CN213265741U - Sulfurous acid solution preparation system - Google Patents
Sulfurous acid solution preparation system Download PDFInfo
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- CN213265741U CN213265741U CN202021952159.0U CN202021952159U CN213265741U CN 213265741 U CN213265741 U CN 213265741U CN 202021952159 U CN202021952159 U CN 202021952159U CN 213265741 U CN213265741 U CN 213265741U
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Abstract
The utility model relates to a sulfurous acid solution preparation system, which comprises a sulfur melting combustion furnace, absorption tower and water injection vacuum unit, sulphur keeps in jar export and conveyer entry and links to each other, the conveyer export links to each other with the feed inlet that the sulphur melting fires burning furnace, the sulphur dioxide discharge port that the sulphur melting fires burning furnace passes through the sulphur dioxide gas phase pipe and links to each other with the air inlet of one-level absorption tower, the top tail gas mouth of one-level absorption tower passes through the one-level tail gas pipe and links to each other with the air inlet of second grade absorption tower, the acidizing fluid export of one-level absorption tower and second grade absorption tower links to each other with the sulfurous acid solution output tube respectively, the top tail gas mouth of second grade absorption tower passes through the second grade tail gas pipe and links to each other with the air inlet of water injection vacuum unit, the process water export of water injection vacuum unit links to each other with the entry of system acid water pitcher, the. The sulfuric acid solution preparation system has the advantages of less pollutant discharge and high yield of the sulfuric acid solution.
Description
Technical Field
The utility model relates to a sulfurous acid solution preparation system belongs to sulfurous acid preparation technical field.
Background
The corn husk is composed of a semi-permeable membrane, which must be changed into a permeable membrane in order for the soluble substances inside the corn kernels to permeate out. The sulfur dioxide dissolved in water to form sulfurous acid can destroy the protein net of the corn kernels, so that the starch granules wrapped by the protein net are released, thereby being beneficial to separating fibers from proteins. Sulfurous acid also has the effects of inhibiting microorganisms and avoiding the deterioration of the corns in the soaking process.
In the corn starch industry, sulfur is generally directly combusted in a sulfur combustion furnace, sulfur dioxide gas generated by combustion enters an absorption tower, the inside of the absorption tower is filled with pall rings for sulfur dioxide absorption, and the absorbed tail gas is directly discharged into the atmosphere through a centrifugal fan.
The traditional preparation method of the sulfurous acid solution has the following defects:
1. the sulfur is solid and directly burns, and naturally burns in the furnace, so that the combustion amount of the sulfur cannot be controlled; the utilization rate of the sulfur is low, so that the sulfur is not fully combusted; because the solid accumulation is not fully contacted with air or is wrapped by sulfur and heated to be gasified to generate sulfur steam smoke, the environmental pollution is caused.
2. The absorption tower is filled with the filler, so that water forms small drops, the contact area with sulfur dioxide is small, and the absorption rate is low.
3. The absorbed tail gas is directly discharged into the atmosphere through a centrifugal fan, so that the environmental pollution is great.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a sulfurous acid solution preparation system, which has less pollutant discharge and high yield of the sulfurous acid solution.
In order to solve the technical problem, the utility model discloses a sulfurous acid solution preparation system, including the sulphur jar of keeping in, the export of sulphur jar of keeping in links to each other with the entry of conveyer, the export of conveyer links to each other with the sulphur feed inlet that the sulphur melting fires burning furnace, the sulphur dioxide discharge port that the sulphur melting fires burning furnace passes through the sulphur dioxide gas phase pipe and links to each other with the air inlet of primary absorption tower, the top tail gas mouth of primary absorption tower passes through the primary tail gas pipe and links to each other with the air inlet of secondary absorption tower, the acidizing fluid export of primary absorption tower and secondary absorption tower links to each other with the sulfurous acid solution output tube respectively, the top tail gas mouth of secondary absorption tower passes through the secondary tail gas pipe and links to each other with the air inlet of water injection vacuum unit, the technology water export of water injection vacuum unit links to each other with the entry of system acid water, the spraying main pipe is connected with each spraying branch pipe of the primary absorption tower and the secondary absorption tower.
Compared with the prior art, the utility model discloses following beneficial effect has been obtained: after the sulphur granule is kept in the jar discharge from sulphur, send into melting sulphur burning furnace by the conveyer and melt the burning, produce sulfur dioxide, sulfur dioxide passes through the sulfur dioxide gas phase pipe and firstly enters one-level absorption tower and each spray branch spun water smoke contact, generate the sulfurous acid solution, the tail gas of one-level absorption tower passes through one-level tail gas pipe and gets into second grade absorption tower and continue to absorb, the sulfurous acid solution that one-level absorption tower and second grade absorption tower generated all discharges through the sulfurous acid solution output tube. The tail gas of the secondary absorption tower is pumped out by the water injection vacuum unit through the secondary tail gas pipe, the water inlet of the water injection vacuum unit is connected with the process water pipe, the injected process water enters the acid making water tank for collection, then the circulating pump sends the process water to the spraying header pipe, and then the process water enters the spraying branch pipes of the primary absorption tower and the secondary absorption tower for circulating spraying. After the sulfur dioxide is absorbed by two stages, the tail gas is changed from direct evacuation to evacuation after being fully absorbed by a water spraying vacuum unit, the sulfur dioxide content in the discharged tail gas is reduced to 150mg/m through a 300mg/m high-speed thin film strip method, and the pollution to the environment is reduced. In addition, the water spraying vacuum unit sprays the process water of the corn starch production line, and the sprayed process water is used as a water source of spray water, so that the cyclic utilization of the process water is realized, the residual sulfur dioxide is pre-absorbed, the yield of the sulfurous acid solution is improved, the discharge of sewage is reduced, and the economic benefit and the environmental benefit are both high and high.
As an improvement of the present invention, the sulfur melting combustion furnace includes a closed combustion chamber, a furnace cover is arranged at the top of the combustion chamber, a boiler barrel is embedded in the furnace cover, a pot cover for closing the boiler barrel is arranged at the top of the boiler barrel, a sulfur outflow port is arranged at the center of the bottom of the boiler barrel, a valve core is arranged at the sulfur outflow port, a valve rod is hinged at the center of the top of the valve core, the upper thread section of the valve rod is screwed in a thread seat, the thread seat is fixed at the center of the pot cover, and a hand wheel is arranged at the top of the valve rod; the sulfur feed inlet is positioned at one side of the pot cover. After entering the boiler barrel, the sulfur particles are firstly melted into liquid, the liquid sulfur falls into the combustion chamber from the sulfur outflow port at the center of the bottom of the boiler barrel for combustion, the flame and the high-temperature flue gas of the combustion chamber preheat the sulfur particles in the boiler barrel to be melted, and the melted sulfur enters the combustion chamber for combustion, so that the contact area with air is increased, and insufficient combustion is avoided. The valve rod is rotated through the hand wheel, so that the valve core can be lifted, the flow of the liquid sulfur entering the combustion chamber is controlled, the original sulfur combustion amount which cannot be controlled becomes controllable, and the waste caused by insufficient combustion due to excessive sulfur is avoided. The sulfur consumption per ton of starch is reduced to 1.5kg of the system from 2.0kg of the original acid making process.
As a further improvement, be equipped with the last burning dish that the level set up under the boiler barrel, the welding has the upper overflow pipe on going up the bottom plate of burning dish, the top of upper overflow pipe is less than the last port of burning dish, it is equipped with down burning dish to go up under the burning dish. After the upper burning plate is full, the overflow pipe overflows from the upper layer and falls into the lower burning plate, and the two layers of burning plates burn simultaneously, so that the contact area of liquid sulfur and air is increased, and the yield of sulfur dioxide is increased.
As a further improvement of the utility model, the bottom of the left side wall of the combustion chamber is provided with a combustion furnace air inlet, the combustion furnace air inlet is provided with a drawing and inserting air door with adjustable opening, and the position of the combustion furnace air inlet is lower than the lower combustion disc; the sulfur dioxide outlet is positioned at the upper part of the right side wall of the combustion chamber. The air inlet of the combustion furnace is lower than the lower combustion disc, and the sulfur dioxide discharge port is positioned at the upper part of the other side, so that short flow of air is avoided, and oxygen is sufficiently supplied to the two layers of combustion discs.
As a further improvement of the utility model, the bottom of the upper combustion plate is supported on the upper layer furnace frame, the bottom of the lower combustion plate is supported on the lower layer furnace frame, and the upper layer furnace frame and the lower layer furnace frame are respectively welded on the inner wall of the combustion chamber; the left side wall upper portion of combustion chamber inclines right, and is equipped with the combustion disc access hole that supplies combustion disc and lower combustion disc to take out, and two combustion disc access hole departments have covered respectively and have turned over the board door, and the door-hinge of two turning over the board doors is located upper portion respectively. The turnover plate door is upwards rotated, and then the upper combustion plate or the lower combustion plate can be drawn out; the upper part of the left side wall of the combustion chamber inclines rightwards, so that the lower edge of the flap door is naturally attached to the door frame, and the possibility of air leakage is reduced.
As a further improvement of the utility model, the two flap doors are respectively provided with an observation port, each observation port is respectively covered with an observation door, and the top of each observation door is respectively hinged on the oven wall. The observation doors are shifted to two sides, the combustion condition in the combustion chamber can be observed through the observation ports, and when the hands are loosened, the observation doors automatically hang down to close the observation ports; if necessary, a small amount of air can be replenished from the viewing port.
As a further improvement of the utility model, a manhole is arranged on the pot cover, the manhole and the sulfur feed inlet is respectively located the both sides of the screw thread seat. The manhole is convenient for entering the drum for maintenance or cleaning.
As a further improvement of the utility model, the periphery of the combustion chamber except the left side wall is provided with a cooling jacket, and cooling water is injected into the cooling jacket. The cooling jacket can reduce the temperature of the peripheral wall of the combustion chamber, protect the steel plate from being burnt out and prolong the service life of the sulfur melting combustion furnace.
As a further improvement of the present invention, the first-stage absorption tower and the second-stage absorption tower respectively comprise a tower cylinder, the air inlet of the absorption tower is located on the upper circumference of the tower cylinder, and the acid liquor outlet of the absorption tower is located on the bottom circumference of the tower cylinder; an acid liquor overflow port is arranged on the circumference of the gas-liquid interface of the tower cylinder and is connected with the output pipe of the sulfurous acid solution; the upper port of the tower barrel is connected with a plurality of tower sections, a plurality of flange short sections are respectively arranged on the circumference of each tower section along the height direction, and the spraying branch pipes are respectively inserted into the flange short sections. Each spraying branch pipe can be integrally extracted from the corresponding flange short joint, so that the nozzle is convenient to overhaul; the filling is eliminated from each tower section, and the sulfur dioxide absorption form changes the water drop absorption formed by the filling into the nozzle atomization absorption, so that the contact area of the sulfur dioxide gas and the water is increased; sulfur dioxide enters the inner cavity of the tower from the air inlet of the absorption tower, flows upwards along each tower section, is sprayed by water mist of each spraying branch pipe along the way, improves the absorption rate of sulfur dioxide gas, and reduces the sulfur dioxide discharged into the atmosphere.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.
FIG. 1 is a flow chart of the system for producing a sulfurous acid solution according to the present invention.
FIG. 2 is a front view of the middle sulfur-melting burner of the present invention.
Fig. 3 is a top view of fig. 3.
Fig. 4 is a left side view of fig. 2.
Fig. 5 is a perspective view of fig. 2.
Fig. 6 is a cross-sectional view taken along a-a in fig. 2.
Fig. 7 is a cross-sectional view taken along line B-B of fig. 4.
Fig. 8 is a front view of the absorption tower of the present invention.
Fig. 9 is a perspective view of fig. 8.
In the figure: 1. a sulfur temporary storage tank; 2. a conveyor; 3. a sulfur melting combustion furnace; 3a. a combustion chamber; 3b, furnace cover; 3c, a drum; 3d, pot cover; 3e, valve core; 3f, a valve rod; 3f1. handwheel; 3g, a threaded seat; 3h, a sulfur feed port; 3j. an upper combustion plate; 3j1. upper overflow pipe; 3k, a lower combustion plate; 3m, an upper layer furnace frame; 3n, a lower layer furnace frame; 3p, inserting and drawing the air door; 3q. a sulfur dioxide discharge port; 3r, a flap door; 3s. an observation door; 3t, a manhole; 3u. cooling jacket; 4. a sulfur dioxide gas phase pipe; 5. a first-stage absorption tower; 5a, a tower barrel; 5b, an air inlet of the absorption tower; 5c, an acid liquor outlet; 5d, an acid liquor overflow port; 5e, tower section; 5f, flange short sections; 5g, a top exhaust port; 6. a primary tail gas pipe; 7. a secondary absorption tower; 8. a sulfurous acid solution output pipe; 9. a water jet vacuum unit; 10. preparing an acid water tank; 11. a circulation pump; 12. a main spray pipe; 13. spraying branch pipes; 14. a process water pipe.
Detailed Description
As shown in figure 1, the sulfurous acid solution preparation system of the utility model comprises a sulfur temporary storage tank 1, a sulfur melting combustion furnace 3, a first-stage absorption tower 5 and a second-stage absorption tower 7, wherein the outlet of the sulfur temporary storage tank 1 is connected with the inlet of a conveyor 2, the outlet of the conveyor 2 is connected with a sulfur feed inlet 3h of the sulfur melting combustion furnace 3, a sulfur dioxide discharge port 3q of the sulfur melting combustion furnace 3 is connected with the air inlet of the first-stage absorption tower 5 through a sulfur dioxide gas phase pipe 4, a top tail gas port 5g of the first-stage absorption tower 5 is connected with the air inlet of the second-stage absorption tower 7 through a first-stage tail gas pipe 6, acid liquor outlets 5c of the first-stage absorption tower 5 and the second-stage absorption tower 7 are respectively connected with an output pipe 8 of sulfurous acid solution, a top tail gas port 5g of the second-stage absorption tower 7 is connected with the air inlet of a water injection vacuum unit 9, the outlet of the acid making water tank 10 is connected with a spray main pipe 12 through a circulating pump 11, and the spray main pipe 12 is connected with each spray branch pipe 13 of the first-stage absorption tower 5 and the second-stage absorption tower 7.
As shown in fig. 2 to 7, the sulfur melting combustion furnace 3 comprises a closed combustion chamber 3a, a furnace cover 3b is arranged at the top of the combustion chamber 3a, a boiler barrel 3c is embedded in the furnace cover 3b, a pot cover 3d for closing the boiler barrel 3c is arranged at the top of the boiler barrel, a sulfur outflow port is arranged at the center of the bottom of the boiler barrel 3c, a valve core 3e is arranged at the sulfur outflow port, a valve rod 3f is hinged at the center of the top of the valve core 3e, the upper threaded section of the valve rod 3f is screwed in a threaded seat 3g, the threaded seat 3g is fixed at the center of the pot cover 3d, and a hand wheel 3f1 is arranged at; the sulfur feed port 3h is positioned at one side of the pot cover 3d.
After entering the boiler barrel 3c, the sulfur particles are firstly melted into liquid, the liquid sulfur falls into the combustion chamber 3a from the sulfur outflow port at the center of the bottom of the boiler barrel 3c for combustion, the flame and the high-temperature flue gas of the combustion chamber 3a preheat the sulfur particles in the boiler barrel 3c to melt the sulfur particles, and the molten sulfur enters the combustion chamber 3a for combustion, so that the contact area with air is increased, and insufficient combustion is avoided. Rotate valve rod 3f through hand wheel 3f1, can make case 3e go up and down to the flow that liquid sulphur got into combustion chamber 3a is become to be controllable by the original sulphur combustion capacity that can not be controlled, avoids sulphur excessive, causes the insufficient waste that causes of burning.
An upper combustion disc 3j horizontally arranged is arranged right below the boiler barrel 3c, an upper layer overflow pipe 3j1 is welded on the bottom plate of the upper combustion disc 3j, the top of the upper layer overflow pipe 3j1 is lower than the upper port of the upper combustion disc 3j, and a lower combustion disc 3k is arranged right below the upper combustion disc 3j. After the upper combustion plate 3j is full, the overflow pipe 3j1 overflows from the upper layer overflow pipe and falls into the lower combustion plate 3k, and the two layers of combustion plates are simultaneously combusted, so that the contact area of liquid sulfur and air is increased, and the yield of sulfur dioxide is increased.
The bottom of the left side wall of the combustion chamber 3a is provided with a combustion furnace air inlet, the combustion furnace air inlet is provided with a drawing and inserting air door 3p with adjustable opening, and the position of the combustion furnace air inlet is lower than that of the lower combustion disc 3 k; the sulfur dioxide discharge port 3q is located at the upper portion of the right side wall of the combustion chamber 3a. The air inlet of the combustion furnace is lower than the lower combustion disc 3k, the sulfur dioxide outlet 3q is positioned at the upper part of the other side, so that short flow of air is avoided, and oxygen is sufficiently supplied to the two layers of combustion discs.
The bottom of the upper combustion plate 3j is supported on the upper layer furnace frame 3m, the bottom of the lower combustion plate 3k is supported on the lower layer furnace frame 3n, and the upper layer furnace frame 3m and the lower layer furnace frame 3n are respectively welded on the inner wall of the combustion chamber 3 a; the upper part of the left side wall of the combustion chamber 3a inclines rightwards, and is provided with combustion disc access holes for the upper combustion disc 3j and the lower combustion disc 3k to be drawn out, the two combustion disc access holes are respectively covered with a flap door 3r, and the door shafts of the two flap doors 3r are respectively positioned on the upper part. The flap door 3r is upwards rotated, and then the upper combustion plate 3j or the lower combustion plate 3k can be drawn out; the upper part of the left side wall of the combustion chamber 3a inclines rightwards, so that the lower edge of the flap door 3r is naturally attached to the door frame, and the possibility of air leakage is reduced.
The two flap doors 3r are respectively provided with an observation port, each observation port is respectively covered with an observation door 3s, and the top of each observation door 3s is respectively hinged on the furnace wall. The observation door 3s is shifted to two sides, the combustion condition in the combustion chamber 3a can be observed through the observation port, and when the hands are loosened, the observation door 3s automatically hangs down to close the observation port; if necessary, a small amount of air can be replenished from the viewing port.
A manhole 3t is arranged on the pot cover 3d, and the manhole 3t and the sulfur feed port 3h are respectively positioned at two sides of the threaded seat 3g. Access to the drum 3c for inspection or cleaning is facilitated through the manhole 3t.
The outer periphery of the combustion chamber 3a except the left side wall is provided with a cooling jacket 3u, and cooling water is injected into the cooling jacket 3u. The cooling jacket 3u can lower the temperature of the peripheral wall of the combustion chamber, protect the steel plate from being burned out, and prolong the service life of the sulfur melting combustion furnace 3.
As shown in fig. 8 and 9, the primary absorption tower 5 and the secondary absorption tower 7 respectively include a tower tube 5a, an air inlet of the absorption tower is located on the upper circumference of the tower tube 5a, and an acid liquor outlet 5c of the absorption tower is located on the bottom circumference of the tower tube 5 a; an acid liquor overflow port 5d is arranged on the circumference of the gas-liquid interface of the tower barrel, and the acid liquor overflow port 5d is connected with a sulfurous acid solution output pipe 8; the upper port of the tower barrel 5a is connected with a plurality of tower sections 5e, a plurality of flange short sections 5f are respectively arranged on the circumference of each tower section 5e along the height direction, and spraying branch pipes 13 are respectively inserted into each flange short section 5f. Each spraying branch pipe 13 can be integrally extracted from the corresponding flange short section 5f, so that the nozzle is convenient to overhaul; the filling is eliminated from each tower section 5e, and the filling in the sulfur dioxide absorption form ensures that the water is absorbed into liquid drops and is changed into atomized absorption by a nozzle, so that the contact area of sulfur dioxide gas and water is increased; the sulfur dioxide enters the inner cavity of the tower from the air inlet 5b of the absorption tower, flows upwards along each tower section 5e, is sprayed by the water mist of each spraying branch pipe 13 along the way, improves the absorption rate of the sulfur dioxide gas, and reduces the sulfur dioxide discharged into the atmosphere.
After the sulfur particles are discharged from the temporary sulfur storage tank 1, the sulfur particles are sent into a sulfur melting combustion furnace 3 by a conveyor 2 to be melted and combusted, sulfur dioxide is generated, the sulfur dioxide firstly enters a first-stage absorption tower 5 through a sulfur dioxide gas phase pipe 4 to be contacted with water mist sprayed out of each spray branch pipe 13, a sulfurous acid solution is generated, tail gas of the first-stage absorption tower 5 enters a second-stage absorption tower 7 through a first-stage tail gas pipe 6 to be continuously absorbed, and sulfurous acid solution generated by the first-stage absorption tower 5 and the second-stage absorption tower 7 is discharged through a sulfurous acid solution output. The tail gas of the secondary absorption tower 7 is pumped out by the water injection vacuum unit 9 through a secondary tail gas pipe, the water inlet of the water injection vacuum unit 9 is connected with a process water pipe 14, the injected process water enters the acid making water tank 10 for collection, then a circulating pump 11 is sent to a spraying main pipe 12 and then enters the primary absorption tower 5 and each spraying branch pipe 13 of the secondary absorption tower 7 for circulating spraying.
After the sulfur dioxide is absorbed by two stages, the tail gas is changed from direct evacuation to evacuation after being fully absorbed by the water spraying vacuum unit 9, the sulfur dioxide content in the discharged tail gas is reduced from 300mg/m to 150mg/m through thin film evaporation, and the pollution to the environment is reduced. The sulfur consumption per ton of starch is reduced to 1.5kg of the system from 2.0kg of the original acid making process. In addition, the water spraying vacuum unit 9 sprays the process water of the corn starch production line, and the sprayed process water is used as a water source of spray water, so that the cyclic utilization of the process water is realized, the residual sulfur dioxide is pre-absorbed, the yield of the sulfurous acid solution is improved, the discharge of sewage is reduced, and the economic benefit and the environmental benefit are both achieved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.
Claims (9)
1. The sulfurous acid solution preparation system comprises a temporary sulfur storage tank, and is characterized in that: the outlet of the sulfur temporary storage tank is connected with the inlet of the conveyor, the outlet of the conveyor is connected with the sulfur feed inlet of the sulfur melting combustion furnace, the sulfur dioxide outlet of the sulfur melting combustion furnace is connected with the air inlet of the first-stage absorption tower through a sulfur dioxide gas phase pipe, the tail gas port at the top of the primary absorption tower is connected with the gas inlet of the secondary absorption tower through a primary tail gas pipe, acid liquor outlets of the first-stage absorption tower and the second-stage absorption tower are respectively connected with a sulfurous acid solution output pipe, the tail gas port at the top of the secondary absorption tower is connected with the gas inlet of the water injection vacuum unit through a secondary tail gas pipe, the process water outlet of the water injection vacuum unit is connected with the inlet of the acid making water tank, the outlet of the acid making water tank is connected with the spraying main pipe through the circulating pump, and the spraying main pipe is connected with the spraying branch pipes of the primary absorption tower and the secondary absorption tower.
2. The sulfurous acid solution preparation system according to claim 1, wherein: the sulfur melting combustion furnace comprises a closed combustion chamber, a furnace cover is arranged at the top of the combustion chamber, a boiler barrel is embedded in the furnace cover, a boiler cover for closing the boiler barrel is arranged at the top of the boiler barrel, a sulfur outflow port is arranged at the center of the bottom of the boiler barrel, a valve core is arranged at the sulfur outflow port, a valve rod is hinged to the center of the top of the valve core, the upper thread section of the valve rod is screwed in a thread seat, the thread seat is fixed at the center of the boiler cover, and a hand wheel is arranged at the top of the valve rod; the sulfur feed inlet is positioned at one side of the pot cover.
3. The sulfurous acid solution preparation system according to claim 2, wherein: an upper combustion disc horizontally arranged is arranged under the boiler barrel, an upper-layer overflow pipe is welded on a bottom plate of the upper combustion disc, the top of the upper-layer overflow pipe is lower than an upper port of the upper combustion disc, and a lower combustion disc is arranged under the upper combustion disc.
4. The sulfurous acid solution preparation system according to claim 3, wherein: the bottom of the left side wall of the combustion chamber is provided with a combustion furnace air inlet, the combustion furnace air inlet is provided with a drawing and inserting air door with adjustable opening, and the position of the combustion furnace air inlet is lower than that of the lower combustion disc; the sulfur dioxide outlet is positioned at the upper part of the right side wall of the combustion chamber.
5. The sulfurous acid solution preparation system according to claim 3, wherein: the bottom of the upper combustion disc is supported on the upper-layer furnace frame, the bottom of the lower combustion disc is supported on the lower-layer furnace frame, and the upper-layer furnace frame and the lower-layer furnace frame are respectively welded on the inner wall of the combustion chamber; the left side wall upper portion of combustion chamber inclines right, and is equipped with the combustion disc access hole that supplies combustion disc and lower combustion disc to take out, and two combustion disc access hole departments have covered respectively and have turned over the board door, and the door-hinge of two turning over the board doors is located upper portion respectively.
6. The sulfurous acid solution preparation system according to claim 5, wherein: the two flap doors are respectively provided with an observation port, each observation port is respectively covered with an observation door, and the top of each observation door is respectively hinged on the furnace wall.
7. The sulfurous acid solution preparation system according to claim 2, wherein: the pot cover is provided with a manhole, and the manhole and the sulfur feed inlet are respectively positioned at two sides of the threaded seat.
8. The sulfurous acid solution preparation system according to claim 4, 5 or 6, wherein: the periphery of the combustion chamber except the left side wall is provided with a cooling jacket, and cooling water is injected into the cooling jacket.
9. The sulfurous acid solution preparation system according to claim 1, wherein: the first-stage absorption tower and the second-stage absorption tower respectively comprise tower drums, air inlets of the absorption towers are located on the upper circumference of the tower drums, and acid liquor outlets of the absorption towers are located on the bottom circumference of the tower drums; an acid liquor overflow port is arranged on the circumference of the gas-liquid interface of the tower cylinder and is connected with the output pipe of the sulfurous acid solution; the upper port of the tower barrel is connected with a plurality of tower sections, a plurality of flange short sections are respectively arranged on the circumference of each tower section along the height direction, and the spraying branch pipes are respectively inserted into the flange short sections.
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| CN202021952159.0U CN213265741U (en) | 2020-09-09 | 2020-09-09 | Sulfurous acid solution preparation system |
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| CN202021952159.0U CN213265741U (en) | 2020-09-09 | 2020-09-09 | Sulfurous acid solution preparation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116715202A (en) * | 2023-07-04 | 2023-09-08 | 江苏永纪实业集团有限公司 | Circulation acidification equipment for sulfuric acid preparation process |
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2020
- 2020-09-09 CN CN202021952159.0U patent/CN213265741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116715202A (en) * | 2023-07-04 | 2023-09-08 | 江苏永纪实业集团有限公司 | Circulation acidification equipment for sulfuric acid preparation process |
| CN116715202B (en) * | 2023-07-04 | 2024-01-30 | 江苏永纪实业集团有限公司 | Circulation acidification equipment for sulfuric acid preparation process |
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