CN110078389A - A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology - Google Patents
A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology Download PDFInfo
- Publication number
- CN110078389A CN110078389A CN201910522758.4A CN201910522758A CN110078389A CN 110078389 A CN110078389 A CN 110078389A CN 201910522758 A CN201910522758 A CN 201910522758A CN 110078389 A CN110078389 A CN 110078389A
- Authority
- CN
- China
- Prior art keywords
- calcium hydroxide
- water
- digestion
- surface area
- specific surface
- 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.)
- Pending
Links
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 title claims abstract description 43
- 239000000920 calcium hydroxide Substances 0.000 title claims abstract description 42
- 229910001861 calcium hydroxide Inorganic materials 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 title claims abstract description 23
- 230000004044 response Effects 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000029087 digestion Effects 0.000 claims abstract description 44
- 239000000292 calcium oxide Substances 0.000 claims abstract description 31
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 9
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/02—Lime
- C04B2/04—Slaking
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of high responses and high-specific surface area calcium hydroxide raw powder's production technology comprising the steps of: (1) crushes: the quick lime calcined is crushed；(2) it digests: the quick lime crushed is digested；First chemical addition agent is added in digestion water, then the ratio for being 0.55 ~ 0.70 with ratio of water to material, using premixing machine mixing quick lime and digestion water, into digester；700 revs/min -800 revs/min of digester speed of agitator, 90 DEG C of digester outlet temperature, digest 9-12min；(3) it drying and crushing: after the calcium hydroxide digested is dried at a temperature of 80-110 DEG C, crushes；(4) it is classified: by the calcium hydroxide dried and crushed in grader, being classified with 1000 revs/min -1200 revs/min of revolving speed, obtain high response and high-specific surface area calcium hydroxide powder.The present invention obtains the calcium hydroxide of high response and high-specific surface area by controlling the digestion processes parameters such as suitable ratio of water to material, digestion temperature, digestion time.
Description
Technical field
The invention belongs to calcium hydroxide preparation technical fields, and in particular to a kind of high response and high-specific surface area hydroxide
Calcium raw powder's production technology.
Background technique
The specific surface area of calcium hydroxide powder material has vital influence to gas cleaning and ability.Generally
Come, the specific surface area of calcium hydroxide is bigger, better to the clean-up effect of flue gas.In addition, in water process and environment pollution control side
Face, the calcium hydroxide with high-ratio surface also can preferably come out the pollutant in water and environment.The hydrogen of conventional method preparation
Calcium oxide powder, specific surface area is small, cannot effective purifying smoke.
Summary of the invention
Aiming at the deficiencies in the prior art, the present invention provides a kind of high response and high-specific surface area calcium hydroxide powder
The preparation method of body；The alkaline nature of combining hydrogen oxidation calcium and the high response of high-ratio surface, prepare the hydrogen-oxygen of high response
Change calcium powder body material.
In order to achieve the above object, technical solution of the present invention is as follows:
A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology comprising the steps of:
(1) it crushes: the quick lime calcined is crushed；
(2) it digests: the quick lime crushed is digested；First chemical addition agent is added in digestion water, then with water material
Than the ratio for 0.55 ~ 0.70, using premixing machine mixing quick lime and digestion water, into digester；Digester speed of agitator
700 revs/min -800 revs/min, 90 DEG C of digester outlet temperature, digest 9-12min；It is ripe to react generation with water for lime in digester
Lime, at 350 DEG C hereinafter, its chemical equation are as follows: CaO+H2O→Ca(OH)2+276 (kcal/kg CaO)；
(3) it drying and crushing: after the calcium hydroxide digested is dried at a temperature of 80-110 DEG C, crushes；
(4) it is classified: by the calcium hydroxide dried and crushed in grader, with 1000 revs/min of -1200 revs/min of progress of revolving speed
Classification obtains high response and high-specific surface area calcium hydroxide powder.
Further, the step (2) is added to the formula of the chemical addition agent in digestion water in digestion process are as follows:
Propylene glycol 4 ~ 7%；
Triethanolamine 2 ~ 4%.
Further, the step (1), smashed quick lime granularity control is in 300 ~ 1000 mesh.
Further, the step (2) is added in the formula of the chemical addition agent in water, propylene glycol in digestion process
It is the pure industrial reagent of chemistry with triethanolamine.
Further, the step (2) controls in the water temperature of digestion process, digestion water at 90 ~ 95 DEG C.
Further, the step (2), in digestion process, the boundary point pressure of the water of digestion water is controlled in 2bar G,
Fluctuate 0.3bar.
Further, the step (2), in digestion process, digestion is controlled with quick lime content 91 ~ 96%.
The utility model has the advantages that the present invention, which passes through, controls the digestion processes parameters such as suitable ratio of water to material, digestion temperature, digestion time,
The calcium hydroxide of high response and high-specific surface area is obtained, the specific surface area of calcium hydroxide is up to 30-50m2/g.According to flue gas
Composition, provides the calcium hydroxide of different size specific surface area, to reach desulfurization requirement, while reducing production cost again.
Detailed description of the invention
Fig. 1 is preparation process flow block diagram of the invention.
Specific embodiment
The present invention is described below with reference to specific embodiments.It will be appreciated by those skilled in the art that these embodiments are only
For illustrating the present invention, do not limit the scope of the invention in any way.
Referring to Fig. 1, a kind of high response and high-specific surface area calcium hydroxide raw powder's production technology, include following step
It is rapid:
(1) it crushes: the quick lime calcined is crushed, smashed quick lime granularity control is in 300 ~ 1000 mesh；
(2) it digests: the quick lime crushed is digested；First the triethanolamine of 4 ~ 7% propylene glycol and 2 ~ 4% is added to and is disappeared
Change and use in water, then the ratio for being 0.55 ~ 0.70 with ratio of water to material, using premixing machine mixing quick lime and digestion water, into digestion
Device；700 revs/min -800 revs/min of digester speed of agitator, 90 DEG C of digester outlet temperature, digest 9-12min；Digestion water
For water temperature whole-process control at 90 ~ 95 DEG C, the boundary point pressure control of the water of digestion water fluctuates 0.3bar in 2bar G；It is digesting
Lime is reacted with water in device generates white lime, at 350 DEG C hereinafter, its chemical equation are as follows:
CaO+H2O→Ca(OH)2+276 (kcal/kg CaO)；
(3) it drying and crushing: after the calcium hydroxide digested is dried at a temperature of 80-110 DEG C, crushes；
(4) it is classified: by the calcium hydroxide dried and crushed in grader, with 1000 revs/min of -1200 revs/min of progress of revolving speed
Classification obtains high response and high-specific surface area calcium hydroxide powder.
Wherein, the step (2), in digestion process, during the formula for the chemical addition agent being added in water is, propylene glycol and
Triethanolamine is the pure industrial reagent of chemistry.
Wherein, the step (2), in digestion process, digestion is controlled with quick lime content 91 ~ 96%.
Embodiment 1
A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology comprising the steps of:
(1) it crushes: the quick lime calcined is crushed, smashed quick lime granularity control is in 300 ~ 1000 mesh；
(2) it digests: the quick lime crushed is digested, digestion is controlled with quick lime content 91 ~ 96%；First by 5.5%
Propylene glycol and 2.5% triethanolamine are added in digestion water, then the ratio for being 0.6 with ratio of water to material, use premixing machine mixing life
Lime and digestion water, into digester；750 revs/min of digester speed of agitator, 90 DEG C of digester outlet temperature, digestion
10min；The water temperature whole-process control of digestion water is at 90 DEG C, and the boundary point pressure control of the water of digestion water is in 2bar G, fluctuation
0.3bar；Lime is reacted with water in digester generates white lime, at 350 DEG C hereinafter, its chemical equation are as follows: CaO+H2O→
Ca(OH)2+276 (kcal/kg CaO)；
(3) it drying and crushing: after the calcium hydroxide digested is dried at a temperature of 80-110 DEG C, crushes；
(4) it is classified: by the calcium hydroxide dried and crushed in grader, being classified with 1100 revs/min of revolving speed, obtained high
Reactivity and high-specific surface area calcium hydroxide powder.
Wherein, the step (2), in digestion process, during the formula for the chemical addition agent being added in water is, propylene glycol and
Triethanolamine is the pure industrial reagent of chemistry.
The specific surface area that the present embodiment obtains calcium hydroxide is detected as 50m2/g。
Claims (7)
1. a kind of high response and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that comprise the steps of:
(1) it crushes: the quick lime calcined is crushed；
(2) it digests: the quick lime crushed is digested；First chemical addition agent is added in digestion water, then with water material
Than the ratio for 0.55 ~ 0.70, using premixing machine mixing quick lime and digestion water, into digester；Digester speed of agitator
700 revs/min -800 revs/min, 90 DEG C of digester outlet temperature, digest 9-12min；It is ripe to react generation with water for lime in digester
Lime, at 350 DEG C hereinafter, its chemical equation are as follows: CaO+H2O→Ca(OH)2+276 (kcal/kg CaO)；
(3) it drying and crushing: after the calcium hydroxide digested is dried at a temperature of 80-110 DEG C, crushes；
(4) it is classified: by the calcium hydroxide dried and crushed in grader, with 1000 revs/min of -1200 revs/min of progress of revolving speed
Classification obtains high response and high-specific surface area calcium hydroxide powder.
2. high response as described in claim 1 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that institute
It states step (1), smashed quick lime granularity control is in 300 ~ 1000 mesh.
3. high response as described in claim 1 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that packet
Containing following steps: the step (2) is added to the formula of the chemical addition agent in digestion water in digestion process are as follows:
Propylene glycol 4 ~ 7%；
Triethanolamine 2 ~ 4%.
4. high response as claimed in claim 2 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that institute
Step (2) are stated, in digestion process, the formula for the chemical addition agent being added in water is that propylene glycol and triethanolamine are that chemistry is pure
Industrial reagent.
5. high response as described in claim 1 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that institute
Step (2) are stated, are controlled in the water temperature of digestion process, digestion water at 90 ~ 95 DEG C.
6. high response as described in claim 1 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that institute
Step (2) are stated, in digestion process, the boundary point pressure control of the water of digestion water fluctuates 0.3bar in 2bar G.
7. high response as described in claim 1 and high-specific surface area calcium hydroxide raw powder's production technology, which is characterized in that institute
Step (2) are stated, in digestion process, digestion is controlled with quick lime content 91 ~ 96%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522758.4A CN110078389A (en) | 2019-06-17 | 2019-06-17 | A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910522758.4A CN110078389A (en) | 2019-06-17 | 2019-06-17 | A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology |
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| CN110078389A true CN110078389A (en) | 2019-08-02 |
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| CN201910522758.4A Pending CN110078389A (en) | 2019-06-17 | 2019-06-17 | A kind of high response and high-specific surface area calcium hydroxide raw powder's production technology |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818287A (en) * | 2019-12-30 | 2020-02-21 | 衢州顺天钙业有限公司 | Preparation method of high-dispersity and high-specific-surface-area calcium hydroxide |
| CN111517677A (en) * | 2020-04-20 | 2020-08-11 | 池州市贵兴非矿新材料有限公司 | Processing method of calcium hydroxide powder |
| CN111807402A (en) * | 2020-06-22 | 2020-10-23 | 浙江布石新材料有限公司 | Preparation method of high-specific-surface-area calcium hydroxide for treating incineration waste |
| CN112358205A (en) * | 2020-11-27 | 2021-02-12 | 广西合山市华纳新材料科技有限公司 | Preparation method of high-activity calcium hydroxide |
| CN113736288A (en) * | 2020-05-29 | 2021-12-03 | 广西夏阳环保科技有限公司 | Preparation method of modified calcium hydroxide special for coating |
| CN114538799A (en) * | 2021-10-18 | 2022-05-27 | 浙江天石纳米科技股份有限公司 | Preparation method of calcium hydroxide powder with cluster-shaped meristematic structure and ultra-high specific surface area |
| CN114772951A (en) * | 2022-05-17 | 2022-07-22 | 南京赤博环保科技有限公司 | Calcium hydroxide and preparation method and application thereof |
| CN115073023A (en) * | 2022-07-13 | 2022-09-20 | 建德华明科技有限公司 | Preparation method of hydrated lime for efficient desulfurization |
| CN115159869A (en) * | 2022-07-13 | 2022-10-11 | 建德华明科技有限公司 | Production equipment and method of porous high-specific-surface-area calcium hydroxide |
| CN115403281A (en) * | 2022-09-30 | 2022-11-29 | 西安建筑科技大学 | High-specific surface and high-activity calcium hydroxide and industrial preparation method thereof |
| CN115872430A (en) * | 2022-12-19 | 2023-03-31 | 广西华纳新材料股份有限公司 | Preparation method of calcium hydroxide with controllable specific surface area |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818287A (en) * | 2019-12-30 | 2020-02-21 | 衢州顺天钙业有限公司 | Preparation method of high-dispersity and high-specific-surface-area calcium hydroxide |
| CN111517677A (en) * | 2020-04-20 | 2020-08-11 | 池州市贵兴非矿新材料有限公司 | Processing method of calcium hydroxide powder |
| CN113736288A (en) * | 2020-05-29 | 2021-12-03 | 广西夏阳环保科技有限公司 | Preparation method of modified calcium hydroxide special for coating |
| CN111807402B (en) * | 2020-06-22 | 2022-06-17 | 浙江布石新材料有限公司 | Preparation method of high-specific-surface-area calcium hydroxide for treating incineration waste |
| CN111807402A (en) * | 2020-06-22 | 2020-10-23 | 浙江布石新材料有限公司 | Preparation method of high-specific-surface-area calcium hydroxide for treating incineration waste |
| CN112358205A (en) * | 2020-11-27 | 2021-02-12 | 广西合山市华纳新材料科技有限公司 | Preparation method of high-activity calcium hydroxide |
| CN114538799A (en) * | 2021-10-18 | 2022-05-27 | 浙江天石纳米科技股份有限公司 | Preparation method of calcium hydroxide powder with cluster-shaped meristematic structure and ultra-high specific surface area |
| CN114538799B (en) * | 2021-10-18 | 2022-09-13 | 浙江天石纳米科技股份有限公司 | Preparation method of calcium hydroxide powder with cluster-shaped meristematic structure and ultra-high specific surface area |
| CN114772951A (en) * | 2022-05-17 | 2022-07-22 | 南京赤博环保科技有限公司 | Calcium hydroxide and preparation method and application thereof |
| CN115073023A (en) * | 2022-07-13 | 2022-09-20 | 建德华明科技有限公司 | Preparation method of hydrated lime for efficient desulfurization |
| CN115159869A (en) * | 2022-07-13 | 2022-10-11 | 建德华明科技有限公司 | Production equipment and method of porous high-specific-surface-area calcium hydroxide |
| CN115403281A (en) * | 2022-09-30 | 2022-11-29 | 西安建筑科技大学 | High-specific surface and high-activity calcium hydroxide and industrial preparation method thereof |
| CN115872430A (en) * | 2022-12-19 | 2023-03-31 | 广西华纳新材料股份有限公司 | Preparation method of calcium hydroxide with controllable specific surface area |
| CN115872430B (en) * | 2022-12-19 | 2024-03-26 | 广西华纳新材料股份有限公司 | Preparation method of calcium hydroxide with controllable specific surface area |
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Effective date of registration: 20220114 Address after: 421300 Pingtang Road, Jinlong Industrial Park, Kaiyun Town, Hengshan County, Hengyang City, Hunan Province Applicant after: Hunan Bi into Polytron Technologies Inc. Address before: 421000 household 601, No. 22, Zhangfei lane, Yanfeng District, Hengyang City, Hunan Province Applicant before: Deng Jinying |
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