CN102583258B - Method for preparing sulfur dioxide gas - Google Patents
Method for preparing sulfur dioxide gas Download PDFInfo
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- CN102583258B CN102583258B CN 201210026306 CN201210026306A CN102583258B CN 102583258 B CN102583258 B CN 102583258B CN 201210026306 CN201210026306 CN 201210026306 CN 201210026306 A CN201210026306 A CN 201210026306A CN 102583258 B CN102583258 B CN 102583258B
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Abstract
The invention relates to a method for preparing novel sulfur dioxide (SO2) gas. The method comprises the steps of (1) melting sulfur: adding industrial sulfur into a sulfur melting tank disposed on a side wall of a sulfur burner so that the solid sulfur is melted into molten sulfur; (2) gasifying: heating the molten sulfur to obtain sublimed sulfur; (3) burning: leading the sublimed sulfur to thesulfur burner, and mixing and burning the mixture of the sublimed sulfur and air to obtain high temperature SO2 gas; (4) subjecting to a first grade cooling and a second burning: leading the SO2 gas into a first heat exchanger and cooling the SO2 gas with a hot-water circulation cooling process, adding air to perform the second burning after the SO2 gas is cooled to a temperature between 400 DEG C and 450 DEG C, and then cooling the SO2 gas again; and (5) subjecting to a second grade cooling: cooling the SO2 gas after the SO2 gas is led into a injection cycle washing cooler. According to the method, hot water serves as a cooling medium of the first heat exchanger, so that long term corrosion resistance is achieved, the service life of the device is prolonged, generation of sulfur trioxide(SO3) is effectively controlled, device corrosion is effectively prevented and the production cost is saved.
Description
Technical field
The present invention relates to a kind of production method of novel sulfur dioxide gas.
Background technology
Need to use SO in the sugaring process
2Gas is as a kind of subsidiary material, and mainly in clarifying process, SO2 and milk of lime reaction generate CaSO
3Precipitation, is removed impurity in the syrup, colloid, pigment and syrup is clarified at absorption, in addition, and SO
2Gas also can play and weaken or the effect of variable color when suppressing in the sugared process generation of new pigment and reducing white sugar to deposit.In addition, in the bleaching process of papermaking, weaving, food etc., also need to use SO
2Therefore, high-quality SO
2In the industrial production in a plurality of fields, play very important effect.
Existing production SO
2The method and apparatus of gas exists sulfur burning unstable more, produces SO
2Of poor quality; There are a large amount of sublimed sulphurs in incomplete combustion, and to the subsequent handling blocking pipe, degradation manipulation environment also causes the waste of sulphur; Air capacity is excessive during burning, causes SO
3Growing amount increases, and causes the furnace gas acid mist large, and is large to the quality influence of treated substance.And because the material condition of equipment when using limit (carbon steel equipment), cause equipment corrosion serious, and service life of equipment is short, and cost is high, causes a maintenance in a year, the passive situation of replacing in 3 years.
Present patent application applicant has applied for " a kind of production method of sulfur dioxide gas " in 2011, the method solved to a certain extent sulfur burning not exclusively, SO
3Generate and wet SO
2The Anticorrosion of furnace gas cooling, but this method, having used heat-eliminating medium is the molten sulphur of air and U-shaped heating jacket, the problem such as have that equipment is slightly many and some is complicated and cooling performance is poor.The applicant of patent application of the present invention has invented again a kind of production method of novel sulfur dioxide gas of better effects if in practice process.
Summary of the invention
The technical problem to be solved in the present invention is: the production method that a kind of novel sulfur dioxide gas is provided, the heat that the method produces when taking full advantage of sulfur furnace burning sulphur, the melting liquefy sulphur and the liquid-state sulfur that are used for solid sulfur become sublimed sulphur, dwindle the combustion Sulfur capacity of sulfur furnace, saved production cost; Adopt simultaneously hot water as the heat-eliminating medium of First Heat Exchanger, can prevent the corrosion of the first hot device, effectively prolonged the work-ing life of equipment; Also adopt secondary to mend the wind burning, make sulfur burning complete, effectively controlled SO
3The generation phenomenon.
The technical scheme that addresses the above problem is: a kind of production method of novel sulfur dioxide gas, and the method may further comprise the steps:
(1) molten sulphur: industrial solid sulfur is added in the sulfur melting groove, described sulfur melting groove is arranged on the cell body on the sulfur furnace sidewall, the sulfur melting groove bottom face is 1～1.5 meter with respect to the height of sulfur furnace bottom face, sulfur melting groove is by burn in the sulfur furnace heat indirect heating that produces and make the sulfur melting in the sulfur melting groove become Molten sulphur of sulphur, and the temperature of Molten sulphur is controlled at 120～150 ℃;
(2) gasification: the liquid-state sulfur in the sulfur melting groove is imported in the molten sulfur gasification tank of sealing, heating molten sulfur gasification tank also makes molten sulfur gasification tank temperature increase to 800-900 ℃, makes liquid-state sulfur be transformed into sublimed sulphur;
(3) burning: the bottom that the sublimed sulphur of deriving from the molten sulfur gasification tank passes into airtight sulfur furnace is provided with in the air inlet short tube, generate high temperature sulfur dioxide gas with the air mixed burning again, the sulfur furnace top is provided with drum, the drum top is provided with external water import, steam outlet and safety valve, the sulfur furnace inwall except with position that sulfur melting groove is connected be equipped with water jacket, water is introduced in the drum, passes into water jacket cooling sulfur furnace inwall again;
(4) first step cooling and secondary are mended the wind burning: sulfur dioxide gas enters First Heat Exchanger from the sulfur furnace derivation and cools off, First Heat Exchanger adopts the circulating hot water cooling, being about to hot water in the sulfur furnace water jacket enters First Heat Exchanger by hot water circulating pump and carries out heat exchange, the plenum chamber that the interchanger bottom is provided with is managed with blower fan and is connected, when the sulfur dioxide gas cooling reaches 400-450 ℃, at First Heat Exchanger bottom plenum chamber, additional air carries out secondary combustion, after burning generates sulfur dioxide gas, sulfur dioxide gas continues to cool off by the backhaul of First Heat Exchanger, and cooling temperature reaches the heat exchange of finishing the first hot device after 120-300 ℃; The described First Heat Exchanger cooling of entering of deriving from the sulfur furnace water jacket is more than 100 ℃ with the initial temperature of hot water; Hot water after the First Heat Exchanger heat exchange finishes imports in the drum 7 at sulfur furnace top again;
(5) second stage cooling: sulfur dioxide gas is derived from First Heat Exchanger, enters the second interchanger and carries out the secondary cooling, sulfur dioxide gas is further lowered the temperature reach 60-70 ℃; Described the second interchanger is spraying cycle scrubber cooler or indirect heat exchanger or spraying cycle scrubber cooler and electrostatic precipitator combination.
Further technical scheme of the present invention is: described First Heat Exchanger mainly is comprised of heat exchanging part I and heat exchanging part II, heat exchanging part I and heat exchanging part II top separate by dividing plate, heat exchanging part I and heat exchanging part II bottom interconnect the formation plenum chamber, described First Heat Exchanger is provided with top chuck and bottom chuck, the described circulating cooling that derives from the sulfur furnace water jacket is introduced in the bottom chuck of First Heat Exchanger with hot water, and then enter heat exchanging part I and heat exchanging part II, heat exchanging part I and heat exchanging part II are tubular heat exchange, tube side leads to sulfur dioxide gas, and shell side leads to circulating cooling hot water; Shell side hot water enters in the top chuck of First Heat Exchanger again, imports the drum at sulfur furnace top from the top chuck at last; Described sulfur dioxide gas is from being introduced into the heat exchanging part I cooling of First Heat Exchanger after sulfur furnace is derived, temperature reaches 400-450 ℃ during to plenum chamber, then replenish air at First Heat Exchanger bottom plenum chamber and carry out secondary combustion, the rear sulfur dioxide gas that burnt continues to be cooled to 120-300 ℃ by entering heat exchanging part II heat exchange to temperature.
Used sulfur furnace is vertical sulfur furnace in the step (three), and the sulfur furnace bottom position is connected with described air inlet short tube, is connected with gas pipe, portfire and described molten sulfur gasification tank on the air inlet short tube, and air inlet short tube and blower fan carry out Guan Lian; Described molten sulfur gasification tank comprises the gasification tank cylindrical shell, bottom, the sublimed sulphur escape pipe, molten sulfur inlet pipe and the flange plate that is connected with gasification tank cylindrical shell top, the molten sulfur inlet pipe is connected on the flange plate and passes in the gasification tank cylindrical shell, described sublimed sulphur escape pipe places in the gasification tank cylindrical shell, sublimed sulphur escape pipe one end passes outside the gasification tank cylindrical shell, the sublimed sulphur escape pipe the other end passes flange plate and is communicated in the gasification tank cylindrical shell, described bottom is by under push rod top tight sealing and the gasification tank cylindrical shell, push rod one end and bottom socket, the push rod the other end is fixed on the tube wall of air inlet short tube below by nut.
Described molten sulfur gasification tank also includes the scavenging duct for dust in the cleaning gasification tank cylindrical shell, the gas purging pipe passes flange plate and extends in the gasification tank cylindrical shell, described push rod upper end is by end cap seal, is fixed under the air inlet short tube push rod on the tube wall and nut is outer seals by enclosing cover.
Described sulfur furnace top has furnace gas export, the hot water outlet that the bottom has ash removing hole and is communicated with water jacket, and the water jacket top is communicated with the drum bottom by pipeline.
Described the second water cooler is the spraying cycle scrubber cooler, spraying cycle scrubber cooler below is connected with circulation groove, water coolant in the circulation groove imports in the spraying cycle scrubber cooler by acidproof recycle pump and recycles, and also is connected with gas outlet tube on the circulation groove.
Described sulfur melting groove bottom face is arranged with electric heater.
Because adopt such scheme, the production method of novel sulfur dioxide gas of the present invention has following beneficial effect:
1. adopt hot water as the heat-eliminating medium of First Heat Exchanger, can be anticorrosion, effectively prolonged the work-ing life of equipment, also can pay producing steam and be used for the concentrated of syrup.
The used interchanger of existing sulfurous gas generating apparatus all adopts cold water as heat-eliminating medium, and this will cross cold and dewfall phenomenon, the SO of generation occur at the tube wall of interchanger
3Can dissolve in formation dilute sulphuric acid in the dewfall, dilute sulphuric acid is serious to carbon steel equipment corrosion.Will being corroded less than the tube wall of two months interchanger, to wear be exactly this reason, therefore can not adopt cold water as heat-eliminating medium.And First Heat Exchanger of the present invention adopts hot water more than 100 ℃ as heat transferring medium, so equipment of the present invention can be anticorrosion, and long service life, minimum can the use more than 10 years, but life-time service in theory need not keep in repair and change.Become steam behind the heat in the hot water sulfur dioxide absorption gas of First Heat Exchanger cooling usefulness, the steam that can reclaim this part is used for the concentrated of liquid glucose.
2. adopt secondary to add the wind burning, sulfur burning is complete, has effectively controlled SO
3Generate.
Sulphur burns when having air to add at a certain temperature, will produce sulfur dioxide gas, if oxygen is many again, under the condition of suitable at temperature condition for catalyzer (Fe2O3) existence, also can oxidation become SO
3SO
3All can form acid mist such as water or damp atmosphere, acid mist is difficult to remove, and one pollutes the environment, and two can make syrup sulfur acid calcium, affects the quality (solubleness of terra alba is higher than the solubleness of calcium sulfite, and causing white sugar bitter is exactly this reason) of white sugar.When the present invention reaches 400-450 ℃ with the cooling of a small amount of oxygen burning generation sulfurous gas (oxygen debt burning) gas temperature first, replenish again a part of secondary air and burn, sulphur can be burnt fully, also can not react again generation SO
3Although because in furnace gas, there is oxygen to exist, catalyzer (Fe is arranged also
2O
3) exist, but temperature generates SO 500 ℃ of ability reactions
3Therefore, in First Heat Exchanger, when temperature is cooled to 400-450 ℃, replenish air and carry out secondary combustion, generate SO
2, just can not regeneration SO
3, the burning of both having controlled sulphur is complete, has also controlled SO
3Generation, not only avoided contaminate environment, guaranteed simultaneously white sugar quality.
3. the present invention's sulfur furnace is without liner, and there is water jacket heat exchange protection on the surface that all contacts with furnace gas, has both increased heat-transfer surface, has also saved production cost.
The present invention without liner, but is provided with water jacket protection at inwall at the sulfur furnace inwall, and logical hot water as heat-transfer surface, is cooled off high-temperature furnace gas and heat exchange with the furnace wall in the water jacket, and protection equipment is not burned.The sulfur furnace sidewall that is connected with sulfur melting groove does not in addition arrange water jacket, takes full advantage of high temperature SO
2The heat of gas becomes Molten sulphur in order to molten solids sulphur, the convenient conveying and metering.Lower union joint had both increased heat-transfer surface all with the jacketed type protection on the First Heat Exchanger in addition, had also saved production cost.
4. the sulfur dioxide gas that adopts the present invention to make, applied range.
The sulfur dioxide gas that adopts the present invention to prepare, quality is high, can as auxiliary material important in the sugaring process, namely be used for bleaching, supernatant and the removal of impurities of liquid glucose; Also can be used for the bleaching of papermaking, weaving, food, medicine, also can be used as the reductive agent of making manganous sulfate, also the SO of available this invention manufacturing
2Gas is made sulfuric acid, such as the roasting of sulfur waste sulphur and purification etc.
Below, be further described with the technical characterictic of example to the production method of a kind of novel sulfur dioxide gas of the present invention by reference to the accompanying drawings.
Description of drawings
Fig. 1: the production method equipment therefor structural representation of a kind of novel sulfur dioxide gas of the present invention.
Fig. 2: the enlarged view of molten sulfur gasification tank among Fig. 1.
Fig. 3: sulfur melting tank structure schematic diagram.
Among the figure: 1-blower fan, 2-under meter, 3-air inlet short tube, 31-gas pipe, the 32-portfire, 4-molten sulfur gasification tank, 41-bottom, 42-sublimed sulphur escape pipe, 43-gasification tank cylindrical shell, 44-flange plate, 45-molten sulfur inlet pipe, 46-gas purging pipe, the 47-end cap, 48-push rod, 49-enclosing cover, the 5-sulfur melting groove, 51-electric heater, 6-sulfur furnace, the 61-furnace gas export, 62-water jacket, 63-ash removing hole, the 64-hot water outlet, 7-drum, 71-steam outlet, the 72-safety valve, the import of 73-external water, 74-hot water return mouth, the 8-First Heat Exchanger, 81-heat exchanging part I, 82-heat exchanging part II, the import of 83-furnace gas, 84-top chuck, 85-dividing plate, 86-cools off furnace gas export, 87-gas inlet, 88-bottom chuck, the 89-plenum chamber, 810-cooling hot water inlet, 9-jet cleaning water cooler, the 10-gas outlet tube, 11-circulation groove, the import of 111-make up water, the outlet of 112-sewer, 12-cyclic acid pump, 13-hot water circulating pump.
Embodiment
A kind of production method of novel sulfur dioxide gas, such as Fig. 1-shown in Figure 2, the method is first the solid sulphur heating and melting to be become liquid-state sulfur, liquid-state sulfur is metered in the molten sulfur gasification tank again, make the liquid-state sulfur gasification be transformed into sublimed sulphur, after the burning of sublimed sulphur and air mixed is produced sulfur dioxide gas, said method comprising the steps of:
(1) molten sulphur: industrial solid sulfur is added in the sulfur melting groove 5, described sulfur melting groove is arranged on the square cell body on sulfur furnace 6 sidewalls, the sulfur melting groove bottom face is 1～1.5 meter with respect to the height of sulfur furnace bottom face, the heat indirect heating sulphur that sulfur melting groove 5 burns in sulfur furnace and produces by sulphur, make sulfur melting become Molten sulphur (before the driving, with the electric heater 51 heating sulfur melting groove melting sulphur that are arranged on the sulfur melting groove bottom), the temperature of Molten sulphur is controlled between 120～150 ℃.
(2) gasification: the liquid-state sulfur in the sulfur melting groove 5 is imported in the molten sulfur gasification tank 4 that seals by high-order, burning by sublimed sulphur produces heat with heating molten sulfur gasification tank and makes molten sulfur gasification tank temperature increase arrive 800-900 ℃ (before the driving, pass into coal gas by gas pipe 31, by 32 coal gas of portfire with heating molten sulfur gasification tank and heating cycle water coolant), make liquid sulfur be transformed into sublimed sulphur;
(3) burning: the sublimed sulphur of deriving from molten sulfur gasification tank side passes into the air inlet short tube 3 of airtight sulfur furnace 6, generate high temperature sulfur dioxide gas with the air mixed burning again, high temperature sulfur dioxide gas returns and heats molten sulfur gasification tank (can stop the ventilating coal gas heating this moment), the small part heat is absorbed by Molten sulphur and changes into sublimed sulphur, sublimed sulphur out burns with air mixed more from the side, and heat loops like this.High temperature SO
2Gas conducts heat in the mode of indirect heating and the part heat is passed to solid sulfur in the sulfur melting groove, makes the sulphur melted by heating, becomes Molten sulphur (can close electric heater this moment).The sulfur furnace top is provided with drum 7, the drum top is provided with external water import 73, steam outlet 71 and safety valve 72, safety valve is used for regulating the pressure of drum, the sulfur furnace inwall (except with position that sulfur melting groove is connected) be equipped with water jacket 62, with circulating hot water cooling sulfur furnace inwall, water is introduced in the drum 7, pass into again water jacket 62 cooling sulfur furnace inwalls, guarantee that the furnace wall is not burned, water is heated, and has guaranteed the trouble-free burning of sulphur in sulfur furnace.Sulfur furnace top is provided with drum, both can make top cover and conduct heat, and seals sulfur furnace air tight, also can make to add the knot point that water, cycling hot evaporation of water, producing steam efflux; Sulfur furnace is provided with the water jacket cooling; without liner; conduct heat with circulating hot water; the circulating hot water temperature is improved; heat is passed to drum and discharge by circulation, both guaranteed that gas is cooled off, guarantee that also equipment inner wall is not destroyed by high temperature simultaneously; guarantee that equipment surface is not subjected to low temperature effect to make the gas dewfall and etching apparatus, protection equipment is not burned yet.During the melting of sulphur, therefrom dig every the installation weld of a chuck as sulfur melting groove, with the heat indirect heating melting sulphur of high-temperature furnace gas; The burning of sulphur has increased the temperature of molten sulfur gasification tank, makes the combustion processes of sulphur be: solid sulfur, and---Molten sulphur---sublimed sulphur---and four steps of air mixed burning have prolonged the residence time, make burning more complete.
(4) first step cooling and secondary supplement burning: the sulfur dioxide gas that generates under the anaerobic environment is entered First Heat Exchanger 8 from sulfur furnace 6 derivation cool off, First Heat Exchanger adopts circulating hot water cooling (therefore being called hot heat exchanger or forced circulation type waste heat boiler), hot water is first by behind the sulfur furnace cooled furnace wall, enter First Heat Exchanger by hot water circulating pump 13 again and carry out heat exchange, the plenum chamber that the interchanger bottom is provided with is managed with blower fan 1 and is connected, when the sulfur dioxide gas cooling reaches 400-450 ℃, at First Heat Exchanger 8 bottom plenum chambers, replenish the part air and carry out secondary combustion, with the complete sublimed sulphur that burns, after burning becomes sulfur dioxide gas, sulfur dioxide gas continues to cool off by the backhaul of First Heat Exchanger, and cooling temperature reaches the heat exchange of finishing the first hot device after 120-300 ℃; Cooling is the hot water of deriving from the water jacket 62 of sulfur furnace with hot water in the First Heat Exchanger, and the described temperature that First Heat Exchanger cools off with hot water that enters that derives from the sulfur furnace chuck is at least more than 100 ℃; Hot water after heat exchange finishes imports in the drum 7 at sulfur furnace top again, forms a circulation; In vapour, wrap, superheated water will become steam and constantly discharge, the hot water recirculation of remaining unvaporized hot water and adding is with cooled furnace wall, cooling is controlled the size that relies on the drum internal pressure with the temperature of hot water and is decided, general cooling is 100-150 ℃ with the temperature of hot water, and tube wall just can dewfall like this.
(5) second stage cooling: sulfur dioxide gas enters the second interchanger and cools off after deriving from First Heat Exchanger, makes the cooling of sulfur dioxide gas temperature reach 60-70 ℃; Described the second heat exchanger will be used energy rot-resistant interchanger, the second heat exchanger adopts direct spraying cycle scrubber cooler 9, just in time meet this requirement, the spraying cycle scrubber cooler cools off sulfur dioxide gas on the one hand, by the spraying cycle washing, the washing of the impurity in the sulfur dioxide gas can also be removed on the other hand.A small amount of water evaporation is arranged in the furnace gas and furnace gas is cooled off.Spraying cycle scrubber cooler below is connected with circulation groove 11, and the water in the circulation groove is transported in the spraying cycle scrubber cooler by cyclic acid pump 12, with circulation cleaning cooling furnace gas.Also be connected with gas outlet tube 10 on the circulation groove, sulfur dioxide gas behind the wash cooling sent the Jet absorber that enters the user from gas outlet tube used.
Described First Heat Exchanger mainly is comprised of heat exchanging part I 81 and heat exchanging part II 82, heat exchanging part I and heat exchanging part II top separate by dividing plate 85, heat exchanging part I and heat exchanging part II bottom interconnect and form plenum chamber 89, described First Heat Exchanger is provided with top chuck 84 and bottom chuck 88, the described circulating cooling that derives from sulfur furnace water jacket 62 is introduced in the bottom chuck 88 of First Heat Exchanger with hot water, and then enter heat exchanging part I 81 and heat exchanging part II 82, heat exchanging part I 81 and heat exchanging part II 82 are tubular heat exchange, tube side leads to furnace gas, and shell side leads to circulating cooling hot water; Shell side hot water enters in the top chuck 84 of First Heat Exchanger again, imports the drum 7 at sulfur furnace top from the top chuck at last; After deriving from sulfur furnace 6 top sides, described sulfur dioxide gas is introduced into heat exchanging part I 81 coolings of First Heat Exchanger, temperature reaches 400-450 ℃ during to plenum chamber 89, then replenish air at First Heat Exchanger 8 bottom plenum chambers 89 and carry out secondary combustion, the rear sulfur dioxide gas that burnt continues to be cooled to 120-300 ℃ by entering heat exchanging part II 82 heat exchange to temperature.
Described sulfur furnace 6 tops have furnace gas export 61, the hot water outlet 64 that the bottom has ash removing hole 63 and is communicated with water jacket, and water jacket 62 tops are communicated with the drum bottom by pipeline.Be communicated with hot water circulating pump 13 by pipeline between the cooling of the described First Heat Exchanger hot water outlet with hot water inlet 810 and sulfur furnace.
In the sugaring process, a lot of operations can produce a large amount of hot water.When beginning to produce, can add in the drum 7 and make cooling circulating water concentrating water of condensation that the condensation of syrup institute gets off, then hot water passes in the circulation of the water jacket 62 of sulfur furnace and First Heat Exchanger and heats.Solid sulfur is by the electrically heated melting before driving, and sulfur furnace is with coal gas or oil inflame heating, reaches to add Molten sulphur after the temperature of Molten sulphur burning and burn and form a benign cycle.
It is anticorrosion that described jet cleaning water cooler top can determine whether that needs liner acid-proof ceramics comes according to practical situation.The structure of boiler barrel that uses in described structure of boiler barrel and the existing boiler is identical.
Replenish as a kind of of the present embodiment, if the temperature in the sulfur melting groove 5 does not reach when requiring, can increase molten sulphur heat transfer area, can increase like this area of sulfur melting groove sidewall and the melting area of sulphur.
As the another kind of form of the present embodiment, described the second interchanger can also adopt the combination of dry type indirect heat exchanger or spraying cycle scrubber cooler+electrostatic precipitator.During such as usefulness dry type indirect heat exchanger mode, interchanger can be graphite heat exchanger, also can be the interchanger of inner liner polytetrafluoroethylene material; During the combination of spraying cycle scrubber cooler+electrostatic precipitator, mainly consider to have SO
3Form when acid mist generates makes resulting sulfurous gas cleaner, in order to the application of rear operation, and the furnace gas better quality of processing like this.
In order to conduct heat, complete assembly is made with carbon steel, do not need liner, sulfur furnace, hot water circulating pump, hot heat exchanger and drum form a heat exchange refrigeration cycle, with the medium of hot water as the circulating cooling furnace gas, purpose is with after the hot water circulation cooling, has improved the pipe surface temperature of equipment and heat transfer tube, prevents that furnace gas from corroding pipe at the condensation and dewfall of tube wall; The second interchanger can be used the indirect type of cooling; Also can process furnace gas with the technique that direct-cooled spraying cycle scrubber cooler or spraying cycle scrubber cooler add electrostatic precipitator.The type of cooling will be used corrosion-proof heat exchanger indirectly; During with the straight cooling type heat exchange, injector and circulation groove must be with the acid-proof ceramics inside lining anti-corrosives.Use which kind of mode, this will decide according to user's requirement.
This invention result of use is good, and the manufacturing that needs is also simple, and the factory that generally has rivet welding technical ability can both make, and can entrust machining factory to manufacture complete equipment and use, and also can oneself make and use, and reduces expenses.
The present invention sums up and overcome the problem that the applicant exists in the invention of application in 2011.The method of using is equivalent to roasting and a cleaning section that is embedded with production of sulfur from pyrite acid, just there is not in process of production slag to discharge, First Heat Exchanger is equivalent to a boiler, can produce low-pressure steam, so with the above hot water circulation cooling furnace gas of 100 degree, both producing steams can etching apparatus yet.The second circulation cleaning water cooler is equivalent to a Tai Wenqiuli washer, the liner acid-proof ceramics, and the direct circulation cooled is adopted in second stage cooling, in the furnace gas evaporation of water is arranged and makes SO
2Furnace gas cools off rapidly, under certain temperature condition, and the SO that recirculated water dissolves
2Be constant, also just can not lose, cooling performance also just in time at 70 ~ 80 degree, meets the service requirements of subsequent handling, and equipment is both simple, and is cheap again, also can not produce the corrosion to equipment, and it is concentrated that cooling institute producing steam can be used for liquid glucose, and heat can take full advantage of.When driving, device first with electrically heated sulphur, make it become Molten sulphur, so that carry and metering.With heated by gas molten sulfur gasification tank and equipment inner wall, make the molten sulfur gasifier can evaporate sulphur and become sublimed sulphur simultaneously, equipment inner wall is heated, so that equipment is not corroded, is more satisfactory manufacturing SO
2Generating apparatus.
Claims (7)
1. the production method of a sulfur dioxide gas, it is characterized in that: the method may further comprise the steps:
(1) molten sulphur: industrial solid sulfur is added in the sulfur melting groove (5), described sulfur melting groove is arranged on the cell body on sulfur furnace (6) sidewall, the sulfur melting groove bottom face is 1～1.5 meter with respect to the height of sulfur furnace bottom face, sulfur melting groove (5) is by burn in the sulfur furnace heat indirect heating that produces and make the sulfur melting in the sulfur melting groove become Molten sulphur of sulphur, and the temperature of Molten sulphur is controlled at 120～150 ℃;
(2) gasification: the liquid-state sulfur in the sulfur melting groove (5) is imported in the molten sulfur gasification tank (4) of sealing, heating molten sulfur gasification tank also makes molten sulfur gasification tank temperature increase to 800-900 ℃, makes liquid-state sulfur be transformed into sublimed sulphur;
(3) burning: the bottom that the sublimed sulphur of deriving from the molten sulfur gasification tank passes into airtight sulfur furnace (6) is provided with in the air inlet short tube (3), generate high temperature sulfur dioxide gas with the air mixed burning again, the sulfur furnace top is provided with drum (7), the drum top is provided with external water import (73), steam outlet (71) and safety valve (72), the sulfur furnace inwall except with position that sulfur melting groove is connected be equipped with water jacket (62), water is introduced in the drum (7), passes into water jacket (62) cooling sulfur furnace inwall again;
(4) first step cooling and secondary are mended the wind burning: sulfur dioxide gas enters First Heat Exchanger (8) from sulfur furnace (6) derivation and cools off, First Heat Exchanger adopts the circulating hot water cooling, being about to hot water in the sulfur furnace water jacket (62) enters First Heat Exchanger by hot water circulating pump (13) and carries out heat exchange, the plenum chamber (89) that the interchanger bottom is provided with is managed with blower fan (1) and is connected, when the sulfur dioxide gas cooling reaches 400-450 ℃, at First Heat Exchanger (8) bottom plenum chamber, additional air carries out secondary combustion, after burning generates sulfur dioxide gas, sulfur dioxide gas continues to cool off by the backhaul of First Heat Exchanger, and cooling temperature reaches the heat exchange of finishing the first hot device after 120-300 ℃; The described First Heat Exchanger cooling of entering of deriving from the sulfur furnace water jacket is more than 100 ℃ with the initial temperature of hot water; Hot water after the First Heat Exchanger heat exchange finishes imports in the drum (7) at sulfur furnace top again;
(5) second stage cooling: sulfur dioxide gas is derived from First Heat Exchanger, enters the second interchanger and carries out the secondary cooling, sulfur dioxide gas is further lowered the temperature reach 60-70 ℃; Described the second interchanger is spraying cycle scrubber cooler or indirect heat exchanger or spraying cycle scrubber cooler and electrostatic precipitator combination.
2. the production method of a kind of sulfur dioxide gas according to claim 1, it is characterized in that: described First Heat Exchanger mainly is comprised of heat exchanging part I (81) and heat exchanging part II (82), heat exchanging part I and heat exchanging part II top separate by dividing plate (85), heat exchanging part I and heat exchanging part II bottom interconnect and form plenum chamber (89), described First Heat Exchanger is provided with top chuck (84) and bottom chuck (88), the described circulating cooling that derives from sulfur furnace water jacket (62) is introduced in the bottom chuck (88) of First Heat Exchanger with hot water, and then enter heat exchanging part I (81) and heat exchanging part II (82), heat exchanging part I (81) and heat exchanging part II (82) are tubular heat exchange, tube side leads to sulfur dioxide gas, and shell side leads to circulating cooling hot water; Shell side hot water enters in the top chuck (84) of First Heat Exchanger again, imports the drum (7) at sulfur furnace top from the top chuck at last; Described sulfur dioxide gas is from being introduced into heat exchanging part I (81) cooling of First Heat Exchanger after sulfur furnace (6) is derived, temperature reaches 400-450 ℃ during to plenum chamber (89), then replenish air at First Heat Exchanger (8) bottom plenum chamber (89) and carry out secondary combustion, the rear sulfur dioxide gas that burnt continues to be cooled to 120-300 ℃ by entering heat exchanging part II (82) heat exchange to temperature.
3. the production method of a kind of sulfur dioxide gas according to claim 1 and 2, it is characterized in that: used sulfur furnace (6) is vertical sulfur furnace in the step (three), the sulfur furnace bottom position is connected with described air inlet short tube (3), be connected with gas pipe (31), portfire (32) and described molten sulfur gasification tank (4) on the air inlet short tube, air inlet short tube (3) carries out Guan Lian with blower fan (1); Described molten sulfur gasification tank (4) comprises gasification tank cylindrical shell (43), bottom (41), sublimed sulphur escape pipe (42), molten sulfur inlet pipe (45) and the flange plate (44) that is connected with gasification tank cylindrical shell top, molten sulfur inlet pipe (45) is connected to flange plate (44) upward and passes in the gasification tank cylindrical shell (43), described sublimed sulphur escape pipe (42) places in the gasification tank cylindrical shell, sublimed sulphur escape pipe one end passes outside the gasification tank cylindrical shell (43), the sublimed sulphur escape pipe the other end passes flange plate (44) and is communicated in the gasification tank cylindrical shell, described bottom (41) is by under push rod (48) top tight sealing and the gasification tank cylindrical shell (43), push rod (48) one ends and bottom (41) socket, the push rod the other end is fixed on the tube wall of air inlet short tube (3) below by nut.
4. the production method of a kind of sulfur dioxide gas according to claim 3, it is characterized in that: described molten sulfur gasification tank (4) also includes the scavenging duct (46) for dust in the cleaning gasification tank cylindrical shell, the gas purging pipe passes flange plate and extends in the gasification tank cylindrical shell, described push rod (48) upper end is by end cap (47) sealing, is fixed under the air inlet short tube push rod on the tube wall and nut outward by enclosing cover (49) sealing.
5. the production method of a kind of sulfur dioxide gas according to claim 1 and 2, it is characterized in that: described sulfur furnace (6) top has furnace gas export (61), the hot water outlet (64) that the bottom has ash removing hole (63) and is communicated with water jacket, water jacket (62) top is communicated with the drum bottom by pipeline.
6. the production method of a kind of sulfur dioxide gas according to claim 1 and 2, it is characterized in that: described the second water cooler is spraying cycle scrubber cooler (9), spraying cycle scrubber cooler below is connected with circulation groove (11), water coolant in the circulation groove imports in the spraying cycle scrubber cooler by acidproof recycle pump (12) and recycles, and also is connected with gas outlet tube (10) on the circulation groove.
7. the production method of a kind of sulfur dioxide gas according to claim 1 and 2, it is characterized in that: described sulfur melting groove (5) bottom face is arranged with electric heater (51).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102813272A (en) * | 2012-09-11 | 2012-12-12 | 天津中局科技发展有限公司 | Raw milk quick-cooling device |
| CN103112832A (en) * | 2013-03-15 | 2013-05-22 | 黄永春 | Production method and production device of sulfur dioxide gas for sugar making process |
| CN105036087A (en) * | 2015-06-30 | 2015-11-11 | 广西农垦糖业集团红河制糖有限公司 | Sulfur burning apparatus |
| CN105129747A (en) * | 2015-07-03 | 2015-12-09 | 柳州市亿瑞物资有限责任公司 | Sulfuric acid production technology |
| CN107777671A (en) * | 2016-08-29 | 2018-03-09 | 李春鑫 | A kind of bromine production sulfur furnace |
| CN107055484A (en) * | 2017-05-25 | 2017-08-18 | 宣城市楷昂化工有限公司 | One kind burns sulphur system |
| CN107827086A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Production device and method of liquid sulfur dioxide |
| CN108362357B (en) * | 2018-04-23 | 2024-02-13 | 江苏省盐海化工有限公司 | Liquid sulfur level measuring device of pure oxygen method sulfur incinerator |
| CN108975282B (en) * | 2018-09-11 | 2023-11-03 | 昌邑市蒲东化工厂 | Sulfur incinerator system for bromine production |
| CN111017957B (en) * | 2019-11-06 | 2022-11-01 | 启东亚太药业有限公司 | Production device for producing ammonium bisulfite by sulfur burning method |
| CN111908430A (en) * | 2020-06-19 | 2020-11-10 | 宁波市化工研究设计院有限公司 | Method for treating solid waste sulfur |
| CN113929062A (en) * | 2021-11-22 | 2022-01-14 | 双盾环境科技有限公司 | SO is prepared by high oxygen combustion sulphur circulative cooling2In a device |
| CN115180597B (en) * | 2022-09-13 | 2022-12-02 | 沧州中铁装备制造材料有限公司 | Sulfur burner with heat cyclic utilization structure |
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| CN102107858A (en) * | 2011-01-15 | 2011-06-29 | 封宗方 | Production method of sulfur dioxide gas |
| CN201990487U (en) * | 2011-01-15 | 2011-09-28 | 封宗方 | Vertical brimstone burner |
| EP2392545A1 (en) * | 2010-06-02 | 2011-12-07 | IFP Energies nouvelles | Method and facility for producing oxygen by a chemical loop in a fluidised bed |
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| EP2392545A1 (en) * | 2010-06-02 | 2011-12-07 | IFP Energies nouvelles | Method and facility for producing oxygen by a chemical loop in a fluidised bed |
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| CN201990487U (en) * | 2011-01-15 | 2011-09-28 | 封宗方 | Vertical brimstone burner |
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