CN210114901U - Demisting and whitening system for flue gas after catalytic cracking desulfurization - Google Patents
Demisting and whitening system for flue gas after catalytic cracking desulfurization Download PDFInfo
- Publication number
- CN210114901U CN210114901U CN201920200962.XU CN201920200962U CN210114901U CN 210114901 U CN210114901 U CN 210114901U CN 201920200962 U CN201920200962 U CN 201920200962U CN 210114901 U CN210114901 U CN 210114901U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- saving
- module
- gas water
- cyclone separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 117
- 239000003546 flue gas Substances 0.000 title claims abstract description 117
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 24
- 230000023556 desulfurization Effects 0.000 title claims abstract description 24
- 238000004523 catalytic cracking Methods 0.000 title claims abstract description 13
- 230000002087 whitening effect Effects 0.000 title claims abstract description 9
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 29
- 229910021529 ammonia Inorganic materials 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 229910001039 duplex stainless steel Inorganic materials 0.000 claims description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 9
- 239000000428 dust Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a demisting and whitening system for flue gas after catalytic cracking desulfurization, which comprises a flue gas water-saving demisting module, a refrigerating system and a cyclone separator, wherein the flue gas water-saving demisting module and the cyclone separator are both arranged at the upper end of the inner wall of a desulfurizing tower, and the cyclone separator is positioned above the flue gas water-saving demisting module; and two ends of the smoke water-saving demisting module are respectively communicated with the refrigerating system. The utility model discloses a defogging white system that disappears can advance into flue gas water conservation defogging module to the flue gas through the desulfurizing tower, reduces the flue gas moisture capacity, and the flue gas through the hydrofuge is disappeared white again and is handled, and the flue gas humidity that makes the desulfurizing tower discharge is little to the white rain that the desulfurizing tower discharged has been eliminated, has reduced environmental pollution.
Description
Technical Field
The utility model relates to a heavy oil catalytic cracking device regeneration flue gas's processing, concretely relates to defogging white system that disappears of flue gas behind catalytic cracking desulfurization.
Background
At present, during the operation of a heavy oil catalytic cracking device, smoke at the outlet of a chimney has an obvious smoke plume phenomenon, so that serious visual pollution is caused, and the smoke carries more soluble salt and other pollutants, so that the environment is also seriously polluted. Therefore, in order to reduce the adverse social effect of the smoke plume phenomenon on the surrounding people, reducing the content of soluble salt and other pollutants carried in the smoke becomes an important link of the current heavy oil catalytic cracking production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide a defogging white system that disappears of flue gas behind catalytic cracking desulfurization.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a demisting and whitening system for flue gas subjected to catalytic cracking desulfurization comprises a flue gas water-saving demisting module, a refrigerating system and a cyclone separator, wherein the flue gas water-saving demisting module and the cyclone separator are both arranged at the upper end of the inner wall of a desulfurization tower, and the cyclone separator is positioned above the flue gas water-saving demisting module; and two ends of the smoke water-saving demisting module are respectively communicated with the refrigerating system.
The utility model has the advantages that: the utility model discloses a defogging and white elimination system, overlap the arrangement from top to bottom with flue gas water conservation defogging module and cyclone, because the flue gas temperature of passing through desulfurization in the desulfurizing tower is about 45-50 ℃, the flue gas comes out from the desulfurizing tower, moves from bottom to top, the flue gas passes through flue gas water conservation defogging module earlier and is cooled down by the cooling liquid condensation 5-10 ℃, can effectively reduce flue gas moisture content, flow through cyclone again, cyclone separates down the granule or the liquid drop that the particle size is big, can realize the white elimination; that is to say, the system of the utility model cools the flue gas after moisture removal, achieves the purpose of reducing the saturation of the flue gas through the means of temperature reduction, and then makes the flue gas separate from the saturation through the cyclone separator, thereby eliminating the white rain and smoke discharged by the desulfurizing tower, and other pollutants in the flue gas can fall down along with the condensed water in the process of cooling the flue gas, thereby reducing the environmental pollution; additionally, the utility model discloses a defogging white system that disappears adopts refrigerating system to carry out the defogging, and area reduces greatly, has realized the miniaturization of a whole set of system, lightweight design, and after a whole set of system lightweight, can reach the reduction resistance in the overlapping arrangement of desulfurization top of the tower exit of discharging fume, reduce the newly-increased energy consumption.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, a smoke inlet pipeline of the desulfurizing tower is positioned below the smoke water-saving demisting module, and a cooler is installed on the smoke inlet pipeline.
The beneficial effect of adopting the further scheme is that: the setting of cooler can be cooled down in advance to the flue gas that gets into in the desulfurizing tower on the one hand, and on the other hand has also increased the route of flue gas, makes the defogging effect of flue gas better.
Further, the flue gas water-saving demisting module adopts a full-welding plate type heat exchanger.
The beneficial effect of adopting the further scheme is that: the flue gas water-saving demisting module adopts an all-welded plate type structure, has high heat transfer efficiency, is not easy to deposit dust, is corrosion-resistant and wear-resistant, and has compact equipment structure, small occupied space, light weight and convenient installation and implementation; the smoke stroke is short, the flowing field is uniform and anti-dust deposition is realized, the equipment reliability is high, and the overhaul and maintenance amount is small; the problems of easy corrosion, easy dust accumulation, large pressure drop, large installation space and the like of the traditional demister are solved.
Further, the heat transfer plate of the all-welded plate heat exchanger is made of 2205 duplex stainless steel.
The beneficial effect of adopting the further scheme is that: the heat transfer plate is made of 2205 duplex stainless steel, so that the heat transfer plate is high in heat transfer efficiency, difficult to accumulate dust, corrosion-resistant, wear-resistant, compact in equipment structure, small in occupied space and light in weight.
Further, the flue gas water-saving demisting module is connected and communicated with the condensed water tank through a drain pipe.
The beneficial effect of adopting the further scheme is that: the setting of condensate tank makes things convenient for in time to discharge the comdenstion water in the tobacco pipe.
Furthermore, a plurality of first spoilers are fixed on the lower side wall of the flue gas water-saving demisting module, and a plurality of second spoilers are fixed on the upper side wall of the cyclone separator.
The beneficial effect of adopting the further scheme is that: through setting up the spoiler, the flue gas passes through flue gas water conservation defogging module through first spoiler, perhaps enters into casing smoke vent department through the second spoiler, can reduce the resistance of flue gas and fall, makes along its more smooth and easy entering into flue gas water conservation defogging module and flue gas white elimination module.
Furthermore, a plurality of spiral-flow type baffle plates are fixed on the inner wall of the desulfurizing tower, and the spiral-flow type baffle plates are horizontally arranged between the cyclone separator and the flue gas water-saving demisting module.
The beneficial effect of adopting the further scheme is that: through setting up spiral-flow type baffling board, make the more even process cyclone of flue gas.
Furthermore, at least one layer of flue gas water-saving demisting module is arranged in the desulfurizing tower, and the plurality of layers of flue gas water-saving demisting modules are sequentially arranged below the cyclone separator from top to bottom.
The beneficial effect of adopting the further scheme is that: at least one layer of flue gas water-saving demisting module is arranged in the desulfurizing tower, so that the demisting effect is good.
Further, the desulfurizing tower is internally provided with 1-3 layers of flue gas water-saving demisting modules.
The beneficial effect of adopting the further scheme is that: through injecing the flue gas water conservation defogging module number of piles, can carry out effective defogging to the flue gas, save the cost moreover.
Further, the refrigerating system is an ammonia refrigerating system or a Freon refrigerating system.
The beneficial effect of adopting the further scheme is that: the ammonia cooling system or the Freon refrigerating system is adopted, so that a good refrigerating effect can be achieved by using few refrigerants, and the refrigerating system adopts the compressor to compress the refrigerants, so that the occupied space is small, the occupied area of equipment is saved, and the like.
Drawings
FIG. 1 is a schematic view of the mist and white elimination system of the present invention;
FIG. 2 is a schematic structural view of the mist and white elimination system of the present invention;
FIG. 3 is a schematic view of the installation structure of the de-fogging and de-whitening system of the present invention in the desulfurizing tower;
fig. 4 is a schematic cross-sectional structural view of the fully welded plate heat exchanger of the present invention;
fig. 5 is a schematic view of the structure of the fully welded plate heat exchanger of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a desulfurizing tower; 11. a smoke inlet pipeline; 2. a flue gas water-saving demisting module; 21. a refrigeration system; 22. a drain pipe; 23. a first spoiler; 3. a cyclone separator; 4. a cooler; 5. a second flow-surrounding plate; 6. a condensed water tank; 7. a rotational flow baffle; 8. a full-welded plate heat exchanger; 81. a frame; 82. a baffle; 83. a flow guide gap; 84. a flow disturbing groove.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-5, the system for removing fog and white smoke from flue gas after catalytic cracking and desulfurization of the present embodiment includes a flue gas water-saving demisting module 2, a refrigeration system 21 and a cyclone separator 3, wherein both the flue gas water-saving demisting module 2 and the cyclone separator 3 are installed at the upper end of the inner wall of a desulfurization tower 1, and the cyclone separator 3 is located above the flue gas water-saving demisting module 2; and two ends of the flue gas water-saving demisting module 2 are respectively communicated with the refrigerating system 21. According to the defogging and whitening system, the flue gas water-saving defogging module and the cyclone separator are arranged in an up-and-down overlapping manner, because the temperature of the flue gas subjected to desulfurization in the desulfurization tower is about 45-50 ℃, the flue gas moves from bottom to top after coming out of the desulfurization tower, the flue gas is condensed and cooled by cooling liquid by the flue gas water-saving defogging module to 5-10 ℃ so as to effectively reduce the moisture content of the flue gas, then flows through the cyclone separator, and the cyclone separator separates particles or liquid drops with large particle sizes, so that whitening treatment can be realized; that is to say, the system of the utility model cools the flue gas after moisture removal, achieves the purpose of reducing the saturation of the flue gas through the means of temperature reduction, and then makes the flue gas separate from the saturation through the cyclone separator, thereby eliminating the white rain and smoke discharged by the desulfurizing tower, and other pollutants in the flue gas can fall down along with the condensed water in the process of cooling the flue gas, thereby reducing the environmental pollution; additionally, the utility model discloses a defogging white system that disappears adopts refrigerating system to carry out the defogging, and area reduces greatly, has realized the miniaturization of a whole set of system, lightweight design, and after a whole set of system lightweight, can reach the reduction resistance in the overlapping arrangement of desulfurization top of the tower exit of discharging fume, reduce the newly-increased energy consumption.
The refrigeration system of the embodiment is a system which cools flue gas by using ammonia gas as a refrigerant by utilizing a compressor refrigeration principle. The compressor in the refrigerating system has small volume and small occupied space, and the occupied space of the equipment can be greatly reduced.
The refrigerating system of this embodiment is ammonia cooling system or freon refrigerating system. The ammonia cooling system or the Freon refrigerating system is adopted, so that a good refrigerating effect can be achieved by using few refrigerants, and the refrigerating system adopts the compressor to compress the refrigerants, so that the occupied space is small, the occupied area of equipment is saved, and the like.
The refrigeration principle of the ammonia cooling system is explained as follows: the low temperature, low pressure vapor of ammonia from the evaporator is drawn into the compressor, compressed into a high pressure, high temperature superheated vapor, and then into the condenser. The high-pressure high-temperature overheated ammonia gas has a temperature higher than that of the environment medium and a pressure which enables the ammonia gas to be condensed into a liquid state at normal temperature, so that the ammonia gas is cooled and condensed into ammonia liquid at high pressure and normal temperature when being discharged to a condenser. When the ammonia liquid at high pressure and normal temperature passes through the expansion valve, the pressure is reduced due to throttling, and simultaneously, the temperature of the ammonia liquid is correspondingly reduced due to heat absorption of boiling evaporation, so that the ammonia liquid at low pressure and low temperature is obtained. The low-pressure and low-temperature ammonia liquid is introduced into an evaporator to absorb heat and evaporate, so that the temperature of the ambient air and materials is reduced to achieve the aim of refrigeration. The low-pressure and low-temperature ammonia gas from the evaporator enters the compressor again, thereby completing a refrigeration cycle. The process is then repeated.
As shown in FIG. 1, the flue gas water-saving demisting module 2 is connected and communicated with the condensed water tank 6 through a drain pipe 22. The setting of condensate tank makes things convenient for in time to discharge the comdenstion water in the tobacco pipe.
As shown in fig. 2, a plurality of first spoilers 23 are fixed on the lower side wall of the flue gas water-saving demisting module 2 of the present embodiment, and a plurality of second spoilers 5 are fixed on the upper side wall of the cyclone separator 3. Through setting up the spoiler, the flue gas passes through the flue gas water conservation defogging module through first spoiler, perhaps enters into casing smoke vent department through the second spoiler, can reduce the resistance of flue gas and fall, makes along its more smooth and easy entering into flue gas water conservation defogging module and cyclone.
As shown in fig. 2, the plurality of first spoilers 23 and the plurality of second spoilers 5 in the present embodiment are arranged in parallel to the flow direction of the flue gas.
As shown in fig. 2, a plurality of swirling flow baffles 7 are fixed on the inner wall of the desulfurizing tower 1 in this embodiment, and the swirling flow baffles 7 are horizontally arranged between the cyclone separator 3 and the flue gas water-saving demisting module 2. Through setting up spiral-flow type baffling board, make the more even process cyclone of flue gas.
Specifically, the spiral-flow type baffle plate 7 comprises an inner ring, an outer ring and a plurality of baffle plates fixed between the inner ring and the outer ring, two ends of the baffle plate are respectively fixedly connected with the outer ring side of the inner ring and the inner ring side of the outer ring, and the baffle plates are obliquely arranged; two sides of the baffle plate can be arranged to be flat surfaces or cambered surfaces. The plurality of baffle plates are arranged in a circular ring shape, and a part of the baffle plates are arranged in a staggered way.
As shown in fig. 4-5, the flue gas water-saving demisting module 2 and the cyclone separator 3 of the present embodiment both adopt a cylindrical structure, an installation support frame is fixed on the inner wall of the desulfurization tower 1, and the flue gas water-saving demisting module 2 and the cyclone separator 3 are both fixed on the installation support frame. The first spoiler 23 is welded on the periphery of the lower end of the flue gas water-saving demisting module 2 and does not occupy the space in the middle of the flue gas water-saving demisting module 2, or is directly positioned at the lower side of the space in the middle of the flue gas water-saving demisting module 2; the second spoiler 5 is welded to the circumferential side of the lower end of the cyclone 3 and does not occupy the space in the middle of the cyclone 3, or is directly located at the lower side of the space in the middle of the cyclone 3. The rotational flow type baffle plate 7 is fixed on the inner wall of the flue gas water-saving demisting module 2 or the cyclone separator 3 or the desulfurizing tower 1.
As shown in fig. 1, a smoke inlet pipe 11 of the desulfurization tower 1 of the present embodiment is located below the smoke water-saving demisting module 2, and a cooler 4 is installed on the smoke inlet pipe 11. The setting of cooler can be cooled down in advance to the flue gas that gets into in the desulfurizing tower on the one hand, and on the other hand has also increased the route of flue gas, makes the defogging effect of flue gas better.
In this embodiment, at least one layer of flue gas water-saving demisting module 2 is installed inside the desulfurizing tower 1, and the plurality of layers of flue gas water-saving demisting modules 2 are sequentially arranged below the cyclone separator 3 from top to bottom. At least one layer of flue gas water-saving demisting module 2 is arranged in the desulfurizing tower 1, and the demisting effect is good.
One specific scheme of this embodiment is that 1-3 layers of flue gas water-saving demisting modules 2 are installed inside the desulfurizing tower 1. Through injecing the flue gas water conservation defogging module number of piles, can carry out effective defogging to the flue gas, save the cost moreover.
The defogging and whitening system of the embodiment cools the flue gas at about 20 ℃ after the flue gas enters the smoke inlet pipeline of the desulfurization tower, and finally enters the desulfurization tower, the flue gas coming out from the outlet of the clean flue of the desulfurization tower enters the flue gas water-saving defogging module, and after part of water in the flue gas is condensed, cyclone separation is carried out on the flue gas, so that large-particle liquid drops in the flue gas are separated, and the clean flue gas enters the chimney to be discharged. The amount of circulating cooling water required by the smoke whitening module is 780t/h, and the temperature of the cooling water is designed according to 15-23 ℃ in winter.
As shown in fig. 4 and 5, the flue gas water-saving demisting module 2 of the present embodiment adopts a full-welded plate heat exchanger 8, and heat transfer plates of the full-welded plate heat exchanger 8 are made of 2205 duplex stainless steel. The specific structure of the all-welded plate heat exchanger 8 of the present embodiment is as shown in fig. 4 and 5, and includes a frame 81 and a plurality of guide plates 82, the plurality of guide plates 82 are fixed on the inner side wall of the frame 81 in parallel, and a guide gap 83 penetrating up and down is formed between two adjacent guide plates 82; the guide plates 82 are all of hollow structures and are communicated with each other, and cooling liquid flows through the hollow structures in the guide plates 82; a plurality of turbulence grooves 84 are formed on the two side surfaces of the flow guide plate 82 in a concave manner, and if the turbulence grooves 84 on the two side surfaces of the flow guide plate are arranged in a one-to-one correspondence manner, and the bottoms of the turbulence grooves are in contact with each other; the flue gas in the desulfurizing tower 1 enters the diversion gap 83 between the diversion plates 82 through the first diversion plate 23 or the second diversion plate 5 and exchanges heat with the cooling liquid in the diversion plates 82. The flue gas water-saving demisting module and the flue gas white-removing module are all in a full-welding plate type structure, so that the heat transfer efficiency is high, dust is not easy to accumulate, the corrosion and wear are resistant, the equipment structure is compact, the occupied space is small, the weight is light, and the installation and implementation are convenient; the smoke stroke is short, the flowing field is uniform and anti-dust deposition is realized, the equipment reliability is high, and the overhaul and maintenance amount is small; the problems of easy corrosion, easy dust accumulation, large pressure drop, large installation space and the like of the traditional demister are solved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A demisting and whitening system for flue gas subjected to catalytic cracking desulfurization is characterized by comprising a flue gas water-saving demisting module, a refrigerating system and a cyclone separator, wherein the flue gas water-saving demisting module and the cyclone separator are both arranged at the upper end of the inner wall of a desulfurizing tower, and the cyclone separator is positioned above the flue gas water-saving demisting module; two ends of the flue gas water-saving demisting module are respectively communicated with the refrigerating system; the flue gas is condensed and cooled by cooling liquid through a flue gas water-saving demisting module, and then flows through a cyclone separator to separate particles or liquid drops with large particle sizes so as to realize the white elimination treatment;
a plurality of first spoilers are fixed on the lower side wall of the flue gas water-saving demisting module, and a plurality of second spoilers are fixed on the upper side wall of the cyclone separator; a plurality of spiral-flow type baffle plates are fixed on the inner wall of the desulfurizing tower, and the spiral-flow type baffle plates are horizontally arranged between the cyclone separator and the flue gas water-saving demisting module; 1-3 layers of flue gas water-saving demisting modules are arranged in the desulfurizing tower, and the flue gas water-saving demisting modules are sequentially arranged below the cyclone separator from top to bottom; the refrigerating system is an ammonia cooling system or a Freon refrigerating system.
2. The system of claim 1, wherein the flue gas inlet duct of the desulfurization tower is located below the flue gas water-saving demisting module, and a cooler is installed on the flue gas inlet duct.
3. The system for removing fog and white smoke after catalytic cracking and desulfurization as claimed in claim 1, wherein the water-saving and mist-removing module for smoke adopts a fully-welded plate heat exchanger.
4. The system of claim 3, wherein the heat transfer plates of the all-welded plate heat exchanger are made of 2205 duplex stainless steel.
5. The system for removing fog and white smoke after catalytic cracking and desulfurization as claimed in claim 1, wherein the smoke water-saving and demisting module is connected and communicated with the condensed water tank through a drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200962.XU CN210114901U (en) | 2019-02-14 | 2019-02-14 | Demisting and whitening system for flue gas after catalytic cracking desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200962.XU CN210114901U (en) | 2019-02-14 | 2019-02-14 | Demisting and whitening system for flue gas after catalytic cracking desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210114901U true CN210114901U (en) | 2020-02-28 |
Family
ID=69611532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920200962.XU Active CN210114901U (en) | 2019-02-14 | 2019-02-14 | Demisting and whitening system for flue gas after catalytic cracking desulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210114901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259846A (en) * | 2021-12-10 | 2022-04-01 | 南方电网电力科技股份有限公司 | Desulfurization flue gas water lift system |
-
2019
- 2019-02-14 CN CN201920200962.XU patent/CN210114901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114259846A (en) * | 2021-12-10 | 2022-04-01 | 南方电网电力科技股份有限公司 | Desulfurization flue gas water lift system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4235081A (en) | Compressed air dryer | |
| CN109351117B (en) | Wet flue gas defogging and water collecting integrated device | |
| CN204799047U (en) | High -efficient dust removal defogging integration equipment and dust removal defogging integration system | |
| CN1163389A (en) | Heat exchanger | |
| CN105214331A (en) | A kind of high-efficiency condensation tube bank demister and application | |
| CN205279817U (en) | Stave cooler , board -like dehydrating unit | |
| CN210114901U (en) | Demisting and whitening system for flue gas after catalytic cracking desulfurization | |
| CN110124347A (en) | A kind of energy and water saving type flue gas purification device and method | |
| CN110746024B (en) | Low-temperature economizer waste water concentration waste heat recycling device | |
| CN110186307A (en) | A kind of demisting, cooling integration heat exchanger tube and its device and application | |
| CN201676624U (en) | Gas and oil separator | |
| CN204460859U (en) | A kind of built-in oil eliminator formula condenser | |
| CN108373930A (en) | A kind of combined liquid separator | |
| CN111482057B (en) | A combined desulfurization and de-whitening device | |
| CN209576182U (en) | Wet flue gas demisting and water saving integrated apparatus | |
| CN107270736B (en) | Evaporation-cooling decoupling type heat exchange device | |
| CN202823120U (en) | Combined heat exchanger of cold dryer | |
| CN111482056A (en) | Single-tower double-circulation energy-saving whitening device | |
| CN212731624U (en) | Demisting water receiver and wet desulphurization tower | |
| CN212227437U (en) | Directly-heated heat pump | |
| CN209865742U (en) | Single-tower desulfurization and whitening device | |
| CN202803079U (en) | Plate-type cold drier | |
| CN111482058B (en) | A desulfurization and dewhitening device | |
| CN106362538A (en) | Wet flue gas dehumidification and emission reduction device | |
| CN210145740U (en) | Dust removal defogging white cigarette integration system that disappears |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |