CN102350210A - Pipeline injection flue gas desulphurization and preparation method thereof - Google Patents
Pipeline injection flue gas desulphurization and preparation method thereof Download PDFInfo
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- CN102350210A CN102350210A CN2011101702031A CN201110170203A CN102350210A CN 102350210 A CN102350210 A CN 102350210A CN 2011101702031 A CN2011101702031 A CN 2011101702031A CN 201110170203 A CN201110170203 A CN 201110170203A CN 102350210 A CN102350210 A CN 102350210A
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- flue gas
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- deduster
- pipeline injection
- boiler
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Abstract
The invention discloses a pipeline injection flue gas desulphurization and a preparation method thereof. The method comprises step of injecting a calcium base or sodium base absorbent between a boiler and a deduster; and common pipeline injection forms include: 1. dried slaked lime which needs to be humidified; 2. dry sodium base absorbent which does not need to be humidified; 3. spraying of lime white or washing in the pipe which does not require an individual humidification step. Effects of water spraying humidification are to increase absorbent activity and desulfurization rate and adjust dust characteristics, so as to guarantee a dust removal efficiency of the deduster.
Description
Technical field
The invention belongs to a kind of fume desulphurization method, be specifically related to a kind of duct injection flue gas desulfurization and preparation method thereof.
Background technology
China's energy is main with coal; Fire coal is the main source of sulfur dioxide in the atmosphere; And sulfur dioxide is one of main atmosphere pollution of face of mankind nowadays; Its existence is to natural ecological environment; Human health; Industrial and agricultural production; Aspect such as building and material all causes harm to a certain degree; Along with understanding in depth and studying to the sulfur dioxide pollution origin cause of formation and harm; The people of various countries and government have recognized that the seriousness of atmosphere pollution and the urgency of control atmosphere pollution; Launch respectively various flue gas desulfurization techniques, yet traditional flue gas desulfurization technique exists the complex operation complicacy; Process is difficult to control; Desulphurization cost is high; Byproduct is difficult to problems such as recycling.
Summary of the invention
The present invention is directed to above-mentioned situation, a kind of duct injection flue gas desulfurization and preparation method thereof is provided.
The present invention realizes through following technical scheme: between boiler and deduster connecting pipe, spray into calcium base or sodium base absorbant, prevailing duct injection form has 1, dried calcium hydroxide, needs humidification; 2, dried sodium base absorbant does not need humidification; 3, washing in spray lime white or the pipe does not need independent humidification step.The effect of work of water sprinkling for better material moisture mainly is in order to strengthen the activity of absorbent, to improve desulfurization degree and the characteristic of regulating dust, to guarantee the dust removal efficiency of deduster.Sprayed into the calcium-based chemical reaction process is the reaction of calcium oxide and sulfur dioxide; injected sodium complicated reaction process, thermal decomposition of sodium bicarbonate, sulfur dioxide reacts with the sodium carbonate surface and sodium sulfite, because of the hole clogging hindered diffusion of sulfur dioxide, the reaction rate slows down, in order to continue to carry out the reaction, the absorbent particles must be further decomposed to release carbon dioxide to form a network throughout the voids within the particles, this process allows fresh absorbent having activity exposed, SO2 may spread to the interior of the particle, the absorbent surface area 5-20 times larger than the original, to better improve the desulfurization efficiency.
The present invention compares with traditional sulfur method has following beneficial effect: the investment and expense is low, technology is simple, be applicable to the situation that is difficult to reconstruct, duct injection has very big potentiality to old arcola.
Fig. 1 is a process chart of the present invention
The specific embodiment
1, between boiler and deduster, spray into the calcium hydroxide of humidification, calcium hydroxide and sulfur in smoke generation chemical reaction play the effect of solid sulphur desulfurization;
2, between boiler and deduster, spray into dried sodium base absorbant, the product after the sodium base decomposes can react with sulfur in smoke, plays the effect of desulfurization;
3, between boiler and deduster, spray into washing in lime white or the pipe, lime stone and sulfur in smoke generation chemical reaction play the effect of solid sulphur desulfurization.
Claims (3)
1. duct injection flue gas desulfurization and preparation method thereof is characterized in that: between boiler and deduster connecting pipe, spray into desulfurizing agent, its composition is the calcium hydroxide of humidification;
2. according to said duct injection flue gas desulfurization of claim 1 and preparation method thereof, it is characterized in that: between boiler and deduster connecting pipe, spray into desulfurizing agent, its composition is dried sodium base absorbant;
3. according to said duct injection flue gas desulfurization of claim 1 and preparation method thereof, it is characterized in that: between boiler and deduster connecting pipe, spray into desulfurizing agent, its composition is a lime white.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101702031A CN102350210A (en) | 2011-06-08 | 2011-06-08 | Pipeline injection flue gas desulphurization and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101702031A CN102350210A (en) | 2011-06-08 | 2011-06-08 | Pipeline injection flue gas desulphurization and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102350210A true CN102350210A (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101702031A Pending CN102350210A (en) | 2011-06-08 | 2011-06-08 | Pipeline injection flue gas desulphurization and preparation method thereof |
Country Status (1)
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| CN (1) | CN102350210A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162548A (en) * | 2013-03-25 | 2013-06-19 | 天津市明生环保工程设备有限公司 | Calcium-spraying humidification activation flue gas purification system of double-chamber melting furnace for secondary aluminum |
| CN109847571A (en) * | 2019-04-02 | 2019-06-07 | 江苏优拿大环保科技有限公司 | A kind of new semi-dry desulfurizing process |
-
2011
- 2011-06-08 CN CN2011101702031A patent/CN102350210A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162548A (en) * | 2013-03-25 | 2013-06-19 | 天津市明生环保工程设备有限公司 | Calcium-spraying humidification activation flue gas purification system of double-chamber melting furnace for secondary aluminum |
| CN109847571A (en) * | 2019-04-02 | 2019-06-07 | 江苏优拿大环保科技有限公司 | A kind of new semi-dry desulfurizing process |
| CN109847571B (en) * | 2019-04-02 | 2022-03-04 | 江苏优拿大环保科技有限公司 | Novel semi-dry desulfurization process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120215 |