CN211216168U - Boiler flue gas ammonia desulfurization oxidation air distribution system - Google Patents
Boiler flue gas ammonia desulfurization oxidation air distribution system Download PDFInfo
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- CN211216168U CN211216168U CN201921964522.8U CN201921964522U CN211216168U CN 211216168 U CN211216168 U CN 211216168U CN 201921964522 U CN201921964522 U CN 201921964522U CN 211216168 U CN211216168 U CN 211216168U
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Abstract
The utility model discloses a boiler flue gas ammonia desulfurization oxidation air distribution system, including oxidation roots's fan, oxidation tuber pipe and oxidation wind distributing pipe, oxidation roots's fan export is linked together with the entry of oxidation tuber pipe, the entrance of oxidation tuber pipe is equipped with oxidation tuber pipe valve; a nonmetal expansion joint is additionally arranged between the oxidation Roots blower and the oxidation air pipe valve; outlets of the oxidation air pipes are connected with four oxidation air pipe distribution pipes through flanges, and outlets of the four oxidation air pipe distribution pipes are positioned inside the desulfurizing tower; and the oxidizing air distributing pipe is also welded with an oxidizing air exhaust pipe. The utility model discloses a to current desulfurization oxidation section improve, make the abundant thorough oxidation of ammonium sulfite in the desulfurizing tower bottom of the tower thick liquid to reach the ammonium sulfate crystallization saturation, form solid content 6% ammonium sulfate thick liquid, thereby solved boiler flue gas ammonia process desulfurization ammonium sulfite oxidation thoroughly, crystalline grain thin centrifuge is from not going out, influences boiler desulfurization environmental protection discharge safety operation problem up to standard.
Description
Technical Field
The utility model relates to the technical field of chemical industry, in particular to a boiler flue gas ammonia desulphurization oxidation air distribution system.
Background
In the ultralow emission production process of boiler flue gas ammonia process desulfurization, the aqueous ammonia that adds in the oxidation tank is sent into the desulfurizing tower by the one-level circulating pump, absorb the sulfur dioxide ammonium sulfite in the flue gas, the ammonium sulfite solution flows back to the oxidation tank through the back flow that sets up at the absorption section, the abundant oxidation of oxidation air that is distributed evenly by the multilayer in oxidation tank lower part becomes ammonium sulfate solution, still have a small amount of ammonium sulfite oxidation and do not thoroughly get into the desulfurizing tower bottom, influence the crystallization of the thick liquid at the bottom of the desulfurizing tower, make the thin centrifuge of thick liquid crystal particle size can't leave, influence the environmental protection of desulfurizing tower and discharge up to.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the defect that current technology exists, provide boiler flue gas ammonia process desulfurization oxidation air distribution system, through improving current desulfurization oxidation section, make the abundant thorough oxidation of ammonium sulfite in the desulfurizing tower bottom slurry, in order to reach the ammonium sulfate crystallization saturation, form solid content 6% ammonium sulfate slurry, thereby solved boiler flue gas ammonia process desulfurization ammonium sulfite oxidation thoroughly, crystalline grain thin centrifuge can't leave, influence the boiler desulfurization environmental protection and discharge up to standard safe operation problem.
In order to achieve the above object, the utility model provides a following technical scheme:
an ammonia desulfurization and oxidation air distribution system for boiler flue gas comprises an oxidation Roots blower, an oxidation air pipe and an oxidation air distribution pipe, wherein the outlet of the oxidation Roots blower is communicated with the inlet of the oxidation air pipe, and the inlet of the oxidation air pipe is provided with an oxidation air pipe valve; a nonmetal expansion joint is additionally arranged between the oxidation Roots blower and the oxidation air pipe valve; outlets of the four oxidation air distribution pipes are positioned inside the desulfurizing tower and are distributed at equal intervals from top to bottom inside the desulfurizing tower; and the oxidizing air distributing pipe is also welded with an oxidizing air exhaust pipe.
The above boiler flue gas ammonia desulfurization oxidation air distribution system, preferred scheme is, oxidation wind distributing pipe is 2 meters bottom the desulfurization tower.
According to the above boiler flue gas ammonia desulfurization oxidation air distribution system, the preferable scheme is that double rows of holes are drilled at the bottom of the oxidation air distribution pipe, the diameter of each hole is 10mm, and the distance between the holes is 0.25 m.
The above boiler flue gas ammonia desulfurization oxidation air distribution system has the preferable scheme that the oxidation air exhaust and purification pipe is welded at a position 0.15m away from the outlet of the oxidation air distribution pipe.
The above boiler flue gas ammonia desulfurization oxidation air distribution system preferably has the oxidation air pipe being 304 pipes with a diameter of 159 mm by 5 mm.
The above boiler flue gas ammonia desulfurization oxidation air distribution system has the preferable scheme that the oxidation air distribution pipe is 2507 pipes with the diameter of 76 x 4 mm.
The above boiler flue gas ammonia desulfurization oxidation air distribution system preferably has the oxidation air exhaust pipe being 2507 pipe with diameter of 45 × 4 mm.
Above-mentioned boiler flue gas ammonia process desulfurization oxidation air distribution system, preferred scheme is, the length of oxidation wind exhaust pipe is 0.8 m.
The beneficial effects of the utility model are embodied in:
the utility model provides a boiler flue gas ammonia process desulfurization oxidation air distribution system improves through the desulfurization oxidation section that has now, and incomplete ammonium sulfite of oxidation in the thick liquid makes the desulfurization tower bottom, continues to become ammonium sulfate solution by the abundant oxidation of oxidation air, and it is thin to have solved ammonium sulfate crystallization crystalline grain in the prior art, and centrifuge is from going out, and the boiler desulfurization can not discharge up to standard environmental protection safe operation problem.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:
FIG. 1 is a structural diagram of an ammonia desulfurization and oxidation air distribution system for boiler flue gas of the utility model.
In the figure, a 1-oxidation Roots blower, a 2-nonmetal expansion joint, a 3-oxidation air pipe valve, a 4-oxidation air pipe, a 5-flange, a 6-oxidation air distribution pipe and a 7-oxidation air exhaust pipe are arranged.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
embodiment 1 referring to fig. 1, a boiler flue gas ammonia desulfurization and oxidation air distribution system comprises an oxidation roots blower 1, an oxidation air duct 4 and an oxidation air distribution duct 6, wherein an outlet of the oxidation roots blower 1 is communicated with an inlet of the oxidation air duct 4, and an inlet of the oxidation air duct 4 is provided with an oxidation air duct valve 3; a nonmetal expansion joint 2 is additionally arranged between the oxidation Roots blower 1 and the oxidation air pipe valve 3; the outlets of the oxidation air pipes 4 are connected with four oxidation air pipe air distribution pipes 6 through flanges, and the outlets of the four oxidation air pipe air distribution pipes 6 are positioned inside the desulfurization tower and are distributed at equal intervals from top to bottom inside the desulfurization tower; and the oxidation air distribution pipe 6 is also welded with an oxidation air exhaust pipe 7, wherein the oxidation air distribution pipe 6 is 2 meters away from the bottom of the desulfurization tower. The bottom of the oxidation air distribution pipe 6 is drilled with double rows of holes, the diameter of each hole is 10mm, and the distance between every two holes is 0.25 m; the oxidation air exhaust pipe 7 is welded at a position 0.15m away from the outlet of the oxidation air distributing pipe 6.
Specifically, the oxidation air duct 4 is 304 ducts with a diameter of 159 × 5mm, the oxidation air distribution duct 6 is 2507 ducts with a diameter of 76 × 4mm, the oxidation air exhaust duct 7 is 2507 ducts with a diameter of 45 × 4mm, and the length of the oxidation air exhaust duct 7 is 0.8 m.
After the boiler flue gas ammonia desulfurization tower operates, when crystal particles exist at the bottom of the desulfurization tower through sampling detection, an oxidation Roots blower 1 and an oxidation air pipe valve 3 are opened, the outlet pressure is controlled to be 0.03-0.04MPa, air is blown to an oxidation air distribution pipe 6 at the bottom of the desulfurization tower, oxidation air is distributed to four oxidation air distribution pipes 6 through oxidation air pipes 4, phi 10 double-row holes are drilled at the bottom of the tower to blow in slurry at the bottom of the tower, ammonium sulfite in the slurry at the bottom of the desulfurization tower is fully and thoroughly oxidized to reach the crystallization saturation of ammonium sulfate, ammonium sulfate slurry with the solid content of 6% is formed, and the problems that the oxidation of ammonium sulfite in the boiler flue gas ammonia desulfurization is incomplete, a crystal grain fine centrifuge cannot be separated out, and the environment-friendly standard emission safety.
One set of novel boiler flue gas ammonia process desulfurization oxidation air distribution system invests 50000 yuan, compares than the technology that does not use desulfurization oxidation air distribution system, has both solved ammonia process desulfurization ammonium sulfite oxidation thoroughly not the ejection of compact influence environmental protection discharge problems up to standard, can make the whole productions of the ammonium sulfate of byproduct create the benefit again, and every set of live time 3 years has created very big benefit for the enterprise.
It should be noted that the above-mentioned embodiments are only some of the preferred modes for implementing the invention, and not all of them. Obviously, all other embodiments obtained by a person skilled in the art without any inventive work based on the above-mentioned embodiments of the present invention shall fall within the scope of the protection of the present invention.
Claims (8)
1. A boiler flue gas ammonia desulfurization oxidation air distribution system comprises an oxidation Roots blower, an oxidation air pipe and an oxidation air distribution pipe, and is characterized in that an outlet of the oxidation Roots blower is communicated with an inlet of the oxidation air pipe, and an oxidation air pipe valve is arranged at the inlet of the oxidation air pipe; a nonmetal expansion joint is additionally arranged between the oxidation Roots blower and the oxidation air pipe valve; outlets of the four oxidation air distribution pipes are positioned inside the desulfurizing tower and are distributed at equal intervals from top to bottom inside the desulfurizing tower; and the oxidizing air distributing pipe is also welded with an oxidizing air exhaust pipe.
2. The boiler flue gas ammonia desulfurization oxidation air distribution system of claim 1, wherein the oxidation air distribution pipe is 2 meters away from the bottom of the desulfurization tower.
3. The boiler flue gas ammonia desulfurization oxidation air distribution system according to claim 1, wherein the bottom of the oxidation air distribution pipe is drilled with two rows of holes, the diameter of each hole is 10mm, and the distance between every two holes is 0.25 m.
4. The boiler flue gas ammonia desulfurization oxidation air distribution system according to claim 1, wherein the oxidation air exhaust pipe is welded at a position 0.15m away from the outlet of the oxidation air distribution pipe.
5. The boiler flue gas ammonia desulfurization oxidation air distribution system of claim 1, wherein the oxidation air pipe is 304 pipes with the diameter of 159 mm by 5 mm.
6. The boiler flue gas ammonia desulfurization oxidation air distribution system according to claim 1, wherein the oxidation air distribution pipe is 2507 pipe with diameter of 76 x 4 mm.
7. The boiler flue gas ammonia desulfurization oxidation air distribution system of claim 1, wherein the oxidation air exhaust pipe is 2507 pipe with a diameter of 45 x 4 mm.
8. The boiler flue gas ammonia desulfurization oxidation air distribution system of claim 7, wherein the length of the oxidation air exhaust pipe is 0.8 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964522.8U CN211216168U (en) | 2019-11-14 | 2019-11-14 | Boiler flue gas ammonia desulfurization oxidation air distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964522.8U CN211216168U (en) | 2019-11-14 | 2019-11-14 | Boiler flue gas ammonia desulfurization oxidation air distribution system |
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| CN211216168U true CN211216168U (en) | 2020-08-11 |
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| CN201921964522.8U Active CN211216168U (en) | 2019-11-14 | 2019-11-14 | Boiler flue gas ammonia desulfurization oxidation air distribution system |
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2019
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