ° of C；Finally by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1600 ° of C, carries out electron irradiation, makes molecule activation；It is simultaneously introduced prepared molecular sieve mixed catalyst to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water；Use electron irradiation, Fe2O3/TiO2The method of/molecular sieve mixed catalyst catalysis reduction, BaO can be from BaSO4Precipitate reclaims, turns waste into wealth, reach effective utilization of resource, greatly reduce the processing cost of sulfate process titanium dioxide waste water；The BaO response rate is 96.9%, is worthy to be popularized and uses.
Claims (1)
1. one kind recycles the method that BaO processes titanium dioxide wastewater, it is characterised in that concrete operation step is:
(1) by mass percentage, by 20～active component Fe of 30%2O3With 70～the TiO of 80%2It is placed at normal temperatures in high speed blender, mix and blend 20～40min, prepares Fe2O3/TiO2Two component mixed catalyst systems；
(2) by the Fe of above-mentioned gained2O3/TiO2Two component mixed catalyst systems are placed in chaser, and keeping temperature is under 20～30 ° of C, rolls 30～40min, makes Fe2O3And TiO2Grain breakage, and mix homogeneously, standby；
(3) by mass percentage, by the Fe behind 20～40% pulverize2O3/TiO2Two component mixed catalyst systems and 60～80% molecular sieve be placed in curer and carry out high temperature baking, temperature is set to 1500～1600 ° of C, and the baking time is 30～40min, promotes Fe2O3/TiO2Co-melting and redistribute in molecular sieve surface, prepare Fe2O3/TiO2/ molecular sieve catalyst；
(4) titanium dioxide wastewater that barium monoxide processes is passed through funnel-form process in container and separate, obtains BaSO4Precipitate and waste liquid；
(5) by above-mentioned isolated BaSO4Precipitate, dries under temperature is 80～100 ° of C；
(6) by the BaSO of above-mentioned drying and processing4Precipitate is placed in electron accelerator, and controlling temperature is 1500～1600 ° of C, carries out electron irradiation, makes molecule activation；
(7) simultaneously by adding the prepared molecular sieve mixed catalyst of step (3) to BaSO4Precipitate carries out being catalyzed, reducing, and obtains processing the BaO needed for waste water.
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Effective date of registration: 20160928 Address after: 312300 Zhejiang city of Shaoxing province Shangyu city street Shunjie Road No. 645 Applicant after: Zhejiang Demin Machinery Technology Co. Ltd. Address before: 213164 Jiangsu city of Changzhou province Luo Xi Zhen Airport Industrial Park Wang Cai Road No. 10 Applicant before: Changzhou Hao Li Lai Photo-Electricity Science and Technical Co., Ltd. |
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Effective date of registration: 20171207 Address after: 225500 south side of Tongyang West Road, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province Patentee after: Taizhou Qida coating Auxiliaries Co., Ltd. Address before: 312300 Zhejiang city of Shaoxing province Shangyu city street Shunjie Road No. 645 Patentee before: Zhejiang Demin Machinery Technology Co. Ltd. |