CN103405988A - Smoke cooling system and method - Google Patents
Smoke cooling system and method Download PDFInfo
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- CN103405988A CN103405988A CN2013102748101A CN201310274810A CN103405988A CN 103405988 A CN103405988 A CN 103405988A CN 2013102748101 A CN2013102748101 A CN 2013102748101A CN 201310274810 A CN201310274810 A CN 201310274810A CN 103405988 A CN103405988 A CN 103405988A
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Abstract
The invention discloses a smoke cooling system, and relates to a smoke cooling system and method used for an activated carbon or active coke dry desulfurization adsorption tower, aiming at providing the smoke cooling system and method for being capable of controlling the temperature of smoke entering the adsorption tower and preventing activated carbon or activated coke from generating a partial hot point. The smoke cooling system provided by the invention comprises a smoke cooler, an external air cooler, first and second temperature sensors and a first smoke pipe, wherein one end of the first smoke pipe is fixedly arranged on an air inlet of the adsorption tower; the air inlet of the adsorption tower is provided with an air inlet baffle, the other end of the first smoke pipe is communicated with a smoke discharge port, both the external air cooler and the smoke cooler are arranged on the first smoke pipe, and the smoke cooler is arranged between the external air cooler and the adsorption tower; the first temperature sensor is arranged between the external air cooler and the smoke cooler, the second temperature sensor is arranged between the smoke cooler and the adsorption tower, and the external air cooler is provided with the baffle capable of regulating the air input.
Description
Technical field
The present invention relates to the desulphurization plant field, particularly relate to a kind of for active carbon or active coke dry-method desulfuration adsorption tower flue gas cooling system and method.
Background technology
Activated coke or Activated Carbon Flue Gas Desulfurization Technology belong to dry type absorption method sulfur removal technology, rely on activated coke or active carbon to the absorption of sulfur dioxide and are parsed the flue gas desulfurization circulation.Because activated coke or active carbon have the spectrum adsorptivity, this technology can remove multiple harmful substances simultaneously.In sweetening process, basically do not consume water, do not have waste water, waste residue to produce, have excellent environmental-protecting performance.Desulfurization product is the high concentration sulfur dioxide gas, can produce the products such as sulfuric acid, sulphur, sulfur dioxide liquid, chemical fertilizer, can effectively alleviate the problem of resource shortage.
When purifying iron-smelter, the adsorption tower with having activated coke or active carbon with metal, is fabricated to the iron making and sintering technique of purpose, the fossil fuel of steam power plant (coal), in the combustion process of coke or its compound, produce, in the flue gas of discharge, in the flue gas perhaps discharged in industry/life scrap incinerator, during contained pollution sources, because flue gas itself has higher temperature, add flue gas by after the blower fan adiabatic compression by post bake, when the flue-gas temperature that enters adsorption tower surpasses 150 ℃, can make active carbon or activated coke in adsorption tower produce hot localised points, if flue-gas temperature continues over 150 ℃, make focus produce fiery point, active carbon or activated coke can continue oxidation, active carbon or activated coke were lost efficacy even burns, thereby cause adsorption tower to damage.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flue-gas-cooling system, can control the temperature of the flue gas that enters adsorption tower, avoids active carbon or activated coke in adsorption tower to produce hot localised points.
Flue-gas-cooling system of the present invention, comprise gas cooler, outer Gas Cooler, the first temperature sensor, the second temperature sensor and the first fume pipe, one end of the first fume pipe is fixedly mounted on the air inlet of adsorption tower, the air inlet baffle plate is installed on the air inlet of described adsorption tower, the other end of the first fume pipe is communicated with exhaust opening, described outer Gas Cooler is arranged on the first fume pipe, described gas cooler also is arranged on the first fume pipe, and gas cooler is between outer Gas Cooler and adsorption tower, described the first temperature sensor and the second temperature sensor are all installed on the first fume pipe, and the first temperature sensor is between outer Gas Cooler and gas cooler, the second temperature sensor is between gas cooler and adsorption tower, on the outer gas air inlet of outer Gas Cooler, be equipped with can adjusting air inflow quantity baffle plate.
Flue-gas-cooling system of the present invention, also comprise the second fume pipe, one end of described the second fume pipe is connected on the first fume pipe, the junction of the second fume pipe and the first fume pipe is between exhaust opening and outer Gas Cooler, the other end of described the second fume pipe is connected with chimney, on described the second fume pipe, master shield is installed, on described the first fume pipe, master shield also is installed, the master shield on described the first fume pipe is between outer Gas Cooler and first, second fume pipe junction.
Flue-gas-cooling system of the present invention, wherein said gas cooler comprises housing, shower, the upper end of described housing offers air inlet, the lower end of housing offers gas outlet, described shower is arranged in housing, and some nozzles are installed on described shower, and the outlet of nozzle all down, described nozzle can spray water droplet and compressed-air actuated mixture, and the diameter of described water droplet is less than 60 microns.
Flue-gas-cooling system of the present invention, also comprise three-temperature sensor, and three-temperature sensor is arranged in adsorption tower.
Flue-gas-cooling system difference from prior art of the present invention is that the present invention is by installing gas cooler on the first fume pipe pass into flue gas in adsorption tower, outer Gas Cooler, the first temperature sensor, the second temperature sensor, by the first temperature sensor, detect and enter the flue-gas temperature in the first fume pipe, and to the flue gas of excess Temperature, carry out cooling by gas cooler and outer Gas Cooler, then by the second temperature sensor, detect cooled flue-gas temperature, assurance enters the critical-temperature that the interior flue gas of adsorption tower is no more than active carbon or activated coke work, thereby can effectively avoid active carbon or activated coke in adsorption tower to produce hot localised points, avoid active carbon or activated coke to lose efficacy, burning, damage adsorption tower.
Flue-gas-cooling system of the present invention, by the second fume pipe is set,, while still surpassing critical-temperature, directly discharge overheated flue gas by the second fume pipe when flue gas after gas cooler and the cooling of outer Gas Cooler, avoid overheated flue gas to enter adsorption tower.By on the shower of gas cooler, nozzle being set, nozzle sprays water droplet and compressed-air actuated mixture downwards, cooling water forms and is less than the water droplet of 60 microns, with air inlet from upper end, entering flue gas mixes, water droplet in mixture can play the effect to flue gas cool-down, water droplet when giving flue gas cool-down, the rear evaporation fully of being heated, thus can not form sulfuric acid and cause adsorption tower or smoke conveying duct to be corroded with oxysulfide chemical combination.By three-temperature sensor is installed in adsorption tower, can direct-detection to the temperature of active carbon or activated coke, avoid active carbon or activated coke focus to occur.
Another technical problem that the present invention solves is to provide a kind ofly uses above-mentioned flue-gas-cooling system to carry out cooling method to the flue gas entered in adsorption tower, avoids active carbon or activated coke in adsorption tower to produce hot localised points.
A kind of flue gas cooling means of the present invention, used above-mentioned flue-gas-cooling system to carry out flue gas cooling, comprises the following steps:
(1), flue gas is entered in adsorption tower from the first fume pipe;
(2), the flue-gas temperature that detects when the first temperature sensor is while being no more than 150 ℃, closes the outer gas air inlet of outer Gas Cooler, gas cooler does not carry out cooling to flue gas simultaneously;
(3), the flue-gas temperature that detects when the first temperature sensor is while surpassing 150 ℃, gas cooler starts, the flue-gas temperature that the second temperature sensor is detected is no more than 150 ℃;
(4), when the flue-gas temperature detected when the second temperature sensor surpasses 150 ℃, continue to start gas cooler, and open simultaneously the air inlet of outer Gas Cooler, gas outside supplementing in the first fume pipe, to the flue gas dilution cooling, the flue-gas temperature that the second temperature sensor is detected is no more than 150 ℃.
Flue gas cooling means of the present invention, in wherein said step (4), the unlatching size of the baffle plate by controlling outer Gas Cooler air inlet, control the outer gas that enters the first fume pipe, makes flue-gas temperature that the second temperature sensor detects lower than 150 ℃.
Flue gas cooling means of the present invention, after wherein said gas cooler and outer Gas Cooler are all opened, when the temperature that the second temperature sensor detects surpasses 150 ℃, close the master shield on the first fume pipe, open the master shield on the second fume pipe, make flue gas directly enter chimney from the second fume pipe, open simultaneously outer Gas Cooler, close gas cooler, make outer gas enter adsorption tower by the first fume pipe.
Adopt flue gas cooling means of the present invention, can guarantee to enter the critical-temperature that the interior flue gas of adsorption tower is no more than active carbon or activated coke work, thereby can effectively avoid active carbon or activated coke in adsorption tower to produce hot localised points, avoid active carbon or activated coke to lose efficacy, burn, damage adsorption tower.
The invention will be further described below in conjunction with accompanying drawing.
The accompanying drawing explanation
Fig. 1 is the structural representation of flue-gas-cooling system of the present invention;
Fig. 2 is the structural representation that flue-gas-cooling system of the present invention is used.
The specific embodiment
When flue gas enters adsorption tower 7 continuously with 150 ° of temperature more than C, in adsorption tower, start active carbon overheats and forms little kindling material from certain, this kindling material starts again to transfer to other active carbons in module, and this module can be in for a long time can't adsorb and the halted state of catalytic activity.Therefore, for active carbon is keeping its normal best-of-breed functionality below 150 ℃, and adsorption tower can not reduce because of " focus " running and the efficiency of whole system, need to adopt following system to carry out coolingly to entering flue-gas temperature in adsorption tower, it is maintained below 150 ℃.
As shown in Figure 1, flue-gas-cooling system of the present invention comprises gas cooler 1, outer Gas Cooler 2, the first temperature sensor 3, the second temperature sensor 4, three-temperature sensor, the first fume pipe 6 and the second fume pipe 9.One end of the first fume pipe 6 is fixedly mounted on the air inlet of adsorption tower 7, the air inlet baffle plate is installed on the air inlet of adsorption tower 7, the other end of the first fume pipe 6 is communicated with exhaust opening 8, outer Gas Cooler 2 is arranged on the first fume pipe 6, gas cooler 1 also is arranged on the first fume pipe 6, and gas cooler 1 is between outer Gas Cooler 2 and adsorption tower 7, the first temperature sensor 3 and the second temperature sensor 4 are all installed on the first fume pipe 6, and the first temperature sensor 3 is between outer Gas Cooler 2 and gas cooler 1, the second temperature sensor 4 is between gas cooler 1 and adsorption tower 7, three-temperature sensor is arranged in adsorption tower 7.On the outer gas air inlet of outer Gas Cooler 2, be equipped with can adjusting air inflow quantity baffle plate.One end of the second fume pipe 9 is connected on the first fume pipe 6, the junction of the second fume pipe 9 and the first fume pipe 6 is between exhaust opening 8 and outer Gas Cooler 2, the other end of the second fume pipe 9 is connected with chimney 10, on the second fume pipe 9, master shield is installed, on the first fume pipe 6, master shield also is installed, the master shield on described the first fume pipe 6 is between outer Gas Cooler 2 and first, second fume pipe 6,9 junctions.Gas cooler 1 in the present invention comprises housing, shower, the lower end of housing offers air inlet, the upper end of housing offers gas outlet, and shower is arranged in housing, and the upper end of housing offers air inlet, the lower end of housing offers gas outlet, shower is arranged in housing, and some nozzles are installed on shower, and the outlet of nozzle all down, nozzle can spray water droplet and compressed-air actuated mixture, and the diameter of water droplet is less than 60 microns.
A kind of flue gas cooling means of the present invention, used above-mentioned flue-gas-cooling system to carry out flue gas cooling, carries out according to the following step:
1, flue gas is entered in adsorption tower 7 from the first fume pipe 6;
When the flue-gas temperature 2, detected when the first temperature sensor 3 is no more than 150 ℃, close the outer gas air inlet of outer Gas Cooler 2, gas cooler 1 does not carry out cooling to flue gas simultaneously;
When the flue-gas temperature 3, detected when the first temperature sensor 3 surpassed 150 ℃, gas cooler 1 started, and the flue-gas temperature that the second temperature sensor 4 is detected is no more than 150 ℃;
When the flue-gas temperature 4, detected when the second temperature sensor 4 surpasses 150 ℃, continue to start gas cooler, and the air inlet of opening simultaneously outer Gas Cooler 2 to the first fume pipe 6 is interior supplement outside gas, to the flue gas dilution cooling, the flue-gas temperature that the second temperature sensor 4 is detected is no more than 150 ℃.
In step 4, the unlatching size of the baffle plate by controlling outer Gas Cooler 2 air inlets, control the outer gas that enters the first fume pipe 6, makes flue-gas temperature that the second temperature sensor 4 detects lower than 150 ℃.After if gas cooler 1 is all opened with outer Gas Cooler 2, when the temperature that the second temperature sensor 4 detects still continues 150 ℃, close the master shield on the first fume pipe 6, open the master shield on the second fume pipe 9, make flue gas directly enter chimney 10 from the second fume pipe 9, open simultaneously outer Gas Cooler 2, close gas cooler 1, make outer gas enter adsorption tower 7 by the first fume pipe 6.
It in accompanying drawing 2, is the example that application flue-gas-cooling system of the present invention is regulated flue-gas temperature.
The iron-smelter sinter fume of take is example, the reason that temperature rises has two kinds, the first, in sintering machine, cause temperature to rise because of equipment operation and the raw material condition of doing man-hour, the second, the flue gas of being discharged by sintering machine by two pressure fans, 13,14 adiabatic compression, causes temperature to rise in the process through precipitator 12 and sack cleaner 11.
Usually, flue-gas temperature is the highest when rising to 150 ° of C, the first temperature sensor 3 detects abnormal temperature, gas cooler 1 drips with compressed-air actuated mixture and reduces flue-gas temperature by water spray, the second temperature sensor 4 is confirmed, assurance deliver to flue-gas temperature in adsorption tower 7 dropped to 150 ° of C following after, make flue gas through normal flue gas processing procedure.Spray the high-pressure delivery pump of water by gas cooler 1 interior installation in nozzle with after compressed air mixes, by this pressure, gush out with the water droplet that is less than 60 microns, and cooled flue gas, then evaporate fully, and can not cause the impacts such as adsorption tower 7 or flue gas delivery pipe road are corroded.
If flue-gas-cooling system detects the flue-gas temperature that enters adsorption tower 7 while being up to the situation of 200 ° of C, also can it be cooled to normal temperature by flue-gas-cooling system.This cooling system reduces temperature by gas cooler 1 preliminary (for the first time), then by outer Gas Cooler 2, further reduces temperature for the second time.
To the iron-smelter sinter fume, the intake air temperature condition of native system 180 ° of C of 90 – normally during acting, the highest 200 ° of C.In order to successfully manage different temperature conditions and effectively to use this flue-gas-cooling system, use step specific as follows:
Step 1: the Cooling Process in the gas cooler 1 of adsorption tower 7 front ends.When the temperature that the first temperature sensor of adsorption tower 7 front ends detects surpasses 150 ° of C, as first step, start to spray air-water mixture with the gas cooler 1 of adsorption tower front end.Purpose of design is, by spraying small water droplet, flue-gas temperature is cooled to 150 ° below C.The temperature difference between the variation of water consumption and actual temperature and design temperature is proportional.
Step 2: be synchronize with step 1, outer gas dilution sack cleaner 11 rear ends.In gas cooler 1 after spraying cooling procedure, the temperature that the second temperature sensor 4 of adsorption tower 7 front ends detects does not but lower all the time, in this case, as second step, supplement and carry out outer gas dilution operation with the outer Gas Cooler 2 of sack cleaner 11 rear ends.When the temperature that the second temperature sensor 4 detects surpassed 150 ° of C, externally the air inlet baffle plate of Gas Cooler 2 was adjusted immediately, in order to introduce outer gas and mix with flue gas by outer Gas Cooler 2.
Step 3: directly discharge high-temperature flue gas from chimney by the second fume pipe 9, and only permitted outer gas and introduce in adsorption tower.After spraying cooling and outer gas dilution; the temperature that adsorption tower front end the second temperature sensor 4 detects descends still abundant not; continue to maintain 150 ° more than C; in this case; need by second fume pipe 9 in sack cleaner 11 the place aheads, high-temperature flue gas directly to be discharged from chimney; and only permitted outer gas and introduce in adsorption tower 7 by outer Gas Cooler 2, not damaged with the protection adsorption tower.
Step 4: return to normal operation.The temperature that adsorption tower front end the second temperature sensor 4 detects is during lower than 150 ° of C, and bypass mode of operation will return to the normal operation mode.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (7)
1. flue-gas-cooling system, it is characterized in that: comprise gas cooler (1), outer Gas Cooler (2), the first temperature sensor (3), the second temperature sensor (4) and the first fume pipe (6), one end of described the first fume pipe (6) is fixedly mounted on the air inlet of adsorption tower (7), on the air inlet of described adsorption tower (7), the air inlet baffle plate is installed, the other end of the first fume pipe (6) is communicated with exhaust opening (8), described outer Gas Cooler (2) is arranged on the first fume pipe (6), described gas cooler (1) also is arranged on the first fume pipe (6), and gas cooler (1) is positioned between outer Gas Cooler (2) and adsorption tower (7), described the first temperature sensor (3) and the second temperature sensor (4) are all installed on the first fume pipe (6), and the first temperature sensor (3) is positioned between outer Gas Cooler (2) and gas cooler (1), the second temperature sensor (4) is positioned between gas cooler (1) and adsorption tower (7), on the outer gas air inlet of described outer Gas Cooler (2), be equipped with can adjusting air inflow quantity baffle plate.
2. flue-gas-cooling system according to claim 1, it is characterized in that: also comprise the second fume pipe (9), one end of described the second fume pipe (9) is connected on the first fume pipe (6), the junction of the second fume pipe (9) and the first fume pipe (6) is positioned between exhaust opening (8) and outer Gas Cooler (2), the other end of described the second fume pipe (9) is connected with chimney (10), on described the second fume pipe (9), master shield is installed, on described the first fume pipe (6), master shield also is installed, master shield on described the first fume pipe (6) is positioned at outer Gas Cooler (2) and first, the second fume pipe (6, 9) between junction.
3. flue-gas-cooling system according to claim 1 and 2, it is characterized in that: described gas cooler (1) comprises housing, shower, the upper end of described housing offers air inlet, the lower end of housing offers gas outlet, described shower is arranged in housing, and some nozzles are installed on described shower, and the outlet of described nozzle all down, described nozzle can spray water droplet and compressed-air actuated mixture, and the diameter of described water droplet is less than 60 microns.
4. flue-gas-cooling system according to claim 3, it is characterized in that: also comprise three-temperature sensor, described three-temperature sensor is arranged in adsorption tower (7).
5. flue gas cooling means, it is cooling that right to use requires 1 described flue-gas-cooling system to carry out flue gas, it is characterized in that, comprises the following steps:
(1), flue gas is entered in adsorption tower (7) from the first fume pipe (6);
(2), the flue-gas temperature that detects when the first temperature sensor (3) is while being no more than 150 ℃, closes the outer gas air inlet of outer Gas Cooler (2), gas cooler (1) does not carry out cooling to flue gas simultaneously;
(3), the flue-gas temperature that detects when the first temperature sensor (3) is while surpassing 150 ℃, gas cooler (1) starts, the flue-gas temperature that the second temperature sensor (4) is detected is no more than 150 ℃;
(4), when the flue-gas temperature detected when the second temperature sensor (4) surpasses 150 ℃, continue to start gas cooler (1), and open simultaneously outer Gas Cooler (2) air inlet gas outside supplementing in the first fume pipe (6), to the flue gas dilution cooling, the flue-gas temperature that the second temperature sensor (4) is detected is no more than 150 ℃.
6. flue gas cooling means according to claim 5, it is characterized in that: in described step (4), the unlatching size of the baffle plate by controlling outer Gas Cooler (2) air inlet, control the outer gas that enters the first fume pipe (6), make flue-gas temperature that the second temperature sensor (4) detects lower than 150 ℃.
7. flue gas cooling means according to claim 6, it is characterized in that: after described gas cooler (1) is all opened with outer Gas Cooler (2), when the temperature that the second temperature sensor (4) detects surpasses 150 ℃, close the master shield on the first fume pipe (6), open the master shield on the second fume pipe (9), make flue gas directly enter chimney (10) from the second fume pipe (9), open simultaneously outer Gas Cooler (2), close gas cooler (1), make outer gas enter adsorption tower (7) by the first fume pipe (6).
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| CN201310274810.1A CN103405988B (en) | 2013-07-02 | 2013-07-02 | Flue-gas-cooling system and method |
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| CN201310274810.1A CN103405988B (en) | 2013-07-02 | 2013-07-02 | Flue-gas-cooling system and method |
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| CN107561222A (en) * | 2017-09-30 | 2018-01-09 | 浙江力聚热水机有限公司 | A kind of flue gas analysis device |
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| CN110538620A (en) * | 2018-11-14 | 2019-12-06 | 北京北方华创微电子装备有限公司 | Pressure control system and pressure control method of reaction chamber |
| CN113438982A (en) * | 2018-11-27 | 2021-09-24 | 沃特斯科林埃尔系统公司 | Temperature controlled exhaust flow water filter for coffee roaster |
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| CN113438982A (en) * | 2018-11-27 | 2021-09-24 | 沃特斯科林埃尔系统公司 | Temperature controlled exhaust flow water filter for coffee roaster |
| CN113438982B (en) * | 2018-11-27 | 2023-09-15 | 沃特斯科林埃尔系统公司 | Temperature controlled exhaust stream water filter for coffee roaster |
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| Publication number | Publication date |
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| CN103405988B (en) | 2015-08-26 |
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