CN106732334A - A kind of modified kwan-yin earth adsorbing and its preparation method and application - Google Patents
A kind of modified kwan-yin earth adsorbing and its preparation method and application Download PDFInfo
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- CN106732334A CN106732334A CN201611113636.2A CN201611113636A CN106732334A CN 106732334 A CN106732334 A CN 106732334A CN 201611113636 A CN201611113636 A CN 201611113636A CN 106732334 A CN106732334 A CN 106732334A
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- parts
- dpg
- paregal
- white clay
- kwan
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
Abstract
The invention discloses a kind of modified kwan-yin earth adsorbing and its preparation method and application, the adsorbent is made up of the following raw material according to weight portion：34 42 parts of white clay, 26 parts of paregal O, 5 13 parts of tannic acid, 13 21 parts of DPG.By white clay and paregal O mixed grinding, DPG solution heated sealed stir process is subsequently adding, then heats up and tannic acid is added dropwise, ultrasonically treated after cooling, stirring to dry, high-temperature calcination obtains final product adsorbent.White clay and paregal O mixed grinding by obtained adsorbent after DPG, tannin acid treatment, are promoted specific surface area to improve by the present invention, are applied to gas mercury treatment, demercuration efficiency is greatly improved, and reach more than 95%.Present invention process is simple, technological process is short, with low cost, is easy to promote the use of on a large scale, can reuse, and demercuration cost can be greatly lowered.
Description
Technical field
The present invention relates to technical field of atmospheric pollution control, specifically a kind of modified kwan-yin earth adsorbing and preparation method thereof
And application.
Background technology
Coal removes SO, NO as the whole industrial most important energy, the pollutant that coal combustion is producedxAnd CO2Outward, also respectively
The mercury of form is planted, substantial amounts of mercury causes direct or potentially hazardous to human health in being released to air.The Mercury in Coal of China
Mass fraction average value be 0.22mg/kg.Due to a large amount of burnings of coal, the mercury total amount for being escaped from fire coal every year reaches 1590t
More than, account for global 50%.During burning of coal, the mercury vapour in coal is turned to gaseous mercury (Hg by high temperature0), with combustion
The cooling and gaseous mercury for burning gas are acted on other comburants, generate oxidation state mercury (Hg2+) and particulate Hg (Hgp), this three
Plant mercury and be collectively referred to as total mercury.
Flue gas demercuration ability how is improved, realizes that the feasible flue gas demercuration of economical and efficient turns into the focus of current research, state
Inside and outside demercuration technology main at present includes：Pollutant catabolic gene equipment demercuration, coal additive demercuration, adsorbent demercuration, oxidation are de-
Several classes of mercury.Using existing pollutant catabolic gene device demercuration, mainly to common dust arrester, wet desulphurization device, SCR denitration
Device is improved appropriately, and its investment is smaller, implements simple and easy to apply, but is only capable of removing Hg0, it is impossible to remove Hg2+, total is de-
Mercury is less efficient；Coal additive demercuration can be with the efficient oxidation Hg0, efficiency is higher, and operating cost is relatively low, but there is additive
Later stage processes complex problem；Adsorbent demercuration efficiency is higher, and scrap build and operation are simple, but there is operating cost
It is higher, influence the later stage treatment of flying dust to utilize；Oxidation demercuration is using oxidizing Hg0, its demercuration efficiency is higher, equipment fortune
Row is simple, but there is etching problem of the oxidant for equipment.At present using the existing dedusting equipment collaboration demercuration of improvement
It is both economical method, but as the requirement more and more higher of environmental regulation, adsorbent demercuration and oxidation demercuration are only future
Developing direction.
White clay is to be piled up to form by volcanic ash, is with a kind of widest soil media.Demercuration field apply compared with
Few, have plenty of has what fabulous demercuration raw material was prepared with other, the effect extreme difference of single white clay.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of modified kwan-yin earth adsorbing and its preparation method and application
The problem proposed in background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of modified kwan-yin earth adsorbing, is made up of the following raw material according to weight portion：White clay 34-42 parts, paregal O
2-6 parts, tannic acid 5-13 parts, DPG 13-21 parts.
As further scheme of the invention：Modified kwan-yin earth adsorbing, by the following raw material group according to weight portion
Into：White clay 36-40 parts, paregal O 3-5 parts, tannic acid 7-11 parts, DPG 15-19 parts.
As further scheme of the invention：Modified kwan-yin earth adsorbing, by the following raw material group according to weight portion
Into：38 parts of white clay, 4 parts of paregal O, 9 parts of tannic acid, 17 parts of DPG.
Another object of the present invention is to provide a kind of preparation method of modified kwan-yin earth adsorbing, comprises the steps of：
1) deionized water of 7.8 times of DPG and its quality is mixed, DPG solution is obtained；
2) by white clay and paregal O mixed grinding, 120 mesh sieves excessively, DPG solution is subsequently adding, is warming up to 77 DEG C
And stir process 1.3h is sealed at such a temperature, then heat to 92 DEG C and tannic acid is added dropwise, after being added dropwise to complete at such a temperature
Stirring 10min, is then down to 65 DEG C and ultrasonically treated 45min, and ultrasonic power is 800W, then is stirred at a temperature of 99-101 DEG C
To dry, 4.1h then calcined in 450 DEG C of Muffle furnace and obtains final product adsorbent.
Another object of the present invention is to provide application of the adsorbent in gas mercury treatment.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention by white clay and paregal O mixed grinding, by obtained absorption after DPG, tannin acid treatment
Agent, specific surface area is improved, and demercuration efficiency is greatly improved, and reaches more than 95%, and mechanical strength is also increased slightly.This hair
Bright process is simple, technological process are short, with low cost, are easy to promote the use of on a large scale, can reuse, and can be greatly lowered
Demercuration cost.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of modified kwan-yin earth adsorbing is made up of the following raw material according to weight portion：White clay
34 parts, 2 parts of paregal O, 5 parts of tannic acid, 13 parts of DPG.
7.8 times of deionized water of DPG and its quality is mixed, DPG solution is obtained.By white clay with it is average
Plus O mixed grindings, 120 mesh sieves excessively, DPG solution is subsequently adding, it is warming up to 77 DEG C and seals stir process at such a temperature
1.3h, then heats to 92 DEG C and tannic acid is added dropwise, and stirs 10min after being added dropwise to complete at such a temperature, is then down to 65 DEG C simultaneously
Ultrasonically treated 45min, ultrasonic power is 800W, then is stirred at a temperature of 99 DEG C to dry, is then forged in 450 DEG C of Muffle furnace
Burn 4.1h and obtain final product adsorbent.
Embodiment 2
In the embodiment of the present invention, a kind of modified kwan-yin earth adsorbing is made up of the following raw material according to weight portion：White clay
42 parts, 6 parts of paregal O, 13 parts of tannic acid, 21 parts of DPG.
7.8 times of deionized water of DPG and its quality is mixed, DPG solution is obtained.By white clay with it is average
Plus O mixed grindings, 120 mesh sieves excessively, DPG solution is subsequently adding, it is warming up to 77 DEG C and seals stir process at such a temperature
1.3h, then heats to 92 DEG C and tannic acid is added dropwise, and stirs 10min after being added dropwise to complete at such a temperature, is then down to 65 DEG C simultaneously
Ultrasonically treated 45min, ultrasonic power is 800W, then is stirred at a temperature of 101 DEG C to dry, then in 450 DEG C of Muffle furnace
Calcining 4.1h obtains final product adsorbent.
Embodiment 3
In the embodiment of the present invention, a kind of modified kwan-yin earth adsorbing is made up of the following raw material according to weight portion：White clay
36 parts, 3 parts of paregal O, 7 parts of tannic acid, 15 parts of DPG.
7.8 times of deionized water of DPG and its quality is mixed, DPG solution is obtained.By white clay with it is average
Plus O mixed grindings, 120 mesh sieves excessively, DPG solution is subsequently adding, it is warming up to 77 DEG C and seals stir process at such a temperature
1.3h, then heats to 92 DEG C and tannic acid is added dropwise, and stirs 10min after being added dropwise to complete at such a temperature, is then down to 65 DEG C simultaneously
Ultrasonically treated 45min, ultrasonic power is 800W, then is stirred at a temperature of 100 DEG C to dry, then in 450 DEG C of Muffle furnace
Calcining 4.1h obtains final product adsorbent.
Embodiment 4
In the embodiment of the present invention, a kind of modified kwan-yin earth adsorbing is made up of the following raw material according to weight portion：White clay
40 parts, 5 parts of paregal O, 11 parts of tannic acid, 19 parts of DPG.
7.8 times of deionized water of DPG and its quality is mixed, DPG solution is obtained.By white clay with it is average
Plus O mixed grindings, 120 mesh sieves excessively, DPG solution is subsequently adding, it is warming up to 77 DEG C and seals stir process at such a temperature
1.3h, then heats to 92 DEG C and tannic acid is added dropwise, and stirs 10min after being added dropwise to complete at such a temperature, is then down to 65 DEG C simultaneously
Ultrasonically treated 45min, ultrasonic power is 800W, then is stirred at a temperature of 100 DEG C to dry, then in 450 DEG C of Muffle furnace
Calcining 4.1h obtains final product adsorbent.
Embodiment 5
In the embodiment of the present invention, a kind of modified kwan-yin earth adsorbing is made up of the following raw material according to weight portion：White clay
38 parts, 4 parts of paregal O, 9 parts of tannic acid, 17 parts of DPG.
7.8 times of deionized water of DPG and its quality is mixed, DPG solution is obtained.By white clay with it is average
Plus O mixed grindings, 120 mesh sieves excessively, DPG solution is subsequently adding, it is warming up to 77 DEG C and seals stir process at such a temperature
1.3h, then heats to 92 DEG C and tannic acid is added dropwise, and stirs 10min after being added dropwise to complete at such a temperature, is then down to 65 DEG C simultaneously
Ultrasonically treated 45min, ultrasonic power is 800W, then is stirred at a temperature of 100 DEG C to dry, then in 450 DEG C of Muffle furnace
Calcining 4.1h obtains final product adsorbent.
Comparative example 1
In addition to paregal O is not contained, its material content and preparation process are consistent with embodiment 5.
Comparative example 2
In addition to DPG is not contained, its material content and preparation process are consistent with embodiment 5.
Comparative example 3
In addition to paregal O and DPG is not contained, its material content and preparation process are consistent with embodiment 5.
Embodiment 6
Certain fly ash in electric power plant base flue gas is entered respectively using the adsorbent obtained by above-described embodiment 1-5 and comparative example 1-3
The treatment of row demercuration, as a result as shown in table 1.
Table 1
| Mercury removal rate (%) | Mechanical strength (N/mm) | |
| Embodiment 1 | 96.5 | 2.8 |
| Embodiment 2 | 97.2 | 2.9 |
| Embodiment 3 | 98.8 | 3.0 |
| Embodiment 4 | 99.0 | 3.2 |
| Embodiment 5 | 99.5 | 3.5 |
| Comparative example 1 | 75.6 | 2.1 |
| Comparative example 2 | 46.2 | 2.6 |
| Comparative example 3 | 38.9 | 2.0 |
From contrast experiment as can be seen that there is more preferable mercury using the adsorbent that preparation method disclosed by the invention is prepared
Removal efficiency, and be also increased slightly in mechanical strength, this is that those skilled in the art cannot predict, and is achieved unexpected
Technique effect.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (5)
1. a kind of modified kwan-yin earth adsorbing, it is characterised in that be made up of the following raw material according to weight portion：White clay 34-42
Part, paregal O 2-6 parts, tannic acid 5-13 parts, DPG 13-21 parts.
2. modified kwan-yin earth adsorbing according to claim 1, it is characterised in that by the following raw material group according to weight portion
Into：White clay 36-40 parts, paregal O 3-5 parts, tannic acid 7-11 parts, DPG 15-19 parts.
3. modified kwan-yin earth adsorbing according to claim 1, it is characterised in that by the following raw material group according to weight portion
Into：38 parts of white clay, 4 parts of paregal O, 9 parts of tannic acid, 17 parts of DPG.
4. the preparation method of a kind of modified kwan-yin earth adsorbing as described in claim 1-3 is any, it is characterised in that by following
Step is constituted：
1) deionized water of 7.8 times of DPG and its quality is mixed, DPG solution is obtained；
2) by white clay and paregal O mixed grinding, cross 120 mesh sieves, be subsequently adding DPG solution, be warming up to 77 DEG C and
Stir process 1.3h is sealed at this temperature, 92 DEG C is then heated to and tannic acid is added dropwise, stirred at such a temperature after being added dropwise to complete
10min, is then down to 65 DEG C and ultrasonically treated 45min, and ultrasonic power is 800W, then stirred at a temperature of 99-101 DEG C to
It is dry, 4.1h is then calcined in 450 DEG C of Muffle furnace and obtains final product adsorbent.
5. application of the adsorbent as described in claim 1-3 is any in gas mercury treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611113636.2A CN106732334A (en) | 2016-12-07 | 2016-12-07 | A kind of modified kwan-yin earth adsorbing and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611113636.2A CN106732334A (en) | 2016-12-07 | 2016-12-07 | A kind of modified kwan-yin earth adsorbing and its preparation method and application |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642696A (en) * | 2009-09-11 | 2010-02-10 | 华中科技大学 | Synthesis method for elemental mercury sorbent |
| CN102389776A (en) * | 2011-10-09 | 2012-03-28 | 广东省生态环境与土壤研究所 | Metal heavy absorbent and preparation method and use thereof |
| CN103480347A (en) * | 2013-10-11 | 2014-01-01 | 天津汉晴环保科技有限公司 | Preparation method of composite flat membrane for adsorbing heavy metal ions and product thereof |
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2016
- 2016-12-07 CN CN201611113636.2A patent/CN106732334A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642696A (en) * | 2009-09-11 | 2010-02-10 | 华中科技大学 | Synthesis method for elemental mercury sorbent |
| CN102389776A (en) * | 2011-10-09 | 2012-03-28 | 广东省生态环境与土壤研究所 | Metal heavy absorbent and preparation method and use thereof |
| CN103480347A (en) * | 2013-10-11 | 2014-01-01 | 天津汉晴环保科技有限公司 | Preparation method of composite flat membrane for adsorbing heavy metal ions and product thereof |
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Application publication date: 20170531 |