CN103408039A - Process and equipment for recycling alkali from cubic boron nitride synthesis tailings - Google Patents
Process and equipment for recycling alkali from cubic boron nitride synthesis tailings Download PDFInfo
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- CN103408039A CN103408039A CN2013103786331A CN201310378633A CN103408039A CN 103408039 A CN103408039 A CN 103408039A CN 2013103786331 A CN2013103786331 A CN 2013103786331A CN 201310378633 A CN201310378633 A CN 201310378633A CN 103408039 A CN103408039 A CN 103408039A
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- boron nitride
- alkali
- cubic boron
- ionic membrane
- vacuum tank
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Abstract
The invention relates to a process and equipment for recycling alkali from cubic boron nitride synthesis tailings. The process comprises the steps of collecting, filtering and distilling waste alkali liquor and collecting alkali blocks. The equipment comprises a liquid storage tank, an ionic membrane filtering device, a vacuum tank, a vacuum pump and a thermal insulation furnace; the liquid outlet of the liquid storage tank is communicated with the liquid inlet of the ionic membrane filtering device; the liquid outlet of the ionic membrane filtering device is communicated with the liquid inlet of the vacuum tank; the liquid outlet of the vacuum tank is communicated with the thermal insulation furnace; the air outlet at the upper end of the vacuum tank is connected with the vacuum pump; and an impurity outlet is arranged on the ionic membrane filtering device. According to the invention, hexagonal boron nitride in cubic boron nitride synthesis tailings is filtered out through the ionic membrane filtering device, and therefore the purpose of recovering hexagonal boron nitride is reached; moisture in alkali liquor without hexagonal boron nitride is evaporated out so as to obtain solid alkali, and therefore the purpose of recovering alkali is reached; sewage discharge is reduced; the environment is protected; waste of raw materials is reduced; and the production cost is reduced.
Description
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Technical field:
The invention belongs to the high production technical field that is pressed into of superhard material, be specifically related to alkali recovery process and recovery system in the synthetic tailing of a kind of cubic boron nitride.
Background technology:
In superhard material was synthetic, synthetic cubic boron nitride, after shaking table is processed, only had the part hexagonal boron nitride to be converted into cubic boron nitride, so can contain the part hexagonal boron nitride in synthetic cubic boron nitride.In high pressure synthesizing cubic boron nitride process, to, with agalmatolite as pressure transmission and thermal insulation medium, agalmatolite will be brought in cubic boron nitride like this, and these two kinds of impurity must at high temperature react and could process totally by alkali in addition.In treating processes, be mixed in fully in cubic boron nitride due to hexagonal boron nitride and agalmatolite, so just must have added excessive caustic soda guarantee Impurity removal is clean.But after processing totally, excessive alkali lye does not also react and has just directly outwelled, and so not only causes the significant wastage of raw material, to environment, causes certain pollution yet.Alkali is exactly sodium hydroxide, is very easy to be dissolved in the water, and directly enters in sewage if will contain the water of sodium hydroxide, will cause very large pollution to environment.Therefore must utilize the waste water control facility that sewage is neutralized into to neutrality just can discharge, can increase so no small input and waste water control workload.
Summary of the invention:
In sum; for overcoming the deficiencies in the prior art; the invention provides alkali recovery process and recovery system in the synthetic tailing of a kind of cubic boron nitride; it is to filter out the hexagonal boron nitride in the synthetic tailing of cubic boron nitride by the ionic membrane filter plant; reach the purpose that reclaims hexagonal boron nitride; filter out hexagonal boron nitride alkali lye afterwards; evaporate the moisture in alkali lye; obtain solid-state alkali; thereby reach the purpose that reclaims alkali, thereby reduce sewage discharge, protection of the environment; reduce again simultaneously the waste of raw material, reduce production costs.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
Alkali recovery process in the synthetic tailing of a kind of cubic boron nitride, wherein: comprise following processing step:
A, waste lye are collected
After being collected, pours in container for storing liquid reacted alkali lye;
B, filtration
Alkali lye in container for storing liquid is sent into to the ionic membrane filtration unit, filter out the cubic boron nitride particle in alkali lye;
C, distillation
Alkali lye after filtering is heated on holding furnace, fully evaporate the moisture in alkali lye;
D, sodium carbonate are collected
Preservation is collected and sealed to sodium carbonate on holding furnace after distillation.
Technical scheme of the present invention can also be achieved in that in described c, distilation steps, distills 15-25 kilogram alkali lye at every turn.
Technical scheme of the present invention can also be achieved in that in described c, distilation steps, after distillation, is incubated 1-2 hour at 105-115 ℃ of temperature.
Alkali recovery process recovery system used in the synthetic tailing of above-mentioned cubic boron nitride, wherein: comprise container for storing liquid, ionic membrane filtration unit, vacuum tank, vacuum pump and holding furnace, the liquid outlet of described container for storing liquid is communicated with the fluid inlet of ionic membrane filtration unit, the liquid outlet of ionic membrane filtration unit is communicated with the fluid inlet of vacuum tank, the liquid outlet of vacuum tank is communicated with holding furnace, the air outlet of vacuum tank upper end is connected with vacuum pump, on described ionic membrane filtration unit, is provided with the impurity outlet.
Technical scheme of the present invention can also be achieved in that described container for storing liquid is the stainless steel container for storing liquid.
Technical scheme of the present invention can also be achieved in that on described vacuum tank and be provided with vacuum meter.
Technical scheme of the present invention can also be achieved in that on the liquid outlet of described container for storing liquid and be provided with stopping valve, in impurity outlet on described ionic membrane filtration unit, be provided with eduction valve, be provided with flapper valve on the liquid outlet of described vacuum tank and air outlet.
Beneficial effect of the present invention is:
1, the present invention filters out the hexagonal boron nitride in the synthetic tailing of cubic boron nitride by the ionic membrane filter plant; reach the purpose that reclaims hexagonal boron nitride; filter out hexagonal boron nitride alkali lye afterwards; evaporate the moisture in alkali lye, obtain solid-state alkali, thereby reach the purpose that reclaims alkali; thereby minimizing sewage discharge; protection of the environment, reduce again the waste of raw material simultaneously, reduces production costs.
2, the present invention adopts the ionic membrane filtration unit to filter hexagonal boron nitride and other impurity in tailing, and specific filtration resistance is thoroughly clean, thereby provides convenience for follow-up distil process, guarantees the purity of the sodium carbonate reclaimed, and facilitates sodium carbonate again to utilize.
3, recovery system of the present invention is simple in structure, easy to use, with low cost, can effectively reclaim hexagonal boron nitride and sodium carbonate in the synthetic tailing of cubic boron nitride, the waste that economizes in raw materials, reduce enterprise's production cost, reducing polluted emission, improve enterprise competitiveness.
The accompanying drawing explanation:
Fig. 1 is structural representation of the present invention.
Embodiment:
The present invention is described in further detail below in conjunction with accompanying drawing.
Alkali recovery process in the synthetic tailing of a kind of cubic boron nitride comprises following processing step:
A, waste lye are collected
After being collected, pours in container for storing liquid 1 reacted alkali lye;
B, filtration
Alkali lye in container for storing liquid 1 is sent into to ionic membrane filtration unit 3, filter out the cubic boron nitride particle in alkali lye;
C, distillation
Alkali lye after filtering is heated on holding furnace 9, heat 20 kilograms of alkali lye at every turn, at 110 ℃ of temperature, be incubated 1 hour after distillation, fully evaporate the moisture in alkali lye.
D, sodium carbonate are collected
Preservation is collected and sealed to sodium carbonate on holding furnace 9 after distillation.
As shown in Figure 1, alkali recovery equipment in the synthetic tailing of a kind of cubic boron nitride, comprise container for storing liquid 1, ionic membrane filtration unit 3, vacuum tank 5, vacuum pump 7 and holding furnace 9, described container for storing liquid 1 is stainless steel container for storing liquid 1, the liquid outlet of container for storing liquid 1 is communicated with the fluid inlet of ionic membrane filtration unit 3, on the liquid outlet of container for storing liquid 1, be provided with stopping valve 2, the liquid outlet of ionic membrane filtration unit 3 is communicated with the fluid inlet of vacuum tank 5, the liquid outlet of vacuum tank 5 is communicated with holding furnace 9, the air outlet of vacuum tank 5 upper ends is connected with vacuum pump 7, on the liquid outlet of described vacuum tank 5 and air outlet, be provided with flapper valve 6, on described ionic membrane filtration unit 3, be provided with the impurity outlet, in impurity outlet on described ionic membrane filtration unit 3, be provided with eduction valve 4.
During use, open stopping valve 2, alkali lye in container for storing liquid 1 flows into ionic membrane filtration unit 3, start vacuum pump 7, vacuum pump 7 will vacuumize in vacuum tank 5, alkali lye after ionic membrane filtration unit 3 filters enters vacuum tank 5 under differential pressure action interior temporary, open the flapper valve 6 on the liquid outlet of vacuum tank 5, alkali lye in vacuum tank 5 flows into holding furnace 9, in holding furnace 9, distill, after evaporating moisture, solid-state sodium carbonate is retained in holding furnace 9, collect solid-state sodium carbonate sealing and preserve, thereby reach the purpose that reclaims sodium carbonate.
Open eduction valve 4, the hexagonal boron nitride that ionic membrane filtration unit 3 inner filtrations go out and impurity flow out along the impurity outlet, recyclable hexagonal boron nitride.
Be noted that, above-described embodiment is to the explanation of technical solution of the present invention and unrestricted, other modification that is equal to replacement or makes according to prior art of affiliated technical field those of ordinary skill, as long as do not exceed thinking and the scope of technical solution of the present invention, within all should being included in interest field of the presently claimed invention.
Claims (7)
1. a cubic boron nitride synthesizes alkali recovery process in tailing, it is characterized in that: comprise following processing step:
A, waste lye are collected
After being collected, pours in container for storing liquid (1) reacted alkali lye;
B, filtration
Alkali lye in container for storing liquid (1) is sent into to ionic membrane filtration unit (3), filter out the cubic boron nitride particle in alkali lye;
C, distillation
Alkali lye after filtering, in the upper heating of holding furnace (9), is fully evaporated to the moisture in alkali lye;
D, sodium carbonate are collected
Preservation is collected and sealed to sodium carbonate after distilling on holding furnace (9).
2. alkali recovery process in the synthetic tailing of cubic boron nitride according to claim 1 is characterized in that: in described c, distilation steps, distill 15-25 kilogram alkali lye at every turn.
3. alkali recovery process in the synthetic tailing of cubic boron nitride according to claim 1, is characterized in that: in described c, distilation steps, after distillation, be incubated 1-2 hour at 105-115 ℃ of temperature.
4. cubic boron nitride as claimed in claim 1 synthesizes alkali recovery process recovery system used in tailing, it is characterized in that: comprise container for storing liquid (1), ionic membrane filtration unit (3), vacuum tank (5), vacuum pump (7) and holding furnace (9), the liquid outlet of described container for storing liquid (1) is communicated with the fluid inlet of ionic membrane filtration unit (3), the liquid outlet of ionic membrane filtration unit (3) is communicated with the fluid inlet of vacuum tank (5), the liquid outlet of vacuum tank (5) is communicated with holding furnace (9), the air outlet of vacuum tank (5) upper end is connected with vacuum pump (7), on described ionic membrane filtration unit (3), be provided with the impurity outlet.
5. according to alkali recovery equipment in the synthetic tailing of cubic boron nitride claimed in claim 4, it is characterized in that: described container for storing liquid (1) is the stainless steel container for storing liquid.
6. alkali recovery equipment in the synthetic tailing of cubic boron nitride according to claim 4, is characterized in that: on described vacuum tank (5), be provided with vacuum meter (8).
7. cubic boron nitride according to claim 4 synthesizes alkali recovery equipment in tailing, it is characterized in that: on the liquid outlet of described container for storing liquid (1), be provided with stopping valve (2), in impurity outlet on described ionic membrane filtration unit (3), be provided with eduction valve (4), on the liquid outlet of described vacuum tank (5) and air outlet, be provided with flapper valve (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310378633.1A CN103408039B (en) | 2013-08-28 | 2013-08-28 | Process and equipment for recycling alkali from cubic boron nitride synthesis tailings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310378633.1A CN103408039B (en) | 2013-08-28 | 2013-08-28 | Process and equipment for recycling alkali from cubic boron nitride synthesis tailings |
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| CN103408039A true CN103408039A (en) | 2013-11-27 |
| CN103408039B CN103408039B (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108310886A (en) * | 2018-03-20 | 2018-07-24 | 陶丽 | A kind of haze purification device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4169131A (en) * | 1977-10-05 | 1979-09-25 | Nittetu Chemical Engineering Limited | Process for recovering caustic alkali from spent alkali liquor |
| JPS59162129A (en) * | 1983-02-28 | 1984-09-13 | Kawasaki Heavy Ind Ltd | Recovery of sodium hydroxide from pulp waste |
| CN1736892A (en) * | 2005-08-08 | 2006-02-22 | 南京工业大学 | Method for recycling sodium hydroxide from pigment containing alkali waste liquid |
| CN101070166A (en) * | 2007-02-14 | 2007-11-14 | 湖州东洋水处理设备有限公司 | Method and apparatus for purifying and recovering silking dirt alkali adopting superfiltering film |
| CN101549912A (en) * | 2008-10-29 | 2009-10-07 | 浙江东洋环境工程有限公司 | Mercerized waste alkali recovery process and system thereof |
| CN202490504U (en) * | 2012-03-01 | 2012-10-17 | 华南师范大学 | Purification recovery device of mercerizing waste alkali liquor |
| CN203428932U (en) * | 2013-08-28 | 2014-02-12 | 郑州中南杰特超硬材料有限公司 | Alkaline recycling device in cubic boron nitride synthesis tailing material |
-
2013
- 2013-08-28 CN CN201310378633.1A patent/CN103408039B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4169131A (en) * | 1977-10-05 | 1979-09-25 | Nittetu Chemical Engineering Limited | Process for recovering caustic alkali from spent alkali liquor |
| JPS59162129A (en) * | 1983-02-28 | 1984-09-13 | Kawasaki Heavy Ind Ltd | Recovery of sodium hydroxide from pulp waste |
| CN1736892A (en) * | 2005-08-08 | 2006-02-22 | 南京工业大学 | Method for recycling sodium hydroxide from pigment containing alkali waste liquid |
| CN101070166A (en) * | 2007-02-14 | 2007-11-14 | 湖州东洋水处理设备有限公司 | Method and apparatus for purifying and recovering silking dirt alkali adopting superfiltering film |
| CN101549912A (en) * | 2008-10-29 | 2009-10-07 | 浙江东洋环境工程有限公司 | Mercerized waste alkali recovery process and system thereof |
| CN202490504U (en) * | 2012-03-01 | 2012-10-17 | 华南师范大学 | Purification recovery device of mercerizing waste alkali liquor |
| CN203428932U (en) * | 2013-08-28 | 2014-02-12 | 郑州中南杰特超硬材料有限公司 | Alkaline recycling device in cubic boron nitride synthesis tailing material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108310886A (en) * | 2018-03-20 | 2018-07-24 | 陶丽 | A kind of haze purification device |
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| CN103408039B (en) | 2014-12-10 |
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