CN117443175B - Desulfurization thick liquid does not have stirring and prevents deposiing device - Google Patents
Desulfurization thick liquid does not have stirring and prevents deposiing device Download PDFInfo
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- CN117443175B CN117443175B CN202311565396.XA CN202311565396A CN117443175B CN 117443175 B CN117443175 B CN 117443175B CN 202311565396 A CN202311565396 A CN 202311565396A CN 117443175 B CN117443175 B CN 117443175B
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 117
- 230000023556 desulfurization Effects 0.000 title claims abstract description 117
- 239000007788 liquid Substances 0.000 title claims description 35
- 238000003756 stirring Methods 0.000 title claims description 26
- 239000002002 slurry Substances 0.000 claims abstract description 383
- 238000001556 precipitation Methods 0.000 claims abstract description 35
- 238000007254 oxidation reaction Methods 0.000 claims description 201
- 230000003647 oxidation Effects 0.000 claims description 197
- 238000004062 sedimentation Methods 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims 4
- 239000013049 sediment Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 16
- 238000005381 potential energy Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
- 239000003546 flue gas Substances 0.000 description 11
- 230000006872 improvement Effects 0.000 description 9
- 210000001503 joint Anatomy 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- 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
- B01D53/346—Controlling the process
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
-
- 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
- B01D2258/0233—Other waste gases from cement factories
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- 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
- B01D2258/025—Other waste gases from metallurgy plants
-
- 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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- Chemical & Material Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention relates to a stirring-free anti-precipitation device for desulfurization slurry, which comprises a tower body, a plurality of slurry circulating pumps, an annular slurry output pipe and a plurality of slurry drainage pieces. The annular slurry output pipe is arranged at the bottom of the tower body; and the slurry inlet pipes are communicated with the annular slurry output pipe. One end of each slurry drainage piece is communicated with the annular slurry output pipe, the other end of each slurry drainage piece is directed to the center of the tower body, a plurality of side slurry suction holes are formed in one side of each slurry drainage piece, side slurry suction holes are formed in the opposite sides of any two adjacent slurry drainage pieces at different times, and a plurality of end slurry suction holes are formed in the end face of one end of each slurry drainage piece, facing the side wall of the tower body. The invention utilizes the potential energy of the slurry circulating pump to pump the desulfurization slurry at the bottom of the tower body to automatically rotate and flow towards one direction and be pumped away, and the desulfurization slurry prevents the precipitation of particles in the rotating and flowing process, thereby ensuring the normal circulating and conveying of the desulfurization slurry.
Description
Technical Field
The invention relates to the technical field of wet flue gas desulfurization, in particular to a stirring-free precipitation-preventing device for desulfurization slurry.
Background
The existing anti-precipitation process of desulfurization slurry in the flue gas wet desulfurization project of large-scale coal-fired equipment in the industries of thermal power plants, metallurgy, cement and the like mainly relies on the conventional side-feeding stirring process to continuously stir the slurry, prevents particles in the desulfurization slurry from precipitating at the bottom of a tower and agglomerating, and avoids accumulation and blockage to directly influence the normal conveying of a slurry circulating pump.
The side-entering type stirrer is arranged at the bottom and the upper position of the absorption tower and the AFT tower, a set of wet desulphurization device needs a plurality of side-entering type stirrers, the periphery of each tower is uniformly and highly symmetrically arranged, an oxidation air main pipe is arranged above the side-entering type stirrer, the oxidation air main pipe surrounds the tower, an air supply branch pipe is arranged at the vertical position above the stirring impeller of each side-entering type stirrer, under the high-speed operation of the oxidation fan, pressure air is sent to the position above the impeller of the stirrer in the tower, and under the rotation driving of the stirring impeller, the pressure air is stirred and mixed with desulphurization slurry, and oxidation reaction is carried out on the desulphurization slurry. Continuously feeding new lime slurry into the spray layers of the absorption tower and the AFT tower, continuously discharging gypsum slurry generated after full chemical reaction at the bottom of the tower to form a continuous circulation chemical reaction system, arranging a plurality of slurry circulation pumps on one side of the absorption tower and one side of the AFT tower, lifting desulfurization slurry to the spray layers with different heights through the operation of the circulation pumps, and carrying out atomization spraying on the slurry under the action of a spiral nozzle to carry out chemical reaction in mixed contact with flue gas so as to achieve the effect of flue gas desulfurization; the sprayed slurry falls into an absorption tower or an AFT tower, and the slurry is reciprocally circulated to carry out chemical reaction with the flue gas, so as to meet the requirement of flue gas desulfurization and ultra-low emission.
However, after long-term operation on site, the existing side-entering stirring process is found to have the problems of high energy consumption, high investment cost, high maintenance cost, easiness in environmental pollution, potential safety hazard, poor process stability and the like. The patent with publication number CN115814589A discloses a desulfurization slurry self-stirring device, which uses potential energy of suction force of a slurry circulating pump and thrust of oxidation air inlet as a driving force for rotation of a self-stirring mechanism, fully utilizes equipment such as a slurry circulating pump and an oxidation fan which are configured on site, and realizes the self-stirring function of slurry. However, in the self-stirring device, the rotating cylinder and the slurry pipeline always need to do rotary motion, wear exists during long-term rotation, faults are easy to occur, and once the rotating cylinder and the slurry pipeline are immersed in desulfurization slurry, shutdown maintenance is needed once the faults occur, so that stable operation of equipment is not facilitated; the slurry pipeline led out from the bottom of the container of the self-stirring device has a right-angle bend, slurry is easy to accumulate at the bend, thereby blocking is caused, and stable operation of equipment is not facilitated; and this from agitating unit needs to change current tower body structure, and the cost is higher, is unfavorable for promoting.
Disclosure of Invention
Based on the problems existing in the prior art, the invention aims to provide a stirring-free anti-precipitation device for desulfurization slurry.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention provides a desulfurization slurry stirring-free anti-precipitation device, which comprises a tower body and a plurality of slurry circulating pumps arranged outside the tower body, wherein the inlet of each slurry circulating pump is connected with a slurry inlet pipe extending into the tower body, and the device further comprises:
the annular slurry output pipe is arranged at the bottom of the tower body; the slurry inlet pipes are communicated with the annular slurry output pipe; and
The slurry drainage pieces are circumferentially distributed, one ends of the slurry drainage pieces are communicated with the annular slurry output pipe, the other ends of the slurry drainage pieces are directed to the center of the tower body, one side of each slurry drainage piece is provided with a plurality of side slurry suction holes, the opposite sides of any two adjacent slurry drainage pieces are not simultaneously provided with side slurry suction holes, and one end face of each slurry drainage piece, facing the side wall of the tower body, is provided with a plurality of end slurry suction holes; the plurality of slurry circulating pumps suck the desulfurization slurry in the tower body outwards through the annular slurry output pipe and the plurality of slurry drainage pieces.
According to the invention, the annular slurry output pipe and the plurality of circumferentially distributed slurry drainage pieces are arranged, and the side slurry suction holes and the end slurry suction holes are arranged on the slurry drainage pieces, so that the slurry circulating pump can suck desulfurization slurry at each corner of the bottom of the tower body, the potential energy of the slurry circulating pump is utilized to enable the desulfurization slurry at the bottom of the tower body to flow in an autonomous rotating way and to be sucked away in a unified horizontal tangential way, an autonomous rotating spiral ring is formed at the bottom of the tower body, the desulfurization slurry can prevent precipitation of particles in the rotational flow process, the particles falling from the upper side can float in a spiral running track, the falling particles are always in suspension motion, no precipitation time is ensured, the falling path of the particles is prolonged, the falling time is prolonged, the suspended particles in the desulfurization slurry falling at each corner of the bottom of the tower body can be pumped away in time by the slurry circulating pump, and normal circulating conveying of the desulfurization slurry is ensured.
As a further improvement of the scheme, a plurality of support pipes are communicated below the annular slurry output pipe, the plurality of support pipes are uniformly distributed in circumference, the bottom of each support pipe is arranged at the bottom of the tower body, a plurality of upper pipe section flanges are communicated above the annular slurry output pipe, and the plurality of upper pipe section flanges are uniformly distributed in circumference;
The slurry drainage pieces are respectively arranged in one-to-one correspondence with the support pipes and the upper pipe section flanges; the slurry drainage piece comprises two slurry drainage pipes which are respectively communicated with the corresponding support pipe and the upper pipe section flange, a plurality of side slurry suction holes are formed in the same side of the two slurry drainage pipes, and a plurality of end slurry suction holes are formed in the end face of one end of each of the two slurry drainage pipes, which faces the side wall of the tower body.
As a further improvement of the above-mentioned scheme of the invention, on each slurry drainage tube, a plurality of side slurry suction holes are distributed in a plurality of rows, and the plurality of side slurry suction holes of each row are arranged at intervals in the axial direction of the slurry drainage tube and the plurality of side slurry suction holes of any two adjacent rows are staggered;
And/or, in each slurry drainage tube, a plurality of side slurry suction holes are formed in a region which rotates downwards by 60-90 degrees by taking the horizontal plane of the central axis of the slurry drainage tube as a starting point.
As a further improvement of the above-mentioned scheme of the present invention, the sum of the cross-sectional areas of the side slurry suction holes and the end slurry suction holes of the plurality of slurry guide members is larger than the sum of the cross-sectional areas of the plurality of slurry inlet pipes.
As a further improvement of the above-mentioned scheme of the present invention, the desulfurization slurry stirring-free anti-settling device further comprises:
The centripetal sedimentation prevention fixing column is vertically arranged in the tower body and is coaxially arranged with the tower body, the bottom end of the centripetal sedimentation prevention fixing column is fixed at the bottom end of the tower body, and the top end of the centripetal sedimentation prevention fixing column is conical; one end of each slurry drainage piece far away from the annular output pipe is fixed on the centripetal sedimentation prevention fixed column.
As a further improvement of the above-mentioned scheme of the present invention, the desulfurization slurry stirring-free anti-settling device further comprises:
The annular oxidation wind input pipe is coaxially arranged in the tower body and is positioned above the annular slurry output pipe, the bottom of the annular oxidation wind input pipe is communicated with a plurality of lower pipe section flanges, and the plurality of lower pipe section flanges are circumferentially distributed;
The oxidation wind input branch pipes are circumferentially distributed, the oxidation wind input branch pipes are respectively communicated with the lower pipe section flanges, one ends of the oxidation wind input branch pipes, which are far away from the lower pipe section flanges, are all directed to the center of the tower body, one side of each oxidation wind input branch pipe is provided with a plurality of side oxidation wind input holes, the opposite sides of any two adjacent oxidation wind input branch pipes are not provided with side oxidation wind input holes, and one end face of each oxidation wind input branch pipe, which faces the side wall of the tower body, is provided with a plurality of end oxidation wind input holes;
An oxidation wind input main pipe, one end of which is communicated with the annular oxidation wind input pipe and the other end of which extends out of the tower body; and
The fan is connected with the other end of the oxidation wind input main pipe, and is used for conveying high-pressure oxidation wind into the oxidation wind input branch pipes through the oxidation wind input main pipe and the annular oxidation wind input pipe, and the high-pressure oxidation wind is sprayed out from the side oxidation wind input holes and the end oxidation wind input holes.
As a further improvement of the scheme of the invention, a plurality of oxidation wind input branch pipes are respectively arranged in one-to-one correspondence with a plurality of slurry drainage pieces, the corresponding oxidation wind input branch pipes and the slurry drainage pieces are positioned in the same vertical plane, and a side oxidation wind input hole is formed in one side of the oxidation wind input branch pipe, which is far away from the corresponding slurry drainage piece and is provided with a side slurry suction hole;
And/or, on each oxidation wind input branch pipe, a plurality of side oxidation wind input holes are distributed in a plurality of rows, and the plurality of side oxidation wind input holes of each row are axially arranged at intervals on the oxidation wind input branch pipe and are staggered in any two adjacent rows;
and/or, in each oxidation wind input branch pipe, a plurality of side oxidation wind input holes are formed in an area which downwards rotates by 60-90 degrees by taking the horizontal plane of the central axis of the oxidation wind input branch pipe as a starting point.
As a further improvement of the above-described aspect of the present invention, the sum of the cross sectional areas of the side oxidation wind input holes and the end oxidation wind input holes of the plurality of oxidation wind input branch pipes is not smaller than the cross sectional area of the oxidation wind input header pipe;
And/or, a slurry discharging hole is formed in the bottom of one end of each oxidation wind input branch pipe, which is close to the inner wall of the tower body.
As a further improvement of the above-mentioned scheme of the present invention, the desulfurization slurry stirring-free anti-settling device further comprises:
A plurality of vertically arranged support columns; a support column is arranged between the corresponding oxidation wind input branch pipe and the slurry drainage piece, the top end of the support column is connected with the oxidation wind input branch pipe through an upper hoop piece, and the bottom end of the support column is connected with the slurry drainage piece through a lower hoop piece; and
A plurality of adjustable tie rods; an adjustable pull rod is arranged between any two adjacent support columns, the two adjacent adjustable pull rods are distributed in a V shape, one end of each adjustable pull rod is movably matched and connected with the upper hoop through an upper hook body, and the other end of each adjustable pull rod is movably matched and connected with the lower hoop through a lower hook body.
As a further improvement of the above-mentioned scheme of the present invention, the desulfurization slurry stirring-free anti-settling device further comprises:
the slurry guide plates are all installed on the inner wall of the tower body and are distributed circumferentially, the height of each slurry guide plate is higher than that of the annular oxidation wind input branch pipe, and the flow facing surfaces of the slurry guide plates are arc-shaped surfaces.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the annular slurry output pipe and the plurality of circumferentially distributed slurry drainage pieces are arranged, and the side slurry suction holes and the end slurry suction holes are arranged on the slurry drainage pieces, so that the slurry circulating pump can suck desulfurization slurry at each corner of the bottom of the tower body, the potential energy of the slurry circulating pump is utilized to enable the desulfurization slurry at the bottom of the tower body to flow in an autonomous rotating way and to be sucked away in a unified horizontal tangential way, an autonomous rotating spiral ring is formed at the bottom of the tower body, the desulfurization slurry can prevent precipitation of particles in the rotational flow process, the particles falling from the upper side can float in a spiral running track, the falling particles are always in suspension motion, no precipitation time is ensured, the falling path of the particles is prolonged, the falling time is prolonged, the suspended particles in the desulfurization slurry falling at each corner of the bottom of the tower body can be pumped away in time by the slurry circulating pump, and normal circulating conveying of the desulfurization slurry is ensured.
2. According to the invention, the centripetal sedimentation prevention fixed column is arranged at the central position of the tower body, the top of the centripetal sedimentation prevention fixed column is in a cone structure, and the desulfurization slurry falling from a high position falls on the surface of the top end of the centripetal sedimentation prevention fixed column, so that the desulfurization slurry can freely slide down, and slurry particles are prevented from sedimentation, aggregation and agglomeration.
3. According to the invention, the annular oxidation wind input pipe and the plurality of oxidation wind input branch pipes distributed circumferentially are arranged, compressed air enters the annular oxidation wind input pipe from the oxidation wind input main pipe, enters the plurality of oxidation wind input branch pipes and is input into the desulfurization slurry from the side oxidation wind input holes and the end oxidation wind input holes, so that the oxidation wind input is more finely distributed and homogenized, and the oxidation reaction process of the desulfurization slurry is facilitated; meanwhile, due to the pressure effect of the oxidation wind, the desulfurization slurry falling to the height of the oxidation wind input branch pipe can independently rotate and flow in advance under the pressure effect of the oxidation wind, and due to the different directional arrangement of the side oxidation wind input hole and the side slurry suction hole, the rotation direction of the desulfurization slurry at the height of the oxidation wind input branch pipe is the same as that of the desulfurization slurry at the height of the slurry drainage pipe, so that the final rotation speed of the desulfurization slurry at the bottom of the tower body is improved, the desulfurization slurry anti-sedimentation is more facilitated, and the desulfurization slurry conveying and discharging circulation is more facilitated.
4. The desulfurization slurry can automatically rotate to realize autonomous stirring under the action of the air outlet pressure of the oxidation air and the suction force of the slurry circulating pump, however, the particles in the slurry have centripetal force which can cause the particles to be accumulated at the central position.
5. According to the invention, the plurality of circumferentially distributed slurry guide plates are arranged on the inner wall of the tower body, under the action of the slurry guide plates, the desulfurization slurry which is not independently rotated above the annular oxidation wind input pipe flows towards the center of the tower body under the action of the slurry guide plates, and the desulfurization slurry collides with each other at the center, so that the purpose of mutual mixed flow stirring is achieved, particles in the desulfurization slurry are uniformly distributed, the concentration of the inner slurry and the outer slurry is kept consistent, and the stable operation of a desulfurization process is facilitated.
6. The device is of an umbrella-shaped framework distribution pipe network structure, is stable and firm, and realizes self-stirring, precipitation prevention and blockage-free circulating conveying of desulfurization slurry under the condition of no power equipment.
Drawings
FIG. 1 is a schematic diagram of a stirring-free anti-settling device for desulfurization slurry according to an embodiment of the present invention;
FIG. 2 is a top view of a desulfurization slurry non-stirring anti-settling device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a part of a non-stirring anti-settling device for desulfurization slurry according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an annular slurry output pipe in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of an annular slurry outlet pipe of a non-agitated anti-settling device for desulphurized slurry according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 3;
FIG. 7 is a schematic view of a slurry drainage tube in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a centripetal precipitation preventing fixed column in a desulfurization slurry stirring-free precipitation preventing device according to an embodiment of the present invention;
FIG. 9 is an assembly drawing of an annular oxidized wind input pipe and an oxidized wind input branch pipe in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention;
FIG. 10 is another view of FIG. 9;
FIG. 11 is a schematic structural view of an oxidized wind input branch pipe in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention;
FIG. 12 is an assembly drawing of a support column and an oxidized wind inlet manifold in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention;
fig. 13 is an assembly diagram of a support column and a slurry drainage tube in a desulfurization slurry stirring-free anti-settling device according to an embodiment of the present invention.
Reference numerals: 1. a tower body; 2. a slurry circulation pump; 3. a slurry inlet pipe; 4. an annular slurry output pipe; 5. a slurry drainage tube; 501. a side slurry suction hole; 502. an end slurry suction hole; 6. a support tube; 7. a flange of the upper pipe section; 8. centripetal precipitation preventing fixed column; 801. a lower butt joint hole; 802. an upper butt joint hole; 803. installing an entrance; 9. an annular oxidation wind input pipe; 10. oxidized wind input header pipe; 11. an oxidation wind input branch pipe; 1101. a side oxidation wind input hole; 1102. an end oxidation wind input hole; 1103. a pulp discharging hole; 12. a support column; 13. an adjustable tie rod; 14. slurry guide plates; 15. an upper hoop member; 16. a lower hoop member; 17. an upper hook body; 18. a lower hook body; 19. a slurry outlet pipe; 20. and a lower pipe section flange.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-3, this embodiment provides a desulfurization slurry stirring-free anti-settling device, which comprises a tower body 1, a plurality of slurry circulating pumps 2, an annular slurry output pipe 4, a plurality of slurry drainage pieces, and further comprises an anti-centripetal settling fixing column 8, an oxidation wind input main pipe 10, an annular oxidation wind input pipe 9, a plurality of oxidation wind input branch pipes 11, a plurality of support columns 12, a plurality of adjustable pull rods 13 and a plurality of slurry guide plates 14.
In the embodiment, the tower body 1 adopts an existing absorption tower or AFT tower for wet flue gas desulfurization in the field, the tower body 1 has large volume and large inner diameter, and the inner diameter of the large tower body 1 is more than 20 meters.
The slurry circulation pumps 2 are also slurry circulation pumps 2 for wet flue gas desulfurization existing in the field. The installation position of the existing slurry circulating pump 2 is at one side of the tower body 1, a plurality of slurry circulating pumps 2 are arranged side by side, an inlet of the slurry circulating pump 2 is connected with a slurry inlet pipe 3 and an outlet of the slurry circulating pump is connected with a slurry outlet pipe 19, one end of the slurry inlet pipe 3, far away from the slurry circulating pump 2, extends into the inner bottom of the tower body 1, and one end of the slurry outlet pipe 19, far away from the slurry circulating pump 2, extends into spray layers with different heights inside the tower body 1.
The annular slurry output pipe 4 is positioned at the inner bottom of the tower body 1 and is coaxially arranged with the tower body 1. In this embodiment, the annular slurry outlet pipe 4 is located at a position of 2/3 of the diameter of the tower body 1. In order to facilitate production, manufacture, transportation, field installation and later maintenance and repair, with reference to fig. 4 and 5, the annular slurry output pipe 4 adopts a segmented structure, and each segment is connected by adopting a fixed flange in a sealing fit manner. The slurry inlet pipes 3 are all positioned at one side of the annular slurry outlet pipe 4 and are all communicated with the annular slurry outlet pipe 4. Referring to fig. 6, a plurality of support pipes 6 are welded at the holes of the plurality of holes formed below the annular slurry output pipe 4, the plurality of support pipes 6 are uniformly distributed circumferentially, a circular fixing bottom plate is installed at the bottom of the support pipe 6, and the circular fixing bottom plate is installed at the bottom of the tower body 1 through foundation bolts, so that the installation of the annular slurry output pipe 4 inside the tower body 1 is realized. A plurality of holes are formed in the upper position of the annular slurry output pipe 4 at equal intervals, a plurality of upper pipe section flanges 7 are welded at the positions of the holes, and the upper pipe section flanges 7 are uniformly distributed in circumference.
The slurry drainage pieces are uniformly distributed on the circumference, and the circumference where the slurry drainage pieces are located is coaxial with the tower body 1. Each slurry drainage piece comprises two slurry drainage pipes 5, the two slurry drainage pipes 5 are radially arranged along the tower body 1, the two slurry drainage pipes 5 are respectively positioned on the upper side and the lower side of the annular slurry output pipe 4, and a fan shape is formed between any two adjacent slurry drainage pipes 5 positioned above the annular slurry output pipe 4 and any two adjacent slurry drainage pipes 5 positioned below the annular slurry output pipe 4. The slurry drainage pipes 5 positioned below the annular slurry output pipe 4 are respectively arranged in one-to-one correspondence with the support pipes 6, and the slurry drainage pipes 5 positioned below the annular slurry output pipe 4 are connected with the corresponding support pipes 6, so that the slurry drainage pipes 5 positioned below the annular slurry output pipe 4 are communicated with the annular slurry output pipe 4. In order not to damage the whole firm structure of the support tube 6, the slurry drainage tube 5 below the annular slurry output tube 4 is manufactured in two sections, and is respectively installed and fixed on two sides of the support tube 6 section, after installation, the height of the slurry drainage tube 5 below the annular slurry output tube 4 is the height of the flange edge, and the closer to the ground is, the more beneficial to preventing slurry from precipitating. The slurry drainage pipes 5 above the annular slurry output pipe 4 are respectively arranged in one-to-one correspondence with the upper pipe section flanges 7, and the slurry drainage pipes 5 above the annular slurry output pipe 4 are respectively connected and fixed with the corresponding upper pipe section flanges 7, so that the slurry drainage pipes 5 above the annular slurry output pipe 4 are communicated with the annular slurry output pipe 4. Referring to fig. 7, two slurry drainage pipes 5 of each slurry drainage member have a plurality of end slurry suction holes 502 formed in an end face of one end facing the inner wall of the tower body 1, and a plurality of side slurry suction holes 501 are formed in the same side of each slurry drainage pipe 5 of each slurry drainage member, and side slurry suction holes 501 are formed in opposite sides of the slurry drainage pipes 5 of any two adjacent slurry drainage members.
Through the above structure setting, when the slurry circulating pump 2 operates, the desulfurization slurry at the bottom of the tower body 1 can enter the slurry drainage tube 5 from the side slurry suction hole 501 and the end slurry suction hole 502, and then enter the annular slurry output tube 4, and the slurry circulating pump 2 lifts the desulfurization slurry to spray layers with different heights through the slurry outlet tube 19, and the slurry is atomized and sprayed under the action of the spiral nozzle to carry out chemical reaction with the mixed contact of flue gas, so that the effect of flue gas desulfurization is achieved, the desulfurization slurry sprayed drops downwards, and the slurry is reciprocally circulated in this way to carry out chemical reaction with the flue gas. Through the setting of a plurality of thick liquid drainage pieces for the desulfurization thick liquid in each corner of tower body 1 bottom can be sucked to thick liquid circulating pump 2, each thick liquid drainage tube 5 sets up side thick liquid suction hole 501 in same direction, same angle, make thick liquid circulating pump 2 when sucking desulfurization thick liquid, because the suction of thick liquid circulating pump 2, make the desulfurization thick liquid in tower body 1 bottom independently rotate the flow and by unifying horizontal tangential suction to go away, thereby form a spiral circle of independently rotating in tower body 1 bottom, make desulfurization thick liquid prevent the precipitation of particulate matter in the whirl process, the particulate matter that falls from the top can be the spiral orbit and float, guarantee that the particulate matter that falls is in the suspended motion always, no settling time, thereby the descending path of extension particulate matter, extension time, make the suspended particulate matter in the desulfurization thick liquid that falls to each corner of tower body 1 bottom can be in time pumped away by thick liquid circulating pump 2, the normal circulation transportation of desulfurization thick liquid has been ensured. The plurality of side slurry suction holes 501 on each slurry drainage tube 5 are distributed in a plurality of rows, the plurality of side slurry suction holes 501 of each row are arranged at intervals along the axial direction of the slurry drainage tube 5, and the plurality of side slurry suction holes 501 of any two adjacent rows are staggered, so that desulfurization slurry in different directions can be sucked away. Further, the plurality of side slurry suction holes 501 on each slurry drainage tube 5 are distributed in a region which rotates downwards by 60 degrees by taking the horizontal plane of the central axis of the slurry drainage tube 5 as a starting point, so that the particles on the bottom surface of the tower body 1 can be lifted upwards by rotating upwards under the action of the suction force of the slurry circulating pump, thereby damaging the downward sedimentation trend of the particles and thoroughly preventing the deposition of the particles.
It should be noted that, in this embodiment, the inner hole cross-sectional area of the annular slurry output pipe 4 is larger than the sum of the inner hole cross-sectional areas of the plurality of slurry inlet pipes 3, and the sum of the cross-sectional areas of all the side slurry suction holes 501 and all the end slurry suction holes 502 is also larger than the sum of the inner hole cross-sectional areas of the plurality of slurry inlet pipes 3, so as to avoid influencing the technical index of the cavitation allowance of the slurry circulation pump 2, and simultaneously, the apertures of the side slurry suction holes 501 and the end slurry suction holes 502 are not larger than 25mm to play a role in filtering, so as to avoid the damage of the slurry circulation pump 2 and the nozzle blockage of the upper layer sprayer in the tower caused by the larger foreign matters entering the slurry circulation pump 2.
The centripetal sedimentation prevention fixed column 8 is vertically arranged inside the tower body 1 and is coaxially arranged with the tower body 1. In this embodiment, the centripetal sedimentation prevention fixing column 8 is hollow, and the bottom is connected with a circular plate and the circular plate is fixed at the bottom of the tower body 1 through foundation bolts. In this embodiment, the anti-centripetal precipitation fixing column 8 has a larger volume, so as to facilitate production, manufacture, transportation, field installation and later maintenance and repair, the anti-centripetal precipitation fixing column 8 can be divided into an upper section and a lower section, which are manufactured in sections, and the upper section and the lower section are connected through flange sealing fit, so that no slurry enters the anti-centripetal precipitation fixing column 8 in the operation process. According to the embodiment, the centripetal sedimentation prevention fixed column 8 is arranged in the middle of the tower body 1, the top of the centripetal sedimentation prevention fixed column 8 is of a cone structure, and desulfurization slurry falling from a high place falls on the surface of the top end of the centripetal sedimentation prevention fixed column 8 and can freely slide down, so that slurry particles are prevented from sedimentation, aggregation and agglomeration.
In this embodiment, in combination with fig. 8, the lower butt joint hole 801 is formed at the bottom of the centripetal precipitation preventing fixing column 8 and the corresponding position of each slurry drainage tube 5, the lower through hole communicated with the inside of the centripetal precipitation preventing fixing column 8 is formed at the bottom of the lower butt joint hole 801, the countersunk head screw hole is formed at one end of the slurry drainage tube 5, which is close to the centripetal precipitation preventing fixing column 8, and inserted into the corresponding lower butt joint hole 801, the countersunk head screw hole is correspondingly communicated with the lower through hole, and the slurry drainage tube 5 is fixed on the centripetal precipitation preventing fixing column 8 by using bolts from the inside of the centripetal precipitation preventing fixing column 8, so that the installation stability of the slurry drainage tube 5 is improved, and the overall structure is firmer. For convenience of personnel to install the slurry drainage tube 5, an installation access 803 for personnel to enter and exit the centripetal precipitation prevention fixed column 8 is formed in the bottom of the centripetal precipitation prevention fixed column 8, and after the installation is finished, the installation access 803 is required to be sealed by a sealing door plate, so that desulfurization slurry is prevented from entering the centripetal precipitation prevention fixed column 8.
The annular oxidation wind input pipe 9 is coaxially arranged in the tower body 1 and is positioned above the annular slurry output pipe 4. In order to facilitate production, manufacture, transportation, field installation and later maintenance and repair, the annular oxidation wind input pipe 9 also adopts a segmented structure with reference to fig. 9 and 10, and each segment is connected by adopting a fixed flange in a sealing fit manner. A plurality of holes are formed in the lower position of the annular oxidation wind input pipe 9 at equal intervals, a plurality of lower pipe section flanges 20 are welded at the positions of the holes, and the lower pipe section flanges are uniformly distributed in the circumference. The oxidation wind input main pipe 10 has one end communicated with the annular oxidation wind input pipe 9 and the other end extending out of the tower body 1 and communicated with a Roots blower (not shown) arranged outside the tower body 1.
The plurality of oxidation wind input branch pipes 11 are all located annular oxidation wind input pipe 9 below position, and a plurality of oxidation wind input branch pipes 11 are circumference evenly distributed and a plurality of oxidation wind input branch pipes 11 place circumference coaxial with tower body 1, and oxidation wind input branch pipes 11 radially set up along tower body 1 and form the fan-shaped between arbitrary adjacent two oxidation wind input branch pipes 11. The plurality of oxidation wind input branch pipes 11 are respectively arranged in one-to-one correspondence with the plurality of lower pipe section flanges 20, and the oxidation wind input branch pipes 11 are fixedly connected with the corresponding lower pipe section flanges 20, so that the oxidation wind input branch pipes 11 are communicated with the annular oxidation wind input pipes 9. Referring to fig. 11, an end face of the oxidation wind input branch pipe 11 facing the inner wall of the tower body 1 is provided with a plurality of end oxidation wind input holes 1102, one side of the oxidation wind input branch pipe 11 is provided with a plurality of side oxidation wind input holes 1101, and two opposite sides of any adjacent oxidation wind input branch pipes 11 are not provided with side oxidation wind input holes 1101 at the same time. In this embodiment, the plurality of oxidation wind input branch pipes 11 are respectively arranged in one-to-one correspondence with the plurality of slurry drainage pieces, the oxidation wind input branch pipes 11 and the two slurry drainage pipes 5 of the corresponding slurry drainage pieces are located in the same vertical plane, and the side oxidation wind input holes 1101 of the oxidation wind input branch pipes 11 and the side slurry suction holes 501 of the corresponding slurry drainage pipes 5 are not located at the same side.
Through the structure, high-pressure oxidation wind generated by the Roots blower enters the annular oxidation wind input pipe 9 through the oxidation wind input main pipe 10 and then enters the oxidation wind input branch pipes 11 and is input into the desulfurization slurry through the side oxidation wind input holes 1101 and the end oxidation wind input holes 1102, so that the oxidation wind input is more finely distributed and homogenized, and the oxidation reaction process of the desulfurization slurry is facilitated; meanwhile, due to the pressure effect of the oxidation wind, the desulfurization slurry falling to the height of the oxidation wind input branch pipe 11 can independently rotate and flow in advance under the pressure effect of the oxidation wind, and due to the arrangement of the different directions of the side oxidation wind input hole 1101 and the side slurry suction hole 501, the rotation direction of the desulfurization slurry at the height of the oxidation wind input branch pipe 11 is the same as that of the desulfurization slurry at the height of the slurry drainage pipe 5, so that the final rotation speed of the desulfurization slurry at the bottom of the tower body 1 is improved, the desulfurization slurry anti-sedimentation is more facilitated, and the desulfurization slurry conveying and discharging circulation is more facilitated. The plurality of side oxidation wind input holes 1101 of each oxidation wind input branch pipe 11 are distributed in a plurality of rows, the plurality of side oxidation wind input holes 1101 of each row are arranged at intervals along the axial direction of the oxidation wind input branch pipe 11, and the plurality of side oxidation wind input holes 1101 of any two adjacent rows are staggered, so that high-pressure oxidation wind can be conveyed to different directions in the tower body 1; meanwhile, a plurality of side oxidation wind input holes 1101 on each oxidation wind input branch pipe 11 are distributed in a region which rotates downwards by 60 degrees by taking the horizontal plane where the central axis of the oxidation wind input branch pipe 11 is located as a starting point, so that on one hand, particles falling from the upper side can be effectively prevented from entering the side oxidation wind input holes 1101, on the other hand, the inclined downward side oxidation wind input holes 1101 can convey high-pressure oxidation wind to the deeper position of the tower body 1, oxidation wind is maximally fed, oxidation wind can be fully mixed with desulfurization slurry, the oxygen content of air in the desulfurization slurry is more uniform, oxidation reaction is more facilitated, and the desulfurization effect is improved.
Because the side oxidation wind input hole 1101 and the end oxidation wind input hole 1102 are formed in the oxidation wind input branch pipe 11, under the condition that the Roots blower does not operate, a small amount of desulfurization slurry can inevitably enter the oxidation wind input branch pipe 11 from the side oxidation wind input hole 1101 and the end oxidation wind input hole 1102, and referring to fig. 11, in this embodiment, a slurry discharge hole 1103 is formed in the bottom of the end of the oxidation wind input branch pipe 11, which is close to the inner wall of the tower body 1, and by the arrangement of the slurry discharge hole 1103, when the desulfurization slurry level in the tower body 1 is lower than that of the oxidation wind input branch pipe 11, the desulfurization slurry in the oxidation wind input branch pipe 11 can be completely discharged from the slurry discharge hole 1103, so that the cleanliness of the oxidation wind input branch pipe 11 is maintained.
In this embodiment, the sum of the cross sectional areas of the side oxidation wind input holes 1101 and the end oxidation wind input holes 1102 of the oxidation wind input branch pipes 11 is not smaller than the cross sectional area of the oxidation wind input main pipe 10, so that no additional conveying resistance can be ensured for the high-pressure oxidation wind output generated by the Roots blower, and the running safety of the Roots blower can be ensured.
In order to facilitate the installation and fixation of the oxidation wind input branch pipe 11 and the annular oxidation wind input pipe 9, a support column 12 is arranged between the corresponding oxidation wind input branch pipe 11 and the slurry drainage piece, the top end of the support column 12 is provided with an upper hoop member 15 fixedly connected with the oxidation wind input branch pipe 11, and the bottom end of the support column 12 is provided with a lower hoop member 16 fixedly connected with the slurry drainage pipe 5 above the annular slurry output pipe 4. In order to further improve the installation stability of the oxidation wind input branch pipe 11 and the annular oxidation wind input pipe 9, an adjustable pull rod 13 is arranged between any two adjacent support columns 12. In this embodiment, the length of the adjustable pull rod 13 is adjustable, and in the prior art, the middle part of the adjustable pull rod 13 is a sleeve with internal threads, two ends are rod bodies connected with the threads of the sleeve in a matching manner, one of the rod body end parts is a forward screw thread, the other rod body end part is a reverse screw thread, and the two rod bodies can be driven to approach each other to shorten the length of the adjustable pull rod 13 by rotating the sleeve in the forward direction, or the two rod bodies are driven to be far away from each other by rotating the sleeve in the reverse direction to increase the length of the adjustable pull rod 13. Any two adjacent adjustable pull rods 13 are distributed in a V shape, the top ends of the adjustable pull rods 13 are movably matched and connected with an upper hoop member 15 through an upper hook body 17, and the bottom ends of the adjustable pull rods are movably matched and connected with a lower hoop member 16 through a lower hook body 18. The upper part of the oxidation wind input branch pipe 11 and the annular oxidation wind input pipe 9 are fixed with the lower part of the annular slurry output pipe 4 and the slurry drainage pipe 5 into a whole through the zip-lock of the adjustable pull rods 13, so that the structure is firm and firm.
Further, in this embodiment, the positions of the anti-centripetal precipitation fixing columns 8 corresponding to the positions of the oxidation wind input branch pipes 11 are provided with upper butt joint holes 802, the bottoms of the upper butt joint holes 802 are provided with upper through holes communicated with the interiors of the anti-centripetal precipitation fixing columns 8, one ends of the oxidation wind input branch pipes 11, which are close to the anti-centripetal precipitation fixing columns 8, are provided with upper countersunk head screw holes and inserted into the corresponding upper butt joint holes 802, the upper countersunk head screw holes are correspondingly communicated with the upper through holes, and the oxidation wind input branch pipes 11 are fixed on the anti-centripetal precipitation fixing columns 8 by bolts from the interiors of the anti-centripetal precipitation fixing columns 8, so that the installation stability of the oxidation wind input branch pipes 11 is improved, and the overall structure is firmer.
In this embodiment, desulfurization thick liquid is under the effect of oxidation wind air-out pressure and the suction force effect of thick liquid circulating pump 2, can independently rotate and realize independently stirring, but the particulate matter in the thick liquid has centripetal force, and centripetal force can make the particulate matter pile up in central point put, and this embodiment just occupies central pile up the position through setting up prevent centripetal precipitation fixed column 8, lets desulfurization thick liquid follow prevent centripetal precipitation fixed column peripheral rotation, and thick liquid can be timely pumped away through the thick liquid suction port that is close to, in order to ensure prevent centripetal precipitation fixed column 8 can play and prevent piling up the effect, prevent centripetal precipitation fixed column 8 external diameter is not less than 1/10 of tower body 1 internal diameter.
The desulfurization thick liquid of annular oxidation wind input tube 9 position department can independently rotate under the effect of oxidation wind air-out pressure, and the desulfurization thick liquid of annular oxidation wind input tube 9 top also can be passively rotated, in order to prevent the rotation of desulfurization thick liquid of annular oxidation wind input tube 9 top, install a plurality of thick liquid guide plates 14 on the tower body 1 inner wall of annular oxidation wind input tube 9 top, a plurality of thick liquid guide plates 14 are circumference evenly distributed and a plurality of thick liquid guide plates 14 place circumference and tower body 1 coaxial, the face of facing flow of a plurality of thick liquid guide plates 14 is the arcwall face. Thus, the desulfurization slurry which is not independently rotated above the annular oxidation wind input pipe 9 can collide with the cambered surface of the slurry guide plate 14, and flows towards the center of the tower body 1 under the guide of the cambered surface of the slurry guide plate 14, the desulfurization slurry collides with each other in the center, the purpose of mutual mixed flow stirring is achieved, the particles in the desulfurization slurry are uniformly distributed, the concentration of the upper slurry and the lower slurry is kept consistent, and the stable operation of the desulfurization process is facilitated.
In summary, the non-stirring anti-sedimentation device for the desulfurization slurry of the invention overturns the processes of a side-entering stirrer and a top-loading stirrer, and fully utilizes the suction force of a slurry circulating pump 2 and the pressure of an oxidized air outlet to take potential kinetic energy as the rotation driving force of the non-powered stirring device to realize the stirring of the slurry by the technical transformation of the non-stirring anti-sedimentation device for the desulfurization slurry of the invention to the slurry stirring modes in a desulfurization absorption tower and an AFT tower, and fully utilizes the existing equipment process conditions on site under the condition of not affecting the main structures of the desulfurization absorption tower and the AFT tower; the technical transformation of the invention realizes the beneficial effects of energy conservation, environmental protection, no energy consumption, no mechanical rotary abrasion, no operation maintenance and the like, and can realize the following economic benefits:
1. the equipment cost of a single side-entering stirrer is different from 15 to 30 ten thousand yuan, and the expensive equipment cost of millions of yuan can be saved.
2. The running loss of a single side-entering stirrer is that the running cost of the stirrer shaft, the stirring impeller, the mechanical seal, the gear of the reducing motor, the bearing, the lubricating oil and the like is between 5 and 10 ten thousand yuan, and each unit can save the expensive running cost of a plurality of side-entering stirrers by more than 50 ten thousand yuan each year.
3. The power of the matched motor of the single side-entering stirrer is between 22 KW and 55KW, the single side-entering stirrer runs continuously for 24 hours, and the single set of desulfurization device can save millions of yuan in one year.
4. The prior single set of desulfurization device is provided with three circulating pumps 2 and four circulating pumps 2, the inlet of each circulating pump 2 is provided with a filter screen, the unit price of the filter screen is 5-15 ten thousand yuan, the side slurry drainage holes 501 and the end slurry drainage holes 502 can play a role in filtering, larger particles can be effectively prevented from entering the slurry circulating pump 2, the filter screen is not required to be arranged at the inlet of the slurry circulating pump 2, the cost is saved, and the equipment cost and the later abrasion replacement cost of the filter screen are saved by more than 20 ten thousand yuan each year by the single set of desulfurization device.
5. Through the transportation of annular oxidation wind input tube 9, the oxygen that gets into mixes with desulfurization thick liquid abundant, and the oxygen content is more even in the desulfurization thick liquid, is favorable to oxidation more, and thick liquid temperature is balanced, has important meaning to improving desulfurization effect.
6. The invention overturns the operation process of wet desulfurization slurry, thoroughly eliminates the problem of leakage of mechanical seal, avoids the occurrence of leakage accident of desulfurization slurry, eliminates the operation noise of a side stirrer, and has important significance for improving the field environment and safety production.
It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The utility model provides a desulfurization thick liquid does not have stirring and prevents sediment device, includes tower body (1) and a plurality of thick liquid circulating pump (2) of setting outside tower body (1), and the access connection of thick liquid circulating pump (2) has into inside thick liquid pipe (3) of entering tower body (1), its characterized in that still includes:
An annular slurry output pipe (4) which is arranged at the bottom of the tower body (1); the slurry inlet pipes (3) are communicated with the annular slurry output pipe (4); a plurality of support pipes (6) are communicated below the annular slurry output pipe (4), the plurality of support pipes (6) are uniformly distributed circumferentially, the bottom of the support pipe (6) is arranged at the bottom of the tower body (1), a plurality of upper pipe section flanges (7) are communicated above the annular slurry output pipe (4), and the plurality of upper pipe section flanges (7) are uniformly distributed circumferentially;
The slurry drainage pieces are circumferentially distributed, one ends of the slurry drainage pieces are communicated with the annular slurry output pipe (4) and the other ends of the slurry drainage pieces are directed to the center of the tower body (1), one side of each slurry drainage piece is provided with a plurality of side slurry suction holes (501), one opposite side of any two adjacent slurry drainage pieces is not provided with a side slurry suction hole (501), and one end face of each slurry drainage piece, facing the side wall of the tower body (1), is provided with a plurality of end slurry suction holes (502); the slurry drainage pieces are respectively arranged in one-to-one correspondence with the support pipes (6) and the upper pipe section flanges (7); the slurry drainage piece comprises two slurry drainage pipes (5), wherein the two slurry drainage pipes (5) are respectively communicated with a corresponding support pipe (6) and an upper pipe section flange (7), a plurality of side slurry suction holes (501) are formed in the same side of the two slurry drainage pipes (5), and a plurality of end slurry suction holes (502) are formed in the end face of one end of each of the two slurry drainage pipes (5) facing the side wall of the tower body (1); on each slurry drainage tube (5), a plurality of side slurry suction holes (501) are distributed in a plurality of rows, the plurality of side slurry suction holes (501) of each row are arranged at intervals in the axial direction of the slurry drainage tube (5), and the plurality of side slurry suction holes (501) of any two adjacent rows are staggered; in each slurry drainage tube (5), a plurality of side slurry suction holes (501) are formed in a region which rotates downwards by 60-90 degrees by taking the horizontal plane of the central axis of the slurry drainage tube (5) as a starting point;
the centripetal sedimentation prevention fixing column (8) is vertically arranged in the tower body (1) and is coaxially arranged with the tower body (1), the bottom end of the centripetal sedimentation prevention fixing column is fixed at the bottom end of the tower body (1), and the top end of the centripetal sedimentation prevention fixing column is conical; one end of each slurry drainage piece far away from the annular output pipe is fixed on the centripetal precipitation prevention fixed column (8);
The annular oxidation wind input pipe (9) is coaxially arranged in the tower body (1), is positioned above the annular slurry output pipe, is communicated with a plurality of lower pipe section flanges at the bottom and is circumferentially distributed;
the device comprises a plurality of oxidation wind input branch pipes (11), wherein the oxidation wind input branch pipes (11) are circumferentially distributed, the oxidation wind input branch pipes (11) are respectively communicated with a plurality of lower pipe section flanges, one ends of the oxidation wind input branch pipes (11) far away from the lower pipe section flanges are all directed to the center of the tower body (1), a plurality of side oxidation wind input holes (1101) are formed in one side of each oxidation wind input branch pipe (11), side oxidation wind input holes (1101) are formed in the opposite side of any two adjacent oxidation wind input branch pipes (11), the side oxidation wind input holes (1101) are formed in the opposite side of each oxidation wind input branch pipe (11), and a plurality of end oxidation wind input holes (1102) are formed in the end face of one end of each oxidation wind input branch pipe (11) facing the side wall of the tower body (1); the oxidation wind input branch pipes (11) are respectively arranged in one-to-one correspondence with the slurry drainage pieces, the oxidation wind input branch pipes (11) and the slurry drainage pieces which correspond to each other are positioned in the same vertical plane, and a side oxidation wind input hole (1101) is formed in one side, away from the corresponding slurry drainage piece, of the oxidation wind input branch pipe (11) where the side slurry suction hole (501) is formed; on each oxidation wind input branch pipe (11), a plurality of side oxidation wind input holes (1101) are distributed in a plurality of rows, and the plurality of side oxidation wind input holes (1101) of each row are axially arranged at intervals on the oxidation wind input branch pipe (11) and the plurality of side oxidation wind input holes (1101) of any two adjacent rows are staggered; in each oxidation wind input branch pipe (11), a plurality of side oxidation wind input holes (1101) are formed in a region which takes the horizontal plane of the central axis of the oxidation wind input branch pipe (11) as a starting point and rotates downwards by 60-90 degrees;
an oxidation wind input main pipe (10), one end of which is communicated with the annular oxidation wind input pipe (9) and the other end of which extends out of the tower body (1); and
The fan is connected with the other end of the oxidation wind input main pipe (10), and conveys high-pressure oxidation wind into the oxidation wind input branch pipes (11) through the oxidation wind input main pipe (10) and the annular oxidation wind input pipe (9), and the high-pressure oxidation wind is sprayed out from the side oxidation wind input holes (1101) and the end oxidation wind input holes (1102).
2. The desulfurization slurry stirring-free anti-settling device according to claim 1, wherein the sum of cross-sectional areas of the side slurry suction holes (501) and the end slurry suction holes (502) of the plurality of slurry guide members is larger than the sum of cross-sectional areas of the plurality of slurry inlet pipes (3).
3. The desulfurization slurry stirring-free anti-settling device according to claim 1, characterized in that the sum of cross-sectional areas of side oxidation wind input holes (1101) and end oxidation wind input holes (1102) of the plurality of oxidation wind input branch pipes (11) is not smaller than the cross-sectional area of oxidation wind input header pipe (10);
And/or, a slurry discharging hole (1103) is formed at the bottom of one end of each oxidation wind input branch pipe (11) close to the inner wall of the tower body (1).
4. The desulfurization slurry non-agitation anti-settling device according to claim 1, characterized in that the desulfurization slurry non-agitation anti-settling device further comprises:
A plurality of vertically arranged support columns (12); a support column (12) is arranged between the corresponding oxidation wind input branch pipe (11) and the slurry drainage piece, the top end of the support column (12) is connected with the oxidation wind input branch pipe (11) through an upper hoop piece (15), and the bottom end of the support column is connected with the slurry drainage piece through a lower hoop piece (16); and
A plurality of adjustable tie rods (13); an adjustable pull rod (13) is arranged between any two adjacent support columns (12), the two adjacent adjustable pull rods (13) are distributed in a V shape, one end of each adjustable pull rod (13) is movably matched and connected with the upper hoop (15) through an upper hook body (17), and the other end of each adjustable pull rod is movably matched and connected with the lower hoop (16) through a lower hook body (18).
5. The desulfurization slurry non-agitation anti-settling device according to claim 1, characterized in that the desulfurization slurry non-agitation anti-settling device further comprises:
The slurry guide plates (14) are arranged on the inner wall of the tower body (1), the slurry guide plates (14) are circumferentially distributed, the height of each slurry guide plate (14) is higher than that of the annular oxidation wind input branch pipe (11), and the flow facing surfaces of the slurry guide plates (14) are arc-shaped surfaces.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201389404Y (en) * | 2009-04-02 | 2010-01-27 | 中环（中国）工程有限公司 | Control device capable of stabilizing liquid level of absorption tower |
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