CN201871322U - Device for removing low-concentration sulfur dioxide in flue gas - Google Patents
Device for removing low-concentration sulfur dioxide in flue gas Download PDFInfo
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- CN201871322U CN201871322U CN201020636254XU CN201020636254U CN201871322U CN 201871322 U CN201871322 U CN 201871322U CN 201020636254X U CN201020636254X U CN 201020636254XU CN 201020636254 U CN201020636254 U CN 201020636254U CN 201871322 U CN201871322 U CN 201871322U
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Abstract
The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to a device for removing low-concentration sulfur dioxide in flue gas, which solves the defects existing in the existing flue gas desulfurization. The device for removing the low-concentration sulfur dioxide in the flue gas comprises a rotary packed bed, a gas inlet of the rotary packed bed is connected with a flue gas source containing sulfur dioxide, a liquid inlet of the rotary packed bed is connected with an absorption liquid source, and a liquid outlet of the rotary packed bed is connected a desorption system. The device greatly reduces the generation of sulfate ions in the absorption process, reduces the scaling and the blocking, is beneficial to the absorption efficiency and the desorption rate of rich liquor, and reduces the investment and the running cost.
Description
Technical field
The utility model belongs to the technical field of flue gas desulfurization, is specifically related to a kind of device that removes low-concentration sulfur dioxide in the flue gas.
Background technology
Sulfur in smoke is huge to the harm of animals and plants health and ecological environment, the sulfur dioxide of low concentration particularly, because its flue gas content is big, it is low to administer benefit, so it is effectively administered and becomes a great problem for a long time.Administer SO at present in the world
2The major technique means of polluting are flue gas desulfurization, various countries' research, exploitation and the flue gas desulfurization technique that uses have surpassed kind more than 200, wherein industrialized have kind more than 20 approximately, based on wet desulphurization, its principle mostly is to absorb sulfur in smoke with alkaline absorbent, as lime/lime stone/gypsum method, ammonia process or the like, the absorption equipment of these technologies is in the majority with tower, exist equipment volume huge, floor space is big, problems such as operating cost height, and the desulfurization afterproduct can't effectively be handled, even the product that has has certain value, also mostly need to handle and could utilize, and develop its market and also become one and bear greatly, so the desulfurization afterproduct is mostly thrown aside through a series of processing, its desulfurization result is converted into solid pollution with gaseous contamination like this, and causes the waste of sulphur resource.
Natrium citricum method flue gas desulfurization technique belongs to renewable flue gas desulfurization technique, its absorption liquid steam forces down, nontoxic, can effectively absorb sulfur in smoke, rich solution behind the absorption sulfur dioxide can carry out desorb by methods such as Steam Heating, produce high concentration sulfur dioxide as other industrial chemicals, lean solution continues on for absorption process after the desorb, both avoided secondary pollution, saved the sulphur resource again, but because existing natrium citricum method flue gas desulfurization technique adopts tower to absorb mostly, not only bulky, increased the investment operating cost, and the oxidation side reaction of inferior sulfate radical is serious in absorption process, generates a large amount of sodium hydrogensulfites or sodium sulphate easily, not only fouling easily, occluding device, influence the normal operation of equipment, and reduce the removal efficiency and the desorption efficiency of absorption liquid, the life cycle of absorption liquid is shortened, operating cost increases, and applies thereby limited it.
The existing citrate method that discloses under some ultrasonic wave effects removes the method for sulfur dioxide, Chinese patent CN 1672775A discloses a kind of ultrasonic wave and doughnut contained liquid membrane in conjunction with the device and method that removes sulfur dioxide in the gas, this method adopts the absorption of sulfur dioxide in intensified by ultrasonic wave natrium citricum method flue gas desulfurization technique, absorbs and the doughnut contained liquid membrane absorbs and has the degree of depth of absorption height and the high characteristics of sulfur dioxide removal rate than the filler of routine; Chinese patent CN1660761A, patent CN100386303C and patent CN1736551A disclose a kind of method that removes sulfur dioxide in the citrate solution respectively, promptly respectively ultrasonic wave isolation technics, multiple-frequency supersonic wavelength-division are applied to the desorption step of sulfur dioxide in the natrium citricum method flue gas desulfurization technique from technology and microwave technology, replace traditional Steam Heating desorb, be intended to reduce desorption temperature, the growing amount and the absorption liquid that reduce sulfate radical are rotten; Though these device and methods improve to some extent than traditional tower, but its absorption and desorb operating process are not exclusively continuous, absorption liquid just carries out desorb after absorbing the regular hour, and then circulation absorbs, this semi-continuous operation is unfavorable for industrialization control, and the flue gas treating capacity of Hollow Fiber Membrane Absorption method also is subjected to certain limitation.
At above problem and shortage, the utility model provides a kind of device of continued operation, absorption liquid circulates between absorption liquid storage tank, absorption reactor thermally and desorb reactor, only need the absorption liquid of regular replenishment loss can realize absorbing-continued operation of desorb, the sulfur dioxide removal rate is high and be beneficial to industrialization and amplify.
Summary of the invention
The utility model is in order to solve existing flue gas desulfurization technique above shortcomings, a kind of device that removes low-concentration sulfur dioxide in the flue gas is provided, this device has greatly reduced the generation of sulfate ion in the absorption process, equipment scaling, obstruction have been reduced, the desorption efficiency that helps improving absorption efficiency and absorb rich solution, reduce investment and operating cost, technology desulfuration efficiency height by this device realization, absorption liquid is renewable, desulfurization product is the high concentration sulfur dioxide gas, can be used for acid making system flexibly or produce sulphur etc.
The utility model adopts following technical scheme to realize:
A kind of device that removes low-concentration sulfur dioxide in the flue gas, it comprises rotary packed bed, rotary packed bed gas feed connects the flue gas source that contains sulfur dioxide, and rotary packed bed liquid-inlet connects the absorption liquid source, and rotary packed bed liquid outlet connects desorption system.Leave cavity between filler lower end and the liquid outlet in rotary packed bed,, avoid flooding a phenomenon so that liquid returns the absorption liquid storage tank.
The rotary packed bed adverse current type that can be, cavity axial height h
2Be packing layer axial height h
11/4 ~ 1/3, cavity outer wall vertical partial-length h
3Be cavity axial height h
20 ~ 1 times, cavity bottom channelization angle α=0 ~ 90 °.The rotary packed bed cross flow type that also can be, cavity axial height h
2Be packing layer axial height h
11/5 ~ 1/4, cavity outer wall vertical partial-length h
3Be cavity axial height h
20 ~ 1 times, cavity bottom channelization angle α=0 ~ 90 °.
Desorption system comprises the desorb reactor, the desorb reactor can be rotary packed bed structure, the import of desorb liquid reactor links to each other with rotary packed bed liquid outlet through plate type heat exchanger, circulating pump I and absorption liquid storage tank, the import of desorb gas reactor connects the low-pressure steam source, the outlet of desorb gas reactor is connected with condenser, the liquid outlet of condenser links to each other with the absorption liquid storage tank, and the outlet of desorb liquid reactor links to each other with rotary packed bed liquid-inlet through circulating pump II and plate type heat exchanger.The desorb reactor can be tower.
Rotary packed bed gas feed connects the surge tank that contains sulfur dioxide flue gas, and surge tank links to each other with the flue gas source that contains sulfur dioxide.Rotary packed bed gas feed, rotary packed bed gas vent are provided with the gas sampling point respectively, and the absorption liquid storage tank is provided with the liquid sample point.
The method that removes low-concentration sulfur dioxide in the flue gas by the utility model realization, it is absorption liquid with the citric acid-sodium citrate buffer, rotary packed bed is absorption reactor thermally, concrete steps are as follows: open rotary packed bed, enter rotary packed bed by rotary packed bed liquid-inlet absorption liquid, the flue gas that contains sulfur dioxide enters rotary packed bed from rotary packed bed gas feed, liquid phase contacts in rotary packed bed filler with gas phase and reacts, reacted gas phase is discharged from rotary packed bed gas vent, reacted liquid phase is discharged from rotary packed bed liquid outlet and is entered desorption system, lean solution is returned absorption system continuation circulation absorption after the desorb, the high concentration sulfur dioxide that desorb produces stores, citric acid concentration is 0.1 ~ 1.5mol/L in the absorption liquid, its pH is 2 ~ 6, described rotary packed bed rotating speed is 500 ~ 3000r/min, and entering rotary packed bed liquid-gas ratio is 3 ~ 7L/m
3, rotary packed bed absorption temperature is 30 ~ 60 ℃.Separating and smoking gas is low-pressure steam, and the gas liquid ratio of desorb operation is 800 ~ 1000m
3/ m
3, desorption temperature is 95 ~ 105 ℃.
Hypergravity is rotary packed bed as a kind of novel efficient mass transfer equipment, have series of advantages such as equipment volume is little, residence time of material short, installation and maintenance are convenient, operating cost is low, it is applied to the flue gas desulfurization of natrium citricum method, can overcomes a series of deficiencies of existing flue gas desulfur device.
The relative prior art of the utility model has following beneficial effect:
(1) rotary packed bed in the absorption reactor thermally that the utility model adopts have a mass-transfer efficiency efficiently, can make gas-liquid contact mixing fast, increase the gas-liquid contact area, strengthen the contact effect, greatly improved the removal efficiency of sulfur dioxide in flue gas, reached more than 96%.
(2) described in the utility model rotary packed bed, leave certain cavity between filler lower end and the liquid outlet, be convenient to liquid and return the absorption liquid storage tank, avoid flooding a phenomenon.
(3) absorption reaction of sulfur dioxide is finished rapidly in this reactor, has greatly reduced the growing amount of sulfate radical in the course of reaction, has avoided the fouling of equipment in the absorption process, obstruction, helps follow-up desorb operation, and the life cycle that has prolonged absorption liquid.
(4) this reactor is used for the flue gas desulfurization of natrium citricum method, and the sulfur dioxide for low volume fraction under lower liquid-gas ratio has good assimilation effect equally, and the liquid-gas ratio of general natrium citricum method flue gas desulfurization technique need reach 5 ~ 10L/m
3, and the utility model adopts hypergravity rotary packed bed at 3 ~ 7 L/m
3Liquid-gas ratio under still can reach sulfur dioxide removal rate more than 96%.
(5) the utility model adopted rotary packed bedly has advantages such as equipment volume is little, light weight, installation and maintenance are convenient, the start-stop car is convenient.
(6) desorb reactor described in the utility model can be common towers such as the rotary packed bed or spray column of hypergravity, take the mode of low-pressure steam heating, rotary packed bed hypergravity as the desorb reactor, can greatly strengthen gas-liquid mass transfer and heat transfer, reduce the gas liquid ratio of desorb reaction, reduce the consumption of steam, thereby reach energy saving purposes.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model
Fig. 2 is the rotary packed bed structural representation of adverse current type
Fig. 3 is the rotary packed bed structural representation of cross flow type
Among the figure: 1-absorption liquid storage tank, 2-circulating pump I, 3-valve I, 4-fluid flowmeter I, 5-is rotary packed bed, the 6-surge tank, 7-gas flowmeter I, 8-gas flowmeter II, 9-valve II, 10-valve III, 11-sulfur dioxide steel cylinder, 12-blower fan, 13-circulating pump II, the 14-plate type heat exchanger, 15-desorb reactor, 16-condenser, 17-valve IV, 18-gas flowmeter III, 19-fluid flowmeter II, 20-valve V, the outlet of 21-desorb liquid reactor, the import of 22-desorb liquid reactor, the outlet of 23-desorb gas reactor, the import of 24-desorb gas reactor;
5.1-rotary packed bed liquid-inlet, the rotary packed bed gas vent of 5.2-, the rotary packed bed gas feed of 5.3-, 5.4-cavity, the rotary packed bed liquid outlet of 5.5-, 5.6-motor;
h
1-packing layer axial height; h
2-cavity axial height; h
3-cavity outer wall vertical partial-length, α-cavity bottom channelization angle.
The specific embodiment
In conjunction with the accompanying drawings the specific embodiment of the present utility model is described further.
Remove the device of low-concentration sulfur dioxide in the flue gas, it comprises rotary packed bed 5, rotary packed bed gas feed 5.3 connects the flue gas source that contains sulfur dioxide, and rotary packed bed liquid-inlet 5.1 connects the absorption liquid source, and rotary packed bed liquid outlet 5.5 connects desorption system.Leave cavity 5.4 between filler lower end and the liquid outlet in rotary packed bed.
Rotary packed bed 5 can be adverse current type, cavity axial height h
2Be packing layer axial height h
11/4 ~ 1/3, cavity outer wall vertical partial-length h
3Be cavity axial height h
20 ~ 1 times, cavity bottom channelization angle α=0 ~ 90 °.Rotary packed bed 5 also can be cross flow type, cavity axial height h
2Be packing layer axial height h
11/5 ~ 1/4, cavity outer wall vertical partial-length h
3Be cavity axial height h
20 ~ 1 times, cavity bottom channelization angle α=0 ~ 90 °.
Desorption system comprises desorb reactor 15, the desorb reactor can be rotary packed bed structure, the import 22 of desorb liquid reactor links to each other with rotary packed bed liquid outlet 5.5 through plate type heat exchanger 14, circulating pump I 2 and absorption liquid storage tank 1, desorb gas reactor import 24 connects the low-pressure steam source, desorb gas reactor outlet 23 is connected with condenser 16, the liquid outlet of condenser links to each other with absorption liquid storage tank 1, and desorb liquid reactor outlet 21 links to each other with rotary packed bed liquid-inlet 5.1 through circulating pump II 13 and plate type heat exchanger 14.Desorb reactor 15 also can be tower.
Rotary packed bed gas feed 5.3 connects the surge tank 6 that contains sulfur dioxide flue gas, and surge tank 6 links to each other with the flue gas source that contains sulfur dioxide.
The method that removes low-concentration sulfur dioxide in the flue gas that realizes by the utility model is absorption liquid with the citric acid-sodium citrate buffer, and hypergravity is rotary packed bed to be absorption reactor thermally, and concrete steps are as follows:
Open rotary packed bed 5, regulate rotating speed at 500r/min ~ 3000r/min, the absorption liquid of certain citric acid concentration and pH is entered by rotary packed bed liquid-inlet 5.1 with certain flow velocity through fluid flowmeter I 4 through circulating pump I 2 by absorption liquid storage tank 1 rotary packed bed 5, with the SO in the sulfur dioxide steel cylinder 11
2After 7 meterings of gas flowmeter I, after fully mixing, surge tank 6 enters rotary packed bed 5 from rotary packed bed gas feed 5.3 with the air that measures through gas flowmeter II 8 equally by blower fan 12 outputs, gas, liquid mix rapidly in rotary packed bed 5 finishes absorption reaction, purify back gas by rotary packed bed gas vent 5.2 emptyings, absorb SO
2After rich solution enter absorption liquid storage tank 1 by rotary packed bed liquid outlet 5.5.
When the desorb reactor is rotary packed bed structure, the desorb flow process is as follows: the absorption rich solution in the absorption liquid storage tank 1 enters plate type heat exchanger 14 through circulating pump I 2 and heats up after fluid flowmeter II 19 enters desorb reactor 15 by desorb liquid reactor import 22, the absorption rich solution that enters in the desorb reactor 15 is finished the desorb reaction with the low-pressure steam counter current contacting in desorb reactor 15 that is entered by desorb gas reactor import 24 through gas flowmeter III 18 metering, the absorption lean solution that removes behind the sulfur dioxide enters plate type heat exchanger 14 coolings by the outlet 21 of desorb liquid reactor through circulating pump II 13, absorption lean solution in plate type heat exchanger 14 after the cooling continues to finish absorption reaction through 4 meterings of fluid flowmeter I after rotary packed bed liquid-inlet 5.1 enters rotary packed bed 5, the steam that produces after the desorb in the desorb reactor 15 and the mist of sulfur dioxide enter condenser 16 by desorb gas reactor outlet 23, steam is condensed and enters absorption liquid storage tank 1, and the high concentration sulfur dioxide gas stores as industrial chemicals.Whole absorption, desorption process constantly circulation are finished removing sulfur dioxide in flue gas.At rotary packed bed gas feed 5.3, rotary packed bed gas vent 5.2 the gas sampling point is set respectively, monitors SO in the flue gas at any time
2Content is provided with the liquid sample point at absorption liquid storage tank 1, monitors SO in the absorption liquid at any time
2The variation of content and liquid absorption element.
When the parsing reactor was tower, the desorb flow process was as follows: contain a large amount of SO
2The absorption rich solution enter before the desorber regeneration, in plate type heat exchanger, be used for earlier regenerated liquid heating from the desorb reactor.Be rich in SO
2Absorption liquid enter from cat head, with the low-pressure steam counter current contacting, reversely in citrate solution, deviate from SO
2, the absorption liquid after the regeneration is flowed through and is entered absorption system after plate type heat exchanger cools to 30-60 ℃ and recycle.Leave the steam-SO of desorber
2Mist produces high concentration sulfur dioxide and can be used as industrial chemicals after condenser condenses.
Embodiment 1:
Adjusting rotary packed bed 5 rotating speed is 500r/min, is 0.1mol/L with citric acid concentration, and it is rotary packed bed 5 that to be 6 absorption liquid add through rotary packed bed liquid-inlet 5.1 the pH value, and the mass concentration of sulfur dioxide is 2000mg/m
3Simulated flue gas enter rotary packed bedly 5 through rotary packed bed gas feed 5.3, absorb 40 ℃ of temperature, gas flow 60m
3/ h, the adjusting liquid-gas ratio is 7(L/m
3), gas phase, liquid phase contact rapidly in rotary packed bed 5 and react, purifying back gas is discharged by rotary packed bed gas vent 5.2, the citrate solution that is dissolved with sulfur dioxide is discharged by rotary packed bed liquid outlet 5.5, return absorption system and recycle after the desorption system desorb, the gas liquid ratio of desorb operation is 900m
3/ m
3, desorption temperature is 95 ℃, the high concentration sulfur dioxide that produces after the desorb is as industrial chemicals.The removal efficiency of sulfur dioxide is more than 96% in the whole absorption process.
Embodiment 2:
Adjusting rotary packed bed 5 rotating speed is 1000r/min, is 1.5mol/L with citric acid concentration, and it is rotary packed bed 5 that to be 2 absorption liquid add through rotary packed bed liquid-inlet 5.1 the pH value, and the mass concentration of sulfur dioxide is 8500g/m
3Simulated flue gas enter rotary packed bedly 5 through rotary packed bed gas feed 5.3, absorbing temperature is 30 ℃, the adjustments of gas flow is 30m
3/ h, the adjusting liquid-gas ratio is 4(L/m
3), gas phase contacts rapidly in rotary packed bed 5 with liquid phase and reacts.Purify back gas and discharged by rotary packed bed gas vent 5.2, the citrate solution that is dissolved with sulfur dioxide is discharged by rotary packed bed liquid outlet 5.5, returns absorption system and recycle after the desorption system desorb, and the gas liquid ratio of desorb operation is 1000m
3/ m
3, desorption temperature is 100 ℃, the high concentration sulfur dioxide that produces after the desorb is as industrial chemicals.The removal efficiency of sulfur dioxide is more than 98% in the whole absorption process.
Embodiment 3:
Adjusting rotary packed bed 5 rotating speed is 3000r/min, is 1.0mol/L with citric acid concentration, and it is rotary packed bed 5 that to be 4.5 absorption liquid add through rotary packed bed liquid-inlet 5.1 the pH value, and the mass concentration of sulfur dioxide is 5000g/m
3Simulated flue gas enter rotary packed bedly 5 through rotary packed bed gas feed 5.3, absorbing temperature is 60 ℃, the adjustments of gas flow is 40m
3It is 3(L/m that/h regulates liquid-gas ratio
3), gas phase contacts rapidly in rotary packed bed 5 with liquid phase and reacts.Purify back gas and discharged by rotary packed bed gas vent 5.2, the citrate solution that is dissolved with sulfur dioxide is discharged by rotary packed bed liquid outlet 5.5, returns absorption system and recycle after the desorption system desorb, and the gas liquid ratio of desorb operation is 800m
3/ m
3, desorption temperature is that the high concentration sulfur dioxide that produces after 105 ℃ of desorbs is used as industrial chemicals.The removal efficiency of sulfur dioxide is more than 97% in the whole absorption process.
Claims (8)
1. device that removes low-concentration sulfur dioxide in the flue gas, it is characterized in that it comprises rotary packed bed (5), rotary packed bed gas feed (5.3) connects the flue gas source that contains sulfur dioxide, rotary packed bed liquid-inlet (5.1) connects the absorption liquid source, and rotary packed bed liquid outlet (5.5) connects desorption system.
2. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 1 is characterized in that leaving cavity (5.4) between rotary packed bed interior filler lower end and the liquid outlet.
3. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 2 is characterized in that rotary packed bed (5) are adverse current type, cavity axial height (h
2) be packing layer axial height (h
1) 1/4 ~ 1/3, cavity outer wall vertical partial-length (h
3) be cavity axial height (h
2) 0 ~ 1 times, cavity bottom channelization angle (α)=0 ~ 90 °.
4. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 2 is characterized in that rotary packed bed (5) are cross flow type, cavity axial height (h
2) be packing layer axial height (h
1) 1/5 ~ 1/4, cavity outer wall vertical partial-length (h
3) be cavity axial height (h
2) 0 ~ 1 times, cavity bottom channelization angle (α)=0 ~ 90 °.
5. according to claim 1 or 2 or the 3 or 4 described devices that remove low-concentration sulfur dioxide in the flue gas, it is characterized in that desorption system comprises desorb reactor (15), the desorb reactor is rotary packed bed structure, desorb liquid reactor import (22) is through plate type heat exchanger (14), circulating pump I (2) and absorption liquid storage tank (1) link to each other with rotary packed bed liquid outlet (5.5), desorb gas reactor import (24) connects the low-pressure steam source, desorb gas reactor outlet (23) is connected with condenser (16), the liquid outlet of condenser links to each other with absorption liquid storage tank (1), and desorb liquid reactor outlet (21) links to each other with rotary packed bed liquid-inlet (5.1) through circulating pump II (13) and plate type heat exchanger (14).
6. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 5 is characterized in that desorb reactor (15) is a tower.
7. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 5 is characterized in that rotary packed bed gas feed (5.3) connects the surge tank (6) that contains sulfur dioxide flue gas, and surge tank (6) links to each other with the flue gas source that contains sulfur dioxide.
8. the device that removes low-concentration sulfur dioxide in the flue gas according to claim 5, it is characterized in that rotary packed bed gas feed (5.3), rotary packed bed gas vent (5.2) are provided with the gas sampling point respectively, absorption liquid storage tank (1) is provided with the liquid sample point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020636254XU CN201871322U (en) | 2010-12-01 | 2010-12-01 | Device for removing low-concentration sulfur dioxide in flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020636254XU CN201871322U (en) | 2010-12-01 | 2010-12-01 | Device for removing low-concentration sulfur dioxide in flue gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641647A (en) * | 2012-04-13 | 2012-08-22 | 金川集团有限公司 | Recovery processing method for low-concentration stray smoke S02 |
| CN102658000A (en) * | 2012-05-03 | 2012-09-12 | 中国药科大学 | Method and absorption solvent for removing sulfur dioxide from flue gas |
| CN113072984A (en) * | 2021-04-21 | 2021-07-06 | 济南冶金化工设备有限公司 | Coke oven gas hypergravity sweetener rotor and equipment |
| CN114588761A (en) * | 2020-12-03 | 2022-06-07 | 中国石油天然气股份有限公司 | Device and method for absorbing sulfur trioxide in sulfonated tail gas |
-
2010
- 2010-12-01 CN CN201020636254XU patent/CN201871322U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641647A (en) * | 2012-04-13 | 2012-08-22 | 金川集团有限公司 | Recovery processing method for low-concentration stray smoke S02 |
| CN102658000A (en) * | 2012-05-03 | 2012-09-12 | 中国药科大学 | Method and absorption solvent for removing sulfur dioxide from flue gas |
| CN114588761A (en) * | 2020-12-03 | 2022-06-07 | 中国石油天然气股份有限公司 | Device and method for absorbing sulfur trioxide in sulfonated tail gas |
| CN113072984A (en) * | 2021-04-21 | 2021-07-06 | 济南冶金化工设备有限公司 | Coke oven gas hypergravity sweetener rotor and equipment |
| CN113072984B (en) * | 2021-04-21 | 2021-09-10 | 济南冶金化工设备有限公司 | Coke oven gas hypergravity sweetener rotor and equipment |
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Granted publication date: 20110622 Termination date: 20131201 |