CN107998818B - Inert gas protection system and method for activated carbon adsorption tower - Google Patents
Inert gas protection system and method for activated carbon adsorption tower Download PDFInfo
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- 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
- B01D53/04—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 with stationary adsorbents
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Abstract
The inert gas protection system of the activated carbon adsorption tower comprises an adsorption tower, a flue gas inlet is formed in the lower portion of one side of the adsorption tower according to the flow direction of flue gas, and a flue gas outlet is formed in the upper portion of the other side of the adsorption tower, and is characterized in that: the flue gas inlet of the adsorption tower is internally provided with a double-baffle door, the flue gas outlet of the adsorption tower is internally provided with a single-baffle door, the tower bottom of the adsorption tower is connected with a first pipeline so as to supply inert gas, the tail end of the first pipeline is provided with a first valve, the front end of the second pipeline is connected with the first pipeline, the rear end of the second pipeline is communicated with the space between the front baffle door and the rear baffle door of the double-baffle door, the second pipeline is provided with a second valve, the front end of the third pipeline is connected with the first pipeline, the connecting point is positioned between the second pipeline and the first valve, the rear end of the third pipeline is communicated with the downstream space of the double-baffle door of the flue gas inlet, the third pipeline is provided with a third valve, the fourth pipeline is communicated with the third pipeline at the downstream position of the third valve, and the fourth pipeline is provided with a fourth valve.
Description
Technical Field
The present invention relates to an inert gas protection system of an activated carbon adsorption tower in a flue gas purification system of an iron ore sintering machine, and more particularly, to a system for realizing inert gas protection in a flue gas purification system (i.e., a flue gas adsorption and analysis system) including an activated carbon adsorption tower and an activated carbon desorption tower, and an inert gas protection method of an activated carbon adsorption tower.
Background
The technology for treating flue gas by the activated carbon method has been studied and applied for over fifty years, and early technical researches and applications are mainly concentrated in Germany, japan, america and other countries. The BF company in germany began to develop the Reinluft desulfurization technology in 1957 (current DMT company), and the activated carbon desulfurization was studied in japan in the middle of 60 s, and the ruqin company in germany also conducted earlier studies on the water-washing regeneration activated carbon flue gas desulfurization process. With the development and maturity of the flue gas desulfurization technology of the activated carbon method in foreign countries, some representative methods such as BF method, reinluft method and Lurgi method of Germany are generated; japanese legislation, summit law; westraco method in the united states.
For industrial flue gas, especially sintering machine flue gas in the steel industry, it is desirable to employ desulfurization and denitrification apparatuses and processes including activated carbon adsorption towers and analytical towers. In a desulfurization and denitrification apparatus including an activated carbon adsorption tower for adsorbing pollutants including sulfur oxides, nitrogen oxides and dioxins from sintering flue gas or exhaust gas (particularly sintering flue gas of a sintering machine in the iron and steel industry) and a desorption tower for thermal regeneration of activated carbon.
The active carbon desulfurization has the advantages of high desulfurization rate, capability of simultaneously realizing denitration, dioxin removal, dust removal, no waste water and waste residue generation and the like, and is a flue gas purification method with great prospect. The activated carbon can be regenerated at high temperature, and sulfur oxides, nitrogen oxides, dioxin and other pollutants adsorbed on the activated carbon are rapidly resolved or decomposed (sulfur dioxide is resolved, and nitrogen oxides and dioxin are decomposed) at the temperature higher than 350 ℃. And as the temperature increases, the regeneration rate of the activated carbon further increases and the regeneration time shortens, preferably the regeneration temperature of the activated carbon in the desorption column is generally controlled to be about 430 c, so that the desired desorption temperature (or regeneration temperature) is, for example, in the range of 390-450 c, more preferably in the range of 400-440 c.
In the traditional active carbon desulfurization process, flue gas is introduced into an adsorption tower by a booster fan, and mixed gas of ammonia and air is sprayed into a tower inlet so as to improve NO (nitrogen oxide) X The purified flue gas enters a sintering main chimney for emission. Activated carbon is added into the adsorption tower from the top of the tower and moves downwards under the action of gravity and a discharging device at the bottom of the tower. Activated carbon coming out of the analysis tower is conveyed to an adsorption tower by an activated carbon conveyor, the activated carbon saturated by the adsorption tower is discharged from the bottom, and the discharged activated carbon is conveyed to the analysis tower by the activated carbon conveyor for activated carbon regeneration.
The activated carbon flue gas purification technology has the characteristics of being capable of simultaneously desulfurizing and denitrating, realizing recycling of byproducts, recycling of adsorbents, high desulfurizing and denitrating efficiency and the like, and is a desulfurizing and denitrating integrated technology with development prospect. In a desulfurization and denitrification apparatus including an activated carbon adsorption tower for adsorbing pollutants including sulfur oxides, nitrogen oxides and dioxins from sintering flue gas or exhaust gas (particularly sintering flue gas of a sintering machine in the iron and steel industry) and a desorption tower for thermal regeneration of activated carbon.
The active carbon method fume purifying technology has the functions of desulfurizing and denitrating simultaneously, and the process includes main equipment comprising adsorption tower, regeneration tower and active carbon conveyer.
The function of the analytic tower is to adsorb SO from the activated carbon 2 Releasing, decomposing dioxin by over 80% at 400 deg.C and a certain residence time, cooling, sieving and reusing the activated carbon. Released SO 2 Can prepare sulfuric acid, etc., and the resolved active carbon is sent to an adsorption tower through a conveying device to be reused for adsorbing SO 2 And NO X Etc.
NO in adsorption column and desorption column X React with ammonia to remove NO by SCR, SNCR, etc X . The dust is adsorbed by the active carbon when passing through the adsorption tower, the vibrating screen at the bottom end of the analysis tower is separated, and the active carbon powder below the screen is sent to an ash bin and then can be sent to a blast furnace or sintered for use as fuel.
The steel industry makes an important contribution to the development of industrialization and town of China, but at the same time, the steel industry of China has low environmental protection level and higher pollutant discharge amount per unit yield, and the improvement of the overall competitiveness of the steel industry is severely restricted. In order to control pollutant emission, the national environmental protection department sets the emission standard of atmospheric pollutants for the iron and steel sintering and pellet industry, which indicates that the following atmospheric pollutant emission limits are implemented by the existing iron and steel enterprises for sintering and pellet 1 month and 1 day from 2015: SO (SO) 2 200mg/m 3 、NOx 300mg/m 3 Dioxins 0.5ng-TEG/m 3 . It can be seen that the treatment of the atmospheric pollution in the steel industry is improved from the original dust removal and desulfurization to SO 2 -NOx-dioxin and other multi-pollutants. At present, domestic desulfurization technology tends to be mature, and denitration and dioxin removal are still in a starting stage. Active coke technology has been adopted by Shanghai Ke sulfur company in coal-fired boiler and nonferrous smelting industry, and its structural form and principle are consistent with Sumitomo.
The activated carbon (coke) sintering flue gas purification technology is a dry flue gas treatment technology capable of recycling, and has the functions of saving water, desulfurizing, denitrating, removing dioxin, removing heavy metals, removing dust and removing other trace harmful flue gas components (such as HCl, HF, SO) 3 Etc.), as well asCan recycle domestic short-cut sulfur resource (high concentration SO) 2 Concentrated sulfuric acid, etc. can be prepared).
However, activated carbon is a combustible substance, and in the flue gas purification process, because the activated carbon is not smoothly discharged, the accumulated materials in the tower can not be released in time, or because the flue gas temperature at the inlet of the adsorption tower is improperly controlled, the activated carbon in the adsorption tower can be possibly caused to have high temperature, and even burn.
After the adsorption tower is at high temperature, nitrogen is directly introduced into the tower by the traditional inert gas protection method, the flowing state of the inert gas in the tower and high-temperature preventive measures are not considered, and the protection effect is not particularly obvious.
In order to ensure the operation safety of the system, the application provides an inert gas protection system and an inert gas protection method.
Disclosure of Invention
The invention aims to provide an inert gas protection system of an activated carbon adsorption tower.
According to the invention, an inert gas protection system of an activated carbon adsorption tower is provided, which comprises an adsorption tower, wherein a flue gas inlet is formed in the lower part of one side of the adsorption tower according to the flow direction of flue gas, and a flue gas outlet is formed in the upper part of the other side of the adsorption tower. Wherein a double baffle door is arranged in the flue gas inlet of the adsorption tower. A single baffle door is arranged in the flue gas outlet of the adsorption tower. The bottom of the adsorption tower is connected with a first pipeline. The end section of the first pipeline is provided with a first valve. The front end of the second pipeline is connected with the first pipeline, and the rear end of the second pipeline is communicated with a space between the front baffle door and the rear baffle door of the double baffle door. The second pipeline is provided with a second valve. The front end of the third conduit is connected to the first conduit and the connection point is located between the second conduit and the first valve. And the rear end of the third pipeline is communicated with the downstream space of the double baffle door of the flue gas inlet. And a third valve is arranged on the third pipeline. The fourth conduit communicates with the third conduit at a location downstream of the third valve. And a fourth valve is arranged on the fourth pipeline.
Preferably, the system further comprises a temperature monitor for monitoring the temperature in the adsorption tower.
Preferably, the upstream end of the first conduit is connected to an inert gas supply conduit or an inert gas supply source. Preferably, the inert gas is one of nitrogen, helium or argon, more preferably nitrogen.
Preferably, the upstream end of the fourth conduit is connected to an ammonia gas supply conduit or an ammonia gas supply source.
Preferably, a temperature detection probe of the temperature detector penetrates through the side wall of the adsorption tower and stretches into the space of the adsorption tower; preferably, the temperature detecting probe is an infrared detecting type temperature detector or a thermocouple type temperature detector.
According to the present invention, there is also provided an inert gas protection method of an activated carbon adsorption tower, the method comprising the steps of:
1) The adsorption tower system normally operates, and the temperature monitor monitors the temperature in the adsorption tower in real time;
2) The double-baffle door and the single-baffle door are both opened, and the flue gas enters the adsorption tower from the flue gas inlet and is discharged from the flue gas outlet;
3) The fourth valve is opened, ammonia gas is introduced into the adsorption tower through the fourth pipeline, and meanwhile, the first valve, the second valve and the third valve are closed, and the temperature monitor displays that the temperature in the adsorption tower is less than 150 ℃;
4) When the temperature in the tower is less than 150 ℃, the adsorption tower system normally operates, but when the temperature in the tower is more than or equal to 150 ℃, the double-baffle door, the single-baffle door and the valves are correspondingly operated according to the specific temperature displayed by the temperature monitor.
Preferably, when the temperature monitor shows that the temperature in the adsorption tower is more than or equal to 150 ℃ and less than 160 ℃, the operation of the step 4) is specifically as follows: the first valve is opened, and inert gas is introduced into the bottom of the tower through the first pipeline.
Preferably, when the temperature monitor shows that the temperature in the adsorption tower is not less than 160 ℃, the operation of the step 4) is specifically as follows:
the double-baffle door and the single-baffle door are closed to block the flue gas, the fourth valve is closed to stop introducing ammonia gas into the tower, the second valve is opened to introduce inert gas into the space between the front baffle door and the rear baffle door of the double-baffle door through the second pipeline to block oxygen, and the third valve is opened to introduce inert gas into the adsorption tower through the third pipeline; preferably, the second valve and the third valve are opened simultaneously with the opening of the first valve, and inert gas is introduced into the bottom of the column via the first pipe.
Preferably, the inert gas is one of nitrogen, helium or argon, preferably nitrogen.
In this application, the column height of the adsorption column is, for example, 8 to 50m, preferably 10 to 48m, preferably 13 to 45m, preferably 15 to 40m, more preferably 18 to 35m, in general. The column height of the adsorption column refers to the height from the activated carbon outlet at the bottom of the adsorption column to the activated carbon inlet at the top of the adsorption column, i.e., the height of the main structure of the column.
In the present invention, there is no particular requirement for the resolution column, and the resolution column of the prior art can be used in the present invention. Preferably, the column is a shell-and-tube type vertical column in which the activated carbon is fed from the top of the column, flows down through a tube pass, then reaches the bottom of the column, and the heated gas flows through the shell pass, and the heated gas enters from one side of the column, exchanges heat with the activated carbon flowing through the tube pass to cool, and then is fed out from the other side of the column. In the present invention, there is no particular requirement for the resolution column, and the resolution column of the prior art can be used in the present invention. Preferably, the column is a shell-and-tube (or shell-and-tube) vertical column in which the activated carbon is fed from the top of the column, flows down through the tube side of the upper heating zone, then reaches a buffer space between the upper heating zone and the lower cooling zone, then flows through the tube side of the lower cooling zone, then reaches the bottom of the column, and the heated gas (or hot air) flows through the shell side of the heating zone, and the heated gas (400-450 ℃) enters from one side of the heating zone of the column, is cooled by indirect heat exchange with the activated carbon flowing through the tube side of the heating zone, and then is discharged from the other side of the heating zone of the column. The cooling air enters from one side of the cooling zone of the desorption tower and carries out indirect heat exchange with the desorbed and regenerated active carbon flowing through the tube side of the cooling zone. After indirect heat exchange, the cooling air is warmed to 90-130 ℃ (e.g., about 100 ℃).
Generally, the resolution column used in the present invention generally has a column height of 10 to 45m, preferably 15 to 40m, more preferably 20 to 35m. The desorber generally has a bulk cross-sectional area of from 6 to 100 square meters, preferably from 8 to 50 square meters, more preferably from 10 to 30 square meters, still more preferably from 15 to 20 square meters.
"resolving" and "regenerating" are used interchangeably in this application.
The invention has the advantages that:
the system of the invention can lead the inert gas to flow regularly in the tower, thereby achieving the best cooling or fire extinguishing effect.
Drawings
FIG. 1 is a schematic diagram of an inert gas protection system of an activated carbon adsorption column of the present invention.
Reference numerals:
reference numerals: 1: an adsorption tower; 2: a flue gas inlet; 3: a flue gas outlet; 4: a double baffle door; 5: a single baffle door; 6: a first valve; 7: a second valve; 8: a third valve; 9: a fourth valve; 10: a temperature monitor; l1: a first pipe; l2: a second pipe; l3: a third conduit; l4: and a fourth pipeline.
Detailed Description
The invention aims to provide an inert gas protection system of an activated carbon adsorption tower.
According to the invention, an inert gas protection system of an activated carbon adsorption tower is provided, which comprises an adsorption tower 1, wherein a flue gas inlet 2 is arranged at the lower part of one side of the adsorption tower 1 according to the flow direction of flue gas, and a flue gas outlet 3 is arranged at the upper part of the other side of the adsorption tower 1, and is characterized in that: be provided with double baffle door 4 in the flue gas entry 2 of adsorption tower 1, be provided with single baffle door 5 in the flue gas exit 3 of adsorption tower 1, be connected with first pipeline L1 at the tower bottom of adsorption tower 1, be equipped with first valve 6 on the last section of first pipeline L1, the front end and the first pipeline L1 of second pipeline L2 are connected and the rear end of second pipeline L2 is connected with the space intercommunication between two baffle doors around double baffle door 4, be equipped with second valve 7 on the second pipeline L2, the front end of third pipeline L3 is connected on first pipeline L1 and this tie point is located between second pipeline L2 and the first valve 6, and be equipped with third valve 8 on the third pipeline L3, fourth pipeline L4 is equipped with fourth valve 9 in the low reaches position of third valve 8 and third pipeline L3 intercommunication, be equipped with on the fourth pipeline L4.
Preferably, the system further comprises a temperature monitor 10, wherein the temperature monitor 10 is used for monitoring the temperature in the adsorption tower 1.
Preferably, the upstream end of the first conduit L1 is connected to an inert gas supply conduit or an inert gas supply source; preferably, the inert gas is one of nitrogen, helium or argon, more preferably nitrogen.
Preferably, the upstream end of the fourth pipe L4 is connected to an ammonia gas supply pipe or an ammonia gas supply source.
Preferably, the temperature detecting probe of the temperature detector 10 penetrates through the side wall of the adsorption tower and extends into the space of the adsorption tower; preferably, the temperature detecting probe is an infrared detecting type temperature detector or a thermocouple type temperature detector.
According to the present invention, there is also provided an inert gas protection method of an activated carbon adsorption tower, the method comprising the steps of:
1) The adsorption tower system normally operates, and the temperature monitor 10 monitors the temperature in the adsorption tower 1 in real time;
2) The double baffle door 4 and the single baffle door 5 are both opened, and the flue gas enters the adsorption tower 1 from the flue gas inlet 2 and is discharged from the flue gas outlet 3;
3) The fourth valve 9 is opened, ammonia gas is introduced into the adsorption tower 1 through the fourth pipeline L4, and meanwhile, the first valve 6, the second valve 7 and the third valve 8 are closed, and the temperature monitor 10 displays that the temperature in the adsorption tower 1 is lower than 150 ℃;
4) When the temperature in the tower is less than 150 ℃, the adsorption tower system normally operates, but when the temperature in the tower is more than or equal to 150 ℃, the double-baffle door 4, the single-baffle door 5 and the valves are correspondingly operated according to the specific temperature displayed by the temperature monitor 10.
Preferably, when the temperature monitor 10 shows that the temperature in the adsorption tower 1 is greater than or equal to 150 ℃ and less than 160 ℃, the operation of the step 4 is specifically as follows: the first valve 6 is opened and inert gas is introduced into the column bottom via the first pipe L1.
Preferably, when the temperature monitor 10 shows that the temperature in the adsorption tower 1 is not less than 160 ℃, the operation of the step 4 is specifically as follows:
the double baffle door 4 and the single baffle door 5 are closed to block smoke, the fourth valve 9 is closed to stop introducing ammonia gas into the tower, the second valve 7 is opened, inert gas is introduced into the space between the front baffle door and the rear baffle door of the double baffle door 4 through the second pipeline L2 to block oxygen, the third valve 8 is opened, and inert gas is introduced into the adsorption tower 1 through the third pipeline L3; preferably, the first valve 6 is opened simultaneously with the opening of the second valve 7 and the third valve 8, and inert gas is introduced into the bottom of the column via the first pipe L1.
Preferably, the inert gas is one of nitrogen, helium or argon, preferably nitrogen.
When the flue gas purification system operates normally, the double baffle door 4 and the single baffle door 5 are both opened, so that flue gas smoothly passes through the adsorption tower 1; the fourth valve 9 is opened, ammonia gas is sprayed into the tower, and denitration is achieved; the first valve 6, the second valve 7 and the third valve 8 are closed. At this time, the temperature monitor showed that the temperature in the adsorption tower was less than 150 ℃.
When the temperature in the tower is more than or equal to 150 ℃, the first valve 6 is opened, and nitrogen is introduced into the tower bottom. The reason is that: the activated carbon at the bottom of the tower is not contacted with the flue gas, that is, the activated carbon at the bottom of the tower can not release heat to the flue gas, and if the temperature in the tower reaches 150 ℃, the temperature is higher when the activated carbon is fed to the bottom of the tower. The active carbon at the bottom of the tower is directly contacted with the atmosphere after being discharged by the rotary valve, so that inert gas is introduced into the bottom of the tower to isolate air and reduce the temperature of the active carbon in order to prevent high temperature and even fire.
When the temperature in the tower is more than or equal to 160 ℃, the double baffle door 4 and the single baffle door 5 are closed to isolate the smoke; the fourth valve 9 is closed, and the ammonia gas which is explosive gas is stopped being introduced into the tower; the second valve 7 is opened, inert gas is introduced into the double-baffle door, and oxygen is blocked; the third valve 8 is opened, and inert gas is injected into the inlet of the adsorption tower through the primary ammonia injection port. At the moment, inert gas passes through the activated carbon bed layer from the inlet to the outlet along the running direction of the original flue gas and passes through the activated carbon bed layer in countercurrent from bottom to top in the opposite direction to the running direction of the activated carbon, so that the omnibearing protection of the activated carbon bed layer is realized. By utilizing the air leakage of the single baffle door of the outlet of the adsorption tower, inert gas is discharged through the single baffle door, so that the pressure in the adsorption tower is ensured not to be too high.
The system of the invention can lead the inert gas to flow regularly in the tower, thereby achieving the best cooling or fire extinguishing effect.
Claims (11)
1. The inert gas protection system of the active carbon adsorption tower comprises an adsorption tower (1), a flue gas inlet (2) is formed in the lower portion of one side of the adsorption tower (1) according to the flow direction of flue gas, and a flue gas outlet (3) is formed in the upper portion of the other side of the adsorption tower (1), and is characterized in that: a double-baffle door (4) is arranged in a flue gas inlet (2) of the adsorption tower (1), a single-baffle door (5) is arranged in a flue gas outlet (3) of the adsorption tower (1), a first pipeline (L1) is connected to the bottom of the adsorption tower (1), a first valve (6) is arranged at the tail end of the first pipeline (L1), the front end of a second pipeline (L2) is connected with the first pipeline (L1) and the rear end of the second pipeline (L2) is communicated with a space between the front baffle door and the rear baffle door of the double-baffle door (4), a second valve (7) is arranged on the second pipeline (L2), the front end of a third pipeline (L3) is connected to the first pipeline (L1) and the connecting point is positioned between the second pipeline (L2) and the first valve (6), a third valve (8) is arranged on the third pipeline (L3) and is communicated with a downstream space of the double-baffle door (4) of the flue gas inlet (2), and a fourth pipeline (L4) is arranged at the downstream position of the third valve (L4) and is communicated with the fourth valve (4); the upstream end of the first pipe (L1) is connected to an inert gas supply pipe or an inert gas supply source; the upstream end of the fourth pipe (L4) is connected to an ammonia gas supply pipe or an ammonia gas supply source.
2. An inert gas protection system according to claim 1, characterized in that: the system further comprises a temperature monitor (10), wherein the temperature monitor (10) is used for monitoring the temperature in the adsorption tower (1).
3. An inert gas protection system according to claim 1 or 2, characterized in that: the inert gas is one of nitrogen, helium or argon.
4. An inert gas protection system according to claim 3, characterized in that: the inert gas is nitrogen.
5. An inert gas protection system according to claim 2, wherein the temperature detection probe of the temperature detector (10) extends into the adsorption column space through the side wall of the adsorption column; the temperature detection probe is an infrared detection type temperature detector or a thermocouple type temperature detector.
6. A method of inert gas protection of an activated carbon adsorption column using the inert gas protection system of any one of claims 2-5, the method comprising the steps of:
1) The adsorption tower system normally operates, and a temperature monitor (10) monitors the temperature in the adsorption tower (1) in real time;
2) The double baffle door (4) and the single baffle door (5) are both opened, and the flue gas enters the adsorption tower (1) from the flue gas inlet (2) and is discharged from the flue gas outlet (3);
3) The fourth valve (9) is opened, ammonia gas is introduced into the adsorption tower (1) through the fourth pipeline (L4), and meanwhile, the first valve (6), the second valve (7) and the third valve (8) are closed, and the temperature monitor (10) displays that the temperature in the adsorption tower (1) is less than 150 ℃;
4) When the temperature in the tower is less than 150 ℃, the adsorption tower system normally operates, but when the temperature in the tower is more than or equal to 150 ℃, the double-baffle door (4), the single-baffle door (5) and the valves are correspondingly operated according to the specific temperature displayed by the temperature monitor (10).
7. The method according to claim 6, wherein: when the temperature monitor (10) shows that the temperature in the adsorption tower (1) is more than or equal to 150 ℃ and less than 160 ℃, the operation of the step 4) is specifically as follows: the first valve (6) is opened, and inert gas is introduced into the bottom of the tower through the first pipeline (L1).
8. The method according to claim 6, wherein: when the temperature monitor (10) shows that the temperature in the adsorption tower (1) is more than or equal to 160 ℃, the operation of the step 4) is specifically as follows:
the double-baffle door (4) and the single-baffle door (5) are closed to separate the flue gas, the fourth valve (9) is closed to stop introducing ammonia gas into the tower, the second valve (7) is opened, inert gas is introduced into a space between the front baffle door and the rear baffle door of the double-baffle door (4) through the second pipeline (L2), oxygen is separated, the third valve (8) is opened, and inert gas is introduced into the adsorption tower (1) through the third pipeline (L3).
9. The method according to claim 8, wherein: the second valve (7) and the third valve (8) are opened, and simultaneously the first valve (6) is opened, and inert gas is introduced into the bottom of the tower through the first pipeline (L1).
10. The method according to any one of claims 6-9, characterized in that: the inert gas is one of nitrogen, helium or argon.
11. The method according to claim 10, wherein: the inert gas is nitrogen.
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| CN109331651A (en) * | 2018-11-29 | 2019-02-15 | 国电环境保护研究院有限公司 | A kind of shielding system and partition method of desulphurization denitration tower |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4087260A (en) * | 1976-04-17 | 1978-05-02 | Ceagfilter Und Entstaubungstechnik Gmbh | Apparatus for sorption filters and method for operating them |
| US4088460A (en) * | 1975-11-05 | 1978-05-09 | Ceagfilter Und Entstaubungstechnik Gmbh | Purifying an air or gas stream containing combustible vaporous or gaseous impurities |
| DE4422493A1 (en) * | 1994-06-28 | 1996-01-04 | Antipoll Recycling Consult | Method for heating and cooling active carbon granules on continual cycle |
| JP2002058956A (en) * | 2000-08-17 | 2002-02-26 | Sumitomo Heavy Ind Ltd | Exhaust gas treating method and apparatus |
| JP2003126651A (en) * | 2001-10-26 | 2003-05-07 | Sumitomo Heavy Ind Ltd | Exhaust gas treatment apparatus |
| CN105688622A (en) * | 2014-11-28 | 2016-06-22 | 中冶长天国际工程有限责任公司 | A flue gas desulphurization denitration method adopting two adsorption columns in series connection and a device therefor |
-
2017
- 2017-05-08 CN CN201710315539.XA patent/CN107998818B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4088460A (en) * | 1975-11-05 | 1978-05-09 | Ceagfilter Und Entstaubungstechnik Gmbh | Purifying an air or gas stream containing combustible vaporous or gaseous impurities |
| US4087260A (en) * | 1976-04-17 | 1978-05-02 | Ceagfilter Und Entstaubungstechnik Gmbh | Apparatus for sorption filters and method for operating them |
| DE4422493A1 (en) * | 1994-06-28 | 1996-01-04 | Antipoll Recycling Consult | Method for heating and cooling active carbon granules on continual cycle |
| JP2002058956A (en) * | 2000-08-17 | 2002-02-26 | Sumitomo Heavy Ind Ltd | Exhaust gas treating method and apparatus |
| JP2003126651A (en) * | 2001-10-26 | 2003-05-07 | Sumitomo Heavy Ind Ltd | Exhaust gas treatment apparatus |
| CN105688622A (en) * | 2014-11-28 | 2016-06-22 | 中冶长天国际工程有限责任公司 | A flue gas desulphurization denitration method adopting two adsorption columns in series connection and a device therefor |
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