CN111760447A - Desulfurization reaction tower and dry desulfurization process - Google Patents
Desulfurization reaction tower and dry desulfurization process Download PDFInfo
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- CN111760447A CN111760447A CN202010624735.7A CN202010624735A CN111760447A CN 111760447 A CN111760447 A CN 111760447A CN 202010624735 A CN202010624735 A CN 202010624735A CN 111760447 A CN111760447 A CN 111760447A
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 62
- 230000023556 desulfurization Effects 0.000 title claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000003546 flue gas Substances 0.000 claims abstract description 61
- 238000004544 sputter deposition Methods 0.000 claims abstract description 48
- 239000002245 particle Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 5
- 239000006185 dispersion Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 67
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 50
- 239000000843 powder Substances 0.000 claims description 49
- 239000007789 gas Substances 0.000 claims description 26
- 238000007664 blowing Methods 0.000 claims description 25
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 25
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 20
- 230000008093 supporting effect Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 8
- 239000011593 sulfur Substances 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011328 necessary treatment Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a desulfurization reaction tower and a dry desulfurization process, and the technical scheme is as follows: including the frame, still include: the assembled tower body is fixed on the rack and comprises a base, a lower tower section, a middle tower section and an upper tower section; a boiler flue gas feed assembly for feeding boiler flue gas from outside the lower column section to inside the lower column section in the column body; the negative pressure drainage component is used for generating negative pressure to promote the upward stringing of the boiler flue gas; a sputtering ring pipe which is embedded and fixed in the middle tower section and is used for reacting a treating agent, wherein the inner wall surface of the sputtering ring pipe is provided with densely distributed sputtering holes; the power assembly is used for transmitting and inputting particles sprayed out of the external pulverizer into the sputtering ring pipe; a mixing assembly disposed within the sputtering collar for accelerating the dispersion of the reactive treatment agent; the desulfurization reaction tower has the advantages of good desulfurization effect, small volume, less waste generation, short desulfurization process flow and suitability for popularization and utilization.
Description
Technical Field
The invention relates to the field of boiler flue gas desulfurization treatment, in particular to a desulfurization reaction tower and a dry desulfurization process.
Background
At present, most of boiler flue gas in China is lack of necessary treatment, and a small number of boiler flue gas is desulfurized by a wet method, namely, hydrogen sulfide is absorbed by alkaline solution to generate hydrosulfate, and meanwhile, proper oxidation catalyst is selected to oxidize the hydrosulfate which absorbs the hydrogen sulfide in the solution to generate elemental sulfur, so that the desulfurization solution is regenerated, and a byproduct sulfur is obtained.
For example, refer to the chinese patent with the prior publication No. CN106000094A, which discloses a desulfurization reaction tower and a desulfurization process, wherein a regeneration reaction section, a desulfurization reaction section, a demister and a purified gas outlet are arranged in the reaction tower, the desulfurization reaction section is located above the regeneration reaction section, and the gas inlet is located in the desulfurization reaction section. The slurry pool of the desulfurization reaction section is connected with the liquid inlet of a bubble generator of the regeneration reaction section, and the gas inlet of the bubble generator is connected with the regeneration air outlet of the regeneration reaction section; and the slurry pool of the regeneration reaction section conveys the desulfurization reaction liquid added with the catalyst to a nozzle of the desulfurization reaction section through a pump.
The desulfurization reaction tower and the desulfurization process have the advantages of simple structure and process. However, the desulfurization reaction tower and the desulfurization process still have some disadvantages, such as: the wet desulphurization method causes more water wastes to be generated and is difficult to reuse, and the volume of equipment is very large due to the characteristic of wet desulphurization, and the treatment can be realized by a plurality of towers frequently; moreover, the existing few dry-type sulfur removal processes have the defects of low automation level, incomplete reaction during sulfur removal, difficulty in collecting treated dust and inconvenience in cleaning the tower body.
Disclosure of Invention
In view of the problems mentioned in the background art, the present invention is to provide a desulfurization reaction tower and a dry desulfurization process to solve the problems mentioned in the background art.
The technical purpose of the invention is realized by the following technical scheme:
a desulfurization reaction tower, includes the frame, still includes:
the assembled tower body is fixed on the rack and comprises a base, a lower tower section, a middle tower section and an upper tower section;
a boiler flue gas feed assembly for feeding boiler flue gas from outside the lower column section to inside the lower column section in the column body;
the negative pressure drainage component is used for generating negative pressure to promote the upward stringing of the boiler flue gas;
a sputtering ring pipe which is embedded and fixed in the middle tower section and is used for reacting a treating agent, wherein the inner wall surface of the sputtering ring pipe is provided with densely distributed sputtering holes;
the power assembly is used for transmitting and inputting particles sprayed out of the external pulverizer into the sputtering ring pipe;
a mixing assembly disposed within the sputtering collar for accelerating the dispersion of the reactive treatment agent;
a gas supply assembly for providing a high pressure gas flow to the sputtering collar;
the inner wall cleaning assembly is used for cleaning the inner wall of the tower body;
and a dust collection assembly for discharging dust from the upper tower section and receiving dust collection from the base.
Preferably, the boiler flue gas feeding assembly includes a boiler flue gas inlet pipe, a tapered pipe connecting part, a minor arc spherical cover, a threaded connecting part, densely distributed dust and gas outlets and a tapered retaining ring, the boiler flue gas inlet pipe is bent, the boiler flue gas inlet pipe obliquely penetrates through the tower body and extends into the tower body, the tapered pipe connecting part is in threaded connection with the top end of the boiler flue gas inlet pipe, the minor arc spherical cover and the threaded connecting part are integrally formed, the threaded connecting part is in threaded connection with the top end of the tapered pipe connecting part, the densely distributed dust and gas outlets are respectively arranged on the ring wall of the minor arc spherical cover, and the tapered retaining ring is fixed on an arc spherical surface in the minor arc spherical cover.
The preferred, negative pressure drainage subassembly includes first air exhauster, supporting ring board, vertical ring board portion, a plurality of embedding recess and a plurality of second air exhauster, first air exhauster installation is fixed in the toper connects the intraductal, the supporting ring board with integrated into one piece between the vertical ring board portion, vertical ring board portion is pegged graft and is fixed in the tower section down, the supporting ring board slope sets up, a plurality of the embedding recess is seted up respectively in the supporting ring board, a plurality of the second air exhauster is fixed respectively in the embedding recess.
Preferably, power component includes first powder pump, first pipeline, second pipeline, first ring pipeline and a plurality of row powder branch pipe, first powder pump is fixed the tower body is outside, first pipeline intercommunication is fixed the entering end of first powder pump, the other end and the blowout end of external rubbing crusher of first pipeline are connected, the second pipeline intercommunication is fixed the discharge end of first powder pump, the second pipeline with it is fixed to communicate between the first ring pipeline, a plurality of it fixes to arrange the powder branch pipe intercommunication respectively first ring pipeline is last and stretch into to in the sputtering ring pipeline.
Preferably, the component that scatters that mixes includes bearing ring, slide bearing, rotating-ring, a plurality of back shaft, a plurality of and mixes scattered pole, first gear, second gear, reduction gear and servo motor, the bearing ring is fixed in the sputtering ring is intraductal, the rotating-ring passes through slide bearing rotates to be connected the top of bearing ring, a plurality of the back shaft is fixed respectively the rotating-ring top, a plurality of it fixes respectively to mix scattered pole on the back shaft, first gear is fixed on the rampart of rotating-ring, the second gear rotates to be connected on the tower body, the second gear pass through servo motor with the reduction gear drives the rotation.
Preferably, the air feed subassembly includes third pipeline, second toroidal tube and a plurality of fourth pipeline, the third pipeline with it is fixed to communicate between the second toroidal tube, the third pipeline is used for introducing high pressure draught, the second toroidal tube is fixed the outside of well tower section, a plurality of the fourth pipeline communicates respectively to be fixed on the second toroidal tube, a plurality of the fourth pipeline communicates respectively to be fixed extremely in the sputtering annular tube.
Preferably, the inner wall cleaning assembly comprises a first annular air pipe, a first outer extension pipe, a plurality of first blowing heads, a second annular air pipe, a second outer extension pipe and a plurality of second blowing heads, the first annular air pipe is fixed in the upper tower section through a clamp, the first outer extension pipe and the plurality of first blowing heads are respectively communicated and fixed on the first annular air pipe, the second annular air pipe is fixed in the lower tower section through the clamp, the second outer extension pipe and the plurality of second blowing heads are respectively communicated and fixed with the second annular air pipe, and the plurality of first blowing heads and the plurality of second blowing heads respectively face the inner wall surface of the tower body.
Preferably, the dust collection assembly includes a dust collection box, a top cover, a first hose, a second powder pump, a third hose, a fourth hose and a third powder pump, the dust collection box is fixed on the frame, the top cover is clamped at the top end of the upper tower section, one end of the first hose is fixedly communicated with the top cover, the other end of the first hose is fixedly communicated with the input end of the second powder pump, the discharge end of the second powder pump is fixedly communicated with the second hose, one end of the third hose is fixedly communicated with the base, the other end of the third hose is fixedly communicated with the input end of the third powder pump, the discharge end of the third powder pump is fixedly communicated with the fourth hose, and the second hose and the fourth hose respectively extend into the dust collection box.
The invention also provides a dry desulfurization process, which specifically comprises the following steps:
s1, baking soda is used as a desulfurizer, the baking soda is crushed into particles with the particle size smaller than 600 meshes by a crusher, and the crushed baking soda is sprayed to the power assembly by the crusher;
s2, inputting the crushed baking soda into a sputtering ring pipe by using the power assembly;
s3, inputting the boiler flue gas into the tower body by using the boiler flue gas feeding assembly, and accelerating the rising speed of the boiler flue gas by using the negative pressure drainage assembly;
s4, blowing the baking soda particles into the tower body by the air supply component while stirring the baking soda particles by the mixing and dispersing component;
s5, carrying out secondary dust removal on the upper tower section by using a denitration dioxin removal dust remover:
s6, collecting the dust by using the dust collection assembly, cleaning the inner wall of the tower body by using the inner wall cleaning assembly when more dust is accumulated on the inner wall of the tower body, and collecting the cleaned dust by using the dust collection assembly.
In summary, the invention mainly has the following beneficial effects:
when the desulfurization reaction tower is used, the dry desulfurization process is adopted for removing sulfur from the boiler flue gas, compared with the traditional wet desulfurization process, the desulfurization reaction tower generates less waste, is easier to treat and utilize, and reduces the volume and the construction difficulty of the device; when the desulfurization reaction tower is used for desulfurization, boiler flue gas can be sucked in and fully diffused in the tower body through the boiler flue gas feeding assembly and the negative pressure drainage assembly, then, the outside reaction treating agent baking soda can be fed into the sputtering ring pipe through the power assembly and is mixed and dispersed through the mixing and dispersing assembly, the mixed and dispersed baking soda is sputtered out through the sputtering holes through the gas supply assembly, the production control is facilitated through the sputtering mode, the desulfurization effect is improved, and the automation level is high; the desulfurized dust can be collected by the dust collection assembly, the inner wall of the tower body can be fully cleaned by the inner wall cleaning assembly, and the cleaned dust can also be collected, so that secondary utilization is facilitated; moreover, the desulfurization process has the advantages of short flow and convenient control.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural cross-sectional view of the present invention;
FIG. 3 is a sectional view of the structure of the present invention for showing a boiler flue gas feeding module and a negative pressure inducing module;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is a schematic diagram of the present invention showing the construction of the power assembly and the mixing and dispersing assembly;
FIG. 6 is a cross-sectional view of the present invention showing the power assembly and the mixing and dispersing assembly;
FIG. 7 is a schematic structural view of the present invention showing a mixing and dispersing assembly;
FIG. 8 is a structural cross-sectional view of the present invention showing the upper tower section;
fig. 9 is a sectional view of the structure of the dust collection assembly of the present invention.
Reference numerals: 1. a frame; 2. a tower body; 21. a base; 22. a lower tower section; 23. a middle tower section; 24. an upper tower section; 3. a boiler flue gas feed assembly; 4. a negative pressure drainage assembly; 231. sputtering ring pipe; 232. sputtering holes; 5. a power assembly; 6. a mixing and dispersing component; 7. a gas supply assembly; 8. an inner wall cleaning assembly; 9. a dust collection assembly; 31. a boiler flue gas inlet pipe; 32. a tapered pipe receiving portion; 33. a minor arc ball cover; 34. a threaded collar portion; 35. a dust gas outlet; 36. a conical baffle ring; 41. a first exhaust fan; 42. a support ring plate; 43. a vertical ring plate portion; 44. embedding the groove; 45. a second exhaust fan; 51. a first powder pump; 52. a first conduit; 53. a second conduit; 54. a first annular duct; 55. discharging powder from the branch pipe; 61. a bearing ring; 62. a sliding bearing; 63. a rotating ring; 64. a support shaft; 65. mixing and dispersing rods; 66. a first gear; 67. a second gear; 68. a speed reducer; 69. a servo motor; 71. a third pipeline; 72. a second toroidal tube; 73. a fourth conduit; 81. a first annular duct; 82. a first outer extension tube; 83. a first blowing head; 84. a second annular air duct; 85. a second outer extension tube; 86. a second blowing head; 91. a dust collection box; 92. a top cover; 93. a first hose; 94. a second hose; 95. a second powder pump; 96. a third hose; 97. a fourth hose; 98. and a third powder pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, a desulfurization reaction tower for dry desulfurization, which is more suitable for industrial production needs than conventional wet desulfurization by removing sulfur-containing gas in a boiler flue using dry desulfurization.
Referring to fig. 1 and 2, the main body of the desulfurization reaction tower comprises a frame 1 and an assembled tower body 2 fixed on the frame 1, wherein the tower body 2 comprises a base 21, a lower tower section 22, a middle tower section 23 and an upper tower section 24, and the manufacturing, replacement and maintenance operations are facilitated by adopting the tower body 2 in a form that the base 21, the lower tower section 22, the middle tower section 23 and the upper tower section 24 are assembled and disassembled.
Referring to fig. 1 and 2, in order to realize dry desulfurization, the desulfurization reaction tower is provided with the following components: such as: a boiler flue gas feeding assembly 3 for feeding boiler flue gas from outside the lower tower section 22 to inside the lower tower section 22 in the tower body 2; a negative pressure drainage component 4 for generating negative pressure to promote the upward stringing of the boiler flue gas; a sputtering ring pipe 231 which is embedded and fixed in the middle tower section 23 and is used for reacting the treating agent, and the inner wall surface of the sputtering ring pipe 231 is provided with densely distributed sputtering holes 232; a power assembly 5 for transmitting and inputting the particles sprayed by the external pulverizer into the sputtering ring pipe 231; a mixing and dispersing unit 6 disposed in the sputtering pipe 231 for accelerating the dispersion of the reactive treating agent; a gas supply assembly 7 for providing a high pressure gas flow to the sputtering collar 231; an inner wall cleaning assembly 8 for cleaning the inner wall of the tower body 2; and a dust collection assembly 9 for discharging dust from the upper tower section 24 and receiving dust collection from the base 21.
Referring to fig. 1 and 2, when the desulfurization reaction tower is used, the dry desulfurization process is adopted for removing sulfur from boiler flue gas, and compared with the traditional wet desulfurization process, the desulfurization reaction tower generates less waste, is easier to treat and utilize, and has reduced volume and construction difficulty of the device; when the desulfurization reaction tower is used for desulfurization, boiler flue gas can be sucked in through the boiler flue gas feeding assembly 3 and the negative pressure drainage assembly 4 and is fully diffused in the tower body 2, then, the outside reaction treating agent baking soda can be fed into the sputtering ring pipe 231 by the power assembly 5 and is mixed and dispersed by the mixing and dispersing assembly 6, and the mixed and dispersed baking soda is sputtered out through the sputtering holes 232 by the gas supply assembly 7, so that the production control is facilitated by adopting a sputtering mode, the sulfur removal effect is increased, and the automation level is higher; the desulfurized dust can be collected by the dust collection assembly 9, the inner wall of the tower body 2 can be fully cleaned by the inner wall cleaning assembly 8, and the cleaned dust can also be collected, so that secondary utilization is facilitated; moreover, the desulfurization process has the advantages of short flow and convenient control.
Referring to FIGS. 3 and 4, wherein the boiler flue gas feeding assembly 3 comprises a boiler flue gas inlet duct 31, a tapering duct portion 32, a minor spherical cap 33, a threaded collar portion 34, a dense dust gas outlet 35 and a conical baffle ring 36; wherein the boiler flue gas inlet pipe 31 is bent, the boiler flue gas inlet pipe 31 obliquely penetrates through the tower body 2 and extends into the tower body 2, and when the boiler flue gas inlet pipe 31 is a bent pipe, the inflow of flue gas can be accelerated; wherein the conical pipe portion 32 is screwed to the top end of the boiler flue gas inlet pipe 31, and the existence of the conical pipe portion 32 can generate a vortex suction effect, thereby increasing the upward flow velocity of the air flow; the inferior arc spherical cover 33 and the threaded collar part 34 are integrally formed, the threaded collar part 34 is in threaded connection with the top end of the tapered collar part 32, and the inferior arc spherical cover 33 and the tapered collar part 32 can be conveniently connected and fixed by the threaded collar part 34; in order to realize the uniform diffusion of the flue gas, densely distributed dust gas outlets 35 are respectively arranged on the annular wall of the inferior arc spherical cover 33; in order to prevent the falling objects from above from entering into the inferior spherical cap 33, the conical retainer 36 is fixed to the spherical surface of the arc in the inferior spherical cap 33, so that the present boiler flue gas feeding assembly 3 can accelerate the feeding of the flue gas and can prevent the backflow of the flue gas.
Referring to fig. 3 and 4, in order to realize the ascending of flue gas sucked by negative pressure, the negative pressure flow guiding assembly 4 includes a first suction fan 41, a supporting ring plate 42, a vertical ring plate portion 43, six embedding grooves 44 and six second suction fans 45, wherein the first suction fan 41 is installed and fixed in the tapered connecting pipe portion 32, wherein the supporting ring plate 42 and the vertical ring plate portion 43 are integrally formed, the vertical ring plate portion 43 is inserted and fixed in the lower tower section 22, the supporting ring plate 42 is obliquely arranged, the six embedding grooves 44 are respectively formed in the supporting ring plate 42, and the six second suction fans 45 are respectively fixed in the embedding grooves 44; when the first suction fan 41 in the tapering duct section 32 is activated, a negative pressure is generated in the tapering duct section 32, which causes the flue gas from the boiler flue gas to flow into the duct 31 upwards, and the support ring plate 42 serves to support and fix the second suction fan 45, on the one hand, so as to generate a negative pressure above the minor arc dome cover 33, to suck the flue gas up and down, and on the other hand, to protect the second annular duct 84 and the second blowing head 86 in the inner wall of the tower body 2 from dust during cleaning of the inner wall.
Referring to fig. 5 and 6, the power assembly 5 includes a first powder pump 51, a first pipeline 52, a second pipeline 53, a first annular pipeline 54 and four powder discharge branch pipes 55, wherein the first powder pump 51 is fixed outside the tower body 2, the first pipeline 52 is fixedly communicated with an inlet end of the first powder pump 51, the other end of the first pipeline 52 is connected with an outlet end of an external crusher, the second pipeline 53 is fixedly communicated with an outlet end of the first powder pump 51, the second pipeline 53 is fixedly communicated with the first annular pipeline 54, and a plurality of powder discharge branch pipes 55 are respectively fixedly communicated with the first annular pipeline 54 and extend into the sputtering ring pipe 231; after the baking soda is pulverized into powder by the external pulverizer and sprayed out, the first powder pump 51 can be started, and the powder is fed into the sputtering ring pipe 231 by the first powder pump 51 through the first pipeline 52, the second pipeline 53, the first annular pipeline 54 and the powder discharge branch pipe 55 so as to be convenient for sputtering.
Referring to fig. 6 and 7, the mixing and dispersing assembly 6 includes a support ring 61, a sliding bearing 62, a rotating ring 63, four support shafts 64, twelve mixing and dispersing rods 65, a first gear 66, a second gear 67, a speed reducer 68 and a servo motor 69, wherein the support ring 61 is fixed in the sputtering ring pipe 231, the rotating ring 63 is rotatably connected above the support ring 61 through the sliding bearing 62, the four support shafts 64 are respectively fixed above the rotating ring 63, the twelve mixing and dispersing rods 65 are respectively fixed on the support shafts 64, the first gear 66 is fixed on the ring wall of the rotating ring 63, the second gear 67 is rotatably connected on the tower body 2, and the second gear 67 is driven to rotate by the servo motor 69 and the speed reducer 68; when the servo motor 69 is started, the first gear 66 can be driven to rotate, the second gear 67 is driven to rotate, the supporting shaft 64 and the dispersing rod 65 are driven to rotate, and the baking soda powder in the sputtering ring pipe 231 is stirred and rolled so as to be blown out by the high-pressure drum conveniently.
Referring to fig. 5 and 6, the gas supply assembly 7 includes a third pipe 71, a second annular pipe 72, and twelve fourth pipes 73, wherein the third pipe 71 is fixed to the second annular pipe 72 in a communicating manner, the third pipe 71 is used for introducing a high pressure gas flow, the second annular pipe 72 is fixed to the outside of the middle tower segment 23, a plurality of fourth pipes 73 are respectively fixed to the second annular pipe 72 in a communicating manner, the twelve fourth pipes 73 are respectively fixed to the sputtering ring pipe 231 in a communicating manner, the third pipe 71 can be externally connected to a high pressure gas source when sputtering is performed, and the high pressure gas blows baking soda powder in the sputtering ring pipe 231 out into the tower body 2 through the third pipe 71, the second annular pipe 72, and the twelve fourth pipes 73 to ensure sufficient sulfur removal.
Referring to fig. 4 and 8, in order to facilitate cleaning of the inner wall of the tower body 2, the inner wall cleaning assembly 8 is provided to include a first annular duct 81, a first external duct 82, twelve first blowing heads 83, a second annular duct 84, a second external duct 85, and twelve second blowing heads 86, wherein the first annular duct 81 is fixed in the upper tower section 24 by a clamp, the first external duct 82 and the twelve first blowing heads 83 are respectively fixed to the first annular duct 81 in a communicating manner, the second annular duct 84 is fixed in the lower tower section 22 by a clamp, the second external duct 85 and the twelve second blowing heads 86 are respectively fixed to the second annular duct 84 in a communicating manner, the twelve first blowing heads 83 and the twelve second blowing heads 86 are respectively disposed toward the inner wall surface of the tower body 2 at an inclination angle of 60 °, when a high pressure air is supplied through the first external duct 82 and the second external duct 85, the dust can be blown out of the inner wall of the tower body 2 by the first blowing heads 83 and the second blowing heads 86, the function of clearance tower body 2 inner wall has been reached.
Referring to fig. 2 and 9, the dust collection assembly 9 includes a dust collection box 91, a top cover 92, a first hose 93, a second hose 94, a second powder pump 95, a third hose 96, a fourth hose 97 and a third powder pump 98, the dust collection box 91 is fixed on the frame 1, the top cover 92 is clamped at the top end of the upper tower section 24, one end of the first hose 93 is fixedly communicated with the top cover 92, the other end of the first hose 93 is fixedly communicated with the input end of the second powder pump 95, the discharge end of the second powder pump 95 is fixedly communicated with the second hose 94, one end of the third hose 96 is fixedly communicated with the base 21, the other end of the third hose 96 is fixedly communicated with the input end of the third powder pump 98, the discharge end of the third powder pump 98 is fixedly communicated with the fourth hose 97, and the second hose 94 and the fourth hose 97 respectively extend into the dust collection box 91; after the time for controlling the desulfurizing reaction is reached, the second powder pump 95 can be started to pump the treated flue gas and dust to the collecting box through the first hose 93 and the second hose 94, and the third powder pump 98 can be started to collect the cleaned dust to the dust collecting box 91 through the third hose 96 and the fourth hose 97 after the tower body 2 is cleaned.
Example 2
The difference from the embodiment 1 is that a dry desulfurization process is also provided, which specifically comprises the following steps:
the invention also provides a dry desulfurization process, which specifically comprises the following steps:
s1, baking soda is used as a desulfurizer, the baking soda is crushed into particles with the granularity of 600 meshes by a crusher, and the crushed baking soda is sprayed to the power assembly 5 by the crusher;
s2, inputting the crushed baking soda into the sputtering ring pipe 231 by using the power assembly 5;
s3, inputting the boiler flue gas into the tower body 2 by using the boiler flue gas feeding assembly 3, and accelerating the rising speed of the boiler flue gas by using the negative pressure drainage assembly 4;
s4, blowing the baking soda particles into the tower body 2 by the air supply module 7 while stirring the baking soda particles by the dispersing module 6;
s5, carrying out secondary dust removal on the upper tower section 24 by using a denitration dioxin removal dust remover:
s6, collecting the dust by using the dust collection assembly 9, cleaning the inner wall of the tower body 2 by using the inner wall cleaning assembly 8 when more dust is accumulated on the inner wall of the tower body 2, and collecting the cleaned dust by using the dust collection assembly 9.
Example 3
The difference from example 1 is that:
in the device, the outer wall of a tower body 2 is provided with a heat-insulating layer and an outer shell layer, wherein the heat-insulating layer is made of die-cast asbestos, and the outer shell layer is made of stainless steel; the base 21, the lower tower section 22, the middle tower section 23 and the upper tower section 24 are fastened layer by layer and fixed through bolts so as to be convenient to disassemble;
in addition, referring to fig. 9, in the present apparatus, an air pressure balancing assembly is disposed on the dust collecting box 91, and comprises a protruding pipe, a filter mantle, a threaded snap ring, a cotton yarn layer and a melt-blown cloth layer, wherein the protruding pipe is fixed on the dust collecting box 91 through flange connection, the filter mantle is threaded on the top of the protruding pipe, the threaded snap ring is threaded in the protruding pipe, the cotton yarn layer and the melt-blown cloth layer are respectively fixed in the threaded snap ring, and this arrangement can both prevent the treated dust from scattering outside and keep the air pressure in the dust collecting box 91 balanced;
in addition, the third pipe 71, the first external pipe 82, the second external pipe 85 and the boiler flue gas inlet pipe 31 of the device are respectively provided with a valve and a pressure gauge, and the ends of the third pipe 71, the first external pipe 82, the second external pipe 85 and the boiler flue gas inlet pipe 31 are all fixed with connecting flanges for convenient connection.
In addition, the device is also provided with a temperature controller and a pressure detector inside the tower body 2, and the temperature inside the tower body 2 can be controlled by utilizing the temperature controller to promote the reaction; utilize pressure detector to carry out real-time measurement and control to 2 internal pressures of tower body, improve the security.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a desulfurization reaction tower, includes frame (1), its characterized in that: further comprising:
the assembled tower body (2) is fixed on the rack (1), and the tower body (2) comprises a base (21), a lower tower section (22), a middle tower section (23) and an upper tower section (24);
a boiler flue gas feed assembly (3) for feeding boiler flue gas from outside the lower tower section (22) in the tower (2) to inside the lower tower section (22);
a negative pressure diversion assembly (4) for generating negative pressure to promote the upward stringing of the boiler flue gas;
a sputtering ring pipe (231) which is embedded and fixed in the middle tower section (23) and is used for reacting a treating agent, wherein the inner wall surface of the sputtering ring pipe (231) is provided with densely distributed sputtering holes (232);
a power assembly (5) for transmitting and inputting the particles sprayed by the external crusher to the sputtering ring pipe (231);
a mixing assembly (6) disposed within the sputtering collar (231) for accelerating the dispersion of reactive treatment agent;
a gas supply assembly (7) for providing a high pressure gas flow to the sputtering collar (231);
an inner wall cleaning assembly (8) for cleaning the inner wall of the tower body (2);
and a dust collection assembly (9) for discharging dust from the upper tower section (24) and receiving dust collection from the base (21).
2. The desulfurization reaction tower of claim 1, wherein: the boiler flue gas feeding assembly (3) comprises a boiler flue gas discharging pipe (31), a conical connecting pipe part (32), a minor arc spherical cover (33), a threaded connecting ring part (34), a densely distributed dust and gas outlet (35) and a conical baffle ring (36), the boiler flue gas inlet pipe (31) is bent, the boiler flue gas inlet pipe (31) obliquely penetrates through the tower body (2) and extends into the tower body (2), the tapered connecting pipe portion (32) is screwed to the top end of the boiler flue gas inlet pipe (31), the inferior arc spherical cover (33) and the threaded collar part (34) are integrally formed, the threaded connecting ring part (34) is in threaded connection with the top end of the conical connecting pipe part (32), the densely distributed dust and gas outlets (35) are respectively arranged on the ring wall of the inferior arc spherical cover (33), the conical baffle ring (36) is fixed on an arc-shaped spherical surface in the inferior arc spherical cover (33).
3. A desulfurization reaction tower in accordance with claim 2, wherein: negative pressure drainage subassembly (4) include first air exhauster (41), support ring board (42), vertical ring board portion (43), a plurality of embedding recess (44) and a plurality of second air exhauster (45), first air exhauster (41) installation is fixed in toper connecting pipe portion (32), support ring board (42) with integrated into one piece between vertical ring board portion (43), vertical ring board portion (43) are pegged graft and are fixed in lower tower section (22), support ring board (42) slope sets up, a plurality of embedding recess (44) are seted up respectively in support ring board (42), a plurality of second air exhauster (45) are fixed respectively in embedding recess (44).
4. The desulfurization reaction tower of claim 1, wherein: the power assembly (5) comprises a first powder pump (51), a first pipeline (52), a second pipeline (53), a first annular pipeline (54) and a plurality of powder discharge branch pipes (55), the first powder pump (51) is fixed outside the tower body (2), the first pipeline (52) is fixedly communicated with an inlet end of the first powder pump (51), the other end of the first pipeline (52) is connected with an outlet end of an external crusher, the second pipeline (53) is fixedly communicated with an outlet end of the first powder pump (51), the second pipeline (53) is fixedly communicated with the first annular pipeline (54), and the powder discharge branch pipes (55) are fixedly communicated with the first annular pipeline (54) and extend into the sputtering annular pipe (231).
5. The desulfurization reaction tower of claim 1, wherein: the mixing and dispersing component (6) comprises a bearing ring (61), a sliding bearing (62), a rotating ring (63), a plurality of supporting shafts (64), a plurality of mixing and dispersing rods (65), a first gear (66), a second gear (67), a speed reducer (68) and a servo motor (69), the supporting ring (61) is fixed in the sputtering ring pipe (231), the rotating ring (63) is rotatably connected above the supporting ring (61) through the sliding bearing (62), a plurality of supporting shafts (64) are respectively fixed above the rotating ring (63), a plurality of scattering rods (65) are respectively fixed on the supporting shafts (64), the first gear (66) is fixed on the annular wall of the rotating ring (63), second gear (67) rotate to be connected on tower body (2), second gear (67) pass through servo motor (69) with reduction gear (68) drive the rotation.
6. The desulfurization reaction tower of claim 1, wherein: the gas supply assembly (7) comprises a third pipeline (71), a second annular pipeline (72) and a plurality of fourth pipelines (73), the third pipeline (71) is fixedly communicated with the second annular pipeline (72), the third pipeline (71) is used for introducing high-pressure gas flow, the second annular pipeline (72) is fixedly arranged outside the middle tower section (23), the fourth pipelines (73) are respectively fixedly communicated with the second annular pipeline (72), and the fourth pipelines (73) are respectively fixedly communicated with the sputtering ring pipe (231).
7. The desulfurization reaction tower of claim 1, wherein: the inner wall cleaning component (8) comprises a first annular air pipe (81), a first outer extension pipe (82), a plurality of first blowing heads (83), a second annular air pipe (84), a second outer extension pipe (85) and a plurality of second blowing heads (86), the first annular air pipe (81) is fixed in the upper tower section (24) through a hoop, the first outer extension pipe (82) and a plurality of first blowing heads (83) are respectively communicated and fixed on the first annular air pipe (81), the second annular air pipe (84) is fixed in the lower tower section (22) through a clamp, the second outer extension pipe (85) and the plurality of second air blowing heads (86) are fixedly communicated with the second annular air pipe (84) respectively, and the plurality of first air blowing heads (83) and the plurality of second air blowing heads (86) are arranged towards the inner wall surface of the tower body (2) respectively.
8. The desulfurization reaction tower of claim 1, wherein: the dust collection assembly (9) comprises a dust collection box (91), a top cover (92), a first hose (93), a second hose (94), a second powder pump (95), a third hose (96), a fourth hose (97) and a third powder pump (98), the dust collection box (91) is fixed on the frame (1), the top cover (92) is clamped at the top end of the upper tower section (24), one end of the first hose (93) is fixedly communicated with the top cover (92), the other end of the first hose (93) is fixedly communicated with the input end of the second powder pump (95), the discharge end of the second powder pump (95) is fixedly communicated with the second hose (94), one end of the third hose (96) is fixedly communicated with the base (21), and the other end of the third hose (96) is fixedly communicated with the input end of the third powder pump (98), the discharge end of the third powder pump (98) is fixedly communicated with the fourth hose (97), and the second hose (94) and the fourth hose (97) respectively extend into the dust collection box (91).
9. A dry desulfurization process is characterized in that: the method specifically comprises the following steps:
s1, baking soda is used as a desulfurizing agent, the baking soda is crushed into particles with the particle size smaller than 600 meshes by a crusher, and the crushed baking soda is sprayed to the power assembly (5) by the crusher;
s2, inputting the crushed baking soda into a sputtering ring pipe (231) by using the power assembly (5);
s3, inputting the boiler flue gas into the tower body (2) by using the boiler flue gas feeding assembly (3), and accelerating the rising speed of the boiler flue gas by using the negative pressure drainage assembly (4);
s4, using the mixing and dispersing component (6) to stir the baking soda particles, and using the air supply component (7) to blow the baking soda particles into the tower body (2);
s5, carrying out secondary dust removal on the upper tower section (24) by using a denitration and dioxin removal dust remover:
s6, collecting the dust by using the dust collection assembly (9), starting the inner wall cleaning assembly (8) to clean the inner wall of the tower body (2) when more dust is accumulated on the inner wall of the tower body (2), and collecting the cleaned dust by using the dust collection assembly (9) as well.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933951A (en) * | 2021-02-01 | 2021-06-11 | 内蒙古金石镁业有限公司 | Magnesium refining furnace desulfurization dust collecting equipment |
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