CN208406534U - A kind of absorption tower of catalytic cracking flue gas disappears white system - Google Patents
A kind of absorption tower of catalytic cracking flue gas disappears white system Download PDFInfo
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- CN208406534U CN208406534U CN201820536902.0U CN201820536902U CN208406534U CN 208406534 U CN208406534 U CN 208406534U CN 201820536902 U CN201820536902 U CN 201820536902U CN 208406534 U CN208406534 U CN 208406534U
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- flue gas
- absorbent
- catalytic cracking
- absorption tower
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Abstract
A kind of absorption tower of catalytic cracking flue gas disappears white system, it is related to catalytic cracking flue gas desulfuration absorbing tower, including catalytic cracking flue gas absorption tower, the slurry heat exchanger being set between absorptive tower absorbent outlet and entrance, absorbent after slurry heat exchanger cooling with flue gas by being contacted, flue gas realizes dedusting, desulfurization, purified flue gas is after gas-liquid separation, clean flue gas passes through smoke stack emission, after being reduced due to absorbent temperature, moisture content reduces in purified flue gas, the white plume being effectively reduced during flue gas emission, plays the white effect that disappears；The utility model is easy to implement, small on the influence of former desulphurization system, and implementation cost is low.
Description
Technical field
The utility model relates to catalytic cracking flue gas desulfurization application field more particularly to a kind of catalytic cracking flue gas desulfurizing towers
Disappear white system.
Background technique
The industries such as existing electric power, steel, biochemistry flue gas is generally all handled by desulfurization, out of stock etc., and more in sweetening process
Desulfurization process is carried out using Gypsum Wet technology, the steam in flue gas after desulfurization is substantially at saturated mode, water capacity
Greatly, in discharge process, flue gas is mixing temperature reduction in diffusion process with atmosphere, and the elutriation in flue gas goes out, in chimney periphery shape
At white haze, it is commonly called as " plume ", currently, the area such as Shanghai, Tianjin, Tangshan has successively put into effect flue gas and disappeared white requirement, it is desirable that white
Plume is administered.
In petrochemical industry, similarly there is a problem of identical, wherein catalytic cracking in the flue gas that discharges in process of production
(FCC) regenerated flue gas is the primary pollution source of oil plant Sox discharge, and contains a large amount of NOx and particulate matter, therefore similarly deposit
In ultra-clean emissions requirements, due to industry difference, petrochemical industry mainly uses wet desulphurization, was producing in terms of flue gas desulfurization
Cheng Zhong, there is also white plume problems, are limited by industry characteristic, the arrangements such as desulfurizing tower, the chimney of petrochemical industry and power plant
Inconsistent, mostly nicotinic acids mode, therefore, the existing white technical solution that disappears not can be used directly in petrochemical industry.
To guarantee desulfuration efficiency, while solving the problems, such as the white plume of flue gas emission process, it is desirable to provide one kind is novel to disappear
White system disappears under the premise of guaranteeing that flue gas emission is up to standard suitable for the occasion of the nicotinic acids such as catalytic cracking flue gas desulfurizing tower
Except white plume.
Utility model content
The utility model reduces the temperature of absorbing liquid, reduces flue-gas temperature, and then improve desulfuration efficiency, and reduce
Humidity of flue gas reduces flue gas and heats up thermic load, implements convenient for scheme and can effectively eliminate white plume.
To sum up, the utility model has following innovative:
1) absorbent temperature is reduced, improves desulfurization, efficiency of dust collection, while reducing the water capacity in flue gas.
2) flue gas heating thermic load is reduced, flue gas temperature rise heat exchanger area, weight are reduced；
3) flue gas temperature rise heat exchanger can be directly mounted between absorption tower and chimney, adapts to nicotinic acids desulfurizing tower and disappears white change
It makes, reduces investment.
4) slurry heat exchanger uses straight channel heat exchanger structure, on the basis of solving blockage problem, light-weight, volume
It is small, installation requirement is reduced, the exploitativeness of scheme greatly improved.
5) hot gas is added before flue gas heater smoke inlet, the wet neat stress after absorption is preheated, reduce cigarette
Hot-air heater blocks risk.
6) flue gas heater uses straight channel heat exchanger structure, on the basis of solving blockage problem, light-weight, volume
It is small, installation requirement is reduced, the exploitativeness of scheme greatly improved.
The utility model is to be achieved by the following technical programs:
A kind of absorption tower of catalytic cracking flue gas disappears white system, including flue gas scrubber, outside flue gas scrubber
Venturi tube and absorbent pipeline, wherein
The flue gas scrubber includes flue gas scrubber tower body and the chimney above flue gas scrubber tower body；
Described Venturi tube one end is equipped with smoke inlet and absorbent entrance, the other end are connected to flue gas scrubber tower body；
Flue gas scrubber tower body bottom has absorbent pond, and absorbent pipeline one end is connected to absorbent pond,
The other end is connected to the absorbent entrance of Venturi tube, and the absorbent pipeline is equipped with absorbent heat exchanger, and the absorbent changes
For the hot media channel of hot device by absorbent, the cold medium channel of absorbent heat exchanger passes through cold medium.
Flue gas heater, the cold medium channel of the flue gas heater are equipped between the flue gas scrubber tower body and chimney
By flue gas, the hot media channel of flue gas heater passes through thermal medium.
The smoke inlet front end of the flue gas heater is passed through thermal medium, and thermal medium enters flue gas after mixing with flue gas
The cold medium channel of device promotes flue-gas temperature.
The thermal medium is hot gas.
The absorbent heat exchanger is heat-exchangers of the plate type, and the heat transfer element of the heat-exchangers of the plate type is by corrugated cardboard sheet group
At multiple corrugated cardboard sheets are folded to be fallen to form hot media channel and cold medium channel, in hot media channel, between plate facing each other
Ripple minimum clearance > 0mm.
Flue gas condenser is equipped between the flue gas heater and flue gas scrubber tower body, the heat of the flue gas condenser is situated between
By flue gas, the cold medium channel of the flue gas condenser passes through cold medium in matter channel.
The smoke inlet front end is equipped with flue gas heat collector, the cold medium channel of flue gas heat collector and the heat of flue gas heater
Medium channel connection.
The beneficial effects of the utility model are:
By the way that slurries cooler is arranged, by reducing absorbent temperature, flue gas is reduced while improving desulfuration efficiency
Temperature, and then reduce the water capacity of flue gas, in the discharge for alleviating white plume and pollutant to a certain degree, for flue gas plus
For hot device, flue gas heating thermic load is greatly reduced, and flue gas heater can be arranged directly between absorption tower and chimney, is improved
The degree of superheat of vapor in flue gas, eliminate white plume can be directly mounted in addition, flue gas heater is compact-sized, light-weight
Between absorption tower and chimney, existing nicotinic acids structure is not influenced, is implemented simply, improvement cost is low.
Detailed description of the invention
Fig. 1 is the system schematic of the utility model.
Fig. 2-Fig. 6 is other implementation connection schematic diagrams of the utility model.
Fig. 7 is the slurry heat exchanger flow of media schematic cross-section for constituting the utility model.
In figure: 1. smoke absorption towers, 101. absorption towers, 102. chimneys, 103. absorbent entrances, 104. smoke inlets,
105. absorbent outlet, 2. slurry heat exchangers, 3. flue gas heaters, 4. flue gas condensers, 5. flue gas heat collectors, 6. venturi
Pipe.
A. former flue gas, B. neat stress, C. absorbent, the cold medium in the cold medium channel of D. slurry heat exchanger,
E. the thermal medium in the hot media channel of flue gas heater, the cold medium of the cold medium of F. flue gas condenser, G. heat
Medium, H1. absorbent channel side runner height, H2. absorbent channel side ripple height of projection, H3. absorbent channel are another
Side wave line height of projection, h1. exhaust gases passes side runner height, h2. exhaust gases passes side ripple height of projection, h3. flue gas flow channel
Other side ripple height of projection.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing
The utility model is described in further detail with most preferred embodiment.
As shown in Figure 1, the utility model includes flue gas scrubber 1, Venturi tube and suction outside flue gas scrubber
Receive agent pipeline, wherein
The flue gas scrubber includes flue gas scrubber tower body 101 and the chimney 102 above flue gas scrubber tower body；
Described Venturi tube one end is equipped with smoke inlet 104 and absorbent entrance 103, the other end and flue gas scrubber tower body
Connection；
Flue gas scrubber tower body bottom has absorbent pond, and absorbent bottom of pond portion is equipped with absorbent outlet 105, described
Absorbent pipeline one end is connected to absorbent mouth out, and the other end is connected to the absorbent entrance of Venturi tube, the absorber tube
Road is equipped with absorbent heat exchanger 2, and for the hot media channel of the absorbent heat exchanger by absorbent, cold medium channel passes through cold Jie
Matter.
The cold medium D for being passed through the cold medium channel of slurry heat exchanger cools down the absorbent for being passed through hot media channel,
Absorbent after cooling enters absorption tower via absorbent entrance.
Venturi tube 6 is provided with outside flue gas scrubber tower body, one end and absorbent entrance, the flue gas of Venturi tube enter
Mouth communicates, and other end is communicated with flue gas scrubber tower body, i.e., sets at the absorbent of flue gas scrubber tower body and smoke inlet
It is equipped with Venturi tube, prior absorbent C and former flue gas A's is sufficiently mixed and cools down, in the process, SOx and suction in flue gas
Receive agent haptoreaction, effectively remove the particulate matter in SOx and flue gas, after flue gas enters in flue gas scrubber tower body, using into
The washing and gas-liquid separation of one step, purified neat stress B are finally discharged via chimney.Due in the present invention, inhaling
It receives and is provided with slurry heat exchanger on agent pipeline, acted on by cold medium, effectively reduce absorbent temperature, and then the efficiency of desulfurization
And the efficiency of dedusting is effectively promoted, and the flue-gas temperature after desulphurization reaction is lower, thus its water capacity is lower, after reducing
Water capacity in continuous net cigarette correspondingly alleviates the discharge of white plume while promoting desulfuration efficiency, achieves beneficial
Effect.
As shown in Fig. 2, on the basis of slurries cool-down dehumidification, cigarette is arranged between flue gas scrubber and chimney in conjunction with Fig. 1
Hot-air heater, by flue gas, the hot media channel of flue gas heater passes through thermal medium in the cold medium channel of flue gas heater.It utilizes
Thermal medium E in the hot media channel of flue gas heater heats net cigarette, due to there is the basis of slurries cool-down dehumidification, it is only necessary to
Promoting less temperature to neat stress can be realized the effect of the white plume of elimination, i.e. the thermic load of flue gas heater substantially drops
Low, correspondingly, the heat exchange area of flue gas heater, volume, weight can substantially reduce, can directly flue gas scrubber with
It is installed between chimney.
As shown in figure 3, the smoke inlet front end of flue gas heater is passed through thermal medium, and hot gas is mixed with flue gas in conjunction with Fig. 1
Enter the cold medium channel of flue gas heater afterwards, thermal medium is led by protruding into the intracorporal thermal medium distributor of flue gas scrubber tower
Enter.
Preferably, the thermal medium is hot gas.Hot gas mixes after being passed through with wet flue gas, and flue-gas temperature is promoted, and eliminates
Liquid water droplets reduce the blocking and dust stratification risk of flue gas heater.
As shown in figure 3, hot gas is added before flue gas heater smoke inlet in conjunction with Fig. 2, to the wet neat stress after absorption
It being preheated, reduces flue gas heater and block risk, it is preferable that hot gas can be passed directly into above scrubbing tower tower body, or
It is mixed after being distributed by gas distributor with flue gas, after mixing, the temperature and the vapor degree of superheat of flue gas are improved, and eliminate liquid
Water droplet reduces flue gas heat-exchange unit blocking and dust stratification risk.
As shown in figure 4, flue gas condenser 4 is arranged between flue gas heater and flue gas scrubber, flue gas is cold in conjunction with Fig. 2
For the hot media channel of condenser by flue gas, the cold medium channel of flue gas condenser passes through cold medium.
The vapor in flue gas is condensed again using the cold medium F of the cold medium of flue gas condenser, is further reduced net
The water capacity of cigarette.
As shown in figure 5, smoke inlet front end is equipped with flue gas heat collector 5, the hot media channel of flue gas heat collector in conjunction with Fig. 2
By flue gas, the cold medium channel of flue gas heat collector is connected to the hot media channel of flue gas heater.Made using the heat of flue gas
For heat source, the smoke temperature into flue gas scrubber had not only been reduced by heating agent, but also solved the required heat source of flue gas heating, it is real
Fume afterheat comprehensive utilization is showed.
As shown in fig. 6, flue gas is directly entered flue gas scrubber tower body in conjunction with Fig. 2, absorbent passes through on setting and tower body
Absorbent entrance enters, and is set in the absorbent distributed component in tower, and absorbent distributed component can be Venturi tube, mist
Change the structures such as spray head, absorbent carries out haptoreaction in Ta Nei and flue gas and realizes desulfurization, dedusting.
As shown in fig. 7, slurry heat exchanger falls and formed absorbent runner and cold media flow channel by multiple corrugated cardboard sheets are folded, inhale
The ripple height of projection H2 and H3 and absorbent runner height gap H1 for receiving agent runner two sides, as H1 > H2+H3, absorbent
Minimum flow path gap is greater than 0, i.e., ripple does not contact between each other in absorbent runner, forms put-through channel, and then solve stifled
Plug problem, meanwhile, compared with pipe heat exchanger, since heat transfer element is corrugated cardboard sheet, heat transfer efficiency is high, and cold-end temperature difference is small, together
Under the conditions of equal cold sources, absorbent outlet temperature is lower, and desulfurization, dedusting, effect on moisture extraction are more preferable.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (7)
- The white system 1. a kind of absorption tower of catalytic cracking flue gas disappears, which is characterized in that including flue gas scrubber, be set to flue gas washing Venturi tube and absorbent pipeline outside tower, whereinThe flue gas scrubber includes flue gas scrubber tower body and the chimney above flue gas scrubber tower body；Described Venturi tube one end is equipped with smoke inlet and absorbent entrance, the other end are connected to flue gas scrubber tower body；Flue gas scrubber tower body bottom has absorbent pond, and absorbent pipeline one end is connected to absorbent pond, another End is connected to the absorbent entrance of Venturi tube, and the absorbent pipeline is equipped with absorbent heat exchanger, the absorbent heat exchanger Hot media channel by absorbent, the cold medium channel of absorbent heat exchanger passes through cold medium.
- 2. a kind of absorption tower of catalytic cracking flue gas disappears white system according to claim 1, which is characterized in that the flue gas is washed It washs and is equipped with flue gas heater between tower tower body and chimney, the cold medium channel of the flue gas heater passes through flue gas, flue gas The hot media channel of device passes through thermal medium.
- 3. a kind of absorption tower of catalytic cracking flue gas disappears white system according to claim 2, which is characterized in that the flue gas adds The smoke inlet front end of hot device is passed through thermal medium, and thermal medium enters the cold medium channel of flue gas heater, mentions after mixing with flue gas Rise flue-gas temperature.
- 4. a kind of absorption tower of catalytic cracking flue gas disappears white system according to claim 3, which is characterized in that the thermal medium For hot gas.
- 5. a kind of absorption tower of catalytic cracking flue gas disappears white system according to claim 1, which is characterized in that the absorbent Heat exchanger is heat-exchangers of the plate type, and the heat transfer element of the heat-exchangers of the plate type is made of corrugated cardboard sheet, multiple corrugated cardboard sheets are folded It falls to form hot media channel and cold medium channel, the ripple minimum clearance > in hot media channel, between plate facing each other 0mm。
- 6. a kind of absorption tower of catalytic cracking flue gas disappears white system according to claim 2, which is characterized in that the flue gas adds Flue gas condenser is equipped between hot device and flue gas scrubber tower body, the hot media channel of the flue gas condenser passes through flue gas, institute The cold medium channel for stating flue gas condenser passes through cold medium.
- The white system 7. a kind of absorption tower of catalytic cracking flue gas according to any one of claim 2,3,6 disappears, feature exist In flue gas scrubber smoke inlet front end is equipped with flue gas heat collector, the cold medium channel of flue gas heat collector and flue gas The hot media channel of device is connected to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820536902.0U CN208406534U (en) | 2018-04-16 | 2018-04-16 | A kind of absorption tower of catalytic cracking flue gas disappears white system |
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| CN201820536902.0U CN208406534U (en) | 2018-04-16 | 2018-04-16 | A kind of absorption tower of catalytic cracking flue gas disappears white system |
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| CN208406534U true CN208406534U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465347A (en) * | 2018-04-16 | 2018-08-31 | 天津华赛尔传热设备有限公司 | A kind of absorption tower of catalytic cracking flue gas disappears white system |
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2018
- 2018-04-16 CN CN201820536902.0U patent/CN208406534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465347A (en) * | 2018-04-16 | 2018-08-31 | 天津华赛尔传热设备有限公司 | A kind of absorption tower of catalytic cracking flue gas disappears white system |
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