CN107261761A - A kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent - Google Patents
A kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent Download PDFInfo
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- CN107261761A CN107261761A CN201710580579.7A CN201710580579A CN107261761A CN 107261761 A CN107261761 A CN 107261761A CN 201710580579 A CN201710580579 A CN 201710580579A CN 107261761 A CN107261761 A CN 107261761A
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- Prior art keywords
- lime stone
- slag
- carbide slag
- carbide
- slurry
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- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to chemical technology field, a kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent is disclosed, is comprised the following steps：Carbide slag is added water and is put into the melt pit of absorption tower after stirring and dissolving；When carbide slag slurry depth reaches 1.4m 1.6m in melt pit, start sump pump and squeeze into carbide slag slurry in absorption tower；When carbide slag slurry depth is down to 0.5m 0.7m in melt pit, stop melt pit pump operation；Lime stone slurry is supplied using continuous, interruption fills into carbide slag slurry.The present invention substitutes lime stone using industrial waste carbide slag and used as desulfurizing agent, Limestone mining amount can be reduced every year up to 19260.8 tons, and solve the problem of chemical industry calcium carbide Slag treatment well, while reach waste resource recovery comprehensively utilize, turn bane into boon, turning waste into wealth, the effect of emission reduction synergy.
Description
Technical field
Efficiently taken off the invention belongs to chemical technology field, more particularly to a kind of preparation of industrialization lime stone doping calcium carbide ground-slag
The method of sulphur agent.
Background technology
The gypsum of lime stone one.It is to absorb the SO in flue gas in scrubbing tower using the slurries of lime or lime stone2And
A kind of method of by-product gypsum.Its technological principle is the SO that flue gas is absorbed with lime or lime stone slurry2, it is divided into absorption and aoxidizes
Two stages.First absorb generation calcium sulfite, then by calcium sulfite oxidation into calcium sulfate be gypsum.The common technique of this method
Flow is that flue gas initially enters cooling tower, 90% or so flue dust is washed with water, cools, is humidified and removed in cooling tower, so
Enter afterwards in absorption tower, washing desulphurization is carried out with lime slurry in tower.Through desulfurization and the flue gas of mist purification is removed, it is then heated
Device is heated up, and air is discharged into by chimney.Absorb SO2Slurries afterwards, are aoxidized in oxidizing tower with compressed air.Slurry after oxidation
Liquid produces product gypsum through thickening, dehydration.This method is the main method of external industrialization flue gas desulfurization, especially with day this application compared with
It is many, it is used for thermal power plant.Because absorbent and reaction product viscosity are big, therefore the easy fouling of the equipment such as absorption tower and blocking；If
Standby component wear problem is also than more serious；If the sludge comprehensive utilization degree that technical process is produced is not high, exists and cause secondary
The possibility of pollution.
In summary, the problem of prior art is present be：Because absorbent and reaction product viscosity are big, therefore absorption tower etc. is set
Standby easy fouling and blocking；Part of appliance wear problem is also than more serious；If the sludge comprehensive utilization degree that technical process is produced is not
Gao Shi, there is a possibility that to cause secondary pollution.
The content of the invention
The problem of existing for prior art, the invention provides a kind of preparation of industrialization lime stone doping calcium carbide ground-slag is high
The method for imitating desulfurizing agent.
The present invention is achieved in that a kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent,
The method of the preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent, including：
Carbide slag is added water and is put into the melt pit of absorption tower after stirring and dissolving；
When carbide slag slurry depth reaches 1.4m-1.6m in melt pit, start sump pump and carbide slag slurry is squeezed into absorption
In tower；When carbide slag slurry depth is down to 0.5m-0.7m in melt pit, stop melt pit pump operation；
Lime stone slurry is supplied using continuous, interruption fills into carbide slag slurry.
Further, carbide slag enters absorption tower melt pit, then pass through after the dissolving of small-size concrete agitator by filter screen
Sump pump is squeezed into absorption tower.
Further, the carbide slag slurry density be 0.997 kilogram every cubic metre~1.534 kilograms every cubic metre, pH value
For 11.87~13.45.
Further, the absorption tower melt pit cross-sectional area is 3.0m × 3.0m.
Further, the speed of carbide slag dissolving is 1t/h, supplies lime stone slurry using continuous, interruption fills into carbide slag slurry
Method carry out；The doping ratio of the lime stone and carbide slag is 1: 1~2.
Another object of the present invention is to provide one kind to state preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent
System.
Advantages of the present invention and good effect are：
Save the one-time investment that power plant subsequently builds desulfurizer lime powder made of stones and pulping system, preresearch estimates flue gas
De- thin device can save more than 3,000,000 yuan, it is possible to decrease construction costs 8% or so.The desulphurization system life-span in terms of 30 years, about saves 10
Ten thousand yuan/year.
Absorbent prepares cost and declined to a great extent.Annual 1.1 ten thousand tons of amount of purchase for reducing lime stone, can by 60 yuan/ton of prices
660,000 yuan of saving expense.Pulverized coal preparation system is cancelled, and reduces the k Wh of electric quantity consumption 1,100,000, by 0.3 yuan/k Wh electricity price, can save every year
About 330,000 yuan of the electricity charge.Calculated by concentration of slurry 30%, about reduce the m3/ of water consume 100,000, based on 1 yuan/m3 water rates, can save within 1 year
100,000 yuan of water rate.In summary 3, annual cost-saved 1,090,000 yuan of powder and pulping system processed declines average annual operating cost
14.6%.
In absorbent internal circulating load under the same conditions, carbide slag slurries desulfurization is than limestone slurry desulfurization, efficiency improve 2% with
On.
Brief description of the drawings
Fig. 1 is the method stream of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent provided in an embodiment of the present invention
Cheng Tu.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
At present, it is impossible to which it is fume desulfurizing agent to utilize replacing carbide slag with lime masonry, the base of higher desulfuration efficiency is being ensured
On plinth；A large amount of exploitations of lime stone can not both be reduced, reduce pollution to environment, the treatment of wastes with processes of wastes against one another can be reached again, is turned waste into wealth
Dual purpose.
The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.
S101：Carbide slag is added water and is put into the melt pit of absorption tower after stirring and dissolving；Carbide slag is transported to after power plant, is stored in stone
Lime stone rickyard, is transported near the melt pit of absorption tower when using with loading machine, and manually by carbide slag shovel to mixer, add water stirring
It is put into after dissolving in the melt pit of absorption tower.
S102：When carbide slag slurry depth reaches 1.4m-1.6m in melt pit, start sump pump and squeeze into carbide slag slurry
In absorption tower；When carbide slag slurry depth is down to 0.5m-0.7m in melt pit, stop melt pit pump operation；
S103：Lime stone slurry is supplied using continuous, interruption fills into carbide slag slurry.
In the above method that provides of the present invention, it is preferable that the experiment can door genco desulphurization system carry out, electricity
Rock ballast enters absorption tower melt pit after the dissolving of small-size concrete agitator, by filter screen, then squeezes into absorption tower by sump pump
It is interior.
In the above method that the present invention is provided, it is preferable that the carbide slag slurry density is 0.997 kilogram every cubic metre
~1.534 kilograms every cubic metre, pH value is 11.87~13.45.
In the above method that provides of the present invention, it is preferable that the absorption tower pit area be 3.0m × 3.0m, melt pit is every
Rice volume of the liquid level equivalent to 9 cubic metres.
In the above method that provides of the present invention, it is preferable that it is described when in melt pit carbide slag slurry depth reach that 1.5m is left
When right, start sump pump and squeeze into carbide slag slurry in absorption tower.
In the above method that the present invention is provided, it is preferable that described when carbide slag slurry depth is down to 0.6m in melt pit,
Stop melt pit pump operation.
In the above method that provides of the present invention, it is preferable that described to be restricted by mixer capacity is too small,
The speed of carbide slag dissolving is slower, about 1t/h, and experiment can only supply lime stone slurry using continuous, and interruption fills into electricity
The method of rock ballast slurries is carried out.
In the above method that the present invention is provided, it is preferable that the doping ratio of the lime stone and carbide slag is 1: 1~2.
The application principle of the present invention is further described with reference to specific embodiment.
Embodiment 1：
Present embodiments provide it is a kind of prepare lime stone adulterate calcium carbide ground-slag efficient desulfurizing agent method, this method include with
Lower step：
(1) processing of calcium carbide ground-slag
Carbide slag is transported to after power plant, is stored in lime stone rickyard, is transported to when using with loading machine near the melt pit of absorption tower,
It is artificial to shovel carbide slag into mixer, it is put into after the stirring and dissolving that adds water in the melt pit of absorption tower.
(2) calcium carbide ground-slag is squeezed into absorption tower
When carbide slag slurry depth reaches 1.5m or so in melt pit, start sump pump and carbide slag slurry is squeezed into absorption tower
It is interior；When carbide slag slurry depth is down to 0.6m in melt pit, stop melt pit pump operation.Carbide slag slurry density is 1.053 kilograms
Every cubic metre, pH value is 12.51.
(3) lime stone slurry is continuously supplied
Continuous to supply lime stone slurry, interruption fills into carbide slag slurry, and the ratio for making lime stone and carbide slag is 1: 1.
Embodiment 2：
(1) processing of calcium carbide ground-slag
Carbide slag is transported to after power plant, is stored in lime stone rickyard, is transported to when using with loading machine near the melt pit of absorption tower,
It is artificial to shovel carbide slag into mixer, it is put into after the stirring and dissolving that adds water in the melt pit of absorption tower.
(2) calcium carbide ground-slag is squeezed into absorption tower
When carbide slag slurry depth reaches 1.5m or so in melt pit, start sump pump and carbide slag slurry is squeezed into absorption tower
It is interior；When carbide slag slurry depth is down to 0.6m in melt pit, stop melt pit pump operation.Carbide slag slurry density is 1.534 kilograms
Every cubic metre, pH value is 11.87.
(3) lime stone slurry is continuously supplied
Continuous to supply lime stone slurry, interruption fills into carbide slag slurry, and the ratio for making lime stone and carbide slag is 1: 2.
Embodiment 3：
(1) processing of calcium carbide ground-slag
Carbide slag is transported to after power plant, is stored in lime stone rickyard, is transported to when using with loading machine near the melt pit of absorption tower,
It is artificial to shovel carbide slag into mixer, it is put into after the stirring and dissolving that adds water in the melt pit of absorption tower.
(2) calcium carbide ground-slag is squeezed into absorption tower
When carbide slag slurry depth reaches 1.5m or so in melt pit, start sump pump and carbide slag slurry is squeezed into absorption tower
It is interior；When carbide slag slurry depth is down to 0.6m in melt pit, stop melt pit pump operation.Carbide slag slurry density is 0.997 kilogram
Every cubic metre, pH value is 13.45.
(3) lime stone slurry is continuously supplied
Continuous to supply lime stone slurry, interruption fills into carbide slag slurry, and the ratio for making lime stone and carbide slag is 1: 1.5.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
- A kind of method of calcium carbide ground-slag efficient desulfurizing agent 1. preparation of industrialization lime stone adulterates, it is characterised in that the industrialization The method for preparing lime stone doping calcium carbide ground-slag efficient desulfurizing agent, including：Carbide slag is added water and is put into the melt pit of absorption tower after stirring and dissolving；When carbide slag slurry depth reaches 1.4m-1.6m in melt pit, start sump pump and squeeze into carbide slag slurry in absorption tower； When carbide slag slurry depth is down to 0.5m-0.7m in melt pit, stop melt pit pump operation；Lime stone slurry is supplied using continuous, interruption fills into carbide slag slurry.
- The method of calcium carbide ground-slag efficient desulfurizing agent 2. preparation of industrialization lime stone as claimed in claim 1 adulterates, its feature exists In carbide slag enters absorption tower melt pit after the dissolving of small-size concrete agitator, by filter screen, then squeezes into suction by sump pump Receive in tower.
- The method of calcium carbide ground-slag efficient desulfurizing agent 3. preparation of industrialization lime stone as claimed in claim 1 adulterates, its feature exists It is 0.997 kilogram every cubic metre~1.534 kilograms every cubic metre in, the carbide slag slurry density, pH value is 11.87~ 13.45。
- The method of calcium carbide ground-slag efficient desulfurizing agent 4. preparation of industrialization lime stone as claimed in claim 1 adulterates, its feature exists In the absorption tower melt pit cross-sectional area is 3.0m × 3.0m.
- The method of calcium carbide ground-slag efficient desulfurizing agent 5. preparation of industrialization lime stone as claimed in claim 1 adulterates, its feature exists In the speed of carbide slag dissolving is 1t/h, supplies lime stone slurry using continuous, interruption fills into the method for carbide slag slurry to enter OK；The doping ratio of the lime stone and carbide slag is 1: 1~2.
- 6. a kind of industrialization of the method for preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent as claimed in claim 1 The system for preparing lime stone doping calcium carbide ground-slag efficient desulfurizing agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580579.7A CN107261761A (en) | 2017-07-18 | 2017-07-18 | A kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent |
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| CN201710580579.7A CN107261761A (en) | 2017-07-18 | 2017-07-18 | A kind of method of preparation of industrialization lime stone doping calcium carbide ground-slag efficient desulfurizing agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813045A (en) * | 2019-11-26 | 2020-02-21 | 国家能源泰安热电有限公司 | Water treatment sludge recovery method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201366313Y (en) * | 2008-11-21 | 2009-12-23 | 四川恒泰环境技术有限责任公司 | Device for desulphurizing flue gas with carbide slags |
| CN102188896A (en) * | 2010-09-28 | 2011-09-21 | 浙江浙大海元环境科技有限公司 | Process for preparing complex desulfurizer from carbide slag for desulfuration |
| CN106178858A (en) * | 2016-07-28 | 2016-12-07 | 湖南湘牛环保实业有限公司 | A kind of device and method of the sulfur dioxide utilized in carbide slag removing flue gas |
-
2017
- 2017-07-18 CN CN201710580579.7A patent/CN107261761A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201366313Y (en) * | 2008-11-21 | 2009-12-23 | 四川恒泰环境技术有限责任公司 | Device for desulphurizing flue gas with carbide slags |
| CN102188896A (en) * | 2010-09-28 | 2011-09-21 | 浙江浙大海元环境科技有限公司 | Process for preparing complex desulfurizer from carbide slag for desulfuration |
| CN106178858A (en) * | 2016-07-28 | 2016-12-07 | 湖南湘牛环保实业有限公司 | A kind of device and method of the sulfur dioxide utilized in carbide slag removing flue gas |
Non-Patent Citations (1)
| Title |
|---|
| 张建华: "电石渣部分替代石灰石脱硫的经济学分析", 《华电技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813045A (en) * | 2019-11-26 | 2020-02-21 | 国家能源泰安热电有限公司 | Water treatment sludge recovery method |
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Application publication date: 20171020 |