CN101274209A - Method for processing tail gas after incineration of organic fluorine high-boiling product - Google Patents
Method for processing tail gas after incineration of organic fluorine high-boiling product Download PDFInfo
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- CN101274209A CN101274209A CN 200710116302 CN200710116302A CN101274209A CN 101274209 A CN101274209 A CN 101274209A CN 200710116302 CN200710116302 CN 200710116302 CN 200710116302 A CN200710116302 A CN 200710116302A CN 101274209 A CN101274209 A CN 101274209A
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- incineration
- tail gas
- organic fluorine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
Abstract
The invention provides a disposal method for tail gas which is formed after organic fluorine high-boiling residues are burned, belonging to the field of organic fluorine chemical technique. The residual heat of burned tail gas is used for generating steam, thus changing waste into valuable. Meanwhile, the repeated spraying usage of water saves water resource and generates hydrofluoric acid with a certain consistency and high commercial values, the processing flow is simplified, the cost is reduced, and the manpower is saved. The flow of the disposal method of the invention has simple processing and safety and environmental protection, and is suitable for industrialized application.
Description
One, technical field
The present invention relates to a kind of processing method of tail gas after incineration of organic fluorine high-boiling product, belong to organic fluorine chemistry industrial technology field.
Two, technical background
In the Organic fluoride industrial production, for example in steam dilution cracking F22 system tetrafluoroethene and the tetrafluoroethene thermal cracking system hexafluoropropene process, can produce a large amount of fluorine high-boiling product raffinates that contain.It is big that these raffinates have toxicity, unmanageable characteristics.The general method of high temperature incineration that adopts is handled in the industry at present, but contains toxic gas HF in the tail gas, must handle it, realizes qualified discharge, avoids the pollution to environment.
At present, both at home and abroad the method that generally adopts be high-temperature tail gas through the water quick cooling cooling, absorb easy molten gases such as HF, unabsorbed tail gas enters caustic wash tower, water scrubber absorbs processing, again after mist water separator is isolated the liquid phase of carrying secretly, remaining CO
2Send into the high-altitude smoke stack emission Deng gas.The shortcoming of this method is that water absorbs the low concentration hydrofluoric acid that tail gas obtains, no commercial value, and directly discharging pollutes the environment again, must be through the lime neutralization, alum flocculation, precipitation process, bring follow-up a series ofly as troubles such as press filtration, filter residue processing, relative cost is higher.
Three, summary of the invention
At the defective of prior art, the invention provides a kind of technology advanced rationally, simplify technological process, reduce cost, save artificial, safety and environmental protection, be fit to the processing method of the tail gas after incineration of organic fluorine high-boiling product of industrial applications.
A kind of processing method of tail gas after incineration of organic fluorine high-boiling product, step is as follows:
1) the high temperature incineration tail gas of organic fluorine high-boiling product enters in the flue of waste heat boiler, carries out heat exchange, utilizes the heat energy of high-temperature tail gas to produce 0.8MPa steam; This steam can be used as heat energy and uses for producing.
2) incineration flue gas of the organic fluorine high-boiling product after the heat exchange enters the graphite absorption tower, and HF gas contained in the incineration flue gas is absorbed by water, generates hydrofluoric acid, and the water of hydrofluoric acid containing enters sour pond.
3) water in the sour pond enters the graphite absorption tower repeatedly by circulating pump, absorbs the incineration flue gas that contains HF gas, collects available hydrofluoric acid; Water in the pond is as the supplementing water in sour pond.
The above-mentioned incineration flue gas that is absorbed behind the HF gas by graphite absorption tower spray passes through water scrubber and caustic wash tower successively, harmful substance in the incineration flue gas and residue HF gas are respectively by water and alkaline solution absorption or neutralization, make the incineration flue gas that reaches discharge standard after mist water separator separates, through air-introduced machine, by smoke stack emission.
Described waste heat boiler comprises evaporimeter, flue and drum, the flue air inlet is connected with the tail gas after incineration of organic fluorine high-boiling product pipeline, evaporimeter removes imports and exports external seal in flue, the evaporimeter upper end is connected with drum by pipeline, with filler, steam (vapor) outlet, safety valve, thermometer and liquid level gauge installing port, divide into sewage draining exit on the drum.
The invention has the advantages that the waste heat production steam that utilizes incineration tail gas innovatively, turn waste into wealth.Water resource had both been saved in the use repeatedly of water simultaneously, had produced again to have the certain density hydrofluoric acid of higher commercial value, had simplified technological process, had reduced cost, had saved artificial.This flow process is simple, and safety and environmental protection is fit to industrial applications.
Description of drawings
Fig. 1 is the blowing-out gas waste heat boiler structural representation that the present invention uses.
Fig. 2 is a process chart of the present invention.
Wherein, 1, sewage draining exit (gas bag clean mouthful), 2, steam (vapor) outlet, 3, thermometer and liquid level gauge installing port, 4, filler, 5, safety valve, 6, safety valve, 7, drum, 8, flue, 9, evaporimeter, 10, waste heat boiler, 11, graphite absorption tower, 12, water scrubber, 13, caustic wash tower, 14, mist water separator, 15, air-introduced machine, 16, sour pond, 17, pond, 18, the alkali pond, 19, chimney.
The specific embodiment
The present invention will be further described below in conjunction with embodiment, but be not limited thereto.
Embodiment:
A kind of processing method of tail gas after incineration of organic fluorine high-boiling product, device therefor as depicted in figs. 1 and 2, concrete processing method is as follows:
1) the high temperature incineration tail gas of organic fluorine high-boiling product enters in the flue 8 of waste heat boiler, carries out heat exchange with water in the evaporimeter 9, utilizes the heat energy of high-temperature tail gas to produce 0.8MPa steam;
2) the incineration flue gas graphite absorption tower 11 of the organic fluorine high-boiling product after the heat exchange, HF gas contained in the incineration flue gas is absorbed by water, generates hydrofluoric acid, and the water of hydrofluoric acid containing enters sour pond 16;
3) water in the sour pond 16 enters graphite absorption tower 11 repeatedly by circulating pump, absorbs the incineration flue gas that contains HF gas, collects available hydrofluoric acid; Water in the pond 17 is as the supplementing water in sour pond 16.
The above-mentioned incineration flue gas that is absorbed behind the HF gas by graphite absorption tower 11 spray passes through water scrubber 12 and caustic wash tower 13 successively, harmful substance in the incineration flue gas and residue HF gas are respectively by water and alkaline solution absorption or neutralization, make the incineration flue gas that reaches discharge standard after mist water separator 14 separates, through air-introduced machine 15, by chimney 19 dischargings.
Described waste heat boiler comprises evaporimeter 9, flue 8 and drum 7, flue 8 air inlets are connected with the tail gas after incineration of organic fluorine high-boiling product pipeline, evaporimeter 9 removes imports and exports external seal in flue 8, evaporimeter 9 upper ends are connected with drum 7 by pipeline, with filler 4, steam (vapor) outlet 2, safety valve 5 and 6, thermometer and liquid level gauge installing port 3, divide into sewage draining exit 1 on the drum 7.
Claims (2)
1, a kind of processing method of tail gas after incineration of organic fluorine high-boiling product, step is as follows:
1) the high temperature incineration tail gas of organic fluorine high-boiling product enters in the flue of waste heat boiler, carries out heat exchange, utilizes the heat energy of high-temperature tail gas to produce 0.8MPa steam;
2) incineration flue gas of the organic fluorine high-boiling product after the heat exchange enters the graphite absorption tower, and HF gas contained in the incineration flue gas is absorbed by water, generates hydrofluoric acid, and the water of hydrofluoric acid containing enters sour pond;
3) water in the sour pond enters the graphite absorption tower repeatedly by circulating pump, absorbs the incineration flue gas that contains HF gas, collects available hydrofluoric acid; Water in the pond is as the supplementing water in sour pond.
2, the processing method of a kind of tail gas after incineration of organic fluorine high-boiling product as claimed in claim 1, it is characterized in that, described waste heat boiler comprises evaporimeter, flue and drum, the flue air inlet is connected with the tail gas after incineration of organic fluorine high-boiling product pipeline, evaporimeter removes imports and exports external seal in flue, the evaporimeter upper end is connected with drum by pipeline, with filler, steam (vapor) outlet, safety valve, liquid level gauge and thermometer, divides into sewage draining exit on the drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710116302 CN101274209A (en) | 2007-12-29 | 2007-12-29 | Method for processing tail gas after incineration of organic fluorine high-boiling product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710116302 CN101274209A (en) | 2007-12-29 | 2007-12-29 | Method for processing tail gas after incineration of organic fluorine high-boiling product |
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| Publication Number | Publication Date |
|---|---|
| CN101274209A true CN101274209A (en) | 2008-10-01 |
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| CN 200710116302 Pending CN101274209A (en) | 2007-12-29 | 2007-12-29 | Method for processing tail gas after incineration of organic fluorine high-boiling product |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705839A (en) * | 2012-05-16 | 2012-10-03 | 冯国宇 | Incineration disposal system of fluorine-containing waste liquid and waste gas and disposal method thereof |
| CN103357252A (en) * | 2013-07-31 | 2013-10-23 | 山东博丰利众化工有限公司 | Gypsum tail gas processing device |
| CN103695645A (en) * | 2012-08-21 | 2014-04-02 | 贺利氏贵金属有限责任两合公司 | Device and method for the thermal treatment of products containing fluorine and precious metals |
| CN112316713A (en) * | 2020-10-08 | 2021-02-05 | 中船重工（邯郸）派瑞特种气体有限公司 | System and method for stripping hydrogen from cathode tail gas in nitrogen trifluoride preparation process |
-
2007
- 2007-12-29 CN CN 200710116302 patent/CN101274209A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705839A (en) * | 2012-05-16 | 2012-10-03 | 冯国宇 | Incineration disposal system of fluorine-containing waste liquid and waste gas and disposal method thereof |
| CN103695645A (en) * | 2012-08-21 | 2014-04-02 | 贺利氏贵金属有限责任两合公司 | Device and method for the thermal treatment of products containing fluorine and precious metals |
| CN103357252A (en) * | 2013-07-31 | 2013-10-23 | 山东博丰利众化工有限公司 | Gypsum tail gas processing device |
| CN103357252B (en) * | 2013-07-31 | 2016-04-06 | 山东博丰利众化工有限公司 | Gypsum exhaust gas processing device |
| CN112316713A (en) * | 2020-10-08 | 2021-02-05 | 中船重工（邯郸）派瑞特种气体有限公司 | System and method for stripping hydrogen from cathode tail gas in nitrogen trifluoride preparation process |
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Open date: 20081001 |